CN106148169B - It is a kind of to produce high concentration biogas production equipment - Google Patents

Abstract

The invention discloses a production equipment capable of producing high-concentration biogas, comprising a stirring tank, a grinding tank, a storage tank, a first fermentation tank and a second fermentation tank, a stirring tank and a grinding tank, a grinding tank and a storage tank, a storage tank and a second fermentation tank A fermenter, the first fermenter and the second fermenter are all connected by pipelines, and a delivery pump is installed on the pipelines, and the two ends of the fluid pipelines are connected to the second fermenter, and a fluid pipeline is installed on the second fermenter. A fluid pump, both ends of the biogas circulation pipeline are connected to the second fermentation tank, an air pump is connected to the biogas circulation pipeline, and a super filter is also connected to the biogas circulation pipeline. The biogas produced by fermentation in the invention has a high concentration and contains less impurities, and can be directly applied in production and life. At the same time, it speeds up the entire fermentation process, shortens the cycle of biogas generation, and can quickly generate biogas.

Description

A kind of production equipment capable of producing high-concentration biogas

technical field

The invention relates to the field of biogas production, in particular to a production device capable of producing high-concentration biogas.

Background technique

In related technologies, with the depletion of non-renewable energy sources all over the world, the energy crisis has been paid more and more attention by people. As a clean and pollution-free renewable emerging energy, biogas has been widely used, especially in the field of biogas for civil use. Economic and social benefits have been further reflected.

Many of the current biogas fermentation equipment generally adopt sealed natural fermentation, so the biogas produced by such fermentation is impure and contains a lot of impurities, and the fermentation efficiency is low, and special purification treatment is required, which is mainly because of the biogas fermentation process. Medium organic matter is confined in the cell wall and cannot be fully resolved. The cell wall is a biodegradable inert substance, and it is difficult to crack. The hydraulic cavitation method utilizes extreme conditions such as high temperature (local temperature up to 200-300°C), high pressure, strong shock wave (shock frequency up to 2000-3000Hz), high-speed micro-jet and other extreme conditions generated by the hydraulic cavitation process to achieve biological cell cracking. , but when it is cracked, the solid phase impurities contained in it flow through the nozzle or plate hole and are prone to blockage, resulting in changes in the operating conditions of the equipment.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a kind of production equipment capable of producing high-concentration biogas, which solves the problem that when the hydraulic cavitation is cracked, the solid phase impurities contained in it flow through the nozzle or the plate hole is prone to blockage, resulting in the occurrence of equipment operating conditions. Changing technical issues.

In order to solve the above technical problems, the technical solution adopted by the present invention is a production equipment capable of producing high-concentration biogas, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part. The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Enter the hollow rotating shaft, the hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part, the end close to the liquid discharge part is spherical, and the end inside the fixed cavity is spherical with the end of the hollow rotating shaft The shape matches the spherical shape, and the two fit each other so that the hollow rotating shaft is rotatably connected to the fixed cavity. One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and the interior of the cavitation induction head is provided with a plurality of holes for gas flow, and the cavitation induction head is provided with a There are blades, and the cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge. 15° angle. The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe, and the liquid inlet A liquid inlet piston is arranged inside the cylinder, and the liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head to move back and forth along the central axis of the cavitation part. The liquid discharge part is also divided into a liquid discharge cone and a liquid discharge cylinder. The liquid discharge cone is directly connected to the cavitation part, and the liquid discharge cone is connected with a liquid discharge pipe. A liquid discharge piston is arranged inside the liquid cylinder, and the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod. The liquid discharge connection rod is connected to a motor to drive the liquid discharge piston head to move back and forth along the central axis of the cavitation part. The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

Preferably, the hollow rotating shaft is further provided with a baffle for closing the fixed cavity.

Preferably, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder.

Preferably, at least two of the rotating orifice plates are stacked on top of each other, one of the rotating orifice plates is fixed, and the other rotating orifice plate is driven to rotate by the cavitation inducing head.

Preferably, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic inlet plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is in direct contact with the inner surface of the liquid inlet cylinder. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves. The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part.

Beneficial effects of the present invention:

The invention utilizes the principle of hydraulic cavitation, that is, utilizes the extreme conditions such as high temperature, high pressure, strong shock wave, and high-speed micro-jet flow generated by the hydraulic cavitation process to realize the cracking of biological cells, and the organic substances in biological cells flow out and enter the liquid phase, thereby The hard-to-degrade solid substances are easily degradable soluble substances, which are beneficial to the aerobic digestion reaction. When the cell wall is cracked, the solid-phase impurities contained in the flow through the nozzle or the plate hole are not easy to be blocked, and the resulting hydraulic cavitation The effect is further strengthened, thereby further promoting the aerobic digestion reaction.

The total solid removal rate of the cell wall after the treatment of the invention reaches 52.9%, while the total solid removal rate of the cell wall without the treatment of the invention is 35.6%.

It is measured that the power consumed by the cavitator of the present invention is 530W/kg, which is less than the power consumed by other treatment processes such as ultrasonic treatment and thermal treatment.

Description of drawings

Utilize accompanying drawing to further illustrate the invention, but the embodiment in the accompanying drawing does not constitute any limitation to the present invention, for those of ordinary skill in the art, under the premise of not paying creative work, can also obtain other according to following accompanying drawing Attached picture.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural schematic diagram of the liquid inlet piston of the present invention.

Fig. 3 is a structural schematic diagram of the present invention.

Reference signs: 1. Liquid inlet part, 2. Cavitation induction head, 3. Blade, 4. Rotating orifice plate, 5. Hollow rotating shaft, 6. Liquid discharge part, 7. Cavitation cavity, 8. Fixed cavity , 9, steel core, 10, leather bowl, 11, pressure plate, 12, circlip, 13, stirring tank, 14, grinding tank, 15, storage tank, 16, first fermentation tank, 17, second fermentation tank, 18 , pipeline, 19, biogas circulation pipeline, 20, super filter, 21, air pump, 22, fluid pipeline, 23, delivery pump, 24, filter, 25, return pipeline, 26, hot water circulation pipeline, 27, waste collection Reservoir, 28. Fluid pump, 29. PH value testing device, 30. Safety control valve, 31. Pressure testing device.

Detailed ways

The present invention is further described in conjunction with the following examples.

Embodiment one

The device of the present invention, as shown in FIG. 1 , includes a cavitator, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part.

The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Access to the hollow turning shaft. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. One end close to the liquid discharge part is in the shape of a sphere, and the end inside the fixed cavity is a spherical shape that matches the spherical shape of one end of the hollow rotating shaft. Spherical, the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity. The hollow rotating shaft is also provided with a baffle to close the fixed cavity to prevent fluid from entering the fixed cavity and damaging the connection structure between the hollow rotating shaft and the fixed cavity. The fixed cavity is fixed in the cavitation cavity by a bracket.

One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and a plurality of holes for gas flow are provided inside the cavitation induction head. In this embodiment, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder. Vanes are provided on the outer surface of the cavitation induction head near the liquid inlet part. The cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. Under the impetus of the fluid to the blades, the cavitation induction head drives the rotation of the orifice plate, and the shear and axial driving force on the rotation orifice plate can be Break and separate the blockage, effectively prevent the small hole from being blocked and reduce the energy consumed in the cavitation process. At the same time, the gas in the middle-east rotating shaft rotates into the liquid inlet cylinder through its port and the surface of the cavitation induction head, generating a large amount of bubbles. There are at least two rotating orifice plates superimposed on each other, one of which is fixed and the other rotating orifice is driven by the cavitation inducing head to rotate.

The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the holes forms an angle of 15° with the axis of the hollow rotating shaft, allowing the fluid mixed into the cavitation to enter the cavitation part.

The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe. The liquid inlet cylinder is provided with a liquid inlet piston. The liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head along the central axis of the cavitation part. back and forth movement.

The liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part, the liquid discharge cone part is directly connected to the cavitation part, and the liquid discharge cone part is connected with a liquid discharge pipe. The liquid discharge cylinder is provided with a liquid discharge piston, the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod, and the liquid discharge connecting rod is connected to a motor to drive the liquid discharge piston head along the central axis of the cavitation part back and forth movement.

During specific implementation, the liquid discharge piston is stationary, and the liquid inlet piston moves away from the cavitation part. At this time, the liquid inlet cone is in a negative pressure state, and the fluid enters through the liquid inlet pipe, and the fluid drives the blades, the hollow rotating shaft, and the rotating orifice plate to rotate. Under the adjustment of the regulating valve, the compressed air in the air storage tank enters the liquid inlet part through the hollow rotating shaft, and generates bubbles with a diameter of 2-5 microns to induce cavitation. The liquid inlet piston moves towards the cavitation part, and the fluid flow rate gradually decreases. The fluid quickly enters the rotating orifice plate and flows into the cavitation cavity, and its flow rate gradually increases. Then, the rotating orifice plate rotates to close the communication between the cavitation cavity and the liquid inlet cone, the liquid discharge piston moves to the cavitation part, the pressure in the cavitation cavity increases, the cavitation rapidly collapses, and local high temperature and high pressure are generated. And high-speed micro-jet, breaking the cell wall of biological cells. The liquid discharge piston moves away from the cavitation part, and the fluid in the cavitation cavity flows out through the liquid discharge pipe.

The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

The device can be connected with a pipe of corresponding diameter through a flange, and when the fluid passes through the device at a speed exceeding 3-10m/s, the liquid will be cavitated inside the device.

During operation, the liquid inlet piston and the liquid discharge piston are in direct contact with certain corrosive liquids, and are subjected to high pressure, which not only increases the friction between the liquid inlet piston and the liquid inlet cylinder, the liquid discharge piston and the liquid discharge cylinder Force, and solids are easily squeezed between the piston and the cylinder, increasing the wear of the piston.

As shown in Figure 2, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic pressure plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is directly connected to the inner surface of the liquid inlet cylinder. touch. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves

In this embodiment, the triangle is a right triangle, the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid. The groove can further improve the wear-resistant sealing performance of the liquid inlet piston. The width of the groove is between 4.5mm and the distance between the grooves is 5.0mm. The side length of the diamond-shaped depression is 3.0mm, the depth of the diamond-shaped depression is 4.0mm, and the included angle at the center of the diamond-shaped depression is 10°.

After testing, the average life of the liquid inlet piston is 121.7 hours, which is 119.2% higher than that of the standard piston.

The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part. When the liquid discharge piston moves, it will pass through the liquid discharge pipe. When the diameter of the liquid discharge pipe is large, the liquid discharge piston will easily deviate slightly when passing through the liquid discharge pipe, causing fluid to seep into the space between the liquid discharge piston and the liquid discharge cylinder. Connect the outer hook with the inner hook so that the discharge piston fits closely to the discharge cylinder. When passing through the discharge pipe, because the relative position of the discharge piston and the discharge cylinder is fixed, the discharge piston There is no offset, thereby ensuring that the discharge fluid does not infiltrate between the discharge piston and the discharge cylinder.

The total solid removal rate of the cell wall after the treatment of the invention reaches 52.9%, while the total solid removal rate of the cell wall without the treatment of the invention is 35.6%.

It is measured that the power consumed by the cavitator of the present invention is 530W/kg.

Embodiment two

The device of the present invention, as shown in FIG. 1 , includes a cavitator, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part.

The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Access to the hollow turning shaft. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. One end close to the liquid discharge part is in the shape of a sphere, and the end inside the fixed cavity is a spherical shape that matches the spherical shape of one end of the hollow rotating shaft. Spherical, the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity. The hollow rotating shaft is also provided with a baffle to close the fixed cavity to prevent fluid from entering the fixed cavity and damaging the connection structure between the hollow rotating shaft and the fixed cavity. The fixed cavity is fixed in the cavitation cavity by a bracket.

One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and a plurality of holes for gas flow are provided inside the cavitation induction head. In this embodiment, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder. Vanes are provided on the outer surface of the cavitation induction head near the liquid inlet part. The cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. Under the impetus of the fluid to the blades, the cavitation induction head drives the rotation of the orifice plate, and the shear and axial driving force on the rotation orifice plate can be Break and separate the blockage, effectively prevent the small hole from being blocked and reduce the energy consumed in the cavitation process. At the same time, the gas in the middle-east rotating shaft rotates into the liquid inlet cylinder through its port and the surface of the cavitation induction head, generating a large amount of bubbles. There are at least two rotating orifice plates superimposed on each other, one of which is fixed and the other rotating orifice is driven by the cavitation inducing head to rotate.

The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the holes forms an angle of 15° with the axis of the hollow rotating shaft, allowing the fluid mixed into the cavitation to enter the cavitation part.

The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe. The liquid inlet cylinder is provided with a liquid inlet piston. The liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head along the central axis of the cavitation part. back and forth movement.

The liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part, the liquid discharge cone part is directly connected to the cavitation part, and the liquid discharge cone part is connected with a liquid discharge pipe. The liquid discharge cylinder is provided with a liquid discharge piston, the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod, and the liquid discharge connecting rod is connected to a motor to drive the liquid discharge piston head along the central axis of the cavitation part back and forth movement.

During specific implementation, the liquid discharge piston is stationary, and the liquid inlet piston moves away from the cavitation part. At this time, the liquid inlet cone is in a negative pressure state, and the fluid enters through the liquid inlet pipe, and the fluid drives the blades, the hollow rotating shaft, and the rotating orifice plate to rotate. Under the adjustment of the regulating valve, the compressed air in the air storage tank enters the liquid inlet part through the hollow rotating shaft, and generates bubbles with a diameter of 2-5 microns to induce cavitation. The liquid inlet piston moves towards the cavitation part, and the fluid flow rate gradually decreases. The fluid quickly enters the rotating orifice plate and flows into the cavitation cavity, and its flow rate gradually increases. Then, the rotating orifice plate rotates to close the communication between the cavitation cavity and the liquid inlet cone, the liquid discharge piston moves to the cavitation part, the pressure in the cavitation cavity increases, the cavitation rapidly collapses, and local high temperature and high pressure are generated. And high-speed micro-jet, breaking the cell wall of biological cells. The liquid discharge piston moves away from the cavitation part, and the fluid in the cavitation cavity flows out through the liquid discharge pipe.

The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

The device can be connected with a pipe of corresponding diameter through a flange, and when the fluid passes through the device at a speed exceeding 3-10m/s, the liquid will be cavitated inside the device.

During operation, the liquid inlet piston and the liquid discharge piston are in direct contact with certain corrosive liquids, and are subjected to high pressure, which not only increases the friction between the liquid inlet piston and the liquid inlet cylinder, the liquid discharge piston and the liquid discharge cylinder Force, and solids are easily squeezed between the piston and the cylinder, increasing the wear of the piston.

As shown in Figure 2, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic pressure plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is directly connected to the inner surface of the liquid inlet cylinder. touch. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves

In this embodiment, the triangle is a right triangle, the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid. The groove can further improve the wear-resistant sealing performance of the liquid inlet piston. The width of the groove is between 4.5mm and the distance between the grooves is 5.0mm. The side length of the diamond-shaped depression is 4.5mm, the depth of the diamond-shaped depression is 4.0mm, and the included angle at the center of the diamond-shaped depression is 15°.

After testing, the average life of the liquid inlet piston is 98.6 hours, which is 81.6% higher than that of the standard piston.

The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part. When the liquid discharge piston moves, it will pass through the liquid discharge pipe. When the diameter of the liquid discharge pipe is large, the liquid discharge piston will easily deviate slightly when passing through the liquid discharge pipe, causing fluid to seep into the space between the liquid discharge piston and the liquid discharge cylinder. Connect the outer hook with the inner hook so that the discharge piston fits closely to the discharge cylinder. When passing through the discharge pipe, because the relative position of the discharge piston and the discharge cylinder is fixed, the discharge piston There is no offset, thereby ensuring that the discharge fluid does not infiltrate between the discharge piston and the discharge cylinder.

The total solid removal rate of the cell wall after the treatment of the invention reaches 50.3%, while the total solid removal rate of the cell wall without the treatment of the invention is 39.6%.

It is measured that the power consumed by the cavitator of the present invention is 529W/kg.

Embodiment three

The device of the present invention, as shown in FIG. 1 , includes a cavitator, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part.

The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Access to the hollow turning shaft. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. One end close to the liquid discharge part is in the shape of a sphere, and the end inside the fixed cavity is a spherical shape that matches the spherical shape of one end of the hollow rotating shaft. Spherical, the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity. The hollow rotating shaft is also provided with a baffle to close the fixed cavity to prevent fluid from entering the fixed cavity and damaging the connection structure between the hollow rotating shaft and the fixed cavity. The fixed cavity is fixed in the cavitation cavity by a bracket.

One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and a plurality of holes for gas flow are provided inside the cavitation induction head. In this embodiment, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder. Vanes are provided on the outer surface of the cavitation induction head near the liquid inlet part. The cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. Under the impetus of the fluid to the blades, the cavitation induction head drives the rotation of the orifice plate, and the shear and axial driving force on the rotation orifice plate can be Break and separate the blockage, effectively prevent the small hole from being blocked and reduce the energy consumed in the cavitation process. At the same time, the gas in the middle-east rotating shaft rotates into the liquid inlet cylinder through its port and the surface of the cavitation induction head, generating a large amount of bubbles. There are at least two rotating orifice plates superimposed on each other, one of which is fixed and the other rotating orifice is driven by the cavitation inducing head to rotate.

The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the holes forms an angle of 15° with the axis of the hollow rotating shaft, allowing the fluid mixed into the cavitation to enter the cavitation part.

The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe. The liquid inlet cylinder is provided with a liquid inlet piston. The liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head along the central axis of the cavitation part. back and forth movement.

The liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part, the liquid discharge cone part is directly connected to the cavitation part, and the liquid discharge cone part is connected with a liquid discharge pipe. The liquid discharge cylinder is provided with a liquid discharge piston, the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod, and the liquid discharge connecting rod is connected to a motor to drive the liquid discharge piston head along the central axis of the cavitation part back and forth movement.

During specific implementation, the liquid discharge piston is stationary, and the liquid inlet piston moves away from the cavitation part. At this time, the liquid inlet cone is in a negative pressure state, and the fluid enters through the liquid inlet pipe, and the fluid drives the blades, the hollow rotating shaft, and the rotating orifice plate to rotate. Under the adjustment of the regulating valve, the compressed air in the air storage tank enters the liquid inlet part through the hollow rotating shaft, and generates bubbles with a diameter of 2-5 microns to induce cavitation. The liquid inlet piston moves towards the cavitation part, and the fluid flow rate gradually decreases. The fluid quickly enters the rotating orifice plate and flows into the cavitation cavity, and its flow rate gradually increases. Then, the rotating orifice plate rotates to close the communication between the cavitation cavity and the liquid inlet cone, the liquid discharge piston moves to the cavitation part, the pressure in the cavitation cavity increases, the cavitation rapidly collapses, and local high temperature and high pressure are generated. And high-speed micro-jet, breaking the cell wall of biological cells. The liquid discharge piston moves away from the cavitation part, and the fluid in the cavitation cavity flows out through the liquid discharge pipe.

The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

The device can be connected with a pipe of corresponding diameter through a flange, and when the fluid passes through the device at a speed exceeding 3-10m/s, the liquid will be cavitated inside the device.

During operation, the liquid inlet piston and the liquid discharge piston are in direct contact with certain corrosive liquids, and are subjected to high pressure, which not only increases the friction between the liquid inlet piston and the liquid inlet cylinder, the liquid discharge piston and the liquid discharge cylinder Force, and solids are easily squeezed between the piston and the cylinder, increasing the wear of the piston.

As shown in Figure 2, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic pressure plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is directly connected to the inner surface of the liquid inlet cylinder. touch. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves

In this embodiment, the triangle is a right triangle, the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid. The groove can further improve the wear-resistant sealing performance of the liquid inlet piston. The width of the groove is between 4.5mm and the distance between the grooves is 8.0mm. The side length of the diamond-shaped depression is 3.0mm, the depth of the diamond-shaped depression is 4.0mm, and the included angle at the center of the diamond-shaped depression is 10°.

After testing, the average life of the liquid inlet piston is 83.3 hours, which is 78.2% higher than that of the standard piston.

The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part. When the liquid discharge piston moves, it will pass through the liquid discharge pipe. When the diameter of the liquid discharge pipe is large, the liquid discharge piston will easily deviate slightly when passing through the liquid discharge pipe, causing fluid to seep into the space between the liquid discharge piston and the liquid discharge cylinder. Connect the outer hook with the inner hook so that the discharge piston fits closely to the discharge cylinder. When passing through the discharge pipe, because the relative position of the discharge piston and the discharge cylinder is fixed, the discharge piston There is no offset, thereby ensuring that the discharge fluid does not infiltrate between the discharge piston and the discharge cylinder.

The total solid removal rate of the cell wall after the treatment of the invention reaches 53.6%, while the total solid removal rate of the cell wall without the treatment of the invention is 40.3%.

It is measured that the power consumed by the cavitator of the present invention is 529W/kg.

Embodiment Four

The device of the present invention, as shown in FIG. 1 , includes a cavitator, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part.

The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Access to the hollow turning shaft. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. One end close to the liquid discharge part is in the shape of a sphere, and the end inside the fixed cavity is a spherical shape that matches the spherical shape of one end of the hollow rotating shaft. Spherical, the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity. The hollow rotating shaft is also provided with a baffle to close the fixed cavity, preventing fluid from entering the fixed cavity and damaging the connection structure between the hollow rotating shaft and the fixed cavity. The fixed cavity is fixed in the cavitation cavity by a bracket.

One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and a plurality of holes for gas flow are provided inside the cavitation induction head. In this embodiment, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder. Vanes are provided on the outer surface of the cavitation induction head near the liquid inlet part. The cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. Under the impetus of the fluid to the blades, the cavitation induction head drives the rotation of the orifice plate, and the shear and axial driving force on the rotation orifice plate can be Break and separate the blockage, effectively prevent the small hole from being blocked and reduce the energy consumed in the cavitation process. At the same time, the gas in the middle-east rotating shaft rotates into the liquid inlet cylinder through its port and the surface of the cavitation induction head, generating a large amount of bubbles. There are at least two rotating orifice plates superimposed on each other, one of which is fixed and the other rotating orifice is driven by the cavitation inducing head to rotate.

The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the holes forms an angle of 15° with the axis of the hollow rotating shaft, allowing the fluid mixed into the cavitation to enter the cavitation part.

The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe. The liquid inlet cylinder is provided with a liquid inlet piston. The liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head along the central axis of the cavitation part. back and forth movement.

The liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part, the liquid discharge cone part is directly connected to the cavitation part, and the liquid discharge cone part is connected with a liquid discharge pipe. The liquid discharge cylinder is provided with a liquid discharge piston, the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod, and the liquid discharge connecting rod is connected to a motor to drive the liquid discharge piston head along the central axis of the cavitation part back and forth movement.

During specific implementation, the liquid discharge piston is stationary, and the liquid inlet piston moves away from the cavitation part. At this time, the liquid inlet cone is in a negative pressure state, and the fluid enters through the liquid inlet pipe, and the fluid drives the blades, the hollow rotating shaft, and the rotating orifice plate to rotate. Under the adjustment of the regulating valve, the compressed air in the air storage tank enters the liquid inlet part through the hollow rotating shaft, and generates bubbles with a diameter of 2-5 microns to induce cavitation. The liquid inlet piston moves towards the cavitation part, and the fluid flow rate gradually decreases. The fluid quickly enters the rotating orifice plate and flows into the cavitation cavity, and its flow rate gradually increases. Then, the rotating orifice plate rotates to close the communication between the cavitation cavity and the liquid inlet cone, the liquid discharge piston moves to the cavitation part, the pressure in the cavitation cavity increases, the cavitation rapidly collapses, and local high temperature and high pressure are generated. And high-speed micro-jet, breaking the cell wall of biological cells. The liquid discharge piston moves away from the cavitation part, and the fluid in the cavitation cavity flows out through the liquid discharge pipe.

The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

The device can be connected with a pipe of corresponding diameter through a flange, and when the fluid passes through the device at a speed exceeding 3-10m/s, the liquid will be cavitated inside the device.

During operation, the liquid inlet piston and the liquid discharge piston are in direct contact with certain corrosive liquids, and are subjected to high pressure, which not only increases the friction between the liquid inlet piston and the liquid inlet cylinder, the liquid discharge piston and the liquid discharge cylinder Force, and solids are easily squeezed between the piston and the cylinder, increasing the wear of the piston.

As shown in Figure 2, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic pressure plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is directly connected to the inner surface of the liquid inlet cylinder. touch. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves

In this embodiment, the triangle is a right triangle, the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid. The groove can further improve the wear-resistant sealing performance of the liquid inlet piston. The width of the groove is between 4.5mm and the distance between the grooves is 8.0mm. The side length of the diamond-shaped depression is 4.5mm, the depth of the diamond-shaped depression is 4.0mm, and the included angle at the center of the diamond-shaped depression is 15°.

After testing, the average life of the liquid inlet piston is 75.8 hours, which is 65.7% higher than that of the standard piston.

The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part. When the liquid discharge piston moves, it will pass through the liquid discharge pipe. When the diameter of the liquid discharge pipe is large, the liquid discharge piston will easily deviate slightly when passing through the liquid discharge pipe, causing fluid to seep into the space between the liquid discharge piston and the liquid discharge cylinder. Connect the outer hook with the inner hook so that the discharge piston fits closely to the discharge cylinder. When passing through the discharge pipe, because the relative position of the discharge piston and the discharge cylinder is fixed, the discharge piston There is no offset, thereby ensuring that the discharge fluid does not infiltrate between the discharge piston and the discharge cylinder.

The total solid removal rate of the cell wall after the treatment of the invention reaches 58.3%, while the total solid removal rate of the cell wall without the treatment of the invention is 32.9%.

It is measured that the power consumed by the cavitator of the present invention is 534W/kg.

Embodiment five

The device of the present invention, as shown in FIG. 1 , includes a cavitator, and the cavitator includes a liquid inlet part, a cavitation part and a liquid discharge part.

The interior of the cavitation part is a cavitation cavity, and the cavity is provided with a hollow rotating shaft and a fixed cavity. The hollow rotating shaft is connected to the air storage tank through a regulating valve, and the compressed air in the gas storage tank passes through the regulating valve. Access to the hollow turning shaft. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. One end close to the liquid discharge part is in the shape of a sphere, and the end inside the fixed cavity is a spherical shape that matches the spherical shape of one end of the hollow rotating shaft. Spherical, the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity. The hollow rotating shaft is also provided with a baffle to close the fixed cavity to prevent fluid from entering the fixed cavity and damaging the connection structure between the hollow rotating shaft and the fixed cavity. The fixed cavity is fixed in the cavitation cavity by a bracket.

One end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and a plurality of holes for gas flow are provided inside the cavitation induction head. In this embodiment, the cavitation induction head is made of porous ceramics. The surface of the part of the hollow rotating shaft located inside the cavitation inducing head has a plurality of small holes, and the gas can pass through the small holes of the hollow rotating shaft in addition to entering the liquid inlet cylinder through the opening at the end of the hollow rotating shaft And the channel of the cavitation induction head enters the liquid inlet cylinder. Vanes are provided on the outer surface of the cavitation induction head near the liquid inlet part. The cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part. Under the impetus of the fluid to the blades, the cavitation induction head drives the rotation of the orifice plate, and the shear and axial driving force on the rotation orifice plate can be Break and separate the blockage, effectively prevent the small hole from being blocked and reduce the energy consumed in the cavitation process. At the same time, the gas in the middle-east rotating shaft rotates into the liquid inlet cylinder through its port and the surface of the cavitation induction head, generating a large amount of bubbles. There are at least two rotating orifice plates superimposed on each other, one of which is fixed and the other rotating orifice is driven by the cavitation inducing head to rotate.

The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the holes forms an angle of 15° with the axis of the hollow rotating shaft, allowing the fluid mixed into the cavitation to enter the cavitation part.

The liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part, the liquid inlet cone part is directly connected to the cavitation part, and the liquid inlet cone part is connected with a liquid inlet pipe. The liquid inlet cylinder is provided with a liquid inlet piston. The liquid inlet piston includes a liquid inlet piston head and a liquid inlet connecting rod. The liquid inlet connecting rod is connected to a motor to drive the liquid inlet piston head along the central axis of the cavitation part. back and forth movement.

The liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part, the liquid discharge cone part is directly connected to the cavitation part, and the liquid discharge cone part is connected with a liquid discharge pipe. The liquid discharge cylinder is provided with a liquid discharge piston, the liquid discharge piston includes a liquid discharge piston head and a liquid discharge connecting rod, and the liquid discharge connecting rod is connected to a motor to drive the liquid discharge piston head along the central axis of the cavitation part back and forth movement.

During specific implementation, the liquid discharge piston is stationary, and the liquid inlet piston moves away from the cavitation part. At this time, the liquid inlet cone is in a negative pressure state, and the fluid enters through the liquid inlet pipe, and the fluid drives the blades, the hollow rotating shaft, and the rotating orifice plate to rotate. Under the adjustment of the regulating valve, the compressed air in the air storage tank enters the liquid inlet part through the hollow rotating shaft, and generates bubbles with a diameter of 2-5 microns to induce cavitation. The liquid inlet piston moves towards the cavitation part, and the fluid flow rate gradually decreases. The fluid quickly enters the rotating orifice plate and flows into the cavitation cavity, and its flow rate gradually increases. Then, the rotating orifice plate rotates to close the communication between the cavitation cavity and the liquid inlet cone, the liquid discharge piston moves to the cavitation part, the pressure in the cavitation cavity increases, the cavitation rapidly collapses, and local high temperature and high pressure are generated. And high-speed micro-jet, breaking the cell wall of biological cells. The liquid discharge piston moves away from the cavitation part, and the fluid in the cavitation cavity flows out through the liquid discharge pipe.

The cavitation part includes a hollow shell, the hollow shell includes an outer layer, an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and the adjacent flexible support frames are filled with sound-absorbing fiber, reduces noise and reduces vibration.

The device can be connected with a pipe of corresponding diameter through a flange, and when the fluid passes through the device at a speed exceeding 3-10m/s, the liquid will be cavitated inside the device.

During operation, the liquid inlet piston and the liquid discharge piston are in direct contact with certain corrosive liquids, and are subjected to high pressure, which not only increases the friction between the liquid inlet piston and the liquid inlet cylinder, the liquid discharge piston and the liquid discharge cylinder Force, and solids are easily squeezed between the piston and the cylinder, increasing the wear of the piston.

As shown in Figure 2, the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic pressure plate and a liquid inlet circlip, and the side surface of the liquid inlet cup is directly connected to the inner surface of the liquid inlet cylinder. touch. The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the grooves is triangular, and the smallest corner of the triangle faces the fluid. A plurality of diamond-shaped depressions are arranged at intervals between two adjacent grooves

In this embodiment, the triangle is a right triangle, the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid. The groove can further improve the wear-resistant sealing performance of the liquid inlet piston. The three adjacent diamond-shaped depressions are arranged in an isosceles triangle, and the cross-section of the diamond-shaped depressions is triangular. The width of the groove is between 4.5mm and the distance between the grooves is 5.0mm. The side length of the diamond-shaped depression is 3.0mm, the depth of the diamond-shaped depression is 4.0mm, and the included angle at the center of the diamond-shaped depression is 10°.

After testing, the average life of the liquid inlet piston is 149.3 hours, which is 138.2% higher than that of the standard piston.

The liquid discharge piston includes a liquid discharge steel core, a liquid discharge cup, a liquid discharge hydraulic plate and a liquid discharge circlip, and the side surface of the liquid discharge cup is in direct contact with the inner surface of the liquid discharge cylinder. A plurality of outer hooks extending along the thickness direction of the drain cup are arranged at intervals on the side surface of the drain cup, and a plurality of inner hooks matching the outer hooks are arranged at intervals on the inner surface of the drain cylinder. A hook member, the inner hook member is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part. When the liquid discharge piston moves, it will pass through the liquid discharge pipe. When the diameter of the liquid discharge pipe is large, the liquid discharge piston will easily deviate slightly when passing through the liquid discharge pipe, causing fluid to seep into the space between the liquid discharge piston and the liquid discharge cylinder. Connect the outer hook with the inner hook so that the discharge piston fits closely to the discharge cylinder. When passing through the discharge pipe, because the relative position of the discharge piston and the discharge cylinder is fixed, the discharge piston There is no offset, thereby ensuring that the discharge fluid does not infiltrate between the discharge piston and the discharge cylinder.

The total solid removal rate of the cell wall after the treatment of the invention reaches 51.6%, while the total solid removal rate of the cell wall without the treatment of the invention is 42.6%.

It is measured that the power consumed by the cavitator of the present invention is 512W/kg.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (1)

1. A kind of can produce high-concentration biogas production equipment, it is characterized in that, comprises mixing tank, grinding tank, storage tank, first fermentation tank and second fermentation tank, mixing tank and grinding tank, grinding tank and storage tank, storage tank It is connected with the first fermenter and the first fermenter and the second fermenter through pipelines, and a delivery pump is installed on the pipeline, and the two ends of the fluid pipeline are connected to the second fermenter, and the fluid pipeline is installed There is a fluid pump, the two ends of the biogas circulation pipeline are connected to the second fermentation tank, an air pump is connected to the biogas circulation pipeline, and a super filter is also connected to the biogas circulation pipeline; the second fermentation tank A hot water circulation pipe for maintaining the internal temperature of the second fermentation tank is installed on the outer wall; a pH value testing device is connected to the second fermentation tank; a cavitator is included, and the cavitator includes a liquid inlet part, a cavitation part and The liquid discharge part; the inside of the cavitation part is a cavitation cavity, and a hollow rotating shaft and a fixed cavity are arranged in the cavitation cavity, and the hollow rotating shaft is connected to the gas storage tank through a regulating valve, and the compression in the gas storage tank The air enters the hollow rotating shaft through the regulating valve. The hollow rotating shaft is set at the central axis of the cavitation part and extends to the liquid inlet part. The spherical shape at one end of the shaft matches the spherical shape, and the two fit together so that the hollow rotating shaft is rotatably connected to the fixed cavity; the end of the hollow rotating shaft located at the liquid inlet part is provided with a cavitation induction head, and the cavitation The interior of the induction head is provided with a plurality of channels for gas flow, the cavitation induction head is provided with blades on the outer surface close to the liquid inlet part, and the cavitation induction head is provided with a rotating orifice plate close to the bottom surface of the cavitation part, The rotating orifice plate is provided with a plurality of semicircular holes arranged at intervals along its edge, and the axis of the opening is at an angle of 15° to the axis of the hollow rotating shaft; the liquid inlet part is divided into a liquid inlet cone part and a liquid inlet cylinder part , the liquid inlet cone is directly connected to the cavitation part, and the liquid inlet cone is connected with a liquid inlet pipe, and the liquid inlet cylinder is provided with a liquid inlet piston, and the liquid inlet piston includes a liquid inlet The piston head and the liquid inlet connecting rod, the liquid inlet connecting rod is connected to the motor, which drives the liquid inlet piston head to move back and forth along the central axis of the cavitation part; the liquid discharge part is also divided into a liquid discharge cone part and a liquid discharge cylinder part , the discharge taper is directly connected to the cavitation part, and the discharge taper is connected with a discharge pipe, the discharge cylinder is provided with a discharge piston, and the discharge piston includes a discharge The piston head and the liquid discharge connecting rod are connected with a motor to drive the liquid discharge piston head to move back and forth along the central axis of the cavitation part; the cavitation part includes a hollow shell, and the hollow shell includes an outer layer and an inner layer and a ferrule, the inner surface of the outer layer is provided with a plurality of flexible support frames at intervals, and sound-absorbing fibers are filled between adjacent flexible support frames to reduce noise and vibration; the hollow rotating shaft is also provided with a closed and fixed The baffle plate of the cavity; the cavitation induction head is made of porous ceramics, and the surface of the part of the hollow rotation shaft located inside the cavitation induction head has a plurality of small holes, and the gas can pass through the end of the hollow rotation shaft The opening enters the liquid inlet cylinder and can also be rotated through the hollow The small hole of the moving shaft and the channel of the cavitation induction head enter the liquid inlet cylinder; at least two of the rotating orifice plates are superimposed on each other, one of which is fixed and the other is controlled by the cavitation induction head. driven to rotate; the liquid inlet piston includes a liquid inlet steel core, a liquid inlet cup, a hydraulic inlet plate and a liquid inlet circlip, the side surface of the liquid inlet cup is in direct contact with the inner surface of the liquid inlet cylinder, The side surface of the liquid inlet cup is provided with a plurality of grooves extending along the circumferential direction of the cup at intervals. The cross section of the groove is a triangle, and the smallest corner of the triangle faces the fluid. Two adjacent grooves A plurality of diamond-shaped depressions are arranged at intervals; the triangle is a right triangle, and the other two acute angles of the triangle are 30° and 60°, and the 30° acute angle faces the direction of the fluid; the groove can further improve the wear resistance of the liquid inlet piston Sealing performance; the width of the groove is between 4.5mm and the distance between the grooves is 5.0mm; the side length of the diamond-shaped depression is 3.0mm, the depth of the diamond-shaped depression is 4.0mm, and the angle between the center of the diamond-shaped depression is 10°; the draining piston includes a draining steel core, a draining cup, a draining hydraulic plate and a draining circlip, and the side surface of the draining cup is in direct contact with the inner surface of the draining cylinder, so The side surface of the drain cup is provided with a plurality of outer hooks extending along the thickness direction of the drain cup at intervals, and the inner surface of the drain cylinder is provided with a plurality of inner bends matching the outer hooks at intervals. A hook piece, the inner hook piece is provided in a groove extending along the length direction of the inner surface of the liquid discharge cylindrical part.