CN116428819A - A high-efficiency vacuum blast drying cabinet - Google Patents

Abstract

The invention relates to the technical field of drying cabinets, in particular to a high-efficiency vacuum blast drying cabinet, which includes a cabinet body, a heating device is arranged in the cabinet body, a vacuum system and a blast system are connected to the cabinet body, and the vacuum system includes an air extraction pipe and a return air pipe , the exhaust pipe is connected with a gas-liquid separator and a vacuum pump, the return air pipe is connected with a filter, and a return air valve is installed on the return air pipe; the blast system includes an air amplifier and an exhaust pipe, the exhaust pipe is connected with the cabinet, and the exhaust pipe An exhaust valve is installed on the air pipe, the air inlet of the air amplifier is connected with an air source pipe, the drainage port of the air amplifier is connected with the cabinet body, and a circulation pipe is connected between the outlet of the air amplifier and the cabinet body, and there is a blower connected between the outlet of the air amplifier and the cabinet body. Tube. This solution adds a vacuum system on the basis of blast drying, which can be applied to the drying of lumen instruments, and at the same time improve the drying efficiency to achieve efficient drying.

Description

A high-efficiency vacuum blast drying cabinet

technical field

The invention relates to the technical field of drying cabinets, in particular to a high-efficiency vacuum blast drying cabinet.

Background technique

At present, the drying of medical devices is generally completed through drying cabinets, which include blower type and vacuum type. The drying principle of the blower drying cabinet is that the motor drives the fan to rotate, and the driving wind flows quickly in the working room along the air duct, and combines with the heating device in the drying cabinet to dry the equipment. The drying principle of the vacuum drying cabinet is based on heating, by repeatedly evacuating the working room to extract the gas and evaporated water vapor, so as to realize the drying of the equipment. For luminal surgical medical devices, such as luminal instruments for laparoscopic surgery, the cavity is relatively narrow, and the blast drying cabinet cannot directly contact the cavity of luminal devices, so it cannot be used for luminal devices. to dry. Although the vacuum drying cabinet can remove the moisture in the cavity of the lumen device by vacuuming, so as to achieve drying, but because the cavity of the lumen device is relatively small, it takes a long time to complete the drying, and the drying efficiency not tall.

Contents of the invention

The present invention intends to provide a high-efficiency vacuum blast drying cabinet, which is suitable for drying lumen instruments and solves the problem of low drying efficiency of the existing vacuum drying cabinets.

In order to solve the above problems, achieve the purpose of being suitable for the drying of lumen instruments and improving the drying efficiency, the present invention provides the following technical solutions:

A high-efficiency vacuum blast drying cabinet, including a cabinet body, a heating device is arranged in the cabinet body, a vacuum system and a blast system are connected to the cabinet body, the vacuum system includes an air suction pipe and a return air pipe, and the air suction pipe is connected to a gas-liquid separator and Vacuum pump, the return air pipe is connected with a filter, and a return air valve is installed on the return air pipe; the blast system includes an air amplifier and an exhaust pipe, the exhaust pipe is connected with the cabinet, and an exhaust valve is installed on the exhaust pipe. The air inlet of the amplifier is connected with an air source pipe, the drainage port of the air amplifier is connected with the cabinet body with a circulation pipe, and the outlet of the air amplifier is connected with a blower pipe with the cabinet body.

The principle of this program is:

Based on the problems raised by the background technology, the applicant intends to develop a drying cabinet that combines air blast and vacuum. As a result, there is a large space in the equipment that cannot be used. To ensure the same effective space, it is necessary to expand the dimensions of the working room and the drying cabinet, and the cost will also increase. Therefore, the applicant thought of installing the fan outside. However, although the fan can save the setting of the air duct and reduce the size of the product to a certain extent, the fan cannot withstand the high-temperature and high-humidity gas in the drying cabinet, so the wind blows into the drying cabinet. It can only be directly discharged in the back, and the circulating blast cannot be performed, the drying efficiency is limited, and the loss of heat and air volume is large, so it is not suitable for practical use.

After many studies, the inventor finally developed a high-efficiency vacuum blast drying cabinet, which is used to heat the equipment through the heating device, the blast system is used to circulate the air in the cabinet, and the vacuum system is used to vacuum the cabinet , through repeated alternate vacuuming and blowing, the rapid drying of instruments can be realized, not only suitable for the drying of ordinary instruments, but also suitable for the drying of lumen instruments. Among them, the principles of the blast system and the vacuum system are summarized as follows:

The principle of the blower system is: the air source pipe is connected to the working air source, the compressed gas enters the air amplifier through the air source pipe, the compressed gas is used as the power source, and the gas in the cabinet is pulled into the air amplifier through the circulation pipe to form a high-pressure, After the high-speed air flow, it enters the cabinet body through the blast pipe; most of the gas in the cabinet flows back into the air amplifier through the circulation pipe, and a small part of the gas is discharged through the exhaust pipe. dry.

The principle of the vacuum system is: the vacuum pump evacuates the cabinet through the vacuum tube, the moisture on the equipment is heated and evaporated into water vapor, and is drawn out together with the gas. After the vacuum is dried to a certain extent, it pauses, and the fresh air is sucked in through the return air tube, and then again. Vacuum, so cycle to achieve vacuum drying.

The beneficial effects of this program are:

1. A vacuum system is added on the basis of blast drying, which can be applied to the drying of lumen instruments.

2. Drying is carried out by combining air blowing and vacuuming, which can greatly improve the drying efficiency and achieve efficient drying.

3. The air amplifier is used for blasting, and the air amplifier is placed outside the cabinet, which solves the problem of space waste caused by the existing built-in fan-type drying cabinet. The air amplifier is small in size and occupies a small space, ensuring the same effective working space Under the circumstances, the overall size of the cabinet does not need to be enlarged, which avoids the increase of equipment cost.

4. With the air amplifier, only a small amount of compressed air is used as the air source to achieve a large air flow, which reduces energy consumption and saves resources.

5. The air amplifier can withstand high temperature and high humidity gas, so the external type can also smoothly carry out gas circulation.

6. The gas-liquid separator is used to separate the water vapor in the extracted gas to prevent water vapor from entering the vacuum pump and protect the vacuum pump.

7. The filter is used to filter the inhaled fresh air. On the one hand, it prevents impurities from inhaling and contaminating the equipment. On the other hand, it prevents the water vapor in the air from being brought in and attached to the equipment, prolonging the drying process and reducing the drying efficiency.

Further, the circulation pipe is connected to the center of the top of the cabinet, the blast pipe is arranged at the center of the bottom of the cabinet, and the bottom of the cabinet is provided with a diversion structure, and the wind blown by the blast pipe is diverted by the diversion structure and then enters the cabinet.

Beneficial effects: 1. Since the hot air has the ability to float upwards, setting the blowing pipe at the bottom of the cabinet will help the hot air blown in to fill the cabinet more quickly. Similarly, setting the circulation pipe at the top of the cabinet will help The high-temperature and high-humidity gas is drawn out for circulation; 2. The air inlet pipe is set in the center of the bottom of the cabinet to make the wind blow into the cabinet more evenly; 3. The shunt structure is used to disperse the blown wind evenly and send it into the cabinet, which can Make the equipment more evenly heated.

Further, the distribution structure includes a first air distribution plate for air distribution, the first air distribution plate is V-shaped, the first air distribution plate is evenly distributed with first air distribution holes, the first air distribution plate is located between the air inlet pipe and cabinet connection.

Beneficial effect: under the blockage of the V-shaped first air distribution plate, part of the wind blown in by the air inlet pipe is diverted from both sides along the first air distribution plate, and the other part directly passes through the first air distribution hole through the first air distribution hole. The air distribution plate blows away vertically upwards, thereby realizing the air distribution, so that the wind enters the cabinet relatively evenly, with simple structure and good dispersion effect.

Further, the air distribution structure also includes an air collecting hood, the air collecting hood is connected to the bottom of the cabinet body, the air inlet pipe is connected to the bottom of the air collecting hood, the first air distribution plate is arranged in the air collecting hood, and the top of the air collecting hood is sealed with a second distribution plate. The wind plate, the second air distribution plate is evenly distributed with the second air distribution holes; the top of the air collection hood is provided with an air collection box, the bottom of the air collection box is connected with the air collection hood, the top of the air collection box is open and the opening is sealed with the first Three air distribution plates, the third air distribution holes are evenly distributed on the third air distribution board, the distribution density of the third air distribution holes is greater than the distribution density of the second air distribution holes, and the third air distribution holes and the second air distribution holes Stagger settings.

Beneficial effects: 1. The wind diverted by the first air distribution plate can be dispersed again when it passes through the second air distribution plate, and the second air distribution is performed, and the wind distribution effect is better and more uniform; 2. The wind collecting hood is provided It can gather all the wind diverted by the first air distribution plate to the second air distribution plate to avoid the wind from missing and ensure the wind distribution effect; 3. If the air inlet is directly opened at the bottom of the drying cabinet and the first air distribution plate is installed, then The second air distribution plate needs to be made large enough to make all the wind contact with it, which will lead to excessive occupation of the working space of the cabinet. In this plan, a wind collecting hood is set to collect the wind, and the wind collecting hood is placed outside At the bottom of the cabinet, the second air distribution plate and the air collection hood will not occupy the internal working space of the cabinet, and the second air distribution plate only needs to be as large as the opening of the air collection hood without connecting with the inner wall of the cabinet , which saves the material consumption of the second air distribution plate and saves the cost; 4. Setting the third air distribution plate can carry out the third stage air distribution, further improving the effect of air distribution; 5. The air collecting box is used to provide the wind from the second The air distribution plate reaches the height required by the third air distribution plate, and is also used to gather all the wind to the third air distribution plate for the third stage of wind distribution to ensure the wind distribution effect.

Further, a heating pipe is communicated between the air amplifier and the blowing pipe.

Beneficial effects: adding a heating pipe between the air amplifier and the blowing pipe can preheat the gas blown into the cabinet body, that is, blowing hot air, and the drying effect is better.

Further, the air source pipe is communicated with a detection piece for detecting whether there is an air source in the air source pipe.

Beneficial effects: such setting can ensure that compressed air source enters the air amplifier, ensures normal operation of the system, and is convenient for maintenance.

Further, the exhaust pipe is connected with an exhaust cylinder, the exhaust valve is a butterfly valve, and the exhaust valve is installed in the exhaust cylinder.

Beneficial effects: 1. The exhaust cylinder is provided to facilitate the collection of water vapor carried in the discharged gas, and the collected water vapor can be recycled; 2. When vacuuming, the flap of the butterfly valve is adsorbed to a closed state under the action of negative pressure, thereby When the butterfly valve is closed, vacuuming can be carried out smoothly; after the wind blows in, the air pressure in the cabinet increases, and the flap rotates reversely to the open state under the action of air pressure, and the exhaust can be carried out smoothly; therefore, the butterfly valve can be used to realize automatic opening and closing, automatic 3. The butterfly valve is a mechanical valve. Compared with the electric control valve, it is not affected by power failure and circuit damage, and has higher reliability. reliability of the road system.

Further, the gas-liquid separator is connected with the first drain pipe, the exhaust tube is connected with the second drain pipe, and the second drain pipe is connected with the first drain pipe.

Beneficial effects: such setting can collect the water collected by the exhaust cylinder and the gas-liquid separator and discharge them together, which is convenient for subsequent unified recovery.

Further, a pressure sensor for detecting the pressure inside the cabinet is installed on the cabinet.

Beneficial effects: the pressure sensor is used to detect the pressure in the cabinet to reflect the degree of vacuum, which is convenient for knowing the degree of dryness, and the pressure sensor is directly connected to the cabinet, so that the detection accuracy is higher.

Further, the return air valve is a normally open electromagnetic valve.

Beneficial effects: the normally open solenoid valve is closed when it is powered on, and opened when it is powered off. When the vacuum pump is powered on, the return air valve can be kept closed to achieve smooth vacuuming. When the equipment is powered off and not in use, the return air valve can be kept open for pressure relief. , to avoid the pressure difference inside and outside the cabinet, causing the danger of positive pressure explosion.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the structural representation after removing the front cabinet door of the present invention;

Fig. 3 is a partial structural representation of the present invention;

Fig. 4 is a schematic diagram of another viewing angle of Fig. 3;

Fig. 5 is a schematic structural view of the shunt structure of the present invention;

Fig. 6 is a schematic diagram of the splitting structure of the present invention after removing the third air-distributing plate;

Fig. 7 is a schematic diagram of the flow splitting structure of the present invention after removing the second air splitting plate.

Detailed ways

The following is further described in detail through specific implementation methods:

The reference signs in the drawings of the description include: cabinet body 1, cabinet door 11, instrument basket 12, support plate 13, working room 14, distribution structure 2, wind collecting box 21, third air distribution plate 22, third air distribution board Hole 23, wind collecting hood 24, second air distribution plate 25, second air distribution hole 26, first air distribution plate 27, first air distribution hole 28, air inlet 29, exhaust pipe 3, vacuum pump 31, gas-liquid separation Device 32, first drain pipe 33, filter 34, return air valve 35, return air pipe 36, solenoid valve 4, air source pipe 41, exhaust pipe 42, exhaust tube 43, second drain pipe 44, air amplifier 45, heating pipe 46, blast pipe 47, circulation pipe 48.

Example:

As shown in Figures 1 and 2, a high-efficiency vacuum blast drying cabinet includes a cabinet body 1, and a heating device is installed in the working room 14 of the cabinet body 1. The heating device adopts an electric heating wire, and the electric heating wire is laid on the working room 14 inside the sidewall. The front and rear of the studio 14 are hinged with cabinet doors 11, and the left and right side walls of the studio 14 are fixed with five groups of support plates 13 by bolts one by one. The support plates 13 are used to place the instrument basket 12, which are evenly distributed with ventilation holes.

The cabinet body 1 is connected with a vacuum system and a blast system. The blast system is used to blow hot air into the cabinet body 1. The hot air enters the working room 14 from the bottom of the cabinet body 1. The distribution structure 2 evenly distributed in the working chamber 14. As shown in Fig. 5, Fig. 6 and Fig. 7, the air distribution structure 2 includes an air collecting hood 24, a first air dividing plate 27, a second air dividing plate 25, an air collecting box 21 and a third air dividing plate 22, and the air collecting hood 24 is trapezoidal and its top communicates with the bottom of working chamber 14, and the air inlet 29 is arranged at the center of the bottom of the wind collecting hood 24. The first air distribution plate 27 is located directly above the air inlet 29 with a gap between the air inlet 29 and the first air distribution plate 27 is evenly distributed with first air distribution holes 28 . The first wind-distributing plate 27 is V-shaped and has the same length as the wind-collecting hood 24, the top of the first air-distributing plate 27 is flush with the top of the wind-collecting hood 24, and the top two ends of the first wind-distributing plate 27 are fixed by bolts On the edges at both ends of the wind collecting hood 24 top.

The top area of the wind collecting hood 24 is smaller than the bottom area of the working room 14, and the second air distribution plate 25 is sealed on the top of the wind collecting hood 24 by screws, and the second air distribution plate 25 is evenly distributed with the second air distribution holes 26. The distribution density of the second air distribution holes 26 is the same as that of the first air distribution holes 28 . A rectangular wind collecting box 21 is installed on the top of the wind collecting hood 24, and the wind collecting box 21 is fixed in the working chamber 14 by bolts. The bottom of the wind collecting box 21 communicates with the wind collecting hood 24, the top of the wind collecting box 21 is open and the opening is larger than the opening on the top of the wind collecting hood 24, the top of the wind collecting box 21 is sealed with a third wind distribution plate 22, the third wind distribution plate 22 The area is greater than the area of the second air distribution plate 25 . The third air distribution plate 22 is evenly distributed with the third air distribution holes 23, and the distribution density of the third air distribution holes 23 is smaller than the distribution density of the second air distribution holes 26, and the third air distribution holes 23 and the second air distribution holes 26 staggered settings.

3 and 4, the blast system includes an air amplifier 45, a heating pipe 46, a blast pipe 47, a circulation pipe 48 and an exhaust pipe 42. The exhaust pipe 42 communicates with the top center of the cabinet body 1, and the exhaust An exhaust tube 43 is communicated with the pipe 42 , a butterfly valve (not shown in the figure) is installed in the exhaust tube 43 , and a second drain pipe 44 is communicated with the bottom of the exhaust tube 43 . In the present embodiment, the air amplifier 45 adopts the existing air amplifier 45, the mouth of which the compressed gas is input is the air inlet, the mouth that drives the surrounding gas to enter is the drainage mouth, and the mouth of the gas discharge is the ejection outlet, and its structure is the existing air amplifier 45. technology, so I won’t go into details here. The air inlet of air amplifier 45 is communicated with air source pipe 41, and solenoid valve 4 is installed on the air source pipe 41, is also connected with tee (not shown in the figure) on the air source pipe 41, and one end of tee is communicated with air source connector It is used to connect an external air source, such as a hospital’s compressed air source interface. The other end of the tee is connected to a detection piece (not shown) for detecting whether there is an air source in the air supply pipe 41. In this embodiment, the detection piece adopts sns Diaphragm adjustable pressure switch. The drainage port of the air amplifier 45 is connected with the circulation pipe 48 between the top of the cabinet body 1, and the outlet of the air amplifier 45 is connected with a heating pipe 46. The heating pipe 46 adopts an electric heating pipe in the prior art, and the heating pipe 46 is connected to the air inlet 29. A blast pipe 47 is communicated between them, and the heating pipe 46 and the blast pipe 47 are coated with an insulating layer, and the insulating layer adopts an insulating sponge.

As shown in Fig. 3 and Fig. 4, the vacuum system includes a suction pipe 3 and a return pipe 36, the suction pipe 3 is connected with a gas-liquid separator 32 and a vacuum pump 31, the top of the gas-liquid separator 32 is connected with the vacuum pump 31, and the gas-liquid separator The bottom of 32 is communicated with the first drain pipe 33, and the first exhaust pipe 42 is communicated with the second exhaust pipe 42. In this embodiment, the gas-liquid separator 32 adopts a condensation tank. The air return pipe 36 is communicated with a filter 34, and an air return valve 35 is installed on the air return pipe 36, and the air return valve 35 adopts a normally open electromagnetic valve. The vacuum system also includes a pressure sensor (not shown in the figure), and the pressure sensor is communicated with the top of the cabinet body 1 .

The specific implementation process is as follows:

Put the cleaned instrument into the instrument basket 12 and then put it into the working room 14, start the heating device to heat the instrument, and simultaneously the blowing system blows air into the working room 14 for preheating. The moisture on the instrument evaporates to form water vapor, the air pressure in the working room 14 increases, the flap of the butterfly valve is pressed and rotated to the open state, so that the butterfly valve is opened, most of the gas and water vapor are automatically discharged through the exhaust pipe 42, and the exhaust During the process, water vapor is collected in the exhaust cylinder 43.

After the preheating is completed, the vacuum pump 31 is started to evacuate, the gas and water vapor in the working chamber 14 are drawn out, and the moisture in the instrument cavity is taken out thereupon, thereby drying the instrument. If the gas contains water vapor, it can be cooled in the condensation tank through the condensation tank, and will not enter the vacuum pump 31, and the vacuum pump 31 is protected. When vacuuming, the return air valve 35 is energized. Since the return air valve 35 uses a normally open solenoid valve 4, it is closed when energized, so the return air pipe 36 is closed; at the same time, the flap of the butterfly valve is adsorbed to the closed state under the action of negative pressure. , that is, the butterfly valve is closed, the exhaust pipe 42 is closed, and the working chamber 14 can be vacuumed smoothly. After the vacuum is maintained for a certain period of time, the return air valve 35 is opened, fresh air is sucked in from the return air pipe 36, and then the vacuum is pumped again, and so on, so as to realize vacuum drying.

The pressure sensor monitors the pressure of the working chamber 14 in real time to detect its vacuum degree. When the vacuum degree of the working chamber 14 meets the appropriate requirements, it means that the vacuum drying is up to standard. At this time, the blast system is turned on to blow air to the working chamber 14 to realize blast drying. . After the drying is completed, if the standard is reached, the piece can be picked up. If the standard is not reached, the vacuum drying is performed again, and so on, until the instrument is completely dry.

The specific operation of blast drying is: open the electromagnetic valve 4, the compressed gas is passed into the air amplifier 45, and the compressed gas is used as a power source to drive the surrounding air to flow to the amplifier, that is, the gas in the working chamber 14 is drawn to the air through the circulation pipe 48. In the amplifier 45, a high-pressure, high-speed airflow is formed and ejected from the ejection port. After being heated by the heating pipe 46, the high-pressure, high-speed airflow enters the distribution structure 2 through the blast pipe 47, and passes through the first air distribution plate 27 and the second air distribution plate. 25 and the third air distribution plate 22 evenly enter the working chamber 14 after breaking up and splitting. Most of the gas in the working chamber 14 is drawn out to the air amplifier 45 through the circulation pipe 48 for circulation, and a small part of the gas is directly discharged from the exhaust pipe 42 (the air pressure inside the working chamber 14 increases when the gas is blown in, and the butterfly valve is pressed open. Exhaust pipe 42 can be exhausted), so repeatedly, realize the blast cycle drying of working chamber 14.

In this embodiment, drying is carried out by combining air blowing and vacuuming, which can be applied to the drying of lumen instruments, and the drying efficiency is greatly improved, and efficient drying can be realized. In addition, this embodiment abandons the fan used in the traditional drying cabinet, and uses the air amplifier 45 to blow air. Only a small amount of compressed air can be used to achieve the purpose of large air flow, saving resources. The air amplifier 45 is small in size and does not take up too much space, which solves the problem of waste of space, ensures an equally effective working space without increasing the volume of the equipment, and effectively controls the equipment cost.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, some modifications and improvements can also be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (10)

1. The utility model provides a high-efficient vacuum blast drying cabinet, includes the cabinet body, is provided with heating device in the cabinet body, its characterized in that: the cabinet body is communicated with a vacuum system and a blower system, the vacuum system comprises an exhaust pipe and a return air pipe, the exhaust pipe is communicated with a gas-liquid separator and a vacuum pump, the return air pipe is communicated with a filter, and a return air valve is arranged on the return air pipe; the air blowing system comprises an air amplifier and an exhaust pipe, wherein the exhaust pipe is communicated with the cabinet body, an exhaust valve is arranged on the exhaust pipe, an air inlet of the air amplifier is communicated with an air source pipe, a circulating pipe is communicated between a drainage port of the air amplifier and the cabinet body, and a blast pipe is communicated between an ejection port of the air amplifier and the cabinet body.

2. The efficient vacuum forced air drying cabinet of claim 1, wherein: the circulating pipe is communicated with the center of the top of the cabinet body, the blast pipe is arranged at the center of the bottom of the cabinet body, the bottom of the cabinet body is provided with a diversion structure, and wind blown by the blast pipe enters the cabinet body after being diverted by the diversion structure.

3. A high efficiency vacuum forced air drying cabinet according to claim 2, wherein: the air distribution structure comprises a first air distribution plate for distributing air, the first air distribution plate is in a V shape, first air distribution holes are uniformly distributed in the first air distribution plate, and the first air distribution plate is located at the joint of the air inlet pipe and the cabinet body.

4. A high efficiency vacuum forced air drying cabinet according to claim 3, wherein: the diversion structure further comprises a wind collecting cover, the wind collecting cover is communicated with the bottom of the cabinet body, the air inlet pipe is communicated with the bottom of the wind collecting cover, the first wind dividing plate is arranged in the wind collecting cover, the top of the wind collecting cover is sealed with a second wind dividing plate, and second wind dividing holes are uniformly distributed on the second wind dividing plate; the top of the wind collecting cover is provided with a wind collecting box, the bottom of the wind collecting box is communicated with the wind collecting cover, a third wind dividing plate is sealed at the opening of the top of the wind collecting box, third wind dividing holes are uniformly distributed on the third wind dividing plate, the distribution density of the third wind dividing holes is greater than that of the second wind dividing holes, and the third wind dividing holes and the second wind dividing holes are staggered.

5. The efficient vacuum forced air drying cabinet of claim 1, wherein: a heating pipe is communicated between the air amplifier and the blast pipe.

6. The efficient vacuum forced air drying cabinet of claim 1, wherein: the air source pipe is communicated with a detection piece for detecting whether an air source exists in the air source pipe.

7. The efficient vacuum forced air drying cabinet of claim 1, wherein: the exhaust pipe is communicated with an exhaust barrel, the exhaust valve is a butterfly valve, and the exhaust valve is arranged in the exhaust barrel.

8. The efficient vacuum forced air drying cabinet of claim 7, wherein: the gas-liquid separator is communicated with a first drain pipe, the exhaust barrel is communicated with a second drain pipe, and the second drain pipe is communicated with the first drain pipe.

9. A high efficiency vacuum forced air drying cabinet according to any one of claims 1-8, wherein: the cabinet body is provided with a pressure sensor for detecting the pressure in the cabinet body.

10. The efficient vacuum forced air drying cabinet of claim 9, wherein: the return air valve is a normally open electromagnetic valve.

Images