CN102812915B - Sealed net cage feculence filtering and collecting device - Google Patents

Abstract

A device for filtering and collecting dirt in a closed net cage, which includes a dirt collection container (1), the dirt collection container (1) being installed at the bottom of a closed net cage (2), and a rectangular metal frame is arranged at the bottom of the closed net cage (2) (3), net cage (2) bottom and metal frame (3) are consolidated by rope, and the first gas-liquid mixing device (4) and the second gas-liquid mixing device (5) are installed on the metal frame (3), the second The first gas-liquid mixing device (4) is connected with a dirt conveying pipe (6), the second gas-liquid mixing device (5) is connected with a liquid lifting pipe (7), and the dirt conveying pipe (6) is connected to the dirt collecting On the container (1), compressed air pipes (8) are installed on the first gas-liquid mixing device (4) and the second gas-liquid mixing device (5); the bottom edge of the closed cage of the present invention is connected with the upper edge of the container by a hoop form, the connection is fast and firm, using compressed air as the air source, and adopting the air lifting liquid method for water exchange and dirt collection, suitable for low lift and large flow conditions, which simplifies the complexity of the device and reduces the breakage of dirt particles Block the passage.

Description

A kind of closed net cage dirt filtering and collecting device

technical field

The present invention relates to the technical field of aquaculture machinery, and specifically relates to a machine installed at the bottom of the net cage for continuous water exchange in the closed net cage, collecting the dirt collected at the bottom of the closed net cage and transporting it to the water surface for unified treatment. Filter collection device.

Background technique

my country is a big country in aquaculture, and the society's demand for freshwater fish continues to grow. However, my country's land resources are scarce, and it is unlikely to dig fish ponds without limit in the future. In addition, the output and benefits of pond culture have become saturated. In order to meet people's Talking about the demand for aquatic fish, we can only continuously increase the production capacity per unit area in the existing waters, and using inland waters for cage culture is an important method to increase the production capacity per unit area. However, freshwater cage culture has the problems of polluting the cultured waters and uncontrollable water quality. Due to the increase of nitrogen, phosphorus and organic matter in the water body during the cage culture process, the self-purification capacity of the water body is exceeded, which may lead to eutrophication of the water body. degradation and deterioration of water quality. At the same time, the disease infection of the external surface water body often makes the cage culture suffer a devastating blow. At present, due to the inability to solve the problem of collection and treatment of cage sewage, the development of cage aquaculture in reservoirs and lakes is severely restricted.

The existing solution to the collection and treatment of net cage sewage is mainly the closed fish tank technology on water. This technology mainly includes a glass fiber reinforced plastic tank-shaped culture system, a monitoring system, and a water circulation system. However, the equipment is huge, difficult to install, limited by water conditions, and expensive. Therefore difficult to promote.

Contents of the invention

In the existing net cage culture process, because the net cage sewage collection and treatment technology is immature, the nitrogen, phosphorus and organic matter in the net cage culture water body continue to increase, which exceeds the self-purification capacity of the water body and pollutes the culture water area. The purpose of the present invention is to solve The collection of solid particle dirt during continuous water exchange in closed net cages and the problem of external water body diseases polluting the internal waters of net cages when water exchange stops, provide a water exchange sewage collection device and system for closed net cages for aquaculture, which are installed in the net The bottom of the tank is used to filter the excess water through the screen during water exchange and then discharge it. The dirt blocked by the filter is lifted to the water surface for treatment through the dirt delivery pipe.

Technical solutions

In order to achieve the above-mentioned technical purpose, the present invention designs a kind of closed cage dirt filtering and collecting device, is characterized in that: it comprises dirt collection container, and dirt collection container is contained in the bottom of closed net cage, and the bottom of closed net cage is provided with rectangular metal The frame, the bottom of the net cage and the metal frame are consolidated by ropes. The metal frame is equipped with a first gas-liquid mixing device and a second gas-liquid mixing device. The first gas-liquid mixing device is connected with a dirt delivery pipe, and the second gas-liquid mixing device is The mixing device is connected with a liquid lifting pipe, the dirt delivery pipe is connected to the dirt collection container, and the first gas-liquid mixing device and the second gas-liquid mixing device are equipped with compressed air pipes;

The lower section of the dirt collection container is a bucket-shaped collection bucket, and the upper section is a cylindrical filter part. A filter device is provided on the outer circumference of the cylindrical filter part. A fixed ring protruding outward is provided on the upper edge of the filter device. The edge and the fixed ring are tightly hugged;

The filter device provided on the outer circumference of the cylindrical filter part is a sieve plate, and the cylindrical filter part and the sieve plate form an annular channel, which is connected to the drain pipe, and a rotating flip cover is installed on the drain pipe mouth, and the joint between the rotating flip cover and the end surface of the drain pipe With gasket.

Further, the fastener is a circular hoop or a flange ring.

Further, the position of the mouth of the drainage pipe is not higher than the height of the bottom of the annular channel.

Further, a compressed air reverse punch is installed on the symmetrical side of the annular channel with the drain pipe, and the compressed air reverse punch is connected to the air source valve.

Further, the diameter of the drain pipe is 100-250mm, and the end face of the drain pipe mouth is inclined at 2°-5°.

Further, the aperture of the sieve plate is 0.5-1 mm, the circumferential curved surface of the sieve plate is in the shape of a frustum, and the generatrix of the sieve plate is inclined at 0°-2°.

Further, the installation rotating flip cover can rotate 45°-50° around the connection point.

Beneficial effect

By adopting the structure of the invention, excess water after water exchange can be discharged after being filtered, which is convenient for improving the efficiency of dirt collection and realizing a continuous water exchange process. The clamshell mechanism realizes the one-way discharge of the filtered water body, and isolates the external water body disease from flowing back into the cage. The sewage delivery pipe is drawn out from the inside of the container at the bottom of the cage. The biggest advantage is that the dirt delivery pipe is no longer retained inside the closed cage Solve the difficult problem of fishing in the net cage. The bottom edge of the closed net cage and the upper edge of the container are connected by a hoop, which is fast and firm. The compressed air is used as the air source, and the water exchange and dirt collection are carried out by means of air lifting and liquid lifting, which is suitable for low lift and large flow conditions. , simplifies the complexity of the device, and reduces the broken and blocked channels of dirt particles.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention.

Accompanying drawing 2 is the structural representation of dirt collecting container among the present invention.

Detailed ways

As shown in accompanying drawing 1, a kind of closed net cage dirt filtration collection device, it comprises dirt collection container 1, and dirt collection container 1 is contained in the bottom of closed net cage 2, and the bottom of closed net cage 2 is provided with rectangular metal frame 3 , the bottom of the cage 2 and the metal frame 3 are consolidated by ropes, the metal frame 3 is equipped with a first gas-liquid mixing device 4 and a second gas-liquid mixing device 5, and the first gas-liquid mixing device 4 is connected with a dirt delivery pipe 6. The second gas-liquid mixing device 5 is connected with a liquid lifting pipe 7, and the dirt delivery pipe 6 is connected to the dirt collection container 1. The first gas-liquid mixing device 4 and the second gas-liquid mixing device 5 are equipped with compressed air tube 8;

As shown in accompanying drawing 2, described dirt collection container 1 lower section is bucket-shaped collecting bucket 101, and upper section is cylindrical filtering part 102, and cylindrical filtering part 102 outer circumference is provided with filtering device 103, and filtering device 103 is provided with along The protruding fixed ring 104, the fastener 105 tightly hugs the bottom edge of the net cage 2 and the fixed ring 104;

The filtering device 103 provided on the outer circumference of the cylindrical filter part 102 is a sieve plate, and the cylindrical filter part 102 and the sieve plate form an annular passage 105a, and the annular passage 105a communicates with the drainpipe 106, and a rotating cover 107 is installed on the drainpipe 106 mouth. A sealing gasket is provided at the joint between the rotary flip cover 107 and the end surface of the drain pipe 106 .

Preferably, the fastener 105 is a circular hoop or a flange ring.

Preferably, the mouth of the drainage pipe 106 is not higher than the height of the bottom of the annular passage 105a.

Preferably, a compressed air reverse punch 106a is installed on the symmetrical side of the annular passage 105a with the drain pipe 106, and the compressed air reverse punch 106a is connected to the air source valve.

Preferably, the diameter of the drain pipe 106 is 100-250mm, and the end face of the drain pipe 106 is inclined at 2°-5°.

Preferably, the aperture of the sieve plate is 0.5-1 mm, the circumferential curved surface of the sieve plate is in the shape of a frustum, and the generatrix of the sieve plate is inclined at 0°-2°.

Preferably, the installation rotatable flip cover 107 can rotate 45°-50° around the connection point.

When the device is installed, the circular base at the bottom of the closed net cage 2 is sleeved on the fixed ring 104 on the upper edge of the dirt collection container 1, and then the fastener 105 connects the bottom edge of the closed net cage 2 to the upper edge of the dirt collection container 1. The fixed ring 104 is fixed, and the dirt collection container 1 leads to the sewage conveying pipe 6 on the outside to communicate with the first gas-liquid mixing device 4. After one side of the first gas-liquid mixing device 4 supplies compressed air, the sewage flows from the first gas-liquid mixing device. 4. The upper part of the sewage pipe discharges the water surface to facilitate the collection of dirt. Equally, the liquid lifting pipe 7 communicates with the second gas-liquid mixing device 5, and after the second gas-liquid mixing device 5 side supplies compressed air, the deep water body is discharged into the closed net cage 2 from the second gas-liquid mixing device 5 upper water supply pipeline. , to achieve water exchange. When the water exchange inside and outside the closed net cage is terminated, the flip cover is automatically closed, and germs in the external water body cannot enter the net cage, realizing the isolation of the inside and outside of the net cage.

The advantages of the present invention are: adopting the structural form of the present invention, the redundant water body after water exchange can be discharged after being filtered, which is convenient to improve the efficiency of dirt collection and realize a continuous water exchange process; the flipping mechanism realizes one-way discharge of the filtered water body , to isolate external water body diseases from flowing back into the cage; the sewage conveying pipe is drawn out from the container at the bottom of the cage, and the biggest advantage is that the sewage conveying pipe is no longer retained inside the closed cage, which solves the problem of fishing in the cage; The annular channel 105a is equipped with a compressed air reverse punch 106a on the side symmetrical to the drain pipe 106, which can effectively prevent the screen from being blocked; the bottom edge of the closed net box and the upper edge of the container are connected by a hoop, and the connection is fast and firm ;The system uses compressed air as the air source, and adopts the method of air lift to carry out water exchange and sewage collection. Exchange, sequential dirt collection, simple operation and control.

Claims (7)

1. a closed net cage dirt filtering and collecting device is characterized in that: it comprises a dirt collection container (1), and the dirt collection container (1) is contained in the bottom of a closed net cage (2), and the closed net cage (2) The bottom is provided with a rectangular metal frame (3), the bottom of the cage (2) and the metal frame (3) are consolidated with ropes, and the metal frame (3) is equipped with a first gas-liquid mixing device (4) and a second gas-liquid mixing device device (5), the first gas-liquid mixing device (4) is communicated with a dirt conveying pipe (6), the second gas-liquid mixing device (5) is communicated with a liquid lifting pipe (7), and the dirt conveying pipe (6) ) is connected to the dirt collection container (1), and compressed air pipes (8) are housed on the first gas-liquid mixing device (4) and the second gas-liquid mixing device (5); The lower part of the dirt collection container (1) is a bucket-shaped collection bucket (101), the upper part is a cylindrical filter part (102), and the outer circumference of the cylindrical filter part (102) is provided with a filter device (103), and the filter device (103) The upper edge is provided with a fixed ring (104) protruding outwards, and the fastener (105) tightly hugs the net cage (2) bottom edge and the fixed ring (104); The filtering device (103) provided on the outer circumference of the cylindrical filtering part (102) is a sieve plate, and the cylindrical filtering part (102) and the sieve plate form an annular passage (105a), and the annular passage (105a) and the drainpipe (106) Connected, install rotating cover (107) on drainpipe (106) mouth, and rotary flipcover (107) and drainpipe (106) end face junction are provided with gasket. 2. The device for filtering and collecting dirt in a closed net cage according to claim 1, characterized in that: the fastener (105) is a circular hoop or a flange ring. 3. A device for filtering and collecting dirt in a closed net cage according to claim 1, characterized in that: the nozzle position of the drain pipe (106) is not higher than the height of the bottom of the annular channel (105a). 4. A kind of closed net cage dirt filtering collection device as claimed in claim 1, is characterized in that: A compressed air reverse punch (106a) is installed on the symmetrical side of the annular channel (105a) with the drain pipe (106), and the compressed air reverse punch (106a) is connected to the air source valve member. 5. A device for filtering and collecting dirt in closed net cages as claimed in claim 1, characterized in that: the diameter of the drain pipe (106) is 100-250mm, and the end face of the drain pipe (106) is inclined at 2°-5° . 6. A device for filtering and collecting dirt in closed net cages as claimed in claim 1, characterized in that: the aperture of the sieve plate is 0.5-1mm, the circumferential curved surface of the sieve plate is in the shape of a frustum, and the generatrix of the frustum is inclined at 0°-2°. 7. The device for filtering and collecting dirt in a closed net cage according to claim 1, characterized in that: the installation rotating cover (107) can rotate 45°-50° around the connection point.

Images