Black soldier fly breeding wastewater biological treatment device

Abstract

The utility model relates to wastewater treatment technical field discloses a kind of black water beetle breeding wastewater biological treatment devices, including processing mechanism, processing mechanism includes the tower body fixedly installed on the hanging stand, water inlet pipe is installed in one side of tower body, and the water inlet end of water inlet pipe is fixedly installed with electric control valve, and electric control valve is communicated with outside wastewater source by pipeline, and the water outlet end of water inlet pipe is fixedly installed with water suction pump, and water suction pump is used to suck wastewater and discharge into the cavity of tower body, and the inner chamber of water inlet pipe is fixedly installed with filter screen, and large particle impurities in water inlet pipe are filtered and intercepted by filter screen;Self-cleaning mechanism, self-cleaning mechanism includes brush strip set in the side of filter screen close to electric control valve, when water is entered into water inlet pipe each time, the kinetic energy of water is used to drive brush strip to automatically brush the impurities on the surface of filter screen, without stopping to clean filter screen, avoid affecting wastewater treatment overall efficiency, and do not need extra power source to drive.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a biological treatment device for black soldier fly larvae farming wastewater. Background Technology

[0002] Biological treatment of black soldier fly larvae farming wastewater utilizes the metabolic activity of microbial communities to construct anaerobic, aerobic, or anoxic biological reaction systems, achieving efficient degradation of pollutants in the wastewater. During this process, various functional microorganisms (such as methanogens, nitrifying bacteria, denitrifying bacteria, and heterotrophic bacteria) decompose organic matter, nitrogen, phosphorus, and other nutrients in the wastewater, converting them into harmless carbon dioxide, water, nitrogen, and microbial cells. Simultaneously, combined with process units such as sedimentation tanks, biofilters, or membrane bioreactors, suspended particulate matter and residual pollutants are further removed, ultimately enabling the wastewater to meet discharge standards or achieve resource reuse.

[0003] In actual treatment, wastewater first enters the pre-filtration zone of the device, where larger suspended solids and particulate matter are removed by filter media such as filter screens and grids, undergoing preliminary physical filtration. Then, it enters the aerated biological filter zone, where the biofilm attached to the filter media further degrades the wastewater. As a key component of the pre-filtration system, the filter media needs to be cleaned periodically to prevent clogging that could hinder water flow and reduce treatment efficiency. The cleaning interval gradually shortens as the frequency of water intake increases. This process requires shutdown and filter screen removal, which is cumbersome and affects the overall efficiency of wastewater treatment.

[0004] In view of this, the present invention proposes a biological treatment device for black soldier fly larvae farming wastewater, which solves the above-mentioned technical problems. Utility Model Content

[0005] To solve the technical problems in the existing processing procedures, the present invention provides the following technical solution:

[0006] This utility model provides a biological treatment device for black soldier fly larvae farming wastewater, comprising:

[0007] The treatment mechanism includes a tower body fixedly installed on a lifting frame. A water inlet pipe is installed on one side of the tower body. An electrically controlled valve is fixedly installed at the water inlet end of the water inlet pipe, and the electrically controlled valve is connected to an external wastewater source through a pipeline. A water pump is fixedly installed at the water outlet end of the water inlet pipe. The water pump is used to draw wastewater and discharge it into the inner cavity of the tower body. A filter screen is fixedly installed in the inner cavity of the water inlet pipe.

[0008] The self-cleaning mechanism includes a brush bar disposed on the side of the filter screen near the electronically controlled valve. The self-cleaning mechanism is used to automatically brush away impurities on the surface of the filter screen by using the kinetic energy of the water to drive the brush bar each time water enters the inlet pipe.

[0009] An auxiliary mechanism is used to shake off impurities from the surface of the filter screen each time water stops flowing into the inlet pipe, thus assisting the self-cleaning mechanism in cleaning.

[0010] Furthermore, a rotating cylinder is rotatably connected to the inner side of the filter screen via a bearing, the brush strips are symmetrically installed on the outer wall of the rotating cylinder, a shaft is fixedly installed in the inner cavity of the water inlet pipe via a support frame, one end of the shaft extends into the inner cavity of the rotating cylinder, and a movable disk is slidably connected to the surface of the shaft.

[0011] Furthermore, a C-shaped block is slidably connected to one end of the shaft near the rotating cylinder. A spiral arc groove is formed on the wall of the C-shaped block. A sliding rod is integrally formed on the inner wall of the rotating cylinder, and one end of the sliding rod is slidably connected in the arc groove. A traction rope is connected between the moving disk and the C-shaped block.

[0012] Furthermore, when the water pump is not in operation, the slide bar is located at the rear end of the arc-shaped groove, and the traction rope is in a natural hanging state;

[0013] When the water pump is turned on, the slide bar is located at the front end of the arc-shaped groove, and the traction rope is taut under tension.

[0014] Furthermore, a horizontal groove is provided on the outer wall of the shaft, and a horizontal slider is connected to the inner side of the movable disk, and the horizontal slider is slidably connected in the horizontal groove.

[0015] Furthermore, the inner cavity of the water inlet pipe is symmetrically provided with water passage grooves, and the water passage grooves are located on the side of the movable disc away from the filter screen. An elastic element is connected between the support frame and the movable disc.

[0016] When the movable disk moves between the two water channels, the elastic element is in a compressed state.

[0017] Furthermore, the auxiliary mechanism includes a vertical groove formed on the inner wall of the water inlet pipe, a force-bearing plate slidably connected in the vertical groove, and the force-bearing plate is located at the top of the traction rope. Inclined push blocks are symmetrically connected to the outer wall of the force-bearing plate.

[0018] Furthermore, a number of steel balls are arranged between the filter screen and the moving disc, and the steel balls are evenly distributed on both sides of the shaft. The steel balls are all suspended on the inner wall of the water inlet pipe by a suspension rope.

[0019] Furthermore, a collection mechanism is provided on the side of the filter screen near the electronically controlled valve. The collection mechanism is used to collect impurities brushed off by the brush strip and shaken off by the steel balls. The collection mechanism includes a collection tank that is detachably installed at the bottom of the water inlet pipe. A semi-permeable membrane is provided inside the collection tank. A material collection groove is opened on the wall of the water inlet pipe and is connected to the inner cavity of the collection tank. A sealing block is provided on the top of the material collection groove.

[0020] Furthermore, a first rack is connected to the outer wall of the force-bearing plate, a gear is engaged on one side of the first rack, and the gear is rotatably connected to the inner wall of the water inlet pipe through a rotating shaft. A second rack is engaged on one side of the gear, and the second rack is magnetically connected to the sealing block.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. In this utility model, the water pump generates negative pressure when it draws water, and when the electric control valve is opened, the water pressure can push the moving disc to move towards the water pump side along the axis of the shaft. During this process, the traction rope gradually changes from a natural hanging state to a taut state. After the taut state, as the moving disc continues to move, the moving disc pulls the C-shaped block to move synchronously. Since the arc groove moves horizontally, the slide rod rotates in the arc groove. In this way, the rotating cylinder drives the brush strip to rotate 180 degrees along its axis, automatically cleaning the impurities on the surface of the filter screen.

[0023] 2. In this utility model, when the moving disc returns to its initial position, the traction rope changes from taut to a naturally drooping state, and the inclined push block and the force plate move down. The inclined surface of the inclined push block moves away from the steel ball, and under the action of gravity, the steel ball swings irregularly, moves repeatedly toward the filter screen and hits the filter screen, which helps to shake off or loosen the impurities on the filter screen, making it easier to assist the brush strip in cleaning the impurities on the surface of the filter screen.

[0024] 3. In this utility model, as the force plate moves upward with the taut traction rope, the first rack moves upward synchronously. Under the transmission action of the gear, the second rack moves downward, causing the sealing block to move closer to the receiving trough and block the opening of the receiving trough, reducing or preventing the backflow of water and impurities. Wastewater carrying impurities enters the collection tank and is separated by the semi-permeable membrane, ensuring that impurities are effectively collected and cleaned. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 This is a cross-sectional view of the water inlet pipe according to an embodiment of the present utility model;

[0028] Figure 3 This is a cross-sectional view of the filter and movable disc in an embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view of the rotating cylinder according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the C-shaped block in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the load-bearing plate according to an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the inclined push block in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the first rack in an embodiment of the present invention;

[0034] Figure 9 This is a cross-sectional view of the collection tank according to an embodiment of the present invention.

[0035] In the diagram: 1. Processing mechanism; 11. Tower body; 12. Water inlet pipe; 13. Electrically controlled valve; 14. Water pump; 15. Filter screen; 2. Self-cleaning mechanism; 21. Brush strip; 22. Bearing; 23. Rotating cylinder; 24. Support frame; 25. Shaft; 26. Moving disc; 27. C-shaped block; 28. Arc groove; 29. ​​Slide rod; 210. Traction rope; 211. Horizontal groove; 212. Horizontal slider; 213. Water passage groove; 214. Elastic element; 3. Auxiliary mechanism; 31. Vertical groove; 32. Force plate; 33. Inclined push block; 34. Steel ball; 35. Suspension rope; 4. Collection mechanism; 41. Collection tank; 42. Semi-permeable membrane; 43. Material receiving trough; 44. Sealing block; 45. First rack; 46. Gear; 47. Second rack. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Example 1, referring to Figure 1- Figure 5 This is the first embodiment of the present invention, which provides a biological treatment device for black soldier fly farming wastewater, including a treatment mechanism 1. The treatment mechanism 1 includes a tower body 11 fixedly installed on a hanging frame. A water inlet pipe 12 is installed on one side of the tower body 11. An electric control valve 13 is fixedly installed at the water inlet end of the water inlet pipe 12, and the electric control valve 13 is connected to an external wastewater source through a pipeline. A water pump 14 is fixedly installed at the water outlet end of the water inlet pipe 12. The water pump 14 is used to draw wastewater and discharge it into the inner cavity of the tower body 11. A filter screen 15 is fixedly installed in the inner cavity of the water inlet pipe 12 to filter and intercept large particulate impurities in the water inlet pipe 12.

[0038] The self-cleaning mechanism 2 includes a brush bar 21 disposed on the side of the filter screen 15 near the solenoid valve 13. The self-cleaning mechanism 2 is used to automatically brush the impurities on the surface of the filter screen 15 by using the kinetic energy of the water to drive the brush bar 21 each time water enters the water inlet pipe 12, without having to stop the machine to clean the filter screen 15, thus avoiding affecting the overall efficiency of wastewater treatment, and without requiring an additional power source to drive it.

[0039] Auxiliary mechanism 3 is used to shake off impurities on the surface of filter screen 15 each time water intake stops in the inlet pipe 12, assisting the self-cleaning mechanism 2 in cleaning. Auxiliary mechanism 3 can be a small vibration motor installed on the frame of filter screen 15. When water intake stops in the inlet pipe 12, the vibration motor is started to make filter screen 15 vibrate, thereby shaking off impurities on the surface of filter screen 15. However, a humid environment will accelerate the aging of the insulation material of the vibration motor, reduce the insulation performance, and may lead to leakage or short circuit, which poses certain safety hazards.

[0040] Specifically, the water pump 14 is started, causing the fluid pressure at the inlet of the water pump 14 to drop and generate negative pressure. Then, the solenoid valve 13 is opened, allowing the wastewater to be drawn into the inlet pipe 12. At the same time, the brush strip 21 brushes the surface of the filter screen 15 to prevent the residue of the previous filter from clogging the surface of the filter screen 15. After the batch of wastewater is discharged into the tower body 11, the solenoid valve 13 is closed to stop the water from entering the inlet pipe 12. Then, the water pump 14 is turned off. After the wastewater in the tower body 11 is treated, the next wastewater discharge is started.

[0041] Specifically, when starting up, the water pump 14 opens before the solenoid valve 13. The suction speed of the water pump 14 exceeds the fluid supply speed, which will create a negative pressure at the inlet (i.e., the pressure is lower than atmospheric pressure).

[0042] Reference Figure 3 , Figure 4 and Figure 5A rotating cylinder 23 is rotatably connected to the inner side of the filter screen 15 via a bearing 22. Brush strips 21 are symmetrically installed on the outer wall of the rotating cylinder 23. A shaft 25 is fixedly installed in the inner cavity of the water inlet pipe 12 via a support frame 24. One end of the shaft 25 extends into the inner cavity of the rotating cylinder 23. A movable disk 26 is slidably connected to the surface of the shaft 25. A C-shaped block 27 is slidably connected to the end of the shaft 25 near the rotating cylinder 23. A spiral arc groove 28 is opened on the wall of the C-shaped block 27. A sliding rod 29 is integrally formed on the inner wall of the rotating cylinder 23, and one end of the sliding rod 29 is slidably connected in the arc groove 28. A traction rope 210 is connected between the movable disk 26 and the C-shaped block 27. When the water pump 14 is not turned on, the sliding rod 29 is located at the rear end of the arc groove 28, and the traction rope 210 is in a naturally hanging state. When the water pump 14 is turned on, the sliding rod 29 is located at the front end of the arc groove 28, and the traction rope 210 is in a taut state under tension.

[0043] Specifically, when the water pump 14 draws water, it generates negative pressure. When the solenoid valve 13 is opened, the water pressure can push the moving disc 26 to move along the axis of the shaft 25 towards the side of the water pump 14. During this process, the traction rope 210 gradually changes from a naturally drooping state to a taut state. After the taut state, as the moving disc 26 continues to move, the moving disc 26 pulls the C-shaped block 27 to move synchronously. Since the arc groove 28 moves horizontally, the slide rod 29 rotates in the arc groove 28. In this way, the rotating cylinder 23 drives the brush strip 21 to rotate 180 degrees along its axis, automatically cleaning the impurities on the surface of the filter screen 15.

[0044] Reference Figure 3 A horizontal groove 211 is provided on the outer wall of the shaft 25, and a horizontal slider 212 is connected to the inner side of the movable disk 26, and the horizontal slider 212 is slidably connected in the horizontal groove 211.

[0045] Specifically, under the limiting action of the horizontal groove 211, the moving disc 26 can only move back and forth along the axis of the shaft 25, preventing the traction rope 210 from rotating with the moving disc 26, which would cause the traction rope 210 to get tangled on the outer wall of the shaft 25 and affect the pulling of the moving disc 26 on the C-shaped block 27; when the moving disc 26 moves closer to the rotating cylinder 23 again, the horizontal slider 212 pushes the C-shaped block 27 back into the rotating cylinder 23, causing the C-shaped block 27 to drive the rotating cylinder 23 to rotate in the opposite direction, and the brush strip 21 cleans the surface of the filter screen 15 again.

[0046] Reference Figure 2 and Figure 3 The inner cavity of the water inlet pipe 12 is symmetrically provided with water passage grooves 213, and the water passage grooves 213 are located on the side of the movable disc 26 away from the filter screen 15. An elastic element 214 is connected between the support frame 24 and the movable disc 26. When the movable disc 26 moves between the two water passage grooves 213, the elastic element 214 is in a compressed state.

[0047] Specifically, the elastic element 214 is a compression spring that can withstand axial pressure. When the water pump 14 is not turned on, the moving plate 26 is in its initial position and the elastic element 214 is in a natural state. When the moving plate 26 is moved towards the water pump 14 under negative pressure and water pressure, the elastic element 214 is continuously compressed. The pre-filtered wastewater is pumped into the tower body 11 by the water pump 14 through the water passage 213. When the wastewater intake is completed (when both the electric control valve 13 and the water pump 14 are closed), the moving plate 26 moves back to its initial position under the reset action of the elastic element 214.

[0048] Example 2, refer to Figure 1 - Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the auxiliary mechanism 3 includes a vertical groove 31 opened on the inner wall of the water inlet pipe 12. A force plate 32 is slidably connected in the vertical groove 31, and the force plate 32 is located at the top of the traction rope 210. Inclined push blocks 33 are symmetrically connected on the outer wall of the force plate 32. A number of steel balls 34 are arranged between the filter screen 15 and the moving disk 26, and the steel balls 34 are evenly distributed on both sides of the shaft 25. The steel balls 34 are all suspended on the inner wall of the water inlet pipe 12 by the suspension rope 35.

[0049] Specifically, as the traction rope 210 changes from a naturally drooping state to a taut state, the traction rope 210 pushes the force plate 32 to move upward. The vertical groove 31 provides a vertical sliding path for the force plate 32, so that the inclined push block 33 moves vertically upward in sync with it. The inclined surface of the inclined push block 33 continuously pushes the steel ball 34 to deflect towards one side of the moving disk 26, and the suspension rope 35 changes from vertical to inclined. When the moving disk 26 moves back to the initial position, the traction rope 210 changes from a taut state to a naturally drooping state, and the inclined push block 33 and the force plate 32 move downward. The inclined surface of the inclined push block 33 moves away from the steel ball 34. Under the action of gravity, the steel ball 34 swings irregularly, repeatedly moving towards the filter screen 15 and hitting the filter screen 15, which helps to shake off or loosen the impurities on the filter screen 15, making it easier for the auxiliary brush strip 21 to clean the impurities on the surface of the filter screen 15.

[0050] The remaining structure is the same as that in Example 1.

[0051] Example 3, referring to Figure 1 - Figure 9This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that a collection mechanism 4 is installed on the side of the filter screen 15 near the electric control valve 13. The collection mechanism 4 is used to collect impurities brushed off by the brush strip 21 and shaken off by the steel ball 34. The collection mechanism 4 includes a collection tank 41 that is detachably installed at the bottom of the water inlet pipe 12. A semi-permeable membrane 42 is provided inside the collection tank 41. A connecting pipe (shown in the figure but not labeled) is detachably installed on one side of the bottom of the collection tank 41. The outlet end of the connecting pipe leads to the inner cavity of the tower body 11. A material collection groove 43 is opened on the wall of the water inlet pipe 12 and is connected to the inner cavity of the collection tank 41. A sealing block 44 is provided at the top of the material collection groove 43. A magnetic rod is fixedly installed at the top of the sealing block 44 and a deformable sealing ring is provided at the bottom of the sealing block 44. The sealing ring is adapted to the opening size of the material collection groove 43.

[0052] Specifically, the semipermeable membrane 42 is a thin film that only allows certain molecules or ions to diffuse in and out. Its pore size is selective, generally allowing solvent (such as water) molecules to pass through, while solute (impurity) molecules cannot pass through due to their larger particle size or other chemical or physical limitations.

[0053] Specifically, when water is first introduced into the inlet pipe 12, the brush strip 21 brushes the surface of the filter screen 15, brushing off the remaining impurities from the previous filtration. The impurities are flushed into the collection tank 41 through the collection trough 43. Subsequently, the opening of the collection trough 43 is sealed by the sealing block 44, cutting off the connection between the collection tank 41 and the inlet pipe 12. After the wastewater carrying impurities enters the collection tank 41, water molecules flow into the inner cavity of the tower body 11 through the semi-permeable membrane 42, while the impurities remain on the top of the semi-permeable membrane 42. After a period of time, the collection tank 41 can be removed to clean the collected impurities.

[0054] Reference Figure 6 and Figure 8 A first rack 45 is connected to the outer wall of the force plate 32. A gear 46 is meshed on one side of the first rack 45, and the gear 46 is rotatably connected to the inner wall of the water inlet pipe 12 through a rotating shaft. A second rack 47 is meshed on one side of the gear 46, and the second rack 47 is slidably connected to the inner wall of the water inlet pipe 12. The second rack 47 is magnetically connected to the sealing block 44.

[0055] Specifically, as the force-bearing plate 32 moves upward with the taut traction rope 210, the first rack 45 moves upward synchronously. Under the transmission action of the gear 46, the second rack 47 moves downward, causing the sealing block 44 to move closer to the receiving trough 43 and seal the opening of the receiving trough 43, reducing or preventing the backflow of water and impurities. Wastewater carrying impurities enters the collection tank 41 and is separated by the semi-permeable membrane 42, ensuring that impurities are effectively collected and cleaned. The remaining structure is the same as that of Embodiment 2.

[0056] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A biological treatment device for black soldier fly larvae farming wastewater, characterized in that, include: The treatment mechanism (1) includes a tower body (11) fixedly installed on a lifting frame. A water inlet pipe (12) is installed on one side of the tower body (11). An electric control valve (13) is fixedly installed at the water inlet end of the water inlet pipe (12), and the electric control valve (13) is connected to an external wastewater source through a pipe. A water pump (14) is fixedly installed at the water outlet end of the water inlet pipe (12). The water pump (14) is used to draw wastewater and discharge it into the inner cavity of the tower body (11). A filter screen (15) is fixedly installed in the inner cavity of the water inlet pipe (12). The self-cleaning mechanism (2) includes a brush bar (21) disposed on the side of the filter screen (15) near the electric control valve (13). The self-cleaning mechanism (2) is used to automatically brush the impurities on the surface of the filter screen (15) by using the kinetic energy of the water to drive the brush bar (21) each time water enters the water inlet pipe (12). The auxiliary mechanism (3) is used to shake off the impurities on the surface of the filter screen (15) each time the water inlet pipe (12) stops flowing, and to assist the self-cleaning mechanism (2) in cleaning.

2. The biological treatment device for black soldier fly larvae farming wastewater according to claim 1, characterized in that, The inner side of the filter screen (15) is rotatably connected to the rotating cylinder (23) via the bearing (22). The brush strips (21) are symmetrically installed on the outer wall of the rotating cylinder (23). The inner cavity of the water inlet pipe (12) is fixedly installed with a shaft (25) via a support frame (24). One end of the shaft (25) extends into the inner cavity of the rotating cylinder (23). A movable disk (26) is slidably connected to the surface of the shaft (25).

3. The biological treatment device for black soldier fly larvae farming wastewater according to claim 2, characterized in that, The shaft (25) is slidably connected to a C-shaped block (27) near the end of the rotating cylinder (23). The wall of the C-shaped block (27) is provided with a spiral arc groove (28). The inner wall of the rotating cylinder (23) is integrally formed with a slide rod (29), and one end of the slide rod (29) is slidably connected in the arc groove (28). A traction rope (210) is connected between the moving disk (26) and the C-shaped block (27).

4. The biological treatment device for black soldier fly larvae farming wastewater according to claim 3, characterized in that, When the water pump (14) is not in operation, the slide bar (29) is located at the rear end of the arc groove (28), and the traction rope (210) is in a natural hanging state. When the water pump (14) is turned on, the slide bar (29) is located at the front end of the arc groove (28), and the traction rope (210) is under tension and is taut.

5. The biological treatment device for black soldier fly larvae farming wastewater according to claim 2, characterized in that, A horizontal groove (211) is provided on the outer wall of the shaft (25), and a horizontal slider (212) is connected to the inner side of the movable disk (26), and the horizontal slider (212) is slidably connected in the horizontal groove (211).

6. The biological treatment device for black soldier fly larvae farming wastewater according to claim 2, characterized in that, The inner cavity of the water inlet pipe (12) is symmetrically provided with water passage grooves (213), and the water passage grooves (213) are located on the side of the movable disk (26) away from the filter screen (15). An elastic element (214) is connected between the support frame (24) and the movable disk (26). When the movable disk (26) moves between the two water channels (213), the elastic element (214) is in a compressed state.

7. The biological treatment device for black soldier fly larvae farming wastewater according to claim 3, characterized in that, The auxiliary mechanism (3) includes a vertical groove (31) opened on the inner wall of the water inlet pipe (12), a force plate (32) is slidably connected in the vertical groove (31), and the force plate (32) is located at the top of the traction rope (210). Inclined push blocks (33) are symmetrically connected on the outer wall of the force plate (32).

8. The biological treatment device for black soldier fly larvae farming wastewater according to claim 7, characterized in that, Several steel balls (34) are arranged between the filter screen (15) and the moving disk (26), and the steel balls (34) are evenly distributed on both sides of the shaft (25). The steel balls (34) are all suspended on the inner wall of the water inlet pipe (12) by the suspension rope (35).

9. The biological treatment device for black soldier fly larvae farming wastewater according to claim 8, characterized in that, The filter screen (15) is provided with a collection mechanism (4) on the side near the electric control valve (13). The collection mechanism (4) is used to collect impurities brushed off by the brush strip (21) and shaken off by the steel ball (34). The collection mechanism (4) includes a collection tank (41) that is detachably installed at the bottom of the water inlet pipe (12). A semi-permeable membrane (42) is provided inside the collection tank (41). A material collection groove (43) is provided on the wall of the water inlet pipe (12), and the material collection groove (43) is connected to the inner cavity of the collection tank (41). A sealing block (44) is provided on the top of the material collection groove (43).

10. The biological treatment device for black soldier fly larvae farming wastewater according to claim 9, characterized in that, A first rack (45) is connected to the outer wall of the force plate (32). A gear (46) is meshed on one side of the first rack (45), and the gear (46) is rotatably connected to the inner wall of the water inlet pipe (12) through a rotating shaft. A second rack (47) is meshed on one side of the gear (46), and the second rack (47) is magnetically connected to the sealing block (44).

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