A sewage treatment device and method for a pig farm

Abstract

The application discloses a sewage treatment device and method for pig farms, and belongs to the technical field of livestock breeding. The sewage treatment device for pig farms comprises a gas tank fixedly connected to a pigsty, further comprises a folding air bag fixedly arranged in the gas tank, a guide air box fixedly arranged in the gas tank and fixedly connected to the gas tank, wherein a gas guide pipe is fixedly connected to the guide air box, the gas guide pipe is fixedly connected to an air outlet valve of the folding air bag, a medicine discharging part matched with the folding air bag is arranged in the guide air box, an exhaust pipe is fixedly connected to the guide air box and matched with a stirring part; through the extrusion effect of the folding air bag matched with the massage effect of the massage roller, the blood circulation of pigs is promoted, the growth speed of the pigs is improved, the compression and release of the air bag are realized, the air flow is generated to drive the rotation of the impeller, the periodic discharge of the medicine liquid into the stirring box is realized, and thus the efficiency and quality of the sewage treatment are improved.

Description

Technical Field

[0001] This invention relates to the field of livestock breeding technology, and in particular to a wastewater treatment device and method for pig farms. Background Technology

[0002] Wastewater treatment has always been a pressing issue in existing pig farms. Wastewater treatment equipment used in pig farms is a specialized device designed to treat wastewater generated by pig farms. These devices are typically characterized by high efficiency, energy saving, and environmental friendliness, effectively removing pollutants such as organic matter, ammonia nitrogen, and suspended solids from wastewater, thus reducing environmental pollution.

[0003] Currently, the wastewater treatment equipment used in pig farms only separates solids and liquids in the wastewater using a dry-wet separator. The removal effect of harmful substances in the wastewater is not ideal, and it cannot achieve further decomposition and utilization of organic matter in the wastewater. Furthermore, when using fermentation tanks, it is necessary to manually add fermentation liquid to the fermentation tanks regularly, which increases the complexity of operation and labor intensity. In addition, existing equipment often lacks an effective stirring and aeration system when treating wastewater, resulting in low wastewater treatment efficiency and difficulty in meeting discharge standards for the treated water. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the existing technology is not ideal in removing harmful substances from sewage and cannot achieve further decomposition and utilization of organic matter in sewage, and proposes a sewage treatment device and method for pig farms.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wastewater treatment device for a pig farm includes an air box fixedly connected to a pigpen, and a folding airbag fixedly disposed inside the air box. A push plate is fixedly connected to the folding airbag and slidably installed inside the air box. A massage roller is connected to the push plate. An air guide box is fixedly connected to the air box, and an air guide pipe is fixedly connected to the air guide box. An air outlet valve and an air inlet valve are fixedly connected to the folding airbag. The air guide pipe is fixedly connected to the air outlet valve. A medication dispensing section cooperating with the folding airbag is disposed inside the air guide box. A mixing box is disposed next to the pigpen, and a mixing section for mixing wastewater is disposed inside the mixing box. An exhaust pipe is fixedly connected to the air guide box, and the exhaust pipe cooperates with the mixing section.

[0007] Preferably, a mounting base is fixedly connected to the push plate, a roller shaft is rotatably mounted inside the mounting base, the massage roller is fixedly connected to the roller shaft, a first cam is fixedly connected to the mounting base, and second cams are fixedly connected to both sides of the roller shaft, with the first cam and the second cam cooperating.

[0008] To facilitate the repositioning and inflation of the folded airbag, preferably, a slider is fixedly connected to the push plate, a groove is provided inside the air box, the slider is slidably installed inside the groove, a return spring is fixedly connected to the slider, and the free end of the return spring is fixedly connected to the groove.

[0009] In order to use the airflow discharged from the airbag to drive the impeller to rotate and discharge the material, the dispensing part further includes a gas channel opened on the air guide box. One end of the gas channel is fixedly connected to the air guide pipe, and the other end of the gas channel is fixedly connected to the exhaust pipe. An impeller is rotatably installed inside the gas channel. The impeller has several discharge ports in a ring array. A liquid storage tank is fixedly connected to the impeller, and the impeller cooperates with the liquid storage tank.

[0010] To facilitate the delivery of the liquid medicine, a discharge hopper is fixedly connected inside the storage tank, and a tank cover is sealed on the storage tank. The discharge end of the discharge hopper extends through the gas channel, and an adhesive head is fixedly connected to the discharge end of the storage tank. The adhesive head is attached to the impeller. A limit plate is fixedly connected inside the gas channel, and the impeller is rotatably mounted on the limit plate. A receiving hopper is fixedly connected inside the limit plate, and the receiving hopper cooperates with the adhesive head. A drain pipe is fixedly connected to the discharge end of the receiving hopper, and the output end of the drain pipe is fixedly connected to the exhaust pipe.

[0011] To further agitate and ferment the liquid in the fermentation tank, the stirring unit includes at least two stirring rods rotatably installed inside the stirring tank. A drive motor is fixedly connected to each of the stirring rods. A bracket is fixedly connected to the stirring tank, and the drive motor is fixedly connected to the bracket. Pulleys are fixedly connected to both stirring rods, and the two pulleys are connected by a transmission belt.

[0012] To further enhance the fermentation effect, the stirring rod is further provided with a stirring blade fixedly connected to it. The stirring rod not connected to the drive motor has a connecting port, which is fixedly connected to the exhaust pipe. A connecting cavity is provided inside the stirring rod, and a guide cavity is provided on the stirring blade. The connecting cavity and the guide cavity are connected.

[0013] To further achieve preliminary solid-liquid separation within the mixing tank, a stirring rod is fixedly connected to the stirring paddle. A connecting rod is rotatably installed inside the mixing tank, and a filter plate is fixedly connected to the connecting rod. A support plate is fixedly connected to the mixing tank, and the filter plate is fitted onto the support plate. A protrusion is fixedly connected to the filter plate, and the protrusion cooperates with the stirring rod. A sludge discharge trough is provided on the mixing tank, and a sludge collection box is fixedly connected to the sludge discharge trough. The filter plate cooperates with the sludge discharge trough, and a sludge discharge pipe is fixedly connected to the sludge collection box. A solid-liquid separator is fixedly connected to the output end of the sludge discharge pipe. A guide pipe is provided on the mixing tank, and a fermentation tank is fixedly connected to the upper part of the guide pipe.

[0014] To further perform secondary solid-liquid separation of wastewater, a drainage board is fixedly connected to the pigpen. The inner wall of the drainage board is inclined, and a water pump is fixedly connected to the drainage board. The output end of the water pump is fixedly connected to a drainage pipe, and the output end of the drainage pipe is fixedly connected to a mixing tank. The solid-liquid separator is fixedly connected to the fermentation tank, and the discharge port of the fermentation tank extends outside the fermentation tank. A discharge outlet is provided on the fermentation tank.

[0015] A method for treating wastewater from a pig farm further includes the following steps:

[0016] S1. After regularly flushing and washing the pigpen, the sewage flows into the drainage board through the gaps in the pigpen and is then pumped into the mixing tank.

[0017] S2. After the sewage enters the mixing tank, the liquid and solid are initially separated by the filter plate. When the stirring rod is rotated, the stirring rod on it moves the protrusions on the filter plate, so that the sludge and pig manure on the filter plate enter the sewage collection box.

[0018] S3. Solids enter the solid-liquid separator through the sewage pipe. The solid-liquid separator performs secondary solid-liquid separation on the solids through the internal auger. The liquid slides from the surface of the solid-liquid separator into the fermentation tank. The squeezed pig manure falls from the discharge port.

[0019] S4. After rinsing the pigpen, the ground and the pigs are relatively damp. The pigs are massaged by the massage rollers and squeeze the folded airbags inside the air box. The airflow enters the air guide box and drives the impeller to rotate, so that the fermentation liquid and gas enter the mixing box, and the sewage in the mixing box is fermented simultaneously with the medicine.

[0020] Compared with the prior art, the present invention provides a wastewater treatment device and method for pig farms, which has the following beneficial effects:

[0021] 1. The wastewater treatment device of this pig farm, through the squeezing action of the folded airbags and the massage effect of the massage rollers, can not only promote the blood circulation of pigs and improve their growth rate, but also generate airflow through the compression and release of the airbags, thereby driving the impeller to rotate and realize the periodic discharge of the medicine solution into the mixing tank, thus improving the efficiency and quality of wastewater treatment.

[0022] 2. The wastewater treatment device of this pig farm, through the mixing tank equipped with multiple stirring rollers and drive motors, ensures that the solids and liquids in the wastewater can be fully mixed and stirred, thereby accelerating the decomposition process of organic matter in the wastewater and improving the wastewater treatment rate.

[0023] 3. The wastewater treatment device of this pig farm achieves preliminary solid-liquid separation of wastewater through the combined use of filter plates and stirring rods, reducing the difficulty and cost of subsequent treatment. At the same time, the protrusions on the filter plates cooperate with the stirring rods. During the rotation of the stirring rods, the protrusions are moved to make the filter plates tilt and vibrate upwards. Solid impurities above the filter plates can enter the solid-liquid separator more easily through the tilt, improving the separation efficiency and preventing the filter plates from clogging.

[0024] 4. The wastewater treatment device of this pig farm discharges gas and fermentation liquid into the connecting cavity through the exhaust pipe. The connecting cavity is connected to the guide cavity opened on the stirring blade. The gas and fermentation liquid entering the guide cavity are discharged into the wastewater in the mixing tank through the guide cavity. With the rotation of the stirring blade and stirring rod, the stirring and fermentation effect is enhanced. The gas generates an aeration effect in the wastewater, providing the necessary oxygen environment for the aerobic microorganisms in the wastewater and further accelerating the wastewater purification process.

[0025] The parts of this device not described herein are the same as or can be implemented using existing technologies. In this invention, while the pigs are being massaged by the massage rollers, the air bladders are pushed to form an airflow that pours the fermentation liquid and airflow into the mixing tank, producing an aeration effect and working in conjunction with stirring to improve fermentation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment device for a pig farm proposed in this invention.

[0027] Figure 2 This is a schematic diagram of the massage roller structure of a wastewater treatment device for a pig farm proposed in this invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the gas chamber of a wastewater treatment device for a pig farm proposed in this invention;

[0029] Figure 4 This invention proposes a wastewater treatment device for pig farms. Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the air guide box structure of a wastewater treatment device for a pig farm proposed in this invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the air guide box of a wastewater treatment device for a pig farm proposed in this invention;

[0032] Figure 7 This is a cross-sectional schematic diagram of the receiving hopper of a wastewater treatment device for a pig farm proposed in this invention;

[0033] Figure 8 This is a schematic diagram of the internal structure of the mixing tank of a wastewater treatment device for a pig farm proposed in this invention;

[0034] Figure 9 This is a schematic diagram of the cross-sectional structure of the stirring roller of a wastewater treatment device for a pig farm proposed in this invention;

[0035] Figure 10 This is a schematic diagram of the drainage plate structure of a wastewater treatment device for a pig farm proposed in this invention.

[0036] In the diagram: 1. Drainage board; 11. Pigpen; 2. Air box; 21. Exhaust valve; 22. Intake valve; 23. Mounting base; 24. First cam; 25. Roller shaft; 26. Second cam; 27. Massage roller; 28. Push plate; 29. ​​Folding airbag; 210. Slider; 211. Slide groove; 212. Return spring; 213. Air guide pipe; 3. Box cover; 31. Exhaust pipe; 32. Liquid storage tank; 33. Air guide box; 34. Drain pipe; 35. Discharge hopper; 36. Gas channel; 37. Impeller; 38. Discharge port; 39. Adhesive head; 310. Limiting support plate; 311. Feeding hopper; 4. Water pump; 41. Pumping pipe; 42. Drainage pipe; 5. Mixing tank; 51. Sewage pipe; 52. Guide pipe; 53. Sewage collection box; 54. Support; 55. Drive motor; 56. Pulley; 57. Transmission belt; 58. Stirring roller; 59. Stirring rod; 510. Stirring blade; 511. Connecting rod; 512. Filter plate; 513. Support plate; 514. Protrusion; 515. Sewage discharge trough; 516. Connecting port; 517. Connecting cavity; 518. Guide cavity; 6. Fermentation tank; 61. Solid-liquid separator; 62. Discharge port; 63. Outlet. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Example:

[0040] Reference Figures 1-10The system includes an air box 2 fixedly connected to the pigpen 11, and a folding airbag 29 fixedly installed inside the air box 2. A push plate 28 is fixedly connected to the folding airbag 29, and the push plate 28 is slidably installed inside the air box 2. The expansion and contraction of the folding airbag 29 are controlled by an inlet valve 22 and an outlet valve 21. When the push plate 28 is pushed, the folding airbag 29 is compressed and deflated; when the push plate 28 is not pushed, the folding airbag 29 deflates. A massage roller 27 is connected to the push plate 28, which massages the pigs in the pigpen 11 to a certain extent, helping to promote blood circulation and the health of the pigs. When the pigs use the massage roller 27 for massage, it pushes the push plate 28, causing the folding airbag 29 to compress and deflate. A guide box 33 is fixedly connected to the air box 2. When the folding airbag 29 deflates, specific medications or... Biological agents are introduced into the wastewater treatment process to enhance the wastewater purification effect. A duct pipe 213 is fixedly connected to the air guide box 33, and an outlet valve 21 and an inlet valve 22 are fixedly connected to the folded airbag 29. The duct pipe 213 is fixedly connected to the outlet valve 21. A dispensing section that cooperates with the folded airbag 29 is installed inside the air guide box 33. A mixing tank 5, located next to the pigpen 11, is used to receive and treat wastewater discharged from the pigpen 11. The mixing tank 5 is equipped with a mixing section that mixes the wastewater, promoting thorough mixing of pollutants and the treatment agent through mechanical mixing, thus accelerating the wastewater purification process. An exhaust pipe 31 is fixedly connected to the air guide box 33 and cooperates with the mixing section. When the folded airbag 29 deflates, the gas inside enters the duct pipe 213 through the outlet valve 21 and is then directly introduced into the mixing tank 5 through the exhaust pipe 31. This airflow forms bubbles within the mixing tank 5, which are then evenly distributed throughout the wastewater by the stirring action of the mixing unit. As the bubbles rise and burst, they continuously introduce oxygen from the air into the wastewater, providing the necessary oxygen environment for aerobic microorganisms. These microorganisms utilize this oxygen to decompose organic matter in the wastewater, converting it into carbon dioxide, water, and other harmless substances, thus purifying the wastewater. Furthermore, the agitation caused by the bubbles promotes the diffusion and mixing of suspended solids, colloidal substances, and dissolved pollutants in the wastewater, increasing the contact efficiency between the wastewater and microorganisms and further accelerating the purification process.

[0041] Reference Figures 2-4A mounting base 23 is fixedly connected to the push plate 28. A roller shaft 25 is rotatably mounted inside the mounting base 23, allowing the massage roller 27 to rotate freely around the roller shaft 25. The massage roller 27 is fixedly connected to the roller shaft 25 and can roll freely, providing a massage effect for the pigs, which helps with blood circulation and comfort. When the pigs use the massage roller 27 for massage, a first cam 24 is fixedly connected to the mounting base 23, and second cams 26 are fixedly connected to both sides of the roller shaft 25. The first cam 24 and the second cam 26 cooperate with each other, and the second cams 26 are fixedly connected to both sides of the roller shaft 25. As the roller shaft 25 rotates, the second cams 26 interact with the first cam 24, thereby producing... The cam mechanism, which generates a specific motion trajectory, may be used to adjust the movement of the massage roller 27 and generate vibration, thereby enhancing the massage effect on the pig. A slider 210 is fixedly connected to the push plate 28, serving as a guide component for the push plate 28 to slide inside the air box 2. A groove 211 is provided inside the air box 2, and the slider 210 is slidably installed inside the groove 211. A return spring 212 is fixedly connected to the slider 210, and the free end of the return spring 212 is fixedly connected to the groove 211. The function of the return spring 212 is to provide a rebound force to the push plate 28 after the folded air bag 29 is deflated, so that it can quickly return to the initial position, preparing for the next pushing action, and also enhancing the massage effect on the pig.

[0042] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7The dispensing section includes a gas channel 36 located on the air guide box 33. One end of the gas channel 36 is fixedly connected to the air guide pipe 213, and the other end is fixedly connected to the exhaust pipe 31. When the folded airbag 29 releases gas, the gas can enter the gas channel 36 through the air guide pipe 213 and finally be discharged through the exhaust pipe 31. An impeller 37 is rotatably mounted inside the gas channel 36. The impeller 37 has several discharge ports 38 arranged in a ring array. These discharge ports 38 periodically contact the receiving hopper 311 of the gas channel 36 when the impeller 37 rotates, allowing the liquid inside to flow out. A liquid storage tank 32 is fixedly connected to the impeller 37, and the impeller 37 cooperates with the liquid storage tank 32. A discharge hopper 35 is fixedly connected inside the liquid storage tank 32, and a cover 3 is sealed on the liquid storage tank 32. The discharge end of the discharge hopper 35 extends through the gas channel 36, and the discharge end of the liquid storage tank 32... A bonding head 39 is fixedly connected and is fitted onto the impeller 37. When the impeller 37 rotates, the bonding head 39 will elastically and tightly adhere to the surface of the impeller 37, maintaining a sealed state to prevent liquid leakage at unintended locations. A limiting plate 310 is fixedly connected inside the gas channel 36, and the impeller 37 is rotatably mounted on the limiting plate 310. A receiving hopper 311 is fixedly connected inside the limiting plate 310. The receiving hopper 311 cooperates with the bonding head 39. When the bonding head 39 moves above the receiving hopper 311, the liquid in the discharge port 38 will be thrown out and fall into the receiving hopper 311. A drain pipe 34 is fixedly connected to the discharge end of the receiving hopper 311. The output end of the drain pipe 34 is fixedly connected to the exhaust pipe 31. When the liquid is thrown into the receiving hopper 311, it will flow along the drain pipe 34 into the exhaust pipe 31 and be transported to the target location along with the gas.

[0043] When gas enters the gas channel 36 through the gas guide pipe 213, it drives the impeller 37 to rotate. The rotation of the impeller 37 causes the liquid storage tank 32 and the bonding head 39 to move together. At the same time, the discharge port 38 periodically aligns with the receiving hopper 311. At the moment of alignment, the liquid in the liquid storage tank 32 is thrown into the receiving hopper 311 through the discharge hopper 35 and the discharge port 38. The liquid then flows into the exhaust pipe 31 along the drain pipe 34, mixes with the gas, and is transported to the target location.

[0044] Reference Figure 1 , Figure 8 , Figure 9The mixing unit includes at least two stirring rollers 58 rotatably mounted inside a mixing tank 5. A drive motor 55 is fixedly connected to each stirring roller 58. A bracket 54 is fixedly connected to the mixing tank 5, and the drive motor 55 is fixedly connected to the bracket 54. Each stirring roller 58 is fixedly connected to a pulley 56, which is connected via a transmission belt 57 to achieve a transmission effect that allows the two stirring rollers 58 to rotate synchronously and ensures that the two stirring rollers 58 rotate at the same speed, thereby improving mixing efficiency. A stirring agitator is fixedly connected to each stirring roller 58. The mixing blade 510 and the stirring roller 58 (not connected to the drive motor 55) have a connecting port 516, which is fixedly connected to the exhaust pipe 31. A connecting cavity 517 is formed inside the stirring roller 58. The exhaust pipe 31 discharges gas and fermentation liquid into the connecting cavity 517 through the connecting port 516. A guide cavity 518 is formed on the mixing blade 510, and the connecting cavity 517 is connected to the guide cavity 518. Gas and fermentation liquid entering the guide cavity 518 are discharged into the wastewater inside the mixing tank 5 through the guide cavity 518, enhancing the mixing and fermentation effect. As a result, a stirring rod 59 is fixedly connected to the stirring roller 58, a connecting rod 511 is rotatably installed inside the mixing box 5, a filter plate 512 is fixedly connected to the connecting rod 511, a support plate 513 is fixedly connected to the mixing box 5, the filter plate 512 is fitted onto the support plate 513, and a protrusion 514 is fixedly connected to the filter plate 512. The protrusion 514 cooperates with the stirring rod 59 and assists in pushing the filter plate 512 during the stirring process, causing the filter plate 512 to tilt upwards and vibrate the material on the filter plate 512, making the pig manure and sludge on the filter plate 512 more effective. To effectively discharge solid waste and prevent filter plate 512 from clogging, thereby improving filtration efficiency, the mixing tank 5 is provided with a sludge discharge trough 515, and a sludge collection box 53 is fixedly connected to the sludge discharge trough 515. The filter plate 512 cooperates with the sludge discharge trough 515 to collect solid waste falling from the filter plate 512. A sludge discharge pipe 51 is fixedly connected to the sludge collection box 53, and a solid-liquid separator 61 is fixedly connected to the output end of the sludge discharge pipe 51 for further processing of solid waste. A guide pipe 52 is provided on the mixing tank 5, and a fermentation tank 6 is fixedly connected to the guide pipe 52.

[0045] The drive motor 55 drives the two stirring rollers 58 to rotate synchronously through the transmission belt 57. The stirring blades 510 on the stirring rollers 58 stir the material in the tank. During the stirring process, the gas and fermentation liquid passing through the guide cavity 518 are discharged into the sewage in the stirring tank 5, which enhances the stirring and fermentation effect. The stirred material is filtered by the filter plate 512. The solid waste falls into the sewage discharge tank 515 and is collected in the sewage collection box 53. Then it is sent to the solid-liquid separator 61 through the sewage discharge pipe 51 for further processing. The filtered liquid is introduced into the fermentation tank 6 through the guide pipe 52 for subsequent biological treatment or utilization.

[0046] Reference Figure 1 , Figure 10A drainage board 1 is fixedly connected to the pigpen 11 to collect and guide wastewater and sludge generated within the pigpen 11. The inner wall of the drainage board 1 is inclined to facilitate the smooth flow of wastewater and sludge to the lower part of the drainage board 1, preventing accumulation and blockage. A water pump 41 is provided on the drainage board 1, and the water pump 4 is fixedly connected to the water pump 41 to extract wastewater and sludge from the pigpen 11 and transport it to subsequent treatment equipment. A drainage pipe 42 is fixedly connected to the output end of the water pump 4, and the output end of the drainage pipe 42 is fixedly connected to the mixing tank 5 to ensure that wastewater and sludge can smoothly enter the mixing tank. 5. Preliminary treatment is carried out, wherein the solid-liquid separator 61 is fixedly connected to the fermentation tank 6 to separate the solid and liquid in the mixture output from the mixing tank 5. The discharge port 62 provided on the fermentation tank 6 extends outside the fermentation tank 6. The pig manure after dry-wet separation is discharged through the discharge port 62 and processed into fertilizer. The fermentation tank 6 is provided with a discharge port 63. The fermentation tank 6 is used for biological fermentation treatment of the liquid part. Through the action of microorganisms, the organic matter is decomposed into more stable and harmless substances. The discharge port 62 provided on the fermentation tank 6 is used to discharge the treated material after fermentation is completed for subsequent use or disposal.

[0047] A method for treating wastewater from a pig farm further includes the following steps:

[0048] S1. After regularly flushing and washing the pigpen 11, the sewage flows into the drainage board 1 through the gaps in the pigpen 11, and is then poured into the mixing tank 5 by the water pump 4.

[0049] S2. After the sewage enters the mixing tank 5, the liquid and solid are initially separated by the filter plate 512. When the stirring rod 58 rotates and stirs, the stirring rod 59 on it moves the protrusion 514 on the filter plate 512, so that the sludge and pig manure on the filter plate 512 enter the sewage collection box 53.

[0050] S3. Solids enter the solid-liquid separator 61 through the sewage pipe 51. The solid-liquid separator 61 performs secondary solid-liquid separation on the solids through the internal auger. The liquid slides from the surface of the solid-liquid separator 61 into the fermentation tank 6. The squeezed pig manure falls from the discharge port 62.

[0051] S4. After rinsing the pigpen 11, the ground and the pigs are relatively wet. The pigs are massaged by the massage roller 27 and squeezed by the folded airbag 29 inside the air box 2. The airflow enters the air guide box 33, driving the impeller 37 to rotate, so that the fermentation liquid and gas enter the mixing box 5, and the sewage in the mixing box 5 is fermented by gas explosion and medicine liquid simultaneously.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for a pig farm, comprising an air box (2) fixedly connected to a pigpen (11), characterized in that, Also includes; A folding airbag (29) is fixedly installed inside the air box (2). Among them, a push plate (28) is fixedly connected to the folded airbag (29), the push plate (28) is slidably installed inside the air box (2), and a massage roller (27) is connected to the push plate (28). A guide box (33) is fixedly connected to the air box (2). The air guide box (33) is fixedly connected to an air guide pipe (213), the folded airbag (29) is fixedly connected to an air outlet valve (21) and an air inlet valve (22), the air guide pipe (213) is fixedly connected to the air outlet valve (21), and the air guide box (33) is provided with a drug delivery part that cooperates with the folded airbag (29). The mixing tank (5) is located next to the pigpen (11). The mixing tank (5) is equipped with a mixing part, and the air guide box (33) is fixedly connected with an exhaust pipe (31), which is in conjunction with the mixing part; The dispensing unit includes a gas channel (36) formed on the air guide box (33), one end of which is fixedly connected to the air guide pipe (213), and the other end of which is fixedly connected to the exhaust pipe (31). The gas channel (36) is equipped with an impeller (37) that rotates inside. The impeller (37) has several discharge ports (38) arranged in a ring array. A liquid storage tank (32) is fixedly connected to the impeller (37). The impeller (37) and the liquid storage tank (32) cooperate with each other. The liquid storage tank (32) is fixedly connected to a discharge hopper (35), and a tank cover (3) is sealed on the liquid storage tank (32). The discharge end of the discharge hopper (35) passes through the gas channel (36). The discharge end of the liquid storage tank (32) is fixedly connected to a bonding head (39), which is bonded to the impeller (37). A limiting plate (310) is fixedly connected inside the gas channel (36), and the impeller (37) is rotatably mounted on the limiting plate (310). The limiting plate (310) is fixedly connected to a receiving hopper (311), which is in conjunction with the adhesive head (39). The discharge end of the receiving hopper (311) is fixedly connected to a drain pipe (34), and the output end of the drain pipe (34) is fixedly connected to the exhaust pipe (31).

2. The wastewater treatment device for a pig farm according to claim 1, characterized in that, A mounting base (23) is fixedly connected to the push plate (28). A roller shaft (25) is rotatably installed inside the mounting base (23). The massage roller (27) is fixedly connected to the roller shaft (25). A first cam (24) is fixedly connected to the mounting base (23). A second cam (26) is fixedly connected to both sides of the roller shaft (25). The first cam (24) and the second cam (26) cooperate with each other.

3. The wastewater treatment device for a pig farm according to claim 2, characterized in that, A slider (210) is fixedly connected to the push plate (28), and a groove (211) is provided inside the air box (2). The slider (210) is slidably installed inside the groove (211). A return spring (212) is fixedly connected to the slider (210), and the free end of the return spring (212) is fixedly connected to the groove (211).

4. The wastewater treatment device for a pig farm according to claim 1, characterized in that, The stirring unit includes at least two stirring rods (58) rotatably mounted in the stirring box (5). A drive motor (55) is fixedly connected to each of the stirring rods (58). A bracket (54) is fixedly connected to the stirring box (5). The drive motor (55) is fixedly connected to the bracket (54). A pulley (56) is fixedly connected to each of the two stirring rods (58). The two pulleys (56) are connected by a transmission belt (57).

5. A wastewater treatment device for a pig farm according to claim 4, characterized in that, A stirring blade (510) is fixedly connected to the stirring rod (58). A connecting port (516) is opened on the stirring rod (58) that is not connected to the drive motor (55). The connecting port (516) is fixedly connected to the exhaust pipe (31). A connecting cavity (517) is opened inside the stirring rod (58). A guide cavity (518) is opened on the stirring blade (510). The connecting cavity (517) and the guide cavity (518) are connected.

6. The wastewater treatment device for a pig farm according to claim 5, characterized in that, A stirring rod (59) is fixedly connected to the stirring rod (58). A connecting rod (511) is rotatably installed inside the stirring box (5). A filter plate (512) is fixedly connected to the connecting rod (511). A support plate (513) is fixedly connected to the stirring box (5). The filter plate (512) is fitted onto the support plate (513). A protrusion (514) is fixedly connected to the filter plate (512). The protrusion (514) cooperates with the stirring rod (59). The mixing tank (5) is provided with a sludge discharge trough (515), and a sludge receiving box (53) is fixedly connected to the sludge discharge trough (515). The filter plate (512) is matched with the sludge discharge trough (515). A sludge discharge pipe (51) is fixedly connected to the sludge receiving box (53). A solid-liquid separator (61) is fixedly connected to the output end of the sludge discharge pipe (51). A guide pipe (52) is provided on the mixing tank (5), and a fermentation tank (6) is fixedly connected to the guide pipe (52).

7. A wastewater treatment device for a pig farm according to claim 6, characterized in that, A drainage board (1) is fixedly connected to the pigpen (11). The inner wall of the drainage board (1) is inclined. A water pump (41) is opened on the drainage board (1). A water pump (4) is fixedly connected to the water pump (41). A drain pipe (42) is fixedly connected to the output end of the water pump (4). The output end of the drain pipe (42) is fixedly connected to the mixing tank (5). The solid-liquid separator (61) is fixedly connected to the fermentation tank (6), the discharge port (62) provided on the fermentation tank (6) extends outside the fermentation tank (6), and the fermentation tank (6) is provided with a discharge port (63).

8. A method for treating wastewater from a pig farm, comprising the wastewater treatment device for a pig farm as described in any one of claims 1-7, characterized in that, It also includes the following steps: S1. After regularly flushing and washing the pigpen (11), the sewage flows into the drainage board (1) through the gaps in the pigpen (11), and is then poured into the mixing tank (5) by the water pump (4). S2. After the sewage enters the mixing tank (5), the liquid and solid are initially separated by the filter plate (512). When the stirring rod (58) rotates and stirs, the stirring rod (59) set on it moves the protrusion (514) on the filter plate (512), so that the sludge and pig manure on the filter plate (512) enter the sewage collection box (53). S3. Solids enter the solid-liquid separator (61) through the sewage pipe (51). The solid-liquid separator (61) performs secondary solid-liquid separation on the solids through the internal auger. The liquid slides from the surface of the solid-liquid separator (61) into the fermentation tank (6). The squeezed pig manure falls from the discharge port (62). S4. After rinsing the pigpen (11), the ground and the pigs are relatively wet. The pigs are massaged by the massage roller (27) and squeezed by the folded airbag (29) inside the air box (2). The airflow enters the air guide box (33) and drives the impeller (37) to rotate, so that the fermentation liquid and gas enter the mixing box (5) and the sewage in the mixing box (5) are gas-exploded and the medicine is fermented simultaneously.

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