A wastewater recycling and treatment system for egg-laying chicken farms

Abstract

This invention relates to the field of wastewater treatment equipment, specifically to a wastewater recycling system for egg-laying hen farms. The system includes a mixing drum, a scum tank fitted outside the mixing drum, a drive device positioned above the scum tank, and a scraper mechanism for cleaning scum. In this wastewater recycling system for egg-laying hen farms, during the pressurization process in the pressing section, the reciprocating motion of the moving frame can drive the scraper to rotate regularly along the inner wall of the scum storage ring via a transmission unit. The scum scraping system is driven by a pressurized power source, eliminating the need for additional power input and manual intervention, allowing scum cleaning and flocculation treatment to operate simultaneously.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment, and more specifically, to a wastewater recycling and treatment system for egg-laying chicken farms. Background Technology

[0002] The egg-laying hen farm has achieved the resource utilization of wastewater through a scientific wastewater recycling system. The system first separates the wastewater into solid and liquid components to remove suspended solids. Then, it uses an anaerobic-aerobic biological treatment process to degrade organic matter and recover biogas as an energy source. The treated water can be used for flushing on the farm, irrigating farmland, etc., promoting the sustainable development of the breeding industry.

[0003] Patent application number CN202222936482.4 discloses a purification device for treating wastewater from egg-laying hen farming, including a wastewater treatment tank for solid-liquid separation and a collection bag for collecting solid residue. The top of the wastewater treatment tank is equipped with a discharge pipe connected to the wastewater source. By designing a solid-liquid separation mechanism, multiple spherical activated carbon slabs are installed at the bottom of the wastewater treatment tank to absorb odors, so as to prevent the odors generated by the sewage from being directly dispersed into the air and thus affecting the environment.

[0004] However, existing wastewater treatment equipment in egg-laying chicken farms generally suffers from low flocculation and mixing efficiency and high power consumption. Traditional systems mostly adopt independent drive structures, and the addition of flocculants relies on static spraying or single mechanical stirring. Uneven dispersion of the agent leads to prolonged reaction time and poor agglomeration of suspended solids. At the same time, scum removal requires additional power sources or manual intervention. During equipment operation, the scum scraping mechanism is separated from the flocculation treatment process, which increases the operation and maintenance burden.

[0005] In view of this, we propose a wastewater recycling and treatment system for egg-laying chicken farms. Summary of the Invention

[0006] The purpose of this invention is to provide a wastewater recycling and treatment system for egg-laying hen farms to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A wastewater recycling and treatment system for an egg-laying hen farm includes a mixing drum, a scum tank fitted outside the mixing drum, a drive device installed above the scum tank, and a scum scraping mechanism for cleaning scum.

[0009] The stirring drum includes a drum body, a stirring tube rotating inside the drum body, and several spray valves for spraying flocculant.

[0010] The scum tank includes a tank body, an air flotation section that generates microbubbles to lift suspended matter to the surface, and a scum storage ring fitted on the outside of the tank body.

[0011] The drive device includes a motor, a reciprocating lead screw disposed on the output shaft of the motor, a stamping part disposed below the reciprocating lead screw, and a transmission part for transmitting power.

[0012] The stamping part includes a moving frame that moves left and right as the reciprocating screw rotates, a fixed toothed plate that moves together with the moving frame, and an air cylinder located below the moving frame. When the moving frame moves, it can press gas into the stirring tube through the air cylinder, so that the flocculant can be sprayed out from the spray valve and mixed with the sewage.

[0013] The transmission unit includes an end tooth that rotates after contacting the movable fixed tooth plate, and an external gear that rotates clockwise with the end tooth. When the external gear rotates, it drives the slag scraping mechanism to rotate, thereby cleaning the floating slag in the slag storage ring.

[0014] In the technical solution of the present invention, the top of the outer wall of the cylinder is fitted with an inlet pipe for injecting wastewater from the egg-laying hen farm, and a number of regularly distributed stirring blades are welded to the bottom of the outer wall of the stirring pipe outside the spray valve. The top of the stirring pipe wall is fitted with a pipe wall gear.

[0015] In the technical solution of the present invention, a number of regularly distributed slag troughs are provided at the top of the outer side wall of the tank body, the slag storage ring is welded and fixed to the outer side wall of the tank body, and a number of vertically penetrating slag discharge troughs are provided on the inner bottom surface of the tank body in the interval area of ​​the number of slag troughs, and a slag guide ring with an upwardly inclined inner end is welded to the inner wall of the tank body below the slag troughs.

[0016] In the technical solution of the present invention, the bottom surface of the slag storage ring is fixedly connected to the slag storage cylinder by bolts on the outside of the slag discharge trough, the outer wall of the tank is threadedly connected to the slag storage ring below the liquid outlet pipe, and the bottom of the outer wall of the tank is fixedly connected to the support frame by bolts.

[0017] In the technical solution of the present invention, the air flotation part includes an air flotation cylinder, a dissolved air tube for generating microbubbles, and a connecting rod disposed at the center of the bottom surface inside the air flotation cylinder.

[0018] In the technical solution of the present invention, the air flotation cylinder is fixedly connected to the inner bottom surface of the tank by bolts. The top of the air flotation cylinder is inclined downward. The air flotation cylinder has a placement cavity for placing the dissolved gas pipe. The gas valve at the end of the dissolved gas pipe is placed on the inner bottom surface of the air flotation cylinder. The connecting rod is used to provide a support base for the stirring pipe.

[0019] In the technical solution of the present invention, the driving device further includes a fixed frame that is fixedly connected to the top of the tank by bolts, the motor that is fixedly connected to the top surface of the fixed frame by bolts, the reciprocating screw that is coaxially connected to the output shaft of the motor, and a worm gear that is fixedly connected to the outer side wall of the reciprocating screw by a locking pin.

[0020] In the technical solution of the present invention, the upper and lower ends of the movable frame are respectively integrally formed with a protrusion sleeved on the outside of the reciprocating screw and a protruding plate connected to the piston plate protrusion shaft inside the air cylinder. The outer side of the air outlet pipe at the end of the air cylinder is connected to an outer sleeve sleeved on the top of the stirring tube. The top of the outer sleeve is connected to an inlet pipe for flocculant injection.

[0021] In the technical solution of the present invention, the transmission part further includes an inner ratchet disposed inside the outer gear, a pawl rotatably connected to the inner ring wall of the outer gear and abutting against the inner ratchet, and a transmission shaft connected between the end teeth and the inner ratchet. The end teeth mesh with the fixed tooth plate, and the transmission shaft is rotatably connected inside the fixed frame.

[0022] In the technical solution of the present invention, the slag scraping mechanism includes a fixed ring tooth meshing with an external gear, a reinforcing ring body parallel to the bottom of the fixed ring tooth, and a number of scrapers regularly distributed between the fixed ring tooth and the reinforcing ring body. The scrapers block the space of the slag flow channel and the slag discharge channel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The wastewater recycling and treatment system of this egg-laying hen farm uses a reciprocating screw to drive a moving frame to reciprocate. Gas is pressurized and injected into the mixing tube through an air cylinder, forcing flocculant to be sprayed out at high speed from the spray valve. This not only enhances the instantaneous mixing intensity of the flocculant and the wastewater, but also drives the rotation of the mixing blades when the reciprocating screw rotates, further refining the distribution of the agent. Through the dual action of pressurized injection and mechanical stirring, the suspended solids are rapidly coagulated, shortening the flocculation reaction time.

[0025] 2. In the wastewater recycling and treatment system of this egg-laying chicken farm, during the pressurization process of the stamping section, the reciprocating motion of the moving frame can also drive the scraper to rotate regularly along the inner wall of the slag storage ring through the transmission section. The slag scraping system is driven by the pressurization power source, without the need for additional power source input and manual intervention, so that the slag cleaning and flocculation treatment can be carried out simultaneously. Attached Figure Description

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 This is a cross-sectional schematic diagram of the stirring cylinder in this invention;

[0029] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of part A in the middle;

[0030] Figure 5This is a cross-sectional schematic diagram of the scum tank in this invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of part B in the middle;

[0032] Figure 7 This is a cross-sectional view of the tank body in this invention;

[0033] Figure 8 This is a schematic diagram of the drive device in this invention;

[0034] Figure 9 This is a cross-sectional schematic diagram of the stamping part in this invention;

[0035] Figure 10 This is a structural breakdown diagram of the transmission unit in this invention;

[0036] Figure 11 This is a schematic diagram of the slag scraping mechanism in this invention;

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Stirring drum; 110. Drum body; 120. Stirring tube; 130. Stirring blade; 140. Tube wall gear; 150. Liquid spray valve; 160. Waste inlet pipe;

[0039] 200. Scum tank; 210. Tank body; 211. Scum chute; 220. Air flotation section; 221. Air flotation cylinder; 2210. Placement cavity; 222. Dissolved air pipe; 223. Connecting rod; 230. Scum storage ring; 231. Scum discharge chute; 240. Scum guide ring; 250. Scum storage cylinder; 260. Liquid outlet pipe; 270. Support frame;

[0040] 300. Drive unit; 310. Fixed frame; 320. Motor; 330. Reciprocating lead screw; 340. Worm gear; 350. Stamping part; 351. Moving frame; 352. Fixed gear plate; 353. Air cylinder; 354. Outer cover; 360. Liquid inlet pipe; 370. Transmission part; 371. End gear; 372. External gear; 373. Internal ratchet; 374. Pawl; 375. Drive shaft;

[0041] 400. Slag scraping mechanism; 410. Fixed ring teeth; 420. Reinforcing ring body; 430. Scraper. Detailed Implementation

[0042] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0043] Please see Figures 1-11 As shown, this embodiment provides a technical solution:

[0044] A wastewater recycling and treatment system for an egg-laying hen farm includes a mixing drum 100, a scum tank 200 sleeved on the outside of the mixing drum 100, a drive device 300 disposed above the scum tank 200, and a scum scraping mechanism 400 for cleaning scum.

[0045] In this embodiment, as Figures 2-4 As shown, the stirring drum 100 includes a drum body 110, a stirring tube 120 rotating inside the drum body 110, and several spray valves 150 for spraying flocculant.

[0046] Specifically, the top of the outer wall of the cylinder 110 is fitted with an inlet pipe 160 for injecting wastewater from the egg-laying hen farm, and a number of regularly distributed stirring blades 130 are welded to the bottom of the outer wall of the stirring pipe 120 outside the spray valve 150. The top of the pipe wall of the stirring pipe 120 is fitted with a pipe wall gear 140.

[0047] Furthermore, the cylinder 110 is used to provide a reaction zone for wastewater and flocculant. When the stirring tube 120 rotates, the flocculant and wastewater are fully mixed by the stirring blades 130. The spray valve 150 is used to spray the flocculant into the interior of the cylinder 110.

[0048] In this embodiment, as Figures 5-6 As shown, the scum tank 200 includes a tank body 210, an air flotation unit 220 that generates microbubbles to drive suspended matter to float, and a scum storage ring 230 sleeved on the outside of the tank body 210.

[0049] Specifically, the top of the outer wall of the tank body 210 is provided with several regularly distributed slag troughs 211, the slag storage ring 230 is welded and fixed to the outer wall of the tank body 210, and several vertically connected slag discharge troughs 231 are provided on the inner bottom surface of the tank body 210 in the interval area of ​​the several slag troughs 211. The inner wall of the tank body 210 is welded with a slag guide ring 240 with its inner end inclined upward below the slag troughs 211.

[0050] Furthermore, a slag storage cylinder 250 is bolted to the bottom surface of the slag storage ring 230 and to the outside of the slag discharge trough 231. A liquid outlet pipe 260 for liquid outflow is threaded to the outer wall of the tank body 210 below the slag storage ring 230. A support frame 270 is bolted to the bottom of the outer wall of the tank body 210.

[0051] Furthermore, the tank 210 provides a placement area for the flotation section 220 and stores the wastewater after flocculation reaction. The scum flows from the guide ring 240 to the scum trough 211 and enters the interior of the scum storage ring 230. The scum discharge trough 231 allows the scum to enter the interior of the scum storage cylinder 250. The liquid outlet pipe 260 is used to allow the wastewater below the scum to flow out. The support frame 270 is used to ensure the stability of the overall structure of the scum tank 200.

[0052] In this embodiment, as Figure 7 As shown, the air flotation unit 220 includes an air flotation cylinder 221, a dissolved air tube 222 for generating microbubbles, and a connecting rod 223 disposed at the center of the bottom surface inside the air flotation cylinder 221.

[0053] Specifically, the air flotation cylinder 221 is fixedly connected to the inner bottom surface of the tank body 210 by bolts. The top of the air flotation cylinder 221 is inclined downward. The air flotation cylinder 221 has a placement cavity 2210 for placing the dissolved air pipe 222. The air valve at the end of the dissolved air pipe 222 is placed on the inner bottom surface of the air flotation cylinder 221. The connecting rod 223 is used to provide a support base for the stirring pipe 120.

[0054] Furthermore, the placement cavity 2210 inside the air flotation cylinder 221 is used to provide a placement area for the dissolved air tube 222. The air valve at the end of the dissolved air tube 222 generates microbubbles, which adhere to the suspended matter and drive the suspended matter to float to form scum.

[0055] In this embodiment, as Figures 8-9 As shown, the drive unit 300 includes a motor 320, a reciprocating lead screw 330 disposed on the output shaft of the motor 320, a stamping part 350 disposed below the reciprocating lead screw 330, and a transmission part 370 for transmitting power.

[0056] Specifically, the stamping part 350 includes a movable frame 351 that moves left and right as the reciprocating screw 330 rotates, a fixed toothed plate 352 that moves together with the movable frame 351, and an air cylinder 353 disposed below the movable frame 351. When the movable frame 351 moves, it can press gas into the stirring tube 120 through the air cylinder 353, so that the flocculant is sprayed out from the spray valve 150 and mixed with the sewage.

[0057] Furthermore, the drive device 300 also includes a fixing frame 310 that is fixedly connected to the top of the tank 210 by bolts, a motor 320 that is fixedly connected to the top surface of the fixing frame 310 by bolts, a reciprocating screw 330 that is coaxially connected to the output shaft of the motor 320, and a worm gear 340 that is fixedly connected to the outer side wall of the reciprocating screw 330 by a locking pin.

[0058] Furthermore, the upper and lower ends of the movable frame 351 are integrally formed with a protrusion sleeved on the outside of the reciprocating screw 330 and a protruding plate connected to the piston plate protrusion shaft inside the air cylinder 353. The outer side of the air outlet pipe at the end of the air cylinder 353 is connected to an outer cover 354 sleeved on the top of the stirring tube 120. The top of the outer cover 354 is connected to an inlet pipe 360 ​​for flocculant injection.

[0059] Furthermore, after the motor 320 starts, it drives the reciprocating screw 330 to rotate and at the same time drives the worm gear 340 to rotate. When the worm gear 340 rotates, it comes into contact with the tube wall gear 140 and drives the stirring tube 120 to rotate. At the same time, the moving frame 351 moves back and forth as the reciprocating screw 330 rotates. The moving frame 351 then drives the piston plate in the air cylinder 353 to move, thereby pressurizing the gas into the stirring tube 120. Then, the flocculant injected by the liquid inlet pipe 360 ​​is sprayed into the cylinder 110 through the liquid spray valve 150, and the sewage and flocculant are fully mixed by the stirring blades 130.

[0060] In this embodiment, as Figure 10 As shown, the transmission unit 370 includes an end tooth 371 that rotates after contacting the movable fixed tooth plate 352, and an external gear 372 that rotates clockwise with the end tooth 371. When the external gear 372 rotates, it drives the slag scraping mechanism 400 to rotate, thereby cleaning the floating slag in the slag storage ring 230.

[0061] Specifically, the transmission unit 370 also includes an inner ratchet 373 disposed inside the outer gear 372, a pawl 374 rotatably connected to the inner annular wall of the outer gear 372 and abutting against the inner ratchet 373, and a transmission shaft 375 connected between the end tooth 371 and the inner ratchet 373. The end tooth 371 meshes with the fixed tooth plate 352, and the transmission shaft 375 is rotatably connected to the inside of the fixed frame 310.

[0062] Furthermore, during the process of the moving frame 351 moving to the left, the fixed toothed plate 352 drives the end tooth 371 to rotate clockwise, and the transmission shaft 375 drives the inner ratchet 373 to rotate. After the clockwise rotating inner ratchet 373 comes into contact with the pawl 374, it drives the outer gear 372 to rotate one revolution.

[0063] In this embodiment, as Figure 11As shown, the slag scraping mechanism 400 includes a fixed ring tooth 410 that meshes with the external gear 372, a reinforcing ring body 420 parallel to the bottom of the fixed ring tooth 410, and several scrapers 430 regularly distributed between the fixed ring tooth 410 and the reinforcing ring body 420. The scrapers 430 block the space of the slag flow channel 211 and the slag discharge channel 231.

[0064] Furthermore, the external gear 372, which rotates one revolution, comes into contact with the fixed ring gear 410, thereby causing several scrapers 430 to rotate. This scrapes the scum that has entered the scum storage ring 230 into the scum discharge trough 231, and the operators can then simply clean the scum in the scum storage cylinder 250.

[0065] Finally, it should be noted that the motor 320 involved in this invention is a general standard part or a component known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, the motor 320 is connected to an external power source through wires. The specific connection method should refer to the working principle in this invention. The electrical components are electrically connected in the order of operation. The detailed connection methods are all known technologies in the art.

[0066] When using the wastewater recycling and treatment system for egg-laying hen farms of the present invention, firstly, the wastewater from the egg-laying hen farm is injected into the interior of the cylinder 110 through the inlet pipe 160, and the motor 320 in the drive device 300 is started, which drives the reciprocating screw 330 to rotate while simultaneously driving the worm gear 340 to rotate.

[0067] When the worm gear 340 rotates, it comes into contact with the tube wall gear 140, which drives the stirring tube 120 to rotate. At the same time, the moving frame 351 moves back and forth as the reciprocating screw 330 rotates. The moving frame 351 then drives the piston plate in the air cylinder 353 to move, which pressurizes the gas into the stirring tube 120. The flocculant injected by the liquid inlet pipe 360 ​​is then sprayed into the cylinder 110 through the liquid spraying valve 150, and the sewage and flocculant are fully mixed by the stirring blades 130.

[0068] After the wastewater is mixed, the suspended solids inside it enter the air flotation cylinder 221. At this time, the external air dissolution machine is started, and microbubbles are generated through the air valve at the end of the air dissolution pipe 222. The suspended solids in the wastewater come into contact with the microbubbles, which causes the suspended solids to move upward.

[0069] Subsequently, excess wastewater overflows from the flotation cylinder 221 into the interior of the tank 210. When the liquid level in the tank 210 approaches the guide ring 240, the scum first enters the scum flow channel 211 through the guide ring 240 and then enters the interior of the scum storage ring 230.

[0070] Subsequently, as the moving frame 351 moves to the left, the fixed toothed plate 352 drives the end tooth 371 to rotate clockwise, and the transmission shaft 375 drives the inner ratchet 373 to rotate. After the clockwise rotating inner ratchet 373 comes into contact with the pawl 374, it drives the outer gear 372 to rotate one revolution.

[0071] Next, the external gear 372, which rotates one revolution, comes into contact with the fixed ring gear 410, thereby causing several scrapers 430 to rotate. This scrapes the scum that has entered the scum storage ring 230 into the scum discharge tank 231. The treated wastewater then flows out through the liquid outlet pipe 260 and is sent to the subsequent anaerobic-aerobic treatment system.

[0072] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A wastewater recycling and treatment system for egg-laying hen farms, characterized in that: It includes a mixing drum (100), a scum tank (200) sleeved on the outside of the mixing drum (100), a drive device (300) disposed above the scum tank (200), and a scum scraping mechanism (400) for cleaning scum. The stirring drum (100) includes a drum body (110), a stirring tube (120) rotating inside the drum body (110), and a plurality of spray valves (150) for spraying flocculants. The scum tank (200) includes a tank body (210), an air flotation part (220) that generates microbubbles and drives suspended matter to float, and a scum storage ring (230) sleeved on the outside of the tank body (210). The drive unit (300) includes a motor (320), a reciprocating lead screw (330) disposed on the output shaft of the motor (320), a stamping part (350) disposed below the reciprocating lead screw (330), and a transmission part (370) for transmitting power. The stamping part (350) includes a movable frame (351) that moves left and right as the reciprocating screw (330) rotates, a fixed toothed plate (352) that moves together with the movable frame (351), and an air cylinder (353) located below the movable frame (351). When the movable frame (351) moves, it can press gas into the stirring tube (120) through the air cylinder (353), so that the flocculant can be sprayed out from the spray valve (150) and mixed with the sewage. The transmission unit (370) includes an end tooth (371) that rotates after contacting the movable fixed tooth plate (352) and an external gear (372) that rotates clockwise with the end tooth (371). When the external gear (372) rotates, it drives the slag scraping mechanism (400) to rotate, thereby cleaning the floating slag in the slag storage ring (230). The drive device (300) also includes a fixed frame (310) that is fixedly connected to the top of the tank (210) by bolts, the motor (320) is fixedly connected to the top surface of the fixed frame (310) by bolts, the reciprocating screw (330) is coaxially connected to the output shaft of the motor (320), and a worm gear (340) is fixedly connected to the outer side wall of the reciprocating screw (330) by a locking pin. The upper and lower ends of the movable frame (351) are integrally formed with a protrusion sleeved on the outside of the reciprocating screw (330) and a protruding plate connected to the piston plate protrusion shaft inside the air cylinder (353). The outer side of the air outlet pipe at the end of the air cylinder (353) is connected with an outer cover (354) sleeved on the top of the stirring tube (120). The top of the outer cover (354) is connected with an inlet pipe (360) for flocculant injection. The slag scraping mechanism (400) includes a fixed ring tooth (410) meshing with an external gear (372), a reinforcing ring body (420) parallel to the bottom of the fixed ring tooth (410), and several scrapers (430) regularly distributed between the fixed ring tooth (410) and the reinforcing ring body (420). The scrapers (430) block the space of the slag flow channel (211) and the slag discharge channel (231).

2. The wastewater recycling and treatment system for egg-laying hen farms according to claim 1, characterized in that: The top of the outer wall of the cylinder (110) is fitted with an inlet pipe (160) for injecting wastewater from the egg-laying hen farm. The bottom of the outer wall of the stirring pipe (120) is welded with several regularly distributed stirring blades (130) outside the spray valve (150). The top of the pipe wall of the stirring pipe (120) is fitted with a pipe wall gear (140).

3. The wastewater recycling and treatment system for egg-laying hen farms according to claim 1, characterized in that: The top of the outer wall of the tank (210) is provided with several regularly distributed slag troughs (211). The slag storage ring (230) is welded and fixed to the outer wall of the tank (210), and several vertically connected slag discharge troughs (231) are provided on the inner bottom surface of the tank in the interval area of ​​the several slag troughs (211). The inner wall of the tank (210) is welded with a slag guide ring (240) with its inner end inclined upward below the slag troughs (211).

4. The wastewater recycling and treatment system for egg-laying hen farms according to claim 3, characterized in that: The bottom surface of the slag storage ring (230) is fixedly connected to the slag storage cylinder (250) on the outside of the slag discharge trough (231) by bolts. The outer wall of the tank body (210) is threadedly connected to the slag storage ring (230) below the liquid discharge pipe (260). The bottom of the outer wall of the tank body (210) is fixedly connected to the support frame (270) by bolts.

5. The wastewater recycling and treatment system for egg-laying hen farms according to claim 1, characterized in that: The air flotation unit (220) includes an air flotation cylinder (221), a dissolved air tube (222) for generating microbubbles, and a connecting rod (223) located at the center of the bottom surface inside the air flotation cylinder (221).

6. The wastewater recycling and treatment system for egg-laying hen farms according to claim 5, characterized in that: The air flotation cylinder (221) is fixedly connected to the inner bottom surface of the tank body (210) by bolts. The top of the air flotation cylinder (221) is inclined downward. The air flotation cylinder (221) has a placement cavity (2210) for placing the dissolved air tube (222) inside. The air valve at the end of the dissolved air tube (222) is placed on the inner bottom surface of the air flotation cylinder (221). The connecting rod (223) is used to provide a support base for the stirring tube (120).

7. The wastewater recycling and treatment system for egg-laying hen farms according to claim 6, characterized in that: The transmission unit (370) further includes an inner ratchet (373) disposed inside the outer gear (372), a pawl (374) rotatably connected to the inner ring wall of the outer gear (372) and abutting against the inner ratchet (373), and a transmission shaft (375) connected between the end tooth (371) and the inner ratchet (373). The end tooth (371) meshes with the fixed tooth plate (352), and the transmission shaft (375) is rotatably connected inside the fixed frame (310).

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