Automatic chicken manure collection and pretreatment device for laying hen breeding

Abstract

The invention relates to the field of chicken manure treatment, in particular to an automatic chicken manure collection and pretreatment device for laying hen breeding. The automatic chicken manure collecting and pretreating device for laying hen breeding comprises a collecting and screening box and a solid-liquid separating and squeezing box. A connecting frame is fixedly installed at the bottom of the collecting and screening box, the solid-liquid separation squeezing box is connected with the collecting and screening box through the connecting frame, and the discharging end of the collecting and screening box corresponds to the feeding end of the solid-liquid separation squeezing box. Wherein the collecting and screening box is internally provided with a scattering and screening assembly, and the scattering and screening assembly is used for beating the chicken manure entering the collecting and screening box so as to separate leachate entrained in the chicken manure. According to the automatic chicken manure collection and pretreatment device for laying hen breeding, an electric push rod of the scattering and screening assembly drives a toothed plate to drive a gear, a rotating shaft and a stirring and scattering plate to synchronously act, chicken manure is evenly beaten, percolate falls off through a filtrate hole and is collected in a centralized mode through a guide plate, percolate residue or accumulation is avoided, and the quality of chicken manure is improved. And a foundation is laid for subsequent resource utilization.

Description

Technical Field

[0001] This invention relates to the field of livestock and poultry manure treatment technology, and in particular to an automatic collection and pretreatment device for chicken manure used in laying hen farming. Background Technology

[0002] With the continuous promotion of large-scale and intensive egg-laying hen farming, the density of chicken house farming is constantly increasing, and the amount of chicken manure discharged is significantly increasing. Egg-laying hens produce a large amount of manure every day during the feeding process. Chicken manure usually has a high water content and contains impurities such as feathers, feed residue, and bedding debris. If it is not cleaned and pre-treated in time, it will not only easily accumulate and ferment in the chicken house, producing harmful gases such as ammonia and hydrogen sulfide, affecting the growth environment of egg-laying hens and egg production rate, but also breed bacteria and mosquitoes, increasing the risk of disease transmission. In severe cases, it may even affect the farm's environmental protection emission standards.

[0003] Currently, egg-laying hen farms primarily treat chicken manure through manual cleaning, manure scraper conveyors, or simple solid-liquid separation equipment. However, existing technologies still have the following shortcomings: First, some devices only have conveying functions and lack effective dispersing and screening structures, resulting in severe manure clumping and affecting subsequent dehydration. Second, existing pressing or solid-liquid separation structures are mostly unidirectional extrusion or simple filter plate filtration, resulting in uneven stress, low dehydration efficiency, and still high moisture content in the treated manure, which is not conducive to subsequent composting or resource utilization. Third, most equipment lacks sufficient automation, is prone to clogging or leakage, requires frequent maintenance, and has poor operational stability.

[0004] Therefore, it is necessary to provide a new automatic collection and pretreatment device for chicken manure in laying hen farming to solve the above-mentioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, an automatic collection and pretreatment device for chicken manure in laying hen farming is provided to solve the above-mentioned problems.

[0006] This invention provides an automatic collection and pretreatment device for chicken manure used in laying hen farming, comprising: a collection and screening box and a solid-liquid separation and pressing box; a connecting frame is fixedly installed at the bottom of the collection and screening box, and the solid-liquid separation and pressing box is connected to the collection and screening box through the connecting frame, with the discharge end of the collection and screening box corresponding to the feed end of the solid-liquid separation and pressing box; wherein, a dispersing and screening component is configured inside the collection and screening box, which is used to beat the chicken manure entering the collection and screening box to separate the leachate entrained in the chicken manure; a solid-liquid separation and pressing component is configured inside the solid-liquid separation and pressing box, which is used to pressurize and dehydrate the chicken manure after it has been treated by the dispersing and screening component.

[0007] Preferably, the dispersing and screening assembly includes a filter cylinder installed inside the collection and screening box, a rotating shaft is provided on the inner side of the filter cylinder, both ends of the rotating shaft are rotatably connected to the inner side wall of the collection and screening box, and a plurality of stirring and dispersing plates are equidistantly connected to the outer side of the rotating shaft.

[0008] Preferably, the filter cartridge has multiple filtrate holes on its outer side, a leachate collection plate is installed at the bottom of the filter cartridge below the filtrate holes, and a conveying pipe is connected to the bottom of the filter cartridge away from the guide plate.

[0009] Preferably, a gear is rotatably connected to the outer side of the collection and screening box. One side of the gear passes through the collection and screening box via a connecting shaft and is connected to the rotating shaft. A guide rod is installed below the displacement gear on the outer side of the collection and screening box. A toothed plate is slidably connected to the outer side of the guide rod. The top of the toothed plate meshes with the outer side of the gear. An electric push rod for driving the toothed plate to reciprocate is installed on the outer side of the collection and screening box.

[0010] Preferably, the solid-liquid separation and pressing assembly includes two bidirectional screws rotatably connected to the inner side of the solid-liquid separation and pressing chamber. The two bidirectional screws are arranged opposite each other. Threaded blocks are threaded to both outer ends of the bidirectional screws. A pressing rod is connected to the same side of each of the two threaded blocks. A pressing plate is connected to the end of each of the two pressing rods away from the threaded blocks. Two synchronous pulleys are rotatably connected to the outer side of the solid-liquid separation and pressing chamber. The same side of each of the two synchronous pulleys passes through the solid-liquid separation and pressing chamber through a connecting rod and is connected to the bidirectional screws respectively. The outer sides of the two synchronous pulleys are connected by a synchronous belt drive. An electric motor for driving one of the bidirectional screws is installed on the side of the solid-liquid separation and pressing chamber away from the synchronous pulleys.

[0011] Preferably, both the top and bottom of the two bidirectional screws are provided with slide bars, both ends of the two slide bars are connected to the inner side wall of the solid-liquid separation pressing box, both outer ends of the two slide bars are slidably connected to sliders, each slider is connected to a support rod on the same side, and the end of each support rod away from the slider is connected to the extrusion plate.

[0012] Preferably, the inner walls on both sides of the solid-liquid separation pressing box are rotatably connected to filtrate discharge plates, and the two filtrate discharge plates are symmetrically arranged. Both filtrate discharge plates are located at the bottom of the pressing plate. Two hydraulic rods are installed at the bottom of the inner walls on both sides of the solid-liquid separation pressing box, and the output end of the hydraulic rod is rotatably connected to the bottom of the filtrate discharge plate on the corresponding side.

[0013] Compared with related technologies, the automatic collection and pretreatment device for chicken manure in laying hen farming provided by the present invention has the following beneficial effects:

[0014] This invention uses an electric pusher in the dispersing and screening component to drive a toothed plate, which in turn drives a gear, a rotating shaft, and a stirring and dispersing plate to move synchronously. This process evenly beats the chicken manure, and the leachate falls through the filtrate holes and is collected by a guide plate, preventing leachate residue or accumulation and laying the foundation for subsequent resource utilization.

[0015] The solid-liquid separation pressing assembly of this invention adopts bidirectional screw synchronous transmission, which, together with the relative pressure of the two-sided extrusion plates, results in a larger dehydration area and more uniform pressure compared to unidirectional extrusion. This allows for a rapid reduction in the moisture content of chicken manure and an improvement in dehydration efficiency. At the same time, the slide bar, slider, and support rod form a stable guiding structure to prevent the extrusion plates from shifting and ensure consistent dehydration results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of an automatic chicken manure collection and pretreatment device for laying hen farming provided by the present invention;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the dispersing and screening component.

[0018] Figure 3 for Figure 1 A schematic diagram of one of the solid-liquid separation and pressing components shown;

[0019] Figure 4 for Figure 1 The diagram shows the structure of one of the solid-liquid separation and pressing components.

[0020] The following are the labels in the diagram: 1. Collection and screening box; 11. Solid-liquid separation and pressing box; 12. Connecting frame; 2. Filter cylinder; 21. Rotating shaft; 22. Stirring and dispersing plate; 23. Guide plate; 24. Conveying pipe; 25. Gear; 26. Guide rod; 27. Toothed plate; 3. Bidirectional screw; 31. Threaded block; 32. Extrusion rod; 33. Extrusion plate; 34. Synchronous pulley; 35. Slide rod; 36. Sliding block; 37. Support rod; 4. Filtrate discharge plate; 41. Hydraulic rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] This invention provides an automatic collection and pretreatment device for chicken manure used in laying hen farming. The device includes a collection and screening box 1 and a solid-liquid separation and pressing box 11. A connecting frame 12 is fixedly installed at the bottom of the collection and screening box 1. The solid-liquid separation and pressing box 11 is connected to the collection and screening box 1 via the connecting frame 12, and the discharge end of the collection and screening box 1 corresponds to the feed end of the solid-liquid separation and pressing box 11. The collection and screening box 1 is equipped with a dispersing and screening component, which is used to beat the chicken manure entering the collection and screening box 1 to separate the leachate entrained in the manure. The solid-liquid separation and pressing box 11 is equipped with a solid-liquid separation and pressing component, which is used to pressurize and dehydrate the chicken manure treated by the dispersing and screening component.

[0024] It should be noted that: the connecting frame 12 fixedly installed at the bottom of the collection and screening box 1 provides stable support for the solid-liquid separation and pressing box 11, and at the same time ensures that the discharge end of the collection and screening box 1 and the feed end of the solid-liquid separation and pressing box 11 are precisely aligned, ensuring that the cleaned chicken manure is transported into the solid-liquid separation and pressing box 11 in an orderly manner; the dispersing and screening component configured in the collection and screening box 1 separates the leachate entrained in the chicken manure through a beating action, ensuring the purity of the chicken manure in subsequent processing; the solid-liquid separation and pressing component configured in the solid-liquid separation and pressing box 11 performs pressure dehydration treatment on the chicken manure after beating and impurity removal, effectively reducing the moisture content of the chicken manure to avoid rotting and deterioration during storage and transportation, and reducing the moisture content. The system reduces odor emissions and improves the efficiency of chicken manure resource utilization. The filtrate discharge plate 4, which is rotatably connected to the inner walls of both sides of the solid-liquid separation pressing box 11 and symmetrically arranged below the pressing plate 33 of the solid-liquid separation pressing component, can quickly separate the water squeezed out of the chicken manure during the dehydration process. The hydraulic rod 5, which is fixedly installed at the bottom of the inner walls of both sides of the solid-liquid separation pressing box 11, is rotatably connected to the bottom of the filtrate discharge plate 4 through its output end. This drives the filtrate discharge plate 4 to rotate around the rotatable connection point with the inner wall of the solid-liquid separation pressing box 11, thereby realizing the opening and closing control of the filtrate discharge plate 4. This ensures the filtration effect during dehydration and facilitates the discharge of chicken manure after dehydration as well as the cleaning and maintenance of the filtrate discharge plate 4.

[0025] In an embodiment of the present invention, the dispersing and screening assembly includes a filter cylinder 2 installed inside the collection and screening box 1. A rotating shaft 21 is provided on the inner side of the filter cylinder 2. Both ends of the rotating shaft 21 are rotatably connected to the inner sidewall of the collection and screening box 1. Multiple stirring and dispersing plates 22 are equidistantly connected to the outer side of the rotating shaft 21. Multiple filtrate holes are opened on the outer side of the filter cylinder 2. A leachate collection plate 23 is installed below the filtrate holes at the bottom of the filter cylinder 2. A conveying pipe 24 is connected to the side of the bottom of the filter cylinder 2 away from the guide plate 23. A gear 25 is rotatably connected to the outer side of the collection and screening box 1. One side of the gear 25 passes through the collection and screening box 1 through a connecting shaft and is connected to the rotating shaft 21. A guide rod 26 is installed below the displacement gear 25 on the outer side of the collection and screening box 1. A toothed plate 27 is slidably connected to the outer side of the guide rod 26. The top of the toothed plate 27 is meshed with the outer side of the gear 25. An electric push rod for driving the toothed plate 27 to reciprocate is installed on the outer side of the collection and screening box 1.

[0026] It should be noted that the dispersing and screening assembly configured inside the collection and screening box 1 specifically includes a filter cylinder 2 installed inside the collection and screening box 1. The filter cylinder 2 provides space for containing and processing chicken manure. The two ends of the rotating shaft 21 set on its inner side are rotatably connected to the inner side wall of the collection and screening box 1, providing stable support for the beating and conveying actions. Multiple stirring and dispersing plates 22 are equidistantly connected to the outer side of the rotating shaft 21, which can move synchronously with the rotating shaft 21. One side of the gear 25 rotatably connected to the outer side of the collection and screening box 1 passes through the collection and screening box 1 through a connecting shaft and is connected to the rotating shaft 21, which can drive the rotating shaft 21 to rotate synchronously. The guide rod 26 installed on the outer side of the collection and screening box 1 below the gear 25 provides sliding guidance for the toothed plate 27. The top of the toothed plate 27 is meshed with the outer side of the gear 25. In conjunction with the electric push rod installed on the outer side of the collection and screening box 1, the beating and conveying of chicken manure is realized: during the beating stage, the electric push rod drives the toothed plate 27 to move back and forth in a small range. The meshing transmission between the toothed plate 27 and the gear 25 drives the gear 25 to rotate forward and backward, which in turn drives the rotating shaft 21 and the stirring and dispersing plate 22 to perform reciprocating beating action, uniformly beating the chicken manure in the filter cylinder 2, and efficiently separating the leachate entrained in the chicken manure. Multiple filtrate holes on the outside of the filter cylinder 2 allow the separated leachate to fall smoothly. The leachate collection plate 23 installed at the bottom of the filter cylinder 2 below the filtrate holes can guide and collect the fallen leachate, preventing leachate accumulation from affecting the operation of the device. After the beating is completed, the electric push rod drives the toothed plate 27 to move significantly. Through the transmission between the gear 25 and the rotating shaft 21, the stirring and dispersing plate 22 is driven to rotate significantly, pushing the chicken manure in the filter cylinder 2 after beating and impurity removal to the conveying pipe 24 connected to the bottom of the filter cylinder 2 away from the guide plate 23. The conveying pipe 24 accurately guides the collection and screening box 1 to the discharge end, ensuring that the chicken manure is transported to the solid-liquid separation and pressing box 11 in an orderly manner.

[0027] In an embodiment of the present invention, the solid-liquid separation pressing assembly includes two bidirectional screws 3 rotatably connected to the inner side of the solid-liquid separation pressing chamber 11. The two bidirectional screws 3 are arranged opposite to each other. Threaded blocks 31 are threaded to both ends of the outer sides of the bidirectional screws 3. Extrusion rods 32 are connected to the same side of the two threaded blocks 31. Extrusion plates 33 are connected to the ends of the two extrusion rods 32 away from the threaded blocks 31. Two synchronous pulleys 34 are rotatably connected to the outer side of the solid-liquid separation pressing chamber 11. The same side of the two synchronous pulleys 34 is respectively connected to the bidirectional screws 3 via connecting rods passing through the solid-liquid separation pressing chamber 11. The outer sides of the two synchronous pulleys 34 are connected by a synchronous belt drive. A device for driving one of the synchronous pulleys 34 is installed on the side of the solid-liquid separation pressing chamber 11 away from the synchronous pulleys 34. A motor rotates a double-ended screw 3. Slide rods 35 are provided at the top and bottom of both double-ended screws 3. Both ends of the slide rods 35 are connected to the inner wall of the solid-liquid separation pressing box 1. Sliding blocks 36 are slidably connected to both outer ends of the slide rods 35. A support rod 37 is connected to the same side of each sliding block 36. The end of each support rod 37 away from the sliding block 36 is connected to the extrusion plate 33. Filter discharge plates 4 are rotatably connected to the inner walls of both sides of the solid-liquid separation pressing box 11, and the two filter discharge plates 4 are symmetrically arranged. Both filter discharge plates 4 are located at the bottom of the extrusion plate 33. Two hydraulic rods 41 are installed at the bottom of the inner walls of both sides of the solid-liquid separation pressing box 12. The output end of the hydraulic rod 41 is rotatably connected to the bottom of the corresponding filter discharge plate 4.

[0028] It should be noted that the solid-liquid separation pressing assembly configured inside the solid-liquid separation pressing box 11 specifically includes two opposing bidirectional screws 3 rotatably connected to the inner side of the solid-liquid separation pressing box 11. An electric motor installed on the side of the solid-liquid separation pressing box 11 away from the synchronous wheel 34 provides power for the pressing action, driving one of the bidirectional screws 3 to rotate. Through the two synchronous wheels 34 (connected to the bidirectional screws 3 via connecting rods passing through the solid-liquid separation pressing box 11) and the synchronous belt connected to the outer side, the two bidirectional screws 3 rotate synchronously. The threaded blocks 31 threaded to both ends of the outer side of the bidirectional screws 3 move relatively closer or further away as the bidirectional screws 3 rotate, driving the pressing rods 32 connected on the same side to move synchronously. This, in turn, drives the pressing plate 33, which is connected to the end of the two pressing rods 32 away from the threaded blocks 31, to apply pressure to the chicken manure for solid-liquid separation, effectively reducing the moisture content of the chicken manure to prevent rotting and deterioration during storage and transportation, reducing odor emissions, and simultaneously improving the utilization of chicken manure resources. To improve the efficiency of resource utilization, and to ensure the stable movement of the extrusion plate 33, slide rods 35 are provided at the top and bottom of the two bidirectional screws 3. The two ends of the slide rods 35 are connected to the inner wall of the solid-liquid separation pressing box 11. The sliders 36, which are slidably connected at both ends of the slide rods 35, provide auxiliary support and guidance for the extrusion plate 33 through the support rods 37 connected on the same side, so as to avoid the extrusion plate 33 from shifting and affecting the dehydration effect. The filtrate discharge plates 4, which are rotatably connected to the inner walls of both sides of the solid-liquid separation pressing box 11 and symmetrically arranged at the bottom of the extrusion plate 33, can quickly separate the water squeezed out of the chicken manure during the dehydration process. Two hydraulic rods 41 are installed at the bottom of the inner walls of both sides of the solid-liquid separation pressing box 11. Through their output ends, they are rotatably connected to the bottom of the corresponding side filtrate discharge plate 4, driving the filtrate discharge plate 4 to rotate around the rotatable connection point with the inner wall of the solid-liquid separation pressing box 11, so as to realize the opening and closing control of the filtrate discharge plate 4, which not only ensures the filtration effect during dehydration, but also facilitates the discharge of chicken manure after dehydration and the cleaning and maintenance of the filtrate discharge plate 4.

[0029] The working principle of the automatic chicken manure collection and pretreatment device for laying hen farming provided by this invention is as follows: First, the chicken manure to be treated is put into the filter cylinder 2 inside the collection and screening box 1. After the chicken manure is evenly distributed in the filter cylinder 2, it enters the tapping and impurity removal stage. The electric push rod on the outside of the collection and screening box 1 is activated. The electric push rod drives the toothed plate 27 to slide back and forth along the guide rod 26 in a small amplitude. Through the meshing transmission between the toothed plate 27 and the gear 25, the gear 25 is driven to rotate forward and backward, thereby driving the rotating shaft 21 and the outer stirring and dispersing plate 22 to perform reciprocating tapping actions synchronously. The stirring and dispersing plate 22 taps the chicken manure in the filter cylinder 2 evenly, and removes the leachate entrained in the chicken manure. Under the action of the beating force, the chicken manure is separated and falls through the filtrate holes on the outside of the filter cylinder 2 to the leachate collection plate 23 below, where it is guided to the designated collection position. After the beating and impurity removal is completed, the chicken manure is conveyed. The electric push rod is switched to the large-amplitude movement mode, which drives the toothed plate 27 to slide unidirectionally along the guide rod 26. Through the meshing transmission between the toothed plate 27 and the gear 25, the rotating shaft 21 and the stirring and dispersing plate 22 are rotated significantly. The stirring and dispersing plate 22 pushes the chicken manure in the filter cylinder 2 after impurity removal to the conveying pipe 24. The chicken manure is conveyed through the conveying pipe 24 to the discharge end of the collection and screening box 1, and then accurately enters the solid-liquid separation stage. The liquid is removed from the pressing chamber 11 (at this time, the filtrate discharge plate 4 inside the solid-liquid separation pressing chamber 11 is in a closed state under the action of the hydraulic rod 41, forming a support surface); then it enters the pressure dehydration stage, the motor on the outside of the solid-liquid separation pressing chamber 11 is started, the motor drives one of the bidirectional screws 3 to rotate, the bidirectional screw 3 drives the other bidirectional screw 3 to rotate synchronously through the synchronous pulley 34 and the synchronous belt. When the two bidirectional screws 3 rotate, the threaded blocks 31 at both ends of their outer sides move relatively closer along the bidirectional screws 3, driving the extrusion rod 32 and the extrusion plate 33 to move synchronously towards the middle, the extrusion plates 33 on both sides apply uniform pressure to the chicken manure, and the chicken manure is dehydrated. The water in the manure is squeezed out and discharged from the solid-liquid separation press box 11 through the filter holes of the filtrate discharge plate 4. During the dehydration process, the slide bar 35, the slider 36, and the support rod 37 provide stable guidance for the extrusion plate 33 to prevent the extrusion plate 33 from deviating. Finally, in the discharge stage, after the dehydration is completed, the motor drives the bidirectional screw 3 to reverse, which drives the extrusion plate 33 to reset. Then, the hydraulic rod 41 is activated. The output end of the hydraulic rod 41 extends and retracts, driving the filtrate discharge plate 4 to flip and open around its rotating connection with the inner wall of the solid-liquid separation press box 11. The dehydrated chicken manure slides down the inclined surface of the filtrate discharge plate 4 to the designated collection position, completing the entire chicken manure treatment process.

[0030] Furthermore, the automatic collection of chicken manure can be achieved using existing technologies such as elevators. Specifically, an inlet can be installed at the end of the manure scraper belt or collection ditch in the chicken house. A chain bucket elevator or screw elevator can then lift the collected chicken manure from the lower area to the inlet of the collection and screening box of this device, achieving continuous automatic conveying of the chicken manure. The elevator can be selected with a closed structure according to the scale of breeding to reduce odor leakage and secondary pollution during the conveying process. It can also be equipped with a frequency converter to adjust the conveying speed, thereby matching the subsequent dispersing, screening, and pressing dewatering processes, ensuring the continuity and stability of the overall processing flow. By setting up an elevator conveying structure, manual transfer can be avoided, the level of automation can be improved, labor intensity can be reduced, and the time that chicken manure stays on the ground can be reduced, effectively improving the environmental hygiene conditions of the chicken house.

[0031] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic collection and pretreatment device for chicken manure used in laying hen farming, characterized in that, include: Collect screening box (1) and solid-liquid separation pressing box (11); A connecting frame (12) is fixedly installed at the bottom of the collection screening box (1). The solid-liquid separation pressing box (11) is connected to the collection screening box (1) through the connecting frame (12), and the discharge end of the collection screening box (1) is correspondingly set with the feed end of the solid-liquid separation pressing box (11). The collection screening box (1) is equipped with a dispersing screening component, which is used to beat the chicken manure entering the collection screening box (1) to separate the leachate entrained in the chicken manure. The solid-liquid separation pressing box (11) is equipped with a solid-liquid separation pressing component, which is used to pressurize and dehydrate the chicken manure after it has been processed by the dispersing and screening component.

2. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 1, characterized in that, The dispersing and screening assembly includes a filter cylinder (2) installed inside the collection and screening box (1). A rotating shaft (21) is provided on the inner side of the filter cylinder (2). Both ends of the rotating shaft (21) are rotatably connected to the inner wall of the collection and screening box (1). Multiple stirring and dispersing plates (22) are equidistantly connected to the outer side of the rotating shaft (21).

3. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 2, characterized in that, The filter cylinder (2) has multiple filtrate holes on its outer side. A leachate collection plate (23) is installed at the bottom of the filter cylinder (2) below the filtrate holes. A conveying pipe (24) is connected to the bottom of the filter cylinder (2) away from the guide plate (23).

4. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 3, characterized in that, A gear (25) is rotatably connected to the outside of the collection and screening box (1). One side of the gear (25) passes through the collection and screening box (1) through a connecting shaft and is connected to the rotating shaft (21). A guide rod (26) is installed below the displacement gear (25) on the outside of the collection and screening box (1).

5. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 3, characterized in that, A toothed plate (27) is slidably connected to the outside of the guide rod (26). The top of the toothed plate (27) is meshed with the outside of the gear (25). An electric push rod for driving the toothed plate (27) to reciprocate is installed on the outside of the collection and screening box (1).

6. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 1, characterized in that, The solid-liquid separation pressing assembly includes two bidirectional screws (3) rotatably connected to the inside of the solid-liquid separation pressing box (11). The two bidirectional screws (3) are arranged opposite each other. Both ends of the outer side of the bidirectional screws (3) are threaded with threaded blocks (31). Both threaded blocks (31) are connected with extrusion rods (32) on the same side. The ends of the two extrusion rods (32) away from the threaded blocks (31) are connected to an extrusion plate (33). The outer side of the solid-liquid separation pressing box (11) is rotatably connected with two synchronous pulleys (34). The same side of the two synchronous pulleys (34) passes through the solid-liquid separation pressing box (11) through connecting rods and is connected to the bidirectional screws (3). The outer sides of the two synchronous pulleys (34) are connected by synchronous belt drive. An electric motor for driving one of the bidirectional screws (3) is installed on the side of the solid-liquid separation pressing box (11) away from the synchronous pulleys (34).

7. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 5, characterized in that, Both of the two bidirectional screws (3) are provided with slide rods (35) at the top and bottom, and both ends of the two slide rods (35) are connected to the inner wall of the solid-liquid separation pressing box (1).

8. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 5, characterized in that, Both outer ends of the two slide rods (35) are slidably connected to sliders (36), and each slider (36) is connected to a support rod (37) on the same side. The end of each support rod (37) away from the slider (36) is connected to the extrusion plate (33).

9. The automatic collection and pretreatment device for chicken manure in laying hen farming according to claim 6, characterized in that, The solid-liquid separation pressing box (11) has filtrate discharge plates (4) rotatably connected to the inner walls on both sides, and the two filtrate discharge plates (4) are symmetrically arranged. The two filtrate discharge plates (4) are located at the bottom of the pressing plate (33). Two hydraulic rods (41) are installed at the bottom of the inner walls on both sides of the solid-liquid separation pressing box (12). The output end of the hydraulic rod (41) is rotatably connected to the bottom of the filtrate discharge plate (4) on the corresponding side.

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