A farrowing sow house and method

Abstract

The application discloses a kind of farrowing sow house and method, belong to the technical field of live pig reproduction, including the health isolation system in each pig house delivery position, fence separation mechanism is arranged around health isolation system, health isolation system includes first baffle, first baffle is divided into diet area and pollution area, the middle position of pollution area is provided with anti-reverse convex portion, multiple placing ports are equally spaced on the two sides of anti-reverse convex portion, and a health decomposition module is arranged in each placing port, by the application, the flow of excrement is guided, and the pollution is rearranged, to prevent pipe sticking, block odor and bacteria reverse flow, while modular partition design can target processing dry knot bridge manure block, without manual cleaning, avoid sow stress, significantly reduce the risk of breeding disease.

Description

Technical Field

[0001] This invention belongs to the technical field of pig reproduction, and more specifically relates to a farrowing sow house and method. Background Technology

[0002] In large-scale pig farming systems, farrowing sow pens are core specialized facilities designed for sows in late gestation to complete farrowing, recover physiologically after farrowing, and for sows and piglets to be raised together in separate pens during lactation. The farrowing crate, as the core functional unit of the farrowing sow pen, limits the sow's activity range through a gestation crate structure, preventing the sow from injuring newborn piglets when getting up or lying down. It is also equipped with a piglet warming area, a precision feeding and watering system, and a manure collection system, fully adapting to the special physiological needs of sows during farrowing and lactation, as well as the initial care needs of piglets. Among these, the slatted floor structure is the core component of the farrowing crate manure collection system. It is laid entirely on the farrowing crate surface and is a key structural element for achieving physical isolation between pigs and manure, maintaining a clean and dry crate surface, and reducing the risk of disease transmission.

[0003] Existing manure-leaking structures use fixed gaps in the plate array to allow manure to fall into the manure ditch below by its own weight and the pressure from pigs stepping on it, thus completing the basic manure-leaking drainage. However, in actual breeding, dry and compacted clumps of manure tend to bridge the gaps between adjacent gaps in the manure-leaking structure, forming a "bridging" effect. They cannot fall off by their own weight and the pressure from pigs stepping on them. Long-term accumulation of such manure will cause the bedding to become damp and sticky, and the ammonia concentration in the pigsty to exceed the standard, which in turn breeds a large number of pathogens and significantly increases the risk of disease outbreaks in sows and piglets.

[0004] Under the current mainstream farming model, such accumulated manure can only be cleaned and cleared manually by entering the gestation pen area. However, sows in the pre-partum and postpartum recovery periods are extremely sensitive and vulnerable. Touching, driving away, and environmental disturbances during manual cleaning can easily trigger strong stress reactions in sows, thus forming a vicious cycle of "manure accumulation needs to be cleaned - manual cleaning induces stress in sows - stress leads to reproductive disorders, decreased immunity, and increased risk of disease in sows." Ultimately, this results in a significant decrease in piglet survival rates and serious economic losses for farmers. Summary of the Invention

[0005] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. Belonging to the technical field of pig reproduction, this invention primarily offers a farrowing sow pen and method to solve the aforementioned background problem of how to clean manure and waste in the farrowing crate without moving the farrowing sow, thus avoiding stress in the sow.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A farrowing sow pen includes a sanitary isolation system located within each farrowing position. The sanitary isolation system is surrounded by a fence separation mechanism. The sanitary isolation system includes a first partition dividing a feeding area into a waste disposal area. An anti-backfall protrusion is located in the center of the waste disposal area. Multiple placement openings are equidistantly arranged on both sides of the anti-backfall protrusion. Each placement opening contains a sanitary decomposition module. The sanitary decomposition module includes a shell, an inner liner, a negative pressure block, and a base. The upper surface of the shell has multiple circular concave surfaces arranged in a dot matrix pattern. A negative pressure decomposition port is located at the lower end of each circular concave surface. The inner liner has multiple installation openings, each corresponding to a circular concave surface. A wastewater pipe, narrower at the top and wider at the bottom, is installed in each installation opening. The negative pressure block is located on the base, with an inwardly concave slope on its upper side. The negative pressure block has two connecting ports, each covered with a protective component.

[0007] Preferably, the sewage pipe is connected to the lower side of the inner liner block by bolts, and the inner liner block and the shell are connected by bolts. The opening at the lower end of the sewage pipe is connected to a cover plate by a shaft, and a counterweight is embedded in the groove at the edge of the cover plate.

[0008] Preferably, the base is connected to the side wall of the housing by bolts, and the base has a U-shaped structure. A negative pressure interface is provided inside the base, and a crushing shaft is mounted in the middle of the base. An impeller is fitted at one end of the crushing shaft and is located inside the negative pressure interface.

[0009] Preferably, the negative pressure block is provided with a flow guiding channel, and the two upper ends of the flow guiding channel correspond to the two connecting ports respectively, and the lower end of the flow guiding channel corresponds to the upper end of the negative pressure interface.

[0010] Preferably, the protective component includes a plurality of linearly arranged bent pieces at equal intervals, and a connector is provided between each pair of adjacent bent pieces. The bent pieces at both ends are connected to side frames by bolts, and the side frames are installed on the concave inclined surface of the negative pressure block.

[0011] Preferably, the bending piece includes a first bending portion, a beveled portion and a second bending portion in sequence, and the second bending portion of one bending piece and the first bending portion of the other bending piece are staggered between two adjacent bending pieces.

[0012] Preferably, a second partition is provided on both sides of the first partition, and the upper surface of the first partition is 2-5 cm higher than the upper surface of the second partition.

[0013] Preferably, the anti-backward protrusion is provided with a water tank, the water tank is connected to a cover by bolts, multiple water outlets are linearly arranged at equal intervals on both sides of the water tank, and a water inlet connector is provided at one end of the water tank.

[0014] Preferably, the fence separation mechanism includes two fence frames, each fence frame is hinged with a side door, each fence frame is equipped with railings, and each railing is linearly arranged with multiple baby-protecting rakes at equal intervals. A front door and a rear door are provided between the two fence frames, and the front door is connected to a feeding trough by bolts.

[0015] A farrowing sow pen and method, comprising the following steps: S1: Open the back door and drive the sow who is about to give birth into the pen frame through the back door. Position the sow at the first partition, with her head facing the feeding trough side of the front door and her hind legs in the sewage area of ​​the first partition. Then close the back door and wait for the sow to give birth. S2: When the sow defecates, the feces fall onto the sanitary decomposition module in the sewage area. Guided by the circular concave surface, it enters the negative pressure decomposition port, then passes through the sewage pipe which is narrow at the top and wide at the bottom. It relies on its own weight to push open the cover plate and finally discharges from the base. After the cover plate is pushed open, it can be automatically deflected and reset by the counterweight block to seal the lower end of the sewage pipe again. S3: When the sow excretes a dry and compacted fecal clump, and the fecal clump spans between two adjacent negative pressure decomposition ports, water flows out of the water outlet and sprays onto the fecal clump to soften it. After the fecal clump softens, it is connected to negative pressure through the negative pressure interface. Under the action of negative pressure, the cover in the sanitary decomposition module opens, and at the same time, two negative pressure suction forces are formed at the two negative pressure interfaces under the fecal clump, which decompose and break up the softened fecal clump and draw it into the sewage pipe. When the fecal particles pass between the lower end of the sewage pipe and the upper side of the negative pressure block, some fecal particles are affected by the airflow and move towards the connecting port. The bending plate at the connecting port blocks the fecal particles and guides the fecal particles to flow downward along the bending plate. S4: During the flow of air in the negative pressure connector, the impeller will be driven to rotate, and the impeller will drive the crushing shaft to rotate synchronously. After the manure passes through the negative pressure block, it will come into contact with the crushing shaft on the base and be further crushed and refined by the crushing shaft. Finally, the manure passes through the base and enters the sewage channel in the farrowing position of the pig house.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention achieves gravity-based sewage discharge of feces by setting a first partition, shell, circular concave surface, negative pressure decomposition port, sewage pipe, cover plate, counterweight, fence frame, front door, rear door, side door, railing, protective rake and feeding trough. The guiding design of the circular concave surface can guide the feces falling into the sewage area to flow into the negative pressure decomposition port, avoid the feces from being spread flat on the plate surface and reduce the risk of feces accumulation. With the gradual sewage pipe that is narrow at the top and wide at the bottom, the gravitational acceleration of the falling feces can be enhanced. At the same time, it greatly reduces the probability of feces sticking to the pipe wall, avoids dirt and blockage inside the pipe, and ensures smooth sewage discharge. The lower end of the sewage pipe is equipped with a cover plate with a counterweight, which can be automatically opened to complete sewage discharge when the feces fall under its own weight. After sewage discharge, the counterweight automatically deflects and resets to seal the opening, completely preventing ammonia, odor and pathogens in the manure ditch below from flowing back to the farrowing bed surface. This effectively maintains the air quality and clean and dry surface of the farrowing pen, and reduces the risk of disease infection for sows and piglets.

[0017] (2) The present invention, through the first partition, water tank, cover, water outlet, water inlet connector, sanitary decomposition module, shell, inner lining block, negative pressure block, base, sewage pipe and protective components, realizes the modular partition sewage discharge design, combined with the dry fecal block targeted treatment mechanism, which solves the industry problem of fecal "bridging" on traditional slatted floor and the vicious cycle of manual cleaning. The core sewage discharge area of ​​the sow is divided into multiple independent sanitary decomposition modules. Each module is equipped with an independent sewage discharge and negative pressure suction unit, which can carry out precise, point-to-point sewage discharge operations for the manure accumulation area without the need to start the entire area, greatly reducing the energy consumption of the equipment. At the same time, the modular structure makes it easy to disassemble and maintain each module independently without affecting the normal use of the farrowing crate as a whole. For hardened, dry manure clumps that bridge two adjacent negative pressure decomposition ports, the manure clumps can first be softened by spraying water from the outlet holes. Then, the softened manure clumps are broken down and simultaneously pumped into the sewage pipe by the two negative pressure suction forces formed simultaneously by the two negative pressure decomposition ports. This solves the problem that hardened manure clumps cannot fall off by their own weight or by pigs stepping on them with traditional slatted floors. The entire process does not require manual entry into the fence frame for close-range cleaning and unblocking, thus avoiding the stress of manual cleaning on sows from the pre-partum period to the postpartum recovery period. It also avoids the vicious cycle of "manure cleaning - sow stress - increased disease risk", effectively ensuring the reproductive performance of sows and the survival rate of piglets.

[0018] (3) The present invention, through the shell, inner lining block, negative pressure block, flow channel, connecting port, base, negative pressure interface, crushing shaft, impeller, sewage pipe, bending plate, connector and side frame, realizes the protective flow guiding structure formed by the bending plate set at the connecting port. Under the premise of not hindering the flow of negative pressure airflow and ensuring the suction negative pressure strength, it effectively blocks the fecal particles that are deviated by the airflow during the negative pressure suction process, and guides the fecal particles to flow downward along the bending plate, so as to avoid the fecal particles entering the connecting port and causing blockage. Simultaneously, by utilizing the kinetic energy of airflow during the negative pressure suction process, the impeller drives the pulverizing shaft to rotate synchronously, which can further crush and refine the passing manure, effectively preventing large particles of manure from clogging the sewage channels of the farrowing area in the pigsty. The refined manure is more suitable for subsequent harmless and resource-based treatment processes such as solid-liquid separation and anaerobic fermentation, significantly reducing the technological difficulty and operating costs of downstream manure treatment.

[0019] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the sanitary isolation system and the fence separation mechanism of the present invention; Figure 3 This is an exploded view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the sanitary isolation system structure of the present invention; Figure 5 This is a schematic diagram of the first partition structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged diagram of area A; Figure 7 This is a schematic diagram of the sanitary decomposition module structure of the present invention; Figure 8 This is an exploded view of the sanitary decomposition module of the present invention; Figure 9 This is a schematic diagram of the inner liner block structure of the present invention; Figure 10 This is a schematic longitudinal cross-sectional view of the inner liner block of the present invention; Figure 11 This is a schematic diagram of the sewage pipe structure of the present invention; Figure 12 This is a schematic diagram showing the connection between the base and the negative pressure block of the present invention; Figure 13 This is a schematic diagram of the internal structure of the base of the present invention; Figure 14 This is a schematic diagram of the bottom structure of the negative pressure block of the present invention; Figure 15 This is a schematic cross-sectional view of the negative pressure fast circuit of the present invention; Figure 16 This is a schematic diagram of the protective component structure of the present invention; Figure 17 This is an exploded view of the protective components of the present invention; Figure 18 This is a schematic diagram of the distribution of the bent sheets in this invention. Figure 19 This is an exploded view of the fence separation mechanism of the present invention; Figure 20 This is a schematic diagram of the force decomposition when the fecal mass of the present invention is connected between two adjacent negative pressure decomposition ports.

[0021] In the diagram: 1. Farrowing position in the pigsty; 2. Hygiene isolation system; 21. First partition; 22. Second partition; 23. Anti-backward protrusion; 231. Water trough; 24. Cover; 232. Water outlet; 233. Water inlet connector; 25. Placement port; 3. Fence separation mechanism; 31. Fence frame; 32. Front door; 33. Rear door; 34. Side door; 35. Railing; 351. Pulley guard rake; 36. Feed trough; 4. Hygiene decomposition module; 41. Shell; 411. Circular concave shape Surface; 412, negative pressure decomposition port; 42, inner lining block; 421, installation port; 43, negative pressure block; 431, flow guide channel; 432, connecting port; 44, base; 441, negative pressure interface; 47, crushing shaft; 471, impeller; 45, sewage pipe; 451, cover plate; 452, counterweight block; 46, protective component; 461, bending plate; 462, connector; 463, side frame; 464, first bending part; 465, inclined part; 466, second bending part. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] For the embodiments, please refer to the appendix. Figure 1-20As shown, a farrowing sow pen includes a sanitary isolation system 2 located within each farrowing position 1. The sanitary isolation system 2 is surrounded by a fence separation mechanism 3. The sanitary isolation system 2 includes a first partition 21, which divides the pen into a feeding area and a waste disposal area. An anti-fallback protrusion 23 is located in the middle of the waste disposal area. Since sows are heavy during the farrowing and labor period and frequently rise and fall, the hind legs are the main weight-bearing and force-generating areas. This anti-fallback protrusion reduces the likelihood of the sow slipping due to falling. Multiple placement openings 25 are equidistantly arranged on both sides of the anti-fallback protrusion 23. Each placement opening 25 contains a sanitary decomposition module 4. The sanitary decomposition module 4 includes... The system includes a housing 41, an inner liner 42, a negative pressure block 43, and a base 44. The upper surface of the housing 41 is provided with multiple circular concave surfaces 411, which are arranged in a dot matrix. Each circular concave surface 411 has a negative pressure decomposition port 412 at its lower end. The inner liner 42 is provided with multiple mounting ports 421, which correspond one-to-one with the circular concave surfaces 411. Each mounting port 421 is provided with a drain pipe 45, which is narrower at the top and wider at the bottom. The negative pressure block 43 is located on the base 44. The upper side of the negative pressure block 43 is a concave slope. The negative pressure block 43 is provided with two connecting ports 432, and each of the two connecting ports 432 is covered with a protective component 46.

[0026] The specific operation is as follows: Open the back door 33 and drive the sow who is about to give birth into the fence frame 31 through the back door 33. Position the sow at the first partition 21 with her head facing the feeding trough 36 of the front door 32 and her hind legs in the sewage area of ​​the first partition 21. Then close the back door 33 and wait for the sow to give birth. When the sow defecates, the feces fall onto the sanitary decomposition module 4 in the sewage area. Guided by the circular concave surface 411, the feces enter the negative pressure decomposition port 412, then pass through the sewage pipe 45 which is narrow at the top and wide at the bottom. The feces are pushed open by their own weight and finally discharged from the base 44. After the cover 451 is pushed open, it can be automatically deflected and reset by the counterweight 452 to seal the lower end of the sewage pipe 45 again. When the sow excretes a hardened, compacted mass of feces, and this mass spans between two adjacent negative pressure decomposition ports 412, water flows out from the outlet 232 and sprays onto the feces mass to soften it. Once softened, the feces mass is connected to negative pressure through the negative pressure interface 441. Under this negative pressure, the cover 451 in the sanitary decomposition module 4 opens, and simultaneously, two negative pressure suction forces are generated at the two negative pressure interfaces 441 under the feces mass, breaking down the softened feces mass and drawing it into the drain pipe 45 (as shown in the attached diagram). Figure 20As shown, when the fecal particles pass between the lower end of the sewage pipe 45 and the upper side of the negative pressure block 43, some of the fecal particles move towards the connecting port 432 due to the airflow. The bending plate 461 at the connecting port 432 blocks the fecal particles and guides them to flow downwards along the bending plate 461. During the flow of the airflow in the negative pressure connector, the impeller 471 will rotate, and the impeller 471 will drive the crushing shaft 47 to rotate synchronously. After passing through the negative pressure block 43, the fecal particles will come into contact with the crushing shaft 47 on the base 44 and be further crushed and refined by the crushing shaft 47. Finally, the fecal particles pass through the base 44 and enter the sewage channel in the farrowing position 1 of the pig house.

[0027] Please refer to the appendix carefully. Figure 8-18 As shown, the sewage pipe 45 is connected to the lower side of the inner liner block 42 by bolts, and the inner liner block 42 and the shell 41 are connected by bolts. The opening at the lower end of the sewage pipe 45 is connected to a cover plate 451 by a shaft. A counterweight block 452 is embedded in the groove at the edge of the cover plate 451. Through the counterweight block 452, the cover plate 451 is deflected and reset, covering the lower end of the sewage pipe 45. The base 44 is connected to the side wall of the shell 41 by bolts, and the base 44 has a U-shaped structure. A negative pressure interface 441 is provided in the base 44. A crushing shaft 47 is mounted in the middle of the base 44. An impeller 471 is sleeved on one end of the crushing shaft 47. The impeller 471 is located in the negative pressure interface 441. The impeller 471 uses the kinetic energy of airflow to drive the crushing shaft 47 to rotate, further crushing and refining the passing manure, effectively preventing large particles of manure from clogging the sewage channel of the farrowing position 1 in the pigsty. The negative pressure block 43 is provided with a flow guide channel 431, and the two upper ends of the flow guide channel 431 correspond to the two connecting ports 432 respectively. The lower end of the flow guide channel 431 corresponds to the upper end of the negative pressure interface 441, providing space for airflow. The protective component 46 includes a plurality of equally spaced linearly arranged bent pieces 461. A connector 462 is provided between each pair of adjacent bent pieces 461. The bent pieces 461 at both ends are bolted to side frames 463, which are mounted on the negative pressure block. On the concave inclined surface of 43, the bending piece 461 sequentially includes a first bending portion 464, an inclined portion 465, and a second bending portion 466. Between two adjacent bending pieces 461, the second bending portion 466 of one bending piece 461 is staggered with the first bending portion 464 of the other bending piece 461. Through the protective component 46, the fecal particles that are deviated by the airflow during the negative pressure suction process are effectively blocked while ensuring the suction negative pressure strength. At the same time, the fecal particles are guided to flow downward along the bending piece 461.

[0028] Please refer to the appendix carefully. Figure 2-6 and attached Figure 19As shown, a second partition 22 is provided on both sides of the first partition 21, and the upper surface of the first partition 21 is 2-5 cm higher than the upper surface of the second partition 22. The high and low steps form a physical boundary, so that when the piglets lie down, their heads are just aligned with the sow's teats. They do not need to lift their heads and stand on tiptoe, and can naturally suckle the teats, making sucking easier and more efficient. Even weak piglets can easily get milk. A water trough 231 is provided in the anti-backward protrusion 23. A cover 24 is connected to the water trough 231 by bolts. Multiple water outlets 232 are linearly arranged at equal intervals on both sides of the water trough 231. A water inlet connector 233 is provided at one end of the water trough 231. Through the water trough 231, the water outlets 232 and the water inlet connector 233, water is introduced to the upper side of the shell 41, which helps to soften the fecal clumps. The fence separation mechanism 3 includes two fence frames 31, each fence frame 31 is hinged with a side door 34, each fence frame 31 is equipped with a railing 35, and each railing 35 is linearly arranged with multiple piglet protection rakes 351 at equal intervals. A front door 32 and a rear door 33 are provided between the two fence frames 31. The front door 32 is bolted to a feeding trough 36. Through the piglet protection rakes 351, a safe space is provided for piglets to avoid being crushed or injured.

[0029] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A farrowing sow house, comprising a sanitary isolation system (2) located within each farrowing position (1) of the sow house, wherein a fence separation mechanism (3) is provided around the sanitary isolation system (2), characterized in that The sanitary isolation system (2) includes a first partition (21), which is divided into a food area and a sewage area. An anti-backward protrusion (23) is provided in the middle of the sewage area. Multiple placement openings (25) are provided at equal intervals on both sides of the anti-backward protrusion (23). A sanitary decomposition module (4) is provided in each placement opening (25). The sanitary decomposition module (4) includes a shell (41), an inner liner (42), a negative pressure block (43), and a base (44). Multiple circular concave surfaces (411) are provided on the upper surface of the shell (41). Arranged in a dot matrix, each of the circular concave surfaces (411) has a negative pressure decomposition port (412) at its lower end. The inner liner block (42) has multiple mounting ports (421), which correspond one-to-one with the circular concave surfaces (411). Each mounting port (421) has a drain pipe (45) inside it, and the drain pipe (45) is narrower at the top and wider at the bottom. The negative pressure block (43) is located on the base (44). The upper side of the negative pressure block (43) is a concave slope. The negative pressure block (43) has two connecting ports (432), and both connecting ports (432) are covered with protective components (46).

2. The farrowing sow house according to claim 1, characterized in that, The drain pipe (45) is connected to the lower side of the inner liner block (42) by bolts, and the inner liner block (42) and the shell (41) are connected by bolts. The opening at the lower end of the drain pipe (45) is connected to a cover plate (451) by a shaft. A counterweight block (452) is embedded in the groove at the edge of the cover plate (451).

3. The farrowing sow house according to claim 1, characterized in that, The base (44) is connected to the side wall of the housing (41) by bolts, and the base (44) has a U-shaped structure. A negative pressure interface (441) is provided inside the base (44). A crushing shaft (47) is mounted in the middle of the base (44). An impeller (471) is sleeved on one end of the crushing shaft (47), and the impeller (471) is located inside the negative pressure interface (441).

4. A farrowing sow pen according to claim 1, characterized in that, The negative pressure block (43) is provided with a flow channel (431), and the two upper ends of the flow channel (431) correspond to the two connecting ports (432) respectively, and the lower end of the flow channel (431) corresponds to the upper end of the negative pressure interface (441).

5. A farrowing sow pen according to claim 1, characterized in that, The protective component (46) includes a plurality of equally spaced linearly arranged bent pieces (461), and a connector (462) is provided between each two adjacent bent pieces (461). The bent pieces (461) at both ends are connected to side frames (463) by bolts. The side frames (463) are installed on the concave inclined surface of the negative pressure block (43).

6. A farrowing sow pen according to claim 5, characterized in that, The bending piece (461) includes a first bending portion (464), a beveled portion (465) and a second bending portion (466) in sequence, and between two adjacent bending pieces (461), the second bending portion (466) of one bending piece (461) and the first bending portion (464) of the other bending piece (461) are arranged in a staggered manner.

7. A farrowing sow pen according to claim 1, characterized in that, The first partition (21) is provided with a second partition (22) on both sides, and the upper surface of the first partition (21) is 2 cm to 5 cm higher than the upper surface of the second partition (22).

8. A farrowing sow pen according to claim 1, characterized in that, A water tank (231) is provided in the anti-backward protrusion (23). A cover (24) is connected to the water tank (231) by bolts. Multiple water outlet holes (232) are linearly arranged at equal intervals on both sides of the water tank (231). A water inlet connector (233) is provided at one end of the water tank (231).

9. A farrowing sow pen according to claim 8, characterized in that, The fence separation mechanism (3) includes two fence frames (31), each fence frame (31) is hinged with a side door (34), each fence frame (31) is provided with a railing (35), each railing (35) is provided with multiple baby-protecting rakes (351) at equal intervals, and a front door (32) and a rear door (33) are provided between the two fence frames (31), and the front door (32) is connected to a feeding trough (36) by bolts.

10. A farrowing sow pen and method, employing a farrowing sow pen as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Open the back door (33) and drive the sow who is about to give birth into the fence frame (31) through the back door (33), so that the sow is positioned at the first partition (21), with her head facing the feeding trough (36) of the front door (32) and her hind legs in the sewage area of ​​the first partition (21). Then close the back door (33) and wait for the sow to give birth. S2: When the sow defecates, the feces fall onto the sanitary decomposition module (4) in the sewage area. Guided by the circular concave surface (411), it enters the negative pressure decomposition port (412), then passes through the sewage pipe (45) which is narrow at the top and wide at the bottom. It pushes open the cover plate (451) by its own weight and finally discharges from the base (44). After the cover plate (451) is pushed open, it can be automatically deflected and reset by the counterweight (452) to seal the lower end of the sewage pipe (45) again. S3: When the sow excretes a dry and compacted fecal mass, and the fecal mass is connected between two adjacent negative pressure decomposition ports (412), the water outlet (232) discharges water and sprays it onto the fecal mass to soften it. After the fecal mass is softened, it is connected to negative pressure through the negative pressure interface (441). Under the action of negative pressure, the cover plate (451) in the sanitary decomposition module (4) opens. At the same time, two negative pressure suction forces are formed at the two negative pressure interfaces (441) under the fecal mass, which decompose and break the softened fecal mass and pump it into the sewage pipe (45). When the fecal particles pass between the lower end of the sewage pipe (45) and the upper side of the negative pressure block (43), some fecal particles are affected by the airflow and move towards the connecting port (432). The bending plate (461) at the connecting port (432) forms a block on the fecal particles and guides the fecal particles to flow downward along the bending plate (461). S4: During the flow of air in the negative pressure connector, the impeller (471) will rotate, and the impeller (471) will drive the crushing shaft (47) to rotate synchronously. After the feces pass through the negative pressure block (43), they will come into contact with the crushing shaft (47) on the base (44), and be further crushed and refined by the crushing shaft (47). Finally, the feces will pass through the base (44) and enter the sewage channel in the farrowing position (1) of the pig house.

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