Livestock manure dry-wet separation device and dry-wet separation method

Abstract

The present invention relates to the technical field of manure resource utilization, and specifically discloses a device for separating wet and dry livestock manure, comprising a filter housing, a support rod, a transmission sleeve, a mounting sleeve, and an extrusion unit. The extrusion unit is arranged on the mounting sleeve, and the extrusion unit is used to compress the manure solids and squeeze out the liquid in the manure solids. There are at least four groups of extrusion units, and the four groups of extrusion units are arranged in a circular array on the mounting sleeve to squeeze the manure solids multiple times to achieve better solid-liquid separation in the manure. A method for separating wet and dry livestock manure comprises step A: filtration; step B: one extrusion; step C: two extrusions; step D: three extrusions; and step E: four extrusions. The four groups of extrusion units of the present invention can squeeze the manure solids multiple times to better squeeze out the liquid in the manure solids. The extrusion distances of the four groups of extrusion units are from long to short, and the extrusion torques are from small to large, which can better squeeze out the liquid in the solid manure.

Description

Technical Field

[0001] The present invention relates to the technical field of manure resource utilization, and in particular to a dry-wet separation device and a dry-wet separation method for livestock manure. Background Art

[0002] In recent years, livestock manure pollution has become a major agricultural ecological and environmental issue of widespread concern in my country, posing a serious threat to the sustainable development of modern agriculture and the socio-economic system, as well as to the safety of the agricultural ecological environment and the quality and safety of agricultural products. Direct discharge of untreated livestock manure, urine, wastewater, and other wastewater can cause significant pollution to water bodies, soil, and fertile farmland. By vigorously developing technologies to recycle and reuse organic matter, nitrogen, and phosphorus from these wastes, and transforming waste into a valuable resource, livestock manure can be transformed into a valuable resource, significantly reducing its environmental impact.

[0003] In the patent document with the authorization publication number CN113735402B, a vortex-type livestock and poultry manure dry-wet separator is disclosed, which includes a base frame, to which a bottom shell and a top shell are respectively connected. A vibrating screen with a plurality of sieve holes is arranged in the top shell, and the vibrating screen is connected to a vibration motor. A main feed pipe is arranged on the top of the vibrating screen, and a screening solid box and a water collecting funnel are respectively arranged at the bottom of the vibrating screen, wherein the screening solid box is connected to the inlet of the solid-liquid separator, and the water collecting funnel is connected to the screening liquid outlet pipe; the liquid outlet of the solid-liquid separator is connected to the main drain pipe. The dry-wet separator separates the solid and liquid of livestock manure through the top screening plate and the bottom screening plate. Since there is still liquid in the solid manure, the solid manure is processed again by the solid-liquid separation motor. The dry-wet separator uses two steps to separate the solid and liquid of livestock manure. The manure takes time to be transferred between the two steps, resulting in reduced manure processing efficiency. Therefore, a livestock manure dry-wet separation device and a dry-wet separation method are proposed to solve the above problems. Summary of the Invention

[0004] The present invention provides a livestock manure dry-wet separation device and a dry-wet separation method, aiming to solve the technical problem in the related art that the dry-wet separator uses two steps to separate the solid and liquid of livestock manure, and the manure takes time to be transferred between the two steps, resulting in reduced manure treatment efficiency.

[0005] The livestock manure dry-wet separation device and dry-wet separation method of the present invention include:

[0006] A filter housing is provided, the filter housing is tilted, both ends of the filter housing are connected to a support frame, the support frame is connected to a drive seat, the drive seat drives the filter housing to rotate, a collection box is provided below the filter housing, and a discharge port is provided at one end of the filter housing;

[0007] A support rod, the support rod is arranged parallel to the filter housing, and both ends of the support rod respectively pass through the two ends of the filter housing and are respectively connected to two support frames;

[0008] A transmission sleeve, the transmission sleeve being rotatably connected to one of the support frames and connected to the filter housing;

[0009] a mounting sleeve, the mounting sleeve being rotatably mounted on the support rod, the mounting sleeve being connected to a first baffle at one end facing the transmission sleeve, the first baffle being in contact with the inner wall of the filter housing, the first baffle being provided with a notch, a flow channel being formed between the first baffle and the inner wall of the filter housing, the mounting sleeve being connected to a second baffle, the second baffle corresponding to the flow channel;

[0010] The extrusion unit is arranged on the mounting sleeve, and the extrusion unit is used to compress the fecal solids and squeeze out the liquid in the fecal solids. There are at least four groups of extrusion units, and the four groups of extrusion units are arranged in a ring array on the mounting sleeve to squeeze the fecal solids multiple times to achieve better solid-liquid separation in the feces.

[0011] Preferably, the compression unit comprises a sliding plate and a positioning plate, wherein the sliding plate slides on the mounting sleeve, the positioning plate is connected to the mounting sleeve, and the sliding plate moves toward the positioning plate to compress the fecal solids.

[0012] Preferably, two adjacent extrusion units are staggered, and the sliding plates and positioning plates in the two adjacent extrusion units have sliding channels in the initial state. The distances between the sliding plates and positioning plates in the four groups of extrusion units decrease from left to right.

[0013] Preferably, the support rod includes a feed pipe and a solid rod, the feed pipe is located at the feed end of the filter housing and is rotatably connected to the transmission sleeve, a discharge port is provided on the feed pipe, the mounting sleeve is rotatably connected to the solid rod, a threaded sleeve is rotatably connected between the mounting sleeve and the solid rod, a reciprocating threaded groove is provided on the solid rod, the threaded sleeve is threadedly connected to the solid rod, and a slideway is provided on the mounting sleeve.

[0014] Preferably, the number of the threaded sleeves is equal to the number of extrusion units, the reciprocating thread groove is divided into four sections, the pitch of the four sections of the reciprocating thread groove decreases from left to right, the number of the slides is equal to the number of the threaded sleeves, and at least four of the slides are arranged in a circular array and correspond to the sliding plate.

[0015] Preferably, the cross section of the filter housing is square, one of the corners of the sliding plate abuts against the corresponding corner of the filter housing, and the area of ​​the sliding plate surface is one quarter of the cross section area of ​​the filter housing.

[0016] Preferably, the sliding plate has a mounting groove, a brush is fixedly connected in the mounting groove, the brush contacts the inner wall of the filter housing, and a tying head is fixedly connected to the side of the sliding plate facing the positioning plate.

[0017] Preferably, a fixing plate is connected to a side of the positioning plate opposite to the sliding plate, the fixing plate is connected to the mounting sleeve, a leakage hole is provided on the positioning plate, and a piercing hole corresponding to the piercing head is provided on the positioning plate.

[0018] Preferably, a telescopic member is fixedly connected between the positioning plate and the fixing plate.

[0019] A method for separating wet and dry livestock manure, based on the wet and dry livestock manure separation device, comprises the following steps:

[0020] Step A: Filtration: Feces flows into the filter housing through the support rod. As the feces flows through the flow channel to one end of the filter housing, preliminary solid-liquid separation occurs in the feces, and the solids are blocked by the second baffle;

[0021] Step B: One-time extrusion: The filter housing rotates through the drive seat, and the solid on the second baffle rotates into the first extrusion unit. After the filter housing rotates 90 degrees, the solid is compressed for the first time, squeezing out the liquid in the solid feces, and at the same time, the solid feces enters the second extrusion unit;

[0022] Step C: Secondary extrusion: The feces solids in the filter housing continue to rotate. After the filter housing rotates 180 degrees, the solids are compressed for the second time. At the same time, the solid feces enter the third extrusion unit. The second compression process is less than the first compression process.

[0023] Step D: Three squeezes. The feces solids in the filter housing continue to rotate. After the filter housing rotates 270 degrees, the solids are compressed for the third time. At the same time, the solid feces enter the fourth squeeze unit. The third squeeze process is less than the second squeeze process.

[0024] Step E: Four extrusions. The fecal solids in the filter housing continue to rotate. After the filter housing rotates 360 degrees, the solids are compressed for the fourth time. The fourth compression process is less than the third compression process. At this time, the solid feces after extrusion will be discharged through the discharge port, and the unextruded fecal solids will enter the first extrusion unit again, and the cycle will continue.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are:

[0026] 1. The four groups of extrusion units can squeeze the fecal solids multiple times to better squeeze out the liquid in the fecal solids and achieve better solid-liquid separation of the feces. Among them, the extrusion distances of the four groups of extrusion units are from long to short, and the extrusion torque is from small to large, which can better squeeze out the liquid in the solid feces, replacing the steps or equipment that require multiple extrusion and filtration, thereby improving the work efficiency of feces treatment.

[0027] 2. During the rotation of the filter housing, the filter housing will drive the sliding plate and the positioning plate to rotate synchronously. At the same time, the cooperation between the threaded sleeve and the reciprocating thread groove can drive the sliding plate to move toward the positioning plate, thereby squeezing the fecal solids between the sliding plate and the positioning plate.

[0028] 3. The brush can clean the residual solids on the inner wall of the filter housing to prevent the residual solids from clogging the filter holes. The cooperation between the punch and the punch head can punch holes in the compressed solids, allowing the liquid in the middle of the solids to flow out through the holes. The telescopic parts between the positioning plate and the fixed plate can push the solids to move a certain distance after compressing the feces solids, preventing the compressed solids from adhering to the filter housing and being unable to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the dry-wet separation device of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure inside the filter housing of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the extrusion unit of the present invention.

[0032] Figure 4 It is a structural schematic diagram of the first baffle of the present invention.

[0033] Figure 5 It is a structural schematic diagram of the sliding plate of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the positioning plate of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the installation sleeve of the present invention.

[0036] Reference numerals:

[0037] 1. Filter housing; 2. Support frame; 3. Collecting box; 4. Drive seat; 5. Support rod; 6. Mounting sleeve; 7. Extrusion unit; 8. First baffle; 11. Filter hole; 12. Discharge port; 13. Flow channel; 21. Transmission sleeve; 41. Fixed frame; 42. Transmission belt; 51. Feed pipe; 52. Solid rod; 53. Discharge port; 54. Reciprocating thread groove; 61. Second baffle; 62. Slideway; 63. Threaded sleeve; 611. Guide plate; 71. Sliding plate; 72. Positioning plate; 711. Mounting slot; 712. Brush; 713. Punch head; 721. Fixed plate; 722. Telescopic member; 723. Leakage hole; 724. Punch hole. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figures 1 to 4As shown, the present invention provides a livestock manure wet and dry separation device, including a filter housing 1. The cross-section of the filter housing 1 is square. The left end of the filter housing 1 is higher than the right end of the filter housing 1, which can facilitate the natural flow of solid feces toward one end of the filter housing 1. A discharge port 12 is provided at the right end of the filter housing 1. Both ends of the filter housing 1 are connected to a support frame 2. A collecting box 3 is installed between the two support frames 2. The collecting box 3 is located below the filter housing 1 and can receive the liquid flowing out of the filter housing 1. A support rod 5 is installed in the middle of the filter housing 1. The support rod 5 is arranged parallel to the filter housing 1. Both ends of the support rod 5 respectively pass through the two ends of the filter housing 1 and are respectively connected to the two support frames 2. A transmission sleeve 21 is fixedly connected to the middle of the left end of the filter housing 1. The transmission sleeve 21 is rotatably connected to the support frame 2, and the transmission sleeve 21 is sleeved on the support rod 5. , the support frame 2 on the left end of the filter housing 1 is fixedly connected to the drive seat 4, and the support frame 2 has a motor inside, which is connected to the transmission sleeve 21 through a transmission belt 42. The middle part of the support rod 5 is rotatably connected to the mounting sleeve 6, and the left end of the mounting sleeve 6 is fixedly connected to the first baffle 8, which contacts the inner wall of the filter housing 1. The first baffle 8 and the left end of the filter housing 1 form a storage space for storing feces. There is a notch in the first baffle 8, and a flow channel 13 is formed between the first baffle 8 and the inner wall of the filter housing 1. A second baffle 61 is fixedly connected to the mounting sleeve 6, and the second baffle 61 corresponds to the flow channel 13. The second baffle 61 can intercept fecal solids entering the flow channel 13. In detail, the second baffle 61 has a tilted guide plate 611, which can allow fecal solids to flow into the extrusion unit 7. The mounting sleeve 6 is provided with an extrusion unit 7 for compressing the feces solids. The extrusion unit 7 is used to compress the feces solids and squeeze out the liquid in the feces solids, so as to facilitate better processing of the feces.

[0040] like Figure 1 and Figure 7 As shown, the support rod 5 includes a feed pipe 51 and a solid rod 52. The feed pipe 51 is located at the left end of the filter housing 1 and is rotatably connected to the transmission sleeve 21. A discharge port 53 is provided on the feed pipe 51, and the discharge port 53 is located in the accommodating space. A fixing frame 41 is fixedly connected between the feed pipe 51 and the drive seat 4. The fixing frame 41 can fix the position of the feed pipe 51. The mounting sleeve 6 is rotatably connected to the solid rod 52. A threaded sleeve 63 is rotatably connected between the mounting sleeve 6 and the solid rod 52. A reciprocating thread groove 54 is provided on the solid rod 52. The threaded sleeve 63 is used in conjunction with the reciprocating thread groove 54 and is threadedly connected to the solid rod 52. A slideway 62 is provided on the mounting sleeve 6.

[0041] like Figure 3 、 Figure 6 and Figure 7As shown, the squeezing unit 7 includes a sliding plate 71 and a positioning plate 72. The sliding plate 71 is fixedly connected to the threaded sleeve 63 through the slideway 62. The threaded sleeve 63 can drive the sliding plate 71 to approach the positioning plate 72, thereby compressing the fecal solids and further squeezing out the liquid in the fecal solids. The sliding plate 71 has a mounting groove 711, and a brush 712 is fixedly connected in the mounting groove 711. The brush 712 contacts the inner wall of the filter housing 1, and the brush 712 can clean the residual solids on the inner wall of the filter housing 1 to prevent the residual solids from clogging the filter hole 11. One of the corners of the sliding plate 71 is abutted against the corresponding corner of the filter housing 1, so that the sliding plate 71 and the positioning plate 72 can compress the fecal solids into a square shape, so as to avoid the filter housing 1 being round and causing the compressed solid feces to rotate with the rotation of the filter housing 1. The sliding plate 71 is fixedly connected to a piercing head 713 on the side facing the positioning plate 72.

[0042] The positioning plate 72 is connected to a fixed plate 721 on the side opposite to the sliding plate 71, and the fixed plate 721 is fixedly connected to the mounting sleeve 6. The size of the positioning plate 72 is equal to that of the sliding plate 71. A leakage hole 723 is provided on the positioning plate 72. The leakage hole 723 can facilitate the body fluid in the fecal solid to flow out from the side. A puncture hole 724 corresponding to the puncture head 713 is provided on the positioning plate 72. The cooperation between the puncture hole 724 and the puncture head 713 can punch a hole in the compressed solid, so that the liquid in the middle of the solid can flow out along the hole. In detail, a telescopic part 722 is fixedly connected between the positioning plate 72 and the fixed plate 721. The telescopic part 722 is a spring telescopic rod. The telescopic part 722 can push the solid to move a certain distance after compressing the fecal solid to prevent the compressed solid from adhering to the filter housing 1 and being unable to move.

[0043] In this embodiment, during the rotation of the filter housing 1, the filter housing 1 will drive the sliding plate 71 and the positioning plate 72 to rotate synchronously. At the same time, the cooperation between the threaded sleeve 63 and the reciprocating thread groove 54 can drive the sliding plate 71 to move toward the positioning plate 72, thereby squeezing the fecal solids between the sliding plate 71 and the positioning plate 72.

[0044] like Figure 2 、 Figure 3 and Figure 7As shown, there are at least four groups of extrusion units 7, and the four groups of extrusion units 7 are arranged in a circular array on the mounting sleeve 6, and are staggered between adjacent two extrusion units 7. The sliding plates 71 and positioning plates 72 in the two adjacent extrusion units 7 have sliding channels in the initial state to facilitate the flow of compressed fecal solids into the other extrusion unit 7. The distance between the sliding plates 71 and the positioning plates 72 in the four groups of extrusion units 7 decreases from left to right. The area of ​​the sliding plate 71 is one-fourth of the cross-sectional area of ​​the filter housing 1. The number of threaded sleeves 63 is equal to the number of extrusion units 7. The reciprocating thread groove 54 is divided into four sections, and the pitch of the four-section reciprocating thread groove 54 decreases from left to right. The number of slides 62 is equal to the number of threaded sleeves 63, and at least four slides 62 are arranged in a circular array and correspond to the sliding plate 71.

[0045] In this embodiment, the four groups of extrusion units 7 can squeeze the feces solids multiple times to better squeeze out the liquid in the feces solids and achieve better solid-liquid separation of the feces. Among them, the extrusion distances of the four groups of extrusion units 7 are from long to short, and the extrusion torques are from small to large, which can better squeeze out the liquid in the solid feces, replacing the steps or equipment that require multiple extrusion and filtration, thereby improving the work efficiency of feces processing.

[0046] A method for separating wet and dry livestock manure comprises the following steps:

[0047] Step A: Filtration. Feces flows into the accommodating space of the filter housing 1 through the discharge port 53 on the feed pipe 51. Since the filter housing 1 is tilted, the feces undergoes preliminary solid-liquid separation as it flows toward one end of the filter housing 1 through the flow channel 13. The solids are blocked by the second baffle 61. The initial position of the flow channel 13 is located on the lower side of the filter housing 1.

[0048] Step B: Once squeezed, the filter housing 1 rotates through the cooperation between the drive seat 4, the transmission belt 42 and the transmission sleeve 21, and the filter housing 1 rotates clockwise (the direction of rotation is referenced to Figure 4 ), the solid on the second baffle 61 will slowly rotate into the first extrusion unit 7, and the sliding plate 71 will rotate with the filter housing 1. The sliding plate 71 moves toward the positioning plate 72 under the action of the threaded sleeve 63 and the reciprocating thread groove 54. After the filter housing 1 rotates forty-five degrees, the solid is compressed for the first time through the sliding plate 71 and the positioning plate 72, and the liquid in the solid feces is squeezed out. After the filter housing 1 rotates ninety degrees, the sliding plate 71 moves away from the positioning plate 72, contacting the compression of the solid feces. During the movement, the sliding plate 71 cleans the residue on the inner wall of the filter housing 1 through the brush 712. At the same time, the solid feces enters the second extrusion unit 7 under the rotation of the filter housing 1;

[0049] Step C: Secondary extrusion. The feces solids in the filter housing 1 continue to rotate. Referring to the working process of step B, after the filter housing 1 rotates 180 degrees, the solid feces are compressed for the second time. At the same time, the solid feces enter the third extrusion unit 7. The second compression process is less than the first compression process, which can further squeeze out the liquid in the solid feces.

[0050] Step D: Three squeezes. The feces solids in the filter housing 1 continue to rotate. Referring to the working process of step B, after the filter housing 1 rotates 270 degrees, the solid feces are compressed for the third time. At the same time, the solid feces enter the fourth squeezing unit 7. The third squeezing process is slower than the second squeezing process, which can further squeeze out the liquid in the solid feces.

[0051] Step E: Four squeezes. The feces solids in the filter housing 1 continue to rotate. Referring to the working process of step B, after the filter housing 1 rotates 360 degrees, the solids are compressed for the fourth time. The fourth compression process is less than the third compression process, which can further squeeze out the liquid in the solid feces. At this time, the solid feces after squeezing will be discharged through the discharge port 12, and the un-squeezed feces solids will enter the first squeezing unit 7 again, and the cycle will continue.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for separating wet and dry livestock manure, characterized in that: include: The filter housing is tilted, and both ends of the filter housing are connected to a support frame, and the support frame is connected to a drive seat, and the drive seat drives the filter housing to rotate, and a collection box is provided below the filter housing, and a discharge port is provided at one end of the filter housing; a support rod, and the support rod is parallel to the filter housing, and the two ends of the support rod respectively pass through the two ends of the filter housing and are respectively connected to two support frames; a transmission sleeve, and the transmission sleeve is rotatably connected to one of the support frames and connected to the filter housing; a mounting sleeve, and the mounting sleeve is rotatably mounted on the support rod, and the mounting sleeve A first baffle is connected to one end of the transmission sleeve, the first baffle contacts the inner wall of the filter housing, the first baffle has a notch, a flow channel is formed between the first baffle and the inner wall of the filter housing, the mounting sleeve is connected to a second baffle, the second baffle corresponds to the flow channel; an extrusion unit is provided on the mounting sleeve, the extrusion unit is used to compress the fecal solids and squeeze out the liquid in the fecal solids, the extrusion units are at least four groups, and the four groups of extrusion units are arranged in a ring array on the mounting sleeve to squeeze the fecal solids multiple times to achieve better solid-liquid separation in the feces; The compression unit includes a sliding plate and a positioning plate, wherein the sliding plate slides on the mounting sleeve, the positioning plate is connected to the mounting sleeve, and the sliding plate moves toward the positioning plate to compress the fecal solids.

2. The livestock manure dry-wet separation device according to claim 1, characterized in that: The adjacent two extrusion units are staggered, and the sliding plates and positioning plates in the adjacent two extrusion units have sliding channels in the initial state. The distances between the sliding plates and positioning plates in the four groups of extrusion units decrease from left to right.

3. The livestock manure dry-wet separation device according to claim 1, characterized in that: The support rod includes a feed pipe and a solid rod. The feed pipe is located at the feed end of the filter housing and is rotatably connected to the transmission sleeve. A discharge port is provided on the feed pipe. The mounting sleeve is rotatably connected to the solid rod. A threaded sleeve is rotatably connected between the mounting sleeve and the solid rod. A reciprocating threaded groove is provided on the solid rod. The threaded sleeve is threadedly connected to the solid rod. A slideway is provided on the mounting sleeve.

4. The livestock manure dry-wet separation device according to claim 3, characterized in that: The number of the threaded sleeves is equal to the number of the extrusion units, the reciprocating thread groove is divided into four sections, the pitch of the four sections of the reciprocating thread groove decreases from left to right, the number of the slideways is equal to the number of the threaded sleeves, and at least four of the slideways are arranged in a circular array and correspond to the sliding plate.

5. The livestock manure wet and dry separation device according to claim 1, characterized in that: The cross section of the filter housing is square, one of the corners of the sliding plate abuts against the corresponding corner of the filter housing, and the area of ​​the sliding plate surface is one quarter of the cross section area of ​​the filter housing.

6. The livestock manure wet and dry separation device according to claim 1, characterized in that: The sliding plate is provided with a mounting groove, in which a brush is fixedly connected. The brush contacts the inner wall of the filter housing. A tying head is fixedly connected to one side of the sliding plate facing the positioning plate.

7. The livestock manure dry-wet separation device according to claim 6, characterized in that: A fixing plate is connected to one side of the positioning plate opposite to the sliding plate. The fixing plate is connected to the mounting sleeve. A leakage hole is provided on the positioning plate. A piercing hole corresponding to the piercing head is provided on the positioning plate.

8. The livestock manure wet and dry separation device according to claim 7, characterized in that: A telescopic piece is fixedly connected between the positioning plate and the fixing plate.

9. A method for separating wet and dry livestock manure, characterized in that: The livestock manure dry-wet separation device according to claim 1 includes the following steps: Step A: filtration, the manure flows into the filter housing through the support rod, and in the process of the manure flowing to one end of the filter housing through the flow channel, the manure will undergo preliminary solid-liquid separation, and the solid will be blocked by the second baffle; Step B: one-time extrusion, the filter housing rotates through the drive seat, and the solid on the second baffle will rotate into the first extrusion unit. After the filter housing rotates ninety degrees, the solid is compressed for the first time, and the liquid in the solid manure is squeezed out, and at the same time, the solid manure enters the second extrusion unit; Step C: secondary extrusion, the manure solid in the filter housing continues to rotate, and after the filter housing rotates one hundred and eighty degrees, the solid is compressed for the second time. , and at the same time, the solid feces enters the third extrusion unit, and the second compression process is less than the first compression process; step D: three extrusions, the feces solids in the filter shell continue to rotate, and after the filter shell rotates 270 degrees, the solids are compressed for the third time, and at the same time, the solid feces enters the fourth extrusion unit, and the third compression process is less than the second compression process; step E: four extrusions, the feces solids in the filter shell continue to rotate, and after the filter shell rotates 360 degrees, the solids are compressed for the fourth time, and the fourth compression process is less than the third compression process. At this time, the solid feces after extrusion will be discharged through the discharge port, and the unextruded feces solids enter the first extrusion unit again, and the cycle is repeated.

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