Centralized harmless livestock excrement treatment device for livestock farm

Abstract

The invention relates to the technical field of excrement treatment devices, and discloses a centralized harmless livestock excrement treatment device for a livestock farm, which is used for solving the problems that discharged livestock excrement blocks a discharge port and the discharged livestock excrement is blocky to influence subsequent processing. When the main shaft rotates, the ring sleeve is driven to rotate, and a reciprocating spiral groove in the ring sleeve pushes a push plate to reciprocate, so that the push plate pushes livestock excrement discharged from a discharge port, the livestock excrement is prevented from blocking the discharge port, and the discharged livestock excrement is prevented from hindering the movement of the livestock excrement on the inner side of an extrusion sheet; therefore, the blockage of livestock excrement in the slotted screen is prevented; when a reciprocating ring reciprocates, the reciprocating ring pushes a screw rod to rotate, the screw rod drives a gear to rotate synchronously, the gear drives a transmission gear and an inner ring to rotate, an outer ring and an outer crushing gear ring as well as an inner ring and an inner crushing gear ring crush discharged livestock excrement, and the discharged livestock excrement is prevented from being in a block shape and affecting subsequent processing.

Description

Technical Field

[0001] The present application relates to the technical field of excrement treatment devices, and in particular to a centralized harmless livestock excrement treatment device for livestock farms. Background Art

[0002] The development of modern livestock farming and the rise of factory farming have enriched people's material needs, but have also brought about the proliferation of livestock manure and sewage, causing pollution to water sources, air, and the environment. Modern livestock manure treatment generally requires pretreatment (solid-liquid separation), anaerobic fermentation, membrane bioreactor and other steps. Among them, when pretreating livestock manure, a screw extrusion separator is often used for solid-liquid separation.

[0003] In the process of solid-liquid separation of livestock manure by a spiral extrusion separator, the livestock manure needs to be squeezed by spiral blades and then discharged through the edge of the extrusion plate at the discharge port, and the livestock manure after the liquid is separated falls to the ground. However, when the spiral extrusion separator is continuously used to separate the solid-liquid of livestock manure, the livestock manure after the liquid is separated accumulates at the position of the discharge port, causing the livestock manure after the liquid is separated to be blocked at the edge of the discharge port, which squeezes the livestock manure to be discharged later, causing internal blockage; and, after being squeezed by the extrusion plate at the discharge port, some of the discharged livestock manure will be in block form, and the block-shaped livestock manure will have an adverse effect on subsequent processing. Summary of the invention

[0004] The present application proposes a centralized harmless livestock manure treatment device for livestock farms, which has the advantages of preventing the discharged livestock manure from clogging the discharge port and the discharged livestock manure can be in the form of loose particles, and is used to solve the problem that the discharged livestock manure blocks the discharge port and the discharged livestock manure is in the form of blocks, affecting subsequent processing.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a centralized harmless livestock manure treatment device for livestock farms, comprising a support platform, a power mechanism, a main shaft, a spiral blade, a support frame, a slit screen, an extrusion sheet, an extrusion spring and an adjustment ring, wherein the extrusion sheet is connected with a pushing mechanism for pushing the discharged livestock manure away from a discharge port, and the pushing mechanism comprises: a ring sleeve, which is movably arranged on the outside of the main shaft, and one end is fixedly connected to the extrusion sheet, and a reciprocating spiral groove is provided on the outer wall of the ring sleeve; a reciprocating ring, which is movably arranged on the outside of the ring sleeve, and a slider is fixedly connected to the inner wall, and the slider is slidably installed in the reciprocating spiral groove; a push plate, which is fixedly connected to the bottom end of the reciprocating ring, and the side wall of the push plate is close to the slit screen shell; the extrusion sheet and the discharge port of the slit screen are connected with a crushing mechanism for crushing the discharged livestock manure.

[0006] Furthermore, the push plate is provided with a plurality of holes penetrating the push plate.

[0007] Further, the crushing mechanism includes: an outer ring, one end of which is movably connected to the side wall at the discharge opening of the slotted screen; an outer crushing tooth ring provided on the outer ring, and the crushing teeth are inserted into the outer ring; an inner ring, one end of which is fixedly connected to the extrusion sheet; an inner crushing tooth ring provided on the inner ring, and the crushing teeth are inserted into the inner ring, and the crushing teeth of the outer crushing tooth ring and the inner crushing tooth ring are arranged staggeredly; the outer ring, the outer crushing tooth ring, the inner ring and the inner crushing tooth ring are movably sleeved outside the main shaft.

[0008] Further, the outer ring and the inner ring are trumpet-shaped, and the gap between the outer ring and the inner ring is a gap with a larger inner circle and a smaller outer circle.

[0009] Further, the crushing mechanism further includes: a plurality of screw rods passing through the reciprocating ring, and both ends are respectively movably inserted into the side walls of the support frame and the slotted screen; a gear fixedly sleeved on the screw rod; a plurality of transmission teeth fixedly installed on the outside of the outer ring, and the transmission teeth are engaged with the gear.

[0010] Further, the end of the outer ring is clamped on the side plate at the discharge opening of the slotted screen, the outer ring can rotate around the axis of the slotted screen, and the outer ring cannot move in the axial direction of the slotted screen.

[0011] Further, threads are provided on the screw rod, the threaded section of the screw rod passes through the reciprocating ring, and the pitches of the threads on several screw rods are the same.

[0012] Further, a ring groove is provided at one end of the inner crushing tooth ring close to the reciprocating ring, several inner push rods are clamped in the ring groove, several outer push rods are clamped on the movable groove of the outer crushing tooth ring, clamping grooves are provided on the inner push rods and the outer push rods, and the positions of the clamping grooves on the inner push rods and the outer push rods penetrate through the reciprocating ring.

[0013] Further, a cleaning mechanism for cleaning the slots of the slotted screen is provided on the slotted screen. The cleaning mechanism includes: a connecting plate, one end of which is fixedly installed on the side wall of the reciprocating ring; a cleaning ring, both sides of which are movably connected to the connecting plates on both sides; several cleaning blocks fixedly installed on the inner side wall of the cleaning ring and slidably installed in the slots of the slotted screen.

[0014] Further, a plurality of equally spaced chutes are provided on the side wall of the connecting plate, the distance between two adjacent chutes is the length of the slots on the slotted screen, and both sides of the cleaning ring are slidably installed in the chutes at the same position on the two connecting plates.

[0015] The present application has the following beneficial effects:

[0016] 1. A centralized harmless livestock manure treatment device provided by the present application. When the main shaft rotates, it drives the ring sleeve to rotate, so that the reciprocating spiral groove on the ring sleeve pushes the push plate to move back and forth, thereby pushing the livestock manure discharged from the discharge port by the push plate, preventing the livestock manure from blocking at the discharge port, avoiding the discharged livestock manure from hindering the movement of the livestock manure inside the extrusion piece, and thus preventing the livestock manure inside the slotted screen from being blocked.

[0017] 2. A centralized harmless livestock manure treatment device provided by the present application. When the reciprocating ring moves back and forth, the reciprocating ring pushes the screw rod to rotate, and the screw rod drives the gear to rotate synchronously, so that the gear drives the transmission teeth and the inner ring to rotate, and the outer ring and the outer broken tooth ring and the inner ring and the inner broken tooth ring crush the discharged livestock manure, preventing the discharged livestock manure from being in a block shape and affecting subsequent processing.

[0018] 3. A centralized harmless livestock manure treatment device provided by the present application. By the outer ring and the outer broken tooth ring and the inner ring and the inner broken tooth ring rotating in a forward and reverse manner with an intermittent change in rotational speed, the livestock manure adhered to the broken teeth on the outer broken tooth ring and the inner broken tooth ring is reduced, preventing the livestock manure adhered to the broken teeth on the outer broken tooth ring and the inner broken tooth ring from affecting the crushing efficiency of the subsequent discharged livestock manure.

[0019] 4. A centralized harmless livestock manure treatment device provided by the present application. When the reciprocating ring moves to both ends, the reciprocating ring pushes the side walls of the card slots on the inner push rod and the outer push rod, so that the inner push rod and the outer push rod drive the inner broken tooth ring and the outer broken tooth ring to move respectively, thereby scraping the inner broken tooth ring and the outer broken tooth ring by the inner ring and the outer ring, and further cleaning the livestock manure adhered to the broken teeth on the outer broken tooth ring and the inner broken tooth ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0021] Referring to the drawings, the present disclosure can be more clearly understood according to the following detailed description, wherein:

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a connection schematic diagram of the main shaft, adjusting ring, ring sleeve, reciprocating ring and push plate of the present invention;

[0024] Figure 3 is a connection schematic diagram of the ring sleeve, reciprocating ring and push plate of the present invention;

[0025] Figure 4 is a cross-sectional view of the outer ring, outer broken tooth ring, inner ring and inner broken tooth ring of the present invention;

[0026] Figure 5 For the present invention Figure 4 Local structure enlarged view at position A in the present invention;

[0027] Figure 6 Schematic structural view of the inner ring and the inner crushing tooth ring of the present invention;

[0028] Figure 7 Schematic structural view of the outer ring and the outer crushing tooth ring of the present invention;

[0029] Figure 8 Schematic structural view of the slotted screen, the reciprocating ring, the connecting plate and the cleaning ring of the present invention;

[0030] Figure 9 Schematic structural view of the cleaning ring and the cleaning block of the present invention.

[0031] In the figure: 1, support platform; 2, power mechanism; 21, main shaft; 22, spiral blade; 23, support frame; 31, feed box; 32, water collecting tank; 4, slotted screen; 51, extrusion piece; 52, extrusion spring; 53, adjusting ring; 61, ring sleeve; 62, reciprocating spiral groove; 63, reciprocating ring; 64, push plate; 71, screw; 72, gear; 73, outer ring; 74, outer crushing tooth ring; 741, outer push rod; 75, transmission tooth; 76, inner ring; 77, inner crushing tooth ring; 771, inner push rod; 81, connecting plate; 82, sliding groove; 83, cleaning ring; 84, cleaning block. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0033] Embodiment 1

[0034] Please refer to Figure 1 , Figure 2 and Figure 4, A centralized harmless livestock manure treatment device for livestock farms, comprising a support platform 1, a power mechanism 2, a slotted screen 4, a pressing piece 51, a pressing spring 52 and an adjusting ring 53. On one side of the upper end surface of the support platform 1, a power mechanism 2 is fixedly installed. The power mechanism 2 includes a power motor and a speed reducer. The output end of the power mechanism 2 is fixedly connected to a main shaft 21. A spiral blade 22 is fixedly sleeved on the main shaft 21. An inlet box 31 is sleeved outside the spiral blade 22 near one end of the power mechanism 2. One side of the inlet box 31 away from the power mechanism 2 is fixedly connected to a slotted screen 4, and the slotted screen 4 is movably sleeved outside the spiral blade 22. A water collecting tank 32 is arranged outside the slotted screen 4, and the water collecting tank 32 is fixedly installed on the support platform 1. One end of the water collecting tank 32 away from the power mechanism 2 is fixedly connected to a support frame 23, and the support frame 23 is movably sleeved on the end of the main shaft 21. A pressing piece 51, a pressing spring 52 and an adjusting ring 53 are arranged on the main shaft 21 between the support frame 23 and the water collecting tank 32. The pressing piece 51 is fixedly sleeved on the main shaft 21, and the pressing piece 51 is closely attached to the discharge port of the slotted screen 4. One end of the pressing piece 51 away from the slotted screen 4 is fixedly connected to a pressing spring 52. The pressing spring 52 is movably sleeved outside the main shaft 21. The other end of the pressing spring 52 is fixedly connected to an adjusting ring 53, and the adjusting ring 53 is fixedly sleeved on the main shaft 21.

[0035] Please refer to Figures 1-4 , A pushing mechanism for pushing the discharged livestock manure away from the discharge port is connected to the pressing piece 51. The pushing mechanism includes a ring sleeve 61, a reciprocating ring 63 and a pushing plate 64. The ring sleeve 61 is movably sleeved outside the main shaft 21. One end of the ring sleeve 61 is fixedly connected to the pressing piece 51. The other end of the ring sleeve 61 is at a certain distance from the adjusting ring 53. A reciprocating spiral groove 62 is formed on the outer side wall of the ring sleeve 61. A reciprocating ring 63 is movably sleeved outside the ring sleeve 61. A slider is fixedly connected to the inner wall of the reciprocating ring 63. The slider is slidably installed in the reciprocating spiral groove 62. The bottom end of the reciprocating ring 63 is fixedly connected to a pushing plate 64. When the reciprocating ring 63 is at one end of the reciprocating spiral groove 62 close to the slotted screen 4, the side wall of the pushing plate 64 is closely attached to the slotted screen 4; when using a screw extrusion separator to separate solid and liquid from livestock manure, the power mechanism 2 drives the main shaft 21, the spiral blade 22, the pressing piece 51 and the ring sleeve 61 to rotate synchronously. Since the reciprocating ring 63 cannot rotate, the rotating ring sleeve 61 pushes the slider on the reciprocating ring 63 to slide in the reciprocating spiral groove 62, so that the slider drives the reciprocating ring 63 to reciprocate axially in the reciprocating spiral groove 62. The reciprocating ring 63 drives the pushing plate 64 to move synchronously. When the pushing plate 64 reciprocates axially in the reciprocating spiral groove 62, the pushing plate 64 pushes or pulls the livestock manure below the discharge port of the pressing piece 51 and the slotted screen 4 to move, so that the livestock manure below the discharge port of the pressing piece 51 and the slotted screen 4 is away from the discharge port, preventing the livestock manure from blocking at the discharge port and avoiding the discharged livestock manure from hindering the movement of the livestock manure inside the pressing piece 51, thereby preventing the livestock manure inside the slotted screen 4 from being blocked.

[0036] The pushing plate 64 is provided with a plurality of holes penetrating through the pushing plate 64; when the pushing plate 64 pushes or pulls the discharged livestock manure, part of the massive livestock manure is extruded by the pushing plate 64, and part of it slides out from the holes of the pushing plate 64, so that the massive livestock manure can be extruded and crushed to a certain extent.

[0037] The working principle of the first embodiment of the present invention is as follows:

[0038] Please refer to Figures 1-4 , when using the screw extrusion separator to separate the solid and liquid of livestock manure, the power mechanism 2 drives the main shaft 21, the screw blade 22, the extrusion piece 51 and the ring sleeve 61 to rotate synchronously. Since the reciprocating ring 63 cannot rotate, the rotating ring sleeve 61 pushes the slider on the reciprocating ring 63 to slide in the reciprocating spiral groove 62, so that the slider drives the reciprocating ring 63 to reciprocate axially in the reciprocating spiral groove 62. The reciprocating ring 63 drives the pushing plate 64 to move synchronously. When the pushing plate 64 reciprocates axially in the reciprocating spiral groove 62, the pushing plate 64 pushes or pulls the livestock manure below the discharge port of the extrusion piece 51 and the slotted screen 4 to move, so that the livestock manure below the discharge port of the extrusion piece 51 and the slotted screen 4 is far away from the discharge port, preventing the livestock manure from blocking at the discharge port, avoiding the discharged livestock manure from obstructing the livestock manure inside the extrusion piece 51, and thus preventing the livestock manure inside the slotted screen 4 from being blocked.

[0039] Embodiment Two

[0040] Embodiment Two is a further improvement based on Embodiment One.

[0041] Different from Embodiment One, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7The extrusion sheet 51 and the discharge port of the slit screen 4 are connected with a crushing mechanism for crushing the discharged livestock manure, and the crushing mechanism includes an outer ring 73, an outer crushing tooth ring 74, an inner ring 76 and an inner crushing tooth ring 77. The outer ring 73, the outer crushing tooth ring 74, the inner ring 76 and the inner crushing tooth ring 77 are movably sleeved on the outer side of the main shaft 21, and one end of the outer ring 73 is movably connected to the side wall at the discharge port position of the slit screen 4. The outer ring 73 is provided with an outer crushing tooth ring 74, and the outer crushing tooth ring 74 is between the outer ring 73 and the slit screen 4. The outer crushing tooth ring 74 is a permanent magnet ring, and a permanent magnet block is embedded in the outer ring 73. The permanent magnet block in the outer ring 73 generates a magnetic force to attract the outer crushing tooth ring 74. The crushing teeth of the outer crushing tooth ring 74 are inserted on the outer ring 73, and one end of the inner ring 76 is fixedly connected to the extrusion sheet 51. There is an inner crushing tooth ring 77, and the inner crushing tooth ring 77 is on the side of the inner ring 76 away from the outer ring 73. The inner crushing tooth ring 77 is a permanent magnet ring, and a permanent magnet block is embedded in the inner ring 76. The permanent magnet block in the inner ring 76 generates a magnetic force to attract the inner crushing tooth ring 77. The crushing teeth of the inner crushing tooth ring 77 are inserted on the inner ring 76, and the crushing teeth of the outer crushing tooth ring 74 on the outer ring 73 and the crushing teeth of the inner crushing tooth ring 77 on the inner ring 76 are staggered. In the process of the extrusion sheet 51 and the ring sleeve 61 rotating, the extrusion sheet 51 drives the inner ring 76 and the inner crushing tooth ring 77 to rotate synchronously. Due to the speed difference, the crushing teeth on the rotating inner crushing tooth ring 77 and the crushing teeth on the outer crushing tooth ring 74 crush the discharged livestock manure, thereby avoiding the discharge of block-shaped livestock manure and preventing the discharged livestock manure from being in block shape and affecting subsequent processing.

[0042] The outer ring 73 and the inner ring 76 are trumpet-shaped, and the gap between the outer ring 73 and the inner ring 76 is a gap in which the inner ring is larger and the outer ring is smaller; when livestock manure gradually moves from the gap between the outer ring 73 and the inner ring 76 to the outer ring, it is ensured that the crushed block livestock manure can pass through, while the uncrushed block livestock manure cannot move to the gap between the outer ring 73 and the outer ring 76, thereby ensuring the crushing effect.

[0043] The crushing mechanism further includes a screw rod 71, a gear 72 and a transmission gear 75. A plurality of screw rods 71 arranged in an annular array penetrate through the reciprocating ring 63. The two ends of the screw rod 71 are respectively movably inserted into the side walls of the support frame 23 and the slotted screen 4. A gear 72 is fixedly sleeved on the screw rod 71. A plurality of transmission gears 75 arranged in an annular array are fixedly installed on the outer side of the outer ring 73. The transmission gears 75 are meshed with the gear 72. When the ring sleeve 61 rotates and the reciprocating spiral groove 62 on the ring sleeve 61 pushes the reciprocating ring 63 to move back and forth, the moving reciprocating ring 63 pushes the thread on the screw rod 71, causing the screw rod 71 to rotate. The rotating screw rod 71 drives the gear 72 to rotate synchronously, so that the gear 72 drives the transmission gears 75, the outer ring 73 and the outer crushing tooth ring 74 to rotate synchronously. Moreover, the outer ring 73 and the outer crushing tooth ring 74 present intermittent forward and reverse rotations. The forward and reverse rotations of the outer ring 73 and the outer crushing tooth ring 74 change the speed difference between the outer ring 73 and the outer crushing tooth ring 74 and the inner ring 76 and the inner crushing tooth ring 77, thereby reducing the livestock manure sticking to the crushing teeth on the outer crushing tooth ring 74 and the inner crushing tooth ring 77 and preventing the livestock manure sticking to the crushing teeth on the outer crushing tooth ring 74 and the inner crushing tooth ring 77 from affecting the crushing efficiency of the subsequent discharged livestock manure.

[0044] The end of the outer ring 73 is clamped on the side plate at the discharge port position of the slotted screen 4, and the outer ring 73 can rotate around the axis of the slotted screen 4, and the outer ring 73 cannot move axially on the slotted screen 4.

[0045] Threads are provided on the screw rod 71. The threaded section of the screw rod 71 penetrates through the reciprocating ring 63, and the pitches of the threads on several screw rods 71 are the same. When the reciprocating ring 63 moves, it is ensured that the reciprocating ring 63 pushes the thread on the screw rod 71, so that the rotation speeds of the screw rods 71 are the same, thereby ensuring that the gear 72 on the screw rod 71 does not hinder the rotation of the transmission gear 75.

[0046] Please refer to Figure 2 、 Figure 6 and Figure 7, a ring groove is provided at one end of the inner crushing tooth ring 77 close to the reciprocating ring 63. A number of inner push rods 771 are clamped in the ring groove. A clamping groove is provided on the inner push rod 771. An activity groove is provided on the side wall of the outer crushing tooth ring 74. A number of outer push rods 741 are clamped on the activity groove of the outer crushing tooth ring 74. The outer push rod 741 can slide in the activity groove of the outer crushing tooth ring 74, and the outer push rod 741 points to the reciprocating ring 63. A clamping groove is provided on the outer push rod 741. The positions of the clamping grooves on the inner push rod 771 and the outer push rod 741 penetrate through the reciprocating ring 63; when the ring sleeve 61 rotates, the reciprocating spiral groove 62 on the ring sleeve 61 pushes the reciprocating ring 63 to move back and forth. When the reciprocating ring 63 moves to one end of the reciprocating spiral groove 62 close to the slotted screen 4, the reciprocating ring 63 pushes the side wall of the clamping groove on the outer push rod 741, so that the outer push rod 741 drives the outer crushing tooth ring 74 and the crushing teeth on the outer crushing tooth ring 74 to move, so that the outer ring 73 scrapes off the livestock manure adhered to the crushing teeth of the outer crushing tooth ring 74; when the reciprocating ring 63 moves to one end of the reciprocating spiral groove 62 away from the slotted screen 4, the reciprocating ring 63 pushes the side wall of the clamping groove on the inner push rod 771, so that the inner push rod 771 drives the inner crushing tooth ring 77 and the crushing teeth on the inner crushing tooth ring 77 to move, so that the inner ring 76 scrapes off the livestock manure adhered to the crushing teeth of the inner crushing tooth ring 77, further cleaning the livestock manure adhered to the crushing teeth of the outer crushing tooth ring 74 and the inner crushing tooth ring 77.

[0047] The working principle of the second embodiment of the present invention is as follows:

[0048] Please refer to Figures 1-7 , during the rotation of the extrusion sheet 51 and the ring sleeve 61, the extrusion sheet 51 drives the inner ring 76 and the inner crushing tooth ring 77 to rotate synchronously. Due to the speed difference, the crushing teeth on the rotating inner crushing tooth ring 77 and the crushing teeth on the outer crushing tooth ring 74 crush the discharged livestock manure, so as to avoid the discharge of blocky livestock manure and prevent the discharged livestock manure from being in a blocky shape and affecting subsequent processing;

[0049] When the ring sleeve 61 rotates and the reciprocating spiral groove 62 on the ring sleeve 61 pushes the reciprocating ring 63 to move back and forth, the moving reciprocating ring 63 pushes the thread on the screw rod 71, so that the screw rod 71 rotates. The rotating screw rod 71 drives the gear 72 to rotate synchronously, so that the gear 72 drives the transmission teeth 75, the outer ring 73 and the outer crushing tooth ring 74 to rotate synchronously, and the outer ring 73 and the outer crushing tooth ring 74 show intermittent positive and negative rotations. The outer ring 73 and the outer crushing tooth ring 74 with positive and negative rotations change the speed difference between the outer ring 73 and the outer crushing tooth ring 74 and the inner ring 76 and the inner crushing tooth ring 77, so as to reduce the livestock manure adhered to the crushing teeth of the outer crushing tooth ring 74 and the inner crushing tooth ring 77 and prevent the livestock manure adhered to the crushing teeth of the outer crushing tooth ring 74 and the inner crushing tooth ring 77 from affecting the crushing efficiency of the subsequent discharged livestock manure.

[0050] When the collar 61 rotates, the reciprocating spiral groove 62 on the collar 61 pushes the reciprocating ring 63 to move reciprocally. When the reciprocating ring 63 moves to one end of the reciprocating spiral groove 62 close to the slotted screen 4, the reciprocating ring 63 pushes the side wall of the card slot on the outer push rod 741, causing the outer push rod 741 to drive the outer crushing tooth ring 74 and the crushing teeth on the outer crushing tooth ring 74 to move, so that the outer ring 73 scrapes off the livestock manure sticking to the crushing teeth of the outer crushing tooth ring 74; when the reciprocating ring 63 moves to the end of the reciprocating spiral groove 62 far from the slotted screen 4, the reciprocating ring 63 pushes the side wall of the card slot on the inner push rod 771, causing the inner push rod 771 to drive the inner crushing tooth ring 77 and the crushing teeth on the inner crushing tooth ring 77 to move, so that the inner ring 76 scrapes off the livestock manure sticking to the crushing teeth of the inner crushing tooth ring 77, further cleaning the livestock manure sticking to the crushing teeth of the outer crushing tooth ring 74 and the inner crushing tooth ring 77.

[0051] Embodiment III

[0052] Embodiment III is a further improvement based on Embodiment II.

[0053] Different from Embodiment II, please refer to Figure 1 、 Figure 2 、 Figure 8 and Figure 9 , a cleaning mechanism for cleaning the slots of the slotted screen 4 is provided on the slotted screen 4. The cleaning mechanism includes a connecting plate 81, a cleaning ring 83 and a cleaning block 84. One end of the connecting plate 81 is fixedly installed on the side wall of the reciprocating ring 63, and the connecting plate 81 is on both sides of the slotted screen 4. A cleaning ring 83 is movably connected to the two connecting plates 81 on both sides. The cleaning ring 83 is movably sleeved outside the slotted screen 4, and a number of cleaning blocks 84 arranged in an annular array are fixedly installed on the inner side wall of the cleaning ring 83. The cleaning blocks 84 are slidably installed in the slots of the slotted screen 4; when the collar 61 rotates, the reciprocating spiral groove 62 on the collar 61 pushes the reciprocating ring 63 to move reciprocally, the reciprocating ring 63 drives the connecting plate 81 to move synchronously, and the moving connecting plate 81 drives the cleaning ring 83 and the cleaning block 84 to move, so that the cleaning block 84 scrapes off the impurities blocked in the slots of the slotted screen 4, preventing the slots of the slotted screen 4 from being blocked and affecting the effect of solid-liquid separation of livestock manure.

[0054] A number of equally spaced chutes 82 are formed on the side wall of the connecting plate 81. The distance between two adjacent chutes 82 is the length of the slot on the slotted screen 4, and the length of the chute 82 is the difference between the length of the reciprocating spiral groove 62 on the collar 61 and the length of the slot on the slotted screen 4. The two sides of the cleaning ring 83 are respectively slidably installed in the chutes 82 at the same position on the two connecting plates 81.

[0055] The working principle of Embodiment III of the present invention is as follows:

[0056] Please refer to Figures 1-9, when the collar 61 rotates, the reciprocating spiral groove 62 on the collar 61 pushes the reciprocating ring 63 to move reciprocally. The reciprocating ring 63 drives the connecting plate 81 to move synchronously. The moving connecting plate 81 drives the cleaning ring 83 and the cleaning block 84 to move, so that the cleaning block 84 scrapes the impurities blocked in the slots of the slot screen 4, preventing the slots of the slot screen 4 from being blocked and affecting the effect of solid-liquid separation of livestock manure.

Claims

1. A centralized harmless livestock excrement treatment device for livestock farms, comprising a support platform (1), a power mechanism (2), a main shaft (21), a spiral blade (22), a support frame (23), a slit screen (4), an extrusion sheet (51), an extrusion spring (52) and an adjustment ring (53), characterized in that: The extrusion sheet (51) is connected to a pushing mechanism for pushing discharged livestock excrement away from the discharge port, and the pushing mechanism comprises: A ring sleeve (61) is movably mounted on the outside of the main shaft (21) and one end of which is fixedly connected to the extrusion sheet (51). A reciprocating spiral groove (62) is formed on the outer wall of the ring sleeve (61); A reciprocating ring (63) is movably sleeved on the outside of the ring sleeve (61), and a slider is fixedly connected to the inner wall thereof, and the slider is slidably installed in the reciprocating spiral groove (62); A push plate (64) is fixedly connected to the bottom end of the reciprocating ring (63), and the side wall of the push plate (64) is closely attached to the shell of the slotted screen (4); The extrusion sheet (51) and the discharge port of the slotted screen (4) are connected to a crushing mechanism for crushing the discharged livestock excrement.

2. The centralized harmless livestock excrement treatment device for livestock farms according to claim 1 is characterized by: The push plate (64) is provided with a plurality of holes penetrating the push plate (64).

3. The centralized harmless livestock excrement treatment device for livestock farms according to claim 1 is characterized by: The crushing mechanism comprises: An outer ring (73) has one end movably connected to the side wall of the slotted screen (4) at the discharge port; An outer crushing tooth ring (74) is arranged on the outer ring (73), and the crushing teeth are inserted on the outer ring (73); An inner ring (76) has one end fixedly connected to the extrusion sheet (51); An inner crushing tooth ring (77) is arranged on the inner ring (76), and crushing teeth are inserted into the inner ring (76), and the crushing teeth of the outer crushing tooth ring (74) and the crushing teeth of the inner crushing tooth ring (77) are arranged alternately; The outer ring (73), the outer crushing tooth ring (74), the inner ring (76) and the inner crushing tooth ring (77) are movably sleeved on the outer side of the main shaft (21).

4. The centralized harmless livestock excrement treatment device for livestock farms according to claim 3 is characterized by: The outer ring (73) and the inner ring (76) are trumpet-shaped, and the gap between the outer ring (73) and the inner ring (76) is a gap in which the inner ring is larger and the outer ring is smaller.

5. The centralized harmless livestock excrement treatment device for livestock farms according to claim 3 is characterized by: The crushing mechanism also includes: A plurality of screw rods (71) penetrate the reciprocating ring (63), and the two ends of the screw rods are movably inserted into the supporting frame (23) and the side wall of the slit screen (4); A gear (72) is fixedly sleeved on the screw (71); A plurality of transmission teeth (75) are fixedly mounted on the outer side of the outer ring (73), and the transmission teeth (75) are meshed with the gear (72).

6. The centralized harmless livestock excrement treatment device for livestock farms according to claim 5, characterized in that: The end of the outer ring (73) is clamped on the side plate at the discharge port of the slotted screen (4), and the outer ring (73) can rotate around the axis of the slotted screen (4), but cannot move in the axial direction of the slotted screen (4).

7. The centralized harmless livestock excrement treatment device for livestock farms according to claim 5 is characterized by: The screw rod (71) is provided with a thread, the thread section of the screw rod (71) passes through the reciprocating ring (63), and the thread pitches of the threads on a plurality of the screw rods (71) are the same.

8. The centralized harmless livestock excrement treatment device for livestock farms according to claim 5 is characterized by: An annular groove is provided at one end of the inner crushing tooth ring (77) close to the reciprocating ring (63), and a plurality of inner push rods (771) are clamped in the annular groove. A movable groove is provided on the side wall of the outer crushing tooth ring (74), and a plurality of outer push rods (741) are clamped on the movable groove of the outer crushing tooth ring (74). The inner push rods (771) and the outer push rods (741) are provided with clamping grooves, and the positions where the clamping grooves are provided on the inner push rods (771) and the outer push rods (741) pass through the reciprocating ring (63).

9. The centralized harmless livestock excrement treatment device for livestock farms according to claim 8, characterized in that: The slotted screen (4) is provided with a cleaning mechanism for cleaning the slotted screen (4), and the cleaning mechanism comprises: A connecting plate (81) having one end fixedly mounted on the side wall of the reciprocating ring (63); A cleaning ring (83), two sides of which are movably connected to the connecting plates (81) on both sides; A plurality of cleaning blocks (84) are fixedly mounted on the inner side wall of the cleaning ring (83) and slidably mounted in the slits of the slit screen (4).

10. The centralized harmless livestock excrement treatment device for livestock farms according to claim 9, characterized in that: The side wall of the connecting plate (81) is provided with a plurality of equally spaced slide grooves (82), the distance between two adjacent slide grooves (82) being the length of the slits on the slit screen (4), and the two sides of the cleaning ring (83) are respectively slidably mounted in the slide grooves (82) at the same position on the two connecting plates (81).

Images