Farm sewage treatment device

Abstract

The invention discloses a livestock farm sewage treatment device which comprises a shell, a partition plate is fixedly connected to the middle of an inner cavity of the shell, a filter plate is fixedly connected to the middle of the upper end of the partition plate, a filter screen is fixedly connected to one side of the filter plate, and a scraping plate used for cleaning the filter screen is arranged at the upper end of the partition plate. A mounting cavity is formed in the side wall of the upper portion of the shell, a guide mechanism used for driving the scraper to move is arranged in an inner cavity of the mounting cavity, and when the output end of the guide mechanism horizontally moves in the direction where the filter plate is located, the scraper can be driven to vertically move upwards. Through horizontal reciprocating motion of a guide plate, a scraper blade can intermittently move upwards through cooperation of a guide groove and a driven rod, impurity gaps on a filter screen are cleaned, through cooperation of a filter plate, the filter screen and a plugging plate, the filter screen is supported while the filtering effect of the filter screen is not affected, and the filter screen is prevented from being damaged. And the situation that the cleaning effect of the scraper is affected due to deformation of the filter screen caused by water flow impact and impurity accumulation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a sewage treatment device for a breeding farm. Background Technique

[0002] Breeding farms are divided into large-scale livestock and poultry farms and small-scale livestock and poultry farms. The large-scale livestock and poultry farm has three major sub-farms and three major research rooms, namely beef cattle breeding farm, mutton sheep breeding farm, meat donkey breeding farm, beef cattle research room, mutton sheep research room and meat donkey research room. It is a regular livestock and poultry enterprise integrating breeding, breeding, scientific research, improvement and promotion. However, whether it is a large-scale or small-scale breeding farm, a large amount of breeding sewage will be generated, and this breeding sewage cannot be directly discharged into the external environment. It needs to be filtered, precipitated and disinfected before it can be discharged into the external environment.

[0003] For example, Chinese Patent Publication No. CN216863838U provides a sewage treatment device for a pig breeding farm. The sewage treatment device for the pig breeding farm includes a filter box. A limit groove and a sewage inlet are provided at the top of the filter box. Two support plates are fixedly installed at the bottom of the filter box, and sewage discharge openings are provided on both sides of the filter box.

[0004] In this solution, after the sewage is filtered by the filter screen, the impurities on the filter screen are scraped and cleaned by the sliding plate. However, the filter screen itself is relatively soft, and after accumulating a certain amount of impurities, it may deform, resulting in the sliding plate not being able to fit completely with the filter screen. Moreover, some soft and fluffy impurities may get stuck in the gaps of the filter screen during the scraping process of the sliding plate, thus affecting the subsequent filtering effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a sewage treatment device for a breeding farm to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution:

[0007] A sewage treatment device for a breeding farm includes a housing. A partition plate is fixedly connected to the middle of the inner cavity of the housing. A filter plate is fixedly connected to the middle of the upper end of the partition plate. A filter screen is fixedly connected to one side of the filter plate. A scraper for cleaning the filter screen is provided at the upper end of the partition plate. An installation cavity is provided on the upper side wall of the housing. A guiding mechanism for driving the scraper to move is arranged in the inner cavity of the installation cavity. When the output end of the guiding mechanism moves horizontally towards the direction where the filter plate is located, it will drive the scraper to move vertically upward.

[0008] As a further solution of the present invention: a sealing plate is provided on the side of the filter plate away from the filter screen. In the middle of the side of the sealing plate away from the filter plate, symmetric connecting plates are fixedly connected. One end of the connecting plate away from the sealing plate is horizontally slidably connected to the inner cavity side wall of the housing. A number of through holes are evenly formed in the side wall of the filter plate. A number of protrusions are fixedly connected to the side of the sealing plate close to the filter plate. The size and position of the protrusions correspond to those of the through holes. In the middle of the side wall of the inner cavity of the installation cavity away from the connecting plate, an electric retractable push rod is drivingly connected. The output end of the electric retractable push rod is fixedly connected with a U-shaped plate. The U-shaped plate is horizontally slidably connected to the inner cavity side wall of the installation cavity. A servo motor is fixedly connected to the bottom of the inner cavity of the U-shaped plate. The output end of the servo motor is fixedly connected with a push rod.

[0009] As a further solution of the present invention: a gear is provided between the U-shaped plate and the connecting plate. The gear is rotatably connected to the side wall of the inner cavity of the installation cavity away from the scraper. Rack teeth are provided at both the upper and lower ends of the gear. The symmetrically arranged rack teeth are all meshed with the gear. One end of the rack tooth located below away from the gear is fixedly connected to the lower end of the U-shaped plate. One end of the rack tooth located above away from the gear is fixedly connected to the upper end of the connecting plate.

[0010] As a further solution of the present invention: the guiding mechanism includes a guiding plate. The guiding plate is horizontally slidably connected to the side of the inner cavity of the installation cavity away from the gear. Two parallel reset grooves are formed in the side of the guiding plate close to the scraper. Symmetric transition grooves are formed at both ends of the reset groove away from the connecting plate. Symmetric driven rods are slidably connected to both sides of the scraper. The outer wall of the driven rod is vertically slidably connected to the inner cavity side wall of the housing. One end of the driven rod away from the scraper extends into the inner cavity of the installation cavity and is slidably connected to the transition groove and the reset groove. An arc surface is formed at one end of the driven rod away from the scraper. A number of guiding grooves are formed in the side wall of the guiding plate. Balancing grooves are formed between adjacent guiding grooves.

[0011] As a further solution of the present invention: an inclined block is fixedly connected to the connection part between the upper end of the guiding groove and the balancing groove. A first inclined surface is formed on the side of the inclined block close to the guiding groove. One end of the first inclined surface close to the guiding groove is farther away from the position of the scraper than the end close to the balancing groove. A rotating plate is rotatably connected to the connection part between the end of the balancing groove close to the reset groove and the guiding groove.

[0012] As a further solution of the present invention: the upper end of the rotating plate is rotatably connected to the lower part of the inner cavity of the guide groove on the side close to the balance groove. The horizontal width of the rotating plate is smaller than the horizontal width of the side wall of the inner cavity of the guide groove, and the horizontal width of the rotating plate is larger than the horizontal width of the top end of the inclined block. One end of the rotating plate close to the balance groove is fixedly connected with a guide rod. An arc-shaped groove for using in cooperation with the guide rod is opened on the side wall of the inner cavity of the guide groove away from the scraper. The guide rod is slidably connected in the arc-shaped groove.

[0013] As a further solution of the present invention: a first bin is opened on the side of the scraper close to the filter screen. A second bin is opened at one end of the first bin away from the filter screen. A third bin is opened at one end of the second bin away from the first bin. The first bin and the second bin have the same horizontal width. The horizontal width of the second bin is larger than the horizontal width of the third bin. The vertical height of the third bin is larger than the vertical height of the second bin. The vertical height of the first bin is the same as that of the third bin. A partition net is fixedly connected to one side of the inner cavity of the first bin close to the second bin. A moving plate is arranged in a fitting manner on the side of the partition net away from the first bin.

[0014] As a further solution of the present invention: a connecting rod is rotatably connected to the middle of one end of the moving plate away from the partition net. A support rod is fixedly connected to the middle of one end of the connecting rod away from the partition net. The height of the moving plate is the same as the vertical height of the inner cavity of the second bin. Symmetrical storage cavities are opened at the top of the inner cavity of the first bin. The horizontal width of the storage cavity is smaller than that of the second bin. An inclined plate is vertically slidably connected in the inner cavity of the storage cavity. A second inclined surface is opened at the lower end of the inclined plate.

[0015] As a further solution of the present invention: rollers are rotatably connected to the outer walls of the two ends of the support rod away from the connecting rod. Extension plates are fixedly connected to both ends of the side of the symmetrical guide plates away from the filter plate. A push plate is fixedly connected to the middle between the symmetrical extension plates. A chute for using in cooperation with the support rod is opened in the middle of the push plate. The outer wall of the support rod is slidably matched with the chute. A wheel groove is opened on the side of the chute away from the filter plate. The rollers are slidably connected in the inner cavity of the wheel groove. The horizontal width of the rollers is larger than that of the chute.

[0016] As a further solution of the present invention: symmetrical cover plates are fixedly connected to the upper end of the housing. The plane where the upper ends of the cover plates are located is lower than the plane where the upper end surfaces of the guide plates are located. A plurality of water passing holes are opened on the side of the upper end of the partition plate away from the push plate. A mixing cavity is arranged below the partition plate, and a filtering cavity is arranged above the partition plate. A stirring rod is rotatably connected to the middle of the inner cavity of the mixing cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The horizontal reciprocating motion of the guide plate can drive the scraper to move upward intermittently through the cooperation of the guide groove and the driven rod, so as to clean the impurities on the filter screen at intervals. Moreover, through the cooperation of the filter plate, the filter screen and the sealing plate, while not affecting the filtering effect of the filter screen, the filter screen can also be supported, thereby preventing the filter screen from deforming due to water flow impact and impurity accumulation, which may affect the cleaning effect of the scraper. In addition, the guide plate drives the push plate to move, which in turn drives the moving plate to reciprocate. Thus, during the process when the scraper remains stationary after moving upward, the moving plate moves away from the first bin, forming a negative pressure in the inner cavity of the first bin, and then sucking the impurities that are stuck in the gaps of the filter screen due to their soft texture after being squeezed by the scraper into the first bin, thereby completing the further cleaning of the filter screen. When the moving plate approaches the first bin, it will tilt due to the action of the inclined plate, so that there is a gap between the moving plate and the second bin, thus preventing the air flow generated when the moving plate approaches the first bin from blowing out the impurities in the first bin and causing secondary pollution to the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the whole invention.

[0020] Figure 2 It is a schematic structural diagram of the housing in the invention.

[0021] Figure 3 It is a schematic structural diagram of the installation cavity in the invention.

[0022] Figure 4 It is a schematic structural diagram of the sealing plate in the invention.

[0023] Figure 5 It is a schematic plan view of the guide plate in the invention.

[0024] Figure 6 In the invention Figure 5 It is a schematic structural diagram of Area A.

[0025] Figure 7 It is a schematic structural diagram of the guide plate in the invention.

[0026] Figure 8 In the invention Figure 7 It is a schematic structural diagram of Area B.

[0027] Figure 9 It is a schematic structural diagram of the scraper in the invention.

[0028] Figure 10 It is a schematic internal structural diagram of the scraper in the invention.

[0029] Figure 11 It is a schematic internal structural diagram of the push plate in the invention.

[0030] In the figure: 1, housing; 2, cover plate; 3, filter screen; 4, filter plate; 5, plugging plate; 6, filtration chamber; 7, mixing chamber; 8, water passing hole; 9, stirring rod; 10, electric retractable push rod; 11, U-shaped plate; 12, servo motor; 13, push rod; 14, gear; 15, rack; 16, connecting plate; 17, guide plate; 18, extension plate; 19, push plate; 20, installation cavity; 21, transition groove; 22, guide groove; 23, inclined block; 24, rotating plate; 25, balance groove; 26, reset groove; 27, guide rod; 28, arc groove; 29, first inclined surface; 30, support rod; 31, roller; 32, wheel groove; 33, sliding groove; 34, scraper; 35, driven rod; 36, first bin; 37, isolation net; 38, second bin; 39, third bin; 40, connecting rod; 41, moving plate; 42, inclined plate; 43, storage cavity; 44, second inclined surface; 45, partition plate. Specific implementation manner

[0031] Please refer to Figures 1-4 , in the embodiment of the present invention, a sewage treatment device for a farm includes a housing 1. A partition plate 45 is fixedly connected to the middle of the inner cavity of the housing 1. A filter plate 4 is fixedly connected to the middle of the upper end of the partition plate 45. A filter screen 3 is fixedly connected to one side of the filter plate 4. A scraper 34 for cleaning the filter screen 3 is arranged at the upper end of the partition plate 45. An installation cavity 20 is opened on the upper side wall of the housing 1. A guiding mechanism for driving the scraper 34 to move is arranged in the inner cavity of the installation cavity 20. When the output end of the guiding mechanism moves horizontally towards the direction where the filter plate 4 is located, it will drive the scraper 34 to move vertically upwards.

[0032] A plugging plate 5 is arranged on the side of the filter plate 4 away from the filter screen 3. Symmetric connecting plates 16 are fixedly connected to the middle of the side of the plugging plate 5 away from the filter plate 4. One end of the connecting plate 16 away from the plugging plate 5 is horizontally slidably connected to the inner cavity side wall of the housing 1. A plurality of through holes are uniformly opened on the side wall of the filter plate 4. A plurality of protrusions are fixedly connected to the side of the plugging plate 5 close to the filter plate 4. The size and position of the protrusions correspond to the through holes. Through the cooperation of the filter plate 4 and the filter screen 3, when filtering and treating sewage, the accumulation of sundries and the impact of water flow are avoided, which may cause the filter screen 3 to deform, resulting in the situation that the deformed filter screen 3 cannot fit with the side wall of the scraper 34 when the scraper 34 scrapes and cleans the sundries on the surface of the filter screen 3. The through holes opened on the filter plate 4 do not affect the flow of water while providing support for the filter screen 3.

[0033] In the middle of the side wall of the inner cavity of the installation cavity 20, far from the connecting plate 16, an electric retractable push rod 10 is connected in a transmission manner. The output end of the electric retractable push rod 10 is fixedly connected with a U-shaped plate 11. The U-shaped plate 11 is horizontally slidably connected with the side wall of the inner cavity of the installation cavity 20. A gear 14 is arranged between the U-shaped plate 11 and the connecting plate 16. The gear 14 is rotatably connected with the side wall of the inner cavity of the installation cavity 20 far from the scraper 34. Rack bars 15 are arranged at the upper and lower ends of the gear 14, and the two rack bars 15 are centrosymmetric about the central position of the gear 14. The centrosymmetric rack bars 15 are all engaged with the gear 14. One end of the lower rack bar 15 far from the gear 14 is fixedly connected with the lower end of the U-shaped plate 11, and one end of the upper rack bar 15 far from the gear 14 is fixedly connected with the upper end of the connecting plate 16. That is, when the electric retractable push rod 10 pushes the U-shaped plate 11 to horizontally approach the position where the filter plate 4 is located, it will synchronously drive the lower rack bar 15 to move, thereby driving the gear 14 to rotate, and then driving the upper rack bar 15 to move through the gear 14 to drive the blocking plate 5 to approach the position where the filter plate 4 is located, and blocking the through hole through the protrusion, so as to fill the gap between the filter screen 3 and the filter plate 4, thereby avoiding that in the process of scraping the filter screen 3 by the scraper 34, some soft objects enter the through hole through the gap of the filter screen 3 due to extrusion. For example, in the sewage generated by a farm, there are often poultry feathers and some feed residues. After being soaked in water, the texture of the feed residues becomes soft and fluffy. At this time, after the soaked feed residues are squeezed by the scraper 34, a part of them may enter the gap of the filter screen 3. At this time, through the blocking and support of the protrusion, this situation can be largely avoided, and at the same time, the feed residues are prevented from entering the through hole, so as to avoid the subsequent deterioration of the filtering effect.

[0034] Please refer to Figures 5-6, the guiding mechanism includes a guiding plate 17 which is horizontally and slidably connected to the side of the inner cavity of the installation cavity 20 away from the gear 14. One side of the guiding plate 17 close to the U-shaped plate 11 is elastically connected to the side of the inner cavity of the installation cavity 20 close to the electric retractable push rod 10 through symmetric springs. The outer wall of the U-shaped plate 11 is attached to the side close to the electric retractable push rod 10. That is, during the process of the electric retractable push rod 10 pushing the U-shaped plate 11 to move, it will drive the guiding plate 17 to synchronously approach the position where the connecting plate 16 is located and stop moving when the blocking plate 5 is attached to the filter plate 4. Two mutually parallel reset grooves 26 are provided on the side of the guiding plate 17 close to the scraping plate 34. Symmetric transition grooves 21 are provided on the sides of the reset grooves 26 far from the connecting plate 16 at both ends. Symmetric driven rods 35 are slidably connected to both sides of the scraping plate 34. The driven rods 35 are elastically connected to the side walls of the inner cavity of the scraping plate 34 through springs. That is, when the driven rods 35 are subjected to a force towards the center position of the scraping plate 34, the driven rods 35 will move a certain distance towards the center position of the scraping plate 34. The outer walls of the driven rods 35 are vertically and slidably connected to the side walls of the inner cavity of the housing 1. The ends of the driven rods 35 far from the scraping plate 34 extend into the inner cavity of the installation cavity 20 and are slidably connected to the transition grooves 21 and the reset grooves 26. When the protrusion is separated from the through hole, that is, when the electric retractable push rod 10 has not yet pushed the U-shaped plate 11 to move, at this time, the driven rods 35 are located at the connection between the lower end of the reset groove 26 and the transition groove 21. When the guiding plate 17 is pushed by the U-shaped plate 11, the driven rods 35 will move relatively towards the end of the transition groove 21 far from the reset groove 26. A number of guiding grooves 22 are provided on the side wall of the guiding plate 17. Balance grooves 25 are provided between adjacent guiding grooves 22. The end of the transition groove 21 far from the reset groove 26 is communicated with the guiding groove 22. When the blocking plate 5 is attached to the filter plate 4, at this time, the driven rods 35 move relatively to the connection between the transition groove 21 and the guiding groove 22. Among them, the guiding groove 22 is inclined towards the direction where the electric retractable push rod 10 is located, while the balance groove 25 is parallel to the transition groove 21 and is horizontal. The reset groove 26 is perpendicular to the transition groove 21. The lower end of the lowermost guiding groove 22 and the upper end of the uppermost guiding groove 22 are both connected to the transition groove 21.

[0035] A servo motor 12 is fixedly connected to the bottom of the inner cavity of the U-shaped plate 11. The output end of the servo motor 12 is fixedly connected to a push rod 13. During the process of the servo motor 12 driving the push rod 13 to rotate, the end of the push rod 13 far from the servo motor 12 will contact the side wall of the guide plate 17, thereby pushing the guide plate 17 to move horizontally in the direction of the connecting plate 16. After the push rod 13 separates from the side wall of the guide plate 17, at this time, under the elastic force of the spring, the guide plate 17 will move horizontally away from the position where the connecting plate 16 is located, so as to realize the horizontal reciprocating movement of the guide plate 17. When the guide plate 17 moves towards the connecting plate 16 under the push of the push rod 13, the driven rod 35 will relatively enter the guide groove 22 from the connection of the transition groove 21 and the guide groove 22, and enter the balance groove 25 through the guide groove 22, so as to realize the step-by-step upward movement of the scraper 34. A slant block 23 is fixedly connected to the connection of the upper end of the guide groove 22 and the balance groove 25. A first inclined surface 29 is provided on the side of the slant block 23 close to the guide groove 22. The end of the first inclined surface 29 close to the guide groove 22 is farther from the position where the scraper 34 is located than the end close to the balance groove 25. An arc surface is provided at the end of the driven rod 35 far from the scraper 34. When the driven rod 35 moves relatively in the inner cavity of the guide groove 22, the end of the driven rod 35 far from the scraper 34 will approach and contact the first inclined surface 29. At this time, the first inclined surface 29 will relatively apply a force to the driven rod 35 in the direction of the center position of the scraper 34, so that the driven rod 35 moves towards the inner cavity of the scraper 34, so as to cross the slant block 23. After the driven rod 35 moves relatively into the balance groove 25, the driven rod 35 will reset under the action of the elastic force. When the push rod 13 separates from the guide plate 17 and the guide plate 17 moves towards the direction of the U-shaped plate 11 under the action of the elastic force, the driven rod 35 will relatively move to the end of the inner cavity of the balance groove 25 far from the slant block 23, that is, the connection of the end of the balance groove 25 close to the reset groove 26 and the guide groove 22.

[0036] Please refer to Figures 7-8, a rotating plate 24 is rotatably connected to the connection between one end of the balance groove 25 close to the reset groove 26 and the guide groove 22. The upper end of the rotating plate 24 is rotatably connected to the lower part of the inner cavity of the guide groove 22 on the side close to the balance groove 25. The horizontal width of the rotating plate 24 is smaller than the horizontal width of the side wall of the inner cavity of the guide groove 22, and the horizontal width of the rotating plate 24 is larger than the horizontal width of the top end of the inclined block 23. One end of the rotating plate 24 close to the balance groove 25 is fixedly connected with a guide rod 27. An arc groove 28 for cooperating with the guide rod 27 is formed in the side wall of the inner cavity of the guide groove 22 away from the scraper 34. The guide rod 27 is slidably connected in the arc groove 28, and the side wall of the guide rod 27 is elastically connected with the top of the inner cavity of the arc groove 28 through an arc spring. When the driven rod 35 moves towards the end of the inner cavity of the balance groove 25 away from the inclined block 23, the outer wall of the driven rod 35 will contact the lower end face of the rotating plate 24. At this time, the driven rod 35 will lift the rotating plate 24, so that the rotating plate 24 rotates counterclockwise upward. At this time, the rotating plate 24 will drive the guide rod 27 to move along the arc groove 28, and the arc spring is compressed. After the driven rod 35 is separated from the rotating plate 24, the rotating plate 24 rotates clockwise downward and returns to the initial position under the cooperation of the arc spring and the guide rod 27. When the push rod 13 pushes the guide plate 17 to move again, at this time, the driven rod 35 will contact the upper end face of the rotating plate 24. Since the rotating plate 24 cannot rotate clockwise downward anymore, at this time, the rotating plate 24 will provide support for the driven rod 35, so that the driven rod 35 enters the guide groove 22, and then drives the scraper 34 to move upward again. That is, during the continuous horizontal reciprocating movement of the guide plate 17, the scraper 34 will be continuously driven to move upward, so as to gradually scrape off the sundries on the surface of the filter screen 3.

[0037] Please refer to Figures 9-11, on one side of the scraper 34 close to the filter screen 3, a first bin 36 is provided. The first bin 36 is attached to the surface of the filter screen 3. At one end of the first bin 36 away from the filter screen 3, a second bin 38 is provided. At one end of the second bin 38 away from the first bin 36, a third bin 39 is provided. Among them, the first bin 36 and the second bin 38 have the same horizontal width. The horizontal width of the second bin 38 is greater than the horizontal width of the third bin 39. The vertical height of the third bin 39 is greater than the vertical height of the second bin 38. The vertical height of the first bin 36 is the same as that of the third bin 39. On one side of the inner cavity of the first bin 36 close to the second bin 38, a partition net 37 is fixedly connected. On the side of the partition net 37 away from the first bin 36, a moving plate 41 is attached. In the middle of one end of the moving plate 41 away from the partition net 37, a connecting rod 40 is rotatably connected. In the middle of one end of the connecting rod 40 away from the partition net 37, a support rod 30 is fixedly connected. On one side of the moving plate 41 away from the partition net 37, between the upper and lower sides of the connecting rod 40, they are elastically connected by symmetric springs. Through the symmetric elasticity, the moving plate 41 and the connecting rod 40 are kept in a vertical state. The height of the moving plate 41 is the same as the vertical height of the inner cavity of the second bin 38. When the connecting rod 40 drives the moving plate 41 to move horizontally away from the first bin 36, at this time, a negative pressure will be formed in the inner cavity of the first bin 36. Thus, some sundries stuck in the gaps of the filter screen 3 will be sucked into the first bin 36. On the top of the inner cavity of the first bin 36, symmetric storage cavities 43 are provided. The horizontal width of the storage cavities 43 is smaller than that of the second bin 38. In the inner cavity of the storage cavities 43, an inclined plate 42 is vertically slidably connected. Between the top of the inclined plate 42 and the top of the inner cavity of the storage cavities 43, they are elastically connected by a spring. And at the lower end of the inclined plate 42, a second inclined surface 44 is provided. The plane where one end of the second inclined surface 44 close to the first bin 36 is located is higher than the plane where one end of the second inclined surface 44 close to the third bin 39 is located. During the process of the moving plate 41 moving away from the first bin 36, the moving plate 41 will contact the second inclined surface 44 and thus upwardly squeeze the inclined plate 42. Thus, the inclined plate 42 contracts into the inner cavity of the storage cavities 43 and will not affect the movement of the moving plate 41. Until the moving plate 41 moves into the inner cavity of the third bin 39, at this time, the inclined plate 42 resets under the action of the elastic force. At this time, when the moving plate 41 approaches the first bin 36, since the plane where one end of the second inclined surface 44 close to the third bin 39 is located is lower than the plane where the top end of the moving plate 41 is located, the inclined plate 42 will relatively push the moving plate 41 to rotate. Thus, the moving plate 41 enters the inner cavity of the second bin 38 again in an inclined state. At this time, there are gaps between both ends of the moving plate 41 and the inner cavity of the second bin 38. So during the process of the moving plate 41 approaching the first bin 36, no air flow will be generated to affect the sundries entering the inner cavity of the first bin 36. And because the second inclined surface 44 is an inclined surface, during the process of the moving plate 41 approaching the first bin 36, the moving plate 41 will gradually rotate back to the vertical state under the action of the elastic force. When the sealing plate 5 and the filter plate 4 are in a separated state, at this time, the moving plate 41 is located on the side of the inner cavity of the third bin 39 away from the first bin 36. When the sealing plate 5 is attached to the filter plate 4,At this time, the side wall of the moving plate 41 is attached to the side of the second inclined surface 44 close to the third bin 39. When the push rod 13 pushes the guide plate 17 close to the connecting plate 16, the driven rod 35 enters the guide groove 22 at this time and the moving plate 41 will approach the first bin 36. When the guide plate 17 returns to its original position due to elastic force, the driven rod 35 moves in the balance groove 25 towards the reset groove 26 and the moving plate 41 moves away from the first bin 36. That is, during the horizontal reciprocating movement of the guide plate 17, it drives the scraper 34 to move vertically upward to scrape the debris on the surface of the filter screen 3. At the same time, when the scraper 34 is in a static state, by driving the moving plate 41 away from the first bin 36, some debris stuck in the gaps of the filter screen 3 is sucked into the first bin 36 to further clean the filter screen 3.

[0038] A roller 31 is rotatably connected to the outer wall of the end of the support rod 30 away from the connecting rod 40. At both ends of the side of the symmetric guide plate 17 away from the filter plate 4, extension plates 18 are fixedly connected. In the middle between the symmetric extension plates 18, a push plate 19 is fixedly connected. A chute 33 for the use of the support rod 30 is opened in the middle of the push plate 19. The outer wall of the support rod 30 is slidably matched with the chute 33. A wheel groove 32 is opened on the side of the chute 33 away from the filter plate 4. The roller 31 is slidably connected to the inner cavity of the wheel groove 32. The horizontal width of the roller 31 is greater than that of the chute 33. During the reciprocating movement of the guide plate 17, it will drive the extension plate 18 to move synchronously, so as to drive the moving plate 41 to move synchronously through the cooperation of the push plate 19 and the support rod 30. Through the cooperation of the roller 31 and the wheel groove 32, the push plate 19 can apply a horizontal force to the support rod 30 without affecting the upward movement of the support rod 30 along with the scraper 34. When the driven rod 35 moves to the upper transition groove 21, if the U-shaped plate 11 is driven to reset by the electric retractable push rod 10 at this time, then the guide plate 17 will lose the limit of the U-shaped plate 11, and thus return to the initial position under the action of elastic force, so that the driven rod 35 relatively moves into the reset groove 26 and moves to the upper end surface of the partition plate 45 under the self-weight of the scraper 34. A groove for the use of the scraper 34 is opened at the upper end of the partition plate 45. When the lower end surface of the scraper 34 is attached, the upper end surface of the scraper 34 is attached to the upper end surface of the partition plate 45. After the sewage filtration is completed, the guide plate 17 can be driven to drive the scraper 34 to move, so as to clean the filter screen 3.

[0039] A symmetric cover plate 2 is fixedly connected to the upper end of the housing 1. A water inlet is provided on one side of the upper end of the cover plate 2 close to the push plate 19. The plane where the upper end of the cover plate 2 is located is lower than the plane where the upper end surface of the guide plate 17 is located. That is, when the driven rod 35 is located in the inner cavity of the uppermost transition groove 21, at this time, the upper end surface of the scraper 34 is higher than the upper end surface of the cover plate 2, so as to facilitate the cleaning of the debris in the scraper 34 and the first bin 36. At this time, it can be cleaned manually or by electric push in cooperation with the push plate. A plurality of water passing holes 8 are opened on one side of the upper end of the partition plate 45 far from the push plate 19. A mixing chamber 7 is provided below the partition plate 45, and a filtering chamber 6 is provided above the partition plate 45. A stirring rod 9 is rotatably connected to the middle of the inner cavity of the mixing chamber 7. By driving the stirring rod 9 to rotate by a motor, the filtered sewage can be stirred and mixed. A medicine adding pipe is provided on one side of the mixing chamber 7. The liquid medicine is added into the inner cavity of the mixing chamber 7 through the medicine adding pipe and is fully mixed by the stirring rod 9. A water outlet is provided on the side of the inner cavity of the mixing chamber 7 far from the medicine adding pipe.

Claims

1. A sewage treatment device for a breeding farm, comprising a housing, characterized in that, A partition plate is fixedly connected to the middle of the inner cavity of the shell, a filter plate is fixedly connected to the middle of the upper end of the partition plate, a filter screen is fixedly connected to one side of the filter plate, a scraper for cleaning the filter screen is arranged on the upper end of the partition plate, an installation cavity is opened on the upper side wall of the shell, a guide mechanism for driving the scraper to move is arranged in the inner cavity of the installation cavity, and when the output end of the guide mechanism moves horizontally toward the direction of the filter plate, it will drive the scraper to move vertically upward.

2. The sewage treatment device for a farm according to claim 1, characterized in that A sealing plate is provided on the side of the filter plate away from the filter screen, and a symmetrical connecting plate is fixedly connected to the middle part of the side of the sealing plate away from the filter plate, and one end of the connecting plate away from the sealing plate is horizontally slidably connected to the inner cavity side wall of the shell, and a plurality of through holes are evenly opened on the side wall of the filter plate, and a plurality of protrusions are fixedly connected to the side of the sealing plate close to the filter plate, and the size and position of the protrusions correspond to the through holes, and an electric retraction push rod is transmission-connected to the middle part of the inner cavity side wall of the installation cavity away from the connecting plate, and the output end of the electric retraction push rod is fixedly connected to a U-shaped plate, and the U-shaped plate is horizontally slidably connected to the inner cavity side wall of the installation cavity, and a servo motor is fixedly connected to the inner cavity bottom of the U-shaped plate, and a push rod is fixedly connected to the output end of the servo motor.

3. The sewage treatment device for a farm according to claim 2, characterized in that, A gear is arranged between the U-shaped plate and the connecting plate, and the gear is rotatably connected to the side wall of the inner cavity of the installation cavity away from the scraper plate. Racks are arranged at the upper and lower ends of the gear, and the centrally symmetrical racks are meshed with the gears. The end of the rack located at the bottom away from the gear is fixedly connected to the lower end of the U-shaped plate, and the end of the rack located at the top away from the gear is fixedly connected to the upper end of the connecting plate.

4. A sewage treatment device for a farm according to claim 3, characterized in that, The guide mechanism includes a guide plate, which is horizontally slidably connected to the side of the inner cavity of the installation cavity away from the gear, and two reset grooves parallel to each other are provided on the side of the guide plate close to the scraper, and symmetrical transition grooves are provided on both ends of the reset grooves away from the side of the connecting plate, and symmetrical driven rods are slidably connected on both sides of the scraper, and the outer wall of the driven rod is vertically slidably connected to the inner cavity side wall of the shell, and the end of the driven rod away from the scraper extends into the inner cavity of the installation cavity and is slidably connected to the transition groove and the reset groove, and an arc surface is provided on the end of the driven rod away from the scraper, and a plurality of guide grooves are provided on the side wall of the guide plate, and a balancing groove is provided between adjacent guide grooves.

5. The sewage treatment device for a breeding farm according to claim 4, wherein, An inclined block is fixedly connected to the connection between the upper end of the guide groove and the balancing groove. A first inclined surface is provided on the side of the inclined block close to the guide groove. The end of the first inclined surface close to the guide groove is farther away from the position of the scraper than the end close to the balancing groove. A rotating plate is rotatably connected to the connection between the end of the balancing groove close to the reset groove and the guide groove.

6. The sewage treatment device for a farm according to claim 5, characterized in that, The upper end of the rotating plate is rotatably connected to the lower part of the inner cavity of the guide groove near the side of the balancing groove. The horizontal width of the rotating plate is smaller than the horizontal width of the side wall of the inner cavity of the guide groove, and the horizontal width of the rotating plate is larger than the horizontal width of the top of the inclined block. The end of the rotating plate near the balancing groove is fixedly connected with a guide rod, and the side wall of the inner cavity of the guide groove away from the scraper is provided with an arc groove used to cooperate with the guide rod, and the guide rod is slidably connected in the arc groove.

7. A sewage treatment device for a farm according to claim 1, wherein, One side of the scraper close to the filter screen is provided with a first bin, one end of the first bin away from the filter screen is provided with a second bin, and one end of the second bin away from the first bin is provided with a third bin. The first bin and the second bin have the same horizontal width. The horizontal width of the second bin is greater than that of the third bin. The vertical height of the third bin is greater than that of the second bin. The vertical height of the first bin is the same as that of the third bin. One side of the inner cavity of the first bin close to the second bin is fixedly connected with a partition net, and a moving plate is arranged in a fitting manner on the side of the partition net away from the first bin.

8. The sewage treatment device for a farm according to claim 7, characterized in that, The middle part of one end of the moving plate away from the partition net is rotatably connected with a connecting rod, and the middle part of one end of the connecting rod away from the partition net is fixedly connected with a support rod. The height of the moving plate is the same as the vertical height of the inner cavity of the second bin. Symmetric receiving cavities are arranged at the top of the inner cavity of the first bin. The horizontal width of the receiving cavity is smaller than that of the second bin. An inclined plate is vertically slidably connected in the inner cavity of the receiving cavity, and a second inclined surface is arranged at the lower end of the inclined plate.

9. A sewage treatment device for a breeding farm according to claim 8, characterized in that, One end of the support rod away from the connecting rod is rotatably connected with a roller on the outer wall. Both ends of the symmetric guide plates away from the filter plate are fixedly connected with extension plates. A push plate is fixedly connected in the middle between the symmetric extension plates. A chute for cooperating with the support rod is arranged in the middle of the push plate. The outer wall of the support rod is slidably matched with the chute. A wheel groove is arranged on the side of the chute away from the filter plate. The roller is slidably connected in the inner cavity of the wheel groove. The horizontal width of the roller is greater than that of the chute.

10. A sewage treatment device for a breeding farm according to claim 9, characterized in that, Symmetric cover plates are fixedly connected to the upper end of the housing. The plane where the upper ends of the cover plates are located is lower than the plane where the upper end surfaces of the guide plates are located. A plurality of water passing holes are arranged on one side of the upper end of the partition plate away from the push plate. A mixing cavity is arranged below the partition plate, and a filtering cavity is arranged above the partition plate. A stirring rod is rotatably connected in the middle of the inner cavity of the mixing cavity.

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