Sewage treatment device and method for cattle slaughter house

Abstract

The invention provides a cattle slaughter house sewage treatment device and method, and relates to the technical field of sewage treatment.The cattle slaughter house sewage treatment device comprises a screening box, a screening assembly is arranged in the screening box and comprises an annular frame, the upper end of the annular frame is fixed to the top of the screening box, and a bottom plate is fixed to the lower end of the annular frame; compared with the prior art, waste water is fed into the annular frame, hair, residues and the like attached to the inner wall of the annular frame are rotationally cleaned away by rotating a scraper blade, screening and filtering of impurities in the waste water are not affected, manual cleaning is not needed, and the waste water recycling device has the advantages that the waste water recycling device is simple in structure, convenient to use and high in practicability. According to the device, minced meat, hair and the like are fed into the collecting box and then discharged through the discharging cylinder, the time of shutdown for blockage cleaning can be shortened, the translation scraper blade in the settling box cleans sediments on the sieve plates to the two sides in cooperation with driving of the driving assembly, and therefore the influence on the water passing rate of the middle sieve plate is avoided, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sewage treatment device and a treatment method for a cattle slaughterhouse. Background Art

[0002] A slaughterhouse is a place where large livestock such as cattle, sheep, and pigs are slaughtered. It has a series of supporting facilities to process, clean, dismember, sort, inspect, freeze, and refrigerate the slaughtered animals for future use. A large amount of water is needed for cleaning and flushing during the slaughtering process, which will produce a lot of slaughter wastewater, so the slaughterhouse wastewater treatment equipment is needed.

[0003] Common sewage treatment equipment treats slaughterhouse wastewater through filtering, sedimentation, degreasing, odor purification and disinfection. For cattle slaughterhouses, the wastewater will be mixed with a lot of minced meat, broken bones and hair. Conventional sieve plates can directly separate them from the wastewater, but a long time will lead to a decrease in the screening efficiency of the sieve plate and the efficiency of wastewater passing, resulting in the overall efficiency of wastewater treatment being affected. Especially for hair, it has strong adsorption after being wetted by water and is easily adsorbed on the sieve plate of the treatment equipment. It can only be maintained by manually cleaning the inside of the equipment and removing the blocked hair to maintain a normal water flow rate, so it is relatively inconvenient. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a cattle slaughterhouse sewage treatment device and a treatment method to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The wastewater is sent into the inside of the ring frame, and the hair and residues adhering to the inner wall of the ring frame are cleaned by rotating the scraper, which will not affect the screening and filtration of impurities in the wastewater and does not require manual cleaning. Minced meat and hair are sent into a collection box and then sent out through a discharge tube, which can reduce the time of stopping to clean the blockage. In conjunction with the drive of the drive component, the translational scraper in the sedimentation box cleans the sediment on the sieve plate to both sides, thereby avoiding affecting the water flow rate of the middle sieve plate and improving the efficiency of wastewater treatment.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: a sewage treatment device for a cattle slaughterhouse, comprising a screening box, a screening assembly is arranged inside the screening box, the screening assembly comprises a ring frame, the upper end of the ring frame is fixed to the top of the screening box, and the lower end of the ring frame is fixed with a bottom plate, a gap is arranged between the ring frame and the inner wall of the screening box, a collecting box is fixed at the bottom of the ring frame, and a leakage groove is opened on the lateral surface of the ring frame, a water inlet is arranged at the top of the screening box, and the water inlet is communicated with the inside of the ring frame, a sedimentation box is arranged on one side of the screening box, and a sieve plate is fixed inside the sedimentation box, side boxes are slidably connected with the two sides of the sieve plate, the side of the side box is opened with the same leakage groove as the sieve plate, the opening of the side box is flush with the sieve plate, a driving assembly is arranged on the top of the screening box and the sedimentation box, and the driving assembly comprises a shaft rod, a shaft rod is rotatably installed inside the screening box through a bearing, and the shaft rod passes through the ring frame and the collecting box, a translation scraper is slidably connected to the surface of the sieve plate, and the driving assembly drives the translation scraper to reciprocate horizontally.

[0006] Furthermore, the screening assembly also includes a second rotating scraper, four groups of second rotating scrapers are symmetrically arranged inside the ring frame, and the second rotating scrapers are fixed to the shaft rod, the second rotating scraper is in sliding contact with the inner wall of the ring frame and the bottom plate, and a slag discharge port is provided on the surface of the bottom plate located between the two groups of second rotating scrapers, and the slag discharge port is connected to the inside of the collecting box, and a conical inclined surface is provided on the surface of the collecting box.

[0007] Furthermore, a delivery outlet is provided at the bottom of the collection box, and a discharge cylinder is fixed at the bottom of the delivery outlet, the other end of the discharge cylinder passes through the bottom of the screening box, and four groups of first rotating scrapers are equidistantly fixed on the shaft rod corresponding to the inclined surface in the collection box, and the first rotating scrapers are in sliding contact with the inclined surface.

[0008] Furthermore, a driving gear is rotatably sleeved on the surface of the discharge cylinder passing through the screening box through a bearing, a fixing frame is fixed to the outer end of the shaft rod passing through the discharge cylinder, and the other end of the fixing frame is fixedly connected to the surface of the driving gear, a plurality of driven gears are equidistantly rotatably installed on the bottom of the screening box through a rotating shaft, and the driving gear is meshed and connected with the driven gear, a stirring frame is rotatably installed on the inner wall of the bottom of the screening box corresponding to the position of the driven gear through a bearing, and the stirring frame is fixedly connected to the driven gear.

[0009] Furthermore, the driving assembly also includes a mounting frame, the top of the screening box is fixed with a mounting frame, and a motor is fixed on the surface of the mounting frame, a turntable is fixed to the output end of the motor, and an eccentric side of the bottom of the turntable is rotatably connected to a first connecting rod via a rotating shaft, the other end of the first connecting rod is rotatably connected to a second connecting rod via a rotating shaft, a vertical rod is fixed to the top of the translational scraper, and the other end of the second connecting rod is rotatably connected to the vertical rod via a rotating shaft.

[0010] Furthermore, a transmission belt is installed at the output end of the motor, and a pulley on the other side of the transmission belt is fixed on the surface of the shaft rod passing through the screening box.

[0011] Furthermore, sealing plates are installed on the outer ends of the boxes on both sides of the sedimentation box, a discharge pipe is provided on the outer surface of the sedimentation box at the bottom of the screen plate, an addition pipe is provided on one side of the top of the screening box, a movable groove is provided on the top of the sedimentation box, and the top of the translational scraper slides along the movable groove.

[0012] Furthermore, a toothed plate is fixed on the top of the connecting block, a gear is fixed on the surface of the toothed plate of the driving shaft of the pressure roller, and the gear is meshingly connected with the toothed plate.

[0013] A method for treating wastewater from a cattle slaughterhouse, the wastewater treatment method comprising the following steps:

[0014] 1) Screening: wastewater is sent into the ring frame of the screening box through the water inlet, and the driving component drives the shaft rod in the screening box to rotate. When the surface of the ring frame corresponding to the water inlet is blocked by hair, the second rotating scraper moves along the inside of the ring frame until it moves to the position of the slag discharge port and falls into the collection box, and pushes part of the wastewater into other layers. The wastewater is screened and sent out through the ring frames of other layers that are not blocked by hair, and enters the discharge cylinder through the delivery port;

[0015] 2) Flocculation and mixing: Flocculants can be added into the screening box through the adding tube to react with the wastewater. The bottom of the shaft is connected to the driving gear through the fixing frame. The rotation of the shaft drives the driving gear to rotate and meshes with the four driven gears to drive the four sets of stirring frames to rotate at the bottom of the screening box, so that the flocculants and wastewater are mixed more fully;

[0016] 3) Sedimentation: The wastewater is sent into the sedimentation box through the suction pump. Through the rotation of the turntable and the reciprocating translation movement of the second connecting rod pulled by the first connecting rod, the translation scraper is driven by the vertical rod to translate along the surface of the screen plate, and the sediment is pushed into the boxes on both sides to avoid accumulation on the surface of the screen plate. The impurities screened by the screen plate are sent to the inside of the side box;

[0017] 4) Delivery: The sediment is continuously pushed into the two side boxes to avoid excessive sediment accumulation on the surface of the screen plate. By manually opening the sealing plate, the side box can be taken out from the sedimentation box, and the sediment can be cleaned. The wastewater after screening and sedimentation is delivered through the discharge pipe for processing in the next process.

[0018] Furthermore, in the step of sending out the impurities in the collection box, a first rotating scraper that fits the inclined surface is set on the shaft inside the collection box. The first rotating scraper pushes the impurities and hair on the inclined surface to move and gradually fall into the position of the delivery port and enter the discharge cylinder.

[0019] Furthermore, in the step of moving the translation scraper, a moving groove is provided on the top of the sedimentation box, and the vertical rod of the driving assembly is connected to the translation scraper through the moving groove and the vertical rod, so as to guide and limit the moving direction of the translation scraper so that it can keep reciprocating on the surface of the screen plate.

[0020] Beneficial effects of the present invention:

[0021] 1. In the present invention, impurities and hair in the sliding frame are moved along the inside of the ring frame by the rotation of the second rotating scraper until they move to the position of the slag discharge port and fall into the inside of the collection box. They are guided by the inclined surface of the collection box and enter the discharge tube from the delivery port, and then are delivered through the bottom of the discharge tube. During this process, the first rotating scraper rotates counterclockwise, and the slag discharge port is the farthest end of the water inlet. When the surface of the ring frame corresponding to the water inlet is blocked by hair, the first rotating scraper cleans the hair and pushes part of the waste water into other layers, and the waste water is screened and delivered through the ring frames of other layers that are not blocked by hair. The first rotating scraper also pushes the impurities and hair on the inclined surface to move.

[0022] 2. The present invention enters the discharge tube through the delivery port and is delivered from the discharge tube. The bottom of the shaft is connected to the driving gear through a fixed frame. The rotation of the shaft drives the driving gear to rotate and meshes with four driven gears to drive four groups of stirring frames to rotate at the bottom of the screening box, so that the flocculant and wastewater are mixed more fully.

[0023] 3. The present invention drives the first rotating scraper, the second rotating scraper and the stirring frame to rotate through the shaft rod, thereby achieving scraping and cleaning of the wall inside the screening box and uniform mixing of wastewater and flocculant. The turntable rotates and the first connecting rod pulls the second connecting rod to move back and forth, and the vertical rod drives the translational scraper to translate along the surface of the screen plate, pushing the sediment into the boxes on both sides to avoid accumulation on the surface of the screen plate.

[0024] 4. The present invention can add flocculants into the screening box through the adding tube to react with the wastewater, cooperate with the stirring plate of the stirring frame to accelerate the mixing effect, and then pump it into the sedimentation box through the suction pump for sedimentation and screening, and send the wastewater after screening and sedimentation through the discharge pipe for processing in the next process. Through the setting of the moving groove, the moving direction of the translation scraper is guided and limited to keep it moving back and forth on the surface of the screen plate, and the sediment is continuously pushed into the two side boxes to avoid excessive sediment accumulation on the surface of the screen plate. By manually opening the sealing plate, the side box can be taken out from the sedimentation box and the sediment can be cleaned. Under the premise of not affecting the water flow rate of the screen plate, the number of times the side box is manually cleaned can be reduced.

[0025] 5. Compared with the prior art, the wastewater is sent into the ring frame, and the hair and residues adhering to the inner wall of the ring frame are cleaned by rotating the scraper, which will not affect the screening and filtration of impurities in the wastewater and does not require manual cleaning. Minced meat and hair are sent into the collection box and then sent out through the discharge tube, which can reduce the time of stopping to clean the blockage. In conjunction with the drive of the drive assembly, the translational scraper in the sedimentation box cleans the sediment on the screen plate to both sides, thereby avoiding affecting the water flow rate of the middle screen plate and improving the efficiency of wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a sewage treatment device for a cattle slaughterhouse according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a driving component of a sewage treatment device for a cattle slaughterhouse according to the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of a screening box and a sedimentation box of a wastewater treatment device for a cattle slaughterhouse according to the present invention;

[0029] Figure 4 It is a schematic diagram of the internal structure of a collection box of a wastewater treatment device for a cattle slaughterhouse according to the present invention;

[0030] Figure 5 It is a schematic diagram of the internal structure of a ring frame of a sewage treatment device for a cattle slaughterhouse according to the present invention;

[0031] Figure 6 This is a schematic diagram of the bottom structure of a screening box of a wastewater treatment device for a cattle slaughterhouse according to the present invention;

[0032] Figure 7 The present invention is a schematic diagram of the upper structure of a sedimentation tank of a sewage treatment device for a cattle slaughterhouse.

[0033] In the figure: 1. screening box; 11. water inlet; 12. adding pipe; 2. sedimentation box; 21. discharge pipe; 22. sealing plate; 23. moving trough; 24. side box; 25. sieve plate; 26. translation scraper; 3. driving assembly; 31. mounting frame; 32. motor; 33. transmission belt; 34. shaft; 35. turntable; 36. first connecting rod; 37. second connecting rod; 38. vertical rod; 4. screening assembly; 41. ring frame; 42. collecting box; 43. discharge cylinder; 44. stirring frame; 45. inclined plane; 46. first rotating scraper; 47. delivery port; 48. bottom plate; 49. second rotating scraper; 410. slag discharge port; 411. driving gear; 412. fixing frame; 413. driven gear. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] See also Figures 1 to 7 The present invention provides a technical solution: a method for treating wastewater from a cattle slaughterhouse, the method comprising the following steps:

[0036] 1) Screening: wastewater is sent into the ring frame 41 of the screening box 1 through the water inlet 11, and the driving assembly 3 drives the shaft 34 in the screening box 1 to rotate. When the surface of the ring frame 41 corresponding to the water inlet 11 is blocked by hair, the second rotating scraper 49 rotates and moves along the inside of the ring frame 41 until it moves to the position of the slag discharge port 410 and falls into the collection box 42, and pushes part of the wastewater into other layers. The wastewater is screened and sent out through the ring frame 41 of other layers that is not blocked by hair, and enters the discharge tube 43 through the delivery port 47;

[0037] 2) Flocculation and mixing: Flocculant can be added into the screening box 1 through the adding pipe 12 to react with the wastewater. The bottom of the shaft 34 is connected to the driving gear 411 through the fixing frame 412. The rotation of the shaft 34 drives the driving gear 411 to rotate, and meshes with the four driven gears 413 to drive the four sets of stirring frames 44 to rotate at the bottom of the screening box 1, so that the flocculant and the wastewater are mixed more fully;

[0038] 3) Sedimentation: The wastewater is sent into the sedimentation tank 2 by a suction pump. The rotary plate 35 rotates and the first connecting rod 36 pulls the second connecting rod 37 to move back and forth. The vertical rod 38 drives the translation scraper 26 to translate along the surface of the sieve plate 25, pushing the sediment into the two side boxes 24 to avoid accumulation on the surface of the sieve plate 25. The impurities screened by the sieve plate 25 are sent to the inside of the side box 24;

[0039] 4) Delivery: The sediment is continuously pushed into the two side boxes 24 to avoid excessive sediment accumulation on the surface of the screen plate 25. By manually opening the sealing plate 22, the side box 24 can be taken out from the sedimentation box 2, and the sediment is cleaned. The wastewater after screening and sedimentation is delivered through the discharge pipe 21 for processing in the next process.

[0040] A sewage treatment device for a cattle slaughterhouse comprises a screening box 1, wherein a screening assembly 4 is arranged inside the screening box 1, wherein the screening assembly 4 comprises a ring frame 41, wherein the upper end of the ring frame 41 is fixed to the top of the screening box 1, and a bottom plate 48 is fixed to the lower end of the ring frame 41, and a gap is arranged between the ring frame 41 and the inner wall of the screening box 1, a collecting box 42 is fixed to the bottom of the ring frame 41, and a leakage groove is provided on the lateral surface of the ring frame 41, a water inlet 11 is arranged on the top of the screening box 1, and the water inlet 11 is communicated with the inside of the ring frame 41, a sedimentation box 2 is arranged on one side of the screening box 1, and a sieve plate 25 is fixed inside the sedimentation box 2, and side boxes 24 are slidably connected to the sides of the sieve plate 25, and the side of the side box 24 is provided with a leakage groove identical to the sieve plate 25, and the opening of the side box 24 is flush with the sieve plate 25, and the sieve A driving assembly 3 is provided on the top of the selection box 1 and the sedimentation box 2, and the driving assembly 3 includes a shaft 34. The shaft 34 is rotatably installed inside the screening box 1 through a bearing, and the shaft 34 passes through the ring frame 41 and the collecting box 42. A translation scraper 26 is slidably connected to the surface of the screen plate 25, and the driving assembly 3 drives the translation scraper 26 to reciprocate horizontally. The screening box 1 and the sedimentation box 2 are connected by a pipeline and a suction pump. The wastewater is sent into the ring frame 41 of the screening box 1 through the water inlet 11, and the impurities and hair in the wastewater are screened through the leakage groove of the ring frame 41. The wastewater falls into the lower layer and mixes with the flocculant. Then, the wastewater reacts with the flocculant and is sent to the sedimentation box 2 through the suction pump. The impurities screened by the screen plate 25 are sent to the inside of the side box 24, and the wastewater is sent out from the sedimentation box 2 for the next stage of treatment.

[0041] In this embodiment, the screening assembly 4 also includes a second rotating scraper 49, four groups of second rotating scrapers 49 are symmetrically arranged inside the ring frame 41, and the second rotating scraper 49 is fixed to the shaft 34, and the second rotating scraper 49 is in sliding contact with the inner wall of the ring frame 41 and the bottom plate 48, and a slag discharge port 410 is opened on the surface of the bottom plate 48 located between the two groups of second rotating scrapers 49, and the slag discharge port 410 is connected to the inside of the collection box 42, and a conical inclined surface 45 is arranged on the surface of the collection box 42, and a delivery port 47 is opened at the bottom of the collection box 42, and a discharge cylinder 43 is fixed to the bottom of the delivery port 47, and the discharge cylinder The other end of 43 passes through the bottom of the screening box 1, and the shaft rod 34 is equidistantly fixed with four groups of first rotating scrapers 46 at positions corresponding to the inclined surface 45 in the collecting box 42, and the first rotating scrapers 46 are in sliding contact with the inclined surface 45. A driving gear 411 is rotatably sleeved on the surface of the discharge tube 43 passing through the screening box 1 through a bearing, and a fixing frame 412 is fixed to the outer end of the shaft rod 34 passing through the discharge tube 43, and the other end of the fixing frame 412 is fixedly connected to the surface of the driving gear 411. A plurality of driven gears 413 are equidistantly installed on the bottom of the screening box 1 through a rotating shaft, and the driving gear 411 is meshed and connected with the driven gear 413. The inner wall at the bottom of the screening box 1 is rotatably mounted with a stirring frame 44 at a position corresponding to the driven gear 413 through a bearing, and the stirring frame 44 is fixedly connected to the driven gear 413. The impurities and hair in the sliding frame are moved along the inside of the ring frame 41 by the rotation of the second rotating scraper 49 until they move to the position of the slag discharge port 410 and fall into the collecting box 42. They are guided by the inclined surface 45 of the collecting box 42 and enter the discharge tube 43 from the delivery port 47, and are delivered through the bottom of the discharge tube 43. In this process, the first rotating scraper 46 rotates counterclockwise. The slag discharge port 410 is the farthest end of the water inlet 11, and the surface of the ring frame 41 corresponding to the water inlet 11 is When the surface is blocked by hair, the first rotating scraper 46 cleans the hair and pushes part of the wastewater into other layers, and screens and sends out the wastewater through the ring frame 41 of other layers that is not blocked by hair. The first rotating scraper 46 also pushes the impurities and hair on the inclined surface 45 to move, enter the discharge tube 43 through the delivery port 47, and then send it out from the discharge tube 43. The bottom of the shaft rod 34 is connected to the driving gear 411 through the fixing frame 412. The rotation of the shaft rod 34 drives the driving gear 411 to rotate, and meshes with the four driven gears 413 for transmission, driving the four sets of stirring frames 44 to rotate at the bottom of the screening box 1, so that the flocculant and wastewater are mixed more fully.

[0042] In this embodiment, the driving assembly 3 also includes a mounting frame 31, the mounting frame 31 is fixed on the top of the screening box 1, and a motor 32 is fixed on the surface of the mounting frame 31, a turntable 35 is fixed on the output end of the motor 32, and the eccentric side of the bottom of the turntable 35 is rotatably connected to a first connecting rod 36 through a rotating shaft, and the other end of the first connecting rod 36 is rotatably connected to a second connecting rod 37 through a rotating shaft, a vertical rod 38 is fixed on the top of the translation scraper 26, and the other end of the second connecting rod 37 is rotatably connected to the vertical rod 38 through a rotating shaft, and a transmission belt 3 is installed on the output end of the motor 32. 3, and the pulley on the other side of the transmission belt 33 is fixed on the surface of the shaft 34 passing through the screening box 1, the motor 32 drives the shaft 34 to rotate through the transmission belt 33, and the shaft 34 drives the first rotating scraper 46, the second rotating scraper 49, and the stirring frame to rotate, so as to realize the wall scraping cleaning inside the screening box 1 and the uniform mixing of wastewater and flocculant, and the rotation of the turntable 35 and the first connecting rod 36 pull the second connecting rod 37 to move back and forth, and the vertical rod 38 drives the translation scraper 26 to translate along the surface of the screen plate 25, so as to push the sediment into the boxes 24 on both sides to avoid accumulation on the surface of the screen plate 25.

[0043] In this embodiment, the outer ends of the boxes 24 on both sides of the sedimentation box 2 are sealed and installed with sealing plates 22. The outer surface of the sedimentation box 2 located at the bottom of the screen plate 25 is provided with a discharge pipe 21. The top side of the screening box 1 is provided with an addition pipe 12. The top of the sedimentation box 2 is provided with a moving groove 23, and the top of the translation scraper 26 slides along the moving groove 23. The flocculant can be added to the screening box 1 through the addition pipe 12 to react with the wastewater, and the mixing effect is accelerated by the stirring of the stirring frame 44. Then, the wastewater is pumped into the sedimentation box 2 through a suction pump for sedimentation and screening. The wastewater after screening and sedimentation is sent out through the discharge pipe 21 for processing in the next process. The moving direction of the translation scraper 26 is guided and limited by the setting of the moving groove 23, so that it can keep moving back and forth on the surface of the sieve plate 25, and the sediment is continuously pushed into the two side boxes 24 to avoid excessive sediment accumulation on the surface of the sieve plate 25. By manually opening the sealing plate 22, the side box 24 can be taken out from the inside of the sedimentation box 2 and the sediment can be cleaned. Under the premise of not affecting the water flow rate of the sieve plate 25, the number of times the side box 24 is manually cleaned can be reduced.

[0044] When the device is used, the screening box 1 and the sedimentation box 2 are connected by a pipeline and a suction pump, and the wastewater is sent into the ring frame 41 of the screening box 1 through the water inlet 11. The motor 32 drives the shaft 34 to rotate through the transmission belt 33, and the shaft 34 drives the first rotating scraper 46, the second rotating scraper 49, and the stirring frame to rotate, so as to realize the wall scraping cleaning inside the screening box 1 and the uniform mixing of the wastewater and the flocculant. The first rotating scraper 46 cleans the hair and pushes part of the wastewater into the inside of other layers, and the wastewater is screened and sent out through the ring frame 41 of other layers that is not blocked by the hair. The first rotating scraper 46 also pushes the impurities and hair on the inclined surface 45 to move, enter the inside of the discharge tube 43 through the delivery port 47, and then send it out from the discharge tube 43. The bottom of the shaft 34 passes through the fixed frame 4 12 is connected to the driving gear 411, and the rotation of the shaft 34 drives the driving gear 411 to rotate, and meshes with the four driven gears 413 for transmission, driving the four sets of stirring frames 44 to rotate at the bottom of the screening box 1, so that the flocculant and the wastewater are mixed more fully, and the wastewater falls into the lower layer and mixes with the flocculant. Then, the wastewater reacts with the flocculant and is sent to the sedimentation box 2 through the suction pump. The rotation of the turntable 35 and the first connecting rod 36 pull the second connecting rod 37 to move back and forth, and the vertical rod 38 drives the translation scraper 26 to translate along the surface of the screen plate 25, pushing the precipitate into the boxes 24 on both sides to avoid accumulation on the surface of the screen plate 25. The impurities screened by the screen plate 25 are sent to the inside of the side box 24, and the wastewater is sent out from the sedimentation box 2 for the next stage of treatment.

[0045] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wastewater treatment device for a cattle slaughterhouse, comprising a screening box (1), characterized in that: A screening assembly (4) is provided inside the screening box (1), the screening assembly (4) comprising a ring frame (41), the upper end of the ring frame (41) being fixed to the top of the screening box (1), and the lower end of the ring frame (41) being fixed with a bottom plate (48), a gap being provided between the ring frame (41) and the inner wall of the screening box (1), a collecting box (42) being fixed to the bottom of the ring frame (41), and a drain groove being provided on the lateral surface of the ring frame (41), a water inlet (11) being provided at the top of the screening box (1), and the water inlet (11) being communicated with the inside of the ring frame (41), a sedimentation box (2) being provided on one side of the screening box (1), and a sieve plate (48) being fixed inside the sedimentation box (2), 25), the two sides of the sieve plate (25) are slidably connected with side boxes (24), the sides of the side boxes (24) are provided with leakage grooves identical to those of the sieve plate (25), the openings of the side boxes (24) are flush with the sieve plate (25), the tops of the screening box (1) and the sedimentation box (2) are provided with a driving assembly (3), and the driving assembly (3) comprises a shaft rod (34), the interior of the screening box (1) is rotatably mounted with the shaft rod (34) through a bearing, and the shaft rod (34) passes through a ring frame (41) and a collecting box (42), a translation scraper (26) is slidably connected to the surface of the sieve plate (25), and the driving assembly (3) drives the translation scraper (26) to reciprocate horizontally.

2. A cattle slaughterhouse wastewater treatment device according to claim 1, characterized in that: The screening assembly (4) further comprises a second rotating scraper (49), four groups of second rotating scrapers (49) are symmetrically arranged inside the ring frame (41), and the second rotating scrapers (49) are fixed to the shaft rod (34), the second rotating scrapers (49) are in sliding contact with the inner wall of the ring frame (41) and the bottom plate (48), a slag discharge port (410) is provided on the surface of the bottom plate (48) located between the two groups of second rotating scrapers (49), and the slag discharge port (410) is connected to the inside of the collection box (42), and a conical inclined surface (45) is provided on the surface of the collection box (42).

3. A cattle slaughterhouse sewage treatment device according to claim 2, characterized in that: The bottom of the collecting box (42) is provided with a delivery outlet (47), and a discharge cylinder (43) is fixed at the bottom of the delivery outlet (47), and the other end of the discharge cylinder (43) passes through the bottom of the screening box (1). Four groups of first rotating scrapers (46) are fixed at equal intervals on the shaft rod (34) at positions corresponding to the inclined surface (45) inside the collecting box (42), and the first rotating scrapers (46) are in sliding contact with the inclined surface (45).

4. A cattle slaughterhouse sewage treatment device according to claim 3, characterized in that: A driving gear (411) is rotatably sleeved on the surface of the discharge tube (43) passing through the screening box (1) via a bearing, a fixing frame (412) is fixed to the outer end of the shaft (34) passing through the discharge tube (43), and the other end of the fixing frame (412) is fixedly connected to the surface of the driving gear (411), a plurality of driven gears (413) are rotatably mounted on the bottom of the screening box (1) via a rotating shaft, and the driving gear (411) is meshedly connected to the driven gear (413), and a stirring frame (44) is rotatably mounted on the inner wall of the bottom of the screening box (1) at a position corresponding to the driven gear (413) via a bearing, and the stirring frame (44) is fixedly connected to the driven gear (413).

5. A cattle slaughterhouse wastewater treatment device according to claim 1, characterized in that: The driving assembly (3) further comprises a mounting frame (31), the mounting frame (31) being fixed on the top of the screening box (1), and a motor (32) being fixed on the surface of the mounting frame (31), a turntable (35) being fixed on the output end of the motor (32), and a first connecting rod (36) being rotatably connected to an eccentric side of the bottom of the turntable (35) via a rotating shaft, the other end of the first connecting rod (36) being rotatably connected to a second connecting rod (37) via a rotating shaft, a vertical rod 38 being fixed on the top of the translation scraper (26), and the other end of the second connecting rod (37) being rotatably connected to the vertical rod 38 via a rotating shaft.

6. A cattle slaughterhouse wastewater treatment device according to claim 5, characterized in that: A transmission belt (33) is installed at the output end of the motor (32), and a pulley on the other side of the transmission belt (33) is fixed on the surface of the shaft (34) passing through the screening box (1).

7. A cattle slaughterhouse wastewater treatment device according to claim 1, characterized in that: The outer ends of the boxes (24) on both sides of the sedimentation box (2) are sealed with sealing plates (22); the outer surface of the sedimentation box (2) located at the bottom of the screen plate (25) is provided with a discharge pipe (21); one side of the top of the screening box (1) is provided with a feeding pipe (12); the top of the sedimentation box (2) is provided with a moving groove (23), and the top of the translation scraper (26) slides along the moving groove (23).

8. A method for treating wastewater from a cattle slaughterhouse using the device as claimed in claim 1, characterized in that: The sewage treatment method comprises the following steps: 1) Screening: wastewater is sent into the ring frame of the screening box through the water inlet, and the driving component drives the shaft rod in the screening box to rotate. When the surface of the ring frame corresponding to the water inlet is blocked by hair, the second rotating scraper moves along the inside of the ring frame until it moves to the position of the slag discharge port and falls into the collection box, and pushes part of the wastewater into other layers. The wastewater is screened and sent out through the ring frames of other layers that are not blocked by hair, and enters the discharge cylinder through the delivery port; 2) Flocculation and mixing: Flocculants can be added into the screening box through the adding tube to react with the wastewater. The bottom of the shaft is connected to the driving gear through the fixing frame. The rotation of the shaft drives the driving gear to rotate and meshes with the four driven gears to drive the four sets of stirring frames to rotate at the bottom of the screening box, so that the flocculants and wastewater are mixed more fully; 3) Sedimentation: The wastewater is sent into the sedimentation box through the suction pump. Through the rotation of the turntable and the reciprocating translation movement of the second connecting rod pulled by the first connecting rod, the translation scraper is driven by the vertical rod to translate along the surface of the screen plate, and the sediment is pushed into the boxes on both sides to avoid accumulation on the surface of the screen plate. The impurities screened by the screen plate are sent to the inside of the side box; 4) Delivery: The sediment is continuously pushed into the two side boxes to avoid excessive sediment accumulation on the surface of the screen plate. By manually opening the sealing plate, the side box can be taken out from the sedimentation box, and the sediment can be cleaned. The wastewater after screening and sedimentation is delivered through the discharge pipe for processing in the next process.

9. A cattle slaughterhouse wastewater treatment method according to claim 8, characterized in that: In the step of sending out the impurities in the collecting box, a first rotating scraper that fits the inclined surface is set on the shaft inside the collecting box. The first rotating scraper pushes the impurities and hair on the inclined surface to move and gradually fall into the position of the sending port and enter the discharge tube.

10. A cattle slaughterhouse wastewater treatment method according to claim 9, characterized in that: The translation scraper moves in the step, and a moving groove is provided on the top of the sedimentation box. The vertical rod of the driving assembly is connected to the translation scraper through the moving groove and the vertical rod, and the moving direction of the translation scraper is guided and limited so that it keeps reciprocating on the surface of the screen plate.

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