High-efficiency multi-section leather production sewage treatment process and equipment

Abstract

The invention relates to the field of sewage treatment, in particular to high-efficiency multi-section leather production sewage treatment equipment which comprises a box body, a reservoir and an impurity tank are arranged in an inner cavity of the box body, two filter assemblies are mounted on the box body, the box body is communicated with a discharge pipe, the discharge pipe is communicated with the impurity tank, and the filter assemblies are connected with the discharge pipe. The box body and the mounting frame are rotationally connected with a rotating shaft through a sealing bearing, a spiral conveying blade is fixedly mounted on the outer wall of the rotating shaft, one end of the rotating shaft is fixedly connected with the driving end of a servo motor, and the two groups of filtering assemblies are respectively matched with a group of cleaning assemblies; when the device is used, the two conveying belts can be driven to conduct conveying through driving of the servo motor, the brushes are further driven to rotate and work through driving of the servo motor, and it is ensured that impurities filtered from the outer surfaces of the conveying belts can fall into the impurity grooves through cooperative use of conveying of the conveying belts and rotation of the brushes; and it is avoided that too many impurities exist on the two sets of conveying belts, and then filter holes in the conveying belts are blocked.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a high-efficiency multi-stage leather production sewage treatment process and equipment. Background Art

[0002] With the rapid development of the leather industry in recent years, leather wastewater has become one of the important sources of pollution. The wastewater generated in the leather production process mainly comes from the pre-tanning section (including soaking and fleshing, dehairing and liming, deliming and softening, and chemical processes), the tanning section (including pickling and tanning processes), and the finishing section (including retanning, neutralization, dyeing, and fatliquoring processes). Before the leather production wastewater is discharged, it is necessary to treat the leather production wastewater through multiple processes, including sewage filtration. Simply put, it is to use a filter to filter out the waste residue and impurities in the sewage. The existing leather sewage treatment device usually uses a multi-stage filter when filtering the sewage. The net filters the sewage layer by layer, and during the filtering process, the scraper is driven to move back and forth by the driving source to continuously scrape off the waste residue and impurities on the surface of the filter. However, these waste residue and impurities are still on the upper surface of the filter. When more and more impurities are filtered out from the upper surface of the filter, the scraper will be covered. The reciprocating movement of the scraper will reduce the cleaning effect on the surface of the filter. The speed of the filter filtering sewage is also reduced due to the excessive waste residue and impurities on the surface of the filter. At this time, it is necessary to stop the filtering process and clean and recycle the waste residue and impurities on the surface of the filter, which delays the filtration time. For this reason, we propose a high-efficiency multi-stage leather production wastewater treatment process and equipment. Summary of the invention

[0003] The object of the present invention is to provide a high-efficiency multi-stage leather production wastewater treatment equipment, comprising a box body, a water storage tank and an impurity tank are arranged in the inner cavity of the box body, two groups of filter components are installed on the box body, the box body is connected to a discharge pipe, the discharge pipe and the impurity tank are mutually connected, the box body and the mounting frame are rotatably connected to a rotating shaft through a sealed bearing, a spiral conveying blade is fixedly installed on the outer wall of the rotating shaft, one end of the rotating shaft is fixedly connected to the driving end of a servo motor, two groups of the filter components are matched with a group of cleaning components respectively, and a water inlet component is fixedly installed on the top of the box body;

[0004] The filtering assembly comprises a transmission roller 1 and a transmission roller 2, wherein the transmission roller 1 and the transmission roller 2 are rotatably connected to a box body through two groups of sealed bearings respectively, and the outer sides of the transmission roller 1 and the transmission roller 2 are rotatably connected to a transmission belt, and a plurality of groups of filter holes are evenly arranged on the transmission belt, and a group of sprocket wheels 1 are fixedly installed on the outer walls of the transmission roller 1 and the transmission roller 2 respectively, and the two groups of sprocket wheels 1 are engaged with chain 1, and sealing strips are fixedly connected to both sides of the transmission belt, and the sealing strips are slidably fitted to the inner wall of the box body.

[0005] Preferably, the two groups of conveyor belts are both arranged obliquely inside the box body, and the aperture of the filter holes on the conveyor belt located at the upper position is larger than the aperture of the filter holes on the conveyor belt located at the lower position.

[0006] Preferably, the servo motor is fixedly mounted on a mounting frame, and the mounting frame is fixedly mounted on the outer wall of the box body.

[0007] Preferably: a group of sprocket two is fixedly installed on the outer wall of the two groups of transmission rollers two, and the two groups of sprocket two are engaged with chain two, and a group of sprocket three is fixedly installed on the outer wall of the rotating shaft and the outer wall of a group of transmission rollers one, and the two groups of sprocket three are engaged with chain three.

[0008] Preferably: the cleaning assembly includes a cleaning shaft, which is rotatably connected to the box body through two groups of sealed bearings, a brush is fixedly installed on the outer wall of the cleaning shaft, and the brush can contact the corresponding outer surface of the conveyor belt, one end of the cleaning shaft is fixedly connected to gear one, the gear one meshes with gear two, and the gear two is fixedly installed on the outer wall of a corresponding group of conveyor rollers one.

[0009] Preferably, a group of inclined smooth plates are fixedly mounted on the inner wall of the box, and the smooth plates are located between the two groups of conveyor belts.

[0010] Preferably: the water inlet assembly includes a water inlet box, the water inlet box is fixedly installed on the top of the box body, the top of the water inlet box is connected to a water inlet bucket, the water inlet box is rotatably connected to a barrier roller through two groups of sealed bearings, the barrier roller is provided with four groups of grooves, the bottom of the water inlet box is open, a group of sprockets four are fixedly installed on the outer wall of the barrier roller and the outer wall of a group of transmission rollers, and the two groups of sprockets four are engaged with chains four.

[0011] Preferably, a group of supporting legs are fixedly installed at the four corners of the bottom of the box body, the box body is connected to a drainage pipe, a valve is installed on the drainage pipe, and the drainage pipe and the water reservoir are interconnected.

[0012] Preferably, a controller is fixedly mounted on the outer wall of the box body, and the controller controls the connected servo motor.

[0013] A high-efficiency multi-stage leather production wastewater treatment process includes any process using the high-efficiency multi-stage leather production wastewater treatment equipment.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the present invention is used, the two sets of conveyor belts can be driven by the drive of the servo motor, and the drive of the servo motor can also drive the brush to rotate. Through the coordinated use of the transmission of the conveyor belt and the rotation of the brush, it is ensured that the impurities filtered on the outer surface of the conveyor belt will fall into the impurity groove, avoiding excessive impurities on the two sets of conveyor belts and blocking the filter holes on the conveyor belts. The drive of the servo motor also drives the spiral conveying blades to rotate, driving the impurities in the impurity groove to be discharged from the discharge pipe, avoiding the need to stop the filtering work and clean the filtered impurities during the filtering process, thereby improving the filtering efficiency.

[0016] 2. When the present invention is used, the sewage generated by leather production is gradually poured into the water inlet hopper, and the sewage will flow into the inner cavity of the water inlet tank. It will be blocked by the barrier roller, and the sewage in the water inlet tank will not directly fall on the conveyor belt located at the upper position; when the barrier roller rotates, since the barrier roller is provided with a groove, the sewage will enter the groove during the rotation of the barrier roller. When the groove rotates to the bottom, the sewage in the groove will fall on the conveyor belt located at the upper position, and under the action of the barrier roller, the sewage will fall on the conveyor belt located at the upper position gradually, and the sewage will be evenly spread out, which is convenient for the conveyor belt located at the upper position to filter the sewage; and the rotation of the barrier roller is also achieved by the drive of the servo motor, thereby ensuring that when the barrier roller rotates to drain the water from the water inlet tank, the two sets of conveyor belts are transmitted at the same time, thereby ensuring the filtering effect.

[0017] 3. During the filtration process of the present invention, after the sewage passes through the filter holes of the conveyor belt located at the upper position, most of the sewage will fall on the smooth plate, and a small part will directly fall on the conveyor belt located at the lower position. At this time, the sewage will flow downward along the inclined smooth plate and gradually fall on the conveyor belt located at the lower position; the smooth plate is provided to improve the filtration effect and prevent most of the sewage from falling directly on the conveyor belt located at the lower position, so that this part of the sewage stays for too short a time and cannot be filtered in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0020] Figure 3 This is a schematic diagram of the interior of the box;

[0021] Figure 4 This is a schematic diagram of the interior of the water inlet tank;

[0022] Figure 5 Schematic diagram of the filter assembly.

[0023] In the figure: 1. box body; 2. water reservoir; 3. impurity tank; 4. filter assembly; 401. transmission roller one; 402. transmission roller two; 403. transmission belt; 404. sprocket one; 405. chain one; 406. sealing strip; 5. discharge pipe; 6. mounting frame; 7. rotating shaft; 8. spiral conveying blade; 9. cleaning assembly; 901. cleaning shaft; 902. brush; 903. gear one; 904. gear two; 10. water inlet assembly; 1001. water inlet box; 1002. water inlet bucket; 1003. barrier roller; 1004. groove; 1005. sprocket four; 1006. chain four; 11. servo motor; 12. sprocket two; 13. chain two; 14. sprocket three; 15. chain three; 16. smooth plate; 17. support leg; 18. drain pipe; 19. controller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 - Figure 5 , the figure shows a high-efficiency multi-stage leather production wastewater treatment equipment of the present invention, including a box body 1, a water reservoir 2 and an impurity tank 3 are provided in the inner cavity of the box body 1, two groups of filter components 4 are installed on the box body 1, the box body 1 is connected to a discharge pipe 5, the discharge pipe 5 and the impurity tank 3 are mutually connected, the box body 1 and the mounting frame 6 are rotatably connected to the rotating shaft 7 through a sealed bearing, a spiral conveying blade 8 is fixedly installed on the outer wall of the rotating shaft 7, one end of the rotating shaft 7 is fixedly connected to the driving end of the servo motor 11, the two groups of the filter components 4 are respectively matched with a group of cleaning components 9, and a water inlet component 10 is fixedly installed on the top of the box body 1;

[0026] The filtering assembly 4 comprises a transmission roller 1 401 and a transmission roller 2 402, wherein the transmission roller 1 401 and the transmission roller 2 402 are rotatably connected to the housing 1 through two sets of sealed bearings respectively, and the outer sides of the transmission roller 1 401 and the outer sides of the transmission roller 2 402 are rotatably connected to a transmission belt 403, and a plurality of filter holes are evenly arranged on the transmission belt 403, and a set of sprocket wheels 1 404 are fixedly installed on the outer walls of the transmission roller 1 401 and the transmission roller 2 402 respectively, and the two sets of sprocket wheels 1 404 are engaged with a chain 1 405, and sealing strips 406 are fixedly connected to both sides of the transmission belt 403, and the sealing strips 406 are slidably fitted to the inner wall of the housing 1.

[0027] The two groups of conveyor belts 403 are both inclinedly arranged inside the box body 1, and the aperture of the filter holes on the conveyor belt 403 located at the upper position is larger than the aperture of the filter holes on the conveyor belt 403 located at the lower position; when in use, the larger impurities in the sewage are filtered out through the conveyor belt 403 located at the upper position, and then the fine impurities in the sewage are filtered out through the conveyor belt 403 located at the lower position, thereby achieving multi-stage filtration processing.

[0028] The servo motor 11 is fixedly mounted on the mounting frame 6, and the mounting frame 6 is fixedly mounted on the outer wall of the box body 1, so that the mounting structure of the servo motor 11 and the mounting frame 6 is stable.

[0029] A group of sprockets 2 12 are fixedly installed on the outer walls of the two groups of transmission rollers 2 402, and the two groups of sprockets 2 12 are engaged with chain 2 13. A group of sprockets 3 14 are fixedly installed on the outer wall of the rotating shaft 7 and the outer wall of a group of transmission rollers 1 401, and the two groups of sprockets 3 14 are engaged with chain 3 15. During use, under the transmission action of the two groups of sprockets 2 12 and gear 2 13, the two groups of transmission rollers 2 402 will rotate in the same direction and at the same speed; under the transmission action of the two groups of sprockets 3 14 and chain 3 15, the rotation of the rotating shaft 7 will drive a group of transmission rollers 1 401 to rotate.

[0030] The cleaning assembly 9 includes a cleaning shaft 901, which is rotatably connected to the box body 1 through two sets of sealed bearings. A brush 902 is fixedly installed on the outer wall of the cleaning shaft 901, and the brush 902 can contact the outer surface of the corresponding transmission belt 403. One end of the cleaning shaft 901 is fixedly connected to a gear 1 903, and the gear 1 903 is meshed with a gear 2 904. The gear 2 904 is fixedly installed on the outer wall of a corresponding set of transmission rollers 1 401; during use, the rotation of the transmission roller 1 401 drives the gear 2 903 to rotate. 04 rotates, the rotation of gear two 904 will lead to the rotation of gear one 903, the rotation of gear one 903 will drive the cleaning shaft 901 to rotate, the rotation of cleaning shaft 901 will drive the brush 902 to rotate, because the brush 902 contacts the outer surface of the conveyor belt 403, during the conveyor belt 403 is being conveyed, the rotating brush 902 will continuously clean the outer surface of the conveyor belt 403, the brush 902 and the conveyor roller one 401 are both located directly above the impurity tank 3, thereby ensuring that the impurities filtered off the outer surface of the conveyor belt 403 will fall into the impurity tank 3.

[0031] A group of inclined smooth plates 16 are fixedly installed on the inner wall of the box body 1, and the smooth plates 16 are located between the two groups of conveyor belts 403; during the filtering process, after the sewage passes through the filter holes of the conveyor belt 403 located at the upper position, most of the sewage will fall on the smooth plates 16, and a small part will directly fall on the conveyor belt 403 located at the lower position. At this time, the sewage will flow downward along the inclined smooth plates 16 and gradually fall on the conveyor belt 403 located at the lower position; the smooth plates 16 are provided to improve the filtering effect and prevent most of the sewage from falling directly on the conveyor belt 403 located at the lower position, so that this part of the sewage stays for too short a time, resulting in no time for filtration.

[0032] The water inlet assembly 10 includes a water inlet box 1001, which is fixedly mounted on the top of the box body 1. The top of the water inlet box 1001 is connected to a water inlet bucket 1002. The water inlet box 1001 is rotatably connected to a blocking roller 1003 through two sets of sealed bearings. Four sets of grooves 1004 are provided on the blocking roller 1003. The bottom of the water inlet box 1001 is open. A set of sprocket wheels 1005 are fixedly mounted on the outer wall of the blocking roller 1003 and the outer wall of a set of transmission rollers 402. Both sets of sprocket wheels 1005 are engaged with chains 1006. When in use, the sewage generated by leather production is gradually poured into the water inlet bucket 1002, and the sewage will flow into In the inner cavity of the water inlet tank 1001, the sewage in the water inlet tank 1001 is blocked by the barrier roller 1003 and will not fall directly onto the conveyor belt 403 located at the upper position; when the barrier roller 1003 rotates, since the barrier roller 1003 is provided with a groove 1004, during the rotation of the barrier roller 1003, the sewage will enter the groove 1004, and when the groove 1004 rotates to the bottom, the sewage in the groove 1004 will fall onto the conveyor belt 403 located at the upper position, and under the action of the barrier roller 1003, the sewage falls on the conveyor belt 403 located at the upper position in small amounts, and the sewage is evenly spread out, so that the conveyor belt 403 located at the upper position can filter the sewage conveniently.

[0033] A set of supporting legs 17 are fixedly installed at the four corners of the bottom of the box body 1, the box body 1 is connected to a drain pipe 18, a valve is installed on the drain pipe 18, and the drain pipe 18 and the water reservoir 2 are interconnected; the box body 1 can be strongly supported by the four sets of supporting legs 17; during the filtering process, the valve on the drain pipe 18 is opened, and the end of the drain pipe 18 away from the box body 1 can be externally connected to a pumping mechanism to pump the filtered water into the next process for further treatment.

[0034] A controller 19 is fixedly mounted on the outer wall of the box body 1, and the controller 19 controls the servo motor 11. When in use, the device is connected to a suitable power supply, and the operation of the servo motor 11 can be controlled by the controller 19. The servo motor 11 is a prior art, and a servo motor with suitable driving force is used.

[0035] Working principle of the present invention: when in use, the sewage generated by leather production is gradually poured into the water inlet bucket 1002, and the sewage will flow into the inner cavity of the water inlet tank 1001, and will be blocked by the blocking roller 1003, so that the sewage in the water inlet tank 1001 will not directly fall on the conveyor belt 403 located at the upper position; at this time, starting the servo motor 11 will drive the rotating shaft 7 to rotate at a suitable speed, and under the transmission action of the two sets of sprocket wheels 3 14 and the chain 3 15, the rotation of the rotating shaft 7 will drive a set of conveyor rollers 1 401 to rotate, and the conveyor rollers 1 401 rotate and rotate between the two sets of Under the transmission action of the sprocket wheel 1 404 and the chain wheel 1 405, the transmission roller 1 401 and the transmission roller 2 402 in the same group of filter components 4 will rotate in the same direction and at the same speed, thereby driving the transmission belt 403 to transmit. At this time, under the transmission action of the two groups of sprocket wheels 2 12 and the gear wheel 2 13, the two groups of transmission rollers 2 402 will rotate in the same direction and at the same speed, thereby causing the two groups of transmission belts 403 to transmit in the same direction and at the same speed. At this time, the transmission roller 2 402 rotates and under the transmission action of the two groups of sprocket wheels 4 and the chain wheel 4 1006, the roller 1003 will be blocked from rotating.

[0036] When the blocking roller 1003 rotates, since the blocking roller 1003 is provided with a groove 1004, during the rotation of the blocking roller 1003, the sewage will enter the groove 1004. When the groove 1004 rotates downward, the sewage in the groove 1004 will fall on the conveyor belt 403 located at the upper position, and under the action of the blocking roller 1003, the sewage will fall on the conveyor belt 403 located at the upper position in small amounts, and the sewage will be evenly spread out, so that the conveyor belt 403 located at the upper position can filter the sewage easily.

[0037] The conveyor belt 403 at the upper position is used to filter out the larger impurities in the sewage, and then most of the sewage will fall on the smooth plate 16, and a small part will directly fall on the conveyor belt 403 at the lower position. At this time, the sewage will flow downward along the inclined smooth plate 16 and gradually fall on the conveyor belt 403 at the lower position. At this time, the conveyor belt 403 at the lower position will filter out the fine impurities in the sewage, thereby achieving multi-stage filtering treatment;

[0038] During the filtering process of the two groups of conveyor belts 403, the two groups of conveyor belts 403 are in a transmission state, and the two groups of conveyor belts 403 are inclined, and the rotation of the feed roller 1 401 will drive the gear 2 904 to rotate, and the rotation of the gear 2 904 will reach the rotation of the gear 1 903, and the rotation of the gear 1 903 will drive the cleaning shaft 901 to rotate, and the rotation of the cleaning shaft 901 will drive the brush 902 to rotate. Since the brush 902 contacts the outer surface of the conveyor belt 403, during the transmission of the conveyor belt 403, the rotating brush 902 will continuously clean the outer surface of the conveyor belt 403, and the brush 902 and the conveyor roller 1 401 are both located directly above the impurity groove 3, thereby ensuring that the impurities filtered off the outer surface of the conveyor belt 403 will fall into the impurity groove 3, avoiding excessive impurities on the two groups of conveyor belts 403, thereby blocking the filter holes on the conveyor belt 403;

[0039] When impurities fall into the impurity groove 3 , at the same time, the rotation of the rotating shaft 7 will drive the spiral conveying blade 8 to rotate. Since the spiral conveying blade 8 is in the impurity groove 3 , the rotation of the spiral conveying blade 8 will drive the impurities in the impurity groove 3 to be discharged from the discharge pipe 5 .

[0040] It should be noted that a high-efficiency multi-stage leather production wastewater treatment process includes any process using the described high-efficiency multi-stage leather production wastewater treatment equipment.

[0041] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A high-efficiency multi-stage leather production wastewater treatment equipment, comprising a housing (1), characterized in that: A water reservoir (2) and an impurity tank (3) are provided in the inner cavity of the box (1); two groups of filter components (4) are installed on the box (1); the box (1) is connected to a discharge pipe (5); the discharge pipe (5) and the impurity tank (3) are interconnected; the box (1) and the mounting frame (6) are rotatably connected to a rotating shaft (7) via a sealed bearing; a spiral conveying blade (8) is fixedly installed on the outer wall of the rotating shaft (7); one end of the rotating shaft (7) is fixedly connected to the driving end of a servo motor (11); the two groups of filter components (4) are respectively matched with a group of cleaning components (9); and a water inlet component (10) is fixedly installed on the top of the box (1); The filter assembly (4) comprises a transmission roller 1 (401) and a transmission roller 2 (402); the transmission roller 1 (401) and the transmission roller 2 (402) are rotatably connected to the housing (1) via two sets of sealed bearings respectively; the outer sides of the transmission roller 1 (401) and the outer sides of the transmission roller 2 (402) are rotatably connected to a transmission belt (403); a plurality of filter holes are evenly arranged on the transmission belt (403); a set of sprocket wheels 1 (404) are fixedly mounted on the outer walls of the transmission roller 1 (401) and the transmission roller 2 (402); the two sets of sprocket wheels 1 (404) are engaged with a chain 1 (405); sealing strips (406) are fixedly connected to both sides of the transmission belt (403); the sealing strips (406) are slidably fitted to the inner wall of the housing (1).

2. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: The two groups of conveyor belts (403) are both arranged obliquely inside the box (1), and the aperture of the filter holes on the conveyor belt (403) located at the upper position is larger than the aperture of the filter holes on the conveyor belt (403) located at the lower position.

3. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: The servo motor (11) is fixedly mounted on a mounting frame (6), and the mounting frame (6) is fixedly mounted on an outer wall of the box body (1).

4. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: A set of sprockets 2 (12) are respectively fixedly mounted on the outer wall of the two sets of transmission rollers 2 (402), and both sets of sprockets 2 (12) are engaged with chain 2 (13). A set of sprockets 3 (14) are respectively fixedly mounted on the outer wall of the rotating shaft (7) and the outer wall of a set of transmission rollers 1 (401), and both sets of sprockets 3 (14) are engaged with chain 3 (15).

5. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: The cleaning assembly (9) comprises a cleaning shaft (901), the cleaning shaft (901) being rotatably connected to the housing (1) via two sets of sealed bearings, a brush (902) being fixedly mounted on the outer wall of the cleaning shaft (901), the brush (902) being able to contact the outer surface of the corresponding transmission belt (403), one end of the cleaning shaft (901) being fixedly connected to gear one (903), the gear one (903) being meshed with gear two (904), the gear two (904) being fixedly mounted on the outer wall of a corresponding set of transmission rollers one (401).

6. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: A group of inclined smooth plates (16) are fixedly mounted on the inner wall of the box body (1), and the smooth plates (16) are located between two groups of conveyor belts (403).

7. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: The water inlet assembly (10) comprises a water inlet box (1001), the water inlet box (1001) is fixedly mounted on the top of the box body (1), the top of the water inlet box (1001) is connected to a water inlet bucket (1002), the water inlet box (1001) is rotatably connected to a blocking roller (1003) via two sets of sealed bearings, the blocking roller (1003) is provided with four sets of grooves (1004), the bottom of the water inlet box (1001) is open, a set of sprockets (1005) are fixedly mounted on the outer wall of the blocking roller (1003) and on the outer wall of a set of transmission rollers (402), respectively, and the two sets of sprockets (1005) are both engaged with chains (1006).

8. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: A set of supporting legs (17) are fixedly mounted at the four corners of the bottom of the box body (1); the box body (1) is connected to a drainage pipe (18); a valve is mounted on the drainage pipe (18); and the drainage pipe (18) and the water reservoir (2) are interconnected.

9. The high-efficiency multi-stage leather production wastewater treatment equipment according to claim 1 is characterized by: A controller (19) is fixedly mounted on the outer wall of the box body (1), and the controller (19) controls the connected servo motor (11).

10. A high-efficiency multi-stage leather production wastewater treatment process, characterized by: A high-efficiency multi-stage leather production wastewater treatment equipment comprising any one of claims 1-9.

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