Conveying belt sludge cleaning device used after filter pressing of plate-and-frame filter press

Abstract

The utility model discloses a sludge cleaning device for a conveyor belt after filter pressing of a plate-and-frame filter press, which belongs to the technical field of sewage treatment and comprises a bracket, the conveyor belt is arranged on the bracket, a primary sludge scraping device and a hollow splash-proof enclosure are arranged on the bracket, a sludge pulling vehicle is arranged below the primary sludge scraping device, and the hollow splash-proof enclosure is arranged below the conveyor belt. The splash-proof enclosure is arranged on the bracket and is close to the primary sludge scraping device, the splash-proof enclosure is vertically arranged, a secondary sludge scraping device and a water spraying device are arranged in the splash-proof enclosure, a low-position sedimentation tank is arranged below the splash-proof enclosure, a filter screen is vertically arranged at the bottom of the low-position sedimentation tank, the low-position sedimentation tank is divided into a water storage tank and a sludge storage tank, and cleaned sludge enters the sludge storage tank; one end, far away from the water storage tank, of the water outlet pipe is connected with the water spraying device. According to the sludge cleaning device, slime on the conveying belt can be completely cleaned, meanwhile, the slime cannot fall on the ground, manual cleaning is not needed, water for flushing the sludge can be recycled, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sludge cleaning device for a conveyor belt after filtration by a plate and frame filter press. Background Art

[0002] The sludge after sewage treatment needs to be dehydrated to reduce the volume of sludge for easy transportation and disposal. The dehydration equipment used is usually a plate and frame filter press and a circulating belt conveyor at the bottom of the plate and frame filter press. The circulating belt conveyor consists of a conveyor belt, a drive device and a bracket. The drive device includes a motor, a reducer and a drum. Through the steps of pretreatment in the sludge tank, filtration by a plate and frame filter press and dehydration, the moisture in the sludge can be effectively removed, solid-liquid separation can be achieved, and a solid mud cake with a water content of less than 60% can be obtained.

[0003] The current problem is that the sludge has a certain viscosity after being pressed into a cake, and a small amount of unformed sludge with a high water content will appear on the edge of the sludge cake. When the sludge in the plate and frame filter press is unloaded onto the conveyor belt for transportation, the sludge will stick to the conveyor belt. After the sludge is transported to the tail end of the conveyor belt, it falls into the receiving vehicle. The sludge with a high water content stuck on the conveyor belt circulates with the conveyor belt, and drips onto the ground along the conveying track of the conveyor belt, causing pollution to the environment. In addition, the sludge is too sticky to be cleaned up in one go, and the cleaning process is mostly manual, the conveyor belt is long, the workload is heavy, and the cleaning efficiency is low. There are also safety hazards such as bumps and falls when manually cleaning the sludge on the ground.

[0004] In view of the above problems existing in the prior art, the utility model designs and manufactures a sludge cleaning device for the conveyor belt of a plate and frame filter press after filtration, in combination with many years of design and use experience in related fields, to overcome the above defects. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a sludge cleaning device for the conveyor belt after filtration of a plate and frame filter press, which can effectively clean the sludge on the conveyor belt and prevent the sludge from dripping onto the ground as the conveyor belt turns over and circulates, causing environmental pollution. This saves manpower, and the water used to wash the sludge can be recycled, saving resources.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a sludge cleaning device for a conveyor belt after filtration of a plate and frame filter press, comprising a bracket, a conveyor belt is arranged on the bracket, a primary sludge scraping device for cleaning sludge is arranged on the bracket, the primary sludge scraping device is located below the end of the conveyor belt in the conveying direction, and a sludge pulling vehicle is arranged below the primary sludge scraping device;

[0007] A hollow splash-proof enclosure is provided below the conveyor belt, the splash-proof enclosure is provided on a bracket and is close to a primary sludge scraping device, the splash-proof enclosure is vertically arranged, a secondary sludge scraping device and a water spraying device for cleaning sludge are provided inside the splash-proof enclosure, and a low-position sedimentation tank is provided below the splash-proof enclosure;

[0008] The bottom of the low-level sedimentation tank is vertically provided with a filter screen and is divided into a water storage tank and a sludge storage tank. The cleaned sludge enters the sludge storage tank. The water storage tank is provided with a water outlet pipe near the bottom, and the water outlet pipe is connected to the water spraying device away from the end of the water storage tank.

[0009] Preferably, a plurality of mud discharge pipes are provided at the bottom of the mud storage tank, and the ends of the plurality of mud discharge pipes away from the mud storage tank are all connected to a main mud discharge pipe.

[0010] Preferably, a receiving hopper is provided at the lower end of the splash-proof enclosure, the upper end surface of the receiving hopper coincides with the lower end surface of the splash-proof enclosure, the lower end of the receiving hopper is connected to a mud discharge pipe, and the mud discharge pipe is connected to a mud storage tank at one end away from the receiving hopper.

[0011] Preferably, the receiving hopper is funnel-shaped.

[0012] Preferably, the splash guard is made of visible material.

[0013] Preferably, a door is hinged on the splash-proof enclosure.

[0014] Preferably, the primary scraper device comprises a first scraper blade, and a gap is left between one end of the first scraper blade and the outer surface of the conveyor belt.

[0015] Preferably, the secondary scraper device comprises a second scraper blade, one end of which is in linear contact with the outer surface of the conveyor belt along the width direction of the conveyor belt.

[0016] Preferably, the water spraying device includes a water pipe, which is horizontally arranged along the width direction of the conveyor belt. One end of the water pipe is fixed to the inner surface of the splash-proof cover, and the other end passes through the splash-proof cover and the bracket in sequence and is connected to the outlet pipe away from the water tank end. A plurality of nozzles are equidistantly provided on the water pipe, and the nozzles are arranged toward the second scraper.

[0017] Preferably, the water outlet pipe is provided with a water outlet valve, and a plurality of the mud discharge pipes are provided with mud discharge valves.

[0018] Preferably, a plurality of supporting feet are symmetrically provided on the lower end surfaces of the brackets on both sides of the conveyor belt.

[0019] The utility model is beneficial in that:

[0020] 1. The utility model is provided with a splash-proof enclosure outside the water spray device to prevent sludge from splashing when flushing the second scraper. The sludge and water enter the sludge storage tank along the mud outlet pipe and will not drip onto the ground. A filter screen is provided in the low-level sedimentation tank to separate the sludge and water. The water enters the water storage tank. The separated water enters the water spray device from the water outlet pipe to flush the sludge on the second scraper, thereby realizing the reuse of water and saving resources.

[0021] 2. The utility model is provided with a primary scraper device and a secondary scraper device to completely clean the sludge on the conveyor belt, to prevent the sludge from dripping onto the ground as the conveyor belt turns over and circulates, to keep the ground clean during the sludge transportation process, to save manual operation, to improve the cleaning efficiency, and to ensure the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a sludge cleaning device on the conveyor belt after filtration of a plate and frame filter press.

[0023] Figure 2 The present invention is a structural diagram of a splash-proof enclosure in a sludge cleaning device on a conveyor belt after filtration of a plate and frame filter press.

[0024] In the figure: 1-conveyor belt, 2-bracket, 3-first cross bar, 4-first scraper, 5-splash cover, 6-hopper, 7-mud discharge pipe, 8-low-level sedimentation tank, 9-second cross bar, 10-second scraper, 11-water pipe, 12-nozzle, 13-door, 14-water outlet pipe, 15-support leg, 16-mud truck, 17-water storage tank, 18-water outlet valve, 19-filter screen, 20-main mud discharge pipe, 21-mud storage tank, 22-mud discharge pipe, 23-pump, 24-mud discharge valve. DETAILED DESCRIPTION

[0025] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 , 2As shown, a sludge cleaning device for a conveyor belt after filtration of a plate and frame filter press comprises a bracket 2, a conveyor belt 1 is arranged on the bracket 2, a primary sludge scraping device for cleaning sludge is arranged on the bracket 2, the primary sludge scraping device is located below the end of the conveying direction of the conveyor belt 1, a sludge pulling vehicle 16 is arranged below the primary sludge scraping device, a hollow splash-proof enclosure 5 is arranged below the conveyor belt, the splash-proof enclosure 5 is arranged on the bracket 2 and close to the primary sludge scraping device, the splash-proof enclosure 5 is arranged vertically, and the outer surfaces of the upper ends of the splash-proof enclosure 5 are respectively fixed on both sides of the conveyor belt 1 On the opposite side of the bracket, a secondary scraper device and a water sprayer for cleaning sludge are provided in the splash-proof enclosure 5, and a low-level sedimentation tank 8 is provided below the splash-proof enclosure 5. A filter screen 19 is vertically provided at the bottom of the low-level sedimentation tank 8 and is divided into a water storage tank 17 and a sludge storage tank 21. The cleaned sludge enters the sludge storage tank 21, and an outlet pipe 14 is provided near the bottom of the water storage tank 17. The outlet pipe 14 is connected to the water sprayer at the end away from the water storage tank 17. Along the conveying direction of the outlet pipe 14, an outlet valve 18 and a pump 23 are sequentially provided on the outlet pipe 14.

[0027] A plurality of mud discharge pipes 22 are provided at the bottom of the mud storage tank 21, and the ends of the plurality of mud discharge pipes 22 away from the mud storage tank 21 are connected to the main mud discharge pipe 20, a hopper 6 is provided at the lower end of the splash-proof enclosure 5, the upper end surface of the hopper 6 coincides with the lower end surface of the splash-proof enclosure 5, the hopper 6 is funnel-shaped, a mud discharge pipe 7 is connected to the lower end of the hopper 6, and the mud discharge pipe 7 is connected to the mud storage tank 21 at one end away from the hopper 7, the splash-proof enclosure 5 is a visible material, and a door 13 is hinged on the splash-proof enclosure 5, a primary mud scraping device comprises a first cross bar 3 and a first mud scraping plate 4, the first cross bar 3 is horizontally arranged along the width direction of the conveyor belt 1, the two ends of the first cross bar 3 are respectively arranged on the opposite surfaces of the brackets 2 on both sides of the conveyor belt 1, one end of the first mud scraping plate 4 is fixedly connected to the first cross bar 3, and a gap is left between the other end of the first mud scraping plate 4 and the outer surface of the conveyor belt 1, the secondary mud scraping device comprises a second cross bar 9 and a first mud scraping plate 4. Two scraper blades 10, a second cross bar 9 is horizontally arranged along the width direction of the conveyor belt 1, and the two ends of the second cross bar 9 are respectively arranged on the opposite surfaces of the inner surface of the splash-proof cover 5. One end of the second scraper blade 10 is fixedly connected to the second cross bar 9, and the other end is in linear contact with the outer surface of the conveyor belt 1 along the width direction of the conveyor belt 1. The water spraying device includes a water pipe 11, which is horizontally arranged along the width direction of the conveyor belt 1. One end of the water pipe 11 is fixed on the inner surface of the splash-proof cover 5, and the other end passes through the splash-proof cover 5 and the bracket 2 in sequence and is connected to the end of the water outlet pipe 14 away from the water tank 17. A plurality of nozzles 12 are equidistantly arranged on the water pipe 11, and the nozzles 12 are arranged toward the second scraper blade 10. A plurality of legs 15 are symmetrically arranged on the lower end surfaces of the brackets 2 on both sides of the conveyor belt 1, a water outlet valve 18 is arranged on the water outlet pipe 14, and a plurality of mud discharge pipes 22 are each provided with a mud discharge valve 24.

[0028] Specifically, the residual sludge on the conveyor belt 1 has a high viscosity and is difficult to be completely removed at one time. The first scraper blade 4 in the primary scraper device cleans the conveyor belt 1 once to remove more than 90% of the sludge on the conveyor belt. At the same time, since the first scraper blade 4 is arranged at the end of the conveying direction of the conveyor belt, the sludge cleaned by the first scraper blade 4 can smoothly fall into the mud truck 16 and will not fall on the ground. The remaining sludge will not fall on the ground in a short time. The second scraper blade 10 in the secondary scraper device is in direct contact with the conveyor belt 1. The second scraper blade 10 thoroughly removes the residual sludge in time. The nozzle 12 on the water spray device flushes the second scraper blade 10 to clean the scraped sludge. The sludge flows along the water through the mud outlet pipe 7 into the mud storage tank 21 to prevent the sludge from falling on the ground. No manual cleaning is required. The splash-proof enclosure 5 prevents the sludge from splashing during the flushing process to avoid secondary pollution. After the sludge and water enter the sludge storage tank 21, the filter screen 19 separates the sludge and water, and the water passes through the filter screen 19 and enters the water storage tank 17. The water in the water storage tank 17 enters the water spraying device from the outlet pipe 14 to wash the sludge on the second scraper 10. The water can be reused. The splash-proof cover 5 is a visible material, and the workers can observe the situation inside the splash-proof cover 5 at any time. When there is a problem inside the splash-proof cover 5, the door 13 can be opened for processing. The mud discharge pipe 22 can clean the sludge in the sludge storage tank 21.

[0029] Specific operation process

[0030] The sludge cake is filtered by the plate and frame filter press and falls onto the conveyor belt 1. After the sludge cake falls onto the conveyor belt 1, it moves along with the conveyor belt 1. When it reaches the end of the conveying direction of the conveyor belt 1, most of the sludge falls into the mud pulling vehicle 16 below along with the conveyor belt 1. The sticky mud at the edge of the sludge cake remains on the conveyor belt 1. Then the sludge contacts the first scraper 4. The first scraper 4 removes more than 90% of the sludge. The cleaned sludge falls into the mud pulling vehicle 16. The remaining sludge enters the splash-proof enclosure 5 along the conveyor belt 1. The first scraper 4 is at a short distance from the splash-proof enclosure 5. During this period, the sludge will not fall to the ground. After the sludge enters the splash-proof enclosure 5 along the conveyor belt 1, the second scraper 10, the remaining sludge is thoroughly cleaned, and then the water outlet valve 18 on the water outlet pipe 14 is opened, and the pump 23 is started. The water in the water storage tank 17 flows out from the water outlet pipe 14, and is transported to the water delivery pipe 11 through the pump 23. The water is sprayed from the nozzle 12 to wash the second scraper 10, and the sludge is washed down. The sludge flows into the receiving hopper 6 along the water flow, and enters the mud outlet pipe 7 from the receiving hopper 6, and finally enters the sludge storage tank 21. The water passes through the filter screen 19 and returns to the water storage tank 17 again. The sludge remains in the sludge storage tank 21. When the sludge in the sludge storage tank 21 reaches a certain amount, the sludge discharge valve 24 on the sludge discharge pipe 22 is opened, and the sludge is cleaned through the sludge discharge pipe 22.

[0031] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A sludge cleaning device for conveyor belt after filtration of a plate and frame filter press, characterized in that: It comprises a bracket (2), a conveyor belt (1) is provided on the bracket (2), a primary mud scraping device for cleaning mud is provided on the bracket (2), the primary mud scraping device is located below the end of the conveyor belt (1) in the conveying direction, and a mud pulling vehicle (16) is provided below the primary mud scraping device; A hollow splash-proof enclosure (5) is provided below the conveyor belt. The splash-proof enclosure (5) is provided on the bracket (2) and is close to the primary sludge scraping device. The splash-proof enclosure (5) is vertically arranged. A secondary sludge scraping device and a water spraying device for cleaning sludge are provided inside the splash-proof enclosure (5). A low-position sedimentation tank (8) is provided below the splash-proof enclosure (5); The bottom of the low-level sedimentation tank (8) is vertically provided with a filter screen (19) and is divided into a water storage tank (17) and a sludge storage tank (21). The cleaned sludge enters the sludge storage tank (21). The water storage tank (17) is provided with a water outlet pipe (14) near the bottom. The end of the water outlet pipe (14) away from the water storage tank (17) is connected to a water spray device.

2. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: A plurality of mud discharge pipes (22) are provided at the bottom of the mud storage tank (21), and the ends of the plurality of mud discharge pipes (22) away from the mud storage tank (21) are all connected to a main mud discharge pipe (20).

3. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: A material receiving hopper (6) is provided at the lower end of the splash-proof enclosure (5), the upper end surface of the material receiving hopper (6) coincides with the lower end surface of the splash-proof enclosure (5), the lower end of the material receiving hopper (6) is connected to a mud discharge pipe (7), and the end of the mud discharge pipe (7) away from the material receiving hopper (6) is connected to a mud storage tank (21).

4. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 3, characterized in that: The receiving hopper (6) is funnel-shaped.

5. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: The splash-proof enclosure (5) is made of visible material.

6. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: A door (13) is hingedly connected to the splash-proof enclosure (5).

7. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: The primary scraper device comprises a first scraper blade (4), and a gap is left between one end of the first scraper blade (4) and the outer surface of the conveyor belt (1).

8. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: The secondary scraper device comprises a second scraper blade (10), one end of the second scraper blade (10) being in linear contact with the outer surface of the conveyor belt (1) along the width direction of the conveyor belt (1).

9. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 1, characterized in that: The water spray device comprises a water pipe (11), wherein the water pipe (11) is horizontally arranged along the width direction of the conveyor belt (1), one end of the water pipe (11) is fixed on the inner surface of the splash-proof enclosure (5), and the other end passes through the splash-proof enclosure (5) and the bracket (2) in sequence and is connected to the end of the water outlet pipe (14) away from the water storage tank (17), and a plurality of nozzles (12) are arranged at equal distances on the water pipe (11), and the nozzles (12) are arranged toward the second scraper blade (10).

10. The device for cleaning sludge from a conveyor belt of a plate and frame filter press after filtration according to claim 2, characterized in that: The water outlet pipe (14) is provided with a water outlet valve (18), and a plurality of mud discharge pipes (22) are provided with mud discharge valves (24).

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