Filter cloth cleaning device of vacuum belt dehydrator

Abstract

The utility model relates to a filter cloth cleaning device of a vacuum belt dehydrator, which comprises a scraper component comprising a front scraper and a rear scraper, an included angle of 50-70 degrees is formed between the front scraper and the surface of filter cloth, and an included angle of 20-40 degrees is formed between the rear scraper and the surface of the filter cloth; the spraying assembly is arranged behind the scraper assembly and comprises a plurality of nozzles which are distributed at intervals along the width direction of the filter cloth; the vibration assembly is arranged above the spraying assembly and comprises a vibration support, a vibration plate and a vibration motor, the vibration motor is arranged on the vibration plate, and the vibration plate is attached to the upper surface of the filter cloth and covers the spraying area of the spraying assembly. By arranging the included angle between the front scraper and the rear scraper, most solid impurities and residues on the surface of the filter cloth can be effectively scraped; the spraying assembly is matched with the vibration assembly, impurities on the surface of the filter cloth can be loosened through the vibration effect, spraying liquid is promoted to better permeate and wash the filter cloth, the cleaning effect is further improved, and dirt residues are reduced.

Description

Technical Field

[0001] This utility model relates to the field of vacuum belt dewatering machine technology, and in particular to a filter cloth cleaning device for a vacuum belt dewatering machine. Background Technology

[0002] Vacuum belt dewatering machines achieve solid-liquid separation through vacuum negative pressure. The filter cloth, as the core filtration medium, is prone to pore blockage due to prolonged contact with sludge and particulate matter. High-pressure washers are typically used to rinse the filter cloth to address this blockage issue.

[0003] Existing filter cloth cleaning devices, such as the Chinese utility model patent with authorization announcement number CN221656016U, disclose a cleaning device for the filter cloth turning point at the discharge port of a vacuum belt dewatering machine. When the vacuum belt dewatering machine is running, the flushing device is activated. The flushing device is installed on the upper end of the guide plate and flushes towards the guide surface. When plaster on the filter cloth falls onto the guide plate, the flushing device can promptly wash away the plaster on the guide plate, which can effectively prevent excessive plaster accumulation that cannot be flushed in time. However, this device has the following problems: low cleaning efficiency, it can only remove surface dirt and is ineffective against microparticles embedded deep in the filter cloth; high water consumption and serious waste of resources. Utility Model Content

[0004] The purpose of this invention is to provide a filter cloth cleaning device for a vacuum belt dewatering machine to solve the problems mentioned in the background art.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution: a filter cloth cleaning device for a vacuum belt dewatering machine, comprising:

[0006] A scraper assembly is disposed below the filter cloth and includes a front scraper and a rear scraper arranged sequentially along the running direction of the filter cloth. The front scraper forms an angle of 50-70° with the surface of the filter cloth, and the rear scraper forms an angle of 20-40° with the surface of the filter cloth.

[0007] The spray assembly is located behind the scraper assembly and includes a plurality of nozzles spaced apart along the width direction of the filter cloth.

[0008] A vibration assembly, disposed above the spray assembly, includes a vibration bracket, a vibration plate, and a vibration motor. The vibration motor is disposed on the vibration plate, which is attached to the upper surface of the filter cloth and covers the spraying area of ​​the spray assembly.

[0009] Preferably, the scraper assembly further includes a scraper bracket, the front scraper is mounted on the mounting bracket via the scraper bracket, and a cylinder is provided between the scraper bracket and the mounting bracket.

[0010] Preferably, a buffer spring is provided at the end of the piston rod of the cylinder, and the other end of the buffer spring is connected to the scraper bracket.

[0011] Preferably, the scraper assembly further includes a front redirecting roller and a rear redirecting roller, the rear redirecting roller being disposed above the front redirecting roller, and the rear scraper being disposed on one side of the front redirecting roller.

[0012] Preferably, the nozzle is inclined relative to the surface of the filter cloth, and its spray direction is forward and upward.

[0013] Preferably, a baffle is provided at the outlet of the nozzle, a fixing sleeve is fixedly provided on the outside of the nozzle, one end of the baffle is hinged to the fixing sleeve, and a return spring is connected between the fixing sleeve and the baffle.

[0014] Preferably, the vibrating plate is provided with guide rods at both ends, the guide rods are inserted into the vibrating support, and damping springs are fitted on the guide rods.

[0015] Preferably, the lower surface of the vibrating plate is provided with raised ridges, which are distributed at intervals along the running direction of the filter cloth.

[0016] The beneficial effects of this utility model are:

[0017] This invention, through the angled arrangement of the front and rear scrapers, can effectively scrape away most of the solid impurities and residues on the surface of the filter cloth; thus, before the filter cloth enters the spraying stage, most of the attached substances have been removed, providing a better foundation for subsequent cleaning.

[0018] The spray assembly, in conjunction with the vibration assembly, loosens impurities on the surface of the filter cloth through vibration, promoting better penetration and rinsing of the filter cloth by the spray liquid, thereby improving the cleaning effect and reducing dirt residue. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the scraper assembly in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram showing the distribution of the spray assembly and the vibration assembly in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the nozzle structure in an embodiment of this utility model;

[0023] In the diagram: 1-Mounting frame, 2-Scraper assembly, 201-Front scraper, 202-Rear scraper, 203-Scraper bracket, 204-Cylinder, 205-Buffer spring, 206-Front redirecting roller, 207-Rear redirecting roller, 3-Spray assembly, 301-Water supply pipe, 302-Nozzle, 303-Fixing sleeve, 304-Baffle plate, 305-Reset spring, 4-Vibration assembly, 401-Vibration bracket, 402-Vibration plate, 403-Vibration motor, 404-Guide rod, 405-Damping spring, 406-Raised strip, 5-Water baffle, 6-Filter cloth. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0026] Example:

[0027] like Figure 1 and Figure 2 As shown, a filter cloth cleaning device for a vacuum belt dewatering machine includes: a mounting frame 1, a scraper assembly 2, a spray assembly 3, and a vibration assembly 4. The scraper assembly 2 is disposed below the filter cloth 6 and is used to scrape off dirt from the lower surface of the filter cloth 6. It includes a front scraper 201 and a rear scraper 202 arranged sequentially along the running direction of the filter cloth 6. The angle α formed between the front scraper 201 and the surface of the filter cloth 6 is 50-70°, and the angle b formed between the rear scraper 202 and the surface of the filter cloth 6 is 20-40°.

[0028] like Figure 2 As shown, the scraper assembly 2 also includes a scraper bracket 203. The front scraper 201 is mounted on the mounting frame 1 via the scraper bracket 203. The scraper bracket 203 and the mounting frame 1 are hinged. A cylinder 204 is provided between the scraper bracket 203 and the mounting frame 1. The cylinder 204 drives the scraper bracket 203 and the front scraper 201 to swing up and down, so that the front scraper 201 is in close contact with the surface of the filter cloth 6.

[0029] A buffer spring 205 is provided at the end of the piston rod of cylinder 204, and the other end of the buffer spring 205 is connected to the scraper bracket 203.

[0030] The scraper assembly 2 also includes a front deflector roller 206 and a rear deflector roller 207. The rear deflector roller 207 is positioned above the front deflector roller 206, and the rear scraper 202 is positioned to one side of the front deflector roller 206. When the filter cloth 6 passes through the front deflector roller 206 and the rear deflector roller 207, the filter cloth 6 forms a certain wrap angle with the front deflector roller 206. At the wrap angle, the filter cloth 6 is in a bent and stretched state, making it easy for the rear scraper 202 to scrape off the exposed dirt.

[0031] like Figure 1 and Figure 3 As shown, the spray assembly 3 is located behind the scraper assembly 2 and includes multiple nozzles 302 spaced apart along the width of the filter cloth. The nozzles 302 are supplied with water by the water supply pipe 301 to rinse the lower surface of the filter cloth 6. The water supply pipe 301 is located below the filter cloth 6 and its two ends are fixedly installed on the mounting bracket 1.

[0032] The vibration assembly 4 is positioned above the spray assembly 3 and includes a vibration bracket 401, a vibration plate 402, and a vibration motor 403. The two ends of the vibration bracket 401 are fixedly connected to the mounting frame 1. The vibration motor 403 is positioned on the vibration plate 402. The vibration plate 402 is attached to the upper surface of the filter cloth 6 and covers the spraying area of ​​the spray assembly 3.

[0033] The vibrating plate 402 has guide rods 404 at both ends. The guide rods 404 are inserted into the vibrating bracket 401. The guide rods 404 are fitted with damping springs 405. The two ends of the damping springs 405 are fixedly connected to the vibrating bracket 401 and the vibrating plate 402, respectively.

[0034] like Figure 3 As shown, the lower surface of the vibrating plate 402 is provided with raised ribs 406, which are distributed at intervals along the running direction of the filter cloth 6.

[0035] The nozzle 302 is inclined relative to the surface of the filter cloth, and its spray direction is forward and upward. The angle c formed between the spray direction and the surface of the filter cloth 6 is 45-60°.

[0036] like Figure 4 As shown, a baffle 304 is provided at the outlet of nozzle 302, and a fixing sleeve 303 is fixedly provided on the outside of nozzle 302. One end of the baffle 304 is hinged to the fixing sleeve 303, and a return spring 305 is connected between the fixing sleeve 303 and the baffle 304. In the non-working state, the baffle 304 is in a horizontal position, blocking the outlet of nozzle 302 to prevent dirt or mud from entering nozzle 302. In the working state, the high-speed water flow from nozzle 302 pushes the baffle 304 to one side. Once the water flow stops, the baffle 304 returns to the horizontal position under the action of the return spring 305.

Claims

1. A filter cloth cleaning device for a vacuum belt dewatering machine, characterized in that, include: The scraper assembly (2) is located below the filter cloth and includes a front scraper (201) and a rear scraper (202) arranged sequentially along the running direction of the filter cloth. The front scraper (201) forms an angle of 50-70° with the surface of the filter cloth, and the rear scraper (202) forms an angle of 20-40° with the surface of the filter cloth. The spray assembly (3) is located behind the scraper assembly (2) and includes a plurality of nozzles (302) spaced apart along the width direction of the filter cloth. The vibration assembly (4) is located above the spray assembly (3) and includes a vibration bracket (401), a vibration plate (402) and a vibration motor (403). The vibration motor (403) is located on the vibration plate (402), which is attached to the upper surface of the filter cloth and covers the spraying area of ​​the spray assembly (3).

2. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 1, characterized in that: The scraper assembly (2) also includes a scraper bracket (203), the front scraper (201) is mounted on the mounting frame (1) via the scraper bracket (203), and a cylinder (204) is provided between the scraper bracket (203) and the mounting frame (1).

3. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 2, characterized in that: The piston rod end of the cylinder (204) is provided with a buffer spring (205), and the other end of the buffer spring (205) is connected to the scraper bracket (203).

4. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 1, characterized in that: The scraper assembly (2) further includes a front redirecting roller (206) and a rear redirecting roller (207), the rear redirecting roller (207) being disposed above the front redirecting roller (206), and the rear scraper (202) being disposed on one side of the front redirecting roller (206).

5. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 1, characterized in that: The nozzle (302) is inclined relative to the surface of the filter cloth, and its spraying direction is forward and upward.

6. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 5, characterized in that: A baffle (304) is provided at the outlet of the nozzle (302), and a fixing sleeve (303) is fixedly provided on the outside of the nozzle (302). One end of the baffle (304) is hinged to the fixing sleeve (303), and a return spring (305) is connected between the fixing sleeve (303) and the baffle (304).

7. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 1, characterized in that: The vibrating plate (402) is provided with guide rods (404) at both ends. The guide rods (404) are inserted into the vibrating bracket (401). A damping spring (405) is fitted on the guide rods (404).

8. The filter cloth cleaning device for a vacuum belt dewatering machine according to claim 7, characterized in that: The lower surface of the vibrating plate (402) is provided with raised ribs (406), which are distributed at intervals along the running direction of the filter cloth.

Images