Filter cloth belt dehydrator

Abstract

The utility model discloses a filter cloth belt dehydrator which comprises a machine body and a driving roller, a filter belt is assembled on the outer side of the driving roller, a vacuum box located at the bottom of the filter belt is installed in the machine body, the machine body is further provided with a filter cloth belt through a filter cloth roller shaft, and a blowing and beating system used for blowing and beating the filter cloth belt is arranged in the machine body. The blowing and beating system comprises a compressor, an air source pipeline, an air storage bottle and air nozzles, the compressor is communicated with the air storage bottle through the air source pipeline, the air storage bottle is communicated with the air nozzles, and air valves are installed between the air storage bottle and the air nozzles. According to the filter cloth belt dehydrator, high-pressure gas is blown out through the air nozzles, strong airflow enables the filter cloth belt to beat and bounce off attached solid residues, so that the solid residues on the filter cloth belt are reduced, more solids can be recycled, meanwhile, the content of the solid residues in sewage during cleaning is reduced, the cleaning amount and water can be reduced, and the cleaning efficiency is improved. The sewage amount and the sewage treatment difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cloth belt dehydrators. Background Art

[0002] Belt vacuum dehydrator is a high-efficiency solid-liquid separation equipment used in many industries. It uses vacuum suction to dehydrate and has high efficiency, large processing capacity, stable operation and easy maintenance. However, attention should be paid to material adaptability and vacuum stability. It is widely used in dehydration of coal slime, coal gangue, etc. It is also used in chemical, metallurgical, electric power, building materials and other fields. It is necessary to select appropriate processes to maintain stable operation and maintenance of the equipment.

[0003] After the belt vacuum dehydrator is dehydrated and dried by the vacuum pump, solids are contaminated on the filter cloth. The filter cloth has the advantage of being reused, but before entering the next cycle, the residue on the filter cloth needs to be cleaned, which is cleaned by the cleaning system in the prior art. The cleaned sewage is discharged after sewage treatment, resulting in a large amount of solid flow loss, and the solid content in the sewage is high, which increases the cost of sewage treatment and the difficulty of treatment. For this reason, this application is proposed to reduce the gypsum residue on the filter cloth. Utility Model Content

[0004] The utility model aims to provide a filter cloth belt dehydrator to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filter cloth belt dehydrator comprises a machine body and a driving roller, a filter belt is mounted on the outside of the driving roller, a vacuum box is mounted at the bottom of the filter belt in the machine body, a filter cloth belt is mounted on the machine body through a filter cloth roller shaft, and a blowing system for blowing the filter cloth belt is arranged in the machine body;

[0007] The blowing system includes a compressor, an air source pipeline, a gas cylinder and an air nozzle. The compressor is connected to the gas cylinder through the air source pipeline, the gas cylinder is connected to multiple air nozzles, and an air valve is installed between the gas cylinder and the air nozzle.

[0008] As a further solution of the utility model: the vacuum box is connected to the automatic liquid drain tank, the automatic liquid drain tank is connected to the vacuum pump and the countercurrent washing liquid tank, and the exhaust end of the vacuum pump is connected to the air intake end of the compressor through a circulation pipeline.

[0009] As a further solution of the utility model: a main valve is installed on the gas source pipeline, and a pressure gauge is provided on the gas storage cylinder.

[0010] As a further solution of the utility model: a driven wheel and a tensioning wheel for controlling the tensioning of the filter cloth belt are installed in the machine body, and the tensioning wheel is installed with the machine body so as to be vertically movable up and down through a bearing seat and a spring member.

[0011] As a further solution of the utility model: a grille is installed in the machine body, a blowing area is between the driven wheel and the tensioning wheel, the grille and the filter cloth belt located in the blowing area are parallel to each other, and the filter belt can hit the grille when the air nozzle blows out high-pressure gas.

[0012] As a further solution of the utility model: a material trough is installed below the blowing area and the feeding end of the filter cloth belt.

[0013] As a further solution of the utility model: it also includes a cleaning system, which consists of a cleaning liquid reflux pipeline, a cleaning box, and a cleaning pump. The cleaning liquid output pipeline is connected to a cleaning box installed on the filter cloth belt for cleaning the filter cloth belt through the cleaning pump. The cleaning box is provided with a cleaning liquid reflux pipeline connected to a countercurrent washing liquid tank, and the cleaning liquid output pipeline is also connected to the countercurrent washing liquid tank.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The filter cloth belt dewatering machine blows out high-pressure gas through the air nozzle. The powerful airflow makes the filter cloth belt beat and bounce off the attached solid residues to reduce the solid residues on the filter cloth belt. It can not only recover more solids, but also reduce the content of solid residues in the sewage during cleaning, and can also reduce the cleaning amount and water consumption, sewage volume and the difficulty of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a filter cloth belt dehydrator;

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle.

[0018] In the figure: 1. driving roller; 2. filter belt; 3. vacuum box; 4. blowing filter cloth belt; 5. deviation corrector; 6. automatic drain tank; 7. vacuum pipeline; 8. cleaning liquid reflux pipeline; 9. cleaning pump; 10. cleaning box; 11. cleaning liquid output pipeline; 12. sewage pipeline; 13. sewage pump; 14. vacuum pump; 15. circulation pipeline; 16. compressor; 17. air source pipeline; 18. main valve; 19. driven wheel; 20. tensioning wheel; 21. grille; 22. gas storage bottle; 23. barometer; 24. air nozzle; 25. material trough. DETAILED DESCRIPTION

[0019] See also Figure 1 and 2In the embodiment of the utility model, a filter cloth belt dehydrator comprises a machine body and a driving roller 1, a filter belt 2 is assembled on the outside of the driving roller 1, a vacuum box 3 located at the bottom of the filter belt 2 is assembled in the machine body, a filter cloth belt 4 is assembled in the machine body through a filter cloth roller shaft, and a deviation correcting machine 5 is also provided for the filter cloth belt 4 to maintain the rolling position of the filter cloth belt 4, and a blowing system for blowing the filter cloth belt 4 is arranged in the machine body;

[0020] The blowing system includes a compressor 16, an air source pipeline 17, a gas cylinder 22 and an air nozzle 24. The compressor 16 is connected to the gas cylinder 22 through the air source pipeline 17, and the gas cylinder 22 is connected to multiple air nozzles 24. An air valve is installed between the gas cylinder 22 and the air nozzle 24. The high-pressure gas is sent into the gas cylinder 22 through the air source pipeline 17 by the compressor 16. The high-pressure gas in the gas cylinder 22 is blown out through the air nozzle 24 after the air valve is opened, and blown on the filter cloth belt 4, so that the filter cloth belt 4 vibrates and the solid residues such as gypsum contaminated thereon are bounced off. Under the control of the controller, the air valve is opened and closed quickly and frequently, constantly causing the filter cloth belt 4 to vibrate and bounce off the contaminated solids, thereby reducing the contamination residues on the filter cloth belt 4. Not only can more solids be recovered, but also the content of solid residues in sewage during cleaning is reduced, and the cleaning amount and water use, sewage amount and sewage treatment difficulty can also be reduced.

[0021] In a preferred embodiment, the vacuum box 3 is connected to the automatic drainage tank 6, and the number of automatic drainage tanks 6 is multiple. Vacuum water is absorbed in different areas. The multiple automatic drainage tanks 6 are interconnected through the vacuum pipeline 7. The automatic drainage tank 6 is connected to the vacuum pump 14 and the countercurrent washing pool. The exhaust end of the vacuum pump 14 is connected to the air inlet end of the compressor 16 through the circulation pipeline 15. The gas used for blowing is the gas recovered in the drainage tank 6. The gas is filtered to reduce the dust mixed therein, saving the cost of installing an air filter at the front end of the compressor 16. A sewage pipeline 12 and a sewage pump 13 are also provided on the countercurrent washing pool to pump out excess sewage for treatment.

[0022] In a preferred embodiment, a main valve 18 is installed on the gas source pipeline 17, and a pressure gauge 23 is provided on the gas storage cylinder 22. The pressure gauge 23 observes the pressure change in the gas cylinder to keep it within a controllable range. When the pressure is too high, it can be controlled by adjusting the main valve 18 and the power of the compressor 16.

[0023] In a preferred embodiment, a driven wheel 19 and a tensioning wheel 20 for controlling the tensioning of the filter cloth belt 4 are installed in the machine body. The tensioning wheel 20 can be installed with the machine body by vertically moving up and down through a bearing seat and a spring member. When the filter cloth belt 4 is blown, it has a certain stretching. In order to avoid damage to the filter cloth belt 4 caused by excessive compression, the tensioning wheel 20 is arranged to have a structure that can rebound up and down. After the air pressure disappears, the rebound of the tensioning wheel 20 can achieve the effect of secondary cleaning of residues.

[0024] In a preferred embodiment, a grille 21 is installed in the machine body, and a blowing area is formed between the driven wheel 19 and the tensioning wheel 20. The grille 21 is parallel to the filter cloth belt 4 located in the blowing area. When the air nozzle 24 blows out high-pressure gas, the filter belt 2 can hit the grille 21. The internal partitions of the grille 21 are arranged longitudinally, which is conducive to the falling of solid residues. The filter cloth belt 4 hits the grille 21 to knock off the solid matter, which further improves the cleaning effect.

[0025] In a preferred embodiment, a material trough 25 is installed below the blowing area and the unloading end of the filter cloth belt 4. The area of ​​the material trough 25 is increased, and the solid residues that fall naturally and are blown off can be collected.

[0026] In a preferred embodiment, it also includes a cleaning system, which consists of a cleaning liquid return pipeline 8, a cleaning box 10, and a cleaning pump 9. The cleaning liquid output pipeline 11 is connected to the cleaning box 10 installed on the filter cloth belt 4 for cleaning the filter cloth belt 4 through the cleaning pump 9. The cleaning box 10 is provided with a cleaning liquid return pipeline 8 connected to a countercurrent washing liquid pool, and the cleaning liquid output pipeline 11 is also connected to the countercurrent washing liquid pool. The cleaning system should be set in the area after blowing and beating, and the filter cloth belt 4 is cleaned after blowing and beating.

[0027] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0028] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A filter cloth belt dehydrator, comprising a machine body and a driving roller (1), a filter belt (2) being mounted on the outside of the driving roller (1), a vacuum box (3) being mounted on the bottom of the filter belt (2) in the machine body, and a filter cloth belt (4) being mounted on the machine body via a filter cloth roller shaft, characterized in that: A blowing system for blowing the filter cloth belt (4) is provided in the machine body; The blowing system comprises a compressor (16), an air source pipeline (17), a gas storage cylinder (22) and an air nozzle (24); the compressor (16) is connected to the gas storage cylinder (22) via the air source pipeline (17); the gas storage cylinder (22) is connected to a plurality of air nozzles (24); and an air valve is installed between the gas storage cylinder (22) and the air nozzle (24).

2. A filter cloth belt dehydrator according to claim 1, characterized in that: The vacuum box (3) is connected to an automatic liquid drain tank (6), the automatic liquid drain tank (6) is connected to a vacuum pump (14) and a countercurrent washing liquid pool, and the exhaust end of the vacuum pump (14) is connected to the intake end of a compressor (16) via a circulation pipeline (15).

3. A filter cloth belt dehydrator according to claim 1, characterized in that: A main valve (18) is installed on the gas source pipeline (17), and a pressure gauge (23) is provided on the gas storage cylinder (22).

4. A filter cloth belt dehydrator according to claim 1, characterized in that: A driven wheel (19) and a tensioning wheel (20) for controlling the tensioning of the filter cloth belt (4) are installed in the machine body. The tensioning wheel (20) is installed on the machine body via a bearing seat and a spring member so as to be able to move vertically up and down.

5. A filter cloth belt dehydrator according to claim 4, characterized in that: A grille (21) is installed in the machine body, a blowing zone is formed between the driven wheel (19) and the tension wheel (20), the grille (21) and the filter cloth belt (4) located in the blowing zone are parallel to each other, and the filter belt (2) can hit the grille (21) when the air nozzle (24) blows out high-pressure gas.

6. A filter cloth belt dehydrator according to claim 5, characterized in that: A material trough (25) is installed below the blowing area and the discharge end of the filter cloth belt (4).

7. The filter cloth belt dehydrator according to claim 1, characterized in that: The invention also comprises a cleaning system, which comprises a cleaning liquid return pipeline (8), a cleaning box (10), and a cleaning pump (9). The cleaning liquid output pipeline (11) is connected to a cleaning box (10) installed on the filter cloth belt (4) for cleaning the filter cloth belt (4) through the cleaning pump (9). The cleaning box (10) is provided with a cleaning liquid return pipeline (8) connected to a countercurrent cleaning liquid pool. The cleaning liquid output pipeline (11) is also connected to the countercurrent cleaning liquid pool.

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