A disc belt filter

Abstract

This utility model relates to the field of wastewater treatment technology and discloses a disc filter press, including a filter press. Gas-water separation pipes are installed on both the front and rear sides of the filter press. Gas-water separators are threadedly connected to the front ends of the two gas-water separation pipes on opposite sides. An air intake pipe is threadedly connected to the top of the gas-water separator. A vacuum pump is threadedly connected to the rear end of the air intake pipe. Two exhaust pipes are threadedly connected to the top left side of the vacuum pump. An air storage tank is threadedly connected to the front ends of the two exhaust pipes. A back-blowing air pipe is threadedly connected to the top of the air storage tank. The back-blowing air pipes are fixedly connected to the front and rear sides of the filter press respectively. In this utility model, a motor drives the vacuum pump. Its exhaust gas is purified and dried by an oil-water separator, stored in the air storage tank, and then sent to the filter press through the back-blowing air pipe, replacing the blower system. The vacuum pump simultaneously completes water pumping and air supply, simplifying the structure, reducing electricity costs, and improving economic efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a disc filter press. Background Technology

[0002] Disc belt filter press is an environmental protection device used for solid-liquid separation. It is widely used in the field of wastewater treatment containing dust. It uses filter media to trap dust in wastewater to form sludge, which is then collected and processed by the unloading mechanism. It features high separation efficiency and convenient operation, and can meet the large-scale solid-liquid separation needs of industrial wastewater pretreatment, dust recovery and other scenarios.

[0003] Traditional disc belt filters typically consist of a filter body, a vacuum pump, a blower system, and a discharge device. During operation, dust-laden wastewater enters the filter through the feed pipe. The vacuum pump creates a vacuum, allowing water to pass through the filter bags, while dust residue forms sludge. The blower system generates airflow to blow off the sludge from the filter bags, which is then collected by a discharge scraper. The entire system achieves solid-liquid separation and discharge through the coordinated action of multiple components.

[0004] Currently, traditional disc filter presses require separate blower systems and vacuum pumps to treat dusty wastewater. This results in complex equipment structures, additional cost for blower purchases, higher operating costs due to the dual-system operation, and the lack of treatment for vacuum pump exhaust. Furthermore, the high humidity of the exhaust gas may affect the dust removal effect from the filter bags, leading to insufficient overall economic efficiency and practicality. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a disc belt filter, which aims to improve the problems of complex structure, high cost, high energy consumption and insufficient practicality of traditional disc belt filters in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A disc-type belt filter includes a filter, with steam-water separation pipes installed on both the front and rear sides of the filter. A steam-water separator is threaded to the front end of each of the two steam-water separation pipes on opposite sides. A suction pipe is threaded to the top of the steam-water separator. A vacuum pump is threaded to the rear end of the suction pipe. Two exhaust pipes are threaded to the top left side of the vacuum pump. A gas storage tank is threaded to the front end of each of the two exhaust pipes. A back-blowing pipe is threaded to the top of the gas storage tank. The back-blowing pipe is fixedly connected to the front and rear sides of the filter, respectively. As a further description of the above technical solution: Two exhaust pipes are threaded to each other on opposite sides, and two filter pipes are threaded to each other on opposite sides, and an oil-water separator is threaded to each other on opposite sides. A feed pipe is threaded to the right side of the filter, and multiple discharge scrapers are threaded to the right side inside the filter. Filter discs are provided on opposite sides of the multiple discharge scrapers. As a further description of the above technical solution: The filter is threadedly connected to the bottom right side of the bottom and a discharge chute is fixedly connected to the bottom left side of the bottom. A conveyor belt is installed at the bottom of the discharge chute. As a further description of the above technical solution: The gas-water separator is threadedly connected to a drain tank on both the front and rear sides of its bottom, and the drain tank is threadedly connected to a drain outlet at its bottom. As a further description of the above technical solution: A support frame is fixedly connected to the bottom outer side of the gas-water separator, and a water tank is fixedly connected to the bottom of the support frame; As a further description of the above technical solution: The vacuum pump is meshed with a motor on its right side and a drain valve is threadedly connected to its left side. As a further description of the above technical solution: The vacuum pump is provided with an air intake port on the top right side, and the rear end of the air intake pipe is threaded to the top of the air intake port. As a further description of the above technical solution: An exhaust port is provided on the top left side of the vacuum pump, and the rear end of the exhaust pipe is threaded to the top of the exhaust port.

[0007] This utility model has the following beneficial effects: 1. In this utility model, a vacuum pump is driven by a motor. The exhaust gas from the vacuum pump is transported to an oil-water separator for purification and drying through an exhaust pipe. After being stored in a storage tank, it is sent to a filter through a back-blowing pipe. This achieves the effect of replacing the blower system with a vacuum pump exhaust, thus saving the cost of a blower.

[0008] 2. In this utility model, the vacuum pump simultaneously completes the dual work of water suction and backflushing gas supply, eliminating the need to start the blower. Combined with the oil-water separator, the backflushing gas is kept dry to efficiently blow off the dust from the filter bag, thereby simplifying the equipment structure, reducing power consumption during operation, and improving the economic efficiency of operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main body of a disc-type belt filter proposed in this utility model; Figure 2 This is a schematic diagram of the conveyor belt structure of a disc belt filter proposed in this utility model; Figure 3 This is a schematic diagram of the steam-water separation pipeline of a disc-type belt filter proposed in this utility model; Figure 4 This is a schematic diagram of the structure of a disc-type belt filter steam-water separator proposed in this utility model; Figure 5 This is a schematic diagram of the structure of a vacuum pump for a disc-type belt filter proposed in this utility model; Figure 6 This is a schematic diagram of the structure of an oil-water separator for a disc-type belt filter proposed in this utility model.

[0010] Legend: 1. Filter; 2. Gas-water separation pipeline; 3. Gas-water separator; 4. Intake pipeline; 5. Vacuum pump; 6. Exhaust pipeline; 7. Gas storage tank; 8. Backflush pipeline; 9. Filter pipeline; 10. Oil-water separator; 11. Feed pipeline; 12. Discharge scraper; 13. Filter disc; 14. Underflow pipeline; 15. Discharge chute; 16. Drain tank; 17. Drain outlet; 18. Support frame; 19. Water tank; 20. Motor; 21. Drain valve; 22. Intake port; 23. Exhaust port; 24. Conveyor belt. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a disc-type belt filter, including a filter 1. Gas-liquid separation pipes 2 are installed on both the front and rear sides of the filter 1. The gas-liquid separation pipes 2 connect the filter 1 and a gas-liquid separator 3, serving to transport a gas-liquid mixed medium. The gas-liquid separator 3 is threadedly connected to the front and rear sides of the two gas-liquid separation pipes 2. A drain tank 16 is threadedly connected to the bottom of the gas-liquid separator 3 on both the front and rear sides. A drain outlet 17 is threadedly connected to the bottom of the drain tank 16. A support frame 18 is fixedly connected to the outer side of the bottom of the gas-liquid separator 3. A water tank 19 is fixedly connected to the bottom of the support frame 18. A motor 20 is meshed with the right side of a vacuum pump 5. A drain valve 21 is threadedly connected to the left side of the vacuum pump 5. The drain valve 21 controls the discharge of liquid from the vacuum pump 5 and can be opened or closed as needed to achieve liquid discharge control.

[0013] The vacuum pump 5 has an air intake port 22 on the top right side, and the rear end of the air intake pipe 4 is threaded to the top of the air intake port 22. The vacuum pump 5 has an exhaust port 23 on the top left side, and the rear end of the exhaust pipe 6 is threaded to the top of the exhaust port 23. The vapor-water separator 3 has an air intake pipe 4 threaded to its top.

[0014] Reference Figures 1-6 The intake pipe 4 connects the gas-water separator 3 and the vacuum pump 5, and is used to transport the gas separated by the gas-water separator 3 to the vacuum pump 5. The vacuum pump 5 is threaded to the rear end of the intake pipe 4. Two exhaust pipes 6 are threaded to the top left of the vacuum pump 5. The gas storage tank 7 is threaded to the front end of the two exhaust pipes 6. The back-blowing pipe 8 is threaded to the top of the gas storage tank 7. The back-blowing pipe 8 is fixedly connected to the front and rear sides of the filter 1. The back-blowing pipe 8 connects the gas storage tank 7 and the filter 1, and transports the gas stored in the gas storage tank 7 to the filter 1 in the form of back-blowing air. It can be used to perform back-blowing cleaning and other operations on the filter components in the filter 1. Two filter pipes 9 are threaded to the opposite side of the two exhaust pipes 6. An oil-water separator 10 is threaded to the opposite side of the two filter pipes 9. The oil-water separator 10 separates the oil and water in the gas from the filter pipes 9, removing impurities such as oil and water from the gas, making the gas purer.

[0015] Reference Figure 1 and Figure 2 The filter 1 has a feed pipe 11 threadedly connected to the right side. Inside the filter 1, multiple discharge scrapers 12 are threadedly connected to the right side. Filter plates 13 are set on opposite sides of the multiple discharge scrapers 12. The discharge scrapers 12 scrape off the filtered solid material on the filter plates 13 to achieve the discharge operation. The bottom right side of the filter 1 has an underflow pipe 14 threadedly connected to it. The bottom left side of the filter 1 has a discharge chute 15 fixedly connected to it. A conveyor belt 24 is set at the bottom of the discharge chute 15. The conveyor belt 24 is used to transport the material falling from the discharge chute 15 to the designated position.

[0016] Working principle: First, the material to be filtered enters the filter 1 through the feed pipe 11. Under the action of the vacuum pump 5, a negative pressure environment is formed inside the filter 1. Under the action of negative pressure, the liquid in the material passes through the filter disc 13 and enters the gas-liquid separator 3 through the gas-liquid separation pipe 2, realizing the initial separation of gas and liquid. The separated liquid is collected in the drain tank 16 and finally discharged into the water tank 19 through the drain outlet 17; the gas enters the vacuum pump 5 from the suction port 22 through the suction pipe 4. The vacuum pump 5, driven by the motor 20, forces the gas from the exhaust port 23 into the exhaust pipe 6. Part of the gas enters the oil-water separator 10 for purification through the filter pipe 9, and the rest enters the gas storage tank 7 for storage.

[0017] After filtration, the remaining solid material on the filter disc 13 is scraped off by the discharge scraper 12 and falls onto the conveyor belt 24 via the discharge chute 15 for transport to subsequent stages. Simultaneously, gas from the gas storage tank 7 is blown back into the filter 1 through the back-blowing pipe 8 to clean the filter disc 13 and ensure its filtration efficiency. The underflow pipe 14 at the bottom of the filter 1 discharges accumulated viscous liquid, the drain valve 21 on the left side of the vacuum pump 5 is used to drain internal liquid, and the support frame 18 provides stable support for components such as the gas-water separator 3, ensuring continuous and efficient operation of the entire equipment.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disc belt filter, comprising a filter (1), characterized in that: The filter (1) is equipped with steam-water separation pipes (2) on both the front and rear sides. The front ends of the two steam-water separation pipes (2) are threaded to the opposite side of the steam-water separator (3). The top of the steam-water separator (3) is threaded to the suction pipe (4). The rear end of the suction pipe (4) is threaded to the vacuum pump (5). The top left side of the vacuum pump (5) is threaded to two exhaust pipes (6). The front ends of the two exhaust pipes (6) are threaded to the gas storage tank (7). The top of the gas storage tank (7) is threaded to the back-blowing pipe (8). The outside of the back-blowing pipe (8) is fixedly connected to the front and rear sides of the filter (1).

2. The disc belt filter according to claim 1, characterized in that: Two exhaust pipes (6) are threaded to each other on one side, and two filter pipes (9) are threaded to each other on one side, and an oil-water separator (10) is threaded to each other on one side. A feed pipe (11) is threaded to the right side of the filter (1). Multiple discharge scrapers (12) are threaded to the right side inside the filter (1). A filter disc (13) is provided on the opposite side of the multiple discharge scrapers (12).

3. A disc-type belt filter press according to claim 1, characterized in that: The filter (1) has a threaded connection to the bottom right side of the bottom of the filter (1) and a feed chute (15) fixedly connected to the bottom left side of the filter (1). A conveyor belt (24) is provided at the bottom of the feed chute (15).

4. A disc-type belt filter press according to claim 1, characterized in that: The gas-water separator (3) has a drain tank (16) threadedly connected to both the front and rear sides of the bottom, and a drain outlet (17) threadedly connected to the bottom of the drain tank (16).

5. A disc-type belt filter press according to claim 1, characterized in that: The bottom outer side of the gas-water separator (3) is fixedly connected to a support frame (18), and the bottom of the support frame (18) is fixedly connected to a water tank (19).

6. A disc-type belt filter press according to claim 1, characterized in that: The vacuum pump (5) is connected to a motor (20) on the right side and to a drain valve (21) on the left side.

7. A disc-type belt filter press according to claim 1, characterized in that: The vacuum pump (5) has an air intake port (22) on the top right side, and the rear end of the air intake pipe (4) is threaded to the top of the air intake port (22).

8. A disc-type belt filter press according to claim 1, characterized in that: The vacuum pump (5) has an exhaust port (23) on the top left side, and the exhaust pipe (6) is threaded to the top of the exhaust port (23).

Images