Squeezing pipeline water pressure adjusting device for diaphragm filter press

Abstract

The utility model provides a squeezing pipeline water pressure adjusting device for a diaphragm filter press, which comprises a squeezing water tank (1), a filter (2), a squeezing water pump (3) and the diaphragm filter press (5), and is characterized in that the filter (2) and the squeezing water pump (3) are sequentially arranged on a first water outlet pipeline of the squeezing water tank (1), a water outlet of the filter (2) is connected with a water inlet of the squeezing water pump (3), and a water outlet of the filter (2) is connected with a water outlet of the diaphragm filter press (5). A water outlet of the squeezing water pump (3) is connected with a squeezing header pipe (51) of the diaphragm filter press (5), and a first flange type pneumatic ball valve (41) and a safety valve (42) are arranged on a pipeline between the squeezing water pump (3) and the diaphragm filter press (5). According to the utility model, a plurality of flange type pneumatic ball valves and safety valves (42) are additionally arranged on the squeezing water pipeline, so that a dual-protection effect can be achieved, the normal work of equipment and the squeezing pipeline is further protected, accidents are prevented, and the loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm filter presses, in particular to a water pressure regulating device for a pressing pipeline of a diaphragm filter press. Background Art

[0002] The diaphragm filter press has the advantages of high pressing pressure, good corrosion resistance, easy maintenance, safety and reliability, etc. It is widely used in many production industries such as metallurgy, pharmaceuticals, food, environmental protection, fine chemicals, etc. The main difference between the diaphragm filter press and the ordinary chamber filter press is that two elastic diaphragms are installed on both sides of the filter plate. The working principle of the diaphragm filter press is: during operation, after the feeding is completed, the high-pressure fluid medium (specifically compressed air or water) can be injected into the diaphragm filter plate, and then the whole diaphragm bulges to compress the filter cake, thereby achieving further dehydration of the filter cake and further reducing the moisture content of the filter cake, that is, completing the diaphragm squeezing filtration.

[0003] However, in the actual pressing process, since the pressing pressure can reach 0.8MPa~3MPa, if there is no operation or improper operation, the pressure in the equipment and the pressing pipeline will exceed the equipment setting value, causing the filter plate to rupture and damage, and even posing a threat to personal safety. Utility Model Content

[0004] In view of the above problems, the utility model provides a water pressure regulating device for a pressing pipeline of a diaphragm filter press, which can automatically regulate the pressure in the device and the pressing pipeline.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a water pressure regulating device for a pressing pipeline of a diaphragm filter press, comprising: a pressing water tank, a filter, a pressing water pump and a diaphragm filter press, the filter and the pressing water pump are sequentially arranged on a first water outlet pipeline of the pressing water tank, the water outlet of the filter is connected to a water inlet of the pressing water pump, the water outlet of the pressing water pump is connected to a pressing main pipe of the diaphragm filter press, and a first flange-type pneumatic ball valve and a safety valve are arranged on the pipeline between the pressing water pump and the diaphragm filter press.

[0006] The beneficial effects of the present invention are:

[0007] 1. Installing multiple flange-type pneumatic ball valves and safety valves on the squeeze water pipeline can play a dual protection role. That is, when the pneumatic ball valve fails, when the pressure in the equipment and the squeeze pipeline exceeds the set pressure of the safety valve, the safety valve will automatically open to release the pressure, thereby ensuring that the medium pressure in the equipment and the squeeze pipeline is below the set pressure, effectively protecting the diaphragm filter plate of the diaphragm filter press from damage.

[0008] 2. The device provided by the utility model has a simple structure, is easy to use and maintain, and is safe and reliable; the entire working action is rapid and flexible, which not only improves production efficiency but also has good working stability.

[0009] 3. The device provided by the utility model effectively improves the production and processing capacity of the diaphragm filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above contents and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0011] Figure 1 It is a schematic diagram of a water pressure regulating device for a pressing pipeline of a diaphragm filter press provided in an embodiment of the utility model.

[0012] In the above drawings, the corresponding reference numerals are described as follows:

[0013] 1: water pressing tank, 2: filter, 3: water pressing pump, 41: first flange type pneumatic ball valve, 42: safety valve, 43: second flange type pneumatic ball valve, 44: third flange type pneumatic ball valve, 5: diaphragm filter press, 51: pressing main pipe, 61: first flange type manual ball valve, 62: second flange type manual ball valve, 63: flange type check valve, 64: third flange type manual ball valve, 65: fourth flange type manual ball valve. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0015] In view of the fact that in the related art, if the pressure in the equipment and the pressing pipeline exceeds the set value of the equipment, it will cause the filter plate to rupture and damage, and even pose a threat to personal safety, the utility model proposes a pressing pipeline water pressure regulating device for a diaphragm filter press to ensure that the medium pressure in the equipment and the pressing pipeline is below the set pressure, thereby protecting the normal operation of the equipment and the pressing pipeline, preventing accidents and reducing losses.

[0016] Figure 1 It is a schematic diagram of a water pressure regulating device for a pressing pipeline of a diaphragm filter press provided in an embodiment of the utility model.

[0017] Combination Figure 1The utility model discloses a water pressure regulating device for a squeezing pipeline of a diaphragm filter press, comprising a squeezing water tank 1, a filter 2, a squeezing water pump 3 and a diaphragm filter press 5. The filter 2 and the squeezing water pump 3 are sequentially arranged on the first water outlet pipeline of the squeezing water tank 1, the water outlet of the filter 2 is connected to the water inlet of the squeezing water pump 3, the water outlet of the squeezing water pump 3 is connected to the squeezing main pipe 51 of the diaphragm filter press 5, and a first flange-type pneumatic ball valve 41 and a safety valve 42 are arranged on the pipeline between the squeezing water pump 3 and the diaphragm filter press 5.

[0018] The utility model can play a dual protection role by adding multiple flange-type pneumatic ball valves and safety valves to the squeeze water pipeline. That is, when the pneumatic ball valve fails, when the pressure in the equipment and the squeeze pipeline exceeds the set pressure of the safety valve, the safety valve is automatically opened to release the pressure, thereby ensuring that the medium pressure in the equipment and the squeeze pipeline is below the set pressure, thereby protecting the normal operation of the equipment and the squeeze pipeline, preventing accidents and reducing losses.

[0019] Furthermore, the water inlet of the squeeze water tank 1 is connected to the clean water network, and a first flange-type manual ball valve 61 is arranged on the pipeline between the clean water network and the water inlet of the squeeze water tank 1. When the liquid level in the squeeze water tank 1 is low, the first flange-type manual ball valve 61 is opened to replenish water to the squeeze water tank 1. When the squeeze water level in the squeeze water tank 1 reaches the set level, the first flange-type manual ball valve 61 is closed.

[0020] Furthermore, a second flange-type manual ball valve 62 is provided on the pipeline between the first water outlet of the squeeze water tank 1 and the filter 2. Before starting the squeeze water pump 3, the second flange-type manual ball valve 62 is opened first to ensure that the pump cavity of the squeeze water pump 3 is filled with liquid. This valve needs to be closed when the squeeze water pump 3 is stopped or overhauled.

[0021] Furthermore, a flanged check valve 63 and a third flanged manual ball valve 64 are sequentially arranged on the outlet pipe of the squeeze water pump 3; the flanged check valve 63 is used to prevent the liquid in the pipeline from flowing back when the squeeze water pump 3 stops pumping, so as to prevent damage to the impeller and pump chamber of the squeeze water pump 3; the third flanged manual ball valve 64 is always in an open state during the production process. When the flanged check valve 63 fails and needs to be repaired and replaced, the third flanged manual ball valve 64 is closed to prevent the liquid in the pipeline from flowing out.

[0022] Specifically, one end of the third flange manual ball valve 64 away from the flange check valve 63 is connected to the pipeline between the second end of the first flange pneumatic ball valve 41 and the diaphragm filter press 5; and one end of the third flange manual ball valve 64 away from the flange check valve 63 is connected to the pipeline between the second end of the safety valve 42 and the diaphragm filter press 5.

[0023] Furthermore, the second water outlet of the squeeze water tank 1 is connected to the first end of the first flange-type pneumatic ball valve 41, and the second end of the first flange-type pneumatic ball valve 41 is connected to the squeeze main pipe 51 of the diaphragm filter press 5; and the second water outlet of the squeeze water tank 1 is connected to the first end of the safety valve 42, and the second end of the safety valve 42 is connected to the squeeze main pipe 51 of the diaphragm filter press 5.

[0024] Furthermore, the first flange-type pneumatic ball valve 41 and the safety valve 42 are connected in parallel on the pipeline between the water squeezing pump 3 and the diaphragm filter press 5. The first flange-type pneumatic ball valve 41 serves as an electrical safety interlock protection when the water squeezing pump 3 is under pressure, and the safety valve 42 serves as a physical safety protection when the water squeezing pump 3 is under pressure. The two work together to achieve control of the pressure in all equipment and the total squeezing pipeline.

[0025] When the first flange-type pneumatic ball valve 41 is operating normally, the pressure value in the squeezing pipeline is adjusted to meet the normal operation of the equipment, and the safety valve 42 is also in normal operation; once the first flange-type pneumatic ball valve 41 fails, the pressure in the equipment and the squeezing pipeline will exceed the set pressure of the safety valve 42, which will cause the safety valve 42 in the squeezing pipeline to automatically open for pressure relief.

[0026] The second water outlet of the squeeze water tank 1 serves as a reflux port. The liquid that flows out after the safety valve 42 is opened for pressure relief will flow back to the squeeze water tank 1 along the second water outlet, thereby reducing the pressure in the equipment and the squeeze pipeline, and further protecting the normal operation of the equipment and the squeeze pipeline.

[0027] Furthermore, a second flange-type pneumatic ball valve 43 and a third flange-type pneumatic ball valve 44 are also arranged on the pipeline between the second end of the first flange-type pneumatic ball valve 41 and the diaphragm filter press 5; and a second flange-type pneumatic ball valve 43 and a third flange-type pneumatic ball valve 44 are also arranged in sequence on the pipeline between the second end of the safety valve 42 and the diaphragm filter press 5.

[0028] In addition, a second filter press and a third filter press are connected to the pipeline between the second flange-type pneumatic ball valve 43 and the third flange-type pneumatic ball valve 44. The second flange-type pneumatic ball valve 43 is used to control the feed and feed amount of the three filter presses, and the third flange-type pneumatic ball valve 44 is used to control the feed and feed amount of a single filter press, thereby achieving that one water pressing pump 3 can provide water for three filter presses.

[0029] Furthermore, the filter 2 is a Y-type filter, which can filter rust, sand and a small amount of solid particles in the water to prevent the water inlet hole of the filter plate from being blocked, thereby stabilizing the process and ensuring safe production. It is extremely convenient to use and maintain.

[0030] Furthermore, the water inlet, the first water outlet, the second water outlet and the third water outlet of the squeeze water tank 1 are all provided with flange short sections, so as to facilitate the connection with the flange valves and the pipeline; a fourth flange-type manual ball valve 65 is provided on the third water outlet pipeline of the squeeze water tank 1, and the third water outlet serves as the drain port of the squeeze water tank 1. By adjusting the fourth flange-type manual ball valve 65, the squeeze water tank 1 can be cleaned regularly and the water containing excess impurities can be drained.

[0031] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water pressure regulating device for a pressing pipeline of a membrane filter press, comprising: A squeeze water tank (1), a filter (2), a squeeze water pump (3) and a diaphragm filter press (5), characterized in that the filter (2) and the squeeze water pump (3) are arranged in sequence on the first water outlet pipeline of the squeeze water tank (1), the water outlet of the filter (2) is connected to the water inlet of the squeeze water pump (3), the water outlet of the squeeze water pump (3) is connected to the squeeze main pipe (51) of the diaphragm filter press (5), and a first flange-type pneumatic ball valve (41) and a safety valve (42) are arranged on the pipeline between the squeeze water pump (3) and the diaphragm filter press (5).

2. The device according to claim 1, characterized in that The first flange-type pneumatic ball valve (41) and the safety valve (42) are connected in parallel on the pipeline between the water pressing pump (3) and the membrane filter press (5).

3. The device according to claim 1, characterized in that The first end of the first flange-type pneumatic ball valve (41) is connected to the second water outlet of the squeeze water box (1), and the second end of the first flange-type pneumatic ball valve (41) is connected to the squeeze main pipe (51) of the diaphragm filter press (5).

4. The device according to claim 1, characterized in that The first end of the safety valve (42) is connected to the second water outlet of the squeeze water box (1), and the second end of the safety valve (42) is connected to the squeeze main pipe (51) of the membrane filter press (5).

5. The device according to claim 1, characterized in that The water inlet of the squeeze water tank (1) is connected to a clean water pipe network, and a first flange-type manual ball valve (61) is provided on the pipeline between the clean water pipe network and the water inlet of the squeeze water tank (1).

6. The device according to claim 1, characterized in that A second flange-type manual ball valve (62) is provided on the pipeline between the first water outlet of the squeeze water box (1) and the filter (2).

7. The device according to claim 1, characterized in that A flange check valve (63) and a third flange manual ball valve (64) are sequentially arranged on the outlet pipeline of the water squeezing pump (3); an end of the third flange manual ball valve (64) away from the flange check valve (63) is connected to the pipeline between the second end of the first flange pneumatic ball valve (41) and the diaphragm filter press (5); And one end of the third flange-type manual ball valve (64) away from the flange-type check valve (63) is connected to the pipeline between the second end of the safety valve (42) and the diaphragm filter press (5).

8. The device according to claim 1, characterized in that A second flange-type pneumatic ball valve (43) and a third flange-type pneumatic ball valve (44) are also provided on the pipeline between the second end of the first flange-type pneumatic ball valve (41) and the membrane filter press (5); A second flange-type pneumatic ball valve (43) and a third flange-type pneumatic ball valve (44) are sequentially arranged on the pipeline between the second end of the safety valve (42) and the membrane filter press (5); A second filter press and a third filter press are also connected to the pipeline between the second flange type pneumatic ball valve (43) and the third flange type pneumatic ball valve (44).

9. The device according to claim 1, characterized in that The filter (2) is a Y-type filter.

10. The device according to claim 1, characterized in that The water inlet, the first water outlet, the second water outlet and the third water outlet of the squeeze water box (1) are all provided with flange nipples, and the third water outlet pipeline of the squeeze water box (1) is provided with a fourth flange-type manual ball valve (65).

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