Multi-stage valve filter

Abstract

The utility model discloses a multi-stage valve filter, belongs to the technical field of filters, and solves the problems that the number of filters needs to be reduced and the filtering requirement of the filters on fluid needs to be maintained because the sealing performance of the multi-stage valve filter cannot be compared with that of a seamless pipeline. Comprising an inlet pipe, an outlet pipe and a filter pipe, the inlet pipe and the outlet pipe are coaxially communicated, the filter pipe is communicated with the joint of the inlet pipe and the outlet pipe, a filter rod and a plurality of circles of coaxially arranged filter screen cylinders I are detachably connected in the filter pipe, the radiuses of the filter screen cylinders I are different, and the distances between the adjacent filter screen cylinders I are uniformly arranged at intervals. In the actual use process, fluid flows from the inlet pipe to the outlet pipe and is subjected to multi-stage filtration through the multiple circles of filter screen cylinders I and the multiple circles of filter screens II, the structural stability is guaranteed, the filter screen cylinders I and the filter screen cylinders II support each other, the filter rods adsorb solid particles, and multi-stage valve filtration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a multi-stage valve filter. Background Art

[0002] The Y-strainer is a commonly used liquid filtration device, and its name comes from its shape that resembles the letter "Y". The filter usually consists of an inlet pipe and an outlet pipe, as well as an inclined pipe. The inlet pipe is connected to the pipe system, while the two outlet pipes are connected to the receiving container or pipe system. The working principle of the Y-strainer is simple but effective. The liquid flows from the inlet pipe into the center of the filter and is then directed to the outlet pipe. As the liquid flows through the filter, solid particles, impurities or other unwanted substances in it are captured by the filter screen inside the filter. These captured solid particles will accumulate on the filter screen, and the clean liquid will flow out through the discharge pipe.

[0003] However, the filter mesh in the filter is cylindrical, which is actually a single-layer filter mesh. It is filtered once or at most twice. For some fluids that require filtering, a single filtration cannot achieve the final required cleanliness. In this case, several filters need to be connected to achieve the desired effect. However, too many filter connections will cause more gaps in the pipeline. Even if a good sealing effect can be guaranteed between the filter and the pipeline, it still cannot be compared with the sealing of a seamless pipeline. Therefore, it is necessary to reduce the number of filters and maintain the filtering requirements of the filter for the fluid.

[0004] Therefore, a multi-stage valve filter is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a multi-stage valve filter.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multi-stage valve filter comprises an inlet pipe and an outlet pipe which are coaxially connected, and a filter pipe which is connected to the connection between the inlet pipe and the outlet pipe. A filter rod and a plurality of coaxially arranged filter screen cylinders are detachably connected in the filter pipe. The radii of the plurality of filter screen cylinders are different, and the spacing between adjacent filter screen cylinders is evenly spaced.

[0008] Preferably, the filter tube is fixedly connected to a connecting flange at one end away from the inlet pipe, and also includes a receiving plate and a sealing plate. The receiving plate is provided with a plurality of coaxially arranged through grooves. One end of the filter mesh cylinder and the filter rod are fixedly connected to a connecting piece that passes through the through groove and is bent. The sealing plate and the connecting flange are clamped to the receiving plate and the connecting piece.

[0009] Preferably, a stud is fixedly connected to the connecting flange, and the receiving plate and the sealing plate are both provided with through holes for the stud to pass through, and the stud is threadedly connected with a nut that squeezes the sealing plate.

[0010] Preferably, it also includes a connecting pipe that is connected to the connection between the inlet pipe and the outlet pipe and is coaxially arranged with the filter pipe, and a plurality of circles of coaxially arranged filter screen cylinders 2 are arranged in the connecting pipe, the radii of the plurality of filter screen cylinders 2 are different, and the spacing between adjacent filter screen cylinders 2 is evenly spaced, and the filter screen cylinders 1 and 2 are staggered and distributed.

[0011] Preferably, the second filter screen cylinder is staggered with a portion of the filter screen cylinder, and the second filter screen cylinder is arranged in contact with the outer circle of the first filter screen cylinder.

[0012] Preferably, one end of the connecting pipe away from the inlet pipe is fixedly connected to a second connecting flange, the second connecting flange is detachably connected to a sealing cover, and one end of a plurality of the second filter screen cartridges is fixedly connected to the sealing cover.

[0013] Preferably, the hardness of the second filter mesh cylinder is greater than the hardness of the first filter mesh cylinder.

[0014] Preferably, the filter screen cylinder 2 is made of 17-4PH martensitic stainless steel, the filter screen cylinder 1 is made of 304 stainless steel, and the filter rod is made of a carbon rod filter element.

[0015] The utility model has the following beneficial effects:

[0016] In actual application, the utility model, the fluid flows from the inlet pipe to the outlet pipe, and is filtered layer by layer through multiple circles of filter mesh cylinders one and two to ensure the stability of the structural strength. The filter mesh cylinder one and the filter mesh cylinder two support each other and share the force together. Under the impact of high-flow fluid, they support each other and remain stable. In addition, a filter rod is provided to absorb solid particles in the fluid to achieve the effect of multi-stage valve filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 A cross-sectional view that is new to this utility model;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0021] 1. Inlet pipe; 2. Outlet pipe; 3. Filter tube; 4. Stud; 5. Nut; 6. Sealing plate; 7. Connecting pipe; 8. Sealing cover; 9. Adapter plate; 10. Groove; 11. Filter rod; 12. Filter screen cartridge 1; 13. Connecting piece; 14. Filter screen cartridge 2. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] A multi-stage valve filter, such as Figure 1 and 2 As shown, it includes an inlet pipe 1 and an outlet pipe 2 that are coaxially connected, a filter tube 3 connected to the connection between the inlet pipe 1 and the outlet pipe 2, and a connecting pipe 7 connected to the connection between the inlet pipe 1 and the outlet pipe 2 and coaxially arranged with the filter tube 3. The end of the filter tube 3 away from the inlet pipe 1 is fixedly connected to a circle of connecting flange 1, and a filter rod 11 and a plurality of circles of coaxially arranged filter screen cylinders 12 are detachably connected in the filter tube 3. The radii of the plurality of filter screen cylinders 12 are different, and the spacing between adjacent filter screen cylinders 12 is evenly spaced.

[0024] like Figure 3 As shown, the specific detachable connection method of the filter screen cartridge 12 and the filter rod 11 is through the receiving plate 9 and the sealing plate 6 also included in the filter, the receiving plate 9 is provided with a plurality of coaxially arranged through grooves 10, the cross-section of the through grooves 10 is bow-shaped, and it is in a bad arc shape, the filter screen cartridge 12 and one end of the filter rod 11 are fixedly connected with a connecting piece 13 that passes through the through grooves 10 and is bent, the sealing plate 6 and the connecting flange are clamped to the receiving plate 9 and the connecting piece 13, the connecting flange is fixedly connected with a stud 4, the receiving plate 9 and the sealing plate 6 are provided with through holes for the stud 4 to pass through, and the stud 4 is threadedly connected with a nut 5 that squeezes the sealing plate 6.

[0025] like Figure 4As shown, a plurality of coaxially arranged filter screen cylinders 14 are arranged in the connecting pipe 7, the radii of the plurality of filter screen cylinders 14 are different, and the spacing between adjacent filter screen cylinders 14 is evenly spaced, and the filter screen cylinders 12 and 14 are staggered and distributed, and the end of the connecting pipe 7 away from the inlet pipe 1 is fixedly connected with a connecting flange 2, and the connecting flange 2 is detachably connected with a sealing cover 8, and one end of the plurality of filter screen cylinders 14 is fixedly connected to the sealing cover 8, the filter screen cylinder 14 and the filter screen cylinder 1 12 are partially staggered, and the filter screen cylinder 2 14 is arranged to fit the outer ring of the filter screen cylinder 1 12, the hardness of the filter screen cylinder 2 14 is greater than the hardness of the filter screen cylinder 1 12, the filter screen cylinder 2 14 is made of 17-4PH martensitic stainless steel, the filter screen cylinder 12 is made of 304 stainless steel, the filter rod 11 is made of a carbon rod filter element, and the connecting piece 13 is also made of 304 stainless steel.

[0026] During the actual use of the utility model, the fluid flows through the inlet pipe 1 toward the outlet pipe 2. During the flow process, the fluid will pass through several circles of filter mesh cylinder 12 and filter mesh cylinder 2 14 for filtration, so that the fluid is filtered for multiple times. In order to ensure the stability of its structural strength, filter mesh cylinder 2 14 and filter mesh cylinder 1 12 both support each other and share the force, so that when subjected to the impact of a large flow of fluid, they can support each other through the same circle of filter mesh cylinder 1 12 and filter mesh cylinder 2 14. At the same time, a filter rod 11 is also provided, and the filter rod 11 can adsorb solid particles in the fluid, so that a single filter can achieve the effect of multi-stage valve filtration.

[0027] When the filtering effect of the filter becomes worse, when replacing the filter screen cartridge 14, it is only necessary to remove the cover 8 from the connecting flange 2 to take the filter screen cartridge 14 out of the connecting pipe 7. A through hole is provided on the cover 8, and a screw passing through the through hole is fixedly connected to the connecting flange 2. A screw block with an internal thread is threadedly connected to the screw, and the screw block presses the cover 8 tightly. The filter screen cartridge 14 can be replaced by only unscrewing the screw from the screw block.

[0028] When replacing the filter screen cartridge 12, loosen the nut 5 and the stud 4 to remove the sealing plate 6, and also remove the receiving plate 9, and remove the filter rod 11 and a number of filter screen cartridges 12 from the filter tube 3 through the receiving plate 9 and the connecting piece 13, and then straighten the connecting piece 13 on the filter screen cartridge 12 to be replaced, so that the projection surface of the connecting piece 13 is covered by the projection surface of the groove 10, and then the two are separated. Similarly, only a new filter screen cartridge 12 or filter rod 11 needs to be replaced, and the above operation can be performed in reverse to complete the replacement.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage valve filter, comprising an inlet pipe (1) and an outlet pipe (2) connected coaxially, and a filter pipe (3) connected to the connection between the inlet pipe (1) and the outlet pipe (2), characterized in that: A filter rod (11) and a plurality of coaxially arranged filter screen cylinders (12) are detachably connected in the filter tube (3); the radii of the plurality of filter screen cylinders (12) are different, and the spacing between adjacent filter screen cylinders (12) is evenly spaced.

2. A multi-stage valve filter according to claim 1, characterized in that: The filter tube (3) is fixedly connected to a connecting flange at one end away from the inlet tube (1), and further comprises a receiving plate (9) and a sealing plate (6). The receiving plate (9) is provided with a plurality of coaxially arranged through grooves (10). One end of the filter screen cylinder (12) and the filter rod (11) are fixedly connected to a connecting piece (13) which passes through the through groove (10) and is bent. The sealing plate (6) and the connecting flange are arranged to clamp the receiving plate (9) and the connecting piece (13).

3. A multi-stage valve filter according to claim 2, characterized in that: A stud (4) is fixedly connected to the connecting flange, and holes for the stud (4) to pass through are provided on the receiving plate (9) and the sealing plate (6). The stud (4) is threadedly connected to a nut (5) for squeezing the sealing plate (6).

4. A multi-stage valve filter according to claim 1, characterized in that: The invention also comprises a connecting pipe (7) which is connected to the connection point between the inlet pipe (1) and the outlet pipe (2) and is coaxially arranged with the filter pipe (3). The connecting pipe (7) is provided with a plurality of coaxially arranged filter screen cylinders (14) in the connecting pipe. The radii of the plurality of filter screen cylinders (14) are different, and the spacing between adjacent filter screen cylinders (14) is evenly spaced. The filter screen cylinders (12) and the filter screen cylinders (14) are staggered and distributed.

5. A multi-stage valve filter according to claim 4, characterized in that: The second filter screen cartridge (14) is partially staggered with the first filter screen cartridge (12), and the second filter screen cartridge (14) is arranged to fit the outer ring of the first filter screen cartridge (12).

6. A multi-stage valve filter according to claim 5, characterized in that: One end of the connecting pipe (7) away from the inlet pipe (1) is fixedly connected to a second connecting flange, and the second connecting flange is detachably connected to a sealing cover (8), and one end of a plurality of second filter screen cylinders (14) is fixedly connected to the sealing cover (8).

7. A multi-stage valve filter according to claim 4, characterized in that: The hardness of the second filter screen cartridge (14) is greater than the hardness of the first filter screen cartridge (12).

8. A multi-stage valve filter according to claim 7, characterized in that: The second filter screen cylinder (14) is made of 17-4PH martensitic stainless steel, the first filter screen cylinder (12) is made of 304 stainless steel, and the filter rod (11) is made of a carbon rod filter element.

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