A particulate filter structure

Abstract

The utility model relates to a kind of granule filter structure, including cylinder, upper cover and filter screen assembly, cylinder one end is equipped with outlet pipe, and the other end of cylinder is open and installs upper cover, and upper cover is equipped with inlet pipe;The filter screen assembly is set to the end of the nozzle of the inner wall of cylinder close to outlet pipe, and filter screen assembly is integrally injection molded with cylinder, and filter screen assembly includes filter screen and filter screen support, filter screen is the tubular structure of one end opening, and filter screen side wall is conical surface structure, so that the end of filter screen close to outlet pipe is set to flared;Filter screen support size shape is compatible with filter screen size shape, and filter screen support includes the inner support and outer support of equal shape, and the one end of inner support and outer support is integrally connected with the inner wall of cylinder, and filter screen is clamped and fixed between inner support and outer support, filter screen adopts the tubular structure with taper, increase filtration area, reduce flow resistance, improve filtration capacity, and the tubular filter screen with taper is convenient for injection molding process demoulding, and production process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fuel cell cooling technology, and in particular to a particulate filter structure used in the thermal management cooling circuit of a hydrogen fuel cell. Background Technology

[0002] During the operation of a hydrogen fuel cell stack, impurities and particles are generated in the related pipes and components of the system. These particles may clog the coolant flow channels inside the stack and even affect the reliability of some precision parts, leading to component failure. Therefore, it is necessary to filter the coolant. Existing patent document CN202121223770.4 discloses a low flow resistance deionizer. In this application, the filter screen is sleeved onto the outside of the filter screen frame and positioned by a limiting seat at one end. This positioning method has poor stability and is prone to movement or even detachment under liquid impact. Furthermore, the filter screen adopts a cylindrical structure, and to increase the filter screen surface area, several folded protrusions are used to form a ring structure on the filter screen surface. This structure is relatively complex to manufacture. Therefore, it is necessary for those skilled in the art to improve upon the existing technology to address these problems. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a particulate filter structure, which solves the problem of the relatively complex manufacturing process of filter assemblies in the prior art.

[0004] The specific technical solution is as follows:

[0005] A particulate filter structure includes a cylinder, a top cover, and a filter assembly. One end of the cylinder has an outlet pipe, and the other end of the cylinder is open and has the top cover installed thereon. An inlet pipe is located on the top cover. The filter assembly is located on the inner wall of the cylinder near the outlet pipe. The filter assembly is integrally injection molded with the cylinder. The filter assembly includes a filter screen and a filter support. The filter screen has a cylindrical structure with one open end, and its sidewall is conical, causing the end of the filter screen near the outlet pipe to be flared. The size and shape of the filter support are adapted to the size and shape of the filter screen. The filter support includes an inner support member and an outer support member of equal shape. One end of both the inner and outer support members is integrally connected to the inner wall of the cylinder, and the filter screen is clamped and fixed between the inner and outer support members.

[0006] Preferably, the diameter of one end opening of the filter support is adapted to the inner diameter of the water outlet pipe.

[0007] Preferably, a fixed bracket is provided on the outer wall of the cylinder.

[0008] Preferably, the top cover and the cylinder are connected and fixed by hot-melt welding.

[0009] Preferably, the inlet pipe and the outlet pipe are arranged symmetrically.

[0010] The beneficial effects of this utility model are reflected in:

[0011] (1) In this utility model, the filter assembly and the cylinder are integrally injection molded. The filter adopts a tapered cylindrical structure, which increases the filtration area, reduces flow resistance, and improves filtration capacity. The tapered cylindrical filter facilitates demolding during injection molding, simplifying the manufacturing process.

[0012] (2) The filter screen is sandwiched between two plastic support parts during injection molding to ensure that the filter screen will not fall off during use, making the filter screen assembly structure more stable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a side view of the present invention.

[0015] Figure 3 This is a schematic diagram of the internal structure of the middle cylinder of this utility model.

[0016] Figure 4 for Figure 2 Sectional view along the AA direction.

[0017] Figure 5 This is a side sectional view of the middle cylinder of this utility model.

[0018] Figure 6 This is a side sectional view of the upper cover in this utility model.

[0019] Figure 7 This is a schematic diagram of the filter structure in this utility model.

[0020] Explanation of reference numerals in the attached drawings: cylinder 1, water outlet pipe 101, fixed bracket 102, top cover 2, water inlet pipe 201, filter screen bracket 3, inner support 31, outer support 32, filter screen 4. Detailed Implementation

[0021] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Please see the appendix Figure 1-7 This embodiment provides a particle filter structure, including a cylinder 1, a top cover 2, and a filter screen 4 assembly. One end of the cylinder 1 is provided with a water outlet pipe 101, and the other end of the cylinder 1 is open and the top cover 2 is installed. The top cover 2 is provided with a water inlet pipe 201, and the water inlet pipe 201 and the water outlet pipe 101 are symmetrically arranged. A filter screen 4 assembly is installed on the inner wall of the cylinder 1 near the outlet pipe 101. The filter screen 4 assembly is integrally injection molded with the cylinder 1. The filter screen 4 assembly includes a filter screen 4 and a filter screen 4 support 3. The filter screen 4 has a cylindrical structure with one open end and a conical side wall, which makes the end of the filter screen near the outlet pipe 101 flared, which facilitates increasing the area, reducing flow resistance, increasing the filtration area, and improving the filtration capacity. The size and shape of the filter screen 4 support 3 are adapted to the size and shape of the filter screen 4. The filter screen 4 support 3 includes an inner support member 31 and an outer support member 32 of the same shape. One end of the inner support member 31 and the outer support member 32 are integrally connected to the inner wall of the cylinder 1. The tapered cylindrical structure facilitates demolding during the injection molding process. The filter screen 4 is clamped and fixed between the inner support member 31 and the outer support member 32 to ensure that the filter screen 4 will not fall off during use, making the filter screen 4 assembly structure more stable.

[0024] In this embodiment, the diameter of one end opening of the filter screen 4 support 3 is adapted to the inner diameter of the water outlet pipe 101 to reduce flow resistance.

[0025] In this embodiment, the top cover 2 and the cylinder 1 are injection molded separately and then welded together by a hot melt welding process. A fixing bracket 102 is provided on the outer wall of the cylinder 1 to facilitate product fixation.

[0026] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A particulate filter structure, comprising a cylindrical body (1), a top cover (2), and a filter screen (4) assembly, wherein one end of the cylindrical body (1) is provided with a water outlet pipe (101), and the other end of the cylindrical body (1) is open and the top cover (2) is installed thereon, and the top cover (2) is provided with a water inlet pipe (201); the filter screen (4) assembly is provided on the inner wall of the cylindrical body (1) near the opening of the water outlet pipe (101), characterized in that, The filter screen (4) assembly is integrally injection molded with the cylinder (1). The filter screen (4) assembly includes the filter screen (4) and the filter screen (4) support (3). The filter screen (4) has a cylindrical structure with one end open, and the side wall of the filter screen (4) has a conical structure, so that the end of the filter screen (4) near the water outlet pipe (101) is flared. The size and shape of the filter screen (4) support (3) are adapted to the size and shape of the filter screen (4). The filter screen (4) support (3) includes an inner support member (31) and an outer support member (32) of equal shape. One end of the inner support member (31) and the outer support member (32) are integrally connected to the inner wall of the cylinder (1). The filter screen (4) is clamped and fixed between the inner support member (31) and the outer support member (32).

2. The particulate filter structure as described in claim 1, characterized in that, The diameter of one end opening of the filter screen (4) support (3) is adapted to the inner diameter of the water outlet pipe (101).

3. The particulate filter structure as described in claim 1, characterized in that, A fixed bracket (102) is provided on the outer wall of the cylinder (1).

4. The particulate filter structure as described in claim 1, characterized in that, The upper cover (2) and the cylinder (1) are connected and fixed by hot melt welding.

5. The particulate filter structure as described in claim 1, characterized in that, The inlet pipe (201) and the outlet pipe (101) are arranged symmetrically.

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