Deionizer filter disc fixing structure

Abstract

The utility model provides a deionizer filter disc fixing structure which comprises a cylinder body, two end covers and a metal filter disc, the two end covers are arranged at the two ends of the cylinder body, and the inner walls of the end covers are provided with welding protruding structures used for hot melting. The welding convex structures comprise welding convex rings arranged on the edges of the inner walls of the end covers and welding convex strips annularly distributed in the centers of the inner walls of the end covers, and metal filter discs are fixedly arranged on the surfaces of the welding convex rings and the surfaces of the welding convex strips on the two end covers in a hot melting welding mode; the edge of the metal filter disc protrudes outwards to be provided with a positioning protruding strip, a layer of positioning ring is arranged on the welding protruding ring, the positioning ring is attached to the inner side wall of the end cover, an opening for the positioning protruding strip to penetrate through is formed in the positioning ring, a containing groove for containing the positioning protruding strip is formed in one side of the opening, and the positioning protruding strip is connected with the inner wall of the containing groove in a welding mode. Therefore, the limiting and fixing effect is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen fuel cell cooling systems, and particularly relates to a deionizer filter sheet fixing structure suitable for hot melt welding process. Background Technique

[0002] The deionizer in the hydrogen fuel cooling system mainly adsorbs the ion exchange in the coolant to prevent problems such as electrolytic reaction and corrosion. At present, in addition to the filter element in the deionizer, filter plates are provided at both ends. Chinese Patent Document: CN202222364437.6, discloses a deionizer with a fixed support. In this application, a first porous filter plate and a second porous filter plate are respectively arranged at both ends. The first porous filter plate is fixedly arranged on the support plate in the inner cavity of the cylinder body, and the second porous filter plate is fixedly arranged on the support structure on the inner wall of the end cover by means of adhesion. The support structure includes a positioning ring and a positioning block. The fixing methods of the filter plates at both ends in this application are different, mainly to avoid the failure of the adhesive connection due to the water flow impact on the filter plate. However, it is easy to make mistakes during assembly, and at the same time, this structure is also prone to the problem of adhesive connection failure during long-term operation, and this fixing structure is not applicable to the filter sheet fixing structure of the hot melt welding process. Summary of the Utility Model

[0003] The utility model aims at the above problems and discloses a deionizer filter sheet fixing structure, which solves the problems of relatively single installation structure of the filter plate in the existing deionizer and poor fixing effect.

[0004] The specific technical solutions are as follows:

[0005] A deionizer filter sheet fixing structure includes a cylinder body, end covers and metal filter sheets. The two end covers are fixedly arranged at both ends of the cylinder body. A welding projection structure for hot melt is provided on the inner wall of the end cover. The welding projection structure includes a welding convex ring arranged at the edge of the inner wall of the end cover and welding convex strips annularly distributed at the center of the inner wall of the end cover. The metal filter sheets are fixedly arranged on the surfaces of the welding convex rings and welding convex strips on the two end covers by means of hot melt welding, so that the metal filter sheets are welded and connected with the welding convex strips and welding convex rings; a positioning convex strip is protruded outward from the edge of the metal filter sheet. A positioning ring is provided on the welding convex ring. The positioning ring is attached to the inner side wall of the end cover, and an opening for the positioning convex strip to pass through is provided on the positioning ring. A receiving groove for receiving the positioning convex strip is provided on one side of the opening, so that the positioning convex strip is welded and connected with the inner wall of the receiving groove.

[0006] Further, the size of the receiving groove is adapted to the size of the positioning convex strip.

[0007] Further, the metal filter sheet is of a flat plate structure, and the positioning convex strips on the metal filter sheet are evenly distributed.

[0008] Furthermore, the end cap and the cylinder body are fixed by rotary welding.

[0009] Furthermore, a water outlet pipe and a water inlet pipe are respectively arranged on the two end caps.

[0010] Furthermore, a plurality of raised blocks are evenly distributed on the inner side wall of the welding convex ring.

[0011] The beneficial effects of the present utility model are embodied in:

[0012] Compared with the traditional method of using resin adhesive, the present utility model uses a metal filter sheet with high strength and flatness in combination with an end cap made of plastic material through hot melt welding, so that the molten material on the end cap is fixed to the metal filter sheet, and the fixing effect is better. At the same time, by using the positioning convex strip on the metal filter sheet to cooperate with the accommodating groove on the positioning ring, the limit fixing effect can be further improved. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the deionizer of the present utility model.

[0014] Figure 2 It is a schematic internal structure diagram of the end cap in the present utility model.

[0015] Figure 3 It is Figure 1 The sectional view taken along the line B-B in

[0016] Figure 4 It is a schematic structural diagram between the end cap and the metal filter sheet in the present utility model.

[0017] Figure 5 It is a schematic internal structure diagram of the end cap after disassembling the metal filter sheet in the present utility model.

[0018] Cylinder body 1, end cap 2, water inlet pipe 21, water outlet pipe 22, welding convex ring 23, raised block 231, welding convex strip 24, positioning ring 25, opening 251, accommodating groove 252, metal filter sheet 3, positioning convex strip 31. Detailed Embodiments

[0019] In order to make the technical solution of the present utility model clearer and more definite, the present utility model will be further described below with reference to the drawings. Any solution obtained by equivalent replacement of the technical features of the technical solution of the present utility model and conventional reasoning falls within the protection scope of the present utility model. The fixed connection and fixed setting mentioned in the present utility model are all common connection methods in the mechanical field, and welding, bolt and nut connection, and screw connection can all be used.

[0020] In the description of the creation of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the creation of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0021] As Figures 1-5 shown, this embodiment provides a fixing structure for a deionizer filter element, mainly aiming at the filter element fixing structure for the hot melt welding process, including a cylinder body 1, end covers 2 and a metal filter element 3. The two end covers 2 are fixedly arranged at both ends of the cylinder body 1. The cylinder body 1 and the end covers 2 are both made of plastic materials, and the end covers 2 and the cylinder body 1 are fixed by means of rotary welding. An outlet pipe 22 and an inlet pipe 21 are respectively arranged on the two end covers 2.

[0022] On the inner wall of the end cover 2, there is a welding projection structure for hot melting. The welding projection structure includes a welding convex ring 23 arranged at the edge of the inner wall of the end cover 2 and welding convex strips 24 annularly distributed at the center of the inner wall of the end cover 2. Among them, a plurality of raised blocks 231 are evenly distributed on the inner side wall of the welding convex ring 23. The surfaces of the welding convex rings 23 and the welding convex strips 24 on the two end covers 2 are fixedly provided with the metal filter element 3 by means of hot melt welding, so that the metal filter element 3 is welded and connected to the welding convex strips 24 and the welding convex rings 23; three positioning convex strips 31 are convexly arranged on the outer side of the edge of the metal filter element 3. A positioning ring 25 is arranged on the welding convex ring 23, and the positioning ring 25 is attached to the inner side wall of the end cover 2. Three openings 251 for the positioning convex strips 31 to pass through are opened on the positioning ring 25. Each opening 251 corresponds to a positioning convex strip 31. A receiving groove 252 for receiving the positioning convex strip 31 is opened on one side wall of the opening 251. The bottom of the receiving groove 252 is flush with the welding convex ring 23, and the size of the receiving groove 252 is adapted to the size of the positioning convex strip 31, so that when the positioning convex strip 31 and the inner wall of the receiving groove 252 are hot melted, they can be welded and connected.

[0023] In this embodiment, the metal filter element 3 is made of stainless steel and has a flat plate structure. A plurality of filter holes are evenly distributed on the metal filter element 3. There are three positioning convex strips 31 on the metal filter element 3 and they are evenly distributed.

[0024] Fixing method for the metal filter sheet 3 of the present utility model: During hot melting, place the metal filter sheet 3 in the end cap 2, align the positioning rib 31 with the opening 251 of the positioning ring 25 and embed it. Subsequently, rotate the metal sheet so that the positioning rib 31 is embedded into the receiving groove 252. Then, press the hot melt head down on the metal filter sheet 3. Since the deionizer end cap 2 is made of plastic material and melts when heated, the molten material on the end cap 2 combines with the metal filter sheet 3. After the hot melting is completed, the metal filter sheet 3 and the end cap 2 are fixed and sealed.

[0025] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A fixing structure for a deionizer filter element, comprising a cylinder body (1), end covers (2) and a metal filter element (3). The end covers (2) are fixedly arranged at both ends of the cylinder body (1). A welding projection structure is provided on the inner wall of the end cover (2). The welding projection structure includes a welding convex ring (23) arranged at the edge of the inner wall of the end cover (2) and welding convex strips (24) annularly distributed at the center of the inner wall of the end cover (2). It is characterized in that, The surfaces of the welding convex rings (23) and welding convex strips (24) on the two end covers (2) are fixedly provided with the metal filter element (3) by means of hot melt welding, so that the metal filter element (3) is welded and connected to the welding convex strips (24) and welding convex rings (23); a positioning convex strip (31) is provided with an outward convex edge on the metal filter element (3), a positioning ring (25) is provided on the welding convex ring (23), the positioning ring (25) is arranged in a fitting manner with the inner side wall of the end cover (2), and an opening (251) for the positioning convex strip (31) to pass through is provided on the positioning ring (25), and a receiving groove (252) for receiving the positioning convex strip (31) is provided on one side of the opening (251), so that the positioning convex strip (31) is welded and connected to the inner wall of the receiving groove (252).

2. A fixing structure for a deionizer filter, as described in claim 1, characterized in that, The size of the receiving groove (252) is adapted to the size of the positioning convex strip (31).

3. The fixing structure of a deionizer filter sheet according to claim 1, wherein, The metal filter element (3) is of a flat plate structure, and the positioning convex strips (31) on the metal filter element (3) are evenly distributed.

4. The fixing structure of a deionizer filter sheet as described in claim 1, wherein, The end cover (2) and the cylinder body (1) are fixed by means of rotary welding.

5. The fixed structure of the deionizer filter element according to claim 4, characterized in that, A water outlet pipe (22) and a water inlet pipe (21) are respectively provided on the two end covers (2).

6. The fixing structure of a deionizer filter element according to claim 1, wherein A plurality of raised blocks (231) are evenly distributed on the inner side wall of the welding convex ring (23).

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