Novel corrosion-resistant power supply filter

Abstract

The utility model discloses a novel corrosion-resistant power supply filter, which relates to the technical field of filters, and is characterized in that the novel corrosion-resistant power supply filter comprises a filter shell, a cover plate is arranged on one side of the filter shell, a rigid sealing element is arranged between the cover plate and the filter shell, and a plurality of threaded holes are formed in the rigid sealing element. A threaded hole is formed in the filter shell, a through hole corresponding to the threaded hole is formed in the cover plate, a fixing bolt corresponding to the threaded hole is arranged on the filter shell, the rigid sealing piece is provided with a first sealing part and a second sealing part, the first sealing part corresponds to the joint of the cover plate and the filter shell, and the threaded hole is formed between the first sealing part and the second sealing part. According to the power supply filter, the cover plate is fixed on the filter shell through the bolt, and the bolt is tightened, so that the first sealing part on the rigid sealing ring is matched with the flexible sealing piece to seal the joint of the filter shell and the cover plate, rainwater is prevented from entering the power supply filter, and the anti-corrosion effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and more specifically, it relates to a new type of corrosion-resistant power filter. Background Technique

[0002] A power filter is an electronic device used to filter noise and interference in the power supply. It mainly consists of components such as inductors and capacitors, and can effectively suppress high-frequency noise, electromagnetic interference, and pulse interference in the power supply.

[0003] In electronic devices used outdoors, a power filter is installed. When it rains, the power filter may fail immediately. Rainwater may dissolve gases such as carbon dioxide, sulfur dioxide, and nitrogen oxides in the air to form acidic substances. When these acidic substances come into contact with the metal components inside the power filter, chemical reactions will occur, causing corrosion to the metal components.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a new type of corrosion-resistant power filter. While fixing the cover plate to the filter housing through bolts, the bolts are tightened, so that the first sealing part on the rigid seal cooperates with the flexible seal to seal the connection between the filter housing and the cover plate.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A new type of corrosion-resistant power filter, including a filter housing, a cover plate is arranged on one side of the filter housing, a rigid seal is arranged between the cover plate and the filter housing, a plurality of threaded holes are opened on the rigid seal, through holes corresponding to the threaded holes are opened on the cover plate, fixing bolts corresponding to the threaded holes are arranged on the filter housing, the rigid seal is provided with a first sealing part and a second sealing part, the first sealing part is correspondingly arranged at the joint where the cover plate and the filter housing are attached, and the threaded holes are established between the first sealing part and the second sealing part.

[0007] Preferably, L-shaped positioning plates that are symmetrical to each other are arranged on the opposite two side walls of the filter housing, and mounting holes corresponding to the bolts are opened on the L-shaped positioning plates.

[0008] Preferably, the cross-section of the rigid seal is in the shape of an A, the first sealing part and the second sealing part are arranged at both ends of the bottom of the rigid seal, the cross-sections of the first sealing part and the second sealing part are both circular, and the threaded holes of the rigid seal are opened between the first sealing part and the second sealing part.

[0009] Preferably, a baffle is provided on the cover plate, and a positioning groove corresponding to the baffle is provided on the filter housing.

[0010] Preferably, an installation groove corresponding to the rigid seal is provided at the end of the filter housing corresponding to the cover plate, and flexible seals corresponding to the rigid seal are provided on both the side wall of the installation groove and the cover plate.

[0011] The present utility model has the following beneficial effects:

[0012] When the cover plate is fixed to the filter housing by bolts, the bolts are tightened, so that the first sealing portion on the rigid seal cooperates with the flexible seal to seal the connection between the filter housing and the cover plate. Since the cross section of the rigid seal is in an A shape, the first sealing portion and the second sealing portion are respectively provided on both sides of the bottom end of the rigid seal, so that a sealing cavity is formed between the first sealing portion and the second sealing portion. The sealing cavity seals the installation portion of the bolt, thereby enhancing the sealing performance of the power filter and preventing rainwater from entering and causing corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is an exploded view of the present utility model;

[0015] Figure 3 is a cross-sectional view of the present utility model;

[0016] Figure 4 is Figure 3 a partial enlarged view of A in

[0017] Figure 5 is a schematic structural view of the rigid seal of the present utility model.

[0018] In the figure: 1, filter housing; 2, cover plate; 3, rigid seal; 4, threaded hole; 5, through hole; 6, bolt; 7, first sealing portion; 8, second sealing portion; 9, L-shaped positioning plate; 10, baffle; 11, positioning groove; 12, installation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] A new type of corrosion-resistant power filter, as Figures 1 to 5 shown, includes a filter housing 1, a cover plate 2 is provided on one side of the filter housing 1, and a rigid seal 3 is provided between the cover plate 2 and the filter housing 1.

[0021] On the opposite side walls of the filter housing 1, there are integrally formed symmetric L-shaped positioning plates 9. On the outer peripheral wall of the filter housing 1, there is a positioning groove 11. On the cover plate 2, there is integrally formed a baffle 10 corresponding to the positioning groove 11. On the L-shaped positioning plate 9, there are several mounting holes. On the rigid seal 3, there are several threaded holes 4. On the cover plate 2, there are through holes 5 corresponding to the threaded holes 4. The cross-section of the rigid seal 3 is in an A shape. On both sides of the bottom end of the rigid seal 3, there are respectively a first sealing portion 7 and a second sealing portion 8 with a circular cross-section. The threaded holes 4 are provided between the first sealing portion 7 and the second sealing portion 8 of the rigid seal 3. The threaded holes 4 and the through holes 5 are arranged corresponding to each other. In the mounting holes, there are bolts 6 passing through the through holes 5 and threadedly connected to the threaded holes 4. In the through holes 5 not corresponding to the mounting holes, there are also bolts 6 threadedly connected to the threaded holes 4. At the end of the filter housing 1 corresponding to the cover plate 2, there is a mounting groove 12. The rigid seal 3 is arranged in the mounting groove 12. On the side wall of the mounting groove 12 and on the cover plate 2, there are flexible seals corresponding to the rigid seal 3.

[0022] In the above embodiment, the bolt 6 passes through the through hole 5 and corresponds to the threaded hole 4. By rotating the bolt 6, the bolt 6 and the threaded hole 4 of the rigid seal 3 are threadedly connected. The bolt 6 pulls the rigid seal 3 to slide towards the cover plate 2, so that the first sealing portion 7 and the second sealing portion 8 on the rigid seal 3 squeeze the flexible seals on the filter housing 1 and the cover plate 2. Thus, the first sealing portion 7 seals the connection part of the filter housing 1 and the cover plate 2 by squeezing with the flexible seals on the filter housing 1 and the cover plate 2. At the same time, a sealed cavity is formed between the first sealing portion 7 and the second sealing portion 8, and the first sealing portion 7 and the second sealing portion 8 seal the through hole 5.

[0023] To sum up:

[0024] When the cover plate 2 is fixed to the filter housing 1 by the bolt 6, by tightening the bolt 6, the first sealing portion 7 on the rigid seal 3 cooperates with the flexible seal to seal the connection between the filter housing 1 and the cover plate 2. Since the cross-section of the rigid seal 3 is in an A shape, and the first sealing portion 7 and the second sealing portion 8 are respectively arranged on both sides of the bottom end of the rigid seal 3, a sealed cavity is formed between the first sealing portion 7 and the second sealing portion 8. This sealed cavity seals the mounting part of the bolt 6, thereby enhancing the sealing performance of the power filter and preventing rainwater from entering and causing corrosion.

[0025] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A novel corrosion-resistant power filter, comprising a filter housing (1), characterized in that: A cover plate (2) is provided on one side of the filter housing (1); a rigid seal (3) is provided between the cover plate (2) and the filter housing (1); a plurality of threaded holes (4) are provided on the rigid seal (3); a through hole (5) corresponding to the threaded hole (4) is provided on the cover plate (2); fixing bolts (6) corresponding to the threaded hole (4) are provided on the filter housing (1); the rigid seal (3) is provided with a first sealing portion (7) and a second sealing portion (8); the first sealing portion (7) is provided corresponding to the joint between the cover plate (2) and the filter housing (1); and the threaded hole (4) is provided between the first sealing portion (7) and the second sealing portion (8).

2. The novel corrosion-resistant power filter according to claim 1 is characterized in that: Mutually symmetrical L-shaped positioning plates (9) are provided on two opposite side walls of the filter housing (1), and mounting holes corresponding to the bolts (6) are provided on the L-shaped positioning plates (9).

3. The novel corrosion-resistant power filter according to claim 2 is characterized in that: The rigid seal (3) has an A-shaped cross section, the first seal (7) and the second seal (8) are arranged at two ends of the bottom of the rigid seal (3), the first seal (7) and the second seal (8) have circular cross sections, and the threaded hole (4) of the rigid seal (3) is arranged between the first seal (7) and the second seal (8).

4. The novel corrosion-resistant power filter according to claim 3 is characterized in that: A baffle (10) is provided on the cover plate (2), and a positioning groove (11) corresponding to the baffle (10) is provided on the filter housing (1).

5. The novel corrosion-resistant power filter according to claim 4 is characterized in that: An installation groove (12) corresponding to the rigid sealing member (3) is provided at the end of the filter housing (1) corresponding to the cover plate (2), and a flexible sealing member corresponding to the rigid sealing member (3) is provided on the side wall of the installation groove (12) and the cover plate (2).

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