A filter radial sealing structure

Abstract

The present invention discloses a radial sealing structure of a filter, comprising a filter seat and a filter cartridge, the filter cartridge being located below the filter seat, a conversion joint being provided between the filter seat and the filter cartridge, two ends of the conversion joint being respectively connected with the filter seat and the filter cartridge, a pressing cover being fixed to the lower end of the outer side surface of the conversion joint, a connecting seat being provided on the outer side surface of the filter seat, the connecting seat being located inside the pressing cover and the lower end of the connecting seat being fitted with the inner side surface of the pressing cover, a connecting piece being provided on the outer side wall of the connecting seat, the upper end of the connecting piece being buckled with the upper end surface of the filter cartridge, a sealing ring groove being provided on the outer side surface of the connecting seat, a sealing ring being installed in the sealing ring groove, and the sealing ring being located between the filter seat and the connecting seat. The radial sealing structure of the filter changes the traditional surface seal and adopts a new radial seal, which will not cause oil leakage and is easy to disassemble, thereby greatly improving the convenience of use.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engines, in particular to a radial sealing structure of a filter. Background Art

[0002] Traditional filters use face sealing, which requires a high degree of parallelism between the two sealing end faces. Loose threads can easily cause oil leakage from the gasket. In addition, this type of seal requires screwing it into place and then tightening it 3 / 4 of a turn during installation. During this time, there is friction between the sealing ring and the filter seat, and the compression of the tightened sealing ring is difficult to control. This makes disassembly difficult and may even require physical destruction. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a filter radial sealing structure, which changes the traditional surface seal and adopts a new radial seal, will not cause oil leakage, and is easy to disassemble, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a filter radial sealing structure, comprising a filter seat and a filter cartridge, the filter cartridge being located below the filter seat, a conversion joint being arranged between the filter seat and the filter cartridge, the two ends of the conversion joint being respectively connected with the filter seat and the filter cartridge, a pressing cover being fixed to the lower end of the outer side surface of the conversion joint, a connecting seat being arranged on the outer side surface of the filter seat, the connecting seat being located inside the pressing cover and the lower end of the connecting seat being fitted with the inner side surface of the pressing cover, a connecting piece being arranged on the outer side wall of the connecting seat, the upper end of the connecting piece being buckled with the upper end surface of the filter cartridge, a sealing ring groove being arranged on the outer side surface of the connecting seat, a sealing ring being installed in the sealing ring groove, and the sealing ring being located between the filter seat and the connecting seat.

[0005] As a preferred technical solution of the present invention, the filter seat and the conversion joint, as well as the conversion joint and the pressing cover are all connected by threads.

[0006] As a preferred technical solution of the present invention, a rubber pad is provided at the lower end of the compression cover.

[0007] As a preferred technical solution of the present invention, a protrusion is provided on the inner side of the pressing cover at a position corresponding to the rubber pad, and the pressing cover is pressed tightly against the surface of the rubber pad via the protrusion.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the radial sealing structure of the filter forms a sealing belt by setting a connecting seat and a connecting piece to achieve sealing between the filter seat and the filter cartridge, and a sealing ring is set between the filter seat and the connecting seat so that the sealing line is inside the filter seat, ensuring that even if the filter is loose and offset, the compression amount of the sealing ring will remain unchanged and oil leakage will not occur. At the same time, the filter seat and the conversion joint, and the conversion joint and the tightening cover are all connected by threads to ensure easy disassembly, facilitate workers' operation, and greatly improve the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention;

[0010] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0011] In the figure: 1 filter seat, 2 sealing ring, 3 conversion joint, 4 filter cartridge, 5 connecting seat, 6 connecting piece, 7 tightening cover, 8 rubber pad. DETAILED DESCRIPTION

[0012] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is Figure 1 Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0013] Example 1: Please refer to Figure 1-2 The present invention provides a technical solution: a radial sealing structure of a filter, comprising a filter seat 1 and a filter cartridge 4, the filter cartridge 4 is located below the filter seat 1, a conversion joint 3 is provided between the filter seat 1 and the filter cartridge 4, the two ends of the conversion joint 3 are respectively connected to the filter seat 1 and the filter cartridge 4, a pressing cover 7 is fixed to the lower end of the outer side of the conversion joint 3, the filter seat 1 and the conversion joint 3, the conversion joint 3 and the pressing cover 7 are all connected by threads, which is convenient for disassembly and installation, a connecting seat 5 is provided on the outer side of the filter seat 1, the connecting seat 5 is located in the pressing cover 7 and the lower end of the connecting seat 5 is connected to the pressing cover 7 fits together, a connecting piece 6 is provided on the outer side wall of the connecting seat 5, the upper end of the connecting piece 6 is buckled with the upper end face of the filter cartridge 4 to achieve sealing between the filter cartridge 4 and the connecting seat 5, and a sealing ring groove is provided on the outer side of the connecting seat 5, a sealing ring groove is installed in the sealing ring groove, and the sealing ring 2 is located between the filter seat 1 and the connecting seat 5. The radial sealing structure of the filter adopts a radial sealing method so that its sealing line is in the filter seat 1. The limited position surface in the sealing structure ensures that even if the filter is loose and offset, the compression amount of the sealing ring 2 remains unchanged and no oil leakage occurs.

[0014] During use: first thread the conversion joint 3 into the pipe mouth of the filter seat 1, then place the sealing ring 2 into the sealing groove of the connecting seat 5 and press it into the outer end of the pipe mouth of the filter seat 1. After pressing in, tighten the tightening cover 7 so that the upper surface of the tightening cover 7 fits with the lower surface of the connecting seat 5.

[0015] Example 2: The difference from Example 1 is that a rubber pad 8 is provided at the lower end of the pressing cover 7, and a protrusion is provided on the inner side of the pressing cover 7 corresponding to the position of the rubber pad 8. The pressing cover 7 is pressed tightly against the surface of the rubber pad 8 through the protrusion. By providing the rubber pad 8, the pressing cover 7 can be pressed, thereby improving the sealing performance of the pressing cover 7 and the conversion joint 3.

[0016] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A filter radial sealing structure, comprising a filter seat (1) and a filter cartridge (4), wherein the filter cartridge (4) is located below the filter seat (1), and is characterized in that: A conversion joint (3) is provided between the filter seat (1) and the filter cartridge (4), and the two ends of the conversion joint (3) are respectively connected to the filter seat (1) and the filter cartridge (4). A pressing cover (7) is fixed to the lower end of the outer side surface of the conversion joint (3). A connecting seat (5) is provided on the outer side surface of the filter seat (1), and the connecting seat (5) is located in the pressing cover (7) and the lower end of the connecting seat (5) is in contact with the inner side surface of the pressing cover (7). A connecting piece (6) is provided on the outer side wall of the connecting seat (5), and the upper end of the connecting piece (6) is buckled with the upper end surface of the filter cartridge (4). A sealing ring groove is provided on the outer side surface of the connecting seat (5), and a sealing ring (2) is installed in the sealing ring groove. The sealing ring (2) is located between the filter seat (1) and the connecting seat (5).

2. A filter radial sealing structure according to claim 1, characterized in that: The filter seat (1) and the conversion joint (3), as well as the conversion joint (3) and the pressing cover (7), are all connected via threads.

3. The radial sealing structure of a filter according to claim 1, characterized in that: A rubber pad (8) is provided at the lower end of the pressing cover (7).

4. A filter radial sealing structure according to claim 3, characterized in that: A protrusion is provided on the inner side of the pressing cover (7) at a position corresponding to the rubber pad (8), and the pressing cover (7) is pressed tightly against the surface of the rubber pad (8) via the protrusion.

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