CN215172201U - Sealing structure of filter element pull rod hole - Google Patents
Sealing structure of filter element pull rod hole Download PDFInfo
- Publication number
- CN215172201U CN215172201U CN202121592907.3U CN202121592907U CN215172201U CN 215172201 U CN215172201 U CN 215172201U CN 202121592907 U CN202121592907 U CN 202121592907U CN 215172201 U CN215172201 U CN 215172201U
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- China
- Prior art keywords
- pull rod
- filter core
- filter element
- end cover
- rod hole
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Abstract
The utility model provides a seal structure of filter core draw bar hole belongs to filtering material technical field, including filter core pull rod and filter core end cover, its characterized in that sets up the seal ring groove on the filter core end cover, establishes the sealing washer in, filter core end cover top filter core pull rod exposes the part and is equipped with spacing briquetting, is equipped with fastening nut on the spacing briquetting. The utility model discloses the concentricity of filter core end cover and filter core pull rod has been guaranteed to the structure, ensures that the circumference compression volume of O type sealing washer is even. Through the setting of 0 type sealing washer, guaranteed the leakproofness in pull rod hole, the medium can not leak outward from the screw-thread fit department in pull rod hole.
Description
Technical Field
The utility model relates to a seal structure of filter core draw bar hole belongs to filtering material technical field.
Background
In the prior art, after a filter element penetrates through a pull rod, a rubber flat gasket and a metal gasket are arranged on the part, higher than the pull rod, of an end cover of the filter element, and then the filter element is tightly pressed by a nut. Such a structure has the following problems: (1) the rubber gasket can only seal the ring surface of the filter element pull rod, and the seal (the spiral gap between the pull rod thread and the nut) in the axial direction of the pull rod is not available; (2) the pull rod hole in the filter element end cover is usually larger than the outer diameter of the pull rod, and during installation, the pull rod hole of the filter element is not concentric with the pull rod, so that the gap of the annular cavity of the filter element pull rod hole is not uniform, and the side with the large gap is easy to leak air.
Disclosure of Invention
The utility model provides a guaranteed filter core end cover and filter core pull rod the concentricity, can not follow the filter core pull rod hole's that the screw-thread fit department of pull rod hole leaks outward seal structure.
The technical scheme of the utility model is realized like this:
the technical scheme 1: the utility model provides a seal structure of filter core draw bar hole, includes filter core pull rod and filter core end cover, sets up the sealing washer groove on the filter core end cover, establishes the sealing washer in, filter core pull rod exposes the part above the filter core end cover and is equipped with spacing briquetting, is equipped with fastening nut on the spacing briquetting.
The technical scheme 2 is as follows: on the basis of the technical scheme 1, the sealing ring groove is further improved to be a 0-type sealing ring groove.
Technical scheme 3: on the basis of the technical scheme 2, the sealing ring is further improved as follows.
The technical scheme 4 is as follows: on the basis of the technical scheme 1, the height of the limiting pressing block is further improved to ensure that the height of the limiting pressing block does not exceed the lower end of the threaded section of the filter element pull rod after the fastening nut is screwed.
The technical scheme 5 is as follows: on the basis of the technical scheme 1, the filter element pull rod is further improved as follows, and the length of the filter element pull rod is higher than the upper end of the fastening nut.
The utility model has the advantages that: the utility model discloses the concentricity of filter core end cover and filter core pull rod has been guaranteed to the structure, ensures that the circumference compression volume of O type sealing washer is even. Through the setting of 0 type sealing washer, guaranteed the leakproofness in pull rod hole, the medium can not leak outward from the screw-thread fit department in pull rod hole.
The present invention will be further explained with reference to the drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of a novel sealing structure of a pull rod hole of a filter element of the present invention;
wherein, 1, a filter element pull rod; 2. fastening a nut; 3. a limiting pressing block; 4. a seal ring; 5. and (4) a filter element end cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the sealing structure of the filter element pull rod hole comprises a filter element pull rod 1 and a filter element end cover 5, wherein a sealing ring groove is formed in the filter element end cover 5, a sealing ring 4 is arranged in the sealing ring groove, a limiting pressing block 3 is arranged on the exposed part of the filter element pull rod 1 above the filter element end cover 5, and a fastening nut 2 is arranged on the limiting pressing block 3.
As a more preferred embodiment of the present invention, the seal ring groove is a 0-type seal ring groove, and the seal ring 4 is a 0-type seal ring. The filter element pull rod 1 is machined in a segmented mode, and a sealing section which is machined in a fine mode is matched and sealed with the O-shaped sealing ring.
As a more preferable embodiment of the invention, the height of the limiting pressing block 3 is to ensure that the fastening nut 2 does not exceed the lower end of the threaded section of the filter element pull rod 1 after being screwed. The limiting pressing block 3 is used for limiting the concentricity of the filter element end cover 5 and the filter element pull rod 1 in the radial direction, so that the uniform circumferential compression amount of the O-shaped sealing ring of the filter element is ensured, and the sealing effect is ensured; the height of the fastening nut 2 is limited in the axis direction, the fastening nut 2 is guaranteed not to exceed the lower end of the threaded section of the filter element pull rod 1 after the filter element is tightly pressed, the screwing pre-tightening force of the fastening nut 2 is guaranteed, meanwhile, the length of each section of the filter element pull rod 1 is matched for calculation, and the length of the matched sections of the filter element pull rod 1, the type 0 sealing ring and the fastening nut 2 is still enough under the condition that the total length of the filter element is compressed.
As a more preferable embodiment of the invention, the length of the filter element pull rod 1 is higher than the upper end of the fastening nut 2. The fastening nut 2 is used for the integral compression of the filter insert.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a seal structure of filter core draw bar hole, includes filter core pull rod and filter core end cover, its characterized in that sets up the seal ring groove on the filter core end cover, establishes the sealing washer in, filter core pull rod exposes the part above the filter core end cover and is equipped with spacing briquetting, is equipped with fastening nut on the spacing briquetting.
2. The seal arrangement of a filter cartridge tie rod hole of claim 1, wherein the seal ring groove is a type 0 seal ring groove.
3. The seal arrangement of the filter cartridge tie rod hole of claim 2, wherein the seal ring is a type 0 seal ring.
4. The seal structure of the filter element draw rod hole according to claim 1, wherein the height of the limiting pressing block is such that the height of the limiting pressing block does not exceed the lower end of the filter element draw rod thread section after the fastening nut is screwed.
5. The seal structure of a filter element draw rod hole according to claim 1, wherein the length of the filter element draw rod is higher than the upper end of the fastening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592907.3U CN215172201U (en) | 2021-07-14 | 2021-07-14 | Sealing structure of filter element pull rod hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121592907.3U CN215172201U (en) | 2021-07-14 | 2021-07-14 | Sealing structure of filter element pull rod hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215172201U true CN215172201U (en) | 2021-12-14 |
Family
ID=79394441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121592907.3U Active CN215172201U (en) | 2021-07-14 | 2021-07-14 | Sealing structure of filter element pull rod hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215172201U (en) |
-
2021
- 2021-07-14 CN CN202121592907.3U patent/CN215172201U/en active Active
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