A check valve plate for a filter

A check valve and filter technology, applied in the filter field, can solve problems such as poor sealing of check valve plates, poor wear resistance of ring wings, and small application range, so as to prolong service life and enhance Contact structure strength, effect of improving fuel efficiency

Active Publication Date: 2015-09-30
ANHUI TONGFENG RUBBER & PLASTIC IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent No. CN202914817U discloses a filter water inlet check valve sheet, which includes a frustum-shaped sheet body and a trumpet-shaped ring wing in the middle of the ring wall. The inner wall of the step hole is coated with wear-resistant layer, the inner wall where the upper and lower parts of the step hole meet is provided with an annular protrusion, the structure is simple, the design is reasonable, and the manufacturing process is simple and convenient. Poor performance, small scope of application

Method used

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  • A check valve plate for a filter
  • A check valve plate for a filter

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Embodiment Construction

[0012] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 and figure 2 As shown, a check valve plate for a filter includes a truncated conical body 1 and a conical annular surface 2, and an annular protrusion 3 is provided on the annular outer edge of the conical annulus 2, and the truncated conical The outer wall of the sheet body 1 is provided with an annular step 4, and the outer wall of the annular step 4 is provided with two annular sealing protrusions 5, and the gap between the two annular sealing protrusions 5 is 3mm-5mm. The center of the terraced sheet body 1 is provided with a stepped through hole 6, and the step of the stepped through hole 6 is a ring structure, which can effectively reduce the contact gap between the check valve plate and the inlet pipe and between the check valve plate and the valve core, and improve the performance of the check valve. Integ...

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Abstract

The invention belongs to the technical field of filters, and particularly relates to a check valve sheet for filters. The check valve sheet comprises a boss-shaped sheet body and a conical ring surface, an annular protrusion is arranged on a part, at an annular outer edge, of the conical ring surface, an annular step is arranged on the outer wall of the boss-shaped sheet body, two annular sealing protrusions are arranged on the outer wall of the annular step, the distance between the annular sealing protrusions is 3-5mm, a stepped through hole is formed in the center of the boss-shaped sheet body, and a step of the stepped through hole is of an annular structure. Contact gaps between the check valve sheet and an inlet pipe as well as between the check valve sheet and a spool can be effectively decreased, integral sealability and abrasion resistance can be improved, and fuel efficiency of an engine can be increased. The check valve sheet is simple in structure, wide in application range and long in service life.

Description

technical field [0001] The invention belongs to the technical field of filters, in particular to a check valve plate for a filter. Background technique [0002] Filters include air filters, oil filters and fuel filters. Filters in the engine system are mainly used to filter out harmful impurities, reduce wear and tear on engine components, and prolong the service life of these components. The structure of each component in the filter will affect the performance of the filter, such as the check valve for the filter. Patent No. CN202914817U discloses a filter water inlet check valve plate, which includes a frustum-shaped plate body and a trumpet-shaped ring wing in the middle of the ring wall. The inner wall of the step hole is coated with wear-resistant layer, the inner wall where the upper and lower parts of the step hole meet is provided with an annular protrusion, the structure is simple, the design is reasonable, and the manufacturing process is simple and convenient. P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/00
CPCF16K15/00
Inventor 项宗武
Owner ANHUI TONGFENG RUBBER & PLASTIC IND
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