Filter core end cover and filter core

Abstract

The invention provides a filter core end cover which comprises an end cover body and a through hole arranged on the end cover body, wherein a boss is arranged on the end cover body, the end cover body and the boss from an integrated structure, the through hole penetrates through the end cover body and the boss, and the boss is an elastic boss capable of elastically springing back when being pressed in the axial direction of the through hole. The invention further provides a filter core which comprises a filter core body, wherein the filter core end cover is respectively arranged at the upper end and the lower end of the filter core body. The filter core end cover and the filter core are simple in structure, convenient in process and good in sealing effect.

Description

technical field [0001] The invention relates to a filter core, in particular to a filter core end cover and a filter core. Background technique [0002] At present, the filter elements on the market are mainly composed of upper and lower end caps, paper cores, central tubes, non-woven sealing rings, rubber special-shaped rings, etc. Most of the product end caps use the method of direct ultrasonic welding of non-woven sealing gaskets on the upper and lower end caps. To achieve the sealing effect; or put the non-woven fabric directly on the injection mold, and use one-time injection molding to achieve the sealing effect; or achieve the sealing effect by installing a sealing ring. [0003] The Chinese invention patent with the application number of 200810121623.9 discloses a filter element, the end cover sealing ring 5 is made of non-woven material, and the non-woven material is welded on the end cover body 1 by ultrasonic welding, as figure 1 and 2 shown. This method of bon...

AI Technical Summary

Problems solved by technology

This method of bonding non-woven fabrics has the following problems: 1. The end cap is completed in two processes from injection molding to welding of non-woven fabrics, and the efficiency is not high; 2. Ultrasonic welding has equipment instability, which makes the welded non-woven fabrics If the cloth is not firm or the strength is too high, the non-woven fabric will be damaged by welding, and the appearance is not beautiful; if the welding is not firm, the non-woven fabric will fall off during the actual use of the filter element, and if the welding is excessive, the non-woven fabric will burn. If the non-woven fabric is burnt, it will cause damage and shedding of the non-woven fabric. The shedding caused by these two phenomena will cause the non-woven fabric to fall into the filter seat and block the lubricating oil passage, thereby affecting the normal operation of the engine; 3. Ultrasonic welding When using non-woven fabrics, the fine fibers on the non-woven fabrics will form a floating phenomenon under the action of ultrasonic vibration, polluting the environment of the operating site

This method of bonding non-woven fabrics has the following problems: 1. There is a non-woven fabric cutting process, and the non-woven fabric needs to be cut first, and then injected, and the process is cumbersome; 2. Non-woven fabric materials are required; 3. Non-woven fabric fibers are easy to float , forming pollution

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