brake valve spool filter

Abstract

A valve element filter net for a brake valve comprises an upper circular end bracket, a lower circular end bracket, and support columns which are connected between the upper circular end bracket and the lower circular end bracket, wherein a cylindrical filter net body is arranged on the inner sides or the outer sides of the support columns; the upper end of the filter net body is connected with the upper circular end bracket; the lower end of the filter net body is connected with the lower circular end bracket; the upper circular end bracket and the lower circular end bracket are connected with an annular upper sealing edge and an annular lower sealing edge of which the cross sections are wedge-shaped; the upper end face of the upper sealing edge is a conical surface with a high outer part and a low inner part and the lower end face of the lower sealing edge is also a conical surface with a low outer part and a high inner part; flexible connection is adopted between the upper and lower sealing edges and the upper and lower circular end brackets. The valve element filter net for the brake valve has the advantages that the structure is simple, the installation is convenient, the valve element filter net can be loaded into the exterior of the brake valve, in particular a brake main valve, the filter net is directly arranged around a valve element, solid particles carried in gas are prevented from entering the valve element, thus the work reliability of the valve element is greatly improved, and the occurrence of a brake accident is avoided.

Description

technical field [0001] The invention relates to the technical field of internal components of a brake valve, in particular to a filter screen for a brake valve spool. Background technique [0002] At present, there are generally filters in the pipeline of the braking system, which are used to filter the solid particle impurities flowing with the gas in the air pipe, so as to ensure that each braking component is not affected by the solid particle impurities and ensure the reliability of its work. However, due to the distance between the filter and the spool of each valve, it cannot be avoided that the filtered gas will be polluted by other newly generated solid particles before entering the spool. Sometimes solid particles will still enter the spool and affect the valve core. The sealing of the air leakage caused the accident, and a new solution needs to be proposed. Contents of the invention [0003] The purpose of the present invention is to provide a brake valve spool ...

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