Combined unloading valve for commercial vehicles

Abstract

The invention relates to the field of air valves of commercial vehicle braking systems and discloses a commercial vehicle combined type unloading valve. A filter (2) is arranged in a valve body (1), the valve body (1) comprises an upper valve main body (11) and a lower valve main body (12) which are connected in the up-down direction, and the side face of the lower valve main body (12) is provided with an air inlet connector (121), an air outlet connector (122) and an air outlet cavity (123) connected with the air outlet connector (122); a first air inlet passageway (13) is formed in the upper valve main body (11), a mounting cavity (14) penetrating through the lower end face of the upper valve main body (11) is formed in the upper end face of the upper valve main body (11), and the filter (2) is mounted in the mounting cavity (14) and comprises an upper mounting end cover (3), a molecular sieve filtering net (4) and a base (5); and a reverse blowing passageway is formed in the valve body (1) simultaneously. According to the commercial vehicle combined type unloading valve, the simple pressure relief action can be conducted, and meanwhile compressed air can be subjected to filtering and condensation water separating; and the compressed air is filtered from the interior of the filtering net to the exterior of the filtering net, and filtering accuracy is higher.

Description

technical field [0001] The invention relates to the field of air valves of commercial vehicle braking systems, in particular to a combined unloading valve for commercial vehicles. Background technique [0002] At present, with the development of the transportation and logistics industry, commercial vehicles are strongly welcomed by the market. With the use of commercial vehicles in different environments, it is necessary to put forward higher requirements for the braking system of commercial vehicles. In general. There is no independent filter tank in the air circuit of the unloading valve, so when the compressed air enters the brake air circuit, it does not get enough condensed water, and at the same time, the air carries a lot of impurities, which affects the service life of the subsequent brake components. A combined unloading valve is generally simply connected to a filter outside the unloading valve. Although it can perform the filtering function, the integrity and str...

AI Technical Summary

Problems solved by technology

There is no independent filter tank in the air circuit of the unloading valve, so when the compressed air enters the brake air circuit, it does not get enough condensed water, and at the same time, the air carries a lot of impurities, which affects the service life of subsequent brake components

A combined unloading valve is generally simply connected to a filter outside the unloading valve. Although it can perform the filtering function, the integrity and strength of the entire unloading valve are poor, and the filter cannot be effectively protected from external influences. , while the service life of the filter is shorter

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