Unloading valve with cooling and automatic drain

Abstract

The invention discloses an unloading valve with cooling and automatic sludge discharge devices. The unloading valve comprises a valve body with an air induction passage outlet and an air venting passage inlet, a cooling device with an air inlet, an air outlet and a sludge discharge port, and a sludge discharge device, wherein the air induction passage outlet and the air venting passage inlet are respectively communicated with the air inlet and the air outlet; the unloading valve is characterized by further comprising an air induction one-way valve located in the air induction passage outlet, between the air induction passage outlet and the air inlet or in the air inlet. The unloading valve not only can enable the sludge discharge device to work regularly and guarantee sludge discharge effect, but also can cool high-temperature and high-pressure gases, and has better effect on coagulating separation and elimination of impurities, such as greases and the like.

Description

technical field [0001] The invention relates to components in the air brake system of automobiles, in particular to an unloading valve with a cooling and automatic sewage discharge device. Background technique [0002] The existing unloading valve comprises a valve body provided with an air inlet channel outlet and an air outlet channel inlet, a cooling device provided with an air inlet, an air outlet port and a sewage outlet, and a sewage discharge device connected to the sewage discharge port, wherein the cooling device and the sewage discharge device are In order to cool the high temperature and high pressure gas entering the valve body in time, separate and discharge impurities such as oil and water, so as to avoid accelerated aging of rubber parts in the valve body and on the gas path and corrosion of metal parts. However, since the gas entering the cooling device will flow back into the valve body, the pressure of the gas in the cooling device will decrease, which will...

AI Technical Summary

Problems solved by technology

However, because the gas entering the cooling device will flow back into the valve body, the pressure of the gas in the cooling device will decrease, which will affect the work of the sewage discharge device controlled by the gas pressure, which will not only lead to incomplete sewage discharge, but also cause pollution due to impurities. Staying at the sewage outlet leads to incomplete closure of the sewage outlet, which in turn causes the unloading valve to fail to deliver high-pressure gas to the outside

In addition, due to the complex and unreasonable structure of the existing cooling device, not only can not quickly cool the high-temperature and high-pressure gas, but also the effect of precipitation and separation of impurities such as oil and water is not good.

Images