A two-position two-way solenoid valve

Abstract

A two-position two-way solenoid valve disclosed by the present invention includes a valve body, the valve body is respectively provided with an air inlet and an air outlet, and the valve body is provided with an air guide hole communicating with the air outlet. A pilot assembly for controlling the conduction or cut-off of the passage between the air guide hole and the air inlet is provided. The valve body is also provided with a valve hole, the inner end of the valve hole communicates with the air guide hole, and the middle part of the valve hole A one-way valve is provided, the outer end of the valve hole is fixedly connected with a valve seat, the valve seat is provided with fine holes, the valve hole communicates with the atmosphere through the fine holes, and a pressure relief valve is arranged inside the valve seat. The structure of the invention is simple and reasonable, and the manufacturing cost is relatively low. When the pressure of the air inlet is higher than the rated air pressure of the gas equipment, the check valve and the fine hole are firstly used for preliminary pressure relief. When the pressure of the air inlet is further increased When using the pressure relief function of the pressure relief valve, the effect of rapid pressure relief is achieved, thereby effectively making the pressure stabilization effect of the present invention better.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a two-position two-way solenoid valve. Background technique [0002] Valve products are widely used in fluid control in various technical fields, and the two-position two-way solenoid valve is one of them, which is well known and common. The structure of the common two-position two-way solenoid valve currently on the market usually includes a valve body, which is respectively provided with an air inlet and an air outlet. There is a pilot assembly for controlling the conduction or cutoff of the passage between the air guide hole and the air inlet. When the pilot component is energized, the moving iron core of the pilot component is moved away from the air guide hole by the magnetic attraction force, so that the input end of the air guide hole is conducted, and a gas passage is formed between the air inlet, the air guide hole and the air outlet. The gas in the air port flows to th...

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Problems solved by technology

[0003] However, when the above-mentioned two-position two-way solenoid valve is in use, since the air inlet is connected to the air source, when the air pressure of the air source is unstable, it is easy to cause fluctuations in the air pressure at the air outlet, especially when the pressure at the air inlet is high. When the rated air pressure of the gas-consuming equipment is used, it will seriously affect the stability of the working performance of the gas-consuming equipment, and even cause damage to the gas-consuming equipment

In order to solve this problem, a common method is to install a pressure stabilizing valve between the air source and the air inlet, but the use of a stabilizing valve will not only complicate the setting of the pipeline structure, but also increase the cost of use.

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