A two-position two-way solenoid valve with improved structure

Abstract

The invention discloses a two-position two-way electromagnetic valve with an improved structure. The two-position two-way electromagnetic valve comprises a valve body and a pilot assembly, wherein a gas guide hole is formed in the valve body; the pilot assembly comprises a sleeve; a first connection part extends from the top end of the valve body; a second connection part extends from the bottom end of the sleeve; the first connection part is in fastening connection with the second connection part through a bolt; a thread part is arranged on the outer wall of the bolt; the thread part is composed of a left-hand thread and a right-hand thread which are correspondingly arranged in a matching manner; a fastening nut matched with the left-hand thread and a locking nut matched with the right-hand thread are connected to the bottom end of the bolt; the valve body is further provided with a valve hole; the inner end of the valve hole is communicated with the gas guide hole; a check valve is arranged at the middle part of the valve hole; the outer end of the valve hole is fixedly connected with a valve seat; the valve seat is provided with a thin hole; the valve hole is communicated with the atmosphere through the thin hole; and a pressure release valve is arranged in the valve seat. The two-position two-way electromagnetic valve disclosed by the invention is simple and reasonable in structure, convenient and fast to install, low in manufacturing cost, and good in voltage stabilization effect; a connection structure between the valve body and the sleeve is stable and reliable; and the service life of the two-position two-way electromagnetic valve is long.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a two-position two-way solenoid valve with an improved structure. 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 ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing two-position two-way solenoid valve usually has the following defects due to unreasonable structural settings: First, because the air inlet is connected to the air source, when the air pressure of the air source is unstable, it is easy to cause the air outlet to be damaged. Air pressure fluctuations, especially when the pressure at the air inlet is higher than the rated air pressure of the gas-consuming equipment, 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, the more commonly used The method is to set a pressure stabilizing valve between the air source and the air inlet, but the use of the stabilizing valve will not only make the pipeline structure setting complicated, but also increase the cost of use; secondly, the valve body and the sleeve of the pilot assembly The setting of the installation connection structure is unreasonable. Specifically, at present, the valve body and the sleeve usually adopt two connection structures. One is to set the valve plate fixedly connected with the valve body, and press the bottom end of the sleeve on the valve plate. Between the valve body and the valve body, the defect of this installation method is that the installation structure is complicated, which makes the installation more cumbersome and inconvenient; the other is to extend the external thread connection part at the bottom end of the casing, and the casing pipe connects with the valve body through the external thread connection part. Fixed connection, the advantage of this installation method is that the structure is simple and the installation is quick, but the disadvantage is that due to the high air pressure in the valve cavity of the valve body, under the long-term vibration and impact of high-pressure gas, the gap between the casing and the valve body The threaded connection structure tends to loosen easily, resulting in an unstable connection between the sleeve and the valve body, which affects the service life of the valve

Images