Electromagnetic valve for blood purification

Abstract

The invention discloses an electromagnetic valve for blood purification. The bottom of the inner cavity of a valve body is provided with an annular boss; a seal gasket for sealing the central hole of the annular boss is positioned in the inner cavity of the valve body; the inner cavity of the valve body is provided with an elastic isolating piece, the upper end of the isolating piece is compressed tightly and fixed by a coil body, and the lower end of the isolating piece is fixedly connected with the seal gasket; the lower end of a slide iron core extends into an isolating body and is fixedly connected with the isolating body; and the inner hole at the upper end of the slide iron core is internally provided with a spring, and the upper end of the spring is connected with the coil body in a propping manner. The electromagnetic valve for blood purification provided by the invention has the advantages of good biology performance and high corrosion resistance, and can not rust, can not cause medium pollution, and can not be aged even if liquids with high corrosivity such as a disinfectant, acid liquor and the like are used; and the actions of the slide iron core are flexible and reliable, and the noise of the electromagnetic valve is lower during starting and closing.

Description

A solenoid valve for blood purification technical field The invention belongs to the technical field of electromagnetic valves, and in particular relates to an electromagnetic valve for blood purification. Background technique Solenoid valve is an important part used in blood purification equipment, mainly used to control the conduction or disconnection of the pipeline. Commonly used solenoid valves are composed of valve body, coil body, sliding iron core and gasket, etc. The disadvantages are: 1. The valve body is made of metal material, which is easy to rust, and it is easy to precipitate metal ions to cause medical fluid pollution. 2. There is no isolation between the inner cavity of the valve body and the inner hole of the coil, and the liquid easily enters the valve body, causing the spring and the sliding iron core to rust, and the metal parts such as the spring and the sliding iron core are easy to contaminate the liquid, and there is a spring inside the coil 1....

AI Technical Summary

Problems solved by technology

1. The valve body is made of metal material, which is easy to rust, and it is easy to precipitate metal ions to cause medical fluid pollution

2. There is no isolation between the inner cavity of the valve body and the inner hole of the coil, and the liquid easily enters the valve body, causing the spring and the sliding iron core to rust, and the metal parts such as the spring and the sliding iron core are easy to contaminate the liquid, and there is a spring inside the coil 1. The sliding iron core is not easy to clean and disinfect, so it is not suitable for the environment with high requirements on the cleanliness of medical fluids

3. The sliding iron core is directly in contact with the bottom of the coil when working, which increases the noise when the solenoid valve is opened and closed

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