A gas extraction device

Abstract

The invention discloses a gas-taking device, which comprises a gas-taking valve body and a positioning slot. A positioning chamber is arranged on the right side of the gas-taking valve body, and a positioning spring is arranged inside the positioning chamber. The inner side is provided with an air intake valve joint, and the left side of the air intake valve joint is provided with a joint compartment, the left side of the joint compartment is provided with an air intake compartment, and the interior of the air intake compartment is provided with an air intake valve core. The outer surface of the air valve core is a return force spring one, and the inside of the right side of the return force spring one is provided with a notch, the upper end of the air intake valve core is provided with a vent hole, and the lower end of the air intake valve core is fixed with a sealing block, so The lower end of the sealing block is provided with a return force spring two. The set air intake valve core can be fitted with the air intake chamber to avoid affecting the subsequent practicality of the air intake valve core. The set return spring can automatically reset the air intake valve core to avoid inconvenient adjustment during use and affect the function of the device. Practical, and the set notch can facilitate the collection of gas.

Description

technical field [0001] The invention relates to the technical field of gas extraction devices, in particular to a gas extraction device. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetic, and it is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. The solenoid valve can be matched with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, speed control valves, etc. [0003] When using the gas inhalation device on the market, during the process of using a syringe to take gas, the ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a gas extraction device, which solves the problem that the medical personnel need to press the electric switch when using the syringe to obtain gas in the existing gas extraction device on the market, which will cause the gloves to be polluted. This reduces the practicability of the device, and the air intake hole needs to be connected with an extension tube to the air intake port. When the power is off, there will be a large amount of air in the tube, which will easily cause a decrease in gas purity and air pollution, and the joint of the air intake valve will not be tightly connected during use. , prone to offset and gap problems during use

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