An automatic exhaust and automatic liquid stop device

Abstract

The invention discloses an automatic exhausting and automatic liquid stopping device. The device comprises a top cover and an accommodating body, wherein the accommodating body is divided into two parts, namely, an inner cavity and an outer cavity; both the top of the inner cavity wall and the top of the outer cavity wall are connected with the top cover; an exhausting hole and a liquid inlet are arranged on the top cover at the inner cavity part; a liquid stopping filter membrane is arranged at the upper part of an inner cavity liquid outlet at the bottom end of the inner cavity; an air inlet capable of being opened and closed is arranged on the top cover at the outer cavity part; an automatic exhausting device is arranged at an outer cavity liquid outlet at the lower part of the outer cavity. The device is simple in structure, reliable in effect and convenient to use.

Description

technical field [0001] The invention relates to an automatic exhaust and automatic liquid stop device. technical background [0002] The automatic exhaust and automatic stop liquid device is a very widely used device. For example, it is used in the field of medical equipment to realize the automatic exhaust and stop liquid function of the infusion set, which is convenient for clinical administration; Guarantee for systems where no gas enters the system and continuous or regular addition of liquid reactants is required. [0003] Currently used automatic exhaust and automatic liquid stop devices, most of the liquid stop parts are set at the liquid outlet at the bottom of the device, and the liquid stop parts can be buoy fittings or membrane materials. The following problems will occur in the device: 1) When the liquid stop part is a buoy fitting or membrane material, after the liquid stop part performs the liquid stop function, the liquid level in the device will stay at the ...

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Problems solved by technology

[0003] Currently used automatic exhaust and automatic liquid stop devices, most of the liquid stop parts are set at the liquid outlet at the bottom of the device, and the liquid stop parts can be buoy fittings or membrane materials. The following problems will occur in the device: 1) When the liquid stop part is a buoy fitting or membrane material, after the liquid stop part performs the liquid stop function, the liquid level in the device will stay at the junction of the liquid stop part and the liquid outlet , causing the liquid level in the device to be too low. In the subsequent liquid infusion process, special operations are required to raise the liquid level in the device again. The operation is cumbersome; and the purity are greatly affected. If there is a little impurity or particles, the buoy fittings cannot match the liquid outlet, thus losing the automatic liquid stop function; The tightness requirements at the place are very high, so the production and processing methods of the above two accessories are very demanding, such as the precision of the mold, the selection of raw materials, the control of the production and processing process, etc., all require a lot of verification and control, a little careless Will directly cause the device to lose the automatic liquid stop function

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