Mitre valve for generating nitrogen through pressure swing adsorption

Abstract

The invention discloses a mitre valve for generating nitrogen through pressure swing adsorption. The mitre valve for generating the nitrogen through the pressure swing adsorption comprises a valve element, a valve rod and a cylinder, the cylinder comprises a cylinder body, a piston arranged in the cylinder body, reset springs and a piston rod, and the two ends of the valve rod are fixedly connected with the valve element and the piston rod; the mitre valve for generating the nitrogen through the pressure swing adsorption further comprises a piston movement state indicating mechanism which is fixedly connected to the piston and a reset spring compression amount regulating mechanism which is arranged between the cylinder body and the valve rod, the cylinder body is divided into two cavities by the piston, the cavity which is near the valve element is a compressed air containing cavity, the reset springs are arranged in the other cavity, and a through hole which penetrates through the two ends of the valve element is formed in the valve element. The mitre valve for generating the nitrogen through the pressure swing adsorption is beneficial for improving the regeneration effect of a pressure-swing absorber and shortening the regeneration time, the movement state of the piston can be reflected visually, and the regulation of the compression amount of the reset springs is facilitated.

Description

technical field

[0001] The invention relates to the technical field of pressure swing adsorption nitrogen production equipment, in particular to a bevel valve used for pressure swing adsorption nitrogen production. Background technique

[0002] The pressure swing adsorption method is a new gas separation technology, which has been developed rapidly abroad since the late 1960s and early 1970s. Its principle is to separate the gas mixture by using the difference in the "adsorption" performance of molecular sieves for different gas molecules. Using air as raw material, nitrogen and oxygen in the air are separated by using a high-efficiency, high-selection solid adsorbent to selectively adsorb nitrogen and oxygen.

[0003] The core equipment of the existing pressure swing adsorption nitrogen production device mostly adopts two pressure swing adsorption towers, and activated carbon molecular sieves are installed in the adsorption towers, and the two pressure swing adsorption towe...

Images