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Mitre valve for generating nitrogen through pressure swing adsorption

A technology of pressure swing adsorption and bevel valve, which is applied in the direction of valve details, valve device, valve operation/release device, etc. It can solve the problems of complex cylinder form and inconvenient observation of piston movement state, and achieve simple structure and high action frequency , the effect of reducing the requirement

Active Publication Date: 2015-05-20
CHENGDU ZHENZHONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the regeneration of the adsorption tower in the above-mentioned prior art, and the inconvenient observation of the motion state of the piston in the existing structure, when adapting to the pressure change of the compressed gas in the adsorption tower, the form of the cylinder required to meet the technological requirements is complicated. The present invention A bevel valve for pressure swing adsorption nitrogen production is provided

Method used

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  • Mitre valve for generating nitrogen through pressure swing adsorption

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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a bevel valve for pressure swing adsorption nitrogen production includes a valve core 1, a valve stem 2 and a cylinder 4, and the cylinder 4 includes a cylinder body, a piston 6 arranged in the cylinder body, a return spring 7 and Piston rod 9, the two ends of the valve rod 2 are fixedly connected with the valve core 1 and the piston rod 9 respectively, and also include a piston movement state indicating mechanism fixedly connected on the piston 6, a valve rod arranged between the cylinder body and the valve rod 2 Return spring 7 compression amount adjustment mechanism, the piston 6 divides the cylinder body into two cavities, the cavity near the valve core 1 is a compressed air chamber, and the return spring 7 is arranged in another cavity, the valve core 1 is also provided with through holes running through its two ends.

[0028] Specifically, the present invention is arranged on the valve seat of the bevel valve on the pressure equalizing ...

Embodiment 2

[0030] This embodiment is further improved on the basis of embodiment 1, as figure 1As shown, the piston movement state indicating mechanism includes a piston rod extension 10, the piston rod extension 10 is partly located in the cavity provided with the return spring 7, and one end of the piston rod extension 10 is fixedly connected to the piston 6, The other end of the piston rod extension 10 is located outside the cylinder 4 .

[0031] The compression adjustment mechanism of the return spring 7 includes an anti-shock spring 11 and a cylindrical fixed sleeve 3, both ends of the fixed sleeve 3 are provided with external threads, and the cylinder body is provided with an internal thread through hole for fixing One end of the sleeve 3 is threadedly connected with the internally threaded through hole, and the center line of the fixed sleeve 3 is collinear with the center line of the valve stem 2. The fixed sleeve 3 is located between the valve core 1 and the cylinder body, and t...

Embodiment 3

[0035] This embodiment is further limited on the basis of embodiment 1 or embodiment 2, as figure 1 As shown, the cylinder 4 is a horizontal bar single-acting cylinder, and at least three annular sealing rings 5 ​​are provided along the side of the piston 6 .

[0036] The piston rod is integrated with the valve rod 2 , and the piston rod 9 is integrated with the piston rod extension 10 .

[0037] It also includes a spool nut 8, the valve stem 2 is in the shape of a stepped shaft with an external thread at one end, the spool 1 is provided with a central hole, the spool 1 is pierced on the valve stem 2, and the spool 1 and The valve stem 2 is fixed by a spool nut 8 .

[0038] The external thread is a fine pitch thread.

[0039] The horizontal bar single-acting cylinder has a simple structure and low cost; at least three annular sealing rings 5 ​​are provided to further strengthen the sealing performance of the cylinder air intake chamber, which is conducive to ensuring the sta...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/122F16K37/00
CPCF16K31/1221F16K37/0008
Inventor 李富常聂海涛黄永富刘承范张仁友张仁明胡国波曾彦
Owner CHENGDU ZHENZHONG ELECTRIC
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