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Pressure Equalizing Angle Valve for Nitrogen Generator

A technology of bevel valve and valve core, applied in the direction of valve device, valve operation/release device, valve details, etc., can solve the problems of unfavorable adsorption capacity, achieve good regeneration effect, increase overflow speed, and simple structure

Active Publication Date: 2017-11-21
苏州新思气体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The adsorption tower in the regeneration state in the above-mentioned prior art is kept open to the atmosphere, and the oxygen in the molecular sieve in it overflows to complete the regeneration process. However, the oxygen precipitated in this process will always stay in the gap in the regeneration adsorption tower. To solve the problem of adsorption capacity in the next adsorption process, the invention provides a pressure equalizing bevel valve for a nitrogen making device

Method used

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  • Pressure Equalizing Angle Valve for Nitrogen Generator

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, it includes a valve core 1, a valve stem 2 and a cylinder 4. The cylinder 4 includes a cylinder body, a piston 6 and a return spring 7 arranged in the cylinder body, and the two ends of the valve stem 2 are respectively connected to the valve core 1 and the The piston rod of the cylinder 4 is fixedly connected, and the valve core 1 is provided with through holes running through both ends thereof.

[0024] Specifically, the present invention is arranged on the valve seat of the bevel valve on the pressure equalizing pipe connecting the two adsorption towers. When the bevel valve completes the pressure equalization action and any one of the pressure swing adsorption towers is regenerated, the other is in the working state. The gas in the pressure swing adsorption tower enters the pressure swing adsorption tower under the regeneration state through the set through hole, and the nitrogen content in this part of the gas is at least 99% under normal...

Embodiment 2

[0026] This embodiment is further improved on the basis of embodiment 1, 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 .

[0027] In order to reduce the volume of the present invention and simplify the structure of the present invention, the piston rod and the valve rod 2 are integrated.

[0028] 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 .

[0029] 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 air intake chamber of the cylinder 4, which is beneficial to ensure the stable operation of the pre...

Embodiment 3

[0032] The present embodiment is further limited on the basis of embodiment 2, as figure 1 As shown, it also includes a cylindrical fixed sleeve 3, one end of the fixed sleeve 3 is fixedly connected to the cylinder body, the other end of the fixed sleeve 3 is provided with external threads, and the center line of the fixed sleeve 3 is in line with the valve stem 2 The center lines are collinear, and the fixed sleeve 3 is located between the valve core 1 and the cylinder body.

[0033] The external thread is a fine pitch thread.

[0034] The fixed sleeve 3 provided is used for the connection of the present invention with the valve seat, that is, the valve seat is provided with an internal thread hole matching the external thread, and the fixed sleeve 3 and the valve seat are threaded to facilitate adjustment of the valve core and the valve seat in the closed state. The compressive stress between the seats ensures the sealing effect when the pressure equalizing tube is disconne...

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Abstract

The invention discloses a pressure equalizing bevel angle valve structure of a nitrogen-making device. The pressure equalizing bevel angle valve structure comprises a valve element (1), a valve rod (2) and an air cylinder (4), the air cylinder (4) comprises a cylinder body, a piston (6) and a return spring (7), the piston (6) and the return spring (7) are arranged in the cylinder body, the two ends of the valve rod (2) are fixedly connected with the valve element (1) and a piston rod of the air cylinder (4), and the valve element (1) is provided with a through hole penetrating through the two ends of the valve element (1). The pressure equalizing bevel angle valve structure is beneficial for improving the regeneration effect of pressure swing absorption towers and shortening regeneration time.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/122
CPCF16K31/1221F16K51/00
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 苏州新思气体技术有限公司
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