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Mitre valve with opening height convenient to observe

A technology of opening height, angle valve, applied in valve details, valve device, valve operation/release device, etc., can solve the problem of high failure frequency, inconvenient judgment of valve core stroke, inconvenience to determine the fault of the angle valve, etc. To achieve the effect of high frequency of action

Inactive 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 above prior art, the spool and the piston at both ends of the valve stem are respectively located in the valve seat and the cylinder body, which makes it difficult to judge the stroke of the spool, and at the same time, the bevel valve for pressure equalization generally has a high fault frequency. The structural form is inconvenient to judge the problem of the fault of the bevel valve. The present invention provides a bevel valve whose opening height is easy to observe

Method used

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  • Mitre valve with opening height convenient to observe

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Embodiment 1

[0022] Such as figure 1 Shown, comprise valve core 1, valve rod 2 and cylinder 4, described cylinder 4 comprises cylinder body, the piston 6 that is arranged in cylinder body, piston rod 9 and return spring 7, the two ends of described valve rod 2 are respectively connected with One end of the valve core 1 and the piston rod 9 is fixedly connected, and the other end of the piston rod 9 is fixedly connected to one end of the piston 6, and also includes a piston rod extension 10. The piston 6 divides the cylinder into two cavities, close to the valve The cavity of the core 1 is a compressed air chamber, and the return spring 7 is arranged in another cavity. 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 On the piston 6 the other end of the piston rod extension 10 is located outside the cylinder 4 .

[0023] The present invention is arranged on the valve seat of the...

Embodiment 2

[0025] 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 arranged along the side of the piston 6, and the annular sealing rings 5 ​​are all O-rings.

[0026] In order to reduce the volume of the present invention and simplify the structure of the present invention, the piston rod 9 is integrated with the valve rod 2 , and the piston rod 9 is integrated with the piston rod extension 10 .

[0027] 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 .

[0028] 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 sea...

Embodiment 3

[0031] 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.

[0032] The external thread is a fine pitch thread.

[0033] 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 mitre valve with an opening height convenient to observe. The mitre valve comprises a valve element, a valve rod and an air cylinder. The air cylinder comprises a cylinder body, a piston arranged in the cylinder body, a piston rod and a reset spring. The two ends of the valve rod are fixedly connected with the valve element and one end of the piston rod respectively, and the other end of the piston rod is fixedly connected to one end of the piston. The mitre valve further comprises a piston rod extending part, the cylinder body is divided into two cavities through the piston, the cavity close to the valve element is a compressed air containing cavity, the reset spring is arranged in the other cavity, the piston rod extending part is partly located in the cavity provided with the reset spring, one end of the piston rod extending part is fixedly connected to the piston, and the other end of the piston rod extending part is located outside the air cylinder. The moving condition of the piston of the mitre valve can be easily judged.

Description

technical field [0001] The invention relates to the technical field of pressure swing adsorption nitrogen production equipment, in particular to an angled valve whose opening height is easy to observe. 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 towers alternatel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/122F16K37/00
CPCF16K31/122F16K37/00
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 CHENGDU ZHENZHONG ELECTRIC
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