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Stop valve

A globe valve and valve stem technology, which is applied in the field of globe valves, can solve the problems that the disc sealing surface and the valve seat sealing surface cannot be tightly combined, the sealing pair is easily damaged, and the service life is short, so as to achieve simple structure and improve sealing performance and service life, the effect of long service life

Active Publication Date: 2019-10-15
凯瑞特阀业集团有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As an extremely important cut-off valve, the globe valve is sealed by applying torque to the valve stem, and the valve stem exerts pressure on the valve disc in the axial direction, so that the sealing surface of the valve disc and the sealing surface of the valve seat fit closely, preventing The medium leaks along the gap between the sealing surfaces. The sealing pair of the globe valve is composed of the disc sealing surface and the valve seat sealing surface. The valve stem drives the valve disc to move vertically along the center line of the valve seat. When the valve is used in viscous ore slurry containing solid particles, the medium is easy to stick to the sealing pair, so that the sealing surface of the disc and the seat cannot be tightly combined, resulting in leakage. At the same time, the solid particles contained in the medium are trapped On the sealing pair, it is easy to damage the sealing pair and the service life is short

Method used

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as Figure 1-10 Shown is a preferred embodiment of the present invention.

[0016] A shut-off valve comprising

[0017] Valve body 1, the valve body 1 is provided with an inlet flow channel 101, an outlet flow channel 102 and a valve seat 103 for separating the inlet flow channel 101 and the outlet flow channel 102, and the valve seat 103 is provided with a coaxial flow hole 104 And the stopper hole 105, the diameter of the stopper hole 105 is larger than the diameter of the flow hole 104.

[0018] The bonnet 10 is fixedly mounted on the upper end of the valve body 1 to close the upper opening of the outlet channel 102 . The bonnet 10 is provided with a stepped bonnet through hole.

[0019] Valve disc 2, valve disc 2 is arranged in the outlet flow channel 102, valve disc 2 includes an upper cylindrical section 21 and a lower cyl...

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Abstract

The invention relates to a stop valve. The stop valve comprises a valve body, a valve cover, a valve clack, a valve rod, a pull rod, a left connecting rod, a right connecting rod, a left scraper, a right scraper, a lifting component, a first handle, a first spring, a blocking component and an adjusting component, wherein the valve body is internally provided with an inlet flow channel, an outlet flow channel and a valve seat; the valve seat is provided with a throughflow hole and a stopping hole; and the valve cover is fixedly arranged at the upper end of the valve body. The stop valve disclosed by the invention is simple and reasonable in structure and has the advantages of good sealing property and long service life; and by use of the stop valve, mediums attached to the valve clack and the valve seat can be effectively scraped, and the sealing property of the valve clack during closing is improved; and the service life of the valve clack during closing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of pipeline valves, in particular to a shut-off valve. Background technique [0002] As an extremely important cut-off valve, the globe valve is sealed by applying torque to the valve stem, and the valve stem exerts pressure on the valve disc in the axial direction, so that the sealing surface of the valve disc and the sealing surface of the valve seat fit closely, preventing The medium leaks along the gap between the sealing surfaces. The sealing pair of the globe valve is composed of the disc sealing surface and the valve seat sealing surface. The valve stem drives the valve disc to move vertically along the center line of the valve seat. When the valve is used in viscous ore slurry containing solid particles, the medium is easy to stick to the sealing pair, so that the sealing surface of the valve disc and the seat sealing surface cannot be tightly combined, resulting in leakage, and the solid particles c...

Claims

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Application Information

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IPC IPC(8): F16K1/04F16K1/32F16K1/36F16K27/02F16K27/08F16K31/60B08B1/00B08B1/04
CPCF16K1/04F16K1/32F16K1/36F16K27/0209F16K27/08F16K31/60B08B1/165B08B1/32
Inventor 黄洪刚
Owner 凯瑞特阀业集团有限公司
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