A kind of regulating valve with gear box and using method thereof

A technology of gear boxes and discs, applied in the field of regulating valves, can solve the problems of inability to achieve a fully sealed state, difficult processing, large leakage, etc., and achieve the effects of good sealing, good anti-vibration, and low cost

Active Publication Date: 2020-05-26
李祥庆
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The double-seat regulating valve mainly includes: valve body, upper valve seat, lower valve seat, upper valve disc, lower valve disc, the valve body is equipped with inlet channel and outlet channel, the inlet channel is arranged horizontally, and the outlet channel is in a horizontal Y-shaped structure Set, between the inlet channel and the outlet channel, there is a cavity wall with a horizontal U-shaped structure, the upper valve seat is set on the upper part of the cavity wall, the lower valve seat is set on the lower part of the cavity wall, and the upper ends of the upper and lower valve seats are respectively provided with upper and lower valve seats. The sealing surface of the lower valve seat, the upper and lower valve discs are fixed in series at the lower part of the valve stem, the lower valve stem is set between the upper and lower valve discs, the upper valve disc is set on the upper part of the outlet channel, and the lower valve disc is set on the inlet channel. There are upper and lower valve disc sealing surfaces in the middle of the upper and lower valve discs respectively. By moving the upper valve stem up and down, the distance between the upper and lower valve disc sealing surfaces and the upper and lower valve seat sealing surfaces can be controlled respectively, thereby The function of regulating the outlet pressure and flow of the valve is that due to the influence of processing errors and assembly, when the upper valve stem is moved, the distance between the sealing surface of the upper disc and the sealing surface of the upper valve seat cannot be compared with that of the lower disc. The distance between the sealing surface and the sealing surface of the lower valve seat is the same. When the valve needs to be closed, the fully sealed state cannot be achieved, and the leakage is large. At the same time, the upper valve disc and the lower valve disc are fixedly arranged, which is difficult to process and high in cost. technical flaws

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  • A kind of regulating valve with gear box and using method thereof

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Embodiment Construction

[0013] according to figure 1 It can be seen that this regulating valve with a gear box includes: valve body 1, upper valve seat 7, lower valve seat 3, upper valve disc 6, lower valve disc 4, valve cover 11, upper valve stem 12, bracket 16 and drive In the device 20, the valve body 1 is provided with an inlet channel 2 and an outlet channel 24, the inlet channel 2 is arranged horizontally, the outlet channel 24 is arranged in a horizontal Y-shaped structure, and a cavity with a horizontal U-shaped structure is arranged between the inlet channel 2 and the outlet channel 24 The upper valve seat 7 is set on the upper part of the cavity wall, the lower valve seat 3 is set on the lower part of the cavity wall, the upper ends of the upper and lower valve seats 7 and 3 are respectively provided with upper and lower valve seat sealing surfaces, and the upper and lower valve discs 6, 4 are installed in series under the upper valve stem 12, the lower valve stem 5 is arranged between the ...

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Abstract

The invention relates to a regulating valve with a gearbox, and an application method thereof. The application method includes 1, performing a sealing test, injecting a test medium from an inlet channel when a valve is closed, and observing the leakage condition of an outlet channel; 2, when no sealing is formed between a lower valve clack sealing surface and a lower valve seat sealing surface, allowing a regulating device to drive an inner valve stem to rotate, and through interaction between an outer regulating thread and an inner regulating thread, driving a lower valve clack to move downwards until sealing is formed between the lower valve clack sealing surface and the lower valve seat sealing surface; 3, when no sealing is formed between an upper valve clack sealing surface and an upper valve seat sealing surface, allowing the regulating device to drive the inner valve stem to rotate, and through interaction between the outer regulating thread and the inner regulating thread, driving an upper valve clack to move downwards until sealing is formed between the upper valve clack sealing surface and the upper valve seat sealing surface; 4, mounting the qualified valve onto a pipeline to adjust the pressure or flow. The regulating valve has the advantages of convenience in adjustment and high adjustment precision.

Description

technical field [0001] The invention relates to a regulating valve, in particular to a regulating valve with a gear box and a usage method thereof. Background technique [0002] The double-seat regulating valve mainly includes: valve body, upper valve seat, lower valve seat, upper valve disc, lower valve disc, the valve body is equipped with inlet channel and outlet channel, the inlet channel is arranged horizontally, and the outlet channel is in a horizontal Y-shaped structure Set, between the inlet channel and the outlet channel, there is a cavity wall with a horizontal U-shaped structure, the upper valve seat is set on the upper part of the cavity wall, the lower valve seat is set on the lower part of the cavity wall, and the upper ends of the upper and lower valve seats are respectively provided with upper and lower valve seats. The sealing surface of the lower valve seat, the upper and lower valve discs are fixed in series at the lower part of the valve stem, the lower ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F16K1/36F16K1/44F16K1/32F16K27/02F16K31/53F16K31/60
CPCF16K1/32F16K1/36F16K1/44F16K27/02F16K31/53F16K31/60
Inventor李祥庆
Owner李祥庆