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Low-torque diaphragm valve with opening and closing indicating device

An indicating device and low-torque technology, which is applied in the field of valve production and low-torque diaphragm valves, can solve the problems of increased operating torque of diaphragm valves, unfavorable valve opening, closing and automatic control, and no indication function, so as to reduce operating torque Effect

Pending Publication Date: 2022-04-01
温州诺盟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the existing diaphragm valve does not have an indication function when it is opened and closed, it is easy to cause the valve to be closed tightly during the closing process, causing the diaphragm valve to leak the medium and cause a safety production accident; The diameter of the diaphragm valve increases and becomes larger, which is not conducive to the opening, closing and automatic control of the valve

Method used

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  • Low-torque diaphragm valve with opening and closing indicating device
  • Low-torque diaphragm valve with opening and closing indicating device
  • Low-torque diaphragm valve with opening and closing indicating device

Examples

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Embodiment Construction

[0020] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0021] Such as Figure 1-4 As shown, the present invention is a low-torque diaphragm valve with an opening and closing indicating device, including a valve body 1, a valve cover 2, a diaphragm 3, a valve stem 4 and an operating mechanism 5, and the valve cover 2 fixes the diaphragm 3 on the valve body. On the body 1, one end of the valve stem 4 is connected with the diaphragm 3, and the other end is connected with the operating mechanism 5; connected, the other end is rotatably fixed to the bonnet 2; one end of the lifting valve rod 41 is connected to the diaphragm 3, and the other end is placed in the rotating rod sleeve 42 to be connected to the signal feedback device 6 and threaded to the rotating rod sleeve 42. The above-mentioned operating mechanism 5 can drive the rotating rod sleeve 42 to rotate forward (or reverse) 360° along the valve cover 2 under...

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Abstract

The invention relates to a low-torque diaphragm valve with an opening and closing indicating device, which is characterized in that a valve rod comprises a lifting valve rod and a rotating rod sleeve, one end of the rotating rod sleeve is in linkage connection with an operating mechanism, and the other end of the rotating rod sleeve is rotatably fixed with a valve cover; and the other end of the lifting valve rod is arranged in the rotating rod sleeve, is connected with the signal feedback device and is in threaded connection with the rotating rod sleeve. The invention has the beneficial effects that the valve rod is split to form the lifting valve rod and the rotating rod sleeve, and the traditional hard driving is changed into rotating spiral driving, so that the operation torque of an operation mechanism can be reduced to the greatest extent; secondly, when the rotating rod sleeve spirally ascends or descends, the signal feedback device synchronously sends out an opening or closing signal, and an operator is reminded in real time to avoid insufficient medium flow or medium leakage caused by insufficient opening or untight closing of the diaphragm valve and damage of the diaphragm piece due to excessive pressure; the use safety of the diaphragm is ensured; and the service life of the diaphragm is prolonged.

Description

technical field [0001] The invention relates to a valve, more specifically to a low-torque diaphragm valve with an opening and closing indicating device, which is mainly used in the field of valve production. Background technique [0002] Diaphragm valve is a kind of fluid cut-off valve that uses diaphragm as opening and closing part to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the bonnet. Because the existing diaphragm valve does not have an indication function when it is opened and closed, it is easy to cause the valve to be closed tightly during the closing process, causing the diaphragm valve to leak the medium and cause a safety production accident; The diameter of the diaphragm valve increases and becomes larger, which is not conducive to the opening, closing and automatic control of the valve. Contents of the invention [0003] In order to solve the above technical problems, the present inven...

Claims

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Application Information

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IPC IPC(8): F16K7/16F16K31/50F16K31/60F16K31/53F16K37/00
Inventor 谭冬阳李满然
Owner 温州诺盟科技有限公司
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