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Multifunctional civil stop valve

A stop valve, multi-functional technology, applied in the direction of lifting valve, valve device, engine components, etc., can solve the problems of particles, poor viscosity adjustment performance, large fluid resistance, large opening and closing, etc., to meet the requirements of multi-functional, structural Formal scientific and reasonable effect

Inactive Publication Date: 2010-12-15
浙江敏康特阀门有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the opening and closing parts of the globe valve are mostly designed in the shape of a circular plate. The disadvantage is that, first of all, the opening and closing parts have a fixed direction during installation, which cannot be reversed, nor should it be reversed, which is largely limited. It improves the applicability of civil globe valves and the simple arrangement of pipelines
Secondly, the sealing pair of the opening and closing parts mostly adopts a flat contact sealing structure, which has large fluid resistance and requires a large force when opening and closing. It is not suitable for media with particles, high viscosity, and easy to coke, and the adjustment performance is poor. and other defects

Method used

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Embodiment Construction

[0014] The multi-functional civil shut-off valve of the present invention will be further described below in conjunction with the accompanying drawings of the description.

[0015] see figure 1 and figure 2 , a multifunctional civil shut-off valve of the present invention includes a valve body 7, a valve stem 1 whose lower part is placed inside the valve body 7, and a conical disc 2 fixed to the bottom end of the valve stem 1 through a buckle-type connection structure. The coupling structure includes an annular groove 11 at the bottom of the valve stem 1 and a groove 21 at the center of the top end of the valve disc 2. A traveler 12 is installed inside the annular groove 11, and a buckle joint extends upward from the top of the valve disc 2. part 22, the fastening part 22 wraps the traveler 12 in the annular groove 11, the valve cover 3 is arranged in the middle of the valve stem 1 and the lower end of the valve cover 3 is connected with the upper part of the valve body 1, t...

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Abstract

The invention relates to a multifunctional civil stop valve which comprises a valve body, a valve rod and a valve clack. The lower part of the valve rod is arranged in the valve body, the valve clack is fixed at the bottom end of the valve rod, a valve cover is arranged in the middle of the valve clack, the lower end of the valve cover is connected with the upper part of the valve body, the valve clack is conical, and the valve body is internally provided with a conical sealing surface which is matched with the valve clack. The multifunctional civil stop valve with the conical sealing surface has stronger capability of controlling the flow direction of a medium which has extremely small acting force on the valve rod in the axis direction, and therefore the opening or closing torque is little when the valve is opened or closed, and the valve is opened or closed without influenced by fluid resistance.

Description

technical field [0001] The invention relates to a valve, in particular to a multifunctional civil shut-off valve. Background technique [0002] The general stop valve is a forced sealing valve. When the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the valve disc, the resistance that the operating force needs to overcome is the valve stem. The friction force with the packing and the thrust generated by the pressure of the medium will cause the force to close the valve to be greater than the force to open the valve. Therefore, globe valves generally have strict requirements on the diameter of the valve stem, otherwise the valve stem will bend. Fault. [0003] In the prior art, the opening and closing parts of the globe valve are mostly designed in the shape of a circular plate. The disadvantage is that, first of all, the opening and closing parts have a fixed direction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/38
Inventor 张建敏骆薛平潘增林刘瑞代安元
Owner 浙江敏康特阀门有限公司
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