Track-torsion connecting bidirectional hard sealing butterfly valve

A kind of hard sealing, butterfly valve technology, applied in the field of orbital torsion connection bidirectional hard sealing butterfly valve, can solve the problem of no bidirectional sealing performance, easy damage to the sealing surface, short service life, etc., to achieve small torque, eliminate friction, improve the use of effect of life

Active Publication Date: 2012-07-04
ANHUI TONGDU FLOW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of butterfly valve inevitably has a long opening and closing time. At the same time, when opening and closing, the sealing surface has different degrees of friction, the sealing surface is easily damaged, and the service life is short.
However, the existing o

Method used

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  • Track-torsion connecting bidirectional hard sealing butterfly valve
  • Track-torsion connecting bidirectional hard sealing butterfly valve
  • Track-torsion connecting bidirectional hard sealing butterfly valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] Such as figure 1 with figure 2 As shown, a two-way hard-sealed butterfly valve with orbital twisting connection includes a valve body 6, a valve plate 8 located in the valve body 6, and a rotating device for controlling the rotation of the valve plate 8. The rotating device for controlling the rotation of the valve plate 8 includes a hand wheel 2, Screw rod 16, and nut 1 matching with screw rod 16, nut 1 and hand wheel 2 are fixed together by stop screw, nut 1 is set on screw rod 16, and nut 1 is fixed on valve body 6 through gland 3 On the rotating sleeve 9 of the rotating sleeve 9, there is a guide sleeve 5 in the rotation sleeve 9, the guide sleeve 5 is fixed on the screw rod polished rod 14 by screws, and the guide sleeve 5 is threadedly connected with the screw mandrel, as Figure 5 with Image 6 As shown, on the guide sleeve 5, there is a through chute 17 along the length direction of the screw rod 16. In order to prevent the guide sleeve 5 from rotating togeth...

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Abstract

The invention provides a track-torsion connecting bidirectional hard sealing butterfly valve, which resolves the problems that an existing track butterfly valve is long in starting time and a valve plate is prone to water leakage when beaten and pressed reversely and mainly comprises a valve body, a valve body inner valve plate and a rotary device for controlling rotation of a valve plate. The rotary device comprises a hand wheel, a screw and a nut matched with the screw rod. The butterfly valve is characterized in that the nut is fixed on a rotary sleeve of the valve body, a guide sleeve is positioned in the rotary sleeve and in threaded connected with the screw, the guide sleeve can only move up and down in the rotary sleeve, a spiral torsion track is arranged on the outer surface of a polish rod and the screw, one end of a shaft on the valve plate is in clearance fit with the torsion track on the polish rod of the screw through a guide shaft, and an upper shaft and a lower shaft of the valve plate are respectively in contact with an eccentric wheel on one side of a guide pin in the valve plate. The on-off sensitivity of the valve is improved, and sealing performance of the valve plate is improved.

Description

technical field [0001] The invention relates to a valve, in particular to a two-way hard-sealed butterfly valve with orbit twist connection. Background technique [0002] At present, the existing butterfly valves are generally driven by worm gears, and the upper and lower shafts and the valve plate are generally connected by taper pins or keys. The valve is opened and closed by the 90-degree rotation of the upper and lower shafts. This kind of butterfly valve inevitably has a long opening and closing time. At the same time, when opening and closing, the sealing surface has different degrees of friction, the sealing surface is easily damaged, and the service life is short. However, the existing orbital butterfly valve has a linear connection between the guide pin and the contact surface of the upper and lower shafts, the connection is unstable, there is a phenomenon of reverse pressure and water leakage, and it does not have the performance of bidirectional sealing. Conten...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K31/50F16K37/00
Inventor 汪班本
Owner ANHUI TONGDU FLOW TECH
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