Ball wedge flap valve and clip connecting method

A ball valve and valve seat technology, which is applied in the direction of sleeve/socket connection, lift valve, valve device, etc., can solve problems that affect the disassembly of the butt joint connection, the sealing hoop and the holding hoop are stuck, and the difficulty of butt joint disassembly of the hoop connection, etc.

Inactive Publication Date: 2004-02-18
ZHEJIANG HUAXIA VALVE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, if the connecting driving nut is tightened too much, for the double ferrule type in the prior art, after the driving nut withdraws from the connection, the sealing ferrule and the holding ferrule may both be stuck on the deformed pipe and cannot slide back and forth or even Affect the disassembly of the butt joint. For the single hoop type, in addition to the difficulty of disassembling the butt joint of the hoop connection, it may also cause the hoop to bulge excessively and fail. Therefore, the hoop connection method of the prior art, whether it is a single hoop Type or double hoop type, both stipulate the number of tightening circles of the installation wrench

Method used

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  • Ball wedge flap valve and clip connecting method
  • Ball wedge flap valve and clip connecting method
  • Ball wedge flap valve and clip connecting method

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Embodiment Construction

[0015] Figure 5 and Figure 6 are clamp connection type straight pipe joints - an example of clamp connection method used for pipe joints, Figure 7, Figure 8 and Figure 9 are clamp connection type ball wedge needle valves - ball wedge valve An example of both the opening and closing pair and the clamp connection method are used for needle valves. In these two embodiments, when the connecting driving nut (4) is screwed on the male thread of the connecting body (1), the connecting driving nut drives the holding hoop (3) through its inner tapered surface, and the holding hoop (3) bent by the round steel wire The holding hoop drives the outer cone of the head of the sealing hoop into the inner cone of the connecting body through the inner tapered surface of the tail of the sealing hoop (2); under the cooperation of the inner and outer tapered surfaces, the head of the sealing hoop is tightened on the connected body The surface of the pipe completes the sealing connection of the pip...

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Abstract

A valve with spherical wedge flap has an opening-closing set of spherical wedge flap and a sealing set of spherical wedge. The diameter of spherical wedge is slightly greater than that of spherical seat and the center of said spherical seat is slightly higher than reference plane, so controlling the valve easily. Its fastening hoop connection method features that the joint, sealing hoop, grasp hoop and nut are used. Its advantages are efficiency sealing and reliable joint.

Description

technical field [0001] The patent belongs to the field of mechanical engineering, and relates to a ball wedge flap opening and closing pair, a ball wedge sealing pair of a valve and a clamp connection method. Among them, the ball wedge pair and the sealing pair of ball wedge are an application of the spherical wedge-socket butt joint positioning pair in the CN01130564.9 patent application in a valve. Background technique [0002] A valve is a switching device for a fluid delivery pipeline. The valve disc and valve seat that play a switch role in the valve are collectively referred to as the opening and closing pair. According to the geometric shape of the opening and closing disc, there are plane opening and closing pairs (coordination between plane and plane), spherical opening and closing pairs (ball and ball socket, ball and cone socket or ball and circular orifice), oblique wedge opening and closing pairs (The oblique wedge and the wedge socket cooperate) and the conic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/14F16L21/00
Inventor 徐长祥
Owner ZHEJIANG HUAXIA VALVE
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