Production method of ball valve core

A manufacturing method and valve core technology, which can be applied to valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of increased cost of ball valve cores and the need for more materials for ball valve cores, saving materials and high yield , the effect of increasing strength

Inactive Publication Date: 2009-02-11
黄勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ball valve spool made by the above method is better in water resistance and sealing than the ball valve spool made by foundry casting, and saves materials; blank, and the bottom of the groove is transparent, so the groove wall can extend downward during stamping. In order to ensure the milling allowance and the strength of the groove wall, the wall of the stem groove is required to be thicker, so that the outer spherical shell wall of the entire ball valve core is thicker. thicker, more materials are needed to make the ball valve core, which leads to an increase in the cost of the entire ball valve core

Method used

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  • Production method of ball valve core
  • Production method of ball valve core
  • Production method of ball valve core

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Experimental program
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Effect test

Embodiment 1

[0036] In the manufacture method of this ball valve spool, the metal plate 4 that selects to make the outer spherical shell 1 of ball valve spool 1 of the present invention is stainless steel plate, the thickness of stainless steel plate is about 1mm~1.5mm, according to the size of ball valve spool with cutting machine It is cut into the required length and its structure schematic diagram is as follows figure 1 shown;

[0037] Select a suitable mold for making the metal round tube 5, put the stainless steel plate on the mold to bend it into a U shape, and then use a punch or punching machine on the mold to punch the U-shaped plate into a stainless steel round tube 5. Its structural diagram is as follows figure 2 and image 3 Shown; With welding machine, the pipe seam of stainless steel round pipe 5 is welded to form weld seam 51, and stainless steel round pipe 51 is put into spherical forming mold by extruding and shrinking at both ends of round pipe, and the middle part exp...

Embodiment 2

[0044] The plate 4 for making the outer spherical shell 1 is a copper plate, and the manufacturing process of the valve stem connection seat 2 is as follows: a mold is made according to the shape and size of the valve stem connection seat 2, and molten copper metal liquid is poured into the mold, and the mold After cooling at room temperature to form the green body of the valve stem connecting seat 2, it is demolded, and the green body of the valve stem connecting seat 2 undergoes surface polishing and deburring treatment to obtain the finished product of the valve stem connecting seat 2. The inner straight pipe 3 and the outer spherical shell 1 are fixedly connected together by performing circular seam welding on the connecting portion where the two ends of the inner straight pipe 3 and the outer spherical shell 1 meet. Other technological process is the same as embodiment 1, repeats no more.

Embodiment 3

[0046] The plate 4 for making the outer spherical shell 1 is a copper plate, and the manufacturing process of the valve stem connecting seat 2 is as follows: first make the valve stem connecting seat 2 body, and then mill the valve stem groove on the valve stem connecting seat 2 body by a milling machine After 21, the finished product of valve stem connecting seat 2 is obtained. Other technological process is the same as embodiment 1, repeats no more.

[0047] The wear resistance, hardness and toughness of the ball valve spool made by the above method can almost guarantee the strength required by the ball valve, but the strength of the valve stem groove 21 and the valve stem connection part can be strengthened, saving materials .

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Abstract

The invention provides a method for producing the core of a ball valve, which belongs to the technical field of valve production, and solves the problems of thick wall of outer ball shell of the valve core, a large amount of material, and high production cost in the prior art. The production method of the core of the ball valve is realized through the following steps: firstly, the blank body of the outer ball shell is produced; secondly, a valve handle connecting seat is produced; thirdly, an inner straight pipe is installed; and fourthly, surface treatment is carried out. Through the production method, the material is greatly saved, and the cost for the core of the ball valve is reduced; the precision, the thickness and the integrity of the produced core of the ball valve can be guaranteed, and the intensity of the valve handle connecting seat and the valve handle connecting part is enhanced; the technological process is simplified, the reliability is good, and the rate of finished products is high; the appearance of the produced core of the ball valve is beautiful, and the core is comparatively perfect; galvanization is not needed, therefore, the environment protection property is good.

Description

technical field [0001] The invention relates to a method for manufacturing a valve core, in particular to a method for manufacturing a ball valve core, and belongs to the technical field of valve manufacturing. Background technique [0002] Valves are widely used in modern society. Especially in the technical field of plumbing pipe fittings, there are many kinds of valves in the prior art, mainly ball valves, angle valves, globe valves, etc., wherein the structure of the ball valve is relatively simple, mainly because the spool of the ball valve is relatively simple. The spool of the ball valve has a symmetrical spherical structure as a whole, with a cylindrical through hole in the middle, and a stem groove connected to the valve stem at the center of the outer spherical surface of the spool. When working, it rotates The valve stem aligns the cylindrical through hole of the spool with the inlet and outlet of the ball valve, and when it stops working, reversely turns the val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F16K5/06
Inventor 黄勇
Owner 黄勇
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