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Plunger of ball valve and its manufacture

A ball valve and ball plug technology, which is applied to the ball valve and its manufacturing field, can solve the problems of high manufacturing cost, increased manufacturing cost, trouble, etc., and achieve the effect of low manufacturing cost and simple process.

Inactive Publication Date: 2006-08-23
王宏仁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for manual welding steps, it is quite cumbersome, and the surface of the joint after welding is not flat, it must be polished and trimmed again, which increases the manufacturing cost
[0009] (2) The cost of circular pipe 80 is higher than that of flat plate
The thickness and inner and outer diameters of circular pipes are limited, and the cost is more expensive than flat plates of the same volume. Therefore, the overall manufacturing cost is relatively high

Method used

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  • Plunger of ball valve and its manufacture
  • Plunger of ball valve and its manufacture
  • Plunger of ball valve and its manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The ball plug manufacture method of ball valve of the present invention, as Figure 7 As shown, it includes the following steps:

[0041] 1. Prepare a plate 11: if Figure 8 As shown, a metal plate 20 with good ductility and a predetermined thickness is provided, the central part 20A of which is used for subsequent processing, and the peripheral part 20B will be cut (punched) to become waste, as shown in this figure The display is only a certain unit for continuous brewing.

[0042] 2. Forming of the first hemisphere 12: as Figure 9 and Figure 10 As shown, the flat plate 20 is punched into a cup-shaped semi-finished product 21 with a first mold 31 , and the semi-finished product 21 includes a first hemispherical portion 211 and a circular tube portion 212 .

[0043] 3. Forming 13 of the second hemispherical part: as shown in FIG. 11 , with a second mold 32 , punch the round tube part 212 of the semi-finished product 21 into a second hemispherical part 213 and leav...

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Abstract

In the present invention the plunger of ball valve includes a casing comprising one first hollow semi-sphere and one second hollow semi-sphere in certain thickness has one first opening, one second opposite opening and one clamping slot in preset position. The manufacture includes the steps of preparing one plate, forming the first semi-sphere, forming the second semi-sphere, machining the first opening and forming the clamping slot. The manufacture needs no welding or assembling one central pipe and has low cost.

Description

technical field [0001] The invention relates to a ball plug of a ball valve and a manufacturing method thereof. Background technique [0002] Such as Figure 1 to Figure 6 As shown, it is a conventional ball valve manufacturing method, which can be decomposed into the following steps: [0003] The first step 91: directly punching a circular pipe 80 into a spherical shell 81 with circular openings 811 on both sides by means of a die; [0004] The second step 92: Punch out a clamping groove 812 for clamping the valve stem on the peripheral surface of the ball housing 81; [0005] The third step 93: Next, a circular middle tube 70 whose outer diameter is equal to the diameter of the opening and whose length is equivalent to the length of the flow path of the ball plug is welded and fixed between the circular openings 811 on both sides of the ball housing 81; [0006] The fourth step 94: after roundness correction and surface polishing treatment, a hollow ball plug structure i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06
Inventor 王宏仁
Owner 王宏仁