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Valve rod

A valve stem, polished rod technology, applied in valve devices, engine components, mechanical equipment and other directions, can solve the problems of inconvenient processing, unsuitable for thread rolling processing, etc., to achieve convenient thread rolling processing, reasonable structure, high mechanical properties. Effect

Inactive Publication Date: 2013-02-13
如皋透平叶片制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of most screws is not suitable for thread rolling processing, and it is inconvenient to process.

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing.

[0012] like figure 1 As shown, the valve stem of the present invention can be divided into three parts, the top is a threaded section 1, the valve ball in the remaining valves is connected, the middle is a polished rod section 2, and the tail 3 is connected with force-applying parts such as the handle of the valve; 1 and polished rod section 2 between the undercut groove structure. During the opening and closing process of the valve, the valve stem bears tension, pressure and torsional force, etc., and the force is more complicated. As the connecting part, the threaded section 1 needs to meet high mechanical performance requirements. Therefore, it is necessary to adopt the processing method of thread rolling to obtain the thread segment 1 with high mechanical properties. However, there is no undercut groove 4 on the traditional valve stem, which makes the thread rolling ...

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Abstract

The invention discloses a valve rod, which comprises a thread section (1), a polish rod part (2) and a part (3) connected with force application parts such as a valve handle, wherein a tool withdrawal groove (4) is formed between the thread section (1) and the polish rod part (2). By the valve rod, thread rolling is easily performed, and the thread section with high mechanical property can be obtained.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a valve stem which is easy to work. Background technique [0002] The valve stem is one of the key components in the valve, and the threaded section of the valve stem is connected with the valve ball. The valve stem is subjected to tension, compression and torsional forces during the opening and closing of the valve. Therefore, the mechanical performance requirements of the threaded part of the valve stem threaded section are relatively high. At present, thread rolling is the main way to process the thread in the valve stem, which can effectively process the thread and make the thread have higher strength. However, the structure of most screws is not suitable for thread rolling processing, and it is inconvenient to process. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the prior art and provide a valve stem which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K51/00
Inventor 陈弢朱永桂叶忠庆
Owner 如皋透平叶片制造有限公司