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Combined valve cover type break valve

A globe valve and combined valve technology, applied in the field of globe valves, can solve the problems of hindering the flow of the medium in the pipeline, easy rust of the valve stem thread, low reliability, etc., to improve the sealing performance, prevent accidental loosening, social Good economical effect

Inactive Publication Date: 2009-01-14
陈雨民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of the manufacturing process and structure of the valve, there are still problems such as poor reliability, poor sealing performance, short service life, long-term corrosion of the valve stem thread by the medium and easy to rust, and the valve diameter is smaller than the size of the pipe to a certain extent. Defects such as hindering the flow of the medium in the pipeline

Method used

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  • Combined valve cover type break valve

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Embodiment Construction

[0011] 1. The combined valve cover globe valve of the present invention adopts the structural design of the combined valve cover to ensure reliable sealing under harsh working environments, and provides the panel installation function;

[0012] 2. The valve stem 4 thread is designed above the sealing packing 10, which avoids the erosion of the valve stem thread and the scouring of the thread lubricant by the medium;

[0013] 3. The design of the packing bolt 5 enables the valve to perform packing adjustment in the closed or open position;

[0014] 4. The non-rotating spool 14 avoids scratches on the sealing surface and provides repeated non-leakage closures;

[0015] 5. Adjusting valve stem and stainless steel heat-treated conical valve disc can be provided;

[0016] 6. Through the improvement of the valve flow channel, it becomes a full-bore flow channel with large flow capacity;

[0017] 7. Various connection types, including double ferrule connection, union butt welding, ...

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Abstract

The invention discloses a combination cover-typed cut-off valve, relates to a cut-off valve part which is adopted by all the industries installed with pipelines, such as petroleum, chemical, metallurgical, power, and real estate industries, etc. and plays a role of fastening a valve stem and a valve body; the middle of the valve body (15) is provided with a joint nut (13) which fixes a valve cover (7) on the valve body (15); the center of the valve cover (7) is axially provided with the valve stem (4); a valve core (14) is connected with the valve body (15) at the lower end of the valve stem (4); the upper part of the valve cover (7) is provided with a lock nut (6); the middle part of the valve cover (7) is provided with a panel thin nut (8); a packing pad (12), a packing support (11), a filling (10), and an upper packing pad (9) are arranged between the valve cover (7) and the valve stem (4) from down to up. As the valve core is connected with the valve stem by a movable rivet in design, the leakage due to the friction scratch which is caused by the valve core sealing surface and the valve body when the valve core sealing surface rotates is avoided, thereby greatly improving the sealing performance and prolonging the service life of the valve.

Description

technical field [0001] The present invention is a shut-off valve used in all pipeline installation industries such as petroleum, chemical industry, metallurgy, electric power, real estate, etc., and belongs to the technical field of shut-off valve manufacturing. Background technique [0002] Due to the wide use of valves and the large demand, domestic valve manufacturers have carried out a series of improvements and improvements to the valve manufacturing technology with different technologies and innovative means: mainly by changing the structure and sealing form of the valve, improving the sealing performance; the disc and seat structure of the new shut-off valve has changed the disadvantage that the disc is easy to fall off, adjusted the flow rate, and has sensitivity; the new process makes the valve easy to install, maintain and disassemble; it is suitable for use under special conditions. By changing its manufacturing structure, the valve products have different functio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/02F16K1/48F16K1/36F16K27/12F16K27/02
Inventor 陈雨民
Owner 陈雨民
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