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Assembling method for internal parts of top-mounted fixed ball valve

A technology for fixing ball valves and assembly methods, which is applied in the direction of hand-held tools and manufacturing tools, can solve the problems of low disassembly efficiency and damage, and achieve the effects of simple and labor-saving assembly, improved reliability, and convenient assembly and disassembly

Pending Publication Date: 2022-07-26
JIANGSU SHENTONG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the risk of damage caused by tilting of the top-entry trunnion ball valve during assembly, the disassembly efficiency is low, and when the connection method is welded connection, the valve can only be repaired by cutting it off from the pipeline.

Method used

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  • Assembling method for internal parts of top-mounted fixed ball valve
  • Assembling method for internal parts of top-mounted fixed ball valve
  • Assembling method for internal parts of top-mounted fixed ball valve

Examples

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Embodiment Construction

[0017] As shown in the figure, a method for assembling the internal parts of a top-loading fixed ball valve includes the following steps: Step 1: Load the valve seat assembly 1 on both sides and the guide tooling 2 on both sides from the middle channel, install the screw 3 and the nut 4; Step 2 : Rotate the nut 4 on both sides, generate a rotational force through the thread pair between the screw 3 and the nut 4, and push the nut 4 to the guide tooling 2 on both sides to open the valve seat assembly 1 on both sides; Step 3: Take out the screw 3, The nut 4 and the guide tool 2 are loaded into the lower valve shaft 6, the spring 7, the spacer 8, the bearing 9, and the ball 10 in sequence; Step 4: Insert the pin 14 of the pre-tightening handle 5 into the pin hole 19 on the side of the pre-tightening nut 18 In the middle, after rotating the pre-tightening handle 5 to make the pre-tightening nut 18 and the valve seat 17 have a retreat distance, install the anti-loosening screw 15 in...

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Abstract

A method for assembling internal parts of a top-mounted fixed ball valve comprises the following steps that nuts on the two sides are rotated, rotating force is generated through a thread pair between a screw rod and the nuts, the nuts abut against guiding tools on the two sides, and valve seat assemblies on the two sides are jacked open; a pin shaft of the pre-tightening handle is inserted into a pin shaft hole in the side face of the pre-tightening nut, the pre-tightening handle is rotated to enable the pre-tightening nut and the valve seat to generate a retreat distance, and then the check screw is installed in a middle channel to enable the lower bottom end face of the check screw to abut against the plane on the spring seat; after the valve seats are tightly attached to the ball body, the handles are rotated towards the valve seats on the two sides at the same time to pre-compress the springs, then the anti-loosening screws are detached, the limiting screws are installed, and the lower bottom planes of the limiting screws abut against the planes of the spring seats. The sealing device has the beneficial effects of being convenient to disassemble and assemble and reliable in sealing performance.

Description

technical field [0001] The invention relates to a ball valve, in particular to a method for assembling the internal parts of a top-mounted fixed ball valve. Background technique [0002] At present, when the top-loading fixed ball valve is assembled, the pan plug is inclined, which leads to the risk of damage, and the disassembly and assembly efficiency is low. When the connection method is welded, the valve can only be repaired by cutting it from the pipeline. SUMMARY OF THE INVENTION [0003] In order to solve the deficiencies of the prior art, the present invention provides a method for assembling the internal components of a top-loading fixed ball valve. [0004] The technical scheme of the present invention is a method for assembling the internal parts of a top-loading fixed ball valve, comprising the following steps: Step 1: Load the valve seat assemblies on both sides and guide tooling on both sides from the middle channel, and install screws and nuts; Step 2: Rotat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B27/14
CPCB25B27/14
Inventor 师晓东杨海峰林凯宇许峻陈胡笑飞
Owner JIANGSU SHENTONG VALVE
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