Mechanical in-place feedback device for travel switch of plugboard type air door

A travel switch, mechanical feedback technology, applied in valve devices, mechanical equipment, engine components, etc., can solve problems such as ash accumulation, shaft seal leakage, spring aging, etc., to avoid direct erosion and increase service life.

Active Publication Date: 2015-11-11
UNION ELECTRIC MACHINERY MFG JIANGSU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a mechanical feedback device for the position switch of the plug-in damper, which solves the problems of dust accumulation, spring aging and shaft seal leakage of the mechanical feedback device of the damper.

Method used

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  • Mechanical in-place feedback device for travel switch of plugboard type air door

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Embodiment Construction

[0010] The present invention will be described in detail below in combination with specific embodiments.

[0011] The inventive device such as figure 1 As shown, it includes a stroke ejector rod 10, which is installed in the ejector rod fixing seat 5, and the ejector rod fixing seat 5 is installed on the door frame 13. Between 13 and the travel switch bumper is the outer side of the damper, and the travel push rod 10 can do linear motion in the fixed seat 5. During the movement, one end of the travel push rod 10 can contact the damper shutter 14, and the other end of the travel push rod 10 is installed with a stroke The push rod bump block 9, the stroke push rod bump block 9 can contact the external travel switch bump block, the top of the push rod fixing seat 5 located on the inside of the damper is covered with the large nut 3 inside the damper, and the large nut 3 inside the damper is wrapped with the inside of the damper Graphite ring 2 and sealing ring 1 inside the dampe...

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PUM

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Abstract

The invention discloses a mechanical in-place feedback device for a travel switch of a plugboard type air door. The mechanical in-place feedback device comprises a travel push rod, the travel push rod is mounted in a push rod fixing base, the push rod fixing base is mounted on the door frame, a contact piece of the travel push rod can contact a contact piece of the travel switch at the external, the push rod fixing base is arranged at one end of the inner side of an air door, and the top of the push rod fixing base is sleeved with an air door inner side large nut, the air door inner side large nut wraps an air door inner side graphite ring and an air door inner side seal ring, the push rod fixing seat is arranged at one end of the air door outer side and connected with one end of a seal shaft pipe, the other end of the seal shaft pipe is sleeved with an air door outer side large nut, the air door outer side large nut wraps an air door outer side graphite ring and an air door outer side seal ring, one end of a push rod return spring is fixed on the seal shaft pipe, and the other end is fixed to a travel push rod. The beneficial effect of the mechanical in-place feedback device for the travel switch of the plugboard type air door is that direct corrosion on spring caused by high temperature medium in air channel can be avoided, because a push rod return spring is mounted on the outer side of an air door.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, and relates to a mechanical feedback device for a position switch of a plug-in damper. Background technique [0002] For a long time, the plug-in damper has often occurred during operation. The travel feedback device cannot accurately and effectively feedback the switch position of the damper, which leads to the inability to accurately grasp the switch position of the damper during the production process of the power plant, which has caused serious damage to the production safety of the power plant. troubled. [0003] The existing spring built-in type, the spring is prone to heat aging; there is no sealing structure inside the air duct, and the shaft tube is easy to accumulate dust and jam. The old-fashioned stroke ejector is a built-in spring, and the spring will age after being heated for a long time, resulting in a decrease in elasticity, which will cause the ejector to fail to rebound. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00
CPCF16K37/00
Inventor 肖华
Owner UNION ELECTRIC MACHINERY MFG JIANGSU
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