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Shaft feedback device of electro-pneumatic valve positioner

A valve positioner and feedback device technology, applied to valve devices, engine components, mechanical equipment, etc., can solve the problems of cumbersome operation and inability to adjust the transmission ratio of the positioner shaft and the rotary actuator shaft

Inactive Publication Date: 2013-10-23
CHANGSHU HUAXIA INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing fixed connection between the upper feedback rod and the lower feedback rod of the shaft feedback device between the positioner shaft of the coaxially arranged valve positioner and the shaft of the rotary actuator makes it impossible to adjust the shaft of the positioner and the shaft of the rotary actuator The transmission ratio between, when it is necessary to meet the positioner shaft and the rotary actuator shaft with different transmission ratios, it is necessary to replace the upper feedback lever and the lower feedback lever, which is cumbersome to operate

Method used

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  • Shaft feedback device of electro-pneumatic valve positioner
  • Shaft feedback device of electro-pneumatic valve positioner

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Embodiment Construction

[0010] The preferred specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0011] like figure 1 , 2 As shown, the shaft feedback device of the electric valve positioner is connected between the positioner shaft 1 of the coaxial valve positioner and the shaft 2 of the rotary actuator, and it includes an upper feedback rod 31 and a lower feedback rod 31 arranged in parallel. Rod 32, the upper feedback rod 31 is connected with the positioner shaft 1, the lower feedback rod 32 is connected with the actuator shaft 2, the upper feedback rod 31 and / or the lower The feedback rod 32 is provided with an arc-shaped connection hole 34 for adjusting transmission efficiency, and a bolt 33 is pierced in the arc-shaped connection hole 34 to connect the upper feedback rod 31 and the lower feedback rod 32, so that the positioner shaft 1 Connected to actuator shaft 2.

[0012] The above-mentioned embodiments are only to illustra...

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Abstract

The invention relates to a shaft feedback device of an electro-pneumatic valve positioner. The shaft feedback device is connected between a positioner shaft and a slewing actuating mechanism shaft which are coaxially arranged of the valve positioner. The shaft feedback device comprises an upper feedback rod and a lower feedback rod which are arranged in parallel. The upper feedback rod is connected with the positioner shaft. The lower feedback rod is connected with the actuating mechanism shaft. The upper feedback rod and the lower feedback rod are connected through a bolt. Since the upper feedback rod and the lower feedback rod of the shaft feedback device are connected through a connecting hole and the bolt, the upper feedback rod and the lower feedback rod are enabled to have certain rotating allowance during rotation and the transmission ratio can be adjusted according to the needs.

Description

technical field [0001] The invention relates to the field of electric valve positioners, in particular to an axis feedback device of the electric valve positioner. Background technique [0002] The existing fixed connection between the upper feedback rod and the lower feedback rod of the shaft feedback device between the positioner shaft of the coaxially arranged valve positioner and the shaft of the rotary actuator makes it impossible to adjust the shaft of the positioner and the shaft of the rotary actuator The transmission ratio between, when it is necessary to meet the positioner shaft and the rotary actuator shaft with different transmission ratios, it is necessary to replace the upper feedback lever and the lower feedback lever, and the operation is cumbersome. Contents of the invention [0003] The object of the present invention is to provide a shaft feedback device of an electric valve positioner which is easy to operate. [0004] In order to achieve the above pu...

Claims

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Application Information

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IPC IPC(8): F16K37/00
Inventor 马乐成
Owner CHANGSHU HUAXIA INSTR
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