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Explosive-proof straight travel electric actuator

An electric actuator and straight-stroke technology, applied to engine components, valve details, valve operation/release devices, etc., can solve problems such as potential safety hazards, single operation, and damage to internal electronic components

Inactive Publication Date: 2014-12-24
ZHEJIANG JINGJIE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing electric actuators mainly include two types, one is the electric actuator without manual function, which is purely electric. The safety performance is poor; the other is an electric actuator with manual adjustment. Although this electric actuator can perform related manual adjustment operations, there is no mutual clutch mechanism or switching mechanism between manual operation and electric operation. Therefore, the manual operation will drive the motor to rotate at the same time and generate a reverse current, which will not only easily damage the internal electronic components of the electric actuator, but also pose a great safety hazard during operation.

Method used

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  • Explosive-proof straight travel electric actuator

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Embodiment Construction

[0025] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0026] like figure 1 , figure 2 and Figure 4 As shown, the flameproof linear electric actuator includes a housing 1 and a sealing sleeve 2, a screw cap 3, a manual shaft 4, a manual bevel gear 5, a valve stem 6, a clutch pawl 7, and a clutch frame all located in the housing 1. 8. Composition of safety pin 9, worm gear 10, motor 11, worm screw 12, large bevel gear 13, gear shaft 14, etc.

[0027] Specifically, the upper end of the housing 1 has a protruding annular connection end 1a, and the inner side of the connection end 1a is fixedly connected with a sealing sleeve 2 in a cylinder, and in this embodiment, the outer edge of the sealing sleeve 2 has an annular shoulder 2a and The annular shoulder 2a abuts against the...

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Abstract

The invention provides an explosive-proof straight travel electric actuator, capable of solving the problem that the traditional electric actuator cannot be switched back and forth between manual operation and electric operation. The explosive-proof straight travel electric actuator comprises a shell; a valve rod, a motor, a manual shaft, a worm, a worm wheel, a manual bevel gear, a clutch pawl and a switching handle, wherein the manual shaft is meshed with the manual bevel gear; a clutch pawl sleeve is linked with the valve rod, and the clutch pawl can be driven to rotate by the manual bevel gear; a compression spring I is arranged between the clutch pawl and the manual bevel gear; the worm wheel is linked with the valve rod and is driven by the motor; a clutch rack is arranged between the worm wheel and the clutch pawl; one end of the clutch rack is hinged with a safety pin; the switching handle is provided with a shifting block and a volute spiral spring; a back-up block is hinged in the shell; a compression spring II is arranged between the shifting block and the back-up block; the upper end of the shifting block is provided with a lobe abutting on the other end of the clutch rack and the upper end of the back-up block. The explosive-proof straight travel electric actuator has the advantages of manual semi-automatic switching operation and electric semi-automatic switching operation.

Description

technical field [0001] The invention relates to an electric actuator, in particular to an explosion-proof linear stroke electric actuator. Background technique [0002] At present, the existing electric actuators mainly include two types, one is the electric actuator with no manual function and pure electric work, this electric actuator has a single operation, no debugging in case of power failure and manual handling of emergencies, The safety performance is poor; the other is an electric actuator with manual adjustment. Although this electric actuator can perform related manual adjustment operations, there is no mutual clutch mechanism or switching mechanism between manual operation and electric operation. Therefore, the manual operation will drive the motor to rotate at the same time and generate a reverse current, which will not only easily damage the internal electronic components of the electric actuator, but also pose a great safety hazard during operation. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04
CPCF16K31/05F16K31/53
Inventor 李立芬
Owner ZHEJIANG JINGJIE IND
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