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Automatic electric unblocking valve

An electric valve, automatic technology, applied in the direction of valve details, valve devices, engine components, etc., can solve the problem that the valve is not automatically unblocked

Inactive Publication Date: 2013-05-22
BEIJING SHUOREN TIMES TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the case of valve blockage, the valves in the prior art do not have corresponding measures for automatic blockage removal
When this happens, the only solution is to send someone to the site where the valve is located and manually remove the blockage

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0016] The electric valve according to the present invention can realize automatic blocking removal. Such as figure 1 As shown, the electric valve 1 for automatic blockage removal according to the first embodiment of the present invention includes: a valve body 2 ; and an electric actuator 3 . The electric actuator 3 includes: a DC motor 10, which provides driving force for the valve body 2; as a return spring 20 of the automatic valve opening device, only when the external power supply of the electric valve is not enough to provide power for the DC motor to ensure When the DC motor is working normally, the valve body 2 is made to perform the valve opening action; and the PTC self-recovery fuse 30, the PTC self-recovery fuse is connected in series after the input end of the external power supply of the electric valve and before the electric actuator, When the DC motor is working normally, the PTC self-recovery fuse is in a low-resistance state. When the DC motor is locked, th...

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Abstract

An automatic electric unblocking valve comprises a valve body and an electric executing mechanism. The electric executing mechanism comprises a direct-current motor, an automatic valve switching-on device and a PTC (positive temperature coefficient) resettable fuse. The automatic valve switching-on device can enable the valve body to act in the switching-on direction of an electric valve when an external power source of the electric valve is not enough to supply power for the direct-current motor. The PTC resettable fuse is serially connected behind an input end of the external power source of the electric valve and in front of the electric executing mechanism, is in low-resistance state when the direct-current motor normally works, and is in high-resistance state when the direct-current motor is blocked. The automatic valve switching-on device is started so as to enable the electric valve to execute valve switching-on operation, and then the PTC resettable fuse resets to the low-resistance state after resetting time. Accordingly, the external power source is conducted, the electric valve keeps executing valve switching-off operation and automatically repeats once or more times of valve switching on and off operations, and finally blockage objects are automatically removed.

Description

technical field [0001] The invention relates to an electric valve for automatic blocking removal, in particular to an electric valve for automatic blocking removal driven by a DC motor. Background technique [0002] In many applications of electric valves, such as residential heating and air conditioning systems, there are often some debris in the pipeline, such as sand, stones, rust, etc. During the closing process of the electric valve, it is often stuck and unable to close due to the existence of these sundries. [0003] In the case of valve blockage, the valves in the prior art do not have corresponding measures for automatic blockage removal. When this happens, the only solution is to send someone to the site where the valve is located and manually remove the blockage. [0004] PTC resettable fuse is the abbreviation of positive temperature coefficient resettable fuse. In the prior art, the PTC resettable fuse is a kind of resettable fuse, which is used as an overcur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04
Inventor 邓宇春
Owner BEIJING SHUOREN TIMES TECH
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