Flame-proof switch

An explosion-proof switch and transfer switch technology, applied in the field of electrical switches, can solve the problems of failure to achieve power failure, damage to the reed switch, safety accidents, etc., and achieve the effects of improving the explosion-proof performance, preventing falling off, and being easy to install.

Inactive Publication Date: 2012-09-19
JIANGSU SHINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, reed switches are usually used in explosion-proof products to achieve the purpose of opening the cover and cutting off power, but the reed switch often has problems such as damage to the reed switch during use.
At the same time, this power-off method is not safe. The device is still charged during the opening process. If the power is not cut off before opening the cover, it may easily cause safety accidents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An explosion-proof switch provided by the present invention is used to prevent the sparks generated while the switch is in use from being transmitted to the wiring cavity of the equipment to form an ignition source. 2 is provided with four terminal posts 10, the terminal posts 10 are connected with lead wires 11, the lead wires 11 extend to the outside of the housing 1, one end of the transfer switch 2 is connected with a switch connection shaft 3, and the switch connection shaft 3 is sleeved with a fixed Block 4, the fixed block 4 is fixed on the transfer switch 2 through the connecting screw 5, because the screw connection is used, the installation of the present invention is quite convenient and fast, the fixed connection between the switch connecting shaft 3 and the transfer switch 2 is through the fixed block 4 and the transfer switch 2, the switch connecting shaft 3 extends through the housing 1 to the outside of the housing 1, and an insulating baffle 6 is connect...

Embodiment 2

[0028] An explosion-proof switch provided by the present invention is used to prevent the sparks generated while the switch is in use from being transmitted to the wiring cavity of the equipment to form an ignition source. 2 is provided with four terminal posts 10, the terminal posts 10 are connected with lead wires 11, the lead wires 11 extend to the outside of the housing 1, one end of the transfer switch 2 is connected with a switch connection shaft 3, and the switch connection shaft 3 is sleeved with a fixed Block 4, the fixed block 4 is fixed on the transfer switch 2 through the connecting screw 5, because the screw connection is used, the installation of the present invention is quite convenient and fast, the fixed connection between the switch connecting shaft 3 and the transfer switch 2 is through the fixed block 4 and the transfer switch 2, the switch connecting shaft 3 extends through the housing 1 to the outside of the housing 1, and an insulating baffle 6 is connect...

Embodiment 3

[0030] An explosion-proof switch provided by the present invention is used to prevent the sparks generated while the switch is in use from being transmitted to the wiring cavity of the equipment to form an ignition source. 2 is provided with four terminal posts 10, the terminal posts 10 are connected with lead wires 11, the lead wires 11 extend to the outside of the housing 1, one end of the transfer switch 2 is connected with a switch connection shaft 3, and the switch connection shaft 3 is sleeved with a fixed Block 4, the fixed block 4 is fixed on the transfer switch 2 through the connecting screw 5, because the screw connection is used, the installation of the present invention is quite convenient and fast, the fixed connection between the switch connecting shaft 3 and the transfer switch 2 is through the fixed block 4 and the transfer switch 2, the switch connecting shaft 3 extends through the housing 1 to the outside of the housing 1, the switch connecting shaft 3 may not...

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PUM

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Abstract

The invention discloses a flame-proof switch which comprises a shell and a conversion switch, wherein the conversion switch is arranged in the shell and is provided with a wiring terminal, the wiring terminal is provided with an outgoing lead which extends outside the shell, one end of the conversion switch is provided with a switch connecting shaft, an operation device is arranged at one end of the switch connecting shaft, which is far from the conversion switch, the switch connecting shaft passes through one end of the shell, and a sealing piece is arranged at one end of the shell, which is far from the switch connecting shaft. The flame-proof switch is capable of realizing leading outage so as to cut off power before a cover is opened; moreover, sparks generated when the switch is in use are all in a switch protective shell and cannot be transferred to a wiring cavity of equipment to form an ignition source. In addition, the flame-proof switch has the advantages of simple operation, convenience in installation and reliable casting.

Description

technical field [0001] The invention relates to the technical field of electric switches, in particular to a flameproof switch. Background technique [0002] For mine explosion-proof electrical equipment, the design of the flameproof shell should be able to withstand the internal explosion without causing external explosion hazards, that is, the electrical appliances are installed in the shell, and the shell can withstand the explosion pressure generated by the explosion of the internal mixed explosive gas. It can also prevent the internal explosion flame and high temperature gas from igniting the mixed explosive gas outside the shell through the flameproof gap. It is strictly forbidden to open the cover when the explosion-proof product is used in the underground of the coal mine. When the flame-proof product needs to be opened for maintenance and the pre-stage power supply cannot be cut off, it is necessary to design an isolation power-off switch so that the pre-stage power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/04H01H3/32
Inventor 陶德保娄华平袁少博李大林戴兴红耿浩
Owner JIANGSU SHINE TECH
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