Anti-explosion mercury limit switch
A limit switch, mercury switch technology, applied in the direction of electrical switches, electrical components, circuits, etc., can solve the problems affecting the use performance, poor explosion-proof performance of limit switches, etc., and achieve the effect of high explosion-proof performance
Active Publication Date: 2014-02-12
ZHEJIANG XURUI ELECTRONICS
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- Application Information
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is that the explosion-proof performance of the existing limit switch is poor, which directly affects its performance
Method used
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Embodiment Construction
[0037] Based on the disadvantages of poor explosion-proof performance of the existing limit switch, which directly affects its performance, the invention provides an explosion-proof mercury limit switch. The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.
[0038] The explosion-proof mercury limit switch in this embodiment includes a base 1 , a switch body 2 fixed on the base 1 with two bolts, and a switch box 3 built in the switch body 2 . The switch box 3 is fixedly connected with the mandrel 6 protruding from the switch body 2; the mercury switch is arranged on the switch box 3, and the switch wire of the mercury switch is fixed on the switch with two screws. The insulator 12 on the body 2 is electrically connected and sealed with epoxy resin; the side cover 4 is screwed to one side of the switch body 2, and the other side of the side cover is provided with an outlet hole, and the outlet unit is screwed...
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The invention discloses an anti-explosion mercury limit switch. The anti-explosion mercury limit switch comprises a switch body fixedly arranged on a base. A switch box built in the switch body is fixedly connected with a central shaft extending out of the switch body, a switch line, arranged on the switch box, of a mercury switch is electrically connected with an insulator fixedly arranged on the switch body, and the switch line and the insulator are fixedly sealed through epoxy resin, one side of a side cover is connected with one side of the switch body in a threaded mode, the other side of the side cover is provided with a line outgoing hole and connected with a line outgoing unit, an operating arm is arranged on the other side of the switch body and hinged to the switch body through a positioning bolt, a reset spring is arranged between the operating arm and the base, one end of a crank is fixedly connected with the extending end of the central shaft, the other end of the crank is inserted into a strip-shaped positioning groove which is formed in the operating arm, the switch body and the side cover are made of aluminum alloy, the side cover is connected with the switch body in a threaded mode and provided with a seal ring. Due to the adoption of the high-strength aluminum alloy outer shell and the adoption of the full sealing characteristic, the anti-explosion mercury limit switch has high explosion protection performance.
Description
technical field [0001] The invention relates to the technical field of switches, in particular to an explosion-proof mercury limit switch. Background technique [0002] In mines and chemical production units, limit switches for related equipment are widely used. For example, in mines, oil depots, chemical plants and other environments with first-class flammable and explosive gases or dust, humid and corrosive media, it can be used for limit, protection, signal and position detection of moving machinery, such as mine shafts Parking and over-rolling protection of hanging tanks, position detection and control of carts and dumpers, switch signals of coal bin door, deviation and broken belt protection of belt conveyors, etc. [0003] However, the environmental conditions of mines and chemical production units are very harsh, and traditional limit switches do not have good explosion-proof performance, which directly affects the performance of use. Contents of the invention [...
Claims
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Inventor 蔡旭强伍海燕
Owner ZHEJIANG XURUI ELECTRONICS