A photoelectric switch explosion-proof housing

Abstract

The invention discloses an explosion-proof shell body of a photoelectric switch. The explosion-proof shell body comprises a supporting seat and an explosion-proof assembly, wherein a light-transmitting hole and a mounting hole, which are communicated with each other, are coaxially formed in the supporting seat; the mounting hole is internally provided with a transparent part for light transmissionof the photoelectric switch; the explosion-proof assembly comprises a transparent part pressing sleeve, a main shell body and a cable introduction device, which are arranged in sequence from front toback; the transparent part pressing sleeve is in thread connection into the mounting hole; a front end of the transparent part pressing sleeve is used for abutting a transparent part on a rear end face of the light-transmitting hole; the photoelectric switch is mounted in the transparent part pressing sleeve; the front end of the main shell body is detachably connected into the mounting hole; a rear end of the main shell bod is detachably connected with the front end of the cable introduction device; the cable introduction device is used for introducing and fixing a cable connected with the photoelectric switch. The explosion-proof shell body of the photoelectric switch is simple and compact in structure and can meet protection of the photoelectric switch under a limited space; the explosion-proof shell body is convenient to dismount and mount, and has a high explosion-proof grade and extremely strong practicability.

Description

technical field [0001] The invention relates to an explosion-proof protection device for a photoelectric switch, in particular to an explosion-proof housing for a photoelectric switch. Background technique [0002] The photoelectric switch is the abbreviation of the photoelectric proximity switch. It uses the occlusion or reflection of the light beam by the detected object, and the circuit is strobed by the synchronous loop to detect the presence or absence of the object. Since the detection object is not limited to metal, all objects that can reflect light can be detected. Photoelectric switches have been used for position detection, liquid level control, product counting, width discrimination, speed detection, fixed-length cutting, hole recognition, signal delay Time, automatic door sensing, color mark detection, punching and shearing machines, and safety protection and many other fields. [0003] There are various types of photoelectric switches, among which cylindrical,...

AI Technical Summary

Problems solved by technology

In some specific environments, the existing photoelectric switches are easily damaged by external forces due to the limited space, and cannot meet the requirements for use in explosion-proof equipment or environments. Therefore, in mining machinery, In the chemical industry and other explosion-proof places, it is necessary to protect the photoelectric switch when it is used

However, the existing photoelectric switch explosion-proof devices are not only complex and bulky in structure, inconvenient to disassemble, but also have strict requirements on the use environment and poor universal applicability

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