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Explosion-proof shell body of photoelectric switch

A technology for photoelectric switches and explosion-proof housings, applied in electrical switches, electronic switches, circuits, etc., can solve the problems of photoelectric switches being easily damaged by external forces, strict operating environment requirements, complex and bulky structure, etc., to save a lot of space, use Low environmental requirements, simple and compact structure

Active Publication Date: 2018-11-27
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Explosion-proof shell body of photoelectric switch
  • Explosion-proof shell body of photoelectric switch
  • Explosion-proof shell body of photoelectric switch

Examples

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Embodiment 1

[0035] Such as Figure 1-7 As shown, this embodiment provides a photoelectric switch explosion-proof housing, including a support base 1 and an explosion-proof assembly. A light-transmitting hole 1-1 and a mounting hole 1-2 are provided coaxially in the support base 1. The light-transmitting hole 1- The aperture of 1 is smaller than the aperture of the mounting hole 1-2, and the light transmission hole 1-1 is connected with the mounting hole 1-2, and the front end of the mounting hole 1-2 is equipped with a transparent member 7 for light transmission of the photoelectric switch, and the mounting hole 1-2 The inner wall of the rear end of 2 is provided with a first internal thread 2-1; the explosion-proof assembly includes a transparent piece pressing sleeve 2, a main shell 3 and a cable lead-in device arranged in sequence, and the transparent piece pressing sleeve 2 is installed on the installation In the hole 1-2, the outer wall of the rear end of the transparent part pressin...

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PUM

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/02H03K17/94
CPCH01H9/02H03K17/941H03K2217/941
Inventor 张祝新刘谦赵丁选
Owner YANSHAN UNIV
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