Smog sensor

Abstract

The invention provides a smog sensor, which belongs to the technical field of coal mining safety facilities. The smog sensor comprises a smoke gathering hood, a smoke sensing probe seat, a smoke sensing probe, a circuit board, a soaring housing with a soaring cavity and a power supply and signal line interface unit, wherein a smoke sensing probe seat matching chamber is formed in the central part of the smoke gathering hood, a smoke gathering drum extends out from one side of the smoke gathering hood, the sidewall of the smoke gathering drum is provided with a set of lateral smoke inlet holes, the bottom of the smoke gathering drum is provided with a set of vertical smoke inlet holes, the smoke sensing probe seat cooperates with the smoke sensing probe seat matching chamber, a smoke sensing probe matching hole is provided at the center of the smoke sensing probe seat and is communicated with the smoke gathering drum, the smoke sensing probe is accommodated in the smoke sensing probe matching hole and is connected with the circuit board, the soaring housing is fixed with the smoke gathering hood and shields the smoke sensing probe seat, the smoke sensing probe and the circuit board, a suspension hook is fixed on a top wall of the soaring housing and the power supply and signal line interface unit is arranged on the top wall of the soaring housing. The smog sensor provided by the invention has the following advantages: the smoke sensing probe is allowed to sense smog in time; and installation of the smog sensor is convenient.

Description

Technical field [0001] The invention is a technology field in coal mine safety facilities, which involves a smoke sensor. Background technique [0002] As the industry knows, the environmental gases under the coal mine can inevitably contain flammable gases, and spontaneous combustion will occur when encountering natural conditions to meet the fire point; also, coal mining machinery, coal transport machinery, etc. will produce smoke due to heat; and static electricity, static electricityCreating the phenomenon; also, the sparks of electrical control equipment can also cause burning or even explosion.In short, a smoke sensor is usually installed in areas that need fire prevention. [0003] In the open Chinese patent literature, the technical information of the smoke sensor suitable for the coal mine can be seen. The typical "explosion -proof smoke sensor" recommended by the authorized announcement number CN2199567Y.CN202362290U provided "a new type of smoke sensor" to make up.Howe...

AI Technical Summary

Problems solved by technology

However, the technical solution provided by CN202362290U has the following disadvantages: First, because the smoke can only enter from the bottom opening of the smoke collection hood (the patent is called a protective cover) and cannot enter from the side at the same time, there is a direction for the smoke to enter the smoke collection hood Especially when smoke is produced on the side of the smoke hood, it cannot be detected by the smoke detector in time, thus losing valuable disposal opportunities; secondly, because the smoke detector needs to be installed with the aid of fasteners, It is relatively troublesome; thirdly, the patent scheme does not give the technical inspiration of the interface device of the power line and the signal line, but in the actual use process, the sealing of the interface device and the positioning effect of the power line and the signal line will be different. To a large extent, it will have a corresponding impact on the smoke sensor. For example, if the positioning of the power line and signal line is unreliable, there will be a risk of separation from the internal circuit board, making the smoke sensor useless and ineffective. For example, if the ideal sealing effect cannot be exerted, then the external dust will invade the internal circuit board and affect the reliability of its work.

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