Smog sensor device

Abstract

The invention provides a smog sensor device, which belongs to the technical field of coal mining safety facilities. The smog sensor device comprises a smoke gathering hood, a smoke sensing probe seat, 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 circuit board comprises a power module circuit, a heating time-delay and alarm output circuit used for outputting alarm voltage Vout and a smog sensor module circuit used for outputting signal voltage Vout1, the soaring housing is fixed with the smoke gathering hood, 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 device provided by the invention has the following advantages: a smoke sensing probe is allowed to sense smog in time; installation is convenient; and good reliability is obtained.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety facilities, and in particular relates to a smoke sensor device. Background technique [0002] As known in the industry, the ambient gas in coal mines inevitably contains flammable gases, which will spontaneously ignite when natural conditions meet the ignition point; in addition, coal mining machinery, coal transportation machinery, etc. will generate smoke due to heat; and, static electricity Ignition occurs; also, sparks from electrical control equipment can also cause combustion and even explosion. In conclusion, smoke sensors are usually installed in areas where fire protection is required. [0003] In the published Chinese patent literature, it can be seen that all the technical information applicable to the smoke sensor under the coal mine is typical, such as the "explosion-proof smoke sensor" recommended by the authorized announcement number CN2199567Y. "A novel smoke sensor" pro...

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 in time or by the smoke probe, thus losing valuable disposal opportunities; secondly, because the smoke probe needs to be installed with the help of fasteners, it is more troublesome ; Third, the patent scheme does not provide the technical inspiration of the interface device of the power line and the signal line. 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 not reliable, there will be a risk of separation from the internal circuit board, making the smoke detector useless. For example, if 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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