Double barrel anti-tempering device

Abstract

The invention discloses a double-barrel anti-backfire device, belongs to the field of gas drainage equipment, and particularly relates to an anti-back fire device for a gas drainage and utilization system. The double-barrel anti-backfire device is characterized in that the inside of a shell (3) is divided into a front air channel and a rear air channel which have equal widths, a partition device is arranged in the front air channel, a flame-retardant layer (8) is arranged in the rear air channel and comprises a plurality of filter screens (9) which are axially and parallelly mounted in the front air channel via a support frame (6), the partition device comprises left and right partition plates (4) which are symmetrically mounted on the left and right sides of the fronts of the multiple filter screens (9) via two fixing frames (5), the support frame (6) is slidably mounted between the two fixing frames (5) via sliding mechanisms, and stroke assemblies (7) which can drive the filter screens (9) to slide along the inner sides of the two fixing frames (5) back and forth are arranged at the rears of the filter screens (9). The double-barrel anti-backfire device has the advantages that the flame-retardant layer is of a multilayer filter screen structure, so that the filter screens can be quickly replaced when equipment runs, the double-barrel anti-backfire device can be operated easily and conveniently, potential safety hazards of underground workers due to machine-halt replacement operation are prevented, and the purpose of replacing the filter screens in an online manner can be easily achieved.

Description

technical field [0001] The double-barreled backfire prevention device belongs to the field of gas drainage equipment, and in particular relates to a backfire prevention device for a gas drainage and utilization system. Background technique [0002] The anti-backfire device is a safety protection device installed on the suction side and exhaust end pipeline of the gas drainage pump. When an accidental explosion occurs in the gas drainage pipeline, it can prevent the shock wave generated by the explosion from damaging the drainage system, and It is a special safety device that prevents the flame generated by the explosion from continuing to conduct along the extraction pipeline and prevents the accident from further expanding. [0003] The backfire prevention device usually includes a tank or cylinder, and a filter screen is installed in the tank or cylinder as a fire arresting structure. When the gas drainage system is normally drained, the extracted gas passes through the fi...

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Problems solved by technology

[0004] However, due to the unreasonable structure of the existing anti-backfire device and the limitation of the installation method of the filter screen, the filter screen cannot be replaced in time, and the drainage system needs to stop working during the replacement. Untimely switching of the drainage equipment will easily cause personal safety accidents for underground workers. In order to avoid the delay caused by the shutdown or switching of the drainage equipment during operation, and to ensure the normal use of the gas fire arresting equipment, it is necessary Anti-backfire device for online filter replacement

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