Design of alarm and control device for explosion-proof dust collector

Explosion-proof dust collector is a kind of bag dust collector. For the working conditions of flammable and explosive dust such as aluminum, magnesium, starch, coal powder, etc., it adopts anti-static, anti-high temperature, anti-high pressure difference and other measures to prevent the occurrence of explosions, explosion vents, explosion-proof valves and other measures to reduce explosion hazards to achieve the purpose of explosion prevention.

In terms of the design of alarm and control devices for dust collectors, let’s take a look at the introductions of professional manufacturers.

1. The air inlet of the explosion-proof dust collector is equipped with an explosion-proof valve and a temperature monitoring and alarm device. When the temperature is greater than 70°C, the explosion-proof valve is closed and the temperature monitoring and alarm device emits an audible and visual alarm;

2. The air inlet and outlet of the explosion-proof dust collector are equipped with a pressure difference monitoring alarm. When the change in gas pressure at the inlet and outlet is greater than 20% of the allowable value, the detection device will send out an audible and visual alarm signal;

3. The explosion-proof dust collector is equipped with a cleaning pressure monitoring and alarm device. When the cleaning pressure is lower than the set value, it will send out an audible and visual alarm signal;

4. Set up a monitoring device for abnormal operation and shutdown of the ash unloading device, and send out audible and visual alarm signals when abnormal operation or shutdown occur;

5. The dust removal system is equipped with a control device that meets the following requirements:

1) Startup and shutdown: The dust removal system should be started before the production and processing system. When the production and processing system is shut down, the dust removal system will be shut down with a delay of at least 10 minutes;

2) Protection interlocking: The dust removal system is equipped with a protection interlocking device. When the monitoring device sends out an audible and visual alarm signal, and the explosion-proof and explosion-suppressing device is activated, the protection interlocking device starts control protection at the same time;

6. The detection and alarm device of the dust removal system should be installed in a position that is easy to observe.