What are the protections of belt conveyors for coal mines?

The mining belt conveyor protection device is designed by using dual bus control mode, and the network communication technology is used to design the ground to monitor and control the operation and fault status of the belt conveyor in the coal mine. The advancedness, reliability, ease of operation, and energy-saving lamps of the belt conveyor have been greatly improved compared with the comprehensive protection of similar belt conveyors.

The characteristics of the mining belt conveyor protection device are suitable for the comprehensive protection and control of the belt conveyor in the mine with ** gas and coal dust, and it is used to carry out comprehensive protection and control of the belt conveyorALI11. It can also be used for centralized control and protection of chain machines.

The power supply actuator is flameproof and intrinsically safe, with a rectangular shape and a 36V (127V) power supply introduction and relay control contact outlet at the left end; The right end is the outlet of the over-temperature automatic sprinkler control point; The upper right is the 12V 1A intrinsically safe power supply and control signal outlet.

The main engine of the belt conveyor protection device is composed of an explosion-proof cavity and an intrinsically safe shell, and there are intrinsically safe actuator power supply, intrinsically safe control unit, display operation unit and various intrinsically safe sensors inside China Coal.

Mining belt conveyor protection device various protection functions:

1. Tear belt protection: When the conveyor belt is torn, the tear belt sensor transmits the electrical signal to the host, and the host immediately realizes the parking protection function.

2. Deviation protection: When the guide rod of the deviation sensor deviates from the center line by 15° 5°, the deviation fault protection is realized after a delay of 10s and 5s.

3. Smoke protection: When smoke is generated, the smoke sensor sends this signal to the host to realize smoke protection immediately.

4. Emergency parking protection along the line: When an emergency stop switch along the line is turned on, this product immediately realizes the parking protection function.

5. Speed protection: When the belt conveyor is running, the driven drum does not rotate safely, and when it continues for more than 5-10s, the low-speed fault alarm signal is delayed for about 2s 1s.

6. Temperature protection: When the temperature of the monitoring point exceeds the set temperature of the temperature sensor (80), the product immediately realizes temperature fault protection.

7. Coal pile protection: when the guide rod of the coal level sensor deviates from the center line by 45° 5°, the delay is 13 seconds to realize the fault protection stop.

According to the coal mine safety regulations, the six commonly used protections of our coal mine belt conveyor are: temperature protection, smoke protection, (over-temperature) automatic sprinkler device (protection), anti-skid protection, coal pile protection, and anti-deviation device (protection).

Motor leakage protection, overload and overcurrent protection! Belt deviation protection, ultra-high load protection! Motor Temperature Protection!

There are mainly anti-deviation protection, speed limit protection, smoke protection, temperature protection, coal pile protection, belt breakage protection, etc.

Summary. Installation of integrated protector for belt conveyor for coal mine:

1. The wiring is composed of two parts: the indirect wire between the host and the starter and the wiring between the host and the sensor.

2. The speed, temperature, coal level and smoke sensors of the comprehensive protection of the belt conveyor are active sensors, and they are provided with DC 12V power supply by the host, and their wiring is the same, that is, the "+" in the sensor is connected to the +12V end of the host terminal board, and the "-" of the sensor is connected to the ground end of the host. The output of the sensor is uniformly represented by a "k".

How to wire the comprehensive protection of coal mine belts.

Installation of integrated protector for belt conveyor for coal mine:

1. The wiring is composed of two parts: the indirect wire between the host and the starter and the wiring between the host and the sensor.

2. The speed, temperature, coal level and smoke transmission of the belt conveyor comprehensive protection are pure celery sensors and are all active sensors, which are provided with DC 12V power supply by the host, and the wiring is the same, that is, the "+" in the sensor is connected to the +12V end of the host wiring board, and the "-" of the trouser sensor is connected to the ground end of the host. The output of the sensor is uniformly represented by a "k".