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E-mail
DS13564775333@163.com
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Phone
13564775333
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Address
1908 Liuxiang Road, Malu Town, Jiading District, Shanghai
Shanghai Huquan Valve Group Co., Ltd
Application scenarios and selection guide for mining electric gate valves
Date: 2025-12-23Read: 24
Mining electric gate valveIt is an automated valve designed specifically for mining environments, which uses an electric actuator to drive the gate to achieve medium connection and disconnection. It has explosion-proof and wear-resistant characteristics and is suitable for harsh working conditions such as underground coal mines. It must comply with coal safety certification standards.
Technical parameters and working principle
The core parameters of mining electric gate valves include:
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Nominal diameter
：DN50~DN1200， Commonly used DN20~DN300;
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Work pressure
：0.6~16.0MPa， Conventional selection: PN2.5~4.0MPa;
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Temperature range
Soft seal (PTFE) is suitable for -40 ℃~180 ℃, and hard seal (stainless steel/alloy steel) can reach -40 ℃~600 ℃;
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Sealing grade
Soft seal achieves zero leakage (≤ VI level), hard seal ≤ IV level;
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Power supply voltage
AC220V/380V (conventional), explosion-proof scenarios can choose DC24V or AC660V.
Its working principle is that after receiving an electrical signal, the electric actuator drives the valve stem to move the gate in the vertical fluid direction, achieving opening or closing, and cannot be used for throttling regulation. Emphasis on mining modelsExplosion proof design(such as Ex d IIB T4 protection level) andQuick disassembly and maintenanceTo adapt to underground dust and humid environments.
Application Scenarios and Selection Guidelines
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Typical application scenarios
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Underground coal mine: used for automatic control of water pump room, integrated with DCS system to achieve remote on/off management;
Chemical/Metallurgical: Processing media containing particles (such as mineral sand and slag) requires hard sealing to prevent wear and tear;
Environmental protection/sewage treatment: Suitable for materials such as fibers and pulp that are prone to clogging, using a blade shaped gate to cut off impurities.
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Key factors for selection
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Functional requirements
Only on/off switch type actuators; Flow regulation requires adjustment type (with 4-20mA signal);
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Material selection
Stainless steel valve body and fluororubber seal for corrosive environments; Select chromium molybdenum steel and metal hard seal for high-pressure and high-temperature scenarios;
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Security certification: Must be equipped withCoal Safety Certificate (MA)
Obtain explosion-proof certificates to ensure compliance in underground use;
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Installation and maintenance
Reserve space for actuator maintenance and regularly inspect the wear of the sealing surface and the condition of the motor.