The electrical control of the DZB explosion-proof electric actuator for mining is designed according to the "95" Standard Design for Valve Electric Devices issued by the General Design and Planning Institute of the Ministry of Power. Its features include the ability to adapt to the improvement of power station automation levels and meet the needs of computer control. Therefore, up to four micro-switches for opening and closing can be added to the stroke control mechanism (midway switches can be added to the opening degree indicator upon ordering). It also features a 51-core terminal block.
Protection Class ExDII BT4, suitable for operating gate valves, stop valves, and other valves; IP65 protection class. Output torque range: 50-10,000 Nm; output speed range: 12-36 rpm. It is a driving device for valves to achieve opening, closing, or regulating control. The DZB mining explosion-proof electric actuator is applicable to gate valves, stop valves, diaphragm valves, plunger valves, throttle valves, sluice gates, etc. It can be used for both exposed stem valves and concealed stem valves.
Broadly used for pipelines handling explosive gases or in coal mine underground extraction areas, featuring stable quality and excellent explosion-proof performance. Our company is now capable of producing explosion-proof voltage models of three-phase 660V, 380V, and two-phase 220V. The product's appearance and quality have consistently received positive feedback from users!
In addition to standard switch types, the product also offers integrated explosion-proof options, with intelligent integrated explosion-proof models catering to more specific practical requirements.
The DZB explosion-proof electric actuator features a reliable design, suitable for the needs of different control coefficients and various working environments.
The DZB mine explosion-proof electric actuator features comprehensive functions, reliable performance, control system, compact size, light weight, and convenient operation and maintenance. It can implement remote control, centralized control, and automatic control of valves. Widely used in industries such as power, metallurgy, petrochemicals, papermaking, and wastewater treatment.
The performance of the DZB explosion-proof electric actuators for mining meets the requirements of JB/T8528-1997 "Technical Conditions for Electric Actuators of General Valves." The explosion-proof performance conforms to GB3836.1-2000 "Part 1: General Requirements for Electrical Equipment Used in Explosive Gas Atmospheres," GB3836.2-2000 "Part 2: Explosion-proof Type 'd' for Electrical Equipment Used in Explosive Gas Atmospheres," and JB/T8529-1997 "Technical Conditions for Explosion-proof Electric Actuators of Valves."
Multiple rotation electric motor units, categorized by protection type: standard type, outdoor type, and explosion-proof type.
By control type: conventional, integrated, and intelligent integrated types
By connection type: torque type, power station type, and thrust type.
Work Environment and Main Technical Parameters
1. Power Supply: Motor is 3-phase AC, 380V (order 660V or 220V), 50Hz (order 60Hz); control wire is 220V, 50Hz (order 60Hz); remote control is 24VDC.
2 Work Environment:
2.1 Environmental Temperature: -20~+60℃ (Ordering: -40~+80℃)
2.2 Relative Humidity: ≤90% (at 25℃).
2.3 Protection Types: Standard and Outdoor types are used in areas without flammable, explosive, or corrosive media, with the Standard type for indoor use; Explosion-proof products include dⅠ and dⅡBT4, with dⅠ suitable for non-mining areas in coal mines; dⅡBT4 is used in factories and suitable for environments with explosive gases of IIA, IIB groups T1~T4. 2.4 Protection Grades: Outdoor and explosion-proof types are IP55 (orderable IP67).
3-Day Work System: Short cycle 10 minutes (order within 30 minutes).



The operation characteristics and utilization rates of the valve electric actuator depend on the type of valve, the operational specifications of the device, and the position of the valve on the pipeline or equipment.
An electric device typically consists of the following components:
Electric motor, featuring strong overload capacity, high starting torque, and low rotational inertia, suitable for short-term and intermittent operation. Reduction gear unit, used to reduce the output speed of the motor.
Actuator for controlling the travel, used to regulate and accurately control the opening and closing position of valves.
Torque limiter mechanism, used to adjust torque (or thrust) and ensure it does not exceed the predetermined value.
Manual/electric switching mechanism, for interlocked operations between manual and electric operation.
Openness indicator, used to display the position of the valve during the opening and closing process.
Torque operation
Torque output is a key parameter in selecting valve electric actuators; the electric actuator's torque output should be 1.2 to 1.5 times the valve's operating torque.
Bushing diameter
For multi-turn lift stem valves, if the electric actuator's allowable large stem diameter cannot pass through the stem of the valve it is paired with, it cannot be assembled into an electric valve. Therefore, the inner diameter of the hollow output shaft of the valve's electric actuator must be larger than the outer diameter of the lift stem valve's stem. For some types of quarter-turn valves and for the blind stem valves within multi-turn valves, although the stem diameter passage issue does not need to be considered, it is still important to carefully consider the stem diameter and keyway size during selection to ensure proper operation after assembly.
Output Speed
If the valve's opening and closing speed is too fast, water hammer phenomena may occur. Therefore, the appropriate opening and closing speed should be selected based on different operating conditions.
Operation Thrust
The main structure of the electric valve actuator has two types: one without a thrust plate, which directly outputs torque; the other with a thrust plate, where the output torque is converted into thrust through the valve stem nut in the thrust plate.
Output shaft revolution count
The number of rotations of the output shaft of the electric valve actuator is related to the nominal diameter of the valve, the screw pitch of the valve stem, and the number of threads. It should be calculated according to the formula M = H/ZS (where M is the total number of rotations the electric actuator should meet, H is the valve opening height, S is the pitch of the valve stem transmission thread, and Z is the number of threads on the valve stem).
The Multi-Turn Valve Electric Actuator, abbreviated as Z-type Actuator, is the driving equipment that enables valves to open, close, or regulate control. The Z-type Actuator is suitable for gate valves, stop valves, diaphragm valves, plunger valves, throttle valves, sluice gates, and more. It can be used with both exposed stem valves and blind stem valves.
This series of electrical installations boasts full functions, reliable performance, a control system, compact size, lightweight, and easy operation and maintenance. It can implement remote, centralized, and automatic control of valves. It is widely used in industries such as power, metallurgy, petroleum, chemical, papermaking, and wastewater treatment.
This product's performance meets the requirements of JB/T8528-1997 "Technical Conditions for Electric Actuators for General Valves," explosion-proof models comply with GB3836.1-2000 "Electrical Equipment for Explosive Gas Atmospheres – Part 1: General Requirements," GB3836.2-2000 "Electrical Equipment for Explosive Gas Atmospheres – Part 2: Explosion-Proof 'd' Type," and JB/T8529-1997 "Technical Conditions for Explosion-Proof Electric Actuators for Valves."
Multi-revolution electric units, categorized by protection type, include outdoor and explosion-proof models.
By control method: conventional type, integral type, and integral adjustment type.
By connection type: Torque type, Power station type, and Thrust type.
Model Representation Method