Coal bunker gate plate door
1、 Product Overview
The MZB type coal bunker gate (coal mill insert gate, coal mill isolation gate, coal mill hot air gate) is designed and manufactured by Lianyungang Huaneng Power based on advanced technology and the actual operation of the coal powder silo. It is suitable for installation in the coal powder silo, coal mill, and raw coal silo of power plant boilers. According to the working condition of the coal mill, turn on and off the raw coal to improve the previously heavy work of turning off and starting the raw coal. The equipment is divided into single gate coal bunker doors and double gate coal bunker doors, which can be manually controlled on site or remotely controlled by DCS system. The operation is safe, flexible, and reliable, greatly reducing the labor intensity of the staff and minimizing the preparation time before shutdown. It is the preferred product for boiler technology renovation and equipment upgrading in thermal power plants.
2、 Structure Introduction
The MZB coal bunker gate is mainly composed of a feed inlet, a discharge outlet, a body bracket, a transmission mechanism, a door panel, an actuator, and a control box. There are two forms of gates: single gate and double gate. The double gate consists of two gate blocks, which are driven by a transmission mechanism during operation. The two gate blocks move horizontally relative to each other to complete the opening and closing actions. It can also be used on the powder feeding pipeline from the outlet of the coal mill to the inlet of the burner, and on the ash dropping pipeline and lower part of the chimney ash hopper in the dust collector pneumatic ash removal system to cut off the flow of gas powder mixture.
The body bracket is the basic structure for installing all components and also serves as a passage for raw coal. The feeding port is connected to the coal hopper by a flange, and raw coal enters vertically from the upper part of the feeding port. Through the opening of the gate, it falls out from the lower part of the discharging port and enters the next equipment. The electric actuator and transmission mechanism are key components of the entire equipment.
Huaneng power auxiliary equipment adopts reliable quality and excellent performance supporting components, making the entire equipment flexible and convenient to operate, and safe and reliable to operate. The specific performance characteristics are as follows:
1. According to the diameter size, choose the form of single door gate or double door gate, and the driving method can be electric pneumatic or manual.
2. The transmission mode of the gate plate includes gear pair transmission or screw transmission, with flexible opening and closing.
3. The double door gate coal gate adopts dual drive, and the actuator is arranged on the left and right sides of the door frame.
4. The door gate is designed with a sliding structure of guide wheels for smooth movement without jamming.
5. Equipped with a maintenance door structure for easy maintenance and upkeep.
6. The door gate is made of wear-resistant material and has over torque protection.
3、 Technical parameters
1. Product model:
Electric (manual) coal gate MZB (SMZ) - W * H * L
2. Applicable media: raw coal and coal powder
3. Working temperature: ≤ 400 ℃
4. Design pressure: 0.35MPa
5. Power supply: AC three-phase; 380V/50HZ (or user specified)
*Single gate coal bunker door
*Double gate coal bunker door
4、 Scope of Supply
The scope of supply includes the gate body, counter flange, actuator, and control box of the coal bunker gate plate.
5、Ordering Notice
1. Provide the diameter size of the coal drop pipeline.
2. Drive mode: electric, pneumatic or manual
3. Connection method: flange bolt connection or flange flat butt welding connection.
Before placing an order, the supplier will provide the outline drawing of the coal gate to the purchaser for confirmation as needed.
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