Quantitative coal feeder
Quantitative coal feeder
Product Brief:

HF pressure type weighing coal feeder is based on electronic belt weigher and combined with the special needs of positive pressure coal feeding, metering and control process of circulating fluidized bed boiler. It is a strictly sealed pressure coal feeding equipment with multiple functions of conveying, measuring, controlling and pressure resisting. It is suitable for the positive pressure direct blowing feed system with turbulent flow field in the furnace and the requirements of fast bed positive pressure fluidized bed boiler. It has simple structure, convenient maintenance and can realize continuous, uniform and reliable coal feeding. In the whole operation process, not only the material can be weighed, but also the instantaneous value of coal feeding amount and cumulative measurement can be displayed. Moreover, it can automatically adjust the coal feeding rate according to the instruction of the boiler combustion control system and control the coal feeding rate to meet the requirements of the boiler load. It can effectively improve the fluidization of boiler materials, adjust the load quickly, adjust the proportion of solid materials easily, control the boiler bed temperature more conveniently, make the fuel and desulfurizer mix more fully, and facilitate the full desulfurization. Continuous coal feeding, accurate weighing, stable operation and energy saving. It can also realize open-loop and closed-loop flow control and plant area network management according to user requirements.


Environmental protection and no pollution

Environmental protection, no pollution, tailings discharge to meet the requirements of environmental protection

It is simple, reasonable and easy to operate

The whole process is simple, reasonable and easy to operate

High cost inefficiency

High cost inefficiency

High yield and short time

High yield and short reaction time

working principle

1. Product technical parameters

(1) belt width: 400 ~ 1000mm

(2) conveying capacity: 1 ~ 250t / h

(3) Transportation distance: standard distance 3 ~ 9m, small distance 1m, large distance unlimited, according to user requirements.

(4) Scale frame structure: according to the different conveying capacity, conveying distance and belt width, electronic scales of 17a, 17b, 20a and 20b are equipped respectively. The scale frame size, the number and spacing of weighing idler and the length of weighing area should be well configured.

(5) Measurement accuracy: + 0.5

(6) Control accuracy: 1%

(7) Shell pressure: 0.35Mpa feed 2 

(8) speed range: 0 ~ 0.2m/s (variable frequency stepless speed regulation) 

(9) temperature control: < 120c

(10) High temperature resistance of belt: 120c ~ 180C (optional) tension

(11) State, alarm and other signals: passive, switching signal

(12) Current output: 4 -- 20mA current signal seal

(13) Communication interface: RS232 or rs485c2, coal quality (or material) parameters

Density: 0.8 ~ 1t / m3 (density of other bulk materials: 0.2 ~ 10t / m3)

Particle size: ≤ 20m water content: < 30%

3. Driving power: main driving power: determined by conveying capacity

4. Power supply voltage: 380V, 50Hz; 220V, 50h

technical parameter



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    Yantou village, Chengguan Street, Linqu County
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Shandong Huafei Heavy Industry Technology Co., Ltd.
Mobile phone: 135-6261-2288 (Manager Zeng)
National Free Hotline:400-0536-599
Address: Middle section of Chuangxin Road, Linqu County, Shandong Province
Technical Support:weifang dianjing

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