Small Scale Cast Iron Fire Bars Driven Bar Of Boiler Accessory Customized Size

Small Scale Cast Iron Fire Bars Driven Bar Of Boiler Accessory Customized Size

Passive grate bar,driven bars

Also known as the secondary film, the driven piece, and the active grate piece.

1. Type

There are four kinds of grate plates that are light (for light chain belt), large plate type, active core type and scale type. The new product geometry is basically the same as the original grate piece or according to the size provided by the user.

2. Material:Cast iron, malleable cast iron

3. Use

(1) It is a function of preventing the wind between the segmented air supply chambers and improving the air supply in the wind chamber.

(2) It is to prevent air leakage before and after the grate, reduce the air leakage of the furnace, and reduce the power consumption of the fan.

Passive grate bar

1. Theoretical weight 0.65KGS, 0.8KGS

2. Passive grate model, 330mm, 310mm, etc.

3. The primary task of energy saving and emission reduction is to have a great relationship between the adjustment of energy distribution and the burning of the furnace. For the control of the amount of coal in the passive grate, it should be the basis of the next two layers of coal. The excess air ratio of large and upper coal is reduced from 2.9 to 2.1, and the boiler not only heats up quickly, but also the carbon content of the slag can be reduced to less than 12%.

4. Ensure the heating surface of the boiler is clean, prevent the water cooling wall of the boiler of the passive grate boiler, the convection tube bundle, the economizer, the air preheater and other heated area ash and boiler scaling is a major factor affecting the heat transfer of the boiler. According to the relevant tests, the thermal resistance of scale is 40 times that of steel plate, and the thermal resistance of gray scale is 400 times that of steel plate. Therefore, it is necessary to establish and build a complete boiler water quality management and regular ash removal system to ensure the water quality of boiler water and boiler heating. Surface cleaning to improve passive grate boiler efficiency and equipment life.

High silicon cast iron grate

Product Name: Passive grate

Product specifications: 18mm 24mm, etc.

Product material: High silicon cast iron Si5

Product weight: 0.65kg 0.8kg

A cooling insert is installed on the bottom surface of the grate sheet, so that the cooling effect of the primary air is good, and the grate is hardly burned. The grate piece material is excellent heat-resistant alloy steel, the grate structure and movement mode are simple, it is not easy to jam, the failure rate is low, and a lot of maintenance and maintenance costs are saved.

The grate piece is replaced from the 4th year, and the annual replacement rate is 2% or less. The modular structure of the furnace section facilitates road transportation and on-site installation, and can be assembled first in the workshop and improve the accuracy required for on-site installation.

Flake type grate bar

1.Vibrating

There is a small inclination between the grate surface and the horizontal plane, and the grate piece generates periodic vibration by the action of the motor and the eccentric wheel. When vibrating, the fuel layer continuously moves toward the rear of the furnace, so that the burnt ash falls into the ash pit at the end of the grate. This grate is characterized by a simple structure.

2. Feeding bottom

A trough-shaped grate with a screw rod at the bottom of the trough, leading to the coal hopper outside the furnace. The coal is sent from the lower part of the coal hopper to the coal tank through the auger, and enters the high temperature zone from bottom to top. When the ash exceeds the accumulation angle, it is discharged to both sides by gravity. The grate structure is simple, but has certain requirements on the particle size and humidity of the coal, and is generally only applicable to small industrial boilers having an evaporation amount of less than 1 ton / hr.

3. Reciprocating grate

It consists of a set of fixed grate pieces and a set of reciprocating movable grate pieces, which are divided into two types: stepped and horizontal. The reciprocating motion of the movable grate plate gradually pushes the coal seam to the rear combustion, so the grate is more adaptable to the coal species.