CN1045333C - Flat-wave and fixed fire grate - Google Patents

Abstract

The present invention relates to a flat wave-shaped fixed fire grate of which natural air permeability and combustion intensity are larger than those of a traditional flat fixed fire grate. The present invention is suitable for a boiler, a furnace, a range furnace and an oven so that any occasion using the flat fire grate can obtain strong combustion and smoke abatement. The present invention is a new generation of the flat fixed fire grate.

Description

Flat-wave and fixed fire grate

The present invention relates to a kind of novel plane fixed grate.

Be leveraged to modern widely used plane fixed grate, the fire bars of fire grate is to arrange in one plane or on the director sphere from ancient times.Gap between adjacent two fire bars is the maximum ventilation gap with the maximal clearance of freely not leaving out by mistake coal piling.The gas permeability that this clearance limit far can not satisfy the high-strength burning of current natural wind and eliminate smoke and require.

The present invention is a kind of flat-wave and fixed fire grate of designing according to the coal piling mechanics principle, it is characterized in that the fire bars on the fire grate is not at grade, but be distributed in two parallel planes according to strange, even number, along horizontal one on next, descending as the odd number fire bars, the even number fire bars is last, and integral body laterally is undaform, and the gap of two adjacent fire bars is the inclined-plane up and down.

In conjunction with Figure of description the combustion mechanism essence of this fire grate is given explanation.

Among the figure: (1) is the odd number fire bars, and (2) are the even number fire bars.

Essence for convenience of explanation, plane undaform fire grate is realized like this: fire grate all odd number fire bars in plane are moved down a distance promptly.As figure.

If fire grate horizontal maximal clearance in plane is a, move down back this gap and become gap, inclined-plane a ', angle is θ, then $a^{\′}=\frac{a}{\mathrm{COS\θ}}.$

If gap top coal piling line heavily is W, the horizontal clearance a pressure of reaching the standard grade is P, and a ' pressure of reaching the standard grade in gap, inclined-plane has W=Pa=P ' a ' when 45 ° of θ ', so P '=PCOS θ P '＜P.

Push away to such an extent that though gap, inclined-plane a ' has increased thus, by the minimizing of coal piling normal pressure thereon, so can make coal piling freely the amount of leaving out by mistake roughly remain unchanged, but a '＞a increases ventilation gap, has therefore improved the combustion intensity of fire grate.

Because the intergranular frictional force of coal piling, above fire bar bearer great, below the fire bars load-bearing few, relax so gap, inclined-plane a ' goes up the coal seam, more increased the gas permeability of fire grate.In conjunction with the good formed high-temperature coking scaling loss of loose gas permeability of coal seam mechanism, make this fire grate have strong combustion intensity positive feedback.

This flat-wave and fixed fire grate is the plane fixed grate of a new generation, can be used in vertical boiler, the horizontal small boiler, and life use stove is with overheavy firing and alleviate over-emitting black exhaust.

Claims (1)

1. A kind of flat-wave and fixed fire grate, the fire bars that it is characterized in that fire grate is not in one plane, but all odd number fire grates are arranged on two parallel planes with the even number fire grate, integral body laterally becomes undaform.