SK282194B6 - Cooling deck of cooler grate - Google Patents

Abstract

The cooling plate of the cooling grate of the cooler, in particular the cement clinker of air, is formed such that at least two rows of longitudinal bores (4) are provided on the upper surface (2) and face (3) of the cooling plate (1) for receiving continuous cooling projections (5) parallel in the direction of movement of the material on the grate surface. The width of the cooling projections (5) above the cooling surface is greater than the width of the longitudinal holes (4). Between the lower surface of the projections (5) and the upper surface (2) and the face (3) of the cooling plate (1), the longitudinal joints (6) for supplying cooling air to the cooled material and on the upper surface (2) between the projections (5) are the transverse ribs, the height of which is less than the height of the protrusions (5), and a baffle (10) attached to the bottom thereof under the upper cooling surface (2). The upper surface (2) and the protrusions (5) are provided with cooling ribs (7, 8) on their lower sides.

Description

Technical field

The invention relates to a cooling plate of a grate of a radiator for cooling granular materials, in particular cement clinker, after firing, for example in a rotary kiln.

BACKGROUND OF THE INVENTION

In the known cooling plates of the grate of the cement clinker and similar granular materials, the cooling air is supplied to the layer of chilled material deposited on the upper cooling surface of the grate either through openings of circular cross-section or through the joints located near the bottom of the depressions that retain a portion of the clinker poured under them. A disadvantage of the first embodiment is, in particular, the insufficient heat dissipation from the grate plate by cooling air and thus increased wear at a higher temperature of the plate. In other embodiments, there is an increased risk of blinding of air intake joints by particles or plastic clinker, which leads to a deterioration of the cooling effect in relation to the board itself as well as the material to be cooled. Also, greater friction between the cooling surface of the plate and the clinker layer as they move relative to it may cause a greater increase in the forces exerted on the grate surface with negative consequences therefrom. These shortcomings result in increased investment and operating costs per product unit.

SUMMARY OF THE INVENTION

The above mentioned drawbacks are eliminated by the cooling plate of the grate of the radiator, in particular for cooling the cement clinker by air, with openings for cooling gas passage and devices for placing on the grate support elements, which is based on the at least two rows of longitudinal holes for receiving continuous cooling lugs, wherein the axes of the longitudinal openings and the surface lines of the cooling lugs lie in planes perpendicular to the upper cooling surface and parallel to the direction of movement of the material and the grate surface, the width of the cooling lugs above the cooling surface is greater than the width of the longitudinal openings that between the lower surface of the cooling projections and the upper cooling surface and the front cooling surface of the cooling plate there are longitudinal joints for supplying cooling gas to the layer of cooled material and that on the upper cooling surface in the space between the cooling projections transverse fins are located whose height is less than the height of the cooling lugs and that a baffle is attached to its lower part in the space below the upper cooling surface and that the upper cooling surface and cooling lugs are provided with cooling fins on their undersides.

The cooling plate of the radiator grate according to the invention allows a more even distribution of the cooling gas over the grate surface and better cooling of the cooling plate. In addition to increasing service life, the design of the cooling plate permits the replacement of the most stressed parts when the actual plate is used. In some cases, transverse ribs of appropriate height may be positioned in the space between the cooling projections to control the relative velocity of movement of the copper through the cooled material and the cooling surface of the plate. For better heat dissipation from the cooling plate, the lower surfaces of the cooling projections and its cooling surface are provided with fins. The air flow entering the cooling plate is directed by a partition attached to its bottom.

The arrangement of the cooling plate according to the invention results in an improvement of its thermo-technical function as well as an extension of the service life, which results in a reduction of operating and investment costs per unit of product.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated in more detail with reference to the accompanying drawing, in which: FIG. 1 shows a longitudinal section (B-B) of the cooling plate; FIG. 2 is a plan view thereof and FIG. 3 is a cross-sectional view (A-A).

DETAILED DESCRIPTION OF THE INVENTION

The cooling plate of the radiator grate according to the drawing consists of its own cooling plate 1 with an upper cooling surface 2 and a front cooling surface 3, in which at least two rows of longitudinal openings 4 for accommodating continuous cooling projections 5 parallel to the material movement direction on the grate surface. The cooling projections 5 are wider than the longitudinal openings 4 and are arranged therein so that longitudinal joints 6 are formed between their lower surface and the upper cooling surfaces of the cooling plate 1 for supplying cooling air to the chilled clinker layer. Both the cooling plate 1 and the cooling projections 5 are provided with ribs 7 and 8 on the air intake side, which improve heat dissipation from the entire cooling plate 1. In order to regulate the relative velocity of the surface of the cooling plate 1 and the clinker interface, transverse ribs 9, the height of which is less than the height of the cooling projections 5. For better guidance of the cooling air into the space below the cooling surface of the cooling plate 1, a baffle 10 connected to the bottom of the cooling plate 1 is supported.

Cooling air flows from the carrier 11 into the space below the upper cooling surface 2, from where it passes through the longitudinal openings 4 to the longitudinal cooling cracks 6. From these, it is fed between the cooling projections 5 and further into the layer of cooled material.

Claims (3)

PATENT CLAIMS Cooling plate of a grate of a cooler, in particular for cooling the cement clinker by air, with openings for the passage of cooling gas and its placement on the grating support elements, characterized in that there are at least two cooling surfaces on the upper cooling surface (2) and the front cooling surface (3). a series of longitudinal openings (4) for receiving continuous cooling projections (5), wherein the axes of the longitudinal openings (4) and the surface lines of the cooling projections (5) lie in planes perpendicular to the upper cooling surface (2) and parallel to the material wherein the width of the cooling projections (5) above the cooling surface is greater than the width of the longitudinal openings (4) and further between the lower surface of the cooling projections (5) and the upper cooling surface (2) and the front cooling surface (3). ) for supplying cooling gas to the layer of cooled material. Cooling plate according to claim 1, characterized in that on the upper cooling surface (2), the cooling plate (2) is formed in a heat sink There are transverse ribs (9) whose height is less than the height of the cooling projections (5) and a baffle compartment (2) is attached in the space below the upper cooling surface (2). 10). Cooling plate according to claim 1 and 2, characterized in that the upper cooling surface (2) and the cooling projections (5) are provided with cooling fins (7, 8) on their undersides.