CZ53493A3 - Cooling plate of radiator grate - Google Patents

Abstract

A cooling plate is described for cooling grills, preferably for cooling cement clinker with air, designed in such a way that the top cooling surface 2 and the front cooling surface 3 of the cooling plate 1 have at least two rows of longitudinal openings 4 for placing mobile cooling protrusions 5, the axes of the longitudinal openings 4 and the lines of the surfaces of the cooling protrusions 5 being situated in planes perpendicular to the top cooling surface 2 and parallel to the direction of movement of the material on the surface of the grill, the width of the cooling protrusions 5 above the cooling surface being greater than the width of the longitudinal openings 4. Furthermore, between the bottom surface of the cooling protrusions 5 and the top cooling surface 2 and the frontal cooling surface 3 of the cooling plate 1 are longitudinal joints 6 for feeding cooling air into a layer of material to cool, and transverse ribbing 9 with a height lower than the height of the cooling protrusions 5 is situated on the top cooling surface 2 in the space between the cooling protrusions 5, and a guide wall 10 is fixed to its bottom part in the space below the top cooling surface 2, and the top cooling plate 2 while the cooling protrusions 5 have cooling ribbing 7, 8. <IMAGE>

Description

(57) The cooling plate (1) of the grate of the radiator for cooling, in particular, cement clinker by air, is formed such that at least two rows of longitudinal bores (4) are provided on the upper surface (2) and front face (3) of the cooling plate (4). cooling the projections (5), the axes of the elongated holes (4) and the surface lines of cooling the projections (5) lie in planes perpendicular to the upper heatsink surface (2) and parallel to the direction of movement of the material on the grate surface, the width chlat ¹ dicích projections (5 ) above the cooling surface is greater than the width of the longitudinal openings (4). There are longitudinal joints (6) between the lower surface of the projections (5) and the upper surface (2) and the face (3) of the cooling plate (1) for supplying the gas to the cooled material. On the upper surface (2) between the projections (5) there are transverse ribs (9) whose height is less than the height of the projections (5). A rectifying baffle (10) is connected to the lower part, below the upper cooling surface (2). The upper surface (2) and the projections (5) are provided with cooling fins (7, 8) on their undersides.

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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.

In the prior art grate cooler cooling plates for cement clinker and similar granular materials, cooling air is supplied to a layer of cooled material deposited on the upper cooling surface of the grate, either through openings of circular cross section or through joints on the cooling surface against the force exerted by the clinker. seams located near the bottom of the depressions that retain a portion of the clinker poured into them under the surface of the cooling surface. A disadvantage of the first embodiment is, in particular, the insufficient removal of hot cooling air from the grate plate and hence increased wear at a higher temperature of the plate. (In other embodiments, there is an increased risk of blinding of air intake joints with particulate or plastic clinker, which leads to a deterioration of the cooling effect relative to the plate itself and to the material to be cooled. the cause of the greater increase in the forces exerted on the slatted surface, with the negative consequences resulting therefrom, results in an increase in investment and operating costs per unit of product.

The aforementioned drawbacks are eliminated by the cooling plate of the grate of the radiator, in particular for cooling the cement clinker with air, with openings for the passage of cooling gas and devices to be supported on the grate support elements, essentially by providing on the upper cooling surface and the cooling front face! The plates are at least two rows of longitudinal openings for receiving continuous cooling projections, wherein the axes of the longitudinal!

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the openings and the surface lines of the cooling fins lie in planes perpendicular to the upper cooling surface and parallel to the material movement direction on the grate surface, the width of the cooling fins over the cooling surface being greater than the width of the longitudinal openings; both the cooling surface and the front cooling surface of the cooling plate are longitudinal joints for inlet 4

In the cooling gas layer, in the cooled material layer and on the upper cooling surface in the space between the cooling projections, transverse ribs are located whose height is less than the height of the cooling projections and that to its lower part, in the space below the upper a rectifying baffle is connected to the cooling surface and that the upper cooling surface and the cooling projections 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 after _; grate area and better cooling plate cooling. In addition to increasing service life, the design of the cooling plate allows 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 relative movement speed between the material to be cooled and the plate cooling surface. For better heat dissipation from the cooling plate, the lower surfaces of the cooling projections and its cooling surfaces are provided with fins.

The flow of air entering the cooling plate is rectified by a partition attached to its bottom.

The arrangement of the cooling plate according to the invention results in an improvement of its heat-technical function as well as an extension of the service life. by reducing operating and investment costs per unit of product. . .;. · ..... . . .... AND

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated in greater detail with reference to the drawing, in which: Fig. 1 shows a longitudinal section of the cooling plate (B-B); Fig. Její is a plan view thereof;

(The cooler grate cooling plate according to the drawing consists of a cooling plate 1 with an upper cooling surface 2 and a front cooling surface 3 in which there are at least two rows of longitudinal openings 4 for receiving continuous cooling projections 5 parallel to the direction of material movement on the grate The cooling projections 5 are wider than the longitudinal openings 4 and are arranged therein so that longitudinal joints 8 are formed between their lower surface and the upper cooling surfaces of the cooling plate 1 to supply cooling air to the cooled clinker layer. 5, ribs 7 and 8 are provided on the air intake side to improve heat dissipation from the entire cooling plate 1. In order to control the relative speed of the surface of the cooling plate 1 and the clinker contact layer, transverse ribs 9 whose height can be is less than the height of the cooling coils Improving the fifth stupka directing cooling air into the space below the cooling surfaces of the cooling plates and serve baffle 10 attached to the bottom of the cooling plate 1 mounted on the carrier 11.

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The 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 gaps 6, from which it is supplied between the cooling projections 5 and further into the layer of cooled material.

Claims (3)

PATENT CLAIMS - <ie ø ^- *> o co '<G i -i - A> ι Z < ⁿ -S ¹ nc □ <X ”, o AND CJ o <o <A> σ o t / x k £ rc rc j C-. *. 1. A cooler rest plate, particularly for air-cooled chink clinker, with openings for the passage of a cooling pin and its placement on the grate support elements, characterized in that on the top cooling pioSe (2) and the front cooling ....... whose. (1) there are at least two snakes of longitudinal openings (4) for receiving continuous cooling projections (δ), the axes of the longitudinal openings (4) and the surface lines of the cooling projections (5) ) lies in planes perpendicular to the upper cooling surface (2) and parallel to the direction of movement of the material on the grate pioS, the width of the cooling projections (5) above the cooling surface being greater than the width of the longitudinal openings (4); between the lower surface of the cooling projections (5) and the upper cooling surface (2) and the front cooling surface (3) of the cooling plate (1) are longitudinal joints (5) for feeding the cooling foam into the layer of cooled material. Cooling plate according to claim 1, characterized in that on the upper cooling surface (2), in the space between the cooling protrusions (o), transverse fins (9) are located whose height is less than the height of the cooling protrusions (5). ) and that a baffle (10) is attached to its lower part, in the space below the upper cooling surface (2). 3. Cooling plate according to items 1 and 2, characterized by:! characterized in that the upper cooling surface (2) and the cooling protrusions (o) are provided with cooling fins (7) on their lower sides.