Grate cooler, self-cleaning inclined grate bed and method of operation thereof

Abstract

The application provides a grate cooler, a self-cleaning inclined grate and a working method thereof, wherein the self-cleaning inclined grate comprises a support, a ladder-shaped inclined plate arranged on the support and a plurality of grate plates arranged on each step surface of the ladder-shaped inclined plate, wherein the grate plate comprises a fixed plate and an elastic plate. When the clinker passes through the grate plate, the elastic plate is pushed to move downward and press the reset spring, and when the weight of the accumulated clinker decreases, the elastic plate is bounced upward to reset under the action of the reset spring, and the residual clinker on the elastic plate is bounced up, so that the clinker is prevented from accumulating on the elastic plate, the material conveying channel is prevented from being blocked due to the snowman, and the continuous and smooth conveying of the clinker on the grate is ensured.

Description

Technical Field

[0001] This invention belongs to the field of clinker cooling technology, specifically relating to an inclined grate bed used in clinker cooling, and more particularly to a grate cooler, a self-cleaning inclined grate bed, and its working method. Background Technology

[0002] A grate cooler is a key piece of equipment in a cement production line used to cool clinker. It typically has inclined grates inside, on which the clinker is conveyed and cooled from high to low. When the clinker particles are fine or have a high moisture content, they tend to accumulate on the grate and form clumps resembling snowmen; this phenomenon is known as "snowman building."

[0003] In related technologies, inclined grate beds are mostly fixed flat plate structures, and the conveying width of the grate plate remains unchanged during operation. Once a snowman-like phenomenon occurs, the accumulated clinker will directly obstruct the normal conveying path of subsequent clinker, causing clinker to stagnate and congest on the grate plate, and in severe cases, it may even cause the entire production line to be blocked and shut down.

[0004] Therefore, how to prevent clinker from piling up like snowmen when being conveyed on an inclined grate is a technical problem that urgently needs to be solved.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one grate cooler, a self-cleaning inclined grate bed, and a method for operating the same.

[0007] In a first aspect, embodiments of this disclosure provide a self-cleaning inclined grate bed, comprising: support; A stepped inclined plate is mounted on the support. Multiple grates are laid on each step surface of the stepped inclined plate; The remaining grate plates, excluding those on the lowest step surface, include: Fixed plate and elastic plate; The fixing plate is fixedly mounted on the stepped surface of the stepped inclined plate; The sidewall of the elastic plate abuts against the sidewall of the fixed plate, and is elastically connected to the fixed plate on the next step surface of the stepped inclined plate through a return spring. Furthermore, the bottom of the elastic plate is slidably connected to the bottom surface of the fixed plate via an L-shaped limiting part; The elastic plate is configured such that when the clinker continuously passes through the grate, the elastic plate is pressed downward and moves downward, and is reset upward under the elastic restoring force of the reset spring, so that the elastic plate vibrates up and down.

[0008] In one optional embodiment, the fixing plate is provided with a plug-in groove in the upstream direction of the clinker conveying direction; Along the clinker conveying direction, in the two grate plates of two adjacent upper and lower step surfaces, the elastic plate of the grate plate on the upper step surface is elastically connected to the bottom of the insertion groove of the grate plate on the lower step surface through the return spring.

[0009] In one optional embodiment, the elastic plate is inverted L-shaped; The horizontal section of the elastic plate abuts against the side wall of the fixed plate; The vertical section of the elastic plate is inserted into the insertion groove of the grate on the next step surface, and the bottom surface of the vertical section of the elastic plate is elastically connected to the bottom of the insertion groove through a return spring.

[0010] In one optional embodiment, the fixing plate has an installation notch in the downstream direction along the clinker conveying direction; The elastic plate is installed within the mounting notch.

[0011] In one optional embodiment, the mounting notch is L-shaped; The elastic plate is fastened into the mounting notch; Furthermore, the sidewall of the horizontal section of the elastic plate abuts against the sidewall of the vertical section of the mounting notch, and the sidewall of the vertical section of the elastic plate abuts against the sidewall of the horizontal section of the mounting notch.

[0012] In an optional embodiment, the self-cleaning inclined grate further includes: A ventilation duct is located below the stepped inclined plate and is used to cool the grate.

[0013] In one optional embodiment, the vertical section of the mounting notch is provided with a vent hole; The vent hole is used to connect the mounting notch and the ventilation pipe; When the elastic plate vibrates, the ventilation holes of the vertical section of the mounting notch are exposed during the downward process, so that the clinker on the surface of the elastic plate is blown along the clinker conveying direction by the airflow in the ventilation pipe.

[0014] Secondly, embodiments of this disclosure also provide a grate cooler, including the self-cleaning inclined grate bed as described above.

[0015] Thirdly, this disclosure also provides a method for operating a self-cleaning inclined grate as described above, the method comprising: Clinker is transferred via a self-cleaning inclined grate bed; As the clinker continuously passes through the grate, the elastic plate is pressed downward and moves in conjunction with the return spring to cause the elastic plate to vibrate up and down.

[0016] In an optional embodiment, the self-cleaning inclined grate further includes: A ventilation duct is provided below the stepped inclined plate and is used to cool the grate. The working method of the self-cleaning inclined grate also includes: When the elastic plate vibrates, the ventilation pipe is connected to the upper part of the elastic plate during the downward process, so that the clinker on the surface of the elastic plate is blown along the clinker conveying direction by the airflow in the ventilation pipe.

[0017] The beneficial effects of this invention are that the grate cooler, the self-cleaning inclined grate bed, and its working method divide the grate plate into a fixed plate and an elastic plate. When the clinker passes through the grate plate, it pushes the elastic plate downward and squeezes the return spring. When the weight of the accumulated clinker decreases, the elastic plate rebounds upward under the action of the return spring, lifting the clinker remaining on the elastic plate. Through the up-and-down vibration of the elastic plate, clinker is prevented from accumulating on the elastic plate, thereby avoiding the problem of material conveying channel blockage caused by the accumulation of clinker and ensuring that the clinker can be continuously and smoothly conveyed on the grate bed.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of a self-cleaning inclined grate provided in an embodiment of this disclosure; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A cross-sectional view of a portion of the structure of a self-cleaning inclined grate provided in an embodiment of this disclosure; Figure 4A flowchart illustrating the working method of the self-cleaning inclined grate provided in this embodiment of the disclosure.

[0022] In the diagram: 100, bracket; 200, stepped inclined plate; 300, grate; 310, fixing plate; 311, insertion slot; 312, installation notch; 3121, vent hole; 320, elastic plate; 321, L-shaped limiting part; 330, return spring; 400, ventilation pipe; 500, clinker. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] Research has revealed that inclined grate beds are mostly fixed flat plate structures, with the grate width remaining constant during operation. Once a "snowman effect" occurs, the accumulated clinker directly obstructs the normal conveying path of subsequent clinker, causing clinker to stagnate and become congested on the grate, which in severe cases can even lead to a complete production line shutdown.

[0026] Based on the above research, this disclosure provides a grate cooler, a self-cleaning inclined grate bed, and its working method. By dividing the grate plate into a fixed plate and an elastic plate, when clinker passes through the grate plate, it pushes the elastic plate downward and squeezes the return spring. When the weight of the accumulated clinker decreases, the elastic plate rebounds upward under the action of the return spring, lifting the clinker remaining on the elastic plate. Through the up-and-down vibration of the elastic plate, clinker is prevented from accumulating on the elastic plate, thereby avoiding the problem of material conveying channel blockage caused by the accumulation of clinker and ensuring that clinker can be continuously and smoothly conveyed on the grate bed.

[0027] The shortcomings of the above solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure embodiments in this article should be considered as contributions made by the inventors during the development of the present disclosure embodiments.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please see Figure 1 and Figure 2 At least one embodiment provides a self-cleaning inclined grate bed, comprising: a support 100; a stepped inclined plate 200 disposed on the support 100; and a plurality of grate plates 300 laid on each step surface of the stepped inclined plate 200; wherein, excluding the bottom step surface, the remaining grate plates 300 comprise: a fixing plate 310 and an elastic plate 320; the fixing plate 310 is fixedly disposed on the step surface of the stepped inclined plate 200; the sidewall of the elastic plate 320 is attached to the fixing plate 310. The side wall of the elastic plate 320 is supported, and it is elastically connected to the fixed plate 310 on the next step surface of the stepped inclined plate 200 through the return spring 330; and the bottom of the elastic plate 320 is slidably connected to the bottom surface of the fixed plate 310 through the L-shaped limiting part 321; the elastic plate 320 is configured such that when the clinker 500 continuously passes through the grate 300, the elastic plate 320 is pressed downward and moves downward, and is reset upward under the elastic restoring force of the return spring 330, so that the elastic plate 320 vibrates up and down.

[0031] By dividing the grate into a fixed plate and an elastic plate, when clinker passes through the grate, it pushes the elastic plate downward and squeezes the return spring. When the weight of the accumulated clinker decreases, the elastic plate rebounds upward under the action of the return spring, lifting the clinker remaining on the elastic plate. Through the up-and-down vibration of the elastic plate, clinker is prevented from accumulating on the elastic plate, thus avoiding the problem of material conveying channel blockage caused by the accumulation of clinker and ensuring that clinker can be continuously and smoothly conveyed on the grate.

[0032] The return spring is made of heat-resistant spring steel / high-temperature alloy.

[0033] It should be noted that the spring force of the return spring 330 is set according to the weight of the clinker during normal conveying on the elastic plate. That is, during normal clinker conveying, the return spring 330 is pressed by one-quarter to one-third of its stroke so that when the weight of the clinker changes, the return spring 330 has enough deformation space to allow the elastic plate 320 to descend.

[0034] Please see Figure 2 and Figure 3The fixed plate 310 is provided with an insertion groove 311 in the upstream direction of the clinker 500 conveying direction; in the two grate plates 300 of two adjacent upper and lower step surfaces along the clinker 500 conveying direction, the elastic plate 320 of the grate plate 300 on the upper step surface is elastically connected to the bottom of the insertion groove 311 of the grate plate 300 on the next step surface through the reset spring 330.

[0035] When the elastic plate 320 moves downward under the pressure of the clinker 500, the vertical section of the elastic plate 320 can slide smoothly in the insertion groove 311, ensuring the guidance and stability of the movement of the elastic plate 320 and preventing the elastic plate 320 from deviating or getting stuck.

[0036] It should be noted that the fixing plate 310 of the grate 300 on the uppermost step surface of the stepped inclined plate 200 has no insertion groove 311, and the grate 300 on the lowermost step surface of the stepped inclined plate 200 has no elastic plate 320.

[0037] Please continue reading. Figure 2 and Figure 3 The elastic plate 320 is inverted L-shaped; the horizontal section of the elastic plate 320 abuts against the side wall of the fixed plate 310; the vertical section of the elastic plate 320 is inserted into the insertion groove 311 of the grate 300 on the next step surface, and the bottom surface of the vertical section of the elastic plate 320 is elastically connected to the bottom of the insertion groove 311 through a return spring 330.

[0038] The horizontal section of the elastic plate 320 abuts against the side wall of the fixed plate 310, thereby ensuring the sealing between the fixed plate 310 and the elastic plate 320 and preventing fine materials in the material from leaking out of the gaps.

[0039] Please see Figure 2 and Figure 3 The fixed plate 310 has an installation notch 312 in the downstream direction of the clinker 500 conveying direction; the elastic plate 320 is installed in the installation notch 312.

[0040] By opening an installation notch 312 in the downstream direction of the clinker 500 conveying direction in the fixed plate 310, and installing the elastic plate 320 in the installation notch 312, the elastic plate 320 can be embedded inside the fixed plate 310, making the overall structure more compact. The existing integrated grate 300 can be directly replaced without modifying other components, which is convenient for production line upgrades.

[0041] It should be noted that the mounting notch 312 is L-shaped; the elastic plate 320 is fastened inside the mounting notch 312; and the side wall of the horizontal section of the elastic plate 320 abuts against the side wall of the vertical section of the mounting notch 312, and the side wall of the vertical section of the elastic plate 320 abuts against the side wall of the horizontal section of the mounting notch 312.

[0042] The mounting notch 312 is set as an L-shape, and the elastic plate 320 is fastened in the mounting notch 312. The horizontal side wall of the elastic plate 320 abuts against the vertical side wall of the mounting notch 312, and the vertical side wall of the elastic plate 320 abuts against the horizontal side wall of the mounting notch 312. The complementary L-shaped structure realizes multi-faceted fitting and mutual limiting between the elastic plate 320 and the fixed plate 310, thereby enhancing the stability of the connection between the elastic plate 320 and the fixed plate 310.

[0043] Please see Figure 1 and Figure 3 The self-cleaning inclined grate bed further includes a ventilation pipe 400, which is disposed below the stepped inclined plate 200 and is used to cool the grate plate 300.

[0044] The cooling airflow provided by the ventilation duct 400 can promptly remove the heat from the grate 300, thereby cooling the clinker 500 on the grate 300.

[0045] It should be noted that the vertical section of the mounting notch 312 is provided with a vent hole 3121; the vent hole 3121 is used to connect the mounting notch 312 and the ventilation pipe 400; when the elastic plate 320 vibrates, the vent hole 3121 of the vertical section of the mounting notch 312 is exposed during the downward process, so that the clinker (500) on the surface of the elastic plate 320 is blown along the clinker (500) conveying direction by the airflow in the ventilation pipe 400.

[0046] When the snowman-building phenomenon occurs, the elastic plate 320 moves downward to expose the vent 3121, and the airflow in the ventilation pipe 400 can then flow through the vent 3121. Figure 3 The airflow blows out in the F1 direction, carrying the clinker 500 accumulated on the elastic plate 320 along the clinker 500 conveying direction. On the one hand, after the elastic plate 320 is pressed downward, its upper surface is lower than the bearing surface of the fixed plate 310, and the effective bearing width of the elastic plate 320 is reduced accordingly. The accumulated clinker loses part of its support and collapses along the clinker 500 conveying direction, thereby clearing the material channel. On the other hand, the airflow actively disperses the accumulated material. The combined effect of these two methods improves the removal effect.

[0047] At least one embodiment also provides a grate cooler, including a self-cleaning inclined grate as described above.

[0048] Please see Figure 4 At least one embodiment also provides a working method for a self-cleaning inclined grate as described above. By dividing the grate into a fixed plate and an elastic plate, when clinker passes through the grate, the elastic plate is pushed downward and squeezes the return spring. When the weight of the accumulated clinker decreases, the elastic plate rebounds upward under the action of the return spring, lifting the clinker remaining on the elastic plate. Through the up-and-down vibration of the elastic plate, clinker is prevented from accumulating on the elastic plate, thereby avoiding the problem of material conveying channel blockage caused by the accumulation of clinker and ensuring that clinker can be continuously and smoothly conveyed on the grate.

[0049] Specifically, the working method includes: S110: Clinker 500 is transferred via a self-cleaning inclined grate.

[0050] S120: When the clinker 500 continuously passes through the grate 300, the elastic plate 320 is pressed downward and moves in cooperation with the return spring 330 to make the elastic plate 320 vibrate up and down.

[0051] Specifically, the self-cleaning inclined grate also includes: A ventilation duct 400 is disposed below the stepped inclined plate 200 and is used to cool the grate 300.

[0052] The working method of the self-cleaning inclined grate also includes: When the elastic plate 320 vibrates, the ventilation pipe 400 is connected to the upper part of the elastic plate 320 during the downward process, so that the clinker 500 on the surface of the elastic plate 320 is blown along the clinker 500 conveying direction by the airflow in the ventilation pipe 400.

[0053] The beneficial effects of this invention are that it provides a grate cooler, a self-cleaning inclined grate bed, and a method for operating the same. The self-cleaning inclined grate bed includes: a support 100; a stepped inclined plate 200 disposed on the support 100; and multiple grate plates 300 laid on each step surface of the stepped inclined plate 200. Each grate plate 300 includes: a fixing plate 310 and an elastic plate 320. The fixing plate 310 is fixedly disposed on the step surface of the stepped inclined plate 200. The sidewall of the elastic plate 320 abuts against the sidewall of the fixing plate 310 and is elastically connected to the fixing plate 310 on the next step surface of the stepped inclined plate 200 via a return spring 330. By dividing the grate into a fixed plate and an elastic plate, when clinker passes through the grate, it pushes the elastic plate downward and squeezes the return spring. When the weight of the accumulated clinker decreases, the elastic plate rebounds upward under the action of the return spring, lifting the clinker remaining on the elastic plate. Through the up-and-down vibration of the elastic plate, clinker is prevented from accumulating on the elastic plate, thus avoiding the problem of material conveying channel blockage caused by the accumulation of clinker and ensuring that clinker can be continuously and smoothly conveyed on the grate.

[0054] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0055] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0056] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0057] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0058] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-cleaning inclined grate bed, characterized in that, include: Bracket (100); A stepped inclined plate (200) is disposed on the support (100); Multiple gratings (300) are laid on each step surface of the stepped inclined plate (200); The remaining grate plates (300) excluding those on the lowest step surface include: Fixed plate (310) and elastic plate (320); The fixing plate (310) is fixedly disposed on the step surface of the stepped inclined plate (200); The sidewall of the elastic plate (320) abuts against the sidewall of the fixed plate (310), and is elastically connected to the fixed plate (310) on the next step surface of the stepped inclined plate (200) by a return spring (330). Furthermore, the bottom of the elastic plate (320) is slidably connected to the bottom surface of the fixed plate (310) via an L-shaped limiting part (321); The elastic plate (320) is configured such that when the clinker (500) continuously passes through the grate (300), the elastic plate (320) is pressed downward and reset upward under the elastic restoring force of the return spring (330), so that the elastic plate (320) vibrates up and down.

2. The self-cleaning inclined grate as described in claim 1, characterized in that, The fixed plate (310) is provided with a plug groove (311) in the upstream direction of the clinker (500) conveying direction; Along the clinker (500) conveying direction, in the two grate plates (300) of two adjacent upper and lower step surfaces, the elastic plate (320) of the grate plate (300) on the upper step surface is elastically connected to the bottom of the groove (311) of the grate plate (300) on the next step surface through the reset spring (330).

3. The self-cleaning inclined grate as described in claim 2, characterized in that, The elastic plate (320) is inverted L-shaped; The horizontal section of the elastic plate (320) abuts against the side wall of the fixed plate (310); The vertical section of the elastic plate (320) is inserted into the insertion groove (311) of the grate (300) on the next step surface, and the bottom surface of the vertical section of the elastic plate (320) is elastically connected to the bottom of the insertion groove (311) by a return spring (330).

4. The self-cleaning inclined grate as described in claim 3, characterized in that, The fixing plate (310) has an installation notch (312) in the downstream direction of the clinker (500) conveying direction; The elastic plate (320) is installed in the mounting notch (312).

5. The self-cleaning inclined grate as described in claim 4, characterized in that, The installation notch (312) is L-shaped; The elastic plate (320) is fastened into the mounting notch (312); Furthermore, the sidewall of the horizontal section of the elastic plate (320) abuts against the sidewall of the vertical section of the mounting notch (312), and the sidewall of the vertical section of the elastic plate (320) abuts against the sidewall of the horizontal section of the mounting notch (312).

6. The self-cleaning inclined grate as described in claim 4, characterized in that, The self-cleaning inclined grate also includes: A ventilation duct (400) is disposed below the stepped inclined plate (200) and is used to cool the grate plate (300).

7. The self-cleaning inclined grate as described in claim 6, characterized in that, The vertical section of the installation notch (312) is provided with a vent (3121). The vent (3121) is used to connect the mounting notch (312) and the ventilation pipe (400); When the elastic plate (320) vibrates, the ventilation hole (3121) of the vertical section of the mounting notch (312) is exposed during the downward process, so that the clinker (500) on the surface of the elastic plate (320) is blown along the clinker (500) conveying direction by the airflow in the ventilation pipe (400).

8. A grate cooler, characterized in that, include: The self-cleaning inclined grate as described in any one of claims 1-7.

9. A method for operating a self-cleaning inclined grate as described in any one of claims 1-7, characterized in that, The working method includes: Clinker (500) is transferred via a self-cleaning inclined grate; When the clinker (500) continuously passes through the grate (300), the elastic plate (320) is pressed downward and moves in cooperation with the return spring (330) to make the elastic plate (320) vibrate up and down.

10. The working method of the self-cleaning inclined grate as described in claim 9, characterized in that, The self-cleaning inclined grate also includes: A ventilation duct (400) is disposed below the stepped inclined plate (200) and is used to cool the grate plate (300); The working method of the self-cleaning inclined grate also includes: When the elastic plate (320) vibrates, the ventilation pipe (400) is connected to the upper part of the elastic plate (320) during the downward process, so that the clinker (500) on the surface of the elastic plate (320) is blown along the clinker (500) conveying direction by the airflow in the ventilation pipe (400).

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