Heat insulation structure of grate cooler

Abstract

The utility model provides a heat insulation and heat preservation structure of a grate cooler, and relates to the technical field of grate coolers, the heat insulation and heat preservation structure comprises a grate cooler body, a conveying device is arranged in the grate cooler body, a cooling fan is arranged at the bottom of the grate cooler body, and the grate cooler body comprises an inner wall, a heat preservation cavity and an outer wall; the heat preservation cavity is formed between the inner wall and the outer wall, a liquid discharging pipe is arranged in the heat preservation cavity in a communicating mode, and the heat preservation cavity is formed in the grate cooler body, so that high temperature loss in the grate cooler body can be effectively prolonged, and heat loss of secondary air in the grate cooler body is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of grate coolers, and in particular to a heat insulation structure of a grate cooler. Background Art

[0002] Grate cooler is an important main machine in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. It also provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system.

[0003] The existing grate cooler is prone to excessive heat loss during use due to poor heat insulation of the grate cooler, resulting in low secondary air temperature and affecting heat energy recovery. Therefore, the utility model provides a heat insulation structure of the grate cooler. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a heat insulation and heat preservation structure of a grate cooler, which can solve the technical problems of heat insulation and heat preservation during the use of the grate cooler.

[0005] An embodiment of the present application provides a heat insulation structure of a grate cooler, including a grate cooler body, a conveying device is arranged in the grate cooler body, a cooling fan is arranged at the bottom of the grate cooler body, the grate cooler body includes an inner wall, a heat preservation cavity and an outer wall, the heat preservation cavity is arranged between the inner wall and the outer wall, and a liquid discharge pipe is connected to the heat preservation cavity.

[0006] Furthermore, a high temperature resistant brick wall layer is arranged on the inner side of the inner wall.

[0007] Furthermore, an electronic valve is provided on the liquid discharge pipe, and an end of the liquid discharge pipe is connected to a liquid heat exchange box.

[0008] Furthermore, the blanking portion of the grate cooler body is also provided with a plurality of material guide plates, the plurality of material guide plates are arranged at intervals on the inner wall, and a plurality of ventilation holes are provided on the material guide plates.

[0009] Furthermore, the material guide plate is arranged at an angle, and the loading end of the lower material guide plate and the blanking end of the upper material guide plate are in the same straight line.

[0010] Furthermore, a heat insulation component can be detachably provided on the outer side of the grate cooler body, and the heat insulation component includes a first heat insulation board, a second heat insulation board and a plurality of groups of snap-fit ​​components, and the first heat insulation board and the second heat insulation board are fixed on both sides of the grate cooler body through the snap-fit ​​components.

[0011] Furthermore, the snap-fit ​​assembly includes a fixed block, a hook, an elastic band and a snap ring. The fixed block is fixedly arranged on the first heat insulation board, the hook is fixedly arranged on the second heat insulation board, one end of the elastic band is fixed to the fixed block, the snap ring is fixed to the other end of the elastic band, and the snap ring is sleeved on the hook.

[0012] Beneficial effects of the utility model:

[0013] The grate cooler body provided by the utility model can effectively prolong the high temperature loss in the grate cooler body and reduce the heat loss of the secondary air in the grate cooler body by arranging a heat preservation chamber in the grate cooler body.

[0014] The material guide plate provided by the utility model can effectively prolong the heat exchange time between the material and the cooling air through the arrangement of the material guide plate, improve the heat exchange efficiency of the secondary air, and transmit the secondary air to the rotary kiln with a higher temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of an embodiment of the utility model;

[0018] Figure 3 This is another cross-sectional structural schematic diagram of an embodiment of the utility model.

[0019] The reference numerals are:

[0020] 1. Grate cooler body; 11. Inner wall; 111. High temperature resistant brick wall layer; 12. Insulation chamber; 13. Outer wall; 14. Guide plate; 141. Air vent; 2. Conveying device; 3. Cooling fan; 4. Liquid discharge pipe; 41. Electronic valve; 42. Liquid heat exchange box; 5. Insulation assembly; 51. First insulation board; 52. Second insulation board; 53. Snap assembly; 531. Fixing block; 532. Hook; 533. Elastic band; 534. Snap ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The embodiment of the present application discloses a heat insulation structure of a grate cooler.

[0028] Reference Figure 1-3 A heat insulation structure of a grate cooler includes a grate cooler body 1, a conveying device 2 is arranged in the grate cooler body 1, a cooling fan 3 is arranged at the bottom of the grate cooler body 1, the grate cooler body 1 includes an inner wall 11, a heat preservation cavity 12 and an outer wall 13, the heat preservation cavity 12 is arranged between the inner wall 11 and the outer wall 13, and a liquid discharge pipe 4 is arranged in the heat preservation cavity 12. When in use, the clinker enters the feeding end of the grate cooler body 1 from the rotary kiln and falls onto the conveying device 2, and the clinker is transported by the conveying device 2. At the same time, the cooling fan 3 below performs heat exchange cooling on the clinker on the conveying device 2. The secondary air after heat exchange carries the heat of the clinker back to the rotary furnace for secondary utilization. At the same time, an insulation chamber 12 is provided in the grate cooler body 1, and insulation liquid is injected into the insulation chamber 12 through the liquid discharge pipe 4. In the present embodiment, the insulation liquid is hot oil. By injecting the insulation liquid into the insulation chamber 12, the high temperature loss in the grate cooler body 1 can be effectively prolonged, and the heat loss of the secondary air in the grate cooler body 1 can be reduced.

[0029] Reference Figure 2-3 The inner wall 11 is provided with a high temperature resistant brick wall layer 111. The grate cooler is usually used to process high temperature materials or materials in the heat treatment process. The internal high temperature resistant brick wall layer 111 can effectively protect the equipment structure from the influence of high temperature. These high temperature resistant brick wall layers 111 can work stably under high temperature conditions to prevent the surface or structure of the equipment from being damaged or deformed due to thermal stress.

[0030] Reference Figure 1-2 An electronic valve 41 is provided on the liquid discharge pipe 4, and the end of the liquid discharge pipe 4 is connected to a liquid heat exchange box 42. By providing the electronic valve 41 under the liquid discharge pipe 4, the heat of the liquid in the insulation chamber 12 can be effectively regulated and exchanged to ensure the stability of the liquid temperature in the insulation chamber 12.

[0031] Reference Figure 2-3 The blanking part of the grate cooler body 1 is also provided with a plurality of guide plates 14, which are arranged at intervals on the inner wall 11, and a plurality of vents 141 are arranged on the guide plates 14. When in use, the clinker falls from above onto the guide plates 14 for heat exchange. The setting of the guide plates 14 can effectively extend the heat exchange time between the material and the cooling air, improve the heat exchange efficiency of the secondary air, and transmit the secondary air to the rotary kiln with a higher temperature.

[0032] More specifically, the guide plate 14 is inclined, and the feeding end of the lower guide plate 14 and the dropping end of the upper guide plate 14 are in the same straight line, which can effectively ensure the continuous and regular heat exchange between the clinker and the cooling gas.

[0033] Reference Figure 1-3The outer side of the grate cooler body 1 is also detachably provided with a heat insulation component 5, the heat insulation component 5 comprises a first heat insulation board 51, a second heat insulation board 52 and a plurality of groups of buckle components 53, the first heat insulation board 51 and the second heat insulation board 52 are fixed on both sides of the grate cooler body 1 through the buckle components 53;

[0034] Reference Figure 3 More specifically, the buckle assembly 53 includes a fixing block 531, a hook 532, an elastic band 533 and a snap ring 534. The fixing block 531 is fixedly arranged on the first heat insulation board 51, the hook 532 is fixedly arranged on the second heat insulation board 52, one end of the elastic band 533 is fixed to the fixing block 531, the snap ring 534 is fixed to the other end of the elastic band 533, and the snap ring 534 is sleeved on the hook 532;

[0035] When in use, the first heat insulation board 51 and the second heat insulation board 52 are respectively placed on both sides of the grate cooler body 1, and then the elastic band 533 on the first heat insulation board 51 is stretched to the hook 532 on the second heat insulation board 52 through the external support rod, and the snap ring 534 is matched with the hook 532, and the multiple snap-fit ​​components 53 are assembled and used to ensure that the first heat insulation board 51 and the second heat insulation board 52 are fixed on the grate cooler body 1. The arrangement of the first heat insulation board 51 and the second heat insulation board 52 can effectively protect the staff from being scalded by the high temperature of the grate cooler, while reducing the heat diffusion of the grate cooler and facilitating the replacement of the first heat insulation board 51 and the second heat insulation board 52.

[0036] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat insulation structure of a grate cooler, comprising a grate cooler body, a conveying device is arranged inside the grate cooler body, and a cooling fan is arranged at the bottom of the grate cooler body, characterized in that: The grate cooler body comprises an inner wall, a heat preservation cavity and an outer wall. The heat preservation cavity is arranged between the inner wall and the outer wall. A liquid discharge pipe is connected to the heat preservation cavity.

2. The heat insulation structure of a grate cooler according to claim 1, characterized in that: A high temperature resistant brick wall layer is arranged on the inner side of the inner wall.

3. The heat insulation structure of a grate cooler according to claim 1, characterized in that: The liquid discharge pipe is provided with an electronic valve, and the end of the liquid discharge pipe is connected with a liquid heat exchange box.

4. The heat insulation structure of a grate cooler according to claim 1, characterized in that: The blanking part of the grate cooler body is also provided with a plurality of guide plates, the plurality of guide plates are arranged on the inner wall at intervals, and a plurality of ventilation holes are arranged on the guide plates.

5. The heat insulation structure of a grate cooler according to claim 4, characterized in that: The material guide plate is arranged in an inclined manner, and a feeding end of the lower material guide plate and a blanking end of the upper material guide plate are in the same straight line.

6. The heat insulation structure of a grate cooler according to claim 1, characterized in that: The outer side of the grate cooler body is also detachably provided with a heat insulation component, which includes a first heat insulation board, a second heat insulation board and a plurality of groups of snap-fit ​​components. The first heat insulation board and the second heat insulation board are fixed on both sides of the grate cooler body through the snap-fit ​​components.

7. The heat insulation structure of a grate cooler according to claim 6, characterized in that: The snap-fit ​​assembly includes a fixed block, a hook, an elastic band and a snap ring. The fixed block is fixedly arranged on the first heat insulation board, the hook is fixedly arranged on the second heat insulation board, one end of the elastic band is fixed to the fixed block, the snap ring is fixed to the other end of the elastic band, and the snap ring is sleeved on the hook.

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