Cooling device of grate cooler

Abstract

The utility model discloses a grate cooler cooling device which comprises a grate bed arranged in a grate cooler, cooling bins are arranged at the positions, corresponding to all temperature sections, of the bottom of the grate bed, a partition plate is arranged in the middle of an inner cavity of each cooling bin, and cooling chambers are arranged in the positions, located on the two sides of each partition plate, of the inner cavity of each cooling bin. A ventilation pipe used for conveying cooling air is arranged in the middle of the bottom of the cooling chamber, and two symmetrically-distributed cover plates are arranged in the cooling chamber and located above the ventilation pipe. According to the cooling device of the grate cooler, the size of the ventilation groove in each temperature section can be adjusted according to the actual temperature of clinker, the air volume and the air speed of cooling air entering the grate seam of the grate plate in each temperature section are changed, and the clinker in each temperature section is fully cooled and reaches the specified temperature; the situation that the clinker in each temperature section does not reach the specified temperature due to the fact that the air volume and the air speed of the cooling air in each temperature section are fixed is avoided, and the cooling effect of the clinker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grate coolers, and particularly relates to a cooling device for a grate cooler. Background Technique

[0002] The grate cooler is an important main equipment in the clinker burning system of a cement plant. Its main function is to cool and convey cement clinker. During the conveying and cooling of the clinker, grate plates are required. It is through the movement of the grate plates that the clinker enters the cooler from the kiln and forms a material layer with a certain thickness on the grate bed. Then, the cooling air output by the cooling fan passes through the moving material layer on the grate bed. At the same time, under the push of the grate plates, the clinker gradually advances and cools in each temperature section on the grate bed by virtue of its own weight and the action of the wind force. When it reaches the end of the grate cooler, the temperature of the clinker reaches the ambient temperature, thus achieving the purpose of cooling and conveying the clinker.

[0003] However, the distinction of each temperature section on the grate bed of the existing grate cooler is to install grate plates with different grate gaps in each temperature section to change the air volume and air speed of the cooling air thereon. The air volume and air speed of the cooling air in each temperature section are fixed and cannot be adjusted according to the actual temperature of the clinker, which affects the cooling effect of the clinker in each temperature section. Therefore, those skilled in the art have provided a cooling device for a grate cooler to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cooling device for a grate cooler to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A grate cooler cooling device includes: a grate bed disposed inside the grate cooler. Cooling bins are provided at positions corresponding to each temperature section at the bottom of the grate bed. And, a partition is provided at the middle position of the inner cavity of the cooling bin. Cooling chambers are provided on both sides of the partition in the inner cavity of the cooling bin. A ventilation pipe for conveying cooling air is provided at the middle position of the bottom of the cooling chamber. And, two symmetrically distributed covers are provided above the ventilation pipe inside the cooling chamber. Both outer walls on both ends of the two covers away from each other are provided with rotating shafts. The covers are rotatably mounted on the inner wall of the cooling chamber through the rotating shafts. And, at the position corresponding to the rotating shaft on the outer wall of the cooling bin, an adjustment box is provided. A cavity is opened inside the adjustment box. One end of the rotating shaft close to the adjustment box penetrates through the cooling bin and extends into the cavity. And, a gear shaft is provided at the end of the rotating shaft inside the cavity. An adjustment plate is provided at the position corresponding to the gear shaft at the bottom of the cavity. A number of teeth are evenly provided on the end face of the adjustment plate. The teeth are meshed with the cavity. And, support ears are provided at both ends of the bottom of the adjustment box. A threaded rod is rotatably mounted between the two support ears. A slider is provided at the bottom of the adjustment plate. The slider penetrates through the adjustment box and extends below it. And, the end of the slider below the adjustment box is threadedly mounted on the outer wall of the threaded rod. The adjustment plate can slide inside the cavity through the rotation of the threaded rod.

[0007] Preferably, a through hole is opened at the middle position of the bottom of the cooling chamber. The ventilation pipe is installed inside the through hole. And, there is a ventilation slot between the two covers. The ventilation slot is directly above the ventilation pipe.

[0008] Preferably, a through slot communicating with the cavity is opened at the bottom of the adjustment box. The slider penetrates through the through slot and extends below the adjustment box.

[0009] Preferably, a threaded groove is opened inside the slider. The slider is threadedly mounted on the outer wall of the threaded rod through the threaded groove. And, the slider can slide inside the through slot through the rotation of the threaded rod.

[0010] Preferably, the internal thread directions in two adjacent threaded grooves are opposite.

[0011] Preferably, one end of the threaded rod penetrates through one of the support ears and extends outside it. And, a limit nut is provided at the end of the threaded rod outside the support ear. The limit nut is threadedly mounted on the outer wall of the threaded rod and closely abuts against the side wall of the support ear.

[0012] Preferably, a support plate is provided at the top of the outer wall of the cooling bin. A number of fastening bolts are evenly provided at the bottom of the support plate. The fastening bolts penetrate through the support plate and are threadedly mounted on the bottom of the grate bed.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] By arranging cooling bins for cooling in each temperature section at the bottom of the grate bed, when cooling the clinker on the grate bed, the threaded rod can be driven to rotate, driving two adjacent sliders installed thereon through the thread grooves to slide in the through grooves, enabling two adjacent adjusting plates to displace towards each other in the cavity. Then, the two adjusting plates displacing towards each other respectively drive two gear shafts meshed with the teeth thereon to rotate, and the two rotating gear shafts drive two cover plates to rotate in the cooling chamber through the rotating shafts connected thereto, adjusting the distance between the two cover plates, changing the size of the ventilation slots between the two cover plates. Then, turn the limit nut on the threaded rod to make the limit nut tightly fit against the side wall of the ear to tighten the threaded rod, preventing the threaded rod from rotating and defining the position of the cover plate after adjusting the position. Finally, let the cooling air in the ventilation pipe enter the cooling chamber and pass through the ventilation slots between the two cover plates and contact the grate plates and the clinker on the grate bed, so as to cool the clinker in each temperature section on the grate bed. It can adjust the size of the ventilation slots in each temperature section according to the actual temperature of the clinker, change the air volume and wind speed of the cooling air entering the grate gaps of the grate plates in each temperature section, fully cool the clinker in each temperature section and reach the specified temperature, avoiding the situation that the clinker in each temperature section does not reach the specified temperature due to the fixed air volume and wind speed of the cooling air in each temperature section, and improving the cooling effect of the clinker. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a grate cooler cooling device according to an embodiment of the present invention;

[0016] Figure 2 It is a three-dimensional schematic diagram of a cooling bin according to an embodiment of the present invention;

[0017] Figure 3 It is a connection schematic diagram of a gear shaft, an adjusting plate and an adjusting box according to an embodiment of the present invention;

[0018] Figure 4 It is a three-dimensional schematic diagram of an adjusting plate according to an embodiment of the present invention;

[0019] Figure 5 It is a connection schematic diagram of an adjusting plate and a threaded rod according to an embodiment of the present invention.

[0020] In the figure: 1, grate bed; 2, cooling bin; 201, cooling chamber; 202, through port; 21, ventilation pipe; 22, cover plate; 221, rotating shaft; 23, gear shaft; 24, adjusting box; 241, cavity; 242, through groove; 243, ear; 25, adjusting plate; 251, teeth; 252, slider; 253, thread groove; 26, threaded rod; 261, limit nut; 27, support plate; 28, fastening bolt. Detailed Embodiment

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. Additionally, the term "comprising" and any variation thereof are intended to cover non-exclusive inclusion.

[0022] Combined with Figures 1 - 5 As shown, a cooling device for a grate cooler includes: a grate bed 1 disposed inside the grate cooler. At positions corresponding to each temperature section at the bottom of the grate bed 1, cooling bins 2 are provided. Moreover, a partition is provided at the middle position of the inner cavity of the cooling bin 2. Cooling chambers 201 are provided on both sides of the partition in the inner cavity of the cooling bin 2. A ventilation pipe 21 for conveying cooling air is provided at the middle position of the bottom of the cooling chamber 201. And two symmetrically distributed covers 22 are provided above the ventilation pipe 21 inside the cooling chamber 201. Rotating shafts 221 are provided on the outer walls of both sides of the ends of the two covers 22 away from each other. The covers 22 are rotatably mounted on the inner wall of the cooling chamber 201 through the rotating shafts 221. Moreover, an adjustment box 24 is provided at the position corresponding to the rotating shaft 221 on the outer wall of the cooling bin 2. A cavity 241 is opened inside the adjustment box 24. One end of the rotating shaft 221 close to the adjustment box 24 penetrates through the cooling bin 2 and extends into the cavity 241. And a gear shaft 23 is provided at the end of the rotating shaft 221 inside the cavity 241. An adjustment plate 25 is provided at the position corresponding to the gear shaft 23 at the bottom of the cavity 241. A plurality of teeth 251 are evenly provided on the end face of the adjustment plate 25. The teeth 251 are engaged with the cavity 241. Moreover, support ears 243 are provided at both ends of the bottom of the adjustment box 24. A threaded rod 26 is rotatably mounted between the two support ears 243. A slider 252 is provided at the bottom of the adjustment plate 25. The slider 252 penetrates through the adjustment box 24 and extends below it. And the end of the slider 252 below the adjustment box 24 is threadedly mounted on the outer wall of the threaded rod 26. The adjustment plate 25 can slide inside the cavity 241 by the rotation of the threaded rod 26.

[0023] In one embodiment, when adjusting the air volume and air speed of the cooling air on the grate bed 1, the threaded rod 26 can be driven to rotate on the two lugs 243, and the two adjacent sliders 252 installed thereon through the threaded groove 253 are driven to slide in the through groove 242, so that the two adjacent adjusting plates 25 are displaced towards each other in the cavity 241. Then, the two adjusting plates 25 displaced towards each other respectively drive the two gear shafts 23 meshed with the teeth 251 thereon to rotate, and the two rotating gear shafts 23 drive the two cover plates 22 to rotate in the cooling chamber 201 through the rotating shafts 221 connected thereto, adjust the distance between the two cover plates 22, change the size of the ventilation slots between the two cover plates 22, and then let the ventilation pipe 21 installed in the through port 202 convey the cooling air into the cooling chamber 201, so that the cooling air in the cooling chamber 201 enters the grate gaps of the grate plate to contact the clinker from the ventilation slots, thereby achieving the cooling of the clinker on the grate bed 1. The size of the ventilation slots can be adjusted according to the actual temperature of the clinker, the air volume and air speed of the cooling air entering the grate gaps of the grate plate are changed, the clinker on the grate bed 1 is fully cooled and reaches the specified temperature, and the situation that the clinker on the grate bed 1 does not reach the specified temperature due to the fixed air volume and air speed of the cooling air is avoided, and the cooling effect of the clinker is improved.

[0024] In one embodiment, since cooling bins 2 are provided at the positions corresponding to the respective temperature sections at the bottom of the grate bed 1, when conveying the clinker conveyed on the grate bed 1, the sizes of the ventilation slots in the cooling bins 2 corresponding to the respective temperature sections can be adjusted respectively, the air volume and air speed of the cooling air in the respective cooling bins 2 are changed, so that the cooling air in each temperature section fully cools the clinker thereon, and the clinker in each temperature section is cooled to the specified temperature. The situation that the cooling effect of the subsequent temperature section is affected due to the clinker in the previous temperature section not reaching the cooling temperature is avoided, the cooling effect of the clinker in each temperature section is ensured, and the adjustment of the cooling air in each temperature section is realized.

[0025] In one embodiment, when adjusting the position of the cover plate 22 in the cooling bin 2, the threaded rod 26 can be driven to rotate on the two lugs 243, and the two adjacent sliders 252 installed thereon through the threaded groove 253 are driven to slide in the through groove 242, so that the two adjacent adjusting plates 25 displace towards each other in the cavity 241. Then, the two adjusting plates 25 that displace towards each other respectively drive the two gear shafts 23 meshing with the teeth 251 thereon to rotate, and the two rotating gear shafts 23 drive the two cover plates 22 to rotate in the cooling chamber 201 through the rotating shafts 221 connected thereto. Then, the limit nut 261 on the threaded rod 26 is screwed, and the limit nut 261 is tightened against the side wall of the lug 243 to screw the threaded rod 26, preventing the threaded rod 26 from rotating in the lug 243. This not only avoids the situation where the displacement of the adjusting plate 25 installed thereon due to the rotation of the threaded rod 26 causes the position deviation of the cover plate 22 meshing with it through the gear shaft 23, but also avoids the trouble that the change in the size of the ventilation slot due to the position deviation of the cover plate 22 causes the change in the air volume and wind speed of the cooling air, ensuring the stability of the cover plate 22 after adjusting the position and the cooling effect of the clinker.

[0026] In one embodiment, when installing the cooling bin 2, the cooling bin 2 can be covered on the top of the grate cooler 1, and the fastening bolts 28 on the support plate 27 are screwed to install the fastening bolts 28 at the bottom of the grate cooler 1. Then, the above steps are repeated to install each cooling bin 2 at the bottom of the grate cooler 1 corresponding to each temperature section in sequence, and the installation of the cooling bin 2 can be completed. The size of the ventilation slot in each cooling bin 2 corresponding to each temperature section can be adjusted respectively, and the air volume and wind speed of the cooling air in each cooling bin 2 can be changed, so that the cold zone air in each temperature section can fully cool the clinker thereon, ensuring the cooling effect of the clinker in each temperature section.

[0027] The working principle of the present utility model is as follows: when cooling the clinker on the grate bed 1, the threaded rods 26 on each cooling bin 2 can be respectively driven to rotate on the two support ears 243, and drive two adjacent sliders 252 installed thereon through the thread grooves 253 to slide in the through grooves 242, so that two adjacent adjusting plates 25 displace towards each other in the cavity 241. Then, the two adjusting plates 25 that displace towards each other respectively drive two gear shafts 23 meshed with the teeth 251 thereon to rotate, and the two rotating gear shafts 23 drive two cover plates 22 to rotate in the cooling chamber 201 through the rotating shafts 221 connected thereto, adjust the distance between the two cover plates 22, change the size of the ventilation slots between the two cover plates 22 in each cooling bin 2. Then, turn the limit nut 261 on the threaded rod 26 to make the limit nut 261 tightly fit against the side wall of the support ear 243 to tighten the threaded rod 26, prevent the threaded rod 26 from rotating in the support ear 243, and limit the position of the cover plate 22 after adjusting the position. Finally, let the cooling air in the ventilation pipe 21 enter the cooling chamber 201 and pass through the ventilation slots between the two cover plates 22 and contact the grate plates and the clinker on the grate bed 1, so as to cool the clinker in each temperature section on the grate bed 1. It can adjust the size of the ventilation slots in each temperature section according to the actual temperature of the clinker, change the air volume and air speed of the cooling air entering the grate gaps of the grate plates in each temperature section, enable the clinker in each temperature section to be fully cooled and reach the specified temperature, and avoid the situation that the clinker in each temperature section does not reach the specified temperature due to the fixed air volume and air speed of the cooling air in each temperature section, thus improving the cooling effect of the clinker.

[0028] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A grate cooler cooling device, comprising: The grate cooler bed (1) disposed inside the grate cooler is characterized in that cooling bins (2) are provided at positions corresponding to each temperature section at the bottom of the grate cooler bed (1), and a partition is provided at the middle position inside the cavity of the cooling bin (2). Cooling chambers (201) are provided on both sides of the partition inside the cavity of the cooling bin (2). An air duct (21) for conveying cooling air is provided at the middle position at the bottom of the cooling chamber (201). Two cover plates (22) are symmetrically distributed above the air duct (21) inside the cooling chamber (201). Rotating shafts (221) are provided on the outer walls of both sides of the ends of the two cover plates (22) away from each other. The cover plates (22) are rotatably mounted on the inner wall of the cooling chamber (201) through the rotating shafts (221). An adjustment box (24) is provided at the position corresponding to the rotating shaft (221) on the outer wall of the cooling bin (2). A cavity (241) is formed inside the adjustment box (24). One end of the rotating shaft (221) close to the adjustment box (24) penetrates through the cooling bin (2) and extends into the cavity (241). A gear shaft (23) is provided at the end of the rotating shaft (221) inside the cavity (241). An adjustment plate (25) is provided at the position corresponding to the gear shaft (23) at the bottom of the cavity (241). A plurality of teeth (251) are evenly provided on the end face of the adjustment plate (25). The teeth (251) are meshed with the cavity (241). Support ears (243) are provided at both ends of the bottom of the adjustment box (24). A threaded rod (26) is rotatably mounted between the two support ears (243). A slider (252) is provided at the bottom of the adjustment plate (25). The slider (252) penetrates through the adjustment box (24) and extends below it. The end of the slider (252) below the adjustment box (24) is threadedly mounted on the outer wall of the threaded rod (26). The adjustment plate (25) can slide inside the cavity (241) by the rotation of the threaded rod (26).

2. The cooling device of a grate cooler according to claim 1, characterized in that, A through opening (202) is provided at the middle position at the bottom of the cooling chamber (201). The air duct (21) is installed inside the through opening (202). There is a ventilation slot between the two cover plates (22). The ventilation slot is directly above the air duct (21).

3. The cooling device of the grate cooler according to claim 1, characterized in that, A through slot (242) communicating with the cavity (241) is provided at the bottom of the adjustment box (24). The slider (252) penetrates through the through slot (242) and extends below the adjustment box (24).

4. The cooling device of the grate cooler according to claim 3, characterized in that, A threaded groove (253) is formed inside the slider (252). The slider (252) is threadedly mounted on the outer wall of the threaded rod (26) through the threaded groove (253). The slider (252) can slide inside the through slot (242) by the rotation of the threaded rod (26).

5. The cooling device of a grate cooler according to claim 4, wherein, The internal thread directions in two adjacent ones of the thread grooves (253) are opposite to each other.

6. The cooling device of a grate cooler according to claim 1, characterized in that, One end of the threaded rod (26) penetrates through one of the lugs (243) and extends to the outside thereof. And a limit nut (261) is arranged at the end of the threaded rod (26) located outside the lug (243). The limit nut (261) is threadedly mounted on the outer wall of the threaded rod (26) and abuts against the side wall of the lug (243).

7. The cooling device of a grate cooler according to claim 1, wherein, A support plate (27) is arranged at the top of the outer wall of the cooling bin (2). A plurality of fastening bolts (28) are evenly arranged at the bottom of the support plate (27). The fastening bolts (28) penetrate through the support plate (27) and are threadedly mounted at the bottom of the grate cooler (1).

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