A multi-surface cooling auxiliary feeding grate cooler device

Abstract

The present invention discloses a multi-faceted cooling auxiliary feeding grate cooler device, belonging to the technical field of grate coolers, comprising a plurality of side cooling conveying modules, each of which comprises a cooling box, a roller, and a conveyor belt. Rollers are provided at both ends of the cooling box, and the conveyor belt is mounted on the roller and surrounds the cooling box. The conveyor belt is evenly arranged with a plurality of ventilation holes. The cooling box comprises an air chamber and a plurality of air outlet chambers connected to the air chamber. The plurality of air outlet chambers are located on one side of the air chamber and are arranged parallel from top to bottom. The bottom plate of the air outlet chamber is tilted downward, and an air outlet is provided on the side wall of the cooling box near the bottom plate of the air outlet chamber. A cavity for transporting clinker is formed between two adjacent side cooling conveying modules, and a bottom surface cooling conveying mechanism is provided below the cavity. The bottom surface cooling conveying mechanism comprises a grate plate chain and a support plate, and the support plate is provided through the grate plate chain. The support plate is a hollow structure. The present invention has the advantages of simple structure, increased cooling area, improved work efficiency, extended service life, and wide applicability.

Description

Technical Field

[0001] The invention belongs to the technical field of grate coolers, and in particular relates to a multi-surface cooling auxiliary feeding grate cooler device. Background Art

[0002] Grate cooler is an important main equipment in the cement production process. Its main function is to cool and transport cement clinker. The high-temperature cement clinker of a certain thickness fired in the rotary kiln is transported to the grate plate of the grate cooler. The moving grate plate drives the cement clinker on it to move synchronously. A cooling device is installed under the grate plate. The cold air provided by the cooling device passes upward through the grate plate and the material layer, taking away the heat of the cement clinker, so that it gradually cools down in the process of moving from the beginning to the end of the grate plate. The clinker can be cooled from 1300-1400℃ to about 100℃ within a few minutes.

[0003] Nowadays, the cooling device of most grate coolers is below the clinker, and the cooling quality of the clinker mainly depends on the wind-receiving area of ​​the clinker, the size of the air flow and the thickness of the clinker. When the clinker enters the grate cooler, the grate plate drives the clinker forward while the blower below the grate plate starts to blow cold air into the air chamber. The effective wind-receiving area of ​​the clinker is only the lower bottom surface. When the clinker thickness is large, the cold air encounters greater resistance, the large clinker cannot be cooled inside, and the cooling speed is slow. At high temperatures, the clinker is not cooled in time, and the small clinker particles stick to each other to form lumps, resulting in low cooling efficiency.

[0004] Document No. 202023127170.6 discloses a side-blowing cooling device for a grate cooler. The device comprises a low wall inside the grate cooler and an air collecting box on its outer surface, as well as symmetrically fixed side-blowing nozzles and a manual butterfly valve. Several air ducts combine to form a side-blowing cooling device. This device can increase air flow and reduce the Red River effect. However, the device uses multiple side-blowing nozzles to discharge air, which causes uneven airflow on the side of the clinker and a small air output. This prevents large pieces of clinker from being cooled in time, resulting in low efficiency.

[0005] Document No. 202022982595.9 discloses a side air inlet channel device with a dustproof function, which includes a main box and a filter device, an air inlet pipe arranged on it, an air outlet pipe away from the air inlet pipe, and a suction fan and an air inlet valve arranged on it. The device can effectively filter the air and improve the use effect of the air inlet channel. However, the device does not change the structure of the air inlet channel to effectively utilize wind energy. For example, the wind flow rate and the clinker wind-receiving area are not increased. In addition, the cost of the filter device is high and lacks economy.

[0006] Furthermore, due to the influence of the rotary kiln's rotation, the cement clinker will experience stratification during the firing process. When the fired cement clinker is unloaded onto the grate bed, the fines concentrate on one side of the bed, while the remaining clinker concentrates on the other side as the particle size increases. The clinker particles then follow the movement of the grate plate, covering the entire bed. Although the particle stratification changes during this movement, the longitudinal change is minimal. Because the fines are densely packed on one side and the clinker particles are larger on the other side, transporting the clinker on the side is difficult, preventing it from being transported forward in time with the movement of the grate plate, and easily resulting in waste of cement clinker.

[0007] Document No. 202023075204.1 discloses a crank-connecting rod assembly for a grate cooler. The assembly includes an eccentric crankshaft connected to a drive mechanism, one end of which is connected to a driven shaft. The connections between the eccentric crankshaft and the connecting rod, and between the connecting rod and the driven shaft, are equipped with spherical roller bearings and sealing assemblies. This assembly ensures smooth operation of the grate cooler and improves efficiency. However, this assembly still fails to account for the side transport of clinker, which can easily lead to clinker waste.

[0008] The document with application number 202011561955.6 discloses a push rod type grate cooler pushing device, which includes a box body and an L-shaped support rod, a cross bar and a rotating column installed inside the box body. The rotating column is equipped with a workbench, the rotating shaft of the motor output shaft is connected to the rotating rod, the fixed shaft is equipped with a lever, the lever is connected to the convex rod under the workbench, a cooling chamber is fixed above the box body, and a U-shaped groove plate is installed on the cross bar. This device can greatly ensure the reaction time during the cooling process and thus improve the cooling quality. However, the device does not optimize the transportation of side clinker, and its efficiency is low. Summary of the Invention

[0009] The problem to be solved by the present invention is to provide a multi-surface cooling auxiliary feeding grate cooler device which has a simple structure, increases the cooling area, improves the working efficiency, prolongs the service life and is widely applicable.

[0010] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-sided cooling auxiliary feeding grate cooler device, including several side cooling and conveying modules, each of the side cooling and conveying modules includes a cooling box, a roller and a conveyor belt, rollers are provided at both ends of the cooling box, the conveyor belt is installed on the roller and surrounds the cooling box, and several ventilation holes are evenly arranged on the conveyor belt; the cooling box includes an air chamber and several air outlet chambers connected to the air chamber, the several air outlet chambers are located on one side of the air chamber and are arranged in parallel from top to bottom, the bottom plate of the air outlet chamber is inclined downward, and the side wall of the cooling box is provided with an air outlet near the bottom plate of the air outlet chamber, and a cavity for transporting clinker is formed between two adjacent side cooling and conveying modules, and a bottom cooling and conveying mechanism is provided below the cavity, and the bottom cooling and conveying mechanism includes a grate chain and a support plate, the support plate is arranged through the grate chain, and the support plate is a hollow structure.

[0011] Preferably, a plurality of side cooling conveying modules arranged in parallel can form a plurality of cavities, and when the clinker is conveyed, the side cooling conveying modules provide cold air for cooling. In the width direction, a plurality of side cooling conveying modules can be installed.

[0012] Preferably, the side cooling and conveying module on the outer edge is installed on the support plate, and the side cooling and conveying module on the inner side is connected to the side cooling and conveying module on the outer edge through a connecting rib.

[0013] Preferably, the cross-sectional shape of the air outlet chamber is a parallelogram.

[0014] Preferably, an air inlet is provided on the top of the cooling box, and there are two air inlets.

[0015] Preferably, the roller is mounted on the bearing mounting seat via a bearing.

[0016] Preferably, the grate chain is driven by a sprocket.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] (1) New side cooling and conveying modules are added on both sides above the grate bed to cool the top and sides of the clinker. The device can continuously output a large air flow rate. In addition, the ventilated hollow support plate cools the bottom of the clinker, which can achieve auxiliary conveying and cooling of the three sides of the clinker at the same time, increasing the cooling area, improving the cooling efficiency, and reducing the length of the grate bed. The side cooling and conveying modules have air outflow in the height direction, so that the clinker can be cooled in time when it is high temperature, avoiding the small clinker particles sticking to each other and forming blocks, and also avoiding the problem of uneven cooling inside large clinker blocks.

[0019] (2) Side cooling and conveying modules can be appropriately added in the length and width directions to increase the volume, which can effectively improve work efficiency. It can be seen that the present invention can appropriately increase or decrease the number of modules according to the size of the space and work efficiency, and can adapt to the space well.

[0020] (3) The present invention changes the original single-sided clinker transport working mode, and adopts the side conveyor belt rotation motion to drive the clinker forward, and relies on static friction to drive the clinker forward from both sides, thereby reducing the sliding friction between the conveyor belt and the clinker, accelerating the speed of clinker forwarding, reducing the wear of the conveyor belt, reducing the transmission pressure of the grate chain, improving work efficiency, and extending the service life of the conveyor belt.

[0021] (3) Comprehensively improved structure: Compared with existing cooling equipment, the present invention has a simple structure and is lighter in weight, which greatly reduces the space occupied by the equipment and the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples, and the advantages and implementation modes of the present invention will become more apparent. The contents shown in the accompanying drawings are only used to illustrate the present invention and do not constitute any limitation to the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention

[0024] Figure 2 This is the main view of the present invention

[0025] Figure 3 It is a side view of the present invention

[0026] Figure 4 This is a schematic diagram of the structure of the side cooling and conveying module of the present invention

[0027] Figure 5 This is a schematic diagram of the structure of the cooling box of the present invention

[0028] Figure 6 It is a side view of the cooling box of the present invention

[0029] In the picture:

[0030] 1. Cooling box; 2. Bearing mounting seat; 3. Bearing; 4. Roller; 5. Conveyor belt; 6. Ventilation hole; 7. Air chamber; 8. Air outlet chamber; 9. Air outlet; 10. Air inlet; 11. Cavity; 12. Grate chain; 13. Support plate; 14. Connecting rib; 15. Sprocket. DETAILED DESCRIPTION

[0031] like Figures 1 to 6As shown, the present invention provides a multi-faceted cooling auxiliary feeding grate cooler device, including several side cooling and conveying modules, each side cooling and conveying module including a cooling box 1, a roller 4 and a conveyor belt 5, rollers 4 are provided at both ends of the cooling box 1, and the conveyor belt 5 is installed on the roller 4 and surrounded by the cooling box 1, and several ventilation holes 6 are evenly arranged on the conveyor belt 5; the cooling box 1 includes an air chamber 7 and several air outlet chambers 8 connected to the air chamber 7, and the several air outlet chambers 8 are located on one side of the air chamber 7 and are arranged in parallel from top to bottom, and the bottom plate of the air outlet chamber 8 is inclined downward, and an air outlet 9 is provided on the side wall of the cooling box 1 near the bottom plate of the air outlet chamber 8, and a cavity 11 for transporting clinker is formed between two adjacent side cooling and conveying modules, and a bottom cooling and conveying mechanism is provided below the cavity 11, and the bottom cooling and conveying mechanism includes a grate chain 12 and a support plate 13, and the support plate 13 is arranged through the grate chain 12, and the support plate 13 is a hollow structure.

[0032] Multiple parallel side cooling conveyor modules form multiple chambers 11. As the clinker is conveyed, the side cooling conveyor modules provide cooling air to reduce its temperature. Multiple side cooling conveyor modules can be installed across the width of the clinker. The outer side cooling conveyor modules are mounted on support plates 13, while the inner side cooling conveyor modules are connected to the outer side cooling conveyor modules via connecting ribs 14.

[0033] The cross-sectional shape of the air outlet chamber 8 is a parallelogram; an air inlet 10 is provided on the top of the cooling box 1, and two air inlets 10 are provided; the drum 4 is mounted on the bearing mounting seat 2 through the bearing 3; the grate chain 12 is driven by the sprocket 15.

[0034] During operation, when the clinker enters the horizontal grate bed of the grate cooler, the grate chain 12 drives the clinker to move forward, and at the same time the side cooling conveying module and the blower start working, that is, the clinker is conveyed on three sides at the same time. The wind passes through the pipes and enters the cooling box 1 and the support plate 13 respectively, and then flows out through the air outlet chamber 8 of the cooling box 1 and the hollow diversion of the support plate 13, and then flows out through the ventilation holes 6 on the conveyor belt 5 and the grate chain 12, thereby cooling the clinker on three sides.

[0035] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A multi-surface cooling auxiliary feeding grate cooler device, characterized in that: The cooling unit is a unit that is configured to cool the cooling medium and the cooling medium, and the cooling unit is a unit that is configured to cool the cooling medium and the cooling medium. The cooling unit is a unit that is configured to cool the cooling medium and the cooling medium, and the cooling unit is a unit that is configured to cool the cooling medium and the cooling medium.

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