A continuous feeding grate cooler

Abstract

The present invention discloses a continuous feeding grate cooler, which belongs to the technical field of grate coolers and includes a frame, a grate bed is installed on the frame, the grate bed includes a plurality of hinged grate plate groups, the plurality of grate plate groups form a closed grate plate chain, the closed grate plate chain is provided with a support plate on the feeding side, a plurality of air valve air chamber modules are installed below the support plate, a plurality of side cooling conveying modules are installed above the support plate, the side cooling conveying modules are located on both sides of the grate bed, and the side cooling conveying modules and the grate bed on both sides surround and form a cavity for transporting clinker. The present invention adopts a sprocket to drive the grate plate to rotate, and the grate plate drives the clinker forward, thereby avoiding sliding friction between the grate plate and the clinker, reducing the wear of the grate plate, and extending the service life of the grate plate. A new cooling box is added above the grate bed, which can realize the simultaneous cooling of three sides of the clinker, increase the cooling area, improve the cooling efficiency, and reduce the length of the grate bed. In addition, cooling boxes and conveyor belts are appropriately added in the width direction to achieve uniform cooling across the width.

Description

Technical Field

[0001] The invention belongs to the technical field of grate coolers, and in particular relates to a continuous feeding grate cooler. Background Art

[0002] The grate cooler is a crucial component of cement production, primarily used to cool and transport cement clinker. After the clinker enters the cooler from the kiln, it forms a thick layer on the grate plates. Cold air is then blown in perpendicularly through the layer of material moving on the grate bed, rapidly cooling the clinker, reducing it from 1300-1400°C to below 100°C within minutes.

[0003] The working principle of current grate coolers is to use a step-by-step method to push the clinker forward: after the clinker enters the grate cooler, the grate plates push forward for a certain distance, then, using inertia, accelerate and retreat, causing the clinker to advance and the grate plates to return to their original position. Under this working principle, there is significant friction between the grate plates and the clinker, which can easily cause wear on the grate plates.

[0004] Document No. 201310178115.5 discloses a material pushing device for a grate cooler. The device comprises a connector and several parallel push rods mounted on the connector. The connector and push rods together form a fishbone-shaped push rod. This device reduces drag and reduces material drag. However, the device experiences significant sliding friction with the hot clinker, and the large friction area results in wear and tear, resulting in a short lifespan.

[0005] Document No. 201822108153.4 discloses a pusher device for a grate cooler. The device comprises slide rails spaced apart on a grate plate, a cavity within the slide rails, a chute on the top surface of the cavity, and a pusher mechanism. This device can quickly spread cement clinker flat, preventing accumulation. However, a drawback of this device is its high wear and tear. When pushing cement clinker, friction occurs between the clinker and the device in the opposite direction of motion, and the friction area is large, resulting in significant wear and tear. Summary of the Invention

[0006] The problem to be solved by the present invention is to provide a continuous feeding grate cooler which has a simple structure, increases the cooling area, improves the working efficiency, prolongs the service life and is widely applicable.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a continuous feeding grate cooler, comprising a frame, a grate bed is installed on the frame, the grate bed includes a plurality of hinged grate plate groups, the plurality of grate plate groups form a closed grate plate chain, the closed grate plate chain is driven by a driving device, a support plate is provided on the feeding side of the closed grate plate chain, a plurality of air valve air chamber modules are installed under the support plate, a plurality of side cooling conveying modules are installed above the support plate, the side cooling conveying modules are located on both sides of the grate bed, and the side cooling conveying modules and the grate bed on both sides surround and form a cavity for transporting clinker.

[0008] Preferably, the grate plate group includes a grate plate body I and a grate plate body II, and the grate plate body I and the grate plate body II both include a grate plate ventilation plate and a side plate, and connecting holes are provided at both ends of the side plate. The side plate is arranged on both sides of the bottom of the grate plate ventilation plate, and the side plate includes a side plate I and a side plate II, and the side plate I and the side plate II are staggered and connected.

[0009] Preferably, the driving device is mounted on the side panel of the frame, and the driving device includes a sprocket, which is arranged at both ends of the closed grate chain. The sprocket at one end is connected to the motor through an input shaft, and the output shaft is installed on the sprocket at the other end.

[0010] Preferably, the air chamber and air valve module includes an air chamber, the bottom of the air chamber is connected to the air valve, and the top of the air chamber is equipped with an air chamber ventilation plate.

[0011] Preferably, the side cooling conveying module 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 a number of ventilation holes are evenly arranged on the conveyor belt; the cooling box includes an air inlet chamber and a number of air outlet chambers connected to the air inlet chamber, the several air outlet chambers are located on one side of the air inlet chamber and are arranged in parallel from top to bottom, the bottom plate of the air outlet chamber is inclined downward, and an air outlet is provided on the side wall of the cooling box near the bottom plate of the air outlet chamber.

[0012] Preferably, ventilation bosses are provided on the grate ventilation plate and the air chamber ventilation plate, and the ventilation bosses include ventilation holes, which are connected to the arc-shaped air outlet channel on the top thereof, and the air outlet end of the air outlet channel is located at the lower edge of the ventilation boss.

[0013] Preferably, the ventilation bosses on the grate plate ventilation plate are arranged perpendicular to the conveying direction, and the ventilation bosses on the air chamber ventilation plate are arranged parallel to the conveying direction.

[0014] Preferably, the support plate is a hollow structure.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] (1) The present invention uses a sprocket to drive the grate plate to rotate, and the grate plate drives the clinker forward, thereby avoiding sliding friction between the grate plate and the clinker, reducing the wear of the grate plate, and extending the service life of the grate plate;

[0017] (2) A new cooling box is added above the grate bed, which can realize the cooling of 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; and the cooling box cools the clinker in the height direction, which can make the clinker evenly cooled in the height direction;

[0018] (3) A conveyor belt is provided on the outside of the cooling box. The roller drives the conveyor belt to rotate, and relies on static friction to drive the clinker forward from both sides, which speeds up the clinker forward speed, reduces the transmission pressure of the grate chain, and improves work efficiency;

[0019] (4) If the grate bed is wide, cooling boxes and conveyor belts can be added appropriately in the width direction to increase the chamber, so that the cooling can be uniform across the width;

[0020] (5) The use of electric motors to drive the rotation of various parts avoids the problems of sealing and hydraulic oil pollution of the hydraulic system;

[0021] (6) The present invention has a simple structure and light weight. The frame adopts a steel frame structure, which reduces the overall size and weight, greatly reducing the space occupied by the equipment and the manufacturing cost;

[0022] (7) Each module is composed of several rows and columns of parts. The number of modules can be appropriately increased or decreased according to the size of the space and work efficiency, and it has strong adaptability to space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a structural schematic diagram of the present invention

[0025] Figure 2 This is a cross-sectional view of the present invention

[0026] Figure 3 This is a structural diagram of the grate plate group of the present invention

[0027] Figure 4 This is a structural diagram of the air valve air chamber module of the present invention

[0028] Figure 5 This is a schematic diagram of the structure of the cooling box of the present invention

[0029] Figure 6This is a structural diagram of the ventilation boss of the present invention.

[0030] In the picture:

[0031] 1. Cooling box; 2. Ventilation boss; 3. Roller; 4. Conveyor belt; 5. Support plate; 6. Frame; 7. Frame side panel; 8. Input shaft; 9. Bearing; 10. Bearing seat; 11. Grate body I; 12. Grate body II; 13. Ventilation hole; 14. Sprocket; 15. Output shaft; 16. Air chamber ventilation plate; 17. Air chamber; 18. Air valve; 19. Closed grate chain; 20. Air valve air chamber module; 21. Side cooling conveying module; 22. Container; 23. Grate ventilation plate; 24. Connecting hole; 25. Side panel I; 26. Side panel II; 27. Air inlet chamber; 28. Air outlet chamber; 29. ​​Air outlet; 30. Air outlet end; 31. Air outlet channel. DETAILED DESCRIPTION

[0032] like Figures 1 to 6 As shown, the present invention provides a continuous feeding grate cooler, comprising a frame 6, a grate bed is installed on the frame 6, the grate bed comprises a plurality of hinged grate plate groups, the plurality of grate plate groups form a closed grate plate chain 19, the closed grate plate chain 19 is driven by a driving device, the closed grate plate chain 19 is provided with a support plate 5 on the feeding side, the support plate 5 is a hollow structure supported by a support beam, a plurality of air valve air chamber modules 20 are installed below the support plate 5, a plurality of side cooling conveying modules 21 are installed above the support plate 5, the side cooling conveying modules 21 are located on both sides of the grate bed, and the side cooling conveying modules 21 on both sides and the grate bed surround a cavity 22 for transporting clinker.

[0033] Among them, the grate plate group includes a grate plate body I11 and a grate plate body II12, and the grate plate body I11 and the grate plate body II12 both include a grate plate ventilation plate 23 and a side plate, and connecting holes 24 are provided at both ends of the side plate. The side plates are arranged on both sides of the bottom of the grate plate ventilation plate 23, and the side plates include side plates I25 and side plates II26. The side plates I25 and side plates II26 are staggered and connected. The side plates I25 of the grate plate body I11 are located at the edge of the bottom end of the grate plate ventilation plate 23, and the side plates II26 of the grate plate body II12 are located on the inner side of the bottom end of the grate plate ventilation plate 23.

[0034] Among them, the driving device is installed on the side plate 7 of the frame, and the driving device includes a sprocket 14, which is arranged at both ends of the closed grate chain 10. The sprocket 14 at one end is connected to the motor through the input shaft 8, and the output shaft 15 is installed on the sprocket 14 at the other end. The input shaft 8 and the output shaft 15 are connected to the side plate 7 of the frame through bearings 9 and bearing seats 10.

[0035] The air chamber and air valve module 20 includes an air chamber 17 , the bottom of the air chamber 17 is connected to the air valve 18 , and the top of the air chamber 17 is installed with an air chamber ventilation plate 16 .

[0036] The side cooling conveying module 21 includes a cooling box 1, a roller 3, and a conveyor belt 4. The cooling box 1 is provided with rollers 3 at both ends. The conveyor belt 4 is mounted on the rollers 3 and surrounds the cooling box 1. A motor is mounted above the rollers 3, driving the rollers 3 to rotate and the conveyor belt 4 to advance the clinker. Meanwhile, the cooling box 1 in the middle of the conveyor belt provides cold air for cooling. The conveyor belt 4 is evenly distributed with a number of ventilation holes. The cooling box 1 includes an air inlet chamber 27 and a number of air outlet chambers 28 connected to the air inlet chamber 27. The air outlet chambers 28 are located on one side of the air inlet chamber 27 and are arranged parallel to each other from top to bottom. The bottom plate of the air outlet chambers 28 is tilted downward. An air outlet 29 is provided on the side wall of the cooling box 1 near the bottom plate of the air outlet chamber 28. The cooling box 1 is provided with an air inlet at the top.

[0037] Both the grate ventilation plate 23 and the plenum ventilation plate 16 are provided with ventilation bosses 2. The ventilation bosses 2 include ventilation holes 13, which are connected to the arc-shaped air outlet channel 31 at their tops. The outlet end 30 of the air outlet channel is located at the bottom edge of the ventilation bosses 2. The ventilation bosses 2 on the grate ventilation plate 23 are arranged perpendicular to the conveying direction, while the ventilation bosses 2 on the plenum ventilation plate 16 are arranged parallel to the conveying direction.

[0038] The present invention changes the conveying principle and the working mode, eliminates sliding friction, reduces friction on the grate plate, does not cause wear on the grate plate, and improves service life. The added side cooling conveying module 21 and the conveyor belt rely on static friction on the outside to drive the side of the clinker to be conveyed, which is beneficial to the uniform advancement of the clinker, increases the cooling area, and improves the cooling efficiency and conveying efficiency.

[0039] The present invention can greatly reduce the length of the grate cooler and appropriately increase the width of the grate cooler, thereby greatly improving the working efficiency of the grate cooler. The present invention can appropriately increase the side cooling conveying module 21 in the width direction and appropriately increase or decrease the volume chamber 22 to improve the working efficiency; in the length direction, it can also be appropriately increased or decreased according to the actual cooling effect and space problems, that is, in the width direction, a plurality of grate plate bodies I11 are installed by an axis, a plurality of grate plate bodies II12 are installed on an axis, and bearings are installed at both ends of each axis. In the length direction, the linked grate plate bodies I11 and II12 are alternately installed to form a closed grate chain 19, and the bearings at both ends are installed on the sprocket 14. The grate chain is composed of two staggered grate plates, which are alternately connected in series through the axis, so that the grate chain has good sealing performance and prevents clinker leakage.

[0040] The conveyor belt power unit of this invention uses an electric motor, eliminating the sealing and hydraulic oil contamination issues associated with hydraulic transmission. A chain tensioner maintains the tension of the grate chain. Several air valve and air chamber modules are mounted on the mounting plate. The air valves control the flow of cold air from the bottom, which flows through the air chamber and across the grate, thereby cooling the hot material.

[0041] Working process: When the clinker enters the horizontal grate bed of the grate cooler, the input shaft motor rotates, driving the input shaft 8 to rotate, and transmitting it to the closed grate chain 19 to rotate; the closed grate chain 19 drives the clinker to start moving forward; at the same time, cold air enters the air chamber 17 through the air valve 18, passes through the air chamber ventilation plate 16, and passes through the closed grate chain 19 to cool the clinker; at the same time, the side cooling and conveying module 21 starts to work, and cold air enters the cooling box 1, which will cool the clinker from the side, and the motor drives the roller 3 to rotate, so that the conveyor belt 4 drives the clinker forward; the clinker is cooled and conveyed on three sides at the same time, and the work is realized in a reciprocating cycle.

[0042] 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 continuous feeding grate cooler, characterized by: The grate bed comprises a frame, on which a grate bed is mounted, the grate bed comprises a plurality of hinged grate plate groups, the plurality of grate plate groups forming a closed grate plate chain, the closed grate plate chain being driven by a driving device, a support plate being provided on the feeding side of the closed grate plate chain, a plurality of air valve and air chamber modules being installed below the support plate, a plurality of side cooling and conveying modules being installed above the support plate, the side cooling and conveying modules being located on both sides of the grate bed, the side cooling and conveying modules on both sides and the grate bed enclosing a cavity for conveying clinker; The grate plate group includes a grate plate body I and a grate plate body II, and the grate plate body I and the grate plate body II both include a grate plate ventilation plate and a side plate, and the side plates are provided with connection holes at both ends. The side plates are arranged at both sides of the bottom of the grate plate ventilation plate, and the side plates include side plates I and side plates II, and the side plates I and II are staggered and connected; The air valve air chamber module includes an air chamber, the bottom of which is connected to the air valve, and the top of which is equipped with an air chamber ventilation plate; The side cooling conveying module 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. A number of ventilation holes are evenly arranged on the conveyor belt. The cooling box includes an air inlet chamber and a number of air outlet chambers connected to the air inlet chamber. The several air outlet chambers are located on one side of the air inlet chamber and are arranged in parallel from top to bottom. The bottom plate of the air outlet chamber is inclined downward, and an air outlet is provided on the side wall of the cooling box near the bottom plate of the air outlet chamber. The grate plate ventilation plate and the air chamber ventilation plate are both provided with ventilation bosses, and the ventilation bosses include ventilation holes, which are connected to the arc-shaped air outlet channel at the top thereof, and the air outlet end of the air outlet channel is located at the lower edge of the ventilation bosses.

2. The continuous feeding grate cooler according to claim 1, characterized in that: The driving device is installed on the side plate of the frame and includes sprockets. The sprockets are arranged at both ends of the closed grate chain. The sprocket at one end is connected to the motor through an input shaft, and the output shaft is installed on the sprocket at the other end.

3. The continuous feeding grate cooler according to claim 1, characterized in that: The ventilation protrusions on the grate plate ventilation plate are arranged perpendicular to the conveying direction, and the ventilation protrusions on the air chamber ventilation plate are arranged parallel to the conveying direction.

4. The continuous feeding grate cooler according to claim 1, characterized in that: The support plate is a hollow structure.

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