Grate cooler rapid cooling bed with built-in pushing mechanism

Abstract

The utility model provides a grate cooler rapid cooling bed with a built-in pushing mechanism, which relates to the field of grate coolers and comprises a step support and a plurality of grate plate layers arranged on the step support from high to low. Mutually laminated parts exist between the grid plate layers which are arranged at high and low positions; the grid plate layers are arranged on the hollowed-out part of the step support and comprise fixed grid plate layers and movable grid plate layers, the movable grid plate layers are arranged between the fixed grid plate layers which are arranged in a high-low mode at intervals, the multiple supporting columns are fixedly connected with the movable grid plate layers, and the bottom ends of the supporting columns are fixedly connected with the movable frame; a piston rod of the hydraulic cylinder is fixedly connected with one side of the movable frame, the piston rod is driven by the hydraulic cylinder to further drive the movable frame, the supporting columns and the movable grate plate layer are driven to move in a reciprocating mode, and materials on the fixed grate plate layer and the movable grate plate layer below the movable grate plate layer are pushed. The device has the beneficial effects that the'snowman 'removing effect is better, the removing process is more energy-saving and easy to control, and later maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the field of grate coolers, in particular to a grate cooler rapid cooling bed with a built-in material pushing mechanism. Background Art

[0002] In new dry-process cement production lines, the grate cooler is a core component of the firing system, serving as a thermal process for heat recovery from the kiln's clinker. The mainstream grate coolers currently on the market can be categorized by clinker transport method, including walking grate coolers, pusher-type grate coolers, and pendulum-type grate coolers. Regardless of their structural form, all grate coolers utilize a grate bed or pusher rods as the clinker conveyor, transporting the clinker from the quench bed at the front to the grate bed at the rear. Air exchanges heat with the high-temperature clinker, gradually cooling it.

[0003] In actual production, clinker accumulates on the sloped quench bed within the grate cooler during feeding, forming a "snowman" (a type of pile) that cannot be removed. The pile grows taller and taller, and in severe cases, can block the kiln entrance, preventing the removal of material from the kiln and seriously impacting cement production. To address this "snowman" problem, air cannons and external snowman pushers are commonly used. Air cannons are positioned around the quench bed, using instantaneous bursts of compressed air to bombard the "snowman," knocking it down or removing its foundation. While air cannons introduce a certain amount of cold air, lowering the secondary air temperature, they are unable to remove larger snowman formations that have already formed. External snowman pushers are located on the outside of the grate cooler's front housing and use the reciprocating motion of pusher plates to remove the snowman from the grate cooler's slope. The external snowman pusher can effectively remove "snowmen" from the quenching bed, but it also has certain shortcomings during use. Because the external snowman pusher is placed outside the grate cooler housing, a hole must be opened in the grate cooler housing to facilitate the passage of the pusher plate. However, the sealing device here cannot be effectively maintained. As the number of operations increases, the seal deteriorates sharply. Not only can cold air easily enter through this hole, lowering the secondary air temperature, affecting the stable operation of the system and increasing heat consumption, but the internal material is also prone to leakage, deteriorating the surrounding environment and increasing manual cleaning costs. To solve the current pain point of removing "snowmen" in the industry, this device was specially developed.

[0004] In the early stage, the company jointly developed a quenching bed structure in a grate cooler with other companies. The application number is: 2024206944684. This application changes the overall structure of the quenching bed and sets up multiple movable beams to drive the upper grate plate layer to move back and forth to push down the snowman, thus solving the pain point of removing "snowmen" in the industry. We can remove the snowman without opening holes in the grate cooler, ensuring the sealing inside the grate cooler. Since no external air is introduced, the cleaning process ensures the stable operation of the system and no material leakage.

[0005] At present, multiple gaps are driven by multiple driving devices to move the moving beam and the grate plate layer above them. Specifically, "the fixed beam includes several full-length beams fixedly connected to the step plate and several non-full-length beams. Several non-full-length beams have at least one gap in the length direction. A moving beam is provided at the gap position, and the driving device drives the moving beam and the grate plate layer above it to move back and forth along the slope direction;" During use, it was found that since multiple driving devices are required to drive them separately, the energy consumption is high, and the driving device is "the driver drives the driving shaft, bearings, and eccentric wheel to move. The eccentric wheel drives the moving beam and the grate plate layer above it to move back and forth along the guide shaft, pushing the material on the slope to achieve the effect of pushing a snowman;" Therefore, the movement trajectory of the eccentric wheel is limited. Once the setting is completed, it cannot be adjusted. Therefore, the activity distance cannot be adjusted arbitrarily according to needs during use. The fixed activity distance can only be set at the beginning. There are a total of six pushing devices, and the pushing distance is limited. Therefore, we have re-developed a grate cooler rapid cooling bed with a built-in pushing mechanism to solve the above problems. Summary of the Invention

[0006] The utility model aims to provide a grate cooler quenching bed with a built-in pushing mechanism, which has better "snowman" clearing effect, is more energy-saving in the clearing process, and is easy to control.

[0007] The technical solution of the utility model is:

[0008] A grate cooler quenching bed with a built-in pushing mechanism comprises a stepped bracket, a plurality of multi-layered grate plate layers arranged on the stepped bracket from high to low; the grate plate layers are formed by splicing and fixing a plurality of grate plates; there are mutually overlapping parts between the high and low arranged grate plate layers; the stepped bracket is provided with a hollow portion, the grate plate layers are arranged on the hollow portion, and include a fixed grate plate layer and a movable grate plate layer, the two sides of the fixed grate plate layer are fixed on the stepped bracket, and the movable grate plate layers are interlocked. The partition is set between the high and low fixed grate plate layers, the top ends of multiple support columns are fixedly connected to the bottom of all the movable grate plate layers, the bottom ends of the support columns are fixedly connected to the movable frame, the piston rod of the hydraulic cylinder is fixedly connected to one side of the movable frame, and the hydraulic cylinder drives the piston rod to further drive the movable frame, driving the support columns and the movable grate plate layer to move back and forth, pushing the material on the fixed grate plate layer below the movable grate plate layer and on the movable grate plate layer itself.

[0009] The bottom of the movable frame is provided with a plurality of symmetrically arranged pulleys, which slide on the ground or two slide rails to support the movable grate plate layer, the movable frame and the support columns, thereby avoiding the problem of breaking of the connection part between the piston rod and the movable frame; the bottom of each layer of the movable grate plate layer is supported by two support columns;

[0010] Furthermore, a support frame consisting of a plurality of columns and cross bars is fixed at the bottom of the ladder bracket, two cross beams are fixed on the two columns, two slide rails are fixed on the two cross beams, and the pulley slides on the slide rails;

[0011] Furthermore, the travel of the movable grate plate layer is ≤150 mm, that is, after the movable grate plate layer moves, the sum of the distances covered by the lower fixed grate plate layer and covered by the upper fixed grate plate layer is ≤150 mm;

[0012] Furthermore, the number of the stepped supports is eight, and the fixed grate plate layers located on the first, second, fourth, sixth, and eighth layers from high to low are whole grate plate layers, and the grate plate layers on the third, fifth, and seventh stepped layers are part-grate plate layers; the part-grate plate layers include the central movable grate plate layer and the fixed grate plate layers fixed on the stepped supports on both sides of the movable grate plate layer;

[0013] Furthermore, the number of grate plates on the stepped supports increases gradually from high to low; the number of fixed grate plates on each layer of the stepped supports is less than or equal to twelve; and each layer of the movable grate plates includes six grate plates;

[0014] Furthermore, the grate plate adopts a Coanda effect grate plate;

[0015] Furthermore, the inclination of the unloading slope of the grate cooler quenching bed is 10°-11°, that is, the angle formed by the connecting line of all the grate plate layers arranged from high to low and the ground plane is 10°-11°;

[0016] Furthermore, the grate plate layer on the quenching bed of the grate cooler with built-in pushing mechanism is divided into three areas, namely, a central area located in the center and a coarse material side area and a fine material side area located around the central area; the central area includes multiple continuous grate plate layers; divided by the center line of each row of the grate plate layers, the two sides of the center line, except for the central area, are the coarse material side area and the fine material side area respectively;

[0017] Furthermore, the central area is the grate plates located at the fourth to ninth positions on the second to seventh layers. From top to bottom, there are eight grate plates on the first, second, and third layers, ten grate plates on the fourth, fifth, and sixth layers, and twelve grate plates on the lowest two layers, namely the seventh and eighth layers. All the grate plates are placed at the center of the step plates of each layer of the step bracket. The grate plates on both sides of the center line, excluding the center area, are the coarse material side area and the fine material side area respectively.

[0018] The grate cooler quenching bed with a built-in pushing mechanism includes an air supply module, which includes three fans and air ducts. The three fans supply air to the central area, the coarse material side area, and the fine material side area through the air ducts, and the ventilation ports of the three fans are respectively arranged at the bottom of the three areas;

[0019] The advantages and positive effects of the utility model are:

[0020] This application uses support columns as the support for the mobile grate plate layer, and is fixedly connected to all support columns through a "Kuang-shaped" movable frame. Two pulleys are set at the bottom of the movable frame as support. The piston rod is driven by a hydraulic cylinder to further drive the movable frame to move back and forth, further driving the mobile grate plate layer to push the material under the mobile grate plate layer and the mobile grate plate layer itself to achieve the effect of pushing the snowman. It can be driven by a hydraulic cylinder, so this application is simpler to control, more energy-efficient, lower in cost, and more convenient for later maintenance. The movable stroke of the mobile grate plate layer is controlled by adjusting the movable stroke of the hydraulic cylinder, so the movable distance can be adjusted; the frequency of pushing the snowman is further controlled by setting the hydraulic cylinder parameters to control the reciprocating frequency of the hydraulic cylinder.

[0021] The stroke of the movable grate plate layer is ≤150mm, that is, after the movable grate plate layer moves, the sum of the distance covered by the lower fixed grate plate layer and the distance covered by the upper fixed grate plate layer is ≤150mm, so the movable distance is wider and the pushing effect is better.

[0022] The fixed grate layers are securely fastened to the stepped brackets at both ends with bolts and nuts. The stepped brackets at the bottom of the fixed grate layers feature a hollow section. Each movable grate layer is supported by two support columns at the bottom, with the remaining hollow section allowing for fan cooling from below. All grate plates utilize a Coanda effect, resulting in more efficient quenching, longer heat exchange time, lower wind resistance, a longer service life, and easier replacement of spare parts.

[0023] The central area is the grate plates located at the fourth to ninth positions on the second to seventh rows of steps. From top to bottom, there are eight grate plates on the first, second and third layers, ten grate plates on the fourth, fifth and sixth layers, and twelve grate plates on the lowest two layers, namely the seventh and eighth layers. All grate plates are placed in the center of the step plates of each layer of step brackets. The center line between the seventh and eighth grate plates in the twelve grate plates on the lowest layer is divided. The grate plates on both sides of the center line except the center area are the coarse material side area and the fine material side area respectively. The above structure with the number of grate plates gradually increasing from high to low is more in line with the current material connection situation, thereby avoiding the waste and high energy consumption caused by arranging grate plates in redundant areas.

[0024] This application divides the material into a central area, a coarse material side area, and a fine material side area. The above settings are in line with the current material discharge rules. Only the central area will pile up snowmen, so this application does not cause energy waste problems.

[0025] The unloading slope of the grate cooler quenching bed has an inclination of 10°-11°, that is, the angle formed by the connecting line of all the grate plate layers arranged from high to low and the ground plane is 10°-11°, thereby reducing the vertical sealing height and improving the storage capacity.

[0026] Three fans are used to supply air to the center area, coarse material side area and fine material side area respectively, so the air supply is more uniform and the cooling efficiency of the material is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the grate cooler quenching bed with built-in pushing mechanism.

[0028] Figure 2 Schematic diagram of fixed grate plate layer and movable grate plate layer, where the three thick black frames are movable grate plate layers, and the rest are fixed grate plate layers.

[0029] Figure 3 Schematic diagram of the connection between the movable grate plate layer and the support column, movable frame and hydraulic cylinder.

[0030] Figure 4 Schematic diagram of the left side view of the quenching bed of the grate cooler with built-in pushing mechanism.

[0031] Figure 5 Schematic diagram of the rear view of the quenching bed of a grate cooler with a built-in pusher mechanism.

[0032] Figure 6 Schematic diagram of a single fixed grate plate.

[0033] Figure 7 Schematic diagram of a Coanda effect grate.

[0034] Figure 8 Schematic diagram of the division of the three areas: the central area, the coarse material side area, and the fine material side area. The area within the thick black solid line is the central area, and the two sides of the central line are the coarse material side area and the fine material side respectively.

[0035] Figure 9 The structural diagram of the three areas: central area, coarse material side area, and fine material side area.

[0036] 1. Stepped support 2. Fixed grate plate layer 3. Movable grate plate layer

[0037] 5. Support column 6. Movable frame 7. Hydraulic cylinder

[0038] 8. Piston rod 9. Pulley 10. Center area

[0039] 11. Coarse material side area 12. Fine material side area 14. Column

[0040] 15, step layer 16, slide rail 17, beam

[0041] 18. Hollow part DETAILED DESCRIPTION

[0042] Example 1:

[0043] like Figure 1 The grate cooler quenching bed with a built-in pushing mechanism shown in the figure comprises a step bracket 1, eight layers of multi-layer grate plates arranged on the step bracket 1 in descending order; the grate plate layer is formed by splicing and fixing a plurality of grate plates; Figure 1 There is a mutual overlapping portion between the high and low set grate plate layers, that is, the layer is placed on the step layer 15 of the step bracket 1; Figure 5 As shown in FIG. 1 , when viewed from the bottom of the device, the step bracket 1 is provided with a hollow portion 18, and the grate plate layer is provided on the hollow portion 18. Figure 2 As shown, from high to low, the number of grate plates on the first, second and third grate plates is eight, the number of grate plates on the fourth, fifth and sixth layers is ten, and the number of grate plates on the lowest two layers, namely the seventh and eighth layers, is twelve. All of the grate plates are placed at the center of each layer of step plates. Among the grate plates on the step layers 15 of the eight step brackets 1, the fixed grate plates 2 on the first, second, fourth, sixth and eighth step layers 15 from high to low are whole grate plates, and the grate plates on the third, fifth and seventh step layers 15 are non-whole grate plates. Among the non-whole grate plates, the eight movable grate plates 3 in the center that can move back and forth also include fixed grate plates 2 fixed on the step bracket 1 on both sides of the movable grate plates 3. Figure 2 In the figure, the three thick black frames are movable grate plate layers 3, and the rest are fixed grate plate layers 2.

[0044] In order to facilitate the viewing of the connection between the grate plate layer and the hydraulic cylinder 7, Figure 3 Only the grate plate layer, support column 5, movable frame 6, hydraulic cylinder 7 are retained, and the rest are deleted, such as Figure 3 As shown, the top ends of the plurality of support columns 5 are fixedly connected to the bottoms of all the movable grate plates 3, and the bottom ends of the support columns 5 are fixedly connected to the movable frame 6. The piston rod 8 of the hydraulic cylinder 7 is fixedly connected to one side of the movable frame 6. The bottom of the movable frame 6 is provided with four symmetrically arranged pulleys 9. Figure 4 Figure 5As shown, a support frame consisting of a plurality of columns 14 and cross bars is fixed to the bottom of the step bracket 1, two cross beams 17 are fixed on the two columns 14, and the two slide rails 16 are fixed on the two cross beams 17. Further, the four pulleys 9 slide on the two slide rails 16 respectively; as the support of the movable grate plate layer 3, the movable frame 6 and the support column 5, the problem of breaking of the connection part between the piston rod 8 and the movable frame 6 is avoided; the bottom of each layer of the movable grate plate layer 3 is supported by two support columns 5;

[0045] The process of eliminating the snowman in this application is as follows: the hydraulic cylinder 7 drives the piston rod 8 to further drive the movable frame 6, driving the support column 5 and the movable grate layer 3 to move back and forth. Since there are mutually overlapping parts between the grate layers, the stacked structure pushes the materials on the fixed grate layer 2 below the movable grate layer 3 and on the movable grate layer 3 itself, thereby achieving the effect of eliminating the snowman.

[0046] Further, if Figure 3 As shown, the travel of the movable grate plate layer 3 is 150 mm, that is, after the movable grate plate layer 3 moves, the sum of the distances covered by the lower fixed grate plate layer 2 and covered by the upper fixed grate plate layer 2 is 150 mm;

[0047] like Figure 4 As shown, the unloading slope of the grate cooler quenching bed has an inclination of 10.81°, that is, the angle formed by the connecting line of all the grate plate layers arranged from high to low and the ground plane is 10.81°, thereby reducing the vertical sealing height and improving the storage capacity.

[0048] like Figure 8 、 Figure 9 As shown, the grate plate layer on the quenching bed of the grate cooler with built-in pushing mechanism is divided into 3 areas. The above setting is in line with the current material unloading rules. Only the central area 10 will accumulate snowmen, so this application does not cause energy waste problems. They are the central area 10 located in the center and the coarse material side area 11 and the fine material side area 12 located around the central area 10; the central area 10 includes a continuous multi-layer grate plate layer; divided by the center line of each row of the grate plate layer, that is, divided from the center line between the seventh and eighth grate plates in the lowest layer of twelve grate plates, and the two sides of the center line are the coarse material side area 11 and the fine material side area 12 except the central area 10; as shown Figure 8As shown, the central area 10 is the grate plates located at the fourth to ninth positions on the second to seventh rows of stepped layers 15. From top to bottom, there are eight grate plates on the first, second, and third layers, ten grate plates on the fourth, fifth, and sixth layers, and twelve grate plates on the lowest two layers, namely the seventh and eighth layers. All the grate plate layers are placed at the center of each layer of stepped plates. The grate plates on both sides of the center line, except for the central area 10, are the coarse material side area 11 and the fine material side area 12 respectively.

[0049] The grate cooler quenching bed with built-in pushing mechanism includes an air supply module, which includes three fans and air ducts. The vents of the three fans are respectively arranged at the bottom of the three zones. The three fans respectively supply air to the central zone 10, the coarse material side zone 11, and the fine material side zone 12 through the air ducts. Since the grate plate layer is arranged in the hollow part 18, the wind can blow the material on the grate plate layer through the grate plate layer, such as Figure 6 、 Figure 7 As shown, the grate plate adopts a Coanda effect grate plate; the Coanda effect grate plate is purchased on the market and will not be described in detail here. The Coanda effect grate plate has a more efficient quenching effect, a longer heat exchange time, lower wind resistance, and a longer service life. It is more convenient to replace spare parts. Since air is supplied separately by three fans, the air supply is more uniform and the cooling efficiency of the material is improved.

[0050] This application uses support columns 5 as the support for the mobile grate plate layer 3, and is fixedly connected to all support columns 5 through a "Kuang-shaped" movable frame 6. Two pulleys 9 are set at the bottom of the movable frame 6 as support. The piston rod 8 is driven by a hydraulic cylinder 7 to further drive the movable frame 6 to move back and forth, further driving the mobile grate plate layer 3 to push the material on the lower layer of the mobile grate plate layer 3 and the mobile grate plate layer 3 itself to achieve the effect of pushing the snowman. It can be driven by a hydraulic cylinder 7, so this application is simpler to control, more energy-efficient, lower in cost, and more convenient for later maintenance. By adjusting the movable stroke of the hydraulic cylinder 7, the movable stroke of the mobile grate plate layer 3 is controlled, so the movable distance can be adjusted; by setting the parameters of the hydraulic cylinder 7, the reciprocating frequency of the hydraulic cylinder 7 is controlled to further control the frequency of pushing the snowman.

[0051] Example 2:

[0052] A quenching bed of a grate cooler with a built-in pushing mechanism has most of the same structures as Example 1, except that it includes a stepped bracket 1 and 9 layers of multi-layer grate plate layers arranged on the stepped bracket 1 in sequence from high to low; the grate plate layers are composed of several grate plates spliced ​​and fixed; from high to low, the number of grate plates on the first, second and third layers is eight, the number of grate plates on the fourth, fifth and sixth layers is ten, and the number of grate plates on the lowest two layers, namely the seventh, eighth and ninth layers, is twelve. From high to low, the second, fourth, sixth and eighth layers are non-whole grate plates, and among the non-whole grate plates, the middle six are movable grate plate layers 3, and the fixed grate plate layers 2 are on both sides of the movable grate plate layer 3. The first, third, fifth, seventh and ninth layers are whole grate plates.

[0053] In this embodiment, the movable grate plate layer 3 and the fixed grate plate layer 2 are arranged crosswise, so the material is pushed over a wider range and the snowman removal effect is better.

[0054] Example 3:

[0055] A grate cooler quenching bed with a built-in pushing mechanism has most of the same structure as Example 1, except that: the fixed grate plate layers 2 located on the first, second, fourth, sixth and eighth step layers 15 from high to low are whole grate plate layers, and the grate plate layers on the third, fifth and seventh step layers 15 are also whole grate plate layers, but the grate plate layers on the third, fifth and seventh step layers 15 are all movable grate plate layers 3, and further, the entire grate plate layers on the third, fifth and seventh step layers 15 can be moved. Through this application, the material range is pushed wider and the snowman removal effect is better.

[0056] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A grate cooler quenching bed with a built-in pushing mechanism, comprising a stepped support and a plurality of grate plate layers arranged on the stepped support from high to low; the grate plate layers are formed by splicing and fixing a plurality of grate plates; there are overlapping portions between the high and low grate plate layers; and the characteristics are: The step bracket is provided with a hollow portion, and the grate plate layer is arranged on the hollow portion, including a fixed grate plate layer and a movable grate plate layer. Both sides of the fixed grate plate layer are fixed on the step bracket, and the movable grate plate layer is spaced between the high and low fixed grate plate layers. The top ends of multiple support columns are respectively fixedly connected to the bottoms of all the movable grate plate layers, and the bottom ends of the support columns are fixedly connected to the movable frame. The piston rod of the hydraulic cylinder is fixedly connected to one side of the movable frame. The piston rod is driven by the hydraulic cylinder to further drive the movable frame, thereby driving the support columns and the movable grate plate layer to move back and forth, pushing the material on the fixed grate plate layer below the movable grate plate layer and on the movable grate plate layer itself.

2. The grate cooler quenching bed with a built-in pushing mechanism according to claim 1, characterized in that: The bottom of the movable frame is provided with a plurality of symmetrically arranged pulleys, which slide on the ground or on two slide rails.

3. The grate cooler quenching bed with a built-in pushing mechanism according to claim 2, characterized in that: A support frame consisting of a plurality of columns and cross bars is fixed at the bottom of the ladder bracket, two cross beams are fixed on the two columns, two slide rails are fixed on the two cross beams, and the pulleys slide on the slide rails.

4. The grate cooler quenching bed with a built-in pushing mechanism according to claim 3, characterized in that: The travel of the movable grate plate layer is ≤150 mm, that is, after the movable grate plate layer moves, the sum of the distances covered by the lower fixed grate plate layer and covered by the upper fixed grate plate layer is ≤150 mm.

5. A grate cooler quenching bed with a built-in pushing mechanism according to any one of claims 1 to 4, characterized in that: The number of the stepped supports is eight, and the fixed grate plate layers located on the first, second, fourth, sixth and eighth layers from high to low are whole grate plate layers, and the grate plate layers on the third, fifth and seventh stepped layers are non-whole grate plate layers; the non-whole grate plate layers include the central movable grate plate layer and the fixed grate plate layers fixed on the stepped supports on both sides of the movable grate plate layer.

6. The grate cooler quenching bed with a built-in pushing mechanism according to claim 5, characterized in that: The number of grate plates on the stepped bracket increases gradually from high to low.

7. A grate cooler quenching bed with a built-in pushing mechanism according to any one of claims 1, 2, 3, 4, or 6, characterized in that: The grate plate adopts a Coanda effect grate plate.

8. The grate cooler quenching bed with a built-in pushing mechanism according to claim 7, characterized in that: The unloading slope of the grate cooler quenching bed has an inclination of 10°-11°, that is, the angle formed by the connecting line of all the grate plate layers arranged from high to low and the ground plane is 10°-11°.

9. The grate cooler quenching bed with a built-in pushing mechanism according to claim 8, characterized in that: The grate plate layer on the quenching bed of the grate cooler with built-in pushing mechanism is divided into three areas, namely the central area located in the center and the coarse material side area and the fine material side area located around the central area; the central area includes multiple continuous grate plate layers; the center line of each row of the grate plate layers is divided, and the two sides of the center line, except the central area, are the coarse material side area and the fine material side area respectively; The central area is the grate plates located at the fourth to ninth positions on the second to seventh layers. From top to bottom, there are eight grate plates on the first, second and third layers, ten grate plates on the fourth, fifth and sixth layers, and twelve grate plates on the lowest two layers, namely the seventh and eighth layers. All the grate plates are placed at the center position of the step plates of each layer of the step bracket. The center line from the seventh to the eighth grate plates in the twelve grate plates on the lowest layer is divided. The grate plates on both sides of the center line except the center area are the coarse material side area and the fine material side area respectively.

10. The grate cooler quenching bed with a built-in pushing mechanism according to claim 9, characterized in that: The grate cooler quenching bed with a built-in pushing mechanism includes an air supply module, which includes three fans and air ducts. The three fans supply air to the central area, coarse material side area, and fine material side area through the air ducts respectively, and the ventilation ports of the three fans are respectively arranged at the bottom of the three areas.

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