Wear-resistant grate tile support and grate

Abstract

The present application relates to a kind of waste incineration equipment, in particular to a kind of wear-resistant grate piece support and grate, wherein wear-resistant grate piece support includes first support base plate, first wear plate, second support base plate, second wear plate, multiple connecting pin shafts, the first wear plate is attached on the outer side of the first support base plate, the upper edge of the first wear plate is flush with the upper edge of the first support base plate, the first wear plate is detachably connected with the first support base plate, the second wear plate is attached on the outer side of the second support base plate, the upper edge of the second wear plate is flush with the upper edge of the second support base plate, the second wear plate is detachably connected with the second support base plate, and the multiple connecting pin shafts are connected between the first support base plate and the second support base plate.The wear-resistant grate piece support of the present application easy-wearing position can be replaced, spare part cost is lower, and replacement workload is smaller.

Description

Technical Field

[0001] This invention relates to a waste incineration device, and more particularly to a wear-resistant grate support and grate. Background Technology

[0002] In a mechanical reciprocating forward-pushing grate, the grate support brackets are the basic supporting units for the grate bars. To ensure that the waste to be incinerated and the slag produced after combustion do not fall through the gaps in the grate support surface during grate movement, the gaps between adjacent grate support brackets are almost zero. The grate support brackets are fixed to the moving and stationary grate beams. During the reciprocating motion of the moving grate beams, the grate support brackets with zero gaps rub against each other, causing wear on the side sealing surfaces where the grate support brackets contact each other. This leads to an increased slag leakage rate and, in severe cases, blockage of the ash and slag conveying system under the furnace. Therefore, grate support brackets need to be replaced when they are severely worn. In some cases, to maintain the overall installation clearance between a grate beam and adjacent grate beams, it is necessary to replace all grate support brackets on an entire grate beam, resulting in high replacement costs and a large workload for spare parts replacement. Summary of the Invention

[0003] The purpose of this invention is to provide a wear-resistant grate support and grate with replaceable easily worn parts, low spare parts cost, and minimal replacement workload.

[0004] To achieve the above objectives, the present invention provides a wear-resistant grate support, comprising a first support base plate, a first wear-resistant sheet, a second support base plate, a second wear-resistant sheet, and a plurality of connecting pins. The first wear-resistant sheet is attached to the outer surface of the first support base plate, the width of the first wear-resistant sheet is one-third of the width of the first support base plate, and the upper edge of the first wear-resistant sheet is flush with the upper edge of the first support base plate. The first wear-resistant sheet is detachably connected to the first support base plate. The second wear-resistant sheet is attached to the outer surface of the second support base plate, the width of the second wear-resistant sheet is one-third of the width of the second support base plate, and the upper edge of the second wear-resistant sheet is flush with the upper edge of the second support base plate. The second wear-resistant sheet is detachably connected to the second support base plate. The plurality of connecting pins connect the first support base plate and the second support base plate, and the first support base plate and the second support base plate are symmetrically arranged.

[0005] Furthermore, both the first support substrate and the second support substrate are cast from chromium-nickel alloy cast steel, both the first wear-resistant sheet and the second wear-resistant sheet are made from rolled sheet, and the connecting pin is made from rolled low-alloy steel bar.

[0006] Furthermore, the distance between the first support substrate and the second support substrate is 200mm-390mm.

[0007] Furthermore, both the first wear-resistant sheet and the second wear-resistant sheet are provided with countersunk holes, which are tapered. Both the first support base plate and the second support base plate are provided with connecting through holes. The first wear-resistant sheet and the first support base plate, and the second wear-resistant sheet and the second support base plate are respectively connected by countersunk screws passing through the connecting through holes and the countersunk holes.

[0008] Furthermore, positioning pin devices are provided between the first wear-resistant sheet and the first support substrate, and between the second wear-resistant sheet and the second support substrate.

[0009] Furthermore, it also includes multiple bracket mounting plates, each with a connecting hole at both ends. One of the connecting holes is a round hole and the other is an oblong hole. The first bracket base plate has multiple first legs, and the second bracket base plate has multiple second legs. The first legs are bent toward one side of the second bracket base plate, and the second legs are bent toward one side of the first bracket base plate. The bracket mounting plates are connected between the first legs and the second legs, and the multiple bracket mounting plates are parallel to each other.

[0010] Furthermore, the design width of the sealing surface at the connection of the two parallel material conveying surfaces of the first wear-resistant sheet is twice the design sealing width at the position of the two parallel material conveying surfaces.

[0011] This invention discloses a grate, comprising multiple wear-resistant grate support brackets as described above, and multiple grate plates. Multiple first support base plates are connected end-to-end, and multiple second support base plates are connected end-to-end. The grate plates are disposed between the first and second support base plates. Each grate plate is arranged sequentially along the length direction of the first and second support base plates. The bottom ends of each grate plate are respectively connected to two connecting pins. The width of the grate plate is adapted to the distance between the first and second support base plates. Spacing is provided between adjacent grate plates, between the grate plate and the first support base plate, and between the grate plate and the second support base plate. The spacing forms a primary air duct. The shape of the spacing is an inverted cone shape with the cross-sectional area continuously increasing from the material contact surface to the air supply side.

[0012] Furthermore, both the top of the first support substrate and the top of the second support substrate are provided with chamfers, and the tops of the first support substrate and the second support substrate are higher than the surface of the grate plate.

[0013] Furthermore, multiple steps are formed on the top of the first support base plates connected end to end along the length direction. Multiple parallel material conveying surfaces are formed between the grate plates and the first and second support base plates. The angle between the material conveying surfaces and the material conveying direction is 12°. The multiple material conveying surfaces decrease sequentially along the material conveying direction. There is an inclined plane between two adjacent material conveying surfaces. The angle between the inclined plane and the material conveying direction is 135°. The grate beam is installed at a 15° angle in the drying section and at a 7.5° angle in the combustion and burnout sections. The angle between the material conveying surfaces and the horizontal plane is 3° in the drying section and -4.5° in the combustion and burnout sections.

[0014] The wear-resistant grate support of the present invention has at least the following beneficial effects.

[0015] This invention relates to a wear-resistant grate support. The width of the first wear-resistant plate is one-third the width of the first support base plate, and the width of the second wear-resistant plate is one-third the width of the second support base plate. Both the first and second wear-resistant plates are detachably connected to the first and second support base plates. During use, the first and second wear-resistant plates of adjacent grate supports rub against each other, while the first and second support base plates do not experience contact wear, primarily serving a supporting function. Therefore, the first and second support base plates and the connecting pins can be reused multiple times, extending the service life of the workpiece and reducing the manufacturing and operating costs of the equipment. When the first and second wear-resistant plates are severely worn, they can be disassembled and replaced. Compared to disassembling and replacing the entire grate support, this method results in lower spare parts costs and less work involved in replacing spare parts.

[0016] The wear-resistant grate support and grate of the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the usage state of the wear-resistant grate support of the present invention;

[0018] Figure 2 This is a schematic diagram of the main structure of the wear-resistant grate support of the present invention;

[0019] Figure 3 This is a side view of the wear-resistant grate support structure of the present invention;

[0020] Figure 4 for Figure 3 Sectional view along axis AA;

[0021] Figure 5 for Figure 3 BB-direction sectional view;

[0022] Figure 6This is a schematic diagram of the main structure of the wear-resistant grate support bracket of the present invention after the grate plates are installed;

[0023] Figure 7 This is a side view of the wear-resistant grate support bracket of the present invention after the grate plates are installed;

[0024] Figure 8 for Figure 6 EE-directed sectional view;

[0025] Figure 9 for Figure 7 FF section view;

[0026] Figure 10 This is a schematic diagram showing the positions of the top of the first support substrate, the top of the first wear-resistant sheet, and the grate sheet.

[0027] Figure 11 This is a schematic diagram of the grate structure of the present invention;

[0028] Figure 12 This is a schematic diagram of the structure of the first wear-resistant sheet. Detailed Implementation

[0029] like Figure 1 As shown, the moving beams and stationary beams of the sequentially moving mechanical grate are spaced apart. During use, to reduce material falling through the gaps between adjacent grate supports, the lateral clamping device 61 or adjusting device 62 of the grate beams causes several rows of moving beams 63 and stationary beams 64 to move or converge towards the center of the incinerator along the transverse direction, dynamically adjusting the gap between adjacent grate supports 60. The grate support 60, as the basic support unit of the grate, not only supports the grate plates 66 installed on it and the transported material, but also withstands the lateral compressive force of the grate supports installed on adjacent grate beams, as well as the mutual friction force on the sealing surfaces 65 between the grate supports generated by the lateral compressive force during the cyclic reciprocating motion of the moving beams 63. Wear and corrosion are minimal on the non-contact working surfaces of the grate support plates during use, while wear is severe on the sealing surfaces, i.e., the contact working surfaces.

[0030] like Figure 2 , Figure 3 , Figure 4As shown, the present invention discloses a wear-resistant grate support, comprising a first support base plate 11, a first wear-resistant plate 12, a second support base plate 21, a second wear-resistant plate 22, and a plurality of connecting pins 31. The first wear-resistant plate 12 is attached to the outer surface of the first support base plate 11, and the width of the first wear-resistant plate 12 is one-third of the width of the first support base plate 11. The upper edge of the first wear-resistant plate 12 is flush with the upper edge of the first support base plate 11, and the first wear-resistant plate 12 is detachably connected to the first support base plate 11. The second wear-resistant plate 22 is attached to the outer surface of the second support base plate 21, and the width of the second wear-resistant plate 22 is one-third of the width of the second support base plate 21. The upper edge of the second wear-resistant plate 22 is flush with the upper edge of the second support base plate 21, and the second wear-resistant plate 22 is detachably connected to the second support base plate 21. The plurality of connecting pins 31 connect the first support base plate 11 and the second support base plate 21, and the first support base plate 11 and the second support base plate 21 are symmetrically arranged. Specifically, as shown... Figure 12 As shown, the first wear-resistant plate 12 and the second wear-resistant plate 22 are both long strip-shaped plates with a thickness of 8mm-20mm. The first wear-resistant plate 12 and the second wear-resistant plate 22 form a sealing strip between two adjacent grate plate supports. The first support base plate 11 and the second support base plate 21 are welded to the connecting pin 31 to form a stable support structure. In the wear-resistant grate plate support of the present invention, since the width of the first wear-resistant plate 12 is one-third of the width of the first support base plate 11, and the width of the second wear-resistant plate 22 is one-third of the width of the second support base plate 21, the first wear-resistant plate 12 and the first support base plate 11 are detachably connected, and the second wear-resistant plate 22 and the second support base plate 21 are detachably connected. The first wear-resistant plate 12 and the second wear-resistant plate 22 cover the easily worn parts of the first support base plate 11 and the second support base plate 21, and the first support base plate 11 and the second support base plate 21 do not experience contact wear, mainly playing a supporting role. During use, the first wear-resistant plate 12 and the second wear-resistant plate 22 of two adjacent grate plate supports rub against each other. The total mass of the first support base plate 11, the second support base plate 21, and the connecting pin 31 accounts for approximately 80%-85% of the entire grate support. The first support base plate 11, the second support base plate 21, and the connecting pin 31 can be recycled multiple times, which not only extends the service life of the workpiece but also reduces the manufacturing and operating costs of the equipment. The total mass of the first wear-resistant plate 12 and the second wear-resistant plate 22 accounts for 15%-20% of the entire grate support, which is a small proportion. When the wear is severe, the first wear-resistant plate 12 and the second wear-resistant plate 22 can be disassembled and replaced. Compared with disassembling and replacing the entire grate support, the cost of spare parts is lower and the workload of replacing spare parts is smaller.

[0031] Optionally, both the first support base plate 11 and the second support base plate 21 are made of low-carbon, high-Cr-Ni alloy cast steel material that is resistant to high temperature, wear, and corrosion, has good mechanical properties, and is weldable. They are integrally formed using precision casting technology. The first wear-resistant plate 12 and the second wear-resistant plate 22 are made of rolled plate. Compared with the cast products commonly used in the waste incinerator grate industry, rolled plate material has fewer defects, more stable mechanical properties, better wear resistance, and a higher surface finish and flatness. After the wear-resistant grate plate brackets are installed, a sealing surface is formed between the first and second wear-resistant plates of two adjacent wear-resistant grate plate brackets. The gap size of the sealing surface is easier to ensure, thereby effectively reducing the entry of larger hard particles into the sealing surface of the grate plate brackets, avoiding blockage accidents in the ash conveying system under the grate, reducing the amount of ash leakage under the grate during the operation of the incinerator, and facilitating the control of the ash loss on ignition rate. The first support base plate 11 and the second support base plate 21 directly contact the high-temperature, corrosive conveyed materials or molten metal, while simultaneously supporting the grate bars and the large amount of conveyed material. They operate in harsh environments, require high support strength, and have irregular structural shapes, thus being made from high-cost casting alloys. The connecting pin 31, located near the bottom of the grate bar support, is less affected by high-temperature radiation due to the material layer covering it, does not directly contact the corrosive conveyed materials or high-temperature molten metal, and is cooled by combustion air, resulting in a relatively better working environment. It is directly processed from high-temperature resistant, high-strength low-alloy steel bars produced by rolling, resulting in lower manufacturing costs. Connecting the higher-cost first support base plate 11 and the second support base plate 12 with the lower-cost connecting pin 31 forms a wear-resistant grate bar support. This structural assembly combines multiple materials, fully utilizing the performance advantages of different materials, ensuring the structural strength of the grate bar support as a grate bar support unit while reducing the overall manufacturing cost of the equipment. Alternatively, the first support base plate 11 and the second support base plate 21 can be cast integrally with the connecting pin 31, simplifying the assembly process.

[0032] Optionally, the distance between the first support base plate 11 and the second support base plate 21 is 200mm-390mm. The space between the first support base plate 11 and the second support base plate 21 is the grate plate installation space. For a moving grate, increasing the width of the grate plate support not only increases the width and weight of the component itself, but also increases the material load it bears, leading to an increase in the strength of the grate moving beam drive system and support system. This requires matching a more powerful incinerator drive system and support system, resulting in an increase in the incinerator manufacturing cost. Setting the distance between the first support base plate 11 and the second support base plate 21 to 200mm-390mm avoids increasing costs due to meeting the strength requirements of the grate moving beam drive system and support system, while also avoiding an excessively small distance that would result in too many grate plate supports, too many easily worn sealing surfaces, and too much replacement work.

[0033] Optionally, both the first wear-resistant plate 12 and the second wear-resistant plate 22 are provided with countersunk holes, which are tapered. Both the first support substrate 11 and the second support substrate 21 are provided with connecting through holes. The first wear-resistant plate 12 is connected to the first support substrate 11, and the second wear-resistant plate 22 is connected to the second support substrate 21 by countersunk screws passing through the connecting through holes and countersunk holes, respectively. Figure 5 As shown, the first wear-resistant plate 12 is connected to the first support base plate 11 by countersunk screws 15. Two or three countersunk screws 15 are provided. The installation position of the countersunk screws 15 avoids the position of the connecting pin 31 and the inner sealing surface of the first support base plate 11 and the second support base plate 21. The countersunk hole 121 on the first wear-resistant plate 12 is set as a cone shape, which matches the standard hexagon countersunk screw, so that the bolt head can be hidden within the thickness range of the first wear-resistant plate 12 and the second wear-resistant plate 22, and avoid the bolt head protruding and affecting the fit of the sealing surface. The countersunk screw and the cone-shaped countersunk hole cooperate to ensure that even if the countersunk screw is also worn when the first wear-resistant plate 12 and the second wear-resistant plate 22 are gradually worn during use, the first wear-resistant plate 12 and the second wear-resistant plate 22 can be prevented from falling off.

[0034] Optionally, such as Figure 3 As shown, positioning pin devices 32 are provided between the first wear-resistant plate 12 and the first support base plate 11, and between the second wear-resistant plate 22 and the second support base plate 21. Specifically, one or two sets of positioning pin devices 32 are provided. Each set of positioning pin devices includes a positioning pin hole and a positioning pin. The positioning pin hole is provided on the first support base plate 11 and the second support base plate 21, and the positioning pin is provided on the first wear-resistant plate 12 and the second wear-resistant plate 22. Alternatively, the positioning pin hole is provided on the first wear-resistant plate 12 and the second wear-resistant plate 22, and the positioning pin is provided on the first support base plate 11 and the second support base plate 21. The positioning pin devices can not only accurately position the installation between the first wear-resistant plate 12 and the first support base plate 11, and between the second wear-resistant plate 22 and the second support base plate 21, but also withstand the lateral shear force on the first wear-resistant plate 12 and the second wear-resistant plate 22, reducing the lateral shear force applied to the fasteners after the fasteners loosen due to the mutual friction of the working surfaces of the first wear-resistant plate 12 and the second wear-resistant plate 22 during operation.

[0035] Optionally, such as Figure 2 , Figure 8 , Figure 9As shown, it also includes multiple bracket mounting plates 41. Each bracket mounting plate 41 has a connecting hole at both ends; one connecting hole is round, and the other is oblong. A first bracket base plate 11 has multiple first legs 13, and a second bracket base plate 21 has multiple second legs 23. The first legs 13 are bent towards one side of the second bracket base plate 21, and the second legs 23 are bent towards one side of the first bracket base plate 11. The bracket mounting plates 41 connect the first legs 13 and the second legs 23, and the multiple bracket mounting plates 41 are parallel to each other. The wear-resistant grate support of this invention is connected to the grate beam of the waste incinerator via the bracket mounting plates 41. Figure 2 , Figure 8 As shown, the first leg 13 and the second leg 23 are respectively provided with connecting holes 131 and 231. The first leg 13 and the second leg 23 are connected to the bracket mounting plate 41 by connecting bolts or other fasteners passing through the connecting holes 131 and 231, respectively. The first leg 13 is bent towards the side of the second bracket base plate 21, and the second leg 23 is bent towards the side of the first bracket base plate 11, so that the connecting bolts or other fasteners are located in the internal space below the grate plate bracket. Due to the material layer covering and the grate plate shielding, the grate plate bracket is less affected by high temperature radiation and does not directly contact corrosive conveyed materials or high temperature molten metal, resulting in a better operating environment, extended service life, and ensuring the stable installation of the grate plate bracket.

[0036] One of the connecting holes on the bracket mounting plate 41 is set as a round hole and the other is set as an oblong hole. This can not only achieve positioning during the installation of the grate bracket, but also reduce the tolerance requirements of the welding and assembly process of the grate bracket, reduce manufacturing costs, and also allow the grate bracket to have space for thermal expansion during use, thereby reducing the deformation of parts caused by internal thermal stress generated when the grate bracket with multiple material combination structure changes from a cold state to a hot state.

[0037] Among the multiple first legs 13 and multiple second legs 23, positioning grooves are provided on the bottom surface of the first leg 13 near the front end and the second leg 23 near the front end, such as... Figure 8 As shown, a positioning groove 232 is provided on the bottom surface of the second leg 23. The positioning grooves on the first leg 13 and the second leg 23 realize the front and rear limit of the grate support during installation, prevent the grate support from being dislodged by external force during operation, and also reduce the influence of the thermal expansion deformation of the grate support on the lateral shear force generated by the fastener during the operation of the incinerator.

[0038] Optionally, in the wear-resistant grate support of the present invention, raised sealing platforms are respectively provided on the first support base plate 11, the second support base plate 21, the first wear-resistant plate 12, and the second wear-resistant plate 22, such as... Figure 11As shown, a sealing platform 121 is provided on the first wear-resistant plate 12. The height of the sealing platform 121 is about 45mm. The material contact surface of the sealing platform 121 forms an angle of about 96° with the material conveying direction, which plays a role in pushing the material. The first support base plate 11, the second support base plate 21, the first wear-resistant plate 12 and the second wear-resistant plate 22 with sealing platforms are installed at the highest position. The sealing platform is used to seal with the previous grate transition plate 18 or the fixed frame. During the movement, a suitable gap is maintained between the sealing platform and the grate transition plate to prevent the material from falling from the gap and the excessive combustion air from entering the furnace through the gap, which would affect the control of the combustion air and the combustion of the material.

[0039] like Figure 12 As shown, the design sealing width at the two parallel material conveying surfaces of the first wear-resistant plate 12 is set to approximately 45 mm, and the sealing width at the connection of the two parallel material conveying surfaces is set to approximately 90 mm. Moving beams and stationary beams are spaced apart inside the incinerator. One of two adjacent wear-resistant grate supports is installed on the stationary beam, and the other on the moving beam. The adjacent wear-resistant grate supports are parallel to each other horizontally. In the front-to-back direction, i.e., the front-to-back direction of material transport, the connection surfaces of the adjacent wear-resistant grate supports are staggered at the steps of each parallel material conveying surface to prevent jamming during grate beam movement. During operation, the grate supports require adjustment via grate beam clamping or adjusting devices due to continuous wear on their sealing surfaces. This allows the grate supports to slowly move laterally towards the center of the incinerator or converge. The incineration process for municipal solid waste is highly complex, and the wear on the sealing surfaces of each grate support is not uniform. If the connecting surfaces of adjacent wear-resistant grate supports are arranged symmetrically, misalignment of the sealing surfaces at the front-to-back connection points can occur, leading to sealing failure, accelerated wear, and even jamming of the grate beam, resulting in a shutdown. This phenomenon is effectively avoided when the connecting surfaces of two adjacent wear-resistant grate supports are staggered in the front-to-back direction. The grate beam reciprocates along a certain trajectory under the action of the drive shaft. Due to machining and installation errors, it is difficult to ensure that the left and right sides of the grate bracket are perfectly parallel when installed and used on the same grate beam. The wear of the sealing surface of the grate bracket is more obvious at each step connection, mainly in a "shuttle shape". The sealing width of the replaceable wear-resistant plate at the connection surface of the grate bracket step is widened, which can effectively ensure the effectiveness of the sealing surface, extend the service life of the workpiece, and reduce operating costs.

[0040] This invention provides a grate, such as Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the furnace includes multiple wear-resistant grate support brackets, multiple grate plates 51, multiple first support base plates 11 connected end-to-end, and multiple second support base plates 21 connected end-to-end. The grate plates 51 are disposed between the first support base plates 11 and the second support base plates 21, and each grate plate 51 is arranged sequentially along the length direction of the first support base plate 11 and the second support base plate 21. The bottom ends of each grate plate 51 are respectively connected to two connecting pins 31. The width of the grate plate 51 is adapted to the distance between the first support base plate 11 and the second support base plate 21. There are gaps between adjacent grate plates 51, between grate plates 51 and the first support base plate 11, and between grate plates 51 and the second support base plate 21. These gaps form a primary air duct 52. Specifically, the shape of the gap is an inverted cone shape with the cross-sectional area continuously increasing from the material contact surface to the air supply side. The grate plates 51 are secured to the connecting pins 31 through grooves or slots provided at the bottom. Each grate plate 51 is longitudinally connected to two adjacent connecting pins 31. Combustion air enters the furnace through the primary air duct, which helps combustion and cools the grate bars 51 and grate bar supports, improving their operating environment and extending their service life.

[0041] Optionally, such as Figure 10 As shown, both the top of the first support base plate 11 and the top of the second support base plate 21 are chamfered, and the tops of the first support base plate 11 and the second support base plate 21 are higher than the upper surface of the grate plate 51. In this embodiment, the tops of the first support base plate 11 and the second support base plate 21 are 2mm higher than the upper surface of the grate plate 51. This ensures a smooth transition between the tops of the first support base plate 11 and the second support base plate 21 and the top surface of the adjacent grate plate, avoiding the accumulation of small ash particles on the material conveying surface, and preventing hard particles from the material accumulated on the surface of the grate plate 51 from entering the sealing surface on the side of the grate plate support during the movement of the grate beam, thus extending the service life of the grate plate support.

[0042] Optionally, such as Figure 11As shown, multiple first support base plates 11 connected end to end form multiple steps along their length, with a step height of approximately 50 mm. Multiple parallel material conveying surfaces 111 are formed between the grate plate 51 and the first and second support base plates 11 and 21. The angle between the material conveying surfaces and the material conveying direction is 12°. These material conveying surfaces decrease sequentially along the material conveying direction. An inclined plane 112 is formed between adjacent material conveying surfaces, and each inclined plane 112 is parallel to the others. The angle between each inclined plane 112 and the material conveying direction is 135°. The grate beam is installed at a 15° angle in the drying section and at a 7.5° angle in the combustion and burnout sections. The angle between the material conveying surfaces 111 and the horizontal plane is 3° in the drying section and -4.5° in the combustion and burnout sections. These two different angles between the material conveying surfaces and the horizontal plane allow municipal solid waste to slide smoothly forward in the drying section and fully participate in combustion in the combustion and burnout sections. The steps formed between the multiple first support base plates 11 can promote the tumbling and agitation of the material during its forward movement, which is beneficial to the complete combustion of the material. The inclined plane formed between every two parallel material conveying surfaces allows the material to slide and tumble smoothly from the higher material conveying surface to the lower material conveying surface when the grate moving beam moves, avoiding the accumulation of material due to the vertical connection between the two material conveying surfaces, which would otherwise lead to incomplete combustion.

[0043] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A wear-resistant grate support, characterized in that, The system includes a first support substrate (11), a first wear-resistant sheet (12), a second support substrate (21), a second wear-resistant sheet (22), and multiple connecting pins (31). The first wear-resistant sheet (12) is attached to the outer surface of the first support substrate (11). The width of the first wear-resistant sheet (12) is one-third of the width of the first support substrate (11). The upper edge of the first wear-resistant sheet (12) is flush with the upper edge of the first support substrate (11). The first wear-resistant sheet (12) is detachably connected to the first support substrate (11). The second wear-resistant sheet... (22) The second wear-resistant sheet (22) is attached to the outer surface of the second support substrate (21). The width of the second wear-resistant sheet (22) is one-third of the width of the second support substrate (21). The upper edge of the second wear-resistant sheet (22) is flush with the upper edge of the second support substrate (21). The second wear-resistant sheet (22) and the second support substrate (21) are detachably connected. The plurality of connecting pins (31) are connected between the first support substrate (11) and the second support substrate (21). The first support substrate (11) and the second support substrate (21) are mutually The first wear-resistant plate (12) and the second wear-resistant plate (22) are symmetrically arranged, and both are provided with countersunk holes. The countersunk holes are conical. Both the first support base plate (11) and the second support base plate (21) are provided with connecting through holes. The first wear-resistant plate (12) and the first support base plate (11) are connected, and the second wear-resistant plate (22) and the second support base plate (21) are connected by countersunk screws passing through the connecting through holes and the countersunk holes, respectively. The system also includes multiple support mounting plates (41), and each of the support mounting plates (41) has a countersunk screw at one end. The connecting holes are of two types: one is a round hole and the other is an oblong hole. The first support base plate (11) is provided with a plurality of first legs (13) and the second support base plate (21) is provided with a plurality of second legs (23). The first legs (13) are bent toward one side of the second support base plate (21) and the second legs (23) are bent toward one side of the first support base plate (11). The support mounting plate (41) is connected between the first legs (13) and the second legs (23). The plurality of support mounting plates (41) are parallel to each other.

2. The wear-resistant grate support according to claim 1, characterized in that, The first support substrate (11) and the second support substrate (21) are both cast from chromium-nickel alloy cast steel. The first wear-resistant sheet (12) and the second wear-resistant sheet (22) are both made from rolled sheet. The connecting pin (31) is made from rolled low alloy steel bar.

3. The wear-resistant grate support according to claim 2, characterized in that, The distance between the first support substrate (11) and the second support substrate (21) is 200mm-390mm.

4. The wear-resistant grate support according to claim 3, characterized in that, Positioning pin devices are provided between the first wear-resistant sheet (12) and the first support substrate (11), and between the second wear-resistant sheet (22) and the second support substrate (21).

5. The wear-resistant grate support according to claim 4, characterized in that, The design width of the sealing surface at the connection of the two parallel material conveying surfaces of the first wear-resistant sheet (12) is twice the design sealing width at the position of the two parallel material conveying surfaces.

6. A grate, comprising a plurality of wear-resistant grate plate supports as described in any one of claims 1-5, characterized in that, It also includes multiple grate plates (51), multiple first support base plates (11) connected end to end, and multiple second support base plates (21) connected end to end. The grate plates (51) are disposed between the first support base plate (11) and the second support base plate (21). Each grate plate (51) is arranged sequentially along the length direction of the first support base plate (11) and the second support base plate (21). The bottom ends of each grate plate (51) are respectively connected to two connecting pins (31). The width of the grate plate (51) is adapted to the distance between the first support base plate (11) and the second support base plate (21). There are gaps between adjacent grate plates (51), between the grate plate (51) and the first support base plate (11), and between the grate plate (51) and the second support base plate (21). The gaps form a primary air duct. The shape of the gaps is an inverted cone shape with the cross-sectional area continuously increasing from the material contact surface to the air supply side.

7. The grate according to claim 6, characterized in that, The top of the first support substrate (11) and the top of the second support substrate (21) are both provided with chamfers, and the tops of the first support substrate (11) and the second support substrate (21) are higher than the surface of the grate plate (51).

8. The grate according to claim 7, characterized in that, Multiple first support base plates (11) connected end to end form multiple steps along the length direction at the top. Multiple parallel material conveying surfaces (111) are formed between the grate plate (51) and the first support base plate (11) and the second support base plate (21). The angle between the material conveying surface (111) and the material conveying direction is 12°. The multiple material conveying surfaces decrease sequentially along the material conveying direction. There is an inclined plane (112) between two adjacent material conveying surfaces. The angle between the inclined plane (112) and the material conveying direction is 135°. The grate beam is installed at a 15° angle in the drying section and at a 7.5° angle in the combustion section and the burnout section. The angle between the material conveying surface (111) and the horizontal plane is 3° in the drying section and -4.5° in the combustion section and the burnout section.

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