Fire grate

Abstract

The utility model relates to the technical field of solid waste treatment fire grates, and provides a fire grate which comprises a furnace shaft, a plurality of fire bars and a plurality of fire grate segments, shaft penetrating holes are formed in the fire grate segments, and the furnace shaft is connected with the shaft penetrating holes in a nested mode; and the plurality of fire bars are connected with the plurality of fire grate segments. According to the fire grate, the furnace shaft and the fire grate segments are connected in the embedded mode, the area of the connecting portion of the furnace shaft and the fire grate segments is increased, connection is more stable, and the connecting portion of the furnace shaft and the fire grate segments can be prevented from being damaged due to stress; moreover, the solid waste is jointly supported by the multiple fire bars, meanwhile, the materials are turned over and conveyed downwards, airflow in the upper space and the lower space can be controllably circulated through gaps between the fire bars, the reaction effect of the materials can be improved, and the organization level of the material flow and the airflow can be improved; and in addition, the solid waste is jointly supported by the multiple fire bars, the contact area of the fire bars and the solid waste is reduced, and the solid waste can be prevented from adhering to the fire grate in the treatment process.

Description

Technical Field

[0001] The present application relates to the technical field of grate for solid waste treatment, and particularly relates to a grate. Background Art

[0002] In the field of solid waste treatment, a grate is a widely used structural component. The current grate mainly consists of reciprocating grate plates and a grate shaft, and is used in the processes of combustion, drying, thermal decomposition, and gasification decomposition of solid waste. The reciprocating grate plates are generally clamped on the grate shaft, and the reciprocating grate plates receive the solid waste to be treated for treatment; that is, the supporting force of the reciprocating grate plates on the solid waste is provided by the clamped connection part with the grate shaft. The clamped connection part is subjected to a large pressure and is in a high-temperature treatment environment, so it is easy to deform, resulting in damage to the grate.

[0003] Moreover, the reciprocating grate plates are a whole piece and are in direct contact with the solid waste, with a large contact area. During the treatment process, due to the high temperature, the solid waste is easy to stick to the reciprocating grate plates and is difficult to remove, which hinders the progress of the next treatment process.

[0004] Therefore, the existing grate has problems that the connection part between the grate plate and the grate shaft is subjected to a large force and is easy to be damaged, and the solid waste is easy to stick to the grate plate during the treatment process. Utility Model Content

[0005] In view of the above deficiencies of the prior art, the purpose of the present application is to provide a grate plate, aiming to solve the problems that the connection part between the existing grate plate and the grate shaft is subjected to a large force and is easy to be damaged, and the solid waste is easy to stick to the grate plate during the treatment process.

[0006] The technical solution adopted by the present application to solve the technical problems is as follows: providing a grate, including a grate shaft, a plurality of grate bars, and a plurality of grate plates. Through holes for the shaft are provided on the plurality of grate plates, and the grate shaft is nestedly connected with the through holes for the shaft; the plurality of grate bars are all connected with the plurality of grate plates.

[0007] Optionally, the plurality of grate plates are each composed of at least one of a circular block, an elliptical block, a triangular block, a square block, a polygonal block, and a wing block, or the plurality of grate plates are each composed of a plurality of wing blocks; the widths of the plurality of wing blocks gradually decrease or increase from one end to the other end.

[0008] Optionally, a plurality of connection holes are provided on the plurality of grate plates; the grate bars are fixedly connected with the grate plates through the connection holes.

[0009] Optionally, the plurality of wing blocks include a first wing block, a second wing block, and / or a third wing block, and / or a fourth wing block; the first wing block and the second wing block, and / or the third wing block, and / or the fourth wing block are connected to each other.

[0010] Optionally, when several of the wing blocks include a first wing block, a second wing block, and a third wing block, the connecting holes include a first hole, and / or a second hole, and / or a third hole; the first hole is provided on the first wing block, the second hole is provided on the second wing block, and the third hole is provided on the third wing block.

[0011] Optionally, the connecting holes include a fifth hole, and / or a sixth hole, and / or a seventh hole; the fifth hole is provided between the first wing block and the second wing block, the sixth hole is provided between the second wing block and the third wing block, and the seventh hole is provided between the first wing block and the third wing block.

[0012] Optionally, when the connecting holes include a first hole, a second hole, and a third hole, there are several first holes, and the aperture sizes of the several first holes are different; and / or, there are several second holes, and the aperture sizes of the several second holes are different; and / or, there are several third holes, and the aperture sizes of the several third holes are different.

[0013] Optionally, a connecting groove is provided on the shaft-passing hole, and / or a connecting protrusion is provided on the shaft-passing hole.

[0014] Optionally, when a connecting protrusion is provided on the shaft-passing hole, a clamping groove is provided on the furnace shaft, and the clamping groove is correspondingly fitted with the connecting protrusion; and / or, when a connecting groove is provided on the shaft-passing hole, a clamping protrusion is provided on the furnace shaft; the clamping protrusion is correspondingly fitted with the connecting groove.

[0015] Optionally, the shape of the shaft-passing hole is at least one of a square, a rectangle, a quadrilateral, a circle, an ellipse, an annular shape, and a triangle.

[0016] Compared with the prior art, the present application provides a grate, which includes a furnace shaft, several furnace bars, and several grate plates. The furnace shaft is nested and connected with the grate plates through shaft-passing holes, and the furnace bars are connected with the grate plates. The solid waste to be processed is carried by the furnace bars. The connection area between the furnace shaft and the grate plates is increased, and the connection is more stable, which can prevent the connection part between the furnace shaft and the grate plates from being damaged by force; and the connection area between the furnace shaft and the grate plates can be further increased by arranging more grate plates.

[0017] In the grate of the present application, the grate may include a number of grate bars. The solid waste is supported by the number of grate bars, while the material is turned over and conveyed downward. At the same time, the air flow in the upper and lower spaces can pass through the gaps between the grate bars in a controllable manner, which can improve the reaction effect of the material and the organization level of the material and the air flow. In addition, by supporting the solid waste by a number of grate bars, the contact area between the grate bars and the solid waste is reduced, which can prevent the solid waste from sticking to the grate during the treatment process. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the grate provided in the present application;

[0019] Figure 2 is a schematic diagram of the grate bar provided in the present application;

[0020] Figure 3 is a schematic diagram of another embodiment of the grate bar provided in the present application;

[0021] Figure 4 is a schematic diagram of another embodiment of the grate (excluding the grate bars) provided in the present application;

[0022] Figure 5 is a schematic diagram of some embodiments a, b, and c of the grate bar provided in the present application;

[0023] Figure 6 is a schematic diagram of some embodiments d, e, and f of the grate bar provided in the present application;

[0024] Figure 7 is a schematic diagram of some embodiments g, h, and i of the grate bar provided in the present application;

[0025] Figure 8 is a schematic diagram of some embodiments j, k, and l of the grate bar provided in the present application;

[0026] Figure 9 is a schematic diagram of some embodiments m, n, and o of the grate bar provided in the present application;

[0027] Figure 10 is a schematic diagram of some embodiments p, q, and r of the grate bar provided in the present application.

[0028] Description of the Reference Numerals:

[0029] 1. Grate bar; 101. First wing block; 102. Second wing block; 103. Third wing block; 104. Fourth wing block; 11. Connecting groove; 2. Shaft through hole; 3. Connecting protrusion; 4. Grate shaft; 41. Clamping protrusion; 5. Connecting hole; 501. First hole; 502. Second hole; 503. Third hole; 512. Fifth hole; 513. Seventh hole; 523. Sixth hole; 6. Grate bar; R1. Radius of the outer edge circle of the grate bar; R2. Radius of the circle formed by cutting to form the wing block; R3. Radius of the shaft through hole; R4. Inscribed circle radius of the grate bar. Detailed implementation mode

[0030] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0033] With reference to Figure 1 and Figure 2, in the first embodiment of the present application, a grate is provided, which includes a furnace shaft 4, a plurality of furnace bars 6 and a plurality of grate plates 1. Through holes 2 are provided on each of the plurality of grate plates 1, and the furnace shaft 4 is nestedly connected with the through holes 2; a plurality of the furnace bars 6 are all connected to the plurality of grate plates 1. That is, the furnace bars 6 and the grate plates 1 can be fixedly connected by means of welding, snap connection, bolt connection, etc.

[0034] The grate of this embodiment includes a furnace shaft 4, a plurality of furnace bars 6 and a plurality of grate plates 1. The furnace shaft 4 is nestedly connected with the grate plates 1 through the through holes 2, and the furnace bars 6 are fixedly connected with the grate plates 1. The solid waste to be processed is supported by the furnace bars 6. The connection area between the furnace shaft 4 and the grate plates 1 is increased, and the connection is more stable, which can prevent the connection part between the furnace shaft 4 and the grate plates 1 from being damaged by force; and the connection area between the furnace shaft 4 and the grate plates 1 can be further increased by arranging more grate plates 1. In addition, the grate can include a plurality of furnace bars 6. The solid waste is supported by the plurality of furnace bars 6 together, while the material is turned over and conveyed downward, and the air flow in the upper and lower spaces of the grate can also pass through the gaps between the furnace bars 6 in a controllable manner, which can improve the reaction effect of the material and the organization level of the material and the air flow; in addition, the solid waste is supported by the plurality of furnace bars 6 together, reducing the contact area between the furnace bars 6 and the solid waste, which can prevent the solid waste from sticking to the grate during the treatment process.

[0035] In some embodiments, each of the plurality of grate plates 1 is composed of at least one of a circular block, an elliptical block, a triangular block, a square block, a polygonal block and a wing block, or each of the plurality of grate plates 1 is composed of a plurality of wing blocks; the widths of the plurality of wing blocks gradually decrease or increase from one end to the other end.

[0036] Combined with reference Figure 8 j, k, l; the shape of the grate plate 1 is not limited. The shape of the grate plate 1 is preferably a regular shape for easy manufacturing and forming. The grate plate 1 can be composed of at least one of a circular block, an elliptical block, a triangular block, a square block, and a polygonal block.

[0037] At the same time, by adjusting the shape of the grate plate 1, the cross-sectional area of the grate plate 1 can be reduced, thereby reducing the weight of the grate plate 1, and further reducing the overall weight of the grate and the energy consumption required to rotate the grate. The grate plate 1 can be composed of at least one of a circular block, an elliptical block, a triangular block, a square block, a polygonal block and a plurality of wing blocks, or the grate plate 1 is composed of a plurality of wing blocks, that is, it can be spliced, welded or integrally formed by a plurality of wing blocks.

[0038] Combined with reference Figure 3 and Figure 4, the grate bar 1 can be obtained by cutting a circular block. Specifically, an integral grate bar 1 with several wing blocks combined can be obtained. First, a large circular block is used, and its radius is the radius R1 of the outer edge circle of the obtained grate bar. Then, circular cutting is performed on it to form wing blocks. The radius R2 of the circle for forming the wing blocks can be set according to actual needs. Then, a shaft hole 2 is cut on it, and the radius R3 of the shaft hole can also be set according to actual needs.

[0039] The sizes of the wing blocks can be selected to be the same, that is, circular cutting of the same size is used, or they can be selected to be different, using circular cutting of different sizes. Among them, preferably, the sizes of the wing blocks are the same, so that the centers of gravity of the wing blocks overlap, and the shortest distances from the wing blocks to the center of gravity are on the same inscribed circle. The radius R4 of the inscribed circle of the grate bar can be adjusted by adjusting the radius R2 of the circle for forming the wing blocks.

[0040] Combined with reference Figure 6 In some embodiments, a number of connection holes 5 may be provided on the grate bar 1; the grate bar 6 is fixedly connected to the grate bar 1 through the connection holes 5. Specifically, through the connection holes 5, the grate bar 6 is fitted and connected to the grate bar 1, improving the stability of the connection. The number of grate bars 6 can correspond to the number of connection holes 5 on the grate bar 1. By providing a number of connection holes 5 to connect a number of grate bars 6, more solid waste to be processed can be received by the grate bars 6. Moreover, there are intervals between the grate bars 6, and the contact area between each grate bar 6 and the solid waste is small, which can prevent the grate bars 6 from sticking to the solid waste. At the same time, a number of grate bars 6 can also disperse the pressure of the solid waste borne by each grate bar 6, preventing the connecting part of the grate bar 6 and the connection hole 5 from being deformed or damaged due to excessive force.

[0041] In some embodiments, a number of the wing blocks include a first wing block 101, a second wing block 102, and / or a third wing block 103, and / or a fourth wing block 104; the first wing block 101, the second wing block 102, and / or the third wing block 103, and / or the fourth wing block 104 are connected to each other. The grate is connected to the grate bar 6 through the wing blocks on the grate bar 1. The distance between the grate bars 6 can be adjusted by setting a number of wing blocks, so as to facilitate receiving the solid waste to be processed. Specifically, the angle between a number of wing blocks can be 3 through the shaft hole 20 - 180°.

[0042] Combined with reference Figure 5 In some embodiments, the angles between a number of wing blocks are the same, ensuring that the centers of gravity of the wing blocks overlap, facilitating the uniform rotation of the grate bar 1 driven by the grate shaft 4, and thus facilitating the full and uniform treatment of the solid waste placed on the wing blocks, such as combustion, drying, thermal decomposition, gasification decomposition, etc., so that the treatment progress of the solid waste on each wing block is the same.

[0043] With reference to Figure 6 d, e, and f in Figure 6 , in some embodiments, the connecting hole 5 includes a first hole 501, and / or a second hole 502, and / or a third hole 503, and / or a fourth hole; the first hole 501 is provided on the first wing block 101, the second hole 502 is provided on the second wing block 102, the third hole 503 is provided on the third wing block 103, and the fourth hole is provided on the fourth wing block 104. Preferably, the positions of the first hole 501, and / or the second hole 502, and / or the third hole 503, and / or the fourth hole on each wing block are the same, ensuring that the centers of gravity of the wing blocks overlap, facilitating the uniform rotation of the grate bars 1 driven by the furnace shaft 4.

[0044] With reference to Figure 7 g, h, and i in Figure 7 , in some embodiments, the connecting hole 5 includes a fifth hole 512, and / or a sixth hole 523, and / or a seventh hole 513; the fifth hole 512 is provided between the first wing block 101 and the second wing block 102, the sixth hole 523 is provided between the second wing block 102 and the third wing block 103, and the seventh hole 513 is provided between the first wing block 101 and the third wing block 103. The connecting hole 5 is located between adjacent wing blocks, increasing the contact area of the connecting part between the grate bar 6 and the grate bars 1, thereby enhancing the connection stability between the grate bar 6 and the grate bars 1. At the same time, the connecting hole 5 can also be an annular hole connecting the first wing block 101, the second wing block 102, and the third wing block 103, further increasing the contact area of the connecting part between the grate bar 6 and the grate bars 1.

[0045] With reference to Figure 9 m, n, and o in Figure 9 , in some embodiments, there are a plurality of the first holes 501, and the diameters of the plurality of the first holes 501 are different; and / or, there are a plurality of the second holes 502, and the diameters of the plurality of the second holes 502 are different; and / or, there are a plurality of the third holes 503, and the diameters of the plurality of the third holes 503 are different; and / or, there are a plurality of the fourth holes, and the diameters of the plurality of the fourth holes are different; and / or, there are a plurality of the fifth holes 512, and the diameters of the plurality of the fifth holes 512 are different; and / or, there are a plurality of the sixth holes 523, and the diameters of the plurality of the sixth holes 523 are different; and / or, there are a plurality of the seventh holes 513, and the diameters of the plurality of the seventh holes 513 are different.

[0046] That is, the sizes of a number of holes provided on the grate bar 1 can be different. For example, for the first hole 501 provided on the first wing block 101, when the width of the first wing block 101 gradually decreases from one end to the other end, the aperture diameter of the first hole 501 can decrease along the direction in which the width of the first wing block 101 decreases, thereby preventing the aperture diameter of the first hole 501 from being too large, which may weaken the load-bearing capacity of the first wing block 101, and further causing the first hole 501 to be damaged under force when the grate bar 6 receives solid waste. The same applies to the first hole 501, the second hole 502, the third hole 503, and the fourth hole.

[0047] Combined with reference Figure 1 、 Figure 2 and Figure 3 In some embodiments, a connecting groove 11 is provided on the shaft-passing hole 2, and / or a connecting protrusion 3 is provided on the shaft-passing hole 2. Through the provision of the connecting groove 11 and / or the connecting protrusion 3, the fitting between the furnace shaft 4 and the shaft-passing hole 2 is made closer, and the connection is more stable.

[0048] Similarly, in some embodiments, a clamping groove may be provided on the furnace shaft 4, and / or a clamping protrusion 41 may be provided on the furnace shaft 4; the clamping groove corresponds to and fits with the connecting protrusion 3; the clamping protrusion 41 corresponds to and fits with the connecting groove 11. Through the fitting of the clamping groove with the connecting protrusion 3 and the fitting of the clamping protrusion 41 with the connecting groove 11, the connection stability between the furnace shaft 4 and the shaft-passing hole 2 is improved.

[0049] Combined with reference Figure 10 For p, q, and r in reference

[0050] In some embodiments, the shape of the shaft-passing hole 2 is at least one of a square, a rectangle, a quadrilateral, a circle, an ellipse, an annular shape, and a triangle. Through the setting of the shape of the shaft-passing hole 2, the connection between the grate bar 1 and the furnace shaft 4 is made more fitting and corresponding, improving the connection stability between the two.

[0051] Combined with reference Figure 1 and Figure 4, in some embodiments, there are two or more grate bars 1. Two or more of the grate bars 1 are the same or have through-shaft holes 2 and connection holes 5 provided at corresponding positions. A furnace shaft 4 passes through the through-shaft holes 2 on two or more of the grate bars 1 and is connected to the grate bars 1; a furnace bar 6 passes through the connection holes 5 on two or more of the grate bars 1 and is connected to the grate bars 1. That is, by setting the number of the grate bars 1, the connection stability between the grate bars 1 and the furnace shaft 4 is improved, and the connection stability between the grate bars 1 and the furnace bar 6 is improved.

[0052] In summary, the present application provides a grate bar, including a furnace shaft, a plurality of furnace bars and a plurality of grate bars. The furnace shaft is nested and connected to the grate bars through through-shaft holes, and the furnace bars are connected to the grate bars. The solid waste to be processed is supported by the furnace bars. The connection area between the furnace shaft and the grate bars is increased, and the connection is more stable, which can prevent the connection part between the furnace shaft and the grate bars from being damaged by force; and the connection area between the furnace shaft and the grate bars can be further increased by arranging more grate bars.

[0053] The grate can include a plurality of furnace bars. The solid waste is supported by the plurality of furnace bars together, while the material is turned over and conveyed downward, and the air flow in the upper and lower spaces can also pass through the gaps between the furnace bars in a controllable manner, which can improve the reaction effect of the material and the organization level of the material and the air flow; in addition, the solid waste is supported by the plurality of furnace bars together, reducing the contact area between the furnace bars and the solid waste, and preventing the solid waste from sticking to the grate during the treatment process.

[0054] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the examples of the present application.

Claims

1. A grate, characterized in that, It includes a furnace shaft, a number of furnace bars and a number of grate plates. Through-hole for shaft are provided on each of the number of grate plates, and the furnace shaft is nestedly connected with the through-holes for shaft; the number of furnace bars are all connected with the number of grate plates.

2. The grate according to claim 1, wherein, Each of the number of grate plates is composed of at least one of a circular block, an oval block, a triangular block, a square block, a polygonal block and a wing block, or each of the number of grate plates is composed of a number of wing blocks; the widths of the number of wing blocks gradually decrease or increase from one end to the other end.

3. The grate according to claim 2, characterized in that, A number of connecting holes are provided on each of the number of grate plates; the furnace bars are fixedly connected with the grate plates through the connecting holes.

4. The grate according to claim 3, characterized in that, The number of wing blocks include a first wing block, a second wing block, and / or a third wing block, and / or a fourth wing block; the first wing block and the second wing block, and / or the third wing block, and / or the fourth wing block are connected to each other.

5. The grate according to claim 4, characterized in that, When the number of wing blocks include a first wing block, a second wing block and a third wing block, the connecting holes include a first hole, and / or a second hole, and / or a third hole; the first hole is provided on the first wing block, the second hole is provided on the second wing block, and the third hole is provided on the third wing block.

6. The grate according to claim 5, wherein, The connecting holes include a fifth hole, and / or a sixth hole, and / or a seventh hole; the fifth hole is provided between the first wing block and the second wing block, the sixth hole is provided between the second wing block and the third wing block, and the seventh hole is provided between the first wing block and the third wing block.

7. The grate according to claim 5, characterized in that, When the connecting holes include a first hole, a second hole and a third hole, the number of the first holes is plural, and the aperture sizes of the plural first holes are different; and / or, the number of the second holes is plural, and the aperture sizes of the plural second holes are different; and / or, the number of the third holes is plural, and the aperture sizes of the plural third holes are different.

8. The grate according to claim 1, characterized in that, Connecting grooves are provided on the through-holes for shaft, and / or connecting protrusions are provided on the through-holes for shaft.

9. The grate according to claim 8, wherein, When connecting protrusions are provided on the through-holes for shaft, engaging grooves are provided on the furnace shaft, and the engaging grooves are correspondingly fitted with the connecting protrusions; and / or, When connecting grooves are provided on the through-holes for shaft, engaging protrusions are provided on the furnace shaft; the engaging protrusions are correspondingly fitted with the connecting grooves.

10. The grate according to claim 1, characterized in that, The shape of the through-holes for shaft is at least one of a square, a rectangle, a quadrilateral, a circle, an ellipse, a circular ring and a triangle.

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