Novel fixed fire grate segment and fire grate turning structure

Abstract

The utility model belongs to the technical field of fire grate segments, and particularly relates to a novel fixed fire grate segment and a fire grate turning structure. The novel fixed fire grate segment comprises a flat plate part located in the middle of the fixed fire grate segment, and an installation part used for being installed on a fixed fire grate segment supporting beam is arranged on the bottom face of the flat plate part. The first connecting part is positioned at the end part of the flat plate part towards the incoming material side; the second connecting part is positioned at the end part, facing the material removing side, of the flat plate part; a reinforcing layer is arranged on the side face of the first connecting part. The novel fixed fire grate segment is simple in structure, and the wear-resistant reinforcing layer is additionally arranged at the head of the fixed fire grate segment, so that the service life is prolonged; according to the novel fixed fire grate segment, the requirement for replacing the whole original fixed fire grate segment can be met only by surfacing the head, the later operation and maintenance cost is greatly reduced, the interval of the equipment overhaul period is increased, garbage raw materials can be prevented from entering an ash hopper during overturning, and the ignition loss rate is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of grate plates, and in particular relates to a novel fixed grate plate and a grate turning structure. Background Art

[0002] Fixed grate slices are non-moving grate slices, and their position during waste incineration is fixed. For waste incinerators equipped with a flipping structure, the next row of flipping grate slices is the fixed grate slices. During the process of incinerating waste, the flipping grate slices need to be flipped continuously to better contact the waste with the air and improve the combustion efficiency. During the flipping and lowering process, small pieces of garbage will enter between the flipping grate slices and the fixed grate slices, causing wear on the head of the fixed grate slices. Over time, the gap becomes larger and larger, and the wear on the head of the grate slices becomes more and more serious, while the middle and tail of the fixed grate slices are basically intact. Because the conventional fixed grate slice is an integral casting, the entire fixed grate slice needs to be replaced after the head of the fixed grate slice is severely worn. Utility Model Content

[0003] The utility model aims to provide a novel fixed grate plate and a grate flipping structure to solve the technical problem that the head of the existing fixed grate plate is easily damaged.

[0004] In order to solve the above technical problems, the utility model provides a new type of fixed grate plate, including:

[0005] A flat plate portion located in the middle of the fixed grate plate, wherein the bottom surface of the flat plate portion is provided with a mounting portion for mounting on a fixed grate plate support beam;

[0006] A first connecting portion located at an end of the flat plate portion facing the incoming material;

[0007] A second connecting portion located at an end of the flat plate portion facing the material removal side;

[0008] A reinforcement layer is disposed on the side surface of the first connecting portion.

[0009] In one embodiment of the present application, the reinforcement layer is a surfacing layer.

[0010] In one embodiment of the present application, the material of the surfacing layer includes Inconel625 and GH3625.

[0011] In one embodiment of the present application, the flat plate portion, the mounting portion, the first connecting portion, and the second connecting portion are integrally formed.

[0012] In one embodiment of the present application, the top end height of the first connecting portion is higher than the upper surface of the flat plate portion; and the second connecting portion is formed by bending downwardly the end portion of the flat plate portion toward the material removal side.

[0013] In one embodiment of the present application, the top surface of the first connecting portion is an inclined surface, and the thickness of the first connecting portion gradually decreases from the incoming material to the outgoing material direction.

[0014] Accordingly, the present application also provides a grate flipping structure, comprising:

[0015] A turning shaft, on which a turning grate piece is fixed;

[0016] A flip support wheel, used to support the rotation of the flip shaft;

[0017] A fixed grate support beam is arranged on one side of the material removal direction of the flip shaft; and

[0018] A novel fixed grate plate as described above.

[0019] In one embodiment of the present application, the flip grate plate includes an arc-shaped plate facing the novel fixed grate plate; the surface of the arc-shaped plate is gap-matched with the reinforcement layer.

[0020] The beneficial effects of the utility model are:

[0021] 1. The new fixed grate plate has a simple structure and its service life is extended by adding a wear-resistant reinforcement layer to the head of the fixed grate plate;

[0022] 2. Low equipment maintenance cost. The new type of fixed grate plate only needs to be welded on the head to solve the need for replacing the original fixed grate plate, which greatly reduces the subsequent operation and maintenance costs;

[0023] 3. The interval between equipment maintenance cycles is increased. When replacing the fixed grate, it needs to be disassembled as a whole and the disassembly process is difficult. The original fixed grate has a relatively short service life and is replaced more frequently. The use of the new fixed grate can reduce the replacement rate.

[0024] 4. The reinforcement layer can effectively prevent the fixed grate slices from excessive wear, which will cause the gap between the flipping grate slices and the fixed grate slices to become larger. It can prevent the garbage raw material from entering the ash hopper during flipping, reduce the ignition reduction rate, and prevent the garbage raw material from entering the scraper ash conveyor under the furnace, affecting the normal operation of the ash conveyor.

[0025] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of a preferred embodiment of the novel fixed grate plate of the utility model;

[0029] Figure 2 It is a schematic diagram of a preferred embodiment of the grate flipping structure of the utility model;

[0030] Figure 3 It is a turning schematic diagram of the grate turning structure of the utility model.

[0031] In the figure:

[0032] Fixed grate plate 1, flat plate portion 11, mounting portion 111, first connecting portion 12, reinforcing layer 121, second connecting portion 13, fixed grate plate supporting beam 2, flip shaft 3, flip grate plate 4, arc plate 41, flip supporting wheel 5. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Professional terms and explanations:

[0035] Surfacing: refers to the welding process of depositing a layer of metal layer with wear-resistant, corrosion-resistant, heat-resistant and other properties on the surface or edge of the workpiece.

[0036] In a garbage incinerator equipped with a flipping structure, the next row of flipping grate slices is a fixed grate slice. In the process of incinerating garbage, in order to better contact the garbage with the air and improve the combustion efficiency, the flipping grate slices need to be flipped continuously. The fixed grate slice is a non-moving grate slice, and its position in the garbage incineration is fixed. In order to prevent garbage from entering the lower layer of the grate when the flipping grate slice is flipped, the flipping grate slice has an arc plate, and the arc plate is close to the head of the fixed grate slice or has a very small gap. However, during the flipping and landing process, small garbage lumps will enter between the flipping grate slice and the fixed grate slice, causing wear on the head of the fixed grate slice. Over time, the gap becomes larger and larger, and the wear on the head of the grate slice becomes more and more serious, while the middle and tail of the fixed grate slice are basically intact. Because the conventional fixed grate slice is an integral casting, after the head of the fixed grate slice is severely worn, the entire fixed grate slice needs to be replaced.

[0037] Based on this, see Figure 1 , Figure 2 and Figure 3 In one embodiment of the present application, the new fixed grate plate includes: a flat plate portion 11 located in the middle of the fixed grate plate 1, and the bottom surface of the flat plate portion 11 is provided with a mounting portion 111 for mounting on the fixed grate plate support beam 2; a first connecting portion 12 located at the end of the flat plate portion 11 facing the incoming material side; a second connecting portion 13 located at the end of the flat plate portion 11 facing the removing material side; and a reinforcing layer 121 is provided on the side of the first connecting portion 12.

[0038] exist Figure 1 , Figure 2 and Figure 3 In the transport direction of materials, you can define it as from left to right.

[0039] In this embodiment, the first connecting portion 12, i.e., the head of the fixed grate plate 1, is used to cooperate with the arc plate 41 of the flipping grate plate 4; by providing a reinforcing layer 121 on the side of the first connecting portion 12, the wear resistance of the head of the fixed grate plate 1 can be enhanced to extend its service life.

[0040] Optionally, the reinforcement layer 121 is a surfacing layer.

[0041] Optionally, the material of the surfacing layer includes but is not limited to Inconel625 and GH3625.

[0042] In this embodiment, optionally, the flat plate portion 11 , the mounting portion 111 , the first connecting portion 12 , and the second connecting portion 13 may be integrally formed.

[0043] Optionally, the body of the fixed grate plate 1 may be an alloy casting composed of Ni, Cr or the like.

[0044] In this embodiment, the top height of the first connecting portion 12 is higher than the upper surface of the flat plate portion 11, and it can be a raised portion arranged above the end of the flat plate portion 11 facing the incoming material direction; the second connecting portion 13 is formed by bending downward the end of the flat plate portion 11 facing the material removal side; the second connecting portion 13 can be used to connect with the next level of fixed grate plate, and its downward bent end can be sealed with the surface of the next level of fixed grate plate to prevent materials from falling under the grate.

[0045] Preferably, see Figure 1 and Figure 3 The top surface of the first connecting portion 12 is an inclined surface, and the thickness of the first connecting portion 12 gradually decreases from the incoming material to the outgoing material direction.

[0046] In some embodiments, the top surface of the first connecting portion 12 is an inclined surface, which can facilitate the material flipped up by the flipping grate plate 4 to fall promptly along the inclined surface to the surface of the flat plate portion 11, so that no excessive material will remain on the top of the first connecting portion 12. In this way, when the flipping grate plate 4 is flipped downward, it is not easy for the material remaining on the top of the first connecting portion 12 to be stuck between the arc plate 41 and the reinforcement layer 121.

[0047] On the basis of the above-mentioned embodiments, the present embodiment provides a grate flipping structure, comprising: a flipping shaft 3, on which a flipping grate plate 4 is fixed; a flipping support wheel 5, for supporting the rotation of the flipping shaft 3; a fixed grate plate support beam 2, arranged on one side of the material removal direction of the flipping shaft 3; and the new fixed grate plate 1 as described above.

[0048] Furthermore, the flip grate plate 4 includes an arc plate 41 facing the fixed grate plate 1 ; the surface of the arc plate 41 is gap-matched with the reinforcement layer 121 .

[0049] In this embodiment, the flip support wheel 5 supports the flip shaft 3 to rotate, and the flip grate piece 4 fixed on the flip shaft 3 will flip up or fall down. The next level of the flip grate piece 4 is the fixed grate piece 1. The fixed grate piece 1 is installed on the fixed grate piece support beam 2 through the mounting portion 111. Both the fixed grate piece 1 and the fixed grate piece support beam 2 are immobile. When the flip grate piece 4 is flipped up or down, it is inevitable that small hard particles will enter between the reinforcement layer 121 and the arc plate 41. Because the reinforcement layer 121 is a cladding layer, it has stronger wear resistance, corrosion resistance, and heat resistance. The cladding layer will not be worn or corroded in a short time. Therefore, the gap between the cladding layer and the arc plate 41 will not be too large to affect the normal operation of the equipment. The fixed grate piece 1 has a good effect on reducing the later operation and maintenance costs and lengthening the maintenance cycle. At the same time, it can effectively prevent garbage raw materials from entering the ash hopper, reduce the ignition loss rate, and prevent garbage raw materials from entering the scraper ash conveyor under the furnace, affecting the normal operation of the ash conveyor.

[0050] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0051] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new type of fixed grate, characterized in that: include: A flat plate portion (11) located in the middle of the fixed grate plate (1), wherein a mounting portion (111) for mounting on a fixed grate plate support beam (2) is provided on the bottom surface of the flat plate portion (11); A first connecting portion (12) located at an end of the flat plate portion (11) facing the incoming material; A second connecting portion (13) located at an end of the flat plate portion (11) facing a material removal side; A reinforcement layer (121) is provided on the side surface of the first connecting portion (12).

2. The novel fixed grate sheet according to claim 1 is characterized in that: The reinforcement layer (121) is a cladding layer.

3. The novel fixed grate sheet according to claim 1 is characterized in that: The flat plate portion (11), the mounting portion (111), the first connecting portion (12), and the second connecting portion (13) are integrally formed.

4. The novel fixed grate sheet according to claim 1 is characterized in that: The top end of the first connecting portion (12) is higher than the upper surface of the flat plate portion (11); The second connecting portion (13) is formed by bending the end of the flat plate portion (11) toward the material removal side downward.

5. The novel fixed grate sheet according to claim 4 is characterized in that: The top surface of the first connecting portion (12) is an inclined surface, and the thickness of the first connecting portion (12) gradually decreases from the material input to the material removal direction.

6. A grate turning structure, characterized in that: include: A turning shaft (3) on which a turning grate plate (4) is fixed; A flip support wheel (5), used for supporting the flip shaft (3) to rotate; A fixed grate support beam (2) is arranged on one side of the material removal direction of the turning shaft (3); and A new type of fixed grate plate (1) as claimed in any one of claims 1 to 5.

7. The grate turning structure according to claim 6, characterized in that: The flip grate plate (4) comprises an arc-shaped plate (41) facing the fixed grate plate (1); The surface of the arc-shaped plate (41) is clearance-matched with the reinforcement layer (121).

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