Detachable fixed fire grate segment and fire grate system

Abstract

The utility model belongs to the technical field of garbage incinerators, and particularly relates to a detachable fixed fire grate segment and a fire grate system. The detachable fixed fire grate segment comprises a fire grate segment plate body and a wear-resisting block which is detachably arranged at the tail part of the fire grate segment plate body, wherein the wear-resisting block is used for being matched with a sliding surface of a turning fire grate segment; when the wear-resistant block is seriously worn, the wear-resistant block is detached from the fire grate plate body and is replaced by a new wear-resistant block; the effects of reducing the later operation and maintenance cost and shortening the maintenance period are good; and meanwhile, timely and quick replacement is facilitated, raw garbage materials can be effectively prevented from entering the ash hopper due to excessive abrasion, the ignition loss rate is reduced, and the raw garbage materials are prevented from entering the lower scraper ash conveying machine to affect normal operation of the ash conveying machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste incinerators, and particularly relates to a detachable fixed grate bar and a grate system. Background Art

[0002] With the rapid development of China's social economy, the amount of waste generated in the process of urban production and life is increasing day by day, and the supporting waste incineration plants are also increasing continuously. Waste incineration projects can be seen everywhere in medium and large cities, and waste incineration plants are gradually developing towards counties.

[0003] As the core equipment of a waste incineration plant, the incinerator is crucial to the entire power plant. The grate bars are in direct contact with the waste during operation. As the core components of the incinerator, their importance is self-evident. If the grate bars are severely damaged, it is inevitable to carry out unscheduled furnace shutdown maintenance, which will increase the operating cost. Moreover, during the process of turning the grate bars, small hard particles will be stuck between the fixed grate bars and the turning grate bars during the lifting and lowering process. Due to the influence of movement friction, the wear of the head of the fixed grate bars is further aggravated. The manufacturing cost of the grate bars is high, and the replacement process is not easy. In addition, the middle and tail parts of the fixed grate bars are basically intact, and the abandonment of this kind of fixed grate bars will also cause waste of resources. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a detachable fixed grate bar and a grate system to solve the technical problems of the existing integral fixed grate bars, such as the large difficulty in overall replacement and disassembly due to head wear and resource waste.

[0005] To solve the above technical problems, the utility model provides a detachable fixed grate bar, including:

[0006] A grate bar plate body, the bottom of which is provided with a fixing part for installation on a support beam;

[0007] A wear-resistant block, detachably installed at the tail of the grate bar plate body, for cooperating with the sliding surface of the turning grate bar.

[0008] In an embodiment of the present application, the wear-resistant block includes a wear-resistant section facing the sliding surface of the turning grate bar and an installation section for installation at the tail of the grate bar plate body;

[0009] The bottom of the installation section is provided with a notch for accommodating the tail of the grate bar plate body; and

[0010] The thickness of the notch is equal to the thickness of the tail of the grate bar plate body.

[0011] In an embodiment of the present application, the detachable fixed grate bar further includes:

[0012] A support rib provided at the tail of the grate bar plate body;

[0013] One end of the support rib is fixedly connected to the bottom surface of the tail of the grate plate body, and the other end is located at the bottom of the wear-resistant section of the wear-resistant block.

[0014] In an embodiment of the present application, the tail end of the wear-resistant section is a thickened portion.

[0015] In an embodiment of the present application, the tail end surface of the wear-resistant section is a first inclined surface facing the sliding surface of the flipping grate plate.

[0016] In an embodiment of the present application, the included angle between the first inclined surface and the vertical plane is 3 to 5°.

[0017] In an embodiment of the present application, the tail of the support rib is a second inclined surface inclined towards the grate plate body.

[0018] In an embodiment of the present application, a first mounting hole is provided on the mounting section, and a second mounting hole is provided at the tail of the grate plate body;

[0019] The mounting section and the tail of the grate plate body are connected by bolts passing through the first mounting hole and the second mounting hole.

[0020] Correspondingly, the present utility model provides a grate system, including:

[0021] A flipping grate plate, one end of which is provided with a mounting portion and the other end is provided with a sliding surface; and

[0022] The detachable fixed grate plate as described above.

[0023] In an embodiment of the present application, the grate system further includes:

[0024] A flipping support wheel;

[0025] A flipping shaft, arranged above the flipping support wheel, and the mounting portion of the flipping grate plate is mounted on the flipping shaft; and

[0026] A support beam for mounting the grate plate body.

[0027] The beneficial effect of the present utility model is that the detachable fixed grate plate of the present utility model includes a grate plate body and a wear-resistant block detachably mounted at the tail of the grate plate body, and the wear-resistant block is used to cooperate with the sliding surface of the flipping grate plate; when the wear-resistant block is severely worn, the wear-resistant block can be removed from the grate plate body and a new wear-resistant block can be replaced; it has a good effect on reducing the later operation and maintenance costs and shortening the overhaul period; at the same time, it is convenient for timely and rapid replacement, can effectively prevent the raw waste from entering the ash hopper due to excessive wear, reduce the ignition loss rate, and prevent the raw waste from entering the scraper ash conveyor under the furnace and affecting the normal operation of the ash conveyor.

[0028] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will be obvious from the description, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0029] In order to make the above objectives, features and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, detailed descriptions are as follows. Description of the Drawings

[0030] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 is a schematic diagram of the detachable fixed grate bars of the present utility model;

[0032] Figure 2 is an assembly schematic diagram of the wear-resistant block and the grate bar plate body of the present utility model;

[0033] Figure 3 is a schematic diagram of a preferred embodiment of the wear-resistant block of the present utility model;

[0034] Figure 4 is a schematic diagram of the grate system of the present utility model.

[0035] In the figure:

[0036] Grate bar plate body 1, fixing part 11, support rib 12, second inclined surface 121, second mounting hole 13, wear-resistant block 2, wear-resistant section 21, first inclined surface 211, mounting section 22, notch 221, first mounting hole 222, tilting grate bar 4, mounting part 41, sliding surface 42, tilting support wheel 5, tilting shaft 6, support beam 7. Specific Embodiments

[0037] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0038] See Figure 1 、 Figure 2and Figure 4 As shown, in an embodiment of the present application, the detachable fixed grate bar includes:

[0039] A grate bar plate body 1, with a fixing portion 11 provided at its bottom for mounting on a support beam;

[0040] A wear-resistant block 2, detachably mounted at the tail of the grate bar plate body 1 for cooperating with the sliding surface 42 of the flipping grate bar 4.

[0041] In this embodiment, the grate bar plate body 1 and the wear-resistant block 2 can be alloy casting components, connected detachably; when the wear-resistant block 2 reaches a certain wear amount, only the new wear-resistant block 2 needs to be disassembled and replaced, overcoming the defect that the whole grate bar needs to be replaced due to the wear of the head in the past; at the same time, without the need to disassemble the whole fixed grate bar and flipping grate bar and other equipment processes, directly replace the wear-resistant block 2, this structure greatly shortens the maintenance period, ensures the operation period, and reduces the operation cost at the same time; it can effectively prevent the raw refuse from entering the ash hopper, reduce the ignition loss rate, and prevent the raw refuse from entering the ash scraper conveyor under the furnace, affecting the normal operation of the ash conveyor.

[0042] See Figure 1 、 Figure 2 and Figure 3 , the wear-resistant block 2 includes a wear-resistant section 21 facing the sliding surface 42 of the flipping grate bar 4, and a mounting section 22 for mounting at the tail of the grate bar plate body 1; a notch 221 for accommodating the tail of the grate bar plate body 1 is provided at the bottom of the mounting section 22; and the thickness of the notch 221 is equal to the thickness of the tail of the grate bar plate body 1.

[0043] Furthermore, in order to better support the wear-resistant section 21 of the wear-resistant block 2 and improve the overall rigidity, the detachable fixed grate bar further includes: a support rib 12 provided at the tail of the grate bar plate body 1; one end of the support rib 12 is fixedly connected to the bottom surface of the tail of the grate bar plate body 1, and the other end is located at the bottom of the wear-resistant section 21 of the wear-resistant block 2.

[0044] In this embodiment, the support rib 12 and the grate bar plate body 1 can be integrally cast; the support rib 12 extends from the tail of the grate bar plate body 1 to the bottom of the wear-resistant section 21 of the wear-resistant block 2, which can effectively support the wear-resistant section 21; and, the thickness of the notch 221 is equal to the thickness of the tail of the grate bar plate body 1, so that the upper surface of the support rib 12 can be in effective contact with the bottom surface of the wear-resistant section 21.

[0045] In this embodiment, preferably, the tail end of the wear-resistant section 21 is a thickened portion; it can increase the wear resistance.

[0046] See Figure 3, Preferably, the end face of the wear-resistant section 21 is a first inclined surface 211 facing the sliding surface 42 of the flipping grate bar 4; the first inclined surface 211 can effectively ensure the contact between the tail of the wear-resistant section 21 and the sliding surface 42 of the flipping grate bar 4, and can reduce the air leakage and ash leakage between the tail of the wear-resistant section 21 and the sliding surface 42 of the flipping grate bar 4 during the flipping-up and flipping-down processes of the flipping grate bar 4.

[0047] Preferably, the angle A between the first inclined surface 211 and the vertical plane is 3 to 5°.

[0048] See Figure 2 , the tail of the support rib 12 is a second inclined surface 121 inclined towards the grate bar plate body 1; the second inclined surface 121 is an avoidance design for the tail of the support rib 12, which can prevent the tail of the support rib 12 from contacting the sliding surface 42 of the flipping grate bar 4.

[0049] In this embodiment, optionally, a first mounting hole 222 is provided on the mounting section 22, and a second mounting hole 13 is provided at the tail of the grate bar plate body 1; the mounting section 22 and the tail of the grate bar plate body 1 are connected by a bolt 3 passing through the first mounting hole 222 and the second mounting hole 13.

[0050] In this embodiment, the bolt 3 can be a high-temperature resistant bolt.

[0051] In this embodiment, the first mounting hole 222 and the second mounting hole 13 are coaxially and vertically arranged. After the tail of the grate bar plate body 1 is inserted into the notch 221 of the mounting section 22 for positioning, the bolt 3 is vertically inserted into the first mounting hole 222 and the second mounting hole 13 for fixed connection.

[0052] In this embodiment, the above-mentioned vertical fixing method can be free from the interference of other components and is convenient for operation.

[0053] See Figure 4 , correspondingly, in the second aspect embodiment of the present application, a grate system is provided, including:

[0054] A flipping grate bar 4, one end of which is provided with a mounting portion 41 and the other end is provided with a sliding surface 42; and

[0055] The detachable fixed grate bar as described above.

[0056] In this embodiment, the cooperation mode between the flipping grate bar 4 and the detachable fixed grate bar is as described above, and will not be elaborated here.

[0057] Further, the grate system further includes: a flipping support wheel 5; a flipping shaft 6, arranged above the flipping support wheel 5, and the mounting portion 41 of the flipping grate bar 4 is mounted on the flipping shaft 6; and a support beam 7 for mounting the grate bar plate body 1.

[0058] In summary, the detachable fixed grate bar structure of the present utility model is simple. The wear-resistant block and the grate bar plate body are connected by several high-temperature resistant bolts, with a simple structure and convenient operation. When replacement is needed, only the wear-resistant block needs to be replaced, which solves the need for replacing the entire original fixed grate bar and greatly reduces the later operation and maintenance costs. When replacing the original fixed grate, its overall disassembly is required and the disassembly process is difficult (to disassemble the original fixed grate bar, it is necessary to disassemble the upper turning grate bar and then disassemble equipment such as the pin shaft of the fixed grate bar before the original fixed grate bar can be disassembled). The detachable fixed grate bar of the present utility model separates the wear-resistant block by disassembling the upper high-temperature resistant bolts, and then the wear-resistant block can be replaced without disassembling the turning grate bar or equipment such as the pin shaft of the fixed grate bar. In addition, it can effectively prevent raw garbage from entering the ash hopper, reduce the burning loss rate, and prevent raw garbage from entering the ash conveyor under the furnace, affecting the normal operation of the ash conveyor.

[0059] All the components (parts without specific structures described) selected in this application are common standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0060] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0061] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] Taking the above-mentioned ideal embodiments of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A detachable fixed grate plate, characterized in that: include: A grate plate body (1), the bottom of which is provided with a fixing portion (11) for mounting on a support beam; The wear-resistant block (2) is detachably mounted on the tail of the grate plate (1) and is used to cooperate with the sliding surface (42) of the flipping grate plate (4).

2. The detachable fixed grate sheet according to claim 1, characterized in that: The wear-resistant block (2) comprises a wear-resistant section (21) facing the sliding surface (42) of the flipping grate plate (4), and a mounting section (22) for mounting on the tail of the grate plate body (1); The bottom of the installation section (22) is provided with a notch (221) for accommodating the tail of the grate plate body (1); and The thickness of the notch (221) is equal to the thickness of the tail portion of the grate plate body (1).

3. The detachable fixed grate sheet according to claim 1, characterized in that: Also includes: A supporting rib (12) arranged at the rear of the grate plate body (1); One end of the supporting rib (12) is fixedly connected to the bottom surface of the tail of the grate plate body (1), and the other end is located at the bottom of the wear-resistant section (21) of the wear-resistant block (2).

4. The detachable fixed grate sheet according to claim 3, characterized in that: The tail end of the wear-resistant section (21) is a thickened portion.

5. The detachable fixed grate sheet according to claim 3, characterized in that: The rear end surface of the wear-resistant section (21) is a first inclined surface (211) facing the sliding surface (42) of the flipping grate plate (4).

6. The detachable fixed grate sheet according to claim 5, characterized in that: The included angle between the first inclined surface (211) and the vertical surface is 3-5°.

7. The detachable fixed grate sheet according to claim 5, characterized in that: The tail portion of the supporting rib (12) is a second inclined surface (121) inclined toward the grate plate body (1).

8. The detachable fixed grate sheet according to claim 2, characterized in that: The mounting section (22) is provided with a first mounting hole (222), and the tail of the grate plate body (1) is provided with a second mounting hole (13); The mounting section (22) and the tail of the grate plate body (1) are connected by bolts (3) passing through the first mounting hole (222) and the second mounting hole (13).

9. A grate system, characterized in that: include: A flip grate plate (4) having a mounting portion (41) at one end and a sliding surface (42) at the other end; as well as A detachable fixed grate sheet as claimed in any one of claims 1 to 8.

10. The grate system according to claim 9, characterized in that: The grate system also includes: Turning the support wheel (5); A turning shaft (6) is arranged above the turning support wheel (5), and the mounting portion (41) of the turning grate plate (4) is mounted on the turning shaft (6); and The support beam (7) is used for installing the grate plate body (1).

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