Automatic sealing fire grate segment, fire grate unit and fire grate

Abstract

The utility model discloses an automatic sealing fire grate segment, a fire grate unit and a fire grate, relates to the technical field of waste incineration power generation, is suitable for a household waste incinerator, and comprises a fire grate segment body and a sealing piece, a T-shaped clamping groove is formed in the lower portion of the front end of the fire grate segment body, the sealing piece is of a T-shaped structure, and the sealing piece is movably arranged in the T-shaped clamping groove; the T-shaped clamping groove comprises a transverse groove and a vertical groove, the sealing piece comprises a transverse section and a vertical section, the depth of the transverse groove is larger than the thickness of the transverse section, and the depth of the vertical groove is smaller than the length of the vertical section, so that the sealing piece can be attached to the lower fire grate segment or the lower transition plate all the time under the action of gravity. The device can automatically eliminate upper and lower gaps, reduce the amount of raw materials falling into the ash hopper, improve the operation stability of equipment and reduce the frequency of furnace shutdown maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of waste incineration power generation, and in particular to an automatic sealing grate sheet, a grate unit and a grate. Background Art

[0002] With the development of national economy and urban construction, the amount of garbage generated is increasing, and land resources are becoming increasingly scarce. Waste incineration power generation technology has become a new trend and new hot spot for many cities to solve the problem of garbage disposal. The waste incineration method can reduce the volume of garbage by 90% and the amount by 70%-80%, greatly reducing the land occupation area, meeting the requirements of reduction; the waste heat from waste incineration can also be used for heating and power generation, achieving the purpose of resource recycling.

[0003] The grate is one of the core components of the waste incinerator. The grate movement of the incinerator is longitudinal movement, with both forward and backward reciprocating movement and up and down movement. There are several grate units on a grate beam. The grate pieces are installed in the grate unit. The gap between the upper and lower grate pieces is about 2mm. This gap does not change with the running time. Due to the gap between the upper and lower grate pieces, raw materials and leachate will fall into the ash hopper from the gap, increasing the slag reduction rate and even causing the ash hopper to catch fire; the gap between the grate piece and the lower transition plate is about 3-5mm. After running for a period of time, the roller of the grate beam wears and the grate beam slowly sinks. This gap gradually decreases. When the gap is zero, the grate piece and the lower transition plate rub against each other, resulting in an increase in the output of the hydraulic cylinder. After running for a period of time, the grate piece and the lower transition plate are damaged by friction. At this time, the furnace needs to be stopped and the lower transition plate needs to be replaced. To replace the lower transition plate, the refractory mud must be knocked off first, and the refractory mud must be re-poured after the new transition plate is installed, which is very time-consuming and labor-intensive. To this end, the utility model provides an automatic sealing grate sheet, a grate unit and a grate. Utility Model Content

[0004] The embodiments of the present application provide an automatically sealed grate plate, a grate unit and a grate, which can automatically eliminate the upper and lower gaps, reduce the amount of raw material falling into the ash hopper, improve the operating stability of the equipment, and reduce the number of shutdowns for maintenance.

[0005] In a first aspect, the present application provides an automatic sealing grate plate, comprising: a grate plate body and a sealing plate;

[0006] A T-shaped slot is provided at the lower front end of the grate plate body;

[0007] The sealing sheet is a T-shaped structure, and the sealing sheet is movably arranged in the T-shaped slot;

[0008] The T-shaped slot includes a transverse slot and a vertical slot;

[0009] The sealing sheet comprises a transverse section and a vertical section;

[0010] The depth of the transverse groove is greater than the thickness of the transverse section, and the depth of the vertical groove is less than the length of the vertical section, so that the sealing sheet can always fit with the lower grate sheet or the lower transition plate under the action of gravity.

[0011] Optionally, the T-shaped slot penetrates the grate plate body along the width direction of the grate plate body.

[0012] Optionally, one end of the vertical section away from the transverse section is a slope structure.

[0013] A second aspect of the present application provides a grate unit, comprising: a plurality of the above-mentioned automatic sealing grate sheets;

[0014] The upper and lower adjacent automatic sealing grate plates are connected by the sealing plate;

[0015] The last automatic sealing grate plate is connected to the lower transition plate by the sealing plate.

[0016] A third aspect of the present application provides a grate, which comprises: a lower transition plate and the above-mentioned grate unit.

[0017] It can be seen from the above technical scheme that the embodiments of the present application have the following advantages: the automatic sealing grate plate can automatically eliminate the gap between the upper and lower grate plates through the sealing plate, ensuring that the upper and lower grate plates are always fitted together, so that the lateral gap of the grate approaches zero, thereby effectively reducing the amount of raw material falling into the ash hopper and reducing the slag reduction rate. At the same time, the automatic sealing grate plate can also dynamically eliminate the gap between the grate plate and the lower transition plate, thereby effectively extending the service life of the grate plate and the lower transition plate, reducing the number of shutdowns for maintenance, and improving the stability of equipment operation. In addition, the automatic sealing grate plate only needs to replace the sealing plate, and there is no need to replace the grate plate body, which can effectively reduce the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the automatic sealing grate in the embodiment of the present application;

[0019] Figure 2 A top view of the automatic sealing grate in the embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the connection structure between the grate unit and the lower transition plate in the embodiment of the present application;

[0021] Wherein, the accompanying drawings are marked as follows:

[0022] 1-grate plate body, 11-T-shaped slot, 2-sealing plate, 3-lower transition plate, 4-grate unit. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In the description of the present application, 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 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 cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] 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; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] This application provides an embodiment of an automatic sealing grate plate. Figures 1 to 3 .

[0027] The automatic sealing grate plate in this embodiment includes: a grate plate body 1 and a sealing plate 2. A T-shaped slot 11 is opened at the lower front end of the grate plate body 1. The sealing plate 2 is a T-shaped structure, and the sealing plate 2 is movably arranged in the T-shaped slot 11; the T-shaped slot 11 includes a transverse slot and a vertical slot, and the sealing plate 2 includes a transverse section and a vertical section. The depth of the transverse slot is greater than the thickness of the transverse section, and the depth of the vertical slot is less than the length of the vertical section, so that the sealing plate 2 can always fit with the lower grate plate or the lower transition plate 3 under the action of gravity.

[0028] It should be noted that: the automatic sealing grate plate can automatically eliminate the gap between the upper and lower grate plates through the sealing plate 2, ensuring that the upper and lower grate plates are always fitted together, making the lateral gap of the grate approach zero, thereby effectively reducing the amount of raw material falling into the ash hopper and reducing the slag reduction rate. At the same time, the automatic sealing grate plate can also dynamically eliminate the gap between the grate plate and the lower transition plate, thereby effectively extending the service life of the grate plate and the lower transition plate, reducing the number of shutdowns for maintenance, and improving the stability of equipment operation. In addition, the automatic sealing grate plate only needs to replace the sealing plate 2, and there is no need to replace the grate plate body 1, which can effectively reduce the operation and maintenance costs.

[0029] The above is an embodiment of the present invention provided by the embodiment of the automatic sealing grate slice embodiment 1, the following is an embodiment of the present invention provided by the embodiment of the automatic sealing grate slice embodiment 2, please refer to the specific Figures 1 to 3 .

[0030] The automatic sealing grate plate in this embodiment includes: a grate plate body 1 and a sealing plate 2. A T-shaped slot 11 is opened at the lower front end of the grate plate body 1. The sealing plate 2 is a T-shaped structure, and the sealing plate 2 is movably arranged in the T-shaped slot 11; the T-shaped slot 11 includes a transverse slot and a vertical slot, and the sealing plate 2 includes a transverse section and a vertical section. The depth of the transverse slot is greater than the thickness of the transverse section, and the depth of the vertical slot is less than the length of the vertical section, so that the sealing plate 2 can always fit with the lower grate plate or the lower transition plate 3 under the action of gravity.

[0031] It should be noted that: when in use, the grate beam drives the grate piece to move back and forth and up and down, and the sealing piece 2 can always fit with the lower grate piece or the lower transition plate 3 under the action of gravity. When the gap between the upper and lower grate piece bodies 1 becomes larger, the sealing piece 2 can rely on its own gravity to move downward to fit with the lower grate piece body 1. When the gap between the upper and lower grate piece bodies 1 becomes smaller, the lower grate piece body 1 can push the sealing piece 2 back upward; the connection between the last grate piece and the lower transition plate 3 is the same. When the gap between the grate piece body 1 and the lower transition plate 3 becomes larger, the sealing piece 2 can rely on its own gravity to move downward to fit with the lower transition plate 3. When the gap between the grate piece body 1 and the lower transition plate 3 becomes smaller, the lower transition plate 3 can push the sealing piece 2 back upward.

[0032] The T-shaped slot 11 serves as a limit for the front, rear, upper and lower positions. Since the T-shaped slot 11 faces away from the garbage side and opens downward, it is not easy for the garbage to get stuck in the T-shaped slot 11. Specifically, the T-shaped slot 11 penetrates the grate sheet body 1 along the width direction of the grate sheet body 1, so that the sealing sheet 2 can be inserted into the T-shaped slot 11 or pulled out from the T-shaped slot 11 from the left and right sides of the grate sheet body 1, which is convenient for disassembly, assembly and replacement of the sealing sheet 2.

[0033] One end of the vertical section away from the horizontal section is an inclined structure.

[0034] In the specific implementation, the sealing sheet 2 is inserted into the T-shaped slot 11 of the grate sheet body 1 from both sides, and then the grate sheet is installed in the grate unit 4. When replacing, the grate sheet is taken out from the grate unit 4, and then the sealing sheet 2 is pulled out from the T-shaped slot 11.

[0035] like Figure 3 As shown, the present application also provides a grate unit 4, which includes a plurality of the above-mentioned automatic sealing grate plates, and the upper and lower adjacent automatic sealing grate plates are bonded and connected by a sealing plate 2; the last automatic sealing grate plate is bonded and connected to the lower transition plate 3 by a sealing plate 2.

[0036] It should be noted that: a grate unit 4 is equipped with several automatic sealing grate plates, the upper and lower automatic sealing grate plates are overlapped with each other, the grate plate body 1 and the sealing plate 2 are restricted in the grate unit 4 (the grate unit 4 restricts the left and right movement of the grate plate body 1 and the sealing plate 2), and the sealing plate 2 mainly moves up and down, which can automatically eliminate the gap between the upper and lower automatic sealing grate plates and the gap between the automatic sealing grate plate and the lower transition plate 3.

[0037] The present application also provides a grate, which comprises a lower transition plate 3 and the above-mentioned grate unit 4.

[0038] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic sealing grate, characterized in that: include: Grate plate body and sealing plate; A T-shaped slot is provided at the lower front end of the grate plate body; The sealing sheet is a T-shaped structure, and the sealing sheet is movably arranged in the T-shaped slot; The T-shaped slot includes a transverse slot and a vertical slot; The sealing sheet comprises a transverse section and a vertical section; The depth of the transverse groove is greater than the thickness of the transverse section, and the depth of the vertical groove is less than the length of the vertical section, so that the sealing sheet can always fit with the lower grate sheet or the lower transition plate under the action of gravity.

2. The automatic sealing grate sheet according to claim 1, characterized in that: The T-shaped slot penetrates the grate plate body along the width direction of the grate plate body.

3. The automatic sealing grate sheet according to claim 1, characterized in that: One end of the vertical section away from the transverse section is an inclined structure.

4. A grate unit, characterized in that: include: A plurality of self-sealing grate plates as claimed in any one of claims 1 to 3; The upper and lower adjacent automatic sealing grate plates are connected by the sealing plate; The last automatic sealing grate plate is connected to the lower transition plate by the sealing plate.

5. A grate, characterized in that: include: A lower transition plate and a grate unit as claimed in claim 4.

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