Fire grate segment, fire grate frame and small garbage incinerator

Abstract

The utility model discloses a fire grate segment, a fire grate frame and a small garbage incinerator, and belongs to the technical field of environmental protection. The fire grate segment comprises a fire grate segment cover plate, a fixed shaft position and a plurality of parallel rib plates are arranged at the lower end of the fire grate segment cover plate, and vent holes are formed in the side end of the fire grate segment cover plate. A vent groove is formed in the upper surface of the fire grate segment cover plate; the fire grate segments are fixed through the fixing shaft positions, the heat dissipation performance of the fire grate segments is improved through the rib plates, and the ventilation capacity of the fire grate segments is increased through the ventilation holes and the ventilation grooves. According to the fire grate segment disclosed by the utility model, the plurality of rib plates are longitudinally arranged in the fire grate segment cover plate, so that the strength is ensured, and the heat dissipation performance of the fire grate is improved; by arranging the first axial position and the second axial position, the fire grate segment is prevented from eccentric wear and tilting to a certain extent, the use requirement of the garbage incinerator can be met, the structure is simple, and meanwhile the production and maintenance cost is reduced by adopting an integrated casting.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection, and in particular relates to a grate sheet, a grate frame and a small-sized garbage incinerator. Background Art

[0002] A waste incinerator is a device for incinerating and treating waste. Currently, the equipment used in waste incineration projects mainly includes mechanical grate furnaces, fluidized bed incinerators and rotary incinerators. Among them, mechanical grate furnaces are more widely used. The waste enters the downward-inclined grate through the feed hopper. Due to the staggered movement between the grates, the waste is pushed downward, passing through various areas on the grate in turn until it is burned out and discharged from the furnace.

[0003] The grate plate is the core component of the grate, and there are three types of grate plates: fixed, sliding and flipping. The structural design of the grate plate must ensure the ventilation rate of the grate, ensure the cooling degree of the grate, and the material must ensure high temperature resistance, corrosion resistance and wear resistance.

[0004] The existing grate furnace has a large proportion of garbage entering the furnace and complex composition. After combustion, non-combustible solids are easily mixed between the grate plates, which are prone to abnormal wear such as eccentric wear. At the same time, the high-temperature corrosive gas generated by combustion corrodes the grate plates, causing the gaps to become larger, increasing slag leakage, reducing combustion efficiency, and the grate plates will also warp and burn, affecting equipment operation. There are two types of grate plates: gap assembly and fastening assembly. Fastening assembly can prevent the grate plates from warping and eccentric wear to a certain extent, but it is inconvenient to disassemble and repair. The gap assembly is easy to disassemble and repair, but it is easy for foreign objects to get stuck, the gap becomes larger, and eccentric wear occurs, resulting in the early replacement of the grate plates. Utility Model Content

[0005] In view of the problems mentioned in the background technology that the existing grate plates are corroded by the high-temperature corrosive gases generated during garbage incineration, resulting in larger gaps, increased slag leakage, reduced combustion efficiency, grate plate warping and burning, the utility model proposes a grate plate, a grate frame and a small garbage incinerator. In terms of structural design, a plurality of ribs are added to the grate plates to meet the structural strength, increase the heat dissipation performance, reduce the influence of temperature on the grate plates, and ensure the ventilation rate and cooling degree of the grate. At the same time, the grate plates are designed with two shafts to be connected and fixed, which can prevent the grate plates from eccentric wear and warping to a certain extent, and can meet the use requirements of the garbage incinerator.

[0006] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0007] A grate plate comprises a grate plate cover plate, wherein a fixed axis position and a plurality of mutually parallel ribs are provided at the lower end of the grate plate cover plate, and ventilation holes are provided at the side ends of the grate plate cover plate; ventilation grooves are provided on the grate plate cover plate; the grate plate is fixed by the fixed axis position, the heat dissipation performance of the grate plate is improved by the ribs, and the ventilation volume of the grate plate is increased by the ventilation holes and the ventilation grooves.

[0008] Preferably, the grate cover plate is U-shaped, and the ribs are longitudinally arranged inside the grate cover plate.

[0009] Preferably, the fixed axial position includes a first axial position and a second axial position; the first axial position is opened on one side of the lower end surface of the grate cover plate; the second axial position is opened at the lower end of the rib plate in the middle position inside the grate cover plate, and through holes are provided on the rib plates at both ends inside the grate cover plate.

[0010] Preferably, the ventilation groove is U-shaped and is arranged at the side end of the grate cover plate, and the ventilation holes are multiple in number and are arranged at the front end of the grate cover plate and are in contact with the combustion material.

[0011] A grate rack adopts any of the above-mentioned grate plates, comprising a square tube, a movable grate rack and a hydraulic cylinder; the square tube and the movable grate rack are both provided with grates, the square tube and the movable grate rack are staggered and arranged in a step-like manner, and the grates are arranged in a stepped manner. The movable grate rack is driven by the hydraulic cylinder to move back and forth to loosen the combustible material on the upper surface of the grate for sufficient combustion.

[0012] Preferably, the grate comprises a static grate and a movable grate; the static grate is arranged on a square tube, and the movable grate is arranged on a movable grate frame.

[0013] Preferably, the static grate and the movable grate are both composed of a plurality of grate pieces, with gaps being left between the grate pieces.

[0014] A small-sized garbage incinerator adopts any of the above-mentioned grate racks.

[0015] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0016] (1) The grate plate of the utility model has a plurality of ribs longitudinally arranged inside the grate plate cover plate, which not only ensures the strength but also increases the heat dissipation performance of the grate; by setting the first axis position and the second axis position, that is, the grate plate is fixed with the middle and tail axes, which can prevent the grate plate from eccentric wear and warping to a certain extent, and can meet the use requirements of the garbage incinerator.

[0017] (2) The grate plate of the utility model increases the ventilation volume of the grate by arranging ventilation grooves and ventilation holes, thereby ensuring the ventilation rate and cooling degree of the grate.

[0018] (3) The grate plate of the utility model has a simple structure. At the same time, the grate plate is made of a special alloy through integral die-casting and is subsequently polished and fine-processed, which improves the accuracy and wear resistance of the grate plate and reduces the production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the grate sheet of the first embodiment of the utility model;

[0020] Figure 2 It is a side schematic diagram of the grate sheet of the first embodiment of the utility model;

[0021] Figure 3 It is a top view of the combination of two grate plates of the first embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure of the grate frame of the second embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the movement of the movable grate of the grate rack in the second embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the overall structure of a small-sized garbage incinerator according to the third embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] Embodiment 1

[0027] like Figure 1-3 As shown, the grate plate provided in the first embodiment has a main structure comprising a grate plate cover plate 1, ribs 2, ventilation holes 5, a fixed axis and ventilation grooves 6; a fixed axis and a plurality of mutually parallel ribs 2 are provided at the lower end of the grate plate cover plate 1, and ventilation holes 5 are provided at the side ends of the grate plate cover plate 1; ventilation grooves 6 are provided on the upper surface of the grate plate cover plate 1; the grate plate is fixed by the fixed axis, the heat dissipation performance of the grate plate is improved by the ribs 2, and the ventilation volume of the grate plate is increased by the ventilation holes 5 and the ventilation grooves 6.

[0028] like Figure 1-3 As shown, the grate cover plate 1 is U-shaped, and ribs 2 are longitudinally arranged inside the grate cover plate 1. There are multiple ribs 2, and the intervals between the ribs 2 are the same.

[0029] The fixed axis position includes a first axis position 3 and a second axis position 4; the first axis position 3 is opened on one side of the lower end surface of the grate cover plate 1; the second axis position 4 is opened at the lower end of the rib plate 2 in the middle position inside the grate cover plate 1, and through holes 7 are provided on the rib plates 2 at both ends inside the grate cover plate 1.

[0030] In this embodiment, the number of ribs 2 is three. The grate plate is a high-temperature working component. By arranging three ribs 2 inside the grate plate cover 1, not only the longitudinal strength of the grate plate is enhanced, but also the heat dissipation performance of the grate can be greatly increased.

[0031] In this embodiment, the grate plate is fixed at the first axis position 3 (fixed at the tail axis) and the second axis position 4 (fixed at both sides of the middle axis), which solves the problem of easy edge warping and wear of the grate plate.

[0032] The ventilation groove 6 is U-shaped and is arranged at the side end of the edge of the upper surface of the grate cover plate 1. There are multiple ventilation holes 5, all of which are arranged at the front end of the grate cover plate 1 and are in contact with the combustion object.

[0033] The grate plates are fitted with gaps, and the gap range of the grate plates is 1-3 mm. In the present embodiment, the gap of the grate plates is 1 mm.

[0034] In this embodiment, the material of the grate plate is common medium silicon ductile iron, which has good casting processability, excellent anti-oxidation performance and relatively low price. The grate plate is cast in one piece, with low manufacturing cost, convenient for mass production and lower maintenance cost.

[0035] In this embodiment, grate plates are used for 12 movable grates and fixed grate plates, and the installation combination is a two-stage reciprocating type. Steps are set between the grates to form a height difference. Through the relative movement between the two types of grate plates, the garbage is continuously turned over and loosened, and the combustible components in the garbage are fully contacted with the combustion air for dry combustion.

[0036] The working principle or use process of the utility model is as follows: first, it is composed of a movable grate sheet and a fixed grate sheet from top to bottom, and the heads of the two are staggered and arranged in a step-like manner. At the same time, the grate sheet is provided with a first axial position 3 and a second axial position 4 to be connected and fixed, which can prevent the grate sheet from being worn eccentrically and tilting to a certain extent. Garbage is burned on each grate sheet cover plate 1, and air enters from the through hole 7 at the lower end of the rib plate 2. The air passes through the rib plate 2 and enters the bottom of the burning garbage through the vent hole 5 and the vent groove 6 for oxygen supplementation, so that the condition for ignition at the bottom is met, and the garbage on the grate sheet cover plate 1 is fully burned. By arranging a plurality of rib plates 2, both the strength is guaranteed and the heat dissipation performance of the grate is increased. Through the relative movement between the movable grate sheet and the fixed grate sheet, the garbage is continuously rolled, stirred and pushed forward.

[0037] Embodiment 2

[0038] like Figure 4-5 As shown, this embodiment adopts the grate frame of the grate sheet in the first embodiment; the main structure includes a square tube 8, a movable grate frame 9 and a hydraulic cylinder 10; grates are arranged on the square tube 8 and the movable grate frame 9, the square tube 8 and the movable grate frame 9 are staggered and arranged in steps, and the grates are arranged in a stepped manner. The hydraulic cylinder 10 is connected to the movable grate frame 9, and the movable grate frame 9 is driven by the hydraulic cylinder 10 to move back and forth to loosen the combustion materials on the upper surface of the grate for sufficient combustion.

[0039] The grate includes a static grate 11 and a movable grate 12; the static grate 11 is arranged on the square tube 8, and the movable grate 12 is arranged on the movable grate frame 9. The static grate 11 and the movable grate 12 are arranged in a staggered manner in a step-like manner. The static grate 11 and the movable grate 12 are composed of a plurality of grate pieces, and there are gaps between the grate pieces. The static grate 11 is kept stationary during the garbage burning process, and the movable grate 12 moves back and forth to roll, stir and push the burning materials on the grate forward, so that the direction of garbage burning

[0040] Embodiment 3

[0041] like Figure 6 As shown, this embodiment is a small-scale garbage incinerator using the grate frame in the second embodiment.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A grate plate, comprising a grate plate cover plate (1), characterized in that: The lower end of the grate plate cover plate (1) is provided with a fixed axis position and a plurality of mutually parallel ribs (2); the side end of the grate plate cover plate (1) is provided with a ventilation hole (5); the grate plate cover plate (1) is provided with a ventilation groove (6); the grate plate is fixed by the fixed axis position, the heat dissipation performance of the grate plate is improved by the ribs (2), and the ventilation volume of the grate plate is increased by the ventilation holes (5) and the ventilation grooves (6).

2. The grate sheet according to claim 1, characterized in that: The grate plate cover plate (1) is U-shaped, and the rib plate (2) is longitudinally arranged inside the grate plate cover plate (1).

3. The grate sheet according to claim 2, characterized in that: The fixed axis position comprises a first axis position (3) and a second axis position (4); the first axis position (3) is opened on one side of the lower end surface of the grate plate cover plate (1); the second axis position (4) is opened at the lower end of the rib plate (2) at the middle position inside the grate plate cover plate (1), and through holes (7) are provided on the rib plates (2) at both ends inside the grate plate cover plate (1).

4. The grate sheet according to claim 1, characterized in that: The ventilation groove (6) is U-shaped and is arranged at the side end of the grate plate cover (1); the ventilation holes (5) are multiple in number and are arranged at the front end of the grate plate cover (1) and are in contact with the combustion object.

5. A grate rack, characterized in that: A grate sheet according to any one of claims 1 to 4 is adopted, comprising a square tube (8), a movable grate frame (9) and a hydraulic cylinder (10); grates are provided on the square tube (8) and the movable grate frame (9); the square tube (8) and the movable grate frame (9) are arranged staggered in a step-like manner, and the grates are arranged in a stepped manner; the movable grate frame (9) is driven by the hydraulic cylinder (10) to move back and forth to loosen the combustible material on the upper surface of the grate for sufficient combustion.

6. The grate rack according to claim 5, characterized in that: The grate comprises a static grate (11) and a movable grate (12); the static grate (11) is arranged on a square tube (8), and the movable grate (12) is arranged on a movable grate frame (9).

7. The grate rack according to claim 6, characterized in that: The static grate (11) and the movable grate (12) are both composed of a plurality of grate plates, with gaps being left between the grate plates.

8. A small-scale garbage incinerator, characterized in that: Adopt any one of claims 5-7 grate rack.

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