A wear protection device for a bucket elevator chute

Abstract

The utility model relates to the technical field of bucket elevator equipment, in view of the problems of the traditional inclined chute being easy to wear and leak material, short service life, existing safety hidden danger and shutdown maintenance risk due to high temperature material scouring, provide a kind of bucket elevator inclined chute anti-abrasion device. It includes both sides steel sheet, add a bottom plate at the top of original lower bottom plate, and the both ends are welded to form a material receiving groove;When the original lower bottom plate wears and leaks material, the leaked material accumulates in the material receiving groove to form a material protection layer, realizing material wear material. The structure makes the chute service life extend to more than 2 years, eliminates the leakage and scalding accident, reduces shutdown maintenance, reduces cost and labor intensity, and is suitable for the bucket elevator scene of chain grate machine serious leakage.

Description

Technical Field

[0001] This utility model relates to the technical field of bucket elevator equipment, and in particular to a wear-resistant device for the inclined chute of a bucket elevator. Background Technology

[0002] Bucket elevators are key equipment in chain grate-rotary kiln production lines, used to transport material leaking from the chain grate head's shovel plate and grate bed to the rotary kiln. Their inclined chutes, serving as material conveying channels, directly withstand the impact and scouring of high-temperature materials.

[0003] The existing technology involves directly welding four 20mm thick steel plates into a cuboid. The original bottom plate and right-angle weld points are constantly subjected to the erosion of materials with temperatures ≥800℃, resulting in rapid wear. Material leakage occurs after only 2-3 months of use. This leakage consists of high-temperature powder or lumpy materials, easily causing burns to workers and increasing the labor intensity of cleaning. Severe leakage requires shutdown for repair welding, increasing the load on another bucket elevator. If the elevator also fails simultaneously, the rotary kiln will shut down, causing significant production losses. Existing technologies that simply thicken the steel plates or replace them with wear-resistant materials do not fundamentally solve the problem of materials directly eroding the steel plates, thus offering limited improvement in lifespan. Utility Model Content

[0004] To address the aforementioned technical problems, a wear-resistant device for the inclined chute of a bucket elevator is provided. The technical means employed in this invention are as follows: A wear-resistant device for an inclined chute of a bucket elevator includes a side plate, a middle plate, a bottom plate, and a sealing plate. The middle plate is set at a preset position at the bottom of the side plate, and the bottom plate is set at the bottom of the side plate. The bottom plate is fully welded to the bottom of the two side plates to form the initial bottom of the inclined chute. The middle plate is set parallel above the bottom plate and welded to the two side plates. The sealing plate is welded to both ends of the bottom plate and the middle plate to seal the gap between them and form a closed receiving trough.

[0005] Furthermore, the distance between the middle plate and the bottom plate is at least 50mm.

[0006] Furthermore, the welding between the base plate and the two side plates is a full weld, and the weld height is 10±2mm.

[0007] Furthermore, the welding of the middle plate to the two side plates is intermittent welding, with a weld spacing of 100±5mm and a weld length of 50±2mm.

[0008] Furthermore, the length of the receiving trough is the same as the overall length of the inclined chute, and the cross-section of the receiving trough is rectangular.

[0009] Furthermore, the upper surface of the middle plate is flush with the inner wall of the inclined chute.

[0010] Furthermore, the inner side of the side plate at the receiving groove is provided with a wear-resistant coating.

[0011] Furthermore, the thickness of the sealing plate is 20~30mm.

[0012] This utility model has the following advantages: 1. When material leakage occurs in the original bottom plate due to erosion, the leaked material enters the receiving trough and gradually accumulates. As production progresses, the original bottom plate (i.e., the middle plate) experiences accelerated wear and may even break completely. At this point, the material directly contacts the accumulated material in the receiving trough, resulting in material abrading material, rather than material abrading the steel plate. The newly added bottom plate (i.e., the base plate) only bears the static pressure of the accumulated material, with almost zero erosion wear, solving the problem of the steel plate being directly impacted in the traditional structure. In actual production, this structure extends the chute's lifespan from 2-3 months to over 2 years, a significant improvement.

[0013] 2. The material receiving trough is fully enclosed by a sealing plate. Even if the original bottom plate (i.e., the middle plate) is completely worn, the leaked material is confined within the material receiving trough and will not spill to the outside. At the same time, the double-layer structure of the newly added bottom plate (i.e., the bottom plate) and the original bottom plate (i.e., the middle plate) forms heavy protection, reducing the probability of material leakage to zero, completely avoiding burn accidents, and effectively reducing the labor intensity of workers cleaning.

[0014] 3. Improvements can be made simply by lengthening the steel plate and welding an additional base plate. There is no need to change the material or add complex parts. The modification cost is low, and the structure is compatible with existing bucket elevators. There is no need to modify the main body of the equipment. The modification cycle is short and can be completed during planned maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model, specifically a cross-sectional view of the inclined chute of the modified bucket elevator.

[0017] In the diagram: 1. Side plate; 2. Middle plate; 3. Bottom plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 As shown in the figure, this utility model embodiment discloses an anti-wear device for the inclined chute of a bucket elevator, including a side plate 1, a middle plate 2, a bottom plate 3, and a sealing plate. The middle plate is set at a preset position at the bottom of the side plate, and the bottom plate is set at the bottom of the side plate. The bottom plate is fully welded to the bottom of the two side plates to form the initial bottom of the inclined chute. The middle plate is parallel to the bottom plate and above it and is welded and fixed to the two side plates. The sealing plate is welded to both ends of the bottom plate and the middle plate to seal the gap between them and form a closed receiving trough.

[0020] Furthermore, the distance between the middle plate and the bottom plate is at least 50mm.

[0021] This utility model is essentially an extension based on the original side plates and middle plates (i.e., the original bottom plates of the prior art). In this embodiment, the steel plates on both sides of the inclined chute of the bucket elevator are extended downward by 50mm. First, the bottom plate at the bottom of the inclined chute is fully welded to the two side plates. Then, a middle plate is welded 50mm above the bottom plate. This middle plate serves as the bottom plate of the inclined chute of the bucket elevator. The 50mm gap between the two bottom plates is sealed at the end by welding with a sealing plate. This is equivalent to adding a 50mm receiving trough under the inclined chute. When the bottom plate of the inclined chute wears and leaks, the leaked material directly enters the lower receiving trough and accumulates continuously. If the bottom plate of the inclined chute is worn and damaged over a long period of time, the material in the inclined chute will directly contact the material in the inclined chute. Because there is a continuous material in the lower receiving trough, the material can avoid direct contact with the steel plate of the lower receiving trough. The material in the receiving trough acts as a protective layer, protecting the steel plate from being eroded and damaged by the pellets.

[0022] Furthermore, the welding between the base plate and the two side plates is a full weld, with a weld height of 10±2mm, to ensure initial sealing.

[0023] Furthermore, the welding of the middle plate to the two side plates is intermittent welding, with a weld spacing of 100±5mm and a weld length of 50±2mm, to avoid deformation of the bottom plate caused by welding stress.

[0024] Furthermore, the length of the receiving trough is the same as the overall length of the inclined chute, and the cross-section of the receiving trough is rectangular. Naturally, its width is the same as the inner width of the inclined chute, and its height is the distance between the aforementioned middle plate and bottom plate.

[0025] Furthermore, the upper surface of the middle plate is flush with the inner wall of the inclined chute to ensure smooth material flow and avoid material jamming.

[0026] Furthermore, the inner side of the side plate at the receiving groove is provided with a wear-resistant coating to enhance the side plate's resistance to erosion.

[0027] Furthermore, the thickness of the sealing plate is 20~30mm, and the welding with the bottom plate, middle plate and side plates is full welding to form a fully enclosed structure to prevent material leakage from overflowing from the end.

[0028] During use, it was found that during the first 0-3 months, the material flowed on the new bottom plate, the original bottom plate was not worn, the receiving trough was empty, and the chute transported normally. Around 3-6 months, the original bottom plate showed localized wear and leakage, which entered the receiving trough and gradually accumulated to a height of 30-40mm. After 6 months, the wear area of ​​the original bottom plate expanded, the receiving trough was filled with material, and the material came into direct contact with the accumulated material. The new bottom plate was only subjected to static pressure and showed no obvious wear. After long-term use, the original bottom plate was completely damaged, but the material in the receiving trough was continuously renewed, forming a stable protective layer, and the chute could still work normally.

[0029] In on-site testing: After applying this structure to a chain grate machine-rotary kiln production line in the factory, the leakage of material from the inclined chute decreased from 3 tons per month to 0, the number of maintenance times decreased from 2 times per month to 0, the cleaning time for workers decreased from 2 hours per day to 0, and the equipment ran continuously for 27 months without downtime, verifying its reliability.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wear-resistant device for the inclined chute of a bucket elevator, characterized in that, It includes side plates, middle plates, bottom plates and sealing plates. The middle plate is set at a preset position at the bottom of the side plates, and the bottom plate is set at the bottom of the side plates. The bottom plate is fully welded to the bottom of the two side plates to form the initial bottom of the inclined chute. The middle plate is set parallel to the bottom plate above the bottom plate and welded to the two side plates. The sealing plate is welded to both ends of the bottom plate and the middle plate to seal the gap between them and form a closed receiving trough.

2. The anti-wear device for the inclined chute of the bucket elevator according to claim 1, characterized in that, The distance between the middle plate and the bottom plate is at least 50mm.

3. The anti-wear device for the inclined chute of the bucket elevator according to claim 1, characterized in that, The welding between the base plate and the two side plates is a full weld, and the weld height is 10±2mm.

4. The elevator trough wear protector of claim 1, wherein, The welding between the middle plate and the two side plates is intermittent welding, with a weld spacing of 100±5mm and a weld length of 50±2mm.

5. The elevator trough wear protector of claim 1, wherein, The length of the receiving trough is the same as the overall length of the inclined chute, and the cross-section of the receiving trough is rectangular.

6. The anti-wear device for the inclined chute of the bucket elevator according to claim 1, characterized in that, The upper surface of the middle plate is flush with the inner wall of the inclined chute.

7. The elevator trough wear protector of claim 1, wherein, The inner side of the side plate at the receiving groove is provided with a wear-resistant coating.

8. The elevator trough wear protector of claim 1, wherein, The thickness of the sealing plate is 20~30mm.

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