A wear-resistant scraper conveyor trough based on pulverized coal and its usage method

Abstract

This invention relates to a wear-resistant scraper conveyor trough based on pulverized coal and its usage method. It includes a horizontal intermediate plate with multiple front-to-back troughs arranged on the upper surface of the intermediate plate. These troughs extend laterally and penetrate both ends of the intermediate plate, and are filled with pulverized coal. Utilizing the lubricating properties of pulverized coal, the coal conveyed on the intermediate plate accumulates in the troughs. As the scraper moves, it carries the pulverized coal out of the troughs, creating lubrication between the scraper and the intermediate plate. Simultaneously, when the scraper passes through the troughs, it impacts the portion of the coal lumps exceeding the upper surface of the intermediate plate, breaking them into powder that falls back onto the intermediate plate and into the troughs. This lubrication and replenishment of the pulverized coal reduces wear at the contact points between the intermediate plate and the scraper, thus extending the service life of the intermediate plate.

Description

Technical Field

[0001] This invention relates to the field of scraper conveyor technology, specifically to a scraper conveyor trough with wear resistance based on pulverized coal and its usage method. Background Technology

[0002] Scraper conveyors are commonly used conveying equipment in coal mines. They not only transport coal and materials, but also serve as the running track for coal mining machines. Therefore, they have become an indispensable main piece of equipment in modern coal mining technology. Scraper conveyors use scraper chains to traction and transport coal within the trough.

[0003] The working principle of a scraper conveyor is as follows: the open conveying trough in the middle serves as the coal receiving component, and scrapers are fixed on the chain to form a scraper chain. When the head drive unit starts, it drives the sprocket on the head shaft to rotate, causing the scraper chain to circulate and move the coal along the conveying trough until it is unloaded at the head of the machine.

[0004] The conveying trough of a scraper conveyor is formed by connecting multiple central troughs. The central trough mainly includes side troughs on both sides and a central plate fixedly connected between them. The central plate primarily bears the material and is in direct contact with both the material and the scraper. Friction is most severe between the scraper and the central plate. Therefore, in existing technologies, the contact area between the central plate and the scraper is prone to wear, resulting in a short service life for the central plate. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a simple, long-lasting, wear-resistant scraper conveyor trough based on pulverized coal and its usage method.

[0006] The present invention is achieved through the following technical solution: a wear-resistant scraper conveyor trough based on pulverized coal is provided, including a horizontal middle plate, and a plurality of accommodating troughs arranged in a front-to-back manner are provided on the upper surface of the middle plate. The accommodating troughs extend to the left and right and penetrate through the left and right ends of the middle plate, and are filled with pulverized coal.

[0007] This solution utilizes the principle that pulverized coal has a certain lubricating effect. The pulverized coal conveyed on the intermediate plate is piled up in the receiving trough, so that when the scraper moves, it carries the pulverized coal out of the receiving trough, thereby creating a lubricating effect between the scraper and the intermediate plate. At the same time, when the scraper passes through the receiving trough, it impacts the part of the coal block in the receiving trough that is above the upper surface of the intermediate plate, causing it to break into powder and fall into the intermediate plate and the receiving trough, thus achieving the lubrication and replenishment of pulverized coal.

[0008] As an optimization, the front and rear width of the settling trough is 0.3-1.5 cm. This allows coal powder and small coal particles to fall into the settling trough.

[0009] As an optimization, the cross-section of the settling trough is an inverted trapezoid, which facilitates the entry and exit of pulverized coal.

[0010] As an optimization, the cross-section of the settling trough includes a vertical section, a first arc segment, and a second arc segment arranged sequentially from back to front. The first arc segment bulges downward, and the second arc segment bulges upward. The front end of the second arc segment is tangent to the upper surface of the middle plate, and the front end of the first arc segment is tangent to the rear end of the second arc segment. In this design, the first arc segment bulges downward, thus forming a larger space above it to accommodate coal powder and coal blocks. The second arc segment bulges upward, so that the vertical space gradually decreases as the coal blocks and coal powder move forward from this point, thereby achieving crushing by the scraper. The finer the crushing, the better the lubrication effect.

[0011] As an optimization, multiple interconnected settling tank groups are provided before adjacent receiving settling tanks. Each interconnected settling tank includes multiple horizontally arranged connecting settling tanks, each comprising a front-to-back diffusion section and a crushing section. The lateral width of the crushing section gradually decreases from back to front, while the lateral width of the diffusion section gradually increases from back to front. The front-to-back length of the crushing section is greater than that of the diffusion section. In this scheme, pulverized coal enters the connecting settling tank and is moved forward by scrapers. In the crushing section, the reduced width causes it to be compressed into powder, which is then dispersed in the diffusion section and falls into the receiving settling tank, thus replenishing the pulverized coal.

[0012] As an optimization, the depth of the pulverizing section gradually decreases from back to front, while the depth of the diffusion section gradually increases from back to front. This improves both the pulverizing effect of the pulverizing section and the diffusion effect of the diffusion section.

[0013] As an optimization, the connecting troughs in adjacent connecting trough groups are arranged alternately on the left and right sides. This improves the coal powder crushing effect in the width direction.

[0014] As an optimization, the depth of the connecting settling trough is less than the depth of the receiving settling trough. This facilitates the entry of the pulverized coal into the receiving settling trough.

[0015] A method for using the groove in the middle of a scraper chain:

[0016] The scraper moves from back to front on the middle plate, and the coal block is located between adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. When the coal block moves, the coal powder falls into the receiving trough. When the scraper moves, it carries the coal powder out of the receiving trough, thus forming a lubricating effect between the scraper and the middle plate.

[0017] When the scraper passes through the settling trough, it impacts the portion of the coal block in the settling trough that extends beyond the upper surface of the intermediate plate, causing it to break into powder and fall into the intermediate plate and the settling trough, thus achieving the lubrication and replenishment of the coal powder.

[0018] As an optimization, pulverized coal enters the connecting settling tank and is moved forward by the action of scrapers. In the crushing section, the reduced width space causes it to be squeezed into powder, and after being dispersed in the diffusion section, it falls into the settling tank to replenish the pulverized coal.

[0019] The beneficial effects of this invention are as follows: This invention provides a wear-resistant scraper conveyor trough based on pulverized coal and its usage method. Utilizing the principle that pulverized coal has a certain lubricating effect, the pulverized coal conveyed on the intermediate plate is accumulated in a receiving trough. This allows the scraper to carry the pulverized coal out of the receiving trough as it moves, thus creating a lubricating effect between the scraper and the intermediate plate. Simultaneously, when the scraper passes through the receiving trough, it impacts the portion of the coal block in the trough that extends beyond the upper surface of the intermediate plate, causing it to break into powder that falls onto the intermediate plate and into the receiving trough. This achieves lubrication and replenishment of the pulverized coal, thereby reducing wear at the contact point between the intermediate plate and the scraper and improving the service life of the intermediate plate. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 2 This is a top view of the plate in this invention;

[0022] Figure 3 In Embodiment 1 of the present invention Figure 2 Sectional view of plane AA;

[0023] Figure 4 In Embodiment 2 of the present invention Figure 2 Sectional view of plane AA;

[0024] Figure 5 For the present invention Figure 4 A magnified view of a portion of the image;

[0025] Figure 6 This is a top view of the connecting trough in this invention;

[0026] As shown in the figure:

[0027] 1. Middle plate, 2. Settling tank, 3. Connecting settling tank, 31. Crushing section, 32. Diffusion section, 21. Vertical section, 22. First arc section, 23. Second arc section. Detailed Implementation

[0028] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0029] Example 1:

[0030] like Figures 1-6As shown, the present invention provides a wear-resistant scraper conveyor trough based on pulverized coal, comprising a horizontal central plate 1, wherein scrapers move from back to front on the central plate 1, thereby driving coal blocks to be conveyed from the central plate 1.

[0031] The upper surface of the middle plate 1 is provided with a plurality of receiving grooves 2 arranged in front and behind. The receiving grooves 2 extend to the left and right and penetrate through the left and right ends of the middle plate 1, that is, the left and right ends of the receiving grooves 2 are aligned with the left and right ends of the middle plate 1 respectively.

[0032] The settling trough 2 is filled with pulverized coal, which is deposited during the transportation of coal blocks.

[0033] The cross-section of the settling tank 2 is an inverted trapezoid and an isosceles trapezoid. The front-to-back width of the settling tank 2 is 0.3-1.5 cm, and the front-to-back width of the bottom of the settling tank 2 is 0.1-1 cm.

[0034] Multiple connecting sump groups are provided before adjacent receiving sump 2. Each connecting sump group includes multiple connecting sump 3 arranged left and right, with the connecting sump 3 in adjacent connecting sump groups alternating left and right. The front end of the connecting sump 3 is connected to the receiving sump 2 in front, and the rear end of the connecting sump 3 is connected to the receiving sump 2 behind. The depth of the connecting sump 3 is less than the depth of the receiving sump 2.

[0035] The connecting settling tank 3 includes a diffusion section 32 and a crushing section 31 connected front to back. The width of the crushing section 31 gradually decreases from back to front, and the depth of the crushing section 31 gradually decreases from back to front.

[0036] The width of the diffusion segment 32 gradually increases from back to front, and the depth of the diffusion segment 32 gradually increases from back to front.

[0037] The reduced width and depth of the crushing section 31 compresses the coal into powder, which then falls into the settling trough 2 after being dispersed in the diffusion section 32. The front-to-back length of the crushing section 31 is greater than that of the diffusion section 32, thus allowing the coal to be fully crushed and dispersed rapidly.

[0038] Example 2: Figure 4 , 5 As shown,

[0039] The difference between this embodiment and Embodiment 1 is that the cross-sectional shape of the receiving trough 2 is different.

[0040] In this embodiment, the cross-section of the receiving trough 2 includes a vertical segment 21, a first arc segment 22, and a second arc segment 23 arranged sequentially from back to front. The vertical segment 21 is arranged vertically, the first arc segment 22 protrudes downward, and the second arc segment 23 protrudes upward. The front end of the second arc segment 23 is tangent to the upper end surface of the middle plate 1, and the front end of the first arc segment 22 is tangent to the rear end of the second arc segment 23.

[0041] A method for using the groove in the middle of a scraper chain:

[0042] The scraper moves from back to front on the middle plate 1, and the coal block is located between the adjacent scrapers. The movement of the scraper realizes the movement of the coal block on the middle plate. When the coal block moves, the coal powder falls into the receiving trough 2. When the scraper moves, it carries the coal powder out of the receiving trough 2, thus forming a lubricating effect between the scraper and the middle plate.

[0043] When the scraper passes through the receiving trough 2, it impacts the portion of the coal block in the receiving trough 2 that extends beyond the upper surface of the middle plate, causing it to break into powder and fall into the middle plate and the receiving trough 2, thus achieving the lubrication and replenishment of the coal powder.

[0044] Coal powder enters the connecting settling tank 3 and is moved forward by the action of scrapers. In the crushing section 31, the reduced width of the space causes it to be squeezed into powder, and after being dispersed in the diffusion section 32, it falls into the receiving settling tank 2 to replenish the coal powder.

[0045] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A middle trough of a scraper conveyor based on coal dust to achieve wear resistance, comprising a horizontal middle plate (1), characterized in that: The upper surface of the middle plate (1) is provided with a plurality of accommodating sinks (2) arranged in front and behind. The accommodating sinks (2) extend to the left and right and penetrate the left and right ends of the middle plate (1). The accommodating sinks (2) are filled with coal powder. Multiple interconnected sedimentation tank groups are provided between adjacent sedimentation tanks (2). The interconnected sedimentation tank groups include multiple interconnected sedimentation tanks (3) arranged left and right. Each interconnected sedimentation tank (3) includes a diffusion section (32) and a crushing section (31) connected front and back. The left and right width of the crushing section (31) gradually decreases from back to front, while the left and right width of the diffusion section (32) gradually increases from back to front. The front and back length of the crushing section (31) is greater than the front and back length of the diffusion section (32).

2. The middle trough of the scraper conveyor based on the coal powder to realize the wear resistance according to claim 1, characterized in that: The front and back width of the receiving trough (2) is 0.3-1.5cm.

3. The middle trough of the scraper conveyor based on the coal powder to realize the wear resistance according to claim 1, characterized in that: The cross-section of the receiving trough (2) is an inverted trapezoid.

4. The middle trough of the scraper conveyor based on the coal powder to realize the wear resistance according to claim 1, characterized in that: The cross section of the receiving trough (2) includes a vertical section (21), a first arc section (22), and a second arc section (23) arranged sequentially from back to front. The first arc section (22) protrudes downward, and the second arc section (23) protrudes upward. The front end of the second arc section (23) is tangent to the upper surface of the middle plate (1), and the front end of the first arc section (22) is tangent to the rear end of the second arc section (23).

5. The middle trough of the scraper conveyor based on the pulverized coal to realize the wear resistance according to claim 1, characterized in that: The depth of the crushing section (31) gradually decreases from back to front, while the depth of the diffusion section (32) gradually increases from back to front.

6. The wear-resistant scraper conveyor trough based on pulverized coal as described in claim 1, characterized in that: The connecting sump (3) in the adjacent connecting sump group is set alternately on the left and right.

7. The wear-resistant scraper conveyor trough based on pulverized coal as described in claim 1, characterized in that: The depth of the connecting trough (3) is less than the depth of the containing trough (2).

8. A method of using the middle trough of the scraper conveyor as described in claim 1, characterized in that: The scraper moves from back to front on the middle plate (1), and the coal block is located between adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. When the coal block moves, the coal powder falls into the receiving trough (2). When the scraper moves, it carries the coal powder out of the receiving trough (2), thus forming a lubricating effect between the scraper and the middle plate. When the scraper passes through the receiving trough (2), it impacts the portion of the coal block in the receiving trough (2) that exceeds the upper surface of the middle plate, causing it to break into powder and fall into the middle plate and the receiving trough (2), thereby achieving the lubrication and replenishment of the coal powder.

9. The method of use according to claim 8, characterized in that: Coal powder enters the connecting settling tank (3) and is driven forward by the scraper. In the crushing section (31), the width space is reduced, causing it to be squeezed into powder. After being dispersed in the diffusion section (32), it falls into the settling tank (2) to replenish the coal powder.

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