A coal slime scraper assembly for a scraper and a coal slime scraper

Abstract

The utility model discloses a scraper device for scraper, belongs to scraper equipment technical field, and it includes chute, chain and multiple scraper groups that are sequentially arranged along the chain operation direction, and the scraper group includes multiple bottom reinforced scraper and multiple scraper spade block, multiple bottom reinforced scraper are sequentially spaced apart along the operation direction of chain, and at least one scraper spade block is provided on every bottom reinforced scraper, and the scraper spade block is set in the bottom of bottom reinforced scraper along the length of bottom reinforced scraper, and the scraper spade block on the adjacent bottom reinforced scraper is set staggeredly, so that the path of the scraper spade block on the bottom reinforced scraper is staggered at least partially. The utility model discloses the combination design of multiple special-shaped scraper, effectively improves the stress distribution of scraper and material, realizes dynamic circulation scraping, significantly improves the cleaning scraping effect and the running stability, prevents the material residue and the chain phenomenon, and avoids the problem that the existing rolling coating structure is easily blocked by sticky material.

Description

Technical Field

[0001] This utility model relates to the technical field of coal preparation plant production equipment, specifically to a coal slime scraper assembly for a scraper conveyor and a coal slime scraper conveyor. Background Technology

[0002] In the production process of coal preparation plants, material transfer is crucial, with commonly used equipment including belt conveyors and scraper conveyors. However, for small-particle-size coal slime with high moisture content, its high viscosity and strong adhesion make belt conveyors unsuitable due to the tendency for material to adhere to the conveyor belt surface or slip, significantly reducing transfer efficiency. In actual production, coal preparation plants generally rely on scraper conveyors for coal slime transfer. However, existing scraper conveyors have significant drawbacks when handling such materials: the high viscosity of coal slime easily leads to uneven accumulation in the chute, increasing chain running resistance and causing unbalanced force distribution, frequently resulting in chain slippage (i.e., the chain deviating from its intended track) or even chain breakage. These problems not only cause frequent interruptions in the transfer process, affecting production continuity, but also significantly increase equipment maintenance burden and downtime, making it difficult for scraper conveyors to maintain long-term stable operation, and ultimately failing to meet the requirements for high efficiency and reliability in overall transfer performance. Utility Model Content

[0003] The purpose of this application is to provide a coal slurry scraper assembly and a coal slurry scraper for a scraper conveyor, which can effectively reduce the accumulation of coal slurry in the chute, reduce the chain running resistance, prevent chain drift and breakage, thereby improving the transmission efficiency and equipment stability.

[0004] This application provides a coal slime scraper assembly for a scraper conveyor, the technical solution of which is as follows:

[0005] A scraper assembly for a scraper conveyor includes: a chute, a chain, and a plurality of scraper groups arranged sequentially along the running direction of the chain. The chain and the scraper groups are detachably and fixedly connected, and the chain is used to drag the scraper groups to move in the chute along the running direction of the chain, thereby moving the material in the chute.

[0006] The scraper assembly includes multiple bottom reinforcing scrapers and multiple scraper blocks. The multiple bottom reinforcing scrapers are arranged sequentially at intervals along the running direction of the chain, and each bottom reinforcing scraper is provided with at least one scraper block. The scraper blocks are arranged at the bottom of the bottom reinforcing scraper along the length direction of the bottom reinforcing scraper. The scraper blocks on adjacent bottom reinforcing scrapers are staggered, so that the scraping paths of the scraper blocks on the bottom reinforcing scrapers are at least partially staggered.

[0007] Furthermore, this application also proposes a coal slime scraper assembly for a scraper conveyor, comprising three bottom reinforcing scrapers, namely a first bottom reinforcing scraper, a second bottom reinforcing scraper, and a third bottom reinforcing scraper.

[0008] The first bottom reinforcing scraper is equipped with two scraper blocks.

[0009] The first bottom reinforcing scraper divides its bottom into five equal parts along its length from one end to the other: the first part, the second part, the third part, the fourth part, and the fifth part. Two scraper blocks are respectively set on the first part and the fifth part.

[0010] Two scraper blocks are also provided on the second bottom reinforcing scraper. The bottom of the second bottom reinforcing scraper is divided into the first, second, third, fourth and fifth equal parts along its length from one end to the other. The two scraper blocks are respectively provided on the second and fourth equal parts.

[0011] The third bottom reinforced scraper also has a scraper block.

[0012] The third bottom reinforcing scraper divides its bottom into five equal parts along its length, from one end to the other: the first, the second, the third, the fourth, and the fifth. A scraper block is set on the third part.

[0013] Furthermore, this application also proposes a coal slurry scraper assembly for a scraper conveyor, wherein the length of the scraper block is not less than the length of one of the five equal parts of the first bottom reinforcing scraper, the second bottom reinforcing scraper, or the third bottom reinforcing scraper.

[0014] Furthermore, this application also proposes a coal slime scraper assembly for a scraper conveyor. The scraper assembly includes multiple front-side reinforcing scrapers and multiple dispersing strips. The multiple front-side reinforcing scrapers are arranged sequentially at intervals along the running direction of the chain. Each front-side reinforcing scraper is provided with two dispersing strips, which are respectively arranged on the front side wall of the left side of the front-side reinforcing scraper and on the front side wall of the right side of the front-side reinforcing scraper.

[0015] Furthermore, this application also proposes a coal slime scraper assembly for a scraper conveyor.

[0016] There are two front-side reinforcing scrapers, namely the first front-side reinforcing scraper and the second front-side reinforcing scraper.

[0017] The dispersion strips on the left front side wall of the first front reinforcing scraper are inclined toward the middle of the first front reinforcing scraper, and the dispersion strips on the right front side wall of the first front reinforcing scraper are also inclined toward the middle of the first front reinforcing scraper.

[0018] The dispersion strips on the left front side wall of the second front reinforcing scraper are inclined outwards from the second front reinforcing scraper, and the dispersion strips on the right front side wall of the second front reinforcing scraper are also inclined outwards from the second front reinforcing scraper.

[0019] Furthermore, this application also proposes a coal slurry scraper assembly for a scraper conveyor, wherein both the bottom reinforcing scraper and the front reinforcing scraper are square cavity structure scrapers.

[0020] Furthermore, this application also proposes a coal slurry scraper assembly for a scraper conveyor, wherein both the bottom reinforcing scraper and the front reinforcing scraper are made of 40Cr forged steel after quenching treatment.

[0021] Furthermore, this application also proposes a coal slime scraper, which includes the aforementioned scraper assembly, support frame, cover plate and drive device. The support frame is used to support the chute, the cover plate is disposed above the chute, the drive device is mounted on the support frame and is used to drive the chain to move the scraper assembly. One end of the chute is provided with a feed inlet and the other end of the chute is provided with a discharge outlet.

[0022] As can be seen from the above, the coal slurry scraper assembly and coal slurry scraper provided in this application, by setting multiple scraper groups, wherein the scraper blocks are staggered and reinforced, can uniformly scrape materials, reduce coal slurry accumulation in the chute, reduce chain running resistance, prevent chain drift and breakage, and have the advantages of improving transmission efficiency and equipment stability. Attached Figure Description

[0023] Figure 1 This is a top view of the cover plate after the coal slime scraper machine cuts the coal slime in this embodiment of the present invention.

[0024] Figure 2 This is a bottom view of the chute after the coal slime scraper machine has cut the chute in this embodiment of the present invention;

[0025] Figure 3 This is a bottom view of the bottom reinforcing scraper in an embodiment of this utility model;

[0026] Figure 4 This is a bottom view of the front reinforcing scraper in an embodiment of the present invention;

[0027] Figure 5 This is a side view of the first front-side reinforcing scraper in an embodiment of the present utility model;

[0028] Figure 6 This is a side view of the second front-side reinforcing scraper in an embodiment of the present invention;

[0029] Explanation of reference numerals in the attached figures:

[0030] 100—Cheet; 200—Chain; and 300—Scraper assembly;

[0031] 310—Bottom reinforcement scraper; 311—First bottom reinforcement scraper;

[0032] 312—Second bottom reinforcing scraper; 313—Third bottom reinforcing scraper;

[0033] 320—Scraper block; 330—Front side reinforced scraper;

[0034] 331—First front reinforcing scraper; 332—Second front reinforcing scraper;

[0035] 340—Dispersion bar; 410—Support frame; 420—Cover plate;

[0036] 430—Drive device; 440—Feed inlet; 450—Discharge outlet. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Traditional scraper conveyors in coal preparation plants are prone to problems such as chain slippage and even breakage when transporting coal slime with high viscosity and moisture content. This results in insufficient material conveying efficiency, which is detrimental to the long-term stable operation of the equipment and affects production efficiency.

[0040] To address this issue, this application proposes a coal slime scraper assembly for a scraper conveyor. By improving the structure and layout of the scraper assembly 300, it solves the problem of coal slime transport in the prior art. Figures 1 to 3As shown, the component includes a chute 100, a chain 200, and multiple scraper groups 300 arranged sequentially along the running direction of the chain 200. The chain 200 is detachably and fixedly connected to the scraper groups 300, and the chain 200 is used to drag the scraper groups 300 within the chute 100 along the running direction of the chain 200, thereby moving the material within the chute 100. The scraper groups 300 include multiple bottom reinforcing scrapers 310 and multiple scraper blocks 320. The multiple bottom reinforcing scrapers 310 are arranged sequentially at intervals along the running direction of the chain 200, and each bottom reinforcing scraper 310 is provided with at least one scraper block 320. The scraper blocks 320 are arranged along the length direction of the bottom reinforcing scraper 310 at the bottom of the bottom reinforcing scraper 310, and the scraper blocks 320 on adjacent bottom reinforcing scrapers 310 are staggered, so that the scraping paths of the scraper blocks 320 on the bottom reinforcing scraper 310 are at least partially staggered.

[0041] For ease of understanding, the following explains some key terms in this embodiment:

[0042] Coal slime scraper assembly for scraper conveyors: This assembly is the main working part of the scraper conveyor and is specially designed to achieve high-efficiency transmission of coal slime materials with high viscosity and high water content. Its structural improvements are aimed at improving transmission efficiency and reducing operational failures.

[0043] Chute 100: As a material transport channel, chute 100 is usually U-shaped or rectangular, providing guidance and support for the operation of scraper assembly 300, and ensuring that the material moves stably in it.

[0044] Chain 200: As the traction component of scraper assembly 300, chain 200 is connected to the drive device to provide power to drag scraper assembly 300 to move in a preset direction within chute 100, thereby realizing continuous material conveying.

[0045] Scraper assembly 300: A collection of multiple scraper units whose main function is to directly contact and push the coal slurry material in the chute 100, and is the main actuator for material transfer.

[0046] Bottom reinforced scraper 310: As a scraper unit in the scraper assembly 300, the bottom reinforced scraper 310 is mainly responsible for scraping and pushing the coal slime at the bottom of the chute 100. Its structural design aims to improve the scraping ability of sticky materials.

[0047] Scraper block 320: A protruding structure set at the bottom of the bottom reinforcing scraper 310. The scraper block 320 is in direct contact with the coal slime material. Through its preset shape and layout, it further improves the scraping efficiency of the coal slime adhering to the bottom of the chute 100 and reduces material residue.

[0048] This application provides a coal slime scraper assembly for a scraper conveyor, whose structural design aims to improve the conveying process of coal slime materials. The assembly mainly includes a chute 100, a chain 200, and multiple scraper groups 300 arranged sequentially along the running direction of the chain 200. The chute 100, serving as the material carrying channel, can be made of welded or cast steel plates, and its cross-sectional shape can be rectangular, U-shaped, or semi-circular to adapt to different material characteristics and conveying requirements. The chain 200, as the traction component, can be composed of a single-row chain or a double-row chain, and its material and strength can be selected according to the conveying load, for example, using an alloy steel chain made of high-strength wear-resistant material. The scraper groups 300 are detachably fixed to the chain 200, for example, by bolts, pins, or clips. In this embodiment, U-bolts are used to connect to the chain 200, which facilitates quick replacement and maintenance when worn or damaged, improving the availability of the equipment. Under the action of the drive device, the chain 200 drags the scraper assembly 300 to move along the running direction of the chain 200 in the chute 100, thereby realizing the continuous pushing and conveying of coal slime material in the chute 100.

[0049] The scraper assembly 300 has a specially designed structure, comprising multiple bottom-reinforcing scrapers 310 and multiple scraper blocks 320. The multiple bottom-reinforcing scrapers 310 are arranged sequentially at intervals along the running direction of the chain 200. This interval arrangement helps to disperse localized stress during scraping and allows for a certain degree of material flow between the scrapers. The number of bottom-reinforcing scrapers 310 can be configured according to the total length of the scraper conveyor and the conveying efficiency requirements; for example, one, two, or more bottom-reinforcing scrapers 310 can be used. Each bottom-reinforcing scraper 310 is provided with at least one scraper block 320, which is arranged along the length of the bottom-reinforcing scraper 310 at its bottom. The scraper blocks 320 can be rectangular in shape and can be made of commonly used flat iron. Their length can cover a portion or most of the bottom area of ​​the bottom-reinforcing scraper 310, and their width and height can be designed according to the requirements for scraper strength and wear resistance. For example, the scraper block 320 can be made of wear-resistant material and fixed to the bottom of the bottom reinforcing scraper 310 by welding or bolting.

[0050] To further improve scraping efficiency and reduce material accumulation, the scraper blocks 320 on adjacent bottom reinforcing scrapers 310 are designed to be staggered. Specifically, if a scraper block 320 on one bottom reinforcing scraper 310 is located in the left-side region of its bottom, then the scraper blocks 320 on its adjacent bottom reinforcing scraper 310 can be located in the middle or right-side region of its bottom. This staggered layout ensures that the scraping paths of the scraper blocks 320 on the bottom reinforcing scrapers 310 are at least partially staggered. For example, when the first bottom reinforcing scraper 310 scrapes the material on the left side of the bottom of the chute 100, the scraper block 320 on the second bottom reinforcing scraper 310 can scrape the material in the right or middle region of the bottom of the chute 100. Thus, by scraping the bottom of the chute 100 in multiple regions with non-overlapping or partially overlapping scraping by the scraper blocks 320 on different scrapers, repeated accumulation of material in specific areas can be effectively avoided, scraping resistance can be reduced, and the coal slime at the bottom of the chute 100 can be effectively removed.

[0051] The scraper assembly for coal slurry in this application, through the improved design of the bottom reinforced scraper 310 and scraper block 320 in the scraper assembly 300, especially the bottom setting of the scraper block 320 and the staggered layout of adjacent scraper blocks 320, effectively improves the scraping ability for high-viscosity coal slurry. This effectively reduces the adhesion and accumulation of coal slurry at the bottom of the chute 100, lowers the operating load on the chain 200, and thus solves the problems of chain drifting and chain breakage that easily occur in existing scraper conveyors when transporting coal slurry, improving the stability and efficiency of coal slurry transport.

[0052] In some of the embodiments described above in this application, a bottom-reinforced scraper is proposed for scraping coal slurry in the chute. However, in the implementation process, the scraper blocks may not be evenly distributed or fully covered, resulting in material residue or low cleaning efficiency, which affects the overall stability and transmission effect of the scraper assembly.

[0053] In this regard, such as Figure 3As shown, this application further proposes a coal slime scraper assembly for a scraper conveyor, wherein the number of bottom reinforcing scrapers 310 is three, namely a first bottom reinforcing scraper 311, a second bottom reinforcing scraper 312, and a third bottom reinforcing scraper 313. Specifically, the first bottom reinforcing scraper 311 is provided with two scraper blocks 320. The bottom of the first bottom reinforcing scraper 311 is divided into a first, second, third, fourth, and fifth equal parts along its length direction from one end to the other. The two scraper blocks 320 are respectively disposed on the first and fifth equal parts. The second bottom reinforcing scraper 312 is also provided with two scraper blocks 320. The bottom of the second bottom reinforcing scraper 312 is divided into a first, second, third, fourth and fifth equal parts along its length from one end to the other. The two scraper blocks 320 are respectively provided on the second and fourth equal parts. The third bottom reinforcing scraper 313 is also provided with one scraper block 320. The bottom of the third bottom reinforcing scraper 313 is divided into a first, second, third, fourth and fifth equal parts along its length from one end to the other. The scraper block 320 is provided on the third equal part.

[0054] In this embodiment, the first bottom reinforcing scraper 311, the second bottom reinforcing scraper 312, and the third bottom reinforcing scraper 313 have the same external dimensions, all being 710mm × 118mm × 98mm, with a hole spacing of 130mm. The scraper block 320 has dimensions of 250mm × 30mm × 25mm.

[0055] The number of bottom reinforcing scrapers 310 is set to three to provide multi-point scraping capability, effectively addressing the adhesion and accumulation of coal slime material within the chute 100. In practical applications, the number of bottom reinforcing scrapers 310 can be adjusted according to the width of the chute 100, material characteristics, and required scraping intensity. For example, two bottom reinforcing scrapers can be used for narrower chutes or light scraping requirements, while four or more bottom reinforcing scrapers can be used for wider chutes or high-intensity scraping requirements. This application selects three bottom reinforcing scrapers 310 to balance scraping coverage with structural complexity and manufacturing cost. These three bottom reinforcing scrapers 310 are named First Bottom Reinforcing Scraper 311, Second Bottom Reinforcing Scraper 312, and Third Bottom Reinforcing Scraper 313, respectively, to clearly distinguish their respective configurations and functions in design and implementation. This distinction allows each scraper to support different scraper block 320 arrangement patterns, thereby working collaboratively to form an overall optimized scraping system. Besides the differences in the arrangement of the scraper blocks 320, these bottom reinforcing scrapers 310 can also differ in size, material, or structure in other embodiments to adapt to specific scraping requirements. The placement of the scraper blocks 320 is determined by dividing the length of the bottom reinforcing scraper 310 into multiple equal parts, such as five equal parts in this embodiment. This division method allows the scraper blocks 320 to be precisely positioned, thereby achieving a preset scraping path and coverage pattern. By adjusting the number of equal parts, for example, dividing it into three equal parts to achieve a coarser scraping distribution, or dividing it into seven equal parts to achieve a finer scraping coverage, different scraping precision requirements can be flexibly adapted. In this application, the scraper blocks 320 are respectively arranged on the first, fifth, second, fourth, and third equal parts, aiming to ensure mutual complementarity and comprehensive coverage of the scraping path through this staggered arrangement.

[0056] Through the above technical solution, the bottom reinforcing scraper 310 is subdivided into three independent units with specific scraper block 320 arrangement patterns, achieving precise and all-round scraping of the material at the bottom of the chute 100. The scraper blocks 320 on the first bottom reinforcing scraper 311 cover the areas at both ends of the scraper, effectively preventing material accumulation at the edges; the scraper blocks 320 on the second bottom reinforcing scraper 312 cover the outer middle area, staggering the scraping path of the first bottom reinforcing scraper 311 to avoid path overlap; and the scraper blocks 320 on the third bottom reinforcing scraper 313 precisely cover the central area, filling any scraping gaps that the first two scrapers may leave. This carefully designed staggered arrangement of scraper blocks 320 ensures that the bottom of the chute 100 is scraped evenly and thoroughly when the three bottom reinforcing scrapers 310 work together, significantly reducing the residue of coal slime and avoiding chain drifting or breakage problems caused by material accumulation. Therefore, the scraper assembly for coal slurry conveying of the scraper conveyor of this application can effectively improve the efficiency and stability of coal slurry conveying, extend the service life of the equipment, and thus optimize the overall stability and conveying effect of the scraper assembly.

[0057] like Figure 2 and Figure 4 As shown, this application further proposes that the scraper assembly 300 includes a plurality of front reinforcing scrapers 330 and a plurality of dispersing strips 340. The plurality of front reinforcing scrapers 330 are arranged sequentially at intervals along the running direction of the chain 200. Each front reinforcing scraper 330 is provided with two dispersing strips 340, which are respectively arranged on the front side wall on the left side of the front reinforcing scraper 330 and on the front side wall on the right side of the front reinforcing scraper 330.

[0058] The front reinforced scraper 330, as an important component of the scraper assembly 300, primarily functions to contact the front sidewall of the chute 100 to scrape or disperse material adhering to the sidewall. The "reinforced" characteristic of this scraper is reflected in its structural design or material selection to address the adhesion and abrasiveness of high-viscosity coal slime. For example, the front reinforced scraper 330 can be made of high-strength wear-resistant steel, or, as described in subsequent embodiments, employ a square cavity structure and be made of 40Cr forged steel after quenching treatment to improve its deformation resistance and service life. Furthermore, it can also be made of polymer composite materials or ceramic composite materials to adapt to different working conditions. The dispersion strip 340 is a functional structure provided on the front reinforced scraper 330. Its core function is to effectively prevent material from adhering to the front sidewall of the chute 100, or to disperse already adhered material, through physical contact and agitation. The dispersing strips 340 can take various forms, such as a series of raised ridges, toothed structures, wavy structures, or brush-like structures made of wear-resistant rubber, high-strength plastic, or metal. These structures are designed to increase the contact area and agitation effect with the material, thereby reducing material adhesion. Multiple front-side reinforcing scrapers 330 are arranged at intervals along the running direction of the chain 200. This interval arrangement ensures that during the operation of the scraper conveyor, the front-side reinforcing scrapers 330 can continuously scrape and disperse the front sidewall of the chute 100 at a certain frequency and coverage area. By arranging them at intervals along the running direction of the chain 200, uniform cleaning of the sidewalls along the entire conveying path can be achieved, avoiding localized material accumulation. Simultaneously, the interval arrangement also helps reduce the overall resistance during the operation of the scraper assembly 300 and provides sufficient flow space for the material between the scrapers, preventing excessive compression. Each front-side reinforcing scraper 330 is equipped with two dispersing strips 340, designed to improve the dispersion efficiency and coverage of the material by a single scraper. This configuration allows each scraper to more effectively act on the material on both sides of the chute 100 as it passes through, enhancing the removal capability of adhering coal slime. Two dispersing strips 340 are respectively positioned on the left and right front walls of the front reinforcing scraper 330. This symmetrical and separate arrangement ensures that the front reinforcing scraper 330 can simultaneously and evenly handle the adhering material on both sides of the chute 100 when scraping material. By placing the dispersing strips 340 on the left and right front walls respectively, simultaneous and effective cleaning and material dispersion of both walls can be achieved, avoiding material imbalance or uneven cleaning caused by unilateral action. The dispersing strips 340 can be securely connected to the corresponding positions of the front reinforcing scraper 330 by welding, bolting, riveting, or integral molding.

[0059] By incorporating dispersing strips 340 on the front reinforced scraper 330, this application effectively solves the problem of high-viscosity coal slime adhesion to the front wall of the chute 100. Specifically, multiple front reinforced scrapers 330 are arranged sequentially at intervals along the running direction of the chain 200, ensuring continuous action on the front wall of the chute 100 throughout the entire conveying path and preventing localized material accumulation. Each front reinforced scraper 330 is equipped with two dispersing strips 340, located on its left and right front walls respectively. This symmetrical arrangement allows the dispersing strips 340 to effectively disperse the coal slime adhering to the side walls of the chute 100 through physical disturbance and scraping action. This significantly reduces the frictional resistance during scraper conveyor operation, reduces the risk of blockage due to material adhesion, thereby avoiding problems such as chain drift or even chain breakage, and greatly improving the stability and reliability of the scraper conveyor in conveying high-viscosity coal slime. Based on the scraper assembly 300, which already includes a bottom reinforcing scraper 310 and a scraper block 320 for scraping the material at the bottom, a front reinforcing scraper 330 and a dispersing bar 340 are added to form an all-round cleaning and material dispersion mechanism for the bottom and side walls of the chute 100, further improving the efficiency and reliability of the scraper conveyor when conveying high-viscosity coal slime.

[0060] In some embodiments described above in this application, a scraper assembly is proposed, including a bottom reinforced scraper and a scraper block, to scrape the material at the bottom of the chute and drive it to move. However, in its implementation, the material tends to accumulate on the front side, resulting in uneven dispersion and reduced transmission efficiency, thereby causing the risk of chain drift or chain breakage.

[0061] In response, this application further proposes a coal slime scraper assembly for a scraper conveyor, wherein the scraper assembly 300 includes multiple front-side reinforcing scrapers 330 and multiple dispersing strips 340. The multiple front-side reinforcing scrapers 330 are arranged sequentially at intervals along the running direction of the chain 200. Each front-side reinforcing scraper 330 is provided with two dispersing strips 340, which are respectively arranged on the front side wall of the left side of the front-side reinforcing scraper 330 and the front side wall of the right side of the front-side reinforcing scraper 330.

[0062] The front reinforcing scraper 330 is a structure used to actively contact and push materials during the operation of the scraper assembly 300. Its design aims to effectively handle materials that may accumulate in front of the scraper assembly 300, preventing material from forming obstructions. The front reinforcing scraper 330 can be a solid plate structure or a structure with specific cavities, such as a square cavity structure, to reduce weight while ensuring strength. Its material is typically a high-strength, wear-resistant metal, such as 40Cr forged steel, and may be hardened to further improve its hardness and wear resistance. The dispersing strip 340 is an auxiliary structure set on the front reinforcing scraper 330. Its main function is to break up and disperse material accumulation in front of the scraper, promoting uniform material flow. The dispersing strip 340 can be a strip, block, or wing-shaped structure, and its surface can be smooth or textured to enhance the dispersing effect. Its material is usually the same as the front reinforcing scraper 330 to ensure overall durability. Multiple front-side reinforced scrapers 330 are arranged at intervals along the running direction of the chain 200. This interval arrangement ensures continuous contact between the front-side reinforced scrapers 330 and the material, preventing the formation of untreated areas between the scrapers and ensuring continuous material management. Simultaneously, the interval arrangement helps reduce the overall resistance of the scraper assembly 300 during operation and provides sufficient flow space for the material. Each front-side reinforced scraper 330 is equipped with two dispersing strips 340, located on the left and right front sidewalls of the scraper 330, respectively. This symmetrical arrangement on the front sidewalls allows the dispersing strips 340 to directly act on the material in front of the scraper assembly 300, dispersing the material from both sides simultaneously, ensuring uniform material distribution along the width of the scraper and preventing localized accumulation.

[0063] Through the above technical solution, the scraper assembly 300, based on its original bottom scraper function, adds the ability to actively manage the material in front. Multiple front-side reinforced scrapers 330 are spaced apart along the chain 200's running direction, ensuring continuous contact and pushing of the material in front, effectively preventing large accumulations of material on the front side of the scraper assembly 300. Simultaneously, two symmetrically arranged dispersion strips 340 on each front-side reinforced scraper 330 can effectively disperse and guide the material from both sides, breaking up material adhesion and agglomeration, and promoting uniform distribution and smooth flow of material within the chute 100. This significantly reduces the problem of uneven dispersion caused by material accumulation on the front side, improves the conveying efficiency of coal slime, and effectively avoids the risk of chain drift or breakage caused by excessive material resistance, thus ensuring the long-term stable operation of the scraper conveyor.

[0064] In some of the embodiments described above in this application, a front-side reinforced scraper is proposed to set a dispersion strip to disperse the material in order to improve the conveying of coal slime. However, in the process of its implementation, the tilt direction of the dispersion strip is not optimized, which may lead to uneven material dispersion or local accumulation, affecting the conveying efficiency and stability, thereby exacerbating the risk of chain drift or chain breakage.

[0065] In this regard, this application further proposes that there are two front reinforcing scrapers 330, namely a first front reinforcing scraper 331 and a second front reinforcing scraper 332. Specifically, the dispersion strips 340 on the left front sidewall of the first front reinforcing scraper 331 are inclined towards the center of the first front reinforcing scraper 331, and the dispersion strips 340 on the right front sidewall of the first front reinforcing scraper 331 are also inclined towards the center of the first front reinforcing scraper 331. Simultaneously, the dispersion strips 340 on the left front sidewall of the second front reinforcing scraper 332 are inclined outwards from the second front reinforcing scraper 332, and the dispersion strips 340 on the right front sidewall of the second front reinforcing scraper 332 are also inclined outwards from the second front reinforcing scraper 332.

[0066] In this embodiment, the first front reinforcing scraper 331 and the second front reinforcing scraper 332 have the same structural dimensions, with an outer dimension of 710mm×118mm×98mm and a hole spacing of 130mm. They contact the material surface in the forward running direction, are divided into three equal parts, and the two ends are arranged diagonally in a figure-eight shape or an inverted figure-eight shape, with 250mm×30mm×25mm dispersion strips 340 welded to each part.

[0067] Specifically, two front-side reinforcing scrapers 330 are provided to offer multi-point material dispersion capabilities. These two front-side reinforcing scrapers 330 can be arranged in series along the running direction of the chain 200, for example, one in front and one behind, forming a two-stage dispersion effect, thereby enhancing the coverage and precision of material handling. Alternatively, these two front-side reinforcing scrapers 330 can also be arranged side-by-side or staggered within the scraper assembly 300 through a specific connection structure to cover a wider material handling area, ensuring comprehensive action on the material within the chute 100.

[0068] The dispersing strips 340 on the first front-side reinforcing scraper 331 are inclined towards the center to guide the material on both sides of the scraper towards the central area, preventing material accumulation at the edge of the chute 100. These dispersing strips 340 can be a fixed-angle inclined plate structure, welded or bolted to the front wall of the first front-side reinforcing scraper 331, and their inclination angle can be preset according to the viscosity and flowability of the coal slime. Alternatively, the dispersing strips 340 can be designed with an adjustable angle, for example, through hinges and locking mechanisms, to flexibly adjust their inclination angle towards the center under different operating conditions, thereby optimizing the material concentration effect.

[0069] The dispersing strips 340 on the second front reinforcing scraper 332 are inclined outwards. Their function is to push the material in the central area of ​​the scraper to both sides, preventing excessive accumulation or blockage of material in the central area of ​​the chute 100. The dispersing strips 340 can be integrally molded, with the outwardly inclined guide surface directly formed during the manufacturing of the second front reinforcing scraper 332, ensuring its structural strength and stability. Alternatively, the dispersing strips 340 can be modular, installed on the second front reinforcing scraper 332 via snap-fit ​​or plug-in methods, and their outward inclination angle and length can be customized or replaced according to actual needs.

[0070] Through the above technical solution, this application achieves refined management of coal slime by setting two front-side reinforced scrapers 330 and employing different tilting strategies for the dispersing strips 340 on them. The dispersing strips 340 on the first front-side reinforced scraper 331 are tilted towards the center, which can effectively gather the coal slime on both sides of the chute 100 towards the central area, avoiding the accumulation of material in the edge area, thereby reducing the frictional resistance between the scraper and the sidewall of the chute. The dispersing strips 340 on the second front-side reinforced scraper 332, which follows, are tilted outwards, which can evenly diffuse the coal slime in the central area to both sides, preventing the material from forming a high-density accumulation in the center of the chute 100 and avoiding material blockage in front of the scraper assembly 300. This alternating dispersion strategy of central concentration and outward diffusion ensures that the coal slime material is evenly distributed across the entire width of the chute 100, significantly improving the efficiency and stability of material transmission. The uniformity of material distribution reduces the local resistance experienced by the scraper assembly 300 during operation, thereby effectively reducing the risk of chain 200 drifting or even breaking and extending the service life of the scraper conveyor.

[0071] In some of the embodiments described above in this application, bottom reinforced scrapers and front reinforced scrapers are proposed to enhance scraper strength and material conveying effect. However, in the implementation process, the scraper structure may not be robust enough and may easily deform or break when conveying high-viscosity coal slime, leading to problems such as chain drift or even chain breakage.

[0072] In this regard, this application further proposes that both the bottom reinforcing scraper 310 and the front reinforcing scraper 330 are square cavity structure scrapers.

[0073] A square cavity scraper refers to a scraper body with one or more square or near-square closed cavities. This structure, through optimized material distribution, significantly improves the scraper's resistance to bending, torsion, and impact while maintaining or reducing overall weight. Specifically, a square cavity scraper can be implemented in the following ways: One method is to assemble the scraper from multiple metal plates (e.g., top plate, bottom plate, and side plates) by welding, riveting, or bolting to form a hollow square cavity. This method allows for flexible adjustment of cavity size and wall thickness to meet different strength requirements. Another method is to form the scraper into a monolithic structure with square cavities using a one-piece molding process (e.g., casting or forging followed by internal hollowing). This one-piece molding method reduces connecting parts, improves structural integrity and sealing, thereby further enhancing the scraper's durability and corrosion resistance.

[0074] Through the above technical solutions, both the bottom reinforced scraper 310 and the front reinforced scraper 330 adopt a square cavity structure, significantly improving the overall strength and rigidity of the scrapers. This structural design enables the scrapers to effectively resist deformation and breakage when subjected to the enormous shear and impact forces generated during the transport of high-viscosity coal slime. Specifically, the square cavity structure, through optimized material distribution, provides excellent bending and torsional resistance while ensuring lightweight construction, thereby ensuring stable operation of the scrapers under harsh working conditions. Given that the bottom reinforced scraper 310 and the front reinforced scraper 330 are key components in the scraper assembly 300 that directly contact the coal slime and bear the main load, the improvement of their strength is directly related to the reliability of the entire coal slime scraper assembly for the scraper conveyor. Therefore, the adoption of a square cavity structure not only enhances the durability of individual scrapers but also fundamentally solves the problem of scrapers easily deforming or breaking when transporting high-viscosity coal slime, thereby effectively avoiding chain drifting or even chain breakage, and greatly improving the transport efficiency and long-term operational stability of the coal slime scraper assembly for the scraper conveyor.

[0075] In some of the embodiments described above in this application, a square cavity structure scraper is proposed to enhance the strength and stability of the scraper. However, during the process of conveying high-viscosity coal slime, the scraper material may be easily damaged due to long-term wear and impact, leading to scraper assembly failure and affecting the long-term stable operation of the equipment.

[0076] In this regard, this application further proposes that the bottom reinforcing scraper 310 and the front reinforcing scraper 330 are both made of 40Cr forged steel after quenching treatment.

[0077] Specifically, both the bottom reinforcing scraper 310 and the front reinforcing scraper 330 are made of 40Cr forged steel. 40Cr forged steel is a commonly used alloy structural steel with high strength, hardness, and good toughness, capable of withstanding significant impact loads and wear. Besides 40Cr forged steel, other high-strength, high-wear-resistant alloy steels, such as 35CrMo and 42CrMo, can also be used. These materials also provide excellent mechanical properties after forging. Alternatively, high-manganese steel can be considered, as its surface undergoes work hardening under impact loads, thereby improving wear resistance. Simultaneously, both the bottom reinforcing scraper 310 and the front reinforcing scraper 330 are manufactured through quenching treatment. Quenching is a heat treatment process that involves heating steel to its austenitizing temperature and then rapidly cooling it to obtain a martensitic or bainitic structure, thereby significantly improving the steel's hardness, strength, and wear resistance. The specific process parameters for quenching, such as heating temperature, holding time, cooling medium, and cooling rate, can be adjusted according to the specific composition of the 40Cr forged steel and the desired final properties. For example, oil quenching, water quenching, or polymer quenching can be used. In addition, tempering is usually required after quenching to eliminate quenching stress, improve toughness, and adjust the hardness to the optimal working state.

[0078] Through the aforementioned technical solution, the bottom reinforced scraper 310 and the front reinforced scraper 330 are made of 40Cr forged steel through quenching treatment, significantly improving the durability and wear resistance of the scrapers, thereby effectively solving the problem of scraper damage during coal slime transport. Specifically, 40Cr forged steel itself has high strength characteristics and can withstand the impact and friction from high-viscosity coal slime, which is crucial for the complex stresses borne by the scraper when dragging materials within the chute 100. Simultaneously, after quenching treatment, the hardness and wear resistance of the material are further enhanced, making the scraper less prone to deformation or breakage during long-term operation. This combination of material and processing technology ensures that the scraper assembly maintains stable performance under harsh working conditions, effectively reducing the risk of chain drift or even chain breakage during coal slime transport, ultimately extending the service life of the equipment and improving the reliability and stability of the scraper conveyor operation. In particular, when the scraper adopts a square cavity structure, it already has good strength and stability. On this basis, the use of 40Cr forged steel and quenching treatment further enhances the overall performance of the scraper, enabling it to provide more durable and reliable support when facing the wear and impact of high-viscosity coal slime, thereby ensuring that the scraper conveyor can operate stably for a long time.

[0079] In some of the solutions mentioned above in this application, a coal slurry scraper assembly for a scraper conveyor is proposed to improve the coal slurry conveying effect and reduce chain drift and chain breakage problems. However, when constructing a complete scraper conveyor system, it is necessary to solve problems such as how to effectively support the chute structure, cover the chute to prevent material splashing, stably drive the chain to move the scraper assembly, and define the material flow path, so as to ensure the long-term stable operation of the entire conveying process and avoid low conveying efficiency and equipment failure caused by insufficient support, external interference or unstable power.

[0080] In response, this application proposes a coal slime scraper, which includes a coal slime scraper assembly, a support frame 410, a cover plate 420, and a drive device 430 as described above. The support frame 410 supports the chute 100, the cover plate 420 is disposed above the chute 100, and the drive device 430 is mounted on the support frame 410 and is used to drive the chain 200 to move the scraper assembly 300. One end of the chute 100 is provided with a feed inlet 440, and the other end of the chute 100 is provided with a discharge outlet 450.

[0081] Specifically, the coal slime scraper assembly for the coal slime scraper conveyor is the core transmission component of the entire coal slime scraper conveyor. Its design aims to efficiently transport coal slime and reduce the risk of chain drift and breakage. This assembly integrates an optimized scraper group 300 structure, such as a combination of a bottom reinforcing scraper 310 and a scraper block 320, as well as a front reinforcing scraper 330 and a dispersing strip 340 configuration, to adapt to the viscous characteristics of coal slime, ensuring effective scraping and dispersion of the material, thereby improving transmission efficiency and equipment operational stability.

[0082] The support frame 410 is a structural component used to support and fix the chute 100, and its main function is to provide a stable foundation for the entire transmission system. The support frame 410 can be implemented in various forms. For example, it can be designed as a rigid frame structure welded from H-beams or channel steel, connected to the chute 100 by bolts or welding to ensure its structural integrity under heavy load and vibration conditions; or it can adopt a modular design, consisting of multiple support units with adjustable height and angle, assembled by connectors to adapt to different installation environments and terrain conditions, while facilitating the installation, commissioning and maintenance of the equipment.

[0083] The cover plate 420 is positioned above the chute 100. Its main function is to cover the transmission channel, preventing material from splashing and overflowing during transmission, and also preventing external impurities from entering the chute 100, thereby ensuring a clean operating environment and smooth transmission. The cover plate 420 can be designed as a segmented, openable structure, connected to the support frame 410 or the chute 100 via hinges or slide rails, facilitating internal inspection and cleaning; alternatively, it can be a one-piece sealed cover plate, tightly connected to the chute 100 via bolts or clips, providing a stronger sealing effect, particularly suitable for applications with high dust control requirements.

[0084] The drive device 430 is mounted on the support frame 410 and is used to provide power to the chain 200, enabling it to drive the scraper assembly 300 to move within the chute 100. The drive device 430 can be implemented in various ways. For example, it can employ a motor-reducer-sprocket transmission combination, where the motor provides the initial power, the reducer converts the high-speed, low-torque power into low-speed, high-torque power, and then the sprocket engages with the chain 200 to directly drive the chain 200. This method has the advantages of compact structure and high transmission efficiency. Alternatively, a hydraulic motor drive system can be used, where a hydraulic pump provides high-pressure hydraulic oil to drive the hydraulic motor to rotate, and the hydraulic motor then drives the chain 200 through the sprocket. This method features a wide speed range and strong overload protection, making it suitable for heavy-load starts and frequent start-stop conditions.

[0085] One end of the chute 100 is provided with a feed inlet 440 for guiding coal slime material into the conveying system. The feed inlet 440 can be designed as a funnel-shaped structure with a larger opening at the top and a gradually narrowing bottom, which can effectively collect the material falling from the top and smoothly guide it into the chute 100, reducing material accumulation and overflow; alternatively, a guide plate can be provided inside the feed inlet 440 to ensure that the material can be evenly distributed at the bottom of the chute 100, avoiding local impact and wear, thereby extending the service life of the chute 100.

[0086] The other end of the chute 100 is provided with a discharge port 450 for discharging the coal slime material pushed by the scraper assembly 300 from the transmission system. The discharge port 450 can be designed as an open structure, allowing the material to be discharged freely under the continuous pushing of the scraper assembly 300, which is simple and reliable. Alternatively, a controllable discharge gate can be provided at the discharge port 450, and the discharge rate can be adjusted or intermittent discharge can be achieved by opening and closing the gate, thereby improving the flexibility and control accuracy of material handling.

[0087] Through the above technical solutions, the coal slime scraper conveyor provides stable support for the chute 100 via the support frame 410, effectively preventing the chute 100 from shaking or shifting during operation, thereby ensuring the stable operation of the chain 200 and reducing the risk of chain drift and breakage. The cover plate 420 effectively blocks material splashing and the entry of external impurities, improving operational safety and environmental cleanliness, and reducing transmission interruptions caused by material overflow. The drive unit 430 is mounted on the support frame 410, ensuring the stability and reliability of power transmission, enabling the chain 200 to smoothly drive the scraper assembly 300, further reducing the possibility of chain breakage. The reasonable setting of the feed inlet 440 and discharge outlet 450 clarifies the material flow path, ensuring that the coal slime can smoothly enter and exit the system. These components work in conjunction with the coal slime scraper assembly of the scraper conveyor to jointly construct a stable, reliable, and precisely controlled coal slime scraper conveyor system. This effectively solves problems such as insufficient support, external interference, and unstable power during coal slime transport, significantly improving the efficiency of coal slime transport and the long-term stable operation of the equipment.

[0088] The following example will provide a more detailed explanation of the above technical solution:

[0089] In the coal slime processing area of ​​a coal preparation plant, high-moisture, high-viscosity coal slime needs to be transported from the feed inlet 440 to the discharge outlet 450. When traditional scraper conveyors process this type of coal slime, the strong adhesion of the slime makes it easy to accumulate at the bottom of the chute, which increases the running resistance of the chain 200, causing the chain 200 to float or even break, affecting the continuity and stability of production.

[0090] To address this issue, the coal preparation plant introduced a new type of coal slime scraper. This scraper includes a support frame 410, a cover plate 420, a drive unit 430, and a coal slime scraper assembly. The support frame 410 provides stable support for the chute 100, and the cover plate 420 is positioned above the chute 100 to prevent coal slime from splashing. The drive unit 430, mounted on the support frame 410, provides power, and the drive chain 200 moves the scraper assembly 300 within the chute 100.

[0091] The scraper assembly for this scraper conveyor is key to solving the problem of coal slime transport. It includes a chute 100, a chain 200, and multiple scraper assemblies 300 arranged sequentially along the running direction of the chain 200. The chain 200 and the scraper assemblies 300 are detachably connected for easy maintenance and replacement. Driven by the drive unit 430, the chain 200 drags the scraper assemblies 300 within the chute 100 along the running direction of the chain 200, thereby moving the coal slime material within the chute 100.

[0092] The design of each scraper assembly 300 is its core innovation. It includes multiple bottom reinforcing scrapers 310 and multiple scraper blocks 320, as well as multiple front reinforcing scrapers 330 and multiple dispersion strips 340.

[0093] First, in the scraper assembly 300, multiple bottom-reinforcing scrapers 310 are arranged sequentially at intervals along the running direction of the chain 200. These bottom-reinforcing scrapers 310 are all square-cavity scrapers, made of 40Cr forged steel through quenching treatment, possessing high strength and wear resistance. Each bottom-reinforcing scraper 310 has at least one scraper block 320 at its bottom. The scraper block 320 is arranged along the length of the bottom-reinforcing scraper 310, and its length is not less than the length of one equal segment of the bottom-reinforcing scraper 310.

[0094] Specifically, there are three bottom reinforcing scrapers 310, namely a first bottom reinforcing scraper 311, a second bottom reinforcing scraper 312 and a third bottom reinforcing scraper 313.

[0095] Two scraper blocks 320 are provided on the first bottom reinforcing scraper 311. The scraper divides its bottom into five equal parts along its length, and the two scraper blocks 320 are respectively provided on the first and fifth equal parts.

[0096] Two scraper blocks 320 are also provided on the second bottom reinforcing scraper 312. The scraper divides its bottom into five equal parts along its length, and the two scraper blocks 320 are respectively provided on the second and fourth equal parts.

[0097] A scraper block 320 is provided on the third bottom reinforcing scraper 313. The scraper divides its bottom into five equal parts along its length, and a scraper block 320 is provided on the third equal part.

[0098] The staggered arrangement of the scraper blocks 320 is key to solving the problem of coal slime adhesion. When the scraper assembly 300 moves within the chute 100, the scraper blocks 320 on adjacent bottom reinforcing scrapers 310 are staggered, ensuring that their scraping paths are at least partially offset. This means that in the area traversed by the scraper assembly 300, the coal slime at the bottom of the chute 100 is not pushed by a single, continuous scraping action, but rather is scraped and disturbed multiple times at multiple points by the scraper blocks 320 at different locations. This staggered scraping method effectively loosens and removes the coal slime adhering to the bottom of the chute 100, reducing coal slime accumulation and significantly reducing the resistance of the chain 200 during operation. Compared to traditional scraper conveyors where the scraper bottom is flat or the scraper blocks are arranged in a single pattern, this solution, through multi-point, staggered scraping, avoids the formation of a continuous resistance surface in front of the scraper, effectively preventing the chain 200 from floating or breaking due to excessive resistance.

[0099] In addition, the scraper assembly 300 also includes multiple front-side reinforcing scrapers 330 and multiple dispersion bars 340. The multiple front-side reinforcing scrapers 330 are also arranged sequentially at intervals along the running direction of the chain 200, and are also square-cavity scraper structures made of 40Cr forged steel after quenching. Each front-side reinforcing scraper 330 is provided with two dispersion bars 340, respectively located on the left and right front sidewalls of the front-side reinforcing scraper 330.

[0100] There are two front reinforcing scrapers 330, namely the first front reinforcing scraper 331 and the second front reinforcing scraper 332.

[0101] The dispersing strips 340 on the left front sidewall of the first front reinforced scraper 331 are inclined towards the center of the first front reinforced scraper 331, and the dispersing strips 340 on the right front sidewall are also inclined towards the center of the first front reinforced scraper 331. This design helps to gather the coal slime in front of the scraper towards the center, improving conveying efficiency.

[0102] The dispersion strips 340 on the left front sidewall of the second front reinforced scraper 332 are inclined outwards from the second front reinforced scraper 332, and the dispersion strips 340 on the right front sidewall are also inclined outwards from the second front reinforced scraper 332. This design helps to disperse some of the coal slime to both sides, avoiding excessive accumulation in front of the scraper and further reducing operating resistance.

[0103] By effectively removing coal sludge from the bottom of the chute 100 through the staggered scraper blocks 320 on the bottom reinforced scraper 310, and by rationally guiding and dispersing the coal sludge in front through the dispersion strips 340 on the front reinforced scraper 330, the entire scraper assembly 300 can maintain low operating resistance when conveying high-viscosity coal sludge. This allows the chain 200 to run smoothly, avoiding the chain drift and breakage problems common in traditional scraper conveyors, thus ensuring the long-term stability and efficiency of the coal sludge conveying process.

[0104] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A coal slime scraper assembly for a scraper conveyor, characterized in that, include: The chute (100), chain (200), and multiple scraper groups (300) arranged sequentially along the running direction of the chain (200) are provided. The chain (200) and the scraper groups (300) are detachably and fixedly connected. The chain (200) is used to drag the scraper groups (300) to move within the chute (100) along the running direction of the chain (200), thereby moving the material within the chute (100). The scraper assembly (300) includes a plurality of bottom reinforcing scrapers (310) and a plurality of scraper blocks (320). The plurality of bottom reinforcing scrapers (310) are arranged sequentially at intervals along the running direction of the chain (200), and each bottom reinforcing scraper (310) is provided with at least one scraper block (320). The scraper blocks (320) are arranged along the length of the bottom reinforcing scraper (310) at the bottom of the bottom reinforcing scraper (310). The scraper blocks (320) on adjacent bottom reinforcing scrapers (310) are staggered from each other, so that the scraping paths of the scraper blocks (320) on the bottom reinforcing scraper (310) are at least partially staggered from each other.

2. The coal slime scraper assembly for a scraper conveyor according to claim 1, characterized in that: The number of bottom reinforcing scrapers (310) is three, namely the first bottom reinforcing scraper (311), the second bottom reinforcing scraper (312) and the third bottom reinforcing scraper (313). Two scraper blocks (320) are provided on the first bottom reinforcing scraper (311). The first bottom reinforcing scraper (311) divides its bottom into a first, second, third, fourth and fifth equal parts along its length from one end to the other. The two scraper blocks (320) are respectively disposed on the first and fifth equal parts. The second bottom reinforcing scraper (312) is also provided with two scraper blocks (320). The second bottom reinforcing scraper (312) divides its bottom into a first, second, third, fourth and fifth equal parts along its length direction from one end to the other. The two scraper blocks (320) are respectively provided on the second and fourth equal parts. The third bottom reinforcing scraper (313) is also provided with a scraper block (320). The third bottom reinforcing scraper (313) divides its bottom into a first, second, third, fourth and fifth equal parts along its length from one end to the other, and a scraper block (320) is disposed on the third equal part.

3. The coal slime scraper assembly for a scraper conveyor according to claim 2, characterized in that: The length of the scraper block (320) is not less than the length of one of the five equal parts of the first bottom reinforcing scraper (311), the second bottom reinforcing scraper (312), or the third bottom reinforcing scraper (313).

4. A coal slime scraper assembly for a scraper conveyor according to claim 1 or 3, characterized in that: The scraper assembly (300) includes multiple front-side reinforcing scrapers (330) and multiple dispersing strips (340). The multiple front-side reinforcing scrapers (330) are arranged sequentially at intervals along the running direction of the chain (200). Each front-side reinforcing scraper (330) is provided with two dispersing strips (340). The two dispersing strips (340) are respectively arranged on the front side wall on the left side of the front-side reinforcing scraper (330) and on the front side wall on the right side of the front-side reinforcing scraper (330).

5. A coal slime scraper assembly for a scraper conveyor according to claim 4, characterized in that: The number of the front reinforcing scrapers (330) is two, namely the first front reinforcing scraper (331) and the second front reinforcing scraper (332). The dispersion strip (340) provided on the left front side wall of the first front reinforcing scraper (331) is inclined towards the middle of the first front reinforcing scraper (331), and the dispersion strip (340) provided on the right front side wall of the first front reinforcing scraper (331) is also inclined towards the middle of the first front reinforcing scraper (331). The dispersion strip (340) provided on the left front side wall of the second front reinforcing scraper (332) is inclined to the outside of the second front reinforcing scraper (332), and the dispersion strip (340) provided on the right front side wall of the second front reinforcing scraper (332) is also inclined to the outside of the second front reinforcing scraper (332).

6. A coal slime scraper assembly for a scraper conveyor according to claim 5, characterized in that: Both the bottom reinforcing scraper (310) and the front reinforcing scraper (330) are square cavity structure scrapers.

7. A coal slime scraper assembly for a scraper conveyor according to claim 6, characterized in that: Both the bottom reinforcing scraper (310) and the front reinforcing scraper (330) are made of 40Cr forged steel after quenching treatment.

8. A coal slime scraper conveyor, characterized in that: The coal slurry scraper includes a coal slurry scraper assembly, a support frame (410), a cover plate (420), and a drive device (430) as described in claim 7. The support frame (410) is used to support the chute (100). The cover plate (420) is disposed above the chute (100). The drive device (430) is mounted on the support frame (410) and is used to drive the chain (200) to move the scraper assembly (300). One end of the chute (100) is provided with a feed inlet (440), and the other end of the chute (100) is provided with a discharge outlet (450).

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