Arch breaking scraper and scraper conveyor

Abstract

The utility model discloses an arch breaking scraper and a scraper conveyor, and belongs to the technical field of belt conveyor cleaning equipment. The arch breaking plate comprises an arch breaking plate body, a plurality of arch breaking teeth which are continuously distributed are formed at the bottom of the arch breaking plate body, the arch breaking teeth are used for carrying out arch breaking treatment on hardened materials, and the materials after arch breaking can freely pass through gaps between the adjacent arch breaking teeth. Wherein the ratio of the tooth root width H to the tooth height h of the arch breaking tooth is controlled to be 1-3 times. According to the arch-breaking scraper blade, the tooth height and the tooth root width of the arch-breaking teeth are optimally designed, so that the situation that the service life of the arch-breaking teeth is affected due to the fact that the strength of the arch-breaking teeth is reduced due to the fact that the arch-breaking teeth are too sharp can be effectively prevented; the situation that the space between every two adjacent arch breaking teeth is too large, the arch breaking operation on hardened materials with small hardened areas is missed, and then the arch breaking efficiency is affected can be prevented; therefore, the arch breaking efficiency and the service life can be well considered.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the belt conveyor cleaning equipment technical field, more specifically, relate to a kind of broken arch scraper and scraper. BACKGROUND

[0002] Belt conveyor is widely used in modern large-scale industrial production conveying material equipment, with large flow and uninterrupted working characteristics, can effectively ensure the continuity of industrial production stability.But in actual production process, due to various reasons, belt machine head often has material drop situation, both waste raw materials and not conducive to clean production.The traditional operation is often arranged to clean manually, not only increase labor cost, and due to the space limitation of belt conveyor bottom, leading to the difficulty of manual cleaning, and easily cause safety accidents.

[0003] To solve the problem that manual cleaning belt material drop is time-consuming and laborious and low in safety, some belt conveyor bottom scrapers appear in the market, which are used to replace manual cleaning and collection of belt material drop.Meanwhile, the applicant has been committed to the research and development design and structure optimization of the scraper cleaner.For example, in the patent CN209367201U of the applicant, a belt conveyor bottom cleaner broken arch scraper is disclosed.The scraper cleaner of the application is equipped with a broken arch scraper and a material scraping scraper, wherein the broken arch scraper and the material scraping scraper are connected in parallel by chain string connection, and reciprocate in the bottom of the belt conveyor through the chain.After the material on the belt is scraped off by the material scraping scraper, arch material is likely to appear at the bottom of the belt, and the arch material is dredged by the broken arch scraper and then taken out of the cleaner by the material scraping scraper, so as to achieve the purpose of breaking the arch material.However, after a period of use, it is found that there is a pile of material under the chain, which is easy to lead to floating chain, so that the fallen material cannot be completely scraped off.

[0004] Based on the above shortcomings, the applicant continues to optimize the design. In the patent CN216548062U, a combined scraper for preventing floating chain of belt cleaning machine is disclosed. The application includes a first scraper body and a second scraper body, two ends of the first scraper body are welded with first reinforcing plates, the first reinforcing plates are connected with chain interfaces; the chain interfaces on both sides of the first scraper body and the second scraper body are connected with chains. The combined scraper for preventing floating chain of belt cleaning machine, through welding and through the tooth gap, the accumulated waste is broken arch treatment, and after the two tooth gaps are broken arch, the remaining material is scraped away by the toothless scraper, the toothless scraper moves, the remaining material can be scraped clean, the problem of floating chain caused by accumulation is avoided, the two scrapers are combined together, the broken arch is more complete, and the problem of floating chain is avoided. But the application also has some problems, that is, the service life of the scraper is short, especially the tooth part, which needs to be replaced after a period of use, which not only affects the continuity of production but also increases the cost of parts. Therefore, it has important production practical significance to design a broken arch scraper which takes into account the broken arch efficiency and service life. Content of the utility model

[0005] 1. The problem to be solved

[0006] In view of at least some problems existing in the above prior art, the utility model provides a broken arch scraper and a scraper machine, which aims to solve the problem that the broken arch scraper of the existing scraper machine cannot well balance the broken arch efficiency and service life.

[0007] 2. Technical scheme

[0008] In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

[0009] The broken arch scraper of the utility model comprises a broken arch plate body, the bottom of the broken arch plate body is formed with a plurality of broken arch teeth which are continuously distributed, the broken arch teeth are used for breaking arch treatment of the caked material, and the broken arch material can freely pass through the gap between adjacent broken arch teeth; wherein the tooth height h of the broken arch tooth is 5-15mm; the tooth root width H of the broken arch tooth is 15-25mm, and the ratio of the tooth root width H to the tooth height h is controlled at 1-3 times.

[0010] Further, the cross section of the broken arch tooth is an axisymmetric figure, and the included angle between the two side surfaces is 80-100°.

[0011] Further, the outer surface of the broken arch tooth is formed with a hard layer, the hardness of the hard layer is 300-600HB.

[0012] Further, the broken arch tooth is wear-resistant steel.

[0013] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0014] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0015] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0016] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0017] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0018] Further, the two arch breaking plate bodies are connected by a connecting plate.

[0019] The utility model discloses a kind of arch breaking scrapers, including arch breaking plate body, the bottom of the arch breaking plate body is formed with several arch breaking teeth of continuous distribution, the arch breaking tooth is used to carry out arch breaking treatment to material of clinker, and the material after arch breaking can be freely passed through the gap between adjacent arch breaking teeth;Wherein, the outer surface of the arch breaking tooth is formed with hard layer, the hardness of this hard layer is 360~450HB;And the tooth root width H of the arch breaking tooth is 1.5-2.5 times of arch breaking tooth height h.

[0020] The utility model discloses a kind of scrapers, including, scraper body and the scraper assembly of being set on the scraper body;Wherein, the scraper assembly includes toothed scraper and toothless scraper of interval arrangement, the toothless scraper is the above-mentioned any arch breaking scraper.

[0021] 3, beneficial effects

[0022] Compared with prior art, the utility model has the beneficial effects that:

[0023] (1) the utility model discloses a kind of arch breaking scrapers, by optimizing design to the tooth height and tooth root width of arch breaking tooth, both can effectively prevent arch breaking tooth too sharp and reduce its own strength, to affect its service life;Adjacent arch breaking tooth between again can prevent the spacing too big, and miss the arch breaking operation to some clinker area smaller clinker material, to further affect arch breaking efficiency;So as to be able to well take arch breaking efficiency and service life.

[0024] (2) The utility model discloses a kind of arch breaking scrapers, and the arch breaking tooth is designed as axisymmetric figure as a whole, and the included angle between two isosceles sides is controlled at 80-100 °, so that the arch breaking tooth can be more uniform in stress during arch breaking process, and it is also beneficial to extend its service life.

[0025] (3) The utility model discloses a kind of arch breaking scrapers, and the upper and lower end surfaces of arch breaking plate body are processed with arch breaking tooth, and the arch breaking tooth of one end surface can be replaced to continue to use after being damaged, so as to effectively extend the service life of arch breaking plate body.

[0026] (4) The utility model discloses a kind of arch breaking scrapers, and the arch breaking tooth on the two arch breaking plate bodies is in equal height and staggered distribution, which can effectively avoid arch breaking limitation and omission, to ensure arch breaking efficiency;And the arch breaking tooth on the two arch breaking plate bodies is in alignment and high-low distribution, which is for some serious material to carry out step-by-step arch breaking, while ensuring arch breaking efficiency, try to reduce the damage of arch breaking tooth.

[0027] (5) The utility model discloses a kind of arch breaking scrapers, directly using H-shaped steel for processing, without welding operation, not only processing is more convenient, fast;At the same time, H-shaped steel has higher strength and rigidity, which is also beneficial to extend the service life of arch breaking scraper. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structure schematic view of a kind of arch breaking scraper of the utility model;

[0029] Figure 2 It is Figure 1 It is the structure enlarged schematic view of place A;

[0030] Figure 3 It is another structure schematic view of a kind of arch breaking scraper of the utility model;

[0031] Figure 4 It is the structure schematic view of the arch breaking tooth of two arch breaking plate bodies in the utility model and is in equal height, staggered distribution;

[0032] Figure 5 It is the structure schematic view of the arch breaking tooth of two arch breaking plate bodies in the utility model and is in high-low distribution;

[0033] Figure 6 It is one kind of implementation of the utility model in arch breaking tooth;

[0034] Figure 7 It is the schematic view between the arch breaking tooth and upper contact of conveying belt in the utility model.

[0035] In the figure: 1, arch breaking plate body;11, arch breaking tooth;2, connecting plate. DETAILED DESCRIPTION

[0036] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the drawings.

[0037] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] The present application will be further described below in conjunction with specific embodiments.

[0039] As shown in Figure 1 , Figure 2 , the arch breaking scraper of the present embodiment comprises an arch breaking plate body 1, and a plurality of arch breaking teeth 11 in continuous distribution are formed on the lower end face (with the paper face direction in Figure 1 as the reference) of the arch breaking plate body 1. The arch breaking teeth 11 are mainly used for arch breaking treatment of the material that is cemented, or for scattering treatment of the material that is accumulated together but not cemented, and the material after arch breaking or scattering can freely pass through the gap between adjacent arch breaking teeth 11, so as to facilitate the cleaning of the material by the toothless scraper behind. At the same time, it is worth mentioning that the continuous distribution here means that there is no gap between the tooth roots of adjacent two arch breaking teeth 11.

[0040] In the present embodiment, the ratio of the tooth root width H to the tooth height h of the arch breaking tooth 11 is controlled to be 1-3 times, and is preferably 1.5-2.5 times. For example, 1.6 times, 1.9 times, 2.4 times, etc., so as to take into account the strength and arch breaking efficiency of the arch breaking tooth 11. This is because, under the condition that the tooth height h is constant, if the tooth root width H is too small, the tooth shape of the whole arch breaking tooth 11 will be more sharp, which is not conducive to the guarantee of its own strength. At the same time, since the arch breaking teeth 11 are in continuous distribution, the too small tooth root width H will lead to a small spacing between adjacent arch breaking teeth 11, thus easily causing the material to be stuck. If the tooth root width H is too large, the spacing between adjacent arch breaking teeth 11 will also increase, which can guarantee the strength of the arch breaking tooth 11 itself, and at the same time avoid the phenomenon of material being stuck. However, for some cemented material with small cemented area, it will pass through the space between two arch breaking teeth 11 without contacting the arch breaking tooth 11, so as to fail to complete the arch breaking purpose, and thus affect the arch breaking efficiency of the whole arch breaking scraper.

[0041] The tooth height is generally required to be higher than the height of the boarded material. Meanwhile, based on the strength of the arch breaking tooth 11, the tooth height should be as low as possible. The tooth root width directly affects the tooth spacing of adjacent teeth. Therefore, the tooth root width should be smaller than the distance occupied by the boarded material along the length direction of the arch breaking plate body 1 (which can be defined as the width of the boarded material) to prevent missing part of the boarded material. Meanwhile, considering the strength of the arch breaking tooth 11, the tooth root width should be as large as possible. That is, the tooth height should be as small as possible under the premise of being greater than the height of the boarded material. Meanwhile, the tooth root width should be as large as possible under the premise of being smaller than the width of the boarded material.

[0042] Preferably, the tooth height of the arch breaking tooth 11 is 5-15 mm, for example, 8 mm, 10 mm, 12 mm, etc. The tooth root width of the arch breaking tooth 11 is 15-25 mm, for example, 18 mm, 20 mm, 22 mm, etc. Of course, the tooth height and tooth root width can be adjusted for different materials and different working conditions.

[0043] Further, the cross section of the arch breaking tooth 11 is an axisymmetric figure, for example, a triangle, a trapezoid, a conical shape, a circular truncated cone, etc. Meanwhile, the angle between the two side surfaces of the arch breaking tooth 11 is preferably 80-100°, so that the stress of the arch breaking tooth 11 is more uniform during the arch breaking process, thereby being conducive to reducing the damage degree. It should be noted that the above-mentioned symmetric structure is not strictly geometric symmetry, but allows for a certain processing error.

[0044] Specifically in this embodiment, the tooth root width H of the arch breaking tooth 11 is 20 mm, the tooth height h is 10 mm, and the ratio between them is 2. Meanwhile, the arch breaking tooth 11 as a whole is an isosceles triangle, and the angle α between the two isosceles sides is 90°.

[0045] Reference Figure 7 As shown in the figure, generally, in order to ensure the arch breaking efficiency of the arch breaking tooth 11, the top thereof is usually designed as a sharp spike. However, when the arch breaking tooth 11 in this embodiment is used in cooperation with the scraper cleaning machine, it is arranged below the belt conveyor. Due to the limited space below the belt conveyor, the space is generally about 300 mm (the distance between the return belt and the ground). In some extreme spaces, the space is less than 300 mm. Meanwhile, due to the long length of the conveying belt, which is generally several meters or even tens of meters, the conveying section of the conveying belt is usually supported by the V-shaped rollers. Due to the limited space, the return conveying belt is generally laid flat. Therefore, the return conveying belt will sink to a certain extent. In addition, in order to increase the strength of the conveying belt, steel wires are usually arranged in the belt, thereby increasing the self weight of the conveying belt and further increasing the sinking amount of the conveying belt. At this time, the arch breaking tooth 11 is easy to contact the conveying belt. If the tooth tip of the arch breaking tooth 11 is too sharp, it is easy to scratch or even tear the surface of the belt. Therefore, reference Figure 6As shown, the anti-bridging tooth 11 can adopt a trapezoidal structure so that the top of the anti-bridging tooth 11 is a surface rather than a line or point, thereby reducing damage to the belt. Preferably, the top width of the anti-bridging tooth 11 is 3-8mm. This ensures anti-bridging efficiency while minimizing damage to the belt. Furthermore, the edge of the top of the anti-bridging tooth 11 can be rounded to make the top edge more rounded, further reducing damage to the belt.

[0046] In addition, during the arch-breaking process, the arch-breaking teeth 11 need to ensure that they have a certain scraping strength to overcome the cohesive force and friction between materials and complete the arch-breaking operation. On the other hand, it is also necessary to prevent their hardness from being too high, which would reduce their toughness and make them brittle, making them prone to breakage under arch-breaking force. Therefore, a hard layer is formed on the outer surface of the arch-breaking teeth 11. The hardness of this hard layer (i.e., the surface hardness of the arch-breaking teeth 11) can be controlled within the range of 300 to 600 HB, preferably 360 to 450 HB, for example, 380 HB, 400 HB, 420 HB, etc. This ensures that the arch-breaking teeth 11 have a certain degree of toughness while maintaining a certain scraping strength, making them less prone to breakage.

[0047] In practice, the arch-breaking teeth 11 are usually machined on the arch-breaking plate body 1. That is to say, the surface hardness of the arch-breaking teeth 11 is the same as the surface hardness of the arch-breaking teeth 11. In this case, the arch-breaking plate body 1 can be directly made of wear-resistant steel, such as NM400 wear-resistant steel. Of course, the arch-breaking teeth 11 can also be surface-treated separately to improve their hardness, such as carburizing, nitriding, coating, etc.

[0048] This embodiment of the arch-breaking scraper optimizes the design of the tooth height h and tooth root width H of the arch-breaking teeth 11, achieving a good balance between arch-breaking efficiency and service life. It effectively prevents the arch-breaking teeth 11 from becoming too sharp, thus reducing their strength and ensuring their service life; it also prevents excessive spacing between adjacent arch-breaking teeth 11, which could cause them to miss the arch-breaking operation on some compacted materials with smaller compacted areas, thereby ensuring arch-breaking efficiency.

[0049] refer to Figure 3 As shown, in another embodiment of the arch-breaking scraper, two arch-breaking scraper bodies 1 are arranged parallel to each other front and back, connected by a connecting plate 2, and a certain gap is left between the two arch-breaking scraper bodies 1. The existence of this gap creates a buffer area between the two arch-breaking scraper bodies 1. Preferably, the gap of this buffer area is 20-50mm. On the one hand, it prevents material from accumulating in the buffer area; on the other hand, it can ensure the overall structural strength of the arch-breaking scraper as much as possible.

[0050] Furthermore, anti-arch teeth 11 are machined on both the upper and lower end faces of the two anti-arch plate bodies 1. When the anti-arch teeth 11 on one end face are damaged, the anti-arch teeth 11 on the other end face can be replaced and used again, thereby effectively extending the service life of the anti-arch plate body 1.

[0051] In other words, the arch-breaking scraper in this embodiment has an overall "I"-shaped structure. Preferably, this "I"-shaped structure can be directly selected from hot-rolled H-beams. That is, the web of the H-beam forms the connecting plate 2, and the flanges on both sides form the arch-breaking plate body 1. In this way, no additional welding operation is required between the arch-breaking plate body 1 and the connecting plate 2, which not only simplifies the processing, but also, since the hot-rolled H-beam is integrally formed, the internal stress is less, and it has higher strength and rigidity, which is also conducive to extending the service life of the arch-breaking scraper.

[0052] like Figure 4 As shown, in this embodiment, as one arrangement of the arch-breaking teeth 11, the arch-breaking teeth 11 on the same side end face of the two arch-breaking plate bodies 1 are of equal height and staggered. That is, the tooth shape of the two rows of arch-breaking teeth 11 is consistent, but they are staggered by a certain distance. Preferably, the staggered distance is half the width of the tooth root.

[0053] It should be noted that "front" and "back" here refer to the direction of movement of the arch-breaking scraper. The front arch-breaking teeth 11 first break up the caking of the material. If a small area of ​​caking material passes through the tooth spacing of the front row of arch-breaking teeth 11 without being broken up, the rear row of arch-breaking teeth 11 can then be used to break up the caking, effectively preventing missed arch breaking and ensuring the arch-breaking effect. Alternatively, although the front arch-breaking teeth 11 have broken up the caking material, they have not completely crushed it. In this case, the rear row of arch-breaking teeth 11 can also be used for secondary crushing to further improve the success rate of arch breaking and thus ensure arch-breaking efficiency.

[0054] like Figure 5 As shown, as another distribution method of the arch-breaking teeth 11, the arch-breaking teeth 11 on the same side end face of the two arch-breaking plate bodies 1 are aligned but distributed at different heights. That is, the arch-breaking teeth 11 in the front row and the arch-breaking teeth 11 in the back row correspond one-to-one, and the tooth root width is the same, but the tooth height is different. Among them, the tooth height of the arch-breaking teeth 11 in the front row is lower than that in the back row. When encountering materials with severe caking, the arch-breaking teeth 11 in the front row with lower tooth height are used first to break the arch; then the arch-breaking teeth 11 in the back row with higher tooth height are used for a second arch-breaking. In this way, while ensuring the arch-breaking efficiency, the damage to the arch-breaking teeth 11 in the front row can be minimized.

[0055] The arch-breaking scraper of this embodiment can further ensure arch-breaking efficiency and extend the service life of the arch-breaking scraper by using two sets of arch-breaking teeth 11 in the front and rear to break the arch in stages, and by replacing the upper and lower sets of arch-breaking teeth 11.

[0056] In addition, the embodiment also provides a scraper, which comprises a scraper body and a scraper assembly arranged on the scraper body.

[0057] The above description of the utility model and its embodiments is illustrative rather than restrictive, and the embodiments shown in the drawings are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, without departing from the spirit of the utility model, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. An arch-breaking flight comprising an arch-breaking flight body (1), characterized in that: The bottom of the arch breaking plate body (1) is formed with a plurality of continuously distributed arch breaking teeth (11) for breaking arch of the material, and the broken material can freely pass through the gap between adjacent arch breaking teeth (11); wherein the tooth height h of the arch breaking tooth (11) is 5-15mm; the tooth root width H of the arch breaking tooth (11) is 15-25mm, and the ratio of the tooth root width H to the tooth height h is controlled to be 1-3 times.

2. An arch-breaking doctor according to claim 1, wherein: The cross section of the arch breaking tooth (11) is an axisymmetric figure, and the included angle between two side surfaces is 80-100°.

3. An arch breaking flight as claimed in claim 1, wherein: The outer surface of the arch breaking tooth (11) is formed with a hard layer, and the hardness of the hard layer is 300-600HB.

4. An arch-breaking doctor according to claim 3, wherein: The arch breaking tooth (11) is wear-resistant steel.

5. An arch-breaking flight as claimed in any one of claims 1 to 4, wherein: The two arch breaking plate bodies (1) are connected by a connecting plate (2), and the upper and lower end surfaces of the arch breaking plate body (1) are both processed with the arch breaking teeth (11), and a spacing is left between the two arch breaking plate bodies (1).

6. An arch-breaking doctor according to claim 5, wherein: The arch breaking teeth (11) on the same side end surface of the connecting plate (2) are equally high and distributed in a staggered manner.

7. An arch breaking flight as claimed in claim 5 wherein: The arch breaking teeth (11) on the same side end surface of the connecting plate (2) are aligned and distributed in a non-equal height manner.

8. An arch breaking flight as claimed in claim 5 wherein: The spacing between the two arch breaking plate bodies (1) is 20-50mm.

9. An arch breaking flight as claimed in claim 5 wherein: The arch breaking plate body (1) and the connecting plate (2) are integrally formed by hot-rolled H-shaped steel, the web of the H-shaped steel forms the connecting plate (2), and the flanges form the arch breaking plate body (1).

10. An arch-breaking doctor according to claim 2, wherein: The arch breaking tooth (11) is in the shape of an isosceles triangle, an isosceles trapezoid, or a circular truncated cone.

11. An arch-breaking flight comprising an arch-breaking flight body (1), characterized in that: The bottom of the arch breaking plate body (1) is formed with a plurality of continuously distributed arch breaking teeth (11) for breaking arch of the material, and the broken material can freely pass through the gap between adjacent arch breaking teeth (11); wherein the outer surface of the arch breaking tooth (11) is formed with a hard layer, and the hardness of the hard layer is 360-450HB; and the tooth root width H of the arch breaking tooth (11) is 1.5-2.5 times of the tooth height h of the arch breaking tooth (11).

12. An auger comprising, an auger body and an auger flight assembly disposed on the auger body; wherein, The scraper assembly comprises toothed scrapers and toothless scrapers arranged at intervals, characterized in that the toothless scraper is an arch breaking scraper according to any one of claims 1-11.

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