Belt conveyor belt bottom cleaning device

Abstract

The utility model discloses a belt cleaning device at the bottom of belt conveyor, including the belt cleaning mechanism of installing at the bottom position of belt conveyor frame, belt cleaning mechanism includes a plurality of scraper subassembly, and scraper subassembly includes scraper and the support of installing scraper, and the support is slidably installed with the turnover shaft structure through the elastic sliding structure, and the turnover shaft structure is positioned after rotating through the turnover positioning structure. The above structure realizes the cleaning to the bottom of belt in the buffer, adjustable mode, realizes the protection belt while improving the cleaning efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of belt cleaning technology for belt conveyors, and in particular relates to a belt bottom cleaning device for belt conveyors. Background Technology

[0002] The main structure of a belt conveyor includes a frame, belt drums mounted at both ends of the frame, a belt driving between the belt drums, and idlers supporting the belt and mounted on the frame. During material transport, material is fed from the chute onto the belt, and the belt carries the material to the other end of the frame before unloading from the belt drum. However, in actual operation, due to the material's viscosity, especially when it is sticky, and the belt's anti-slip structure designed to increase friction, some material adheres to the belt after reaching the belt drum (unloading position), a phenomenon commonly known as material backflow.

[0003] Material retracing causes material to adhere to the belt. As the amount of material adhered increases, the weight of the belt increases while the amount of material transported decreases. In particular, the increased weight of the belt causes the lower end of the belt to tend to sink downwards. If the high-speed rotating belt sinks and scrapes against the frame, it can easily tear the belt over a long distance.

[0004] Therefore, existing technologies use structures such as scrapers to abut against the lower end of the belt to scrape off the material carried back on the belt, thereby improving the stability and safety of equipment operation.

[0005] However, in actual operation, the belt tension changes with the material transport time and quantity. If the belt is too slack, the contact force with the scraper is too great. While this can remove material adhering to the belt, it also causes significant frictional wear. The frictional resistance between the belt and the scraper is very high, which, in severe cases, affects normal belt transport and reduces belt lifespan.

[0006] Therefore, an adjustable scraper scraping device that can adjust the contact force between the scraper and the belt according to the belt tension not only protects the belt, but also scrapes off the material adhering to the belt more fully and efficiently. Utility Model Content

[0007] Based on the above background, the purpose of this utility model is to provide a belt bottom cleaning device for belt conveyors.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A belt bottom cleaning device for a belt conveyor includes a belt cleaning mechanism installed at the bottom of the belt conveyor frame;

[0010] The belt cleaning mechanism includes several scraper assemblies, each including a scraper and a bracket for mounting the scraper. The bracket is slidably mounted with a flip shaft structure via an elastic sliding structure, and the flip shaft structure is positioned after rotation via a flip positioning structure.

[0011] Preferably, the belt cleaning mechanism includes a pair of scraper assemblies symmetrically arranged on both sides;

[0012] The two ends of the scraper assembly are connected by an adjustable bracket structure.

[0013] Preferably, the bracket has a mounting groove for mounting a scraper, and the scraper is confined within the mounting groove;

[0014] The scraper is fastened to the bracket by a number of screws;

[0015] The scraper is made of rubber.

[0016] Preferably, the elastic sliding structure includes a plurality of sliding rods fixedly connected to the bottom of the bracket;

[0017] A spring is sleeved on the sliding rod;

[0018] The flip-shaft structure includes a flip-shaft, a sliding rod slidably connected to the flip-shaft; the top of the spring is fixedly connected to the bottom of the bracket, and the bottom of the spring is fixedly connected to the top of the flip-shaft.

[0019] Preferably, the two ends of the flip shaft are rotatably connected to end brackets, and the end brackets are connected to each other through an adjusting bracket structure.

[0020] Preferably, the adjusting bracket structure includes a pair of long slide rail brackets spaced apart vertically, the long slide rail brackets being slidably connected to end brackets;

[0021] The long slide rail bracket is threaded with two pairs of nuts, which are locked on both sides of the end bracket to adjust the spacing between the scraper assemblies.

[0022] Preferably, the flipping positioning structure includes flipping seats that are fixedly connected to the ends of the flipping shaft, and the flipping seats are hinged to a telescopic positioning rod structure, which is hinged to the end bracket.

[0023] Preferably, the telescopic positioning rod structure includes a telescopic rod hinged to the upper end of the inner side wall of the flipping seat, the telescopic rod being slidably connected to a telescopic tube, and an ear seat hinged to the end bracket being fixedly connected to the telescopic tube.

[0024] The telescopic rod has several pin holes, and the telescopic rod cylinder is threaded with a pin hole screw that is locked in the pin holes.

[0025] Preferably, the belt cleaning mechanism further includes a spray washing assembly disposed between the scraper assemblies;

[0026] The spray washing assembly includes a spray washing pipe, and the top of the spray washing pipe is connected to several nozzles.

[0027] Both ends of the spray pipe are fastened to the long slide rail bracket by screws.

[0028] This utility model has the following beneficial effects:

[0029] 1. During operation, when the belt tension is low and the lower part of the belt sinks significantly, if the distance between the scraper and the belt cannot be adjusted, the belt will still pass through the scraper with significant frictional resistance, leading to rapid scraper wear and severe belt friction damage. Therefore, this invention incorporates a hinged structure slidably mounted on a bracket via an elastic sliding structure. When the belt presses against the scraper, the elastic sliding structure's cushioning motion ensures the scraper presses firmly against the belt, maintaining a sufficient scraping effect while protecting the belt. If excessive friction occurs between the belt and the scraper, the scraper-bracket structure lowers due to elastic cushioning, increasing the distance between the scraper and the belt.

[0030] 2. By adjusting the posture of the scraper-support structure through the flip-shaft structure, and thus adjusting the flip angle of the scraper, the distance between it and the belt is changed. This flip-shaft structure is often necessary for adjusting belts with high slack.

[0031] 3. The spray cleaning component structure design enables the belt to be further sprayed and cleaned during routine maintenance. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the belt conveyor frame for installing the belt bottom cleaning device in an embodiment of this utility model;

[0034] Figure 2 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of the elastic sliding structure in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the flipping positioning structure in an embodiment of the present invention;

[0037] Figure 5 This is an embodiment of the present utility model. Figure 2 A schematic diagram of the planar structure in the diagram;

[0038] Figure 6 This is a schematic diagram of the structure of the telescopic rod hinged installation flip seat and end bracket in the embodiment of this utility model.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0043] Example 1

[0044] like Figure 1-6 As shown, a belt bottom cleaning device for a conveyor belt includes a belt cleaning mechanism installed at the bottom of the conveyor frame 1. Specifically, the belt cleaning mechanism is installed by welding mounting angle plates 3 to the top and bottom of the end bracket 14 and fastening them to the lower end of the conveyor frame 1 with bolts (the specific dimensions of the mounting angle plates are matched according to the dimensions of the conveyor frame).

[0045] Similar to the existing scraper structure installation method, the entire device spans across the bottom of the belt conveyor frame, and the scrapers on the scraper assembly below abut against the bottom of the belt (the belt is divided into an upper belt section for conveying materials and a lower belt section that passes through the bottom of the frame after conveying materials; the entire device scrapes the material from the bottom of the lower belt section).

[0046] To effectively scrape off the material adhering to the conveyor belt, the aforementioned belt cleaning mechanism includes a pair of scraper assemblies 1 symmetrically arranged on the left and right sides. The scraper assemblies 1 are connected as a single unit by the following adjusting bracket structure.

[0047] Specifically, the scraper assembly 1 includes a scraper 12 (the scraper 12 is a thickened rubber plate, and the top of the scraper 12 is curved to prevent sharp corners from scratching the belt) and a bracket 11 for mounting the scraper 12.

[0048] The specific installation method is detachable, so that the scraper 12 can be easily replaced when it is worn too much. Specifically, the bracket 11 has an installation groove (cubic cuboid groove structure) for installing the scraper 12, and the scraper 12 is limited in the installation groove.

[0049] Meanwhile, the scraper 12 is fastened to the bracket 11 by several screws; specifically, after the screws pass through both sides of the bracket 11 and the scraper 12, nuts are fastened to both ends for locking.

[0050] During operation, when the belt tension is low and the lower part of the belt sinks significantly, if the distance between the scraper 12 and the belt cannot be adjusted, the belt will still pass through the scraper 12 with significant frictional resistance. This not only causes rapid wear of the scraper 12 but also severe frictional damage to the belt. Therefore, this invention incorporates a flip-shaft structure slidably mounted on the bracket 11 via an elastic sliding structure. This allows the scraper 12 to press against the belt and maintain a sufficient scraping effect through the elastic buffering movement of the elastic sliding structure when the belt touches the scraper 12. Simultaneously, it protects the belt. If excessive friction occurs between the belt and the scraper 12, the scraper 12-bracket 11 structure will descend through elastic buffering, increasing the distance between the scraper 12 and the belt.

[0051] Secondly, by adjusting the posture of the scraper 12-support 11 structure through the flip shaft structure, the flip angle of the scraper 12 is adjusted, thereby changing the distance between it and the belt.

[0052] For belts with high slack, adjustment is often required through a flip-shaft structure (in actual operation, the belt conveyor cannot adjust the tension while the belt is running).

[0053] Specifically, the elastic sliding structure includes several sliding rods 15 fixedly connected to the bottom of the bracket 11; the sliding rods 15 pass through the following flip axis position and are fixed at the bottom with an anti-detachment head.

[0054] Meanwhile, a spring 151 is sleeved on the sliding rod 15; the flip shaft structure includes a flip shaft 13, and the sliding rod 15 is slidably connected to the flip shaft 13; the top of the spring 151 is fixedly connected to the bottom of the bracket 11, and the bottom of the spring 151 is fixedly connected to the top of the flip shaft 13. Specifically, a spring seat that mates with the spring 151 is welded to the top of the flip shaft 13, the sliding rod 15 slides through the spring seat, and the bottom of the spring 151 is fixed to the spring seat.

[0055] When the belt is too slack and scrapes against the scraper 12, the scraper 12 is subjected to severe downward pressure. The bracket 11 and the scraper 12 overcome the resistance of the spring 151 and slide down to increase the distance between the scraper 12 and the belt, thereby reducing the wear of the belt by the scraper 12. This also ensures that the belt can pass smoothly and with low resistance.

[0056] Meanwhile, when the material adhering to the belt is thick, the above process also reduces the frictional resistance of the scraper 12, preventing excessive resistance from the belt passing through the scraper 12. The above structure protects the belt in a certain way, and with the cooperation of the spring 151 structure, the scraper 12 and the bracket 11 always maintain a certain strength of contact force with the belt to ensure that the material adhering to the belt can be scraped off.

[0057] Example 2

[0058] like Figure 1-5 As shown, in this embodiment, based on the structure of embodiment 1, the left and right ends of the above-mentioned flip shaft 13 are respectively rotatably connected to end brackets 14, and the two end brackets 14 at the left and right ends are respectively connected by adjusting bracket structures.

[0059] Specifically, the spacing of the scraper assembly 1 can be changed by adjusting the support structure. For example, if the two scraper assemblies 1 are kept at a spacing of 60cm-120cm, the belt can be scraped twice. If the belt passes through one scraper assembly 1 for the first time, it is easy to scrape it insufficiently. When the belt moves 60-120cm from that position, it will be scraped again by the scraper assembly 1 on the other side to ensure that the recycle material adhering to the belt can be scraped off completely.

[0060] Specifically, the adjusting bracket structure includes a pair of long slide rail brackets 4 spaced apart vertically, the long slide rail brackets 4 being slidably connected to end brackets 14 (the upper and lower ends of the end brackets 14 have cooperating through cavities). Simultaneously, two pairs of nuts are threaded onto the long slide rail brackets 4, locking onto both sides of the end brackets 14, for adjusting the spacing between the scraper assemblies 1.

[0061] The adjustment method is as follows: loosen the two pairs of nuts in advance, so that each pair of nuts is no longer positioned on the two side walls (front and rear sides) of the corresponding end bracket 14. Then, slide and adjust the end bracket 4, adjust the spacing of the scraper assembly 1, and then position the nuts on both sides of the end bracket 14 again to complete the locking positioning.

[0062] Example 3

[0063] like Figure 1-6 As shown, this embodiment is based on the structure of embodiment 2. When the belt is too loose, the angle of the bracket and scraper 12 can be further adjusted by rotating the flip shaft 13, thereby changing the distance between the scraper 12 and the belt. This achieves the goal of keeping the scraper 12 in contact with the belt while adjusting the contact force (related to frictional resistance) according to the belt's slackness to protect the belt.

[0064] Meanwhile, the flip shaft structure is positioned after rotation by the flip positioning structure. The flip positioning structure includes flip seats 16 that are fixedly connected to the left and right ends of the flip shaft 13, respectively. The flip seats 16 are hinged to a telescopic positioning rod structure, which is hinged to the end bracket 14.

[0065] The telescopic positioning rod structure includes a telescopic rod 171 hinged to the upper end of the inner wall of the flipping seat 16 (specifically, a fixed pin is located at the upper end of the inner wall of the flipping seat 16, and a pin sleeve is fixedly hinged to the fixed pin at the end of the telescopic rod). The telescopic rod 171 is slidably connected to a telescopic rod cylinder 17, and an ear seat is fixedly connected to the telescopic rod cylinder 17 and hinged to the end bracket 14. Similarly, the ear seat is hinged to the end bracket 14 via a pin.

[0066] The telescopic rod 171 has several pin holes (distributed along the length direction), and the telescopic rod cylinder 17 is threaded with a pin hole screw that is locked in the pin holes.

[0067] During the rotation adjustment of the bracket-scraper 12 by the rotating shaft 13, the pin hole screw is loosened. During the rotation, the telescopic rod-telescopic rod cylinder structure rotates and extends simultaneously. After the bracket 11-scraper 12 structure has been adjusted, the pin hole screw is locked into the corresponding pin hole to achieve positioning adjustment.

[0068] The above structure enables the tilting adjustment of the bracket-scraper 12 structure posture, and after adjustment, it is locked and positioned.

[0069] In actual operation, when the belt conveyor is in a slack state for a long time, only a single adjustment is needed to fully scrape off the adhering material from the belt. Once the belt conveyor is tensioned, the scraper 12-support 11 structure is adjusted again in the opposite direction to reduce the distance between the scraper 12 and the belt, thus ensuring the scraping effect of the scraper 12.

[0070] Example 4

[0071] like Figure 1-6 As shown, based on the structure of embodiment 3, when the belt conveyor is running idle (i.e., the belt conveyor is regularly cleaned and maintained), in order to further completely remove the material adhering to the belt, the belt cleaning mechanism also includes a spray washing assembly 2 disposed between the scraper assembly 1; the spray washing assembly 2 includes a spray washing pipe 21, and the top of the spray washing pipe 21 is connected to several nozzles 22; both ends of the spray washing pipe 21 are respectively fastened to the long slide rail bracket 4 by screws 212.

[0072] Specifically, a connecting bracket rod 23 is fixedly connected to the long slide rail bracket 4, and a screw 212 is threaded onto the connecting bracket rod 23. The nozzle 22 is a conventional spraying method disclosed in the prior art. According to existing methods, the bottom of the spray pipe 21 is connected to a spray inlet pipe 211, which is connected to an external spraying device, such as a material pump (not shown in the figure), via a hose. The material pump delivers the prepared cleaning agent to the spray pipe 21 and sprays it onto the belt. Since the spraying assembly 2 is positioned between the scraper assemblies 1, the belt is pre-scraped by one scraper assembly 1, and then that section of the belt is sprayed and then scraped again by the other scraper assembly 1. After spraying, the dirt adhering to the belt softens and is easier to scrape off.

[0073] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A belt bottom cleaning device for a belt conveyor, characterized in that, This includes a belt cleaning mechanism installed at the bottom of the conveyor frame; The belt cleaning mechanism includes several scraper assemblies, each including a scraper and a bracket for mounting the scraper. The bracket is slidably mounted with a flip shaft structure via an elastic sliding structure, and the flip shaft structure is positioned after rotation via a flip positioning structure.

2. The belt bottom cleaning device for belt conveyors according to claim 1, characterized in that, The belt cleaning mechanism includes a pair of scraper assemblies symmetrically arranged on both sides; The two ends of the scraper assembly are connected by an adjustable bracket structure.

3. The belt bottom cleaning device for belt conveyors according to claim 2, characterized in that, The bracket is provided with a mounting groove for mounting a scraper, and the scraper is limited within the mounting groove; The scraper is fastened to the bracket by a number of screws; The scraper is made of rubber.

4. The belt bottom cleaning device for belt conveyors according to claim 2, characterized in that, The elastic sliding structure includes several sliding rods fixedly connected to the bottom of the bracket; A spring is sleeved on the sliding rod; The flip-shaft structure includes a flip-shaft, a sliding rod slidably connected to the flip-shaft; the top of the spring is fixedly connected to the bottom of the bracket, and the bottom of the spring is fixedly connected to the top of the flip-shaft.

5. The belt bottom cleaning device for belt conveyors according to claim 4, characterized in that, The two ends of the flipping shaft are rotatably connected to end brackets, and the end brackets are connected to each other through an adjusting bracket structure.

6. The belt bottom cleaning device for belt conveyors according to claim 5, characterized in that, The adjusting bracket structure includes a pair of long slide rail brackets spaced apart vertically, and the long slide rail brackets are slidably connected to the end brackets. The long slide rail bracket is threaded with two pairs of nuts, which are locked on both sides of the end bracket to adjust the spacing between the scraper assemblies.

7. The belt bottom cleaning device for belt conveyors according to claim 6, characterized in that, The flipping positioning structure includes flipping seats that are fixedly connected to the ends of the flipping shaft. The flipping seats are hinged to a telescopic positioning rod structure, which is hinged to the end bracket.

8. The belt bottom cleaning device for belt conveyors according to claim 7, characterized in that, The telescopic positioning rod structure includes a telescopic rod hinged to the upper end of the inner side wall of the flipping seat, a telescopic rod tube slidably connected to the telescopic rod tube, and an ear seat hinged to the end bracket fixedly connected to the telescopic rod tube. The telescopic rod has several pin holes, and the telescopic rod cylinder is threaded with a pin hole screw that is locked in the pin holes.

9. The belt bottom cleaning device for belt conveyors according to claim 6, characterized in that, The belt cleaning mechanism also includes a spray washing component disposed between the scraper assemblies; The spray washing assembly includes a spray washing pipe, and the top of the spray washing pipe is connected to several nozzles. Both ends of the spray pipe are fastened to the long slide rail bracket by screws.

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