Belt division device

Abstract

The invention provides a belt division device which comprises a belt conveyor, the belt conveyor comprises a rack, a transmission drum and a turnabout drum which are rotatably connected with the two opposite ends of the extension direction of the rack respectively, and a conveying belt arranged on the transmission drum and the turnabout drum in a sleeving mode; the belt driving assembly is in driving connection with the transmission drum so as to drive the transmission drum to rotate; the blanking hopper is erected above the conveying belt at one end of the transmission drum; the sampling driving assembly is erected above the conveying belt and located on the side, facing the turnabout drum, of the discharging hopper; the sampling hopper is in driving connection with the sampling driving assembly and is driven by the sampling driving assembly to rotate, and the conveying belt is located on the rotating path of the sampling hopper; the sample bin is located on the side edge of the belt conveyor, corresponds to the sampling hopper and is used for storing materials scraped off by the sampling hopper; and the residual material bin is arranged at one end of the turnabout drum and is used for storing the materials falling from the conveying belt. The sampling device is suitable for materials of various conditions, and accurate and efficient sampling can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shrinking devices, and in particular to a belt shrinking device. Background Art

[0002] In the sampling and sample preparation process of coal and granular objects, it is extremely important to obtain representative samples. Traditional manual reduction has low efficiency, large errors, and high labor intensity for experimenters, which makes it difficult to meet the needs of large-scale industrial production. Among mechanical reduction equipment, common ones are grid reduction and binary reduction, but when the material is humid and sticky, it is easy to clog the reduction equipment and affect continuous operation. At present, various industries are pursuing refined production and are in urgent need of accurate, efficient, and adaptable reduction devices. Summary of the invention

[0003] In view of this, the present invention provides a belt shrinking device to solve the above technical problems.

[0004] The belt shrinking device provided by the present invention comprises:

[0005] A belt conveyor, comprising a frame, a drive roller and a redirecting roller rotatably connected to opposite ends of the frame in an extending direction, and a conveyor belt sleeved with the drive roller and the redirecting roller;

[0006] A belt drive assembly, wherein the belt drive assembly is drivingly connected to the transmission drum to drive the transmission drum to rotate;

[0007] A lower hopper, the lower hopper is mounted above the conveyor belt at one end of the driving roller;

[0008] A sampling drive assembly, the sampling drive assembly is mounted above the conveyor belt and is located on a side of the lower hopper facing the redirecting roller;

[0009] A sampling hopper, the sampling hopper is drivingly connected to the sampling drive assembly and rotates under the drive of the sampling drive assembly, and the conveyor belt is located on the rotation path of the sampling hopper;

[0010] A sample bin, which is located on the side of the belt conveyor and is arranged corresponding to the sampling hopper and is used to store the material scraped off by the sampling hopper;

[0011] A residual material bin is arranged at one end of the redirecting roller and is used to store materials falling from the conveyor belt.

[0012] Optionally, the belt shrinking device further comprises:

[0013] A support frame, the support frame is fixed to two opposite sides of the frame in the width direction;

[0014] An arc-shaped rod, the two opposite ends of which are respectively connected to the support frames on both sides and protrude toward the frame, and the conveyor belt is laid on the arc-shaped rod.

[0015] Optionally, the belt contraction device further comprises: a roller, the roller is sleeved with the arc-shaped rod and is rotatably connected to the arc-shaped rod, and the conveyor belt is laid on the roller.

[0016] Optionally, the belt shrinking device further comprises:

[0017] A first material guide trough, wherein the first material guide trough is arranged corresponding to the sampling hopper, a first end of the first material guide trough is fixedly connected to the frame, and a second end of the first material guide trough is connected to an entrance of the sample bin;

[0018] A second material guide trough, wherein a first end of the second material guide trough is fixedly connected to the frame at one end of the redirecting roller, and a second end of the second material guide trough is connected to the entrance of the residual material bin.

[0019] Optionally, the belt shrinking device further comprises:

[0020] A cover body, wherein the cover body covers the belt conveyor, the belt drive assembly, the lower hopper, the sampling drive assembly and the sampling hopper, and a first through hole is opened at a position corresponding to a feed inlet of the lower hopper;

[0021] The first material guiding groove and the second material guiding groove respectively penetrate the cover body.

[0022] Optionally, the belt shrinking device further includes: a discharge baffle, wherein the discharge baffle is installed at the discharge port of the lower hopper.

[0023] Optionally, the sampling drive component includes:

[0024] Sampling motor;

[0025] A first transmission rod, which extends along the length direction of the conveyor belt and is fixedly connected to the output shaft of the sampling motor and rotates under the drive of the sampling motor;

[0026] A second transmission rod is vertically and fixedly connected to the first transmission rod, and the sampling bucket is fixedly connected to the end of the second transmission rod.

[0027] Optionally, the sampling bucket is fixed to opposite ends of the second transmission rod respectively.

[0028] Optionally, the belt drive assembly comprises:

[0029] Belt motor;

[0030] A pulley, the output shaft of the belt motor is coaxially and fixedly connected to the pulley;

[0031] A belt is provided on the pulley and the transmission roller.

[0032] Optionally, the inner wall of the lower hopper is provided with an anti-stick coating and a buffer coating.

[0033] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0034] The belt reduction device of the present invention drives the belt conveyor with the help of the belt drive component to drive the material to move linearly, and drives the sampling bucket to rotate with the help of the sampling drive component. When the sampling bucket contacts the conveyor belt, the material on the conveyor belt is scraped into the sample bin to realize the material sampling process. It is suitable for materials with various humidity and viscosity conditions, there is no risk of equipment clogging, and continuous and stable operation can be achieved. By adjusting the output power of the belt drive component and the sampling drive component, the sampling interval of the sampling bucket for the material on the conveyor belt can be adjusted, thereby realizing accurate and efficient sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A three-dimensional structural diagram of a belt shrinking device according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A top view of the belt splitting device shown;

[0037] Figure 3 for Figure 1 A side view of the belt splitter shown;

[0038] Figure 4 for Figure 1 Another angle side view of the belt reduction device shown.

[0039] Reference numerals:

[0040] 1: belt conveyor; 101: frame; 102: drive roller; 103: conveyor belt; 2: belt drive assembly; 21: pulley; 22: belt; 3: lower hopper; 4: sampling drive assembly; 41: sampling motor; 42: first transmission rod; 43: second transmission rod; 5: sampling hopper; 6: support frame; 7: arc rod; 8: discharge baffle; 9: conveyor bracket; 10: sampling bracket; 11: hopper bracket. DETAILED DESCRIPTION

[0041] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0042] Figure 1 A three-dimensional structural diagram of a belt shrinking device according to an embodiment of the present invention; Figure 2 for Figure 1 A top view of the belt splitting device shown; Figure 3 for Figure 1 A side view of the belt splitter shown;

[0043] Figure 4 for Figure 1 Another side view of the belt splitting device shown. Figure 1-Figure 4 As shown, the belt reduction device includes a belt conveyor 1, a belt drive assembly 2, a lower hopper 3, a sampling drive assembly 4, a sampling hopper 5, a sample bin (not shown) and a residual bin (not shown).

[0044] The belt conveyor 1 includes a frame 101, a driving roller 102 and a redirecting roller (not shown) rotatably connected to the opposite ends of the frame 101 in the extension direction, and a conveyor belt 103 on which the driving roller 102 and the redirecting roller are mounted; the belt drive assembly 2 is drivingly connected to the driving roller 102 to drive the driving roller 102 to rotate; the lower hopper 3 is mounted above the conveyor belt 103 at one end of the driving roller 102; the sampling drive assembly 4 is mounted above the conveyor belt 103 and is located on the side of the lower hopper 3 facing the redirecting roller; the sampling hopper 5 is drivingly connected to the sampling drive assembly 4 and rotates under the drive of the sampling drive assembly 4, and the conveyor belt 103 is located on the rotation path of the sampling hopper 5; the sample bin is located on the side of the belt conveyor 1 and is arranged corresponding to the sampling hopper 5, for storing materials scraped by the sampling hopper 5; the residual bin is arranged at one end of the redirecting roller, for storing materials falling from the conveyor belt 103.

[0045] When sampling is required, the belt drive assembly 2 is started, so that the belt drive assembly 2 drives the driving roller 102 of the belt conveyor 1 to rotate, and the driving roller 102 rotates to drive the conveyor belt 103 mounted thereon to move accordingly, and the conveyor belt 103 moves to drive the mounted redirecting roller to rotate, so that the conveyor belt 103 circulates between the driving roller 102 and the redirecting roller. When materials are input into the lower hopper 3, the materials fall onto the conveyor belt 103 below through the discharge port of the lower hopper 3, and move toward the redirecting roller together with the conveyor belt 103. When the sampling drive assembly 4 is started, the sampling drive assembly 4 drives the sampling bucket 5 to rotate. The rotating surface of the sampling bucket 5 is perpendicular to the extension direction of the conveyor belt 103. When the sampling bucket 5 rotates to the position of the conveyor belt 103, it contacts the conveyor belt 103 and scrapes the material on the conveyor belt 103 during further rotation. The material is scraped by the sampling bucket 5 and moves along the width direction of the conveyor belt 103 with the sampling bucket 5. When it moves to the width edge of the conveyor belt 103, it falls into the sample bin on the side of the conveyor belt 103. The sampling drive assembly 4 drives the sampling bucket 5 to rotate cyclically, and the belt drive assembly 2 drives the conveyor belt 103 to move continuously. Then, every time the material on the conveyor belt 103 moves a certain distance, the sampling bucket 5 contacts the conveyor belt 103 once, and scrapes the material on the conveyor belt 103 and drops it into the sample bin. This cycle is repeated to achieve uniform sampling of all materials. The material not scraped off by the sampling bucket 5 moves further with the conveyor belt 103, and when it moves to one end of the redirecting roller, it falls into the residual material bin below for collection as the conveyor belt 103 is redirected. When the sampling amount needs to be increased, the material movement speed can be slowed down by reducing the output power of the belt drive component 2, or the output power of the sampling drive component 4 can be increased to increase the rotation speed of the sampling bucket 5, thereby increasing the number of times the sampling bucket 5 scrapes off the material. When the sampling amount needs to be reduced, the material movement speed can be increased by increasing the output power of the belt drive component 2, or the output power of the sampling drive component 4 can be reduced to reduce the rotation speed of the sampling bucket 5, thereby reducing the number of times the sampling bucket 5 scrapes off the material. By adjusting the output power of the belt drive component 2 and the sampling drive component 4, according to the system sampling method: time-based sampling, sampling reduction effects of different proportions from 1 / 16 to 1 / 2 can be achieved.

[0046] By adopting the belt shrinking device of the present invention, the belt drive component 2 drives the belt conveyor 1 to drive the material to move linearly, and the sampling bucket 5 is driven to rotate by the sampling drive component 4. When the sampling bucket 5 contacts the conveyor belt 103, the material on the conveyor belt 103 is scraped into the sample bin, thereby realizing the material sampling process. The device is suitable for materials with various humidity and viscosity conditions, does not have the risk of equipment clogging, and can achieve continuous and stable operation. By adjusting the output power of the belt drive component 2 and the sampling drive component 4, the sampling interval of the sampling bucket 5 for the material on the conveyor belt 103 can be adjusted, thereby achieving accurate and efficient sampling.

[0047] like Figure 1 As shown, in this embodiment, a redirecting roller is provided at the left end of the belt conveyor 1, and a driving roller 102 is provided at the right end. The cross-sectional area of ​​the lower hopper 3 gradually decreases in the direction toward the conveyor belt 103, and the whole is funnel-shaped. It is erected above the conveyor belt 103 at the right end with the help of a hopper bracket 11. The hopper bracket 11 includes an annular frame and four support columns spaced and connected to the lower surface of the annular frame. The lower hopper 3 is placed in the annular frame and clamped with the annular frame, and the discharge port at the lower end of the lower hopper 3 is kept at a certain distance from the conveyor belt 103. During the sampling process, the material is continuously conveyed to the feed port above the lower hopper 3, and the material then falls onto the conveyor belt 103 through the discharge port below the lower hopper 3. In this embodiment, the conveyor belt 103 is 300 mm wide, and a belt material with high wear resistance, antistatic and low friction is selected. Since the sample bin is placed on the side of the belt conveyor 1 and the residual bin is placed at one end of the redirecting roller, in order to make the material scraped by the sampling bucket 5 fall smoothly into the sample bin and the material not scraped fall smoothly into the residual bin, a conveyor bracket 9 is fixedly installed below the frame 101 of the belt conveyor 1 so that the belt conveyor 1 is at a certain height. In this embodiment, the conveyor bracket 9 is set as an aluminum alloy bracket with a height of 800mm and a width of 100mm. The conveyor bracket 9 includes a plurality of support legs connected to the frame 101 at intervals, and a support rod connecting two adjacent support legs. The sampling drive assembly 4 and the sampling bucket 5 are erected above the left end of the middle part of the conveyor belt 103 with the help of the sampling bracket 10. The sampling bracket 10 is higher than the conveyor belt 103 and includes a support platform, four columns fixedly connected to the lower surface of the support platform at intervals, and a connecting rod vertically connecting two adjacent columns. The sampling drive assembly 4 is fixed on the support platform. When the sampling bucket 5 rotates to the lowest position, it contacts the conveyor belt 103 and scrapes the material. According to the actual application, the belt drive assembly 2 and the sampling drive assembly 4 can be of any structural form, as long as they can drive the belt conveyor 1 and the sampling bucket 5 to move respectively, and the sampling bucket 5 can be of any structure, as long as it can rotate to contact the conveyor belt 103 and scrape the material on the conveyor belt 103 into the sample bin. The belt conveyor 1 is a mature prior art, and its specific structure is not repeated here.

[0048] Optionally, the belt contraction device further includes a support frame 6 and an arc rod 7. The support frame 6 is fixed to opposite sides of the width direction of the frame 101; the opposite ends of the arc rod 7 are respectively connected to the support frames 6 on both sides and protrude toward the frame 101, and the conveyor belt 103 is mounted on the arc rod 7. In this arrangement, when the conveyor belt 103 is mounted on the arc rod 7, the cross section of the conveyor belt 103 is also arc-shaped, and the sampling bucket 5 rotates under the drive of the sampling drive assembly 4. In the process of approaching the conveyor belt 103, contacting the conveyor belt 103, and leaving the conveyor belt 103, the moving path is also arc-shaped, so that the arc of the cross section of the conveyor belt 103 matches the arc path of the sampling bucket 5, and the sampling bucket 5 can always be in close contact with the conveyor belt 103 within the width range of the conveyor belt 103, so that the materials in the cross section of the conveyor belt 103 can be scraped into the sample bin to avoid missing some materials.

[0049] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, two support frames 6 are fixed on the frames 101 on both sides of the belt conveyor 1 at intervals below the sampling bucket 5. The two support frames 6 arranged opposite to each other form a group, and an arc rod 7 is connected between the two. The arc rod 7 protrudes downward, so that after the conveyor belt 103 is overlapped on the arc rod 7, an arc section matching the arc path of the sampling bucket 5 is formed. The specific height of the support frame 6, the curvature of the arc rod 7, etc. are adjusted according to the arc moving path of the sampling bucket 5 at the conveyor belt 103.

[0050] Optionally, the belt contraction device further includes a roller (not shown), the roller is sleeved with the arc rod 7, and is rotatably connected to the arc rod 7, and the conveyor belt 103 is draped on the roller. If the conveyor belt 103 is directly draped on the arc rod 7, continuous friction may cause damage to the conveyor belt 103. If the roller is provided, the conveyor belt 103 is draped on the roller, and the roller rotates with the movement of the conveyor belt 103, which reduces the friction on the conveyor belt 103 and is conducive to extending the service life of the conveyor belt 103. The arc rod 7 is arc-shaped. In order to allow the roller to rotate smoothly relative to the arc rod 7, the roller is not equal to the length of the arc rod 7, but is sleeved on a section of the lower point of the arc rod 7. The conveyor belt 103 is draped on the roller at the lower point of the arc rod 7, and is draped on the arc rod 7 at other positions.

[0051] Optionally, the belt reduction device also includes a first material guide trough (not shown) and a second material guide trough (not shown). The first material guide trough is arranged corresponding to the sampling hopper 5, the first end of the first material guide trough is fixedly connected to the frame 101, and the second end of the first material guide trough is connected to the entrance of the sample bin; the first end of the second material guide trough is fixedly connected to the frame 101 at one end of the redirecting roller, and the second end of the second material guide trough is connected to the entrance of the residual material bin. With this arrangement, when the sampling hopper 5 scrapes the material on the conveyor belt 103, the material first falls into the first material guide trough, and then is guided to the sample bin below by the first guide trough. Similarly, when the material moves to one end of the redirecting roller with the conveyor belt 103, it first falls into the second material guide trough, and then is guided to the residual material bin below by the second material guide trough, thereby preventing the material from scattering around in the process of falling from the conveyor belt 103.

[0052] Optionally, the belt reduction device further includes a cover body (not shown), which covers the belt conveyor 1, the belt drive assembly 2, the lower hopper 3, the sampling drive assembly 4 and the sampling hopper 5, and has a first through hole at the feed port corresponding to the lower hopper 3; the first material guide trough and the second material guide trough respectively penetrate the cover body. During the sampling process, the material may emit dust, causing pollution to the atmosphere, and impurities in the atmosphere may also fall into the material, affecting the subsequent analysis accuracy of the sample. The cover body is set to cover the various components and relatively separate them from the atmosphere, which can prevent the material dust from polluting the atmosphere and also prevent the impurities in the atmosphere from affecting the sample analysis results.

[0053] Overall cover design Figure 1 All structures in the housing are formed, and a first through hole is opened at the position corresponding to the feed port above the lower hopper 3, so that the material can be continuously transported to the lower hopper 3 through the first through hole. The sample bin and the residual bin are arranged outside the housing, the first guide groove runs through the housing, connecting the belt conveyor 1 and the sample bin, so that the material scraped from the sampling hopper 5 is transported to the sample bin, and the second guide groove runs through the housing, connecting the belt conveyor 1 and the residual bin, so that the material dropped from the conveyor belt 103 is transported to the residual bin. The shape and size of the housing can be adjusted as needed.

[0054] Optionally, the belt contraction device further includes a discharge baffle 8, which is installed at the discharge port of the lower hopper 3. The discharge baffle 8 is provided to limit the material when the material falls from the lower hopper 3 to prevent the material from scattering, so that the material is concentrated within a certain width range of the conveyor belt 103 and has a certain height, thereby ensuring the uniformity of the material transported by the conveyor belt 103.

[0055] like Figure 1As shown, in this embodiment, two discharge baffles 8 are provided, both of which have arc-shaped cross-sections, are located on both sides of the axis of the conveyor belt 103, and are symmetrically arranged about the discharge port of the lower hopper 3, so that the material forms a long strip with a width of 150 mm and falls smoothly to the conveyor belt 103, and a certain distance is maintained between the discharge baffle 8 and the conveyor belt 103. The specific shape and size of the discharge baffle 8 can be adjusted according to actual application conditions.

[0056] Optionally, the sampling drive assembly 4 includes a sampling motor 41, a first transmission rod 42 and a second transmission rod 43. The first transmission rod 42 extends along the length direction of the conveyor belt 103, and is fixedly connected to the output shaft of the sampling motor 41, and rotates under the drive of the sampling motor 41; the second transmission rod 43 is vertically fixedly connected to the first transmission rod 42, and the sampling bucket 5 is fixedly connected to the end of the second transmission rod 43. This arrangement simplifies the structural composition of the sampling drive assembly 4 and facilitates assembly.

[0057] like Figure 1 and Figure 2 As shown, in the present embodiment, the sampling motor 41 is erected above the conveyor belt 103 with the aid of the sampling bracket 10, and the first transmission rod 42 and the second transmission rod 43 are both straight rods, and the two are vertically connected at the center of the second transmission rod 43. The first transmission rod 42 and the second transmission rod 43 are both made of steel, and the stress is greater than the impact force of the material on the conveyor belt 103 to prevent deformation. When the sampling motor 41 is started, the first transmission rod 42 rotates under the drive of the sampling motor 41, thereby driving the second transmission rod 43 to rotate, and further driving the sampling bucket 5 to rotate with the center of the second transmission rod 43 as the center and half the length of the second transmission rod 43 as the radius. The sampling bucket 5 is set in a horseshoe shape and is made of 2mm steel plate, such as Figure 1 As shown, in this embodiment, the sample bin is arranged on the right side of the conveyor belt 103, and the sampling motor 41 drives the second transmission rod 43 to rotate counterclockwise. Taking the sampling bucket 5 on the right side as an example, the sampling bucket 5 is closed at one end connected to the second transmission rod 43, and the height is relatively small, and the end away from the second transmission rod 43 is open, and the height is relatively large. The upper surface of the sampling bucket 5 is open, and a slot is formed in the middle, and the plates on both sides of the slot are right-angled trapezoids. According to the national standard "GB / T19494-2023 Coal Mechanized Sampling Part 1: Sampling Method", the opening size of the sampling bucket 5 shall not be less than 3 times the nominal maximum particle size of the material taken, and shall not be less than 30mm, to ensure the representativeness of the sampling. The sampling hopper 5 rotates counterclockwise until it contacts the conveyor belt 103, and when it moves along the conveyor belt 103, it scrapes the material on the conveyor belt 103 into the slot, so that the material moves with the slot, and when the lower hopper 3 moves to separate from the conveyor belt 103, the material in the slot falls and falls into the sample bin below.

[0058] Optionally, sampling buckets 5 are respectively fixed to opposite ends of the second transmission rod 43. In this arrangement, during one rotation of the second transmission rod 43, the two sampling buckets 5 scrape the material on the conveyor belt 103 once respectively. Therefore, under the premise of a certain frequency of scraping materials, two sampling buckets 5 are provided, and the output power of the sampling motor 41 can be reduced by half.

[0059] Optionally, the belt drive assembly 2 includes a belt motor (not shown), a pulley 21 and a belt 22. The output shaft of the belt motor is coaxially fixedly connected to the pulley 21; the belt 22 is sleeved around the pulley 21 and the transmission roller 102. This arrangement simplifies the structural composition of the belt drive assembly 2, and the coordinated drive output of the belt 22 and the pulley 21 is stable, which is conducive to the stable operation of the conveyor belt 103.

[0060] like Figure 1 and Figure 3 As shown, in the present embodiment, the belt motor is fixed below the frame 101, the pulley 21 is coaxially connected to the belt motor, the drive roller 102 passes through the frame 101 and is rotatably connected to the frame 101, and the belt 22 is sleeved on the pulley 21 and the drive roller 102. When sampling is required, the belt motor is started, and the output shaft of the belt motor rotates to drive the pulley 21 connected thereto to rotate. The rotation of the pulley 21 drives the belt 22 sleeved thereon to move. The movement of the belt 22 drives the drive roller 102 sleeved thereon to rotate, thereby driving the conveyor belt 103 sleeved thereon to move, thereby realizing the movement of the material falling onto the conveyor belt 103. A transmission shaft can also be added so that the transmission shaft coaxially passes through the transmission drum 102, the two are fixedly connected, and the opposite ends of the transmission shaft pass through the frames 101 on both sides and are rotatably connected to the frames 101. The belt 22 is sleeved on the pulley 21 and the transmission shaft, and the belt motor drives the pulley 21 to rotate, thereby driving the belt 22 to move, further driving the transmission shaft to rotate, and finally driving the transmission drum 102 to rotate.

[0061] Optionally, an anti-stick coating and a buffer coating are provided on the inner wall of the lower hopper 3. The anti-stick coating is provided to prevent the material from sticking to the inner wall of the lower hopper 3 after entering the lower hopper 3 and failing to fall smoothly onto the conveyor belt 103 below; the buffer coating is provided to mitigate the impact of the material on the lower hopper 3 when it falls, and prevent the lower hopper 3 from being deformed by excessive impact.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A belt shrinking device, characterized in that: include: A belt conveyor, the belt conveyor comprising a frame, a drive roller and a redirecting roller rotatably connected to opposite ends of the frame in an extending direction, and a conveyor belt sleeved with the drive roller and the redirecting roller; A belt drive assembly, wherein the belt drive assembly is drivingly connected to the transmission drum to drive the transmission drum to rotate; A lower hopper, the lower hopper is mounted above the conveyor belt at one end of the driving roller; A sampling drive assembly, the sampling drive assembly is mounted above the conveyor belt and is located on a side of the lower hopper facing the redirecting roller; A sampling hopper, the sampling hopper is drivingly connected to the sampling drive assembly and rotates under the drive of the sampling drive assembly, and the conveyor belt is located on the rotation path of the sampling hopper; A sample bin, which is located on the side of the belt conveyor and is arranged corresponding to the sampling hopper and is used to store the material scraped off by the sampling hopper; A residual material bin is arranged at one end of the redirecting roller and is used to store materials falling from the conveyor belt.

2. The belt shrinking device according to claim 1, characterized in that: Also includes: A support frame, the support frame is fixed to two opposite sides of the frame in the width direction; An arc-shaped rod, the two opposite ends of which are respectively connected to the support frames on both sides and protrude toward the frame, and the conveyor belt is laid on the arc-shaped rod.

3. The belt shrinking device according to claim 2, characterized in that: Also includes: The roller is sleeved with the arc-shaped rod and is rotatably connected to the arc-shaped rod. The conveyor belt is laid on the roller.

4. The belt shrinking device according to any one of claims 1 to 3, characterized in that: Also includes: A first material guide trough, wherein the first material guide trough is arranged corresponding to the sampling hopper, a first end of the first material guide trough is fixedly connected to the frame, and a second end of the first material guide trough is connected to an entrance of the sample bin; A second material guide trough, wherein a first end of the second material guide trough is fixedly connected to the frame at one end of the redirecting roller, and a second end of the second material guide trough is connected to the entrance of the residual material bin.

5. The belt shrinking device according to claim 4, characterized in that: Also includes: A cover body, wherein the cover body covers the belt conveyor, the belt drive assembly, the lower hopper, the sampling drive assembly and the sampling hopper, and a first through hole is opened at a position corresponding to a feed inlet of the lower hopper; The first material guiding groove and the second material guiding groove respectively penetrate the cover body.

6. The belt shrinking device according to any one of claims 1 to 3, characterized in that: Also includes: A discharge baffle is installed at the discharge port of the lower hopper.

7. The belt shrinking device according to any one of claims 1 to 3, characterized in that: The sampling drive assembly comprises: Sampling motor; A first transmission rod, which extends along the length direction of the conveyor belt and is fixedly connected to the output shaft of the sampling motor and rotates under the drive of the sampling motor; A second transmission rod is vertically and fixedly connected to the first transmission rod, and the sampling bucket is fixedly connected to the end of the second transmission rod.

8. The belt shrinking device according to claim 7, characterized in that: The sampling buckets are fixed to opposite ends of the second transmission rod respectively.

9. The belt shrinking device according to any one of claims 1 to 3, characterized in that: The belt drive assembly comprises: Belt motor; A pulley, the output shaft of the belt motor is coaxially and fixedly connected to the pulley; A belt is provided on the pulley and the transmission roller.

10. The belt shrinking device according to any one of claims 1 to 3, characterized in that: The inner wall of the lower hopper is provided with an anti-stick coating and a buffer coating.

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