Coal sample screening device

Abstract

The utility model discloses a coal sample screening device which comprises a case, a coal screen, a coal sample distributor, a driving motor and a plurality of fan-shaped hoppers. A distributor main body of the coal sample distributor is conical and is arranged below a feeding hopper of the case, and a plurality of baffles are arranged on the distributor main body to form a channel for conveying coal samples. The multiple fan-shaped hoppers are annularly arranged and located below the distributor body. During sampling, the driving motor drives the coal sample distributor to rotate, so that coal samples are uniformly conveyed to the fan-shaped hoppers below, and the uniformity of the coal samples contained in the fan-shaped hoppers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal sample screening, in particular to a coal sample screening device. Background Art

[0002] In the coal mining industry, it is necessary to analyze coal samples. Therefore, during the transportation process after the coal is mined, a coal sample screening device is used to select coal samples of appropriate size, and then inspection equipment is used to analyze the coal samples. Generally, multiple hoppers are used to hold the coal samples and send them to different testing instruments for separate testing to measure various parameters of the coal samples and analyze the strength, lump size, density, gas content and composition of the coal samples, etc.

[0003] In the existing coal sample screening device, a coal sieve is arranged at the top of the box body, a channel is arranged in the box body, and multiple sampling hoppers are arranged around the lower part of the channel. The coal samples are screened out by the coal sieve and then fall into the sampling hoppers through the channel.

[0004] However, since the coal samples are not distributed, the coal samples slide down randomly in the channel, resulting in uneven filling of some hoppers while some hoppers are not full. When the user opens the door panel of the box body to take the hopper, if it is found that some hopper channels are not full or have less coal, additional coal needs to be loaded. At this time, the full hoppers cannot be loaded anymore. If additional coal is loaded, it will cause waste of coal samples and greatly affect the sampling efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a coal sample screening device. By setting a coal sample distributor, it is beneficial to evenly transport coal samples to each sector-shaped hopper and improve the uniformity of coal sample loading in each sector-shaped hopper.

[0006] The technical solution of the utility model provides a coal sample screening device, which includes a chassis, a coal sieve, a coal sample distributor, a driving motor for driving the coal sample distributor to rotate, and multiple sector-shaped hoppers for receiving the coal samples distributed by the coal sample distributor;

[0007] A door panel that can be opened and closed is provided on the chassis side plate of the chassis. An inlet hopper is arranged in the chassis. The coal sieve is detachably arranged on the top of the chassis and above the inlet hopper;

[0008] The coal sample distributor is pivotally installed below the inlet hopper. The coal sample distributor includes a conical distributor body. The top end of the distributor body faces the discharge port of the inlet hopper. Multiple baffles are spaced on the conical surface of the distributor body. A channel for material to fall is formed between any two adjacent baffles;

[0009] The driving motor is connected to the chassis, and the driving motor and the dispenser body are connected by a rotating shaft;

[0010] A plurality of the sector-shaped hoppers are located below the coal sample dispenser and are arranged in a ring in sequence.

[0011] In one optional technical solution, the top end of the dispenser body is directly below the material discharge port.

[0012] In one optional technical solution, a preset distance is left between the top end of the baffle and the top end of the dispenser body.

[0013] In one optional technical solution, the dispenser body is a conical cover plate, and the bottom of the conical cover plate has a conical notch;

[0014] The rotating shaft is connected to the conical cover plate through a connecting bracket, and the connecting bracket is located in the conical notch.

[0015] In one optional technical solution, the connecting bracket includes a vertically extending bracket sleeve, a sleeve top plate provided at the top of the bracket sleeve, and a bracket side plate provided at the edge of the sleeve top plate and extending obliquely downward;

[0016] The bracket sleeve is sleeved on the upper end of the rotating shaft, and the bracket side plate is attached to and connected to the conical cover plate.

[0017] In one optional technical solution, the bottom of the chassis has an installation cavity, and the driving motor is installed in the installation cavity;

[0018] A protective sheath for protecting the rotating shaft is further provided in the chassis. The protective sheath extends from the installation cavity to the coal sample dispenser, and the rotating shaft passes through the protective sheath with a clearance.

[0019] In one optional technical solution, a bearing is assembled between the rotating shaft and the protective sheath.

[0020] In one optional technical solution, a bracket is connected around the protective sheath. The bracket includes a hopper support plate for supporting the sector-shaped hopper.

[0021] In one optional technical solution, the bracket includes a bracket sleeve sleeved on the protective sheath, a bracket bottom plate provided at the lower end of the bracket sleeve, and a bracket top plate provided at the upper end of the bracket sleeve;

[0022] A positioning base plate is provided on the protective sheath, and the bracket top plate is connected to the positioning base plate;

[0023] One end of the hopper support plate is connected to the bottom of the bracket bottom plate.

[0024] In one of the alternative technical solutions, a reinforcing arm is connected between the bracket bottom plate and the bracket sleeve.

[0025] Adopting the above technical solution, the following beneficial effects are achieved:

[0026] The coal sample screening device provided by the present utility model includes a chassis, a coal sieve, a coal sample distributor, a driving motor, and a plurality of fan-shaped hoppers. The distributor body of the coal sample distributor is conical and is arranged below the feed hopper of the chassis. A plurality of baffle plates are arranged on the distributor body to form a channel for conveying coal samples. The plurality of fan-shaped hoppers are arranged in a ring shape and are located below the distributor body. During sampling, the driving motor drives the coal sample distributor to rotate, so as to evenly convey coal samples to the plurality of fan-shaped hoppers below, improving the uniformity of coal samples in each fan-shaped hopper. Description of the Drawings

[0027] Referring to the drawings, the disclosure of the present utility model will become easier to understand. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present utility model. In the drawings:

[0028] Figure 1 is a top view of the coal sample screening device provided by an embodiment of the present utility model;

[0029] Figure 2 is Figure 1 a cross-sectional view of the coal sample screening device shown along the A-A direction;

[0030] Figure 3 is Figure 2 a cross-sectional view of the coal sample screening device shown along the B-B direction;

[0031] Figure 4 a schematic diagram of the coal sample distributor shown;

[0032] Figure 5 is a schematic connection diagram of the driving motor, the rotating shaft, the sheath, and the bracket;

[0033] Figure 6 is a schematic diagram of the connection between the coal sample distributor and the connection bracket;

[0034] Figure 7 is Figure 6 an exploded view of;

[0035] Figure 8 is a three-dimensional view of the fan-shaped hopper. Detailed Embodiments

[0036] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0037] As Figures 1-4 and Figure 8 shown, a coal sample screening device provided by an embodiment of the present utility model includes a chassis 1, a coal sieve 2, a coal sample distributor 3, a driving motor 4 for driving the rotation of the coal sample distributor 3, and a plurality of fan-shaped hoppers 5 for receiving the coal samples distributed by the coal sample distributor 3.

[0038] A door panel 12 that can be opened and closed is provided on the chassis side plate 11 of the chassis 1. An inlet hopper 13 is provided in the chassis 1. The coal sieve 2 is detachably provided on the top of the chassis 1 and is located above the inlet hopper 13.

[0039] The coal sample distributor 3 is pivotally installed below the inlet hopper 13. The coal sample distributor 3 includes a conical distributor body 31. The top end of the distributor body 31 faces the discharge port 131 of the inlet hopper 13. A plurality of baffles 32 are spaced apart on the conical surface of the distributor body 31. A channel 33 for the material to fall is formed between any two adjacent baffles 32.

[0040] The driving motor 4 is connected to the chassis 1, and the driving motor 4 and the distributor body 31 are connected by a rotating shaft 6.

[0041] A plurality of fan-shaped hoppers 5 are located below the coal sample distributor 3 and are arranged in a circular pattern in sequence.

[0042] The coal sample screening device provided by the present utility model includes a chassis 1, a coal sieve 2, a coal sample distributor 3, a driving motor 4, and a plurality of fan-shaped hoppers 5.

[0043] The chassis 1 includes a chassis bottom plate and a plurality of chassis side plates 11. Rollers 15 are provided at the bottom of the chassis bottom plate and / or the chassis side plates 11 for easy movement. An opening is provided at the top of the chassis 1. An inlet hopper 13 is provided in the upper middle part of the chassis 1. The inlet hopper 13 is conical, with a wider upper part and a narrower lower part. The discharge port 131 of the inlet hopper 13 is located at the bottom of the inlet hopper 13.

[0044] The coal sieve 2 is arranged on the top of the chassis 1. It includes a frame 21 and a sieve mesh 22 connected in the frame 21. The frame 21 is placed on the top of the chassis 1 and can be fastened by clips, fasteners, etc. The sieve mesh 22 is located above the top inlet of the inlet hopper 13. The sieve mesh 22 can completely cover the top inlet of the inlet hopper 13 or partially cover the top inlet of the inlet hopper 13.

[0045] The coal sample distributor 3 includes a conical distributor body 31, and the distributor body 31 is narrow at the top and wide at the bottom. A plurality of baffles 32 are spaced on the surface of the distributor body 31. The baffles 32 extend from top to bottom, and can extend along the generatrix of the conical surface of the distributor body 31 or be arranged slightly inclined. A channel 33 is formed between two adjacent baffles 32 for the coal sample to fall. The baffle 32 can be a straight plate or an arc-shaped bent plate. The baffle 32 and the distributor body 31 can be detachably connected or integrally provided.

[0046] The driving motor 4 can be installed in the chassis 1 or on the outside of the chassis 1. A vertically extending rotating shaft 6 is installed in the chassis 1. The driving motor 4 is directly connected to the rotating shaft 6 or connected through a rotating mechanism, and the distributor body 31 is installed on the rotating shaft 6. The rotating shaft 6 and the distributor body 31 are concentrically arranged, and the distributor body 31 is supported by the rotating shaft 6 and driven to rotate by the rotating shaft 6.

[0047] The sector-shaped hopper 5 is approximately a sector-shaped hopper so as to be spliced into an annular shape. A plurality of sector-shaped hoppers 5 are placed in the chassis 1 and arranged in an annular shape. Two adjacent sector-shaped hoppers 5 can be adjacent to each other or have a certain gap. A door plate 12 is hinged on the side plate 11 of the chassis for taking and placing the sector-shaped hopper 5 and for installation and maintenance. An annular support plate or a support plate can be arranged in the middle and lower part of the chassis 1 to support the sector-shaped hopper 5. The plurality of annularly arranged sector-shaped hoppers 5 are located below the distributor body 31, and the coal sample falling from the channel 33 will fall into the sector-shaped hopper 5.

[0048] Due to the outer surface of the distributor body 31 being a conical surface, the coal sample slides outward and downward. The inner edge of the sector-shaped hopper 5 is near the lower part of the outer peripheral edge of the distributor body 31, and the coal sample falling from the channel 33 will fall into the sector-shaped hopper 5.

[0049] During sampling, the driving motor 4 is started, and the coal sample is placed on the coal sieve 2 for screening to screen out the coal sample with large particles, and the coal sample meeting the particle size requirements falls. The falling coal sample is guided by the feeding funnel 13 to slide downward and falls from the feeding port 131. The coal sample falling from the feeding port 131 is dispersed by the top end of the distributor body 31 and falls on the conical surface of the distributor body 31. Then it slides down through the channel 33 and finally slides into the sector-shaped hopper 5.

[0050] Since the distributor body 31 is always rotating, the coal sample in each channel 33 will fall into each sector-shaped hopper 5 in sequence. Therefore, even if there is less coal sample in some channels 33 and more coal sample in some channels 33, finally, the amount of coal sample in each sector-shaped hopper 5 will not be much different and will not have a significant impact.

[0051] In summary, the coal sample screening device provided by the present utility model realizes the uniform conveyance of coal samples to multiple fan-shaped hoppers 5 below by arranging the coal sample distributor 3 and the drive motor 4, improving the uniformity of coal sample loading in each fan-shaped hopper 5.

[0052] In one embodiment, as Figure 2 shown, the top end of the distributor main body 31 is directly below the blanking port 131, which is conducive to evenly dispersing the coal samples falling from the blanking port 131 to the surroundings by the top end of the distributor main body 31.

[0053] In one embodiment, as Figures 2-3 and Figures 6-7 shown, a preset distance is left between the top end of the baffle 32 and the top end of the distributor main body 31.

[0054] In this embodiment, in order to facilitate the sliding of the coal samples into the channel 33, the top end of the baffle 32 is lower than the top end of the distributor main body 31, and the lower end of the baffle 32 extends to the lower edge of the distributor main body 31. Since the top end of the baffle 32 is not connected to the top end of the distributor main body 31, the part above the baffle 32 is a conical surface, and the coal samples will automatically slide down to each channel 33 through the conical surface.

[0055] In one embodiment, as Figures 6-7 shown, the distributor main body 31 is a conical cover plate, and the bottom of the conical cover plate has a conical notch 311. The rotating shaft 6 is connected to the conical cover plate through a connecting bracket 7, and the connecting bracket 7 is located in the conical notch 311.

[0056] In this embodiment, the distributor main body 31 is in an umbrella shape and is a conical cover plate, which is beneficial to reducing the structural weight. The conical notch 311 is naturally formed at the bottom of the conical cover plate.

[0057] The upper end of the rotating shaft 6 is connected to the conical cover plate through a connecting bracket 7, and the connecting bracket 7 is located in the conical notch 311, which can reduce the height dimension.

[0058] In one embodiment, as Figures 6-7 shown, the connecting bracket 7 includes a vertically extending bracket sleeve 71, a sleeve top plate 72 provided at the top of the bracket sleeve 71, and a bracket side plate 73 provided at the edge of the sleeve top plate 72 and extending obliquely downward.

[0059] The bracket sleeve 71 is sleeved on the upper end of the rotating shaft 6, and the bracket side plate 73 is attached to and connected to the conical cover plate.

[0060] In this embodiment, the connecting bracket 7 includes a bracket sleeve 71, a sleeve top plate 72 and a bracket side plate 73. The bracket sleeve 71 extends vertically, and the bracket sleeve 71 is sleeved on the upper end of the rotating shaft 6 and can be locked by a pin.

[0061] The sleeve top plate 72 is provided at the top of the support sleeve 71, and the sleeve top plate 72 is circular. The support side plate 73 is a circular side plate, which is connected to the edge of the sleeve top plate 72 and extends obliquely downward. The inclination angle of the support side plate 73 is the same as that of the conical cover plate, so that the support side plate 73 fits with the conical cover plate, improving the connection stability. The support side plate 73 and the conical cover plate can be connected by pins.

[0062] The support sleeve 71, the sleeve top plate 72 and the support side plate 73 can be connected separately or integrally provided.

[0063] In one embodiment, as Figure 2 and Figure 5 shown, the bottom of the chassis 1 has an installation cavity 14, and the drive motor 4 is installed in the installation cavity 14.

[0064] A sheath 8 for protecting the rotating shaft 6 is also provided in the chassis 1. The sheath 8 extends from the installation cavity 14 to the coal sample distributor 3, and the rotating shaft 6 passes through the sheath 8 with a clearance.

[0065] In this embodiment, an installation cavity 14 is provided at the bottom of the chassis 1, and the drive motor 4 is installed in the installation cavity 14 to play a protective role. An opening can be provided at the position of the chassis side plate 11 corresponding to the installation cavity 14 for installing the drive motor 4 and realizing ventilation and heat dissipation.

[0066] A sheath 8 is also provided in the chassis 1. It is connected to the top plate of the installation cavity 14 and extends towards the coal sample distributor 3. The rotating shaft 6 passes through the sheath 8 with a clearance, and the sheath 8 plays a role in protecting the rotating shaft 6. The rotating shaft 6 can rotate relative to the sheath 8.

[0067] In one embodiment, as Figure 5 shown, a bearing 61 is assembled between the rotating shaft 6 and the sheath 8, which is beneficial to improving the assembly stability of the rotating shaft 6 and the sheath 8 and realizing the rotation of the rotating shaft 6.

[0068] In one embodiment, as Figure 2 shown, a bracket 9 is connected around the sheath 8, and the bracket 9 includes a hopper support plate 95 for supporting the fan-shaped hopper 5.

[0069] In this embodiment, a bracket 9 is connected to the outside of the sheath 8. A circle of hopper support plates 95 is provided at the bottom of the bracket 9 for supporting the fan-shaped hopper 5 and providing a support and placement position for the fan-shaped hopper 5.

[0070] In one embodiment, as Figure 5 shown, the bracket 9 includes a bracket sleeve 91 sleeved on the sheath 8, a bracket bottom plate 92 provided at the lower end of the bracket sleeve 91, and a bracket top plate 93 provided at the upper end of the bracket sleeve 91.

[0071] The positioning substrate 81 is provided on the sheath 8, and the bracket top plate 93 is connected to the positioning substrate 81.

[0072] One end of the hopper support plate 95 is connected to the bottom of the bracket bottom plate 92.

[0073] In this embodiment, a circle of positioning substrates 81 is provided on the upper half of the sheath 8, and the positioning substrates 81 are integrally provided or welded with the sheath 8.

[0074] The bracket 9 includes a bracket sleeve 91, a bracket bottom plate 92 and a bracket top plate 93. The bracket sleeve 91 is sleeved on the sheath 8, and according to needs, a bearing can be assembled between the two to achieve axial positioning.

[0075] The bracket top plate 93 is connected to the upper end of the bracket sleeve 91 and extends outward. The bracket top plate 93 is connected to the positioning substrate 81 by bolts, which plays a role in connecting the bracket 9 and also plays a role in preventing the bracket 9 from rotating. The bracket bottom plate 92 is connected to the lower end of the bracket sleeve 91 and extends outward. One end of the hopper support plate 95 is connected to the bottom of the bracket bottom plate 92 by bolts, and the main body of the hopper support plate 95 extends radially towards the chassis side plate 11 to support the fan-shaped hopper 5.

[0076] In one of the embodiments, as Figure 5 shown, a strengthening arm 94 is connected between the bracket bottom plate 92 and the bracket sleeve 91 to improve the connection stability between the bracket bottom plate 92 and the bracket sleeve 91. The strengthening arm 94 can be welded to the bracket bottom plate 92 and the bracket sleeve 91 respectively.

[0077] According to needs, the above technical solutions can be combined to achieve the best technical effect.

[0078] The above are only the principles and preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, based on the principles of the present invention, several other variations can be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A coal sample screening device, characterized in that, It includes a chassis, a coal sieve, a coal sample distributor, a drive motor for driving the rotation of the coal sample distributor, and a plurality of sector-shaped hoppers for receiving the coal samples distributed by the coal sample distributor; A door plate that can be opened and closed is provided on the side plate of the chassis of the chassis. An inlet hopper is provided in the chassis. The coal sieve is detachably provided on the top of the chassis and above the inlet hopper; The coal sample distributor is pivotally installed below the inlet hopper. The coal sample distributor includes a conical distributor body. The top end of the distributor body faces the discharge opening of the inlet hopper. A plurality of baffle plates are spaced on the conical surface of the distributor body. A channel for the material to fall is formed between any two adjacent baffle plates; The drive motor is connected to the chassis, and the drive motor is connected to the distributor body through a rotating shaft; The plurality of sector-shaped hoppers are located below the coal sample distributor and are arranged in a circular pattern in sequence.

2. The coal sample screening device according to claim 1, characterized in that, The top end of the distributor body is directly below the discharge opening.

3. The coal sample screening device according to claim 1, characterized in that A preset distance is left between the top end of the baffle plate and the top end of the distributor body.

4. The coal sample screening device according to claim 1, characterized in that, The distributor body is a conical cover plate, and the bottom of the conical cover plate has a conical notch; The rotating shaft is connected to the conical cover plate through a connecting bracket, and the connecting bracket is located in the conical notch.

5. The coal sample screening device according to claim 4, wherein, The connecting bracket includes a vertically extending bracket sleeve, a sleeve top plate provided at the top of the bracket sleeve, and a bracket side plate provided at the edge of the sleeve top plate and extending obliquely downward; The bracket sleeve is sleeved on the upper end of the rotating shaft, and the bracket side plate is attached to and connected to the conical cover plate.

6. The coal sample screening device according to claim 1, characterized in that, The bottom of the chassis has an installation cavity, and the drive motor is installed in the installation cavity; A protective sheath for protecting the rotating shaft is also provided in the chassis. The protective sheath extends from the installation cavity to the coal sample distributor, and the rotating shaft passes through the protective sheath with a gap.

7. The coal sample screening device according to claim 6, characterized in that, A bearing is assembled between the rotating shaft and the protective sheath.

8. The coal sample screening device according to claim 6, wherein, A bracket is connected around the protective sheath. The bracket includes a hopper support plate for supporting the sector-shaped hopper.

9. The coal sample screening device according to claim 8, characterized in that, The bracket includes a bracket sleeve sleeved on the protective sheath, a bracket bottom plate provided at the lower end of the bracket sleeve, and a bracket top plate provided at the upper end of the bracket sleeve; A positioning base plate is provided on the protective sheath, and the bracket top plate is connected to the positioning base plate; One end of the hopper support plate is connected to the bottom of the bracket bottom plate.

10. The coal sample screening device according to claim 9, wherein, A strengthening arm is connected between the bracket bottom plate and the bracket sleeve.

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