A double-reduction device for coal sampling

Abstract

The utility model belongs to the technical field of division device, especially a coal sampling double division device, in the process of using, the existing division device is inconvenient to clean inside, leads to fine particle coal powder to adhere, accumulate in the inner wall, grid groove etc. place, finally leads to the problem of blockage, makes equipment unable normal operation, the present scheme is proposed, it includes casing, base, first distribution groove and second distribution groove, casing fixed mounting is in the top of base, the side of casing is equipped with two first slip mouth, first distribution groove and second distribution groove are slidably installed in two first slip mouth, the utility model discloses a distribution groove and collection box design can be integrally pulled, combine motor drive's synchronous rotation distribution mechanism, realize coal sample high -efficient automation division at the same time, make equipment convenient to clean thoroughly, fundamentally solve the blockage problem caused by fine particle coal powder adhesion, accumulation, guarantee the long -term stable operation of equipment.

Description

Technical Field

[0001] This application relates to the field of coal reduction device technology, and in particular to a coal sampling dual reduction device. Background Technology

[0002] Sample reduction is the process of dividing a sample crushed to a certain particle diameter into several portions of equally reliable samples, or reducing the size of the original sample before processing or crushing, in accordance with certain requirements. Its purpose is to reduce the workload of subsequent crushing or the amount of original sample transported, and to speed up sample processing while ensuring sample reliability. A sample reducer is a device that uses mechanical cutting to remove one or more portions of a coal sample to reduce sample mass. Its purpose is also to reduce the workload of subsequent crushing or the amount of original sample transported, and to speed up sample processing, while ensuring sample reliability.

[0003] Patent document CN115728111A discloses a vertical rotary sample divider and its method, belonging to the technical field of sample reduction. The vertical rotary sample divider includes a feed hopper, a shell, a sample collection hopper, a drive device, a waste collection hopper, and a rotary dividing disc; the rotary dividing disc is vertically arranged within the shell. This vertical rotary sample divider reduces its size in the horizontal direction, allowing the main dividing part to be arranged within a space the size of the feed pipe diameter. During sample reduction, the discharge port is vertical, allowing the sample to directly enter the sample collection hopper through the discharge port, preventing blockage within the divider. The reduction ratio can be intuitively obtained by simply calculating the ratio of sample troughs with discharge ports to all sample troughs. Patent document CN105043834B discloses a sample divider, comprising a divider body (1) and at least three receiving devices (2) disposed below the divider body (1), the at least three receiving devices (2) being arranged in parallel; the divider body (1) is provided with at least three types of distributing grooves (3), the outlets of the at least three types of distributing grooves (3) corresponding one-to-one with the at least three receiving devices (2), all distributing grooves (3) being isolated from each other and arranged in parallel, their arrangement direction being perpendicular to the arrangement direction of the at least three receiving devices (2). This allows material falling into the distributing grooves (3) to fall into at least three different receiving devices (2), thereby being divided into at least three parts, thus obtaining at least two samples. That is, multiple samples can be obtained through a single reduction, effectively improving the efficiency of sample preparation and reducing the sample reduction process, thereby reducing sample loss and contamination.

[0004] However, the aforementioned patent documents make it inconvenient to clean the inside of the separator during use, causing fine coal powder to adhere and accumulate on the inner wall and grid of the separator, eventually leading to blockage and preventing the equipment from operating normally. To address this issue, we propose a coal sampling dual-splitting device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing coal sampling dual reduction devices, which are difficult to clean internally during use, leading to the adhesion and accumulation of fine coal powder on the inner wall and grid, ultimately causing blockages and preventing the equipment from operating normally.

[0006] The coal sampling dual-reduction device provided in this application adopts the following technical solution: A coal sampling dual-reduction device includes a shell, a base, a first distributing trough, and a second distributing trough. The shell is fixedly installed on the top of the base. Two first sliding openings are formed on one side of the shell. The first and second distributing troughs are slidably installed in the two first sliding openings, respectively. First pull plates are fixedly connected to the outer sides of both the first and second distributing troughs. A feed inlet is formed on the top of the shell. A reduction mechanism is provided inside the first and second distributing troughs for reducing the coal sample. The device also includes: The bracket is fixedly installed on the other side of the housing; The collection box has a waste trough and a sample trough on its top. A second pull plate is fixedly installed on the outside of the collection box, and a second sliding opening is provided on the shell. The collection box is slidably installed in the second sliding opening.

[0007] Furthermore, the reducing mechanism includes two rotating shafts, and both the first and second distributing grooves are provided with empty grooves. The bottom inner walls of both the first and second distributing grooves are provided with first through holes. The two rotating shafts are respectively rotatably installed in the two first through holes. Distributing plates are fixedly installed on the outer sides of both rotating shafts. When the rotating shafts rotate, the rotating shafts drive the distributing plates to rotate.

[0008] Furthermore, a second bevel gear is fixedly installed at one end of each of the two rotating shafts, and a first bevel gear is fixedly installed at one end of each of the two transmission rods. The first bevel gear meshes with the second bevel gear, and when the transmission rod rotates, the first bevel gear drives the second bevel gear to rotate.

[0009] Furthermore, a motor is fixedly installed on the outside of the bracket, and the output shaft of the motor is fixedly connected to one end of the rectangular rod. Sprockets are fixedly installed on the outside of both rectangular rods, and the same chain meshes on the two sprockets. When the rectangular rods rotate, the two sprockets are driven by the chain.

[0010] Furthermore, two third through holes are provided on one side of the housing, and rectangular rods are rotatably installed in both third through holes. The two rectangular rods are slidably installed in two rectangular slots, and both rectangular rods are rotatably connected to the bracket. When the rectangular rods rotate, they drive the transmission rods to rotate through the rectangular slots.

[0011] Furthermore, a second through hole is provided on one side of both the first and second material distribution troughs. The two second through holes are respectively connected to the two empty troughs. A transmission rod is rotatably installed in each of the two second through holes, and a rectangular groove is provided at one end of each of the two transmission rods.

[0012] Furthermore, the bottom inner wall of the first material distribution trough is provided with two symmetrical first discharge ports, and the bottom inner wall of the second material distribution trough is provided with two symmetrical second discharge ports.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. This solution allows the first and second material distribution troughs to be completely extracted from the casing, enabling users to directly and thoroughly clean the inner walls of the material distribution troughs, the material distribution plates, and the collection box. This effectively solves the clogging problem caused by the adhesion and accumulation of fine coal powder, ensuring the long-term stable operation of the equipment. 2. This scheme uses the directional rotation of the distribution plate to precisely divert coal samples to different outlets, and finally collects them separately in the independent sample trough and waste trough in the collection box, achieving clear separation of samples and waste and avoiding cross-contamination.

[0014] This invention, through the design of a pull-out material trough and collection box, combined with a motor-driven synchronous rotating material distribution mechanism, achieves efficient and automated coal sample reduction while facilitating thorough cleaning of the equipment. This fundamentally solves the clogging problem caused by the adhesion and accumulation of fine coal powder, ensuring the long-term stable operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a coal sampling dual reduction device proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the first and second material distribution troughs of a coal sampling dual-reduction device proposed in this utility model.

[0017] Figure 3 This is a top view of the first and second material distribution troughs of a coal sampling dual-reduction device proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the reduction mechanism of a coal sampling dual reduction device proposed in this utility model.

[0019] Reference numerals: 1. Shell; 2. Base; 3. Bracket; 4. Feed inlet; 5. First pull plate; 6. Second pull plate; 7. Collection box; 8. Sample slot; 9. Waste slot; 10. First distribution slot; 11. Second distribution slot; 12. First discharge port; 13. Second discharge port; 14. Motor; 15. Distribution plate; 16. Shaft; 17. Rectangular rod; 18. Transmission rod; 19. First bevel gear; 20. Second bevel gear; 21. Sprocket; 22. Chain. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0021] Reference Figures 1-4 A coal sampling dual-reduction device includes a housing 1, a base 2, a first distributing trough 10, and a second distributing trough 11. The housing 1 is fixedly installed on the top of the base 2. Two first sliding openings are opened on one side of the housing 1. The first distributing trough 10 and the second distributing trough 11 are slidably installed in the two first sliding openings, respectively. First pull plates 5 are fixedly connected to the outer sides of both the first distributing trough 10 and the second distributing trough 11. A feed inlet 4 is opened on the top of the housing 1. A reduction mechanism is provided in the first distributing trough 10 and the second distributing trough 11 for reducing the coal sample. The device also includes: Bracket 3 is fixedly installed on the other side of housing 1; The collection box 7 has a waste trough 9 and a sample trough 8 on its top. A second pull plate 6 is fixedly installed on the outside of the collection box 7. A second sliding opening is provided on the housing 1. The collection box 7 is slidably installed in the second sliding opening.

[0022] In this embodiment, the coal sample reduction mechanism includes two rotating shafts 16. Both the first and second distribution troughs 10 and 11 have empty slots. The bottom inner walls of both the first and second distribution troughs 10 and 11 have first through holes. The two rotating shafts 16 are rotatably installed in the two first through holes. Distribution plates 15 are fixedly installed on the outer sides of both rotating shafts 16. When the rotating shafts 16 rotate, they drive the distribution plates 15 to rotate. The distribution plates 15 are curved or have inclined guide plates to improve the uniformity of coal sample distribution. The inner walls of the distribution plates 15, rotating shafts 16, first distribution troughs 10, and second distribution troughs 11 should be made of highly wear-resistant materials (such as high-chromium cast iron, ceramic composite materials, or polyurethane coating). The first material distribution trough 10, the second material distribution trough 11, and the collection box 7 are all connected to a magnetic locking structure to ensure accurate working position. A motor 14 is fixedly installed on the outside of the bracket 3. The output shaft of the motor 14 is fixedly connected to one end of the rectangular rod 17. A sprocket 21 is fixedly installed on the outside of both rectangular rods 17. The same chain 22 is meshed on the two sprockets 21. When the rectangular rod 17 rotates, the two sprockets 21 are driven by the chain 22. The bottom inner wall of the first material distribution trough 10 has two symmetrical first discharge ports 12, and the bottom inner wall of the second material distribution trough 11 has two symmetrical second discharge ports 13.

[0023] In this embodiment, a second bevel gear 20 is fixedly installed at one end of each of the two rotating shafts 16, and a first bevel gear 19 is fixedly installed at one end of each of the two transmission rods 18. The first bevel gear 19 meshes with the second bevel gear 20. When the transmission rod 18 rotates, the first bevel gear 19 drives the second bevel gear 10 to rotate. Two third through holes are opened on one side of the housing 1. A rectangular rod 17 is rotatably installed in each of the two third through holes. The two rectangular rods 17 are slidably installed in the two rectangular slots respectively. The two rectangular rods 17 are rotatably connected to the bracket 3. When the rectangular rods 17 rotate, they drive the transmission rod 18 to rotate through the rectangular slots. A second through hole is opened on one side of the first material distribution groove 10 and the second material distribution groove 11. The two second through holes are respectively connected to the two empty slots. A transmission rod 18 is rotatably installed in each of the two second through holes. A rectangular slot is opened at one end of each of the two transmission rods 18.

[0024] The implementation principle of the coal sampling double-reduction device in this application embodiment is as follows: During use, the coal sample is evenly fed into the housing 1 through the feed inlet 4. The motor 14 is started, and the motor's output shaft drives the connected rectangular rod 17 to rotate. The sprocket 21 on the rectangular rod 17 transmits power to the sprocket 21 on the other rectangular rod 17 via the chain 22, causing the two rectangular rods 17 to rotate synchronously. The two rectangular rods 17 are respectively inserted into the rectangular slots at the ends of two transmission rods 18, transmitting the rotational motion to the transmission rods 18. The first bevel gear 19 at the other end of the transmission rod 18 meshes with the second bevel gear 20 fixed on the rotating shaft 16, converting the rotational motion of the horizontal axis into the rotational motion of the vertical axis. The rotating shaft 16 drives the top distribution plate 15 to rotate continuously within the distribution trough. The coal sample falling from the feed inlet 4 is deflected by the rotating distribution plate 15. Under the action, the coal sample is evenly swept to both sides. In the first distribution trough 10, the coal sample is swept to the two first discharge ports 12, and in the second distribution trough 11, the coal sample is swept to the two second discharge ports 13. According to the preset reduction process, one of the first discharge ports 12 and 13 of the first distribution trough 10 and the second distribution trough 11 corresponds to the sample trough 8 of the collection box 7 to collect the retained sample; the other first discharge port 12 and 13 corresponds to the waste trough 9 to collect the waste. Finally, the sample and waste are clearly separated and collected in different compartments of the collection box 7. When cleaning is required, simply pull the first pull plate 5 to pull out the first distribution trough 10 and the second distribution trough 11, and pull the second pull plate 6 to pull out the collection box 7 to thoroughly clean the inside of the equipment, effectively preventing coal powder accumulation and blockage. Example 2

[0025] The difference between this embodiment and Embodiment 1 is that rubber sealing strips are installed on the outside of the first material distribution trough 10, the second material distribution trough 11 and the collection box 7. The rubber sealing strips can effectively prevent coal powder from entering the sliding gap.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coal sampling dual-reduction device, comprising a shell (1), a base (2), a first distribution trough (10), and a second distribution trough (11), characterized in that: The housing (1) is fixedly installed on the top of the base (2). Two first sliding openings are opened on one side of the housing (1). The first material distribution groove (10) and the second material distribution groove (11) are slidably installed in the two first sliding openings respectively. The outer sides of the first material distribution groove (10) and the second material distribution groove (11) are fixedly connected with first pull plates (5). The top of the housing (1) is provided with a feed inlet (4). The first material distribution groove (10) and the second material distribution groove (11) are provided with a reduction mechanism, which is used to reduce the coal sample; it also includes: The bracket (3) is fixedly installed on the other side of the housing (1); The top of the collection box (7) is provided with a waste trough (9) and a sample trough (8). A second pull plate (6) is fixedly installed on the outside of the collection box (7). A second sliding opening is provided on the shell (1). The collection box (7) is slidably installed in the second sliding opening.

2. The coal sampling dual-reduction device according to claim 1, characterized in that: The bottom inner wall of the first material distribution trough (10) is provided with two symmetrical first discharge ports (12), and the bottom inner wall of the second material distribution trough (11) is provided with two symmetrical second discharge ports (13).

3. The coal sampling dual-reduction device according to claim 2, characterized in that: The reducing mechanism includes two rotating shafts (16), and empty slots are provided in both the first dividing groove (10) and the second dividing groove (11). First through holes are provided on the bottom inner walls of both the first dividing groove (10) and the second dividing groove (11). The two rotating shafts (16) are rotatably installed in the two first through holes respectively, and dividing plates (15) are fixedly installed on the outer side of both rotating shafts (16).

4. The coal sampling dual-reduction device according to claim 3, characterized in that: The first material distribution groove (10) and the second material distribution groove (11) are provided with a second through hole on one side. The two second through holes are respectively connected to the two empty grooves. A transmission rod (18) is rotatably installed in the two second through holes. A rectangular groove is provided at one end of the two transmission rods (18).

5. A coal sampling dual-reduction device according to claim 4, characterized in that: A second bevel gear (20) is fixedly installed at one end of each of the two rotating shafts (16), and a first bevel gear (19) is fixedly installed at one end of each of the two transmission rods (18). The first bevel gear (19) meshes with the second bevel gear (20).

6. The coal sampling dual-reduction device according to claim 5, characterized in that: Two third through holes are provided on one side of the housing (1), and rectangular rods (17) are rotatably installed in both third through holes. The two rectangular rods (17) are slidably installed in the two rectangular slots respectively, and the two rectangular rods (17) are rotatably connected to the bracket (3).

7. A coal sampling dual-reduction device according to claim 6, characterized in that: A motor (14) is fixedly installed on the outside of the bracket (3). The output shaft of the motor (14) is fixedly connected to one end of the rectangular rod (17). A sprocket (21) is fixedly installed on the outside of both rectangular rods (17). The same chain (22) is meshed on the two sprockets (21).

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