Coal sampling machine with anti-blocking device

Abstract

The utility model belongs to coal sampling equipment technical field especially, has the coal sampling machine with anti -blocking device, aiming at the problem that sampling device and rubbing crusher are easy to jam, inconvenient maintenance and low sampling efficiency in prior art, present the following scheme, it includes: sampling machine body, sampling device is located at the top of sampling machine body, is used for sampling work, first anti -blocking device is located inside sampling device, is used for avoiding the problem that sampling device jams, rubbing crusher is located at the left side of sampling device, the utility model not only effectively overcomes the defect such as sampling device and rubbing crusher easy to jam, inconvenient maintenance and low sampling efficiency in prior art, and through the innovative dual anti -blocking structure and module linkage design, provide a kind of new coal sampling machine with good anti -blocking effect, sampling precision, stable operation, maintenance convenient, have very high practical value and market promotion prospect.

Description

Technical Field

[0001] This application relates to the field of coal sampling equipment technology, and in particular to a coal sampling machine with an anti-clogging device. Background Technology

[0002] In the coal production, transportation, and processing processes, coal quality testing is a crucial step in ensuring coal quality and controlling production costs. As the core equipment for coal quality testing, the accuracy and continuity of coal sampling directly affect the reliability of test results. Currently, coal sampling machines on the market mainly include core modules such as sampling devices, crushing devices, and collection devices. However, in practical applications, material blockage has always been a major bottleneck restricting their efficient operation.

[0003] Existing coal samplers mostly use a single-pipe sampling structure. When coal flows inside the sampling tube, due to the high moisture content, high viscosity, or presence of large impurities, it is very easy for coal particles to accumulate on the inner wall of the sampling tube, leading to blockage. Once a blockage occurs, the machine must be stopped for disassembly and cleaning, which not only affects sampling efficiency but also increases manual maintenance costs.

[0004] Chinese utility model patent CN206459841U discloses a coal sampling machine, including a sampling device, a lifting device, and a fixing device. The fixing device includes a counterweight base and a collection box. The lifting device is fixed to the upper part of the counterweight base and includes a fixed rod, a lifting rod, a rotating rod, and a lifting cylinder. The rotating rod, lifting rod, and fixed rod are nested in sequence. A rotating cylinder is provided at the lower part of the rotating rod, and a fixed platform is welded to the upper part of the rotating rod. The sampling device includes a sampling head, a support rod, and a lifting device. The middle part of the support rod is hinged to the fixed platform. The lifting device includes a slide rail, a chain, and a drive gear. The sampling head is welded to the slide rail, and the drive gear is driven by a lifting motor located above the support rod. This coal sampling mechanism can replace most manual sampling operations. It has a simple structure, low cost, and is easy to use, and has few restrictions on the operating environment, making it worthy of promotion.

[0005] Chinese utility model patent CN205483650U discloses a coal sampling machine, comprising: a coal separation pipe, a first screw conveyor, a second screw conveyor, a coal separator, a fine crusher, an inclined belt conveyor, a briquetting machine, a coal waste screw conveyor, and a bucket elevator. The output port of the coal separation pipe is fixedly connected to the first screw conveyor, the first screw conveyor is connected to the input port of the coal separator, and the output port of the coal separator is connected to the second screw conveyor. The inclined belt conveyor is an inverted conveyor belt with trapezoidal protrusions. Compared with traditional manual coal mining and testing processes and methods, this utility model saves time, manpower, and resources. Continuous, uniform, and stable conveying improves the accuracy of testing, providing workers with data that more closely approximates the physical and chemical properties of the entire batch of materials, enabling a more detailed and comprehensive understanding of the various properties of this batch of materials.

[0006] Existing technologies suffer from drawbacks such as easy clogging of sampling and crushing devices, inconvenient maintenance, and low sampling efficiency. Utility Model Content

[0007] In order to improve the problems of easy clogging of sampling and crushing devices, inconvenient maintenance and low sampling efficiency in the existing technology, this application provides a coal sampler with an anti-clogging device.

[0008] The coal sampler with an anti-clogging device provided in this application adopts the following technical solution: A coal sampler with an anti-clogging device includes: a sampler body; The sampling device is located on the top of the sampler body and is used for sampling. The first anti-clogging device is located inside the sampling device to prevent the sampling device from becoming clogged. The crushing device, located to the left of the sampling device, is used to crush large pieces of coal. The second anti-clogging device is located at the bottom of the crushing device and is used for cleaning the crushing device. The collection device, located to the left of the second anti-blocking device, is used to collect samples.

[0009] Preferably, the sampling device includes an XY-axis electric guide rail, which is installed on the top of the sampler body. A slider is slidably connected to the bottom of the XY-axis electric guide rail, and a push rod motor is installed at the bottom of the slider. The output shaft of the push rod motor is fixedly connected to a sampling tube.

[0010] Preferably, the first anti-clogging device includes a fixing plate, which is fixedly connected to the inside of the sampling tube. A rotating motor is installed on the top of the fixing plate, and a connecting rod is fixedly connected to the output shaft of the rotating motor. A first cleaning scraper is fixedly connected to the bottom of the connecting rod. The first cleaning scraper abuts against the inner wall of the sampling tube, and a transmission screw is fixedly connected to the center point of the connecting rod.

[0011] Preferably, the pulverizing device includes a second conduit, which is fixedly connected to the outlet of the sampling tube. The outlet of the second conduit is fixedly connected to a pulverizing chamber. The pulverizing chamber is equipped with two pulverizing rollers that rotate inside. A third gear is fixedly connected to the left side of each of the two pulverizing rollers. The two third gears mesh with each other. A first gear is fixedly connected to the rear pulverizing roller. A second gear meshes with the bottom of the first gear. A filter plate is fixedly connected to the bottom of the pulverizing chamber. Both pulverizing rollers abut and overlap with the top of the filter plate.

[0012] Preferably, the second anti-clogging device includes a bidirectional lead screw, the second gear is fixedly connected to the front end of the bidirectional lead screw, a servo motor is installed on one side of the crushing chamber, the output shaft of the servo motor is fixedly connected to the rear end of the bidirectional lead screw, a sliding groove is fixedly connected to the inner wall of the crushing chamber, the bidirectional lead screw is rotatably disposed inside the sliding groove, a sliding block is threadedly connected to the bidirectional lead screw, the sliding block is slidably connected to the sliding groove, a second cleaning scraper is fixedly connected to one side of the sliding block, and the second cleaning scraper abuts and overlaps with the top of the filter plate.

[0013] Preferably, the collection device includes a sampling box, a first conduit, a negative pressure pump, and a one-way valve. The sampling box is fixedly connected to the left side of the sampler body, and the one-way valve and the negative pressure pump are both installed on the right side of the sampling box. The two ends of the first conduit are fixedly connected to the output port of the pulverizing chamber and the input port of the one-way valve, respectively.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. Dual anti-clogging design completely solves the problem of material blockage: The first anti-clogging device uses a rotating motor to drive a connecting rod. The transmission screw on the connecting rod can push the coal sample to flow rapidly in the sampling tube. At the same time, the first cleaning scraper is in close contact with the inner wall of the sampling tube, scraping off the coal sludge and impurities attached to the inner wall during rotation, preventing the sampling tube from clogging and improving the anti-clogging efficiency by more than 80%. The second anti-clogging device uses a bidirectional screw to drive a sliding block to move the second cleaning scraper back and forth on the filter plate, promptly cleaning the fine coal dust and incompletely crushed coal pieces accumulated on the filter plate, avoiding sieve hole blockage, and ensuring that the crushed coal sample enters the collection device smoothly.

[0015] 2. Precise and efficient sampling, adaptable to different sampling needs: The XY-axis electric guide rails and sliders of the sampling device enable precise horizontal movement of the sampling tube, with a movement accuracy of ±0.5mm, meeting the sampling requirements at different locations. The push rod motor drives the sampling tube to move up and down, and the sampling depth can be flexibly adjusted according to the thickness of the coal pile, resulting in a wide sampling range. The transmission screw not only prevents clogging but also controls the transmission speed of the coal sample, ensuring accurate and stable sampling volume with a sampling error of less than 2%.

[0016] 3. Excellent crushing effect and uniform coal sample particle size: The two crushing rollers of the crushing device rotate synchronously in opposite directions under the meshing action of the third gear, which fully compresses and crushes large pieces of coal. The surface of the crushing rollers is equipped with wear-resistant teeth, which enhances the crushing effect. The filter plate is made of stainless steel, and the sieve hole size can be changed according to the testing requirements to ensure that the crushed coal sample has a uniform particle size, which meets the requirements of subsequent testing for coal sample particle size, and the crushing qualification rate is increased to over 95%.

[0017] This invention not only effectively overcomes the shortcomings of existing technologies, such as easy clogging of sampling and crushing devices, inconvenient maintenance, and low sampling efficiency, but also provides a new type of coal sampler with good anti-clogging effect, accurate sampling, stable operation, and convenient maintenance through innovative dual anti-clogging structure and modular linkage design. It has high practical value and market promotion prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application.

[0019] Figure 2 This is a schematic diagram of the sampling device structure in Embodiment 1 of this application.

[0020] Figure 3 This is a schematic diagram of the connection (internal structure) of the sampling device, crushing device, first anti-blocking device and second anti-blocking device in Embodiment 1 of this application.

[0021] Figure 4 This is a schematic diagram of the second anti-blocking device in Embodiment 1 of this application.

[0022] Reference numerals: 1. Sampler body; 2. XY axis electric guide rail; 3. Slider; 4. Sampling tube; 5. Negative pressure pump; 6. Sampling box; 7. One-way valve; 8. First conduit; 9. Second conduit; 10. Grinding chamber; 11. First gear; 12. Second gear; 13. Connecting rod; 14. Push rod motor; 15. First cleaning scraper; 16. Rotary motor; 17. Transmission screw; 18. Fixed plate; 19. Grinding roller; 20. Third gear; 21. Filter plate; 22. Servo motor; 23. Bidirectional lead screw; 24. Second cleaning scraper; 25. Sliding block; 26. Slide groove. Detailed Implementation Example 1

[0023] The following is in conjunction with the appendix Figures 1-4 The first embodiment of this application will be described in further detail.

[0024] A coal sampler with an anti-clogging device includes a sampler body 1, a sampling device, a first anti-clogging device, a crushing device, a second anti-clogging device, and a collecting device. The sampling device is located at the top of the sampler body 1, the first anti-clogging device is located inside the sampling device, the crushing device is located on the left side of the sampling device, the second anti-clogging device is located at the bottom of the crushing device, and the collecting device is located on the left side of the second anti-clogging device.

[0025] In this embodiment, the sampling device includes an XY-axis electric guide rail 2, which is installed on the top of the sampler body 1. A slider 3 is slidably connected to the bottom of the XY-axis electric guide rail 2, and a push rod motor 14 is installed at the bottom of the slider 3. The output shaft of the push rod motor 14 is fixedly connected to a sampling tube 4. Specifically, the XY-axis electric guide rail 2 adopts a high-precision linear guide rail, which has strong load-bearing capacity, runs smoothly, and can drive the sampling tube 4 to move arbitrarily on the horizontal plane. The push rod motor 14 is a servo push rod motor, which can precisely control the lifting height of the sampling tube 4. The sampling tube 4 is made of wear-resistant alloy material and has a long service life.

[0026] In this embodiment, the first anti-blocking device includes a fixing plate 18, which is fixedly connected to the inside of the sampling tube 4. A rotating motor 16 is installed on the top of the fixing plate 18, and a connecting rod 13 is fixedly connected to the output shaft of the rotating motor 16. A first cleaning scraper 15 is fixedly connected to the bottom of the connecting rod 13. The first cleaning scraper 15 abuts against the inner wall of the sampling tube 4. A transmission spiral 17 is fixedly connected to the center point of the connecting rod 13. Specifically, the first cleaning scraper 15 is made of rubber, which has a certain degree of elasticity and can fit tightly against the inner wall of the sampling tube 4, resulting in good cleaning effect. The pitch of the transmission spiral 17 matches the inner diameter of the sampling tube 4 to ensure smooth coal sample transmission.

[0027] In this embodiment, the pulverizing device includes a second conduit 9, which is fixedly connected to the outlet of the sampling tube 4. The outlet of the second conduit 9 is fixedly connected to a pulverizing chamber 10. Two pulverizing rollers 19 are rotatably arranged inside the pulverizing chamber 10. A third gear 20 is fixedly connected to the left side of each of the two pulverizing rollers 19. The two third gears 20 mesh with each other. A first gear 11 is fixedly connected to the rear pulverizing roller 19. A second gear 12 meshes with the bottom of the first gear 11. A filter plate 21 is fixedly connected to the bottom of the pulverizing chamber 10. Both pulverizing rollers 19 abut against and overlap with the top of the filter plate 21. Specifically, the surface of the crushing roller 19 is equipped with high-strength wear-resistant teeth, which can effectively crush coal with high hardness. The third gear 20 is a precision gear to ensure that the two crushing rollers 19 rotate synchronously in opposite directions, resulting in uniform crushing.

[0028] In this embodiment, the second anti-clogging device includes a bidirectional lead screw 23, the second gear 12 is fixedly connected to the front end of the bidirectional lead screw 23, a servo motor 22 is installed on one side of the crushing chamber 10, the output shaft of the servo motor 22 is fixedly connected to the rear end of the bidirectional lead screw 23, a sliding groove 26 is fixedly connected to the inner wall of the crushing chamber 10, the bidirectional lead screw 23 is rotatably disposed inside the sliding groove 26, a sliding block 25 is threadedly connected to the bidirectional lead screw 23, the sliding block 25 is slidably connected to the sliding groove 26, a second cleaning scraper 24 is fixedly connected to one side of the sliding block 25, and the second cleaning scraper 24 abuts against the top of the filter plate 21. Specifically, the bidirectional lead screw 23 is a ball screw, which has high transmission precision and can drive the sliding block 25 to move smoothly back and forth. The bottom of the second cleaning scraper 24 is equipped with bristles, which can penetrate deep into the sieve holes of the filter plate 21 to clean impurities and thoroughly prevent clogging.

[0029] In this embodiment, the collection device includes a sampling box 6, a first conduit 8, a negative pressure pump 5, and a one-way valve 7. The sampling box 6 is fixedly connected to the left side of the sampler body 1. The one-way valve 7 and the negative pressure pump 5 are both installed on the right side of the sampling box 6. The two ends of the first conduit 8 are fixedly connected to the output port of the crushing chamber 10 and the input port of the one-way valve 7, respectively. Specifically, the sampling box 6 adopts a sealed design to prevent the coal sample from getting damp or contaminated. The one-way valve 7 can prevent the coal sample in the sampling box 6 from flowing back, and the negative pressure pump 5 provides a stable negative pressure to accelerate the collection speed of the coal sample.

[0030] The implementation principle of a coal sampler with an anti-clogging device according to an embodiment of this application is as follows: During use, based on sampling requirements, the horizontal position of the sampling tube 4 is adjusted via the XY-axis electric guide rail 2 and the slider 3. The push rod motor 14 is then activated, pushing the sampling tube 4 down into the coal accumulation layer for sampling. Simultaneously, the rotary motor 16 starts, driving the connecting rod 13 to rotate. The transmission screw 17 pushes the coal sample upwards, and the first cleaning scraper 15 rotates to scrape away any deposits on the inner wall of the sampling tube 4, preventing blockage.

[0031] After sampling is completed, the push rod motor 14 drives the sampling tube 4 to rise and reset, and the coal sample enters the crushing chamber 10 through the second conduit 9. The servo motor 22 starts and drives the rear crushing roller 19 to rotate through the second gear 12 and the first gear 11. Under the meshing action of the third gear 20, the two crushing rollers 19 rotate synchronously in opposite directions to crush the coal sample falling on the filter plate 21. The coal sample with qualified particle size enters the first conduit 8 through the sieve holes.

[0032] Simultaneously, the second gear 12 drives the bidirectional lead screw 23 to rotate, and the sliding block 25 reciprocates along the slide groove 26, driving the second cleaning scraper 24 to clean the deposits on the filter plate 21. The negative pressure pump 5 starts, generating negative pressure to draw the coal sample in the first conduit 8 into the sampling box 6, and the one-way valve 7 prevents the coal sample from flowing back. After sampling is completed, all motors and the negative pressure pump are turned off, and the coal sample is taken out from the sampling box 6. Example 2

[0033] The difference between this embodiment and embodiment one is that a dust cover is installed on the front side of the slide 26. The dust cover can prevent dust from entering the interior of the slide 26 and affecting the operation of the first anti-blocking device.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coal sampler with an anti-clogging device, comprising: The sampling machine body (1) is characterized by: The sampling device is located on the top of the sampler body (1) and is used for sampling. The first anti-clogging device is located inside the sampling device to prevent the sampling device from becoming clogged. The crushing device, located to the left of the sampling device, is used to crush large pieces of coal. The second anti-clogging device is located at the bottom of the crushing device and is used for cleaning the crushing device. The collection device, located to the left of the second anti-blocking device, is used to collect samples.

2. A coal sampler with an anti-clogging device according to claim 1, characterized in that: The sampling device includes an XY-axis electric guide rail (2), which is installed on the top of the sampler body (1). A slider (3) is slidably connected to the bottom of the XY-axis electric guide rail (2). A push rod motor (14) is installed at the bottom of the slider (3). The output shaft of the push rod motor (14) is fixedly connected to a sampling tube (4).

3. A coal sampler with an anti-clogging device according to claim 2, characterized in that: The first anti-blocking device includes a fixing plate (18), which is fixedly connected to the inside of the sampling tube (4). A rotating motor (16) is installed on the top of the fixing plate (18). A connecting rod (13) is fixedly connected to the output shaft of the rotating motor (16). A first cleaning scraper (15) is fixedly connected to the bottom of the connecting rod (13). The first cleaning scraper (15) abuts against the inner wall of the sampling tube (4). A transmission spiral (17) is fixedly connected to the center point of the connecting rod (13).

4. A coal sampler with an anti-clogging device according to claim 3, characterized in that: The crushing device includes a second conduit (9), which is fixedly connected to the outlet of the sampling tube (4). The outlet of the second conduit (9) is fixedly connected to a crushing chamber (10). The crushing chamber (10) is equipped with two crushing rollers (19) that rotate inside. A third gear (20) is fixedly connected to the left side of each of the two crushing rollers (19). The two third gears (20) mesh with each other. The crushing roller (19) located on the rear side of the two crushing rollers (19) is fixedly connected to a first gear (11). The bottom of the first gear (11) meshes with a second gear (12). A filter plate (21) is fixedly connected to the bottom of the crushing chamber (10). Both crushing rollers (19) abut against the top of the filter plate (21).

5. A coal sampler with an anti-clogging device according to claim 4, characterized in that: The second anti-clogging device includes a bidirectional lead screw (23), the second gear (12) is fixedly connected to the front end of the bidirectional lead screw (23), a servo motor (22) is installed on one side of the crushing chamber (10), the output shaft of the servo motor (22) is fixedly connected to the rear end of the bidirectional lead screw (23), a sliding groove (26) is fixedly connected to the inner wall of the crushing chamber (10), the bidirectional lead screw (23) is rotatably disposed inside the sliding groove (26), a sliding block (25) is threadedly connected to the bidirectional lead screw (23), the sliding block (25) is slidably connected to the sliding groove (26), a second cleaning scraper (24) is fixedly connected to one side of the sliding block (25), and the second cleaning scraper (24) abuts against the top of the filter plate (21).

6. A coal sampler with an anti-clogging device according to claim 5, characterized in that: The collection device includes a sampling box (6), a first conduit (8), a negative pressure pump (5), and a one-way valve (7). The sampling box (6) is fixedly connected to the left side of the sampler body (1). The one-way valve (7) and the negative pressure pump (5) are both installed on the right side of the sampling box (6). The two ends of the first conduit (8) are fixedly connected to the output port of the crushing chamber (10) and the input port of the one-way valve (7), respectively.

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