A geological exploration sample crushing and screening device

Abstract

The present invention belongs to the field of crushing technology, specifically a geological exploration sample crushing and screening device, including a sample crusher; the sample crusher includes a crushing bin and a screening bin; a barrel is installed on the top of the crushing bin; two opposite crushing rollers are provided in the crushing bin; a rectangular groove is provided at the bottom of the crushing bin; the two crushing rollers are provided with blocks on the opposite sides; a brush layer is provided on the outer ring surface of the block; the two opposite sides of the block are fixedly connected to electric push rods; an opening is provided on the screening bin; a collecting bin is slidably connected in the screening bin; mirror-set L-shaped plates are fixedly connected on both sides of the collecting bin; rollers are rotated on the top of the L-shaped plates; the present invention can avoid mixing with residual samples when other types of samples are processed again by setting a sample crusher, which leads to cross contamination.

Description

Technical Field

[0001] The invention belongs to the field of crushing technology, in particular to a geological exploration sample crushing and screening device. Background Art

[0002] Crushing equipment is a key tool for sample preparation after geological surveys. When field-collected rock and mineral samples arrive at the laboratory, their raw state often cannot directly meet the requirements of subsequent analysis and testing due to variations in particle size and hardness. This is where crushing equipment plays a crucial role. Through specific mechanical forces, it gradually breaks down large, irregular samples into a suitable particle size range, laying the foundation for subsequent sample preparation processes such as grinding and screening.

[0003] However, due to the complex internal structure of the crushing equipment, some sample will remain in the crushing equipment after the sample is crushed; when the next sample is processed, the residual sample will be mixed into the new sample, causing cross contamination.

[0004] Cross-contamination can have a serious negative impact on geological exploration. First, it can lead to distortion of analytical data, causing the chemical composition, mineral content and other analytical results of the sample to deviate from the actual values, thereby affecting geologists' judgment of important geological information such as ore grade and geological structure, and may lead to erroneous exploration conclusions and decisions. Secondly, cross-contamination can reduce the efficiency and reliability of geological exploration work, requiring the recollection and reanalysis of contaminated samples, increasing manpower, material and time costs. In addition, for some rare or difficult-to-obtain samples, cross-contamination may cause sample waste, affecting the normal development of scientific research and exploration work. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology and solve the above technical problems, the present invention proposes a geological exploration sample crushing and screening device. By setting up a sample crusher, it can avoid mixing with residual samples when processing other types of samples again, resulting in cross contamination. The specific structure is as follows:

[0006] A geological exploration sample crushing and screening device, comprising a sample crusher; the sample crusher comprises a crushing chamber and a screening chamber;

[0007] The crushing chamber is a rectangular chamber; a barrel is installed on the top of the crushing chamber; a barrel cover is provided on the barrel cover, and a first air inlet pipe is installed on the barrel cover;

[0008] Two opposing crushing rollers are provided in the crushing chamber, and the crushing rollers rotate on the crushing chamber via a rotating shaft and are driven by a first motor;

[0009] A rectangular groove is provided at the bottom of the crushing bin; the screening bin is installed at the bottom of the crushing bin and is connected to the rectangular groove;

[0010] The two crushing rollers are provided with blocks on opposite sides thereof, and the blocks are parallel to the crushing rollers; the surface of the block close to the crushing roller is an arc surface; the outer ring surface of the block is provided with a brush layer;

[0011] The two blocks are fixedly connected to an electric push rod on one side opposite to the other, and the other side of the electric push rod is fixedly mounted on the side walls of the crushing chamber;

[0012] The screening bin is provided with an opening; a collecting bin is slidably connected to the screening bin; a supporting leg is provided at the bottom of the collecting bin; a first air outlet pipe is installed in the collecting bin; and a partition is laid in the collecting bin;

[0013] Both sides of the collection bin are fixedly connected with mirror-image L-shaped plates; rollers are rotated on the tops of the L-shaped plates; rotating rods are rotated on the opposite sides of the two L-shaped plates, and the rotating rods are driven by a second motor; the same screen is wound on the two rotating rods, and the screen passes over the two rollers.

[0014] As a preferred embodiment of the present invention, the barrel is composed of a plurality of rotating plates; the end surfaces of adjacent rotating plates that are close to each other are semicircular surfaces and contact each other;

[0015] A round rod is fixedly connected to the interior of each rotating plate, and the round rods rotate on the top of the crushing bin; the top of each round rod is fixedly connected to the first gear;

[0016] The outer ring of the barrel is provided with a spacer; a circular groove is opened on the top of the spacer, and the barrel cover is inserted into the circular groove;

[0017] The round rods all pass through the spacer and extend to the top of the spacer, and the first gear is located on the upper surface of the spacer; the upper surface of the spacer is rotatably connected to a gear ring, and the inner and outer rings of the gear ring are both provided with gear teeth;

[0018] The first gear is located on the inner ring of the gear ring and meshes with the inner ring of the gear ring; a second gear rotates on the top of the spacer and meshes with the outer ring of the gear ring; the second gear is driven by a third motor;

[0019] A second air inlet pipe is installed on the top of the partition tube; and a second air outlet pipe is installed on the side of the partition tube at the bottom of the partition tube.

[0020] As a preferred embodiment of the present invention, a spiral sheet is fixed in the spacer, and the spiral sheet is not in contact with the barrel in the initial state;

[0021] The spiral piece is made of elastic rubber material.

[0022] As a preferred embodiment of the present invention, magnets are fixedly connected to the surfaces of the two stoppers;

[0023] The surface of the block is rotatably connected to a mesh belt, which is a metal mesh belt and is adsorbed on the surface of the block; the brush layer is evenly fixedly connected to the outer ring surface of the mesh belt; the width of the mesh belt is smaller than the length of the block, and the mesh belt is located between the two electric push rods;

[0024] The brush layer contacts the top and bottom of the inner cavity of the crushing bin;

[0025] Two driving rollers are rotatably connected in the stopper, and the driving rollers are driven by a fourth motor, and the fourth motor is installed inside the stopper.

[0026] As a preferred embodiment of the present invention, air grooves are provided in the blocks;

[0027] Two guide tubes are fixedly connected to opposite sides of the two stoppers, and the mesh belt is located between the two guide tubes; one side of the guide tube is connected to the air groove, and the other side passes through the crushing chamber and extends to the outside, and the guide tube is slidably connected to the crushing chamber;

[0028] The block is provided with a first air passage and a second air passage arranged evenly;

[0029] There is a gap between the two stoppers and the side walls of the crushing chamber, and the space between the stoppers and the side walls of the crushing chamber is a cleaning chamber; a third air inlet pipe is installed on the top of the cleaning chamber;

[0030] A third air outlet pipe is installed on each side wall of the crushing bin, and the third air outlet pipe is communicated with the cleaning chamber.

[0031] As a preferred embodiment of the present invention, two baffles are provided on both ends of the two crushing rollers, and the two baffles are fitted to each other;

[0032] The two baffles and the two stoppers are perpendicular to each other and fit together; two semicircular grooves are provided on the opposite ends of the two baffles, and the rotating shafts on the two crushing rollers pass through the opposite semicircular grooves and fit together with the semicircular grooves;

[0033] The two baffles pass through the top and bottom of the crushing bin on opposite sides and extend to the top and bottom of the crushing bin respectively; the baffles are slidably connected to the crushing bin;

[0034] The two baffles extend out of the top and bottom of the crushing bin respectively, and one side of each is fixedly connected to a driving block; the driving blocks are fixedly connected to a cylinder, and the other side of the cylinder is fixed to the surface of the crushing bin.

[0035] As a preferred embodiment of the present invention, the openings of the rectangular slots are all designed with rounded corners.

[0036] As a preferred embodiment of the present invention, the surface of the screen is fixedly connected with evenly arranged spacers, and the spacers are made of elastic rubber material.

[0037] As a preferred embodiment of the present invention, the L-shaped plate is provided with evenly arranged fourth air inlet pipes on the screening bin on the opposite side thereof; and a fourth air outlet pipe is provided below the fourth air inlet pipes.

[0038] The beneficial effects of the present invention are as follows:

[0039] 1. The geological exploration sample crushing and screening device described in the present invention can blow gas into the crushing chamber and the screening chamber to purge the crushing chamber, the crushing roller and the screening chamber, so that the residual samples in the crushing chamber and the screening chamber can be taken out. At the same time, the brush layer on the block can be used to clean the crushing roller, thereby further reducing the residual samples in the crushing chamber. At the same time, by replacing the screen for screening samples, the presence of samples on the screen can be avoided, so that when other types of samples are processed again, they will not be mixed with the residual samples, resulting in cross contamination, and causing distortion of analysis data, so that the analysis results such as the chemical composition and mineral content of the samples deviate from the actual values, thereby affecting the geologists' judgment on important geological information such as the grade of the ore deposit and the geological structure, and may lead to erroneous exploration conclusions and decisions.

[0040] 2. The geological exploration sample crushing and screening device described in the present invention, when the brush layer has completed cleaning the crushing roller and the block has returned to its initial state, the fourth motor is controlled to rotate, and the mesh belt will be driven by the driving roller to slowly rotate downward, and the mesh belt will be adsorbed on the surface of the block and rotate, and at the same time the mesh belt will drive the brush layer that cleans the crushing roller to rotate. When the brush layer that has cleaned the crushing roller rotates into the cleaning chamber, the mesh belt is controlled to stop rotating. At this time, the mesh belt and brush layer originally close to the side of the crushing roller will be rotated into the cleaning chamber, and the clean mesh belt and brush layer originally located in the cleaning chamber will be rotated to the side of the crushing roller, thereby avoiding the presence of sample impurities on the brush layer and mesh belt close to the side of the crushing roller. When the new sample is crushed again, the sample impurities on the mesh belt and brush layer will be mixed with the new sample impurities, thereby causing cross contamination.

[0041] 3. The geological exploration sample crushing and screening device described in the present invention can scrape off the sample impurities remaining on the surface of the baffles by scraping the baffles on both sides of the crushing roller, so as to avoid the sample impurities adhering to the surface of the baffles from mixing with the newly crushed samples when the next batch of samples are crushed, thereby preventing the newly crushed samples from being cross-contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below with reference to the accompanying drawings.

[0043] Figure 1 It is the overall structure diagram of the sample crusher of the present invention;

[0044] Figure 2 This is a structural diagram of the present invention after the crushing bin and screening bin are separated;

[0045] Figure 3 This is a diagram of the internal structure of the crushing bin in the present invention;

[0046] Figure 4 This is a structural diagram of the crushing chamber, baffles and baffles in the present invention;

[0047] Figure 5 It is a structural diagram of the barrel and the spacer in the present invention;

[0048] Figure 6 It is a structural diagram of the screening bin in the present invention;

[0049] Figure 7 It is a top view of the sample crusher of the present invention;

[0050] Figure 8 This invention Figure 7 Cross-sectional view at AA in the middle;

[0051] Figure 9 This invention Figure 8 A partial enlarged view of point B in the middle;

[0052] Figure 10 This invention Figure 7 Cross-sectional view at CC;

[0053] Figure 11 This invention Figure 10 A partial enlarged view of point D in the middle.

[0054] Figure: 1. Crushing chamber; 11. Crushing roller; 12. First motor; 13. Rectangular slot; 14. Stopper; 15. Brush layer; 16. Electric push rod; 2. Screening chamber; 21. Collection chamber; 22. Support leg; 23. First air outlet pipe; 24. L-shaped plate; 241. Rotating roller; 25. Rotating rod; 26. Second motor; 27. Screen; 28. Spacer; 29. Fourth air inlet pipe; 291. Fourth air outlet pipe; 3. Barrel; 31. Rotating plate; 32. First gear; 33 , partition; 331, second air inlet pipe; 332, second air outlet pipe; 34, cylinder cover; 35, first air inlet pipe; 36, gear ring; 37, second gear; 38, third motor; 39, spiral sheet; 4, mesh belt; 41, drive roller; 411, fourth motor; 42, air groove; 43, conduit; 44, first air duct; 45, second air duct; 46, third air inlet pipe; 47, third air outlet pipe; 5, baffle; 51, semicircular groove; 52, drive block; 53, cylinder. DETAILED DESCRIPTION

[0055] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0056] like Figures 1 to 11 As shown, a geological exploration sample crushing and screening device according to the present invention, as an embodiment of the present invention, comprises a sample crusher; the sample crusher comprises a crushing chamber 1 and a screening chamber 2;

[0057] The crushing chamber 1 is a rectangular chamber; a barrel 3 is installed on the top of the crushing chamber 1; a barrel cover 34 is provided on the barrel 3, and a first air inlet pipe 35 is installed on the barrel cover 34;

[0058] Two opposing crushing rollers 11 are provided in the crushing chamber 1, and the crushing rollers 11 rotate on the crushing chamber 1 via a rotating shaft and are driven by a first motor 12;

[0059] A rectangular groove 13 is provided at the bottom of the crushing bin 1; the screening bin 2 is installed at the bottom of the crushing bin 1 and is connected to the rectangular groove 13;

[0060] The two crushing rollers 11 are provided with a stopper 14 on the opposite side thereof, and the stopper 14 is parallel to the crushing roller 11; the surface of the stopper 14 close to the crushing roller 11 is an arc surface; the outer surface of the stopper 14 is provided with a brush layer 15;

[0061] The two blocks 14 are fixedly connected to the opposite sides of the electric push rod 16, and the other side of the electric push rod 16 is fixedly installed on the side walls of the crushing chamber 1;

[0062] The screening bin 2 has an opening; a collecting bin 21 is slidably connected to the screening bin 2; a support leg 22 is provided at the bottom of the collecting bin 21; a first air outlet pipe 23 is installed in the collecting bin 21; and a partition is laid in the collecting bin 21;

[0063] Mirror-image L-shaped plates 24 are fixedly connected to both sides of the collection bin 21; rollers 241 rotate on top of the L-shaped plates 24; rotating rods 25 rotate on opposite sides of the two L-shaped plates 24, and the rotating rods 25 are driven by a second motor 26; a screen 27 is wound around the two rotating rods 25, and the screen 27 passes over the two rollers 241;

[0064] When the sample is crushed, the sample crusher is started, and the first motor 12 drives the two crushing rollers 11 to rotate relative to each other, while controlling the two second motors 26 to rotate forward and reverse. When the two second motors 26 rotate forward, the rotating rod 25 on the left releases the screen 27, and the rotating rod 25 on the right winds up the screen 27, so that the screen 27 moves to the right along the roller 241. When the two second motors 26 reverse, the rotating rod 25 on the right releases the screen 27, and the rotating rod 25 on the left winds up the screen 27, so that the screen 27 moves to the left along the roller 241. By controlling the second motor 26 to cycle forward and reverse, the screen 27 can be moved back and forth left and right, and then the sample is placed in the barrel 3. The sample in the barrel 3 will move downward and contact with the rotating crushing roller 11. The rotating crushing roller 11 will gradually crush the falling sample. As more samples are crushed, the sample in the barrel 3 gradually decreases until all samples are crushed.

[0065] When the sample is gradually crushed, the crushed sample will fall onto the sieve 27 that moves back and forth. The sieve 27 can screen the crushed sample. The screened sample will fall onto the partition in the collection chamber 21. When the crushing is completed, the collection chamber 21 is taken out and the sample is collected. The collected sample can then be tested.

[0066] Then put the collecting bin 21 into the screening bin 2, and take out the partition in the collecting bin 21, then connect the external air source with the first air inlet pipe 35, and connect the first air outlet pipe 23 with the external vacuum cleaner, and then continue to control the first motor 12 and the second motor 26 to work. When the gas blows downward from the barrel 3, it can sweep the surface of the barrel 3, thereby driving the sample adhering to the barrel 3. When the gas passes through the rotating crushing roller 11, it can sweep the crushing roller 11, thereby taking away the sample remaining on the crushing roller 11. When the gas screens the screen 27, the passing gas can also take away the sample remaining on the screen 27. Then the sample will be extracted through the first air outlet pipe 23 along with the gas, thereby reducing the amount of residual sample in the sample crusher.

[0067] When the gas is blowing on the crushing roller 11, the electric push rod 16 is controlled to extend, and the extended electric push rod 16 will push the stopper 14 to move, and the moving stopper 14 will move to the side of the crushing roller 11. At the same time, the stopper 14 will drive the brush layer 15 to gradually contact the rotating crushing roller 11, so that the brush layer 15 can clean the crushing roller 11, thereby removing the residual sample on the crushing roller 11. At the same time, with the flow of gas, the sample can fall downward with the gas and then be discharged by the first air outlet pipe 23. If some samples cannot pass through the screen 27, the two second motors 26 are controlled to drive the two rotating rods 25 to rotate clockwise. At this time, the rotating rod 25 on the left will release the screen 27. The rotating rod 25 on the right will wind up the screen 27, thereby moving the screen 27 to the right and taking away the sample on the screen 27. When the sample is brought into the right L-shaped plate 24, the sample will fall into the L-shaped plate 24. At the same time, the filter that has screened the sample rotates into the L-shaped plate 24, and the filter that has not screened the sample is replaced under the crushing roller 11. When the crushing roller 11 is cleaned, the electric push rod 16 is controlled to restore to its initial state, thereby driving the block 14 and the brush layer 15 away from the crushing roller 11 and restoring to their initial state. Since the collecting bin 21 can be taken out from the screening bin 2, the collecting bin 21 can be cleaned manually, and then the partition layer can be laid in the collecting bin 21.

[0068] During this process, by introducing gas into the crushing chamber 1 and the screening chamber 2, the crushing chamber 1, the crushing roller 11 and the screening chamber 2 can be purged, so that the residual samples in the crushing chamber 1 and the screening chamber 2 can be taken out, and at the same time, the brush layer 15 on the block 14 can be used to clean the crushing roller 11, thereby further reducing the residual samples in the crushing chamber 1. At the same time, by replacing the screen 27 for screening samples, the presence of samples on the screen 27 can be avoided, so that when other types of samples are processed again, they will not be mixed with the residual samples, resulting in cross contamination, and causing distortion of the analysis data, so that the analysis results such as the chemical composition and mineral content of the samples deviate from the actual values, thereby affecting the geologists' judgment on important geological information such as the grade of the ore deposit and the geological structure, and may lead to erroneous exploration conclusions and decisions.

[0069] As an embodiment of the present invention, the barrel 3 is composed of a plurality of rotating plates 31; the end surfaces of adjacent rotating plates 31 that are close to each other are semicircular surfaces and contact each other;

[0070] A round rod is fixedly connected to the interior of each rotating plate 31, and the round rods rotate on the top of the crushing chamber 1; the top of each round rod is fixedly connected to the first gear 32;

[0071] The outer ring of the barrel 3 is provided with a spacer 33; a circular groove is opened on the top of the spacer 33, and the barrel cover 34 is inserted into the circular groove;

[0072] The round rods all pass through the spacer 33 and extend to the top of the spacer 33, and the first gear 32 is located on the upper surface of the spacer 33; the upper surface of the spacer 33 is rotatably connected to a gear ring 36, and the inner and outer rings of the gear ring 36 are provided with gear teeth;

[0073] The first gear 32 is located on the inner ring of the gear ring 36 and meshes with the inner ring of the gear ring 36; a second gear 37 rotates on the top of the spacer 33 and meshes with the outer ring of the gear ring 36; the second gear 37 is driven by a third motor 38;

[0074] A second air inlet pipe 331 is installed on the top of the partition 33; a second air outlet pipe 332 is installed on the bottom of the partition 33 and on the side of the partition 33;

[0075] A spiral piece 39 is fixed in the spacer 33 , and the spiral piece 39 is not in contact with the barrel 3 in the initial state; the spiral piece 39 is made of elastic rubber material.

[0076] When other types of samples need to be processed, the third motor 38 is controlled to rotate, thereby driving the second gear 37 to rotate. The rotating second gear 37 will drive the gear ring 36 to rotate. Since the first gear 32 is engaged with the inner ring of the gear ring 36, it will drive all the first gears 32 to rotate. The rotating first gear 32 will drive the rotating plate 31 to rotate through the round rod. When the rotating plate 31 rotates one hundred and eighty degrees, the rotating plate 31 will change its surface and rotate the surface that was originally in contact with the previous batch of samples to the inside of the partition cylinder 33, and the clean side surface of the rotating plate 31 will be in contact with the sample to be crushed, so as to avoid residual samples on the original surface of the rotating plate 31, causing this part of the sample to adhere to the new sample, thereby causing cross contamination.

[0077] Furthermore, by introducing gas into the second air inlet pipe 331 and connecting the second air outlet pipe 332 with an external vacuum cleaner, the gas entering the partition cylinder 33 will flow in a spiral along the spiral piece 39, and the flowing gas will flow along the outer ring of the barrel 3, thereby blowing off the sample impurities adhered to the outer ring of the barrel 3 and flowing with the gas. When the gas flows to the bottom of the partition cylinder 33, it will be extracted through the second air outlet pipe 332. In this process, the side of the turn plate 31 where the sample was originally adhered can be cleaned without affecting the crushing work. After the surface of the turn plate 31 where the sample was adhered is cleaned, when the next batch of samples is crushed, the above operation can be repeated. At the same time, since the spiral piece 39 is made of elastic rubber material, when the turn plate 31 rotates, it will squeeze the spiral piece 39, and the spiral piece 39 will be deformed, so it will not hinder the rotation process of the turn plate 31.

[0078] As an embodiment of the present invention, magnets are fixedly connected to the surfaces of the two blocks 14; a mesh belt 4 is rotatably connected to the surface of the block 14, and the mesh belt 4 is a metal mesh belt and is adsorbed on the surface of the block 14; the brush layer 15 is evenly fixedly connected to the outer ring surface of the mesh belt 4; the width of the mesh belt 4 is smaller than the length of the block 14, and the mesh belt 4 is located between the two electric push rods 16; the brush layer 15 is in contact with the top and bottom of the inner cavity of the crushing chamber 1.

[0079] Two driving rollers 41 are rotatably connected in the stopper 14 , and the driving rollers 41 are driven by a fourth motor 411 , and the fourth motor 411 is installed inside the stopper 14 ; an air groove 42 is opened in each of the stoppers 14 .

[0080] Two conduits 43 are fixedly connected to opposite sides of the two stoppers 14, and the mesh belt 4 is located between the two conduits 43; one side of the conduit 43 is connected to the air groove 42, and the other side passes through the crushing chamber 1 and extends to the outside, and the conduit 43 is slidably connected to the crushing chamber 1;

[0081] The block 14 is provided with uniformly arranged first air passages 44 and second air passages 45;

[0082] There is a gap between the two stoppers 14 and the side wall of the crushing chamber 1, and the space between the stoppers 14 and the side wall of the crushing chamber 1 is a cleaning chamber; a third air inlet pipe 46 is installed on the top of the cleaning chamber;

[0083] A third air outlet pipe 47 is installed on the side wall of the crushing chamber 1, and the third air outlet pipe 47 is connected to the cleaning chamber.

[0084] When the brush layer 15 has finished cleaning the crushing roller 11 and the block 14 has returned to its initial state, the fourth motor 411 is controlled to rotate, and the mesh belt 4 will be driven by the driving roller 41 to rotate slowly downward. The mesh belt 4 will be adsorbed on the surface of the block 14 and rotate. At the same time, the mesh belt 4 will drive the brush layer 15 that cleans the crushing roller 11 to rotate. When the brush layer 15 that has cleaned the crushing roller 11 rotates into the cleaning chamber, the mesh belt 4 is controlled to stop rotating. At this time, the mesh belt 4 and the brush layer 15 that were originally close to the side of the crushing roller 11 will be rotated into the cleaning chamber, and the clean mesh belt 4 and the brush layer 15 that were originally located in the cleaning chamber will be rotated to the side of the crushing roller 11, thereby avoiding the presence of sample impurities on the brush layer 15 and mesh belt 4 close to the side of the crushing roller 11. When the new sample is crushed again, the sample impurities on the mesh belt 4 and the brush layer 15 will be mixed with the new sample impurities, thereby causing cross contamination.

[0085] After the brush layer 15 of the crushing roller 11 is cleaned and rotates into the cleaning chamber, gas is introduced into the third air inlet pipe 46, and the third air outlet pipe 47 is extracted by a vacuum cleaner. The outflowing gas will clean the surface of the mesh belt 4 and the brush layer 15, thereby removing the sample impurities remaining on the mesh belt 4 and the brush layer 15. When the mesh belt 4 and the brush layer 15 in the cleaning chamber are cleaned, if the next batch of samples needs to be crushed, the above operation can be repeated.

[0086] Since an air groove 42 is provided in the block 14, when the crushing roller 11 is cleaned, gas is introduced into the conduit 43, the gas will enter the air groove 42, and then be ejected through the first air channel 44. The gas ejected from the first air channel 44 will act on the crushing roller 11, so that the crushing roller 11 can be further purged, thereby improving the cleaning effect of the crushing roller 11. When the gas ejected from the third air inlet pipe 46 cleans the mesh belt 4 and the brush layer 15 located in the cleaning chamber, the gas in the air groove 42 will also be ejected from the second air channel 45, and the ejected gas will act on the mesh belt 4, thereby cleaning the mesh belt 4 and the brush layer 15 from the inside of the mesh belt 4, further improving the cleaning effect of the mesh belt 4 and the brush layer 15, and preparing for next use.

[0087] As an embodiment of the present invention, two baffles 5 are provided on both sides of the two crushing rollers 11, and the two baffles 5 are in contact with each other; the two baffles 5 and the two stoppers 14 are perpendicular to each other and in contact with each other; two semicircular grooves 51 are provided on the opposite ends of the two baffles 5, and the rotating shafts on the two crushing rollers 11 pass through the opposite semicircular grooves 51 and are in contact with each other;

[0088] The two baffles 5 pass through the top and bottom of the crushing chamber 1 on opposite sides, and extend to the top and bottom of the crushing chamber 1 respectively; the baffles 5 are slidably connected to the crushing chamber 1;

[0089] The two baffles 5 extend out of the top and bottom of the crushing chamber 1 respectively, and are fixedly connected to a driving block 52 on one side; a cylinder 53 is fixedly connected to the driving block 52, and the other side of the cylinder 53 is fixed to the surface of the crushing chamber 1; the openings of the rectangular grooves 13 are all rounded.

[0090] In the process of cleaning the crushing roller 11 by using the brush layer 15, the gas flowing out of the first air inlet pipe 35 will continue to flow from top to bottom, controlling the cylinder 53 connected to the driving block 52 to gradually extend, thereby driving the driving block 52 to move, and the moving driving block 52 will drive the upper and lower blocks 14 that are in contact with each other to move away from each other, and make the block 14 gradually extend out of the crushing chamber 1. In the process of the block 14 extending, the crushing chamber 1 will scrape the surface of the block 14, so that the sample impurities adhered to the surface of the block 14 can be gradually pushed off, and the pushed-off sample impurities will be taken away by the flowing gas. When the block 14 is completely After all of them extend out from the crushing chamber 1, the crushing chamber 1 scrapes the entire surface of the block 14, thereby removing the sample impurities remaining on the surface of the baffle 5. Due to the rounded design of the opening of the rectangular groove 13, the sample impurities that fall to the opening position of the rectangular groove 13 will slide downward and move downward under the blowing of the gas. When the crushing roller 11 is cleaned, the control cylinder 53 is restored to its initial state. The cylinder 53 that has restored to its initial state will drive the baffle 5 to gradually restore its initial state through the driving block 52, and finally make the upper and lower baffles 5 fit each other, and make the semicircular groove 51 fit the rotating shaft on the crushing roller 11;

[0091] During this process, by scraping the baffles 5 on both sides of the crushing roller 11, the sample impurities remaining on the surface of the baffles 5 can be scraped off, avoiding the sample impurities adhering to the surface of the baffles 5 from mixing with the newly crushed samples when the next batch of samples are crushed, thereby preventing the newly crushed samples from being cross-contaminated.

[0092] As an embodiment of the present invention; the surface of the screen 27 is fixedly connected with evenly arranged spacers 28, and the spacers 28 are made of elastic rubber material; the opposite side of the L-shaped plate 24 is provided with evenly arranged fourth air inlet pipes 29 located on the screening bin 2; and a fourth air outlet pipe 291 is provided below the fourth air inlet pipe 29.

[0093] Since the screen 27 is fixedly connected with evenly arranged spacers 28, when the screen 27 rotates toward the inside of the right L-shaped plate 24, the spacers 28 can push the sample to move, thereby preventing the sample from rolling on the screen 27, causing the rolled sample to always remain on the screen 27 below the crushing roller 11;

[0094] When the screen 27 originally located below the crushing roller 11 rotates to the inside of the L-shaped plate 24 on the right, gas is introduced into the fourth air inlet pipe 29, and the fourth air outlet pipe 291 is sucked by a vacuum cleaner, so that the sample that falls into the L-shaped plate 24 can be extracted. At the same time, the gas flowing out through the fourth air inlet pipe 29 can blow the replaced screen 27 between the roller 241 and the rotating rod 25, and then the blown-off sample will be discharged from the fourth air inlet pipe 29. During this process, the replaced screen 27 can be cleaned to blow off the sample remaining on the screen 27, to avoid the screen 27 being wound on the rotating rod 25. If there is a sample, the sample will squeeze the screen 27 under the winding pressure, causing holes, tears or local deformation in the screen 27.

[0095] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0096] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A geological exploration sample crushing and screening device, characterized by: It comprises a sample crusher; the sample crusher comprises a crushing chamber (1) and a screening chamber (2); A material barrel (3) is installed on the top of the crushing bin (1); a barrel cover (34) is provided on the material barrel (3), and a first air inlet pipe (35) is installed on the barrel cover (34); Two opposing crushing rollers (11) are provided in the crushing chamber (1), and the crushing rollers (11) rotate on the crushing chamber (1) via a rotating shaft and are driven by a first motor (12); The bottom of the crushing bin (1) is provided with a rectangular groove (13); the screening bin (2) is installed at the bottom of the crushing bin (1); A stopper (14) is provided on the opposite side of the two crushing rollers (11), and the stopper (14) is parallel to the crushing roller (11); the surface of the stopper (14) close to the crushing roller (11) is an arc surface; and a brush layer (15) is provided on the outer ring surface of the stopper (14); The two blocks (14) are fixedly connected to electric push rods (16) on opposite sides, and the other sides of the electric push rods (16) are fixedly mounted on the side walls of the crushing chamber (1); A collecting bin (21) is slidably connected to the screening bin (2); a supporting leg (22) is provided at the bottom of the collecting bin (21); a first air outlet pipe (23) is installed in the collecting bin (21); and a partition is laid in the collecting bin (21); Both sides of the collecting bin (21) are fixedly connected to L-shaped plates (24) arranged in a mirror image; a roller (241) is rotated on the top of each of the L-shaped plates (24); a rotating rod (25) is rotated on the opposite sides of the two L-shaped plates (24), and the rotating rod (25) is driven by a second motor (26); a same screen (27) is wound around the two rotating rods (25), and the screen (27) passes over the two rotating rollers (241); The barrel (3) is composed of a plurality of rotating plates (31); the end surfaces of adjacent rotating plates (31) that are close to each other are semicircular surfaces and contact each other; A round rod is fixedly connected to the interior of each rotating plate (31), and the round rods rotate on the top of the crushing bin (1); the top of each round rod is fixedly connected to the first gear (32); The outer ring of the barrel (3) is provided with a spacer (33); a circular groove is opened on the top of the spacer (33), and the barrel cover (34) is inserted into the circular groove; The round rods all pass through the spacer (33) and extend to the top of the spacer (33). The first gear (32) is located on the upper surface of the spacer (33). The upper surface of the spacer (33) is rotatably connected to a gear ring (36). The inner and outer rings of the gear ring (36) are both provided with gear teeth. The first gear (32) is located on the inner ring of the gear ring (36) and meshes with the inner ring of the gear ring (36); a second gear (37) is rotated on the top of the spacer (33) and meshes with the outer ring of the gear ring (36); the second gear (37) is driven by a third motor (38); A second air inlet pipe (331) is installed on the top of the partition cylinder (33); and a second air outlet pipe (332) is installed on the bottom of the partition cylinder (33) and located on the side of the partition cylinder (33).

2. The geological exploration sample crushing and screening device according to claim 1, characterized in that: A spiral piece (39) is fixed in the spacer (33), and the spiral piece (39) is not in contact with the barrel (3) in the initial state; The spiral piece (39) is made of elastic rubber material.

3. The geological exploration sample crushing and screening device according to claim 1, characterized in that: The surfaces of the two stoppers (14) are both fixedly connected with magnets; The surface of the stopper (14) is rotatably connected to a mesh belt (4) and is adsorbed on the surface of the stopper (14); the brush layer (15) is evenly fixedly connected to the outer ring surface of the mesh belt (4); the width of the mesh belt (4) is smaller than the length of the stopper (14), and the mesh belt (4) is located between two electric push rods (16); The brush layer (15) contacts the top and bottom of the inner cavity of the crushing chamber (1); Two driving rollers (41) are rotatably connected inside the stopper (14), and the driving rollers (41) are driven by a fourth motor (411). The fourth motor (411) is installed inside the stopper (14).

4. The geological exploration sample crushing and screening device according to claim 3, characterized in that: Each of the stoppers (14) is provided with an air groove (42); Two guide tubes (43) are fixedly connected to opposite sides of the two stoppers (14), and the mesh belt (4) is located between the two guide tubes (43); one side of the guide tube (43) is connected to the air groove (42), and the other side passes through the crushing chamber (1) and extends to the outside, and the guide tube (43) is slidably connected to the crushing chamber (1); The block (14) is provided with a first air passage (44) and a second air passage (45) which are evenly arranged; A distance is left between the two stoppers (14) and the side wall of the crushing chamber (1), and the space between the stoppers (14) and the side wall of the crushing chamber (1) is a cleaning chamber; a third air inlet pipe (46) is installed on the top of the cleaning chamber; A third air outlet pipe (47) is installed on the side wall of the crushing bin (1), and the third air outlet pipe (47) is communicated with the cleaning chamber.

5. The geological exploration sample crushing and screening device according to claim 1, characterized in that: Two baffles (5) are provided on both side ends of the two crushing rollers (11), and the two baffles (5) are fitted to each other; The two baffles (5) and the two stoppers (14) are perpendicular to each other and fit together; two semicircular grooves (51) are provided on the opposite end portions of the two baffles (5), and the rotating shafts on the two crushing rollers (11) pass through the opposite semicircular grooves (51) and fit together with the semicircular grooves (51); The two baffles (5) pass through the top and bottom of the crushing bin (1) on opposite sides, and extend to the top and bottom of the crushing bin (1) respectively; the baffles (5) are slidably connected to the crushing bin (1); The two baffles (5) extend out of the top and bottom of the crushing chamber (1) respectively, and are fixedly connected to a driving block (52) on one side; the driving block (52) is fixedly connected to a cylinder (53), and the other side of the cylinder (53) is fixed to the surface of the crushing chamber (1).

6. The geological exploration sample crushing and screening device according to claim 1, characterized in that: The openings of the rectangular grooves (13) are all designed with rounded corners.

7. The geological exploration sample crushing and screening device according to claim 1, characterized in that: The surface of the screen (27) is fixedly connected with evenly arranged spacers (28), and the spacers (28) are made of elastic rubber material.

8. The geological exploration sample crushing and screening device according to claim 1, characterized in that: On the opposite side of the L-shaped plate (24), evenly arranged fourth air inlet pipes (29) are installed on the screening bin (2); and below the fourth air inlet pipes (29) are fourth air outlet pipes (291).

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