Geological exploration sample crushing and screening device

Abstract

The invention belongs to the technical field of crushing, and particularly relates to a geological exploration sample crushing and screening device which comprises a sample crusher. The sample crusher comprises a crushing bin and a screening bin; a charging barrel is mounted at the top of the crushing bin; two opposite crushing rollers are arranged in the crushing bin; a rectangular groove is formed in the bottom of the crushing bin; stop blocks are arranged on the opposite sides of the two crushing rollers; a brush layer is arranged on the outer ring surface of the stop block; the opposite sides of the two check blocks are fixedly connected with electric push rods. An opening is formed in the screening bin; a collecting bin is slidably connected into the screening bin. L-shaped plates arranged in a mirror image mode are fixedly connected to the two sides of the collecting bin. Rotating rollers are rotationally arranged at the tops of the L-shaped plates; by arranging the sample crusher, the situation that when other types of samples are treated again, the samples are mixed with residual samples, and cross contamination is caused can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of crushing, and specifically relates to a crushing and screening device for geological exploration samples. Background Art

[0002] In the sample preparation process after geological exploration sampling, the crushing equipment is a key tool for sample pretreatment. When samples such as rock and ore collected in the field are delivered to the laboratory, their original states often cannot directly meet the requirements of subsequent analysis and testing due to differences in particle size, hardness, etc. At this time, the crushing equipment plays an important role. It gradually crushes large and irregular samples to a suitable particle size range through specific mechanical forces, laying a foundation for subsequent sample preparation processes such as grinding and screening.

[0003] However, due to the complex internal structure of the crushing equipment, after the sample crushing is completed, there will be some residual samples in the crushing equipment; when processing the next sample, the residual samples will be mixed into the new sample, resulting in cross-contamination.

[0004] Cross-contamination will bring serious negative impacts to geological exploration work. First of all, it will cause the analysis data to be distorted, making the analysis results of the chemical composition, mineral content, etc. of the sample deviate from the actual value, thus affecting the judgment of important geological information such as the grade of the ore deposit and geological structure by geological personnel, and may lead to incorrect exploration conclusions and decisions. Secondly, cross-contamination will reduce the efficiency and reliability of geological exploration work. It is necessary to re-collect and analyze the contaminated samples, increasing the human, material and time costs. In addition, for some rare or difficult-to-obtain samples, cross-contamination may cause waste of samples, affecting the normal development of scientific research and exploration work. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the above technical problems, the present invention proposes a crushing and screening device for geological exploration samples. By setting a sample crusher, it is possible to avoid the situation of cross-contamination caused by mixing with residual samples when processing other types of samples again; the specific structure is as follows; A crushing and screening device for geological exploration samples includes a sample crusher; the sample crusher includes a crushing chamber and a screening chamber; The crushing chamber is a rectangular chamber; a feed cylinder is installed at the top of the crushing chamber; a cylinder cover is provided on the feed cylinder, and a first air inlet pipe is installed on the cylinder cover; Two opposite crushing rollers are provided in the crushing chamber, and the crushing rollers rotate on the crushing chamber through a rotating shaft and are driven by a first motor; A rectangular groove is opened at the bottom of the crushing chamber; the screening chamber is installed at the bottom of the crushing chamber and is communicated with the rectangular groove; On the opposite sides of the two crushing rollers, there are blocking blocks, and the blocking blocks are parallel to the crushing rollers; the surface of the blocking block close to the crushing roller is an arc surface; a brush layer is arranged on the outer circumferential surface of the blocking block; On the opposite sides of the two blocking blocks, electric push rods are fixedly connected, and the other sides of the electric push rods are fixedly installed on the side walls of both sides of the crushing bin; An opening is formed in the screening bin; a collecting bin is slidably connected in the screening bin; legs are arranged at the bottom of the collecting bin; a first air outlet pipe is installed in the collecting bin; a partition layer is laid in the collecting bin; On both sides of the collecting bin, L-shaped plates arranged in a mirror image are fixedly connected; rollers are rotated at the tops of the L-shaped plates; on the opposite sides of the two L-shaped plates, rotating rods are rotated, and the rotating rods are driven by a second motor; the same screen is wound around the two rotating rods, and the screen bypasses the two rollers.

[0006] As a preferred mode of the present invention, the material cylinder is composed of a plurality of rotating plates; the end faces of the adjacent rotating plates close to each other are semi-circular surfaces and are in contact with each other; A round rod is fixedly connected inside each rotating plate, and the round rods are all rotated on the top of the crushing bin; a first gear is fixedly connected to the top of each round rod; A separating cylinder is arranged on the outer circumference of the material cylinder; a circular groove is formed at the top of the separating cylinder, and a cylinder cover is inserted into the circular groove; The round rods all pass through the separating cylinder and extend above the separating cylinder, and the first gears are located on the upper surface of the separating cylinder; a toothed ring is rotatably connected to the upper surface of the separating cylinder, and teeth are provided on both the inner and outer circumferences of the toothed ring; The first gears are located inside the toothed ring and are meshed with the inner circumference of the toothed ring; a second gear is rotated on the top of the separating cylinder and is meshed with the outer circumference of the toothed ring; the second gear is driven by a third motor; A second air inlet pipe is installed on the top of the separating cylinder; a second air outlet pipe is installed at the bottom of the separating cylinder on the side of the separating cylinder.

[0007] As a preferred mode of the present invention, a spiral sheet is fixed inside the separating cylinder, and the spiral sheet is not in contact with the material cylinder in the initial state; The spiral sheet is made of an elastic rubber material.

[0008] As a preferred mode of the present invention, magnets are fixedly connected to the surfaces of the two blocking blocks; A wire mesh belt is rotatably connected to the surface of the blocking block, and the wire mesh belt is a metal wire mesh belt and is adsorbed on the surface of the blocking block; the brush layer is uniformly fixedly connected to the outer circumferential surface of the wire mesh belt; the width of the wire mesh belt is smaller than the length of the blocking block, and the wire mesh belt is located between the two electric push rods; The brush layer is in contact with the top and bottom of the inner cavity of the crushing bin; Two driving rollers are rotatably connected inside the stopper, and the driving rollers are driven by a fourth motor, and the fourth motor is installed inside the stopper.

[0009] As a preferred embodiment of the present invention, air grooves are provided inside the stoppers; Two conduits are fixedly connected to the opposite sides of the two stoppers, and the mesh belt is located between the two conduits; one side of the conduit is communicated with the air groove, and the other side passes through the crushing chamber and extends to the outside, and the conduit is slidably connected to the crushing chamber; Uniformly arranged first air ducts and second air ducts are provided inside the stoppers; A gap is left between the two stoppers and the side wall of the crushing chamber, and the space between the stopper and the side wall of the crushing chamber is a cleaning chamber; a third air inlet pipe is installed at the top of the cleaning chamber; Third air outlet pipes are installed on the side walls of the crushing chamber, and the third air outlet pipes are communicated with the cleaning chamber.

[0010] As a preferred embodiment of the present invention, two baffles are arranged up and down at both ends of the two crushing rollers, and the two baffles are attached to each other; The two baffles are perpendicular to the two stoppers and are attached to each other; two semi-circular grooves are provided at the ends of the opposite sides of the two baffles, and the rotating shafts on the two crushing rollers pass through the opposite semi-circular grooves and are attached to the semi-circular grooves; The opposite sides of the two baffles pass through the top and bottom of the crushing chamber respectively and extend to the top and bottom of the crushing chamber; the baffle is slidably connected to the crushing chamber; Drive blocks are fixedly connected to the sides of the two baffles extending out of the top and bottom of the crushing chamber respectively; cylinders are fixedly connected to the drive blocks, and the other sides of the cylinders are fixed on the surface of the crushing chamber.

[0011] As a preferred embodiment of the present invention, the openings of the rectangular grooves are designed with rounded corners.

[0012] As a preferred embodiment of the present invention, evenly arranged partition strips are fixedly connected to the surface of the sieve mesh, and the partition strips are made of elastic rubber material.

[0013] As a preferred embodiment of the present invention, uniformly arranged fourth air inlet pipes are installed on the sieve separation chamber on the opposite sides of the L-shaped plates; fourth air outlet pipes are installed below the fourth air inlet pipes.

[0014] The beneficial effects of the present invention are as follows: 1. A geological exploration sample crushing and screening device according to the present invention can purge the crushing chamber, the crushing rollers, and the screening chamber by introducing gas into the crushing chamber and the screening chamber, so as to carry out the residual samples in the crushing chamber and the screening chamber. At the same time, in cooperation with the brush layer on the baffle, the crushing rollers can be cleaned, further reducing the residual samples in the crushing chamber. At the same time, by replacing the sieve mesh for screening samples, it is possible to avoid the presence of samples on the sieve mesh, thus avoiding the situation of cross-contamination when processing other types of samples again, which may lead to the mixing of residual samples, resulting in distorted analysis data, causing the analysis results of the chemical composition, mineral content, etc. of the samples to deviate from the actual values, thus affecting the judgment of important geological information such as the grade of the ore deposit and the geological structure by geological personnel, and may lead to incorrect exploration conclusions and decisions.

[0015] 2. A geological exploration sample crushing and screening device according to the present invention, when the brush layer finishes cleaning the crushing rollers and the baffle returns to its initial state, control the fourth motor to rotate, which will drive the mesh belt to rotate slowly downward through the driving roller. The mesh belt will adsorb on the surface of the baffle and rotate, and at the same time, the mesh belt will drive the brush layer for cleaning the crushing rollers to rotate. When the brush layer that has cleaned the crushing rollers rotates into the cleaning chamber, control the mesh belt to stop rotating. At this time, the mesh belt and the brush layer originally close to the crushing roller side will be rotated into the cleaning chamber, and the clean mesh belt and brush layer originally in the cleaning chamber will be rotated to the crushing roller side, thus avoiding the presence of sample impurities on the brush layer and the mesh belt close to the crushing roller side. When crushing new samples again, the sample impurities on the mesh belt and the brush layer will be mixed with the new sample impurities, thus forming a situation of cross-contamination.

[0016] 3. A geological exploration sample crushing and screening device according to the present invention can scrape off the residual sample impurities on the surface of the baffle by scraping the baffles on both sides of the crushing rollers, avoiding the mixing of the sample impurities adhered to the surface of the baffle with the newly crushed samples when crushing the next batch of samples, thus causing cross-contamination of the newly crushed samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is the overall structure diagram of the sample crusher of the present invention; Figure 2 is the structure diagram after the separation of the crushing chamber and the screening chamber in the present invention; Figure 3 is the internal structure diagram of the crushing chamber in the present invention; Figure 4 is the structure diagram of the crushing chamber, the baffle, and the baffle plate in the present invention; Figure 5 is the structure diagram of the material cylinder and the partition cylinder in the present invention; Figure 6 is the structural diagram of the screening bin in the present invention; Figure 7 is the top view of the sample crusher of the present invention; Figure 8 is the present invention Figure 7 the cross-sectional view at A-A in; Figure 9 is the present invention Figure 8 the partial enlarged view at B in; Figure 10 is the present invention Figure 7 the cross-sectional view at C-C in; Figure 11 is the present invention Figure 10 the partial enlarged view at D in.

[0019] In the figure: 1, crushing bin; 11, crushing roller; 12, first motor; 13, rectangular groove; 14, block; 15, brush layer; 16, electric push rod; 2, screening bin; 21, collection bin; 22, support leg; 23, first air outlet pipe; 24, L-shaped plate; 241, rotating roller; 25, rotating rod; 26, second motor; 27, sieve mesh; 28, partition strip; 29, fourth air inlet pipe; 291, fourth air outlet pipe; 3, material cylinder; 31, rotating plate; 32, first gear; 33, partition cylinder; 331, second air inlet pipe; 332, second air outlet pipe; 34, cylinder cover; 35, first air inlet pipe; 36, tooth ring; 37, second gear; 38, third motor; 39, spiral blade; 4, mesh belt; 41, driving 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, semi-circular groove; 52, driving block; 53, air cylinder. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0021] As Figures 1 to 11 shown, a geological exploration sample crushing and screening device described in the present invention, as an embodiment of the present invention; includes a sample crusher; the sample crusher includes a crushing bin 1 and a screening bin 2; The crushing bin 1 is a rectangular bin; a material cylinder 3 is installed on the top of the crushing bin 1; a cylinder cover 34 is provided on the material cylinder 3, and a first air inlet pipe 35 is installed on the cylinder cover 34; Two opposite crushing rollers 11 are provided in the crushing bin 1, and the crushing rollers 11 are rotated on the crushing bin 1 through a rotating shaft and driven by a first motor 12; A rectangular groove 13 is formed at the bottom of the crushing bin 1; the screening bin 2 is installed at the bottom of the crushing bin 1 and communicated with the rectangular groove 13; On the opposite sides of the two crushing rollers 11, a stop block 14 is provided, and the stop block 14 is parallel to the crushing roller 11; the surface of the stop block 14 close to the crushing roller 11 is an arc surface; a brush layer 15 is provided on the outer circumferential surface of the stop block 14; On the opposite sides of the two stop blocks 14, an electric push rod 16 is fixedly connected, and the other side of the electric push rod 16 is fixedly installed on the side walls of both sides of the crushing bin 1; An opening is formed on the screening bin 2; a collection bin 21 is slidably connected in the screening bin 2; legs 22 are provided at the bottom of the collection bin 21; a first air outlet pipe 23 is installed in the collection bin 21; a partition layer is laid in the collection bin 21; On both sides of the collection bin 21, L-shaped plates 24 arranged in mirror images are fixedly connected; rollers 241 are rotated at the tops of the L-shaped plates 24; on the opposite sides of the two L-shaped plates 24, a rotating rod 25 is rotated, and the rotating rod 25 is driven by a second motor 26; the same screen 27 is wound around the two rotating rods 25, and the screen 27 bypasses the two rollers 241; When crushing the sample, start the sample crusher. The first motor 12 will drive the two crushing rollers 11 to rotate relatively. At the same time, control the two second motors 26 to rotate forward and backward. When the two second motors 26 rotate forward, the left rotating rod 25 will release the screen 27, and the right rotating rod 25 will wind the screen 27, so that the screen 27 moves to the right along the roller 241. When the two second motors 26 rotate backward, the right rotating rod 25 will release the screen 27, and the left rotating rod 25 will wind the screen 27, so that the screen 27 moves to the left along the roller 241. By controlling the second motor 26 to rotate forward and backward in a cycle, the screen 27 can move back and forth to the left and right. Then put the sample into the cylinder 3. The sample in the cylinder 3 will move downward and contact 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 cylinder 3 gradually decreases until all samples are crushed.

[0022] When the sample is gradually crushed, the crushed sample will fall onto the screen 27 that moves back and forth to the left and right. The screen 27 can screen the crushed sample. The screened sample will fall onto the partition layer in the collection bin 21. When the crushing is completed, take out the collection bin 21 and collect the sample. Then the collected sample can be detected; Subsequently, the collection bin 21 is placed into the screening bin 2, and the partition in the collection bin 21 is removed. Subsequently, an external air source is connected to the first intake pipe 35, and the first outlet pipe 23 is connected to an external vacuum cleaner. Subsequently, the first motor 12 and the second motor 26 are continuously controlled to operate. When the gas blows downward through the barrel 3, the surface of the barrel 3 can be purged, thereby driving the sample adhered to the inside of the barrel 3. When the gas passes through the rotating crushing roller 11, the crushing roller 11 can be purged, thereby taking away the sample remaining on the crushing roller 11. When the gas passes through the gas screen 27, the passing gas can also take away the sample remaining on the screen 27. Subsequently, the sample will be drawn out through the first outlet pipe 23 following the gas, thereby reducing the amount of sample remaining in the sample crusher.

[0023] When the gas purges the crushing roller 11, control the electric push rod 16 to extend. The extended electric push rod 16 will push the block 14 to move. The moving block 14 will move towards the side of the crushing roller 11. At the same time, the block 14 will drive the brush layer 15 to gradually contact the rotating crushing roller 11. Therefore, the brush layer 15 can clean the crushing roller 11, thereby removing the sample remaining on the crushing roller 11. At the same time, in cooperation with the flowing gas, the sample can follow the gas and fall downward, and then be discharged through the first outlet pipe 23. If some samples cannot pass through the screen 27, control the two second motors 26 to drive the two rotating rods 25 to rotate clockwise. At this time, the left rotating rod 25 will release the screen 27, and the right rotating rod 25 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 screen that has screened the sample rotates into the L-shaped plate 24, and replaces the filter screen of the unscreened sample under the crushing roller 11. After the cleaning of the crushing roller 11 is completed, control the electric push rod 16 to return to its initial state, thereby driving the block 14 and the brush layer 15 away from the crushing roller 11 and restoring the initial state. Since the collection bin 21 can be taken out of the screening bin 2, the collection bin 21 can be manually cleaned, and then the partition can be laid in the collection bin 21; During this process, by introducing gas into the crushing chamber 1 and the screening chamber 2, the crushing chamber 1, the crushing rollers 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 carried out. At the same time, in cooperation with the brush layer 15 on the baffle 14, the crushing rollers 11 can be cleaned, thereby further reducing the residual samples in the crushing chamber 1. At the same time, by replacing the sieve mesh 27 for screening samples, it is possible to avoid the presence of samples on the sieve mesh 27, so that when processing other types of samples again, they will not be mixed with the residual samples, resulting in cross-contamination, and causing the analysis data to be distorted, making the analysis results such as the chemical composition and mineral content of the samples deviate from the actual values, thus affecting the judgment of important geological information such as the ore grade and geological structure by geological personnel, and may lead to incorrect exploration conclusions and decisions.

[0024] As an embodiment of the present invention; the barrel 3 is composed of a plurality of rotating plates 31; the end faces of adjacent rotating plates 31 that are close to each other are semi-circular surfaces and are in contact with each other; A round rod is fixedly connected inside each rotating plate 31, and the round rods are all rotatably arranged on the top of the crushing chamber 1; a first gear 32 is fixedly connected to the top of each round rod; An isolation cylinder 33 is arranged on the outer circle of the barrel 3; a circular groove is opened at the top of the isolation cylinder 33, and the cylinder cover 34 is inserted into the circular groove; The round rods all pass through the isolation cylinder 33 and extend above the isolation cylinder 33, and the first gear 32 is located on the upper surface of the isolation cylinder 33; a toothed ring 36 is rotatably connected to the upper surface of the isolation cylinder 33, and teeth are provided on both the inner and outer circles of the toothed ring 36; The first gear 32 is located inside the toothed ring 36 and meshes with the inner circle of the toothed ring 36; a second gear 37 is rotatably arranged on the top of the isolation cylinder 33 and meshes with the outer circle of the toothed 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 isolation cylinder 33; a second air outlet pipe 332 is installed at the bottom of the isolation cylinder 33 on the side of the isolation cylinder 33; A spiral sheet 39 is fixed inside the isolation cylinder 33, and the spiral sheet 39 is not in contact with the barrel 3 in the initial state; the spiral sheet 39 is made of elastic rubber material.

[0025] When other types of samples need to be processed, control the rotation of the third motor 38, thereby driving the rotation of the second gear 37. The rotating second gear 37 will drive the rotation of the toothed ring 36. Since the first gear 32 meshes with the inner ring of the toothed ring 36, all the first gears 32 will be driven 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 180 degrees, at this time, the rotating plate 31 will change its surface, rotate the surface that originally contacted the previous batch of samples into the inside of the partition cylinder 33, and contact the clean side surface of the rotating plate 31 with the samples to be broken, so as to avoid the situation that the samples remaining on the original surface of the rotating plate 31 will adhere to the new samples, resulting in cross-contamination.

[0026] Further, by introducing gas into the second air inlet pipe 331 and connecting the second air outlet pipe 332 to an external vacuum cleaner, the gas entering the partition cylinder 33 will flow spirally along the spiral fins 39. The flowing gas will flow along the outer circle of the barrel 3, thereby blowing off the sample impurities adhering to the outer circle of the barrel 3 and flowing together 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. During this process, the side of the rotating plate 31 that originally adhered to the sample can be cleaned without affecting the crushing work. After the side surface of the rotating plate 31 that adhered to the sample is cleaned, when continuing to crush the next batch of samples, repeat the above operations; at the same time, since the spiral fins 39 are made of elastic rubber material, when the rotating plate 31 rotates, it will squeeze the spiral fins 39, and the spiral fins 39 will deform, so it will not hinder the rotation process of the rotating plate 31.

[0027] As an embodiment of the present invention; magnets are fixedly connected to the surfaces of both of the two stoppers 14; a mesh belt 4 is rotatably connected to the surface of the stopper 14, and the mesh belt 4 is a metal mesh belt and is adsorbed on the surface of the stopper 14; the brush layer 15 is uniformly fixedly connected to the outer circumferential surface of the mesh belt 4; the width of the mesh belt 4 is less than the length of the stopper 14, and the mesh belt 4 is located between the two electric push rods 16; the brush layer 15 contacts the top and bottom of the inner cavity of the crushing chamber 1.

[0028] Two driving rollers 41 are rotatably connected inside 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; air grooves 42 are opened inside the stopper 14.

[0029] Two conduits 43 are fixedly connected to the 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 communicated with 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; Uniformly arranged first air ducts 44 and second air ducts 45 are opened inside the stopper 14; There is a gap between each of the two stoppers 14 and the side wall of the crushing chamber 1, and the space between the stopper 14 and the side wall of the crushing chamber 1 is a cleaning chamber; a third air inlet pipe 46 is installed at the top of the cleaning chamber; Third air outlet pipes 47 are installed on the side walls of the crushing chamber 1, and the third air outlet pipes 47 communicate with the cleaning chamber.

[0030] After the brush layer 15 finishes cleaning the crushing roller 11 and the stopper 14 returns to its initial state, control the fourth motor 411 to rotate. It will drive the mesh belt 4 to slowly rotate downward through the driving roller 41. The mesh belt 4 will adsorb on the surface of the stopper 14 and rotate. At the same time, the mesh belt 4 will drive the brush layer 15 for cleaning the crushing roller 11 to rotate. When the brush layer 15 that has cleaned the crushing roller 11 rotates into the cleaning chamber, control the mesh belt 4 to stop rotating. At this time, the mesh belt 4 and the brush layer 15 that were originally close to the crushing roller 11 side will be rotated into the cleaning chamber, and the clean mesh belt 4 and brush layer 15 originally in the cleaning chamber will be rotated to the side of the crushing roller 11, thus avoiding the presence of sample impurities on the brush layer 15 and the mesh belt 4 close to the crushing roller 11 side. When crushing a new sample again, the sample impurities on the mesh belt 4 and the brush layer 15 will be mixed with the new sample impurities, thus forming a situation of cross-contamination.

[0031] After the brush layer 15 that has cleaned the crushing roller 11 rotates into the cleaning chamber, introduce gas into the third air inlet pipe 46, and at the same time use a vacuum cleaner to extract the third air outlet pipe 47. The flowing gas will clean the surface of the mesh belt 4 and the brush layer 15, so that the residual sample impurities on the mesh belt 4 and the brush layer 15 can be removed. When the mesh belt 4 and the brush layer 15 in the cleaning chamber are cleaned, if it is necessary to crush the next batch of samples, repeat the above operations.

[0032] Since the air groove 42 is provided in the stopper 14, when cleaning the crushing roller 11, introduce gas into the conduit 43. The gas will enter the air groove 42 and then be ejected through the first air passage 44. The gas ejected from the first air passage 44 will act on the crushing roller 11, so that the crushing roller 11 can be further purged, improving the cleaning effect on 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 in the cleaning chamber, the gas in the air groove 42 will also be ejected from the second air passage 45. The ejected gas will act on the mesh belt 4, so that the mesh belt 4 and the brush layer 15 can be cleaned from the inside of the mesh belt 4, further improving the cleaning effect on the mesh belt 4 and the brush layer 15 for the next use.

[0033] As an embodiment of the present invention; two baffles 5 are arranged up and down at both ends of the two crushing rollers 11, and the two baffles 5 are in mutual contact; the two baffles 5 are perpendicular to and in mutual contact with the two stoppers 14; both ends of the mutually contacting sides of the two baffles 5 are provided with two semi-circular grooves 51, and the rotating shafts on the two crushing rollers 11 pass through the opposite semi-circular grooves 51 and are in mutual contact with the semi-circular grooves 51; The two opposite sides of the two baffles 5 respectively pass through the top and bottom of the crushing chamber 1 and extend to the top and bottom of the crushing chamber 1 respectively; the baffle 5 is slidably connected to the crushing chamber 1; Both sides of the two baffles 5 extending out of the top and bottom of the crushing chamber 1 are fixedly connected with driving blocks 52; driving cylinders 53 are fixedly connected to the driving blocks 52, and the other sides of the cylinders 53 are fixed on the surface of the crushing chamber 1; the openings of the rectangular grooves 13 are all designed with rounded corners.

[0034] During 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 continuously flow from top to bottom. The cylinders 53 controlling the connection of the driving blocks 52 gradually extend, thereby driving the movement of the driving blocks 52. The moving driving blocks 52 will drive the mutually contacting stoppers 14 above and below to move away from each other, and the stoppers 14 will gradually extend out of the crushing chamber 1. During the process of the stoppers 14 extending out, the crushing chamber 1 will scrape the surface of the stoppers 14, so that the sample impurities adhered to the surface of the stoppers 14 can be gradually pushed off. The pushed-off sample impurities will be carried away by the flowing gas. When the stoppers 14 completely extend out of the crushing chamber 1, at this time, the crushing chamber 1 scrapes the entire surface of the stoppers 14, thereby removing the sample impurities remaining on the surface of the baffles 5. Due to the rounded corner design at the opening of the rectangular groove 13, the sample impurities falling to the opening position of the rectangular groove 13 will slide down and move downward under the blowing of the gas. After the crushing roller 11 is cleaned, the cylinders 53 are controlled to return to the initial state. The cylinders 53 in the initial state will drive the baffles 5 to gradually return to the initial state through the driving blocks 52, and finally the upper and lower baffles 5 are in mutual contact, and the semi-circular grooves 51 are in contact with the rotating shafts on the crushing rollers 11; 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 situation that when the next batch of samples is crushed, the sample impurities adhered to the surface of the baffles 5 will be mixed with the newly crushed samples, resulting in cross-contamination of the newly crushed samples.

[0035] As an embodiment of the present invention; evenly arranged partition bars 28 are fixedly connected to the surface of the sieve 27, and the partition bars 28 are made of elastic rubber material; on the opposite sides of the L-shaped plates 24, evenly arranged fourth air inlet pipes 29 are installed on the screening chamber 2; fourth air outlet pipes 291 are installed below the fourth air inlet pipes 29.

[0036] Since the partition bars 28 are fixedly connected to the screen 27 and are evenly arranged, when the screen 27 rotates into the right L-shaped plate 24, the partition bars 28 can push the sample to move, thus preventing the sample from rolling on the screen 27, resulting in the rolling sample always remaining on the screen 27 below the crushing roller 11; After the screen 27 originally located below the crushing roller 11 rotates into the right L-shaped plate 24, gas is introduced into the fourth air inlet pipe 29, and at the same time, a vacuum cleaner sucks the fourth air outlet pipe 291, so that the sample falling 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 purge the replaced screen 27 between the rotating roller 241 and the rotating rod 25. Subsequently, the blown-off sample will be discharged from the fourth air inlet pipe 29. During this process, the replaced screen 27 can be cleaned, so that the sample remaining on the screen 27 can be blown off, preventing the sample from squeezing the screen 27 under the winding pressure if there is a sample when the screen 27 is wound around the rotating rod 25, resulting in holes, tears or local deformation of the screen 27.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the Figure 1 orientation or positional relationship shown, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A geological exploration sample crushing and screening device, characterized in that: Including a sample crusher; the sample crusher includes a crushing chamber (1) and a screening chamber (2); A material cylinder (3) is installed at the top of the crushing chamber (1); a cylinder cover (34) is provided on the material cylinder (3), and a first air inlet pipe (35) is installed on the cylinder cover (34); Two opposite crushing rollers (11) are provided in the crushing chamber (1), and the crushing rollers (11) rotate on the crushing chamber (1) through a rotating shaft and are driven by a first motor (12); A rectangular groove (13) is opened at the bottom of the crushing chamber (1); the screening chamber (2) is installed at the bottom of the crushing chamber (1); A blocking block (14) is provided on each side of the two crushing rollers (11) facing away from each other, and the blocking block (14) is parallel to the crushing roller (11); the surface of the blocking block (14) close to the crushing roller (11) is an arc surface; a brush layer (15) is provided on the outer surface of the blocking block (14); Electric push rods (16) are fixedly connected to each side of the two blocking blocks (14) facing away from each other, and the other side of the electric push rods (16) is fixedly installed on the two side walls of the crushing chamber (1); A collection bin (21) is slidably connected in the screening chamber (2); legs (22) are provided at the bottom of the collection bin (21); a first air outlet pipe (23) is installed in the collection bin (21); a partition layer is laid in the collection bin (21); Mirror-image L-shaped plates (24) are fixedly connected to both sides of the collection bin (21); rotating rollers (241) are rotated at the tops of the L-shaped plates (24); rotating rods (25) are rotated on each side of the two L-shaped plates (24) facing away from each other, and the rotating rods (25) are driven by a second motor (26); the same screen (27) is wound around the two rotating rods (25), and the screen (27) bypasses the two rotating rollers (241).

2. The geological exploration sample crushing and screening device according to claim 1, characterized in that: The material cylinder (3) is composed of a plurality of rotating plates (31); the end faces of adjacent rotating plates (31) close to each other are semi-circular surfaces and are in contact with each other; A round rod is fixedly connected inside each rotating plate (31), and the round rods are all rotated on the top of the crushing chamber (1); a first gear (32) is fixedly connected to the top of each round rod; A separating cylinder (33) is provided on the outer circle of the material cylinder (3); a circular groove is opened at the top of the separating cylinder (33), and the cylinder cover (34) is inserted into the circular groove; The round rods all pass through the separating cylinder (33) and extend above the separating cylinder (33), and the first gears (32) are located on the upper surface of the separating cylinder (33); a toothed ring (36) is rotatably connected to the upper surface of the separating cylinder (33), and teeth are provided on both the inner and outer circles of the toothed ring (36); The first gears (32) are located inside the toothed ring (36) and are meshed with the inner circle of the toothed ring (36); a second gear (37) is rotated on the top of the separating cylinder (33) and is meshed with the outer circle of the toothed 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 separating cylinder (33); a second air outlet pipe (332) is installed on the side of the separating cylinder (33) at the bottom of the separating cylinder (33).

3. The geological exploration sample crushing and screening device according to claim 2, wherein: A spiral sheet (39) is fixed inside the separating cylinder (33), and the spiral sheet (39) is not in contact with the material cylinder (3) in the initial state; The spiral piece (39) is made of elastic rubber material.

4. The geological exploration sample crushing and screening device according to claim 1, wherein: Magnets are fixedly connected to the surfaces of both of the stoppers (14). A mesh belt (4) is rotatably connected to the surface of the stopper (14) and adsorbed on the surface of the stopper (14); the brush layer (15) is uniformly fixedly connected to the outer circumferential 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 the 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), and the fourth motor (411) is installed inside the stopper (14).

5. The geological exploration sample crushing and screening device according to claim 4, wherein: Air grooves (42) are formed inside the stoppers (14). Two guide pipes (43) are fixedly connected to the opposite sides of the two stoppers (14), and the mesh belt (4) is located between the two guide pipes (43); one side of the guide pipe (43) is communicated with the air groove (42), and the other side penetrates out of the crushing chamber (1) and extends to the outside, and the guide pipe (43) is slidably connected to the crushing chamber (1). First air ducts (44) and second air ducts (45) which are uniformly arranged are formed inside the stoppers (14). A gap is left between each of the two stoppers (14) and the side wall of the crushing chamber (1), and the space between the stopper (14) and the side wall of the crushing chamber (1) is a cleaning chamber; a third air inlet pipe (46) is installed at the top of the cleaning chamber. Third air outlet pipes (47) are installed on the side walls of the crushing chamber (1), and the third air outlet pipes (47) are communicated with the cleaning chamber.

6. The geological exploration sample crushing and screening device according to claim 1, wherein: Two baffles (5) are arranged up and down at both ends of the two crushing rollers (11), and the two baffles (5) are mutually attached. The two baffles (5) are perpendicular to the two stoppers (14) and are mutually attached; semi-circular grooves (51) are formed at the ends of the mutually attached sides of the two baffles (5), and the rotating shafts on the two crushing rollers (11) pass through the opposite semi-circular grooves (51) and are mutually attached to the semi-circular grooves (51). The opposite sides of the two baffles (5) pass through the top and bottom of the crushing chamber (1) respectively and extend to the top and bottom of the crushing chamber (1); the baffles (5) are slidably connected to the crushing chamber (1). Drive blocks (52) are fixedly connected to the sides of the two baffles (5) extending out of the top and bottom of the crushing chamber (1) respectively; cylinders (53) are fixedly connected to the drive blocks (52), and the other sides of the cylinders (53) are fixed on the surface of the crushing chamber (1).

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

8. The geological exploration sample crushing and screening device according to claim 1, wherein: Partition strips (28) which are uniformly arranged are fixedly connected to the surfaces of the sieve meshes (27), and the partition strips (28) are made of elastic rubber material.

9. The geological exploration sample crushing and screening device according to claim 1, characterized in that: Fourth air inlet pipes (29) which are uniformly arranged are installed on the opposite sides of the L-shaped plates (24) on the screening chamber (2); fourth air outlet pipes (291) are installed below the fourth air inlet pipes (29).

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