Lead-zinc ore dressing plant waste tailings waste rock bin ore material sampling system

Abstract

The invention discloses a sampling system for waste tailings and waste rock bin of a lead-zinc ore dressing plant, comprising a sampling device, a sample preparation and sampling device, and a discarded sample device connected in sequence; the sampling device comprises a sampling bucket, a sampling conveying belt, and a mineral sample elevator connected in sequence, the sampling bucket is installed at the unloading end of the discarded belt so as to move through the tailings flow at a uniform speed to intercept the full cross-section of the tailings flow for sampling, and then the mineral sample is conveyed to the sample preparation and sampling device through the belt conveyor and the mineral sample elevator; the sample preparation and sampling device comprises a first-level vibrating screen, a first-level crusher, a first-level reducer, a second-level vibrating screen, a second-level crusher, a fine crusher, a second-level reducer, a sample sampler, and a third-level reducer connected in sequence, the first-level reducer is a rotary reducer, the second-level reducer is a reciprocating reducer, and the third-level reducer is a quantitative reducer. The invention can smoothly complete the automatic sampling of waste tailings and waste rock bin mineral materials in the ore dressing plant.

Description

Technical Field

[0001] The invention relates to a ore material sampling system for discarded tailings and waste rock bins in a lead-zinc ore dressing plant. Background Art

[0002] The discarded tailings after intelligent sorting in the lead-zinc ore concentrator are transported to the waste rock bin through the waste rock belt. According to the needs of production work, the waste rock needs to be automatically sampled for testing and analysis to determine the quality of the waste rock and improve the sorting work.

[0003] The automated sampling of waste rock requires an automatic sampling system that can fit the actual situation of the applicant's lead-zinc ore concentrator, so as to successfully complete the automatic sampling of waste tailings and waste rock bin materials in the concentrator.

[0004] The existing sampling equipment is used in lead-zinc ore dressing plants. Both the sampling equipment and the sample preparation equipment have certain defects. The main problem with the sampling equipment is that when sampling the ore, some impurities may remain on the inner wall of the machine, which interferes with the information collection of the sampled ore, and after the taken ore is poured into the sampling conveyor belt, the metal substances in the ore are easy to affect the detection of the ore. The main problems with the sample preparation equipment are: generally two-stage crushing is adopted, and the degree of crushing is not enough; the crusher lacks a certain cleaning function, so that after each work is completed, there will be residual materials inside the crusher, which will affect the next use on the one hand, and the residual materials in the machine for a long time will also affect the performance of the machine. Summary of the invention

[0005] The present invention aims to provide a system for sampling and preparing ore materials from waste tailings and waste rock bins in a lead-zinc ore concentrator, so as to overcome the deficiencies of the prior art and smoothly complete the automatic sampling and preparing work of ore materials from waste tailings and waste rock bins in a lead-zinc ore concentrator.

[0006] In order to solve the above technical problems, the present invention provides a lead-zinc ore dressing plant waste tailings and waste rock bin ore material sampling system, comprising a sampling device, a sample preparation and sampling device, and a discarded sample device connected in sequence; the sampling device comprises a sampling bucket, a sampling conveyor belt, and an ore sample elevator connected in sequence, the sampling bucket is installed at the unloading end of the waste belt so as to move through the tailings flow at a uniform speed to intercept the full cross-section of the tailings flow for sampling, and then the ore sample is transported to the sample preparation and sampling device through the belt conveyor and the ore sample elevator; the sample preparation and sampling device comprises a first-level vibrating screen, a first-level crusher, a first-level reducer, a second-level vibrating screen, a second-level crusher, a fine crusher, a second-level reducer, a sample sampler, and a third-level reducer connected in sequence, the first-level reducer is a rotary reducer, the second-level reducer is a reciprocating reducer, and the third-level reducer is a quantitative reducer;

[0007] The sampling device, the front side of the sampling bucket of which is open, the bottom of the sampling bucket is fixedly connected to a bottom plate, the four bottom corners of the bottom plate are fixedly connected to universal wheels, the top two sides of the bottom plate are fixedly connected to rectangular plates, the front sides of the two rectangular plates are fixedly connected to No. 1 electric telescopic rods, the telescopic ends of the two No. 1 electric telescopic rods are fixedly connected to L-shaped plates, the rear sides of the two L-shaped plates are fixedly connected to the same door panel, the door panel is arranged at the front side of the sampling bucket, the waste throwing belt is arranged above the rear side of the sampling bucket, the sampling conveying belt is arranged below the front side of the sampling bucket, the front two sides of the bottom plate are respectively fixedly connected to a cylinder and a telescopic column, the front side of the cylinder and the fixed ends of the telescopic column are fixedly connected to a vertical plate; the four rear corners of the door panel are fixedly connected to a cylinder, the front two sides of the sampling bucket are provided with circular grooves, the outer side of the cylinder is slidably connected to the inner wall of the circular groove;

[0008] The sampling device is also provided with a cleaning mechanism, which is arranged in the sampling bucket and is used to clean the inner wall of the sampling bucket;

[0009] The sampling device is also provided with a shielding mechanism, which is arranged on the sampling conveying belt to shield dust and impurities;

[0010] The sampling device is also provided with a metal removal component, which is arranged on the shielding mechanism and is used to remove metals in the ore.

[0011] The cleaning mechanism includes two motors, two connecting frames, a top plate, three springs and a cleaning plate. The bottoms of the two connecting frames are respectively fixedly connected to the two sides of the top of the same sampling bucket, and the side of the two connecting frames that are close to each other is set as an open place. One side of the two motors is respectively fixedly connected to the front sides of the two connecting frames. The output ends of the two motors are fixedly connected with screws, and one end of the two screws is respectively rotatably connected to the rear inner wall of the connecting frame. The two sides of the top plate are respectively threaded on the screws, one end of the three springs is fixedly connected to the bottom of the top plate, and the three springs are all sleeved on the circular telescopic rods. The fixed ends of the three circular telescopic rods are respectively fixedly connected to the bottom of the top plate, and the other ends of the three springs and the telescopic ends of the three circular telescopic rods are fixedly connected to the top of the same cleaning plate. The interior of the sampling bucket is set as an inclined surface, and the bottom of the cleaning plate is set to a shape adapted to the inclined surface.

[0012] The shielding mechanism includes a shielding cover, which is arranged on the top of the sampling conveyor belt, the shielding cover is located below the bottom plate, the front side of the shielding cover is arranged as an opening, and the top of the shielding cover is arranged with a rectangular hole; the top of the shielding cover is fixedly connected with a collecting bucket, the collecting bucket is located directly above the rectangular hole, the top of the shielding cover is fixedly connected with a baffle, the rear side of the baffle is fixedly connected with a No. 2 electric telescopic rod, the telescopic end of the No. 2 electric telescopic rod is fixedly connected with a sealing cover, and the rear side of the sealing cover passes through the front side of the collecting bucket and extends to the rear inner wall of the collecting bucket.

[0013] The metal removal component includes two rectangular frames, the tops of the two rectangular frames are set to be open, the two sides of the two rectangular frames are fixedly connected with connecting blocks, the tops of the four connecting blocks are slidably connected to the top inner wall of the same shielding cover, and multiple magnets are set on the bottom inner walls of the two rectangular frames.

[0014] The fine crusher includes a base, a shell is fixedly installed on one side of the top of the base, the top of the shell is fixedly connected to the feed hopper, and a transmission belt is movably provided at the bottom of the feed hopper, one side of the transmission belt is transmission-connected to the top of the rotating shaft, and the other side of the transmission belt is transmission-connected to a servo motor, and the servo motor is fixedly installed on a support frame, and the bottom end of the support frame is fixedly connected to the other side of the top of the base; the rotating shaft is rotatably arranged in the shell, a plurality of crushing hammers are fixedly connected to the circumference of the rotating shaft, and the bottom end of the rotating shaft is rotatably connected to the bracket, and the bracket is fixedly installed on the bottom of the shell, and the bottom end of the shell is fixedly connected to a discharge barrel, and the inner wall of the discharge barrel slides in contact with a cleaning component, and the cleaning component is movably connected to the bottom end of the rotating shaft.

[0015] The feed hopper is of a U-shaped structure, and two cover plates are slidably provided on the top of the feed hopper, and the cover plates are symmetrically arranged. The inner walls on both sides of the feed hopper are respectively recessed with guide grooves, and guide columns are slidably connected in the guide grooves, and the guide columns are respectively fixedly connected to the two sides of the cover plates; the guide grooves are of an L-shaped structure and are symmetrically arranged, and there are four guide columns and they are symmetrically arranged in pairs, and the two cover plates have recessed grooves on the sides opposite to the same end faces.

[0016] One end surface of the support frame is fixedly connected to one end of the reinforcing plate, and the other end of the reinforcing plate is fixedly connected to the top surface of the base.

[0017] The cleaning assembly includes a scraper strip, a connecting rod, a collar, a half-bolt, a movable cavity, and a limit plate. The movable cavity is recessed at the bottom end of the rotating shaft, and the movable cavity is slidably sleeved with a limit plate. One end of the limit plate is fixedly connected to a half-bolt, and the half-bolt is sleeved with the movable cavity through a threaded structure. The half-bolt is rotatably sleeved with a collar on the side away from the movable cavity. The outer wall of the collar is fixedly connected to a plurality of connecting rods, and the ends of the connecting rods away from the collar are respectively fixedly connected with scrapers, and the scrapers are in sliding contact with the inner wall of the discharge barrel; the discharge barrel is a trumpet-shaped structure, and one end face of the scraper strip is fixedly connected with a brush and the brush is in sliding contact with the inner wall of the discharge barrel.

[0018] It also includes a control system, which combines three control modes: automatic working mode, remote centralized mode, and manual mode to control sampling and sample preparation.

[0019] The system of the present invention is adapted to the actual needs of the lead-zinc ore dressing plant, including sampling equipment, sample preparation and sample separation equipment, and discarding equipment connected in sequence. The sample preparation and sample separation equipment includes a first-level vibrating screen, a first-level crusher, a first-level reducer, a second-level vibrating screen, a second-level crusher, a fine crusher, a second-level reducer, a sample sampler, and a third-level reducer connected in sequence. The first-level reducer is a rotary reducer, the second-level reducer is a reciprocating reducer, and the third-level reducer is a quantitative reducer. A fine crusher is added on the basis of the prior art, and fine crushing is performed after the second-level crushing, so that the crushing fineness meets the requirements of technical analysis. The present invention can realize automatic interception sampling of ore at the end of the discarding belt, and through the conveying device to the crushing equipment, crushing and sample reduction, and crushing into component samples of corresponding weight and particle size.

[0020] The sampling device of the present invention is provided with a circular groove and a circular column on the sampling hopper and the door panel, respectively, so that when the door panel is opened, the door panel is prevented from rotating and dislocating, thereby ensuring that when the sampling hopper is closed, it can be closed through the door panel, which is convenient for sampling mineral materials, and the No. 2 electric telescopic rod is started, and the telescopic end of the No. 2 electric telescopic rod drives the sealing cover to pull the sealing cover out of the collecting hopper, and then the collecting hopper is opened, and the sampled mineral materials are placed on the sampling conveyor belt through the collecting hopper and the rectangular hole, so that when it is necessary to place objects on the sampling conveyor belt, it can be opened, and conversely, it can be closed, thereby ensuring that the sampling conveyor belt can be taken out of the sealing state. It is transported in a closed state to ensure the normal sampling and the correctness of the collected information. At the same time, a cleaning and shielding mechanism and a metal removal component are set on the equipment to shield it, thereby reducing the entry of dust and impurities during transportation, facilitating the detection of the sampled ore, and can absorb the metal substances in the ore being transported, thereby reducing the interference of metal substances during detection and ensuring the normal detection of the ore. After the sampling bucket is sampled, its inner wall can be cleaned to ensure that there will be no blockage or accumulation of residues in the sampling bucket, thereby ensuring that the poured ore will not be mixed with impurities and ensuring the accuracy of the test results.

[0021] The fine crusher of the present invention cleans the inner wall of the discharge barrel through a cleaning component to avoid residual materials inside, prevent the next use from being affected, and prevent the residual materials from affecting the operation of the machine; the movably arranged cover plate is convenient to open when in use, and the cover plate is closed during crushing to avoid the scattering of crushed dust, which has a certain dust-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a system block diagram of the invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the sampling device of the present invention;

[0024] Figure 3 is a schematic diagram of the top view of the sampling device of the present invention;

[0025] Figure 4 is a schematic cross-sectional view of a cleaning structure of a sampling device of the present invention;

[0026] Figure 5 is an exploded view of the shielding structure of the sampling device of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the fine crusher of the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the fine crusher of the present invention;

[0029] Figure 8 It is a schematic cross-sectional structure diagram of a fine crusher of the present invention;

[0030] Fig. 9 yes Figure 8 A schematic diagram of the structure enlargement in the middle;

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the feed hopper of the fine crusher of the present invention. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0033] like Figure 1 As shown, the lead-zinc ore dressing plant waste tailings and waste rock bin ore material sampling system of the present invention comprises a sampling device, a sample preparation and separation device, and a sample discarding device connected in sequence. The sample discarding device can adopt the equipment of the prior art.

[0034] The sampling equipment includes a sampling bucket, a sampling conveyor belt and a mineral sample elevator connected in sequence. The sampling bucket is installed at the unloading end of the waste belt so that it can move at a uniform speed through the tailings flow to intercept the full cross-section of the tailings flow for sampling, and then the mineral sample is transported to the sample preparation and sorting equipment through the belt conveyor and the mineral sample elevator. The belt conveyor and the mineral sample elevator can be structures of the prior art. The sampling belt adopts a fully sealed belt conveyor belt, which is mainly composed of a PVC belt, a driving device, a material guide device, a cleaning device, an iron removal device, a sealing cover, a bracket, etc. After the mineral sample elevator receives the sample, it transports the mineral sample from the 16-meter high platform to the first crushing feed hopper on the 10-meter high platform, with a vertical drop of 6 meters. A polymer flow tube is used to transport the sample taken by the sampler to the crushing system.

[0035] The sample preparation and sample separation equipment comprises a first-stage vibrating screen, a first-stage crusher, a first-stage reducer, a second-stage vibrating screen, a second-stage crusher, a fine crusher, a second-stage reducer, a sample divider and a third-stage reducer connected in sequence, wherein the first-stage reducer is a rotary reducer, the second-stage reducer is a reciprocating reducer, and the third-stage reducer is a quantitative reducer. Among them, the vibrating screen, the first-stage crusher, the second-stage crusher, the reducer and the sample divider can all adopt the structure of the existing technology.

[0036] The present invention can realize automatic interception sampling of ore at the end of the waste belt, and transmit it to the crushing equipment through the conveying device for crushing and sample reduction, and crush it into component samples of corresponding weight and particle size.

[0037] The discarded samples separated by the shrinking are concentrated into the discarded sample bucket through the conveyor belt, and then transported to the waste ore bin outlet for centralized treatment. The discarded sample equipment mainly consists of a discarded sample bucket, a discarded sample conveyor belt, and a discarded sample flow pipe.

[0038] The rotary reducer is mainly composed of a cover, a sampling bucket, a motor, a bracket, a sweeper, etc. When the ore material falls from the feed port, the motor drives the rotating sampling bucket to rotate and sweep under the feed port to receive the ore sample with a full cross section falling. The ore sample slides through the flow tube of the sampling bucket to the storage hopper below. Except for the intercepted ore sample, most of the ore samples entering from the feed port flow out through the discharge port. The reciprocating reducer installation is mainly composed of a cover, a sampling bucket, a speed regulating motor, a chain transmission device, a bracket, and a sweeper. When the ore sample falls from the feed port, the motor drives the sampling bucket to make a linear reciprocating motion through the chain transmission, and intercepts the falling ore sample with a full cross section. The detected ore sample directly enters the next level storage hopper, and the discarded sample is returned to the discarded sample bucket through the discarded sample return system.

[0039] The sample divider is installed at the outlet of the fine crusher, and is mainly composed of a sample receiving bottle (4), a sample divider, and a material chute. The sample divider is a rotating mechanism, and a motor is installed in its box. Through the worm drive, it can achieve deceleration. It drives the rotary branch pipe to rotate at a fixed speed, and the sample divider connected to the rotary branch pipe also moves at the same time, so as to evenly distribute the sample to the sample bottle. At the same time, a dust collection port is reserved on the top, which can be connected to the main dust collection system. In order to clean the dust accumulated on the sample divider, a sweeper is installed above the sample divider for easy cleaning.

[0040] In order to facilitate automatic metering, the crusher and sample divider are equipped with a feeding and storage weighing device, including a storage hopper, a metering device, and a feeding device. The storage hopper adopts a circular cone hopper design. In order to prevent the ore sample from adhering to the surface of the metering hopper, a sweeper is installed on the side of the cone hopper to clean the dust and ore sample. The sample storage cone hopper is equipped with an infrared drying device to dry the cone hopper at a constant temperature to ensure the dryness of the ore sample. The metering device is composed of Toledo MM weighing module and IND system high-precision instrument. The weighing instrument provides a PLC digital interface PROFINET interface, which is convenient for bus communication with the sample preparation system, and is convenient for timely and accurate understanding of the operation status of the sample preparation system. The feeding device adopts an electromagnetic electric vibration feeder, which automatically controls the amplitude of the electric vibration through the sample preparation system to achieve uniform feeding of the crusher and avoid jamming of the crusher.

[0041] The particle size of the waste tailings materials in the ore dressing plant to which the present invention is applicable is basically below 60mm, but sometimes there will be ores with a particle size of 60-120mm. In order to ensure that the ore particle size at the feed port of the first crusher is less than 60mm, a vibrating screen is added at the entrance of the feed storage metering hopper of the first crusher to isolate the ore with large particle size from entering the storage hopper. The first-stage vibrating screen adopts a double-outlet mode, outlet A is directly connected to the feed storage hopper of the first crusher, the particle size of outlet A is less than 50mm, and outlet B is directly connected to the discarded sample flow pipe, and the vibrated ore is directly thrown into the storage bucket. The feed size of the secondary crusher is less than 10mm. Due to the wear of the jaw plate during the use of the primary crusher, the storage size of the first crushing may be larger than 10mm. Therefore, it is necessary to add a vibrating screen to screen out the ore larger than 10mm to avoid affecting the secondary crushing. The secondary vibrating screen adopts a double outlet mode. Outlet A is directly connected to the feed storage hopper of the second crushing. The particle size of outlet A is less than 10mm, and outlet B is directly connected to the discarded sample flow pipe to throw the vibrated ore directly into the storage barrel.

[0042] The primary crusher and secondary crusher of the present invention adopt jaw crushers. The primary crusher can adopt PE-150×125A jaw crusher, with a feed particle size of less than 80mm, a discharge particle size of 4-40mm, a feed anti-blocking detector, and a jaw plate made of high manganese steel jaw plate. The discharge particle size of the first crusher needs to be guaranteed to be less than 10mm, and the gap between the movable jaw plate and the fixed jaw plate of the first crusher needs to be adjusted to less than 10mm. The secondary crusher can adopt Guiyang Prospecting SP-100×100 jaw crusher, with a feed particle size of less than 25mm, a discharge particle size of 1-15mm, a feed anti-blocking detector, and high chromium steel.

[0043] The present invention also comprises a control system, which combines three control modes: automatic working mode, remote centralized mode and manual mode to control sampling and sample preparation.

[0044] The control system equipment includes CPU and I / O equipment, monitoring touch screen, UPS power supply, console, control cabinet, software, other on-site auxiliary control equipment, etc. The above-mentioned CPU and I / O equipment, monitoring touch screen, UPS power supply, console, control cabinet, software, and other on-site auxiliary control equipment adopt products of existing technology. Among them, the CPU and I / O equipment adopt Siemens S71500 series CPU and I / O equipment. The control system mainly includes automatic control of all equipment for sampling, sample preparation, and sample disposal, automatic adjustment of sample preparation parameters, remote push reminder of alarm fault signals, etc.

[0045] The functions of the control system mainly include: (1) The sampling system adopts unattended mode. Under normal working conditions, no human intervention is required. Only samples need to be taken every day or shift, and the video system is used to monitor the sampling process throughout the process to ensure the representativeness of the samples. (2) The crusher inlet continuously feeds quantitatively to improve the uniformity of the outlet particle size. (3) Provides crusher jamming and blocking alarm functions. (4) Real-time monitoring of all online equipment, real-time dynamic and static graphic display, and real-time data display. (5) Provides a data modification window to facilitate reasonable sampling. (6) Real-time recording curve and historical record curve query. (7) Data background real-time storage for easy query and traceability. (8) Unattended and manual operation without disturbance switching. (9) Provides mobile phone APP remote monitoring and mobile phone SMS / telephone alarm reminders (optional) and WeChat alarm information push reminders. (10) Video monitoring without blind spots throughout the sampling process, providing a remote APP viewing interface. (11) Provides remote service functions.

[0046] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the sampling equipment of the waste tailings and waste rock bin ore sampling system of the present invention includes a sampling bucket, a sampling conveyor belt and an ore sample elevator connected in sequence. The front side of the sampling bucket 1 is an open part. The bottom of the sampling bucket 1 is fixedly connected to a bottom plate 2. The four bottom corners of the bottom of the bottom plate 2 are fixedly connected to universal wheels. Rectangular plates 10 are fixedly connected to both sides of the top of the bottom plate 2, and the front sides of the two rectangular plates 10 are fixedly connected to a No. 1 electric telescopic rod 3, and the telescopic ends of the two No. 1 electric telescopic rods 3 are fixedly connected to an L-shaped plate, and the rear sides of the two L-shaped plates are fixedly connected to the same door panel 17. The door panel 17 is arranged on the front side of the sampling bucket 1.

[0047] The waste belt 5 is arranged above the rear side of the sampling bucket 1. The sampling conveyor belt 8 is arranged below the front side of the sampling bucket 1. The front sides of the bottom plate 2 are respectively fixedly connected with the cylinder 9 and the telescopic column. The front side of the cylinder 9 and the fixed end of the telescopic column are fixedly connected with the vertical plate 4. The four corners of the rear side of the door panel 17 are fixedly connected with the cylinder 16. The front sides of the sampling bucket 1 are provided with circular grooves. The outer side of the cylinder 16 is slidably connected with the inner wall of the circular groove.

[0048] The sampling device is also provided with a cleaning mechanism, which is arranged in the sampling bucket 1 and is used for cleaning the inner wall of the sampling bucket 1 .

[0049] The cleaning mechanism includes two motors 11, two connecting frames 12, a top plate 13, three springs 14 and a cleaning plate 15. The bottoms of the two connecting frames 12 are fixedly connected to the top sides of the same sampling bucket 1, and the sides of the two connecting frames 12 that are close to each other are set as an open place. One side of the two motors 11 is fixedly connected to the front sides of the two connecting frames 12, and the output ends of the two motors 11 are fixedly connected with screw rods, and one end of the two screw rods is respectively rotatably connected to the inner wall of the rear side of the connecting frame 12. The two sides of the top plate 13 are respectively threadedly sleeved on the screw rods. One end of the three springs 14 is fixedly connected to the bottom of the top plate 13, and the three springs 14 are sleeved on the circular telescopic rod. The fixed ends of the three circular telescopic rods are fixedly connected to the bottom of the top plate 13. The other ends of the three springs 14 and the telescopic ends of the three circular telescopic rods are fixedly connected to the top of the same cleaning plate 15. The interior of the sampling bucket 1 is set as an inclined surface. The bottom of the cleaning plate 15 is set to a shape that matches the inclined surface.

[0050] After the mineral material is poured out, the motor 11 is started, and the output shaft of the motor 11 drives the screw rod, the screw rod drives the top plate 13, the top plate 13 drives the circular telescopic rod and the spring 14, and the cleaning plate 15 to clean the inclined surface of the sampling bucket 1. When the top plate 13 moves, the spring 14 stretches the circular telescopic rod and makes the bottom of the cleaning plate 15 stick to the inclined surface, so that after the sampling bucket 1 takes samples, its inner wall can be cleaned, thereby ensuring that there will be no blockage or accumulated residue in the sampling bucket 1, thereby ensuring that the poured mineral material will not be mixed with impurities, and ensuring the accuracy of the detection result.

[0051] The sampling device is also provided with a shielding mechanism. The shielding mechanism is arranged on the sampling conveying belt 8 to shield dust and impurities.

[0052] The shielding mechanism includes a shielding cover 6. The shielding cover 6 is arranged on the top of the sampling conveyor belt 8. The shielding cover 6 is located below the bottom plate 2. The front side of the shielding cover 6 is arranged as an opening. A rectangular hole is arranged on the top of the shielding cover 6. A collecting bucket 7 is fixedly connected to the top of the shielding cover 6. The collecting bucket 7 is located directly above the rectangular hole. A baffle 18 is fixedly connected to the top of the shielding cover 6. A No. 2 electric telescopic rod 19 is fixedly connected to the rear side of the baffle 18. The telescopic end of the No. 2 electric telescopic rod 19 is fixedly connected to a sealing cover, and the rear side of the sealing cover passes through the front side of the collecting bucket 7 and extends to the rear inner wall of the collecting bucket 7.

[0053] A shielding cover 6 is provided on the sampling conveying belt 8 to shield it, thereby reducing the entry of dust and impurities during transportation, making it easier to detect the sampled mineral material.

[0054] When the No. 2 electric telescopic rod 19 is started, the telescopic end of the No. 2 electric telescopic rod 19 drives the sealing cover to be pulled out from the collecting bucket 7, and then the collecting bucket 7 is opened, and the sampled mineral materials are placed on the sampling conveyor belt 8 through the collecting bucket 7 and the rectangular hole, so that when it is necessary to place items on the sampling conveyor belt 8, it can be opened, otherwise, it can be closed, thereby ensuring that the sampling conveyor belt 8 can be transported in a closed state, ensuring the normal sampling, and ensuring that the collected information is correct.

[0055] The sampling device is also provided with a metal removal component, which is arranged on the shielding mechanism and is used to remove metal from the ore.

[0056] The metal removal component includes two rectangular frames 20, the tops of the two rectangular frames 20 are set to be open, both sides of the two rectangular frames 20 are fixedly connected with connecting blocks, the tops of the four connecting blocks are slidably connected to the top inner wall of the same shielding cover 6, and multiple magnets are set on the bottom inner walls of the two rectangular frames 20.

[0057] When the ore is transported by the sampling conveyor belt 8, the magnet in the rectangular frame 20 under the shielding cover 6 can absorb the metal substances in the ore being transported, thereby reducing the interference of the metal substances during detection and ensuring the normal detection of the ore.

[0058] As is well known to those skilled in the art, the working principles and wiring methods of the No. 1 electric telescopic rod 3, the waste disposal belt 5, the sampling conveyor belt 8 and the No. 2 electric telescopic rod 19 are commonplace, and they are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0059] The working principle and use process of the sampling equipment are as follows: when in use, the scrapping belt 5 and the sampling conveying belt 8 are started, and the cylinder 9 is started. The telescopic end of the cylinder 9 drives the bottom plate 2 and the sampling bucket 1 to move to the bottom of the scrapping belt 5, and then the mineral material is sampled. After the sampling is completed, the sampling bucket 1 returns to the top of the sampling conveying belt 8, and the No. 1 electric telescopic rod 3 is started. The telescopic end of the No. 1 electric telescopic rod 3 pushes the L-shaped plate and the door panel 17 to open the sampling bucket 1. Since the circular grooves and the cylinders 16 are respectively provided on the sampling bucket 1 and the door panel 17, the door panel 17 is prevented from rotating when the door panel 17 is opened. The sampling hopper 1 is arranged to be closed by the door panel 17, and the sampling hopper 1 is arranged to be closed by the door panel 17, so as to facilitate the sampling of the mineral material. When the No. 2 electric telescopic rod 19 is started, the telescopic end of the No. 2 electric telescopic rod 19 drives the sealing cover to pull the sealing cover out of the collecting hopper 7, and then the collecting hopper 7 is opened, and the sampled mineral material is placed on the sampling conveying belt 8 through the collecting hopper 7 and the rectangular hole. In this way, when it is necessary to place items on the sampling conveying belt 8, it can be opened, and vice versa, it can be closed, so as to ensure that the sampling conveying belt 8 can be transported in a closed state, and the sampling can be ensured. Normally, and also ensure that the collected information is correct, a shielding cover 6 is set on the sampling conveyor belt 8, which can shield it, thereby reducing the falling of dust and impurities during transportation, and facilitating the detection of the sampled ore. When the ore is transported by the sampling conveyor belt 8, the magnet in the rectangular frame 20 under the shielding cover 6 can absorb the metal substances in the ore being transported, thereby reducing the interference of the metal substances during detection, and ensuring the normal detection of the ore. After the ore is poured out, the motor 11 is started, and the output shaft of the motor 11 drives the screw rod, and the screw rod drives the top plate 13. The top plate 13 drives the circular telescopic rod and the spring 14, as well as the cleaning plate 15 to clean the inclined surface of the sampling bucket 1. When the top plate 13 moves, the spring 14 stretches the circular telescopic rod and makes the bottom of the cleaning plate 15 close to the inclined surface, so that after the sampling bucket 1 takes samples, its inner wall can be cleaned, thereby ensuring that there will be no blockage or accumulation of residues in the sampling bucket 1, thereby ensuring that the poured mineral material will not be mixed with impurities, ensuring the accuracy of the test results, and then the sampling conveyor belt 8 transports the mineral material to the mineral sample elevator to transport the mineral sample to the sample preparation and sampling equipment for the next step of processing of the mineral material.

[0060] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, the sample preparation and sorting equipment of the waste tailings and waste rock bin mineral material sampling system of the present invention, wherein the fine crusher includes a base 201. A housing 202 is fixedly installed on one side of the top of the base 201. The top of the housing 202 is fixedly connected to the feed hopper 204. A transmission belt 210 is movably provided at the bottom of the feed hopper 204. One side of the transmission belt 210 is transmission-connected to the top of the rotating shaft 208. The other side of the transmission belt 210 is transmission-connected to the servo motor 206. The servo motor 206 is fixedly installed on a support frame 207. The bottom end of the support frame 207 is fixedly connected to the other side of the top of the base 201. The rotating shaft 208 is rotatably arranged in the housing 202. A plurality of crushing hammers 209 are fixedly connected to the peripheral side of the rotating shaft 208. The bottom end of the rotating shaft 208 is rotationally connected to a bracket 212. The bracket 212 is fixedly installed at the bottom of the housing 202. The bottom end of the housing 202 is fixedly connected to a discharge barrel 203.

[0061] The feed hopper 204 is a U-shaped structure. Two cover plates 205 are slidably provided on the top of the feed hopper 204. The cover plates 205 are symmetrically arranged. The inner walls on both sides of the feed hopper 204 are respectively concavely provided with guide grooves 241. The guide grooves 241 are slidably connected with guide posts 252. The guide posts 252 are respectively fixedly connected to the two sides of the cover plates 205.

[0062] The movable cover 205 is convenient to open when in use. When crushing, the cover 205 is closed to seal the top opening of the feed hopper 204 to prevent the smoke and dust from crushing from scattering, which has a certain dust-proof effect.

[0063] The guide slot 241 is an L-shaped structure and is symmetrically arranged. There are four guide posts 252 and they are symmetrically arranged in pairs. The two cover plates 205 are respectively provided with a groove 251 on the opposite side of the same end surface.

[0064] When the cover plate 205 is opened, it moves toward the center of the feed hopper 204 through the pull groove 251, and the guide columns 252 approaching each other first move downward along the vertical direction of the guide slot 241, and the other guide columns 252 move along the lateral direction of the guide slot 241, thereby driving the two cover plates 205 to move toward the inner side of the feed hopper 204. After the guide columns 252 moving in the lateral direction of the guide slot 241 move to the end of the guide slot 241, the two cover plates 205 form a vertical structure, thereby exposing the openings on both sides of the feed hopper 204, which is convenient for sampling the mineral material to be crushed into the shell 202.

[0065] One end surface of the support frame 207 is fixedly connected to one end of the reinforcing plate 271. The other end of the reinforcing plate 271 is fixedly connected to the top surface of the base 201. The reinforcing plate 271, the support frame 207 and the base 201 form a right triangle structure, thereby improving the overall stability of the support frame.

[0066] The inner wall of the discharge barrel 203 slides in contact with the cleaning assembly 211. The cleaning assembly 211 is movably connected to the bottom end of the rotating shaft 208.

[0067] The cleaning assembly 211 includes a scraper bar 2111, a connecting rod 2112, a collar 2113, a half bolt 2114, a movable cavity 2115, and a limiting plate 2116. The movable cavity 2115 is recessed at the bottom end of the rotating shaft 208. The limiting plate 2116 is slidably sleeved in the movable cavity 2115. One end of the limiting plate 2116 is fixedly connected to the half bolt 2114. The half bolt 2114 is sleeved in the movable cavity 2115 through a threaded structure. The half bolt 2114 is rotatably sleeved on the side of the collar 2113 away from the movable cavity 2115. The peripheral outer wall of the collar 2113 is fixedly connected to a plurality of connecting rods 2112. The ends of the connecting rods 2112 away from the collar 2113 are respectively fixedly connected with scraper bars 2111. The scraper bars 2111 slide in contact with the inner wall of the discharge barrel 203. The discharge barrel 203 is a trumpet-shaped structure. One end surface of the scraper bar 2111 is fixedly connected with a brush, and the brush is in sliding contact with the inner wall of the discharge barrel 203 .

[0068] Working process: when in use, the servo motor 206 is powered on, and the transmission belt 210 drives the rotating shaft 208 to rotate. The rotating shaft 208 drives several fixed crushing hammers 209 to rotate in the inner circumference of the shell 202, and then the cover plate 205 is opened to put the ore sample to be crushed from the feed hopper 204. When the cover plate 205 is opened, it moves toward the center of the feed hopper 204 through the pull groove 251. The guide pillars 252 close to each other first move downward along the vertical direction of the guide slide groove 241, and the other guide pillars 252 move in the transverse direction of the guide slide groove 241, thereby driving the two cover plates 205 to move toward the inner side of the feed hopper 204. After the guide pillars 252 moving in the transverse direction of the guide slide groove 241 move to the end of the guide slide groove 241, the two cover plates 205 form a vertical structure, thereby exposing the openings on both sides of the feed hopper 204, which is convenient for putting the ore sample to be crushed into the shell 202. It falls into the shell 202 under the action of gravity, and then is crushed by several circularly rotating crushing hammers 209. The crushed mineral sample is finally discharged and collected from the discharge barrel 203. When the crushing work is completed, the servo motor 206 is stopped first, and the cleaning component 211 is operated by a tool to fix the cleaning component 211 with the rotating shaft 208. During operation, the tool tightens the half bolt 2114 of the cleaning component 211, and the half bolt 2114 moves toward the rotating shaft 208, thereby pressing the collar 2113. After the collar 2113 is pressed against the rotating shaft 208 by friction, the servo motor 206 is started again to drive the rotating shaft 208 to rotate, and the rotating shaft 208 drives the cleaning component 211 to rotate in a circle. The cleaning component 211 then cleans the mineral material attached to the inner wall of the discharge barrel 203 to avoid residual material inside the discharge barrel 203, prevent it from affecting the next use, and prevent residual material from affecting the operation of the machine.

[0069] The present invention can also be provided with a special cleaning system, which is composed of a gas storage tank, a cleaner, and a cleaning pipeline, and is mainly used to perform all-round cleaning on the reducer, conveyor belt, and storage metering bucket to remove residual mineral samples in the sampling equipment and improve the representativeness of the samples.

[0070] The present invention may also be provided with a dust collecting system, which is composed of a dust collector, a dust collecting pipe, and a dust collecting hood, and is mainly used to collect dust in all directions on the sample taking and preparation system to prevent dust from affecting the sample and the sample preparation environment.

[0071] The present invention can also be provided with a monitoring system to install a camera in the sampling and sample preparation area to perform 360-degree monitoring without blind spots.

Claims

1. A system for sampling and preparing waste tailings and waste rock bins in a lead-zinc ore dressing plant, characterized by: It comprises a sampling device, a sample preparation and sample separation device, and a sample disposal device connected in sequence; the sampling device comprises a sampling bucket, a sampling conveying belt, and a mineral sample elevator connected in sequence, the sampling bucket is installed at the unloading end of the discarding belt so as to move through the tailings flow at a uniform speed to intercept the full cross-section of the tailings flow for sampling, and then the mineral sample is transported to the sample preparation and sample separation device through the belt conveyor and the mineral sample elevator; the sample preparation and sample separation device comprises a first-level vibrating screen, a first-level crusher, a first-level reducer, a second-level vibrating screen, a second-level crusher, a fine crusher, a second-level reducer, a sample sampler, and a third-level reducer connected in sequence, the first-level reducer is a rotary reducer, the second-level reducer is a reciprocating reducer, and the third-level reducer is a quantitative reducer; The sampling device has an open front side of a sampling bucket (1), a bottom of the sampling bucket (1) fixedly connected to a bottom plate (2), four bottom corners of the bottom plate (2) fixedly connected to universal wheels, two sides of the top of the bottom plate (2) fixedly connected to rectangular plates (10), the front sides of the two rectangular plates (10) fixedly connected to a No. 1 electric telescopic rod (3), the telescopic ends of the two No. 1 electric telescopic rods (3) fixedly connected to an L-shaped plate, and the rear sides of the two L-shaped plates fixedly connected to the same door plate (17), the door plate (17) being arranged The front side of the sampling bucket (1), the waste disposal belt (5) is arranged above the rear side of the sampling bucket (1), the sampling conveyor belt (8) is arranged below the front side of the sampling bucket (1), the front sides of the bottom plate (2) are respectively fixedly connected with a cylinder (9) and a telescopic column, and the front side of the cylinder (9) and the fixed end of the telescopic column are both fixedly connected with a vertical plate (4); the four corners of the rear side of the door plate (17) are fixedly connected with a cylinder (16), and the front sides of the sampling bucket (1) are provided with circular grooves, and the outer side of the cylinder (16) is slidably connected to the inner wall of the circular groove; The sampling device is also provided with a cleaning mechanism, which is arranged in the sampling bucket (1) and is used to clean the inner wall of the sampling bucket (1); The sampling device is also provided with a shielding mechanism, which is arranged on the sampling conveying belt (8) and is used to shield dust and impurities; The sampling device is also provided with a metal removal component, which is arranged on the shielding mechanism and is used to remove metals in the ore.

2. The system according to claim 1, characterized in that: The cleaning mechanism comprises two motors (11), two connecting frames (12), a top plate (13), three springs (14) and a cleaning plate (15); the bottoms of the two connecting frames (12) are respectively fixedly connected to the top two sides of the same sampling bucket (1); the adjacent sides of the two connecting frames (12) are set as an open position; one side of the two motors (11) is respectively fixedly connected to the front sides of the two connecting frames (12); the output ends of the two motors (11) are fixedly connected to screw rods; one end of the two screw rods is respectively connected to the rear inner wall of the connecting frame (12) for rotation; The top plate (13) is connected by a screw thread on both sides, one end of each of the three springs (14) is fixedly connected to the bottom of the top plate (13), the three springs (14) are sleeved on a circular telescopic rod, the fixed ends of each of the three circular telescopic rods are fixedly connected to the bottom of the top plate (13), the other ends of the three springs (14) and the telescopic ends of the three circular telescopic rods are fixedly connected to the top of the same cleaning plate (15), the interior of the sampling hopper (1) is arranged as an inclined surface, and the bottom of the cleaning plate (15) is arranged in a shape that matches the inclined surface.

3. The system according to claim 1, characterized in that: The shielding mechanism comprises a shielding cover (6), wherein the shielding cover (6) is arranged on the top of the sampling conveyor belt (8), the shielding cover (6) is located below the bottom plate (2), the front side of the shielding cover (6) is arranged as an open position, and the top of the shielding cover (6) is arranged with a rectangular hole; the top of the shielding cover (6) is fixedly connected to a collecting bucket (7), the collecting bucket (7) is located directly above the rectangular hole, the top of the shielding cover (6) is fixedly connected to a baffle plate (18), the rear side of the baffle plate (18) is fixedly connected to a No. 2 electric telescopic rod (19), the telescopic end of the No. 2 electric telescopic rod (19) is fixedly connected to a sealing cover, and the rear side of the sealing cover passes through the front side of the collecting bucket (7) and extends onto the rear inner wall of the collecting bucket (7).

4. The system according to claim 1, characterized in that: The metal removal component comprises two rectangular frames (20), the tops of the two rectangular frames (20) are both arranged to be open, connecting blocks are fixedly connected to both sides of the two rectangular frames (20), the tops of the four connecting blocks are slidably connected to the top inner wall of the same shielding cover (6), and a plurality of magnets are arranged on the bottom inner walls of the two rectangular frames (20).

5. The system according to claim 1, characterized in that: The fine crusher comprises a base (201), a housing (202) is fixedly mounted on one side of the top of the base (201), the top of the housing (202) is fixedly connected to a feed hopper (204), a transmission belt (210) is movably provided at the bottom of the feed hopper (204), one side of the transmission belt (210) is transmission-connected to the top of a rotating shaft (208), the other side of the transmission belt (210) is transmission-connected to a servo motor (206), the servo motor (206) is fixedly mounted on a support frame (207), the bottom end of the support frame (207) is fixedly connected to a rotating shaft (208), and the servo motor (206) is fixedly mounted on a rotating shaft (208). The other side of the top of the base (201); the rotating shaft (208) is rotatably arranged in the shell (202); the peripheral side of the rotating shaft (208) is fixedly connected to a plurality of crushing hammers (209); the bottom end of the rotating shaft (208) is rotatably connected to a bracket (212); the bracket (212) is fixedly installed at the bottom of the shell (202); the bottom end of the shell (202) is fixedly connected to a discharge barrel (203); the inner wall of the discharge barrel (203) is in sliding contact with a cleaning component (211); and the cleaning component (211) is movably connected to the bottom end of the rotating shaft (208).

6. The system according to claim 5, characterized in that: The feed hopper (204) is of a U-shaped structure. Two cover plates (205) are slidably provided on the top of the feed hopper (204). The cover plates (205) are symmetrically arranged. The inner walls on both sides of the feed hopper (204) are respectively concavely provided with guide grooves (241). Guide columns (252) are slidably connected in the guide grooves (241). The guide columns (252) are respectively fixedly connected to the two sides of the cover plates (205). The guide grooves (241) are of an L-shaped structure and are symmetrically arranged. Four guide columns (252) are provided and are symmetrically arranged in pairs. The two cover plates (205) are respectively concavely provided with pull grooves (251) on the opposite sides of the same end surface.

7. The system according to claim 5, characterized in that: One end surface of the support frame (207) is fixedly connected to one end of the reinforcing plate (271), and the other end of the reinforcing plate (271) is fixedly connected to the top surface of the base (201).

8. The system according to claim 5, characterized in that: The cleaning assembly (211) comprises a scraper strip (2111), a connecting rod (2112), a collar (2113), a half bolt (2114), a movable cavity (2115), and a limiting plate (2116); the movable cavity (2115) is recessed at the bottom end of the rotating shaft (208); the limiting plate (2116) is slidably sleeved in the movable cavity (2115); one end of the limiting plate (2116) is fixedly connected to the half bolt (2114); the half bolt (2114) is sleeved in the movable cavity (2115) via a threaded structure; the half bolt (2114) A sleeve ring (2113) is rotatably connected to the side of the movable cavity (2114) away from the movable cavity (2115), and the peripheral outer wall of the sleeve ring (2113) is fixedly connected to a plurality of connecting rods (2112), and one end of the connecting rod (2112) away from the sleeve ring (2113) is fixedly connected to a scraper bar (2111), and the scraper bar (2111) is in sliding contact with the inner wall of the discharge barrel (203); the discharge barrel (203) is a trumpet-shaped structure, and one end face of the scraper bar (2111) is fixedly connected to a brush, and the brush is in sliding contact with the inner wall of the discharge barrel (203).

9. The system according to claim 1, characterized in that: It also includes a control system, which combines three control modes: automatic working mode, remote centralized mode, and manual mode to control sampling and sample preparation.

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