Full-automatic intelligent sampling machine

Abstract

The invention relates to the technical field of full-automatic sample preparation of coal and mineral products thereof in coal mines, power plants and ports, in particular to a full-automatic intelligent sample preparation machine. Comprising an incoming coal conveying unit A, a primary crushing unit B, a sample packaging and sending unit C, a sample preparation unit D, a quantitative division unit E, a secondary crushing unit F, a sample storage unit G, a sample drying unit H, a robot transfer unit I and an intelligent control unit J. Various devices for preparing coal samples are integrated, and the coal samples are prepared through a feasible technical route and a stable technological process. The coal sample preparation process is full-automatic and intelligent, so that the interference of human factors is greatly reduced, and the prepared coal sample can more accurately reflect the real components and value of a large batch of coal.

Description

Technical Field

[0001] The invention relates to the technical field of fully automatic sample preparation of coal mines, power plants, port coal and their minerals, and in particular to a fully automatic intelligent sample preparation machine. Background Art

[0002] The quality of coal in coal mines, power plants and ports determines the value and use of coal. It is particularly important to prepare and analyze large quantities of coal. Manual sample preparation often has many uncertainties and requires a high level of technical skills from operators. The randomness of sample preparation is very important. From the collected coal sample to the coal sample, it needs to go through a series of processes such as primary crushing-reduction-pre-drying-secondary crushing-reduction-drying-equal division-grinding and powder making. The stability of the sample preparation process is very important.

[0003] At present, coal samples are mainly made into three categories according to national standards: full water samples, storage samples and analysis samples. The particle size and water content of the three types of samples are different, and the amount to be provided is also different. For example, a full water sample with a particle size of 13mm needs to provide no less than 1.25 kg, a storage sample with a particle size of 3mm needs to provide no less than 0.7 kg, and an analysis sample with a particle size of 0.2mm needs to provide no less than 60 grams. After different coal samples are made, in order to ensure the reliability of the samples, a special coal sample collection device is required to collect and store the different coal samples for subsequent analysis.

[0004] Affected by a series of factors such as the operator's operating level and the instability of the sample preparation equipment, the small amount of coal samples produced cannot fully represent the true state and value of the large batch of coal. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a fully automatic intelligent sample making machine, which integrates various coal sample preparation equipment and divides them into a coal conveying unit A (including a sample binary division module A1 and a coal collection module A2), a primary crushing unit B, a sample packaging and sending unit C, a sample preparation unit D, a quantitative reduction unit E, a secondary crushing unit F, a sample storage unit G, a sample drying unit H (including a pre-drying module and an analytical sample drying module), a robot transfer unit I, and an intelligent control unit J. Through a practical technical route and a stable process flow, the coal sample preparation process is fully automatic and intelligent, which greatly reduces the interference of human factors, so that the prepared coal samples can more accurately reflect the true composition and value of large quantities of coal.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic intelligent sample preparation machine, comprising: a coal conveying unit A, a primary crushing unit B, a sample packaging and sending unit C, a sample preparation unit D, a quantitative reduction unit E, a secondary crushing unit F, a sample storage unit G, a sample drying unit H, a robot transport unit I, and an intelligent control unit J. The coal conveying unit A, the primary crushing unit B, the sample packaging and sending unit C, the sample preparation unit D, the quantitative reduction unit E, the secondary crushing unit F, the sample storage unit G, and the sample drying unit H are sequentially distributed around the robot transport unit I;

[0009] The robot transfer unit I is used to transfer the coal sample from one workflow to the next workflow;

[0010] Incoming coal conveying unit A: includes sample dichotomy module A1 and incoming coal collecting module A2; the incoming coal collecting module A2 conveys the coal sample and weighs and records it; the sample dichotomy module A1 divides the coal sample conveyed by the sample drying unit H into two parts;

[0011] Primary crushing unit B: used to crush the 13mm coal sample delivered from the coal conveying unit A by the robot transfer unit I into 6mm, and then weigh it;

[0012] The sample packaging and sending unit C is used to deliver, automatically package and mark the coal sample bottles sent by the robot transfer unit I;

[0013] The sample preparation unit D is used to grind the dried 3mm coal sample into a 0.2mm analysis coal sample through a grinding module. The robot continuously delivers the two coal samples made by the sample binary module A1 in the coal conveying unit A to the sample preparation unit D. The robot grinds the two coal samples in turn and finally makes two 0.2mm coal samples. After being bottled, the robot takes them out, weighs them, and sends them to the sample packaging and sending unit C.

[0014] Quantitative reduction unit E: includes a vibration feeding module and a quantitative reduction module; the vibration feeding module is used for feeding weighing, and the quantitative reduction module is used for separating coal samples and discarded materials, and transferring the discarded materials to the sample storage unit G;

[0015] Secondary crushing unit F: The secondary crushing unit F includes a belt conveyor and a crusher;

[0016] Sample storage unit G: includes collecting the spare abandoned coal samples of the quantitative reduction unit and the sample preparation unit D; and setting a secondary sampling station and an abandoned sample collection station, wherein the abandoned coal samples prepared each time are stored in a storage tank; when re-sampling is required, the storage tank rotates to the secondary sampling station, and the last abandoned samples are taken out at one time, and the barrel sweeping mechanism completely cleans the storage tank and weighs the re-taken samples; if secondary sampling is not required, the storage tank rotates to the abandoned sample collection station, and the coal samples in the storage tank are released, and the storage tank is cleaned at the same time; the robot weighs the coal samples transferred from the quantitative reduction unit and the sample preparation unit and pours them into the storage tank of the sample storage unit, and then the cleaning mechanism cleans the coal sample barrel to prevent coal sample residue and ensure that the loss rate meets the requirements;

[0017] Sample drying unit H: includes pre-drying module and analysis sample drying module;

[0018] The intelligent control unit J includes a host computer and a programmable controller (PLC). The sample preparation process is uniformly controlled by the host computer and the programmable controller (PLC). Robots are used to realize the transfer of coal samples between units, and complete the processes required by the process, such as loading, automatic weighing, iron removal, crushing, reduction, grinding, drying, sample collection, dust removal, cleaning, automatic packaging of coal samples, and recycling of discarded samples. The system runs stably and reliably, and the host computer operation sets management authority to separate operation, maintenance, and management.

[0019] Preferably, the sample binary separation module A1 includes a coal control unit cabinet, a vibrating feeder, a connecting hose, a binary separator, a binary coal drop pipe, and a coal sample bottle, and the coal collection module A2 includes a coal conveyor belt and a coal sample bucket.

[0020] Preferably, the primary crushing unit B includes a primary crushing unit cabinet, a belt conveyor, a first coal drop pipe, a crusher, a second coal drop pipe and a coal sample bucket.

[0021] Preferably, the sample packaging and sending unit C includes a sample packaging and sending unit cabinet, a coal sample bottle sending tube, a bottle cap storage device, a bottle cap grabbing and capping mechanism.

[0022] Preferably, the sample preparation unit D includes a sample preparation unit cabinet, a vibrating feeder hopper, an electromagnetic vibrator, a grinding and powder making module, a steel wire hose 1, a grinding and powder making module, a polarization motor assembly, a steel wire hose 2, a divider, and a coal sample bottle.

[0023] Preferably, the quantitative reduction unit E includes a vibration feeder storage bucket, a uniform material dropping device of the vibration feeder, a flexible connection one, a vibration material trough, an electromagnetic vibrator, a flexible connection two, a weighing module, a reduction ratio adjustment motor, a reduction rotating motor, a waste coal drop pipe vibrator, a reduction coal drop pipe vibrator, a reduction coal drop pipe, a waste coal drop pipe, a reduction coal sample barrel, a waste coal sample barrel, a coal sample barrel vibrator, and a quantitative reduction unit cabinet.

[0024] Preferably, the secondary crushing unit F also includes a secondary crushing unit cabinet, a first coal drop pipe, a second coal drop pipe and a coal sample bucket.

[0025] Preferably, the sample storage unit G includes a coal sample barrel cleaning motor, a coal storage tank cleaning mechanism 1, a coal storage tank cleaning mechanism 2, a storage tank, a coal storage tank bottom sealing mechanism, a coal storage tank bottom opening mechanism, a coal sample drop pipe, a discarded coal sample drop pipe, a discarded coal collection barrel, a coal sample collection barrel, a weighing mechanism 1, a weighing mechanism 2, a sample storage unit, a rotating motor, and a coal sample feed port.

[0026] Preferably, the pre-drying module includes a coal sample drying unit cabinet, a heating fan, a fan duct, a coal sample feed port, a coal sample drying trough, a heating module, a coal sample stirring device, and a chain drive device; the analysis sample drying module includes a heating fan, a coal sample feed port, a fan duct, a coal sample drying trough, a heating module, a coal sample stirring device, and a chain drive device.

[0027] (III) Beneficial effects

[0028] Compared with the prior art, the present invention provides a fully automatic intelligent sample making machine, which has the following beneficial effects:

[0029] This fully automatic intelligent sample making machine integrates various coal sample preparation equipment, and divides it into a coal conveying unit A (including a sample binary separation module A1 and a coal collection module A2), a primary crushing unit B, a sample packaging and sending unit C, a sample preparation unit D, a quantitative reduction unit E, a secondary crushing unit F, a sample storage unit G, a sample drying unit H (including a pre-drying module and an analytical sample drying module), a robot transfer unit I, and an intelligent control unit J. Through a practical technical route and a stable process flow, the coal sample preparation process is made fully automatic and intelligent, which greatly reduces the interference of human factors, so that the prepared coal samples can more accurately reflect the true composition and value of large quantities of coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structural layout of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the coal conveying unit A of the present invention;

[0032] Figure 3This is a schematic diagram of the structure of the primary crushing unit B of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the sample packaging and sending unit C of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the sample preparation unit D of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the quantitative reduction unit E of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the secondary crushing unit F of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the sample storage unit G of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the sample drying unit H of the present invention;

[0039] Fig.10 It is a schematic diagram of the operation process of the present invention.

[0040] Markings in the attached figure: A11, coal control unit cabinet; A12, vibrating feeder; A13, connecting hose; A14, two-split device; A15, two-split coal drop pipe; A16, coal sample bottle; A21, coal conveyor belt, A22 coal sample barrel; DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example:

[0043] See also Figure 1-10 , a fully automatic intelligent sample making machine, comprising: a coal conveying unit A, a primary crushing unit B, a sample packaging and sending unit C, a sample preparation unit D, a quantitative reduction unit E, a secondary crushing unit F, a sample storage unit G, a sample drying unit H, a robot transport unit I, and an intelligent control unit J. The coal conveying unit A, the primary crushing unit B, the sample packaging and sending unit C, the sample preparation unit D, the quantitative reduction unit E, the secondary crushing unit F, the sample storage unit G, and the sample drying unit H are sequentially distributed around the robot transport unit I;

[0044] The robot transfer unit I is used to transfer the coal sample from one workflow to the next workflow;

[0045] Incoming coal conveying unit A: includes sample dichotomy module A1 and incoming coal collecting module A2; the incoming coal collecting module A2 conveys the coal sample and weighs and records it; the sample dichotomy module A1 divides the coal sample conveyed by the sample drying unit H into two parts;

[0046] The sample binary module A1 includes a coal control unit cabinet A11, a vibrating feeder A12, a connecting hose A13, a binary separator A14, a binary coal drop pipe A15, and a coal sample bottle A16. The coal collection module A2 includes a coal conveyor belt A21 and a coal sample bucket A22.

[0047] Specifically, the incoming coal collection module conveys the coal sample to the coal sample bucket inside the incoming coal control unit through the sample conveyor belt conveyor. The coal load does not exceed 15kg at a time, and the particle size is not greater than 13mm. The coal sample bucket is placed on the weighing module to weigh and record the coal sample. Then the robot transfers the coal sample bucket to the next process flow;

[0048] The divider module divides the coal sample sent from the sample drying unit into two parts. The vibrating feeder evenly transfers the coal sample sent from the previous process to the divider. The divider consists of 8 slots, and the discharge ports of two adjacent slots are opposite. Slot material: stainless steel, mirror polished inner surface; the reciprocating motor drives the entire group of slots to reciprocate along the arrangement direction to ensure that the coal sample is evenly divided into two parts without difference. The slot width is 18mm, which is suitable for the reduction of coal samples with a diameter of less than 6mm. After the reduction is completed, the coal samples enter two coal sample collection buckets respectively, and are taken out and weighed by the robot and sent to the next process.

[0049] Primary crushing unit B: used to crush the 13mm coal sample delivered from the coal conveying unit A by the robot transfer unit I into 6mm, and then weigh it;

[0050] Specifically, the primary crushing unit B includes a primary crushing unit cabinet B1, a belt conveyor B2, a coal drop pipe B3, a crusher B4, a coal drop pipe B5 and a coal sample bucket B6. Furthermore, the crusher B4 can be a double-stage crusher.

[0051] Specifically, the robot transfers the coal sample from the coal control unit to the primary crushing unit, which mainly crushes the 13mm coal sample into 6mm. The robot slowly pours the 13mm coal sample into the feed hopper of the belt conveyor, and the coal conveyor conveyor evenly transports the coal sample to the crusher feed port through the stainless steel coal drop pipe through the belt conveyor. After being crushed by the double-stage hammer crusher, it enters the coal sample collection bucket; after the weighing module weighs the coal sample bucket, it is transferred to the next process by the robot.

[0052] The main performance of the belt conveyor: the speed of the belt conveyor is adjustable; a vibrator is installed on the side wall of the hopper to reduce the residual coal sample; a scraper is installed on the coal conveyor belt to scrape the spilled coal to the belt conveyor discharge port to reduce the probability of mixed samples; a high-strength magnet is installed above the coal conveyor belt to remove iron impurities mixed in the coal sample; it is equipped with a coal dispersion plate to shape the coal sample transported on the belt to make the coal conveying speed more uniform; a purge device is installed at the belt conveyor discharge port to remove the residual coal sample on the belt; the belt conveyor roller mounting hole is sealed to prevent coal powder from leaking out; a belt break detection device is installed to output an alarm.

[0053] The main performance of the double-stage crusher: the crusher shell has an inner cavity purge function to prevent coal sticking and residue in the crusher cavity and reduce cross contamination; it has a stall detection function; there is no coal storage, coal blockage or coal sticking in the crusher, and the vibration of the crusher is within the normal range.

[0054] The sample packaging and sending unit C is used to deliver, automatically package and mark the coal sample bottles sent by the robot transfer unit I;

[0055] Specifically, the sample packaging and sending unit C includes a sample packaging and sending unit cabinet C1, a coal sample bottle sending tube C2, a bottle cap storage device C3, and a bottle cap grabbing and capping mechanism C4;

[0056] Specifically, according to the process flow, the prepared coal sample bottles are sent by the robot to the sample packaging and sending unit C, and then transported to the sending module by the belt conveyor. After the sending module automatically packages and marks them, they are sent to the sample storage cabinet or other set destinations. The sample packaging and sending unit C requires operators to regularly and promptly replenish the sample bottle caps according to the system prompts.

[0057] Specifically, the sample preparation unit D includes a sample preparation unit cabinet D1, a vibrating feeder hopper D2, an electromagnetic vibrator D3, a grinding and powder making module D4, a steel wire hose 1 D5, a grinding and powder making module D6, a polarization motor assembly D7, a steel wire hose 2 D8, a divider D9, and a coal sample bottle D10;

[0058] The sample preparation unit D: The main function is to grind the dried 3mm coal sample into a 0.2mm analysis coal sample through the grinding module. The robot continuously delivers the two coal samples made by the sample binary module A1 in the coal conveying unit A to the sample preparation unit D. The robot grinds the two coal samples in turn and finally makes two 0.2mm coal samples. After being bottled, the robot takes them out, weighs them, and sends them to the sample packaging and sending unit C.

[0059] Specifically, the main function of the sample preparation unit is to make the dried 3mm coal sample into a 0.2mm analytical coal sample through the grinding module. This unit is mainly composed of a vibrating feeder module, a grinding and pulverizing module, and a divisor module. The robot continuously delivers two identical coal samples of about 200g made by the divisor module in the incoming coal control unit to the sample preparation unit. Pour it into the vibrating feeder, and the vibrating feeder evenly transports each coal sample to the grinding module. The vibration mode of the vibrating feeder is adjustable to put the vibrating feeder in the best conveying state; the coal sample is transported through the vibrating feeder and enters the grinding module through a steel wire hose. After being processed by the grinding module, the coal sample enters the divisor module through a steel wire hose and is evenly divided into two parts. The first 3mm dried coal sample sent by the robot is ground and pulverized and then sent to the sample storage module. This pulverization is mainly used to clean the residual samples from the previous sample preparation in the sample preparation unit system to prevent mixing of the current sample preparation and affect the purity of the current sample. At this time, the robot continues to grind and prepare the second 200g 3mm coal sample according to the previous process, and finally makes two 0.2mm coal samples, which are respectively put into coal sample bottles. The robot takes them out, weighs them, and then sends them to the sample packaging and sending unit C.

[0060] Vibrating feeder performance: Structural material in contact with coal sample: stainless steel, coal sample contact surface is mirror polished; there is a compressed air cleaning hole to remove surface residues.

[0061] Vibrator vibration frequency: adjustable

[0062] Grinding module: The inside of the grinding module is wear-resistant, high-temperature-resistant and corrosion-resistant. There is no accumulation, adhesion, leakage or influence on the composition of the sample inside the module that contacts the coal sample.

[0063] The grinding module is directly connected to the polarization motor, and the grinding is efficient. The grinding module and the sample preparation unit are isolated by shock absorption and buffering, which reduces the vibration and noise of the sample preparation unit. The whole machine and vibration equipment have a long service life and are easy to maintain.

[0064] The divisor module is the same as the coal control unit.

[0065] Quantitative reduction unit E: consists of a vibration feeding module and a quantitative reduction module; the vibration feeding module is used for feeding weighing, and the quantitative reduction module is used for coal sample and waste material separation, and the waste material is transmitted to the sample storage unit G;

[0066] Specifically, the quantitative reduction unit E includes a vibration feeder storage bucket E1, a uniform material dropping device E2 of the vibration feeder, a flexible connection 1 E3, a vibration trough E4, an electromagnetic vibrator E5, a flexible connection 2 E6, a weighing module E7, a reduction ratio adjustment motor E8, a reduction rotating motor E9, a waste coal drop pipe vibrator E10, a reduction coal drop pipe vibrator E11, a reduction coal drop pipe E12, a waste coal drop pipe E13, a reduction coal sample barrel E14, a waste coal sample barrel E15, a coal sample barrel vibrator E16, and a quantitative reduction unit cabinet E17.

[0067] Specifically, the robot transfers the coal sample barrel to the storage hopper of the vibrating feeder. The vibrating feeder is equipped with a weighing module to weigh and measure the poured coal sample and calculate the weight of the coal sample. After the material is dropped, the weighing module outputs a control signal. The storage hopper can load the coal sample poured into the coal sample barrel at one time. The storage hopper has a uniform dropping device, which allows the coal sample to slowly enter the vibration trough and slowly fall into the feed port of the reducer during the high-frequency movement of the vibrator. After passing through the reducer, the coal sample enters the coal sample collection (bottle) barrel and the waste coal sample collection barrel respectively. The bottom of the coal sample collection (bottle) barrel is equipped with a vibrating flattening device to prevent the coal sample from overflowing from the bottle when dropping. After the waste sample collection barrel is dropped, it is weighed and then transferred to the sample storage unit by the robot. After the coal sample collection (bottle) barrel is dropped, it is transferred to the weighing station by the robot, and sent to the next process after the metering is completed.

[0068] Main performance of vibrating feeder: the storage hopper is equipped with a vibrator, and the storage hopper is equipped with a shock absorbing device; the vibrating feeding chute under the storage hopper is equipped with a vibrator with adjustable vibration frequency; it can accurately determine whether all coal samples have entered the reducer to avoid coal sample residue and loss.

[0069] The storage hopper and the vibrating trough, as well as the dropping port of the vibrating trough and the feeding port of the reducer are connected with PU flexible connectors, which have a smooth surface and reduce coal sample residue.

[0070] Main performance of the divider:

[0071] The reducer reduces the sample into two or more pre-reserved samples that meet the requirements according to the reduction ratio specified in the standard. The mechanical reducer meets the precision and equipment requirements of GB / T 19494.2-2004 "Mechanized Sampling of Coal Part 2: Preparation of Coal Samples" and GB / T474-2008 "Preparation Methods of Coal Samples".

[0072] The reduction unit adopts the national standard method of rotary throwing type reduction device to reduce the volume shrinkage of coal samples and increase the number of cutting times. Rotary reduction makes the coal flow wider and the volume shrinkage of coal samples is small during rectification, which is conducive to completing the reduction.

[0073] The reduction unit adopts the national standard method to reduce the volume shrinkage of coal samples and increase the number of cutting times. It enhances the adaptability to wet and sticky coal. The uniform speed full-section cutting ensures no particle size segregation and high reduction precision.

[0074] The inside of the reducer is completely sealed to prevent dust from spilling out during the reduction process and reduce errors. The reduction ratio can be adjusted according to the process requirements and is precisely controlled by a stepper motor. The reduction drop pipe is equipped with an observation port for easy inspection and observation.

[0075] Secondary crushing unit F: The secondary crushing unit F includes a belt conveyor F2 and a crusher F4;

[0076] Specifically, the secondary crushing unit F also includes a secondary crushing unit cabinet F1, a coal drop pipe F3, a coal drop pipe F5 and a coal sample bucket F6.

[0077] Specifically, the robot transfers the ≤6mm coal sample barrel to the feed hopper of the belt conveyor, slowly pours the coal sample into the feed hopper, and sets a vibrator in the feed hopper to prevent the coal sample from remaining; the belt conveyor evenly transports the coal sample to the crusher feed port. The belt conveyor discharge port and the crusher feed port are connected with a stainless steel coal drop pipe, which is equipped with a vibrator to prevent the coal sample from remaining. The coal sample processed by the crusher is less than 3mm. After being measured by the weighing module, it is transferred to the next process by the robot.

[0078] The main performance of the belt conveyor: the speed of the belt conveyor is adjustable; a vibrator is installed on the side wall of the hopper to reduce the residual coal sample; a scraper is installed on the coal conveyor belt to scrape the spilled coal to the belt conveyor discharge port to reduce the probability of mixed samples; a high-strength magnet is installed above the coal conveyor belt to remove iron impurities mixed in the coal sample; it is equipped with a coal dispersion plate to shape the coal sample transported on the belt to make the coal conveying speed more uniform; a purge device is installed at the belt conveyor discharge port to remove the residual coal sample on the belt; the belt conveyor roller mounting hole is sealed to prevent coal powder from leaking out; a belt break detection device is installed to output an alarm.

[0079] Main performance of the crusher: The crusher is a single-stage crusher, with a feed size of ≤6MM, a hammer crusher, and a 3mm screen filter at the discharge port to ensure that the crusher discharge size is no larger than 3mm. The crusher shell has an inner cavity purge function to prevent coal from sticking and residue in the crusher cavity, reducing cross contamination; it has a stall detection function; the crusher has no coal storage, no coal blocking or coal sticking, and the vibration of the crusher does not exceed the standard.

[0080] Specifically, the sample storage unit G includes a coal sample barrel cleaning motor G1, a coal storage tank cleaning mechanism 1 G2, a coal storage tank cleaning mechanism 2 G3, a storage tank G4, a coal storage tank bottom sealing mechanism G5, a coal storage tank bottom opening mechanism G6, a coal sample drop pipe G7, a discarded coal sample drop pipe G8, a discarded coal collecting barrel G9, a coal sample collecting barrel G10, a weighing mechanism 1 G11, a weighing mechanism 2 G12, a sample storage unit G13, a rotating motor G14, and a coal sample feed port G15.

[0081] Sample storage unit G: includes collecting the spare abandoned coal samples of the quantitative reduction unit and the sample preparation unit D; it consists of 6 independent storage tanks, evenly distributed on the turntable, driven by a motor reducer, and controlled by a precise position switch. The tank body is made of stainless steel, with a straight-cylinder structure. The tank body is placed vertically, with feeding from the upper port and discharging from the lower port; and a secondary sampling station and a discarded sample collection station are set, and the abandoned coal samples prepared each time are stored in a storage tank; when re-sampling is required, the storage tank rotates to the secondary sampling station, and the last discarded sample is taken out at one time. The sweeping bucket mechanism completely cleans the storage tank and weighs the re-taken sample; if secondary sampling is not required, the storage tank rotates to the discarded sample collection station, releases the coal sample in the storage tank, and cleans the storage tank at the same time; the robot weighs the coal sample transferred from the quantitative reduction unit and the sample preparation unit and pours it into the storage tank of the sample storage unit, and then the cleaning mechanism cleans the coal sample barrel to prevent coal sample residue and ensure that the loss rate meets the requirements;

[0082] Sample drying unit H: includes a pre-drying module and an analytical sample drying module; specifically, the pre-drying module includes a coal sample drying unit cabinet H1, a heating fan H2, a fan duct H3, a coal sample feed port H4, a coal sample drying trough H5, a heating module H6, a coal sample stirring device H7, and a chain drive device H8; the analytical sample drying module includes a heating fan H9, a coal sample feed port H10, a fan duct H11, a coal sample drying trough H12, a heating module H13, a coal sample stirring device H14, and a chain drive device H15.

[0083] Specifically, the spaces where the two drying modules are located are relatively independent and sealed, and do not affect each other. The inner surface of the drying unit shell is covered with heat insulation material to save energy and keep warm.

[0084] Main performance of the pre-drying module: It is composed of multiple groups of independently controlled coal sample drying troughs. The trough is made of stainless steel, and the part in contact with the coal sample is mirror-polished. A heating module is installed at the bottom of the trough to heat the bottom of the coal sample drying trough; each trough is equipped with an independent coal sample stirring device, which can flip the coal sample in the trough up and down and stir it back and forth. The stirring device is driven by a chain sprocket, which has stable operation and low failure rate, and is conducive to the evaporation of moisture in the coal sample. A high-power heating fan and a temperature detection sensor are installed in the sealed space of the drying module, which can quickly heat the air in the environment to the set temperature. A pipe for exchanging air with the outside world is set in the closed space to quickly discharge the moisture evaporated by drying in the control. When the coal sample in the trough reaches the predetermined drying effect, the trough is turned over under the precise drive of the electric push rod, and the coal sample is poured from the trough into the coal sample bucket. The robot transports the coal sample bucket to the weighing station and enters the next process after the weighing is completed.

[0085] Main performance of analytical sample drying module: It is composed of multiple groups of independently controlled coal sample drying troughs. The trough is made of stainless steel, and the part in contact with the coal sample is mirror-polished. A heating module is installed at the bottom of the trough to heat the bottom of the coal sample drying trough; each trough is equipped with an independent coal sample stirring device, which can flip the coal sample in the trough up and down and stir it back and forth. The stirring device is driven by a chain sprocket, which has stable operation and low failure rate, and is conducive to the evaporation of moisture in the coal sample. A high-power heating fan and a temperature detection sensor are installed in the sealed space of the drying module, which can quickly heat the air in the environment to the set temperature. A pipe for exchanging air with the outside world is set in the closed space to quickly discharge the moisture evaporated by drying in the control. When the coal sample in the trough reaches the predetermined drying effect, the trough is turned over under the precise drive of the electric push rod, and the coal sample is poured from the trough into the coal sample bucket. The robot transports the coal sample bucket to the weighing station and enters the next process after the weighing is completed.

[0086] The intelligent control unit J includes a host computer and a programmable controller (PLC). The sample preparation process is uniformly controlled by the host computer and the programmable controller (PLC). A robot is used to realize the transfer of coal samples between units, and complete the processes required by the process, such as loading, automatic weighing, iron removal, crushing, reduction, grinding, drying, sample collection, dust removal, cleaning, automatic packaging of coal samples, and recycling of discarded samples. The system runs stably and reliably, and the host computer operation sets management authority to separate operation, maintenance, and management. The intelligent control unit J can be set into two groups, including intelligent control unit J1 and intelligent control unit J2.

[0087] The system can automatically adjust the reduction ratio according to the weight of the incoming materials to achieve fixed-weight reduction. The prepared coal samples can be weighed and labeled. The coal samples are bottled, and the sample bottles are labeled with radio frequency chips. The labels are unique, ensuring that the coal samples can be correctly read during the circulation process. The prepared coal sample transmission device is transmitted from the sample delivery unit to the fully automatic storage and inspection room to achieve point-to-point transmission. The entire process is fully automated, fully enclosed, and unmanned.

[0088] The fully automatic sample preparation machine is equipped with a manual coal sampling feed port. The manual coal sampling feed port can process 20-100kg of coal samples at a time. The manual coal sampling feed port can process coal samples with a nominal maximum particle size of 50mm, and the feed port is set with permissions to avoid human interference. Before preparing coded offline samples, the sample information can be scanned by a handheld scanner, and there is a sample sorting function. Before preparing uncoded offline samples, the coal information can be manually input and the coding can be applied to the intelligent centralized coal control system, and the coding fed back by the intelligent centralized coal control system can be accepted.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fully automatic intelligent sample making machine, characterized in that: include: Incoming coal conveying unit A, primary crushing unit B, sample packaging and sending unit C, sample preparation unit D, quantitative reduction unit E, secondary crushing unit F, sample storage unit G, sample drying unit H, robot transport unit I, intelligent control unit J, incoming coal conveying unit A, primary crushing unit B, sample packaging and sending unit C, sample preparation unit D, quantitative reduction unit E, secondary crushing unit F, sample storage unit G, sample drying unit H are sequentially distributed around the robot transport unit I; The robot transfer unit I is used to transfer coal samples from one workflow to the next workflow; Incoming coal conveying unit A: includes sample dichotomy module A1 and incoming coal collecting module A2; the incoming coal collecting module A2 conveys the coal sample and weighs and records it; the sample dichotomy module A1 divides the coal sample conveyed by the sample drying unit H into two parts; Primary crushing unit B: used to crush the 13mm coal sample delivered from the coal conveying unit A by the robot transfer unit I into 6mm, and then weigh it; Sample packaging and sending unit C: used to deliver, automatically package and label the coal sample bottles sent by the robot transfer unit I; Sample preparation unit D: used to grind the dried 3mm coal sample into 0.2mm analysis coal sample through the grinding module. The robot continuously delivers the two coal samples made by the sample binary module A1 in the coal conveying unit A to the sample preparation unit D. The robot grinds the two coal samples in turn and finally makes two 0.2mm coal samples. After being bottled, the robot takes them out, weighs them, and sends them to the sample packaging and sending unit C. Quantitative reduction unit E: includes a vibration feeding module and a quantitative reduction module; the vibration feeding module is used for feeding weighing, and the quantitative reduction module is used for separating coal samples and discarded materials, and transferring the discarded materials to the sample storage unit G; Secondary crushing unit F: The secondary crushing unit F includes a belt conveyor (F2) and a crusher (F4); Sample storage unit G: includes collecting the spare abandoned coal samples of the quantitative reduction unit and the sample preparation unit D; and setting a secondary sampling station and an abandoned sample collection station, wherein the abandoned coal samples prepared each time are stored in a storage tank; when re-sampling is required, the storage tank rotates to the secondary sampling station, and the last abandoned samples are taken out at one time, and the barrel sweeping mechanism completely cleans the storage tank and weighs the re-taken samples; if secondary sampling is not required, the storage tank rotates to the abandoned sample collection station, and the coal samples in the storage tank are released, and the storage tank is cleaned at the same time; the robot weighs the coal samples transferred from the quantitative reduction unit and the sample preparation unit and pours them into the storage tank of the sample storage unit, and then the cleaning mechanism cleans the coal sample barrel to prevent coal sample residue and ensure that the loss rate meets the requirements; Sample drying unit H: includes pre-drying module and analysis sample drying module; Intelligent control unit J: includes a host computer and a programmable controller (PLC); the sample preparation process is uniformly controlled by the host computer and the programmable controller (PLC), and a robot is used to realize the transfer of coal samples between units, completing the processes required by the process, such as loading, automatic weighing, iron removal, crushing, reduction, grinding, drying, sample collection, dust removal, cleaning, automatic packaging of coal samples, and recycling of discarded samples. The system runs stably and reliably, and the host computer operation sets management authority to separate operation, maintenance, and management.

2. The fully automatic intelligent sample making machine according to claim 1 is characterized in that: The sample binary separation module A1 includes a coal control unit cabinet (A11), a vibrating feeder (A12), a connecting hose (A13), a binary separator (A14), a binary coal drop pipe (A15), and a coal sample bottle (A16); the coal collection module A2 includes a coal conveyor belt (A21) and a coal sample bucket (A22).

3. The fully automatic intelligent sample making machine according to claim 2 is characterized in that: The primary crushing unit B comprises a primary crushing unit cabinet (B1), a belt conveyor (B2), a first coal drop pipe (B3), a crusher (B4), a second coal drop pipe (B5) and a coal sample bucket (B6).

4. The fully automatic intelligent sample making machine according to claim 3 is characterized in that: The sample packaging and sending unit C comprises a sample packaging and sending unit cabinet (C1), a coal sample bottle sending tube (C2), a bottle cap storage device (C3), and a bottle cap grabbing and capping mechanism (C4).

5. The fully automatic intelligent sample making machine according to claim 4 is characterized in that: The sample preparation unit D comprises a sample preparation unit cabinet (D1), a vibrating feeder hopper (D2), an electromagnetic vibrator (D3), a grinding and powder making module (D4), a steel wire hose 1 (D5), a grinding and powder making module (D6), a polarization motor component (D7), a steel wire hose 2 (D8), a divider (D9), and a coal sample bottle (D10).

6. The fully automatic intelligent sample making machine according to claim 5 is characterized in that: The quantitative reduction unit E comprises a vibrating feeder storage hopper (E1), a uniform material dropping device (E2) of the vibrating feeder, a flexible connection 1 (E3), a vibrating trough (E4), an electromagnetic vibrator (E5), a flexible connection 2 (E6), a weighing module (E7), a reduction ratio adjustment motor (E8), a reduction rotating motor (E9), a discarded coal drop pipe vibrator (E10), a reduction coal drop pipe vibrator (E11), a reduction coal drop pipe (E12), a discarded coal drop pipe (E13), a reduction coal sample barrel (E14), a discarded coal sample barrel (E15), a coal sample barrel vibrator (E16), and a quantitative reduction unit cabinet (E17).

7. The fully automatic intelligent sample making machine according to claim 6 is characterized in that: The secondary crushing unit F also includes a secondary crushing unit cabinet (F1), a first coal drop pipe (F3), a second coal drop pipe (F5) and a coal sample bucket (F6).

8. The fully automatic intelligent sample making machine according to claim 7 is characterized in that: The sample storage unit G comprises a coal sample barrel cleaning motor (G1), a coal storage tank cleaning mechanism 1 (G2), a coal storage tank cleaning mechanism 2 (G3), a storage tank (G4), a coal storage tank bottom sealing mechanism (G5), a coal storage tank bottom opening mechanism (G6), a coal sample drop pipe (G7), a discarded coal sample drop pipe (G8), a discarded coal collection barrel (G9), a coal sample collection barrel (G10), a weighing mechanism 1 (G11), a weighing mechanism 2 (G12), a sample storage unit (G13), a rotating motor (G14), and a coal sample feed port (G15).

9. The fully automatic intelligent sample making machine according to claim 8, characterized in that: The pre-drying module comprises a coal sample drying unit cabinet (H1), a heating fan (H2), a fan duct (H3), a coal sample feeding port (H4), a coal sample drying trough (H5), a heating module (H6), a coal sample stirring device (H7), and a chain driving device (H8); the analytical sample drying module comprises a heating fan (H9), a coal sample feeding port (H10), a fan duct (H11), a coal sample drying trough (H12), a heating module (H13), a coal sample stirring device (H14), and a chain driving device (H15).

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