Automobile automatic sampling device and system

Abstract

The utility model provides an automobile automatic sampling device and system, which comprises a walking assembly, a primary belt conveyor, a primary weighing scale, a secondary belt conveyor and a secondary weighing scale, a sampling machine is arranged on the walking assembly, the primary belt conveyor is used for receiving materials collected by the sampling machine, and the secondary belt conveyor is used for receiving the materials collected by the secondary weighing scale. A first-stage divider and a first material receiving articulated chute communicated with the first-stage weighing scale are arranged on the first-stage belt conveyor, a second material receiving articulated chute for conveying materials to the second-stage belt conveyor is arranged at the tail end of the first-stage belt conveyor, and a multi-station sample collector is arranged below the first-stage weighing scale; the multi-station sample collector is provided with a plurality of sample collecting buckets and an identification recognition device capable of recognizing the bucket numbers of the sample collecting buckets, the sample collecting buckets are used for receiving materials falling from the first-stage weighing scale, and the bottom of the multi-station sample collector is provided with a third material receiving elephant trunk for conveying the materials in the sample collecting buckets to the second-stage belt conveyor; a second-stage divider and a fourth material receiving articulated chute communicated with a second-stage weighing scale are arranged on the second-stage belt conveyor; and a packaging machine is arranged below the second-stage weighing scale.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices in the metallurgical industry, and particularly relates to an automatic vehicle sampling device and system. Background Art

[0002] The metallurgical industry has a huge demand for raw fuels and involves many types of raw fuels. At present, vehicle transportation is still the main transportation method for the raw fuels of steel mills. To improve the sampling efficiency, automatic vehicle samplers are generally used to complete the sampling tasks for this type of transportation method. An automatic vehicle sampling system mainly consists of a sampling carriage, a sampling trolley, a primary belt, a secondary belt, a multi-station sample collector, a waste bin, a control system, etc. By issuing instructions through the control system, full-process automatic sampling can be achieved, which can greatly reduce the labor intensity of sampling personnel. However, there are still the following problems:

[0003] (1) The filling thickness of the materials in each area of the carriage is uneven, and it is quite common that the humidity conditions of the materials are different within a certain range. Generally, after the number of vehicle sampling points is set, the fluctuations in the incoming material state will cause large fluctuations in the sampling volume, resulting in either insufficient or overweight final reduced sample volume compared with the set value. The deviation is generally up to several hundred grams, and even exceeds one kilogram, with too large a deviation.

[0004] (2) When there are many sampling vehicle trips, to reduce the work intensity of sample collection and preparation, multiple vehicles usually need to form a batch of samples for the testing task. However, the current structure of the automatic vehicle sampling system for single-vehicle incoming sample reduction and packing is not applicable to the situation of multi-vehicle batch formation.

[0005] (3) In actual situations, it is relatively rare for the fleets of the same supplier to queue up for vehicle sampling in sequence at the same time. Generally, vehicles from different suppliers queue up for sampling in an interspersed manner according to the arrival time at the factory. According to the principle that each sample receiving bucket must ensure that one bucket corresponds to the materials from the same source during material receiving, the sample receiving buckets in the multi-station sample collector need to move back and forth frequently. Due to occasional sudden failures in the control system, that is, the computer program instructs a certain sample receiving bucket to run to the designated material receiving position, but this sample receiving bucket does not run to the designated position due to program failure. Instead, another bucket runs to the material receiving position. This causes the bucket position number displayed on the computer monitor not to match the bucket position number actually running to the designated position, resulting in samples of different qualities being collected into the same sample receiving bucket, causing sample mixing in the sample receiving bucket, resulting in a decrease in the quality of the originally high-grade raw fuel or an increase in the quality of the originally low-grade raw fuel. This situation will cause huge losses to the factory's benefits.

[0006] Therefore, it is necessary to design a new automatic vehicle sampling device to overcome the above problems. Summary of the Utility Model

[0007] The purpose of the present utility model is to overcome the defects of the prior art, and provide an automatic vehicle sampling device and system. The present utility model solves at least some problems in the prior art.

[0008] The present utility model is implemented as follows:

[0009] The present utility model provides an automatic vehicle sampling device, including a walking component, a primary belt conveyor, a primary weighing scale, a secondary belt conveyor, and a secondary weighing scale. A sampling machine is installed on the walking component. The primary belt conveyor is used to receive the materials collected by the sampling machine. A first receiving chute communicating with the primary weighing scale is installed on the primary belt conveyor. The primary weighing scale is located below the primary belt conveyor. A primary splitter for scraping the materials on the primary belt conveyor into the first receiving chute is also installed on the primary belt conveyor. A second receiving chute for sending the materials to the secondary belt conveyor is installed at the end of the primary belt conveyor. A multi-station sample collector is provided below the primary weighing scale. The multi-station sample collector is provided with a plurality of sample collection buckets and an identification recognition device capable of identifying the bucket numbers of the sample collection buckets. The sample collection buckets are used to receive the materials falling from the primary weighing scale. A third receiving chute for sending the materials in the sample collection buckets to the secondary belt conveyor is provided at the bottom of the multi-station sample collector. The secondary belt conveyor is located below the multi-station sample collector. The running direction of the secondary belt conveyor is perpendicular to that of the primary belt conveyor. A fourth receiving chute communicating with the secondary weighing scale is installed on the secondary belt conveyor. The secondary weighing scale is located below the secondary belt conveyor. A secondary splitter for scraping the materials on the secondary belt conveyor into the fourth receiving chute is also installed on the secondary belt conveyor. A packing machine is provided below the secondary weighing scale.

[0010] Further, the multi-station sample collector includes a rotating mechanism. The rotating shaft of the rotating mechanism is arranged in the vertical direction, and each of the sample collection buckets is installed on the rotating mechanism.

[0011] Further, the sample collection buckets are evenly spaced along the circumferential direction of the rotating mechanism.

[0012] Further, a waste bin is provided at the end of the secondary belt conveyor.

[0013] Further, the identification recognition device uses a camera.

[0014] The present utility model also provides an automatic vehicle sampling system, including a sampling room and the above-mentioned automatic vehicle sampling device. The automatic vehicle sampling device is installed in the sampling room.

[0015] Further, the walking component is installed on the traveling beam at the top of the sampling room.

[0016] Further, the walking assembly includes a first walking mechanism and a second walking mechanism. The first walking mechanism is installed on the traveling beam at the top of the sampling room. The second walking mechanism is movably installed on the first walking mechanism, and the moving directions of the first walking mechanism and the second walking mechanism are perpendicular to each other.

[0017] Further, the sampling room is a two-story structure. A sample collection room and a tool room are provided on the first floor of the sampling room, and a control room is provided on the second floor of the sampling room. The packing machine is installed in the sample collection room.

[0018] The utility model has the following beneficial effects:

[0019] 1. The sampling amount of the utility model is controlled by two weighing devices, namely a primary weighing scale and a secondary weighing scale, which can largely avoid the problem of large fluctuations in sampling weight caused by different material thicknesses at various sampling points in the carriage or different material humidities within a certain range.

[0020] 2. The automatic vehicle sampling device provided by the utility model is applicable to both the situation of collecting single-vehicle samples and the situation of collecting multi-vehicle samples, with a wider scope of application.

[0021] 3. In the utility model, the materials collected by the sampling head enter the sample collection bucket for temporary storage after primary reduction, and only when the batch of vehicle numbers is full will they continue to enter the secondary belt conveyor for secondary reduction and then be weighed and packed. By temporarily storing the materials in the sample collection bucket and not performing secondary reduction and packing immediately, various factors affecting the instability of the batch of vehicle numbers on the same day can be more directly solved, thereby coping with the complex environment of the steel plant with complicated incoming vehicle situations.

[0022] 4. In the utility model, an identification recognition device is provided at the designated receiving position. By using the identification recognition device to determine in real time whether the actually arrived sample collection bucket is consistent with the sample collection bucket indicated by the control system, the phenomenon of bucket mixing can be eliminated. The identification recognition device is fixed on the multi-station sample collector and can be directly opposite to the sample collection bucket directly below the primary weighing scale. The utility model can better solve the problem of sample collection bucket mixing in the case of batch sampling. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a first-floor plan view of the sampling room provided by the embodiment of the present utility model;

[0025] Figure 2 The second - floor plan of the sampling room provided by the embodiment of the present utility model;

[0026] Figure 3 The 1 - 1 sectional view of the sampling room provided by the embodiment of the present utility model;

[0027] Figure 4 Provided by the embodiment of the present utility model Figure 3 The enlarged view at the lower left corner;

[0028] Figure 5 Provided by the embodiment of the present utility model Figure 4 The schematic diagram of the identification recognition device installed on the multi - station sample collector;

[0029] Figure 6 The 2 - 2 sectional view of the sampling room provided by the embodiment of the present utility model;

[0030] Figure 7 Provided by the embodiment of the present utility model Figure 5 The partial enlarged view on the left side.

[0031] In the figure: sampling trolley 1, sampling cart 2, primary belt conveyor 3, primary sample divider 4, primary weighing scale 5, multi - station sample collector 6, secondary belt conveyor 7, secondary sample divider 8, secondary weighing scale 9, packing machine 10, waste bin 11, sampling room 12, delivery truck 13, sampler 14, material temporary storage hopper 15, material carriage 16, control room 17, sample collection room 18, tool room 19, first material receiving chute 20, second material receiving chute 21, third material receiving chute 22, fourth material receiving chute 23, packing belt 24, car stopper 25, vehicle entry direction 26, identification recognition device 27, sample collection bucket 28. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0034] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present utility model, unless otherwise specified, the meaning of "a number of" is two or more than two.

[0035] As Figures 1-7 , Embodiment 1 of the present utility model provides an automatic vehicle sampling device, which includes a traveling assembly, a primary belt conveyor 3, a primary weighing scale 5, a secondary belt conveyor 7, and a secondary weighing scale 9. A sampler 14 is installed on the traveling assembly. The primary belt conveyor 3 is used to receive the materials collected by the sampler 14. A first receiving chute 20 communicating with the primary weighing scale 5 is installed on the primary belt conveyor 3. The primary weighing scale 5 is located below the primary belt conveyor 3. A primary splitter 4 for scraping the materials on the primary belt conveyor 3 into the first receiving chute 20 is also installed on the primary belt conveyor 3. A second receiving chute 21 for sending the materials to the secondary belt conveyor 7 is installed at the end of the primary belt conveyor 3. A multi-station sample collector 6 is provided below the primary weighing scale 5. The multi-station sample collector 6 is provided with a number of sample buckets 28 and an identification recognition device 27 capable of identifying the bucket numbers of the sample buckets 28. The sample buckets 28 are used to receive the materials falling from the primary weighing scale 5. A third receiving chute 22 for sending the materials in the sample buckets 28 to the secondary belt conveyor 7 is provided at the bottom of the multi-station sample collector 6. The secondary belt conveyor 7 is located below the multi-station sample collector 6. The running direction of the secondary belt conveyor 7 is perpendicular to the running direction of the primary belt conveyor 3. A fourth receiving chute 23 communicating with the secondary weighing scale 9 is installed on the secondary belt conveyor 7. The secondary weighing scale 9 is located below the secondary belt conveyor 7. A secondary splitter 8 for scraping the materials on the secondary belt conveyor 7 into the fourth receiving chute 23 is also installed on the secondary belt conveyor 7. A packing machine 10 is provided below the secondary weighing scale 9.

[0036] Embodiment 2 of the present utility model provides an automatic vehicle sampling system. The automatic vehicle sampling system includes a sampling house 12. The above-mentioned automatic vehicle sampling device is installed in the sampling house 12. A feeding vehicle 13 sends the materials to be sampled into the sampling house 12, and the sampler 14 samples the materials in the material carriage 16 of the feeding vehicle 13. A control room 17 is provided on the second floor of the sampling house 12, and a sample collection room 18 and a tool room 19 are provided on the first floor. The tool room 19 is located directly below the control room 17. A car stopper 25 can be set outside the sampling house 12 as needed.

[0037] In this embodiment, the traveling assembly includes a sampling trolley 1 and a sampling cart 2. The sampling trolley 1 is located on the traveling beam at the top of the sampling chamber 12. The sampling trolley 1 can move along the length direction of the material carriage 16. The sampling cart 2 is installed on the sampling trolley 1 and can move along the width direction of the material carriage 16. A liftable sampling machine 14 is provided on the sampling cart 2. The sampling machine 14 is an existing device. The material collected by the sampling machine 14 is temporarily stored in the material temporary storage hopper 15 of the sampling machine 14. When the sampling machine 14 completes the specified number of samplings in the material carriage 16, the traveling assembly drives the material temporary storage hopper 15 to move to the receiving hopper at the head end of the first-stage belt conveyor 3. The material temporary storage hopper 15 is a hopper with an openable bottom. The material falling from the material temporary storage hopper 15 is sent to the first-stage belt conveyor 3 through the receiving hopper. Along the width direction of the first-stage belt conveyor 3, a first-stage splitter 4 is provided on one side of the first-stage belt conveyor 3, and a first receiving chute 20 is provided on the other side. The first-stage splitter 4 is an existing device. The sweeper of the first-stage splitter 4 sweeps the material on the first-stage belt conveyor 3 into the first receiving chute 20. The first receiving chute 20 is communicated with the first weighing scale 5. The material in the first receiving chute 20 falls onto the first weighing scale 5 for weighing. The first weighing scale 5 is an existing bottom-opening scale. When the weight of the material on the first weighing scale 5 reaches the set value, the bottom of the first weighing scale 5 opens, and the material on the first weighing scale 5 falls into the sampling bucket 28 of the multi-station sampling collector 6. The multi-station sampling collector 6 is an existing device. A number of sampling buckets 28 are provided on the multi-station sampling collector 6. The sampling bucket 28 has an openable bottom. The control system can control the rotation of the multi-station sampling collector 6. The sampling bucket 28 rotated to directly below the first weighing scale 5 is responsible for receiving the material. If several delivery trucks 13 belong to the same supplier, that is, the materials delivered by several delivery trucks 13 are the same, these several delivery trucks 13 form a batch, and the sampled materials are loaded into the same sampling bucket. For example, 5 delivery trucks 13 are a batch. When the sampled material of the 5th truck enters the sampling bucket 28, the bottom of the sampling bucket 28 opens. A third receiving chute 22 for sending the material to the second-stage belt conveyor 7 is provided at the bottom of the multi-station sampling collector 6. The material falling from the sampling bucket 28 falls onto the second-stage belt conveyor 7 through the third receiving chute 22. Along the width direction of the second-stage belt conveyor 7, a second-stage splitter 8 is provided on one side of the second-stage belt conveyor 7, and a fourth receiving chute 23 is provided on the other side. The second-stage splitter 8 is an existing device. The sweeper of the second-stage splitter 8 sweeps the material on the second-stage belt conveyor 7 into the fourth receiving chute 23. The fourth receiving chute 23 is communicated with the second weighing scale 9. The material in the fourth receiving chute 23 falls onto the second weighing scale 9 for weighing. The second weighing scale 9 is an existing bottom-opening scale. When the weight of the material on the second weighing scale 9 reaches the set value, the bottom of the second weighing scale 9 opens, and the material on the second weighing scale 9 falls into the packing machine 10 for packing. The packing machine 10 can be installed in the sampling chamber 18.

[0038] At the end of the secondary belt conveyor 7, there is a waste bin 11. The materials remaining on the secondary belt conveyor 7 after being scraped by the secondary sample divider 8 are sent into the waste bin 11 by the secondary belt conveyor 7.

[0039] The materials remaining on the primary belt conveyor 3 after being scraped by the primary sample divider 4 fall onto the secondary belt conveyor 7 through the second receiving chute 21 and are sent into the waste bin 11 by the secondary belt conveyor 7. The secondary sample divider 8 on the secondary belt conveyor 7 is not opened before the sampling bucket discharges (the bottom of the sampling bucket is opened). Since the primary weighing scale 5 takes time to weigh, and the sampling buckets of the multi-station sampler need to collect the materials of multiple vehicles from the same supplier before discharging, the materials in the sampling bucket fall onto the secondary belt conveyor 7 later than the remaining materials on the primary belt conveyor 3 falling onto the secondary belt conveyor 7, and there will be no situation of material mixing. When collecting samples from multiple vehicles of the same supplier, after the control system controls the sampling bucket to discharge, the secondary sample divider 8 is opened. The control principle of the control system for the sampling bucket and the secondary sample divider belongs to the prior art and will not be elaborated here.

[0040] When collecting samples from multiple vehicles of the same supplier, two-stage sample division using the primary sample divider 4 and the secondary sample divider 8 is required. If there is only one vehicle of materials from the same supplier, that is, when collecting a single-vehicle sample, the primary sample divider 4 can be not opened, and the materials directly fall onto the secondary belt conveyor 7 through the second receiving chute 21, and only the secondary sample divider 8 is used for sample division.

[0041] The primary belt conveyor 3, the primary weighing scale 5, the multi-station sampler 6, and the secondary belt conveyor 7 can be installed on the rack in the sampling room 12.

[0042] The automatic vehicle sampling device is controlled by an existing control system. The sampling truck 1, the sampling trolley 2, the primary belt conveyor 3, the primary sample divider 4, the primary weighing scale 5, the multi-station sampler 6, the secondary belt conveyor 7, the secondary sample divider 8, the secondary weighing scale 9, the packing machine 10, and the sampling machine 14 are all electrically connected to the control system. The control principle of the control system for each device and the involved control programs are all prior art and will not be elaborated here.

[0043] The automatic vehicle sampling device provided by the present utility model includes a sampling truck, a sampling trolley, a primary belt conveyor, a primary sample divider, a primary weighing scale, a multi-station sampler, a secondary belt conveyor, a secondary sample divider, a secondary weighing scale, a packing machine, a packing belt, a waste bin, and a control system. The usage method of the automatic vehicle sampling device includes the following steps:

[0044] (1) The feeding vehicle 13 is parked in the designated area, and the operator issues an instruction to start sampling.

[0045] (2) When the vehicle belongs to a different supplier from the previous vehicle, under the automatic program, first start the automatic cleaning function to clean the sampling head of the sampling machine and positions such as the conveyor belt.

[0046] (3) After sampling starts, the sampling head collects the material and temporarily stores it in the material temporary storage hopper 15. Sampling stops after the set number of sampling points is reached. The material in the material temporary storage hopper 15 enters the primary belt conveyor 3. The primary splitter 4 uses a scraper to scrape the material on the primary belt conveyor 3 into the primary weighing scale 5. When the weight measured by the primary weighing scale 5 reaches the set value, the scraping stops, and the material falls from the primary weighing scale 5 into the allocated sample collecting bucket 28. If the weight measured by the primary weighing scale 5 cannot reach the set value, the sampling head of the sampling machine 14 replenishes the sampling until the set value of the primary weighing scale 5 is reached. The remaining material on the primary belt conveyor 3 enters the secondary belt conveyor 7 through the second receiving chute 21 at the end of the primary belt conveyor 3, and then directly enters the waste bin 11.

[0047] (4) When the number of vehicles from the same supplier reaches the set batch vehicle number, after the last vehicle of material enters the same sample collecting bucket 28 according to the above steps, the control system prompts that the material in the sample collecting bucket can be batched. The bottom of the sample collecting bucket 28 is opened, and the material enters the secondary belt conveyor 7 through the third receiving chute 22.

[0048] (5) The secondary splitter 8 on the secondary belt conveyor 7 also uses belt scraping type splitting. The scraper of the secondary splitter 8 scrapes the above-mentioned material into the secondary weighing scale 9, and the scraping stops when the set value is reached. The secondary weighing scale 9 is a loss-in-weight scale. The material enters the packing machine 10 through the loss-in-weight scale and is packed into 2 specimens in sequence, one for manual chemical analysis and one for sample storage for future reference. The fallen material is automatically inkjet printed with labels after being packed by the packing machine, and the packed samples are conveyed to the sample temporary storage area through the packing belt 24. The samples are manually placed in the sample storage rack for temporary storage. The remaining material on the secondary belt conveyor 7 enters the waste bin 11 through the secondary belt conveyor 7.

[0049] (6) When there is only one vehicle of incoming samples from a certain supplier on the same day (that is, only one delivery truck 13 comes), the single vehicle sample directly enters the secondary belt conveyor 7 through the primary belt conveyor 3 (the single vehicle sample does not need to be split by the primary splitter 4), and then enters the secondary weighing scale 9 through the secondary splitter 8 and is packed into 2 specimens.

[0050] When the number of incoming delivery trucks 13 of a certain supplier on the same day does not meet the integer multiple of batch formation, the operator issues a batch formation instruction for the corresponding sample collecting bucket 28, and the materials in the sample collecting bucket 28 enter the secondary belt conveyor 7 through the chute. The secondary splitter 8 of the secondary belt conveyor 7 automatically adjusts the scraping frequency according to the weight of the materials in the sample collecting bucket 28 and the set weight value of the secondary weighing scale 9 to reach the set value, and then packs them into 2 test samples. That is, it starts with 5 delivery trucks 13 as a batch. If only 3 delivery trucks 13 come on the same day, the amount of materials entering the sample collecting bucket 28 becomes less, and the secondary splitter 8 increases the scraping frequency to scrape more materials onto the secondary weighing scale 9 until the set value of the secondary weighing scale 9 is reached. The control system adjusts the scraping frequency (increase the scraping times) of the secondary splitter 8 through the weight of the materials in the sample collecting bucket 28 and the set weight value of the secondary weighing scale 9. Its control principle belongs to the prior art and will not be elaborated here.

[0051] (8) In particular, when the control system randomly assigns a certain sample bucket 28 to collect the materials from the incoming vehicle of the same supplier, the sample bucket 28 needs to run to the designated position to receive the materials from the primary belt conveyor 7. An identification recognition device 27 is provided at the designated receiving position. By means of the identification recognition device 27, it can be judged in real time whether the actually arrived sample bucket is consistent with the sample bucket indicated by the control system to arrive, which can prevent the phenomenon of sample bucket mixing. The identification recognition device 27 is fixed on the multi-station sampler 6 and can be directly opposite to the sample bucket directly below the primary weighing scale 5. For example, it is set that 5 delivery trucks 13 of the same supplier are in one batch. The first delivery truck 13 is loaded with materials by the No. 2 sample bucket randomly assigned by the control system. The sampled materials of the subsequent 4 delivery trucks 13 should also be loaded into the No. 2 sample bucket. The 5 delivery trucks 13 may arrive at the sampling room 12 at different times. When other delivery trucks 13 arrive at the sampling room 12, the control system needs to control the No. 2 sample bucket to rotate to the position directly below the primary weighing scale 5 to receive the materials. Each sample bucket 28 on the multi-station sampler 6 is provided with a different identification. The identification recognition device 27 is used to judge whether the sample bucket 28 actually rotated to the position directly below the primary weighing scale 5 is the sample bucket designated by the control system (due to reasons such as program failure, the sample bucket designated by the control system may not have run to the position directly below the primary weighing scale 5 to receive the materials). The identification recognition device 27 transmits the identification information on the sample bucket 28 to the control system. If the sample bucket directly below the primary weighing scale 5 is the sample bucket designated by the control system, the primary weighing scale 5 can be controlled to discharge materials into the sample bucket; if the sample bucket directly below the primary weighing scale 5 is not the sample bucket designated by the control system, the control system controls the multi-station sampler 6 to continue rotating until the sample bucket designated by the control system rotates to the position directly below the primary weighing scale 5, effectively avoiding the phenomenon of sample bucket mixing and material mixing. A two-dimensional code label can be set on the sample bucket 28, and the two-dimensional code labels on different sample buckets are different. The identification recognition device 27 can be a two-dimensional code label recognition device. A digital number or other distinguishing marks can also be set on the sample bucket 28. The identification recognition device 27 uses a camera. The control system judges whether the sample bucket directly below the primary weighing scale 5 is the sample bucket designated by the control system according to the information transmitted back by the camera. Monitoring production with a camera is an existing technology with wide application and will not be elaborated here.

[0052] In the present utility model, in addition to controlling the amount of materials collected by the sampling head, the primary weighing scale 5 can also quantitatively weigh the total weight of the batch samples in each sample bucket 28, and can accurately guide the reduction frequency of the secondary splitter 8.

[0053] In the present utility model, the sample bucket 28 is arranged between the primary belt conveyor 3 and the secondary belt conveyor 7. The batch materials in each sample bucket 28 can be mixed by the secondary belt conveyor 7 and then packed (there is an existing material mixing device on the secondary belt conveyor 7). The two packed samples have better representativeness.

[0054] In the present utility model, the materials collected by the sampling head enter the sample collection bucket 28 for temporary storage after primary reduction, and only continue to enter the secondary belt conveyor 7 for secondary reduction and weighing and packing until the batch truck count is full. By temporarily storing the materials in the sample collection bucket 28 and not performing secondary reduction and packing for the time being, various factors with unstable batch truck counts on the same day can be more directly addressed, thereby coping with the complex steel mill environment with complicated incoming vehicle situations. For example, if 5 delivery trucks 13 from the same supplier are set as one batch, and only 3 delivery trucks 13 actually arrive on the same day, the sample collection bucket 28 finally only sends 3 truckloads of sampled materials to the secondary belt conveyor 7. The secondary reduction device 8 will increase the scraping frequency, scraping a little more material onto the secondary weighing scale 9 until the set value of the secondary weighing scale 9 is met.

[0055] Through the two - stage weighing of the primary weighing scale and the secondary weighing scale in the present utility model, the deviation of the sampling quantity can be controlled to the minimum to a great extent.

[0056] In the present utility model, the control system can automatically calibrate whether there is an error in the sample collection bucket 28 directly below the primary weighing scale 5, avoiding the occurrence of bucket - mixing situation.

[0057] In the present utility model, for the case of single - vehicle incoming samples or the need to collect single - vehicle samples, they can directly enter the secondary belt conveyor through the primary belt conveyor for reduction and packing, without the need to set up an additional bypass, and the structure is relatively simple.

[0058] The specific embodiments are as follows (for better illustration, taking 5 vehicle trips from the same source as 1 batch sample, and taking a three - sampling - point, six - station sample collector as an example. The six - station sample collector means there are 6 sample collection buckets 28 in the sample collector):

[0059] (1) The delivery truck 13 enters the sampling area, the vehicle engine is turned off, and the driver gets out of the vehicle.

[0060] (2) When the raw material sources of this vehicle and the previous vehicle are different (i.e., they belong to different suppliers), the automatic cleaning function is first started under the automatic program to clean the sampling head, conveyor belt, etc. Subsequently, sampling begins. The sampling head collects the material and temporarily stores it in the material temporary storage hopper 15. Sampling stops after reaching 3 sampling points set by the program. The material in the material temporary storage hopper 15 enters the primary belt conveyor 3. The primary splitter 4 sweeps the material on the primary belt 3 into the primary weighing scale 5 through a sweeper. When the set value (4.5 kg - 5 kg) is reached, the sweeping stops. The material falls from the primary weighing scale 5 into the randomly assigned sample collection bucket 28. If the weight measured by the primary weighing scale 5 cannot reach the set value, that is, the actual measured value of the primary weighing scale is less than 4.5 kg - 5 kg after 3 points are collected, the sampling head starts to re-sample. The sweeper on the primary splitter 4 automatically adjusts the sweeping frequency (number of sweeps) according to the amount of material on the primary weighing scale 5. When the amount of material on the primary weighing scale 5 reaches the set value, the primary splitter 4 stops sweeping, sampling stops, and the material falls from the primary weighing scale 5 into one of the sample collection buckets in the six-station sample collector randomly assigned by the control system, such as into the No. 2 sample collection bucket. The remaining material on the primary belt conveyor enters the secondary belt conveyor and then directly enters the waste bin.

[0061] (3) When the number of vehicles from the same supplier reaches 5, after the material of the 5th vehicle enters the No. 2 sample collection bucket according to the above steps, the control system prompts that the material in this sample collection bucket can be grouped. At this time, the control system will automatically record the total weight of the material in the No. 2 sample collection bucket, that is, the sum of the sampling amounts of 5 vehicles. At this time, the total weight of the material in the sample collection bucket should be within the range of 22.5 kg - 25 kg. Then the bottom of this sample collection bucket opens, and the material enters the secondary belt conveyor 7 through a chute.

[0062] (4) The secondary splitter 8 on the secondary belt conveyor 7 also uses belt sweeping type splitting. The sweeper sweeps the above material into the secondary weighing scale 9. When the set value of the secondary weighing scale 9 is reached, the sweeping stops. The secondary weighing scale 9 is a loss-in-weight scale. The material enters the packing machine through the loss-in-weight scale and is packed into 2 specimens in sequence, one for manual chemical analysis and one for sample storage for future reference. For example, the weight of each packed specimen is set at 2.5 kg, and the positive and negative deviation requirements do not exceed 0.1 kg. Therefore, the corresponding set value of the secondary weighing scale is 4.8 kg - 5.2 kg. The secondary sweeper automatically adjusts the sweeping frequency according to the weight of the material in the No. 2 sample collection bucket. After reaching the set value on the secondary weighing scale, the sweeping stops, and the material is packed into 2 specimens in sequence through the loss-in-weight scale. The falling material is automatically inkjet printed with labels after being packed by the packing machine, and the packed samples are conveyed to the sample temporary storage area through the packing belt 24. The samples are manually placed in the sample storage rack for temporary storage. The remaining material on the secondary belt conveyor 7 enters the waste bin 11 through the secondary belt conveyor 7.

[0063] (5) When there is only one truckload of incoming samples from the supplier on the same day, the single-truck samples directly enter the secondary belt conveyor 7 through the primary belt conveyor 3, and then enter the secondary weighing scale 9 through the secondary sample divider 8. When the secondary weighing scale 9 reaches the corresponding set value of 4.8 kg - 5.2 kg, the scraping stops, and then it enters the packing machine to be packed into 2 samples. The excess materials directly enter the waste bin 11.

[0064] (6) When the number of trucks from the supplier on the same day does not meet the integer multiple of batch formation, for example, there are only 3 truckloads of samples in the No. 2 sample collection bucket before the shift change on the same day, the operator issues a batch formation instruction for the samples in the No. 2 sample collection bucket, and the materials in the sample collection bucket enter the secondary belt conveyor 7 through the chute. The secondary sample divider 8 automatically adjusts the scraping frequency according to the total weight of the materials in the current sample collection bucket to meet the set value of the secondary weighing scale 9, and then it is packed into 2 samples.

[0065] (7) Specifically, before preparing for sampling, the control system instructs the No. 2 sample collection bucket to move to the designated position to receive materials, and the identification recognition device 27 collects the bucket number information and feeds it back to the control system. If the No. 2 sample collection bucket is in place, the materials enter the No. 2 sample collection bucket; if the bucket in place is not the No. 2 sample collection bucket, such as the No. 3 sample bucket, the control system instructs the sample collection buckets in the sampler to continue to rotate until the signal fed back by the identification recognition device 27 is the No. 2 sample collection bucket, then the sampling head can start sampling. That is, "sampling is not carried out when the bucket is not in place", which can prevent the phenomenon of sample bucket mixing.

[0066] (8) The multi-station sampler 6 can be a six-station, a ten-station or other multi-type stations, mainly composed of a rotating mechanism and several sample collection buckets 28, and each of the sample collection buckets 28 is installed on the rotating mechanism. For example, a six-station sampler means that there are 6 sample collection buckets 28 in the sampler, and a certain sample collection bucket can be randomly rotated to the designated position to receive materials according to the control system instruction.

[0067] (9) The fluctuations in the incoming material state are not limited to the uneven thickness of the materials at various parts of the material carriage 16 and the different material humidities within a certain range mentioned above, but also include various other factors affecting the incoming material state.

[0068] (10) The number of sampling points can be 1, 2, 3 or more.

[0069] (11) The secondary weighing scale is selected as a loss-in-weight scale to ensure that the amounts of the two samples are basically the same.

[0070] The utility model overcomes the problems of complex batch formation of vehicle sampling, large fluctuations in sampling volume and sample bucket cross-contamination, etc., and is applicable to the situations with diverse raw material sources and relatively complex sampling tasks, and has the following advantages:

[0071] (1) The present invention controls the sampling amount through a two-stage weighing device (a primary weighing scale 5 and a secondary weighing scale 9), which can largely avoid the problem of large fluctuations in sampling weight caused by different material thicknesses at different sampling points in the carriage or different material humidity within a certain range.

[0072] (2) When there are many sampling vehicles, multiple vehicles are usually used for testing. The utility model can solve various situations such as single vehicle batching, set vehicle batching, and vehicle batching that does not meet the set value, and can better respond to the complexity of the vehicle environment in the factory area.

[0073] (3) The utility model can better solve the problem of mixing materials in sample barrels under batch conditions.

[0074] (4) The multi-station sample collector is located between the primary and secondary belt conveyors. After the batch materials in the sample collecting barrel are evenly mixed and spread by the mixing device on the secondary belt conveyor, the mixing function of the batch samples has actually been realized. The two packaged samples are representative of the batch materials, and no additional mixing process is required when they are sent to the laboratory for sample preparation.

[0075] (5) Two samples are packed by a packing machine and have unique sample codes, which are airtight and highly secure. The samples for inspection can be stored on site, and only one sample needs to be sent to the laboratory. The sample bags do not need to be transported back and forth, saving human resources.

[0076] (6) The utility model is suitable for automatic sampling of various raw materials and fuels such as pulverized coal, sintering coal, coke, iron ore concentrate, and fine ore.

[0077] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic vehicle sampling device, characterized in that: It includes a walking component, a primary belt conveyor, a primary weighing scale, a secondary belt conveyor, and a secondary weighing scale. A sampler is installed on the walking component. The primary belt conveyor is used to receive the materials collected by the sampler. A first receiving chute communicating with the primary weighing scale is installed on the primary belt conveyor. The primary weighing scale is located below the primary belt conveyor. A primary riffle is also installed on the primary belt conveyor to scrape the materials on the primary belt conveyor into the first receiving chute. A second receiving chute for sending the materials to the secondary belt conveyor is installed at the end of the primary belt conveyor. A multi-station sample collector is provided below the primary weighing scale. The multi-station sample collector is provided with a number of sample buckets and an identification recognition device capable of identifying the bucket numbers of the sample buckets. The sample buckets are used to receive the materials falling from the primary weighing scale. A third receiving chute for sending the materials in the sample buckets to the secondary belt conveyor is provided at the bottom of the multi-station sample collector. The secondary belt conveyor is located below the multi-station sample collector. The running direction of the secondary belt conveyor is perpendicular to that of the primary belt conveyor. A fourth receiving chute communicating with the secondary weighing scale is installed on the secondary belt conveyor. The secondary weighing scale is located below the secondary belt conveyor. A secondary riffle is also installed on the secondary belt conveyor to scrape the materials on the secondary belt conveyor into the fourth receiving chute. A packing machine is provided below the secondary weighing scale.

2. The automatic vehicle sampling device according to claim 1, characterized in that: The multi-station sample collector includes a rotating mechanism. The rotating shaft of the rotating mechanism is arranged in the vertical direction. Each of the sample buckets is installed on the rotating mechanism.

3. The automatic vehicle sampling device according to claim 2, characterized in that: Each of the sample buckets is evenly spaced along the circumferential direction of the rotating mechanism.

4. The automatic vehicle sampling device according to claim 1, characterized in that: A waste bin is provided at the end of the secondary belt conveyor.

5. The automatic vehicle sampling device according to claim 1, characterized in that: The identification recognition device uses a camera.

6. An automatic vehicle sampling system, characterized in that: It includes a sampling room and also includes the automatic vehicle sampling device according to any one of claims 1-5. The automatic vehicle sampling device is installed in the sampling room.

7. The automatic vehicle sampling system according to claim 6, wherein: The walking component is installed on the traveling beam at the top of the sampling room.

8. The automatic vehicle sampling system according to claim 7, characterized in that: The walking component includes a first walking mechanism and a second walking mechanism. The first walking mechanism is installed on the traveling beam at the top of the sampling room. The second walking mechanism is movably installed on the first walking mechanism. The moving direction of the first walking mechanism and the moving direction of the second walking mechanism are perpendicular.

9. The automatic vehicle sampling system according to claim 6, characterized in that: The sampling room is a two-story structure. The first floor of the sampling room is provided with a sample collection room and a tool room. The second floor of the sampling room is provided with a control room. The packing machine is installed in the sample collection room.

Images