Closed full-automatic material collecting and sample separating device

Abstract

The utility model relates to the technical field of material collection and sample separation, and mainly discloses a closed type full-automatic material collection and sample separation device which comprises a sealing box, a two-way funnel grid groove, a first stock bin, a second stock bin and a third stock bin, the first stock bin is arranged above the two-way funnel grid groove, and the third stock bin is arranged below the two-way funnel grid groove. The second stock bin can move to the position above the first stock bin along the C-shaped rail driving mechanism. The first stock bin has a weighing function, the first stock bin, the second stock bin and the third stock bin can be controlled to turn over through a gear rotation driving mechanism, sample discharging bins are arranged at the bottom of the third stock bin and the bottom of the second stock bin in the bottom state, and a waste discharging bin is arranged on the side of the third stock bin. According to the aggregate particle size and the test requirement, samples are automatically separated to meet the test requirement, manpower is liberated, the detection requirement is met, and the defects that in the prior art, sample separation depends on manual operation, and dust is not closed are overcome.

Description

Technical Field

[0001] This utility model relates to the field of aggregate sampling technology, specifically a closed-type fully automatic aggregate sampling device. Background Technology

[0002] Aggregates are essential raw materials in cement concrete and asphalt concrete, serving as the skeleton and filler in the mixture. They include crushed stone, gravel, manufactured sand, stone chips, and sand. In asphalt mixtures, coarse aggregates refer to crushed stone, crushed gravel, screened gravel, and slag with a particle size greater than 2.36 mm. In cement concrete, granular materials, and inorganic binder stabilized materials, coarse aggregates refer to crushed stone, gravel, and crushed gravel with a particle size greater than 4.75 mm. Many important parameters in the testing of coarse and fine aggregates require uniform sampling; only uniformly sampled specimens yield representative test data.

[0003] The tests in the "Specifications for Testing Aggregates in Highway Engineering" JTG 3432-2024, such as T 0302-2024 for sieve analysis of coarse aggregates, T0310-2005 for mud content and mud lump content of coarse aggregates, T 0311-2005 for needle-like and flaky particle content of coarse aggregates (standard instrument method), and T0312-2005 for needle-like and flaky particle content of coarse aggregates (vernier caliper method), all require sample reduction and sampling.

[0004] In current processes, sample reduction often employs a quartering method. The specific process is as follows: A first full shovel of sample is piled into a cone shape on a platform; a second full shovel of sample is placed on top of the cone, and the sample particles are allowed to roll and distribute evenly along all directions of the cone. All samples are piled layer by layer into a large cone shape using this method. Then, the cone-shaped particles are turned over with a shovel, and the process is repeated to form a large cone shape again. After the final layering, a shovel is used to vertically insert into the top of the cone and spread the material evenly around the edges, resulting in a circular disc with a diameter-to-thickness ratio of 4–8. The sample is then divided into four parts along two intersecting diagonals. Samples from one diagonal are taken, and the process is repeated until the required number of samples is obtained. Current standards describe the quartering method as time-consuming, requiring a large area, and subject to significant subjective influence from human operation, with considerable variations between different personnel. When there are many master samples, the operation needs to be repeated multiple times, which is not easy for one person to complete. In addition, the sample separation process is not enclosed and fine dust flies around, which affects other equipment and hygiene in the laboratory.

[0005] Alternatively, a sample reduction method using a distributor can be employed. The specific process for sample reduction using the distributor method is as follows: Pour the sample onto a clean platform (a small amount of sample can be placed in a metal tray) and stir thoroughly; load the sample into a metal tray (or receiving device, etc.) and spread it evenly along its entire length; tilt the metal tray (or receiving device, etc.) to allow the sample to flow uniformly into the distributor from directly above the center line; the sample should pass through each slot as evenly and in equal amounts as possible, falling into two receiving hoppers. Take the sample from one of the receiving hoppers and repeat the reduction process until a sample of the required quantity is obtained. Existing distributors have an even number of slots of equal width. Distributors for coarse aggregates have no fewer than 8 slots, with a slot width not less than 150% of the maximum aggregate particle size; distributors for fine aggregates and fillers have no fewer than 12 slots, with a slot width of 15–20 mm. Each distributor is equipped with no fewer than 2 receiving hoppers. Current binary fractionation equipment relies solely on manual sampling. When dealing with large sample sizes, multiple repetitions are necessary, and the entire process is not automated. For example, to perform a sieve test on a 45 kg sample of coarse aggregate with a nominal particle size of 9.5 mm, requiring a minimum test sample weight of 1.0 kg, the sample size is calculated as follows: 22.5 kg for the first fractionation, 11.2 kg for the second, 5.6 kg for the third, 2.8 kg for the fourth, and 1.4 kg for the fifth. Only after five fractionations is the test requirement met. This multi-step process is time-consuming, labor-intensive, and subject to significant human error. Furthermore, repeated fractionation leads to substantial deviations, affecting the representativeness of the test data. Utility Model Content

[0006] The purpose of this invention is to solve the technical problems existing in the prior art by providing a closed, fully automatic material collection and sampling device. This invention automatically samples materials according to their particle size and test requirements. It frees up manpower, meets testing requirements, and solves the drawbacks of manual sampling and lack of dust containment in existing technologies.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a closed-type fully automatic material collection and sampling device, comprising a sealed box, a two-part funnel trough, a first hopper, a second hopper, and a third hopper. The two-part funnel trough is disposed inside the sealed box. The first hopper is disposed above the two-part funnel trough, and the third hopper is disposed below the funnel trough. The second hopper can be driven to move above the first hopper along a C-shaped track drive mechanism. The first hopper has a weighing function, and the first, second, and third hoppers can be rotated by a gear rotation drive mechanism. A sample discharge hopper is disposed at the bottom of the third hopper and the second hopper in its bottom state. A waste discharge hopper is disposed on the side of the third hopper. The sample discharge hopper and the waste discharge hopper penetrate the bottom of the sealed box, and a side door is disposed on one side of the sealed box.

[0008] Using the above technical solution, when performing sample distribution, the uniformly mixed sample aggregate is loaded into the first silo. The required mass of sample aggregate for the test is loaded by weighing, and the sample is spread out along the length of the first silo. Then, the number of distributions is calculated according to the minimum mass of the sample aggregate required for the test. During the first distribution, the first silo is automatically flipped, and the sample aggregate in the first silo is evenly distributed to the second and third silos through the bi-fusing funnel. After the first distribution, the third silo is flipped to pour the aggregate into the waste discharge silo. The second silo is driven by a C-shaped track mechanism to move above the first silo, and the sample in the second silo is flipped and poured into the first silo. Then, the distribution continues, and the above steps are repeated until the sample in the second or third silo is the required mass of the test sample. Then, the sample aggregate in the second and third silos is poured out in batches.

[0009] Furthermore, the bottoms of the first, second, and third hoppers are arc-shaped, which facilitates the sliding and pouring out of the collected material.

[0010] Furthermore, the bi-fungi funnel trough and the sealing box are detachably connected, and different specifications of bi-fungi funnel troughs can be replaced to meet the testing needs of different aggregate particle sizes in highway engineering tests.

[0011] Furthermore, the first hopper includes an outer shell and an inner liner. A weight sensor is installed between the outer shell and the inner liner. A limit plate is installed above the outer shell. The weight sensor measures the weight of the material collected in the inner liner. When the first hopper is flipped, the limit plate prevents the inner liner from sliding out of the outer shell.

[0012] Furthermore, the bi-fungi funnel trough is provided with partitions at equal intervals along its length to form multiple distribution troughs. Each distribution trough is provided with an inclined plate, which is inclined from one side upward to the other side downward along the height direction of the bi-fungi funnel trough. The inclined plates in adjacent distribution troughs are inclined in opposite directions, so that the outlets at the bottom of adjacent distribution troughs are located on both sides of the midline of the width of the bi-fungi funnel trough. The sample aggregate can be evenly divided into two parts through the multiple distribution troughs of the bi-fungi funnel trough and fall into the second and third material bins, thereby achieving the purpose of sample reduction.

[0013] Furthermore, the C-shaped track drive mechanism includes a C-shaped track, track mounting brackets, and a synchronous belt conveyor mechanism. Two track mounting brackets are symmetrically arranged along the centerline of the first hopper's length direction. Each track mounting bracket has a C-shaped track on its inner side, and the two C-shaped tracks are also symmetrically arranged along the centerline of the first hopper's length direction. The synchronous belt conveyor mechanism includes synchronous pulleys at the four corners of the track mounting brackets, with a synchronous belt between the pulleys. Each pulley is driven by a conveyor motor, and the running trajectory of one side of the synchronous belt is consistent with the C-shaped track. A synchronous belt mounting seat is mounted on the synchronous belt, and a support seat is mounted on the C-shaped track. The two ends of the second hopper are rotatably connected to the two support seats respectively. Rollers are mounted on the support seats, and the rollers can run along the C-shaped track. One side of the support seat is rotatably connected to the synchronous belt mounting seat.

[0014] Furthermore, the synchronous pulley located at one corner of the top of the track mounting bracket is the driving synchronous pulley, the synchronous pulley located at one corner of the bottom of the track mounting bracket is the driven synchronous pulley, and the synchronous pulleys located at the other two corners of the track mounting bracket are auxiliary driven pulleys. The driving and driven synchronous pulleys are equipped with synchronous pulley teeth, and the other two auxiliary driven pulleys are smooth.

[0015] Furthermore, the gear rotation drive mechanism includes a housing, a worm gear, and a worm. The worm gear and the worm are disposed in the housing, the worm meshes with the worm gear, one end of the worm is connected to a drive motor, and any end of the first, second, and third hoppers is connected to the worm gear.

[0016] Furthermore, the gear rotation drive mechanism includes a first rotation mechanism, a second rotation mechanism, and a third rotation mechanism. The housing of the second rotation mechanism is fixedly mounted on a support base on one side. One end of the second hopper is connected to the worm gear of the second rotation mechanism, and the other end of the second hopper is connected to the support base on the other side via a bearing. The housing of the first rotation mechanism is mounted on one side of the sealed box. One end of the first hopper is connected to the worm gear of the first rotation mechanism, and the other end of the first hopper is connected to the other side of the sealed box via a bearing. The housing of the third rotation mechanism is mounted on one side of the sealed box. One end of the third hopper is connected to the worm gear of the third rotation mechanism, and the other end of the third hopper is connected to the other side of the sealed box via a bearing.

[0017] Furthermore, the conveyor motor is mounted on the sealed box via a motor bracket, and the motor shaft of the conveyor motor is connected to the shaft of the drive synchronous pulley via a coupling.

[0018] Furthermore, a tension adjustment mechanism is provided between the synchronous pulley and the track mounting bracket. Support plates are provided at the four corners of the track mounting bracket, and elongated holes are provided on the support plates. The synchronous pulleys are installed in the elongated holes through adjusting seats. A fixed seat is provided at one end of the support plate along the length of the elongated holes, and a notch is provided at one end of the adjusting seat. After the adjusting screw passes through the fixed seat, the other end of the adjusting screw is rotatably connected to the notch. Rotating the adjusting screw can adjust the position of the adjusting seat, thereby adjusting the tension of each synchronous pulley.

[0019] Furthermore, rubber sealing curtains are provided around the bottom of the bi-fusing funnel trough and around the top of the second and third hoppers to prevent material loss during the shrinkage process.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention automatically sorts samples to the required sample mass based on aggregate particle size and test requirements. First, the first hopper automatically rotates, slowly and evenly distributing the sample aggregate from directly above the center line of the two-part funnel into the second and third hoppers below, ensuring equal and uniform flow of sample aggregate into each compartment. Second, a C-shaped track drive mechanism automatically moves the second hopper directly above the first hopper, automatically and slowly and evenly laying the secondary sample aggregate to be reduced in the first hopper, providing a foundation for the next uniform reduction. Simultaneously, the third hopper discharges waste material, the second hopper returns to its original position, and the reduction process is repeated until the required sample aggregate mass is achieved. The C-shaped track drive mechanism and gear rotation drive mechanism free up manpower. Multiple automatic reductions, compared to manual material handling, avoid significant sample deviations caused by human factors such as speed and tilt during manual material handling, which could affect the representativeness of the test data. This fully automatic sample sorting meets testing requirements and avoids the drawbacks of dust accumulation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the sample separation device of this utility model;

[0024] Figure 2 This is a side view of the sample dispensing device of this utility model;

[0025] Figure 3This is a schematic diagram of the C-type track drive mechanism of this utility model;

[0026] Figure 4 This is a side view of the C-type track drive mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the gear rotation drive mechanism of this utility model;

[0028] Figure 6 This is a schematic diagram of the two-part funnel trough structure of this utility model;

[0029] Figure 7 This is a perspective view of the sample separation device of this utility model;

[0030] Figure 8 This is a schematic diagram of the first hopper structure of this utility model.

[0031] In the diagram: 1. Sealed box; 2. Two-part funnel trough; 3. First hopper; 4. Second hopper; 5. Third hopper; 6. Sample discharge hopper; 7. Waste discharge hopper; 8. C-shaped track; 9. Synchronous belt conveyor mechanism; 10. Second rotating mechanism; 11. Third rotating mechanism; 12. First rotating mechanism; 13. Side door; 14. Track mounting bracket; 15. Motor bracket; 16. Conveyor motor; 17. Coupling; 18. Support base; 19. Roller; 20. Active synchronous belt pulley; 21. Driven synchronous belt pulley; 22. Auxiliary driven pulley; 23. Tension adjustment mechanism; 24. Synchronous belt mounting base; 25. Worm gear; 26. Housing; 27. Worm; 28. Partition plate; 29. ​​Inclined plate; 30. Support plate; 31. Adjusting seat; 32. Notch; 33. Fixed seat; 34. Adjusting screw; 35. Outer shell; 36. Lining; 37. Weight sensor; 38. Limiting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 As shown, a closed-type fully automatic material collection and sampling device includes a sealed box 1, a two-part funnel trough 2, a first hopper 3, a second hopper 4, and a third hopper 5.

[0034] The sealed box 1 is an L-shaped box 26 with legs at the bottom. The bi-furrow funnel 2 is located inside the sealed box 1. The first hopper 3 is located above the bi-furrow funnel 2, and the third hopper 5 is located below the funnel funnel 2. The second hopper 4 can be driven to the top of the first hopper 3 along the C-shaped track 8. Furthermore, the tops of the first hopper 3, the second hopper 4, and the third hopper 5 are square, and the bottoms of the first hopper 3, the second hopper 4, and the third hopper 5 are arc-shaped, which facilitates the sliding and pouring out of the collected material.

[0035] like Figure 6 As shown, the middle part of the bi-fungi funnel trough 2 is a square box 26 that runs vertically through the middle. The upper part of the bi-fungi funnel trough 2 is funnel-shaped. In order to increase the receiving area and prevent the material from flowing into the outside and being lost, the lower part of the bi-fungi funnel trough 2 is widened. This width is equal to the width of the second hopper 4 plus the third hopper 5. Inside the square box 26 of the bi-fungi funnel trough 2, partitions 28 are evenly spaced along its length to form multiple material distribution slots. Each material distribution slot is provided with an inclined plate 29. The inclined plate 29 is inclined from one side upward to the other side downward along the height direction of the bi-fungi funnel trough 2. The inclined plate 29 in two adjacent material distribution slots are inclined in opposite directions, so that the outlets at the bottom of two adjacent material distribution slots are located on both sides of the center line of the width of the bi-fungi funnel trough 2. The sample material can be evenly divided into two parts through the multiple material distribution slots of the bi-fungi funnel trough 2 and fall into the second hopper 4 and the third hopper 5, thereby achieving the purpose of sample reduction.

[0036] The first hopper 3 is equipped with a weighing function. The specific solution for implementing the weighing function in the first hopper 3 is as follows: Figure 8 As shown, the first hopper 3 includes an outer shell 35 and an inner liner 36. A weight sensor 37 is provided between the outer shell 35 and the inner liner 36. A limit plate 38 is provided above the outer shell 35. The weight sensor 37 measures the weight of the material collected in the inner liner 36. When the first hopper 3 is flipped, the limit plate 38 prevents the inner liner 36 from sliding out of the outer shell 35.

[0037] The first hopper 3, the second hopper 4, and the third hopper 5 can be controlled to rotate via a gear rotation drive mechanism. A sample discharge hopper 6 is located at the bottom of the third hopper 5 and the second hopper 4 (which is at the bottom). A waste discharge hopper 7 is located on the side of the third hopper 5. The sample discharge hopper 6 and the waste discharge hopper 7 penetrate the bottom of the sealed box 1. A basin or woven bag is placed at the bottom of the sample discharge hopper 6 and the waste discharge hopper 7. Figure 7 As shown, a side door 13 is provided on one side of the sealed box 1.

[0038] A further aspect of this invention is that the bi-fungi funnel trough 2 is detachably connected to the sealing box 1. One possible structure for this detachable connection is that the side of the bi-fungi funnel trough 2 is connected to the inner side of the sealing box 1 via a sliding groove and a slider. When replacement is needed, the bi-fungi funnel trough 2 can be pulled out from the front door, allowing for the replacement of different specifications of bi-fungi funnel trough 2 to meet the testing requirements of different aggregate particle sizes in highway engineering experiments. The bi-fungi funnel trough 2 conforms to the requirements of the standard "Specifications for Aggregate Testing in Highway Engineering" and can be divided into two specifications. For coarse aggregates, the bi-fungi funnel trough 2 is equipped with 12 distribution troughs, with a trough width of 48mm (maximum classifiable aggregate particle size is 31.5mm). For fine aggregates, the bi-fungi funnel trough 2 can be replaced with one equipped with 24 distribution troughs, with a trough width of 24mm.

[0039] A further aspect of this utility model is that, as Figure 1-4 As shown, the C-shaped track 8 drive mechanism includes a C-shaped track 8, track mounting brackets 14, and a synchronous belt conveyor mechanism 9. Two track mounting brackets 14 are symmetrically arranged along the centerline of the length direction of the first hopper 3. Each track mounting bracket 14 has a C-shaped track 8 on its inner side, and the two C-shaped tracks 8 are also symmetrically arranged along the centerline of the length direction of the first hopper 3. The synchronous belt conveyor mechanism 9 includes synchronous pulleys located at the four corners of the track mounting brackets 14, with a synchronous belt between the pulleys. Each synchronous pulley is connected to a conveyor motor 16. The drive is such that the running trajectory of one side of the synchronous belt is consistent with that of the C-shaped track 8; a synchronous belt mounting seat 24 is installed on the synchronous belt, and a support seat 18 is provided on the C-shaped track 8. The two ends of the second hopper 4 are respectively rotatably connected to two of the support seats 18. Rollers 19 are provided on the support seats 18. The rollers 19 can run along the groove on the outside of the C-shaped track 8. Specifically, four rollers 19 are provided on one support seat 18, and two pairs of rollers 19 are respectively located on both sides of the C-shaped track 8. One side of the support seat 18 is rotatably connected to the synchronous belt mounting seat 24.

[0040] like Figure 3 As shown, the synchronous pulley located at one corner of the top of the track mounting bracket 14 is the driving synchronous pulley 20, the synchronous pulley located at one corner of the bottom of the track mounting bracket 14 is the driven synchronous pulley 21, and the synchronous pulleys located at the other two corners of the track mounting bracket 14 are auxiliary driven pulleys 22. The driving synchronous pulley 20 and the driven synchronous pulley 21 are provided with synchronous pulley teeth, and the other two auxiliary driven pulleys 22 are smooth.

[0041] like Figure 5As shown, the gear rotation drive mechanism includes a housing 26, a worm gear 25, and a worm 27. The worm gear 25 and the worm 27 are disposed inside the housing 26. The worm 27 meshes with the worm gear 25. One end of the worm 27 is connected to a drive motor. Any end of the first hopper 3, the second hopper 4, and the third hopper 5 is connected to the worm gear 25.

[0042] Furthermore, the gear rotation drive mechanism includes a first rotation mechanism 12, a second rotation mechanism 10, and a third rotation mechanism 11. The housing 26 of the second rotation mechanism 10 is fixedly mounted on a support base 18 on one side. One end of the second hopper 4 is connected to the worm gear 25 of the second rotation mechanism 10, and the other end of the second hopper 4 is connected to the support base 18 on the other side via a bearing. The housing 26 of the first rotation mechanism 12 is mounted on one side of the sealed box 1. One end of the first hopper 3 is connected to the worm gear 25 of the first rotation mechanism 12, and the other end of the first hopper 3 is connected to the other side of the sealed box 1 via a bearing. The housing 26 of the third rotation mechanism 11 is mounted on one side of the sealed box 1. One end of the third hopper 5 is connected to the worm gear 25 of the third rotation mechanism 11, and the other end of the third hopper 5 is connected to the other side of the sealed box 1 via a bearing.

[0043] like Figure 2 As shown, the conveyor motor 16 is mounted on the sealed box 1 via the motor bracket 15, and the motor shaft of the conveyor motor 16 is connected to the shaft of the drive synchronous pulley 20 via the coupling 17.

[0044] like Figure 4 As shown, a tension adjustment mechanism 23 is provided between the synchronous pulley and the track mounting bracket 14. Support plates 30 are provided at the four corners of the track mounting bracket 14. The support plates 30 are provided with elongated holes. The synchronous pulleys are installed in the elongated holes through adjusting seats 31. A fixed seat 33 is provided at one end of the support plate 30 along the length of the elongated hole. A notch 32 is provided at one end of the adjusting seat 31. After the adjusting screw 34 passes through the fixed seat 33, the other end of the adjusting screw 34 is rotatably connected to the notch 32. Rotating the adjusting screw 34 can adjust the position of the adjusting seat 31, thereby adjusting the tension of each synchronous pulley.

[0045] Immediately afterwards, the conveyor motor 16 controls the second hopper 4 to run along the C-shaped track 8 to directly above the first hopper 3.

[0046] With the above technical solution, when performing sample collection, the front door is opened, the evenly mixed sample collection is loaded into the first hopper 3, the required mass of sample collection for the test is loaded by weighing, and the sample is spread out along the length of the first hopper 3. The front door is then closed, and the number of sample collections is calculated according to the minimum mass of the sample collection required for the test. The drive motors of the conveyor motor 16 and the worm gear 27 are both stepper motors. The movement process of the stepper motor is controlled by the controller. This part of the circuit is a conventional technical means and will not be described in this patent. In this invention, the position of the third hopper 5 is fixed. During the initial reduction, the second hopper 4 is adjacent to the third hopper 5. The centerline of the width direction of the bi-division funnel trough 2 is placed at the centerline between the second hopper 4 and the third hopper 5. The sample collection in the first hopper 3 is evenly distributed to the second hopper 4 and the third hopper 5 through the bi-division funnel trough 2. The stepper motor drives the worm gear 27 to rotate, causing the first hopper 3 to rotate at a certain angle. This angle ensures that all the collection can flow out. After the first reduction, the third hopper 5 is controlled to rotate and pour the collection into the waste hopper 7. The second hopper 4 is driven by the C-shaped track 8 to move above the first hopper 3. The retained sample in the second hopper 4 is rotated and poured into the waste hopper 7. The sample is placed in hopper 3, and then the sample is further divided. The above steps are repeated until the sample in hopper 4 or hopper 5 is the required sample mass for the test. Then the sample aggregate in hopper 4 and hopper 5 is poured out in batches. The solution to pour the sample into hopper 6 from hopper 4 or hopper 5 is as follows: Since hopper 4 and hopper 5 are close to each other when the sample is divided in the two-part funnel trough 2, the sample into hopper 6 from hopper 4 or hopper 5 will interfere with each other. At this time, hopper 4 can be moved to the left by the conveyor motor 16 to avoid the interference space. Then the sample aggregate in hopper 4 or hopper 5 can be poured into hopper 6 for collection.

[0047] This invention automatically sorts samples to the required sample mass based on aggregate particle size and test requirements. First, the automatic rotation of the first hopper 3 automatically and slowly and evenly distributes the sample aggregate from directly above the centerline of the bi-fusing funnel trough 2 into the second and third hoppers 4 and 5 below, ensuring equal and uniform flow of sample aggregate into each dividing trough. Second, a C-shaped track drive mechanism automatically controls the second hopper 4 to move directly above the first hopper 3, automatically and slowly and evenly laying the secondary sample aggregate requiring further reduction into the first hopper 3, providing a foundation for the next uniform reduction. Simultaneously, the third hopper 5 discharges waste material, and the second hopper 4 returns to its original position. The reduction process is then repeated until the required sample aggregate mass is achieved. The C-shaped track drive mechanism and gear rotation drive mechanism free up manpower. Multiple automatic reductions, compared to manual material handling, avoid significant sample deviations caused by human factors such as speed and tilt during manual material handling, which can affect the representativeness of test data. This invention's fully automatic aggregate sorting meets testing requirements and avoids the drawbacks of dust accumulation.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A closed-loop fully automatic material collection and sampling device, characterized in that: The system includes a sealed box (1), a bi-furrow funnel (2), a first hopper (3), a second hopper (4), and a third hopper (5). The bi-furrow funnel (2) is located inside the sealed box (1). The first hopper (3) is located above the bi-furrow funnel (2), and the third hopper (5) is located below the bi-furrow funnel. The second hopper (4) can be driven to the top of the first hopper (3) via a C-shaped track (8). The first hopper (3) has a weighing function, and its weight can be controlled by a gear-driven rotation mechanism. The silo (3), the second silo (4) and the third silo (5) are flipped. The bottom of the third silo (5) and the second silo (4) in the bottom state is provided with a sample discharge silo (6). The side of the third silo (5) is provided with a waste discharge silo (7). The sample discharge silo (6) and the waste discharge silo (7) penetrate the bottom of the sealed box (1). The side door (13) is provided on one side of the sealed box (1). The bottom of the two-part funnel trough (2) and the area around the top of the second silo (4) and the third silo (5) are provided with rubber sealing curtains.

2. The closed-type fully automatic material collection and sampling device according to claim 1, characterized in that: The bottoms of the first hopper (3), the second hopper (4) and the third hopper (5) are arc-shaped, which facilitates the sliding and pouring out of the collected material.

3. The closed-type fully automatic material collection and sampling device according to claim 2, characterized in that: The bi-funnel trough (2) is detachably connected to the sealing box (1).

4. The closed-type fully automatic material collection and sampling device according to claim 3, characterized in that: The first hopper (3) includes an outer shell (35) and an inner liner (36), a weight sensor (37) is provided between the outer shell (35) and the inner liner (36), and a limit plate (38) is provided above the outer shell (35).

5. A closed-type fully automatic material collection and sampling device according to any one of claims 1-4, characterized in that: The bi-funnel trough (2) is provided with partitions (28) at equal intervals along its length to form multiple material distribution troughs. Each material distribution trough is provided with an inclined plate (29). The inclined plate (29) is inclined from one side to the other side along the height direction of the bi-funnel trough (2). The inclined plates (29) in adjacent material distribution troughs are inclined in opposite directions.

6. The closed-loop fully automatic material collection and sampling device according to claim 5, characterized in that: The C-shaped track (8) drive mechanism includes a C-shaped track (8), a track mounting bracket (14), and a synchronous belt conveyor (9). Two track mounting brackets (14) are symmetrically arranged along the centerline of the length direction of the first hopper (3). Each track mounting bracket (14) has a C-shaped track (8) on its inner side, and the two C-shaped tracks (8) are also symmetrically arranged along the centerline of the length direction of the first hopper (3). The synchronous belt conveyor (9) includes synchronous pulleys located at the four corners of the track mounting bracket (14), and synchronous belts are arranged between the synchronous pulleys. The timing belt is driven by a conveyor motor (16), and the running trajectory of one side of the timing belt is consistent with the C-shaped track (8). A timing belt mounting seat (24) is installed on the timing belt, and a support seat (18) is provided on the C-shaped track (8). The two ends of the second hopper (4) are rotatably connected to the two support seats (18) respectively. A roller (19) is provided on the support seat (18), and the roller (19) can run along the C-shaped track (8). One side of the support seat (18) is rotatably connected to the timing belt mounting seat (24).

7. The closed-loop fully automatic material collection and sampling device according to claim 6, characterized in that: The synchronous pulley located at one corner of the top of the track mounting bracket (14) is the driving synchronous pulley (20), the synchronous pulley located at one corner of the bottom of the track mounting bracket (14) is the driven synchronous pulley (21), and the synchronous pulleys located at the other two corners of the track mounting bracket (14) are the auxiliary driven pulleys (22). The conveying motor (16) is mounted on the sealed box (1) through the motor bracket (15), and the motor shaft of the conveying motor (16) is connected to the shaft of the driving synchronous pulley (20) through the coupling (17).

8. The closed-loop fully automatic material collection and sampling device according to claim 5, characterized in that: The gear rotation drive mechanism includes a housing (26), a worm gear (25), and a worm (27). The worm gear (25) and the worm (27) are disposed inside the housing (26). The worm (27) meshes with the worm gear (25). One end of the worm (27) is connected to a drive motor. Any end of the first hopper (3), the second hopper (4), and the third hopper (5) is connected to the worm gear (25).

9. A closed-type fully automatic material collection and sampling device according to claim 8, characterized in that: The gear rotation drive mechanism includes a first rotation mechanism (12), a second rotation mechanism (10), and a third rotation mechanism (11). The housing (26) of the second rotation mechanism (10) is fixedly mounted on a support base (18) on one side. One end of the second hopper (4) is connected to the worm gear (25) of the second rotation mechanism (10), and the other end of the second hopper (4) is connected to the support base (18) on the other side via a bearing. The housing (26) of the first rotation mechanism (12) is mounted on one side of the sealed box (1). One end of the first hopper (3) is connected to the worm gear (25) of the first rotation mechanism (12), and the other end of the first hopper (3) is connected to the other side of the sealed box (1) via a bearing. The housing (26) of the third rotation mechanism (11) is mounted on one side of the sealed box (1). One end of the third hopper (5) is connected to the worm gear (25) of the third rotation mechanism (11), and the other end of the third hopper (5) is connected to the other side of the sealed box (1) via a bearing.

10. A closed-type fully automatic material collection and sampling device according to claim 7, characterized in that: A tension adjustment mechanism (23) is provided between the synchronous pulley and the track mounting bracket (14). Support plates (30) are provided at the four corners of the track mounting bracket (14). The support plates (30) are provided with elongated holes. The synchronous pulley is installed in the elongated holes through the adjustment seat (31). A fixed seat (33) is provided at one end of the support plate (30) along the length of the elongated holes. A notch (32) is provided at one end of the adjustment seat (31). After the adjustment screw (34) passes through the fixed seat (33), the other end of the adjustment screw (34) is rotatably connected to the notch (32).

Images