An online flip-type, multi-section sampling device and method

Abstract

The present invention relates to the field of grain technology, and discloses an online flip-type, multi-section sampling device and method, comprising a base, a support frame fixedly assembled on the top of the base, an integral bracket rotatably connected to the outer wall of the support frame, and the online flip-type, multi-section sampling device, using a combination of multiple cylinders, enables the device to achieve the purpose of online flip-type, multi-section small-scale sampling, and can achieve the coverage and representativeness of the sampling, reduce the number of reductions, and reduce the workload. At the same time, the total amount of sampling can be reduced, and while reducing the total amount of sampling, the sampling amount can be adjusted without reduction, reducing the working steps and workload. The device can be started by a pneumatic telescopic cylinder, so that the telescopic rod slides on the inner wall of the pneumatic telescopic cylinder, so that the fixed teeth are respectively engaged with the two gears, so that the distance between the two grooves can be changed, so that the sample output amount at the bottom of the bulk grain collection bucket can be adjusted, thereby improving the practicality of the device.

Description

Technical Field

[0001] The present invention relates to the field of grain technology, in particular to an online turnover type multi-section sampling device and method. Background Art

[0002] To ensure comprehensive and representative sampling, current sampling methods for bulk grain conveying on conveyor belts involve sampling the entire cross-section at equal flow rate intervals at the transfer and unloading sections of the conveyor belt. For each batch of bulk grain transported on the conveyor belt, specific grain type, flow rate, and sampling intervals are established. Due to the large sample volume, after collecting the sample, the number of subsamples (8-10 kg) is determined based on the sample size. Bulk grain carriers use the ship's hold as batches, mixing the multiple subsamples and sending them to the laboratory for sample preparation and testing.

[0003] Therefore, the existing technology has the following disadvantages: the sample size is large but not representative, and multiple reductions are required, which increases the workload, and improvements are urgently needed. Summary of the Invention

[0004] The present invention provides an online flip-type, multi-section sampling device and method, which has the advantages of achieving sampling coverage and representativeness, reducing the number of reductions and alleviating workload, and solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: an online flip-type, multi-section sampling device and method, comprising a base, a support frame fixedly assembled on the top of the base, an integral bracket rotatably connected to the outer wall of the support frame, a slider sleeved on the outer wall of the integral bracket, a placement box fixedly assembled on one outer wall of the support frame, a controller fixedly mounted on the outer wall of the other side of the support frame, a bulk grain collection assembly provided on the outer wall of the support frame away from the placement box, a flow belt assembly provided on the outer wall of the support frame, a rotating plate sleeved on the outer wall of the integral bracket close to the controller, and a No. 2 cylinder installed on the inner wall of the placement box.

[0006] As a preferred technical solution of the present invention, there are two sliders, the outer wall of one slider is fixedly equipped with a sampling tube body, and the outer wall of the other slider is fixedly equipped with a sampling tube, the bottom of the sampling tube body is provided with a sampling tube inlet, the outer wall of the sampling tube away from the sampling tube inlet is provided with a sampling tube outlet, a sample storage area is fixedly installed between the sampling tube body and the sample tube, a tripod is installed at the bottom of the sampling tube body, the outer wall of the sampling tube body away from the slider is provided with a No. 1 cylinder, and the outer wall of the sampling tube body is slidably connected with an inlet valve.

[0007] As a preferred technical solution of the present invention, the bulk grain collection assembly includes a bulk grain collection bucket, the outer wall of the bulk grain collection bucket is fixedly equipped with a fixing frame, the outer wall of the fixing frame is fixedly equipped with one end of the connecting frame, the other end of the connecting frame is fixedly equipped with a pneumatic telescopic cylinder, the inner wall of the pneumatic telescopic cylinder is slidably connected to one end of the telescopic rod, the other end of the telescopic rod is provided with a fixed tooth, the outer walls on both sides of the fixed tooth are meshed with gears, the outer wall of the gear away from the pneumatic telescopic cylinder is provided with a closing assembly, and the inner wall of the gear is rotatably connected to the limiting column.

[0008] As a preferred technical solution of the present invention, the closing component includes a groove, the inner wall of the groove is provided with a moisture-absorbing block, and the top of the groove is provided with a top cover.

[0009] As a preferred technical solution of the present invention, the pneumatic telescopic cylinder is electrically connected to the controller, there are two gears, and the two gears are symmetrically distributed on both sides of the fixed tooth, the gear is fixedly connected to the groove, the shape of the groove is semicircular, and the diameter of the groove is adapted to the bottom diameter of the bulk grain collection bucket, the moisture-absorbing block is made of wood ash, and the limit column is fixedly mounted on the outer wall of the fixed frame.

[0010] As a preferred technical solution of the present invention, the mobile belt assembly includes a belt line, a mounting block is fixedly installed on one side of the belt line, one end of a connecting block is installed on the outer wall of the other side of the belt line, and a drawstring is fixedly assembled on the other end of the connecting block. The outer wall of the drawstring is sleeved with a limiting block, and the outer wall of the drawstring is provided with an elastic buckle.

[0011] As a preferred technical solution of the present invention, the outer wall of the mounting block on the side away from the belt line is fixedly installed on the outer wall of the placement box, the number of the connecting blocks and the draw rope are both two, and the two connecting blocks and the draw rope are symmetrically distributed on both sides of the belt line, the outer wall of the limit block on the side close to the mounting block is fixedly installed on the outer wall of the support frame, and a counterweight ball is installed at the bottom of the draw rope, and the diameter of the counterweight ball is larger than the diameter of the draw rope.

[0012] As a preferred technical solution of the present invention, the sampling tube inlet is electrically connected to both cylinder No. 1 and cylinder No. 2, the surface area of the inlet valve is larger than the cross-sectional area of the sampling tube inlet, and the inlet valve slides along the outer wall of the sampling tube body, and the inlet valve is electrically connected to cylinder No. 1.

[0013] As a preferred technical solution of the present invention, the integral bracket is located above the flow belt assembly, the rotating plate is located directly above the No. 2 cylinder, and the bottom of the rotating plate overlaps the outer wall of the No. 2 cylinder.

[0014] As a preferred technical solution of the present invention, the following steps are included:

[0015] S1: The integral support is erected on the top of the belt line. A sampling tube body is installed on the outer wall of the integral support. The sampling tube body has a sampling tube inlet, a sample storage area, a sample outlet tube, and a sampling tube outlet to collect and discharge grain samples. First, the No. 1 cylinder transmits a signal, so that the No. 1 cylinder can control the opening and closing of the sampling tube inlet and enable the inlet valve to slide on the outer wall of the sampling tube body, so that the inlet valve can block the sampling tube inlet, so that the sampling tube inlet remains closed when entering the grain sample in the belt line.

[0016] S2: After reaching the sampling position, the signal is sent again through the No. 1 cylinder to make the inlet valve slide on the outer wall of the sampling tube body, thereby exposing the sampling tube inlet. After the sampling tube inlet is opened, the grain sample is allowed to flow into the sample storage area. After completing this action, the signal is sent again through the No. 1 cylinder to make the inlet valve close the sampling tube inlet, thereby completing the work of grain sample collection;

[0017] S3: The grain sample entering the top of the belt line at the sampling tube inlet is flipped over by the No. 2 cylinder. After the grain sample is collected, the No. 2 cylinder controls the sampling tube body to flip over again, and discharges the grain sample in the storage area from the sampling tube outlet to the inside of the bulk grain collection hopper. The entire sampling process is purely mechanical sampling, which can maintain the original shape of the grain sample.

[0018] The present invention has the following beneficial effects:

[0019] 1. The online flip-type, multi-section sampling device and method utilize the combined use of multiple cylinders, so that the device can achieve the purpose of online flip-type, multi-section small-scale sampling, and can achieve sampling coverage and representativeness, and reduce the number of reductions, reducing the workload. At the same time, the total amount of sampling can be reduced. While reducing the total amount of sampling, the sampling amount is adjustable without the need for reduction, reducing the working steps and workload. The pneumatic telescopic cylinder can be activated to slide the telescopic rod on the inner wall of the pneumatic telescopic cylinder, so that the fixed teeth are respectively engaged with the two gears, so that the distance between the two grooves can be changed, so that the sample output at the bottom of the bulk grain collection hopper is adjustable, thereby improving the practicality of the device.

[0020] 2. The online flip-type, multi-section sampling device and method adopts a controller to control the operation and shutdown of the entire device, so that when the controller sends a signal, cylinder No. 1 and cylinder No. 2 can start working, and cylinder No. 1 and cylinder No. 2 can control the sampling of the device and the flipping of the belt line, so that the device can be a purely mechanical sampling. After completing the flip-type sampling work, the device can remain in its original state, and at the same time meet the explosion-proof requirements, which is worthy of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the placement box structure of the present invention;

[0023] Figure 3 This is a schematic structural diagram of cylinder No. 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the sample storage area structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of cylinder No. 2 of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the flow belt assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the bulk grain collection structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the fixed tooth structure of the present invention;

[0029] Figure 9 This is a schematic structural diagram of the moisture-absorbing block of the present invention;

[0030] Figure 10 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0031] Figure 11 This is a schematic diagram of the sample tube outlet structure of the present invention;

[0032] Figure 12 It is a schematic diagram of the plug structure of the present invention.

[0033] In the figure: 1. Base; 2. Support frame; 3. Integral bracket; 4. Slider; 5. Storage box; 6. Bulk grain collection assembly; 601. Bulk grain collection hopper; 602. Fixed frame; 603. Connecting frame; 604. Pneumatic telescopic cylinder; 605. Telescopic rod; 606. Fixed tooth; 607. Gear; 608. Closing assembly; 6081. Groove; 6082. Moisture absorbing block; 6083. Top cover; 609. Limiting column; 7. Controller; 8. Flow belt assembly; 801. Belt line; 802. Mounting block; 803. Connecting block; 804. Drawstring; 805. Limit block; 806. Elastic buckle; 9. Sampling tube body; 10. Sampling tube inlet; 11. Inlet valve; 12. Cylinder No. 1; 13. Sample tube; 14. Sampling tube outlet; 15. Cylinder No. 2; 16. Rotating plate; 17. Sample storage area; 18. Tripod; 19. Cylinder No. 3; 20. Sample tube outlet; 21. Plug; 22. Sample tube inlet. DETAILED DESCRIPTION

[0034] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1-10 , an online flip-type, multi-section sampling device and method, including a base 1, a support frame 2 is fixedly assembled on the top of the base 1, the outer wall of the support frame 2 is rotatably connected to the integral bracket 3, the outer wall of the integral bracket 3 is sleeved with a slider 4, one side outer wall of the support frame 2 is fixedly assembled with a placement box 5, the other side outer wall of the support frame 2 is fixedly mounted with a controller 7, the outer wall of the support frame 2 on the side away from the placement box 5 is provided with a bulk grain collection component 6, the outer wall of the support frame 2 is provided with a flow belt component 8, the outer wall of the integral bracket 3 on the side close to the controller 7 is sleeved with a rotating plate 16, and the inner wall of the placement box 5 is installed with a No. 2 cylinder 15. Utilizing the above structure, through the setting of the base 1, the stability of the device can be increased, so that the device will not easily tip over during operation.

[0037] In a preferred embodiment, there are two sliders 4, the outer wall of one slider 4 is fixedly equipped with a sampling tube body 9, and the outer wall of the other slider 4 is fixedly equipped with a sample outlet tube 13, a sampling tube inlet 10 is provided at the bottom of the sampling tube body 9, and a sampling tube outlet 14 is provided on the outer wall of the sample outlet tube 13 on the side away from the sampling tube inlet 10, a sample storage area 17 is fixedly installed between the sampling tube body 9 and the sample outlet tube 13, a tripod 18 is installed at the bottom of the sampling tube body 9, a No. 1 cylinder 12 is provided on the outer wall of the side of the sampling tube body 9 away from the slider 4, and an inlet valve 11 is slidably connected to the outer wall of the sampling tube body 9. Using the above structure, a signal is emitted by the No. 1 cylinder 12, so that the sampling tube inlet 10 can enter the belt line 801 to take the grain sample. After the grain sample collection is completed, the No. 1 cylinder 12 can control it to flip over, and the grain sample in the storage area 17 can be discharged from the sampling tube outlet 14 to the inside of the bulk grain collection bucket 601.

[0038] In a preferred embodiment, the bulk grain collection assembly 6 includes a bulk grain collection bucket 601, the outer wall of the bulk grain collection bucket 601 is fixedly equipped with a fixing frame 602, the outer wall of the fixing frame 602 is fixedly equipped with one end of a connecting frame 603, the other end of the connecting frame 603 is fixedly equipped with a pneumatic telescopic cylinder 604, the inner wall of the pneumatic telescopic cylinder 604 is slidably connected to one end of a telescopic rod 605, the other end of the telescopic rod 605 is provided with a fixed tooth 606, and the outer walls of both sides of the fixed tooth 606 are meshed with gears. 607, a closing assembly 608 is provided on the outer wall of the gear 607 away from the pneumatic telescopic cylinder 604, and the inner wall of the gear 607 is rotatably connected to the limiting column 609. By utilizing the above structure and starting the pneumatic telescopic cylinder 604, the telescopic rod 605 can be extended and retracted on the inner wall of the pneumatic telescopic cylinder 604, thereby driving the fixed tooth 606 to engage with the two gears 607, so that the distance between the two grooves 6081 is different, and the sample output at the bottom of the bulk grain collecting hopper 601 can be controlled.

[0039] In a preferred embodiment, the closing component 608 includes a groove 6081, the inner wall of the groove 6081 is provided with a moisture-absorbing block 6082, and the top of the groove 6081 is provided with a top cover 6083. Using the above structure, the shape of the groove 6081 is semicircular, and the diameter of the groove 6081 is adapted to the bottom diameter of the bulk grain collection bucket 601. It can be seen that the groove 6081 can make the bottom of the bulk grain collection bucket 601 closed.

[0040] In a preferred embodiment, the pneumatic telescopic cylinder 604 is electrically connected to the controller 7, there are two gears 607, and the two gears 607 are symmetrically distributed on both sides of the fixed tooth 606, the gear 607 is fixedly connected to the groove 6081, the shape of the groove 6081 is semicircular, and the diameter of the groove 6081 is adapted to the bottom diameter of the bulk grain collection bucket 601, the moisture-absorbing block 6082 is made of wood ash, and the limiting column 609 is fixedly installed on the outer wall of the fixed frame 602. Using the above structure, through the characteristics of the moisture-absorbing block 6082, it can be seen that the moisture-absorbing block 6082 has the important role of moisture absorption, so that the placement time of the grain on the inner wall of the bulk grain collection bucket 601 can be effectively extended.

[0041] In a preferred embodiment, the mobile belt assembly 8 includes a belt line 801, a mounting block 802 is fixedly installed on one side of the belt line 801, one end of a connecting block 803 is installed on the outer wall of the other side of the belt line 801, and the other end of the connecting block 803 is fixedly equipped with a drawstring 804, the outer wall of the drawstring 804 is sleeved with a limiting block 805, and the outer wall of the drawstring 804 is provided with an elastic buckle 806. Using the above structure, through the setting of the elastic buckle 806, the elastic buckle 806 can tighten the drawstring 804, so that the belt line 801 can be in a taut state, and the drawstring 804 will not easily detach from the limiting block 805.

[0042] In a preferred embodiment, the mounting block 802 is fixedly mounted on the outer wall of the placement box 5 on the side away from the belt line 801, the number of connecting blocks 803 and the drawstring 804 are both two, and the two connecting blocks 803 and the drawstring 804 are symmetrically distributed on both sides of the belt line 801, and the limit block 805 is fixedly mounted on the outer wall of the side close to the mounting block 802 on the outer wall of the support frame 2, and a counterweight ball is installed at the bottom of the drawstring 804, and the diameter of the counterweight ball is larger than the diameter of the drawstring 804. Using the above structure, one end of the belt line 801 can be fixed by setting the mounting block 802, and the curvature of the cross section of the belt line 801 can be controlled by pulling the drawstring 804, so that the belt line 801 can be more adapted to the sampling tube inlet 10, thereby facilitating subsequent food collection work.

[0043] In a preferred embodiment, the sampling tube inlet 10 is electrically connected to the No. 1 cylinder 12 and the No. 2 cylinder 15, the surface area of the inlet valve 11 is larger than the cross-sectional area of the sampling tube inlet 10, and the inlet valve 11 slides along the outer wall of the sampling tube body 9, and the inlet valve 11 is electrically connected to the No. 1 cylinder 12. Utilizing the above structure, through the characteristics that the sampling tube inlet 10 is electrically connected to the No. 1 cylinder 12 and the No. 2 cylinder 15, it can be seen that the sample storage area 17 and the sampling tube outlet 14 can both transmit signals through the No. 1 cylinder 12, so that the No. 1 cylinder 12 controls the opening and closing of the sampling tube inlet 10, thereby realizing the collection and discharge of grain samples.

[0044] In a preferred embodiment, the integral bracket 3 is located above the flow belt assembly 8, the rotating plate 16 is located directly above the No. 2 cylinder 15, and the bottom of the rotating plate 16 overlaps the outer wall of the No. 2 cylinder 15. Utilizing the above structure and through the position characteristics of the integral bracket 3, the sampling tube body 9 and the sampling tube inlet 10 installed on the outer wall of the integral bracket 3 can be used to collect grain at the top of the flow belt assembly 8.

[0045] In a preferred embodiment, the method comprises the following steps:

[0046] S1: The integral support 3 is erected on the top of the belt line 801. Since the sampling tube body 9 is installed on the outer wall of the integral support 3, and the sampling tube body 9 has a sampling tube inlet 10, a sample storage area 17, a sample outlet tube 13, and a sampling tube outlet 14 to realize the collection and discharge of grain samples, the No. 1 cylinder 12 first transmits a signal, so that the No. 1 cylinder 12 can control the opening and closing of the sampling tube inlet 10, and can make the inlet valve 11 slide on the outer wall of the sampling tube body 9, so that the inlet valve 11 can block the sampling tube inlet 10, so that the sampling tube inlet 10 remains closed when entering the grain sample in the belt line 801;

[0047] S2: After reaching the sampling position, the No. 1 cylinder 12 transmits a signal again, causing the inlet valve 11 to slide on the outer wall of the sampling tube body 9, thereby exposing the sampling tube inlet 10. After the sampling tube inlet 10 is opened, the grain sample is allowed to flow into the sample storage area 17. After this action is completed, the No. 1 cylinder 12 transmits a signal again, causing the inlet valve 11 to close the sampling tube inlet 10, thereby completing the grain sample collection work;

[0048] S3: The grain sample entering the top of the belt line 801 at the sampling tube inlet 10 is flipped over by the No. 2 cylinder 15. After the grain sample is collected, the No. 2 cylinder 15 controls the sampling tube body 9 to flip over again, and discharges the grain sample at the sample storage area 17 from the sampling tube outlet 14 to the interior of the bulk grain collecting hopper 601. The entire sampling process is purely mechanical sampling, which can maintain the original shape of the grain sample.

[0049] Example 2

[0050] See also Figure 11-12 The difference from Example 1 is that a No. 3 cylinder 19 is installed on the inner wall of the sampling tube body 9, a sample tube outlet 20 is fixedly assembled on the outer wall of the sampling tube body 9, a plug 21 is slidably connected to the inner wall of the sampling tube body 9, and a sample tube inlet 22 is opened at the connection between the sampling tube body 9 and the sample tube outlet 20.

[0051] In a preferred embodiment, the method comprises the following steps:

[0052] S1; The sampling tube inlet 10 is opened and closed by the No. 1 cylinder 12, and the sampling tube inlet 10 is kept closed when the grain sample enters the flow belt 8. At this time, the No. 3 cylinder 19 controls the plug 21 to block the sample tube inlet 22, thereby controlling the material sampling amount. After the sampling tube inlet 10 reaches the sampling position, the No. 1 cylinder 12 opens the inlet valve 11 to allow the grain sample to flow into the sample storage area 17. After completing this action, the inlet valve 1 is closed again by the No. 1 cylinder 12 to complete the grain sample collection;

[0053] S2; The sampling tube inlet 10 enters the flowing belt 8 and the grain sample is turned over by the No. 2 cylinder 15. After the grain sample collection is completed, the sampling tube body 9 is turned over again by the No. 2 cylinder 15. At this time, the No. 3 cylinder 19 controls the plug 21 to expose the sample tube inlet 22, and the grain sample in the sample storage area 17 is discharged from the sample tube outlet 20 to the inner wall of the bulk grain collection bucket 601 to complete the sampling work.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An online flip-type, multi-section sampling device, comprising a base (1), characterized in that: The top of the base (1) is fixedly equipped with a support frame (2), the outer wall of the support frame (2) is rotatably connected to the integral support frame (3), the outer wall of the integral support frame (3) is sleeved with a slider (4), one side outer wall of the support frame (2) is fixedly equipped with a placement box (5), the other side outer wall of the support frame (2) is fixedly equipped with a controller (7), the outer wall of the support frame (2) away from the placement box (5) is provided with a bulk grain collection component (6), the outer wall of the support frame (2) is provided with a flow belt component (8), the outer wall of the integral support frame (3) close to the controller (7) is sleeved with a rotating plate (16), and the inner wall of the placement box (5) is installed with a No. 2 cylinder (15); There are two sliders (4), the outer wall of one slider (4) is fixedly equipped with a sampling tube body (9), and the outer wall of the other slider (4) is fixedly equipped with a sample outlet tube (13), the bottom of the sampling tube body (9) is provided with a sampling tube inlet (10), the outer wall of the sample outlet tube (13) away from the sampling tube inlet (10) is provided with a sampling tube outlet (14), a sample storage area (17) is fixedly installed between the sampling tube body (9) and the sample outlet tube (13), a tripod (18) is installed at the bottom of the sampling tube body (9), a No. 1 cylinder (12) is provided on the outer wall of the sampling tube body (9) away from the slider (4), and the outer wall of the sampling tube body (9) is slidably connected with an inlet valve (11); The bulk grain collection assembly (6) includes a bulk grain collection bucket (601), an outer wall of the bulk grain collection bucket (601) is fixedly equipped with a fixing frame (602), an outer wall of the fixing frame (602) is fixedly equipped with one end of a connecting frame (603), and the other end of the connecting frame (603) is fixedly equipped with a pneumatic telescopic cylinder (604), an inner wall of the pneumatic telescopic cylinder (604) is slidably connected to one end of a telescopic rod (605), and the other end of the telescopic rod (605) is provided with a fixed tooth (606), and both sides of the outer wall of the fixed tooth (606) are meshed with a gear (607), and the outer wall of the gear (607) away from the pneumatic telescopic cylinder (604) is provided with a closing assembly (608), and the inner wall of the gear (607) is rotatably connected to a limiting column (609); The mobile belt assembly (8) comprises a belt line (801), a mounting block (802) is fixedly mounted on one side of the belt line (801), one end of a connecting block (803) is mounted on the outer wall of the other side of the belt line (801), a drawstring (804) is fixedly mounted on the other end of the connecting block (803), the outer wall of the drawstring (804) is sleeved with a limiting block (805), and the outer wall of the drawstring (804) is provided with an elastic buckle (806); The outer wall of the side of the mounting block (802) away from the belt line (801) is fixedly mounted on the outer wall of the placement box (5), the number of the connecting blocks (803) and the drawstring (804) are both two, and the two connecting blocks (803) and the drawstring (804) are symmetrically distributed on both sides of the belt line (801), the outer wall of the side of the limiting block (805) close to the mounting block (802) is fixedly mounted on the outer wall of the support frame (2), and a counterweight ball is installed at the bottom of the drawstring (804), and the diameter of the counterweight ball is larger than the diameter of the drawstring (804).

2. The online flip-type, multi-section sampling device according to claim 1, characterized in that: The closure assembly (608) includes a groove (6081), the inner wall of the groove (6081) is provided with a moisture-absorbing block (6082), and the top of the groove (6081) is provided with a top cover (6083).

3. The online flip-type, multi-section sampling device according to claim 2, characterized in that: The pneumatic telescopic cylinder (604) is electrically connected to the controller (7). There are two gears (607), and the two gears (607) are symmetrically distributed on both sides of the fixed tooth (606). The gears (607) are fixedly connected to the groove (6081). The shape of the groove (6081) is semicircular, and the diameter of the groove (6081) is adapted to the bottom diameter of the bulk grain collecting hopper (601). The moisture absorbing block (6082) is made of plant ash. The limiting column (609) is fixedly mounted on the outer wall of the fixed frame (602).

4. The online flip-type, multi-section sampling device according to claim 3, characterized in that: The sampling tube inlet (10) is electrically connected to both the No. 1 cylinder (12) and the No. 2 cylinder (15). The surface area of the inlet valve (11) is larger than the cross-sectional area of the sampling tube inlet (10). The inlet valve (11) slides along the outer wall of the sampling tube body (9). The inlet valve (11) is electrically connected to the No. 1 cylinder (12).

5. The online flip-type, multi-section sampling device according to claim 4, characterized in that: The integral support (3) is located above the flow belt assembly (8), the rotating plate (16) is located directly above the No. 2 cylinder (15), and the bottom of the rotating plate (16) overlaps the outer wall of the No. 2 cylinder (15).

6. The sampling method of the online flip-type, multi-section sampling device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: The integral support (3) is erected on the top of the belt line (801). The outer wall of the integral support (3) is provided with a sampling tube body (9), and the sampling tube body (9) has a sampling tube inlet (10), a sample storage area (17), a sample outlet tube (13), and a sampling tube outlet (14) to realize the collection and discharge of grain samples. First, the No. 1 cylinder (12) transmits a signal, so that the No. 1 cylinder (12) can control the opening and closing of the sampling tube inlet (10), and can make the inlet valve (11) slide on the outer wall of the sampling tube body (9), so that the inlet valve (11) can block the sampling tube inlet (10), so that the sampling tube inlet (10) is kept in a closed state when the grain sample enters the belt line (801); S2: After reaching the sampling position, the first cylinder (12) transmits a signal again, which causes the inlet valve (11) to slide on the outer wall of the sampling tube body (9), thereby exposing the sampling tube inlet (10). After the sampling tube inlet (10) is opened, the grain sample is allowed to flow into the sample storage area (17). After completing this action, the first cylinder (12) transmits a signal again, causing the inlet valve (11) to close the sampling tube inlet (10), thereby completing the work of grain sample collection. S3: The grain sample entering the top of the belt line (801) at the sampling tube inlet (10) is turned over by the No. 2 cylinder (15). After the grain sample is collected, the No. 2 cylinder (15) controls the sampling tube body (9) to turn over again, and discharges the grain sample at the sample storage area (17) from the sampling tube outlet (14) to the inside of the bulk grain collection hopper (601). The entire sampling process is purely mechanical sampling, which can maintain the original shape of the grain sample.

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