Sampling device for grain condition monitoring

Abstract

The utility model relates to the technical field of sampling devices, and discloses a sampling device for grain condition monitoring, which comprises a guide frame and a sampling table capable of moving bidirectionally, a motor is mounted on the sampling table, a rotating pipe is rotatably mounted on the inner wall of the sampling table, a material suction pipe is rotatably mounted on the inner wall of the rotating pipe, and the rotating pipe and the material suction pipe are both driven by the motor. The lower portion of the rotary pipe and the lower portion of the material suction pipe are each provided with a sampling hole, two sets of turbulent flow rods are installed on the rotary pipe, a negative pressure material suction assembly matched with the sampling holes is installed on the guide frame, and a discharging port of the negative pressure material suction assembly is communicated with a detection cylinder. During sampling, on one hand, variable-depth continuous sampling operation of grain materials in a granary can be realized, and on-line moisture and temperature detection operation of sampled grain can be realized at each sampling depth, so that the functionality of the device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and more specifically, to a sampling device for grain condition monitoring. Background Technology

[0002] In the prior art, patent document CN118243447B discloses a grain sampling device, including: a sampling head, which includes a fixed ring, a rotating sleeve, a conical sleeve, and a clutch assembly. The rotating sleeve is coaxially arranged with the fixed ring and rotatably mounted on the lower end of the fixed ring. A drive assembly is installed between the fixed ring and the rotating sleeve. A spiral band is integrally provided on the outer wall of the rotating sleeve. The conical sleeve is fixed to the bottom end of the rotating sleeve. The clutch assembly is located on the inner side of the conical sleeve. The above device can effectively prevent grain from spilling out of the sampling tube, making the sampling operation more convenient and reliable. However, the above sampling device has the following technical problems when used:

[0003] 1. It is not convenient to carry out continuous sampling of grain at varying depths in grain warehouses;

[0004] 2. It is not convenient to conduct online moisture and temperature detection of sampled grains;

[0005] 3. It is not convenient to achieve self-cleaning of the testing facility and maintain accuracy after each test;

[0006] Based on this, the present invention provides a sampling device for grain condition monitoring to solve the technical problems mentioned in the background art. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, this utility model provides a sampling device for grain condition monitoring. When sampling, this utility model can realize continuous sampling of grain at different depths in the grain warehouse. At each sampling depth, the device can realize online moisture and temperature detection of the sampled grain.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for grain condition monitoring, comprising a guide frame and a bidirectional movable sampling platform. A motor is mounted on the sampling platform, and a rotating tube is rotatably mounted on the inner wall of the sampling platform. A suction tube is rotatably mounted on the inner wall of the rotating tube. Both the rotating tube and the suction tube are driven by a motor. A sampling hole is opened at the lower part of both the rotating tube and the suction tube. Two sets of baffles are mounted on the rotating tube. A negative pressure suction assembly adapted to the sampling hole is mounted on the guide frame. The discharge port of the negative pressure suction assembly is connected to... A detection cylinder is provided, and a moisture probe and a temperature probe are installed inside the detection cylinder. A one-way exhaust pipe is connected to the surface of the detection cylinder, and a sample storage cylinder is connected to the bottom of the detection cylinder. A rotating shaft driven by a motor is rotatably installed on the inner wall of the sample storage cylinder. A set of baffles arranged in a circumferential array and suitable for sealing the detection cylinder are installed on the rotating shaft. A sample storage cavity is provided between each pair of baffles. A sample discharge valve is connected to the bottom surface of the sample storage cylinder. An air purification pump is installed on the guide frame, and the air outlet of the air purification pump is connected to the inner cavity of the detection cylinder.

[0009] As a preferred technical solution of this utility model, it also includes a walking platform and two guide rails. The walking platform moves along the two guide rails and is fixedly connected to the guide frame. A vertically arranged screw lifting module is installed on the guide frame. The sampling table is slidably connected to the guide frame and is driven by the screw lifting module.

[0010] As a preferred technical solution of this utility model, a microcontroller is installed on the walking platform, and the data terminals of the moisture probe and the temperature probe are both connected to the microcontroller.

[0011] As a preferred embodiment of this utility model, the output shaft of the motor is connected to a synchronous belt, the suction pipe is connected to the synchronous belt, a reverse coupling is rotatably connected to the sampling platform, a driven bevel gear is installed on both the suction pipe and the rotary pipe, a reverse bevel gear is installed on the reverse coupling, both driven bevel gears are connected to the reverse bevel gear, and the two driven bevel gears are respectively located on both sides of the reverse bevel gear.

[0012] As a preferred embodiment of this utility model, a cone head is installed on the bottom surface of the spiral tube, and the rotation axis of the sampling hole is perpendicular to the axis of the spiral tube and the suction tube.

[0013] As a preferred embodiment of this utility model, the negative pressure suction assembly includes a negative pressure suction channel opened inside the suction pipe, a suction pump is installed on the guide frame, the suction port of the suction pump is connected to the negative pressure suction channel through a corrugated connecting pipe, the negative pressure suction channel is connected to the sampling hole on the suction pipe, and the discharge port of the suction pump is connected to the detection cylinder.

[0014] As a preferred embodiment of this utility model, the air inlet port of the air purification pump is equipped with a filter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. When sampling, this utility model can achieve continuous sampling of grain at varying depths in the granary. On the other hand, at each sampling depth, the device can perform online moisture and temperature detection of the sampled grain, thereby effectively improving the functionality of the device. In addition, the device can perform self-cleaning of the detection mechanism after each detection, thereby effectively maintaining the detection accuracy of the detection element.

[0017] 2. In this invention, the suction pump and motor work synchronously during sampling. When the suction pump is working, a designated baffle seals the bottom of the detection cylinder. The quantitative grain drawn by the suction pump enters the detection cylinder and is temporarily stored there. The grain inside the detection cylinder is tested online by a moisture probe and a temperature probe. The online test results are output to the microcontroller in real time. After a single sampling and test is completed, the baffle loses its sealing effect on the bottom of the detection cylinder, and the grain inside the detection cylinder enters a designated storage chamber for temporary storage, thus completing the buffering of the sampled grain at a designated depth. After a single sampling is completed, variable depth sampling can be performed, thereby enabling continuous multi-depth sampling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sampling device for grain condition monitoring according to the present invention;

[0019] Figure 2 This utility model Figure 1 A magnified schematic diagram of the local structure at point A;

[0020] Figure 3 This is a schematic diagram of the guide frame and sampling stage of this utility model;

[0021] Figure 4 This utility model Figure 3 A magnified schematic diagram of the local structure at point B;

[0022] Figure 5 This is a schematic diagram of the structure of the material stop and the rotating shaft of this utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of the turbulence bar and vortex tube of this utility model.

[0024] In the diagram: 1. Guide frame; 2. Sampling platform; 3. Motor; 4. Rotary tube; 5. Suction pipe; 6. Sampling hole; 7. Baffle bar; 8. Detection cylinder; 9. Moisture probe; 10. Temperature probe; 11. One-way exhaust pipe; 12. Sample storage cylinder; 13. Rotating shaft; 14. Material stop; 15. Sample storage chamber; 16. Discharge valve; 17. Air purification pump; 18. Walking platform; 19. Guide rail; 20. Screw lifting module; 21. Microcontroller; 22. Reverse coupling; 23. Negative pressure suction channel; 24. Suction pump; 25. Corrugated connecting pipe. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 6 As shown, this utility model provides a sampling device for grain condition monitoring, including a guide frame 1 and a bidirectional movable sampling platform 2;

[0027] It also includes a walking platform 18 and two guide rails 19, the walking platform 18 moving along the two guide rails 19;

[0028] The walking platform 18 has a built-in power mechanism. The walking platform 18 is a commonly used mechanism in the prior art, and will not be described in detail here.

[0029] A microcontroller 21 is installed on the walking platform 18;

[0030] When in use, the guide rail 19 is fixed in the grain silo where the grain is stored;

[0031] The walking platform 18 is fixedly connected to the guide frame 1. A vertically arranged screw lifting module 20 is installed on the guide frame 1. The sampling table 2 is slidably connected to the guide frame 1 and is driven by the screw lifting module 20.

[0032] By setting up the walking platform 18 and the screw lifting module 20, the sampling platform 2 can move freely within the grain warehouse, thereby changing the sampling position of this sampling device.

[0033] A motor 3 is installed on the sampling stage 2. A spiral tube 4 is rotatably installed on the inner wall of the sampling stage 2. A suction tube 5 is rotatably installed on the inner wall of the spiral tube 4. Both the spiral tube 4 and the suction tube 5 are driven by the motor 3.

[0034] A sampling hole 6 is provided at the lower part of both the spiral tube 4 and the suction tube 5. A cone head is installed on the bottom surface of the spiral tube 4. The rotation axis 13 of the sampling hole 6 is perpendicular to the axis of the spiral tube 4 and the suction tube 5.

[0035] The output shaft of motor 3 is connected to a synchronous belt, the suction pipe 5 is connected to the synchronous belt, and a reverse coupling 22 is rotatably connected to the sampling stage 2. A driven bevel tooth is installed on both the suction pipe 5 and the spiral pipe 4, and a reverse bevel tooth is installed on the reverse coupling 22. Both driven bevel teeth are connected to the reverse bevel tooth, and the two driven bevel teeth are respectively located on both sides of the reverse bevel tooth.

[0036] By setting the anti-coupling 22, the suction pipe 5 and the rotary pipe 4 can rotate in opposite directions on the same axis during the sampling operation.

[0037] Two sets of turbulence-inducing rods 7 are installed on the vortex tube 4;

[0038] During the sampling operation, the rotation state of the suction pipe 5 is set to drive the turbulence bar 7 to agitate the grain to be sampled. By agitating, the blockage rate of the grain to be sampled outside the sampling hole 6 is reduced, and the sampling ease of the sampling hole 6 is improved.

[0039] During sampling, the two sampling holes 6 are periodically connected. The periodic connection of the two sampling holes 6 effectively increases the negative pressure inside the suction pipe 5, thereby increasing the suction force of the sampling holes 6 on the grain to be sampled. At the same time, the internal rotation structure of the suction pipe 5 can effectively reduce the blockage rate of the grain in the suction pipe 5.

[0040] A negative pressure suction assembly adapted to the sampling hole 6 is installed on the guide frame 1, and the discharge port of the negative pressure suction assembly is connected to a detection cylinder 8;

[0041] The negative pressure suction assembly includes a negative pressure suction channel 23 opened inside the suction pipe 5, a suction pump 24 installed on the guide frame 1, the suction port of the suction pump 24 is connected to the negative pressure suction channel 23 through the corrugated connecting pipe 25, the negative pressure suction channel 23 is connected to the sampling hole 6 on the suction pipe 5, and the discharge port of the suction pump 24 is connected to the detection cylinder 8.

[0042] Inside the detection cylinder 8, a moisture probe 9 and a temperature probe 10 are respectively installed. The data terminals of the moisture probe 9 and the temperature probe 10 are both connected to the microcontroller 21.

[0043] During grain sampling operations, moisture probe 9 is used to monitor the moisture data of the sampled grain in the detection cylinder 8 in real time, and temperature probe 10 is used to monitor the temperature data of the sampled grain in the detection cylinder 8 in real time.

[0044] The surface of the detection cylinder 8 is connected to a one-way exhaust pipe 11, which allows the gas entering the detection cylinder 8 to be discharged outward in one direction.

[0045] The bottom end of the detection cylinder 8 is connected to a sample storage cylinder 12. The inner wall of the sample storage cylinder 12 is rotatably mounted with a rotating shaft 13 driven by a motor. A set of baffle seats 14 arranged in a circumferential array and suitable for sealing the detection cylinder 8 are mounted on the rotating shaft 13. A sample storage cavity 15 is provided between each pair of baffle seats 14. A sample discharge valve 16 is connected to the bottom surface of the sample storage cylinder 12. An air purification pump 17 is mounted on the guide frame 1. The air outlet of the air purification pump 17 is connected to the inner cavity of the detection cylinder 8. A filter is installed at the air inlet of the air purification pump 17.

[0046] When the suction pump 24 is working, a designated baffle seat 14 seals the bottom of the detection cylinder 8. The quantitative grain sucked by the suction pump 24 enters the detection cylinder 8 and is temporarily stored in the detection cylinder 8. The grain entering the detection cylinder 8 is detected online by the moisture probe 9 and the temperature probe 10. The online detection results are output to the microcontroller 21 in real time.

[0047] After the grain in the detection cylinder 8 is tested, the baffle seat 14 loses its sealing function on the bottom of the detection cylinder 8. The grain in the detection cylinder 8 enters a designated sample storage chamber 15 for temporary storage. When the baffle seat 14 rotates, the air cleaning pump 17 works, thereby realizing the air cleaning of the inner wall of the detection cylinder 8 and the cleaning of the dirt at the probe ends of the moisture probe 9 and temperature probe 10, thereby maintaining the surface cleanliness of the detection cylinder 8, the moisture probe 9 and the temperature probe 10, and reducing the grain contamination rate during variable depth sampling.

[0048] The working principle and usage process of this utility model are as follows: During use, the guide rail 19 is fixed in the grain silo where the grain is stored. Through the setting of the walking platform 18 and the screw lifting module 20, the sampling platform 2 can move freely within the grain silo, thereby changing the sampling position of this sampling device. Before sampling, the two sampling holes 6 are staggered, with the sampling holes 6 extending to a specified depth in the grain. Then, sampling of the grain at the specified depth is performed. During sampling, the suction pump 24 and the motor 3 work synchronously. When the suction pump 24 is working, a designated baffle 14... The bottom is sealed, and the quantitative grain sucked by the suction pump 24 enters the detection cylinder 8 and is temporarily stored in the detection cylinder 8. The grain in the detection cylinder 8 is detected online by the moisture probe 9 and the temperature probe 10. The online detection results are output to the microcontroller 21 in real time. After a single sampling and detection is completed, the baffle seat 14 loses its sealing function on the bottom of the detection cylinder 8, and the grain in the detection cylinder 8 enters a designated sample storage chamber 15 for temporary storage, thereby completing the buffering of the sampled grain at the designated depth. After a single sampling is completed, variable depth sampling can be performed, thereby performing continuous multi-depth sampling.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for grain condition monitoring, comprising a guide frame (1) and a sampling platform (2) that can move in two directions, a motor (3) is installed on the sampling platform (2), characterized in that: A swivel tube (4) is rotatably mounted on the inner wall of the sampling platform (2), and a suction tube (5) is rotatably mounted on the inner wall of the swivel tube (4). Both the swivel tube (4) and the suction tube (5) are driven by a motor (3). A sampling hole (6) is opened at the lower part of both the swivel tube (4) and the suction tube (5). Two sets of turbulence rods (7) are installed on the swivel tube (4). A negative pressure suction assembly adapted to the sampling hole (6) is installed on the guide frame (1). The discharge port of the negative pressure suction assembly is connected to a detection cylinder (8). A moisture probe (9) and a temperature probe (10) are respectively installed inside the detection cylinder (8). The surface of the cylinder (8) is connected to a one-way exhaust pipe (11), the bottom end of the detection cylinder (8) is connected to a sample storage cylinder (12), the inner wall of the sample storage cylinder (12) is rotatably mounted with a rotating shaft (13) driven by a motor, a set of baffle seats (14) arranged in a circular array and suitable for blocking the detection cylinder (8) are mounted on the rotating shaft (13), a sample storage cavity (15) is provided between each pair of baffle seats (14), a sample discharge valve (16) is connected to the bottom surface of the sample storage cylinder (12), and a gas cleaning pump (17) is mounted on the guide frame (1), the air outlet of the gas cleaning pump (17) is connected to the inner cavity of the detection cylinder (8).

2. The sampling device for grain condition monitoring according to claim 1, characterized in that: It also includes a walking platform (18) and two guide rails (19). The walking platform (18) moves along the two guide rails (19). The walking platform (18) is fixedly connected to the guide frame (1). A vertically arranged screw lifting module (20) is installed on the guide frame (1). The sampling table (2) is slidably connected to the guide frame (1). The sampling table (2) is driven by the screw lifting module (20).

3. The sampling device for grain condition monitoring according to claim 2, characterized in that: A microcontroller (21) is installed on the walking platform (18), and the data terminals of the moisture probe (9) and temperature probe (10) are both connected to the microcontroller (21).

4. The sampling device for grain condition monitoring according to claim 1, characterized in that: The output shaft of the motor (3) is connected to a synchronous belt, the suction pipe (5) is connected to the synchronous belt, and a reverse coupling (22) is rotatably connected to the sampling stage (2). A driven bevel tooth is installed on both the suction pipe (5) and the spiral pipe (4), and a reverse bevel tooth is installed on the reverse coupling (22). Both driven bevel teeth are connected to the reverse bevel tooth, and the two driven bevel teeth are respectively located on both sides of the reverse bevel tooth.

5. The sampling device for grain condition monitoring according to claim 1, characterized in that: A cone head is installed on the bottom surface of the spiral tube (4), and the rotation axis (13) of the sampling hole (6) is perpendicular to the axis of the spiral tube (4) and the suction tube (5).

6. The sampling device for grain condition monitoring according to claim 1, characterized in that: The negative pressure suction assembly includes a negative pressure suction channel (23) opened inside the suction pipe (5), a suction pump (24) is installed on the guide frame (1), the suction port of the suction pump (24) is connected to the negative pressure suction channel (23) through a corrugated connecting pipe (25), the negative pressure suction channel (23) is connected to the sampling hole (6) on the suction pipe (5), and the discharge port of the suction pump (24) is connected to the detection cylinder (8).

7. The sampling device for grain condition monitoring according to claim 1, characterized in that: The air inlet of the air purification pump (17) is equipped with a filter.

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