Asphalt mixing station hot material bin sampling device and method

Abstract

The invention belongs to the technical field of material sampling, and particularly relates to a sampling device and method for a hot material bin of an asphalt mixing station. Comprising a bin; a plurality of baffles are arranged in the bin body and used for dividing the interior of the bin body into a plurality of spaces. A material taking opening penetrating into the bin body is formed in the side wall of the bin body. The number of the material taking openings is one added to the number of the baffles. A main valve is mounted in the material taking opening; a main annular sensor is arranged on the outer wall of the bin body; the main annular sensor is coaxial with the circle center of the material taking opening; the bin body is further provided with a material taking and positioning device. The material taking positioning device comprises a positioning base; the two positioning bases are installed on the opposite sides of the bin body. The two ends of the positioning lead screw are connected with the opposite surfaces of the two positioning bases; the positioning screw rod is in threaded connection with a positioning circular block; an electric expansion piece is mounted on one side, close to the bin body, of the positioning circular block; the device can sample materials with different specifications at different spatial positions in the bin, so that the sampling limitation of the device is reduced, and the sampling effect of the device is further improved.

Description

Technical Field

[0001] This invention belongs to the field of material sampling technology, specifically a sampling device and method for hot aggregate bins in asphalt mixing plants. Background Technology

[0002] Hot aggregate bins are the "aggregate storage link" in asphalt mixing plants, containing pure sand and gravel aggregates (such as crushed stone and sand). By testing the aggregate specifications, temperature, moisture content, and other indicators, it can be ensured that when they are mixed with asphalt, they can achieve a qualified mix proportion and quality standards. Hot aggregate bins are usually equipped with several baffles to divide the bin into multiple spaces for storing materials of different specifications. However, existing hot aggregate bin sampling devices in asphalt mixing plants have difficulty sampling materials in different spaces within the bin, resulting in strong limitations in sampling and thus reducing the sampling effectiveness of the device. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a sampling device and method for hot aggregate bins in asphalt mixing plants, which effectively solves the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for a hot aggregate bin in an asphalt mixing plant, comprising a bin body; a plurality of baffles are provided inside the bin body to divide the interior of the bin body into multiple spaces; a material sampling port penetrating into the side wall of the bin body is provided; the number of material sampling ports is the number of baffles plus one; a main valve is installed inside the material sampling port; a main annular sensor is provided on the outer wall of the bin body; the main annular sensor is coaxial with the center of the material sampling port; a material sampling positioning device is also provided on the bin body for sampling the material inside the bin body; the material sampling positioning device includes a positioning base; two positioning bases are installed on opposite sides of the bin body;

[0005] A positioning screw is connected at both ends to the opposite surfaces of two positioning bases; a positioning block is threaded onto the positioning screw; an electric telescopic device is installed on the side of the positioning block near the compartment body.

[0006] A positioning cylinder is installed on the output end of the electric expansion joint; the positioning cylinder has an annular groove on the side near the compartment body;

[0007] A hollow receiving cylinder is fitted into an annular groove; the annular groove and the hollow receiving cylinder are coaxial and slide in contact; a drag-reducing and energy-reducing unit is provided on the positioning cylinder to reduce the impact force when material enters the hollow receiving cylinder; the drag-reducing and energy-reducing unit includes two vent holes symmetrically arranged on the side of the positioning cylinder away from the hopper; the vent holes are connected to the annular groove; a displacement and bonding mechanism is provided on the hollow receiving cylinder to adjust its position to different spaces within the hopper during sampling, and to sample the material in each space; the displacement and bonding mechanism includes a compression spring, which is disposed within the annular groove; one end of the compression spring is fixedly connected to the bottom surface of the annular groove, and the other end is fixedly connected to the hollow receiving cylinder.

[0008] Preferably, two positioning bases are connected to opposing surfaces by positioning cylinders; a positioning block is connected through the positioning cylinders, and the two are slidably engaged; a retaining base is installed on the outer wall of the positioning cylinder; a retaining slide is connected to the side of the retaining base away from the chamber body; the retaining slide is connected through the side of the positioning block near the chamber body; the positioning block and the retaining slide are slidably engaged; a drive motor is installed on one of the positioning bases; the output end of the drive motor is rotatably connected to the positioning lead screw.

[0009] Preferably, the outer diameter of the annular groove is smaller than the outer diameter of the positioning cylinder, and the inner diameter of the annular groove is larger than the inner diameter of the positioning cylinder; the centers of the annular groove and the positioning cylinder are coaxial; the material inlet is located on the moving path of the material inlet hollow cylinder, and the two are coaxial when they are in contact; a secondary annular sensor is connected to the side of the material inlet hollow cylinder near the hopper; the main annular sensor is located on the moving path of the secondary annular sensor, and the two are coaxial when they are in contact, and the two are electrically connected; a secondary valve is installed inside the material inlet hollow cylinder near the hopper.

[0010] Preferably, an adjustment base is installed on the outer wall of the hollow feeding cylinder; an adjustment cylinder is connected to the side of the adjustment base away from the bin body; the adjustment cylinder and the adjustment base are in sliding fit; an adjustment limiting plate is installed at the end of the adjustment cylinder away from the bin body; a first square seat is installed at the end of the adjustment cylinder close to the bin body; an adjustment wheel is installed inside the first square seat; an adjustment spring is sleeved on the adjustment cylinder; one end of the adjustment spring is fixedly connected to the adjustment limiting plate, and the other end is fixedly connected to the adjustment base.

[0011] Preferably, when the adjusting spring is not deformed, the adjusting wheel is in the initial position; the side of the bin is located on the moving path of the adjusting wheel, and when the adjusting wheel is in the initial position, the time it contacts the bin is earlier than the material-retrieving hollow cylinder.

[0012] Preferably, a circular partition is installed inside the positioning cylinder; a bearing is connected to the circular partition; a spiral feeding shaft is installed on the side of the bearing near the bin body; the spiral feeding shaft is coaxial with the center of the hollow feeding cylinder; one end of the spiral feeding shaft faces the bin body, and a drill bit is installed at that end; the feeding port is located on the moving path of the drill bit; a rotary motor is installed inside the positioning cylinder; the output end of the rotary motor is connected to the side of the bearing away from the bin body.

[0013] Preferably, it includes bent pipes installed on the side of the positioning cylinder away from the chamber body; there are two positioning cylinders, one end of each of the two bent pipes is connected to two ventilation holes; the other ends of the two bent pipes face each other and are both facing the outer wall of the positioning cylinder.

[0014] A bending base is installed on the outer wall of the end of the bent pipe facing the positioning cylinder; a guide column is fitted inside the port of the bent pipe facing the outer wall of the positioning cylinder; the guide column and the bent pipe are slidably fitted; a guide square plate is connected to the end of the guide column away from the bent pipe;

[0015] A guide spring is sleeved on the guide column; one end of the guide spring is fixedly connected to the bending base, and the other end is fixedly connected to the guide square plate.

[0016] Preferably, a guide tube is installed on the side of the guide plate near the outer wall of the hollow material receiving cylinder; a guide column is slidably connected inside the guide tube; a second seat is installed on the guide column; an energy-absorbing wheel is connected inside the second seat; the outer wall of the hollow material receiving cylinder is located on the moving path of the energy-absorbing wheel; an energy-absorbing spring is provided inside the guide tube; one end of the energy-absorbing spring is fixedly connected to the bottom surface inside the guide tube, and the other end is fixedly connected to the guide column.

[0017] Preferably, a locking base is installed on the adjusting base; a pressure limiting component is provided on the locking base; the pressure limiting component includes a hollow square tube installed on the locking base; a limiting column is fitted into the port of the hollow square tube near the bin body; the limiting column and the hollow square tube are slidably engaged; a locking plug is installed on one end of the limiting column near the bin body; a limiting spring is sleeved on the limiting column; one end of the limiting spring is fixedly connected to the locking plug, and the other end is fixedly connected to the locking base; a plurality of locking slots are provided on the side of the bin body near the locking plug; the number and position of the locking slots correspond to the material inlet; the locking slots are located on the moving path of the locking plug; a pressing square column is installed on the side of the fixing base near the bin body, and the pressing square column is fitted into the port of the hollow square tube away from the bin body; the pressing square column and the hollow square tube are slidably engaged.

[0018] This invention also provides a method for sampling hot aggregate bins in asphalt mixing plants, comprising the following steps:

[0019] S1. Operate the material picking and positioning device to align and connect the material picking hollow cylinder with the material picking port. The material in the bin is picked up into the material picking hollow cylinder through the material picking port.

[0020] S2. By using the drag reduction and energy reduction unit, the impact force generated when the material enters the hollow feeding cylinder and comes into contact with its inner wall is reduced.

[0021] S3. Control the shifting and bonding mechanism to move the material-taking hollow cylinder horizontally on the silo body to different material-taking ports, thereby enabling the sampling of materials in different spaces within the silo body.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) Start the rotary motor so that its output end drives the spiral feeding shaft to rotate. The blades on the spiral feeding shaft generate friction and thrust with the material. Under the guidance of the spiral surface of the blades, the material moves continuously along the axis of the shaft to roll the material in the bin into the hollow feeding cylinder, thereby completing the sampling operation of the material. By controlling the start operation of the electric telescopic device, the spiral feeding shaft is driven in the bin. Sampling operations are performed on materials at different locations to provide more samples for subsequent testing, thus improving the sampling effect of the device. Simultaneously, the drill bit on the spiral feeding shaft can break through the pushed material, preventing the spiral feeding shaft from being unable to penetrate the material, improving the sampling efficiency and ensuring continuous and stable sampling. By starting the drive motor, its output end drives the positioning screw to rotate, causing the threaded positioning block to move at the upper limit of the positioning cylinder. This, in turn, causes the positioning cylinder on the positioning block to move the hollow feeding cylinder to different feeding ports. The cooperation of the secondary ring sensor on the hollow feeding cylinder and the main ring sensor on the feeding port precisely positions the hollow feeding cylinder, ensuring accurate alignment with the feeding port. This prevents material from falling due to misalignment during sampling. This allows the device to sample materials in different spaces within the silo, reducing sampling limitations and further improving the sampling effect.

[0024] (2) When the limiting column is pushed by the moving extrusion column to move close to the side of the bin, the limiting column enters the locking slot on the current feeding port connected to the feeding hollow cylinder, so that the positioning cylinder and the feeding hollow cylinder are limited and set, so as to avoid the spiral feeding shaft in the positioning cylinder from shaking or dislodging due to non-human factors when it samples the material into the feeding hollow cylinder in the bin, thereby affecting the material sampling operation, thus improving the sampling effect of the device, so that the position of the feeding hollow cylinder will not be affected by external factors, reducing the sampling limitation of the device, ensuring the stability of the feeding hollow cylinder, and thus improving the sampling safety of the device.

[0025] (3) The two energy-absorbing wheels on both sides of the hollow material receiving cylinder are in contact with the outer wall of the hollow material receiving cylinder, so as to position the hollow material receiving cylinder and avoid the instability caused by the shaking of the positioning cylinder on the hollow material receiving cylinder when it moves. At the same time, the resistance of the two when they move is reduced, which improves the stability of the movement of the spiral material receiving shaft driven by the positioning cylinder, further improving the sampling stability of the spiral material receiving shaft, and improving the sampling effect of the device. At the same time, when the spiral material receiving shaft samples in the bin and samples the material into the hollow material receiving cylinder, the material falls into the hollow material receiving cylinder, and the hollow material receiving cylinder is prone to shaking due to non-human factors. The buffer force brought by the energy-absorbing spring can reduce the impact force generated when the hollow material receiving cylinder shakes, so that the impact force generated when the material falls into the hollow material receiving cylinder can be absorbed by the energy-absorbing spring, improving the stability of the hollow material receiving cylinder and avoiding the damage of the sample taken by the shaking of the hollow material receiving cylinder during use, further improving the use effect of the device and reducing the sampling limitations of the device.

[0026] (4) The adjusting wheel on the hollow feeding cylinder moves along the side of the bin that it contacts to control the sampling position of the hollow feeding cylinder. While adjusting the sampling position of the hollow feeding cylinder, it is not necessary to disconnect it from the bin to avoid the material inside the hollow feeding cylinder falling out. When the secondary ring sensor on the hollow feeding cylinder senses other main ring sensors on the bin, it means that the hollow feeding cylinder has been connected to other feeding ports. The main valve can be opened to continue the sampling operation, so that the device can continuously sample different specifications of materials in different spaces. This facilitates the sampling inspection of different specifications of materials in different spaces throughout the bin, further improving the sampling efficiency of the device and reducing the limitations of the device during sampling. The adjusting wheel reduces the resistance caused by the movement of the hollow feeding cylinder in contact with the bin, improves the stability of the hollow feeding cylinder during translation, and avoids excessive resistance during movement that could damage or cause the internal samples to fall out, thereby further improving the sampling effect of the device. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a cross-sectional view of the container body of the present invention;

[0031] Figure 3 This is a schematic diagram of the positioning lead screw structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the locking insert structure of the present invention;

[0033] Figure 5 This is a cross-sectional view of the guide tube of the present invention;

[0034] Figure 6 This is a schematic diagram of the annular groove structure of the present invention;

[0035] Figure 7 This is a cross-sectional view of the locking slot of the present invention;

[0036] Figure 8 This is a cross-sectional view of the hollow cylinder for material handling according to the present invention;

[0037] Figure 9 This is a schematic diagram of the adjusting wheel structure of the present invention;

[0038] Figure 10 This is a cross-sectional view of the positioning cylinder of the present invention;

[0039] Figure 11 This is a cross-sectional view of the ventilation hole of the present invention;

[0040] In the diagram: 1. Bin body; 2. Feed inlet; 3. Main valve; 4. Main annular sensor; 5. Positioning base; 6. Positioning screw; 7. Positioning block; 8. Electric telescopic device; 9. Positioning cylinder; 10. Annular groove; 11. Feeding hollow cylinder; 12. Vent hole; 13. Compression spring; 14. Positioning cylinder; 15. Fixed base; 16. Fixed slide column; 17. Drive motor; 18. Secondary annular sensor; 19. Secondary valve; 20. Adjusting base; 21. Adjusting cylinder; 22. First square seat; 23. Adjusting circle 24. Wheel; 25. Adjusting spring; 26. Circular partition; 27. Spiral feeding shaft; 28. Drill bit; 29. ​​Rotary motor; 30. Bending pipe; 31. Bending base; 32. Guide column; 33. Guide square plate; 34. Guide spring; 35. Guide square tube; 36. Guide square column; 37. Second square seat; 38. Energy-absorbing wheel; 39. Energy-absorbing spring; 40. Locking base; 41. Hollow square tube; 42. Limiting column; 43. Locking block; 44. Limiting spring; 45. Locking slot; 46. Extrusion square column. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] Implementation examples, by Figures 1 to 11The present invention includes a silo body 1; the silo body 1 is provided with several baffles to divide the interior of the silo body 1 into multiple spaces; the side wall of the silo body 1 is provided with a material inlet 2 extending into its interior; the number of material inlets 2 is the number of baffles plus one; a main valve 3 is installed inside the material inlet 2; a main annular sensor 4 is provided on the outer wall of the silo body 1; the main annular sensor 4 is coaxial with the center of the material inlet 2; a material sampling positioning device is also provided on the silo body 1 for sampling the material inside the silo body 1; the material sampling positioning device includes a positioning base 5; two positioning bases 5 are installed on opposite sides of the silo body 1; a positioning screw 6 is connected at both ends to the opposite surfaces of the two positioning bases 5; a positioning block 7 is threaded onto the positioning screw 6; the positioning block 7 is close to the silo body 1. An electric telescopic device 8 is installed on one side; a positioning cylinder 9 is installed on the output end of the electric telescopic device 8; an annular groove 10 is provided on the side of the positioning cylinder 9 near the bin body 1; a hollow picking cylinder 11 is fitted into the annular groove 10; the annular groove 10 and the hollow picking cylinder 11 are coaxial in center and slide together; a resistance reduction and energy reduction unit is provided on the positioning cylinder 9 to reduce the impact force when the material enters the hollow picking cylinder 11; a displacement and fitting mechanism is provided on the hollow picking cylinder 11 to adjust its position to different spaces in the bin during the sampling process and sample the material in each space; two positioning bases 5 are connected to positioning cylinders 14 on opposite sides; positioning blocks 7 are connected through the positioning cylinders 14. The positioning cylinder 9 and the positioning block 7 are in a sliding fit; a fixed base 15 is installed on the outer wall of the positioning cylinder 9; a fixed sliding column 16 is connected to the side of the fixed base 15 away from the bin 1; the fixed sliding column 16 is connected through the positioning block 7 near the bin 1; the positioning block 7 and the fixed sliding column 16 are in a sliding fit; a drive motor 17 is installed on one of the positioning bases 5; the output end of the drive motor 17 is rotatably connected to the positioning screw 6; the outer diameter of the annular groove 10 is smaller than the outer diameter of the positioning cylinder 9, and the inner diameter of the annular groove 10 is larger than the inner diameter of the positioning cylinder 9; the centers of the annular groove 10 and the positioning cylinder 9 are coaxial; the material receiving port 2 is located on the moving path of the material receiving hollow cylinder 11, and the centers of the two are coaxial when they are in contact; the side of the material receiving hollow cylinder 11 near the bin 1 is connected to the positioning block 7 near the bin 1. A secondary ring sensor 18 is connected; a primary ring sensor 4 is located on the moving path of the secondary ring sensor 18, and the two are coaxial when in contact, and are electrically connected; a secondary valve 19 is installed inside the hollow feeding cylinder 11 near the bin body 1; a circular partition 25 is installed inside the positioning cylinder 9; a bearing is connected to the circular partition 25; a spiral feeding shaft 26 is installed on the side of the bearing near the bin body 1; the spiral feeding shaft 26 is coaxial with the center of the hollow feeding cylinder 11; one end of the spiral feeding shaft 26 faces the bin body 1, and a drill bit 27 is installed at this end; the feeding port 2 is located on the moving path of the drill bit 27; a rotary motor 28 is installed inside the positioning cylinder 9; the output end of the rotary motor 28 is connected to the side of the bearing away from the bin body 1.

[0043] Materials of different specifications are located in different spaces within the silo 1, separated by baffles to prevent mixing and ensure proper use. When sampling is required from different spaces within the silo 1, the electric telescopic device 8 is activated, causing the positioning cylinder 9 at its output end to move closer to the silo 1. The positioning cylinder 9 is then limited at the positioning block 7 by the fixed sliding pin 16 on the fixed base 15, thus restricting its movement and preventing instability caused by swaying during movement, thereby improving positioning accuracy. The stability of the movement of cylinder 9 is ensured by the positioning cylinder 9 moving towards the hopper 11 under the action of the compression spring 13, until the hollow cylinder 11 aligns and contacts the material inlet 2 on the side of the hopper 1. At this point, the main annular sensor 4 on the hopper 1 and the secondary annular sensor 18 on the hollow cylinder 11 align and contact, thus sending a signal to the control center. The control center then sends a start signal to the main valve 3 inside the material inlet 2 and the secondary valve 19 inside the hollow cylinder 11, causing the secondary valve 19 and the main valve 3 to open synchronously, thereby enabling... The hollow cylinder 11 for material collection can communicate with the interior of the hopper 1 through the material collection port 2. At this time, by continuing to control the activation of the electric telescopic device 8, the hollow cylinder 11 is unable to move due to contact with the side of the hopper 1. This causes the annular groove 10 on the positioning cylinder 9 to move at the hollow cylinder 11, limiting the movement of the compression spring 13. This puts the compression spring 13 in a buffer state, strengthening the contact strength between the hollow cylinder 11 and the hopper 1, preventing dislocation during the connection process between the hollow cylinder 11 and the material collection port 2, which would affect the sampling process and thus reduce the sampling limitations of the device; making the positioning... The cylinder 9 continues to move closer to the silo 1, causing the spiral feeding shaft 26 inside the positioning cylinder 9 to gradually extend into the silo 1. By starting the rotary motor 28, its output end drives the spiral feeding shaft 26 to rotate. The blades on the spiral feeding shaft 26 generate friction and thrust with the material. Guided by the spiral surface of the blades, the material moves continuously along the axis of the shaft, which is used to roll the material in the silo 1 into the hollow feeding cylinder 11, thereby completing the sampling operation of the material. By controlling the start operation of the electric telescopic device 8, the spiral feeding shaft 26 is driven into the silo 1.Sampling operations are performed on materials at different locations to provide more samples for subsequent testing, thus improving the sampling effect of the device. Simultaneously, the drill bit 27 installed on the spiral feeding shaft 26 can break through the pushed material, preventing the spiral feeding shaft 26 from failing to penetrate the material, thereby improving the sampling efficiency of the device and ensuring continuous and stable sampling. By starting the drive motor 17, its output end drives the positioning screw 6 to rotate, causing the threaded positioning block 7 to move at its upper limit on the positioning cylinder 14, thereby causing the positioning circle on the positioning block 7 to... The cylinder 9 drives the hollow feeding cylinder 11 to operate at different feeding ports 2. Through the cooperation of the secondary ring sensor 18 on the hollow feeding cylinder 11 and the main ring sensor 4 on the feeding port 2, the stopping position of the hollow feeding cylinder 11 is accurately located, so that it can be precisely docked with the feeding port 2. This avoids material falling due to docking errors with the feeding port 2 during the sampling process. This allows the device to sample materials in different spaces in the silo during use, reducing the limitations of the device's sampling and further improving the sampling effect of the device.

[0044] The drag reduction and energy reduction unit of this embodiment includes two ventilation holes 12, which are symmetrically arranged on the side of the positioning cylinder 9 away from the chamber 1. The ventilation holes 12 are connected to the annular groove 10. A bent pipe 29 is installed on the side of the positioning cylinder 9 away from the chamber 1. There are two positioning cylinders 9, and one end of each of the two bent pipes 29 is connected to the two ventilation holes 12. The other ends of the two bent pipes 29 face each other and are both facing the outer wall of the positioning cylinder 9. A bent base 30 is installed on the outer wall of the end of the bent pipe 29 facing the positioning cylinder 9. A guide column 31 is fitted into the port of the bent pipe 29 facing the outer wall of the positioning cylinder 9. The guide column 31 and the bent pipe 29 are slidably fitted together. A guide plate 32 is connected to one end of the pipe away from the bend 29. A guide spring 33 is sleeved on the guide column 31. One end of the guide spring 33 is fixedly connected to the bend base 30, and the other end is fixedly connected to the guide plate 32. A guide tube 34 is installed on the side of the guide plate 32 near the outer wall of the hollow cylinder 11. A guide column 35 is slidably connected inside the guide tube 34. A second seat 36 is installed on the guide column 35. An energy-absorbing wheel 37 is connected inside the second seat 36. The outer wall of the hollow cylinder 11 is located on the moving path of the energy-absorbing wheel 37. An energy-absorbing spring 38 is provided inside the guide tube 34. One end of the energy-absorbing spring 38 is fixedly connected to the bottom surface of the guide tube 34, and the other end is fixedly connected to the guide column 35.

[0045] When the hollow feeding cylinder 11 aligns and contacts the feeding port 2 on the outer wall of the silo 1, the sampling process requires the positioning cylinder 9 to continue moving closer to the silo 1. This causes the annular groove 10 on the positioning cylinder 9 to move at the hollow feeding cylinder 11, allowing the spiral feeding shaft 26 inside the positioning cylinder 9 to gradually extend into the silo 1 to sample the material. This causes the hollow feeding cylinder 11 to compress and reduce the space inside the annular groove 10, forcing the gas inside into the vent hole 12, which then enters the bent pipe 29 and acts on it. The guide column 31 inside moves closer to the outer wall of the hollow material receiving cylinder 11, causing the guide spring 33 to be in a buffered state. This, in turn, drives the guide square plate 32 on the guide column 31 to move closer to the outer wall of the hollow material receiving cylinder 11. Under the action of the guide square cylinder 34, the energy-absorbing spring 38, and the guide column 35, the guide square plate 32 drives the energy-absorbing wheel 37 on the second square seat 36 to move closer to and contact the outer wall of the hollow material receiving cylinder 11. This ensures that both energy-absorbing wheels 37 on both sides of the hollow material receiving cylinder 11 are in contact with the opposite outer wall of the hollow material receiving cylinder 11. This allows for the positioning of the hollow feeding cylinder 11, preventing instability caused by shaking of the positioning cylinder 9 during movement. It also reduces the resistance during movement, improving the stability of the spiral feeding shaft 26 driven by the positioning cylinder 9. This further enhances the sampling stability of the spiral feeding shaft 26, improving the sampling effect of the device. Simultaneously, when the spiral feeding shaft 26 samples within the hopper 1 and transfers material into the hollow feeding cylinder 11, any material falling into the hollow feeding cylinder 11... Due to non-human factors, the hollow material receiving cylinder 11 is prone to shaking. The buffering force provided by the energy-absorbing spring 38 can reduce the impact force generated when the hollow material receiving cylinder 11 shakes. This means that the impact force generated when the material falls into the hollow material receiving cylinder 11 can be absorbed by the energy-absorbing spring 38, improving the stability of the hollow material receiving cylinder 11 during use. It also prevents the shaking of the hollow material receiving cylinder 11 during use from damaging the sample, further improving the effectiveness of the device and reducing the sampling limitations of the device.

[0046] The repositioning and bonding mechanism of this embodiment includes a compression spring 13, which is disposed in an annular groove 10; one end of the compression spring 13 is fixedly connected to the bottom surface of the annular groove 10, and the other end is fixedly connected to the material-receiving hollow cylinder 11; an adjustment base 20 is installed on the outer wall of the material-receiving hollow cylinder 11; an adjustment cylinder 21 is connected to the side of the adjustment base 20 away from the bin 1; the adjustment cylinder 21 and the adjustment base 20 are in sliding fit; an adjustment limit plate is installed at the end of the adjustment cylinder 21 away from the bin 1; the adjustment cylinder 21... A first square seat 22 is installed near one end of the bin body 1; an adjusting wheel 23 is installed inside the first square seat 22; an adjusting spring 24 is sleeved on the adjusting cylinder 21; one end of the adjusting spring 24 is fixedly connected to the adjusting limit plate, and the other end is fixedly connected to the adjusting base 20; when the adjusting spring 24 is not deformed, the adjusting wheel 23 is in the initial position; the side of the bin body 1 is located on the moving path of the adjusting wheel 23, and when the adjusting wheel 23 is in the initial position, the time it contacts the bin body 1 is earlier than the material taking hollow cylinder 11;

[0047] When the hollow material receiving cylinder 11 moves closer to the silo body 1, the adjusting wheel 23 on the hollow material receiving cylinder 11 first contacts the side of the silo body 1. As the hollow material receiving cylinder 11 continues to move, the adjusting base 20 on it moves to a limited position at the adjusting cylinder 21, so that the adjusting spring 24 is in a buffer state, which is used to strengthen the contact strength between the adjusting wheel 23 and the silo body 1 and the frictional force between the two. After the material in this space in the silo body 1 has been sampled, if a sampling inspection method is adopted in order to improve the sampling and testing efficiency, then it is necessary to sample from inside the hollow material receiving cylinder 11. Materials of different sizes and specifications are located in different spaces. The electric telescopic device 8 can be operated to reset and move the positioning cylinder 9 at its output end until the compression spring 13 no longer deforms. Then, by controlling the rotation of the positioning screw 6, the threaded positioning block 7 moves to its upper limit on the positioning cylinder 14, thereby moving the material-retrieving hollow cylinder 11 on the positioning cylinder 9. Since the adjusting wheel 23 on the material-retrieving hollow cylinder 11 is already in contact with the side of the bin 1, the movement of the material-retrieving hollow cylinder 11 causes its side to contact the side of the bin 1. When in contact, the adjusting wheel 23 on the hollow receiving cylinder 11 moves along the side of the hopper 1 it contacts to control the sampling position of the hollow receiving cylinder 11. While adjusting the sampling position of the hollow receiving cylinder 11, it is not necessary to disconnect it from the hopper 1 to prevent material inside the hollow receiving cylinder 11 from falling out. When the secondary ring sensor 18 on the hollow receiving cylinder 11 senses other primary ring sensors 4 on the hopper 1, it indicates that the hollow receiving cylinder 11 has connected with other receiving ports 2, and the main valve 3 can be opened to continue the process. The sampling operation enables the device to continuously sample materials of different specifications in different spaces, facilitating the sampling inspection of materials of different specifications in different spaces throughout the entire silo 1, further improving the sampling efficiency of the device and reducing the limitations of the device during sampling; under the action of the adjusting wheel 23, the resistance caused by the movement of the material picking hollow cylinder 11 in contact with the silo 1 is reduced, improving the stability of the material picking hollow cylinder 11 during translation, and avoiding excessive resistance during its movement that could damage or cause the internal samples to fall out, thereby further improving the sampling effect of the device.

[0048] In this embodiment, a locking base 39 is installed on the adjusting base 20; a pressure limiting component is provided on the locking base 39; the pressure limiting component includes a hollow square tube 40, which is installed on the locking base 39; a limiting post 41 is fitted into the port of the hollow square tube 40 near the compartment 1; the limiting post 41 and the hollow square tube 40 are in sliding fit; a locking insert 42 is installed on one end of the limiting post 41 near the compartment 1; a limiting spring 43 is sleeved on the limiting post 41; one end of the limiting spring 43 is connected to... The locking block 42 is fixedly connected at one end and the locking base 39 at the other end; the bin body 1 is provided with a number of locking slots 44 on the side near the locking block 42; the number and position of the locking slots 44 correspond to the material inlet 2; the locking slots 44 are located on the moving path of the locking block 42; the fixed base 15 is equipped with an extrusion square column 45 on the side near the bin body 1, and the extrusion square column 45 is fitted into the port of the hollow square tube 40 away from the bin body 1; the extrusion square column 45 and the hollow square tube 40 are in sliding fit.

[0049] When the hollow cylinder 11 contacts the outer wall of the hopper 1, the positioning cylinder 9 moves on the hollow cylinder 11, causing the fixing base 15 on the positioning cylinder 9 to move closer to the hopper 1. This causes the extrusion column 45 on the fixing base 15 to move closer to the hopper 1, limiting the movement of the extrusion column 45 within the hollow square tube 40 on the hollow cylinder 11. This contacts and extrudes the limiting column 41 within the hollow square tube 40, limiting its movement within the hollow square tube 40. This puts the limiting spring 43 in a buffer state, allowing it to reset and move the limiting column 41 and the extrusion column 45 back to their original positions. When the limiting column 41 is pushed closer to the hopper by the moving extrusion column 45... When the body 1 moves to the side, the limiting column 41 enters the locking slot 44 on the feeding port 2 currently connected to the feeding hollow cylinder 11, thereby limiting the positioning cylinder 9 and the feeding hollow cylinder 11. This prevents the spiral feeding shaft 26 inside the positioning cylinder 9 from shaking or dislodging due to non-human factors when sampling materials into the feeding hollow cylinder 11 within the hopper body 1, thus improving the sampling effect of the device. It also ensures that the position of the feeding hollow cylinder 11 will not change due to external factors, reducing the sampling limitations of the device and ensuring the stability of the feeding hollow cylinder 11, thereby improving the sampling safety of the device.

[0050] This invention also provides a method for sampling hot aggregate bins in asphalt mixing plants, comprising the following steps:

[0051] S1. Operate the material picking and positioning device to align and connect the material picking hollow cylinder 11 with the material picking port 2. The material in the bin 1 is picked up into the material picking hollow cylinder 11 through the material picking port 2.

[0052] S2. By using the drag reduction and energy reduction unit, the impact force generated when the material enters the hollow feeding cylinder 11 and comes into contact with its inner wall is reduced.

[0053] S3. Control the shifting and bonding mechanism to move the material-taking hollow cylinder 11 on the bin body 1 to different positions of the material-taking port 2, so as to realize the sampling of materials in different spaces within the bin body 1.

[0054] 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.

[0055] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for hot aggregate bins in an asphalt mixing plant, comprising a bin body; the bin body is provided with a plurality of baffles for dividing the interior of the bin body into multiple spaces; characterized in that: The side wall of the silo is provided with a material inlet that extends into its interior; the number of material inlets is the number of baffles plus one; a main valve is installed inside each material inlet; a main annular sensor is provided on the outer wall of the silo; the main annular sensor is coaxial with the center of the material inlet; the silo is also provided with a material sampling positioning device for sampling the material inside the silo; the material sampling positioning device includes a positioning base; two positioning bases are installed on opposite sides of the silo. A positioning screw is connected at both ends to the opposite surfaces of two positioning bases; a positioning block is threaded onto the positioning screw; an electric telescopic device is installed on the side of the positioning block near the compartment body. A positioning cylinder is installed on the output end of the electric expansion joint; the positioning cylinder has an annular groove on the side near the compartment body; A hollow receiving cylinder is fitted into an annular groove; the annular groove and the hollow receiving cylinder are coaxial and slide in contact; a drag-reducing and energy-reducing unit is provided on the positioning cylinder to reduce the impact force when material enters the hollow receiving cylinder; the drag-reducing and energy-reducing unit includes two vent holes symmetrically arranged on the side of the positioning cylinder away from the hopper; the vent holes are connected to the annular groove; a displacement and bonding mechanism is provided on the hollow receiving cylinder to adjust its position to different spaces within the hopper during sampling, and to sample the material in each space; the displacement and bonding mechanism includes a compression spring, which is disposed within the annular groove; one end of the compression spring is fixedly connected to the bottom surface of the annular groove, and the other end is fixedly connected to the hollow receiving cylinder.

2. The sampling device for hot aggregate bins in an asphalt mixing plant according to claim 1, characterized in that: Two positioning bases are connected to opposing surfaces by positioning cylinders; a positioning block is connected through the positioning cylinders, and the two are slidably engaged; a fixing base is installed on the outer wall of the positioning cylinder; a fixing slide is connected to the side of the fixing base away from the chamber body; the fixing slide is connected through the side of the positioning block near the chamber body; the positioning block and the fixing slide are slidably engaged; a drive motor is installed on one of the positioning bases; the output end of the drive motor is rotatably connected to the positioning lead screw.

3. The sampling device for hot aggregate bins in an asphalt mixing plant according to claim 1, characterized in that: The outer diameter of the annular chute is smaller than the outer diameter of the positioning cylinder, and the inner diameter of the annular chute is larger than the inner diameter of the positioning cylinder; the centers of the annular chute and the positioning cylinder are coaxial; the material inlet is located on the moving path of the material inlet hollow cylinder, and the two are coaxial when they are in contact; a secondary annular sensor is connected to the side of the material inlet hollow cylinder near the hopper; the main annular sensor is located on the moving path of the secondary annular sensor, and the two are coaxial when they are in contact, and the two are electrically connected; a secondary valve is installed inside the material inlet hollow cylinder near the hopper.

4. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 2, characterized in that: An adjustment base is installed on the outer wall of the hollow material receiving cylinder; an adjustment cylinder is connected to the side of the adjustment base away from the bin body; the adjustment cylinder and the adjustment base are in sliding fit; an adjustment limit plate is installed at the end of the adjustment cylinder away from the bin body; a first square seat is installed at the end of the adjustment cylinder close to the bin body; an adjustment wheel is installed inside the first square seat; an adjustment spring is sleeved on the adjustment cylinder; one end of the adjustment spring is fixedly connected to the adjustment limit plate, and the other end is fixedly connected to the adjustment base.

5. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 4, characterized in that: When the adjusting spring is not deformed, the adjusting wheel is in the initial position; the side of the bin is located on the moving path of the adjusting wheel, and when the adjusting wheel is in the initial position, it contacts the bin earlier than the material-retrieving hollow cylinder.

6. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 1, characterized in that: A circular partition is installed inside the positioning cylinder; a bearing is connected to the circular partition; a spiral feeding shaft is installed on the side of the bearing near the bin body; the spiral feeding shaft is coaxial with the center of the hollow feeding cylinder; one end of the spiral feeding shaft faces the bin body and is equipped with a drill bit; the feeding port is located on the moving path of the drill bit; a rotary motor is installed inside the positioning cylinder; the output end of the rotary motor is connected to the side of the bearing away from the bin body.

7. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 1, characterized in that: It includes bent pipes, installed on the side of the positioning cylinder away from the hopper; there are two positioning cylinders, one end of each of the two bent pipes is connected to two ventilation holes; the other ends of the two bent pipes face each other, both towards the outer wall of the positioning cylinder; A bending base is installed on the outer wall of the end of the bent pipe facing the positioning cylinder; a guide column is fitted inside the port of the bent pipe facing the outer wall of the positioning cylinder; the guide column and the bent pipe are slidably fitted; a guide square plate is connected to the end of the guide column away from the bent pipe; A guide spring is sleeved on the guide column; one end of the guide spring is fixedly connected to the bending base, and the other end is fixedly connected to the guide square plate.

8. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 7, characterized in that: A guide tube is installed on the side of the guide plate near the outer wall of the hollow material receiving cylinder; a guide column is slidably connected inside the guide tube; a second seat is installed on the guide column; an energy-absorbing wheel is connected inside the second seat; the outer wall of the hollow material receiving cylinder is located on the moving path of the energy-absorbing wheel; an energy-absorbing spring is provided inside the guide tube; one end of the energy-absorbing spring is fixedly connected to the bottom surface inside the guide tube, and the other end is fixedly connected to the guide column.

9. A sampling device for hot aggregate bins in an asphalt mixing plant according to claim 4, characterized in that: A locking base is installed on the adjusting base; a pressure limiting component is provided on the locking base; the pressure limiting component includes a hollow square tube installed on the locking base; a limiting column is fitted into the port of the hollow square tube near the bin body; the limiting column and the hollow square tube are in sliding fit; a locking plug is installed on one end of the limiting column near the bin body; a limiting spring is sleeved on the limiting column; one end of the limiting spring is fixedly connected to the locking plug, and the other end is fixedly connected to the locking base; a number of locking slots are provided on the side of the bin body near the locking plug; the number and position of the locking slots correspond to the material inlet; the locking slots are located on the moving path of the locking plug; a pressing square column is installed on the side of the fixing base near the bin body, and the pressing square column is fitted into the port of the hollow square tube away from the bin body; the pressing square column and the hollow square tube are in sliding fit.

10. A method for sampling hot aggregate bins in an asphalt mixing plant, using the sampling device for hot aggregate bins in an asphalt mixing plant as described in claim 1, characterized in that... Including the following steps: S1. Operate the material picking and positioning device to align and connect the material picking hollow cylinder with the material picking port. The material in the bin is picked up into the material picking hollow cylinder through the material picking port. S2. By using the drag reduction and energy reduction unit, the impact force generated when the material enters the hollow feeding cylinder and comes into contact with its inner wall is reduced. S3. Control the shifting and bonding mechanism to move the material-taking hollow cylinder horizontally on the silo body to different material-taking ports, thereby enabling the sampling of materials in different spaces within the silo body.

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