Full-automatic fuel sampling device and sampling method based on biomass fuel

Abstract

The invention discloses a full-automatic fuel sampling device which comprises a sampling mechanism, the sampling mechanism comprises a plurality of telescopic sampling assemblies, the telescopic sampling assemblies are symmetrically installed on the two sides of a main sampling cylinder pipe at equal intervals, and each telescopic sampling assembly comprises an auxiliary sampling cylinder pipe, a sleeve pipe and an auger blade; the auxiliary sampling tube is in sliding connection with the main sampling tube, the sleeves are rotatably mounted in the auxiliary sampling tube, the auger blades are fixedly mounted on the sleeves, the driving shaft is rotatably mounted in the main sampling tube and can synchronously drive the sleeves to rotate, a convex column is fixedly mounted at one end of the auxiliary sampling tube, and the convex column is fixedly mounted at the other end of the auxiliary sampling tube. The two connecting rods are fixedly connected with the multiple rotating discs, and one ends of the two connecting rods are fixedly connected with the rotating ring. Through the overall structure arrangement, biomass fuel at different depths can be synchronously collected, the situation that manual collection results are inaccurate is avoided, and the fair and just sampling requirements in detection are met.

Description

Technical Field

[0001] The invention relates to the field of full-automatic fuel sampling devices, and in particular to a full-automatic fuel sampling device. Background Art

[0003] There are currently two sources of biomass fuel in industry: one is processed biomass fuel to make a certain granular fuel; the other is the original ecological fuel, which has not been processed into a certain form of fuel. These fuels include wood chips, branches, boards, leaves, bark and other strips, as well as leaves, sawdust and other fragments. In specific production, there will be steps involved in sampling and testing raw materials, which is of great significance to the overall production. In order to ensure the accuracy of the sampling results, it is generally necessary to control variables, change the collection position and collection depth, and compare the sampling data to obtain the characteristics of the biomass fuel. However, in the existing biomass fuel sampling process, single-point sampling is generally performed manually. Not only is the sampling time and process more complicated, but manual sampling cannot guarantee synchronous sampling at different sampling points. The sampling results are greatly affected by human factors and cannot meet the fair and just sampling requirements in testing. Summary of the invention

[0004] The purpose of the present application is to provide a fully automatic fuel sampling device, which provides a sampling mechanism, installs telescopic sampling components at different positions on the total sampling tube of the sampling mechanism, arranges convex columns on the telescopic sampling components, installs a turntable in the total sampling tube, and arranges an arc frame at the lower end of the turntable. The upper end of the convex column is inserted into the corresponding arc frame. The turntable can be driven by the convex column to complete the telescopic sampling on the total sampling tube. A driving shaft is installed in the total sampling tube, which can synchronously drive the sleeve and the auger blade in the telescopic sampling component to rotate, so as to sample biomass fuel. After the sampling mechanism is inserted into the biomass fuel, multiple telescopic sampling components at different positions are driven to extend and synchronous sampling is performed, so that biomass fuels at different depths can be collected synchronously, thereby avoiding the situation that the results of manual collection are inaccurate and meeting the fair and just sampling requirements in the detection. At the same time, the present invention is simple to operate, takes a short time to collect samples, and greatly improves the sampling efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a fully automatic fuel sampling device, comprising a sampling mechanism, wherein the sampling mechanism comprises a main sampling tube, a driving shaft, a second motor, a plurality of telescopic sampling components, a plurality of turntables, two connecting rods and a rotating ring, wherein the plurality of telescopic sampling components are symmetrically and equidistantly installed on both sides of the main sampling tube, wherein the telescopic sampling component comprises an auxiliary sampling tube, a sleeve and an auger blade, wherein the auxiliary sampling tube is slidably connected to the main sampling tube, the sleeve is rotatably installed in the auxiliary sampling tube, the auger blade is fixedly installed on the sleeve, the driving shaft is rotatably installed inside the main sampling tube, and the second The motor is fixedly mounted on the upper end of the total sampling tube, the output end of the second motor passes through the upper end of the total sampling tube and is fixedly connected to the drive shaft, the drive shaft can synchronously drive multiple sleeves to rotate, one end of the auxiliary sampling tube is fixedly mounted with a boss, multiple turntables are equidistantly rotatably mounted on the inner wall of the total sampling tube, the lower ends of the multiple turntables are fixedly mounted with arc frames, the upper ends of each of the bosses are inserted into the corresponding arc frames, the two connecting rods are fixedly connected to the multiple turntables, the upper end of the total sampling tube is provided with two arc openings, one end of the two connecting rods passes through the corresponding arc openings and is fixedly connected to the rotating ring.

[0006] Preferably, a plurality of third bevel gears are fixedly installed on the driving shaft at equal intervals, a plurality of mounting plates are fixedly installed on the inner wall of the total sampling tube, a rotating shaft is rotatably installed on the mounting plate, a fourth bevel gear is fixedly installed on one end of the rotating shaft, each of the fourth bevel gears is meshed with the corresponding third bevel gear, and the other end of each of the rotating shafts is inserted into the corresponding sleeve and is slidably connected thereto.

[0007] Preferably, a sample outlet is provided at one end of the auxiliary sampling tube, a plurality of sample collecting boxes are fixedly installed on the inner wall of the main sampling tube, each of the sample collecting boxes is fixedly installed below the corresponding sample outlet, a plurality of sampling ports are provided on the side wall of the main sampling tube, the positions of the plurality of sampling ports respectively correspond to the positions of the plurality of sample collecting boxes, and a sampling port cover is snap-fitted into the sampling port.

[0008] Preferably, one end of the sleeve is inserted through one end of the auxiliary sampling tube, and a soil breaking cone is fixedly installed on one end of the sleeve.

[0009] Preferably, the distance between one end of the arc frame and the axis of the turntable gradually decreases from the other end.

[0010] Preferably, it also includes an outer shell, a cylinder and a lifting frame, the lifting frame is slidably installed inside the outer shell, the cylinder is fixedly installed on the upper end of the outer shell, the telescopic end of the cylinder passes through the upper end of the outer shell and is fixedly connected to the lifting frame, and two sampling mechanisms are provided, and both of the two sampling mechanisms are installed on the lifting frame.

[0011] Preferably, two transverse frames are slidably installed in the lifting frame, and the two sampling mechanisms are respectively fixedly installed on the two transverse frames, and screw sliders are fixedly installed inside the two transverse frames. A bidirectional lead screw is rotatably installed in the lifting frame, and the bidirectional lead screw passes through the two lead screw sliders and is threadedly matched with the two lead screw sliders. A first bevel gear is fixedly installed in the middle of the bidirectional lead screw, and a first motor is fixedly installed on the upper end of the lifting frame, and the output end of the first motor passes through the upper end of the lifting frame, and a second bevel gear is fixedly installed on the output end of the first motor, and the second bevel gear is meshed with the first bevel gear.

[0012] Preferably, both ends of the bidirectional screw rod are provided with threads, and the threads at both ends of the bidirectional screw rod have the same size and opposite directions, and the two screw sliders are respectively matched with the threads at both ends of the bidirectional screw rod.

[0013] Preferably, the lower end of the total sampling tube is arranged in a cone shape, the width of the inner cavity of the shell is greater than the diameter of the total sampling tube, and the height of the inner cavity of the shell is greater than the length of the total sampling tube.

[0014] Preferably, the present invention also provides a method for sampling biomass fuel using the fuel full-automatic sampling device, the method comprising the following steps: Start the first motor, and drive the bidirectional screw to rotate through the transmission of the first bevel gear and the second bevel gear, so as to drive the two transverse frames to move in different directions along the lifting frame, and adjust the distance between the two sampling mechanisms as needed; Place the shell above the biomass fuel, start the cylinder, push the lifting frame to move downward along the shell, drive the two sampling mechanisms to move out of the inner cavity of the shell, and insert the two total sampling tubes into the biomass fuel until the two total sampling tubes are completely immersed in the biomass fuel; The rotating ring is driven to rotate, and the multiple turntables are driven to rotate synchronously through the transmission of the connecting rod. The multiple arc frames act on the corresponding convex columns to push one end of the telescopic sampling assembly to extend out of the total sampling tube, and one end of the telescopic sampling assembly is inserted into the biomass fuel; The second motor is started, and the second motor drives the driving shaft to rotate, and drives the rotating shaft to rotate through the transmission of the third bevel gear and the fourth bevel gear. The rotating shaft acts on the casing, drives the casing and the auger blades to rotate, and samples the biomass fuel; After the sampling is completed, the rotating ring is rotated in the opposite direction to drive the sampling mechanism to be completely retracted into the total sampling tube, and the cylinder is started again to drive the sampling mechanism to be retracted into the outer shell, and the collected biomass sample can be taken out subsequently.

[0015] In summary, the technical effects and advantages of the present invention are as follows: 1. In the present invention, a sampling mechanism is provided, and telescopic sampling components are installed at different positions on the total sampling tube of the sampling mechanism, a convex column is provided on the telescopic sampling component, a turntable is installed in the total sampling tube, an arc frame is provided at the lower end of the turntable, and the upper end of the convex column is inserted into the corresponding arc frame. The turntable can be driven by the convex column to complete the telescopic sampling component on the total sampling tube to complete the telescopic sampling. A driving shaft is installed in the total sampling tube, which can synchronously drive the sleeve and the auger blade in the telescopic sampling component to rotate, and the sampling of biomass fuel is carried out. After the sampling mechanism is inserted into the biomass fuel, a plurality of telescopic sampling components at different positions are driven to extend and synchronous sampling is carried out, and biomass fuels at different depths can be collected synchronously, avoiding the situation that the manual collection results are inaccurate, and meeting the fair and just sampling requirements in the detection. At the same time, the present invention is simple to operate, the sample collection time is short, and the sampling efficiency is greatly improved; 2. In the present invention, a shell, a cylinder and a lifting frame are provided. The lifting frame is slidably installed inside the shell, the cylinder is fixedly installed at the upper end of the shell, the telescopic end of the cylinder is inserted through the upper end of the shell and is fixedly connected to the lifting frame, two sampling mechanisms are provided, and both sampling mechanisms are installed on the lifting frame. The sampling mechanisms can be driven to rise and fall by the cylinder, so that the sampling mechanism can be conveniently inserted into the biomass fuel for sampling during use, and the sampling mechanism can be conveniently put into the shell after use to avoid contact; 3. In the present invention, two transverse frames are slidably installed in the lifting frame, and two sampling mechanisms are fixedly installed on the two transverse frames respectively. Lead screw sliders are fixedly installed inside the two transverse frames, and a bidirectional lead screw is rotatably installed in the lifting frame. The bidirectional lead screw is threadedly matched with the two lead screw sliders, and a first bevel gear is fixedly installed in the middle of the bidirectional lead screw. A first motor is fixedly installed on the upper end of the lifting frame, and the output end of the first motor passes through the upper end of the lifting frame, and a second bevel gear is fixedly installed on the output end of the first motor, and the second bevel gear is meshed with the first bevel gear. By starting the first motor, the bidirectional lead screw is driven to rotate through the transmission of the first bevel gear and the second bevel gear, thereby driving the two transverse frames to move in different directions along the lifting frame, adjusting the distance between the two sampling mechanisms as needed, and collecting biomass fuel at two different positions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the sampling mechanism of the present invention; Figure 2It is one of the schematic cross-sectional structures of the sampling mechanism of the present invention; Figure 3 The second schematic diagram of the cross-section structure of the sampling mechanism of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a schematic diagram of the connection structure of the turntable of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 7 It is a schematic diagram of the cutaway structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0018] In the figure: 1, housing; 2, cylinder; 3, lifting frame; 4, transverse frame; 401, screw slider; 5, bidirectional screw; 501, first bevel gear; 6, first motor; 601, second bevel gear; 7, sampling mechanism; 701, main sampling tube; 702, drive shaft; 703, second motor; 704, third bevel gear; 705, mounting plate; 706, telescopic sampling assembly; 7061, auxiliary sampling tube; 7062, sleeve; 7063, auger blade; 7064, soil breaking cone; 7065, sample outlet; 7066, boss; 707, rotating shaft; 708, fourth bevel gear; 709, turntable; 710, connecting rod; 711, rotating ring; 712, sample collection box; 713, sampling port cover; 714, arc frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Reference Figure 1-Figure 5The fuel fully automatic sampling device shown in the figure comprises a sampling mechanism 7, wherein the sampling mechanism 7 comprises a main sampling tube 701, a driving shaft 702, a second motor 703, a plurality of telescopic sampling assemblies 706, a plurality of turntables 709, two connecting rods 710 and a rotating ring 711, wherein the plurality of telescopic sampling assemblies 706 are symmetrically and equidistantly installed on both sides of the main sampling tube 701, wherein the telescopic sampling assembly 706 comprises an auxiliary sampling tube 7061, a sleeve 7062 and an auger blade 7063, wherein the auxiliary sampling tube 7061 is slidably connected to the main sampling tube 701, and the sleeve 7062 is rotatably installed in the auxiliary sampling tube 7061. The auger blade 7063 is fixedly mounted on the sleeve 7062, the drive shaft 702 is rotatably mounted inside the total sampling tube 701, the second motor 703 is fixedly mounted on the upper end of the total sampling tube 701, the output end of the second motor 703 passes through the upper end of the total sampling tube 701 and is fixedly connected to the drive shaft 702, one end of the auxiliary sampling tube 7061 is fixedly mounted with a convex column 7066, a plurality of the turntables 709 are rotatably mounted on the inner wall of the total sampling tube 701 at equal intervals, the lower ends of the plurality of the turntables 709 are fixedly mounted with an arc frame 714, the upper ends of the respective convex columns 7066 are inserted into the corresponding arc frames. In the arc frame 714, the two connecting rods 710 are fixedly connected to the multiple turntables 709, and the upper end of the total sampling tube 701 is provided with two arc openings. One end of the two connecting rods 710 is inserted through the corresponding arc openings and fixedly connected to the rotating ring 711, driving the rotating ring 711 to rotate, and through the transmission of the connecting rods 710, the multiple turntables 709 are driven to rotate synchronously. The distance from one end of the arc frame 714 to the other end and the axis of the turntable 709 is gradually reduced. Rotating the turntable 709 can drive the convex column 7066 to translate, driving the telescopic sampling assembly 706 to telescope on the total sampling tube 701, and the multiple arc frames 714 act on The corresponding convex column 7066 is used to push one end of the telescopic sampling component 706 out of the total sampling tube 701, and then the second motor 703 is started to drive the driving shaft 702 to rotate. The driving shaft 702 can synchronously drive multiple sleeves 7062 to rotate, and the auger blade 7063 rotates accordingly to collect biomass fuel. Since multiple telescopic sampling components 706 are installed at different heights on the total sampling tube 701, biomass fuels at different depths can be collected synchronously, avoiding the inaccurate results of manual collection, meeting the fair and just sampling requirements in the detection, and at the same time, the operation is simple, the time consumption is short, and the sampling efficiency is greatly improved.

[0021] Embodiment 2 is different from the above embodiment in that a plurality of third bevel gears 704 are fixedly installed on the driving shaft 702 at equal intervals, a plurality of mounting plates 705 are fixedly installed on the inner wall of the total sampling tube 701, a rotating shaft 707 is rotatably installed on the mounting plate 705, a fourth bevel gear 708 is fixedly installed on one end of the rotating shaft 707, each of the fourth bevel gears 708 is meshed with the corresponding third bevel gear 704, and the other end of each of the rotating shafts 707 is inserted into the corresponding sleeve 7062 and slidably connected thereto, and the second motor is started. 703, drives the driving shaft 702 to rotate, and drives the rotating shaft 707 to rotate through the transmission of the third bevel gear 704 and the fourth bevel gear 708. The rotating shaft 707 acts on the sleeve 7062, drives the sleeve 7062 and the auger blade 7063 to rotate, and samples the biomass fuel, ensuring that the driving of the auger blade 7063 is not affected by the movement of the telescopic sampling component 706, and can drive multiple telescopic sampling components 706 to sample synchronously, so as to avoid the sampling time difference between different sampling points during manual sampling causing inaccurate detection results.

[0022] Embodiment 3 is different from the above embodiment in that one end of the secondary sampling tube 7061 is provided with a sample outlet 7065, a plurality of sample collection boxes 712 are fixedly installed on the inner wall of the main sampling tube 701, and each of the sample collection boxes 712 is fixedly installed below the corresponding sample outlet 7065, a plurality of sampling ports are provided on the side wall of the main sampling tube 701, and the positions of the plurality of sampling ports correspond to the positions of the plurality of sample collection boxes 712, a sampling port cover 713 is snap-fitted into the sampling port, and one end of the sleeve 7062 is inserted through the secondary sampling tube 7061. One end of the barrel 7061 and one end of the sleeve 7062 are fixedly installed with a breaking cone 7064, which is conducive to breaking a channel in the biomass fuel and facilitating the insertion of the telescopic sampling assembly 706 into the biomass fuel. The auger blade 7063 collects the biomass fuel and transports it to the sample outlet 7065. The sample falls from the sample outlet 7065 into the sample collection box 712 for collection. The sampling port cover 713 is subsequently opened to take out the sample, and the collected sample can be obtained, thereby avoiding the mixing of samples from different sampling points and causing inaccurate detection results.

[0023] Embodiment 4 is different from the above embodiments in that Figure 6-Figure 8, further comprising a shell 1, a cylinder 2 and a lifting frame 3, wherein the lifting frame 3 is slidably mounted inside the shell 1, the cylinder 2 is fixedly mounted on the upper end of the shell 1, the telescopic end of the cylinder 2 is inserted through the upper end of the shell 1 and fixedly connected to the lifting frame 3, and two sampling mechanisms 7 are provided, both of which are mounted on the lifting frame 3, and the sampling mechanisms 7 can be driven by the cylinder 2 to be lifted and lowered, so that it is convenient to insert the sampling mechanism 7 into the biomass fuel for sampling during use, and to put the sampling mechanism 7 into the shell 1 after use to avoid contact. To facilitate the carrying and use of the present invention, a handle can be provided on the shell 1, and the shell 1 can be placed on the biomass fuel by holding the handle during use, and the shell 1 can be fixed by the handle to facilitate subsequent operations.

[0024] Embodiment 5 is different from the above embodiments in that two transverse frames 4 are slidably installed in the lifting frame 3, the two sampling mechanisms 7 are fixedly installed on the two transverse frames 4, and the two transverse frames 4 are fixedly installed with lead screw sliders 401 inside. A bidirectional lead screw 5 is rotatably installed in the lifting frame 3, and both ends of the bidirectional lead screw 5 are provided with threads, and the thread sizes at both ends of the bidirectional lead screw 5 are the same and the directions are opposite. The bidirectional lead screw 5 is inserted through the two lead screw sliders 401 and is threadedly matched with the two lead screw sliders 401. The two lead screw sliders 401 are respectively matched with the threads at both ends of the bidirectional lead screw 5, and the middle part of the bidirectional lead screw 5 is fixedly installed with a first bevel gear Wheel 501, a first motor 6 is fixedly installed on the upper end of the lifting frame 3, the output end of the first motor 6 passes through the upper end of the lifting frame 3, and a second bevel gear 601 is fixedly installed on the output end of the first motor 6, the second bevel gear 601 is meshed with the first bevel gear 501, by starting the first motor 6, through the transmission of the first bevel gear 501 and the second bevel gear 601, the bidirectional screw rod 5 is driven to rotate, thereby driving the two transverse frames 4 to move in different directions along the lifting frame 3, adjusting the distance between the two sampling mechanisms 7 as needed, and collecting biomass fuels at two different positions at the same time, so as to facilitate the comparison of sample data between two sampling points with the same depth but different lateral distances.

[0025] The lower end of the total sampling tube 701 is configured in a conical shape. When the total sampling tube 701 is inserted into the biomass fuel, the width of the inner cavity of the shell 1 is greater than the diameter of the total sampling tube 701, and the height of the inner cavity of the shell 1 is greater than the length of the total sampling tube 701, so that the total sampling tube 701 can be completely placed in the shell. When not in use, placing the total sampling tube 701 in the shell 1 can avoid accidental injury to the contactor.

[0026] Working principle: Start the first motor 6, and drive the bidirectional screw rod 5 to rotate through the transmission of the first bevel gear 501 and the second bevel gear 601, so as to drive the two transverse frames 4 to move in different directions along the lifting frame 3, and adjust the distance between the two sampling mechanisms 7 as needed; Place the housing 1 above the biomass fuel, start the cylinder 2, and the cylinder 2 pushes the lifting frame 3 to move downward along the housing 1, driving the two sampling mechanisms 7 to move out of the inner cavity of the housing 1, and insert the two total sampling tubes 701 into the biomass fuel until the two total sampling tubes 701 are completely immersed in the biomass fuel; The rotating ring 711 is driven to rotate, and the multiple rotating disks 709 are driven to rotate synchronously through the transmission of the connecting rod 710. The multiple arc frames 714 act on the corresponding convex columns 7066 to push one end of the telescopic sampling assembly 706 out of the main sampling tube 701, and one end of the telescopic sampling assembly 706 is inserted into the biomass fuel; The second motor 703 is started, and the second motor 703 drives the driving shaft 702 to rotate, and drives the rotating shaft 707 to rotate through the transmission of the third bevel gear 704 and the fourth bevel gear 708. The rotating shaft 707 acts on the sleeve 7062, and drives the sleeve 7062 and the auger blade 7063 to rotate. The auger blade 7063 transports the biomass fuel from one end of the auxiliary sampling tube 7061 to the other end, and samples the biomass fuel. The collected biomass fuel falls into the sample collection box 712 through the sample outlet 7065; After the sampling is completed, the rotating ring 711 is rotated in the opposite direction to drive the sampling mechanism 7 to be completely retracted to the total sampling tube 701, and the cylinder 2 is started again to drive the sampling mechanism 7 to be retracted into the outer shell 1. When the collected biomass samples need to be taken out later, the sampling port cover 713 is opened to take out the samples in different sample boxes 712 respectively.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic fuel sampling device, comprising a sampling mechanism, characterized in that: The sampling mechanism includes a main sampling tube, a driving shaft, a second motor, a plurality of telescopic sampling components, a plurality of turntables, two connecting rods and a rotating ring. The plurality of telescopic sampling components are symmetrically and equidistantly installed on both sides of the main sampling tube. The telescopic sampling component includes an auxiliary sampling tube, a sleeve and an auger blade. The auxiliary sampling tube is slidably connected to the main sampling tube. The sleeve is rotatably installed in the auxiliary sampling tube. The auger blade is fixedly installed on the sleeve. The driving shaft is rotatably installed inside the main sampling tube. The second motor is fixedly installed on the upper end of the main sampling tube. The output end of the motor passes through the upper end of the total sampling tube and is fixedly connected to the driving shaft. The driving shaft can synchronously drive multiple sleeves to rotate. A convex column is fixedly installed on one end of the auxiliary sampling tube. Multiple turntables are equidistantly rotatably installed on the inner wall of the total sampling tube. The lower ends of the multiple turntables are fixedly installed with arc frames. The upper ends of each of the convex columns are inserted into the corresponding arc frames. The two connecting rods are fixedly connected to the multiple turntables. The upper end of the total sampling tube is provided with two arc openings. One end of the two connecting rods passes through the corresponding arc openings and is fixedly connected to the rotating ring.

2. A fully automatic fuel sampling device according to claim 1, characterized in that: A plurality of third bevel gears are fixedly installed on the driving shaft at equal intervals, a plurality of mounting plates are fixedly installed on the inner wall of the total sampling tube, a rotating shaft is rotatably installed on the mounting plate, a fourth bevel gear is fixedly installed on one end of the rotating shaft, each of the fourth bevel gears is meshed with the corresponding third bevel gear, and the other end of each of the rotating shafts is inserted into the corresponding sleeve and is slidably connected thereto.

3. A fully automatic fuel sampling device according to claim 1, characterized in that: A sample outlet is provided at one end of the auxiliary sampling tube, and a plurality of sample collecting boxes are fixedly installed on the inner wall of the main sampling tube, each of which is fixedly installed below the corresponding sample outlet. A plurality of sampling ports are provided on the side wall of the main sampling tube, and the positions of the plurality of sampling ports respectively correspond to the positions of the plurality of sample collecting boxes, and a sampling port cover is snap-fitted into the sampling port.

4. A fully automatic fuel sampling device according to claim 1, characterized in that: One end of the sleeve is inserted through one end of the auxiliary sampling tube, and a soil breaking cone is fixedly installed on one end of the sleeve.

5. The fully automatic fuel sampling device according to claim 1, characterized in that: The distance between one end of the arc frame and the axis of the turntable gradually decreases from the other end.

6. A fully automatic fuel sampling device according to claim 1, characterized in that: It also includes an outer shell, a cylinder and a lifting frame. The lifting frame is slidably installed inside the outer shell, and the cylinder is fixedly installed on the upper end of the outer shell. The telescopic end of the cylinder passes through the upper end of the outer shell and is fixedly connected to the lifting frame. Two sampling mechanisms are provided, and both of the two sampling mechanisms are installed on the lifting frame.

7. A fully automatic fuel sampling device according to claim 6, characterized in that: Two transverse frames are slidably installed in the lifting frame, and the two sampling mechanisms are respectively fixedly installed on the two transverse frames, and lead screw sliders are fixedly installed inside the two transverse frames. A bidirectional lead screw is rotatably installed in the lifting frame, and the bidirectional lead screw passes through the two lead screw sliders and is threadedly matched with the two lead screw sliders. A first bevel gear is fixedly installed in the middle of the bidirectional lead screw, and a first motor is fixedly installed on the upper end of the lifting frame, and the output end of the first motor passes through the upper end of the lifting frame, and a second bevel gear is fixedly installed on the output end of the first motor, and the second bevel gear is meshed with the first bevel gear.

8. A fully automatic fuel sampling device according to claim 7, characterized in that: Both ends of the bidirectional screw rod are provided with threads, and the threads at both ends of the bidirectional screw rod have the same size and opposite directions, and the two screw sliders are respectively matched with the threads at both ends of the bidirectional screw rod.

9. The fully automatic fuel sampling device according to claim 1, characterized in that: The lower end of the total sampling tube is arranged in a cone shape, the width of the inner cavity of the shell is greater than the diameter of the total sampling tube, and the height of the inner cavity of the shell is greater than the length of the total sampling tube.

10. A method for sampling biomass fuel using a fuel automatic sampling device as claimed in any one of claims 1 to 9, characterized in that: The steps include: Start the first motor, and drive the bidirectional screw to rotate through the transmission of the first bevel gear and the second bevel gear, so as to drive the two transverse frames to move in different directions along the lifting frame, and adjust the distance between the two sampling mechanisms as needed; Place the shell above the biomass fuel, start the cylinder, push the lifting frame to move downward along the shell, drive the two sampling mechanisms to move out of the inner cavity of the shell, and insert the two total sampling tubes into the biomass fuel until the two total sampling tubes are completely immersed in the biomass fuel; The rotating ring is driven to rotate, and the multiple turntables are driven to rotate synchronously through the transmission of the connecting rod. The multiple arc frames act on the corresponding convex columns to push one end of the telescopic sampling assembly to extend out of the total sampling tube, and one end of the telescopic sampling assembly is inserted into the biomass fuel; The second motor is started, and the second motor drives the driving shaft to rotate, and drives the rotating shaft to rotate through the transmission of the third bevel gear and the fourth bevel gear. The rotating shaft acts on the casing, drives the casing and the auger blades to rotate, and samples the biomass fuel; After the sampling is completed, the rotating ring is rotated in the opposite direction to drive the sampling mechanism to be completely retracted into the total sampling tube, and the cylinder is started again to drive the sampling mechanism to be retracted into the outer shell, and the collected biomass sample can be taken out subsequently.

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