A fully automatic fuel sampling device and a sampling method based on biomass fuel

Abstract

The present invention discloses a fully automatic fuel sampling device, comprising a sampling mechanism, wherein the sampling mechanism comprises a plurality of telescopic sampling assemblies, wherein the plurality of telescopic sampling assemblies are symmetrically and equidistantly mounted on both sides of a main sampling tube, wherein the telescopic sampling assemblies comprise a secondary sampling tube, a sleeve, and an auger blade, wherein the secondary sampling tube is slidably connected to the main sampling tube, the sleeve is rotatably mounted in the secondary sampling tube, the auger blade is fixedly mounted on the sleeve, the drive shaft is rotatably mounted inside the main sampling tube, the drive shaft is capable of synchronously driving the rotation of the plurality of sleeves, one end of the secondary sampling tube is fixedly mounted with a boss, the two connecting rods are both fixedly connected to a plurality of turntables, and one end of the two connecting rods is fixedly connected to a rotating ring. Through the overall structural arrangement, the present invention can synchronously collect biomass fuels at different depths, thereby avoiding the inaccuracy of manual collection results and meeting the fair and impartial sampling requirements in detection.

Description

Technical Field

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

[0002] Biomass fuels in industry currently come from two sources: one is processed biomass fuels into a certain granular fuel; the other is raw fuels that have not been processed into a certain form. 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.

[0003] 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 relatively 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 impartial sampling requirements in the test. 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, and installs telescopic sampling components at different positions on the total sampling tube of the sampling mechanism. A convex column is provided on the telescopic sampling component, and 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 extension and retraction of the telescopic sampling component on the total sampling tube. A drive 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 for sampling of 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, and biomass fuels at different depths can be collected synchronously, avoiding the inaccurate results of manual collection and meeting the fair and impartial sampling requirements in 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, the sampling mechanism comprising a main sampling tube, a drive shaft, a second motor, a plurality of telescopic sampling components, a plurality of turntables, two connecting rods and a rotating ring, a plurality of the telescopic sampling components are symmetrically and equidistantly installed on both sides of the main sampling tube, the telescopic sampling component comprises 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 drive 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, and 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. A boss is fixedly mounted on one end of the auxiliary sampling tube, and multiple turntables are equidistantly mounted on the inner wall of the total sampling tube. An arc frame is fixedly mounted on the lower ends of the multiple turntables, and the upper end of each boss is inserted into the corresponding arc frame. The two connecting rods are fixedly connected to multiple turntables. Two arc openings are provided at the upper end of the total sampling tube, and 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 rotating shaft 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, and a plurality of sample collecting boxes are fixedly installed on the inner wall of the main sampling tube, and 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, 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.

[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 a shell, a cylinder and a lifting frame, the lifting frame is slidably installed inside the shell, the cylinder is fixedly installed on the upper end of the shell, the telescopic end of the cylinder passes through the upper end of the shell and is fixedly connected to the lifting frame, and there are two sampling mechanisms, both of which 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 screw is rotatably installed in the lifting frame, and the bidirectional screw passes through the two screw sliders and is threadedly engaged with the two screw sliders. A first bevel gear is fixedly installed in the middle of the bidirectional screw, and a first motor is fixedly installed on the upper end of the lifting frame, and the output end of the first motor 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 conical, 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 fully automatic fuel sampling device, the method comprising the following steps:

[0015] Start the first motor, which drives the bidirectional screw 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, and adjusting the distance between the two sampling mechanisms as needed;

[0016] Place the housing above the biomass fuel, start the cylinder, push the lifting frame downward along the housing, drive the two sampling mechanisms out of the inner cavity of the housing, and insert the two total sampling tubes into the biomass fuel until the two total sampling tubes are completely immersed in the biomass fuel;

[0017] 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 main sampling tube, and one end of the telescopic sampling assembly is inserted into the biomass fuel;

[0018] The second motor is started, and the second motor drives the drive shaft to rotate, which 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, driving the casing and the auger blades to rotate, thereby sampling the biomass fuel;

[0019] 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.

[0020] In summary, the technical effects and advantages of the present invention are as follows:

[0021] 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-shaped frame is provided at the lower end of the turntable, and the upper end of the convex column is inserted into the corresponding arc-shaped frame. The turntable can be driven by the convex column to drive the telescopic sampling component to complete telescoping 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 the 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 where the manual collection results are inaccurate and meeting the fair and impartial 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.

[0022] 2. In the present invention, a shell, a cylinder and a lifting frame are provided. The lifting frame is slidably installed inside the shell, and the cylinder is fixedly installed at the upper end of the shell. The telescopic end of the cylinder passes 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. When in use, the sampling mechanism is conveniently inserted into the biomass fuel for sampling. After use, the sampling mechanism is conveniently put into the shell to avoid contact.

[0023] 3. In the present invention, two transverse frames are slidably installed in the lifting frame, and the two sampling mechanisms are fixedly installed on the two transverse frames respectively. A lead screw slider is 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 is inserted 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, and adjusting the distance between the two sampling mechanisms as needed to collect biomass fuel at two different positions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0025] Figure 1Schematic diagram of the three-dimensional structure of the sampling mechanism of the present invention;

[0026] Figure 2 This is one of the schematic cross-sectional views of the sampling mechanism of the present invention;

[0027] Figure 3 This is the second schematic cross-sectional structure diagram of the sampling mechanism of the present invention;

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 5 Schematic diagram of the connection structure of the turntable of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the cutaway structure of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0033] 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. Casing; 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

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Reference Figure 1-Figure 5The fuel sampling device shown in the figure includes a sampling mechanism 7, which includes a main sampling tube 701, a drive shaft 702, a second motor 703, multiple telescopic sampling assemblies 706, multiple turntables 709, two connecting rods 710 and a rotating ring 711. The multiple telescopic sampling assemblies 706 are symmetrically and equidistantly installed on both sides of the main sampling tube 701. The telescopic sampling assembly 706 includes an auxiliary sampling tube 7061, a sleeve 7062 and an auger blade 7063. 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 boss 7066, a plurality of the turntables 709 are equidistantly rotatably mounted on the inner wall of the total sampling tube 701, the lower ends of the plurality of the turntables 709 are fixedly mounted with an arc frame 714, the upper end of each of the bosses 7066 is inserted into the corresponding arc frame. In the curved frame 714, the two connecting rods 710 are fixedly connected to the plurality of turntables 709. The upper end of the total sampling tube 701 is provided with two arc-shaped openings. One end of the two connecting rods 710 is inserted through the corresponding arc-shaped openings and fixedly connected to the rotating ring 711, driving the rotating ring 711 to rotate. Through the transmission of the connecting rod 710, the plurality of turntables 709 are driven to rotate synchronously. The distance from one end of the curved frame 714 to the other end and the axis of the turntable 709 gradually decreases. Rotating the turntable 709 can drive the boss 7066 to translate, driving the telescopic sampling assembly 706 to telescope on the total sampling tube 701. The plurality of curved frames 714 act on The corresponding convex column 7066 is moved 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 drive shaft 702 to rotate. The drive shaft 702 can synchronously drive multiple sleeves 7062 to rotate, and the auger blades 7063 rotate 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 inaccuracy of manual collection results, meeting the fair and impartial sampling requirements in the test, and at the same time, the operation is simple, the time consumption is short, and the sampling efficiency is greatly improved.

[0036] Example 2 is different from the above example in that a plurality of third bevel gears 704 are fixedly installed on the drive 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 rotating shaft 707 is inserted into the corresponding sleeve 7062 and slidably connected thereto, starting 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, drives the sleeve 7062 and the auger blade 7063 to rotate, and samples the biomass fuel. It ensures that the drive 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, avoiding the sampling time difference between different sampling points during manual sampling causing inaccurate detection results.

[0037] Example 3 is different from the above embodiment in that one end of the auxiliary sampling tube 7061 is provided with a sample outlet 7065, and a plurality of sample collection boxes 712 are fixedly installed on the inner wall of the main sampling tube 701. 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. 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 installed in the sampling port. One end of the sleeve 7062 is inserted through the auxiliary sampling tube 7061. One end of the barrel 7061 and one end of the sleeve 7062 are fixedly installed with a breaking cone 7064. The breaking cone 7064 is conducive to breaking a channel in the biomass fuel, which is conducive to the insertion of the telescopic sampling component 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. Subsequently, the sampling port cover 713 is opened to take out the sample to obtain the collected sample, thereby avoiding the mixing of samples from different sampling points and causing inaccurate test results.

[0038] Example 4 is different from the above examples in that Figure 6-Figure 8, further comprising a housing 1, a cylinder 2, and a lifting frame 3. The lifting frame 3 is slidably mounted inside the housing 1. The cylinder 2 is fixedly mounted on the upper end of the housing 1. The telescopic end of the cylinder 2 passes through the upper end of the housing 1 and is fixedly connected to the lifting frame 3. Two sampling mechanisms 7 are provided, both of which are mounted on the lifting frame 3. The sampling mechanisms 7 can be driven to rise and fall by the cylinder 2. When in use, the sampling mechanisms 7 can be conveniently inserted into the biomass fuel for sampling. After use, the sampling mechanisms 7 can be conveniently stored in the housing 1 to avoid contact. To facilitate the carrying and use of the present invention, a handle can be provided on the housing 1. When in use, the housing 1 can be placed on the biomass fuel by holding the handle, and the housing 1 can be fixed by the handle to facilitate subsequent operations.

[0039] Example 5 is different from the above-mentioned example in that two transverse frames 4 are slidably installed in the lifting frame 3, and the two sampling mechanisms 7 are fixedly installed on the two transverse frames 4 respectively. The interiors of the two transverse frames 4 are fixedly installed with screw sliders 401. A bidirectional screw rod 5 is rotatably installed in the lifting frame 3. Both ends of the bidirectional screw rod 5 are provided with threads, and the thread sizes at both ends of the bidirectional screw rod 5 are the same and the directions are opposite. The bidirectional screw rod 5 passes through the two screw sliders 401 and is threadedly matched with the two screw sliders 401. The two screw sliders 401 are respectively matched with the threads at both ends of the bidirectional screw rod 5. The middle part of the bidirectional screw rod 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 engaged with the first bevel gear 501, and by starting the first motor 6, the bidirectional screw rod 5 is driven to rotate through the transmission of the first bevel gear 501 and the second bevel gear 601, 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 fuel at two different positions at the same time, facilitating the comparison of sample data between two sampling points with the same depth but different lateral distances.

[0040] 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, the total sampling tube 701 is placed in the shell 1 to avoid accidental injury to the contact person.

[0041] Working principle:

[0042] Start the first motor 6, which drives the bidirectional screw 5 to rotate through the transmission of the first bevel gear 501 and the second bevel gear 601, thereby driving the two transverse frames 4 to move in different directions along the lifting frame 3, and adjusting the distance between the two sampling mechanisms 7 as needed;

[0043] Place the housing 1 above the biomass fuel and start the cylinder 2. The cylinder 2 pushes the lifting frame 3 downward along the housing 1, driving the two sampling mechanisms 7 to move out of the inner cavity of the housing 1. The two total sampling tubes 701 are inserted into the biomass fuel until the two total sampling tubes 701 are completely immersed in the biomass fuel.

[0044] The rotating ring 711 is driven to rotate, and the multiple turntables 709 are driven to rotate synchronously through the transmission of the connecting rod 710. The multiple arc-shaped frames 714 act on the corresponding protrusions 7066, pushing 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;

[0045] The second motor 703 is started, and the second motor 703 drives the drive shaft 702 to rotate. The third bevel gear 704 and the fourth bevel gear 708 drive the rotating shaft 707 to rotate. The rotating shaft 707 acts on the sleeve 7062, driving 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, sampling the biomass fuel. The collected biomass fuel falls into the sample collection box 712 through the sample outlet 7065;

[0046] 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 into 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 and the samples in the different sample collection boxes 712 can be taken out separately.

[0047] 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, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 scope of protection 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, and the second The output end of the motor passes through the upper end of the main sampling tube and is fixedly connected to the driving shaft. The driving shaft can synchronously drive the multiple sleeves to rotate. One end of the auxiliary sampling tube is fixedly installed with a boss. The multiple turntables are equidistantly rotatably installed on the inner wall of the main sampling tube. The lower ends of the multiple turntables are fixedly installed with an arc frame. The upper end of each boss is inserted into the corresponding arc frame. The two connecting rods are fixedly connected to the multiple turntables. The upper end of the main 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. 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, and 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, 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.

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 rotating shaft is inserted into the corresponding sleeve and is slidably connected thereto.

3. The 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.

4. 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.

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

6. The fully automatic fuel sampling device according to claim 5, 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. A lead screw slider is 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 engaged 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 is fixedly installed on the output end of the first motor, and the second bevel gear is meshed with the first bevel gear.

7. The fully automatic fuel sampling device according to claim 6, 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.

8. The fully automatic fuel sampling device according to claim 5, characterized in that: The lower end of the total sampling tube is arranged in a conical 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.

9. A method for sampling biomass fuel using a fully automatic fuel sampling device according to any one of claims 1 to 8, characterized in that: The steps include: Start the first motor, which drives the bidirectional screw 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, and adjusting the distance between the two sampling mechanisms as needed; Place the housing above the biomass fuel, start the cylinder, push the lifting frame downward along the housing, drive the two sampling mechanisms out of the inner cavity of the housing, 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 main 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 drive shaft to rotate, which 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, driving the casing and the auger blades to rotate, thereby sampling 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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