Sampling device for atmospheric environment prediction and evaluation and use method thereof

Abstract

The invention discloses a sampling device for atmospheric environment prediction and evaluation and a use method thereof, relates to the field of devices for atmospheric environment sampling, and can solve the problems in the background art that most existing atmospheric sampling devices are used on the ground, atmospheric sample sampling is limited, collected and detected data are single, and the atmosphere at a higher position cannot be sampled. The problems that an existing unmanned aerial vehicle air sampling device is influenced by power supply of the sampling device and heavy in weight, only samples can be collected once, and multi-time multi-point sampling can be carried out by reciprocating flight back and forth are solved. The method comprises the following steps: S1, fixedly communicating an air extracting pump with an air extracting opening, and then extracting air; s2, the gas cylinders are inserted into the fixing rings correspondingly and fixed through jackscrews; s3, a driving motor is powered on to drive the gas cylinder to slide through a conveying belt and a fixing ring; and S4, driving the inclined plane sliding block to move downwards through the limiting of the inclined plane limiting block, and enabling the pricking needle to move upwards for sampling.

Description

Technical Field

[0001] The invention belongs to the field of atmospheric environment sampling devices, in particular to a sampling device for atmospheric environment prediction and evaluation and a use method thereof. Background Art

[0002] Atmospheric environment quality testing is the process of observing and analyzing pollutants in the atmospheric environment, their changes and their impact on the environment. The molecular pollutants tested mainly include sulfur oxides, nitrogen oxides, carbon monoxide, ozone, halogenated hydrocarbons, hydrocarbons, etc.; the particulate pollutants mainly include dust, total suspended particulates, floating dust and acid deposition.

[0003] Most of the existing atmospheric sampling devices are used on the ground. There are limitations in sampling atmospheric samples. The collected detection data is single and it is impossible to sample the atmosphere at higher altitudes. The existing atmospheric sampling devices of drones are heavy due to the power supply of the sampling devices. They can only collect samples once at a time and need to fly back and forth to perform multiple multi-point sampling. Therefore, we propose a sampling device for atmospheric environment prediction and assessment to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a sampling device for atmospheric environment prediction and evaluation and a method of using the same.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sampling device for atmospheric environment prediction and assessment includes: an unmanned aerial vehicle (UAV). The sampling device for atmospheric environment prediction and assessment also includes: a base plate assembly, a cover assembly and a sampling device. The upper end of the base plate assembly is detachably fixed with a cover assembly, a plurality of the sampling devices are fixed on the base plate assembly, and the UAV is fixedly connected to the cover assembly.

[0007] The base plate assembly includes: a base plate, a waist-shaped chute, conveyor belt rollers and a conveyor belt. A waist-shaped chute is provided at the upper end of the base plate. Two conveyor belt rollers are symmetrically rotatably connected to the upper end of the base plate. One of the conveyor belt rollers is provided with a driving motor. Conveyor belts are provided on the two conveyor belt rollers. The two conveyor belt rollers are arranged in the middle of the inner side of the waist-shaped chute.

[0008] The cover assembly includes: a cover, an air hole, a sloped limit block and a fixing seat. The cover is detachably fixed to the upper end of the base plate. The cover is provided with a plurality of the air holes. A sloped limit block is fixed to the inner top surface of the cover. A fixing seat is fixed to the upper end of the cover. The bottom surface of the drone is fixedly connected to the fixing seat.

[0009] The multiple sampling devices all include: a gas cylinder, a fixed ring, a rubber plug, an inclined slider, a spring telescopic rod, a rack 1, a sampling box unit and an exhaust unit. The gas cylinder is inserted into the fixed ring and fastened by a top screw. The fixed ring is fixedly connected to the conveyor belt. A rubber plug is provided on the top surface of the gas cylinder. The inclined slider seals and slides through the top surface of the gas cylinder. A spring telescopic rod is fixed to the bottom surface of the gas cylinder. The movable end of the spring telescopic rod is fixedly connected to the inclined slider. A rack 1 is fixed on the movable rod of the spring telescopic rod. The rack 1 slides into the sampling box unit. The outer side of the gas cylinder is fixedly connected to the exhaust unit. The gas cylinder slides in the waist-shaped slide groove, and the inclined limit block is located above the inclined slider.

[0010] The sampling box unit includes: a sampling box, a limit rod, a spring 1, a slide plate, a rack 2, a gear, a fixed plate, a needle and an exhaust hole. The sampling box is fixed inside the gas cylinder, a limit rod is fixed on the inner bottom surface of the sampling box, a spring 1 is mounted on the limit rod, the slide plate is slidably connected to the limit rod, the slide plate slides against the inner wall of the sampling box, a rack 2 is fixed on the upper end of the slide plate, a gear is rotatably connected to the top surface of the sampling box, the gear is meshed with the rack 2, the rack 2 slides through the top surface of the sampling box and is fixed with a fixed plate, a needle is fixed on the fixed plate, an exhaust hole is arranged on the side wall of the needle, the needle is located below the rubber stopper, the rack 1 slides through the fixed plate and the top surface of the sampling box and meshes with the gear.

[0011] The air extraction unit includes: an air extraction pipe, an air duct, a sealing plug, a guide column, a second spring, a guide column bracket and an air extraction port. One end of the air extraction pipe is fixedly connected to the side wall of the gas cylinder, the other end of the air extraction pipe is provided with an air extraction port, an air duct is provided inside the air extraction pipe, the front end of the sealing plug is sealingly pressed against the air duct opening, a guide column is fixed to the other end of the sealing plug, a second spring is mounted on the guide column, a guide column bracket is fixed inside the air extraction pipe, the guide column is slidably connected to the guide column bracket, and the second spring is provided between the sealing plug and the guide column bracket.

[0012] A method for using a sampling device for atmospheric environment prediction and assessment, the method comprising the following steps:

[0013] S1: The vacuum pump is fixedly connected to the vacuum port and then vacuum is performed;

[0014] S2: Insert the gas cylinders into the fixing rings and fix them with the top screws;

[0015] S3: Power on the driving motor to drive the gas cylinder to slide through the conveyor belt and the fixed ring;

[0016] S4: The inclined plane limit block drives the inclined plane slider to move downward, so that the needle moves upward to take samples.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a sampling device for atmospheric environment prediction and evaluation, which can solve the problems raised in the background technology: the existing atmospheric sampling devices are mostly used on the ground, the sampling of atmospheric samples is limited, the collected detection data is single, and it is impossible to sample the atmosphere at a higher altitude; and the existing atmospheric sampling devices of unmanned aerial vehicles are heavy due to the power supply of the sampling devices, and can only collect samples once at a time, and need to fly back and forth to perform multiple multi-point sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure;

[0020] Figure 2 It is a schematic diagram of the installation position structure of the bottom plate assembly, the cover assembly and the sampling device;

[0021] Figure 3 It is the top view of the base plate;

[0022] Figure 4 It is the side view of the bottom plate;

[0023] Figure 5 is a schematic diagram of the sampling device structure;

[0024] Figure 6 It is a schematic diagram of the sampling box unit structure;

[0025] Figure 7 is a schematic diagram of the structure of the air extraction unit;

[0026] Figure 8 This is a top view of the sampling device installation location. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than 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 work are within the scope of protection of the present invention.

[0028] A sampling device for atmospheric environment prediction and assessment, comprising: an unmanned aerial vehicle 4, characterized in that: the sampling device for atmospheric environment prediction and assessment also includes: a base plate assembly 1, a cover assembly 2 and a sampling device 3, the cover assembly 2 is detachably fixed to the upper end of the base plate assembly 1, a plurality of the sampling devices 3 are fixed on the base plate assembly 1, and the unmanned aerial vehicle 4 is fixedly connected to the cover assembly 2.

[0029] The base plate assembly 1 includes: a base plate 1-1, a waist-shaped slide groove 1-2, a conveyor belt roller 1-3 and a conveyor belt 1-4. A waist-shaped slide groove 1-2 is arranged on the upper end of the base plate 1-1. Two conveyor belt rollers 1-3 are symmetrically rotatably connected to the upper end of the base plate 1-1. One of the conveyor belt rollers 1-3 is provided with a driving motor. Conveyor belts 1-4 are arranged on the two conveyor belt rollers 1-3. The two conveyor belt rollers 1-3 are arranged in the middle of the inner side of the waist-shaped slide groove 1-2.

[0030] The cover assembly 2 includes: a cover 2-1, an air hole 2-2, a sloped limit block 2-3 and a fixing seat 2-4. The cover 2-1 is detachably fixed to the upper end of the base plate 1-1. The cover 2-1 is provided with a plurality of the air holes 2-2. The top surface of the cover 2-1 is fixed with a sloped limit block 2-3. The upper end of the cover 2-1 is fixed with a fixing seat 2-4. The bottom surface of the drone 4 is fixedly connected to the fixing seat 2-4.

[0031] The fixing seat 2-4 is divided into two detachable upper and lower parts, and is detachably fixedly connected by bolts. The lower part of the fixing seat 2-4 is fixedly connected to the top surface of the cover 2-1, and the upper part of the fixing seat 2-4 is fixedly connected to the bottom surface of the drone 4.

[0032] The plurality of sampling devices 3 each include: a gas cylinder 3-1, a fixing ring 3-2, a rubber stopper 3-3, an inclined slider 3-4, a spring telescopic rod 3-5, a rack 3-6, a sampling box unit 3-7 and a suction unit 3-8. The gas cylinder 3-1 is inserted into the fixing ring 3-2 and fastened by a top screw. The fixing ring 3-2 is fixedly connected to the conveyor belt 1-4. A rubber stopper 3-3 is provided on the top surface of the gas cylinder 3-1. The inclined slider 3-4 is sealed and slidably inserted into the top of the gas cylinder 3-1. A spring telescopic rod 3-5 is fixed to the inner bottom surface of the gas cylinder 3-1, and the movable end of the spring telescopic rod 3-5 is fixedly connected to the inclined slider 3-4. A rack 3-6 is fixed on the movable rod of the spring telescopic rod 3-5, and the rack 3-6 slides into the sampling box unit 3-7. The outer side surface of the gas cylinder 3-1 is fixedly connected to the vacuum unit 3-8. The gas cylinder 3-1 slides in the waist-shaped slide groove 1-2, and the inclined limit block 2-3 is located above the inclined slider 3-4.

[0033] The sampling box unit 3-7 includes: a sampling box 3-7-1, a limiting rod 3-7-2, a spring 1 3-7-3, a slide plate 3-7-4, a rack 2 3-7-5, a gear 3-7-6, a fixing plate 3-7-7, a needle 3-7-8 and an exhaust hole 3-7-9. The sampling box 3-7-1 is fixed inside the gas cylinder 3-1, and a limiting rod 3-7-2 is fixed on the inner bottom surface of the sampling box 3-7-1. A spring 1 3-7-3 is mounted on the limiting rod 3-7-2. The slide plate 3-7-4 is slidably connected to the limiting rod 3-7-2. The slide plate 3-7-4 slides against the inner wall of the sampling box 3-7-1. A rack gear 3-7-5 is fixed to the upper end of 3-7-4, and a gear 3-7-6 is rotatably connected to the inner top surface of the sampling box 3-7-1. The gear 3-7-6 is meshed with the rack gear 3-7-5. The rack gear 3-7-5 slides through the top surface of the sampling box 3-7-1 and is fixed with a fixed plate 3-7-7. A needle 3-7-8 is fixed on the fixed plate 3-7-7. An exhaust hole 3-7-9 is provided on the side wall of the needle 3-7-8. The needle 3-7-8 is located below the rubber stopper 3-3. The rack gear 3-6 slides through the fixed plate 3-7-7 and the top surface of the sampling box 3-7-1 and is meshed with the gear 3-7-6.

[0034] The air extraction unit 3-8 includes: an air extraction pipe 3-8-1, an airway 3-8-2, a sealing plug 3-8-3, a guide column 3-8-4, a spring 2 3-8-5, a guide column bracket 3-8-6 and an air extraction port 3-8-7. One end of the air extraction pipe 3-8-1 is fixedly connected to the side wall of the gas cylinder 3-1, and the other end of the air extraction pipe 3-8-1 is provided with an air extraction port 3-8-7. The airway 3-8-2 is provided inside the air extraction pipe 3-8-1. The sealing plug The front end seal of 3-8-3 rests against the opening of the airway 3-8-2, and a guide column 3-8-4 is fixed to the other end of the sealing plug 3-8-3, and a spring 2 3-8-5 is mounted on the guide column 3-8-4. A guide column bracket 3-8-6 is fixed inside the exhaust pipe 3-8-1, and the guide column 3-8-4 is slidably connected to the guide column bracket 3-8-6, and the spring 2 3-8-5 is arranged between the sealing plug 3-8-3 and the guide column bracket 3-8-6.

[0035] The air hole 2-2 is provided to facilitate air to enter the cover 2-1, and the rubber plug 3-3 is fixed in a replaceable manner, such as bonding or interference fit.

[0036] A method for using a sampling device for atmospheric environment prediction and assessment, the method comprising the following steps:

[0037] S1: Connect the vacuum pump to the vacuum port 3-8-7 and then perform vacuuming;

[0038] S2: Insert the gas cylinders 3-1 into the fixing rings 3-2 and fix them by means of screws;

[0039] S3: Power on the driving motor to drive the gas cylinder 3-1 to slide through the conveyor belt 1-4 and the fixed ring 3-2;

[0040] S4: The inclined plane limit block 2-3 drives the inclined plane slide block 3-4 to move downward, so that the needle 3-7-8 moves upward to take samples.

[0041] The working principle of the present invention is:

[0042] When in use, the vacuum pump is fixedly connected to the vacuum port 3-8-7 and then vacuum is performed. Negative pressure is generated inside the vacuum pipe 3-8-1, so that the sealing plug 3-8-3 drives the guide column 3-8-4 to slide to the right, and at the same time, the spring 3-8-5 is compressed. The guide column bracket 3-8-6 supports the sealing plug 3-8-3, and the gas in the gas cylinder 3-1 is pumped out through the airway 3-8-2 and the vacuum port 3-8-7. At this time, the interior of the gas cylinder 3-1 is in a vacuum negative pressure state. The vacuum pump is separated from the vacuum port 3-8-7, and the sealing plug 3-8-3 is reset by the spring 3-8-5 to seal the airway 3-8-2. Repeat the above steps to pump all the gas cylinders 3-1 set in the sampling device 3 into a vacuum negative pressure state, and then Then, multiple gas cylinders 3-1 are respectively inserted into the fixing ring 3-2 and fixed by the top screw, and then the cover 2-1 is fixed to the bottom plate 1-1, and then fixed to the bottom surface of the drone 4 by the fixing seat 2-4. The conveyor belt roller 1-3 is provided with a driving motor, and the driving motor is powered by the battery of the drone 4, so as to reduce the weight of the device. The drone 4 takes off and drives the device to cruise. When it arrives at the location where sampling is required, the driving motor is energized to drive the conveyor belt roller 1-3 to rotate clockwise, and then the gas cylinder 3-1 is driven to slide along the waist-shaped slide groove 1-2 through the conveyor belt 1-4 and the fixing ring 3-2. The waist-shaped slide groove 1-2 limits the gas cylinder 3-1. When the gas cylinder 3-1 moves, the inclined slider 3-4 moves When it moves to the inclined surface limit block 2-3, the inclined surface limit block 2-3 is limited to drive the inclined surface slider 3-4 to move downward, compressing the spring telescopic rod 3-5, thereby making the rack 1 3-6 move downward to drive the gear 3-7-6 to rotate, and the gear 3-7-6 rotates to drive the rack 2 3-7-5 to move upward, and drive the slide plate 3-7-4 to slide upward along the limit rod 3-7-2, and at the same time compress the spring 1 3-7-3. The spring 1 3-7-3 plays the role of resetting the slide plate 3-7-4 and the rack 2 3-7-5. The rack 2 3-7-5 moves upward, driving the puncture needle 3-7-8 to move upward, pierce and pass through the rubber plug 3-3. Since the interior of the gas cylinder 3-1 is in a vacuum negative pressure state, the puncture needle 3-7-8 passes through the rubber plug 3- 3, air is forced into the needle 3-7-8 by air pressure, and into the gas cylinder 3-1 through the exhaust hole 3-7-9. When the inclined slider 3-4 moves and separates from the inclined limit block 2-3, the inclined slider 3-4 and the needle 3-7-8 are reset by the action of the spring telescopic rod 3-5 and the spring 1 3-7-3. At the same time, the hole pierced by the needle 3-7-8 is reset and sealed by the elasticity of the rubber plug 3-3. At this time, the sampling of one gas cylinder 3-1 is completed. In the above manner, no additional electric drive is required during sampling, thereby reducing the take-off weight of the drone 4. When the drone 4 cruises to the next sampling location, the drive motor is turned on and the above steps are repeated to allow the next gas cylinder 3-1 to be sampled.After all sampling is completed, the cover 2-1 is removed, and then the top screw is loosened to remove the gas cylinder 3-1, and the gas extraction device is fixedly connected to the gas extraction port 3-8-7, so that the gas sample in the gas cylinder 3-1 can be extracted, and the gas cylinder 3-1 can continue to be in a vacuum negative pressure state during the extraction, so that the next sampling can be used. ;

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sampling device for atmospheric environment prediction and assessment, comprising: The unmanned aerial vehicle (4) is characterized in that the sampling device for atmospheric environment prediction and assessment further comprises: a base plate assembly (1), a cover assembly (2) and a sampling device (3); the cover assembly (2) is detachably fixed to the upper end of the base plate assembly (1); a plurality of the sampling devices (3) are fixed to the base plate assembly (1); and the unmanned aerial vehicle (4) is fixedly connected to the cover assembly (2).

2. The sampling device for atmospheric environment prediction and assessment according to claim 1, characterized in that: The base plate assembly (1) comprises: a base plate (1-1), a waist-shaped chute (1-2), a conveyor belt roller (1-3) and a conveyor belt (1-4); the upper end of the base plate (1-1) is provided with a waist-shaped chute (1-2); the upper end of the base plate (1-1) is symmetrically rotatably connected with two conveyor belt rollers (1-3); one of the conveyor belt rollers (1-3) is provided with a driving motor; the two conveyor belt rollers (1-3) are provided with conveyor belts (1-4); and the two conveyor belt rollers (1-3) are provided in the middle of the inner side of the waist-shaped chute (1-2).

3. The sampling device for atmospheric environment prediction and assessment according to claim 2, characterized in that: The cover assembly (2) comprises: a cover (2-1), an air hole (2-2), an inclined surface stopper (2-3) and a fixing seat (2-4); the cover (2-1) is detachably fixed to the upper end of the bottom plate (1-1); a plurality of air holes (2-2) are arranged on the cover (2-1); an inclined surface stopper (2-3) is fixed to the inner top surface of the cover (2-1); a fixing seat (2-4) is fixed to the upper end of the cover (2-1); and the bottom surface of the drone (4) is fixedly connected to the fixing seat (2-4).

4. The sampling device for atmospheric environment prediction and assessment according to claim 3, characterized in that: The plurality of sampling devices (3) each comprise: a gas cylinder (3-1), a fixing ring (3-2), a rubber stopper (3-3), an inclined sliding block (3-4), a spring telescopic rod (3-5), a rack (3-6), a sampling box unit (3-7) and a gas extraction unit (3-8); the gas cylinder (3-1) is inserted into the fixing ring (3-2) and is fastened by a top screw; the fixing ring (3-2) is fixedly connected to the conveyor belt (1-4); a rubber stopper (3-3) is provided on the top surface of the gas cylinder (3-1); the inclined sliding block (3-4) is sealed and slidably inserted into the gas cylinder (3-1); 1) top surface, a spring telescopic rod (3-5) is fixed on the inner bottom surface of the gas cylinder (3-1), the movable end of the spring telescopic rod (3-5) is fixedly connected to the inclined sliding block (3-4), a rack (3-6) is fixed on the movable rod of the spring telescopic rod (3-5), the rack (3-6) slides into the sampling box unit (3-7), the outer side surface of the gas cylinder (3-1) is fixedly connected to the exhaust unit (3-8), the gas cylinder (3-1) slides in the waist-shaped sliding groove (1-2), and the inclined limit block (2-3) is located above the inclined sliding block (3-4).

5. The sampling device for atmospheric environment prediction and assessment according to claim 4, characterized in that: The sampling box unit (3-7) comprises: a sampling box (3-7-1), a limiting rod (3-7-2), a spring 1 (3-7-3), a slide plate (3-7-4), a rack 2 (3-7-5), a gear (3-7-6), a fixing plate (3-7-7), a puncture needle (3-7-8) and an exhaust hole (3-7-9); the sampling box (3-7-1) is fixed inside the gas cylinder (3-1); a limiting rod (3-7-2) is fixed on the inner bottom surface of the sampling box (3-7-1); a spring 1 (3-7-3) is mounted on the limiting rod (3-7-2); the slide plate (3-7-4) is slidably connected to the limiting rod (3-7-2); the slide plate (3-7-4) slides against the inner wall of the sampling box (3-7-1); A second rack (3-7-5) is fixed to the upper end of the plate (3-7-4); a gear (3-7-6) is rotatably connected to the inner top surface of the sampling box (3-7-1); the gear (3-7-6) is meshed with the second rack (3-7-5); the second rack (3-7-5) slides through the top surface of the sampling box (3-7-1) and is fixed with a fixed plate (3-7-7); a thorn needle (3-7-8) is fixed on the fixed plate (3-7-7); an exhaust hole (3-7-9) is provided on the side wall of the thorn needle (3-7-8); the thorn needle (3-7-8) is located below the rubber stopper (3-3); the first rack (3-6) slides through the fixed plate (3-7-7) and the top surface of the sampling box (3-7-1) and is meshed with the gear (3-7-6).

6. The sampling device for atmospheric environment prediction and assessment according to claim 4, characterized in that: The air extraction unit (3-8) comprises: an air extraction pipe (3-8-1), an air passage (3-8-2), a sealing plug (3-8-3), a guide column (3-8-4), a second spring (3-8-5), a guide column bracket (3-8-6) and an air extraction port (3-8-7); one end of the air extraction pipe (3-8-1) is fixedly connected to the side wall of the gas cylinder (3-1); the other end of the air extraction pipe (3-8-1) is provided with an air extraction port (3-8-7); the air passage (3-8-2) is provided inside the air extraction pipe (3-8-1); the sealing plug (3-8-3) is provided with a guide column bracket (3-8-4), a second spring (3-8-5), a guide column bracket (3-8-6) and an air extraction port (3-8-7); The front end of the plug (3-8-3) is sealed against the opening of the airway (3-8-2), and a guide column (3-8-4) is fixed to the other end of the sealing plug (3-8-3), and a spring 2 (3-8-5) is mounted on the guide column (3-8-4). A guide column bracket (3-8-6) is fixed inside the exhaust pipe (3-8-1), and the guide column (3-8-4) is slidably connected to the guide column bracket (3-8-6), and the spring 2 (3-8-5) is arranged between the sealing plug (3-8-3) and the guide column bracket (3-8-6).

7. A method for using the sampling device for atmospheric environment prediction and assessment according to claim 6, characterized in that: The method comprises the following steps: S1: Connect the vacuum pump to the vacuum port (3-8-7) and then perform vacuuming; S2: insert the gas cylinders (3-1) into the fixing rings (3-2) and fix them by means of screws; S3: Powering on the driving motor to drive the gas cylinder (3-1) to slide through the conveyor belt (1-4) and the fixing ring (3-2); S4: The inclined plane limit block (2-3) is used to limit the inclined plane slide block (3-4) to move downward, so that the needle (3-7-8) moves upward to take samples.

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