Sampling device for metering detection

Abstract

The invention provides a sampling device for metering detection, and relates to the technical field of sampling devices.The sampling device comprises an annular sliding rail, a guiding assembly is arranged at the circle center of the interior of the annular sliding rail and comprises a center column, a rotating cylinder is rotationally installed at the bottom of the center column, and multiple sets of collecting assemblies are installed on the surface of the rotating cylinder in a clamped mode; the collection assembly comprises collection barrels, one end of each collection barrel is provided with a suction port, and the other end of each collection barrel is slidably provided with a piston rod in a penetrating mode. Compared with the prior art, under guiding and driving of a circular sliding rail and a central column, the collection barrels are annularly arranged, and water at different depths is sequentially collected; the collection barrels after collection are conveyed to the hanging assembly through guiding of the center column and stored on the hanging assembly, new collection barrels can be supplemented in time, multiple groups of water can be collected, storage is convenient, and collected samples cannot be frequently arranged.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices, and particularly to a sampling device for metrological detection. Background Art

[0002] Sampling devices are divided into solid sampling and liquid sampling. For liquid sampling devices, common ones such as sampling devices for water quality detection are further divided into manual sampling and machine sampling. The advantage of manual sampling is convenient storage and high flexibility, while the disadvantages are that it is not convenient to sample water quality at different depths. And machine sampling can take water quality at different depths, but the later storage is inconvenient, and due to the influence of the large size of machine equipment, the amount of water quality samples that can be accommodated is small.

[0003] In order to ensure the accuracy of water quality detection results, a sufficient amount of samples should be guaranteed each time of sampling, and then the samples are metrologically extracted according to the objects of water quality detection and subjected to different detections. In this process, when conventional sampling equipment conducts multi-group water quality sample collection, relying on the limited storage quantity of the equipment, it is not convenient to collect water quality at multi-group different depths and different positions, and it is necessary to manually collect and sort the collected samples in time, thus there is inconvenience. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a sampling device for metrological detection to solve the problems raised in the above background art. The structure of the present invention is novel. Under the guidance and drive of a circular slide rail and a central column, the collection buckets are arranged in a ring, and water quality at different depths is collected in sequence. The collected collection buckets are guided by the central column and transported to a suspension assembly, where they are stored. New collection buckets can be replenished in time to conduct multi-group water quality collection, and the storage is convenient, and the samples that have been collected do not need to be sorted frequently.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions: A sampling device for metrological detection, including a circular ring slide rail, a guiding component is provided at the center of the circle inside the circular ring slide rail, the guiding component includes a central column, a rotating cylinder is rotatably installed at the bottom of the central column, a plurality of collecting components are snap-fitted and installed on the surface of the rotating cylinder, the collecting component includes a collecting barrel, one end of the collecting barrel is provided with a suction port, and a piston rod slides out of the other end of the collecting barrel, both sides of the collecting barrel are rotatably installed with side frames through bearings, and sliders are fixed on the outer surfaces of the side frames, the sliders slide along the inside of the circular ring slide rail and the surface of the rotating cylinder respectively, a hanging component is provided on the back of the circular ring slide rail, the hanging component includes a cross plate, a mounting frame is fixed on the top of the cross plate, and a sprocket chain device is installed at the upper end of the mounting frame, two insertion posts are equidistantly arranged on the surface of the chain of the sprocket chain device, and the insertion posts are inserted horizontally into the sliders of the collecting barrel, the top of the central column is fixed with a top plate, and one side of the top plate is fixedly connected to the mounting frame, an adding port is opened on one side of the circular ring slide rail, and a downward notch is opened on the other side of the circular ring slide rail corresponding to the adding port.

[0006] Further, the guiding component further includes an electric insertion post, the electric insertion post is slidably installed inside the central column, and the electric insertion post slides out from the bottom of the rotating cylinder, a bottom plate is fixed at the bottom of the electric insertion post, and the bottom plate is in pressing contact with the bottom of the slider on one side of the collecting barrel.

[0007] Further, a clamping block is provided on the top of the bottom plate, and the clamping block is in pressing contact with the top of the slider of the collecting barrel, a third electric push rod is fixed between the clamping block and the bottom plate, and the positions of the bottom plate and the clamping block are on the same straight line as the downward notch of the circular ring slide rail.

[0008] Further, second electric push rods are equidistantly fixed on the outer surface of the rotating cylinder, insertion holes are opened on the inner side surface of the slider corresponding to the extended ends of the second electric push rods, and the second electric push rods are slidably inserted into the sliders.

[0009] Further, a vertical chute is opened on the surface of the central column corresponding to the hanging component, a screw rod is rotatably installed inside the vertical chute through a bearing and a built-in motor, a push plate is provided at the bottom of the rotating cylinder, and the push plate is threadedly sleeved on the screw rod, and the push plate is in pressing contact with the bottom of the slider.

[0010] Further, a plurality of return springs are fixed between the bottom of the push plate and the rotating cylinder, a vertical slide rail is fixed at the position of the circular ring slide rail corresponding to the vertical chute, and the sliders on both sides of the collecting barrel slide along the vertical chute and the vertical slide rail respectively.

[0011] Further, a toothed plate is fixed on the middle surface of the vertical slide rail. A gear is rotatably installed on the side frame outside the collection bucket. The gear is fixedly connected to the collection bucket. The gear meshes with the toothed plate through the middle position of the vertical slide rail.

[0012] Further, an electric winding seat is fixed on the top plate corresponding to the top of the clamping block and the downward notch. A pull rope is wound on the winding shaft of the electric winding seat. A hook is fixed at the movable end of the pull rope. Hanging rings are fixed at the outer ends of the piston rods, and the hook is buckled inside the hanging ring.

[0013] Further, the suspension assembly further includes a plug board. The plug board is slidably inserted inside the cross board. The plug board is fixedly connected to the circular ring slide rail. A fixed column is fixed at the bottom of the outer end of the plug board. Moving columns are fixed at the bottoms of both sides of the cross board. Both the fixed column and the moving column are telescopic rod structures.

[0014] Further, suspension frames are equidistantly fixed on the surface of the chain of the sprocket and chain device. The plug columns are fixed on both sides of the suspension frame. Translation notches are provided at positions where the vertical slide rail and the central column are parallel to the plug columns. A first electric push rod is fixed outside the circular ring slide rail, and the extending end of the first electric push rod is fixedly connected to the cross board.

[0015] Advantages of the present invention: 1. The present invention is fixed to the ground through the fixed column of the plug board and the two moving columns to maintain stability. The circular ring slide rail can be made closer to the water surface through the performance of the fixed column and the moving column that can adjust their own lengths.

[0016] 2. When the collection bucket moves upward along the vertical slide rail and the vertical chute of the central column in the present invention, the first electric push rod pushes the cross board to move outward along the plug board, moving the sprocket and chain device away from the circular ring slide rail. The purpose is that when the collection bucket moves along the vertical slide rail, it is flipped through the meshing of the gear and the toothed plate, so that the suction port faces upward. At this time, a certain flipping space is required. The outward movement of the sprocket and chain device can drive the already suspended collection bucket to move outward, and will not interfere with the flipping of the new collection bucket. After the collection bucket is flipped, the first electric push rod is used to pull the sprocket and chain device near the circular ring slide rail again. The cross board moves along the ground through the moving columns at the bottoms of both ends. At this time, the plug columns of the suspension frame just correspond to the translation notches and the sliders of the collection bucket. Driven by the sprocket and chain device, the plug columns are horizontally inserted into the sliders, and then the collection bucket is pushed away by the push of the suspension frame.

[0017] 3. After collecting samples, the collection barrel of the present invention is rotated to the elevated position. At this time, the extended end of the second electric push rod is retracted, and the screw is driven to rotate by the motor built into the center column. The push plate cooperates with the thread to move in the vertical direction, and at the same time, the slider is pushed to slide along the vertical slide groove. The sliders on both sides of the collection barrel slide upward along the vertical slide groove and the vertical slide rail respectively. When moving to the middle position, the gear of the side frame engages with the toothed plate to drive the collection barrel to flip 180 degrees, and the suction port opens upward to facilitate the delivery of samples.

[0018] 4. According to the present invention, as the rotating cylinder rotates, the collection barrel moves along the circular slide rail to the collection station. At this position, the outer slide block of the collection barrel corresponds to the downward notch of the circular slide rail, which facilitates the downward movement of the collection barrel. The inner slide block of the collection barrel is located between the bottom plate and the clamping block, and the clamping block is driven by the third electric push rod to move downward to clamp the slide block. At the same time, the extended end of the second electric push rod is retracted to release the connection between the rotating cylinder and the collection barrel. After the hook is manually connected to the hanging ring of the piston rod, the collection barrel is driven to be inserted into the water surface by extending the electric plug column. At the same time, the electric winding seat synchronously unwinds the pull rope. After reaching a certain depth, the electric winding seat rewinds the pull rope, and the pull rope pulls the movement of the piston rod to draw water into the collection barrel through the suction port. Then the collection barrel returns to be reconnected with the rotating cylinder and continues to rotate to the next lifting station.

[0019] 5. Compared with the prior art, the present invention arranges the collection buckets in a ring shape under the guidance and drive of the circular slide rail and the central column, and collects water quality at different depths in turn. The collection buckets after collection are transported to the hanging assembly through the guidance of the central column and stored on the hanging assembly. New collection buckets can be added in time to collect multiple groups of water quality. The storage is convenient and there is no need to frequently sort out the collected samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall front structure of a sampling device for measurement and detection of the present invention; Figure 2 It is a schematic diagram of the overall back structure of a sampling device for measurement and detection of the present invention; Figure 3 This is a schematic diagram of the connection between a collection component and a circular slide rail of a sampling device for metrological detection of the present invention; Figure 4 This is a schematic diagram of the connection between a guide component and a collection component of a sampling device for metrological detection according to the present invention; Figure 5 This is a schematic diagram of the bottom structure of a central column of a sampling device for measurement and detection according to the present invention; Figure 6 It is a schematic diagram of the side structure of a suspension assembly of a sampling device for metrological detection according to the present invention; Figure 7Schematic diagram of the connection between the collection bucket and the vertical slide rail and the central column of a sampling device for metrological detection according to the present invention; Figure 8 Schematic diagram of the connection between the gear and the toothed plate of a sampling device for metrological detection according to the present invention; Figure 9 Schematic diagram of the connection between the collection bucket and the suspension assembly of a sampling device for metrological detection according to the present invention.

[0021] In the figure: 1, circular ring slide rail; 11, inlet; 12, first electric push rod; 13, vertical slide rail; 14, translation notch; 15, toothed plate; 2, collection assembly; 21, collection bucket; 22, suction port; 23, side frame; 24, slider; 25, piston rod; 26, hanging ring; 27, gear; 3, guiding assembly; 31, central column; 32, vertical chute; 33, top plate; 34, electric winding seat; 35, pulling rope; 36, hook; 37, screw; 38, push plate; 39, return spring; 310, rotating cylinder; 311, second electric push rod; 312, electric plug post; 313, bottom plate; 314, clamping block; 315, third electric push rod; 4, suspension assembly; 41, cross plate; 42, plug board; 43, fixed column; 44, moving column; 45, mounting frame; 46, sprocket chain device; 47, suspension frame; 48, plug post. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0023] Please refer to Figures 1 to 9, the present invention provides a technical solution: a sampling device for metrological detection, including a circular ring slide rail 1. At the center of the inner circle of the circular ring slide rail 1, there is a guiding component 3. The guiding component 3 includes a central column 31. At the bottom of the central column 31, a rotating cylinder 310 is rotatably installed. On the surface of the rotating cylinder 310, multiple sets of collection components 2 are snap-fitted and installed. The collection component 2 includes a collection barrel 21. One end of the collection barrel 21 is provided with a suction port 22, and a piston rod 25 slides out from the other end of the collection barrel 21. On both sides of the collection barrel 21, side frames 23 are rotatably installed through bearings, and sliders 24 are fixed on the outer surfaces of the side frames 23. The sliders 24 slide along the inner part of the circular ring slide rail 1 and the surface of the rotating cylinder 310 respectively. On the back of the circular ring slide rail 1, there is a hanging component 4. The hanging component 4 includes a cross plate 41. At the top of the cross plate 41, a mounting frame 45 is fixed, and at the upper end of the mounting frame 45, a sprocket chain device 46 is installed. On the surface of the chain of the sprocket chain device 46, two sets of insertion posts 48 are equidistantly arranged, and the insertion posts 48 are inserted horizontally into the sliders 24 of the collection barrel 21. At the top of the central column 31, a top plate 33 is fixed, and one side of the top plate 33 is fixedly connected to the mounting frame 45. On one side of the circular ring slide rail 1, there is an adding port 11, and on the other side of the circular ring slide rail 1 corresponding to the adding port 11, there is a downward notch. When using the device, the collection barrels 21 are put into the inner part of the circular ring slide rail 1 one by one from the adding port 11. As the rotating cylinder 310 at the bottom of the central column 31 rotates, it drives the collection barrels 21 to move to the collection stations. The collection barrels 21 are inserted underwater together with the electric insertion posts 312. The descending depth and the depth of the collected water quality are adjusted according to the extended length of the electric insertion posts 312. Subsequently, the collection barrels 21 are retracted and rotated to the lifting station, moving upward along the central column 31, and cooperating with the hanging component 4 to be stored outside the chain of the sprocket chain device 46. By continuously adding new collection barrels 21 from the adding port 11, the water quality at different positions and different depths can be separately collected.

[0024] In this embodiment, second electric push rods 311 are fixedly arranged at equal intervals on the outer surface of the rotating cylinder 310. Jacks are formed on the inner side surface of the slider 24 corresponding to the extending ends of the second electric push rods 311, and the second electric push rods 311 are slidably inserted into the slider 24. The guiding assembly 3 further includes an electric inserting post 312. The electric inserting post 312 is slidably installed inside the central column 31, and the electric inserting post 312 slides out from the bottom of the rotating cylinder 310. A bottom plate 313 is fixed to the bottom of the electric inserting post 312, and the bottom plate 313 is in pressing contact with the bottom of the slider 24 on one side of the collection barrel 21. A clamping block 314 is arranged on the top of the bottom plate 313, and the clamping block 314 is in pressing contact with the top of the slider 24 of the collection barrel 21. A third electric push rod 315 is fixed between the clamping block 314 and the bottom plate 313. The positions where the bottom plate 313 and the clamping block 314 are located are collinear with the downward notch of the circular ring slide rail 1. An electric winding seat 34 is fixed to the top of the top plate 33 corresponding to the clamping block 314 and the downward notch, and a pulling rope 35 is wound on the winding shaft of the electric winding seat 34. A hook 36 is fixed to the movable end of the pulling rope 35. Hanging rings 26 are fixed to the outer ends of the piston rods 25, and the hook 36 is buckled inside the hanging ring 26. As the rotating cylinder 310 rotates, the collection barrel 21 moves along the circular ring slide rail 1 to the collection station. At this position, the outer slider 24 of the collection barrel 21 corresponds to the downward notch of the circular ring slide rail 1, which facilitates the downward movement of the collection barrel 21. The inner slider 24 of the collection barrel 21 is located between the bottom plate 313 and the clamping block 314. The third electric push rod 315 drives the clamping block 314 to move downward to clamp the slider 24. At the same time, the extending ends of the second electric push rods 311 retract, releasing the connection between the rotating cylinder 310 and the collection barrel 21. After manually connecting the hook 36 to the hanging ring 26 of the piston rod 25, the electric inserting post 312 extends to drive the collection barrel 21 to insert into the water surface. At the same time, the electric winding seat 34 synchronously pays out the pulling rope 35. After reaching a certain depth, the electric winding seat 34 winds up the pulling rope 35, and the pulling rope 35 pulls the piston rod 25 to move. Water is pumped into the collection barrel 21 through the suction port 22. Subsequently, the collection barrel 21 returns to reconnect with the rotating cylinder 310 and continues to rotate to the next lifting station. In this structure, the cooperation between the electric inserting post 312 and the central column 31 is actually a common electric push rod structure, and there is a motor inside the central column 31 that drives the rotating cylinder 310 to rotate independently. The collection barrel 21 fed in from the feeding port 11 moves along the circular ring slide rail 1 through the insertion of the second electric push rods 311 into the slider 24.

[0025] In this embodiment, a vertical chute 32 is formed on the surface of the central column 31 corresponding to the hanging assembly 4. A screw 37 is rotatably installed inside the vertical chute 32 through a bearing and a built-in motor. A push plate 38 is provided at the bottom of the rotating cylinder 310, and the push plate 38 is threadedly sleeved on the screw 37. The push plate 38 is in pressing contact with the bottom of the slider 24. A plurality of return springs 39 are fixed between the bottom of the push plate 38 and the rotating cylinder 310. A vertical slide rail 13 is fixed at the position of the circular slide rail 1 corresponding to the vertical chute 32. The sliders 24 on both sides of the collection bucket 21 slide along the vertical chute 32 and the vertical slide rail 13 respectively. A toothed plate 15 is fixed on the middle surface of the vertical slide rail 13. A gear 27 is rotatably installed on the side frame 23 outside the collection bucket 21. The gear 27 is fixedly connected to the collection bucket 21. The gear 27 meshes with the toothed plate 15 through the middle position of the vertical slide rail 13. After the sample is collected, the collection bucket 21 is rotated to the raising station. At this time, the extending end of the second electric push rod 311 retracts. The motor built in the central column 31 drives the screw 37 to rotate. The push plate 38 moves vertically in threaded cooperation and simultaneously pushes the slider 24 to slide along the vertical chute 32. The sliders 24 on both sides of the collection bucket 21 slide upward along the vertical chute 32 and the vertical slide rail 13 respectively. When moving to the middle position, the gear 27 of the side frame 23 meshes with the toothed plate 15 to drive the collection bucket 21 to flip 180 degrees, and the suction port 22 faces upward, facilitating the delivery of the sample.

[0026] In this embodiment, the suspension assembly 4 further includes a plug board 42. The plug board 42 is slidably inserted into the interior of the cross board 41, and the plug board 42 is fixedly connected to the circular ring slide rail 1. A fixing column 43 is fixedly installed at the bottom of the outer end of the plug board 42, and moving columns 44 are fixedly installed at the bottoms of both sides of the cross board 41. Both the fixing column 43 and the moving column 44 are telescopic rod structures. Suspension brackets 47 are fixedly installed at equal intervals on the surface of the chain of the sprocket and chain device 46. Plug posts 48 are fixed to both sides of the suspension brackets 47. Translation notches 14 are formed at positions parallel to the plug posts 48 on the vertical slide rail 13 and the central column 31. A first electric push rod 12 is fixedly installed on the outer side of the circular ring slide rail 1, and the extending end of the first electric push rod 12 is fixedly connected to the cross board 41. The device is fixed to the ground through the fixing column 43 of the plug board 42 and the two moving columns 44 to maintain stability. The circular ring slide rail 1 can be made closer to the water surface by the adjustable length performance of the fixing column 43 and the moving column 44 themselves. When the collection bucket 21 moves upward along the vertical slide rail 13 and the vertical chute 32 of the central column 31, the first electric push rod 12 pushes the cross board 41 to move outward along the plug board 42, moving the sprocket and chain device 46 away from the circular ring slide rail 1. The purpose of this is that when the collection bucket 21 moves along the vertical slide rail 13, it is flipped by the engagement of the gear 27 and the toothed plate 15, making the suction port 22 face upward. At this time, a certain flipping space is required. Moving the sprocket and chain device 46 outward can drive the already suspended collection bucket 21 to move outward, without interfering with the flipping of the new collection bucket 21. After the collection bucket 21 is flipped, the sprocket and chain device 46 is pulled back to near the circular ring slide rail 1 by the first electric push rod 12. The cross board 41 moves along the ground through the moving columns 44 at both ends. At this time, the plug posts 48 of the suspension brackets 47 just correspond to the translation notches 14 and the sliders 24 of the collection bucket 21. Driven by the sprocket and chain device 46, the plug posts 48 are horizontally inserted into the interior of the sliders 24. Subsequently, pushed by the suspension brackets 47, the collection bucket 21 is pushed away, and the sliders 24 are separated from the vertical slide rail 13 and the vertical chute 32 of the central column 31 along the translation notches 14. In this solution, the sliders 24 are not only provided with jacks corresponding to the second electric push rod 311 on the inner side, but also provided with jacks for inserting the plug posts 48 on the outer side.

[0027] When using the device, the collection buckets 21 are successively placed into the inner part of the circular ring slide rail 1 from the feeding port 11. As the rotating cylinder 310 at the bottom of the central column 31 rotates, along with the rotation of the rotating cylinder 310, the collection buckets 21 move along the circular ring slide rail 1 to the collection station. At this position, the outer slider 24 of the collection bucket 21 corresponds to the downward notch of the circular ring slide rail 1, facilitating the downward movement of the collection bucket 21. The inner slider 24 of the collection bucket 21 is located between the bottom plate 313 and the clamping block 314. The clamping block 314 is driven by the third electric push rod 315 to move downward to clamp the slider 24. At the same time, the extended end of the second electric push rod 311 retracts, releasing the connection between the rotating cylinder 310 and the collection bucket 21. After manually connecting the hook 36 with the hanging ring 26 of the piston rod 25, through the extension of the electric plug post 312, the collection bucket 21 is driven to insert into the water surface. At the same time, the electric winding seat 34 synchronously pays out the pulling rope 35. After reaching a certain depth, the electric winding seat 34 winds up the pulling rope 35. The pulling rope 35 pulls the piston rod 25 to move, and water is pumped into the collection bucket 21 through the suction port 22. Subsequently, the collection bucket 21 returns to reconnect with the rotating cylinder 310 and continues to rotate to the next lifting station. The collection bucket 21 after collecting the sample is rotated to the lifting station. At this time, the extended end of the second electric push rod 311 retracts. The motor built in the central column 31 drives the screw rod 37 to rotate. The push plate 38 moves vertically in threaded cooperation, and at the same time, it pushes the slider 24 to slide along the vertical chute 32. The two side sliders 24 of the collection bucket 21 slide upward along the vertical chute 32 and the vertical slide rail 13 respectively. When moving to the middle position, the gear 27 of the side frame 23 meshes with the toothed plate 15 to drive the collection bucket 21 to flip 180 degrees, and the suction port 22 faces upward, facilitating the delivery of the sample. When the collection bucket 21 moves upward along the vertical slide rail 13 and the vertical chute 32 of the central column 31, the first electric push rod 12 pushes the cross plate 41 to move outward along the plug board 42, moving the sprocket chain device 46 away from the circular ring slide rail 1. The purpose of this is that when the collection bucket 21 moves along the vertical slide rail 13, it flips through the meshing of the gear 27 and the toothed plate 15, making the suction port 22 face upward. At this time, a certain flipping space is required. Moving the sprocket chain device 46 outward can drive the already suspended collection bucket 21 to move outward, without interfering with the flipping of the new collection bucket 21. After the collection bucket 21 finishes flipping, the first electric push rod 12 pulls the sprocket chain device 46 back to near the circular ring slide rail 1. The cross plate 41 moves along the ground through the moving columns 44 at both ends of the bottom. At this time, the plug post 48 of the hanging frame 47 just corresponds to the translation notch 14 and the slider 24 of the collection bucket 21. Driven by the sprocket chain device 46, the plug post 48 is horizontally inserted into the slider 24. Subsequently, through the push of the hanging frame 47, the collection bucket 21 is pushed away. The slider 24 separates from the translation notch 14, the vertical slide rail 13 and the vertical chute 32 of the central column 31. By continuously adding new collection buckets 21 from the feeding port 11, water quality at different positions and different depths can be separately collected.

[0028] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0029] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sampling device for metrological detection, comprising a circular ring slide rail (1), characterized in that: A guiding component (3) is provided at the center of the inner circle of the circular slide rail (1). The guiding component (3) includes a central column (31). A rotating cylinder (310) is rotatably installed at the bottom of the central column (31). A plurality of collecting components (2) are snap-fitted and installed on the surface of the rotating cylinder (310). The collecting component (2) includes a collecting barrel (21). One end of the collecting barrel (21) is provided with a suction port (22), and a piston rod (25) slides out of the other end of the collecting barrel (21). The two sides of the collecting barrel (21) are rotatably installed with side frames (23) through bearings, and a slider (24) is fixed on the outer surface of the side frame (23). The sliders (24) slide along the inner part of the circular slide rail (1) and the surface of the rotating cylinder (310) respectively. A hanging component (4) is provided on the back of the circular slide rail (1). The hanging component (4) includes a cross plate (41). An installation frame (45) is fixed on the top of the cross plate (41), and a sprocket and chain device (46) is installed at the upper end of the installation frame (45). Two sets of insertion posts (48) are equidistantly arranged on the surface of the chain of the sprocket and chain device (46), and the insertion posts (48) are inserted horizontally into the sliders (24) of the collecting barrel (21). The top of the central column (31) is fixed with a top plate (33), and one side of the top plate (33) is fixedly connected to the installation frame (45). An adding port (11) is opened on one side of the circular slide rail (1), and a downward notch is opened on the other side of the circular slide rail (1) corresponding to the adding port (11).

2. The sampling device for metrological detection according to claim 1, wherein: The guiding component (3) further includes an electric insertion post (312). The electric insertion post (312) is slidably installed inside the central column (31), and the electric insertion post (312) slides out from the bottom of the rotating cylinder (310). A bottom plate (313) is fixed to the bottom of the electric insertion post (312), and the bottom plate (313) is in pressing contact with the bottom of the slider (24) on one side of the collecting barrel (21).

3. The sampling device for metrological detection according to claim 2, characterized in that: A clamping block (314) is provided on the top of the bottom plate (313), and the clamping block (314) is in pressing contact with the top of the slider (24) of the collecting barrel (21). A third electric push rod (315) is fixed between the clamping block (314) and the bottom plate (313). The positions where the bottom plate (313) and the clamping block (314) are located are on the same straight line as the downward notch of the circular slide rail (1).

4. The sampling device for metrological detection according to claim 3, characterized in that: A plurality of second electric push rods (311) are equidistantly fixed on the outer surface of the rotating cylinder (310). Insertion holes are opened on the inner side surface of the slider (24) corresponding to the extended ends of the second electric push rods (311), and the second electric push rods (311) are slidably inserted into the sliders (24).

5. A sampling device for metrological detection according to claim 4, characterized in that: A vertical chute (32) is opened on the surface of the central column (31) corresponding to the hanging component (4). A screw rod (37) is rotatably installed inside the vertical chute (32) through a bearing and a built-in motor. A push plate (38) is provided at the bottom of the rotating cylinder (310), and the push plate (38) is threadedly sleeved on the screw rod (37). The push plate (38) is in pressing contact with the bottom of the slider (24).

6. The sampling device for metrological detection according to claim 5, characterized in that: A plurality of return springs (39) are fixed between the bottom of the push plate (38) and the rotating cylinder (310). A vertical slide rail (13) is fixed at the position of the circular ring slide rail (1) corresponding to the vertical chute (32). The sliders (24) on both sides of the collection barrel (21) slide along the vertical chute (32) and the vertical slide rail (13) respectively.

7. A sampling device for metrological detection according to claim 6, characterized in that: A toothed plate (15) is fixed on the middle surface of the vertical slide rail (13). A gear (27) is rotatably installed on the side frame (23) outside the collection barrel (21). The gear (27) is fixedly connected to the collection barrel (21). The gear (27) meshes with the toothed plate (15) through the middle position of the vertical slide rail (13).

8. The sampling device for metrological detection according to claim 7, characterized in that: An electric winding seat (34) is fixed at the top of the top plate (33) corresponding to the clamping block (314) and the downward notch. A pulling rope (35) is wound on the winding shaft of the electric winding seat (34). A hook (36) is fixed at the movable end of the pulling rope (35). Hanging rings (26) are fixed at the outer ends of the piston rods (25), and the hook (36) is buckled inside the hanging ring (26).

9. The sampling device for metrological detection according to claim 7, characterized in that: The suspension assembly (4) further includes a plug board (42). The plug board (42) is slidably inserted into the inside of the cross board (41). The plug board (42) is fixedly connected to the circular ring slide rail (1). A fixed column (43) is fixed at the bottom of the outer end of the plug board (42). Moving columns (44) are fixed at the bottoms of both sides of the cross board (41). The fixed column (43) and the moving column (44) are both telescopic rod structures.

10. The sampling device for metrological detection according to claim 9, wherein: Suspension frames (47) are equidistantly fixed on the surface of the chain of the sprocket and chain device (46). Plug columns (48) are fixed on both sides of the suspension frame (47). Translation notches (14) are formed at positions of the vertical slide rail (13) and the central column (31) parallel to the plug column (48). A first electric push rod (12) is fixed outside the circular ring slide rail (1), and the extending end of the first electric push rod (12) is fixedly connected to the cross board (41).

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