Liquid sampling, metering and detecting device and using method thereof

Abstract

The invention relates to the technical field of measurement experiments, in particular to a liquid sampling, metering and detecting device and a using method thereof.The liquid sampling, metering and detecting device comprises a main sampling barrel, the inner side surface of the main sampling barrel is slidably connected with a main piston rod, and the outer side surface of the main sampling barrel is fixedly connected with an auxiliary storage barrel; a top mounting shell is fixedly connected to the outer side surface of the auxiliary storage barrel, a switching adjusting mechanism is arranged on the outer side surface of the main piston rod, a linkage opening and closing mechanism is arranged on the inner side surface of the auxiliary storage barrel, and a linkage lifting mechanism is arranged on the top surface of the main piston rod; when a main piston rod completes one time of downward pressing and rising circulation, a switching adjusting mechanism controls different auxiliary storage barrels, linkage opening and closing mechanisms and linkage lifting mechanisms respectively, the effect of extracting and outputting liquid in a main sampling barrel is achieved, and when the main sampling barrel extracts liquid with different depths or different liquids, through the arrangement of the four auxiliary storage barrels, the liquid in the main sampling barrel can be conveniently extracted. And four different liquids can be respectively stored and discharged at most.

Description

Technical Field

[0001] The present invention relates to the field of measurement experiment technology, and in particular to a liquid sampling metering and detection device and a use method thereof. Background Art

[0002] Liquid sampling and measurement is an important technology in laboratory analysis and industrial production. It involves accurately measuring and analyzing the volume, concentration and composition of liquid samples. In fields such as chemistry, biology, environmental science and food industry, accurate liquid sampling is essential to ensure product quality, comply with regulations and conduct scientific research.

[0003] Liquid sampling usually uses a sampling tube and a volumetric flask.

[0004] The existing patent (publication number: CN112098149B) discloses a liquid sampling metering and detection device, including a metering cylinder and a main piston rod arranged inside the metering cylinder, the top of the main piston rod is provided with a first cover body, the inner cylinder is coaxially provided with an inner cylinder, the bottom of the piston rod is provided with a groove upward along the axis, the upper part of the inner cylinder is arranged in the groove, the inner cylinder is provided with a secondary piston rod, the secondary piston rod passes through the inner cylinder, the main piston rod and the first cover body in sequence, and the top of the secondary piston rod is connected with a second cover body. In the above-mentioned device, the sampling device only has a sampling function, and during use, when sampling different liquids or layered liquids, when multi-layer sampling is required, it is necessary to go deep into different depths of the liquid, and it is necessary to repeatedly extend and remove the sampling device from the liquid, and it is also necessary to immediately move the liquid to the measuring bottle after extraction, which may be inflexible or inefficient when handling multiple liquids.

[0005] In view of this, we propose a liquid sampling, metering and detection device and a method of using the same. Summary of the invention

[0006] The purpose of the present invention is to provide a liquid sampling metering detection device and a method of using the same, so as to solve the problem that the liquid sampling metering detection device mentioned in the above background technology is relatively inconvenient when sampling different liquids or layered liquids. To achieve the above purpose, the present invention provides the following technical solutions: a liquid sampling metering detection device and a method of using the same, comprising a main sampling cylinder, the inner surface of which is slidably connected to a main piston rod, the outer surface of which is fixedly connected to an auxiliary storage cylinder, the outer surface of which is fixedly connected to a top mounting shell, the outer surface of which is fixedly connected to a switching adjustment mechanism, the inner surface of which is provided with a linkage opening and closing mechanism, and the top surface of which is provided with a linkage lifting mechanism.

[0007] Preferably, the number of the auxiliary storage cylinders is four, and the four auxiliary storage cylinders are distributed in a ring shape with the axis of the main sampling cylinder as the axis center.

[0008] Preferably, the inner surface of the auxiliary storage cylinder is slidably connected with an auxiliary piston rod, and the auxiliary piston rod is slidably connected to the inner surface of the auxiliary storage cylinder, the bottom surface of the auxiliary piston rod is fixedly connected with a piston push head, the outer surface of the piston push head is provided with a large diameter connecting groove, the inner surface of the large diameter connecting groove is slidably connected with an internal connecting column, the bottom surface of the internal connecting column is fixedly connected with a movable piston seat, the top surface of the auxiliary storage cylinder is fixedly connected with a top output valve, the bottom surface of the auxiliary storage cylinder is fixedly connected with a bottom exhaust valve, the outer surface of the auxiliary storage cylinder is fixedly connected with a main-auxiliary connecting valve, and the outer surface of the auxiliary piston rod is fixedly connected with a driven lifting rod.

[0009] Preferably, the number of the large diameter connecting grooves is six, and the six large diameter connecting grooves are distributed in a ring with the axis of the piston push head as the rotation center, the radial dimension of the large diameter connecting groove is larger than the radial dimension of the internal connecting column, the output end of the top output valve faces the outer surface of the auxiliary storage cylinder, the output end of the bottom exhaust valve faces the bottom surface of the auxiliary storage cylinder, and the two ends of the main-auxiliary connecting valve are respectively connected to the main sampling cylinder and the main-auxiliary connecting valve.

[0010] Preferably, the switching adjustment mechanism includes an internal lifting platform, the internal lifting platform is threadedly connected to the outer surface of the main piston rod, the outer surface of the main sampling cylinder is slidably connected with a magnetic rotating ring, the outer surface of the main piston rod is provided with a rotation limiting groove, the outer surface of the main piston rod is slidably connected with a rotating push block, the outer surface of the main piston rod is fixedly connected with a downward pushing block, the top surface of the main sampling cylinder is rotatably connected with a top rotating ring, the top surface of the main sampling cylinder is rotatably connected with a sliding rotating cylinder, the outer surface of the sliding rotating cylinder is fixedly connected with a rotating support frame, and the outer surface of the rotating support frame is fixedly connected The cam is fixedly connected with a rotation limit block, and the outer surface of the rotation limit block is slidably connected with a limit matching block. The outer surface of the rotation support frame is fixedly connected with a limit rod spring, and the inner surface of the limit rod spring is sleeved with a path limit rod. The outer surface of the sliding rotation cylinder is provided with a path limit groove, and the outer surface of the main piston rod is sleeved with a downward pressure reset spring. The top surface of the sliding rotation cylinder is fixedly connected with a top toggle rod, and the bottom surface of the top rotating ring is fixedly connected with a bottom revolving seat, and the inner surface of the bottom revolving seat is slidably connected with a vertical movable column, and the top surface of the vertical movable column is fixedly connected with a driven push-pull rod.

[0011] Preferably, the internal lifting platform is magnetically connected to the magnetic rotating ring, the top rotating ring is fixedly connected to the outer surface of the sliding rotating cylinder, the path limiting rod is rotatably connected to the rotating support frame, the limiting matching block is fixedly connected to the path limiting rod, the path limiting rod is slidably connected to the outer surface of the rotating pushing block, the two ends of the downward pressure reset spring are respectively abutted against the main sampling cylinder and the rotating pushing block, and the bottom surface of the magnetic rotating ring is slidably connected to the top surface of the driven lifting rod.

[0012] Preferably, the linkage opening and closing mechanism includes a rotating connecting rod, which passes through the main and auxiliary connecting valves and is rotatably connected to the inner surface thereof, the outer surface of the rotating connecting rod is fixedly connected to a connecting valve core, the top surface of the rotating connecting rod is fixedly connected to a driven rotating cam, the bottom surface of the rotating connecting rod is fixedly connected to a rotating push rod, the outer surface of the rotating connecting rod is rotatably connected to an exhaust valve support rod, the bottom surface of the main sampling cylinder is fixedly connected to a fixed mounting disk, an opening and closing path groove is provided on the inner surface of the fixed mounting disk, an opening and closing path groove is slidably connected to an opening and closing control flap, the outer surface of the opening and closing control flap is fixedly connected to a sealing gasket, the bottom surface of the fixed mounting disk is rotatably connected to a rotating connecting ring, the outer surface of the rotating connecting ring is fixedly connected to a rotating push-pull hook, and one end of the rotating push-pull hook is fixedly connected to an opening and closing reset spring.

[0013] Preferably, the connecting valve core is rotationally connected to the inner surface of the main and auxiliary connecting valves, the driven rotating cam is meshed with the outer surface of the driven push-pull rod, the rotating push rod is slidably connected to the outer surface of the exhaust valve support rod, the top surface of the rotating push rod is provided with a pushing protrusion for moving the exhaust valve support rod, the rotating push rod is slidably connected to the outer surface of the rotating push-pull hook, the exhaust valve support rod is slidably connected to the bottom surface of the bottom exhaust valve, the number of the opening and closing control flaps is six, and the six opening and closing control flaps are distributed in a ring shape with the axis of the fixed mounting disk as the axis center, and the six opening and closing control flaps are rotationally connected to the fixed mounting disk, the number of the rotating push-pull hooks is four, and the four rotating push-pull hooks are distributed in a ring shape with the axis of the rotating connecting ring as the axis center, and the two ends of the opening and closing reset spring are respectively fixedly connected to the rotating push-pull hook and the bottom surface of the main sampling tube.

[0014] Preferably, the linkage lifting mechanism includes a top rotating frame, the top rotating frame is rotatably connected to the top surface of the main piston rod, the inner side surface of the top rotating frame is rotatably connected to a rotating connecting column, the inner surface of the rotating connecting column is slidably connected to a main rod sliding rod, the other end of the main rod sliding rod is bolted to an auxiliary rod sliding rod, the main rod sliding rod and the auxiliary rod sliding rod are rotatably connected to an L-rod support frame at both ends of the bolt, the bottom surface of the L-rod support frame is fixedly connected to a path groove clamping block, both ends of the top mounting shell are provided with turnover path grooves, and the outer surface of the L-rod support frame is slidably connected There is a lifting driving block, the top surface of the auxiliary storage cylinder is installed with an auxiliary rod top fixing seat, the outer surface of the auxiliary rod top fixing seat is fixedly connected with an auxiliary rod reset spring, the outer surface of the auxiliary rod top fixing seat is fixedly connected with an auxiliary rod limiting block, the outer surface of the auxiliary rod top fixing seat is rotatably connected with the auxiliary rod top rotating seat, the inner surface of the auxiliary rod top rotating seat is rotatably connected with the auxiliary rod connecting column, the outer surface of the auxiliary rod connecting column is fixedly connected with a separation hinged rod, the other end of the separation hinged rod is fixedly connected with the auxiliary rod separation column, and the outer surface of the auxiliary rod separation column is fixedly connected with a separation reset spring.

[0015] Preferably, the top rotating frame is slidingly connected to the outer surface of the top toggle rod, the main rod sliding rod and the auxiliary rod sliding rod are connected by bolts to form an L-shaped rod, the path groove clamping block is slidingly connected to the inner surface of the turnover path groove, the lifting drive block passes through the auxiliary rod sliding rod, the auxiliary rod top fixed seat is fixedly connected to the top surface of the auxiliary piston rod, the auxiliary rod return spring is sleeved at the rotation connection between the auxiliary rod top fixed seat and the auxiliary rod top rotating seat, the auxiliary rod sliding rod passes through the auxiliary rod connecting column and is slidingly connected to its inner surface, the separation hinged rod passes through the inner surface of the auxiliary rod separation column, and the two ends of the separation return spring are respectively fixedly connected to the auxiliary rod connecting column and the auxiliary rod separation column.

[0016] A liquid sampling and measuring detection device and a method for using the same, comprising the following steps:

[0017] S1. Manually press down the main piston rod to exhaust the air inside the main sampling tube, and place the main sampling tube under the liquid to be sampled. At this time, the main piston rod is at the bottom and the auxiliary piston rod is at the top. Use the lifting and driving block on the linkage lifting mechanism to press down the auxiliary rod sliding rod. The auxiliary rod sliding rod drives the main rod sliding rod on the other side to rise. At this time, the main piston rod follows the main rod sliding rod to rise and draw the liquid into the main sampling tube;

[0018] S2, the switching adjustment mechanism adjusts the height of the internal lifting platform through the external magnetic rotating ring to control the maximum lifting height of the main piston rod and control the liquid extraction capacity, and uses the lifting drive block on the linkage lifting mechanism to lift the auxiliary rod sliding rod and drive the auxiliary piston rod to lift up. At this time, the auxiliary piston rod pulls the internal piston to form a negative pressure inside the auxiliary storage cylinder, and the auxiliary piston rod drives the driven lifting rod to lift the driven push-pull rod to push the driven rotating cam to rotate. The driven rotating cam rotates and drives the connecting valve core on the linkage opening and closing mechanism to open the main-auxiliary connecting valve between the main sampling cylinder and the auxiliary storage cylinder, and at the same time closes the fluid input and output port at the bottom of the main sampling cylinder, and closes the bottom exhaust valve at the bottom of the auxiliary storage cylinder. At this time, the main piston rod presses down the auxiliary rod sliding rod to rise, and presses the fluid in the main sampling cylinder into the auxiliary storage cylinder through the main-auxiliary connecting valve for storage;

[0019] S3, use the lifting and lowering drive block on the lifting mechanism to press down the auxiliary piston rod again, and lift up the main piston rod at the same time. The auxiliary piston rod is pressed down. Since the driven rotating cam is no longer connected to the driven push-pull rod at this time, the linkage opening and closing mechanism is reset under the action of the opening and closing reset spring, the main and auxiliary connecting valves are closed, and the fluid input and output ports at the bottom of the main sampling cylinder are opened. The main sampling cylinder is drawn into the fluid again, and the fluid inside the auxiliary storage cylinder is pressed into the top of the piston through the large-diameter connecting groove on the piston rod, waiting for the next time when the auxiliary piston rod is pressed down, the fluid on the top of the piston will be output through the top output valve on the auxiliary storage cylinder;

[0020] S4. Whenever the main piston rod completes a cycle of pressing down and rising, the switching adjustment mechanism presses down the sliding rotating cylinder by rotating the push block to make it rotate ninety degrees, and drives the top toggle rod at the top and the bottom revolving seat at the bottom to rotate. The top toggle rod is used to toggle the top revolving frame on the linkage lifting mechanism, so that the linkage lifting mechanism connects to the auxiliary piston rod on the next auxiliary storage cylinder, and the bottom revolving seat makes the driven push-pull rod rotate to the next driven rotating cam, so that after each cycle of the main piston rod, the auxiliary storage cylinder controlled by the linkage will be switched.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, through the arrangement of the auxiliary storage cylinder and the linked lifting mechanism, during use, the main piston rod controlling the main sampling cylinder and the auxiliary piston rod controlling the auxiliary storage cylinder can move simultaneously but in opposite directions. According to the different states of the main sampling cylinder, the bottom exhaust valve and the main-auxiliary connecting valve, and the different movement directions of the auxiliary piston rod, when the bottom exhaust valve is opened and the main-auxiliary connecting valve is closed, the auxiliary piston rod presses down the air so that the air can only be discharged from the bottom exhaust valve, and the auxiliary piston rod rises to form a negative pressure, and absorbs the liquid in the main sampling cylinder after the main-auxiliary connecting valve is opened. When the bottom exhaust valve and the main-auxiliary connecting valve are both closed, the auxiliary piston rod presses down to transport the liquid to the top of the piston head by using the large-diameter connecting groove, and after the auxiliary piston rod rises, the fluid on the top of the piston head is output from the top output valve, thereby achieving the effect of extracting and outputting the liquid inside the main sampling cylinder. When the main sampling cylinder extracts different depths or different liquids, up to four different liquids can be stored through the arrangement of four auxiliary storage cylinders.

[0023] In the present invention, through the arrangement of the auxiliary storage cylinder and the linkage opening and closing mechanism, during use, the lifting and lowering of the auxiliary piston rod is utilized to drive the cam structure to rotate, thereby realizing the opening and closing of the bottom of the main sampling cylinder and the main-auxiliary connecting valve. The two valves control the opening and closing simultaneously but in opposite states. When the bottom of the main sampling cylinder is closed, the main-auxiliary connecting valve is opened to draw the internal fluid of the main sampling cylinder into the auxiliary storage cylinder. When the bottom of the main sampling cylinder is opened and the main-auxiliary connecting valve is closed, the internal fluid of the auxiliary storage cylinder is output through the top output valve, thereby realizing the effect of controlling the extraction and discharge state of the auxiliary storage cylinder.

[0024] In the present invention, by setting up the switching adjustment mechanism, during use, every time the main piston rod completes a cycle of pressing down and rising, the switching adjustment mechanism presses down the sliding rotating cylinder by rotating the push block to make it rotate ninety degrees, and utilizes the rotation of the top toggle rod at the top and the bottom rotating seat at the bottom to connect with the auxiliary storage cylinders at different positions, thereby achieving the switching effect, so that each auxiliary storage cylinder can store and discharge liquid in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic side view of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the main sampling tube and the switching adjustment mechanism cooperating with each other in the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5This is a schematic diagram of the structure of the main sampling cylinder and the auxiliary storage cylinder cooperating with each other in the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle;

[0031] Figure 7 The magnetic rotating ring and the driven lifting rod of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle;

[0033] Fig. 9 It is a schematic diagram of the structure of the main sampling tube and the linkage opening and closing mechanism cooperating with each other in the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the main sampling tube and the linkage lifting mechanism cooperating with each other in the present invention;

[0035] Fig.11 It is a schematic diagram of the structure in which the main rod sliding rod, the auxiliary rod sliding rod, the auxiliary rod top fixing seat, the auxiliary rod top rotating seat, the auxiliary rod connecting column, and the auxiliary rod separating column cooperate with each other in the present invention;

[0036] Fig.12 For the present invention Fig.11 Enlarged view of point E in the middle;

[0037] Fig.13 For the present invention Fig.11 Enlarged view of point F in the middle.

[0038] In the figure: 1, main sampling cylinder; 11, main piston rod; 2, auxiliary storage cylinder; 21, auxiliary piston rod; 211, piston push head; 2111, large diameter connecting groove; 212, internal connecting column; 213, movable piston seat; 22, top output valve; 23, bottom exhaust valve; 24, main and auxiliary connecting valve; 25, driven lifting rod; 3, top mounting shell; 4, switching adjustment mechanism; 41, internal lifting platform; 42, magnetic rotation ring; 4 3. Rotation limiting groove; 44. Rotation push block; 45. Press push block; 46. Top rotating ring; 47. Sliding rotating cylinder; 471. Rotation support frame; 472. Rotation limit block; 473. Limit matching block; 474. Limit rod spring; 475. Path limit rod; 48. Path limit groove; 49. Press reset spring; 410. Top toggle rod; 411. Bottom swivel seat; 412. Vertical movable column; 413. Push-pull rod; 5, linkage opening and closing mechanism; 51, rotating connecting rod; 511, connecting valve core; 52, driven rotating cam; 53, rotating push rod; 54, exhaust valve support rod; 55, fixed installation plate; 551, opening and closing path groove; 56, opening and closing control flap; 561, sealing gasket; 57, rotating connecting ring; 58, rotating push-pull hook; 59, opening and closing reset spring; 6, linkage lifting mechanism; 61, top rotating frame; 62, Rotating connecting column; 63, main rod sliding rod; 64, auxiliary rod sliding rod; 65, L rod support frame; 66, path slot clamping block; 661, turnover path slot; 67, lifting drive block; 68, auxiliary rod top fixing seat; 681, auxiliary rod reset spring; 682, auxiliary rod limit block; 69, auxiliary rod top rotating seat; 610, auxiliary rod connecting column; 6101, separation hinged rod; 611, auxiliary rod separation column; 6111, separation reset spring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 13The present invention provides a technical solution: a liquid sampling metering detection device and a method of using the same, comprising a main sampling cylinder 1, the inner surface of the main sampling cylinder 1 is slidably connected with a main piston rod 11, the outer surface of the main sampling cylinder 1 is fixedly connected with an auxiliary storage cylinder 2, the outer surface of the auxiliary storage cylinder 2 is fixedly connected with a top mounting shell 3, the outer surface of the main piston rod 11 is provided with a switching adjustment mechanism 4, the inner surface of the auxiliary storage cylinder 2 is provided with a linkage opening and closing mechanism 5, and the top surface of the main piston rod 11 is provided with a linkage lifting mechanism 6, the main sampling cylinder 1 is used to extract the required liquid, and store the extracted liquid in four auxiliary storage cylinders 2 respectively, so as to realize the sub-sampling metering storage of fluid samples.

[0041] The number of auxiliary storage cylinders 2 is four, and the four auxiliary storage cylinders 2 are distributed in a ring with the axis of the main sampling cylinder 1 as the axis center.

[0042] The inner surface of the auxiliary storage cylinder 2 is slidably connected with an auxiliary piston rod 21, and the auxiliary piston rod 21 is slidably connected to the inner surface of the auxiliary storage cylinder 2. The bottom surface of the auxiliary piston rod 21 is fixedly connected with a piston push head 211, and a large-diameter connecting groove 2111 is provided on the outer surface of the piston push head 211. The inner surface of the large-diameter connecting groove 2111 is slidably connected with an internal connecting column 212, and the bottom surface of the internal connecting column 212 is fixedly connected with a movable piston seat 213. The top surface of the auxiliary storage cylinder 2 is fixedly connected with a top output valve 22, and the bottom surface of the auxiliary storage cylinder 2 is fixedly connected with a bottom exhaust valve 23 The outer surface of the auxiliary storage cylinder 2 is fixedly connected with a main-auxiliary connecting valve 24, and the outer surface of the auxiliary piston rod 21 is fixedly connected with a driven lifting rod 25. Through the arrangement of the auxiliary storage cylinder 2 and the internal components, during use, during the lifting and lowering of the main piston rod 11, the auxiliary piston rod 21 is driven by the linkage lifting mechanism 6 to realize the opposite lifting process. When the auxiliary piston rod 21 descends, in the initial state, the exhaust valve support rod 54 on the switching adjustment mechanism 4 is not connected to the bottom exhaust valve 23 and the bottom exhaust valve 23 is a one-way valve that can only discharge outwards. At this time, the auxiliary piston rod 21 drives the piston push head 2 at the bottom 11 and the movable piston seat 213 descend to exhaust the internal gas. When the auxiliary piston rod 21 rises, the internal piston part also rises. Since the bottom exhaust valve 23 is a one-way valve, it is impossible to extract gas from the bottom, and negative pressure is formed inside the auxiliary storage cylinder 2. When the linkage opening and closing mechanism 5 opens the main-auxiliary connecting valve 24, and at this time the exhaust valve support rod 54 contacts with the bottom exhaust valve 23, the bottom exhaust valve 23 cannot exhaust gas to the outside, and the main sampling cylinder 1 is connected to the auxiliary storage cylinder 2. At this time, the negative pressure is used to draw the liquid in the main sampling cylinder 1 into the auxiliary storage cylinder 2. When the auxiliary piston rod 21 descends again, the main-auxiliary connecting valve 24 is opened again. When the piston pushes the piston head 211 and the piston seat 213 is connected via the large diameter connecting groove 2111 and the internal connecting column 212, there is a certain gap in the middle. The fluid can flow into the top of the piston push head 211 through the gap, and the fluid at the top of the piston is discharged from the top output valve 22 when the piston rises next time, thereby achieving the effect of exhausting air, extracting fluid by negative pressure and discharging it outward. In addition, the movement direction of the auxiliary piston rod 21 is opposite to that of the main piston rod 11, so that the main sampling cylinder 1 and the auxiliary storage cylinder 2 can work at the same time.

[0043] The number of large-diameter connecting grooves 2111 is six, and the six large-diameter connecting grooves 2111 are distributed in a ring shape with the axis of the piston push head 211 as the rotation center. The radial dimension of the large-diameter connecting groove 2111 is larger than the radial dimension of the internal connecting column 212. The output end of the top output valve 22 faces the outer surface of the auxiliary storage cylinder 2, and the output end of the bottom exhaust valve 23 faces the bottom surface of the auxiliary storage cylinder 2. The two ends of the main-auxiliary connecting valve 24 are respectively connected to the main sampling cylinder 1 and the main-auxiliary connecting valve 24. The multiple large-diameter connecting grooves 2111 and the internal connecting column 212 increase the connection stability, and through the gap, when the bottom exhaust valve 23 is closed, the fluid can be squeezed to the top for output, and the top output valve 22 is used to discharge the fluid. 22. The setting of the bottom exhaust valve 23 and the main-auxiliary connecting valve 24. The auxiliary storage cylinder 2 is in different states. The top output valve 22 is normally open, while the bottom exhaust valve 23 and the main-auxiliary connecting valve 24 can be switched. When the bottom exhaust valve 23 is opened and the main-auxiliary connecting valve 24 is closed, the auxiliary piston rod 21 presses down and the air can only be discharged from the bottom exhaust valve 23. The auxiliary piston rod 21 rises to form a negative pressure, and absorbs the liquid in the main sampling cylinder 1 after the main-auxiliary connecting valve 24 is opened. When the bottom exhaust valve 23 and the main-auxiliary connecting valve 24 are both closed, the auxiliary piston rod 21 presses down to use the large-diameter connecting groove 2111 to transport the liquid to the top of the piston head, and after the auxiliary piston rod 21 rises, the fluid on the top of the piston head is output from the top output valve 22.

[0044] The switching adjustment mechanism 4 includes an internal lifting platform 41, which is threadedly connected to the outer surface of the main piston rod 11, a magnetic rotating ring 42 is slidably connected to the outer surface of the main sampling cylinder 1, a rotation limiting groove 43 is provided on the outer surface of the main piston rod 11, a rotating push block 44 is slidably connected to the outer surface of the main piston rod 11, a downward push block 45 is fixedly connected to the outer surface of the main piston rod 11, a top rotating ring 46 is rotatably connected to the top surface of the main sampling cylinder 1, a sliding rotating cylinder 47 is rotatably connected to the top surface of the main sampling cylinder 1, a rotating support frame 471 is fixedly connected to the outer surface of the rotating support frame 471, a rotating limit block 472 is fixedly connected to the outer surface of the rotating limit block 472 The surface is slidably connected to the limited matching block 473, the outer surface of the rotating support frame 471 is fixedly connected to the limited rod spring 474, the inner surface of the limited rod spring 474 is sleeved with a path limiting rod 475, the outer surface of the sliding rotating cylinder 47 is provided with a path limiting groove 48, the outer surface of the main piston rod 11 is sleeved with a downward pressure reset spring 49, the top surface of the sliding rotating cylinder 47 is fixedly connected with a top toggle rod 410, the bottom surface of the top rotating ring 46 is fixedly connected with a bottom rotating seat 411, the inner surface of the bottom rotating seat 411 is slidably connected with a vertical movable column 412, and the top surface of the vertical movable column 412 is fixedly connected with a driven push-pull rod 413. By switching the setting of the adjustment mechanism 4, during use, the magnetic rotating ring 46 is magnetically attracted to the rotating ring 46. 2 When the outside rotates, it rotates on the main piston rod 11 through magnetic attraction and the internal lifting platform 41, and the height change of the internal lifting platform 41 is realized by threaded connection, so as to limit the maximum rising distance of the main piston rod 11 to limit the liquid volume extracted into the main sampling cylinder 1 each time, and the descent does not affect the fixing of the main piston rod 11 to the bottom to discharge the internal air. Each time the main piston rod 11 descends, it drives the pressing push block 45 to press down the rotating push block 44. The rotating push block 44 can slide on the main piston rod 11 but is restricted by the rotation limiting groove 43 and cannot rotate. The two ends of the rotating push block 44 extend into the path limiting groove 48 of the sliding rotating cylinder 47. In the initial state, the rotating push block 44 is pushed to the top by the pressing return spring 49. When the rotating push block 44 When pressed down, it first contacts with the path limiting rod 475. The path limiting rod 475 is a rotatable rod. The initial state is reset to an inclined state by the limiting rod spring 474, but the rotation angle is limited by the rotation limiting block 472 and the limiting matching block 473. When the path limiting rod 475 rotates clockwise downward to the maximum angle, it is aligned with the oblique side of the path limiting groove 48. When it rotates counterclockwise upward, it is aligned with the straight side of the path limiting groove 48 at most. When the rotating push block 44 is pressed down, the path limiting rod 475 cannot be pressed down. The rotating push block 44 can only rotate along the slope formed by the path limiting rod 475 and the path limiting groove 48 relative to the sliding rotating cylinder 47. Since only the sliding rotating cylinder 47 can rotate, the sliding rotating cylinder 47 actually rotates.When the main piston rod 11 and the downward push block 45 rise and no longer squeeze the rotating push block 44, they rise under the action of the downward return spring 49. During the rising process, they will contact the path limiting rod 475. At this time, the path limiting rod 475 can rotate upward counterclockwise, so that the rotating push block 44 can return to its original position. The lifting and lowering of the rotating push block 44 drives the sliding rotating cylinder 47 to realize one rotation, and the rotation angle is 90 degrees. During the rotation of the sliding rotating cylinder 47, the top toggle rod 410 at the top and the bottom peripheral rod 410 at the bottom are respectively driven. The rotating seat 411 rotates, and the vertical movable column 412 and the driven push-pull rod 413 installed on the bottom rotating seat 411 will be lifted up when the magnetic rotating ring 42 is lifted. The lifting of the magnetic rotating ring 42 is lifted by the driven lifting rod 25 on the auxiliary storage cylinder 2 when the auxiliary piston rod 21 rises, realizing the control of the cam part of the linkage lifting mechanism 6. The top toggle rod 410 and the bottom rotating seat 411 are respectively connected to the linkage lifting mechanism 6 at the top of the entire device and the linkage opening and closing mechanism 5 at the bottom, so as to realize the switching to control the auxiliary storage cylinder 2 on different sides.

[0045] The internal lifting platform 41 is magnetically connected to the magnetic rotating ring 42, the top rotating ring 46 is fixedly connected to the outer surface of the sliding rotating cylinder 47, the path limiting rod 475 is rotatably connected to the rotating support frame 471, the limiting matching block 473 is fixedly connected to the path limiting rod 475, the path limiting rod 475 is slidably connected to the outer surface of the rotating push block 44, the two ends of the downward pressing reset spring 49 are respectively against the main sampling cylinder 1 and the rotating push block 44, the bottom surface of the magnetic rotating ring 42 is slidably connected to the top surface of the driven lifting rod 25, and the internal mechanism is adjusted by magnetic changes. Since there is no connection, there is no need to groove the main sampling tube 1 to ensure that the internal space is closed. The rotating limit block 472 and the limit matching block 473 are both incomplete arcs with the same radius. The arc length of the rotating limit block 472 is larger, and the limit matching block 473 can only rotate within the arc-shaped notch of the rotating limit block 472, thereby limiting the rotation angle of the path limiting rod 475, thereby controlling the moving path of the rotating push block 44. After the magnetic rotating ring 42 is lifted by the driven lifting rod 25, it continues to lift the vertical movable column 412 and the driven push-pull rod 413, thereby realizing rotation controlled by the cam.

[0046] The linkage opening and closing mechanism 5 includes a rotating connecting rod 51, which penetrates the main and auxiliary connecting valves 24 and is rotatably connected to the inner surface thereof, a connecting valve core 511 is fixedly connected to the outer surface of the rotating connecting rod 51, a driven rotating cam 52 is fixedly connected to the top surface of the rotating connecting rod 51, a rotating push rod 53 is fixedly connected to the bottom surface of the rotating connecting rod 51, an exhaust valve support rod 54 is rotatably connected to the outer surface of the rotating connecting rod 51, a fixed mounting plate 55 is fixedly connected to the bottom surface of the main sampling tube 1, an opening and closing path groove 551 is provided on the inner surface of the fixed mounting plate 55, and an opening and closing control flap 5 is slidably connected to the inner surface of the opening and closing path groove 551 6. The outer surface of the opening and closing control flap 56 is fixedly connected with a sealing gasket 561, and the bottom surface of the fixed mounting plate 55 is rotatably connected with a rotating connecting ring 57. The outer surface of the rotating connecting ring 57 is fixedly connected with a rotating push-pull hook 58. One end of the rotating push-pull hook 58 is fixedly connected with an opening and closing reset spring 59. Through the setting of the linkage opening and closing mechanism 5, during use, the connecting valve core 511 and the rotating push rod 53 connected to the outer side of the rotating connecting rod 51 respectively control the opening and closing of the main and auxiliary connecting valves 24 and the bottom of the main sampling cylinder 1. After the auxiliary piston rod 21 on the auxiliary storage cylinder 2 is lifted, the driven push-pull rod 413 is lifted by the driven lifting rod 25. After the driven push-pull rod 413 is lifted The driven rotating cam 52 on the rotating connecting rod 51 is meshed with the driven rotating cam 52, and the direct motion is converted into the rotation of the rotating connecting rod 51 through the cam. In the initial state, the connecting valve core 511 closes the main and auxiliary connecting valves 24, and the rotating push rod 53 opens the opening and closing control flap 56. After the rotating connecting rod 51 is rotated, the connecting valve core 511 rotates the main and auxiliary connecting valves 24 to open, and the rotating push rod 53 pushes the rotating push-pull hook 58 to drive the rotating connecting ring 57 to rotate. The rotating connecting ring 57 pulls the internal opening and closing control flap 56 to move inward on the opening and closing path groove 551 on the fixed mounting plate 55, and closes the fluid interaction port at the bottom of the main sampling tube 1. When the auxiliary piston rod 21 descends, the driven push-pull rod 413 no longer It contacts the driven rotating cam 52, pushes the rotating push-pull hook 58 to reset under the action of the opening and closing reset spring 59, and pushes the rotating push rod 53 back. At this time, the main-auxiliary connecting valve 24 is closed again, and the fluid channel at the bottom of the main sampling cylinder 1 is opened again, so that the switch at the bottom of the main sampling cylinder 1 and the auxiliary storage cylinder 2 are connected and switched at the same time but with opposite switch states. When the rotating push rod 53 rotates for the first time, the surface protrusion will push the exhaust valve support rod 54 to rotate it to the bottom of the bottom exhaust valve 23, so that the bottom exhaust valve 23 cannot be opened. Since the exhaust valve support rod 54 is not provided with a reset structure, it will maintain the current state to cooperate with the different valve states required by the auxiliary storage cylinder 2.

[0047] The connecting valve core 511 is rotatably connected to the inner surface of the main and auxiliary connecting valves 24, the driven rotating cam 52 is meshed with the outer surface of the driven push-pull rod 413, the rotating push rod 53 is slidably connected to the outer surface of the exhaust valve support rod 54, the top surface of the rotating push rod 53 is provided with a pushing protrusion for toggling the exhaust valve support rod 54, the rotating push rod 53 is slidably connected to the outer surface of the rotating push-pull hook 58, the exhaust valve support rod 54 is slidably connected to the bottom surface of the bottom exhaust valve 23, the number of opening and closing control flaps 56 is six, and the six opening and closing control flaps 56 are annularly distributed with the axis of the fixed mounting plate 55 as the axis center, and the six opening and closing control flaps 56 are rotatably connected to the fixed mounting plate 55, the number of rotating push-pull hooks 58 is four, and the four rotating push-pull hooks 58 are annularly distributed with the axis of the rotating connecting ring 57 as the axis center, and the two ends of the opening and closing reset spring 59 are respectively connected to the rotating push-pull hook 58 and the main sampling tube 1 The bottom surface of the main sampling tube 1 is fixedly connected, the connecting valve core 511 controls the connection between the main sampling tube 1 and the auxiliary storage tube 2 by rotating the connecting rod 51, the driven rotating cam 52 and the driven push-pull rod 413 realize the conversion of direct motion into rotation, and the position of the driven push-pull rod 413 is controlled by the switching adjustment mechanism 4 to realize the control of the rotating connecting rod 51 on the auxiliary storage tube 2 at different positions respectively, the bottom exhaust valve 23 pushes the exhaust valve support rod 54 to switch between normally open and normally closed states by rotating the push rod 53, the opening and closing control flap 56 is similar to a shutter structure, and can move inward or outward at the same time by pushing and pulling to control the fluid channel at the bottom of the main sampling tube 1, and a sealing gasket 561 is installed between the opening and closing control flaps 56 to ensure airtightness after closing, different rotating push rods 53 can push the rotating push-pull hook 58, and the reset of the rotating push-pull hook 58 can also drive all the rotating connecting rods 51 to reset by rotating the push rod 53.

[0048] The linkage lifting mechanism 6 includes a top rotating frame 61, which is rotatably connected to the top surface of the main piston rod 11, and the inner surface of the top rotating frame 61 is rotatably connected to a rotating connecting column 62, and the inner surface of the rotating connecting column 62 is slidably connected to a main rod sliding rod 63, and the other end of the main rod sliding rod 63 is bolted to an auxiliary rod sliding rod 64, and the bolt ends of the main rod sliding rod 63 and the auxiliary rod sliding rod 64 are rotatably connected to an L-rod support frame 65, and the bottom surface of the L-rod support frame 65 is fixedly connected to a path groove clamping block 66, and both ends of the top mounting shell 3 are provided with a turnover path groove 661, and the outer surface of the L-rod support frame 65 is slidably connected to a lifting driving block 67, and the top surface of the auxiliary storage cylinder 2 is installed with an auxiliary rod top fixing seat 68. The outer surface of the fixing seat 68 is fixedly connected with an auxiliary rod reset spring 681, the outer surface of the auxiliary rod top fixing seat 68 is fixedly connected with an auxiliary rod limit block 682, the outer surface of the auxiliary rod top fixing seat 68 is rotatably connected with the auxiliary rod top rotating seat 69, the inner surface of the auxiliary rod top rotating seat 69 is rotatably connected with the auxiliary rod connecting column 610, the outer surface of the auxiliary rod connecting column 610 is fixedly connected with a separation hinged rod 6101, the other end of the separation hinged rod 6101 is fixedly connected with an auxiliary rod separation column 611, the outer surface of the auxiliary rod separation column 611 is fixedly connected with a separation reset spring 6111, through the setting of the linkage lifting mechanism 6, during use, the main rod sliding rod 63 and the auxiliary rod sliding rod 64 are connected by bolts to form an L-shaped rod, and the angle formed by the two rods The size can be adjusted by rotation and bolts can be clamped to fix the current angle. The main rod sliding rod 63 and the auxiliary rod sliding rod 64 are respectively inserted into the rotating connecting column 62 and the auxiliary rod connecting column 610 and can be slidably connected. The rotating connecting column 62 and the auxiliary rod connecting column 610 can rotate to adapt to the different heights and rotation angles of the main rod sliding rod 63 and the auxiliary rod sliding rod 64. The connecting bolts of the main rod sliding rod 63 and the auxiliary rod sliding rod 64 are rotatably connected to the L-rod support frame 65. When the push-pull lifting drive block 67 is used for vertical movement, the auxiliary rod sliding rod 64 will be pressed down or lifted, and the L-shaped rod composed of the two rods will rotate around the connection, so that the main rod sliding rod 63 passively descends or rises, and drives the rotating connecting column 62 and the auxiliary rod connecting column 610 to move vertically, realizing the main activity The plug rod 11 and the auxiliary piston rod 21 move in opposite directions in the vertical direction. Since the top toggle rod 410 on the switching adjustment mechanism 4 is in contact with the top rotating frame 61, the switching adjustment mechanism 4 will toggle the top rotating frame 61 to rotate ninety degrees when it rotates, so that the entire linkage lifting mechanism 6 can drive the auxiliary piston rod 21 in different positions respectively. When the linkage lifting mechanism 6 rotates, the L-rod support frame 65 is stuck in the turnover path groove 661 through the path groove clamping block 66 to limit the moving path so that it can rotate, and the auxiliary rod sliding rod 64 will push away the part of the auxiliary rod connecting column 610 installed on the auxiliary piston rod 21. The auxiliary piston rod 21 is first connected to the rotatable auxiliary rod top rotating seat 69 through the auxiliary rod top fixed seat 68. The auxiliary rod sliding rod 64 pushes it down and rotates around the connection when it rotates.The rotating parts of the auxiliary rod top fixed seat 68 and the auxiliary rod top rotating seat 69 are limited in rotation angle by the auxiliary rod limit block 682 and the auxiliary rod reset spring 681 to realize reset after being pushed away. In order to prevent the auxiliary rod sliding rod 64 from being clamped, a detachable separation hinge rod 6101 is provided on the auxiliary rod top rotating seat 69 to connect the auxiliary rod separation column 611. The separation hinge rod 6101 is sleeved inside the auxiliary rod separation column 611. When the auxiliary rod sliding rod 64 rotates, the auxiliary rod separation column 611 will be pushed away from the auxiliary rod connecting column 610 and the hinge of the separation hinge rod 6101 will be exposed. At this time, continuing to push the auxiliary rod separation column 611 will rotate from the hinge of the separation hinge rod 6101, so that the auxiliary rod sliding rod 64 It can pass through the auxiliary rod connecting column 610 to connect with the next auxiliary rod connecting column 610. After the auxiliary rod sliding rod 64 passes, it will no longer push down the auxiliary rod connecting column 610 and the auxiliary rod separation column 611. The auxiliary rod separation column 611 is reset by the separation reset spring 6111 to connect with the auxiliary rod connecting column 610 again and wrap the separation hinge rod 6101 inside. At this time, the hinge of the separation hinge rod 6101 is wrapped and cannot rotate. The rotating part of the auxiliary rod top fixed seat 68 and the auxiliary rod top rotating seat 69 is reset by the auxiliary rod reset spring 681, realizing the opposite movement of the main piston rod 11 and the auxiliary piston rod 21, and realizing the separate control of the linkage lifting mechanism 6 at different positions by switching the adjustment mechanism 4.

[0049] The top rotating frame 61 is slidably connected to the outer surface of the top toggle rod 410, the main rod sliding rod 63 and the auxiliary rod sliding rod 64 are connected by bolts to form an L-shaped rod, the path groove clamping block 66 is slidably connected to the inner surface of the turnover path groove 661, the lifting drive block 67 passes through the auxiliary rod sliding rod 64, the auxiliary rod top fixed seat 68 is fixedly connected to the top surface of the auxiliary piston rod 21, the auxiliary rod reset spring 681 is sleeved at the rotation connection between the auxiliary rod top fixed seat 68 and the auxiliary rod top rotating seat 69, the auxiliary rod sliding rod 64 passes through the auxiliary rod connecting column 610 and is slidably connected to its inner surface, the separation hinged rod 6101 passes through the inner surface of the auxiliary rod separation column 611, and the two ends of the separation reset spring 6111 are respectively connected to the auxiliary rod connecting column 610 and the auxiliary rod separation column 6 11 is fixedly connected. When the switching adjustment mechanism 4 is rotated, the top rotating frame 61 will be driven to rotate ninety degrees so that the entire linkage lifting mechanism 6 can drive the auxiliary piston rod 21 at different positions respectively. The L-shaped rod formed by the main rod sliding rod 63 and the auxiliary rod sliding rod 64 rotates around the connection so that the two ends move in opposite directions during vertical movement. The L-rod support frame 65 is clamped in the turnover path groove 661 through the path groove clamping block 66 to limit the moving path and make it rotate, thereby switching the auxiliary rod connecting column 610 connected to the auxiliary rod sliding rod 64. The auxiliary rod reset spring 681 and the separation reset spring 6111 are respectively used to reset the auxiliary rod top fixed seat 68 and the auxiliary rod top rotating seat 69 rotation connection part and the movement of the auxiliary rod connecting column 610 and the separation hinged rod 6101 hinged part.

[0050] In this embodiment, Figure 1 As shown, the main sampling cylinder 1 is used to extract the liquid to be extracted, and store the extracted liquid in four auxiliary storage cylinders 2 respectively, so as to realize the divided sampling and metering storage of the fluid sample;

[0051] In this embodiment, Figure 2 As shown, the height change of the internal lifting platform 41 is realized by threaded connection, so as to limit the maximum rising distance of the main piston rod 11 and thus limit the liquid volume extracted into the main sampling tube 1 each time, and the sliding rotating tube 47 is pressed down by rotating the push block 44 to make it rotate 90 degrees, and drive the top toggle rod 410 at the top and the bottom rotating seat 411 at the bottom to rotate;

[0052] In this embodiment, Figure 3 As shown, the path limiting rod 475 is a rotatable rod, which is reset to an inclined state by a limiting rod spring 474, but is limited in rotation angle by a rotation limiting block 472 and a limiting matching block 473. When the path limiting rod 475 rotates clockwise downward to a maximum angle, it is aligned with the oblique side of the path limiting groove 48, and when it rotates counterclockwise upward, it is aligned with the straight side of the path limiting groove 48 at most;

[0053] In this embodiment, Figure 4 As shown, when the rotating push block 44 is pressed down, the path limiting rod 475 cannot be pressed down, and the rotating push block 44 can only follow the slope formed by the path limiting rod 475 and the path limiting groove 48, and will contact the path limiting rod 475 during the rising process. At this time, the path limiting rod 475 can rotate upward counterclockwise, so that the rotating push block 44 can return to its original position;

[0054] In this embodiment, Figure 5 As shown, the auxiliary piston rod 21 drives the piston push head 211 and the movable piston seat 213 at the bottom to descend, and discharge the internal gas. When the auxiliary piston rod 21 rises, the internal piston part also rises. Since the bottom exhaust valve 23 is a one-way valve, it is impossible to extract air from the bottom, and negative pressure is formed inside the auxiliary storage cylinder 2. The main sampling cylinder 1 and the auxiliary storage cylinder 2 are connected through the main-auxiliary connection valve 24.

[0055] In this embodiment, Figure 6 As shown, the piston push head 211 and the movable piston seat 213 are connected through the large diameter connecting groove 2111 and the internal connecting column 212, and there is a certain gap in the middle, and the fluid can flow into the top of the piston push head 211 through the gap;

[0056] In this embodiment, Figure 7As shown, the vertical movable column 412 and the driven push-pull rod 413 installed on the bottom swivel seat 411 will be lifted up when the magnetic rotating ring 42 is lifted, and the lifting of the magnetic rotating ring 42 is lifted by the driven lifting rod 25 on the auxiliary storage cylinder 2 when the auxiliary piston rod 21 rises, thereby realizing the control of the cam part of the linkage lifting mechanism 6;

[0057] In this embodiment, Figure 8 As shown, after the auxiliary piston rod 21 on the auxiliary storage cylinder 2 is lifted, the driven push-pull rod 413 is lifted by the driven lifting rod 25. After the driven push-pull rod 413 is lifted, it engages with the driven rotating cam 52 on the rotating connecting rod 51, and the linear motion is converted into the rotation of the rotating connecting rod 51 through the cam.

[0058] In this embodiment, Fig. 9 As shown, in the initial state, the connecting valve core 511 closes the main and auxiliary connecting valves 24, and the rotating push rod 53 opens the opening and closing control flap 56. After the rotating connecting rod 51 rotates, the connecting valve core 511 rotates the main and auxiliary connecting valves 24 to open, and the rotating push rod 53 pushes the rotating push-pull hook 58 to drive the rotating connecting ring 57 to rotate. The rotating connecting ring 57 pulls the internal opening and closing control flap 56 to move inward on the opening and closing path groove 551 on the fixed mounting plate 55, closing the fluid interaction port at the bottom of the main sampling tube 1, pushing the rotating push-pull hook 58 to reset under the action of the opening and closing reset spring 59, and pushing the rotating push rod 53 back;

[0059] In this embodiment, Fig.10 As shown, the main rod sliding rod 63 and the auxiliary rod sliding rod 64 are connected by bolts to form an L-shaped rod. The angle formed by the two rods can be adjusted by rotation and clamped with bolts to fix the current angle. The main rod sliding rod 63 and the auxiliary rod sliding rod 64 are respectively inserted into the rotating connecting column 62 and the auxiliary rod connecting column 610 and can be slidably connected. The rotating connecting column 62 and the auxiliary rod connecting column 610 can both rotate to adapt to the different heights and rotation angles of the main rod sliding rod 63 and the auxiliary rod sliding rod 64.

[0060] In this embodiment, Fig.11 As shown, when the linkage lifting mechanism 6 rotates, the L-rod support frame 65 is clamped in the turnover path groove 661 through the path groove clamping block 66 to limit the moving path so that it can rotate, and the auxiliary rod sliding rod 64 will push away the part of the auxiliary rod connecting column 610 installed on the auxiliary piston rod 21;

[0061] In this embodiment, Fig.12 As shown, the auxiliary rod top fixed seat 68 is connected to the rotatable auxiliary rod top rotating seat 69, and the auxiliary rod sliding rod 64 pushes it down and rotates around the connection when rotating. The rotating parts of the auxiliary rod top fixed seat 68 and the auxiliary rod top rotating seat 69 are limited in rotation angle by the auxiliary rod limit block 682 and the auxiliary rod reset spring 681 to achieve reset after being pushed away;

[0062] In this embodiment, Fig.13 As shown, a detachable separation hinged rod 6101 is provided on the auxiliary rod top rotating seat 69 to connect the auxiliary rod separation column 611, and the separation hinged rod 6101 is sleeved inside the auxiliary rod separation column 611. When the auxiliary rod sliding rod 64 rotates, the auxiliary rod separation column 611 will be pushed away from the auxiliary rod connecting column 610, and the hinge of the separation hinged rod 6101 will be exposed. At this time, continuing to push the auxiliary rod separation column 611 will cause it to rotate from the hinge of the separation hinged rod 6101.

[0063] A liquid sampling and measuring detection device and a method for using the same, comprising the following steps:

[0064] S1. Manually press down the main piston rod 11 to exhaust the air inside the main sampling tube 1, and place the main sampling tube 1 under the liquid to be sampled. At this time, the main piston rod 11 is at the bottom and the auxiliary piston rod 21 is at the top. Use the lifting and driving block 67 on the linkage lifting mechanism 6 to press down the auxiliary rod sliding rod 64. The auxiliary rod sliding rod 64 drives the main rod sliding rod 63 on the other side to rise. At this time, the main piston rod 11 follows the main rod sliding rod 63 to rise and draw the liquid into the inside of the main sampling tube 1.

[0065] S2, the switching adjustment mechanism 4 adjusts the height of the internal lifting platform 41 through the external magnetic rotating ring 42 to control the maximum lifting height of the main piston rod 11 and the liquid extraction capacity, and uses the lifting drive block 67 on the linkage lifting mechanism 6 to lift the auxiliary rod sliding rod 64 and drive the auxiliary piston rod 21 to lift up. At this time, the auxiliary piston rod 21 pulls the internal piston to form a negative pressure inside the auxiliary storage cylinder 2, and the auxiliary piston rod 21 drives the driven lifting rod 25 to lift the driven push-pull rod 413 to push the driven rotating cam 52 to rotate. The driven rotating cam 52 rotates and drives the connecting valve spool 511 on the linkage opening and closing mechanism 5 to open the main-auxiliary connecting valve 24 between the main sampling cylinder 1 and the auxiliary storage cylinder 2, and at the same time close the fluid input and output port at the bottom of the main sampling cylinder 1, and close the bottom exhaust valve 23 at the bottom of the auxiliary storage cylinder 2. At this time, the main piston rod 11 presses the auxiliary rod sliding rod 64 downward to lift, and the fluid in the main sampling cylinder 1 is pressed into the auxiliary storage cylinder 2 through the main-auxiliary connecting valve 24 for storage;

[0066] S3, use the lifting drive block 67 on the lifting mechanism to press down the auxiliary piston rod 21 again, and lift up the main piston rod 11 at the same time. The auxiliary piston rod 21 is pressed down. Since the driven rotating cam 52 is no longer connected to the driven push-pull rod 413 at this time, the linkage opening and closing mechanism 5 is reset under the action of the opening and closing reset spring 59, the main-auxiliary connecting valve 24 is closed, and the fluid input and output port at the bottom of the main sampling cylinder 1 is opened. The main sampling cylinder 1 is drawn into the fluid again, and the fluid inside the auxiliary storage cylinder 2 is pressed into the top of the piston through the large-diameter connecting groove 2111 on the piston rod, waiting for the next time when the auxiliary piston rod 21 is pressed down, the fluid on the top of the piston will be output through the top output valve 22 on the auxiliary storage cylinder 2;

[0067] S4. Whenever the main piston rod 11 completes a downward pressing and ascending cycle, the switching adjustment mechanism 4 presses down the sliding rotating cylinder 47 by rotating the pushing block 44 to make it rotate 90 degrees, and drives the top toggle rod 410 at the top and the bottom revolving seat 411 at the bottom to rotate. The top toggle rod 410 is used to toggle the top rotating frame 61 on the linkage lifting mechanism 6, so that the linkage lifting mechanism 6 is connected to the auxiliary piston rod 21 on the next auxiliary storage cylinder 2. The bottom revolving seat 411 makes the driven push-pull rod 413 rotate to the next driven rotating cam 52, so that after each cycle of the main piston rod 11, the auxiliary storage cylinder 2 controlled by the linkage will be switched.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid sampling and metering detection device, comprising a main sampling cylinder (1), characterized in that: The inner surface of the main sampling cylinder (1) is slidably connected to a main piston rod (11), the outer surface of the main sampling cylinder (1) is fixedly connected to an auxiliary storage cylinder (2), the outer surface of the auxiliary storage cylinder (2) is fixedly connected to a top mounting shell (3), the outer surface of the main piston rod (11) is provided with a switching adjustment mechanism (4), the inner surface of the auxiliary storage cylinder (2) is provided with a linkage opening and closing mechanism (5), and the top surface of the main piston rod (11) is provided with a linkage lifting mechanism (6); The number of the auxiliary storage cylinders (2) is four, and the four auxiliary storage cylinders (2) are distributed in a ring shape with the axis of the main sampling cylinder (1) as the axis center.

2. A liquid sampling and measuring detection device according to claim 1, characterized in that: The inner surface of the auxiliary storage cylinder (2) is slidably connected to an auxiliary piston rod (21), and the auxiliary piston rod (21) is slidably connected to the inner surface of the auxiliary storage cylinder (2). The bottom surface of the auxiliary piston rod (21) is fixedly connected to a piston push head (211), and the outer surface of the piston push head (211) is provided with a large-diameter connecting groove (2111). The inner surface of the large-diameter connecting groove (2111) is slidably connected to an internal connecting column (212), and the bottom surface of the internal connecting column (212) is fixedly connected to a movable piston seat (213). The top surface of the auxiliary storage cylinder (2) is fixedly connected to a top output valve (22), and the bottom surface of the auxiliary storage cylinder (2) is fixedly connected to a bottom exhaust valve (23). The outer surface of the auxiliary storage cylinder (2) is fixedly connected to a main-auxiliary connecting valve (24), and the outer surface of the auxiliary piston rod (21) is fixedly connected to a driven lifting rod (25).

3. A liquid sampling and measuring detection device according to claim 2, characterized in that: The number of the large-diameter connecting grooves (2111) is six, and the six large-diameter connecting grooves (2111) are distributed in a ring shape with the axis of the piston push head (211) as the rotation center. The radial dimension of the large-diameter connecting groove (2111) is greater than the radial dimension of the internal connecting column (212). The output end of the top output valve (22) faces the outer surface of the auxiliary storage cylinder (2), and the output end of the bottom exhaust valve (23) faces the bottom surface of the auxiliary storage cylinder (2). The two ends of the main-auxiliary connecting valve (24) are respectively connected to the main sampling cylinder (1) and the main-auxiliary connecting valve (24).

4. A liquid sampling and measuring detection device according to claim 1, characterized in that: The switching adjustment mechanism (4) comprises an internal lifting platform (41), the internal lifting platform (41) is threadedly connected to the outer surface of the main piston rod (11), the outer surface of the main sampling cylinder (1) is slidably connected to a magnetic rotating ring (42), the outer surface of the main piston rod (11) is provided with a rotation limiting groove (43), the outer surface of the main piston rod (11) is slidably connected to a rotating push block (44), the outer surface of the main piston rod (11) is fixedly connected to a downward pushing block (45), the top surface of the main sampling cylinder (1) is rotatably connected to a top rotating ring (46), the top surface of the main sampling cylinder (1) is rotatably connected to a sliding rotating cylinder (47), the outer surface of the sliding rotating cylinder (47) is fixedly connected to a rotating support frame (471), and the outer surface of the rotating support frame (471) is fixedly connected to a rotating limit block ( 472), the outer surface of the rotation limit block (472) is slidably connected to the limit matching block (473), the outer surface of the rotation support frame (471) is fixedly connected to the limit rod spring (474), the inner surface of the limit rod spring (474) is sleeved with a path limit rod (475), the outer surface of the sliding rotation cylinder (47) is provided with a path limit groove (48), the outer surface of the main piston rod (11) is sleeved with a downward pressure reset spring (49), the top surface of the sliding rotation cylinder (47) is fixedly connected to the top toggle rod (410), the bottom surface of the top rotating ring (46) is fixedly connected to the bottom swivel seat (411), the inner surface of the bottom swivel seat (411) is slidably connected to the vertical movable column (412), and the top surface of the vertical movable column (412) is fixedly connected to the driven push-pull rod (413).

5. A liquid sampling and measuring detection device according to claim 4, characterized in that: The internal lifting platform (41) is magnetically connected to the magnetic rotating ring (42), the top rotating ring (46) is fixedly connected to the outer surface of the sliding rotating cylinder (47), the path limiting rod (475) is rotatably connected to the rotating support frame (471), the limiting matching block (473) is fixedly connected to the path limiting rod (475), the path limiting rod (475) is slidably connected to the outer surface of the rotating push block (44), the two ends of the downward pressure reset spring (49) are respectively abutted against the main sampling cylinder (1) and the rotating push block (44), and the bottom surface of the magnetic rotating ring (42) is slidably connected to the top surface of the driven lifting rod (25).

6. A liquid sampling and measuring detection device according to claim 1, characterized in that: The linkage opening and closing mechanism (5) comprises a rotating connecting rod (51), the rotating connecting rod (51) passes through the main and auxiliary connecting valves (24) and is rotatably connected to the inner surface thereof, the outer surface of the rotating connecting rod (51) is fixedly connected to a connecting valve core (511), the top surface of the rotating connecting rod (51) is fixedly connected to a driven rotating cam (52), the bottom surface of the rotating connecting rod (51) is fixedly connected to a rotating push rod (53), the outer surface of the rotating connecting rod (51) is rotatably connected to an exhaust valve support rod (54), and the bottom surface of the main sampling cylinder (1) is fixedly connected to the exhaust valve support rod (54). A fixed mounting plate (55) is fixedly connected, the inner surface of the fixed mounting plate (55) is provided with an opening and closing path groove (551), the inner surface of the opening and closing path groove (551) is slidably connected with an opening and closing control flap (56), the outer surface of the opening and closing control flap (56) is fixedly connected with a sealing gasket (561), the bottom surface of the fixed mounting plate (55) is rotatably connected with a rotating connecting ring (57), the outer surface of the rotating connecting ring (57) is fixedly connected with a rotating push-pull hook (58), and one end of the rotating push-pull hook (58) is fixedly connected with an opening and closing reset spring (59).

7. A liquid sampling and measuring detection device according to claim 6, characterized in that: The connecting valve core (511) is rotatably connected to the inner surface of the main and auxiliary connecting valves (24), the driven rotating cam (52) is meshed with the outer surface of the driven push-pull rod (413), the rotating push rod (53) is slidably connected to the outer surface of the exhaust valve support rod (54), the top surface of the rotating push rod (53) is provided with a pushing protrusion for moving the exhaust valve support rod (54), the rotating push rod (53) is slidably connected to the outer surface of the rotating push-pull hook (58), the exhaust valve support rod (54) is connected to the bottom exhaust valve (23) The bottom surface is slidably connected, the number of the opening and closing control flaps (56) is six, and the six opening and closing control flaps (56) are distributed in a ring shape with the axis of the fixed mounting plate (55) as the axis, and the six opening and closing control flaps (56) are rotatably connected to the fixed mounting plate (55), the number of the rotating push-pull hooks (58) is four, and the four rotating push-pull hooks (58) are distributed in a ring shape with the axis of the rotating connecting ring (57) as the axis, and the two ends of the opening and closing reset spring (59) are respectively fixedly connected to the rotating push-pull hook (58) and the bottom surface of the main sampling tube (1).

8. The liquid sampling and measuring detection device according to claim 1, characterized in that: The linkage lifting mechanism (6) comprises a top rotating frame (61), the top rotating frame (61) is rotatably connected to the top surface of the main piston rod (11), the inner surface of the top rotating frame (61) is rotatably connected to a rotating connecting column (62), the inner surface of the rotating connecting column (62) is slidably connected to a main rod sliding rod (63), the other end of the main rod sliding rod (63) is bolted to an auxiliary rod sliding rod (64), the bolt ends of the main rod sliding rod (63) and the auxiliary rod sliding rod (64) are rotatably connected to an L rod support frame (65), the bottom surface of the L rod support frame (65) is fixedly connected to a path groove clamping block (66), both ends of the top mounting shell (3) are provided with a turnover path groove (661), and the outer surface of the L rod support frame (65) is slidably connected to a lifting drive block (67), an auxiliary rod top fixing seat (68) is installed on the top surface of the auxiliary storage cylinder (2), the outer surface of the auxiliary rod top fixing seat (68) is fixedly connected with an auxiliary rod reset spring (681), the outer surface of the auxiliary rod top fixing seat (68) is fixedly connected with an auxiliary rod limit block (682), the outer surface of the auxiliary rod top fixing seat (68) is rotatably connected with an auxiliary rod top rotating seat (69), the inner surface of the auxiliary rod top rotating seat (69) is rotatably connected with an auxiliary rod connecting column (610), the outer surface of the auxiliary rod connecting column (610) is fixedly connected with a separation hinged rod (6101), the other end of the separation hinged rod (6101) is fixedly connected with an auxiliary rod separation column (611), and the outer surface of the auxiliary rod separation column (611) is fixedly connected with a separation reset spring (6111).

9. A liquid sampling and measuring detection device according to claim 8, characterized in that: The top rotating frame (61) is slidably connected to the outer surface of the top toggle rod (410), the main rod sliding rod (63) and the auxiliary rod sliding rod (64) are connected by bolts to form an L-shaped rod, the path groove clamping block (66) is slidably connected to the inner surface of the turnover path groove (661), the lifting drive block (67) passes through the auxiliary rod sliding rod (64), the auxiliary rod top fixed seat (68) is fixedly connected to the top surface of the auxiliary piston rod (21), the auxiliary rod reset spring (681) is sleeved at the rotation connection between the auxiliary rod top fixed seat (68) and the auxiliary rod top rotating seat (69), the auxiliary rod sliding rod (64) passes through the auxiliary rod connecting column (610) and is slidably connected to its inner surface, the separation hinge rod (6101) passes through the inner surface of the auxiliary rod separation column (611), and the two ends of the separation reset spring (6111) are respectively fixedly connected to the auxiliary rod connecting column (610) and the auxiliary rod separation column (611).

10. The method for using the liquid sampling and measuring detection device and the method for using the same according to claim 1 comprises the following steps: S1. First, manually press down the main piston rod (11) to exhaust the air inside the main sampling tube (1), and place the main sampling tube (1) below the liquid to be sampled. At this time, the main piston rod (11) is at the bottom and the auxiliary piston rod (21) is at the top. Use the lifting and driving block (67) on the linkage lifting mechanism (6) to press down the auxiliary rod sliding rod (64). The auxiliary rod sliding rod (64) drives the main rod sliding rod (63) on the other side to rise. At this time, the main piston rod (11) follows the main rod sliding rod (63) to rise and draw the liquid into the inside of the main sampling tube (1); S2, the switching adjustment mechanism (4) adjusts the height of the internal lifting platform (41) through the external magnetic rotating ring (42) to control the maximum lifting height of the main piston rod (11) and the volume of liquid extraction, and uses the lifting driving block (67) on the linkage lifting mechanism (6) to lift the auxiliary rod sliding rod (64) and drive the auxiliary piston rod (21) to lift up. At this time, the auxiliary piston rod (21) pulls the internal piston to form a negative pressure inside the auxiliary storage cylinder (2), and the auxiliary piston rod (21) drives the driven lifting rod (25) to lift the driven push-pull rod (413) to push the driven rotating rod. The moving cam (52) rotates, and the driven rotating cam (52) rotates to drive the connecting valve core (511) on the linkage opening and closing mechanism (5) to open the main-auxiliary connecting valve (24) between the main sampling cylinder (1) and the auxiliary storage cylinder (2), and at the same time close the fluid input and output ports at the bottom of the main sampling cylinder (1), and close the bottom exhaust valve (23) at the bottom of the auxiliary storage cylinder (2). At this time, the main piston rod (11) presses down the auxiliary rod sliding rod (64) to rise, and the fluid in the main sampling cylinder (1) is pressed into the auxiliary storage cylinder (2) through the main-auxiliary connecting valve (24) for storage; S3, use the lifting drive block (67) on the lifting mechanism again to press down the auxiliary piston rod (21), and at the same time lift up the main piston rod (11). The auxiliary piston rod (21) is pressed down because the driven rotating cam (52) is no longer connected to the driven push-pull rod (413). The linkage opening and closing mechanism (5) is reset under the action of the opening and closing reset spring (59), the main-auxiliary connecting valve (24) is closed, and the fluid input and output port at the bottom of the main sampling cylinder (1) is opened. The main sampling cylinder (1) is drawn into the fluid again, and the internal fluid of the auxiliary storage cylinder (2) is pressed into the top of the piston through the large-diameter connecting groove (2111) on the piston rod, waiting for the next time when the auxiliary piston rod (21) is pressed down, the fluid at the top of the piston will be output through the top output valve (22) on the auxiliary storage cylinder (2); S4. Whenever the main piston rod (11) completes a cycle of pressing down and rising, the switching adjustment mechanism (4) presses down the sliding rotating cylinder (47) by rotating the push block (44) to make it rotate ninety degrees, and drives the top toggle rod (410) at the top and the bottom swivel seat (411) at the bottom to rotate. The top toggle rod (410) is used to toggle the top swivel frame (61) on the linkage lifting mechanism (6), so that the linkage lifting mechanism (6) is connected to the auxiliary piston rod (21) on the next auxiliary storage cylinder (2). The bottom swivel seat (411) causes the driven push-pull rod (413) to rotate to the next driven swivel cam (52), so that after each cycle of the main piston rod (11), the auxiliary storage cylinder (2) controlled by the linkage is switched.

Images