CN112525612B - Sampling method of liquid sampling device capable of being sealed annularly for chemical detection - Google Patents
Sampling method of liquid sampling device capable of being sealed annularly for chemical detection Download PDFInfo
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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Abstract
The invention discloses a sampling method of a liquid sampling device capable of being sealed annularly for chemical detection, which comprises a sampling protection cylinder and a sampling cylinder body, wherein the sampling protection cylinder is sleeved with the sampling cylinder body, the lower end of the sampling protection cylinder is provided with a cylinder bottom plate, the side wall of the sampling protection cylinder, which is close to the lower end, is provided with a movable hole at equal distance, a position limiting ring is connected in the movable hole in a penetrating manner, and a limiting support frame is connected in the movable hole in a penetrating manner. According to the sampling method of the annular sealing liquid sampling device for chemical detection, provided by the invention, the sampling protection cylinder is sleeved with the sampling cylinder body, the telescopic protective cover is fixedly connected to the outer wall of the upper end of the sampling cylinder body, and the sampling cylinder body is wrapped by the sampling protection cylinder and the telescopic protective cover, so that the problem that liquid adhered to the surface of the sampling cylinder body drops after sampling can be solved, the environment is protected, pollution is prevented, and meanwhile, the liquid sampled in the sampling cylinder body is not easily polluted by the outside.
Description
Technical Field
The invention relates to the technical field of chemical detection instruments, in particular to a sampling method of a liquid sampling device capable of being sealed annularly for chemical detection.
Background
Chemical sampling refers to the sampling work for determining the chemical components and contents thereof in the ore body and surrounding rocks thereof, products (such as raw ores and concentrates) produced by mines, tailings, waste rocks and rocks related to the minerals, and comprises the whole process of sampling work such as chemical sample collection, processing, analysis, quality inspection and the like, and the chemical sampling in the production mines is mainly carried out in underground tunnels, open-air or underground stopes and mined ores. Sampling device is the equipment of a kind of sample of taking, often needs to carry out the sampling test to raw materials or reaction liquid in chemical experiment, but the function of quantitative sample is not possessed to current sampler, if the solvent of the same kind of liquid is taken many times to needs then all need the staff to carry out accurate measurement at every turn, has consequently not only increased staff's work load, leads to measuring inaccurate moreover easily, and then influences the measuring result.
Chinese patent CN211452984U discloses a liquid sampling device for chemical detection, including the sample casing, sliding connection has rather than the piston of looks adaptation on the inner wall of sample casing, and the top fixedly connected with mounting panel of piston, the mid point department at mounting panel top is connected with the threaded rod through the bearing rotation, and the top of threaded rod runs through the sample casing and extends to its outside fixedly connected with operation panel. The utility model discloses a sample casing, piston, mounting panel, bearing, threaded rod, operation panel, thread piece, glass cover, body, annular seal board, sealing spring, connecting rod, branch and the sealed mutually supporting between filling up have realized a liquid sampling device for chemical detection, can adjust to appropriate capacity as taking needs, can take many times, and the solvent volume of not only having guaranteed to take at every turn is the same, provides very big facility for the staff moreover, and then has improved work efficiency greatly.
Although this application has solved the problem in the background art to a certain extent, the sample shell surface of sample back glues viscose liquid in this application, the easy polluted environment, inconvenient removal simultaneously, especially need take the environment such as laboratory after the outside sampling when detecting under, exert pressure for the operation panel easily, cause the liquid of sample to leak, and during the rotatory operation panel, hold the sample shell, cause the sample shell position to remove easily, especially to the liquid of layering, can not fine control the position of sample liquid.
Disclosure of Invention
The invention aims to provide a sampling method of a liquid sampling device capable of being sealed annularly for chemical detection, which adopts a sampling protection cylinder and a telescopic protective cover to wrap a sampling cylinder body, can solve the problem of liquid dripping adhered on the surface of the sampling cylinder body after sampling, protects the environment and prevents pollution, in addition, the position of the sampling cylinder body is controlled by a first internal thread and a first external thread, the telescopic protective cover is controlled by rotating to realize the extension and extension of the sampling cylinder body in the sampling protection cylinder, the use is easy, a central connecting plate follows the moving position of the sampling cylinder body, the central connecting plate drives one end of a side supporting plate to move, the extension and extension of the side supporting plate is controlled by following the position of the sampling cylinder body, the position of the sampling protection cylinder is fixed by a side supporting plate, the sampling position is more accurate, and a screwing locking ferrule can adjust the tightness of a sealing ring piece sleeved with a piston rod, the annular sealing at the upper end of the sampling cylinder body is realized, and the lower end of the sampling short pipe is plugged by the sealing bulge, so that the sealing effect of the sampling cylinder body is further enhanced, and the problem provided in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme: a method of sampling a liquid sampling device that is annularly sealable for chemical testing, comprising the steps of:
s1: the telescopic protection cover is rotated to enable the telescopic protection cover to integrally move downwards to drive the sampling cylinder body to move downwards, the sampling cylinder body pushes the limiting support frame to integrally move downwards, meanwhile, the sampling short pipe jacks the plugging plate, and the sampling short pipe extends to the lower part of the cylinder bottom plate;
s2: rotating the locking ferrule, unscrewing the connection between the sealing ring piece and the piston rod, moving the piston rod, and exhausting air in the sampling cylinder body by the rubber piston through pushing the piston rod;
s3: at the moment, the lateral supporting plate extends out of the movable hole, the lateral supporting plate is placed at a fixed position on the support through a common circular support, the sampling short pipe is inserted into liquid to be sampled, then the piston rod is pulled, and the rubber piston generates negative pressure in the sampling cylinder body to suck the liquid into the sampling cylinder body;
s4: after sampling is finished, the locking ring is rotated reversely, the locking ring extrudes the sealing ring piece to be tightly attached to the piston rod, the upper end of the sampling protection cylinder is sealed in an annular mode, and meanwhile the fixed piston rod cannot move;
s5: the telescopic protective cover is rotated reversely, the telescopic protective cover drives the limiting support frame to move upwards integrally, most of the side support plate is retracted into the movable hole, the sampling short pipe is retracted into the sampling protective cylinder, the plugging plate plugs the central circular hole under the action of the control torsion spring, and the sealing bulge abuts against the lower end of the sampling short pipe to seal the sampling short pipe;
s6: in the transportation process, the partial lateral supporting plate of the exposed movable hole plays a supporting role in the sampling protection barrel which is transversely placed, and the sampling protection barrel can be prevented from rolling.
The method uses a liquid sampling device which can be annularly sealed and used for chemical detection, and comprises a sampling protection cylinder and a sampling cylinder body, wherein the sampling protection cylinder is sleeved with the sampling cylinder body, the lower end of the sampling protection cylinder is provided with a cylinder bottom plate, the center of the cylinder bottom plate is provided with a central circular hole, the cylinder bottom plate on one side below the central circular hole is connected with a plugging plate, the central circular hole is a circular truncated cone-shaped structure of which the diameter of an upper port is smaller than that of a lower port,
the plugging plate is a truncated cone-shaped plate body matched with the central round hole, one side of the plugging plate is connected with a connecting piece, the connecting piece is sleeved with a fixed rotary column, two ends of the fixed rotary column are fixedly connected with the cylinder bottom plate through a fixed block, a control torsion spring is sleeved on the fixed rotary column, one end of the control torsion spring is abutted against the plugging plate, the other end of the control torsion spring is abutted against the lower surface of the cylinder bottom plate, a sealing bulge is fixedly connected on the central position of the upper surface of the plugging plate and abutted against the lower end of the sampling short pipe,
the sampling protection cylinder is provided with a movable hole in equal distance on the side wall close to the lower end, a position limiting ring is connected in the movable hole in a penetrating way, a limiting support frame is connected in the movable hole in a penetrating way, a first external thread is arranged on the outer wall of the upper end of the sampling protection cylinder, a transparent observation window is connected on the sampling protection cylinder below the first external thread, a telescopic protection cover is fixedly connected on the outer wall of the upper end of the sampling cylinder body, a sealing circular plate is arranged inside the upper end of the sampling cylinder body, the center of the sealing circular plate is connected with a sealing ring piece, a second external thread is arranged outside the sealing ring piece, a locking ferrule is meshed on the second external thread, a piston rod penetrates through the sealing ring piece, the lower end of the piston rod is fixedly connected with a rubber piston, a limiting sliding groove is arranged on the outer wall of the sampling cylinder body close to the lower end, the limiting sliding groove is movably connected with the limiting support frame, and a sampling short pipe is fixedly connected with the lower end of the sampling cylinder body,
the limiting support frame comprises a center connecting plate and side supporting plates, and the side supporting plates are hinged on the side wall of the center connecting plate at equal distances.
Preferably, the inner wall of the telescopic protection cover is provided with a first internal thread, and the first internal thread is meshed with the first external thread.
Preferably, a clamping groove is formed between the upper surface of the sealing circular plate and the upper end of the sampling tube body.
Preferably, the upper end of the sealing ring piece is provided with tightness adjusting gaps at equal intervals, and the inner ring of the sealing ring piece is connected with a rubber sealing gasket.
Preferably, a second internal thread is formed on the inner wall of the locking ferrule and meshed with the second external thread, anti-slip threads are formed on the outer wall of the upper end of the locking ferrule, and the diameter of the inner wall of the upper end opening of the locking ferrule is smaller than that of the inner wall of the lower end opening.
Preferably, a sliding round hole is formed in the center of the central connecting plate, the sliding round hole is in sleeve connection with the sampling protection barrel, a limiting sliding ring is fixedly connected to the inner ring of the sliding round hole, and the limiting sliding ring is movably connected with the limiting sliding groove.
Preferably, a long limiting groove is formed in the side supporting plate, the side supporting plate penetrates through the movable hole, and the position limiting ring penetrates through the long limiting groove.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the sampling method of the annular sealing liquid sampling device for chemical detection, provided by the invention, the sampling protection cylinder is sleeved with the sampling cylinder body, the telescopic protective cover is fixedly connected to the outer wall of the upper end of the sampling cylinder body, and the sampling cylinder body is wrapped by the sampling protection cylinder and the telescopic protective cover, so that the problem that liquid adhered to the surface of the sampling cylinder body drops after sampling can be solved, the environment is protected, pollution is prevented, and meanwhile, the liquid sampled in the sampling cylinder body is not easily polluted by the outside.
2. According to the sampling method of the liquid sampling device capable of being sealed annularly for chemical detection, the position of the sampling cylinder body is controlled through the first internal thread and the first external thread, the telescopic protective cover is controlled in a rotating mode to achieve stretching-in and stretching-out of the sampling cylinder body in the sampling protective cylinder, the sampling cylinder body jacks the plugging plate, the plugging plate automatically achieves plugging under the effect of controlling the torsion spring, and the sampling method is easy to use.
3. According to the sampling method of the annularly sealed liquid sampling device for chemical detection, the central connecting plate follows the sampling cylinder body to move, the central connecting plate drives one end of the side supporting plate to move, the side supporting plate is controlled to extend in and extend out along with the position of the sampling cylinder body, the position of the sampling protection cylinder is fixed through the side supporting plate, the sampling cylinder body can be prevented from moving, and the sampling position is more accurate.
4. According to the sampling method of the annular sealing liquid sampling device for chemical detection, the tightness of the sleeve joint of the sealing ring piece and the piston rod can be adjusted by screwing the locking ferrule, so that the annular sealing at the upper end of the sampling cylinder body is realized, the lower end of the sampling short pipe is plugged by the sealing bulge, and the sealing effect of the sampling cylinder body is further enhanced.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a view showing the internal structure of the sampling protection cylinder according to the present invention;
FIG. 3 is a partial block diagram of the sampling protection cartridge of the present invention;
FIG. 4 is a schematic view of a sampling protection cartridge of the present invention;
FIG. 5 is a view showing the structure of a plugging plate according to the present invention;
FIG. 6 is another view angle structure diagram of the plugging plate of the present invention;
FIG. 7 is a diagram of the working state of the present invention;
FIG. 8 is a schematic view of the main body of the sampling tube of the present invention;
FIG. 9 is a view of the locking collar of the present invention;
fig. 10 is a structural view of the position-limiting support frame of the present invention.
In the figure: 1. a sampling protection cylinder; 11. a barrel floor; 111. a central circular hole; 12. a movable hole; 13. a position limiting ring; 14. a first external thread; 15. a transparent viewing window; 16. a plugging plate; 161. a connecting member; 162. fixing the rotary column; 163. a fixed block; 164. controlling the torsion spring; 165. sealing the protrusion; 2. a sampling tube body; 21. a telescopic protective cover; 211. a first internal thread; 22. sealing the circular plate; 221. a clamping groove; 23. a seal ring; 231. a second external thread; 232. tightly adjusting the gap; 24. a piston rod; 241. a rubber piston; 25. a limiting chute; 26. a short sampling pipe; 3. a limiting support frame; 31. a central connecting plate; 311. sliding the circular hole; 312. a limiting sliding ring; 32. a side support plate; 321. a long limit groove; 4. locking the ferrule; 41. a second internal thread; 42. and (4) anti-skid lines.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a sampling method of a liquid sampling device capable of being sealed annularly for chemical detection comprises a sampling protection cylinder 1 and a sampling cylinder body 2, the sampling protection cylinder 1 is sleeved with the sampling cylinder body 2, a cylinder bottom plate 11 is arranged at the lower end of the sampling protection cylinder 1, a central circular hole 111 is arranged at the center of the cylinder bottom plate 11, a plugging plate 16 is connected to the cylinder bottom plate 11 at one side below the central circular hole 111, the central circular hole 111 is a circular truncated cone-shaped structure with an upper port diameter smaller than a lower port diameter, a movable hole 12 is equidistantly arranged on the side wall of the sampling protection cylinder 1 near the lower end, a position limiting ring 13 is penetratingly connected in the movable hole 12, a limiting support frame 3 is penetratingly connected in the movable hole 12, a first external thread 14 is arranged on the outer wall of the upper end of the sampling protection cylinder 1, a transparent observation window 15 is connected on the sampling protection cylinder 1 below the first external thread 14, the plugging plate 16 is a truncated cone-shaped plate body matched with the central circular hole 111, under the action of the control torsion spring 164, the plugging plate 16 is clamped with the central circular hole 111, the effect of protecting the sampling tube body 2 can be achieved, the sticky liquid of the sampling tube body 2 is prevented from dripping and polluting the environment, one side of the plugging plate 16 is connected with a connecting piece 161, the plugging plate 16 rotates on a fixed rotary column 162 through the connecting piece 161 to achieve the opening and closing of the plugging plate 16, the connecting piece 161 is sleeved with the fixed rotary column 162, two ends of the fixed rotary column 162 are fixedly connected with the tube bottom plate 11 through a fixed block 163, the fixed rotary column 162 is sleeved with the control torsion spring 164, one end of the control torsion spring 164 abuts against the plugging plate 16, the other end of the control torsion spring 164 abuts against the lower surface of the tube bottom plate 11, the control torsion spring 164 controls the plugging plate 16 to be clamped with the central circular hole 111 under the condition that no external force exists, and a sealing bulge 165 is fixedly connected at the central position of the upper surface of the plugging plate 16, the sealing bulge 165 is abutted against the lower end of the sampling short pipe 26, the sealing bulge 165 is made of rubber materials, the diameter of the sealing bulge 165 is larger than that of the sampling short pipe 26, the lower end of the sampling short pipe 26 can be effectively plugged, and the lower end of the sampling short pipe 26 is sealed.
Referring to fig. 7-8, an outer wall of an upper end of the sampling tube body 2 is fixedly connected with a telescopic protection cover 21, an inner wall of the telescopic protection cover 21 is provided with a first internal thread 211, the first internal thread 211 is engaged with the first external thread 14, the position of the sampling tube body 2 is controlled by the first internal thread 211 and the first external thread 14, and the position of the telescopic protection cover 21 is controlled by rotation, so that the operation is simple, the inner part of the upper end of the sampling tube body 2 is provided with a sealing circular plate 22, a clamping groove 221 is arranged between an upper surface of the sealing circular plate 22 and the upper end of the sampling tube body 2, the clamping groove 221 is used for clamping with a lower end of a locking collar 4, so as to further improve the mounting firmness of the locking collar 4, the center of the sealing circular plate 22 is connected with a sealing ring member 23, the outer part of the sealing ring member 23 is provided with a second external thread 231, the locking collar 4 is engaged with the second external thread, the upper end of the sealing ring member 23 is provided with tightness adjusting gaps 232 at equal intervals, the inner ring of the sealing ring piece 23 is connected with a rubber sealing gasket, when the locking ring 4 is screwed with the sealing ring piece 23, the tightness adjusting gap 232 is reduced, the piston rod 24 penetrates through the sealing ring piece 23, the inner wall of the sealing ring piece 23 is tightly attached to the side wall of the piston rod 24, the position of the piston rod 24 is fixed, the piston rod 24 is prevented from moving, it is ensured that liquid in the sampling tube body 2 cannot spill out, the lower end of the piston rod 24 is fixedly connected with the rubber piston 241, the outer wall of the sampling tube body 2, which is close to the lower end, is provided with a limiting sliding groove 25, the limiting sliding groove 25 is movably connected with the limiting support frame 3, the lower end of the sampling tube body 2 is fixedly connected with a sampling short tube 26, and the sampling short tube 26 is used for sampling in the liquid.
Referring to fig. 9, the inner wall of the locking collar 4 is provided with a second internal thread 41, the second internal thread 41 is engaged with the second external thread 231, the outer wall of the upper end of the locking collar 4 is provided with an anti-slip thread 42, the diameter of the inner wall of the upper port of the locking collar 4 is smaller than that of the inner wall of the lower port, the tightness of the sleeve connection between the seal ring member 23 and the piston rod 24 can be adjusted by screwing the locking collar 4, and the anti-slip thread 42 assists in screwing the locking collar 4.
Referring to fig. 10, the position-limiting support frame 3 includes a central connection plate 31 and a side support plate 32, the side support plate 32 is hinged to the side wall of the central connection plate 31 at an equal distance, a sliding circular hole 311 is formed in the central position of the central connection plate 31, the sliding circular hole 311 is sleeved with the sampling protection barrel 1, a position-limiting sliding ring 312 is fixedly connected to the inner ring of the sliding circular hole 311, the position-limiting sliding ring 312 is movably connected to the position-limiting sliding groove 25, a long position-limiting groove 321 is formed in the side support plate 32, the side support plate 32 penetrates through the movable hole 12, the position-limiting ring 13 penetrates through the long position-limiting groove 321, the central connection plate 31 moves along with the sampling barrel body 2, the central connection plate 31 drives one end of the side support plate 32 to move, when the central connection plate 31 moves along with the sampling barrel body 2, the side support plate 32 retracts into the movable hole 12, when the central connection plate 31 moves downward, the side support plate 32 extends out of the movable hole 12, can fix the position of sampler barrel body 2 through lateral part backup pad 32, prevent when the sampling, drive sampler barrel body 2 and reciprocate the position, lead to sample nozzle stub 26 sampling offset, improve the degree of accuracy of sampling.
In order to better demonstrate the sampling process of the liquid sampling device capable of being annularly sealed for chemical detection, the present embodiment provides a sampling method of the liquid sampling device capable of being annularly sealed for chemical detection, including the following steps:
the method comprises the following steps: the telescopic protection cover 21 is rotated to enable the telescopic protection cover 21 to move downwards integrally, the telescopic protection cover 21 is fixedly connected with the sampling tube body 2 to drive the sampling tube body 2 to move downwards, the sampling tube body 2 pushes the limiting support frame 3 to move downwards integrally, meanwhile, the sampling short pipe 26 jacks the plugging plate 16, and the sampling short pipe 26 extends to the lower part of the tube bottom plate 11;
step two: the locking ferrule 4 is rotated, the connection between the sealing ring piece 23 and the piston rod 24 is unscrewed, the piston rod 24 can be moved, and the rubber piston 241 exhausts the air in the sampling cylinder body 2 by pushing the piston rod 24 to prepare for sampling;
step three: at this moment, the lateral support plate 32 extends out of the movable hole 12, the lateral support plate 32 can be placed at a fixed position on the support through a common circular support, the sampling short pipe 26 is inserted into the liquid to be sampled, the piston rod 24 is pulled, the position of the lateral support plate 32 can be pressed when the piston rod 24 is pulled, the sampling protection cylinder 1 is prevented from moving upwards integrally, the rubber piston 241 generates negative pressure in the sampling cylinder body 2, the liquid is sucked into the sampling cylinder body 2, and the sampling amount of the sampling cylinder body 2 can be seen through the transparent observation window 15;
step four: after sampling is finished, the locking ferrule 4 is rotated reversely, the locking ferrule 4 extrudes the sealing ring piece 23 to be tightly attached to the piston rod 24, annular sealing is carried out on the upper end of the sampling protection cylinder 1, the fixed piston rod 24 cannot move, sealing is formed on the upper end of the sampling cylinder body 2 under the extrusion of the sealing ring piece 23, and liquid cannot flow downwards in the sampling cylinder body 2 under the action of the rubber piston 241;
step five: the telescopic protective cover 21 is rotated reversely, the telescopic protective cover 21 drives the limit support frame 3 to move up integrally, most of the side support plate 32 is retracted into the movable hole 12, the sampling short pipe 26 is retracted into the sampling protective cylinder 1, the blocking plate 16 blocks the central circular hole 111 under the action of the control torsion spring 164, the sealing bulge 165 abuts against the lower end of the sampling short pipe 26, the sampling short pipe 26 is sealed, and the sample can be prevented from being polluted;
step six: in the transportation process, the exposed part of the side supporting plate 32 of the movable hole 12 plays a role in supporting the sampling protection cylinder 1 which is transversely placed, the sampling protection cylinder 1 can be prevented from rolling, the locking ring 4 extrudes the sealing ring piece 23 to be tightly attached to the piston rod 24, the upper end of the sampling protection cylinder 1 is sealed in an annular mode, meanwhile, the sealing bulge 165 abuts against the lower end of the sampling short pipe 26, the lower end of the sampling short pipe 26 is sealed, the telescopic protection cover 21 and the sampling protection cylinder 1 are clean in the outside, and the sampled liquid can be prevented from being polluted or polluting the environment.
In conclusion; the liquid sampling device and the method for chemical detection, which can be sealed annularly, adopt the sampling protection cylinder 1 and the telescopic protective cover 21 to wrap the sampling cylinder body 2, can solve the problem of liquid dripping adhered on the surface of the sampling cylinder body 2 after sampling, protect the environment and prevent pollution, in addition, the position of the sampling cylinder body 2 is controlled by the first internal thread 211 and the first external thread 14, the telescopic protective cover 21 is controlled by rotating to realize the extension and extension of the sampling cylinder body 2 in the sampling protection cylinder 1, the use is easy, the central connecting plate 31 follows the moving position of the sampling cylinder body 2, the central connecting plate 31 drives the moving position of one end of the lateral supporting plate 32, the extension and extension of the lateral supporting plate 32 is controlled by following the position of the sampling cylinder body 2, the position of the sampling protection cylinder 1 is fixed by the lateral supporting plate 32, the sampling position is more accurate, the tightness of the sleeve joint of the sealing ring piece 23 and the piston rod 24 can be adjusted by the locking and screwing the ferrule 4, the annular sealing at the upper end of the sampling cylinder body 2 is realized, and the lower end of the sampling short pipe 26 is plugged by the sealing bulge 165, so that the sealing effect of the sampling cylinder body 2 is further enhanced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A sampling method of an annularly sealable liquid sampling device for chemical detection is characterized by comprising the following steps:
s1: the telescopic protection cover (21) is rotated, so that the telescopic protection cover (21) integrally moves downwards to drive the sampling tube body (2) to move downwards, the sampling tube body (2) pushes the limiting support frame (3) to integrally move downwards, meanwhile, the sampling short pipe (26) jacks the plugging plate (16), and the sampling short pipe (26) extends to the lower part of the tube bottom plate (11);
s2: the locking ferrule (4) is rotated, the connection between the sealing ring piece (23) and the piston rod (24) is unscrewed, the piston rod (24) is moved, and the rubber piston (241) exhausts the air in the sampling tube body (2) by pushing the piston rod (24);
s3: at the moment, the side supporting plate (32) extends out of the movable hole (12), the side supporting plate (32) is placed at a fixed position on the support through a common circular support, the sampling short pipe (26) is inserted into liquid to be sampled, then the piston rod (24) is pulled, the rubber piston (241) generates negative pressure in the sampling cylinder body (2), and the liquid is sucked into the sampling cylinder body (2);
s4: after sampling is finished, the locking ferrule (4) is rotated reversely, the locking ferrule (4) extrudes the sealing ring piece (23) to be tightly attached to the piston rod (24), the upper end of the sampling protection cylinder (1) is sealed in an annular mode, and meanwhile the fixed piston rod (24) cannot move;
s5: then the telescopic protection cover (21) is rotated reversely, the telescopic protection cover (21) drives the limit support frame (3) to move up integrally, most of the side support plate (32) is retracted into the movable hole (12), the sampling short pipe (26) retracts into the sampling protection cylinder (1), the blocking plate (16) blocks the central round hole (111) under the action of the control torsion spring (164), and meanwhile, the sealing bulge (165) is abutted against the lower end of the sampling short pipe (26) to seal the sampling short pipe (26);
s6: in the transportation process, part of the side supporting plates (32) of the exposed movable holes (12) play a role in supporting the sampling protection cylinder (1) which is transversely placed, so that the sampling protection cylinder (1) can be prevented from rolling;
the method uses a liquid sampling device which can be sealed in an annular shape and used for chemical detection, and comprises a sampling protection cylinder (1) and a sampling cylinder body (2), wherein the sampling protection cylinder (1) is sleeved with the sampling cylinder body (2), the lower end of the sampling protection cylinder (1) is provided with a cylinder bottom plate (11), the center of the cylinder bottom plate (11) is provided with a central round hole (111), the cylinder bottom plate (11) at one side below the central round hole (111) is connected with a plugging plate (16), the central round hole (111) is in a round table-shaped structure of which the diameter of an upper port is smaller than that of a lower port,
the sealing plate (16) is a truncated cone-shaped plate body matched with the central round hole (111), one side of the sealing plate (16) is connected with a connecting piece (161), the connecting piece (161) is sleeved with a fixed rotating column (162), two ends of the fixed rotating column (162) are fixedly connected with the barrel bottom plate (11) through a fixed block (163), the fixed rotating column (162) is sleeved with a control torsion spring (164), one end of the control torsion spring (164) is abutted against the sealing plate (16), the other end of the control torsion spring (164) is abutted against the lower surface of the barrel bottom plate (11), a sealing bulge (165) is fixedly connected to the central position of the upper surface of the sealing plate (16), and the sealing bulge (165) is abutted against the lower end of the sampling short pipe (26),
the sampling protection barrel is characterized in that a movable hole (12) is equidistantly formed in the side wall, close to the lower end, of the sampling protection barrel (1), a position limiting ring (13) is connected in the movable hole (12) in a penetrating manner, a limiting support frame (3) is connected in the movable hole (12) in a penetrating manner, a first external thread (14) is formed in the outer wall of the upper end of the sampling protection barrel (1), a transparent observation window (15) is connected to the sampling protection barrel (1) below the first external thread (14), a telescopic protection cover (21) is fixedly connected to the outer wall of the upper end of the sampling barrel body (2), a sealing circular plate (22) is arranged in the upper end of the sampling barrel body (2), a sealing ring piece (23) is connected to the center of the sealing circular plate (22), a second external thread (231) is formed in the outer part of the sealing ring piece (23), a locking ring (4) is meshed with the second external thread (231), and a piston rod (24) is arranged in the sealing ring piece (23) in a penetrating manner, the lower end of the piston rod (24) is fixedly connected with a rubber piston (241), the outer wall of the sampling tube body (2) close to the lower end is provided with a limiting sliding chute (25), the limiting sliding chute (25) is movably connected with a limiting supporting frame (3), the lower end of the sampling tube body (2) is fixedly connected with a sampling short pipe (26),
the limiting support frame (3) comprises a central connecting plate (31) and side support plates (32), and the side support plates (32) are hinged on the side wall of the central connecting plate (31) at equal distances.
2. A sampling method of a liquid sampling device annularly sealable for chemical detection as claimed in claim 1, wherein: first internal threads (211) are formed in the inner wall of the telescopic protection cover (21), and the first internal threads (211) are meshed with the first external threads (14).
3. A sampling method of a liquid sampling device annularly sealable for chemical detection as claimed in claim 1, wherein: a clamping groove (221) is arranged between the upper surface of the sealing circular plate (22) and the upper end of the sampling tube body (2).
4. A sampling method of a liquid sampling device annularly sealable for chemical detection as claimed in claim 1, wherein: the upper end of the sealing ring piece (23) is equidistantly provided with a tightness adjusting notch (232), and the inner ring of the sealing ring piece (23) is connected with a rubber sealing gasket.
5. A sampling method of a liquid sampling device annularly sealable for chemical detection as claimed in claim 1, wherein: a second internal thread (41) is formed in the inner wall of the locking ferrule (4), the second internal thread (41) is meshed with a second external thread (231), anti-skidding threads (42) are formed in the outer wall of the upper end of the locking ferrule (4), and the diameter of the inner wall of the upper port of the locking ferrule (4) is smaller than that of the inner wall of the lower port.
6. A sampling method of a liquid sampling device annularly sealable for chemical detection as claimed in claim 1, wherein: the central position of the central connecting plate (31) is provided with a sliding round hole (311), the sliding round hole (311) is sleeved with the sampling protection barrel (1), the inner ring of the sliding round hole (311) is fixedly connected with a limiting sliding ring (312), and the limiting sliding ring (312) is movably connected with a limiting sliding groove (25).
7. A method of sampling an annularly sealable liquid sampling device for chemical assays as recited in claim 6, further comprising: a long limiting groove (321) is formed in the side supporting plate (32), the side supporting plate (32) penetrates through the movable hole (12), and the position limiting ring (13) penetrates through the long limiting groove (321).
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| CN113029659B (en) * | 2021-03-29 | 2022-11-25 | 田�健 | Geological exploration soil sampler |
| CN113402058B (en) * | 2021-06-21 | 2022-11-08 | 扬州市洁源排水有限公司 | Purifier is used in municipal sewage treatment convenient to sample |
| CN114184520B (en) * | 2022-02-16 | 2022-05-20 | 潍坊尚捷水泥有限公司 | Thermal insulation mortar consistency detection system and use method thereof |
| CN116202817A (en) * | 2022-11-23 | 2023-06-02 | 安徽沙丰新材料有限公司 | Water-based calcium stearate dispersion liquid sampling device for rubber |
| CN117269385B (en) * | 2023-09-27 | 2024-05-14 | 济南铭域医学检验实验室有限公司 | Sample injection plate of liquid chromatograph tandem mass spectrometer |
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| CN210863260U (en) * | 2019-10-15 | 2020-06-26 | 中国石油化工股份有限公司 | Closed sampling and returning device for flowing medium |
| CN211452984U (en) * | 2019-07-31 | 2020-09-08 | 哈尔滨师范大学 | Liquid sampling device for chemical detection |
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| CN207408148U (en) * | 2017-10-23 | 2018-05-25 | 温州卡耐夫电器有限公司 | For water-bed hermetic type stratified sampler |
| CN109738234B (en) * | 2019-02-18 | 2021-08-10 | 宋其兰 | Vomitus sampling device is used in gastroenterology nursing |
| CN210465030U (en) * | 2019-08-02 | 2020-05-05 | 荣成市妇幼保健院 | Sampling device for pharmaceutical analysis |
| CN210893782U (en) * | 2019-08-06 | 2020-06-30 | 王岐振 | Sampler for geological engineering oil field research |
| CN210487349U (en) * | 2019-09-09 | 2020-05-08 | 青岛三福有机复合肥料有限公司 | Sampling detector for organic compound fertilizer |
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| CN211452984U (en) * | 2019-07-31 | 2020-09-08 | 哈尔滨师范大学 | Liquid sampling device for chemical detection |
| CN210863260U (en) * | 2019-10-15 | 2020-06-26 | 中国石油化工股份有限公司 | Closed sampling and returning device for flowing medium |
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