Multi-layer isolation closed sampling device

Abstract

The utility model provides a multilayer isolation closed sampling device, which relates to the technical field of sampling and comprises a sampling barrel, a sampling tube is mounted at the lower end of the sampling barrel in a penetrating manner, a pull rod is movably mounted at the upper end in the sampling barrel in a penetrating manner, and a piston is mounted at one end, positioned in the sampling barrel, of the pull rod. A user inserts the liquid taking pipe into a sample and then pulls the piston, so that the first isolation block is opened through negative pressure, the sample enters the sampling pipe, and after sampling is completed, the user pushes the piston downwards to enable the sample to enter the sampling bottle along the liquid guide hole and the connecting pipe to be recycled. The sample is prevented from making contact with the outside again, so that the purity of the sample is further guaranteed, meanwhile, a user does not need to make direct contact with the sample in the sampling process of the sample, the risks of cross infection and sample pollution are greatly reduced, and the health of operators is effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling technology field, specifically, relate to a multilayer isolated closed sampling device. BACKGROUND

[0002] In the sample collection field, it is crucial to ensure the purity, accuracy of the sample and the safety of the operator. However, the traditional sampling method often has many challenges. On the one hand, the sample is easily contaminated by the external environment during the collection process, such as air, dust, microorganisms, etc. These contaminants may seriously affect the subsequent analysis and research results of the sample. On the other hand, the operator may face health risks when directly contacting the sample, especially for toxic, harmful or corrosive samples, the risk is more significant. Therefore, we propose a multilayer isolated closed sampling device to solve the above problems. SUMMARY

[0003] The main purpose of the utility model is to provide a multilayer isolated closed sampling device, which solves the problem that the traditional sampling method often has many challenges. On the one hand, the sample is easily contaminated by the external environment during the collection process, such as air, dust, microorganisms, etc. These contaminants may seriously affect the subsequent analysis and research results of the sample. On the other hand, the operator may face health risks when directly contacting the sample, especially for toxic, harmful or corrosive samples, the risk is more significant.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0005] A multilayer isolated closed sampling device, comprising a sampling cylinder, a sampling tube is installed through the lower end of the sampling cylinder, a pull rod is movably installed through the upper end of the inside of the sampling cylinder, a piston is installed at one end of the pull rod inside the sampling cylinder, and the piston is snap-fitted in the inside of the sampling cylinder, a temporary storage box is fixedly installed at the lower end of one side of the sampling cylinder, an isolation mechanism is installed between the temporary storage box and the sampling cylinder, and a sampling bottle is installed between the temporary storage box and the isolation mechanism.

[0006] As a preferred, the isolation mechanism comprises a snap groove, the snap groove is arranged at the lower end of the inside of the sampling cylinder, and the snap groove is connected through the sampling tube, a first isolation block is snap-fitted between the snap groove and the sampling tube, a first extension rod is installed at the lower end of the first isolation block, a first support frame is installed at the upper end of the inside of the sampling tube, the rod body of the first extension rod is movably installed in the inside of the first support frame, a first spring is sleeved and installed at the lower end of the rod body of the first extension rod, and the first spring is attached to the first support frame.

[0007] As preferred, the upper end of the inside of the temporary storage box is provided with a connecting groove, the upper end of the sampling bottle is fittedly installed in the inside of the connecting groove, the upper end of the inside of the connecting groove is installed with a connecting pipe, and the lower end of the connecting pipe is fittedly installed in the upper end of the inside of the sampling bottle.

[0008] As preferred, the upper end of the inside of the connecting pipe and the lower end of the inside of the sampling cylinder are provided with liquid guiding holes, the upper surface of the inside of the connecting groove is installed with a sealing ring, the sealing ring is attached to the sampling bottle, the lower end of the inside of the temporary storage box is installed with a threaded rod through screwing, the upper end of the threaded rod is installed with a tray, and the tray is attached to the sampling bottle.

[0009] As preferred, the upper surface of the inside of the connecting pipe is installed with a connecting frame at one end, the inside of the connecting frame is fixedly installed with a fixed rod, the upper surface of the inside of the connecting pipe is attached with an attaching plate, one end of the attaching plate is movably installed in the inside of the connecting frame, the rod body of the fixed rod is movably installed in the inside of the attaching plate respectively, a torsional spring is arranged between the attaching plate and the fixed rod, and the lower surface of the connecting pipe is provided with a plurality of discharging grooves.

[0010] As preferred, the upper end of the inside of the sampling bottle is provided with a recess, the upper end of the inside of the recess is fittedly installed with a second isolation block, the upper surface of the second isolation block is attached to the lower end of the connecting pipe, the upper end of the inside of the sampling bottle is installed with a second supporting frame, the lower end of the second isolation block is installed with a second extending rod, the rod body of the second extending rod is movably installed in the inside of the second supporting frame, a second spring is sleevedly installed on the rod body of the second extending rod, and the lower end of the second spring is attached to the second supporting frame.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] (1) In the utility model, the user inserts the liquid taking pipe into the inside of the sample, then pulls the piston, opens the first isolation block through negative pressure, lets the sample enter the inside of the sampling pipe, then pushes the piston downward after sampling to let the sample enter the inside of the sampling bottle along the liquid guiding hole and the connecting pipe for recycling, avoids the sample from contacting the outside world again, further guarantees the purity of the sample, and the user does not need to directly contact the sample during sampling, which not only greatly reduces the risk of cross infection and sample pollution, but also effectively protects the health of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model of a multilayer isolation closed sampling device.

[0014] Figure 2 It is a front view structure schematic view of the utility model of a multilayer isolation closed sampling device.

[0015] Figure 3 This is a side view of the multi-layer isolation and sealed sampling device of this utility model;

[0016] Figure 4 This utility model relates to a multi-layer isolated and sealed sampling device. Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0017] Figure 5 This utility model relates to a multi-layer isolated and sealed sampling device. Figure 4 Enlarged structural diagram at point B;

[0018] Figure 6 This utility model relates to a multi-layer isolated and sealed sampling device. Figure 4 Enlarged structural diagram at point C.

[0019] In the diagram: 1. Sampling cylinder; 2. Sampling tube; 3. Pull-out rod; 4. Temporary storage box; 5. Sampling bottle; 6. Isolation mechanism; 601. Engaging groove; 602. First isolation block; 603. First extension rod; 604. First support frame; 605. First spring; 606. Liquid guide hole; 607. Connecting pipe; 608. Adhesive plate; 609. Connecting frame; 610. Fixing rod; 611. Connecting groove; 612. Sealing ring; 613. Groove; 614. Discharge chute; 615. Second isolation block; 616. Second support frame; 617. Second extension rod; 618. Second spring; 619. Threaded rod; 620. Tray; 7. Piston. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 6 As shown in the figure, this utility model embodiment proposes a multi-layer isolation and sealed sampling device, including a sampling cylinder 1, a sampling tube 2 is installed through the lower end of the sampling cylinder 1, a pull rod 3 is movably installed through the upper end of the sampling cylinder 1, a piston 7 is installed at one end of the pull rod 3 inside the sampling cylinder 1, and the piston 7 is engaged inside the sampling cylinder 1, a temporary storage box 4 is fixedly installed at the lower end of one side of the sampling cylinder 1, an isolation mechanism 6 is installed between the temporary storage box 4 and the sampling cylinder 1, and a sampling bottle 5 is installed between the temporary storage box 4 and the isolation mechanism 6.

[0022] like Figures 4 to 6As shown, another embodiment of the utility model, the isolation mechanism 6 includes the clamping groove 601, the clamping groove 601 is located the inside lower end of sampling cylinder 1, and the clamping groove 601 is connected through between sampling tube 2, the first isolation block 602 is installed between the clamping groove 601 and sampling tube 2, the lower end of first isolation block 602 is installed with first extension rod 603, the inside upper end of sampling tube 2 is installed with first support frame 604, the rod body of first extension rod 603 is respectively installed in the inside of first support frame 604 and is movable, the rod body lower end of first extension rod 603 is installed with first spring 605, and first spring 605 is in close contact with first support frame 604, the inside upper end of temporary storage box 4 is equipped with connecting groove 611, the upper end of sampling bottle 5 is installed in the inside of connecting groove 611, connecting tube 607 is installed in the inside upper end of connecting groove 611, the lower end of connecting tube 607 is installed in the inside upper end of sampling bottle 5, the inside upper end of connecting tube 607 and the inside lower end of sampling cylinder 1 are equipped with liquid guide hole 606, the inside upper surface of connecting groove 611 is installed with sealing ring 612, and sealing ring 612 is in close contact with sampling bottle 5, the inside lower end of temporary storage box 4 is installed with threaded rod 619 through screw thread, the upper end of threaded rod 619 is installed with tray 620, and tray 620 is in close contact with sampling bottle 5, one end of the inside upper surface of connecting tube 607 is installed with connecting frame 609, fixed rod 610 is fixedly installed in the inside of connecting frame 609, and the inside upper surface of connecting tube 607 is installed with close plate 608, and one end of close plate 608 is movably installed in the inside of connecting frame 609, the rod body of fixed rod 610 is movably installed in the inside of close plate 608, and torsional spring is arranged between close plate 608 and fixed rod 610, the lower surface of connecting tube 607 is equipped with several discharge grooves 614, the inside upper end of sampling bottle 5 is equipped with recess 613, the inside upper end of recess 613 is installed with second isolation block 615, the upper surface of second isolation block 615 and the lower end of connecting tube 607 are in close contact, the inside upper end of sampling bottle 5 is installed with second support frame 616, the lower end of second isolation block 615 is installed with second extension rod 617, the rod body of second extension rod 617 is movably installed in the inside of second support frame 616, second spring 618 is installed on the rod body upper end of second extension rod 617, and the lower end of second spring 618 is in close contact with second support frame 616.

[0023] The user first places the sampling bottle 5 on the surface of the tray 620, and then the user can control the threaded rod 619 to rotate, so that the threaded rod 619 pushes the tray 620 and the sampling bottle (5) upward by threads, so that the upper end of the sampling bottle 5 is first clamped into the inside of the connecting groove 611, and then as the sampling bottle 5 continues to move, the lower end of the connecting pipe 607 and the second isolation block 615 are in close contact, so that when the sampling bottle 5 continues to move upward, the connecting pipe 607 pushes the second isolation block 615 to extrude the second spring 618, so that the second isolation block 615 and the upper end of the recess 613 are separated, and then the sealing ring 612 is used to further seal between the sampling bottle 5 and the connecting groove 611, and then after the sampling bottle 5 is installed, the user can insert the sampling tube 2 into the inside of the raw material to be sampled, and then after the sampling tube 2 is inserted, the user can pull the piston 7 upward by the pull rod 3 to generate negative pressure between the lower end of the piston 7 and the sampling cylinder 1, and then the external raw material can push the first isolation block 602 upward by positive pressure, so that the first isolation block 602 drives the first extension rod 603 to extrude the first spring 605, and at the same time, the first isolation block 602 is separated from the inside of the clamping groove 601, so that the sample can enter the inside of the sampling cylinder 1 to realize sampling and isolation, and then after the sample is sampled, the user can push the piston 7 by the pull rod 3 to extrude the sample, so that the sample flows along the liquid guide hole 606 to push the abutting plate 608, thereby realizing the connection between the liquid guide hole 606 and the connecting pipe 607, and then the sample can enter the inside of the connecting pipe 607, and then the sample in the connecting pipe 607 can enter the inside of the sampling bottle 5 through the discharge groove 614 to realize sampling and isolation, and finally after the sample is sampled, the torsional spring pushes the abutting plate 608 to reset, and at the same time, the user rotates the threaded rod 619 in the opposite direction to make the threaded rod 619 drive the tray 620 and the sampling bottle 5 to move downward, and then as the sampling bottle 5 moves, the second spring 618 pushes the second isolation block 615 to reset to seal the upper end of the sampling bottle 5, so as to avoid the impurities in the outside from entering the inside of the sampling bottle 5 to cause pollution, which can improve the purity of the sample and better protect the user.

[0024] The working principle of the multi-layer isolation and sealing sampling device is as follows:

[0025] In use, first, the user places the sampling bottle 5 on the surface of the tray 620, and then the user controls the threaded rod 619 to rotate, so that the threaded rod 619 pushes the tray 620 and the sampling bottle (5) upward by threads, so that the upper end of the sampling bottle 5 is clamped into the inside of the connecting groove 611, and then the lower end of the connecting pipe 607 is in contact with the second isolation block 615, so that when the sampling bottle 5 continues to move upward, the connecting pipe 607 pushes the second isolation block 615 to extrude the second spring 618, so that the second isolation block 615 is separated from the inside upper end of the groove 613, and then the sealing ring 612 further seals between the sampling bottle 5 and the connecting groove 611, and then after the sampling bottle 5 is installed, the user can insert the sampling tube 2 into the inside of the raw material to be sampled, and then after the sampling tube 2 is inserted, the user can pull the piston 7 upward by the pull rod 3 to generate negative pressure between the lower end of the piston 7 and the sampling cylinder 1, so that the outside raw material pushes the first isolation block 602 upward by positive pressure, so that the first isolation block 602 drives the first extension rod 603 to extrude the first spring 605, and at the same time, the first isolation block 602 is separated from the inside of the clamping groove 601, so that the sample can enter the inside of the sampling cylinder 1 to realize sampling and isolation, and then after the sample is sampled, the user can push the piston 7 by the pull rod 3 to extrude the sample, so that the sample flows along the liquid guide hole 606 to push the abutting plate 608, so as to realize the connection between the liquid guide hole 606 and the connecting pipe 607, and then the sample can enter the inside of the connecting pipe 607, and then the sample in the connecting pipe 607 can enter the inside of the sampling bottle 5 through the discharge groove 614 to realize sampling and isolation, and finally after the sample is sampled, the torsional spring pushes the abutting plate 608 to reset, and at the same time, the user rotates the threaded rod 619 in the opposite direction to drive the tray 620 and the sampling bottle 5 to move downward, and then the second spring 618 pushes the second isolation block 615 to reset to seal the upper end of the sampling bottle 5, so as to avoid the impurities in the outside from entering the inside of the sampling bottle 5 to cause pollution, so as to improve the purity of the sample, and better protect the user.

[0026] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here, and any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A multi-layered isolation and containment sampling device comprising a sampling cartridge (1), characterised in that: The lower end of the sampling cylinder (1) is provided with a sampling tube (2), the upper end of the inside of the sampling cylinder (1) is movably provided with a pull rod (3), one end of the pull rod (3) is provided with a piston (7) inside the sampling cylinder (1), the piston (7) is clamped and installed in the inside of the sampling cylinder (1), the lower end of one side of the sampling cylinder (1) is fixedly provided with a temporary storage box (4), the temporary storage box (4) and the sampling cylinder (1) are provided with an isolation mechanism (6), and the temporary storage box (4) and the isolation mechanism (6) are provided with a sampling bottle (5).

2. The multi-layered isolation and closed sampling device of claim 1, wherein: The isolation mechanism (6) comprises a clamping groove (601), which is arranged at the lower end of the inside of the sampling cylinder (1) and is connected through the clamping groove (601) and the sampling tube (2), the first isolation block (602) is clamped and installed between the clamping groove (601) and the sampling tube (2), the lower end of the first isolation block (602) is provided with a first extension rod (603), the upper end of the inside of the sampling tube (2) is provided with a first support frame (604), the rod body of the first extension rod (603) is movably installed in the inside of the first support frame (604) respectively, the rod body of the first extension rod (603) is provided with a first spring (605) at the lower end, and the first spring (605) is attached to the first support frame (604).

3. The multi-layered isolation and containment sampling device of claim 2, wherein: The inside of the temporary storage box (4) is provided with a connecting groove (611), the upper end of the sampling bottle (5) is clamped and installed in the inside of the connecting groove (611), the inside of the connecting groove (611) is provided with a connecting pipe (607), and the lower end of the connecting pipe (607) is clamped and installed in the upper end of the inside of the sampling bottle (5).

4. The multi-layered isolation and containment sampling device of claim 3, wherein: The upper end of the inside of the connecting pipe (607) and the lower end of the inside of the sampling cylinder (1) are provided with a liquid guide hole (606), the upper surface of the inside of the connecting groove (611) is provided with a sealing ring (612), the sealing ring (612) is attached to the sampling bottle (5), the lower end of the inside of the temporary storage box (4) is provided with a threaded rod (619) through screw thread, the upper end of the threaded rod (619) is provided with a tray (620), and the tray (620) is attached to the sampling bottle (5).

5. The multi-layered isolation and containment sampling device of claim 3, wherein: The upper surface of the inside of the connecting pipe (607) is provided with a connecting frame (609), the inside of the connecting frame (609) is fixedly provided with a fixed rod (610), the upper surface of the inside of the connecting pipe (607) is attached to a clamping plate (608), one end of the clamping plate (608) is movably installed in the inside of the connecting frame (609), the rod body of the fixed rod (610) is movably installed in the inside of the clamping plate (608) respectively, and the clamping plate (608) and the fixed rod (610) are provided with a torsion spring, and the lower surface of the connecting pipe (607) is provided with a plurality of discharge grooves (614).

6. The multi-layered isolation and containment sampling device of claim 3, wherein: The internal upper end of the sampling bottle (5) is provided with a recess (613), the internal upper end of the recess (613) is clamped and installed with a second isolation block (615), the upper surface of the second isolation block (615) is attached to the lower end of the connecting pipe (607), the internal upper end of the sampling bottle (5) is installed with a second support frame (616), the lower end of the second isolation block (615) is installed with a second extension rod (617), the rod body of the second extension rod (617) is movably penetrated and installed in the interior of the second support frame (616), the rod body of the second extension rod (617) is installed with a second spring (618) on the upper end, and the lower end of the second spring (618) is attached to the second support frame (616).

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