Anti-breaking plastic double-layer test tube with strong barrier property

Abstract

The utility model discloses an anti-breaking plastic double-layer test tube with strong barrier property, belongs to the technical field of plastic test tubes, and aims to solve the problem that the inner layer and the outer layer of the conventional test tube are made of the same PET (Polyethylene Terephthalate) material and cannot fully meet the requirements of strong barrier property of the inner layer and impact resistance of the outer layer. The inner layer made of polyethylene glycol terephthalate and the outer layer made of polycarbonate are arranged, so that the inner layer provides excellent gas and liquid barrier, an internal sample is protected from being influenced by the external environment, the stability of the sample is kept, and meanwhile, the outer layer has excellent impact resistance, so that the stability of the sample is improved. The test tube can be effectively prevented from being broken during falling or collision, and the durability of the test tube is improved; by arranging the tube plug connected with the elastic pull rope, the tube plug is ensured to be tightly attached, the sealing performance of the test tube is improved, a sample is prevented from leaking or volatilizing, meanwhile, the risk that the tube plug is lost is reduced, and the sample is prevented from being accidentally exposed in the experiment process.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic test tubes, and in particular relates to a plastic double-layer test tube with strong anti-breakage barrier properties. Background Art

[0002] With the increasing maturity of medical development, all examinations require sampling to be sent to the laboratory for testing, and test tubes are needed for sampling. When conducting testing, medical staff use test tubes to collect samples and place the test tubes on test tube racks for temporary storage. Test tubes can effectively protect samples, prevent external contamination and chemical reactions, and ensure the integrity and accuracy of the samples.

[0003] In the prior art, patent publication number CN219984734U discloses a double-layer PET plastic test tube with strong anti-shattering barrier properties. The patent includes an inner test tube, an outer test tube, a threaded groove, and a connecting ring. The outer test tube is sleeved on the outside of the inner test tube, the threaded groove is provided on the outer test tube, and the connecting ring is disposed inside the threaded groove. The connecting ring can be used to quickly and stably connect the inner and outer test tubes, making it difficult for the inner test tube to separate from the outer test tube. While effectively protecting the inner test tube, it prevents the outer test tube from separating from the inner test tube, making the double-layer test tube more convenient to handle. However, in actual use, the following deficiencies still exist: from a practical point of view, the inner and outer layers of the device are made of the same ordinary PET material, which cannot fully meet the requirements of the inner layer for barrier and the outer layer for impact resistance, thereby reducing the reliability of the test tube. At the same time, the existing test tube rack is directly placed on the desktop and lacks a positioning mechanism. The test tube rack is easily tilted by external force, increasing the risk of test tube rupture and leakage.

[0004] Therefore, a plastic double-layer test tube with strong anti-shattering barrier properties is needed to solve the problem in the existing technology that the inner and outer layers are made of the same PET material and cannot fully meet the strong barrier properties of the inner layer and the impact resistance of the outer layer. Utility Model Content

[0005] The purpose of the utility model is to provide a plastic double-layer test tube with strong anti-breakage barrier properties to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic double-layer test tube with strong anti-breakage barrier properties, comprising a double-layer test tube body and a mounting seat, grooves are provided on both sides of the mounting seat near the bottom, and positioning mechanisms are provided inside the two grooves. A support shaft is rotatably connected to the center position of the top of the mounting seat, and the outer wall of the support shaft is fixedly connected to a chassis near the bottom, and the outer wall of the support shaft is fixedly connected to a partition near the top. A plurality of placement grooves are provided on the top of the chassis, and a plurality of clamping grooves are provided through the inside of the partition. A fixing ring is fixedly connected to the outer wall of the double-layer test tube body near the top, a pull rope is fixedly connected to the top of the fixing ring, and a pipe plug is fixedly connected to the top of the pull rope.

[0007] It should be noted that the inner layer of the double-layer test tube body is made of polyethylene terephthalate, and the outer layer of the double-layer test tube body is made of polycarbonate.

[0008] It is further worth mentioning that a shock-absorbing pad is fixedly connected to the bottom of the mounting base.

[0009] It should be further explained that the positioning mechanism includes a support plate fixedly connected to the inner wall of the groove, a threaded rod is rotatably connected inside the support plate, a turntable is fixedly connected to the top of the threaded rod, a rotating seat is rotatably installed on the bottom of the threaded rod, a stabilizing suction cup is fixedly connected to the bottom of the stabilizing suction cup, and two guide columns are fixedly connected to the top of the stabilizing suction cup.

[0010] As a preferred embodiment, a thread groove corresponding to the threaded rod and two through holes corresponding to the guide posts are opened inside the support plate.

[0011] As a preferred embodiment, the inner walls of the plurality of placement grooves and the inner walls of the plurality of clamping grooves are fixedly connected with sponge rings.

[0012] As a preferred embodiment, the plurality of placement grooves and the plurality of clamping grooves are distributed symmetrically around the circumference.

[0013] As a preferred embodiment, the drawstring is made of thermoplastic elastomer.

[0014] As a preferred embodiment, the outer wall of the tube plug is tightly fitted with the inner wall of the double-layer test tube body, and a sealing ring is fixedly connected to the outer wall of the tube plug.

[0015] Compared with the prior art, the utility model provides a plastic double-layer test tube with strong anti-breakage barrier properties, which has at least the following beneficial effects:

[0016] (1) By providing an inner layer made of polyethylene terephthalate and an outer layer made of polycarbonate, the inner layer provides excellent gas and liquid barrier, protects the internal sample from the influence of the external environment, and maintains the stability of the sample. At the same time, the outer layer has excellent impact resistance, which can effectively prevent the test tube from breaking when it falls or collides, thereby increasing the durability of the test tube. By providing a tube plug connected by an elastic drawstring, the tube plug is ensured to fit tightly, thereby improving the sealing of the test tube, preventing sample leakage or volatilization, and reducing the risk of tube plug loss, thereby avoiding accidental exposure of the sample during the experiment.

[0017] (2) By setting a positioning mechanism, the turntable drives the threaded rod to rotate, so that the threaded rod drives the stabilizing suction cup to descend while rotating. The stabilizing suction cup descends and contacts and adsorbs on the table, so that the test tube rack is firmly positioned on the work table, ensuring that the test tube rack is not easy to slide during operation, reducing the risk of accidental tipping or collision; by setting a support shaft, the chassis and partition can be driven to rotate, and the revolution design allows each test tube to rotate within the reach, so that the user can easily pick up any test tube, reducing the trouble of bending over or stretching out the hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from a second perspective;

[0020] Figure 3 This is the first partial exploded view of the present utility model;

[0021] Figure 4 This is the second partial exploded view of the present invention;

[0022] Figure 5 It is a structural diagram of the positioning mechanism of the utility model.

[0023] In the figure: 1. Double-layer test tube body; 2. Mounting seat; 3. Groove; 4. Positioning mechanism; 401. Support plate; 402. Threaded rod; 403. Turntable; 404. Rotating seat; 405. Stabilizing suction cup; 406. Guide column; 5. Support shaft; 6. Chassis; 7. Partition; 8. Placement groove; 9. Clamping groove; 10. Fixing ring; 11. Pull rope; 12. Tube plug. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments.

[0025] See also Figure 1-5The utility model provides a plastic double-layer test tube with strong anti-breakage barrier properties, including a double-layer test tube body 1 and a mounting base 2. Grooves 3 are provided on both sides of the mounting base 2 near the bottom. Positioning mechanisms 4 are provided inside the two grooves 3. A support shaft 5 is rotatably connected to the center position of the top of the mounting base 2. The outer wall of the support shaft 5 is fixedly connected to a chassis 6 near the bottom. The outer wall of the support shaft 5 is fixedly connected to a partition 7 near the top. A plurality of placement grooves 8 are provided on the top of the chassis 6. A plurality of clamping grooves 9 are provided through the inside of the partition 7. A fixing ring 10 is fixedly connected to the outer wall of the double-layer test tube body 1 near the top. A pull rope 11 is fixedly connected to the top of the fixing ring 10, and a pipe plug 12 is fixedly connected to the top of the pull rope 11.

[0026] Further as Figure 1 、 Figure 2 and Figure 4 As shown, it is worth mentioning that the inner layer of the double-layer test tube body 1 is made of polyethylene terephthalate material, so that the inner layer provides excellent gas and liquid barrier, protects the internal sample from the influence of the external environment, and maintains the stability of the sample; the outer layer of the double-layer test tube body 1 is made of polycarbonate material, which has excellent impact resistance, can effectively prevent the test tube from breaking when falling or colliding, and increase the durability of the test tube.

[0027] Further as Figure 1 、 Figure 2 and Figure 4 As shown, it is worth mentioning that the pull rope 11 is made of thermoplastic elastomer material, which has excellent elasticity and flexibility, can withstand multiple stretching and bending without breaking, and enhances the service life.

[0028] Further as Figure 1 、 Figure 2 and Figure 4 As shown, it is worth mentioning that the outer wall of the tube plug 12 fits tightly with the inner wall of the double-layer test tube body 1, and a sealing ring is fixedly connected to the outer wall of the tube plug 12. The tightly fitting tube plug 12 and the sealing ring can effectively prevent the leakage of liquid or gas, thereby improving the safety of the experiment. The good sealing performance makes the test tube suitable for a variety of experimental conditions, including high-pressure and low-pressure environments. The design of the sealing ring ensures the stability of the internal environment of the test tube and effectively prevents the volatilization and contamination of the sample.

[0029] According to the above working process, it can be seen that: by setting an inner layer made of polyethylene terephthalate material and an outer layer made of polycarbonate material, the inner layer provides excellent gas and liquid barrier, protects the internal sample from the influence of the external environment, and maintains the stability of the sample. At the same time, the outer layer has excellent impact resistance, which can effectively prevent the test tube from breaking when it falls or collides, thereby increasing the durability of the test tube; by setting a tube plug 12 connected by an elastic pull rope 11, it is ensured that the tube plug 12 fits tightly, thereby improving the sealing of the test tube, preventing sample leakage or volatilization, and reducing the risk of losing the tube plug 12, thereby avoiding accidental exposure of the sample during the experiment.

[0030] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that a shock-absorbing pad is fixedly connected to the bottom of the mounting base 2. The shock-absorbing pad can effectively absorb vibration, reduce the impact of external impact on the test tube, and reduce the risk of breakage. At the same time, the shock-absorbing pad can protect the laboratory table and reduce scratches or damage caused by direct contact.

[0031] Further as Figure 5 As shown, it is worth mentioning that the positioning mechanism 4 includes a support plate 401 fixedly connected to the inner wall of the groove 3, and a threaded rod 402 is rotatably connected inside the support plate 401, and a turntable 403 is fixedly connected to the top of the threaded rod 402, and a rotating seat 404 is rotatably installed at the bottom of the threaded rod 402, and a stabilizing suction cup 405 is fixedly connected to the bottom of the rotating seat 404, and two guide columns 406 are fixedly connected to the top of the stabilizing suction cup 405. By setting the positioning mechanism 4, rotating the turntable 403 drives the threaded rod 402 to rotate, so that the threaded rod 402 drives the stabilizing suction cup 405 to descend while rotating, and the stabilizing suction cup 405 descends and contacts and adsorbs on the table, so that the test tube rack is firmly positioned on the work table, ensuring that the test tube rack is not easy to slide during operation, reducing the risk of accidental tipping or collision.

[0032] Further as Figure 5 As shown, it is worth mentioning that a threaded groove corresponding to the threaded rod 402 and two through holes corresponding to the guide column 406 are provided inside the support plate 401. The threaded groove cooperates with the threaded rod 402 to ensure that the threaded rod 402 can be lifted and lowered while rotating, thereby providing driving force for the lifting and lowering of the stable suction cup 405. The through holes cooperate with the guide column 406 to limit the movement of the guide column 406, thereby making the lifting and lowering of the stable suction cup 405 more stable.

[0033] Further as Figure 1 、 Figure 2 and Figure 3As shown, it is worth mentioning that the inner walls of multiple placement grooves 8 and the inner walls of multiple clamping grooves 9 are fixedly connected with sponge rings. The sponge rings can effectively buffer external impacts and prevent the test tubes from being damaged during the placement or clamping process. At the same time, the sponge rings increase the friction to ensure that the test tubes are stable when placed and are not easy to slide or tip over. The sponge material can adapt to test tubes of different sizes, provide good clamping and support, and is suitable for a variety of specifications.

[0034] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that the multiple placement slots 8 and the multiple clamping slots 9 are all circumferentially symmetrically distributed. The circumferentially symmetrical distribution makes it easier to place and remove the test tubes, thereby improving the convenience of use.

[0035] This solution has the following working process: in actual use, the mounting base 2 is placed on the work surface, and the turntable 403 is rotated to drive the threaded rod 402 to rotate, so that the threaded rod 402 drives the stabilizing suction cup 405 to descend while rotating. The stabilizing suction cup 405 descends and contacts and adsorbs on the work surface, so that the test tube rack is firmly positioned on the work surface, and then the double-layer test tube body 1 is passed through the clamping groove 9 and placed inside the placement groove 8, and the tube plug 12 seals the double-layer test tube body 1.

[0036] In summary: by providing an inner layer made of polyethylene terephthalate material and an outer layer made of polycarbonate material, the inner layer provides an excellent gas and liquid barrier, protects the internal sample from the influence of the external environment, and maintains the stability of the sample. At the same time, the outer layer has excellent impact resistance, which can effectively prevent the test tube from breaking when it falls or collides, thereby increasing the durability of the test tube; by providing a tube plug 12 connected by an elastic pull rope 11, it is ensured that the tube plug 12 fits tightly, thereby improving the sealing of the test tube, preventing sample leakage or volatilization, and reducing the risk of loss of the tube plug 12, thereby avoiding accidental exposure of the sample during the experiment; by providing a positioning mechanism 4, the stabilizing suction cup 405 is lowered to contact and adsorb with the table, so that the test tube rack is firmly positioned on the work surface, ensuring that the test tube rack is not easy to slide during operation, reducing the risk of accidental tipping or collision, and by providing a support shaft 5, the base 6 and the partition 7 can be driven to rotate. The revolution design enables each test tube to rotate within the reach, so that the user can easily pick up any test tube, reducing the trouble of bending over or reaching out.

Claims

1. A plastic double-layer test tube with strong anti-breakage barrier properties, comprising a double-layer test tube body (1) and a mounting seat (2), characterized in that: Grooves (3) are provided on both sides of the mounting seat (2) near the bottom, and positioning mechanisms (4) are provided inside the two grooves (3). A support shaft (5) is rotatably connected to the center position of the top of the mounting seat (2). The outer wall of the support shaft (5) is fixedly connected to a chassis (6) near the bottom, and the outer wall of the support shaft (5) is fixedly connected to a partition (7) near the top. A plurality of placement grooves (8) are provided on the top of the chassis (6), and a plurality of clamping grooves (9) are provided through the inside of the partition (7). A fixing ring (10) is fixedly connected to the outer wall of the double-layer test tube body (1) near the top, a pull rope (11) is fixedly connected to the top of the fixing ring (10), and a pipe plug (12) is fixedly connected to the top of the pull rope (11).

2. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The inner layer of the double-layer test tube body (1) is made of polyethylene terephthalate material, and the outer layer of the double-layer test tube body (1) is made of polycarbonate material.

3. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: A shock-absorbing pad is fixedly connected to the bottom of the mounting seat (2).

4. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The positioning mechanism (4) comprises a support plate (401) fixedly connected to the inner wall of the groove (3); a threaded rod (402) is rotatably connected inside the support plate (401); a turntable (403) is fixedly connected to the top of the threaded rod (402); a rotating seat (404) is rotatably mounted on the bottom of the threaded rod (402); a stabilizing suction cup (405) is fixedly connected to the bottom of the rotating seat (404); and two guide columns (406) are fixedly connected to the top of the stabilizing suction cup (405).

5. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 4, characterized in that: The support plate (401) is provided with a thread groove corresponding to the threaded rod (402) and two through holes corresponding to the guide posts (406).

6. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The inner walls of the plurality of placement grooves (8) and the inner walls of the plurality of clamping grooves (9) are all fixedly connected with sponge rings.

7. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The plurality of placement grooves (8) and the plurality of clamping grooves (9) are all distributed symmetrically around the circumference.

8. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The drawstring (11) is made of thermoplastic elastomer material.

9. The plastic double-layer test tube with strong anti-breakage barrier properties according to claim 1, characterized in that: The outer wall of the tube plug (12) is tightly fitted with the inner wall of the double-layer test tube body (1), and a sealing ring is fixedly connected to the outer wall of the tube plug (12).

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