Pipette with heat preservation device

Abstract

The utility model relates to the technical field of pipettes, in particular to a pipette with a heat preservation device, which comprises an outer cylinder, two ends of the outer cylinder are respectively in threaded connection with a first mounting seat and a second mounting seat, and a pipette body is further arranged in the first mounting seat; the sealing assembly is arranged on one side of the external pipe in a sleeving manner, and the sealing assembly is used for sealing when liquid is sucked into the transfer pipette body; and the driving assembly is arranged on one side of the interior of the first mounting base, and the driving assembly is used for driving the sealing assembly to be opened and closed. Compared with the prior art, by arranging the driving assembly, manual intervention of an operator is reduced, the operation efficiency is improved, stable opening and closing of the sealing assembly are ensured through synchronous rotation between the driving wheel and the driven wheel, and misoperation or liquid leakage caused by asynchronous rotation is avoided; and the stability and the reliability of experimental operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to a pipette with a heat preservation device. Background Art

[0002] A pipette is a measuring instrument used to accurately transfer a certain volume of solution. A pipette is a measuring instrument that is only used to measure the volume of the solution it releases. It is widely used as an experimental sampling instrument in laboratories, scientific research institutions, or chemical, food and other enterprises and institutions.

[0003] In the prior art, a Chinese patent document with publication number CN219701953U proposes a quantitative pipette that can conveniently adjust the volume of the cavity in the pipette body by setting an inner liquid tube body with an adjustable position, so that the pipette can quantitatively absorb the amount of liquid required for the experiment, thereby improving the adaptability of the pipette. At the same time, by setting an overflow channel in the inner liquid tube body, the liquid can enter the liquid accumulation tank through the overflow channel after the excess liquid is sucked in, always ensuring that the volume of the cavity in the pipette body plus the total volume of the pipette in the overflow channel remains unchanged, thereby improving the accuracy of pipetting. However, consistent with the traditional method, due to the insufficient sealing of the traditional pipette, the liquid will leak during the absorption or release process, and due to the insufficient sealing of the traditional pipette, additional sealing measures are required to ensure the safety and effectiveness of liquid operations, which may include the use of sealants, sleeves or other sealing materials, but these additional measures will increase the complexity and time cost of the operation and reduce the efficiency of the operation. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a pipette with a heat preservation device to solve the problem of insufficient sealing of traditional pipettes.

[0005] Based on the above purpose, the utility model provides a pipette with a heat preservation device, comprising an outer cylinder, wherein the two ends of the outer cylinder are respectively threadedly connected with a first mounting seat and a second mounting seat, a pipette body is further arranged inside the first mounting seat, a piston is movably mounted on one side of the pipette body, a positioning rod is fixedly connected to one end of the piston, the positioning rod is arranged through the first mounting seat, a through tube is arranged at the other end of the pipette body, a handle is fixedly mounted on the bottom end of the first mounting seat, and an external pipe is further threadedly mounted on one side of the through tube;

[0006] A sealing component, which is sleeved on one side of the external tube, and is used to seal the inside of the pipette body when the liquid is sucked in. The sealing component includes a sleeve column sleeved on the outer surface of the external tube, and an opening is provided in the middle of the sleeve column to match the inner diameter of the external tube;

[0007] A driving assembly is arranged at one side of the interior of the first mounting seat, and is used to drive the sealing assembly to open and close.

[0008] Preferably, the driving assembly includes a driving wheel rotatably mounted on the inner side of the first mounting seat, the positioning rod is arranged through the middle of the driving wheel, the outer surface of the positioning rod is provided with a thread, and the middle of the driving wheel is provided with an internal thread groove that is compatible with the thread on the outer surface of the positioning rod.

[0009] Preferably, a driven wheel is rotatably mounted on one side of the first mounting seat, a belt is provided between the driving wheel and the driven wheel to connect, a connecting rod is fixedly mounted on the other side of the driven wheel, one end of the connecting rod is fixedly connected to a rotating gear, and the outer surface of the sleeve is provided with a plurality of teeth matching the rotating gear.

[0010] Preferably, a knob is rotatably mounted on one side of the first mounting seat, the other side of the knob passes through the first mounting seat, and the other end of the knob is fixedly connected to a mortgage wheel, the mortgage wheel is arranged in a cam shape, and the mortgage wheel is adapted to the belt.

[0011] Preferably, a vacuum insulation layer is provided between the outer cylinder and the pipette body for insulating the liquid inside the pipette body.

[0012] Preferably, a plurality of rotating blocks are rotatably mounted on the inner side of the sleeve column, the plurality of rotating blocks are arranged in a circle, and opening and closing pieces are rotatably mounted on the other ends of the plurality of rotating blocks, the plurality of opening and closing pieces are arranged in a petal shape.

[0013] Preferably, the pipette body is detachably connected to the piston, and the pipette body can be detached after use to clean and disinfect the inside of the pipette body.

[0014] Preferably, one side of the opening and closing piece is arranged in an inwardly concave arc shape, and the other side of the opening and closing piece is arranged in an outwardly convex arc surface matched with the other side of the opening and closing piece.

[0015] Beneficial effects of the utility model:

[0016] 1. This pipette with a heat preservation device is provided with a driving assembly. When the positioning rod is pulled to move the piston to absorb liquid, the thread on the outer surface of the positioning rod passed through is matched with the internal thread groove of the driving wheel, thereby driving the driving wheel to rotate clockwise. When the driving wheel rotates clockwise, it will drive the driven wheel to rotate synchronously, thereby driving the connecting rod and the rotating gear to rotate. The rotating gear will drive the sleeve column to rotate synchronously through the teeth to open and close. When the positioning rod is pushed to move the piston to squeeze out liquid, the driving wheel will rotate counterclockwise at this time, driving the sleeve column to rotate in the opposite direction. The automatic operation of the driving assembly is triggered by pulling the positioning rod, so that the opening and closing action of the sealing assembly is automated, reducing the manual intervention of the operator and improving the operating efficiency. The synchronous rotation between the driving wheel and the driven wheel ensures the smooth opening and closing of the sealing assembly, avoids operating errors or liquid leakage caused by asynchronous rotation, and improves the stability and reliability of experimental operation.

[0017] 2. This pipette with a heat preservation device is provided with a sealing component. The opening and closing pieces in the sealing component are arranged in a petal shape. The opening and closing pieces can be rotated and opened and closed under the drive of the rotating block. One side of the opening and closing piece is arranged in an inwardly concave arc shape, and the other side is arranged in an outwardly convex arc surface matched with the other side of the adjacent opening and closing piece, so that the adjacent opening and closing pieces can be tightly matched and the opening and closing action is realized under the drive of the rotating block. The rotating block and the opening and closing piece on the inner side of the sleeve column can be linked by cooperating with the teeth to drive the rotation of the sleeve column, so that the opening and closing effect of the opening and closing piece can be realized under the rotation drive of the rotating block. The sealing component is used for sealing when the liquid is sucked into the pipette body. The rotation opening and closing of the opening and closing piece can realize the opening and closing action of the sealing component, ensuring that the internal seal is intact when the liquid is sucked, and avoiding liquid leakage or contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the driving wheel structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the sealing component structure of the utility model.

[0025] The markings in the figure are:

[0026] 1. Outer cylinder; 2. First mounting seat; 3. Second mounting seat; 4. Pipette body; 5. Positioning rod; 6. Piston; 7. Through tube; 8. Handle; 9. Driving wheel; 10. Internal thread groove; 11. Driven wheel; 12. Belt; 13. Knob; 14. Mortgage wheel; 15. Connecting rod; 16. Rotating gear; 17. External tube; 18. Sleeve column; 19. Teeth; 20. Rotating block; 21. Opening and closing piece. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figures 1 to 6As shown, the pipette with a heat preservation device comprises an outer cylinder 1, and the two ends of the outer cylinder 1 are respectively threadedly connected with a first mounting seat 2 and a second mounting seat 3, and a pipette body 4 is also arranged inside the first mounting seat 2, a piston 6 is movably installed on one side of the pipette body 4, and a positioning rod 5 is fixedly connected to one end of the piston 6, and the positioning rod 5 is arranged through the first mounting seat 2, and a through pipe 7 is arranged at the other end of the pipette body 4, and a handle 8 is fixedly installed at the bottom end of the first mounting seat 2, and an external pipe 17 is also threadedly installed on one side of the through pipe 7; A sealing component is sleeved on one side of the external tube 17. The sealing component is used to seal the pipette body 4 when the liquid is sucked in. The sealing component includes a sleeve column 18 sleeved on the outer surface of the external tube 17. The middle of the sleeve column 18 is provided with an opening that matches the inner diameter of the external tube 17. A driving component is arranged on one side of the interior of the first mounting seat 2. The driving component is used to drive the sealing component to open and close. A vacuum insulation layer is arranged between the outer cylinder 1 and the pipette body 4 to keep the liquid inside the pipette body 4 warm.

[0030] First, the two ends of the outer cylinder 1 are respectively mounted on the first mounting seat 2 and the second mounting seat 3 by threaded connection, so that the pipette is firmly mounted on the experimental equipment. Secondly, the pipette body 4 is placed in the first mounting seat 2, and the piston 6 is movably connected to one side of the pipette body 4. The pipette through tube 7 is inserted into the liquid to be sucked, and the position of the piston 6 is moved so that it can suck the required liquid, so as to create negative pressure in the pipette body 4 and suck the liquid sample or reagent. The grip 8 is fixed at the bottom end of the first mounting seat 2 to provide convenient grip during operation. The other end of the pipette body 4 A through pipe 7 is provided at one end, and the pipe thread is connected to one side of the through pipe 7 to absorb and release the liquid. The sealing assembly includes a sleeve 18, which is sleeved on the outer surface of the external pipe 17, and a driving assembly for controlling the opening and closing action of the sealing assembly to ensure the sealing of the liquid during operation. Finally, the vacuum insulation layer is located between the outer cylinder 1 and the pipette body 4 to maintain the temperature of the liquid stable. The design and combination of these structural components enable the pipette to achieve multiple functions such as temperature protection, liquid sealing and convenient operation during operation, thereby improving the accuracy, efficiency and reliability of the experiment.

[0031] like Figures 2 to 5 As shown, the driving assembly includes a driving wheel 9 rotatably mounted on the inner side of the first mounting seat 2, a positioning rod 5 is arranged through the middle of the driving wheel 9, a thread is provided on the outer surface of the positioning rod 5, and an internal thread groove 10 matching the thread on the outer surface of the positioning rod 5 is provided in the middle of the driving wheel 9, a driven wheel 11 is rotatably mounted on one side of the first mounting seat 2, a belt 12 is arranged between the driving wheel 9 and the driven wheel 11, a connecting rod 15 is fixedly installed on the other side of the driven wheel 11, one end of the connecting rod 15 is fixedly connected to a rotating gear 16, and a plurality of teeth 19 matching the rotating gear 16 are arranged on the outer surface of the sleeve 18;

[0032] When the positioning rod 5 is pulled to move the piston 6 to absorb the liquid, the thread on the outer surface of the positioning rod 5 passing through is matched with the internal thread groove 10 of the driving wheel 9, thereby driving the driving wheel 9 to rotate clockwise. When the driving wheel 9 rotates clockwise, it will drive the driven wheel 11 to rotate synchronously, thereby driving the connecting rod 15 and the rotating gear 16 to rotate. The rotating gear 16 will drive the sleeve column 18 to rotate synchronously through the teeth 19 to open and close. When the positioning rod 5 is pushed to move the piston 6 to squeeze out the liquid, the driving wheel 9 will rotate counterclockwise at this time, driving the sleeve column 18 to rotate in the opposite direction. The pulling of the positioning rod 5 triggers the automatic operation of the drive assembly, so that the opening and closing action of the sealing assembly is automated, reducing the manual intervention of the operator and improving the operating efficiency. The synchronous rotation between the driving wheel 9 and the driven wheel 11 ensures the smooth opening and closing of the sealing assembly, avoids operating errors or liquid leakage caused by asynchronous rotation, and improves the stability and reliability of the experimental operation.

[0033] like Figure 1 , Figure 3 As shown, a knob 13 is rotatably mounted on one side of the first mounting seat 2, and the other side of the knob 13 is arranged through the first mounting seat 2, and the other end of the knob 13 is fixedly connected to a mortgage wheel 14, which is arranged in a cam shape and is adapted to the belt 12;

[0034] The position of the mortgage wheel 14 can be adjusted by rotating the knob 13, thereby adjusting the tension of the belt 12, so as to ensure that the belt 12 fits tightly on the transmission wheel, improve the efficiency and stability of the transmission, and the appropriate tension can reduce the slippage and jumping of the belt 12 during the transmission process, ensure the stability and high efficiency of the transmission efficiency, reduce energy loss, and by adjusting the tension, the friction between the belt 12 and the transmission wheel can be reduced, the service life of the belt 12 can be extended, and the maintenance and replacement costs can be reduced.

[0035] like Figure 1 , Figure 6 As shown, a plurality of rotating blocks 20 are rotatably mounted on the inner side of the sleeve 18, and the plurality of rotating blocks 20 are arranged in a circle. The other ends of the plurality of rotating blocks 20 are rotatably mounted with opening and closing pieces 21, and the plurality of opening and closing pieces 21 are arranged in a petal shape, and one side of the opening and closing piece 21 is arranged in an inwardly concave arc shape, and the other side of the opening and closing piece 21 is arranged in an outwardly convex arc surface matched with the other side of the opening and closing piece 21. One side of the opening and closing piece 21 is arranged in an inwardly concave arc shape, and the other side of the opening and closing piece 21 is arranged in an outwardly convex arc surface matched with the other side of the opening and closing piece 21.

[0036] A plurality of rotating blocks 20 are rotatably mounted on the inner side of the sleeve 18. These rotating blocks 20 are arranged in a circle. When the sleeve 18 rotates, the rotating blocks 20 rotate accordingly. An opening and closing piece 21 is rotatably mounted on the other end of each rotating block 20. These opening and closing pieces 21 are arranged in a petal shape. The opening and closing pieces 21 can be rotated and opened and closed under the drive of the rotating block 20. One side of the opening and closing piece 21 is set to be an inner concave arc shape, and the other side is set to be an outer convex arc surface adapted to the other side of the adjacent opening and closing piece 21, so that the adjacent opening and closing pieces 21 can be tightly closed. The opening and closing action is realized by the cooperation with the rotating block 20, and the rotation of the sleeve 18 is driven by the cooperating teeth 19. The rotating block 20 and the opening and closing piece 21 on the inner side of the sleeve 18 can be linked, so that the opening and closing effect of the opening and closing piece 21 can be realized under the rotation of the rotating block 20. It is applied to the sealing component to seal when the liquid is sucked into the pipette body 4. The opening and closing of the opening and closing piece 21 can realize the opening and closing action of the sealing component, ensuring that the internal seal is intact when the liquid is sucked, and avoiding liquid leakage or contamination.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0038] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A pipette with a heat preservation device, characterized in that: include: An outer cylinder (1), wherein the two ends of the outer cylinder (1) are respectively threadedly connected to a first mounting seat (2) and a second mounting seat (3), a pipette body (4) is also arranged inside the first mounting seat (2), a piston (6) is movably mounted on one side of the pipette body (4), one end of the piston (6) is fixedly connected to a positioning rod (5), the positioning rod (5) is arranged through the first mounting seat (2), a through pipe (7) is arranged at the other end of the pipette body (4), a handle (8) is fixedly mounted on the bottom end of the first mounting seat (2), and an external pipe (17) is also threadedly mounted on one side of the through pipe (7); a sealing component, which is sleeved on one side of the external tube (17), and is used to seal the interior of the pipette body (4) when the liquid is sucked in, and the sealing component comprises a sleeve column (18) sleeved on the outer surface of the external tube (17), and an opening is provided in the middle of the sleeve column (18) to match the inner diameter of the external tube (17); A drive assembly is arranged on one side of the interior of the first mounting seat (2), and is used to drive the sealing assembly to open and close.

2. The pipette with a heat preservation device according to claim 1, characterized in that: The driving assembly comprises a driving wheel (9) rotatably mounted on the inner side of the first mounting seat (2); the positioning rod (5) is arranged through the middle of the driving wheel (9); the outer surface of the positioning rod (5) is provided with a thread; the middle of the driving wheel (9) is provided with an internal thread groove (10) adapted to the thread on the outer surface of the positioning rod (5).

3. The pipette with a heat preservation device according to claim 2, characterized in that: A driven wheel (11) is rotatably mounted on one side of the first mounting seat (2); a belt (12) is provided between the driving wheel (9) and the driven wheel (11) to connect them; a connecting rod (15) is fixedly mounted on the other side of the driven wheel (11); one end of the connecting rod (15) is fixedly connected to a rotating gear (16); and a plurality of teeth (19) matching the rotating gear (16) are provided on the outer surface of the sleeve column (18).

4. The pipette with a heat preservation device according to claim 3, characterized in that: A knob (13) is rotatably mounted on one side of the first mounting seat (2), the other side of the knob (13) is arranged to penetrate the first mounting seat (2), and the other end of the knob (13) is fixedly connected to a mortgage wheel (14), the mortgage wheel (14) is arranged in the form of a cam, and the mortgage wheel (14) is adapted to the belt (12).

5. The pipette with a heat preservation device according to claim 1, characterized in that: A vacuum insulation layer is provided between the outer cylinder (1) and the pipette body (4), for insulating the liquid inside the pipette body (4).

6. The pipette with a heat preservation device according to claim 1, characterized in that: A plurality of rotating blocks (20) are rotatably mounted on the inner side of the sleeve column (18), the plurality of rotating blocks (20) are arranged in a circle, and opening and closing pieces (21) are rotatably mounted on the other ends of the plurality of rotating blocks (20), the plurality of opening and closing pieces (21) are arranged in a petal shape.

7. The pipette with a heat preservation device according to claim 6, characterized in that: One side of the opening and closing piece (21) is arranged in an inwardly concave arc shape, and the other side of the opening and closing piece (21) is arranged in an outwardly convex arc surface that matches the other side of the opening and closing piece (21).

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