Pipettor capable of preserving heat

Abstract

The utility model relates to the technical field of pipetting, and provides a heat preservation pipettor which comprises a pipettor body, a push rod and a heat preservation layer, a handle is installed on the outer wall of the pipettor body, the heat preservation layer is connected to the lower portion of the pipettor body, a liquid storage cylinder is connected to the lower portion of the heat preservation layer, a gun head is installed at the bottom end of the liquid storage cylinder, and the gun head is connected with the push rod. An inner cavity is formed in the inner wall of the pipettor body, a piston is installed on the inner wall of the inner cavity, a push rod is connected to the outer wall of the piston, a part cavity is formed in the side, away from the inner cavity, of the pipettor body, a telescopic rod is installed on the inner wall of the part cavity, and a spring is installed on the outer wall of the telescopic rod. A T-shaped buckle is installed at one end of the telescopic rod, a limiting block is arranged on the outer wall of the side, close to the T-shaped buckle, of the push rod, and a clamping plate is arranged on the side, away from the limiting block, of the T-shaped buckle. By means of the technical scheme, the problems that in the prior art, a push rod is easily affected by air pressure to move, the gun head is inconvenient to disassemble and clean, and liquid seepage is prone to occurring are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid transfer, in particular to a heat-insulating liquid transfer device. Background Art

[0002] In laboratory or medical settings, pipettes are used to accurately move and dispense liquids. Insulated pipettes are designed for pipetting operations that require specific temperature conditions.

[0003] The patent specification with the announcement number CCN 20839005 discloses a heat-insulating pipette, which includes a pipette body and a pipette shell. The pipette body is sleeved inside the pipette shell. The top and bottom of the pipette body are respectively provided with a first through hole and a second through hole, and a nozzle is sleeved outside the second through hole. The beneficial effects achieved by the utility model are as follows: the utility model enables the pipetting pressing rod on the pipette to move up and down through the groove and the opening provided on the pipette shell and the limit block provided in the groove, and the provided positioning pin can limit and quantify the quantitative baffle of the pipette, so that the pipette can be quantitatively circulated when used; and the utility model is improved on the basis of the original index finger hook, so that the fingers on the palm holding the pipette can perfectly fit with the pipette shell, which can facilitate the staff to hold the pipette for pipetting operation and facilitate the operation when using the pipette.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned heat-insulating pipette has the following problems: the pipette limits the push rod by a slider arranged on the outside of the push rod to achieve the effect of quantitative pipetting, but the pipetting process is easily affected by air pressure, causing the push rod to press and cause the liquid to flow out, and the gun tip is prone to liquid leakage. For this reason, we proposed a heat-insulating pipette. Utility Model Content

[0005] The utility model provides a heat-insulating pipette, which solves the problems in the related art that the push rod is easily affected by air pressure and moves, the gun head is inconvenient to disassemble and clean, and is easy to leak liquid.

[0006] The technical solution of the utility model is as follows:

[0007] A heat-insulating pipette, comprising a heat-insulating pipette, characterized in that it comprises a pipette body, a push rod and a heat-insulating layer, the outer wall of the pipette body is provided with a handle, the lower part of the pipette body is connected with the heat-insulating layer, the lower part of the heat-insulating layer is connected with a liquid storage cylinder, the bottom end of the liquid storage cylinder is provided with a gun head, the inner wall of the pipette body is provided with an inner cavity, the inner wall of the inner cavity is provided with a piston, the outer wall of the piston is connected with the push rod, the side of the pipette body away from the inner cavity is provided with a parts cavity, the inner wall of the parts cavity is provided with a telescopic rod, the outer wall of the telescopic rod is provided with a spring, one end of the telescopic rod is provided with a T-shaped buckle, the outer wall of the push rod close to the T-shaped buckle is provided with a limiting block, the side of the T-shaped buckle away from the limiting block is provided with a clamping plate, the side of the T-shaped buckle is provided with a positioning pin, and one end of the positioning pin passes through the outer wall of the pipette body and is connected with a button.

[0008] Preferably, slide blocks are installed on both sides of the positioning pin, and the inner wall of the pipette body is symmetrically provided with slide grooves.

[0009] Preferably, the slider is in a ladder-shaped structure, and the slider and the slide groove match each other.

[0010] Preferably, a seepage collection cylinder is connected below the pipette body, and a heat-insulating layer is installed on the outer wall of the seepage collection cylinder.

[0011] Preferably, the thermal insulation layer is in the form of a cavity, and the inner wall of the thermal insulation layer is provided with thermal insulation cotton.

[0012] Preferably, a seepage collecting cylinder is installed at the bottom end of the liquid storage cylinder, and a gun head is connected to the bottom end of the seepage collecting cylinder.

[0013] Preferably, the inner wall of the liquid storage cylinder is provided with an internal thread, and the top end of the seepage collection cylinder is provided with an external thread matching the internal thread.

[0014] Preferably, the card plate is rectangular, and the spacing between the card plates matches the positioning pins.

[0015] The working principle and beneficial effects of the utility model are:

[0016] 1. In the utility model, the telescopic rod, T-shaped buckle and positioning pin are arranged, and the push rod is pulled upward to use air pressure to suck liquid from the liquid storage cylinder, and the telescopic rod and spring are used to increase the resistance of pulling the push rod upward to keep sucking liquid at a uniform speed. After the liquid is sucked in, the button is pressed to push the front section of the positioning pin into the inner wall of the card plate to position the T-shaped buckle, and the pressure generated by the deformation of the spring is used to make the telescopic rod press the T-shaped buckle to increase the friction between the contact surface of the card plate and the positioning pin, and the T-shaped buckle is engaged, and then the T-shaped buckle is used to limit the push rod to prevent the push rod from being affected by the air pressure to push the piston to squeeze out the liquid.

[0017] 2. In the utility model, the heat-insulating layer, the liquid storage cylinder and the seepage collecting cylinder are provided, and the heat-insulating layer is used to keep the liquid sucked into the liquid storage cylinder warm. At the same time, the internal thread provided on the inner wall of the liquid storage cylinder and the external thread provided on the outer wall of the top end of the seepage collecting cylinder are used to facilitate the disassembly and assembly of the liquid storage cylinder and the liquid sucked into the liquid storage cylinder at the same time. When there is liquid accumulated on the inner wall, the top end of the gun head extends into the inside of the seepage collecting cylinder, and the excess liquid will not seep out from the gun head, but accumulate on both sides of the seepage collecting cylinder. The seepage collecting cylinder is separated from the heat-insulating layer by rotating the seepage collecting cylinder, and the excess liquid is taken out, and at the same time, it is convenient to clean the inner wall of the pipette. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the main structure of the pipette proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the half-section structure of the pipette body proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the inner cavity structure proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the T-shaped buckle structure proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the liquid storage cylinder structure proposed by the utility model.

[0024] In the figure: 1. pipette body; 2. handle; 3. push rod; 4. button; 5. insulation layer; 6. liquid storage cylinder; 7. seepage collection cylinder; 8. gun head; 9. piston; 10. telescopic rod; 11. spring; 12. T-shaped buckle; 13. clamping plate; 14. positioning pin; 15. slider; 16. limit block; 17. slide groove; 18. parts cavity; 19. inner cavity. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Figure 1 to Figure 5As shown, this embodiment proposes a heat-insulating pipette, including a heat-insulating pipette, characterized in that it includes a pipette body 1, a push rod 3 and a heat-insulating layer 5, the outer wall of the pipette body 1 is equipped with a handle 2, the lower part of the pipette body 1 is connected to the heat-insulating layer 5, the lower part of the heat-insulating layer 5 is connected to a liquid storage cylinder 6, the bottom end of the liquid storage cylinder 6 is equipped with a gun head 8, the inner wall of the pipette body 1 is provided with an inner cavity 19, the inner wall of the inner cavity 19 is equipped with a piston 9, the outer wall of the piston 9 is connected to the push rod 3, and the pipette A parts cavity 18 is provided on the side of the main body 1 away from the inner cavity 19, a telescopic rod 10 is installed on the inner wall of the parts cavity 18, a spring 11 is installed on the outer wall of the telescopic rod 10, a T-shaped buckle 12 is installed on one end of the telescopic rod 10, a limiting block 16 is provided on the outer wall of the push rod 3 close to the T-shaped buckle 12, a clamping plate 13 is provided on the side of the T-shaped buckle 12 away from the limiting block 16, a positioning pin 14 is provided on the side of the T-shaped buckle 12, and one end of the positioning pin 14 passes through the outer wall of the pipette body 1 and is connected to a button 4.

[0027] In this embodiment, sliders 15 are installed on both sides of the positioning pin 14 , and the inner wall of the pipette body 1 is symmetrically provided with sliding grooves 17 .

[0028] In this embodiment, the slider 15 is in a ladder-shaped structure, and the slider 15 and the slide groove 17 match each other.

[0029] In this embodiment, the clamping plate 13 is rectangular, and the spacing between the clamping plates 13 matches the positioning pins 14 .

[0030] Specific as Figure 1 , Figure 3 and Figure 4 As shown, when this structure is used, the push rod 3 is pulled upward to utilize air pressure to suck liquid from the liquid storage cylinder 6, and the telescopic rod 10 and the spring 11 are utilized to increase the resistance of pulling the push rod 3 upward to maintain a uniform speed of sucking in liquid. After the liquid is sucked in, the button 4 is pressed to push the front section of the positioning pin 14 into the inner wall of the card plate 13 to position the T-shaped buckle 12, and the pressure generated by the deformation of the spring 11 is utilized to cause the telescopic rod 10 to press the T-shaped buckle 12 to increase the friction between the contact surface of the card plate 13 and the positioning pin 14, and to engage the T-shaped buckle 12, and then the T-shaped buckle 12 is utilized to limit the push rod 3 to prevent the push rod 3 from being affected by the air pressure to push the piston 9 to squeeze out the liquid.

[0031] Embodiment 2: A seepage collecting tube 7 is connected to the lower part of the pipette body 1 , and a heat-insulating layer 5 is installed on the outer wall of the seepage collecting tube 7 .

[0032] In this embodiment, the thermal insulation layer 5 is in the form of a cavity, and the inner wall of the thermal insulation layer 5 is provided with thermal insulation cotton.

[0033] In this embodiment, a seepage collecting cylinder 7 is installed at the bottom end of the liquid storage cylinder 6 , and a gun head 8 is connected to the bottom end of the seepage collecting cylinder 7 .

[0034] In this embodiment, the inner wall of the liquid storage cylinder 6 is provided with an internal thread, and the top end of the seepage collection cylinder 7 is provided with an external thread matching the internal thread.

[0035] Specific as Figure 1 , Figure 2 ,and Figure 5 As shown, when this structure is used, the liquid sucked into the liquid storage cylinder 6 is insulated by the heat-insulating layer 5, and at the same time, the internal thread provided on the inner wall of the liquid storage cylinder 6 and the external thread provided on the outer wall at the top end of the seepage collecting cylinder 7 can be used to facilitate the disassembly and assembly of the liquid storage cylinder 6 and the seepage collecting cylinder 7. At the same time, liquid is sucked into the liquid storage cylinder 6. When there is liquid accumulated on the inner wall, the liquid will pass through the top end of the gun tip 8 extending into the inside of the seepage collecting cylinder 7. Excessive accumulated liquid will not seep out from the gun tip 8, but accumulate on both sides of the seepage collecting cylinder 7. The seepage collecting cylinder 7 is separated from the heat-insulating layer 5 by rotating the seepage collecting cylinder 7, and the excess accumulated liquid is taken out, and at the same time, it is convenient to clean the inner wall of the pipette.

[0036] Working principle: Hold the outer wall of the pipette body 1 with your hand, put your index finger against the handle 2, press the push rod 3 with your other hand, use the piston 9 to discharge the gas in the pipette cavity, put the front end of the gun head 8 into the liquid container, slowly pull the push rod 3 with your hand, use the air pressure difference to suck the liquid into the pipette, use the T-shaped buckle 12 to limit the limit block 16, and the telescopic rod 10 and spring 11 set at the top of the T-shaped buckle 12 to make the push rod 3 move slowly and evenly during the pumping, to prevent the pumping from being too fast, the cavity is not fully pumped with liquid, resulting in the piston 9 being squeezed downward by the air pressure to cause seepage, after the liquid is extracted, press the button 4, use the slider 15 and the slide groove 17 to limit the positioning pin 14 to make the positioning pin 14 move toward the inner wall of the pipette body 1 and make its front end buckle the card plate 13, limit the T-shaped buckle 12, The T-shaped buckle 12 will not be pressed down by the pressure generated by the deformation of the spring 11, thereby driving the piston 9 to press the liquid. The gun head 8 is aimed at the container prepared for transferring the liquid, and the button 4 is pulled out. The elastic force generated by the deformation of the spring 11 is used to press the telescopic rod 10 down on the T-shaped buckle 12, thereby driving the T-shaped buckle 12 to press the limit block 16 so that the piston 9 automatically and slowly pushes the liquid into the container at a uniform speed. The liquid at the liquid outlet of the gun head 8 will not be splashed due to uneven force applied by manual pressing. At the same time, when there is accumulated liquid on the inner wall, it will pass through the top of the gun head 8 extending into the inside of the seepage collecting tube 7. The excess accumulated liquid will not seep out from the gun head 8, but will accumulate on both sides of the seepage collecting tube 7. The seepage collecting tube 7 is separated from the thermal insulation layer 5 by rotating the seepage collecting tube 7, and the accumulated liquid on the inner wall is taken out, and the inner wall of the pipette is cleaned conveniently.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat-insulating pipette, characterized in that: The invention comprises a pipette body (1), a push rod (3) and a heat-insulating layer (5), wherein a handle (2) is installed on the outer wall of the pipette body (1), the heat-insulating layer (5) is connected to the lower part of the pipette body (1), a liquid storage cylinder (6) is connected to the lower part of the heat-insulating layer (5), a gun head (8) is installed at the bottom end of the liquid storage cylinder (6), an inner cavity (19) is arranged on the inner wall of the pipette body (1), a piston (9) is installed on the inner wall of the inner cavity (19), the outer wall of the piston (9) is connected to the push rod (3), and a part is arranged on the side of the pipette body (1) away from the inner cavity (19) A cavity (18) is provided, a telescopic rod (10) is installed on the inner wall of the part cavity (18), a spring (11) is installed on the outer wall of the telescopic rod (10), a T-shaped buckle (12) is installed on one end of the telescopic rod (10), a limit block (16) is provided on the outer wall of the push rod (3) close to the T-shaped buckle (12), a clamping plate (13) is provided on the side of the T-shaped buckle (12) away from the limit block (16), a positioning pin (14) is provided on the side of the T-shaped buckle (12), and one end of the positioning pin (14) passes through the outer wall of the pipette body (1) and is connected to a button (4).

2. A heat-insulating pipette according to claim 1, characterized in that: Slide blocks (15) are installed on both sides of the positioning pin (14), and the inner wall of the pipette body (1) is symmetrically provided with slide grooves (17).

3. A heat-insulating pipette according to claim 2, characterized in that: The slider (15) has a ladder-shaped structure, and the slider (15) and the slide groove (17) match each other.

4. A heat-insulating pipette according to claim 1, characterized in that: A seepage collection tube (7) is connected below the pipette body (1), and a heat-insulating layer (5) is installed on the outer wall of the seepage collection tube (7).

5. A heat-insulating pipette according to claim 1, characterized in that: The thermal insulation layer (5) is in the form of a cavity, and the inner wall of the thermal insulation layer (5) is provided with thermal insulation cotton.

6. A heat-insulating pipette according to claim 1, characterized in that: A seepage collection cylinder (7) is installed at the bottom end of the liquid storage cylinder (6), and a gun head (8) is connected to the bottom end of the seepage collection cylinder (7).

7. A heat-insulating pipette according to claim 6, characterized in that: The inner wall of the liquid storage cylinder (6) is provided with an internal thread, and the top end of the seepage collection cylinder (7) is provided with an external thread matching the internal thread.

8. A heat-insulating pipette according to claim 1, characterized in that: The clamping plate (13) is rectangular, and the spacing between the clamping plates (13) matches the positioning pins (14).

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