CN219923028U

CN219923028U - Pipetting device

Info

Publication number: CN219923028U
Application number: CN202321658427.1U
Authority: CN
Inventors: 刘丽妮
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-10-31
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a pipetting device which comprises a pipetting cylinder, wherein the top of the pipetting cylinder is fixedly connected with a mounting plate, the top of the mounting plate is fixedly connected with a motor, an output shaft of the motor vertically penetrates through the mounting plate and extends to the lower part of the mounting plate, the output shaft of the motor is rotationally connected with the mounting plate, the output end of the motor is fixedly connected with a screw rod, a push-pull rod is sleeved outside the screw rod, the push-pull rod vertically penetrates through the pipetting cylinder and extends to the inside of the pipetting cylinder, the push-pull rod is in sliding connection with the pipetting cylinder, the bottom of the push-pull rod is fixedly connected with a piston, the piston is matched with the pipetting cylinder for use, the bottom of the pipetting cylinder is fixedly connected with a pipetting sleeve, and the outside of the pipetting sleeve is sleeved with a sealing sleeve; the beneficial effects achieved by the utility model are as follows: the piston in the liquid taking cylinder can be driven to move in an electric mode, liquid taking and liquid discharging are facilitated, labor is saved, meanwhile, the liquid taking sleeve can be sealed through the sealing sleeve, and the solution is prevented from being exposed.

Description

Pipetting device

Technical Field

The utility model relates to the technical field of chemical inspection, in particular to a pipetting device.

Background

The chemical analysis can be classified into qualitative analysis and quantitative analysis by using different scientific methods according to the difference of analysis tasks, and the instrument analysis is an analysis of whether the components of the detected substances exist or not and relative content by using a special detection machine in the chemical analysis process.

When chemical analysis is carried out, a liquid transferring device is needed to transfer the solution, but most of common liquid transferring devices are of structures similar to an injector, a worker needs to hold a syringe by one hand when using the liquid transferring device, the other hand pulls out or pushes in a piston in the syringe through a push-pull rod to suck and discharge the reached solution, the operation cannot be realized by one hand, in addition, the hands of the worker who carries out the push-pull rod for a long time are easy to be tired, the strength is high, meanwhile, the sealing capability of a liquid taking pipe of the syringe is poor, and the solution can be exposed from the liquid taking pipe in the moving process, so that the laboratory is polluted.

Disclosure of Invention

The present utility model is directed to a pipetting device for solving the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a pipetting device, includes gets a liquid section of thick bamboo, the top fixedly connected with mounting panel of getting a liquid section of thick bamboo, the top fixedly connected with motor of mounting panel, the output shaft of motor runs through the mounting panel perpendicularly and extends to the below of mounting panel, the output shaft and the mounting panel swivelling joint of motor, the output fixedly connected with lead screw of motor, the outside cover of lead screw is equipped with the push-and-pull rod, the push-and-pull rod runs through a liquid section of thick bamboo perpendicularly and extends to the inside of getting a liquid section of thick bamboo, push-and-pull rod and get a liquid section of thick bamboo sliding connection, the bottom fixedly connected with piston of push-and-pull rod, the piston uses with getting a liquid section of thick bamboo cooperation, get a liquid section of thick bamboo's bottom fixedly connected with get a liquid sleeve, get a liquid sleeve's outside cover has sealing sleeve, sealing sleeve and get a liquid sleeve swivelling joint, get a liquid sleeve's bottom has first through-hole, the second through-hole and first through-hole cooperation use, sealing sleeve's outside cover is equipped with first gear, first gear and sealing sleeve fixed connection, a ratchet wheel fixed connection has a ratchet wheel, a ratchet wheel fixed connection has the inside the ratchet.

Preferably, the outside of getting the liquid section of thick bamboo is kept away from one side fixedly connected with handle of fixed plate, the bottom fixedly connected with control switch of handle, motor and control switch electric connection.

Preferably, the cross section of the push-pull rod is of a square structure.

Preferably, the outer side wall of the piston is attached to the inner side wall of the liquid taking cylinder.

Preferably, the outer side wall of the liquid taking sleeve is attached to the inner side wall of the sealing sleeve.

Preferably, the outside cover of getting liquid telescopic is equipped with the spacing ring, spacing ring and get liquid telescopic fixed connection, sealed telescopic inside has seted up the ring channel that uses with the spacing ring cooperation.

Preferably, the outside cover of sealed sleeve is equipped with the spring, the one end and the liquid section of thick bamboo fixed connection of getting of spring, the other end and the first gear fixed connection of spring.

The beneficial effects achieved by the utility model are as follows: through the liquid taking cylinder, the mounting panel, the motor, the lead screw, the push-pull rod, the piston, liquid taking sleeve, sealing sleeve, first gear, the fixed plate, the dwang, pawl, second gear, the ratchet, first through-hole, second through-hole, handle, control switch of setting, can drive the piston in the liquid taking cylinder through electric mode and remove, conveniently get liquid and go out, it is more laborsaving, can seal liquid taking sleeve through sealing sleeve simultaneously, prevent that the solution from exposing.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the construction of the pawl of the present utility model;

FIG. 4 is a schematic view of the structure of the first through hole of the present utility model;

fig. 5 is a schematic structural view of a second through hole of the present utility model.

In the figure: 1. a liquid taking cylinder; 2. a mounting plate; 3. a motor; 4. a screw rod; 5. a push-pull rod; 6. a piston; 7. a liquid taking sleeve; 8. a sealing sleeve; 9. a first gear; 10. a fixing plate; 11. a rotating lever; 12. a pawl; 13. a second gear; 14. a ratchet wheel; 15. a first through hole; 16. a second through hole; 17. a handle; 18. a control switch; 19. a limiting ring; 20. an annular groove; 21. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, the present utility model provides a technical solution:

the utility model provides a pipetting device, including a liquid taking tube 1, the top fixedly connected with mounting panel 2 of a liquid taking tube 1, the top fixedly connected with motor 3 of mounting panel 2, the output shaft of motor 3 runs through mounting panel 2 perpendicularly and extends to the below of mounting panel 2, the output shaft of motor 3 rotates with mounting panel 2 to be connected, the output fixedly connected with lead screw 4 of motor 3, the outside cover of lead screw 4 is equipped with push-and-pull rod 5, push-and-pull rod 5 runs through liquid taking tube 1 perpendicularly and extends to the inside of liquid taking tube 1, push-and-pull rod 5 and liquid taking tube 1 sliding connection, the bottom fixedly connected with piston 6 of push-and-pull rod 5, piston 6 and liquid taking tube 1 cooperation use, the bottom fixedly connected with liquid taking sleeve 7 of liquid taking tube 1, the outside cover of liquid taking sleeve 7 is equipped with sealed sleeve 8, sealed sleeve 8 and liquid taking sleeve 7 rotate to be connected, first through-hole 15 has been seted up to the bottom of liquid taking sleeve 7, second through-hole 16 has been seted up to the bottom of sealed sleeve 8, second through-hole 16 and first through-hole 15 and second through-hole 16 cooperate use, first through-hole 15 and second through-hole 16 stagger each other, be used for liquid taking and preventing leakage of liquid when communicating when being used for liquid taking and staggering; the outside cover of sealed sleeve 8 is equipped with first gear 9, first gear 9 and sealed sleeve 8 fixed connection, the outside fixedly connected with fixed plate 10 of a liquid section of thick bamboo 1 is got, the inside rotation of fixed plate 10 is connected with dwang 11, the top fixedly connected with pawl 12 of dwang 11, the bottom fixedly connected with second gear 13 of dwang 11, second gear 13 and first gear 9 meshing are connected, the outside cover of lead screw 4 is equipped with ratchet 14, ratchet 14 and lead screw 4 fixed connection, ratchet 14 and pawl 12 cooperation use, can drive ratchet 14 rotation when lead screw 4 rotates, ratchet 14's rotation can promote the pawl 12 of originally block with it keep away from ratchet 14, the keeping away from of pawl 12 then can drive dwang 11 rotation on the fixed plate 10, dwang 11 rethread first gear 9 and second gear 13 drive the outside sealed sleeve 8 rotation of liquid section of thick bamboo 7 for first through-hole 15 and second through-hole 16 intercommunication, conveniently get liquid and play liquid.

A handle 17 is fixedly connected to one side, far away from the fixed plate 10, of the outside of the liquid taking cylinder 1, a control switch 18 is fixedly connected to the bottom of the handle 17, the motor 3 is electrically connected with the control switch 18, electric equipment in the device is powered by an external power supply, and the motor 3 is controlled through the control switch 18; the cross section of the push-pull rod 5 is of a square structure, and the push-pull rod 5 is limited, so that the push-pull rod 5 can be driven to automatically move when the screw rod 4 rotates, and the piston 6 is driven to move; the outer side wall of the piston 6 is attached to the inner side wall of the liquid taking cylinder 1, so that tightness is ensured, and the liquid taking cylinder is used for extracting the solution; the outer side wall of the liquid taking sleeve 7 is attached to the inner side wall of the sealing sleeve 8, so that the tightness between the liquid taking sleeve and the sealing sleeve is ensured, and the leakage of the solution is prevented; the outside of the liquid taking sleeve 7 is sleeved with a limiting ring 19, the limiting ring 19 is fixedly connected with the liquid taking sleeve 7, an annular groove 20 matched with the limiting ring 19 is formed in the sealing sleeve 8, and the sealing sleeve 8 and the liquid taking sleeve 7 are limited to prevent slipping; the outside cover of sealed sleeve 8 is equipped with spring 21, and the one end and the liquid taking cylinder 1 fixed connection of spring 21, the other end and the first gear 9 fixed connection of spring 21, the torsion of spring 21 is used for driving sealed sleeve 8 to rotate back to original position.

Specifically, when the utility model is used, first, the first through hole 15 on the liquid taking sleeve 7 and the second through hole 16 on the sealing sleeve 8 are in a mutually staggered state, at this time, the sealing sleeve 8 seals the liquid taking sleeve 7, so that the leakage of solution can be prevented, when liquid taking or liquid discharging is needed, a worker holds the handle 17, the motor 3 is started to rotate forward or reversely through the control switch 18, the motor 3 drives the screw rod 4 to rotate, the screw rod 4 drives the ratchet wheel 14 to rotate, the ratchet wheel 14 pushes the pawl 12 to enable the pawl 12 to be separated from the ratchet wheel 14 and not to be clamped, the pushed pawl 12 drives the second gear 13 to rotate through the rotating rod 11, the second gear 13 drives the sealing sleeve 8 to rotate through the first gear 9, the second through hole 16 on the sealing sleeve 8 is communicated with the first through hole 15 on the liquid taking sleeve 7, meanwhile, the rotating rod 5 drives the piston 6 to move, so that the original solution in the liquid taking sleeve 1 is discharged or pumped into the liquid taking sleeve 1 through the control switch 18, the motor 3 stops after the operation is finished, the torsion force of the spring 21 is acted on the sleeve 8 to enable the sealing sleeve 7 to return to the sealing sleeve 7.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Pipetting device, comprising a pipetting cylinder (1), characterized in that: the top fixedly connected with mounting panel (2) of a liquid taking section of thick bamboo (1), the top fixedly connected with motor (3) of mounting panel (2), the output shaft of motor (3) runs through mounting panel (2) perpendicularly and extends to the below of mounting panel (2), the output shaft of motor (3) is connected with mounting panel (2) rotation, the output fixedly connected with lead screw (4) of motor (3), the outside cover of lead screw (4) is equipped with push-and-pull rod (5), push-and-pull rod (5) runs through liquid taking section of thick bamboo (1) perpendicularly and extends to the inside of liquid taking section of thick bamboo (1), push-and-pull rod (5) and liquid taking section of thick bamboo (1) sliding connection, the bottom fixedly connected with piston (6) of push-and-pull rod (5), piston (6) and liquid taking section of thick bamboo (1) cooperation use, the bottom fixedly connected with liquid taking sleeve (7) of liquid taking section of thick bamboo (7) outside cover is equipped with sealed sleeve (8), sealed sleeve (8) and liquid taking sleeve (7) rotation are connected with, second through-hole (16) are seted up with one bottom (16) through-hole (15), the outside cover of sealed sleeve (8) is equipped with first gear (9), first gear (9) and sealed sleeve (8) fixed connection, the outside fixedly connected with fixed plate (10) of getting liquid section of thick bamboo (1), the inside rotation of fixed plate (10) is connected with dwang (11), the top fixedly connected with pawl (12) of dwang (11), the bottom fixedly connected with second gear (13) of dwang (11), second gear (13) and first gear (9) meshing are connected, the outside cover of lead screw (4) is equipped with ratchet (14), ratchet (14) and lead screw (4) fixed connection, ratchet (14) are used with pawl (12) cooperation.

2. A pipetting device according to claim 1, wherein: one side of the outside of the liquid taking cylinder (1) far away from the fixed plate (10) is fixedly connected with a handle (17), the bottom of the handle (17) is fixedly connected with a control switch (18), and the motor (3) is electrically connected with the control switch (18).

3. A pipetting device according to claim 1, wherein: the cross section of the push-pull rod (5) is of a square structure.

4. A pipetting device according to claim 1, wherein: the outer side wall of the piston (6) is attached to the inner side wall of the liquid taking cylinder (1).

5. A pipetting device according to claim 1, wherein: the outer side wall of the liquid taking sleeve (7) is attached to the inner side wall of the sealing sleeve (8).

6. A pipetting device according to claim 1, wherein: the outside cover of getting liquid sleeve (7) is equipped with spacing ring (19), spacing ring (19) and get liquid sleeve (7) fixed connection, annular channel (20) that cooperation of spacing ring (19) was used are seted up to the inside of sealed sleeve (8).

7. A pipetting device according to claim 1, wherein: the outside cover of sealed sleeve (8) is equipped with spring (21), the one end and the liquid section of thick bamboo (1) of getting of spring (21) are fixed connection, the other end and the first gear (9) of spring (21) are fixed connection.