CN220803342U

CN220803342U - Multi-pipeline pipettor

Info

Publication number: CN220803342U
Application number: CN202322673345.0U
Authority: CN
Inventors: 冯仁兵
Original assignee: Shanghai Shuokong Medical Technology Co ltd
Current assignee: Shanghai Shuokong Medical Technology Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-04-19
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to the technical field of pipettors, in particular to a multi-pipeline pipettor which comprises a mounting shell, wherein a negative pressure cavity and four liquid storage cavities are respectively formed in the mounting shell, a mounting cover is fixedly arranged on the lower surface of the mounting shell, four suction nozzles are arranged in the mounting cover, a tube placing cavity is formed in the housing of the mounting cover, four connecting pipes which are respectively communicated with the four suction nozzles are arranged on the inner bottom walls of the four liquid storage cavities, a mounting frame is embedded in the inner top wall of the negative pressure cavity, and an electric push rod is fixedly arranged in the mounting frame. According to the utility model, the suction nozzle, the liquid storage cavity and the electric push rod are arranged, the piston is driven to move upwards in the negative pressure cavity by the contraction of the electric push rod, the four liquid storage cavities are subjected to negative pressure by the upward movement of the piston through the vent holes, and the liquid storage cavity with the negative pressure is used for sucking external liquid into the liquid storage cavity through the connecting pipe and the suction nozzle, so that the purpose of simultaneously sucking and pipetting various liquids can be achieved by the liquid pipette, and the pipetting efficiency of the liquid pipette is improved.

Description

Multi-pipeline pipettor

Technical Field

The utility model relates to the technical field of pipettors, in particular to a multi-pipeline pipettor.

Background

The liquid-transfering device is also called a liquid-transfering gun, and when the research in analysis and test is carried out, it is generally used to transfer small quantity or trace quantity of liquid, and according to principle, the liquid-transfering device can be divided into gas piston type liquid-transfering device and external piston type liquid-transfering device, and the gas piston type liquid-transfering device is mainly used for standard liquid-transfering, and the external piston type liquid-transfering device is mainly used for treating volatile, easy-to-corrode and viscous special liquid.

Among the prior art, chinese patent of publication No. CN215877991U a pipettor has adopted "including stock solution bottle and pipette, the top of stock solution bottle is equipped with the opening, and the opening part can be dismantled and is connected with sealed lid, is provided with the getter pump in the sealed lid, is equipped with button and outlet duct on the sealed lid, and the outlet duct is held the intercommunication with the giving vent to anger of getter pump, the one end intercommunication of sealing lid is kept away from with the stock solution bottle to the one end of pipette, the top surface of pipette is not higher than the scheme of the diapire of the inside cavity of stock solution bottle", and this scheme has when the liquid in the pipette carries out follow-up experiment as taking liquid, the effect of being convenient for liquid from pipette and stock solution bottle.

However, the above solution still has some drawbacks, for example, the pipette of the above solution has only a single suction nozzle, so that it can only pump a single kind of liquid through one suction nozzle, and cannot pump multiple kinds of liquids at the same time, and the pipetting efficiency is low, i.e. the solution lacks a mechanism of multi-channel pipetting, and in view of this, the present utility model proposes a multi-channel pipette.

Disclosure of Invention

(One) solving the technical problems

The utility model aims to provide a multi-pipeline pipette which has the advantage of simultaneously pumping a plurality of liquids so as to solve the problem of low pipetting efficiency in the prior art.

(II) technical scheme

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

The utility model provides a multi-pipeline pipettor, includes the installation shell, negative pressure chamber and four stock solution chambers have been seted up respectively to the inside of installation shell, the lower surface fixed mounting of installation shell has the installation cover, the inside of installation cover is provided with four suction nozzles, the inside tube placement chamber that has been seted up of casing of installation cover, the interior bottom wall in four stock solution chambers is provided with four connecting pipes that communicate with four suction nozzles respectively, the interior roof in negative pressure chamber has inlayed the installing frame, the inside fixed mounting of installing frame has electric putter, electric putter's flexible end extends to the inside in negative pressure chamber and fixedly connected with piston;

The suction nozzle is in sliding connection with the inside of the mounting cover, and a fixed limiting mechanism is arranged in the shell of the suction nozzle.

As the preferential technical scheme, the front of installation shell has been seted up and has been run through to four liquid storage intracavity portion's sightseeing opening, sightseeing open-ended inner wall fixedly connected with transparent plate, and the surface of transparent plate is provided with the scale mark.

As the preferred technical scheme, fixed stop gear is including seting up respectively at the front of suction nozzle and two operation chambeies on the back, and the front of suction nozzle respectively has run through to two fixed openings and the slip opening of operation intracavity portion with the back, and slip open-ended inner wall sliding connection has the action bars, and the front of installation cover has all been seted up with the back and has been supplied the gliding slip strip mouth of action bars.

As the preferable technical scheme, the one end that the action bars is located the operation intracavity portion is fixed mounting has the drive plate, and the surface of drive plate is through fixed opening fixedly connected with supporting the piece, and the material that supports the piece is wear-resisting rubber.

As the preferable technical scheme, the inner wall of the operation cavity is fixedly connected with three springs, and one end of the spring far away from the inner wall of the operation cavity is fixedly connected with the surface of the transmission plate.

As the preferable technical scheme, the inner top wall of the mounting cover is provided with an opening communicated with the inside of the tube placing cavity, and the four connecting tubes can move under the action of the opening.

As the preferable technical scheme, the inner bottom wall of the negative pressure cavity is provided with vent holes communicated with the interiors of the four liquid storage cavities, the back surface of the installation shell is provided with an air outlet nozzle, and the inner wall of the vent holes and the surface of the air outlet nozzle are both provided with one-way air valves.

(III) beneficial effects

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the utility model, the suction nozzle, the liquid storage cavity and the electric push rod are arranged, the piston is driven to move upwards in the negative pressure cavity by the contraction of the electric push rod, the four liquid storage cavities are subjected to negative pressure by the upward movement of the piston through the vent holes, and the liquid storage cavity with the negative pressure is used for sucking external liquid into the liquid storage cavity through the connecting pipe and the suction nozzle, so that the purpose of simultaneously sucking and pipetting various liquids can be achieved by the liquid pipette, and the pipetting efficiency of the liquid pipette is improved.

2. According to the utility model, the fixed limiting mechanism is arranged to press the two operation rods on the front side and the back side of the suction nozzle, and the operation rods move to drive the transmission plate to move in the operation cavity, so that the abutting blocks on the surface of the transmission plate are separated from the inner wall of the mounting cover, the spacing position of the suction nozzle can be adjusted without the abutting limitation of the abutting blocks, and the practicability of the liquid transfer device is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic illustration of the front cross-section of the present utility model;

FIG. 3 is a schematic side cross-sectional view of a mounting cup of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

Fig. 5 is a schematic side sectional view of the present utility model.

In the figure: 1. a mounting shell; 2. a negative pressure chamber; 3. a liquid storage cavity; 4. a mounting cover; 5. a suction nozzle; 6. a connecting pipe; 7. an electric push rod; 8. a piston; 9. a transparent plate; 10. an operation lever; 11. a drive plate; 12. abutting blocks; 13. 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

According to the drawings 1-5, the embodiment of the utility model provides a multi-pipeline pipettor, which comprises a mounting shell 1, wherein a negative pressure cavity 2 and four liquid storage cavities 3 are respectively arranged in the mounting shell 1, a sightseeing opening penetrating into the four liquid storage cavities 3 is arranged on the front surface of the mounting shell 1, a transparent plate 9 is fixedly connected to the inner wall of the sightseeing opening, scale marks are arranged on the surface of the transparent plate 9, a vent hole communicated with the four liquid storage cavities 3 is arranged on the inner bottom wall of the negative pressure cavity 2, an air outlet nozzle is arranged on the back surface of the mounting shell 1, and one-way air valves are arranged on the inner wall of the vent hole and the surface of the air outlet nozzle.

The lower fixed surface of installation shell 1 installs installation cover 4, the inside of installation cover 4 is provided with four suction nozzles 5, the inside of casing of installation cover 4 has been seted up and has been put the lumen, the interior bottom wall of four stock solution chambeies 3 is provided with four connecting pipes 6 that communicate with four suction nozzles 5 respectively, the opening with put the inside intercommunication of lumen has been seted up to the interior roof of installation cover 4, can supply four connecting pipes 6 to remove under the open-ended effect, the interior roof in negative pressure chamber 2 is inlayed and is equipped with the installing frame, the inside fixed mounting of installing frame has electric putter 7, electric putter 7's flexible end extends to the inside in negative pressure chamber 2 and fixedly connected with piston 8.

The inside sliding connection of suction nozzle 5 and installation cover 4, the inside fixed stop gear that is provided with of casing of suction nozzle 5, fixed stop gear is including seting up respectively in the front of suction nozzle 5 and two operation chambeies on the back, and two fixed opening and the slip opening that run through to the operation intracavity portion are respectively seted up on the front of suction nozzle 5 and the back, and slip open-ended inner wall sliding connection has action bars 10, and the front of installation cover 4 has all been seted up with the back and has been supplied the gliding slip strip mouth of action bars 10.

One end of the operating rod 10, which is positioned in the operating cavity, is fixedly provided with a transmission plate 11, the surface of the transmission plate 11 is fixedly connected with a supporting block 12 through a fixed opening, the supporting block 12 is made of wear-resistant rubber, the inner wall of the operating cavity is fixedly connected with three springs 13, and one end of the spring 13, which is far away from the inner wall of the operating cavity, is fixedly connected with the surface of the transmission plate 11.

When the multi-pipeline liquid transfer device is used, the contraction of the electric push rod 7 drives the piston 8 to move upwards in the negative pressure cavity 2, the upward movement of the piston 8 enables the four liquid storage cavities 3 to be negative in pressure through the vent holes, the negative pressure liquid storage cavities 3 suck external liquid into the liquid storage cavities 3 through the connecting pipe 6 and the suction nozzles 5, so that the liquid transfer device can achieve the purpose of simultaneously pumping and transferring various liquids, the liquid pumping quantity can be controlled through the transparent plate 9 and the scale marks, when the distance between the four suction nozzles 5 is required to be adjusted, the two operation rods 10 on the front side and the back side of the suction nozzles 5 are pressed, the movement of the operation rods 10 drives the transmission plate 11 to move in the operation cavities, the abutting blocks 12 on the surface of the transmission plate 11 are separated from the inner wall of the installation cover 4, the distance positions of the suction nozzles 5 can be adjusted without the abutting limitation of the abutting blocks 12, and the practicability of the liquid transfer device is further improved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A multi-channel pipette comprising a mounting housing (1), characterized in that: negative pressure cavity (2) and four stock solution cavities (3) have been seted up respectively to the inside of installation shell (1), the lower surface fixed mounting of installation shell (1) has installation cover (4), the inside of installation cover (4) is provided with four suction nozzles (5), the inside tube setting cavity that has been seted up of casing of installation cover (4), the interior bottom wall of four stock solution cavities (3) is provided with four connecting pipes (6) with four suction nozzles (5) intercommunication respectively, the interior roof in negative pressure cavity (2) is inlayed and is equipped with the installing frame, electric putter (7) are installed to the inside fixed mounting of installing frame, the flexible end of electric putter (7) extends to the inside of negative pressure cavity (2) and fixedly connected with piston (8);

The suction nozzle (5) is in sliding connection with the inside of the mounting cover (4), and a fixed limiting mechanism is arranged in the shell of the suction nozzle (5).

2. A multi-channel pipette as defined in claim 1 wherein: the front of installation shell (1) has been seted up and has been run through to four liquid storage cavity (3) inside sightseeing opening, sightseeing open-ended inner wall fixedly connected with transparent plate (9), and the surface of transparent plate (9) is provided with the scale mark.

3. A multi-channel pipette as defined in claim 1 wherein: the fixed limiting mechanism comprises two operation cavities which are respectively arranged on the front side and the back side of the suction nozzle (5), the front side and the back side of the suction nozzle (5) are respectively provided with two fixed openings and two sliding openings which penetrate through the operation cavities, the inner wall of each sliding opening is slidably connected with an operation rod (10), and the front side and the back side of the installation cover (4) are respectively provided with a sliding strip opening for the operation rod (10) to slide.

4. A multi-channel pipette as defined in claim 3 wherein: one end of the operating rod (10) positioned in the operating cavity is fixedly provided with a transmission plate (11), the surface of the transmission plate (11) is fixedly connected with a supporting block (12) through a fixed opening, and the supporting block (12) is made of wear-resistant rubber.

5. The multi-channel pipette of claim 4 wherein: the inner wall of the operation cavity is fixedly connected with three springs (13), and one end, away from the inner wall of the operation cavity, of each spring (13) is fixedly connected with the surface of the transmission plate (11).

6. A multi-channel pipette as defined in claim 1 wherein: the inner top wall of the mounting cover (4) is provided with an opening communicated with the inside of the tube placing cavity, and the four connecting tubes (6) can move under the action of the opening.

7. A multi-channel pipette as defined in claim 1 wherein: the inner bottom wall of the negative pressure cavity (2) is provided with vent holes communicated with the interiors of the four liquid storage cavities (3), the back surface of the installation shell (1) is provided with an air outlet nozzle, and the inner walls of the vent holes and the surface of the air outlet nozzle are both provided with one-way air valves.