CN220071696U

CN220071696U - Electric pipettor

Info

Publication number: CN220071696U
Application number: CN202321532178.1U
Authority: CN
Inventors: 涂高祥; 贺全虎; 刘锫
Original assignee: Baiquan Juxing Shenzhen Technology Co ltd
Current assignee: Baiquan Juxing Shenzhen Technology Co ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-11-24
Anticipated expiration: 2033-06-15

Abstract

The utility model relates to the technical field of pipettors, and discloses an electric pipettor which comprises a liquid storage part, a moving part and a driving part. The liquid storage piece comprises a pipette and a suction pipe, the suction pipe is arranged in a hollowed-out manner, the pipette is provided with a suction port, and the suction port is communicated with the suction pipe; one end of the moving piece is slidably accommodated in the suction pipe, and the moving piece is tightly attached to the inner wall of the suction pipe; the driving piece is connected with the other end of the moving piece to drive the moving piece to slide up and down in the suction pipe. The driving piece is connected with the moving piece, the moving piece is accommodated in the suction pipe in a sliding mode, and the driving piece drives the moving piece to slide up and down in the suction pipe so as to extract liquid. Through such setting, very big reduction the volume of electronic pipettor for the installation of electronic pipettor is more portable and has more multiple mounting means.

Description

Electric pipettor

Technical Field

The utility model relates to the technical field of pipettors, in particular to an electric pipettor.

Background

A pipette, also called a pipette, is a measuring tool for transferring liquid from an original container to another container in a range of measurement, and is widely used in fields such as biology and chemistry.

In the use process of the traditional pipettor, an operator repeatedly moves the pipettor between an extracting solution container and a test tube, and the problem of inaccurate extracting precision is often caused by manually extracting liquid. Then the electric pipettor is gradually used, and then the electric pipettor is overlarge in volume in the use process, and the electric pipettor is large in difference due to different sizes of different specifications, so that the problems of single installation mode and overlarge interval between side-by-side installation and use gun heads are caused.

Disclosure of Invention

The embodiment of the utility model aims to provide an electric pipette, which solves the technical problems that the prior electric pipette has overlarge volume and large difference due to different sizes of different specifications in the use process, so that the installation mode is single, and the interval between gun heads for side-by-side installation is overlarge.

The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows:

provided is an electric pipette including:

the liquid storage piece comprises a pipette and a suction pipe, wherein the suction pipe is hollowed out, a suction port is formed in the pipette, and the suction port is communicated with the suction pipe;

the movable piece is accommodated in the suction pipe in a sliding way, and one end of the movable piece is tightly attached to the inner wall of the suction pipe;

the driving piece is connected with the other end of the moving piece to drive the moving piece to slide up and down in the suction pipe.

In some embodiments, the drive member comprises a first motor, a first gear and a drive belt;

the moving piece comprises a second gear, a ball screw and a supporting seat;

the first motor is connected with the first gear;

the second gear is connected with the ball screw, and the supporting seat is arranged on the ball screw;

the first gear and the second gear are both sleeved on the transmission belt.

In some embodiments, the mover further comprises a sliding cylinder;

one end of the sliding cylinder is connected with the supporting seat, and the other end of the sliding cylinder is slidably accommodated in the suction pipe.

In some embodiments, the sliding cylinder further comprises a sealing ring sleeved in the sliding cylinder, and when the sliding cylinder is accommodated in the suction pipe, the sealing ring is tightly attached to the inner wall of the suction pipe.

In some embodiments, the device further comprises a housing, wherein the liquid storage member, the moving member and the driving member are all accommodated in the housing;

wherein, the week side of supporting seat with the casing butt.

In some embodiments, the sealing ring is made of silica gel.

In some embodiments, the pipette is conical in shape.

In some embodiments, the device further comprises two sensors, wherein the two sensors are respectively arranged at two ends of the moving piece.

Compared with the prior art, in the electric liquid dispenser provided by the embodiment of the utility model, when the electric liquid dispenser is used for transferring liquid, the electric liquid dispenser is driven by an external moving mechanism (such as a triaxial linear moving platform) so that the electric liquid dispenser is positioned right above an original container, and then the vertical height of the electric liquid dispenser is adjusted so that the suction part of the liquid storage part stretches into the liquid to be transferred. At this time, the driving piece is started, and the driving piece can drive the moving piece to slide up and down in the suction pipe so as to extract air in the suction pipe. The driving piece is connected with the moving piece, the moving piece is accommodated in the suction pipe in a sliding mode, and the driving piece drives the moving piece to slide up and down in the suction pipe so as to extract liquid. Through such setting, very big reduction the volume of electronic pipettor for the installation of electronic pipettor is more portable and has more multiple mounting means.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic view of an electric pipette according to an embodiment of the present utility model;

FIG. 2 is a front view of an electric pipette according to one embodiment of the present utility model;

FIG. 3 is a schematic view of a moving member of an electric pipette according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a liquid storage member of an electric liquid dispenser according to an embodiment of the present utility model.

Reference numerals:

100. an electric pipette; 10. a liquid storage member; 101. a pipette; 1011. a suction port; 102. a suction tube; 20. a moving member; 201. a second gear; 202. a ball screw; 203. a support base; 204. a sliding cylinder; 2041. a seal ring; 30. a driving member; 301. a first motor; 302. a first gear; 303. a transmission belt; 40. a housing; 50. a sensor.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "left," "right," "upper," "lower," "top," and "bottom," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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 in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In an embodiment of the present utility model, the electric pipettor may be used to remove liquid, specifically, the liquid in the original container is removed into another container by the electric pipettor.

The electric pipettor and the electric pipettor thereof provided by the embodiment of the utility model are described in detail below by specific embodiments with reference to fig. 1 to 4.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4 together, fig. 1 is a schematic structural diagram of an electric pipette according to an embodiment of the present utility model; FIG. 2 is a front view of an electric pipette according to one embodiment of the present utility model; FIG. 3 is a schematic view of a moving member of an electric pipette according to an embodiment of the present utility model; fig. 4 is a schematic structural diagram of a liquid storage member of an electric liquid dispenser according to an embodiment of the present utility model. An electric pipette 100 according to an embodiment of the present utility model includes a liquid storage member 10, a moving member 20 and a driving member 30. The liquid storage piece 10 comprises a pipette 101 and a suction tube 102, wherein the suction tube 102 is hollowed out, the pipette 101 is provided with a suction port 1011, and the suction port 1011 is communicated with the suction tube 102; one end of the moving member 20 is slidably received in the suction pipe 102, and the moving member 20 is closely attached to the inner wall of the suction pipe 102; the driving member 30 is connected to the other end of the moving member 20 to drive the moving member 20 to slide up and down in the suction tube 102.

With respect to the liquid storage member 10 described above, the liquid storage member 10 includes the pipette 101 and the suction tube 102, and the pipette 101 and the suction tube 102 communicate with each other. Wherein, the pipette 101 is provided with a suction port 1011, when the electric pipette 100 pumps and transfers the liquid in the container, the suction port 1011 of the pipette 101 stretches into the container, and the liquid enters the pipette 101 through the suction port 1011 and is stored; when the extracted liquid is required to be transferred into another container, the electric pipettor 100 drives the liquid storage part 10 to move to the position right above the other container, so that the position of the liquid storage part 10 corresponds to the position of the other container, and then the liquid stored in the pipette 101 can be transferred into the other container through the suction port 1011.

Specifically, when the liquid in the container is drawn through the liquid storage member 10, the moving member 20 moves upward in the vertical direction in the suction tube 102 to suck the gas in the pipette 101, so that a negative pressure is formed in the pipette 101, thereby achieving the purpose of drawing the liquid in the container into the pipette 101. When the liquid is sucked into the pipette 101, the air pressure is balanced, and the liquid is not sucked again, and the sucked liquid is stored in the pipette 101. When it is then desired to drain the liquid in the pipette 101 into another container, a downward force may be applied to the suction tube 102 by the moving member 20, where the moving member 20 moves downward in a vertical direction, thereby allowing the liquid stored in the pipette 101 to be drained.

Since the electric pipettor 100 is generally used in the fields of biology, chemistry, etc., to withdraw and move a liquid used for an experiment, the liquid used for the experiment has a certain corrosiveness. The material used for the liquid storage member 10 may be a corrosion resistant material, for example: stainless steel, titanium alloy, etc.; to prevent corrosive liquids from volatilizing into the suction tube 102 and causing corrosion damage, the suction tube 102 may be formed of a corrosion resistant material, such as a PTFE (polytetrafluoroethylene) material.

With respect to the driving member 30, the driving member 30 is connected to the moving member 20, and when the driving member 30 is started, the driving member 30 can drive the moving member 20 to rotate. The movable member 20 is then able to slide up and down in the suction tube 102 to draw and discharge the liquid.

With respect to the moving member 20 described above, the moving member 20 is closely attached to the inner wall of the suction duct 102 so that the outside air does not enter the suction duct 102 through the gap between the moving member 20 and the suction duct 102.

When the electric pipettor 100 is used for pipetting liquid, the electric pipettor 100 is driven by an external moving mechanism (for example, a triaxial linear moving platform) so that the electric pipettor 100 is positioned right above an original container, and then the vertical height of the electric pipettor 100 is adjusted so that the suction part of the liquid storage part 10 stretches into the liquid to be pipetted. At this time, the driving member 30 is started, and the driving member 30 can drive the moving member 20 to slide up and down in the suction tube 102, so as to draw air in the suction tube 102 to form negative pressure. The driving member 30 is connected to the moving member 20, the moving member 20 is slidably received in the suction tube 102, and the driving member 30 drives the moving member 20 to slide up and down in the suction tube 102, so that liquid can be extracted. By such arrangement, the volume of the electric pipette 100 is greatly reduced, so that the electric pipette 100 is more portable and has more various mounting modes.

Regarding the three-axis linear moving platform, the electric pipettor 100 is mounted on the three-axis linear moving platform, and the three-axis linear moving platform drives the electric pipettor 100 to move in the horizontal direction and the vertical direction, so that the electric pipettor 100 can stretch into liquid and extract the liquid, and can horizontally move after the liquid is extracted to discharge the liquid into another container. The triaxial linear motion platform can adopt a device commonly available in the market.

In some embodiments, the drive 30 includes a first motor 301, a first gear 302, and a drive belt 303; the moving member 20 includes a second gear 201, a ball screw 202, and a support base 203; the first motor 301 is connected with the first gear 302; the second gear 201 is connected with the ball screw 202, and the supporting seat 203 is arranged on the ball screw 202; the first gear 302 and the second gear 201 are both sleeved on the driving belt 303.

The driving member 30 includes a first motor 301, and the first motor 301 is connected to a first gear 302. When the first motor 301 is started, the first motor 301 can drive the first gear 302 to synchronously rotate. The first gear 302 is in transmission connection with the second gear 201 through a transmission belt 303, and when the first gear 302 rotates, the second gear 201 can rotate along with the first gear 302 through the transmission belt 303. The second gear 201 is connected with the ball screw 202, and the ball screw 202 is provided with a supporting seat 203, and when the second gear 201 rotates, the ball screw 202 can convert the rotation motion into the linear motion, so that the supporting seat 203 arranged on the ball screw 202 can do the linear motion. Through the arrangement, the first motor 301 drives the first gear 302 to rotate, and after the first gear 302 drives the second gear 201 to rotate through the transmission belt 303, the ball screw 202 clamped with the second gear 201 converts the rotary motion into the linear motion, so that the supporting seat 203 can do the linear motion along the ball screw 202. And further, the volume of the electric pipettor 100 is reduced, so that the electric pipettor 100 is more convenient to assemble and disassemble and has more mounting modes.

Specifically, the ball screw consists of a screw, a nut, a steel ball, a pre-pressing sheet, a reverser and a dust remover.

In some embodiments, the mover 20 further comprises a sliding cylinder 204; one end of the sliding tube 204 is connected to the support base 203, and the other end is slidably received in the suction tube 102.

The slide tube 204 is accommodated in the suction tube 102, and the slide tube 204 is connected to the support base 203. When the support seat 203 moves linearly on the ball screw 202, the support seat 203 can drive the sliding cylinder 204 to slide in the suction tube 102. And thus the slide tube 204 can be made to suck air in the suction tube 102, so that the suction port 1011 can suck liquid into the pipette 101.

Since the electric pipettor 100 is generally used in the fields of biology, chemistry, etc. to withdraw and move a liquid, the liquid used for the experimental liquid has a certain corrosiveness. To prevent corrosive liquids from volatilizing into the sliding cylinder 204 and causing corrosion damage, the sliding cylinder 204 may be made of a corrosion resistant material, such as stainless steel or ceramic material.

In some embodiments, the sliding tube 204 further includes a sealing ring 2041, the sealing ring 2041 is sleeved in the sliding tube 204, and when the sliding tube 204 is accommodated in the suction tube 102, the sealing ring 2041 is tightly attached to the inner wall of the suction tube 102. A seal ring 2041 is provided on the outer peripheral side of the slide tube 204, one side of the seal ring 2041 is tightly fitted to the slide tube 204, and the other side is tightly fitted to the inner wall of the suction tube 102. With this arrangement, outside air is prevented from entering the suction tube 102 through the gap between the slide tube 204 and the suction tube 102, and liquid cannot be extracted.

In some embodiments, the electric pipette 100 further comprises a housing 40, wherein the liquid storage member 10, the moving member 20 and the driving member 30 are all accommodated in the housing 40; wherein the peripheral side of the support base 203 is in contact with the housing 40. The housing 40 can protect the liquid storage member 10, the moving member 20, and the driving member 30. Further, the circumferential side of the support base 203 abuts against the housing 40, and when the support base 203 moves linearly on the ball screw 202, the support base 203 can be prevented from rotating around the rod during the linear movement.

In some embodiments, the sealing ring 2041 is made of silica gel. The seal 2041 has wear resistance. The seal 2041 is tightly attached to the inner wall of the suction pipe 102, and when the support seat 203 moves up and down in the suction pipe 102, the silica gel seal 2041 can reduce energy loss caused by abrasion, and the service life of the seal 2041 can be prolonged. In addition, the silica gel material also has better sealing performance, tensile resistance, corona resistance, arc resistance, high and low temperature resistance, ageing resistance, high temperature resistance and the like.

In some embodiments, the pipette 101 is conical in shape. The conical pipette 101 has a smaller volume to avoid tipping of the original container by the pipette 101 touching the original container when the liquid is removed.

In some embodiments, the electric pipette 100 further includes two sensors 50, and the two sensors 50 are disposed at two ends of the moving member 20, respectively. The sensor 50 can receive the moving distance of the moving member 20 in the suction tube 102, so as to prevent the phenomenon that the moving distance of the moving member 20 in the suction tube 102 is too long or too short, resulting in insufficient or excessive liquid extraction.

It should be specifically noted that, the electric pipette 100 provided in the embodiment of the present utility model only shows a portion related to the technical problem to be solved in the embodiment of the present utility model, and it is understood that the electric pipette 100 provided in the embodiment of the present utility model further includes other structures for implementing the functions of the electric pipette 100, including, but not limited to, a power supply mechanism, a positioning mechanism, and the like.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity; while the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. An electric pipette, comprising:

2. The motorized pipette of claim 1 wherein the drive member comprises a first motor, a first gear and a drive belt;

the moving piece comprises a second gear, a ball screw and a supporting seat;

the first motor is connected with the first gear;

the first gear and the second gear are both sleeved on the transmission belt.

3. The motorized pipette of claim 2 wherein the displacement member further comprises a sliding cylinder;

4. The motorized pipette of claim 3 wherein the slide tube further comprises a sealing ring which is sleeved in the slide tube and which is in close contact with the inner wall of the suction tube when the slide tube is received in the suction tube.

5. The motorized pipette of claim 4, further comprising a housing, wherein the reservoir, the moving member, and the driving member are all housed within the housing;

wherein, the week side of supporting seat with the casing butt.

6. The electric pipette of claim 4 wherein the sealing ring is made of silica gel.

7. The motorized pipette of claim 1, wherein the pipette is conical in shape.

8. The electric pipette of claim 1 further comprising two sensors, two of said sensors being disposed at respective ends of said movable member.