CN218795993U

CN218795993U - Quantitative electric liquid transfer device

Info

Publication number: CN218795993U
Application number: CN202221797610.5U
Authority: CN
Inventors: 熊凯; 杨雪琴; 王东
Original assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Current assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-04-07
Anticipated expiration: 2032-07-12

Abstract

The utility model provides an electronic pipettor of ration, include: the shell is in a pistol shape and comprises a pistol head part, a pistol tube part and a handle part; the thread part is arranged on the gun head part; the range adjusting ring is detachably connected with the threaded part; the measuring range adjusting rings are multiple; the pipetting quantity input panel is arranged in the middle of the top surface of the gun barrel part and comprises a display screen and a pipetting quantity input key; the power switch is arranged at the tail end of the gun barrel part; the liquid sucking button and the liquid discharging button are both arranged on the handle part. The utility model discloses can solve when a large amount of liquid are absorbed to needs, be the fixed value because of the bore size of male pipette, can lead to moving the lower technical problem of liquid efficiency.

Description

Quantitative electric liquid transfer device

Technical Field

The utility model relates to a biomedical experiment technical field, concretely relates to electronic pipettor of ration.

Background

In the course of carrying out biomedical experiments, when needing to absorb more liquid in the laboratory, often adopt large capacity electronic pipettor, for example absorb culture medium on the superclean bench between the cell.

In the prior art, CN214636507U provides a dual-mode electric pipette, which includes a pistol-shaped housing, the upper portion of the housing has a hollow cavity, and the lower portion has a hollow handle; the cavity is sequentially divided into an element cavity, a sealing cavity and a liquid inlet and outlet cavity, wherein a motor is arranged in the element cavity, a piston is arranged in the sealing cavity, and the piston is connected with the motor; a battery and a control which are connected are arranged inside the handle, the control is also connected with the motor, a liquid suction control key and a liquid discharge control key, and one end of each of the liquid suction control key and the liquid discharge control key extends to the outside of the handle; the shell is provided with a control area and a display area. The utility model provides a double mode electronic pipettor realizes an electronic pipettor that has ordinary and fixed double mode through adding control element, solves traditional pipetting gun and causes the unsafe problem of precision when sucking fixed quantity liquid such as cross-suction easily.

However, in the above technical solution, the caliber of the pipette into which the electric pipette can be inserted is a fixed value, and when a large amount of liquid needs to be sucked, the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ration electronic pipettor to the not enough of prior art existence to when solving the needs and absorbing a large amount of liquid that exist among the prior art, be the fixed value because of the bore size of male pipette, can lead to moving the lower technical problem of liquid efficiency.

The utility model discloses a technical scheme be, an electronic pipettor of ration, include:

the shell is in a pistol shape and comprises a pistol head part, a pistol tube part and a handle part;

the thread part is arranged on the gun head part;

the range adjusting ring is detachably connected with the threaded part; the measuring range adjusting rings are multiple;

the pipetting quantity input panel is arranged in the middle of the top surface of the gun barrel part and comprises a display screen and pipetting quantity input keys;

the power switch is arranged at the tail end of the gun barrel part;

the liquid suction button and the liquid discharge button are both arranged on the handle part.

In one embodiment, the range adjusting ring is a cone without a cone tip, and the top of the cone is a through hole.

In one embodiment, the gun head part is provided with a pipette connecting port, the pipette connecting port is hermetically connected with the hollow cavity of the gun head part, and one end of the pipette connecting port, which is inserted into the pipette, is provided with an elastic sealing ring.

In one embodiment, the device further comprises a piston, a piston rod, a linkage device, a motor and a screw rod;

the piston is arranged in the hollow cavity of the gun barrel part and is contacted with the bottom of the pipette connecting port;

the piston rod is arranged in the hollow cavity of the gun barrel part and is connected with the piston;

the linkage device is connected with the piston rod;

the motor is arranged in the hollow cavity of the handle part;

the screw rod is respectively connected with the motor and the linkage device.

In one embodiment, the method further comprises the following steps: the fixed rod is arranged in the inner cavity of the handle part and beside the motor;

the bracing piece is located the bottom of handle portion, the below of dead lever.

According to the above technical scheme, the utility model discloses a beneficial technological effect as follows:

the ration electron pipettor that this embodiment provided can select the pipette of different diameters and the range control circle that matches with this pipette according to the volume of required suction liquid how much, can realize selecting the pipette of major diameter for use at the liquid that the suction volume is many, makes under the prerequisite of guaranteeing to move liquid range precision move liquid efficiency higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic external view of a pipette according to an embodiment of the present invention;

fig. 2 is an internal structure view of the pipette according to the embodiment of the present invention;

reference numerals:

1-display screen, 2-liquid-transfer amount input key, 3-thread part, 4-range adjusting ring, 5-liquid-sucking button, 6-liquid-discharging button, 7-power switch, 8-piston rod, 9-linkage device, 10-piston, 11-pipette connecting port, 12-motor, 13-fixing rod and 14-supporting rod.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Examples

The present embodiment provides a quantitative electric pipette, as shown in fig. 1, including:

a threaded portion 3 provided in the gun head; in a specific embodiment, the threaded portion is a hollow ring shape, and the threads are arranged on the inner wall of the hollow ring shape.

And the range adjusting ring 4 is detachably connected with the threaded part 3, and the connection mode can be selected through threaded connection. As shown in fig. 1, the range adjustment ring has a conical shape without a conical tip, and the top of the conical shape has a through hole through which the pipette can pass. In a specific embodiment, the pipette is a hollow glass tube with two open ends, and the length of the pipette is 20-30cm; the diameters of the pipettes are different in thickness and thickness, and in the embodiment, the volumes of the pipettes are respectively 5ml, 10ml, 25ml and 50ml, and by changing the diameter of the through hole at the conical top, the range adjusting rings with different specifications can be obtained and are respectively 5ml, 10ml, 25ml and 50ml. The through hole of each range adjusting ring can just accommodate pipettes with the capacities of 5ml, 10ml, 25ml and 50ml to pass through.

The pipetting quantity input panel is arranged in the middle of the top surface of the gun barrel part and comprises a display screen 1 and a pipetting quantity input key 2, the required pipetting quantity is input through the pipetting quantity input key, and the set pipetting quantity is displayed on the display screen; pressing OK/R key to confirm the adjusted liquid transferring amount; if the input is wrong, the OK/R key is pressed again, and the operation can be reset and operated again.

And the power switch 7 is arranged at the tail end of the gun tube part and is used for controlling the whole electric pipettor to be turned on or turned off.

And the liquid suction button 5 is arranged on the handle part and is used for controlling the electric pipettor to suck liquid through the pipette.

And the liquid discharging button 6 is arranged on the handle part and used for controlling the electric pipettor to discharge liquid through the pipette.

The internal structure of the quantitative electric pipette provided by the embodiment is shown in fig. 2, and specifically comprises the following components:

the gun head is provided with a pipette connecting port 11, the pipette connecting port 11 is hermetically connected with the hollow cavity of the gun barrel, and one end, facing the gun head and inserted into the pipette, of the pipette connecting port 11 is provided with an elastic sealing ring for clamping the pipette inserted into the pipette; the sealing ring is elastically contractible and is suitable for pipettes of various specifications.

A piston 10 disposed in the hollow cavity of the barrel portion and contacting the bottom of the pipette connection port 11; when the pipette is not in operation, the piston 10 is in contact with the bottom of the pipette connection port 11.

The piston rod 8 is arranged in the hollow cavity of the gun barrel part and is connected with the piston 10, and the linkage device 9 is connected with the piston rod 8.

The motor 12 is arranged in the hollow cavity of the handle part; the screw 15 is respectively connected with the motor 12 and the linkage 9. The form of linkage is not limited, in a specific embodiment, the linkage can be a crankshaft linkage, when the liquid suction button 5 or the liquid discharge button 6 is pressed, the motor 12 starts to work to drive the screw 15 to rotate, and then the piston rod 8 and the piston 10 are driven to move backwards through the linkage 9 to generate negative pressure to start liquid suction.

And the fixing rod 13 is arranged in the inner cavity of the handle part and beside the motor 12 and is used for fixing the motor 12 and reducing the influence of vibration generated by the motor during rotation on other parts.

And a support rod 14 arranged at the bottom end of the handle part and below the fixing rod 13 and used for supporting the fixing rod 13.

The working principle of the present embodiment is explained in detail as follows:

the quantitative electric pipettor provided by the embodiment can be operated by one hand, when in use, the power switch 7 is firstly pressed to start, then the liquid is sucked according to the requirement, the proper range adjusting ring 4 is selected, the range adjusting ring 4 is connected with the thread part 3, and then the pipettor is inserted into the pipette connecting port 11.

The required amount of liquid to be transferred is input by using the input key 2 of the amount of liquid to be transferred, whether the numerical value of the amount of liquid to be transferred displayed is correct or not is confirmed on the display 1, and the confirmation is correct when the OK/R key is pressed, so that the liquid transfer operation can be carried out. The pipette is pushed down to the liquid level and the liquid suction button 5 is pressed to start the liquid suction.

When the liquid is discharged, the liquid in the pipette can be completely discharged only by pressing the liquid discharge button 6. In one embodiment, if the amount of liquid transferred is manually controlled without setting the transfer volume, the aspirate liquid button 5 may be pressed for a long time.

The ration electron pipettor that this embodiment provided can select the pipette of different diameters and the range control circle that matches with this pipette according to what the required suction liquid volume, can realize selecting the pipette of major diameter for use at the liquid that the volume of taking is many, makes under the prerequisite of guaranteeing to move liquid range precision and moves liquid efficiency higher.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A quantitative electric pipette, comprising:

a housing, the housing being pistol-shaped, including a barrel portion, and a handle portion;

a threaded portion (3) provided in the gun head;

the range adjusting ring (4) is detachably connected with the thread part (3); a plurality of range adjusting rings (4) are arranged;

the pipetting quantity input panel is arranged in the middle of the top surface of the gun barrel part and comprises a display screen (1) and a pipetting quantity input key (2);

a power switch (7) arranged at the tail end of the gun barrel part;

a liquid suction button (5) and a liquid discharge button (6) both provided on the handle portion.

2. The metered dose electric pipette of claim 1, wherein the range adjustment ring is conical without a conical tip, the conical tip being a through hole.

3. The quantitative electric pipette according to claim 1, wherein the gun head is provided with a pipette connecting port (11), the pipette connecting port (11) is hermetically connected with the hollow cavity of the gun barrel, and an elastic sealing ring is arranged at one end of the pipette connecting port (11) inserted into the pipette.

4. A quantitative electric pipette according to claim 3, further comprising a piston (10), a piston rod (8), a linkage (9), a motor (12) and a screw (15);

the piston (10) is arranged in a hollow cavity of the gun barrel part and is in contact with the bottom of the pipette connecting port (11);

the piston rod (8) is arranged in a hollow cavity of the gun barrel part and is connected with the piston (10);

the linkage device (9) is connected with the piston rod (8);

the motor (12) is arranged in the hollow cavity of the handle part;

the screw (15) is respectively connected with the motor (12) and the linkage device (9).

5. The quantitative electric pipette of claim 4, further comprising:

the fixed rod (13) is arranged in the inner cavity of the handle part and beside the motor (12);

and the supporting rod (14) is arranged at the bottom end of the handle part and below the fixing rod (13).