CN214636507U

CN214636507U - Dual-mode electric pipettor

Info

Publication number: CN214636507U
Application number: CN202022538353.0U
Authority: CN
Inventors: 孙振华; 吴锡
Original assignee: Guangzhou Nansha Prikang Biomedical Technology Co ltd
Current assignee: Guangzhou Nansha Prikang Biomedical Technology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-11-09
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a dual-mode electric pipette. The pipette comprises a pistol-shaped casing, the upper part of the casing has a hollow cavity, and the lower part has a hollow handle; A motor is installed inside the chamber, a piston is installed inside the sealed chamber, and the piston is connected with the motor; a battery and a control are connected inside the handle, and the control is also connected with the motor, a suction control key and A liquid discharge control key is connected, and one end of the liquid suction control key and the liquid discharge control key both extend to the outside of the handle; a control area and a display area are arranged on the shell. The dual-mode electric pipette in the utility model realizes an electric pipette with common and fixed dual modes by adding control elements, and solves the problem of inaccurate precision when the traditional pipetting gun is likely to cause over-suction and the like when sucking a fixed amount of liquid. question.

Description

Dual-mode electric pipettor

Technical Field

The utility model relates to a precision instruments field, in particular to dual mode electronic pipettor.

Background

Pipettes are precision instruments used in the fields of medicine, biology, and the like, and are commonly used for pipetting and mixing liquids. Along with the development of science and technology, traditional manual pipettor is replaced gradually to the electronic pipettor, compares with manual pipettor, and the electronic pipettor has higher precision and work efficiency.

The air pressure in the air flue is adjusted to current electronic pipette usually adopts the motor to drive the piston motion, realizes the suction and blow off of liquid, specifically, when using electronic pipettor, through inhaling, the tapping button of operating handle department, can drive the controlling part control motor, the motor drive piston makes liquid continuously inhale or emit.

However, although the electric pipette has the advantages of high working efficiency, capability of sucking any liquid amount in the maximum range, and the like, when sucking a fixed amount of liquid, the electric pipette cannot be started or stopped in time by operating in a manual control key mode, so that the accuracy of operation and the precision of liquid taking amount are difficult to control, and over-suction and other consequences are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a double mode electronic pipettor.

According to one aspect of the present invention, there is provided a dual mode electric pipette comprising a pistol-shaped housing having a hollow cavity in an upper portion and a hollow handle in a lower portion;

the cavity is sequentially divided into an element cavity, a sealing cavity and a liquid inlet and outlet cavity, 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 ends of the liquid suction control key and the liquid discharge control key extend 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.

In some embodiments, the bottom of the fluid access chamber has a fluid access port. Thus, liquid can be sucked and discharged through the liquid inlet and outlet.

In some embodiments, the chamber has a partition therein, the partition separating the element chamber and the seal chamber, and the piston separating the seal chamber and the inlet and outlet chambers. Thus, the specific separation mode of the cavity is numerically controlled.

In some embodiments, the liquid suction control key and the liquid discharge control key are located side by side above and below the cavity. Thus, the positions of the liquid suction control key and the liquid discharge control key are numerically controlled.

In some embodiments, the control region and the display region are both located outside of the element chamber, wherein the control region is located outside of the side ends of the element chamber and the display region is located outside of the top of the element chamber. From this, set up the concrete position of control area and display area, wherein the position of control area can conveniently control when handheld, and the position of display area then can conveniently observe.

In some embodiments, the control area includes a mode adjustment key, a range adjustment key, a suction adjustment key, and a discharge adjustment key. Thereby, a specific structure of the control area is set.

In some embodiments, a fixed mode control element and a common mode control element are mounted in the element chamber, both of which are wirelessly connected to the control and are controlled by the mode adjustment key. Thus, the mode adjusting key can control each element to change different modes through the switch.

In some embodiments, a wireless receiving element is installed on the control, and both the fixed mode control element and the common mode control element are wirelessly connected with the wireless receiving element. Therefore, the control receives the mode conversion signal through the wireless receiving element, and further controls the motor, the piston and the like to suck and discharge liquid.

In some embodiments, the display area comprises a fixed mode display screen, a normal mode display screen, a power display screen, a pipetting value display screen, a pipetting force display screen, and a tapping force display screen. Thereby, a specific structure of the display area is set.

Drawings

Fig. 1 is a schematic external structural view of a dual-mode electric pipette according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the control area shown in FIG. 1;

FIG. 3 is a schematic structural diagram of the display region shown in FIG. 1;

fig. 4 is a schematic cross-sectional view of the dual mode electric pipette of fig. 1;

FIG. 5 is a schematic view of a portion of the chamber shown in FIG. 4;

FIG. 6 is a second schematic view of a portion of the chamber shown in FIG. 4;

fig. 7 is a schematic structural view of the handle shown in fig. 4.

In the figure: the device comprises a shell 1, a cavity 2, a handle 3, a motor 4, a piston 5, a control area 6, a display area 7, a fixed mode control element 8, a common mode control element 9, an element cavity 21, a sealing cavity 22, a liquid inlet and outlet cavity 23, a liquid inlet and outlet 24, a partition plate 25, a battery 31, a control 32, a liquid suction control key 33, a liquid discharge control key 34, a wireless receiving element 35, a mode adjusting key 61, a range adjusting key 62, a liquid suction adjusting key 63, a liquid discharge adjusting key 64, a fixed mode display screen 71, a common mode display screen 72, an electric quantity display screen 73, a liquid discharge numerical value display screen 74, a liquid suction strength display screen 75 and a liquid discharge strength display screen 76.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a structure of a dual mode electric pipette according to an embodiment of the present invention, fig. 2 shows a structure of a control region in fig. 1, fig. 3 shows a structure of a display region in fig. 1, fig. 4 shows a sectional structure of the dual mode electric pipette in fig. 1, fig. 5 shows one of structures of a cavity in fig. 4, fig. 6 shows another partial structure of the cavity in fig. 4, and fig. 7 shows a structure of a handle in fig. 4. As shown in fig. 1-7, the pipette includes a pistol-shaped housing 1, with various other structures being provided on or within the housing 1. Wherein the upper part of the casing 1, i.e. the barrel part, has a hollow cavity 2 and the lower part of the casing 1, i.e. the grip part, has a hollow handle 3.

The cavity 2 is sequentially divided into an element chamber 21, a sealing chamber 22 and a liquid inlet and outlet chamber 23, wherein the cavity 2 is provided with a partition plate 25, the element chamber 21 and the sealing chamber 22 are divided by the partition plate 25, a piston 5 is arranged in the sealing chamber 22, and the sealing chamber 22 and the liquid inlet and outlet chamber 23 are divided by the piston 5, so that the volumes of the two chambers can be changed.

A motor 4 is mounted inside the element chamber 21, and a rotating rod of the motor 4 penetrates the partition plate 25 and is connected to the piston 5. And a liquid inlet and outlet port 24 is provided at the bottom of the liquid inlet and outlet chamber 23.

The handle 3 is internally provided with a battery 31 and a control 32 which are connected, and the control 32 is connected with the motor 4 in the element chamber 21. The battery 31 can supply power to the control 32, and the control 32 can control the operation and stop of the motor 4, so as to drive the piston 5 to move.

In addition, a liquid suction control key 33 and a liquid discharge control key 34 are further installed at the trigger part of the handle 3, and the liquid suction control key 33 and the liquid discharge control key 34 are located below the cavity 2 in an up-and-down side-by-side mode. And one end of the liquid suction control key 33 and one end of the liquid discharge control key 34 both extend into the handle 3 and are connected with the control 32, and the other end of the liquid suction control key and the other end of the liquid discharge control key both extend out of the handle 3. When the user presses the end of the liquid suction control key 33 or the end of the liquid discharge control key 34 exposed outside, the control 32 is affected, and the operation of the motor 4 and the piston 5 is controlled.

A control area 6 and a display area 7 are also provided on the housing 1. Wherein, the control area 6 is positioned outside the side end of the element chamber 21, and the position can facilitate key control; and the display area 7 is located outside the top of the element chamber 21 in a position that allows easy viewing.

The control section 6 includes a mode adjustment key 61, a range adjustment key 62, a suction adjustment key 63, and a discharge adjustment key 64. Mode adjustment key 61 is the circular button, presses this key and can adjust between ordinary mode and fixed mode, and wherein, ordinary mode is the conventional mode of arbitrary liquid volume of absorption, and fixed mode then does the utility model discloses the mode of the fixed liquid volume is absorbed to peculiar accuracy. In different modes, the adjustment should be performed by selecting appropriate keys among the span adjustment key 62, the suction adjustment key 63, and the tapping adjustment key 64.

In addition, a fixed mode control element 8 and a common mode control element 9 are installed in the element chamber 21 inside the control area 6, and both the fixed mode control element 8 and the common mode control element 9 are connected to the mode switch and also wirelessly connected to the control 32. Both the fixed mode control element 8 and the normal mode control element 9 are controlled by the mode adjustment key 61 to send command signals to the control 32.

Preferably, the control 32 is provided with a wireless receiving element 35, and the fixed mode control element 8 and the common mode control element 9 are both wirelessly connected with the wireless receiving element 35.

The range adjusting key 62, the liquid suction adjusting key 63 and the liquid discharge adjusting key 64 are all long keys, one end of which is marked with plus sign, and the other end of which is marked with minus sign. Wherein, the range adjusting key 62 is used for adjusting the liquid discharging amount in the fixed mode, and the liquid suction adjusting key 63 and the liquid discharging adjusting key 64 are respectively used for adjusting the liquid suction and liquid discharging force in the normal mode.

Preferably, in order to avoid the operation error, it is also possible to provide that the range adjustment key 62 is not operated in the normal mode, and the suction force adjustment key 63 and the tapping force adjustment key 64 are not operated in the fixed mode.

The display area 7 includes a fixed mode display screen 71, a common mode display screen 72, an electric quantity display screen 73, a liquid-transferring numerical value display screen 74, a liquid-absorbing strength display screen 75 and a liquid-discharging strength display screen 76, each of which is used for displaying the current mode state and related parameters. The fixed mode display screen 71 is used for displaying that the liquid is currently in a fixed mode state, the common mode display screen 72 is used for displaying that the liquid is currently in a common mode state, the electric quantity display screen 73 is used for displaying the current electric quantity of the battery 31, the liquid transfer numerical value display screen 74 is used for displaying the current liquid transfer amount, and the liquid suction strength display screen 75 and the liquid discharge strength display screen 76 are respectively used for displaying the current liquid suction or liquid discharge working condition.

When the pipette is used in the normal mode, the normal mode control element 9 is connected to the wireless receiving element 35 and the fixed mode control element 8 is disconnected from the wireless receiving element 35 by pressing the mode adjustment key 61 to adjust to the normal mode, and the normal mode display screen 72 displays "NOMAL" at this time. Then, the liquid suction or the liquid discharge can be performed by continuously pressing the liquid suction control key 33 or the liquid discharge control key 34, and the force of the liquid suction or the liquid discharge can be adjusted by the liquid suction force adjusting key 63 or the liquid discharge force adjusting key 64 to suck any desired amount of liquid.

When the mode adjustment key 61 is pressed to adjust to the fixed mode in the use of the pipette, the fixed mode control element 8 is connected to the wireless receiving element 35, the normal mode control element 9 is disconnected from the wireless receiving element 35, and the fixed mode display screen 71 displays "ratio". Then, it is possible to suck or discharge liquid by continuously pressing the liquid suction control key 33 or the liquid discharge control key 34, while the amount of suction or discharge liquid can be adjusted by the span adjustment key 62 to accurately suck a fixed amount of liquid.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A dual mode electric pipette characterized by: comprises a pistol-shaped shell (1), wherein the upper part of the shell (1) is provided with a hollow cavity (2), and the lower part is provided with a hollow handle (3);

the cavity (2) is sequentially divided into an element chamber (21), a sealing chamber (22) and a liquid inlet and outlet chamber (23), a motor (4) is installed in the element chamber (21), a piston (5) is installed in the sealing chamber (22), and the piston (5) is connected with the motor (4);

a battery (31) and a control (32) which are connected are installed inside the handle (3), the control (32) is further connected with the motor (4), a liquid suction control key (33) and a liquid discharge control key (34), and one ends of the liquid suction control key (33) and the liquid discharge control key (34) extend to the outside of the handle (3);

the shell (1) is provided with a control area (6) and a display area (7).

2. A dual mode electric pipette as defined in claim 1 wherein: the bottom of the liquid inlet and outlet chamber (23) is provided with a liquid inlet and outlet (24).

3. A dual mode electric pipette as defined in claim 1 wherein: the cavity (2) is internally provided with a partition plate (25), the partition plate (25) separates the element chamber (21) from the sealing chamber (22), and the piston (5) separates the sealing chamber (22) from the liquid inlet and outlet chamber (23).

4. A dual mode electric pipette as defined in claim 1 wherein: the liquid suction control key (33) and the liquid discharge control key (34) are arranged below the cavity (2) in a vertical and side-by-side mode.

5. A dual mode electric pipette as defined in claim 1 wherein: the control area (6) and the display area (7) are located outside the element chamber (21), wherein the control area (6) is located outside the side end of the element chamber (21), and the display area (7) is located outside the top of the element chamber (21).

6. A dual mode electric pipette as defined in claim 5 wherein: the control area (6) comprises a mode adjusting key (61), a range adjusting key (62), a suction adjusting key (63) and a discharge adjusting key (64).

7. A dual mode electric pipette as defined in claim 6 wherein: a fixed mode control element (8) and a common mode control element (9) are installed in the element chamber (21), and the fixed mode control element (8) and the common mode control element (9) are both wirelessly connected with the control (32) and are both controlled by the mode adjusting key (61).

8. A dual mode electric pipette as defined in claim 7 wherein: and a wireless receiving element (35) is installed on the control (32), and the fixed mode control element (8) and the common mode control element (9) are both in wireless connection with the wireless receiving element (35).

9. A dual mode electric pipette as defined in claim 5 wherein: the display area (7) comprises a fixed mode display screen (71), a common mode display screen (72), an electric quantity display screen (73), a liquid transfer numerical value display screen (74), a liquid suction strength display screen (75) and a liquid discharge strength display screen (76).