Combined pipettor

Abstract

The utility model belongs to the technical field of experimental equipment, and particularly relates to a combined pipettor which comprises a machine body, a retaining ring, a connecting seat, connectors and suction tubes, the connecting seat is connected to the bottom of the machine body, the connectors are distributed at the bottom of the connecting seat at equal intervals, the suction tubes are connected with the connectors in an inserted mode, and the retaining ring is integrally formed at the top of the side wall of the machine body. The surface of the straw is movably sleeved with a fixing frame, a mounting seat is integrally formed on the side wall of the connecting seat, a vertical measuring instrument is mounted on the upper surface of the mounting seat, a positive electrode connecting disc is arranged at the bottom of an inner cavity of the vertical measuring instrument, an insulating ring is arranged at the edge of the upper surface of the positive electrode connecting disc, and a negative electrode connecting ring is fixedly connected to the upper surface of the insulating ring. Balls are movably arranged on the upper surface of the positive electrode connecting disc; when in use, the verticality of the pipettor can be detected, and an operator can be reminded when the pipettor inclines, so that the pipettor is always in a vertical state when in use, and the pipetting accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a combined liquid transfer device. Background Art

[0002] A pipette, also called a pipette gun, is a measuring tool that transfers liquid from an original container to another container within a certain range. It is widely used in biology, chemistry and other fields. Patent search found that the publication number: CN103447104B discloses a pipette, in which the lower stopper hits the operating end of the disassembly extension when the driving element and the driving device are disconnected by the disconnecting device, so that when the operating element continues to move in the operating direction, the disassembly extension causes the disassembly slide valve to move downward.

[0003] During use of the existing pipette, the straw needs to be pressed vertically into the liquid. During the operation, the operator needs to control the verticality of the pipette based on his or her operating experience and operating feel, which results in inaccurate control of the verticality of the pipette during operation, affecting the pipetting accuracy of the pipette. In order to solve the above problems, a combined pipette is proposed in the present application. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a combined pipette, which can detect the verticality of the pipette when in use, and can remind the operator when it is tilted, so that the pipette is always in a vertical state when in use, which can improve the accuracy of pipetting and solve the problems raised in the background technology.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a combined pipette, including a body, a buckle, a connection seat, a connection head and a straw, wherein the connection seat is connected to the bottom of the body, the connection heads are equidistantly distributed at the bottom of the connection seat, the straw is plugged into the connection head, the buckle is integrally formed at the top of the side wall of the body, and is characterized in that a fixed frame is movably sleeved on the surface of the straw;

[0008] The side wall of the connecting seat is integrally formed with a mounting seat, a vertical measuring instrument is installed on the upper surface of the mounting seat, a positive electrode connecting plate is provided at the bottom of the inner cavity of the vertical measuring instrument, an insulating ring is provided at the edge of the upper surface of the positive electrode connecting plate, a negative electrode connecting ring is fixedly connected to the upper surface of the insulating ring, and a ball is movably provided on the upper surface of the positive electrode connecting plate.

[0009] Preferably, the negative electrode connecting ring and the insulating ring abut against the inner wall of the vertical measuring instrument.

[0010] Preferably, an alarm is provided on the lower surface of the fixing frame, and the alarm is electrically connected to the negative electrode connecting ring through a wire.

[0011] Preferably, through holes are provided on the surface of the fixing frame, the through holes are distributed equidistantly, and the through holes correspond to the positions of the straws.

[0012] Preferably, the fixing frame is composed of a plurality of component seats, and the through holes are distributed on the surface of the component seats.

[0013] Preferably, a splicing seat is provided on one end surface of the split seat, and a splicing groove is integrally formed on one end surface of the split seat away from the splicing seat, and the splicing groove is snap-connected with the splicing seat.

[0014] Preferably, a handle is integrally formed on the middle surface of the fixing frame, and the handle is in a letter-shaped structure.

[0015] The above technical solution of the utility model has the following beneficial technical effects:

[0016] 1. In the utility model, when aspirating liquid through a pipette, the ball in the vertical measuring instrument moves on the surface of the positive electrode connecting plate, and the ball is electrically connected to the positive electrode connecting plate. When the body is tilted, the ball moves downward, and when the ball abuts against the negative electrode connecting ring, the positive electrode connecting plate and the negative electrode connecting ring can be electrically connected, thereby driving the alarm to sound an alarm, which is used to remind the operator, so that the pipette is always in a vertical state when in use, and the accuracy of pipetting can be improved.

[0017] 2. In the utility model, the straws are plugged into the through holes on the surface of the fixing frame. The handle is matched with the fixing frame, so that multiple groups of straws can be installed and removed at the same time during use, which is more convenient to use. The fixing frame is composed of multiple groups of separate seats, and the separate seats are connected by snapping the splicing seats and the splicing grooves. The length of the fixing frame can be easily adjusted, so as to adjust the number of quick-release straws during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a combined pipette of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a combined pipette of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a vertical measuring instrument for a combined pipette of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of a fixing frame structure of a combined pipette.

[0022] Reference numerals:

[0023] 1. Machine body; 2. Buckle; 3. Connecting seat; 4. Connecting head; 5. Straw; 6. Fixing frame; 7. Mounting seat; 8. Vertical measuring instrument; 9. Positive connecting plate; 10. Insulating ring; 11. Negative connecting ring; 12. Ball bearing; 13. Alarm; 14. Through hole; 15. Splicing seat; 16. Splicing groove; 17. Handle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] like Figure 1-4 As shown, a combined pipette proposed by the utility model comprises a body 1, a buckle 2, a connecting seat 3, a connecting head 4 and a straw 5, wherein the connecting seat 3 is connected to the bottom of the body 1, the connecting heads 4 are equidistantly distributed at the bottom of the connecting seat 3, the straw 5 is plugged into the connecting head 4, the buckle 2 is integrally formed at the top of the side wall of the body 1, and is characterized in that a fixing frame 6 is movably sleeved on the surface of the straw 5;

[0026] The side wall of the connecting seat 3 is integrally formed with a mounting seat 7, and a vertical measuring instrument 8 is installed on the upper surface of the mounting seat 7. A positive connecting plate 9 is provided at the bottom of the inner cavity of the vertical measuring instrument 8, and an insulating ring 10 is provided at the edge of the upper surface of the positive connecting plate 9. A negative connecting ring 11 is fixedly connected to the upper surface of the insulating ring 10, and a ball 12 is movably provided on the upper surface of the positive connecting plate 9. The negative connecting ring 11 and the insulating ring 10 are in contact with the inner wall of the vertical measuring instrument 8. An alarm 13 is provided on the lower surface of the fixing frame 6, and the alarm 13 is electrically connected to the negative connecting ring 11 through a wire.

[0027] It should be noted that four fingers are held on the body 1, and the index finger is against the buckle 2, which makes it convenient to hold the body 1 when in use. There are several groups of connectors 4 at the bottom of the body 1 through the connecting seat 3, which can be plugged into the pipette 5. When the pipette 5 is used to aspirate liquid, the ball 12 in the vertical measuring instrument 8 moves on the surface of the positive electrode connecting disk 9, and the ball 12 is electrically connected to the positive electrode connecting disk 9. When the body 1 is tilted, the ball 12 moves downward, and when the ball 12 abuts on the negative electrode connecting ring 11, the positive electrode connecting disk 9 can be electrically connected to the negative electrode connecting ring 11, thereby driving the alarm 13 to sound an alarm, which is used to remind the operator and keep the pipette in a vertical state at all times during use, thereby improving the accuracy of pipetting.

[0028] In this embodiment, if Figure 1 and Figure 4 As shown, the surface of the fixing frame 6 is provided with through holes 14, and the through holes 14 are equidistantly distributed, and the through holes 14 correspond to the positions of the straws 5. The fixing frame 6 is composed of a plurality of split seats, and the through holes 14 are distributed on the surface of the split seats. A splicing seat 15 is provided on one end surface of the split seats, and a splicing groove 16 is integrally formed on the end surface of the split seats away from the splicing seat 15, and the splicing groove 16 is snap-connected with the splicing seat 15. A handle 17 is integrally formed on the middle surface of the fixing frame 6, and the handle 17 is in a letter-shaped structure.

[0029] It should be noted that the straw 5 is plugged into the through hole 14 on the surface of the fixing frame 6. The handle 17 is matched with the fixing frame 6, so that multiple groups of straws 5 can be installed and removed at the same time during use, which is more convenient to use. The fixing frame 6 is composed of multiple groups of separate seats, and the separate seats are connected by snap-fitting the splicing seat 15 and the splicing groove 16. The length of the fixing frame 6 can be conveniently adjusted, so as to adjust the number of quick-release straws 5 during use.

[0030] The working principle and use process of the utility model are as follows: four fingers hold the machine body 1, and the index finger abuts on the buckle 2, so that the machine body 1 can be conveniently held when in use. The bottom of the machine body 1 is divided into a plurality of groups of connectors 4 through the connecting seat 3, and the connector 4 can be plugged with the straw 5. When the liquid is sucked through the straw 5, the ball 12 in the vertical measuring instrument 8 moves on the surface of the positive electrode connecting plate 9, and the ball 12 is electrically connected to the positive electrode connecting plate 9. When the machine body 1 is tilted, the ball 12 moves downward, and when the ball 12 abuts on the negative electrode connecting ring 11, the positive electrode connecting plate 9 and the negative electrode connecting ring 11 can be electrically connected. The handle 17 is connected to the fixing frame 6, so that the alarm 13 can be driven to sound an alarm to remind the operator so that the pipette is always in a vertical state when in use, which can improve the accuracy of pipetting. The straw 5 is plugged into the through hole 14 on the surface of the fixing frame 6. The handle 17 is matched with the fixing frame 6, so that multiple groups of straws 5 can be installed and removed at the same time when in use, which is more convenient to use. The fixing frame 6 is composed of multiple groups of separate seats, and the separate seats are connected by the splicing seat 15 and the splicing groove 16. The length of the fixing frame 6 can be easily adjusted, so as to adjust the number of quick-release straws 5 when in use.

[0031] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. A combined pipette, comprising a body (1), a buckle (2), a connecting seat (3), a connecting head (4) and a straw (5), wherein the connecting seat (3) is connected to the bottom of the body (1), the connecting heads (4) are equidistantly distributed at the bottom of the connecting seat (3), the straw (5) is plugged into the connecting head (4), and the buckle (2) is integrally formed at the top of the side wall of the body (1), characterized in that: A fixing frame (6) is movably sleeved on the surface of the straw (5); The side wall of the connection seat (3) is integrally formed with a mounting seat (7), the upper surface of the mounting seat (7) is mounted with a vertical measuring instrument (8), the bottom of the inner cavity of the vertical measuring instrument (8) is provided with a positive electrode connection plate (9), the upper surface edge of the positive electrode connection plate (9) is provided with an insulating ring (10), the upper surface of the insulating ring (10) is fixedly connected with a negative electrode connection ring (11), and the upper surface of the positive electrode connection plate (9) is movably provided with a ball (12).

2. A combined pipette according to claim 1, characterized in that: The negative electrode connecting ring (11) and the insulating ring (10) are in contact with the inner wall of the vertical measuring instrument (8).

3. A combined pipette according to claim 2, characterized in that: An alarm (13) is provided on the lower surface of the fixing frame (6), and the alarm (13) is electrically connected to the negative electrode connecting ring (11) via a wire.

4. A combined pipette according to claim 1, characterized in that: The surface of the fixing frame (6) is provided with through holes (14), the through holes (14) are distributed at equal intervals, and the positions of the through holes (14) and the straws (5) correspond to each other.

5. A combined pipette according to claim 4, characterized in that: The fixing frame (6) is composed of a multi-component split seat, and the through holes (14) are distributed on the surface of the split seat.

6. A combined pipette according to claim 5, characterized in that: A splicing seat (15) is provided on one end surface of the split seat, and a splicing groove (16) is integrally formed on one end surface of the split seat away from the splicing seat (15), and the splicing groove (16) is snap-connected with the splicing seat (15).

7. A combined pipette according to claim 6, characterized in that: A handle (17) is integrally formed on the middle surface of the fixing frame (6), and the handle (17) is in a letter-shaped structure.

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