CN216172430U

CN216172430U - Pipettor with seal structure

Info

Publication number: CN216172430U
Application number: CN202122301024.9U
Authority: CN
Inventors: 盛洪辉; 袁兴刚; 胡君君
Original assignee: Shanghai Zhonglin Electromechanical Equipment Co ltd
Current assignee: Shanxun Shanghai Intelligent Equipment Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to the technical field of experimental equipment, in particular to a liquid transfer device with a sealing structure, which comprises a liquid transfer device body, a sleeve and an elastic suction nozzle, wherein the elastic suction nozzle is connected with the liquid transfer device body through the sleeve; one side of the pipettor body is connected with a gun head detacher, the bottom of the gun head detacher is connected with a gun head fixing ring through a connecting rod, and the gun head fixing ring is sleeved outside the elastic suction nozzle; the side wall of the gun head detacher is provided with a fixed rod in sliding connection, and the bottom of the fixed rod is connected with a fixed frame arranged at the bottom of the liquid transfer device body.

Description

Pipettor with seal structure

Technical Field

The utility model relates to the technical field of experimental equipment, in particular to a liquid transfer device with a sealing structure.

Background

Pipettes are used in particular in scientific and industrial laboratories in the fields of medical, molecular biology and pharmaceutical applications for metering selected volumes of a liquid. The liquid may in particular be a homogeneous (monophasic) liquid, consisting of a single liquid component or of a homogeneous mixture (solution) of several liquid components. Furthermore, the liquid may be a heterogeneous (multiphase) mixture of one liquid with another (emulsion) or a solid (suspension).

The pipettor has a rod-shaped pipettor housing with a bayonet (interface projection) at the lower end for the clamping of a pipette tip. The plug is usually a conical, cylindrical or segmented conical and cylindrical projection and is also referred to as a "working cone". Pipetting tips are hollow small tubes with a tip opening at the lower end and an insertion opening at the upper end, by means of which the pipetting tip can be clamped to the insertion head. The liquid is absorbed into and output from the pipette tip. The absorption and output of the liquid is controlled by a pipette. Fixed volume pipettors are used to pipette constant volumes.

When liquid is sucked, the liquid transfer device needs to be kept in a vertical state, and the gun head is inserted 2-3 mm below the liquid level. When liquid exists in a pipette head, if the pipette is horizontally placed or inverted, the liquid can flow back to corrode the piston spring, and therefore the service life of the pipette is shortened. When finishing using, the pipettor must vertically hang on fixed liquid-transfering gun rack, and the pipettor is accomodate very inconveniently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a liquid transfer device with a sealing structure, which is used for solving the problems that the liquid transfer device cannot be sealed and cannot be vertically stored.

The utility model is realized by the following technical scheme:

the utility model discloses a liquid transfer device with a sealing structure, which comprises a liquid transfer device body, a sleeve and an elastic suction nozzle, wherein the elastic suction nozzle is connected with the liquid transfer device body through the sleeve; one side of the pipettor body is connected with a gun head detacher, the bottom of the gun head detacher is connected with a gun head fixing ring through a connecting rod, and the gun head fixing ring is sleeved outside the elastic suction nozzle; the side wall of the gun head detacher is provided with a fixed rod in sliding connection, and the bottom of the fixed rod is connected with a fixed frame arranged at the bottom of the liquid transfer device body.

Preferably, the sealing cover is internally communicated and provided with a positioning groove at the bottom, and the positioning groove is internally provided with sealing blocks and a conduction groove, wherein the number of the sealing blocks is matched with that of the elastic retaining pieces.

Preferably, the sealing block and the conduction groove are arranged at intervals, and a stop block is arranged between the sealing block and the conduction groove.

Preferably, the side wall of the gun head detacher is provided with a T-shaped sliding chute, and the T-shaped sliding chute is matched with a T-shaped sliding block arranged on the inner side of the fixed rod.

Preferably, the side wall of the gun head detacher is provided with a return groove and a fixing groove.

Preferably, the top of the fixed rod is provided with a spherical rotating pin which is connected with the rotating rod.

Preferably, the length of the fixing rod is greater than the length from the bottom of the pipettor body to the elastic suction nozzle.

Preferably, the side wall of the liquid transfer device body is provided with a counting display screen.

The utility model has the beneficial effects that:

1. in the pipettor rifle body, for realizing the effective absorption of liquid route and gas circulation route, current pipettor in use presses to first fender when the pipettor button, and the release button carries out the imbibition back, revolves the spiral shell lid, through the sealed lid separation between pipettor body and the disposable suction head this moment, not only can prevent that liquid from getting into the suction head too fast can lead to liquid suck-back pipettor inside, separation liquid and pipettor body when experimenter carelessly keeps flat the pipettor moreover.

2. When the pipette is used, the pipette needs to be stored, the traditional pipette needs to be hung through a special pipette fixing support, and experimenters may need to take the pipette for multiple times in the process of using the pipette in a laboratory.

The liquid transfer device disclosed by the utility model has excellent storage and sealing effects and strong practicability, overcomes the defects that the existing liquid transfer device cannot be sealed and cannot be stored vertically, and is suitable for popularization and application.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of the present invention;

fig. 2 is a schematic structural view of a pipette body of the present invention;

FIG. 3 is a schematic view of the seal of the present invention;

FIG. 4 is a schematic view of the receiving structure of the present invention;

FIG. 5 is a schematic view of a retaining bar construction of the present invention;

fig. 6 is a schematic cross-sectional structure of a pipette body of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment discloses a pipettor with a sealing structure, please refer to fig. 1, which includes a pipettor body 1, a sleeve 3 and an elastic suction nozzle 24, wherein the elastic suction nozzle 24 is sleeved with a disposable suction head 7, the elastic suction nozzle 24 is connected with the pipettor body 1 through the sleeve 3, a pipetting cavity 21 is arranged inside the pipettor body 1, a pipetting press button 9 is slidably connected to the top end of the pipettor body 1, and the pipetting press button 9 is sleeved with a first return spring and is arranged at the top of the pipetting cavity 21.

Referring to fig. 2 and 3, an elastic blocking piece 14 is disposed inside the pipette body 1, and a sealing cover 2 is disposed outside the elastic blocking piece 14. The sealing cover 2 is internally communicated and provided with a positioning groove at the bottom, and the positioning groove is internally provided with a sealing block 16 and a conduction groove 15 which are matched with the 14 elastic retaining pieces in number. The sealing block 16 and the conduction groove 15 are arranged at intervals, and a stop 17 is arranged between the sealing block 16 and the conduction groove 15.

In the pipettor rifle body, for realizing the effective absorption of liquid route and gas circulation route, current pipettor in use presses to first fender when the pipettor button, and the release button carries out the imbibition back, revolves to twist sealed lid 2, through sealed lid 2 separation between pipettor body 1 and the disposable suction head 7 this moment, not only can prevent that liquid from getting into the suction head too fast can lead to inside the liquid suck-back pipettor, and separation liquid and pipettor body 1 when the experimenter is carelessly kept flat the pipettor moreover.

Referring to fig. 1, 4 and 5, one side of the pipette body 1 is connected to a tip detacher 4, a tip push-out button 8 is disposed on the top of the tip detacher 4, and the tip push-out button 8 is sleeved with a second return spring and disposed on the top of the tip detacher 4. The bottom of the gun head detacher 4 is connected with a gun head fixing ring 6 through a connecting rod 5, and the gun head fixing ring 6 is sleeved outside the elastic suction nozzle 24. A fixing rod 13 in sliding connection is arranged on the side wall of the gun head detacher 4, and the bottom of the fixing rod 13 is connected with a fixing frame 10 arranged at the bottom of the pipette body 1. Referring to fig. 6, a T-shaped chute 20 is formed in the side wall of the lance tip detacher 4, and the T-shaped chute 20 is matched with a T-shaped slide block 12 arranged inside the fixing rod 13. So that the fixing rod 13 is allowed to move along the side wall of the lance tip discharger 4 without departing from the lance tip discharger 4.

Referring to fig. 5, a return groove 22 and a fixing groove 23 are formed in a side wall of the lance tip remover 4. The top of the fixed rod 13 is provided with a spherical rotating pin 18, and the spherical rotating pin 18 is connected with a rotating rod 19. The length of the fixing rod 13 is greater than the length from the bottom of the pipette body 1 to the elastic suction nozzle 24. When the rotating rod 19 is limited in the return groove 22, the fixing frame 10 is just received in the pipette body 1, and when the rotating rod 19 is shifted by the spherical rotating pin 18 and the rotating rod 19 is limited in the fixing groove 23, the fixing rod 13 is connected with the fixing frame 10, so that the pipette is vertically placed.

When the pipette is used, the pipette needs to be stored, the traditional pipette needs to be hung through a special pipette fixing support, and experimenters may need to take the pipette for multiple times in the process of using the pipette in a laboratory.

Referring to fig. 1 and 4, a counting display screen 11 is disposed on a sidewall of the pipette body 1, and the counting display screen 11 is used for displaying the volume and the number of times of the current pipetting.

When the experiment personnel finish using, press down suction head push button 8, through the associative effect of connecting rod 5 for rifle head solid fixed ring 6 moves down, disposable suction head 7 is deviate from smoothly, and the liquid-transfering work of this moment is accomplished.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A pipettor with seal structure, includes pipettor body (1), sleeve (3) and elasticity suction nozzle (24), elasticity suction nozzle (24) are through sleeve (3) connect pipettor body (1), its characterized in that: an elastic blocking piece (14) is arranged in the pipette body (1), and a sealing cover (2) is arranged on the outer side of the elastic blocking piece (14); one side of the pipettor body (1) is connected with a gun head detacher (4), the bottom of the gun head detacher (4) is connected with a gun head fixing ring (6) through a connecting rod (5), and the gun head fixing ring (6) is sleeved on the outer side of the elastic suction nozzle (24); the side wall of the gun head detacher (4) is provided with a fixing rod (13) in sliding connection, and the bottom of the fixing rod (13) is connected with a fixing frame (10) arranged at the bottom of the pipette body (1).

2. The pipette with the sealing structure according to claim 1, characterized in that: the sealing cover (2) is internally communicated and provided with a positioning groove at the bottom, and the positioning groove is internally provided with sealing blocks (16) and a conduction groove (15) which are matched with the elastic retaining pieces (14) in number.

3. The pipette with the sealing structure according to claim 2, characterized in that: the sealing block (16) and the conduction groove (15) are arranged at intervals, and a stop block (17) is arranged between the sealing block (16) and the conduction groove (15).

4. The pipette with the sealing structure according to claim 1, characterized in that: the side wall of the gun head detacher (4) is provided with a T-shaped sliding chute (20), and the T-shaped sliding chute (20) is matched with a T-shaped sliding block (12) arranged on the inner side of the fixed rod (13).

5. The pipette with the sealing structure according to claim 1, characterized in that: and a return groove (22) and a fixing groove (23) are formed in the side wall of the gun head detacher (4).

6. The pipette with the sealing structure according to claim 1, characterized in that: the top of the fixed rod (13) is provided with a spherical rotating pin (18), and the spherical rotating pin (18) is connected with a rotating rod (19).

7. The pipette with the sealing structure according to claim 1, characterized in that: the length of the fixing rod (13) is greater than the length from the bottom of the pipette body (1) to the elastic suction nozzle (24).

8. The pipette with the sealing structure according to claim 1, characterized in that: the side wall of the pipettor body (1) is provided with a counting display screen (11).