CN215877991U

CN215877991U - Liquid transfer device

Info

Publication number: CN215877991U
Application number: CN202121256294.6U
Authority: CN
Inventors: 周晨
Original assignee: Shanghai Andike Zhengelectronic Technology Co ltd
Current assignee: Shanghai Andike Zhengelectronic Technology Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-02-22
Anticipated expiration: 2031-06-04

Abstract

The utility model belongs to the technical field of laboratory glassware and specifically relates to a pipettor is related to, and it includes stock solution bottle and pipette, and the top of stock solution bottle is equipped with the opening, and the opening part can be dismantled and be connected with sealed lid, is provided with the aspirator pump in the sealed lid, seals to be equipped with button and outlet duct on the lid, and the outlet duct communicates with the end of giving vent to anger of aspirator pump, the one end of pipette communicates with the one end that sealed lid was kept away from to the stock solution bottle, the top surface of pipette is not higher than the diapire of the inside cavity of stock solution bottle. This application has when liquid in the pipette is as taking liquid to carry out follow-up test, the liquid of being convenient for is discharged effect in pipette and stock solution bottle.

Description

Liquid transfer device

Technical Field

The application relates to the field of experimental instruments, in particular to a liquid transfer device.

Background

A liquid transfer device, also called a liquid transfer gun, is a metering tool for transferring liquid from an original container to another container within a certain range, and is widely used in the fields of biology, chemistry and the like.

For example, chinese patent No. CN206392094U discloses a pipette, which comprises a liquid storage bottle for containing liquid and a liquid suction tube, wherein one end of the liquid suction tube penetrates through the bottom surface of the liquid suction bottle, and the liquid suction tube is located in the liquid storage bottle and at the upper part of the liquid storage bottle. The top of stock solution bottle is equipped with the opening, and opening part threaded connection has sealed lid, is provided with the aspirator pump in the sealed lid, and the aspirator pump provides the power by the battery, and the aspirator pump can be pumped to the cavity in the stock solution bottle, still is equipped with button and outlet duct on the sealed lid, and the button is used for controlling the aspirator pump switching, and the outlet duct communicates with the end of giving vent to anger of aspirator pump. The air suction pump is started through the button, and liquid can be sucked into the liquid storage bottle through the liquid suction pipe. When the liquid in the liquid storage bottle needs to be used, the sealing cover is unscrewed, and the liquid in the liquid storage bottle is poured out from the opening at the top end of the liquid storage bottle.

In view of the above-mentioned related art, the inventor believes that, because some liquid may exist in the liquid suction pipe after liquid suction, when the sealing cover is unscrewed to pour out the liquid in the liquid storage bottle, the liquid in the liquid suction pipe easily flows out from the end of the liquid suction pipe far away from the liquid storage bottle and then flows to a workbench or the ground, and workers need to clean the liquid, which increases labor force. In order to reduce the above problems, the pipette is placed in the receiving container and the liquid in the pipette is discharged first. If the liquid discharged from the liquid suction pipe is not used as the taken liquid for subsequent tests, waste is caused; if the liquid in the liquid suction pipe is used as the taken liquid for subsequent tests, the liquid suction pipe is placed into the receiving container to discharge the liquid in the liquid suction pipe, and the liquid in the liquid storage bottle needs to be poured out from the opening at the top end of the liquid storage bottle, so that the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to be convenient for liquid and discharge from pipette and stock solution bottle when liquid in the pipette carries out follow-up test as taking liquid, this application provides a pipettor.

The application provides a pipettor adopts following technical scheme:

the utility model provides a pipettor, includes stock solution bottle and pipette, and the top of stock solution bottle is equipped with the opening, and the opening part can be dismantled and be connected with sealed lid, is provided with the aspirator pump in the sealed lid, is equipped with button and outlet duct on the sealed lid, and the outlet duct communicates with the end of giving vent to anger of aspirator pump, the one end of pipette is kept away from the one end intercommunication of sealed lid with the stock solution bottle, the top surface of pipette is not higher than the diapire of the inside cavity of stock solution bottle.

Through adopting above-mentioned technical scheme, when taking out the liquid in the stock solution bottle, earlier keep away from the one end of stock solution bottle with the pipette and put into accepting the container, then open sealed lid. Because the top surface of pipette is not higher than the diapire of stock solution bottle inner cavity, therefore the liquid in the stock solution bottle is under the effect of atmospheric pressure, and the liquid of being convenient for is discharged from pipette and stock solution bottle along the pipette from the one end that the stock solution bottle was kept away from to the pipette.

Optionally, an elastic piston is arranged in the liquid storage bottle in a sliding mode, the elastic piston slides along the axial direction of the liquid storage bottle, and the peripheral side wall of the elastic piston is abutted to the inner wall of the liquid storage bottle.

Through adopting above-mentioned technical scheme, when the aspirator pump started, elastic piston can upwards slide to make liquid can inhale in the stock solution bottle. When liquid in the liquid storage bottle needs to be taken out, the elastic piston slides downwards, so that the liquid in the liquid storage bottle is pushed downwards, and the flowing speed of the liquid from the liquid storage bottle is improved.

Optionally, the part of the liquid storage bottle close to the liquid suction pipe is tapered along the direction from the sealing cover to the liquid suction pipe, and the communication position of the liquid suction pipe and the liquid storage bottle is located at the tapered minimum end of the liquid storage bottle; the elastic piston comprises a plug body and a matching block, the matching block is arranged on one surface, away from the sealing cover, of the plug body, and the matching block is matched with the gradually-reduced part of the liquid storage bottle.

Through adopting above-mentioned technical scheme, the part that the stock solution bottle is close to the pipette is along the sealed direction convergent to the pipette of lid, and the liquid inflow in the stock solution bottle of being convenient for is in the pipette. The arrangement of the matching block can ensure that the elastic piston pushes the liquid in the liquid storage bottle out of the liquid storage bottle more sufficiently, so that the liquid storage bottle is not easy to have residue.

Optionally, be connected with the actuating lever on the elastic piston, the length direction of actuating lever is on a parallel with the axial of stock solution bottle, the one end that elastic piston was kept away from to the actuating lever passes the top of stock solution bottle, the actuating lever passes stock solution bottle department and is equipped with the sealing washer, the sealing washer cover is located on the actuating lever.

Through adopting above-mentioned technical scheme, when liquid need take out from the stock solution bottle, open sealed lid, promote the actuating lever and slide down to drive elastic piston and slide down, push out liquid from the stock solution bottle.

Optionally, a driving spring is sleeved on a part of the driving rod, which is located outside the liquid storage bottle, one end of the driving spring is connected with the liquid storage bottle, and the other end of the driving spring is connected with the driving rod; when the driving spring is in a natural state, the matching block is positioned at the tapered part of the liquid storage bottle.

Through adopting above-mentioned technical scheme, when inhaling in the stock solution bottle and have liquid, drive spring is in compression state. When the liquid needs to be taken out from the liquid storage bottle, the sealing cover is opened, and the driving spring drives the elastic piston to slide downwards to automatically push the liquid out of the liquid storage bottle in order to restore the natural state.

Optionally, the driving spring, the driving rod and the liquid storage bottle can be detachably connected.

Through adopting above-mentioned technical scheme, because driving spring is yielding after long-term the use and damages, consequently can dismantle driving spring from actuating lever and stock solution bottle and change down.

Optionally, an elastic sliding block is connected to the elastic piston, and a sliding groove for sliding the elastic sliding block is formed in the inner wall of the liquid storage bottle.

Through adopting above-mentioned technical scheme, the spout can carry on spacingly to the slider to slide to elastic piston carries on spacingly, improves elastic piston gliding stability.

Optionally, a visual window is arranged on the liquid storage bottle, and scale marks are arranged on one side of the visual window.

Through adopting above-mentioned technical scheme, the setting of visual window and scale mark is convenient for the staff ration to absorb liquid.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when taking out the liquid in the liquid storage bottle, firstly putting one end of the liquid suction pipe, which is far away from the liquid storage bottle, into the receiving container, and then opening the sealing cover, because the top surface of the liquid suction pipe is not higher than the bottom wall of the cavity in the liquid storage bottle, the liquid in the liquid storage bottle flows out from one end of the liquid suction pipe, which is far away from the liquid storage bottle, along the liquid suction pipe under the action of air pressure, so that the liquid can be conveniently discharged from the liquid outlet pipe and the liquid storage bottle;

2. when the liquid in the liquid storage bottle needs to be taken out, the elastic piston slides downwards, so that the liquid in the liquid storage bottle is pushed downwards, and the flowing speed of the liquid from the liquid storage bottle is improved;

3. when liquid is sucked into the liquid storage bottle, the driving spring is in a compressed state. When the liquid needs to be taken out from the liquid storage bottle, the sealing cover is opened, and the driving spring drives the elastic piston to slide downwards to automatically push the liquid out of the liquid storage bottle in order to restore the natural state.

Drawings

Fig. 1 is a schematic structural diagram of a pipette used for displaying in an embodiment of the present application.

Fig. 2 is a schematic diagram for showing the internal structure of the liquid storage bottle in the embodiment of the application.

Description of reference numerals: 1. a liquid storage bottle; 11. a chute; 2. a pipette; 3. a sealing cover; 31. a button; 32. an air outlet pipe; 4. an elastic piston; 41. a plug body; 42. a matching block; 43. an elastic slider; 5. a drive rod; 6. a drive spring; 7. and (7) mounting the sheet.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a pipettor. Referring to fig. 1, the liquid transfer device comprises a liquid storage bottle 1 and a liquid transfer tube 2 fixedly installed at the bottom end of the liquid storage bottle 1, an opening is formed in one side of the top surface of the liquid storage bottle 1, a sealing cover 3 is connected to the opening through threads, an air suction pump (not shown in the figure) is arranged in the sealing cover 3, a button 31 and an air outlet pipe 32 are arranged on the sealing cover 3, and the air outlet pipe 32 is communicated with an air outlet end of the air suction pump. Pipette 2 fixed connection is in the bottom of stock solution bottle 1, and the internal diameter of the lower part of stock solution bottle 1 reduces along sealed lid 3 to pipette 2's direction gradually, and pipette 2's one end and 1 internal diameter minimum department intercommunication of stock solution bottle. The top surface of the liquid suction pipe 2 is flush with the lowest end of the inner cavity of the liquid storage bottle 1.

When taking out the liquid in the stock solution bottle 1, put into the container of accepting with the one end that the stock solution bottle 1 was kept away from to pipette 2 earlier, then open sealed lid 3, the liquid in the stock solution bottle 1 flows along pipette 2 from the one end that the stock solution bottle 1 was kept away from to pipette 2 under the effect of atmospheric pressure to the realization is taken out the liquid in the stock solution bottle 1.

Referring to fig. 1 and 2, the peripheral wall of the liquid storage bottle 1 is provided with a visual window and scale marks (not shown) along the axial direction thereof, so as to facilitate quantitative liquid suction. An elastic piston 4 is coaxially arranged in the liquid storage bottle 1, and in the embodiment, the elastic piston 4 is made of rubber. The elastic piston 4 comprises a plug body 41 and a matching block 42, and the diameter of the plug body 41 is equal to the inner diameter of the upper part of the liquid storage bottle 1. The matching block 42 is integrally formed on one surface of the plug body 41 away from the sealing cover 3, and the matching block 42 is matched with the tapered part of the liquid storage bottle 1. Fixedly connected with actuating lever 5 on the top surface of cock body 41, actuating lever 5 and the 1 coaxial setting of stock solution bottle, the one end that resilient piston 4 was kept away from to actuating lever 5 passes the top of stock solution bottle 1 and is located outside stock solution bottle 1, and stock solution bottle 1 passes a fixed mounting by actuating lever 5 and has the sealing washer, and the sealing washer cover is established and is used for improving the leakproofness of stock solution bottle 1 on actuating lever 5.

Referring to fig. 1 and 2, the elastic piston 4 is slidably installed in the liquid storage bottle 1 in the axial direction of the liquid storage bottle 1. When the liquid needs to be taken out from the liquid storage bottle 1, the sealing cover 3 is opened, the elastic piston 4 is pushed by the driving rod 5 to slide downwards, and the liquid is pushed out from the liquid storage bottle 1. Two elastic sliding blocks 43 made of rubber materials are oppositely arranged on the peripheral side wall of the plug body 41, the sliding blocks and the plug body 41 are integrally formed, and a sliding groove 11 for the sliding of the sliding blocks is formed in the peripheral side wall of the liquid storage bottle 1 so as to improve the sliding stability of the elastic piston 4.

Referring to fig. 1 and 2, the part cover that the actuating lever 5 is located outside the liquid storage bottle 1 is equipped with drive spring 6, and drive spring 6's both ends fixedly connected with installation piece 7, and the installation piece 7 of drive spring 6 bottom is connected with the top surface of liquid storage bottle 1 through the screw, and the installation piece 7 on drive spring 6 top is located the top of actuating lever 5 top and is connected with the top surface of actuating lever 5 through the screw, and the actuating lever 5 passes the installation piece 7 of drive spring 6 bottom. The drive spring 6 can be replaced by detaching the drive spring 6 from the reservoir 1 and the drive lever 5. When the driving spring 6 is in a natural state, the matching block 42 is positioned at the tapered part of the liquid storage bottle 1.

The implementation principle of a pipettor in the embodiment of the application is as follows: when liquid is sucked, the suction pump is started, the elastic piston 4 moves upwards, the liquid is sucked into the liquid storage bottle 1, and the driving spring 6 is in a stretching state at the moment. When discharging, a receiving container is placed under the pipette 2 in advance, then the sealing cover 3 is unscrewed, and the elastic piston 4 is driven to slide downwards by the driving spring 6 to restore to a natural state, so that the liquid is discharged from the liquid storage bottle 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pipettor, includes stock solution bottle (1) and pipette (2), and the top of stock solution bottle (1) is equipped with the opening, and the opening part can be dismantled and be connected with sealed lid (3), is provided with the aspirator pump in sealed lid (3), is equipped with button (31) and outlet duct (32) on sealed lid (3), and outlet duct (32) communicate its characterized in that with the end of giving vent to anger of aspirator pump: one end of the liquid suction pipe (2) is communicated with one end of the liquid storage bottle (1) far away from the sealing cover (3), and the top surface of the liquid suction pipe (2) is not higher than the bottom wall of the inner cavity of the liquid storage bottle (1).

2. A pipette as defined in claim 1, wherein: the liquid storage bottle is characterized in that an elastic piston (4) is arranged in the liquid storage bottle (1) in a sliding mode, the elastic piston (4) slides along the axial direction of the liquid storage bottle (1), and the peripheral side wall of the elastic piston (4) is abutted to the inner wall of the liquid storage bottle (1).

3. A pipette as defined in claim 2, wherein: the part of the liquid storage bottle (1) close to the liquid suction pipe (2) is gradually reduced along the direction from the sealing cover (3) to the liquid suction pipe (2), and the communication position of the liquid suction pipe (2) and the liquid storage bottle (1) is positioned at the minimum end of the liquid storage bottle (1) which is gradually reduced; the elastic piston (4) comprises a plug body (41) and a matching block (42), the matching block (42) is arranged on one surface, away from the sealing cover (3), of the plug body (41), and the matching block (42) is matched with the gradually-reduced part of the liquid storage bottle (1).

4. A pipette as defined in claim 3, wherein: be connected with actuating lever (5) on elastic piston (4), the length direction of actuating lever (5) is on a parallel with the axial of stock solution bottle (1), the top of stock solution bottle (1) is passed to the one end that elastic piston (4) were kept away from in actuating lever (5), actuating lever (5) are passed stock solution bottle (1) and are located and are equipped with the sealing washer, the sealing washer cover is located on actuating lever (5).

5. A pipette as defined in claim 4, characterised in that: a driving spring (6) is sleeved on the part, located outside the liquid storage bottle (1), of the driving rod (5), one end of the driving spring (6) is connected with the liquid storage bottle (1), and the other end of the driving spring (6) is connected with the driving rod (5); when the driving spring (6) is in a natural state, the matching block (42) is positioned at the tapered part of the liquid storage bottle (1).

6. A pipette as defined in claim 5, characterised in that: the driving spring (6) is detachably connected with the driving rod (5) and the liquid storage bottle (1).

7. A pipette as defined in claim 2, wherein: the elastic piston (4) is connected with an elastic sliding block (43), and the inner wall of the liquid storage bottle (1) is provided with a sliding groove (11) for the elastic sliding block (43) to slide.

8. A pipette as defined in claim 1, wherein: the liquid storage bottle (1) is provided with a visual window, and one side of the visual window is provided with scale marks.