CN216359027U

CN216359027U - Detachable pipette

Info

Publication number: CN216359027U
Application number: CN202123236450.5U
Authority: CN
Inventors: 吴跃勤; 余满江
Original assignee: Hangzhou Aipu Gaote Biological Technology Co ltd
Current assignee: Hangzhou Aipu Gaote Biological Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-04-22
Anticipated expiration: 2031-12-20

Abstract

The application provides a detachable pipette belongs to pipette technical field. The detachable pipette comprises a pipetting drive assembly and a pipette body, wherein the pipetting drive assembly comprises a suction barrel, a piston block, a piston rod, a first spring and a push handle, the pipette body comprises a quick-release joint and a pipette, the quick-release joint is detachably connected with the suction barrel through the thread matching of the quick-release joint and the suction barrel, the liquid suction pipe is screwed at the bottom end of the quick-release joint through the connecting joint, thereby realizing the detachable connection of the pipette and the quick-release joint, assisting the pipette to absorb liquid through the push handle, the piston rod, the piston block and the suction tube, and detaching the quick-release joint and the pipette after completing the primary liquid absorption for the convenient storage and carrying, simultaneously, the cover plate is conveniently cleaned, the cover plate is detached from the top of the suction barrel, the piston block is conveniently taken out, and the piston block and the inner wall of the suction barrel are cleaned, so that the recycling is convenient.

Description

Detachable pipette

Technical Field

The application relates to the pipette field, particularly, relates to a detachable pipette.

Background

Pipettes are gauges used to accurately remove a volume of solution, and are measurement-type instruments that measure only the volume of solution it discharges. The method is widely applied to the field of transferring liquid by aseptic operation, such as tissue culture, bacteriology, clinic and scientific research experiments.

Most of current pipettes are integrated structure, can't dismantle and open to preserve and carry, and long-term the use probably causes the jam of pipette, can't dismantle the clearance to it, and inconvenient people use.

SUMMERY OF THE UTILITY MODEL

In order to remedy the above deficiencies, the present application provides a removable pipette aimed at improving the problems set forth in the background above.

The embodiment of the application provides a detachable pipette, including liquid-transfering drive assembly and pipette main part.

Move liquid drive assembly including suction section of thick bamboo, piston piece, piston rod, first spring and push away the handle, the piston piece slide fit in suction section of thick bamboo internal perisporium, suction section of thick bamboo top lid is equipped with the apron, the piston rod bottom with piston piece fixed connection, first spring housing is located the piston piece with between the apron the piston rod outside, the piston rod top runs through the apron extends to the outside, push away the handle set firmly in the piston rod top.

The pipette body comprises a quick-release connector and a pipette, the quick-release connector is screwed in the bottom end of the suction barrel, and the pipette is screwed in the bottom end of the quick-release connector through a connecting connector.

In the implementation process, the quick-release connector is detachably connected with the suction tube through the threaded fit of the quick-release connector and the suction tube, the liquid suction pipe is screwed at the bottom end of the quick-release connector through the connecting connector, so that the liquid suction pipe is detachably connected with the quick-release connector, the push handle is pulled to move upwards, the piston block is driven by the piston rod to move upwards along the inner wall of the suction tube, a certain negative pressure is generated in the suction tube in a short time, then the liquid suction of the liquid suction pipe is assisted under the action of internal and external pressure difference, the liquid suction of the liquid suction pipe is completed once, the piston block can extrude the first spring to deform in the process, when liquid is discharged, the piston block is pushed to move downwards by the elasticity when the first spring recovers deformation, so that the whole liquid-removing operation is more convenient, after the quick-release connector and the liquid suction pipe can be detached for storage and carrying, and the liquid suction pipe is convenient to clean at the same time, the cover plate is detached from the top of the suction cylinder, so that the piston block can be conveniently taken out, the piston block and the inner wall of the suction cylinder can be cleaned, and the circular use is convenient.

In a specific embodiment, the bottom end of the inner peripheral wall of the suction cylinder is concavely provided with an internal thread, and the top of the internal thread is padded with a sealing ring.

In a specific embodiment, the top end of the outer peripheral wall of the quick-release connector is provided with an external thread matched with the internal thread, and the top end of the quick-release connector is attached to the sealing ring.

In the implementation process, the external thread is matched with the internal thread in a thread manner, so that the quick-release connector is detachably connected with the suction barrel, the suction barrel is detached and cleaned, the sealing ring can seal the joint between the quick-release connector and the suction barrel, and the air leakage condition is avoided when liquid is sucked.

In a specific embodiment, the connecting joint is conical, and the outer peripheral wall of the connecting joint is provided with an anti-slip groove.

In the implementation process, the anti-slip groove is convenient for assembling and disassembling the connecting joint and the quick-release joint.

In a particular embodiment, the pipette bottom end is provided with a pipette head and the pipette peripheral wall is provided with graduations.

In the above-mentioned realization process, the cooperation of imbibition head and scale can make the pipette move the liquid more accurately.

In a specific implementation scheme, the top of the push handle is provided with an arc-shaped groove, and the bottom of the push handle is symmetrically and fixedly provided with two finger rings.

In the implementation process, the thumb is pressed on the arc-shaped groove to prevent falling off, the index finger and the middle finger are respectively inserted into the two finger rings to prevent the fingers from falling off, and air suction can be rapidly realized.

In a specific embodiment, a handle is fixedly arranged at the top end of the outer wall of the suction cylinder, and the handle is L-shaped.

In the implementation process, the finger hooks the handle, so that the push handle is conveniently pressed to move downwards.

In a specific embodiment, still include the joint subassembly, the joint subassembly includes riser, slide bar, second spring and cardboard, the riser symmetry sets up two, two the riser all is fixed in through the lock ring in the bottom both sides of suction section of thick bamboo outer wall, slide bar sliding connection in the riser bottom, the cardboard set firmly in the one end that the slide bar is relative, the second spring housing is located the riser with between the cardboard the slide bar is outside, the cardboard joint in the periphery wall that the quick detach connects.

In the above-mentioned realization process, through the tight hoop with two riser lock hoops on suction section of thick bamboo outer wall, promote the cardboard through the second spring and slide along with the slide bar, make the relative chucking of cardboard in quick detach joint's both sides, can connect to quick detach and play fixed stable effect when using, improved the stability to quick detach connects.

In a specific embodiment, the outer wall of the vertical plate close to the top is provided with a clamping groove, the contact part of the inner wall of the vertical plate and the quick-release joint is provided with a rubber pad, and the bottom end of the vertical plate is provided with a through hole.

In the implementation process, the clamping groove can prevent the vertical plate from slipping from the inside of the hoop, and the rubber pad plays a role in protecting the outer wall of the quick-release connector.

In a specific implementation scheme, a guide groove matched with the inner wall of the through hole is formed in the peripheral wall of the sliding rod, and a pull handle is fixedly arranged at one end, far away from the clamping plate, of the sliding rod.

In the above-mentioned realization process, the cooperation of guide way and through-hole prevents that the slide bar from sliding the in-process and taking place to rotate for the cardboard upset, through the pulling slide bar that the pull handle is more convenient outwards slide, makes two cardboards keep away from the removal each other, is convenient for with the dismantlement that the quick detach connects.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic diagram of a detachable pipette structure provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of a pipetting drive assembly provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a pipette body provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a clamping assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a riser structure according to an embodiment of the present disclosure.

In the figure: 10-a pipetting drive assembly; 110-a suction cylinder; 111-internal screw thread; 112-a sealing ring; 120-a piston block; 130-a piston rod; 140-a first spring; 150-a cover plate; 160-a push handle; 161-arc-shaped groove; 162-finger ring; 170-a handle; 20-a pipette body; 210-a quick release joint; 220-a connection joint; 221-an anti-slip groove; 230-a pipette; 231-a pipette head; 232-scale; 30-a clamping assembly; 310-a riser; 311-card slot; 312-rubber pad; 313-a via; 320-tightening the hoop; 330-a slide bar; 331-a guide groove; 340-a second spring; 350-clamping plate; 360-pull handle.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1-5, the present application provides a removable pipette including a pipette drive assembly 10 and a pipette body 20.

Referring to fig. 2, the liquid-transfering driving assembly 10 includes a suction tube 110, a piston block 120, a piston rod 130, a first spring 140 and a push handle 160, the piston block 120 is slidably attached to the inner peripheral wall of the suction tube 110, the piston block 120 is a rubber plug and is tightly attached to the inner wall of the suction tube 110, a cover plate 150 is disposed on the top end of the suction tube 110, the cover plate 150 is in threaded connection with the suction tube 110, the piston block 120 is conveniently taken out for cleaning after being opened, the bottom end of the piston rod 130 is fixedly connected with the piston block 120, the first spring 140 is sleeved outside the piston rod 130 between the piston block 120 and the cover plate 150, the top end of the piston rod 130 extends to the outside through the cover plate 150, a gap for air to enter and exit is reserved between the cover plate 150 and the piston rod 130, the push handle 160 is fixedly disposed on the top end of the piston rod 130, and the push handle 160 is in threaded connection or welded and fixed with the piston rod 130.

When specifically setting up, push away the handle 160 top and seted up arc wall 161, press the thumb and can prevent to drop at arc wall 161, push away handle 160 bottom symmetry and set firmly two rings 162, insert two rings 162 with forefinger and middle finger respectively in, can prevent that the finger from droing, can realize bleeding fast, the top of the outer wall of suction section of thick bamboo 110 has set firmly handle 170, handle 170 is the L type, it can more laborsaving convenient the pressing of push away handle 160 move down to catch on handle 170 through the finger.

Referring to fig. 3, the pipette body 20 includes a quick release connector 210 and a pipette 230, the quick release connector 210 is screwed into the bottom end of the suction cylinder 110, the pipette 230 is screwed into the bottom end of the quick release connector 210 through a connector 220, a pipette head 231 is disposed at the bottom end of the pipette 230, the pipette head 231 is in a cone shape, a scale 232 is disposed on the outer peripheral wall of the pipette 230, and the pipette 230 can perform pipetting more accurately by matching the pipette head 231 with the scale 232.

In this application, the bottom indent of suction section of thick bamboo 110 internal perisporium is provided with internal thread 111, the top of quick detach joint 210 periphery wall is provided with the external screw thread with internal thread 111 adaptation, the inside of suction section of thick bamboo 110 can be embedded into to the external screw thread section of quick detach joint 210, screw-thread fit through external screw thread and internal thread 111, quick detach joint 210 and suction section of thick bamboo 110 detachably be connected has been realized, so that dismantle the clearance to suction section of thick bamboo 110, internal thread 111 top pad is equipped with sealing washer 112, and quick detach joint 210 top laminating in sealing washer 112, sealing washer 112 can seal the junction between them, avoid the condition that appears leaking gas when absorbing liquid.

In some embodiments, the connecting joint 220 is tapered, and the outer peripheral wall of the connecting joint 220 is provided with an anti-slip groove 221, and the anti-slip groove 221 facilitates the assembly and disassembly of the connecting joint 220 with the quick release joint 210.

Referring to fig. 4 and 5, the clamping assembly 30 further includes a clamping assembly 30, the clamping assembly 30 includes two vertical plates 310, two sliding rods 330, a second spring 340 and two clamping plates 350, the two vertical plates 310 are symmetrically disposed, the two vertical plates 310 are both fixed at two sides of the bottom end of the outer wall of the suction tube 110 through tightening rings 320, the sliding rods 330 are slidably connected to the bottom ends of the vertical plates 310, the clamping plates 350 are fixed at the opposite ends of the sliding rods 330 and are fixed through bolts or welding, the second spring 340 is sleeved outside the sliding rods 330 between the vertical plates 310 and the clamping plates 350, the clamping plates 350 are clamped to the outer wall of the quick-release connector 210, a slope adapted to the outer wall of the quick-release connector 210 is disposed at the top of the clamping plates 350, when in use, the two vertical plates 310 are tightened on the outer wall of the suction tube 110 through the tightening rings 320, the clamping plates 350 are pushed by the second springs 340 to slide along with the sliding rods 330, so that the clamping plates 350 are relatively clamped at two sides of the quick-release connector 210, and can play a role in fixing and stabilizing, the stability to quick detach joint 210 is improved, when quick detach joint 210 needs to be cleared up or changed, pull open cardboard 350 through slide bar 330, can be more convenient dismantle quick detach joint 210 get off.

In other embodiments, a clamping groove 311 is formed in the outer wall of the vertical plate 310 close to the top, the clamping ring 320 is clamped in the clamping groove 311, the vertical plate 310 can be prevented from slipping from the clamping ring 320, a rubber pad 312 is arranged at the contact position of the inner wall of the vertical plate 310 and the quick-release connector 210 in a cushioning manner, the rubber pad 312 plays a role in protecting the outer wall of the quick-release connector 210, a through hole 313 is formed in the bottom end of the vertical plate 310, guide blocks are symmetrically and convexly arranged on the inner peripheral wall of the through hole 313, a guide groove 331 matched with the inner wall of the through hole 313 is formed in the outer peripheral wall of the sliding rod 330, the guide groove 331 is matched with the through hole 313, rotation in the sliding process of the sliding rod 330 is prevented, the clamping plate 350 is turned over, a pull handle 360 is fixedly arranged at one end of the sliding rod 330 far away from the clamping plate 350, the sliding rod 330 is more conveniently pulled to slide outwards through the pull handle 360, two clamping plates 350 are far away from each other and move, and the quick-release connector 210 is convenient to disassemble.

The working principle of the detachable pipette is as follows: when the quick-release connector is used, the external thread section of the quick-release connector 210 is embedded into the suction cylinder 110, the quick-release connector 210 is detachably connected with the suction cylinder 110 through the thread fit of the external thread and the internal thread 111, the pipette 230 is screwed at the bottom end of the quick-release connector 210 through the connecting connector 220, so that the pipette 230 is detachably connected with the quick-release connector 210, the forefinger and the middle finger are respectively inserted into the two finger rings 162, the push handle 160 is pulled to move upwards, the piston rod 130 drives the piston block 120 to move upwards along the inner wall of the suction cylinder 110, a certain negative pressure is generated in the suction cylinder 110 within a short time, then the pipette 230 is assisted to suck liquid under the effect of the internal and external pressure difference, one-time pipette 230 liquid suction is completed, in the process, the piston block 120 can extrude the first spring 140 to deform, when liquid is discharged, the piston block 120 is pushed downwards by the elastic force generated when the first spring 140 recovers deformation, make whole move liquid operation more convenient, improve the practicality, after using up, can dismantle quick detach joint 210 and pipette 230 to preserve and carry, conveniently clear up it simultaneously, with apron 150 from the dismantlement of suction tube 110 top, be convenient for take out piston block 120 and clear up piston block 120 and suction tube 110 inner wall, convenient recycling.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A detachable pipette, characterized in that, includes

The liquid transfer driving assembly (10) comprises a suction barrel (110), a piston block (120), a piston rod (130), a first spring (140) and a push handle (160), wherein the piston block (120) is slidably attached to the inner peripheral wall of the suction barrel (110), a cover plate (150) is arranged at the top end of the suction barrel (110) in a covering mode, the bottom end of the piston rod (130) is fixedly connected with the piston block (120), the first spring (140) is sleeved outside the piston rod (130) between the piston block (120) and the cover plate (150), the top end of the piston rod (130) penetrates through the cover plate (150) and extends to the outside, and the push handle (160) is fixedly arranged at the top end of the piston rod (130);

the pipette comprises a pipette body (20), wherein the pipette body (20) comprises a quick-release joint (210) and a pipette (230), the quick-release joint (210) is screwed in the bottom end of the suction barrel (110), and the pipette (230) is screwed in the bottom end of the quick-release joint (210) through a connecting joint (220).

2. The removable pipette as recited in claim 1, wherein the bottom end of the inner peripheral wall of the suction barrel (110) is recessed with an internal thread (111), and the top of the internal thread (111) is padded with a sealing ring (112).

3. The removable pipette of claim 2, wherein the top end of the outer peripheral wall of the quick release joint (210) is provided with an external thread adapted to the internal thread (111), and the top end of the quick release joint (210) is engaged with the sealing ring (112).

4. A removable pipette according to claim 1, characterised in that the connection fitting (220) is conical and that the peripheral wall of the connection fitting (220) is provided with anti-slip grooves (221).

5. A removable pipette as defined in claim 1, wherein the bottom end of the pipette (230) is provided with a pipette tip (231) and the outer circumferential wall of the pipette (230) is provided with graduations (232).

6. The removable pipette as recited in claim 1, wherein the top of the push handle (160) is provided with an arc-shaped slot (161), and two finger rings (162) are symmetrically and fixedly arranged at the bottom of the push handle (160).

7. The removable pipette as recited in claim 1, wherein a handle (170) is fixed to the top of the outer wall of the suction barrel (110), and the handle (170) is L-shaped.

8. The removable pipette of claim 1, further comprising a clamping assembly (30), wherein the clamping assembly (30) comprises two vertical plates (310), a sliding rod (330), a second spring (340) and a clamping plate (350), the two vertical plates (310) are symmetrically arranged, the two vertical plates (310) are fixed on two sides of the bottom end of the outer wall of the suction barrel (110) through a clamping ring (320), the sliding rod (330) is slidably connected to the bottom ends of the vertical plates (310), the clamping plate (350) is fixed at the opposite end of the sliding rod (330), the second spring (340) is sleeved outside the sliding rod (330) between the vertical plates (310) and the clamping plate (350), and the clamping plate (350) is clamped to the outer peripheral wall of the quick release joint (210).

9. The detachable pipette as claimed in claim 8, wherein the outer wall of the vertical plate (310) near the top is provided with a locking groove (311), the contact part between the inner wall of the vertical plate (310) and the quick release joint (210) is padded with a rubber pad (312), and the bottom end of the vertical plate (310) is provided with a through hole (313).

10. The removable pipette as recited in claim 9, wherein the outer peripheral wall of the sliding rod (330) is provided with a guide groove (331) matching with the inner wall of the through hole (313), and a pull handle (360) is fixedly arranged at one end of the sliding rod (330) far away from the clamping plate (350).