CN218250320U

CN218250320U - Spring reset structure for wide-range multi-channel liquid shifter

Info

Publication number: CN218250320U
Application number: CN202222884761.0U
Authority: CN
Inventors: 文龙; 吴祺; 孙宇; 余凯
Original assignee: Shanghai Oyin Experiment Equipment Co ltd
Current assignee: Shanghai Oyin Experiment Equipment Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-10
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a spring return structure for wide range multichannel pipettor, lower casing including a multichannel pipettor, the upside of casing is provided with a connecting pipe down, the internal mouthpiece of being provided with of inferior valve pushes away the piece, the mouthpiece pushes away the piece and includes a push rod and a push pedal, the push rod sets up the upside in the push pedal, the upper end of push rod sets up in the connecting pipe, the upper portion of push rod is provided with a stroke groove of following its axial setting, the upper end in stroke groove is provided with a flange, the stroke inslot is provided with a spring, the axial setting of push rod is followed to the spring, the spring sets up the downside at the flange, be provided with a separation blade in the connecting pipe, the one end of separation blade stretches into the stroke inslot and extends to the lower extreme of spring. Compared with the prior art, the utility model, its effect is positive and obvious. The wide-range multi-channel pipettor realizes the rebound action of the push plate in the narrow inner space of the shell, and can ensure the smooth push-out of the suction head.

Description

Spring reset structure for wide-range multi-channel liquid shifter

Technical Field

The utility model relates to a chemistry field especially relates to experimental facilities, especially a spring reset structure for wide range multichannel pipettor.

Background

The pipettor is one of instruments commonly used in a biochemical laboratory, is commonly used for moving a small amount of or trace liquid in the laboratory, and pipettors with different specifications are matched with suction heads with different sizes. The common specification of the multi-channel pipettor is the range below 300 mu L, and in the prior art, a return spring of the multi-channel pipettor is arranged on the outer side of a push rod. However, in a large-scale multi-channel pipette of 1000 μ L, the volume of the sample solution container increases, which results in an increase in the occupied space, the return spring outside the push rod collides with the sample solution container, the space in which the return spring moves is small, and the push rod cannot perform the rebound return operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spring reset structure for wide range multichannel pipettor, this kind of a spring reset structure for wide range multichannel pipettor solve the spring reset structure among the prior art and be not suitable for the technical problem that wide range multichannel pipettor, push rod can't kick-back and reset.

The utility model discloses a spring reset structure for wide range multichannel pipettor, lower casing including a multichannel pipettor, the upside of lower casing be provided with a connecting pipe, the internal mouthpiece of being provided with of inferior valve push out the piece, the mouthpiece push out the piece and include a push pedal and a push pedal, the push rod setting be in the upside of push pedal, the upper end setting of push rod be in the connecting pipe, the upper portion of push rod be provided with a stroke groove of setting up along its axial, the upper end in stroke groove be provided with a flange, the stroke inslot be provided with a spring, the spring follow the axial setting of push rod, the spring setting be in the downside of flange, the connecting pipe in be provided with a separation blade, the one end of separation blade stretch into the stroke inslot and extend to the lower extreme of spring.

The working principle is as follows: in transferring the push rod with the position of spring return structure from the push rod outside in the inferior valve body, the user is gripping the messenger and is pressing down the button, and the push rod can together atress promote the push pedal downwards, and the push pedal promotes the suction head and breaks away from the multichannel pipettor, and when the user finger loosened, the push rod can upwards reply under the effect of spring restoring force, drives the push pedal and gets back to mouthpiece department.

Compared with the prior art, the utility model, its effect is positive and obvious. A large-range multi-channel pipettor realizes the rebound resetting action of a push plate in the narrow inner space of the shell, and can ensure that a suction head is smoothly pushed out.

Drawings

Fig. 1 is a lower casing structure schematic diagram of a spring return structure for a wide-range multi-channel pipette of the present invention.

Fig. 2 is a schematic view of a grip handle transmission mechanism of a spring return structure for a wide-range multi-channel pipette of the present invention.

Fig. 3 is a schematic diagram of a spring return structure for a wide-range multi-channel pipette of the present invention.

Fig. 4 is a schematic view of the lower casing assembly effect of the spring return structure for a wide-range multi-channel pipette of the present invention.

Fig. 5 is a schematic view of the explosion effect of the lower casing of the spring-return structure for a wide-range multi-channel pipette of the present invention.

Detailed Description

Example 1

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, the utility model relates to a spring reset structure for wide range multichannel pipettor, casing 1 down including a multichannel pipettor, the upside of casing 1 is provided with a connecting pipe 2 down, be provided with a mouthpiece propelling movement piece in the casing 1 down, mouthpiece propelling movement includes a push rod 3 and a push pedal 4, push rod 3 sets up the upside at push pedal 4, the upper end setting of push rod 3 is in connecting pipe 2, the upper portion of push rod 3 is provided with a stroke groove 5 along its axial setting, the upper end of 5 in stroke groove is provided with a flange, be provided with a spring 6 in stroke groove 5, spring 6 sets up along the axial of push rod 3, spring 6 sets up the downside at the flange, be provided with a separation blade 7 in the connecting pipe 2, the one end of separation blade 7 stretches into in stroke groove 5 and extends to the lower extreme of spring 6.

The working process of the embodiment:

the inner cavity 500 of the lower shell 1 is provided with a plurality of test solution containers 100, the bottom of each test solution container 100 is connected with a nozzle 300, the inner cavity 500 of the lower shell 1 is also provided with a fixing plate 600, the test solution containers 100 are arranged on the fixing plate 600 and used for keeping stable, a suction head 200 is sleeved outside the nozzle 300 during the test, and after the liquid transfer is completed, the suction heads 200 need to be removed;

the upside of connecting pipe 2 on lower casing 1 is connected with a handle, has a button 400 on the handle, and the bottom of button 400 is connected to the upside of push rod 3 through a drive mechanism, when pressing button 400, promotes push rod 3 downwards, and spring 6 atress produces the compression this moment, and push rod 3 drives push pedal 4 downstream downwards, has a plurality of through-hole on the push pedal 4, and mouthpiece 300 passes corresponding through-hole separately. During pipetting, the suction head 200 is sleeved on the lower side of the push plate 4, after pipetting is finished, the push plate 4 pushes downwards, and the suction head 200 is separated from the nozzle 300 under the action of the pushing force; the fingers of the user are loosened on the button 400, the push rod 3 rebounds upwards under the restoring force of the spring 6, and the button 400 and the push plate 4 are respectively driven to return to the original positions.

Claims

1. The utility model provides a spring reset structure for wide range multichannel pipettor, includes lower casing (1) of a multichannel pipettor, the upside of lower casing (1) be provided with a connecting pipe (2), its characterized in that: lower casing (1) in be provided with a mouthpiece and push away the piece, the mouthpiece push away the piece and include a push rod (3) and a push pedal (4), push rod (3) set up the upside of push pedal (4), the upper end setting of push rod (3) in connecting pipe (2), the upper portion of push rod (3) be provided with one along its axial stroke groove (5) that set up, the upper end of stroke groove (5) be provided with a flange, stroke groove (5) in be provided with a spring (6), spring (6) follow the axial setting of push rod (3), spring (6) set up the downside of flange, connecting pipe (2) in be provided with a separation blade (7), the one end of separation blade (7) stretch into stroke groove (5) in and extend to the lower extreme of spring (6).