CN213467841U

CN213467841U - Liquid transfer device

Info

Publication number: CN213467841U
Application number: CN202021163258.0U
Authority: CN
Inventors: 马永江
Original assignee: Guangzhou Jetway Biotech Co ltd
Current assignee: Guangzhou Jetway Biotech Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-06-18
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses a pipettor, which comprises a liquid moving button, a rotating shaft, a handle, a display frame, a chute, a sleeve, a connecting port and a main body, wherein the control button is fixedly connected with the rotating shaft, the rotating shaft is sleeved with the main body, the handle is fixedly connected with one side of the top end of the main body, and the display frame is arranged on one side of the main body; the top of the rotating shaft is sleeved with a limiting ring; the upper part of the limiting ring is provided with at least one guide groove; the bottom of the liquid moving button is provided with a convex block; the lug is positioned on the limiting ring; the liquid moving button is rotatably arranged at the top of the rotating shaft. Through setting up this spacing ring, the position that liquid moved the button is injectd to can not press to the main part at will, avoid the extrusion to have moved and get the sample. The test method has the advantages that the misoperation probability of the pipettor in the test is reduced, the success rate and the reliability of the test are greatly improved, and a guarantee is provided for the research of various related subjects.

Description

Liquid transfer device

Technical Field

The utility model belongs to the test equipment field, concretely relates to pipettor.

Background

Pipettors are commonly used for moving small amounts or trace amounts of liquid in laboratories, have different specifications, are matched with pipettors of different sizes to use suction heads of different sizes, have slightly different shapes produced by different manufacturers, and have basically the same working principle and operation method. However, the problem that the top button is pressed by mistake easily occurs in the existing pipettor, so that the sucked liquid is pushed out, and the operation of moving the liquid is required to be carried out again; more seriously, the wrong button pressing is not found, so that the liquid is pushed out, namely, the amount of the liquid to be removed is insufficient, and the test can fail to influence the subsequent integral structure.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem among the prior art, the utility model provides a pipettor, it can effectively avoid the mistake to press the problem, the going on smoothly of assurance test.

A pipettor comprises a liquid moving button, a rotating shaft, a display frame, a sliding chute, a sleeve and a main body, wherein the control button is fixedly connected with the rotating shaft, the rotating shaft is sleeved with the main body, and the display frame is arranged on one side of the main body; the sleeve is arranged at the bottom of the main body, and the lower end of the sleeve is a connecting port connected with the suction head; the top of the rotating shaft is sleeved with a limiting ring, the upper part of the limiting ring is provided with at least one guide groove, the bottom of the liquid moving button is provided with a lug, and the lug is positioned on the limiting ring; the liquid moving button is rotatably arranged at the top of the rotating shaft.

Preferably, the top of the main body is provided with a ring groove for placing the limit ring.

Preferably, a circle of groove is arranged on the sleeve; a ring body is arranged in the groove, and the width of the ring body is smaller than the groove width of the groove; the outer part of the ring body protrudes out of the groove, and a sleeve disassembling rod extends out of the outer part of the ring body; when the suction head is arranged on the connecting port, the motion trail of the sleeve unloading rod is interfered.

Preferably, the inner cavity of the main body is provided with a suction cavity and a circumferentially extending reading cavity arranged on the inner wall of the main body, and the display frame is positioned on the outer wall of the reading cavity; a measuring range sheet capable of moving up and down and moving circumferentially is arranged in the reading cavity; the measuring range piece is connected with the rotating shaft through a transverse connecting structure.

Preferably, different precision mark areas are circumferentially arranged on the inner wall of the suction cavity facing the display frame, and the longitudinal direction of each precision mark area is provided with the range of the liquid volume under the precision.

Preferably, the device also comprises a suction head; the suction head body comprises a connecting part and a suction part; the outer wall of the connecting portion extends out of an outer sleeve body wrapping the suction portion, and the outer sleeve body is connected with the connecting portion through an easy-to-dismount groove.

Preferably, the main body is externally provided with a non-slip pad.

Preferably, the device further comprises a handle, and the handle is fixedly connected with one side of the top end of the main body.

Compared with the prior art, the beneficial effects of the utility model are that:

pipettor, through setting up the spacing ring, liquid moves the position of getting the button and is injectd to can not press to the main part at will, avoid the extrusion to move and get the sample. The test method has the advantages that the misoperation probability of the pipettor in the test is reduced, the success rate and the reliability of the test are greatly improved, and a guarantee is provided for the research of various related subjects.

Drawings

Fig. 1 is a schematic structural diagram of a pipette according to the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1 according to the present invention;

fig. 3 is an enlarged view of a portion B of fig. 1 according to the present invention;

fig. 4 is a schematic view of the arrangement structure of the measuring range sheet of the present invention;

fig. 5 is a schematic view of the structure of the suction head of the present invention.

Wherein:

1-liquid moving button; 11-a bump; 2-a rotating shaft; 3-measuring range piece; 4, a non-slip mat; 5-display frame; 6, a limiting ring; 61-a guide groove; 7-a ring body; 71-removing the loop bar; 8, sleeving a sleeve; 81-groove; 9, a connecting port; 10-suction head.

101-an outer casing; 102-groove.

Detailed Description

The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.

As shown in fig. 1 to fig. 3, a liquid transfer device of the present invention includes a liquid transfer button, a rotating shaft, a handle, a display frame, a sliding groove, a sleeve, a connector, and a main body.

Liquid is moved and is got button and pivot fixed connection, and the pivot cup joints with the main part, and handle and main part top one side fixed connection show the frame setting and be in main part one side. The sleeve is arranged at the bottom of the main body, and the lower end of the sleeve is a connecting port connected with the suction head.

The top cover of pivot is equipped with the spacing ring, and the top of main part is provided with the annular that is used for placeeing the spacing ring, and the spacing ring is fixed to be set up in the annular. The upper portion of spacing ring is equipped with at least one guiding groove, and the bottom that the button was taken in to liquid is provided with the lug, and the lug is located on the spacing ring, the button was taken in to liquid rotates the top that sets up at the pivot. Through setting up this spacing ring, the position that liquid moved to get the button is injectd to can not press to the main part at will, avoid the extrusion to move to get the sample, guaranteed that the experiment goes on smoothly.

The outer wall of the sleeve is provided with a circle of grooves, ring bodies are arranged in the grooves, the width of each ring body is smaller than the groove width of each groove, the outer portions of the ring bodies protrude out of the grooves, and sleeve unloading rods extend out of the outer portions of the ring bodies. When the suction head is arranged on the connecting port, the motion trail of the sleeve loading and unloading rod is interfered. The ring body can be fixed and can move on the optional position of the axial direction of the groove, the ring body is moved in the axial direction, the sleeve unloading rod is driven to move, the sleeve unloading rod presses the suction head and pushes the suction head to leave the connecting port, the whole structure is simple, and the suction head can be quickly and effectively unloaded. Because the ring body is positioned at the lower part of the liquid-moving device, the ring body can be manually moved to enable the suction head to be separated only when the suction head is really required to be detached, and the condition that the suction head is detached by mistake due to mistaken pressing can be avoided.

As a preferred embodiment, the inner cavity of the main body is provided with a suction cavity and a reading cavity extending in the circumferential direction, and the reading cavity is arranged on the inner wall of the main body; the rotating shaft is positioned in the suction cavity. The display frame is arranged on the outer wall of the reading cavity, a measuring range sheet which can move up and down and move circumferentially is arranged in the reading cavity, and the measuring range sheet is connected with the rotating shaft through a transverse connecting rod. Different precision identification areas are circumferentially arranged on the inner wall of the suction cavity facing the display frame, and the longitudinal direction of each precision identification area is provided with the range of the liquid volume under the precision. The precision identification area is consistent with the pipetting quantity precision which can be achieved by rotating the rotating shaft, and the measuring range of each precision is also consistent with the measuring range in the identification area of the corresponding precision; because the measuring range piece and the rotating shaft are relatively fixed, the position of the measuring range piece in the precision identification area can be observed through the display frame, and the liquid volume of the liquid transferred at present can be read.

Pipettor, when lieing in the assurance test, misoperation reduces, so be provided with the slipmat in the main part outside, in the assurance test personnel work process, can stably use the pipettor, guarantee going on smoothly experimental once more.

In a preferred embodiment, when the pipette is used, the tip must be attached to enable normal use. In some tests with higher precision, the suction head needs to be prevented from being polluted; therefore, the following improvements are made to the suction head: the suction head comprises a suction head body, and the suction head body comprises a connecting part and a suction part. The outer wall of the connecting portion extends out of an outer sleeve body wrapping the suction portion, and the outer sleeve body is connected with the connecting portion through an easy-to-dismount groove. The portion is inhaled in the overcoat body parcel, inhales the portion promptly and can avoid external pollution, only when really needing to use, the overcoat body under the manual dismantlement of testing personnel (easy detachable groove is actually that the plastic body that makes the junction between connecting portion and the overcoat body is thinner, can make both easily separate), and direct the use of coming into operation has avoided the pollution problem in a large number.

The utility model discloses an use: use pipettor during, move earlier the liquid and get the button and rotate the position that the lug card on it goes into the guide way, then press the liquid and move and get the button, the pipettor can absorb liquid smoothly.

When the suction head of the utility model is installed, the outer sleeve body is moved transversely, and the outer sleeve body can be easily separated from the suction head due to the existence of the easy-disassembly groove, namely the suction head can be normally used; when the suction head needs to be dismounted, namely the ring body is manually moved downwards, the sleeve dismounting rod presses the suction head and pushes the suction head to leave the connecting port, and then the suction head can be dismounted.

Finally, if the size of the liquid displacement amount needs to be obtained, only the indication reading of the measuring range sheet in the display needs to be observed.

Through the structure, the misoperation probability of the pipettor in the test is reduced, the success rate and the reliability of the test are greatly improved, and a guarantee is provided for the research of various related subjects.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims

1. A liquid transfer device is characterized by comprising a liquid transfer button, a rotating shaft, a display frame, a sliding chute, a sleeve and a main body, wherein the liquid transfer button is fixedly connected with the rotating shaft, the rotating shaft is sleeved with the main body, and the display frame is arranged on one side of the main body; the sleeve is arranged at the bottom of the main body, and the lower end of the sleeve is a connecting port connected with the suction head; the top of the rotating shaft is sleeved with a limiting ring, the upper part of the limiting ring is provided with at least one guide groove, the bottom of the liquid moving button is provided with a lug, and the lug is positioned on the limiting ring; the liquid moving button is rotatably arranged at the top of the rotating shaft.

2. The pipette of claim 1, wherein the top of the body is provided with an annular groove for receiving the stop collar.

3. The pipette of claim 1, wherein the sleeve is provided with a ring of grooves; a ring body is arranged in the groove, and the width of the ring body is smaller than the groove width of the groove; the outer part of the ring body protrudes out of the groove, and a sleeve disassembling rod extends out of the outer part of the ring body; when the suction head is arranged on the connecting port, the motion trail of the sleeve unloading rod is interfered.

4. The pipette according to claim 1 or 3, wherein the inner cavity of the main body is provided with a suction cavity and a circumferentially extending reading cavity arranged on the inner wall of the main body, and the display frame is positioned on the outer wall of the reading cavity; a measuring range sheet capable of moving up and down and moving circumferentially is arranged in the reading cavity; the measuring range piece is connected with the rotating shaft through a transverse connecting structure.

5. The pipette according to claim 4, wherein the suction cavity is circumferentially provided with different precision marking regions towards the inner wall of the display frame, and the longitudinal direction of each precision marking region is provided with the range of the liquid volume at the precision.

6. The pipette of claim 1, further comprising a tip, the tip comprising a tip body; the suction head body comprises a connecting part and a suction part; the outer wall of the connecting portion extends out of an outer sleeve body wrapping the suction portion, and the outer sleeve body is connected with the connecting portion through an easy-to-dismount groove.

7. The pipette according to any one of claims 1 to 3 and 5, wherein the body is externally provided with a non-slip pad.

8. The pipette of claim 1, further comprising a handle fixedly connected to one side of the top end of the body.