CN211274693U

CN211274693U - Multi-channel pipettor for biological medicine component detection

Info

Publication number: CN211274693U
Application number: CN201922063772.0U
Authority: CN
Inventors: 张建新
Original assignee: Nanjing Fine Medical Technology Co ltd
Current assignee: Nanjing Fine Medical Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-08-18
Anticipated expiration: 2029-11-26

Abstract

The utility model belongs to the technical field of move the liquid device, especially, be a biological medicine composition detects uses multichannel pipettor, including the pipettor body, connect side by side on the pipettor body and be used for the suction nozzle connecting piece of imbibition and with the suction head subassembly of suction nozzle connecting piece looks adaptation, the suction nozzle connecting piece includes connector, spacing end and suction nozzle tube head, the connector is connected on the suction head frame of pipettor body, the suction nozzle tube head is connected with the connector through spacing end, the surface of spacing end is equipped with the annular groove, the surface top-down of suction nozzle tube head is equipped with first outer ring protruding subassembly and the protruding subassembly of second outer ring in proper order. The utility model discloses a connected mode of lock joint makes the suction nozzle more stable with the joint end of suction head, and the matching degree is higher, is difficult for making the suction head drop, through inlay a sealing washer of dress respectively from top to bottom at suction nozzle and suction head joint end face, makes the leakproofness of its joint end higher, can ensure the accuracy nature when moving the liquid.

Description

Multi-channel pipettor for biological medicine component detection

Technical Field

The utility model relates to a move liquid device technical field, specifically be a biological medicine composition detects uses multichannel pipettor.

Background

A pipette, also known as a pipette gun, is a device for transferring liquid quantitatively. In conducting analytical testing studies, small or minute amounts of liquid are typically removed using a pipette. Pipettes can be divided into gas piston pipettes and external piston pipettes according to the principle. The gas piston type pipettor is mainly used for standard pipetting, and the external piston type pipettor is mainly used for treating special liquids such as volatile liquid, easy corrosion and viscous liquid.

In the process of detecting the biological medicine components, a multi-channel pipettor is generally adopted for carrying out the transferring operation, so that the transferring efficiency can be improved. However, the conventional multi-channel pipettor has a single structure, poor connection stability between the suction nozzle and the suction head, easy falling off of the suction head, poor sealing performance of the joint end and incapability of ensuring the accuracy during pipetting.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a biological pharmaceutical composition detects uses multichannel pipettor has solved current multichannel pipettor single structure, and the suction nozzle is not good with the stability of being connected of suction head, easily causes droing of suction head, and the joint end leakproofness is relatively poor, can not ensure the problem of the accuracy nature when moving the liquid.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a multi-channel pipettor for detecting biological drug components comprises a pipettor body, a suction nozzle connecting piece which is connected to the pipettor body side by side and used for sucking liquid, and a suction head assembly matched with the suction nozzle connecting piece, wherein the suction nozzle connecting piece comprises a connecting head, a limiting end head and a suction nozzle tube head, the connecting head is connected to a suction head frame of the pipettor body, the suction nozzle tube head is connected with the connecting head through the limiting end head, an annular groove is formed in the surface of the limiting end head, a first outer ring protruding assembly and a second outer ring protruding assembly are sequentially arranged on the outer surface of the suction nozzle tube head from top to bottom, sealing rings are arranged on the first outer ring protruding assembly and the second outer ring protruding assembly, the suction head assembly comprises a conical suction head and a buckling end, the buckling end is connected to the upper end of the conical suction head, the inner wall surface of the conical suction head is sequentially provided with a first clamping groove group and a second clamping groove group which are respectively matched with the first outer ring protrusion component and the second outer ring protrusion component from top to bottom, and a sealing clamping groove matched with the sealing ring is arranged on the inner wall of the conical suction head corresponding to the position between the first clamping groove group and the second clamping groove group.

As a preferred technical scheme of the utility model, the pipettor body comprises lotion brake valve lever subassembly and piston assembly, and piston assembly comprises a plurality of passageway subassemblies that set up side by side, is equipped with piston assembly in the passageway, and piston assembly includes a piston section of thick bamboo, piston rod and piston, and the lower extreme of piston rod extends to in the piston section of thick bamboo and with arrange the piston connection in the piston section of thick bamboo in, and the upper end of piston rod is connected with brake valve lever assembly's push rod.

As a preferred technical scheme of the utility model, the external diameter of connector and spacing end equals, the external diameter of suction nozzle tube head is less than the external diameter of connector and spacing end.

As a preferred technical scheme of the utility model, first outer ring bulge subassembly and second outer ring bulge subassembly constitute by two interval arrangement's bulge loop, are formed with the spacing groove between two bulge loops, the sealing washer inlays the dress in the inside of sealing washer.

As an optimized technical proposal of the utility model, the surface of the outer wall at the top end of the conical suction head is provided with a friction sleeve convex ring plate.

(III) advantageous effects

Compared with the prior art, the utility model provides a biological medicine composition detects uses multichannel pipettor possesses following beneficial effect:

this biological medicine composition detects uses multichannel pipettor adopts the connected mode of lock joint to make the joint end of suction nozzle and suction head more stable, and the matching degree is higher, is difficult for making the suction head drop, through inlay respectively about suction nozzle and suction head joint end face and adorn a sealing washer, makes the leakproofness of its joint end higher, accuracy nature when can ensureing to move the liquid.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure between the nozzle connecting member and the suction head assembly of the present invention;

fig. 3 is an exploded view of the nozzle connector and the suction head assembly of the present invention.

In the figure: 100. a pipettor body; 200. a suction nozzle connecting piece; 201. a connector; 202. a limiting end; 2021. an annular groove; 203. a suction nozzle tube head; 2031. a first outer ring lobe assembly; 2032. a second outer ring lobe assembly; 300. a suction head assembly; 301. a conical suction head; 3011. a first card slot group; 3012. a second card slot group; 3013. sealing the clamping groove; 302. buckling and connecting ends; 3021. an annular chuck; 303. a friction sleeve raised ring plate; 400. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a multi-channel pipette for detecting biological medicine components comprises a pipette body 100, a suction nozzle connecting piece 200 which is connected to the pipette body 100 side by side and used for sucking liquid and a suction head component 300 matched with the suction nozzle connecting piece 200, wherein the suction nozzle connecting piece 200 comprises a connecting head 201, a limiting end head 202 and a suction nozzle end head 203, the connecting head 201 is connected to a suction head frame of the pipette body 100, the suction nozzle end head 203 is connected with the connecting head 201 through the limiting end head 202, an annular groove 2021 is arranged on the surface of the limiting end head 202, a first outer ring convex component 2031 and a second outer ring convex component 2032 are sequentially arranged on the outer surface of the suction nozzle end head 203 from top to bottom, a sealing ring 400 is arranged on the first outer ring convex component 2031 and the second outer ring convex component 2032, the suction head component 300 comprises a conical suction head 301 and a fastening end 302, the fastening end 302 is connected to the upper end of the conical suction, the inner wall surface of the conical suction head 301 is sequentially provided with a first clamping groove group 3011 and a second clamping groove group 3012 which are respectively matched with the first outer ring protrusion component 2031 and the second outer ring protrusion component 2032 from top to bottom, and a sealing clamping groove 3013 matched with the sealing ring 400 is arranged on the inner wall of the conical suction head 301 corresponding to the space between the first clamping groove group 3011 and the second clamping groove group 3012.

In this embodiment, the nozzle connection 200 is an elastic nozzle, the elastic loading function of which optimizes the operating force for fitting and removing the suction head.

Specifically, pipettor body 100 comprises lotion brake valve lever subassembly and piston assembly, and piston assembly comprises a plurality of passageway subassemblies that set up side by side, is equipped with piston assembly in the passageway, and piston assembly includes piston cylinder, piston rod and piston, and the lower extreme of piston rod extends to in the piston cylinder and is connected with the piston of arranging in the piston cylinder, and the upper end and the push rod of brake valve lever subassembly of piston rod are connected.

In this embodiment, adopt independent piston structure, make every passageway dismantle alone, the flexibility is higher, can save cost of maintenance.

Specifically, the outer diameters of the connector 201 and the limiting end 202 are equal, and the outer diameter of the nozzle tip 203 is smaller than the outer diameters of the connector 201 and the limiting end 202.

Specifically, the first outer ring protrusion component 2031 and the second outer ring protrusion component 2032 are each composed of two protruding rings arranged at intervals, a limiting groove is formed between the two protruding rings, and the sealing ring 400 is embedded inside the sealing ring 400.

In this embodiment, the two convex rings can play a role in stably clamping the sealing ring 400, and in practical application, the outer diameter of the sealing ring 400 is larger than that of the convex ring, and the outer surfaces of the convex ring and the sealing ring 400 are tightly attached to the inner wall of the conical suction head 301, so that the sealing effect of the joint end is better.

Specifically, the surface of the outer wall of the top end of the conical suction head 301 is provided with a friction sleeve convex ring plate 303.

In this embodiment, the friction sleeve raised ring plate 303 is provided to allow for the installation or removal of the tip assembly 300.

The utility model discloses a theory of operation and use flow: when the suction head component 300 is loaded, firstly, two sealing rings 400 are respectively assembled in a limiting groove between a first outer ring convex component 2031 and a second outer ring convex component 2032, then, the suction nozzle connecting piece 200 is vertically corresponding to the suction head component 300, then, an annular clamping head 3021 on a buckling end 302 is buckled in an annular groove 2021 on a limiting end 202, so that the stable loading of the suction head is realized, at the moment, the first outer ring convex component 2031 and the second outer ring convex component 2032 are respectively embedded in a first clamping groove group 3011 and a second clamping groove group 3012 on the inner wall of the conical suction head 301, and the sealing rings 400 are positioned between the limiting groove and a sealing clamping groove 3013, so that the sealing connection of the suction nozzle and the suction head joint end is realized, when the suction head is assembled or disassembled, the operation is carried out by holding a friction sleeve convex ring plate 303 on the suction head component 300, so that the suction head assembling.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a biological medicine composition detects uses multichannel pipettor, includes pipettor body (100), connects side by side on pipettor body (100) and be used for the suction nozzle connecting piece (200) of imbibition and with suction nozzle connecting piece (200) looks adaptation suction head subassembly (300), its characterized in that: the suction nozzle connecting piece (200) comprises a connecting head (201), a limiting end head (202) and a suction nozzle pipe head (203), the connecting head (201) is connected to a suction head frame of the pipette body (100), the suction nozzle pipe head (203) is connected with the connecting head (201) through the limiting end head (202), an annular groove (2021) is formed in the surface of the limiting end head (202), a first outer ring convex component (2031) and a second outer ring convex component (2032) are sequentially arranged on the outer surface of the suction nozzle pipe head (203) from top to bottom, a sealing ring (400) is arranged on the first outer ring convex component (2031) and the second outer ring convex component (2032), the suction head component (300) comprises a conical suction head (301) and a fastening end (302), the fastening end (302) is connected to the upper end of the conical suction head (301), an annular clamping head (3021) elastically fastened with the annular groove (2021) is arranged inside the fastening end (302), the inner wall surface of the conical suction head (301) is sequentially provided with a first clamping groove group (3011) and a second clamping groove group (3012) which are respectively matched with the first outer ring protrusion component (2031) and the second outer ring protrusion component (2032) from top to bottom, and a sealing clamping groove (3013) matched with the sealing ring (400) is arranged between the first clamping groove group (3011) and the second clamping groove group (3012) on the inner wall of the conical suction head (301).

2. A multi-channel pipette for detecting a biological drug component according to claim 1, wherein: the pipettor body (100) is composed of a washing liquid control handle assembly and a piston assembly, the piston assembly is composed of a plurality of channel assemblies arranged side by side, a piston assembly is arranged in each channel, each piston assembly comprises a piston cylinder, a piston rod and a piston, the lower end of each piston rod extends into each piston cylinder and is connected with the piston arranged in each piston cylinder, and the upper end of each piston rod is connected with a push rod of the control handle assembly.

3. A multi-channel pipette for detecting a biological drug component according to claim 1, wherein: the external diameter of connector (201) and spacing end (202) equals, the external diameter of suction nozzle tube head (203) is less than the external diameter of connector (201) and spacing end (202).

4. A multi-channel pipette for detecting a biological drug component according to claim 1, wherein: the first outer ring bulge component (2031) and the second outer ring bulge component (2032) are composed of two bulge loops arranged at intervals, a limiting groove is formed between the two bulge loops, and the sealing ring (400) is embedded in the sealing ring (400).

5. A multi-channel pipette for detecting a biological drug component according to claim 1, wherein: and a friction sleeve convex ring plate (303) is arranged on the surface of the outer wall of the top end of the conical suction head (301).