CN216093739U

CN216093739U - Tip head adapter

Info

Publication number: CN216093739U
Application number: CN202121367559.XU
Authority: CN
Inventors: 尹超; 王行; 许光友; 王建祥; 邓高飞
Original assignee: Wuhan Haoyang Technology Co ltd
Current assignee: Wuhan Haoyang Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-03-22
Anticipated expiration: 2031-06-18

Abstract

The utility model provides a tip adapter which comprises an adapter, wherein the adapter is hollow, the upper end and the lower end of the adapter are arranged in an opening mode, the upper end of the adapter is used for being connected with a liquid transfer assembly in a sealing mode, and the lower end of the adapter is used for being inserted into the upper end of a suction head body; the outer side wall of the middle part of the adaptive head is provided with an annular boss, the middle part of the annular boss is outwards protruded from the upper end and the lower end to form an upper inclined plane and a lower inclined plane, the upper inclined plane and the lower inclined plane extend to the outer side wall of the adaptive head, the upper inclined plane is used for abutting against the lower inclined plane of the suction head body, and the lower end of the adaptive head is limited in the suction head body; the outer side wall of the lower end of the adaptive head is provided with an annular matching part, and the annular matching part is hermetically connected with the suction head body. The technical scheme provided by the utility model has the beneficial effects that: the inclined plane offsets with the bellied decline inclined plane of annular on the annular boss, and is spacing in the suction head originally internally with the adaptation head, realizes that the adaptation head moves firmly of liquid tip head with the anticreep and adheres to and perfect butt joint, can avoid appearing the phenomenon that the anticreep moved liquid tip head and drops under the circumstances of colliding with, and stability is good.

Description

Tip head adapter

Technical Field

The utility model relates to the technical field of pipetting detection equipment, in particular to a tip head adapter.

Background

Currently, pipetting assemblies are often required in the field of medical devices to aspirate a volume of liquid for transfer or mixing. The front end of the pipetting assembly is used for picking up the TIP head, and in order to ensure the accuracy of the volume of each pipetting and avoid the problem that the front end of the TIP head is mixed due to contact with other liquid, the TIP head needs to be replaced after one pipetting is finished.

However, the existing TIP head needs to be hammered and firmly installed when being installed on a pipetting assembly, is inconvenient to install, and is easy to fall off or poor in sealing performance when being collided during use.

SUMMERY OF THE UTILITY MODEL

In view of the above, to solve the above problems, embodiments of the present invention provide a tip header adaptor.

The embodiment of the utility model provides a tip adapter which is characterized by comprising an adapter head, wherein the adapter head is hollow, the upper end and the lower end of the adapter head are arranged in an opening mode, the upper end of the adapter head is used for being connected with a pipetting assembly in a sealing mode, and the lower end of the adapter head is used for being inserted into the upper end of a pipette tip body;

the outer side wall of the middle part of the adapting head is provided with an annular boss, the middle part of the annular boss protrudes outwards from the upper end and the lower end to form an upper inclined plane and a lower inclined plane, the upper inclined plane and the lower inclined plane extend to the outer side wall of the adapting head, the upper inclined plane is used for abutting against the lower inclined plane of the suction head body, and the lower end of the adapting head is limited in the suction head body;

the outer side wall of the lower end of the adaptive head is provided with an annular matching part, and the annular matching part is connected with the suction head body in a sealing mode.

Further, the annular boss and the adapter are coaxially arranged; and/or the presence of a gas in the gas,

the inclination angles of the upper inclined plane of the adapter head and the lower inclined plane of the suction head body are the same.

Further, the inside wall of the upper end of the adapter is provided with an internal thread which is in threaded connection with the liquid transfer assembly.

Further, adaptation head open-top portion department is equipped with the mounting groove rather than the intercommunication, the internal thread is located the mounting groove inside wall, the mounting groove diapire is fixed with the sealing washer, the sealing washer is used for offsetting with move the liquid subassembly.

Furthermore, the side wall of the adapter head is provided with paired wrench grooves in a penetrating manner, and the paired wrench grooves are oppositely arranged on the adapter head.

Further, the wrench groove extends to the upper side of the annular boss, so that the middle part of the annular boss is disconnected and arranged at a plurality of intervals.

Further, the wrench grooves are provided with a plurality of pairs.

Further, a plurality of the wrench grooves are uniformly arranged at intervals in the circumferential direction of the adapter head.

Further, annular cooperation portion is the sealing strip, the first lower extreme lateral wall of adaptation is equipped with the annular mounting groove, the annular mounting groove is located the first periphery of adaptation, the sealing strip install in the annular mounting groove, the sealing strip offsets with the suction head body inside wall.

Further, the sealing strip is used for abutting against the upper side face of the annular sealing part of the suction head body; and/or the presence of a gas in the gas,

the annular mounting groove is coaxial with the adapter.

The technical scheme provided by the embodiment of the utility model has the following beneficial effects: the annular boss upper inclined plane of adaptation head offsets with the bellied decline inclined plane of annular of suction head body, and is spacing in the suction head body with the adaptation head, realizes that the adaptation head moves firmly of liquid tip head with the anticreep and adheres to and perfect butt joint, no longer need hammer dress tip head, can avoid appearing the phenomenon that the anticreep moved liquid tip head and drops under the circumstances of colliding with, and stability is good.

The sealing strip of adaptation head offsets with the annular seal portion of suction head body, restricts at the ascending relative position from top to bottom between suction head body and the adaptation head, surpasss normal mounted position when preventing that the anticreep from moving the installation of liquid tip, ensures to install at every turn that the anticreep moves the liquid tip and can both adorn at same height, avoids the anticreep to move the liquid tip and is installed and become tension or loose excessively. When the anti-dropping liquid-transferring tip head is replaced, the anti-dropping liquid-transferring tip head is only required to be pulled out from the adapter head, so that the anti-dropping liquid-transferring tip head is convenient to replace.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a tip head adaptor provided by the present invention;

FIG. 2 is a schematic structural view of an embodiment of an anti-drop pipette tip for use with the tip adapter of FIG. 1;

fig. 3 is a schematic cross-sectional view of the anti-drop pipette tip of fig. 1 in cooperation with the tip adapter of fig. 2.

In the figure: the anti-drop moves liquid tip head 100, tip head adapter 200, suction head body 1, annular protrusion 2, upper inclined plane 2a, lower inclined plane 2b, annular sealing part 3, bevel connection insertion part 4, strengthening rib 5, annular reinforcing part 6, adaptation head 7, annular boss 8, upper inclined plane 8a, lower inclined plane 8b, annular matching part 9, mounting groove 10, internal thread 10a, sealing washer 11, spanner groove 12, annular mounting groove 13.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a tip head adapter, referring to fig. 2, an embodiment of the present invention provides an anti-drop liquid-transfer tip head, and the anti-drop liquid-transfer tip head provided by the embodiment of the present invention and the tip head adapter are used in cooperation (referring to fig. 3). The anticreep moves liquid tip 100 includes suction head body 1, and tip adapter 200 includes adaptation head 7, adaptation head 7 is cavity and both ends are the opening setting from top to bottom, adaptation head 7 upper end be used for with move liquid subassembly sealing connection, suction head body 1 upper end is used for being connected with adaptation head 7, adaptation head 7 lower extreme is used for inserting inside suction head body 1 upper end.

The outer side wall of the middle of the adaptation head 7 is provided with an annular boss 8, the upper end and the lower end of the middle of the annular boss 8 are arranged in a protruding mode to form an upper inclined plane 8a and a lower inclined plane 8b, and the upper inclined plane 8a and the lower inclined plane 8b extend to the outer side wall of the adaptation head 7. The annular boss 8 and the adapter head 7 are coaxially arranged, and can also be obliquely arranged.

The inner side wall of the upper end of the suction head body 1 is provided with an annular bulge 2, the upper end and the lower end of the middle part of the annular bulge 2 are arranged in an inward protruding mode to form an upper inclined surface 2a and a lower inclined surface 2b, and the upper inclined surface 2a and the lower inclined surface 2b extend to the inner side wall of the suction head body 1. The upper inclined plane 2a and the lower inclined plane 2b may be disposed in an arc shape in cross section, as long as the annular boss 8 of the adapter 7 can slide into the nozzle body 1 along the upper inclined plane 2a and slide out from the upper end of the nozzle body 1 along the lower inclined plane 2 b. In this embodiment, the annular protrusion 2 is disposed in a triangular shape on the cross section, so that the upper inclined surface 2a and the lower inclined surface 2b are disposed in a plane, and the suction head body 1 is stably mounted on the adapter 7. The annular bulge 2 and the suction head body 1 are coaxially arranged, and can also be obliquely arranged.

The top of the suction head body 1 is provided with a bevel insertion part 4, the bevel insertion part 4 is positioned above the annular bulge 2, so that the lower end of the adapter head 7 is inserted into the suction head body 1 along the bevel insertion part 4.

After the lower end of the adaptive head 7 is inserted into the suction head body 1, the lower inclined surface 2b of the suction head body 1 is abutted against the upper inclined surface 8a of the adaptive head 7, and the lower end of the adaptive head 7 is limited in the suction head body 1.

The suction head is characterized in that an annular sealing part 3 is arranged at the upper end of the suction head body 1, the annular sealing part 3 is coaxially arranged with the suction head body 1, and the annular sealing part 3 is located below the annular bulge 2 and is in sealing connection with the adaptive head 7. In other embodiments, the annular sealing portion 3 may be a sealing strip, sealing against the outer side wall of the adapter head 7.

The outer side wall of the lower end of the adaptive head 7 is provided with an annular matching part 9, the annular matching part 9 and the adaptive head 7 are coaxially arranged, and the annular matching part 9 is in sealing connection with the suction head body 1. In other embodiments, the annular mating portion 9 may be a sealing strip, which seals against the inner side wall of the cleaner head body 1. Specifically, for the installation of the sealing strip of convenience, 7 lower extreme lateral walls of adaptation head are equipped with annular mounting groove 13, annular mounting groove 13 with adaptation head 7 is coaxial, annular mounting groove 13 is located 7 peripheries of adaptation head, the sealing strip install in the annular mounting groove 13, the sealing strip offsets with 1 inside wall of suction head body.

In this embodiment, the annular sealing part 3 and the suction head body 1 are integrally formed through injection molding, and the sealing strip is used for abutting against the upper side surface of the annular sealing part 3 of the suction head body 1.

The inclined plane 8a offsets with the lower inclined plane 2b of the protruding 2 of annular of suction head body 1 on the annular boss 8 of adaptation head 7, and is spacing with adaptation head 7 in suction head body 1, realizes that adaptation head 7 and anticreep move firmly of liquid tip head 100 and adhere to and perfect butt joint, no longer need hammer dress tip head, can avoid appearing moving the phenomenon that liquid tip head 100 drops under the circumstances of colliding with, and stability is good.

The sealing strip of adaptation head 7 offsets with the annular seal portion 3 of suction head body 1, restricts at the decurrent relative position between suction head body 1 and the adaptation head 7, surpasss normal mounted position when preventing the anticreep from moving the installation of liquid tip head 100, ensures that the anticreep of installation is moved liquid tip head 100 and can both adorn at same height, avoids the anticreep to move liquid tip head 100 and is installed and too tightly or too loose. When the anti-dropping liquid-transferring tip head 100 is replaced, the anti-dropping liquid-transferring tip head 100 only needs to be pulled out from the adapting head 7, so that the anti-dropping liquid-transferring tip head 100 can be replaced conveniently.

1 upper end lateral wall interval of suction head body is equipped with a plurality of along the strengthening rib 5 of vertical extension, and is a plurality of the strengthening rib 5 is located 2 peripheries of annular protrusion can strengthen the intensity of 1 upper end of suction head body, avoids 1 upper end fracture of suction head body in the installation to influence the leakproofness that the anticreep moved liquid tip 100.

The suction head is characterized in that an annular reinforcing part 6 is arranged at the upper end of the suction head body 1, the annular reinforcing part 6 is positioned below the annular sealing part 3 and is coaxial with the suction head body 1, and the strength of the structure of the suction head body 1 can be enhanced. Install suction head body 1 back on adaptation head 7, because the sealing strip of adaptation head 7 offsets with suction head body 1's annular seal portion 3, the sealing strip can be to suction head body 1 lateral wall outwards expansion certain degree, through being provided with 6 increase structural strength of annular reinforcement, can avoid suction head body 1 lateral wall gap to appear and lead to leaking gas. In this embodiment, annular arch 2, annular sealing portion 3, annular reinforcing part 6 with suction head body 1 is convenient for the production and processing of anticreep liquid-transfering tip head 100 through the integrated into one piece that moulds plastics.

If the distance between the annular sealing part 3 and the annular reinforcing part 6 is too large, the effect of enhancing the strength of the suction head body 1 cannot be achieved, and in the embodiment, the distance between the annular sealing part 3 and the annular reinforcing part 6 in the vertical direction is 0.5-1.5 mm.

Furthermore, the capacity of the suction head body 1 is 10-1000mL, and the large-range suction head can improve the experiment large-capacity liquid transfer efficiency. The inner diameter of a liquid suction port of the suction head body 1 is 0.2-0.75mm, so that the shearing force to a fine sample and the flow resistance to a high-viscosity sample are reduced to a large extent. The length of the sucker body 1 is 51-96mm, and samples can be accessed from a deep narrow container. The material of the suction head body 1 is polypropylene, so that the suction head body 1 has low adsorbability and is suitable for viscous liquid and liquid with small surface tension.

The adaptation head 7 upper end be used for with move liquid subassembly sealing connection, it is concrete, adaptation head 7 upper end inside wall is equipped with internal thread 10a, with move liquid subassembly threaded connection, the installation of the adaptation head 7 of being convenient for is changed. The side wall of the adapting head 7 is provided with paired wrench grooves 12 in a penetrating manner, the paired wrench grooves 12 are oppositely arranged on the adapting head 7, a wrench is inserted into the two opposite wrench grooves 12, the adapting head 7 can be rotated, and the adapting head 7 and the liquid-transferring assembly can be conveniently mounted and dismounted. The wrench grooves 12 are provided with a plurality of pairs, in this embodiment, the wrench grooves 12 are provided with two pairs, the wrench grooves 12 are uniformly arranged at intervals in the circumferential direction of the adapter 7, and the wrench grooves 12 can be flexibly selected to insert a wrench at different angles. The wrench groove 12 extends to the upper part of the annular boss 8, so that the middle part of the annular boss 8 is disconnected and arranged at a plurality of intervals, the elasticity of the adapter head 7 can be increased, and the adapter head 7 can be conveniently inserted into the suction head body 1 and pulled out from the suction head body 1.

7 open-top parts of adaptation head are equipped with rather than the mounting groove 10 that communicates, internal thread 10a is located 10 inside walls of mounting groove, 10 diapire of mounting groove are fixed with sealing washer 11, sealing washer 11 is used for offsetting with moving the liquid subassembly, guarantees the first 7 tops of adaptation and moves the leakproofness between the liquid subassembly.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A tip adapter is characterized by comprising an adapter, wherein the adapter is hollow, the upper end and the lower end of the adapter are arranged in an opening mode, the upper end of the adapter is used for being connected with a pipetting assembly in a sealing mode, and the lower end of the adapter is used for being inserted into the upper end of a pipette tip body;

2. The tip head adapter of claim 1, wherein said annular boss is disposed coaxially with said adapter head; and/or the presence of a gas in the gas,

3. The tip adapter of claim 1, wherein said adapter upper end inner sidewall is internally threaded for threaded connection with said pipetting assembly.

4. The tip adapter of claim 3, wherein the top opening of the adapter is provided with a mounting groove communicated with the top opening, the internal thread is arranged on the inner side wall of the mounting groove, and a sealing ring is fixed on the bottom wall of the mounting groove and used for abutting against a pipetting assembly.

5. The tip head adapter of claim 3, wherein said adapter head side wall is provided with a pair of wrench grooves therethrough, said pair of wrench grooves being oppositely disposed on said adapter head.

6. The tip head adapter of claim 5, wherein the wrench slot extends above the annular boss such that the annular boss is interrupted in a plurality of spaced apart locations.

7. The tip head adapter of claim 5, wherein said wrench slot is provided with a plurality of pairs.

8. The tip head adapter of claim 7, wherein a plurality of said wrench slots are evenly spaced circumferentially about said adapter head.

9. The tip adapter of claim 1, wherein the annular fitting portion is a sealing strip, an annular mounting groove is formed in an outer side wall of a lower end of the adapter, the annular mounting groove is located on the periphery of the adapter, the sealing strip is mounted in the annular mounting groove, and the sealing strip abuts against an inner side wall of the suction head body.

10. The tip adapter of claim 9, wherein said sealing strip is adapted to abut against an upper side of an annular seal of the tip body; and/or the presence of a gas in the gas,

the annular mounting groove is coaxial with the adapter.