Suction head for pipettor
By combining a liquid-blocking cap and a rubber leak-proof gasket on the pipette tip, the problem of liquid leakage after use is solved, achieving both sealing and anti-contamination effects.
Patent Information
- Application Number
- CN202520229107.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing pipette tips are prone to leaving liquid residue after use, leading to liquid leakage and environmental pollution.
A suction tip with a liquid-blocking cap was designed. By rotating the liquid-blocking cap, the baffle seals the suction port. Combined with a rubber leak-proof gasket and a sealing ring, the suction port is kept sealed when it is pulled out to prevent liquid leakage.
It effectively avoids liquid leakage, prevents environmental pollution, and improves sealing performance and ease of operation after use.
Smart Images
Figure CN223683572U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to experimental equipment technical field, concretely is a kind of suction head for pipettor. BACKGROUND
[0002] In medical, medicine, gene and protein research, biological research, medicine development laboratory and other biotechnological application fields, pipettor is often used to manipulate laboratory samples in various laboratory operation procedures, which uses pipettor to suck a certain volume of liquid into pipette, and then distributes the liquid into one or more distribution volumes, the principle of pipettor is a piston movement, when the suction head is assembled on the pipettor, the piston in the pipettor sucks a section of air, and the suction head will simultaneously suck a section of liquid with the same volume.The whole process requires that the pipettor and the suction head are sealed, the inner wall of the suction head and the outer wall of the pipette nozzle part are completely matched, to ensure the sealing of the communication space.
[0003] The existing pipettor suction head is mainly a hollow tubular article made of polyethylene material, a connecting pipe is formed at one end, and a suction pipe is formed at the other end, the connecting pipe is used for the insertion of the nozzle of the pipettor, and the suction pipe is used for sucking liquid.After the use of the suction head is completed, liquid is easily left in the interior, and when the suction head is pulled off from the pipettor, the liquid in the interior of the suction head is easily thrown out through the suction pipe, so that environmental pollution is easily caused if the experimental liquid is contaminated. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a suction head for pipettor to solve the above problems.
[0005] The utility model realizes the above-mentioned purpose by the following technical scheme, a suction head for pipettor, including suction head body, the suction head body is tubular and the diameter gradually decreases from one end to the other end, the suction head body one end is provided with connecting pipe, the other end is provided with suction pipe, the suction pipe is rotatably connected with the liquid resistance cover, the suction pipe is opened with liquid suction mouth, the liquid resistance cover is provided with the baffle for closing liquid suction mouth and the opening for communicating with liquid suction mouth, the baffle, opening and liquid suction mouth are all semicircular, the radius of baffle, opening is all greater than the radius of liquid suction mouth.
[0006] As a further setting of the utility model, the baffle is provided with leak-proof gasket, the leak-proof gasket is made of rubber material.
[0007] As a further setting of the utility model, the outer circumferential wall of the suction pipe is opened with annular groove, the inner circumferential wall of the liquid resistance cover is provided with convex ring, and the convex ring is rotatably connected inside the annular groove.
[0008] As a further setting of the utility model, a plurality of anti-skid grooves are formed on the outer circumferential wall of the liquid resistance cover.
[0009] As a further setting of the utility model, the connecting pipe is internally provided with a sealing rubber ring.
[0010] As a further setting of the utility model, the suction head body is made of PP material.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] The utility model discloses after using, can hold and rotate the liquid resistance cover, make the baffle rotate to the position above the liquid suction mouth, until the liquid suction mouth is completely covered, realize the closure to the liquid suction mouth, then again pull down the suction head from the pipettor, because the liquid suction mouth is closed, can avoid liquid throwing, avoid liquid leakage, prevent environmental pollution. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 For the structure of the utility model Figure 1 ;
[0014] Figure 2 For the structure of the utility model Figure 2 ;
[0015] Figure 3 For the structure of the suction head body and the liquid resistance cover in the utility model;
[0016] Figure 4 For Figure 3 The enlarged structure schematic view of A in the utility model;
[0017] Figure 5 For the structure of the liquid resistance cover in the utility model.
[0018] Reference signs: 1, suction head body;2, connecting pipe;3, suction pipe;4, liquid resistance cover;5, liquid suction mouth;6, baffle;7, opening;8, leakproof gasket;9, annular groove;10, convex ring;11, antiskid groove;12, sealing rubber ring. DETAILED DESCRIPTION
[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.
[0020] Please refer to Figure 1As shown, a tip for a pipette, comprising a tip body 1 made of PP material, good flexibility and high strength, so as to ensure the structural strength of the tip body 1, so that the tip has good durability, the tip body 1 is tubular and the diameter gradually decreases from one end to the other end, a connecting pipe 2 is arranged at one end of the tip body 1, and a suction pipe 3 is arranged at the other end, a sealing rubber ring 12 is arranged inside the connecting pipe 2, the sealing rubber ring 12 is made of butyronitrile rubber, so that when the nozzle of the pipette is inserted into the inside of the connecting pipe 2, the sealing rubber ring 12 will tightly resist the sidewall of the nozzle, and the sealing effect is achieved, so that the combination of the tip and the nozzle is more closely, avoiding liquid leakage.
[0021] Please refer to Figures 1-5 As shown, the liquid blocking cover 4 is rotatably connected to the suction pipe 3, the liquid suction port 5 is arranged on the suction pipe 3, the baffle 6 for closing the liquid suction port 5 and the opening 7 for communicating with the liquid suction port 5 are arranged on the liquid blocking cover 4, the baffle 6, the opening 7 and the liquid suction port 5 are semicircular, and the radius of the baffle 6 and the opening 7 is greater than the radius of the liquid suction port 5, so that when the tip is used, the liquid blocking cover 4 can be held and rotated, so that the opening 7 is rotated to the position above the liquid suction port 5, so that the opening 7 is communicated with the liquid suction port 5, and the liquid is sequentially sucked into the inside of the tip body 1 through the opening 7 and the liquid suction port 5, which is convenient to operate, and after the tip is used, the liquid blocking cover 4 can be held and rotated, so that the baffle 6 is rotated to the position above the liquid suction port 5, until the liquid suction port 5 is completely covered, the liquid suction port 5 is closed, and then the tip is pulled off from the pipette, because the liquid suction port 5 is closed, so that liquid can be prevented from being thrown out, liquid leakage can be avoided, environmental pollution can be prevented, the leak-proof gasket 8 is arranged on the baffle 6, and the leak-proof gasket 8 is made of rubber material and has good elasticity, so that after the liquid suction port 5 is closed by the baffle 6, the leak-proof gasket 8 will tightly resist the suction pipe 3, so as to avoid liquid flowing out through the gap between the baffle 6 and the liquid suction port 5, and a good sealing effect is achieved, a plurality of anti-skid grooves 11 are arranged on the outer peripheral wall of the liquid blocking cover 4, so as to greatly increase the friction coefficient of the outer peripheral wall of the liquid blocking cover 4, so that the liquid blocking cover 4 is not easy to slip when held and rotated, and the operation is relatively easy and labor-saving, wherein the annular groove 9 is arranged on the outer peripheral wall of the suction pipe 3, the convex ring 10 is arranged on the inner peripheral wall of the liquid blocking cover 4, and the convex ring 10 is rotatably connected inside the annular groove 9, so that when the liquid blocking cover 4 is rotated, the convex ring 10 will rotate inside the annular groove 9, so that through the limiting of the annular groove 9 to the convex ring 10, the firmness of the connection of the liquid blocking cover 4 on the suction pipe 3 can be ensured, and the smooth rotation of the liquid blocking cover 4 on the suction pipe 3 can be ensured.
[0022] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0023] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.
Claims
1. A suction head for a pipette, comprising a suction head body (1), the suction head body (1) being tubular and gradually decreasing in diameter from one end to the other, the suction head body (1) being provided with a connecting tube (2) at one end and a suction tube (3) at the other end, characterized in that: The liquid suction pipe (3) is rotationally connected with a liquid blocking cover (4), the liquid suction pipe (3) is provided with a liquid suction opening (5), the liquid blocking cover (4) is provided with a baffle (6) for closing the liquid suction opening (5) and an opening (7) for communicating with the liquid suction opening (5), the baffle (6), the opening (7) and the liquid suction opening (5) are all semicircular, and the radius of the baffle (6) and the opening (7) is greater than the radius of the liquid suction opening (5).
2. A tip for a pipette according to claim 1, characterized in that: The baffle (6) is provided with a leakage-proof gasket (8) made of rubber material.
3. A tip for a pipette according to claim 1, wherein: The outer peripheral wall of the liquid suction pipe (3) is provided with an annular groove (9), and the inner peripheral wall of the liquid blocking cover (4) is provided with a convex ring (10) rotationally connected in the annular groove (9).
4. The tip for a pipette of claim 1, wherein: The outer peripheral wall of the liquid blocking cover (4) is provided with a plurality of anti-skid grooves (11).
5. The tip for a pipette according to claim 1, wherein: The connecting pipe (2) is internally provided with a sealing rubber ring (12).
6. The tip for a pipette according to claim 1, wherein: The suction head body (1) is made of PP material.