CN203620656U - Splicing combined gun head - Google Patents

Abstract

The utility model discloses a splicing combined gun head. The gun head comprises a first gun head and a second gun head, wherein the front end of the first gun head extends into a test tube which holds a solution and the first gun head is used for sucking the solution; the second gun head is placed in the test tube; one end of the second gun head is fixedly connected with one end of the first gun head; the included angle between the second gun head and the contact surface of the test tube is smaller than that between the first gun head and the contact surface of the test tube. According to the splicing combined gun head, the second gun head is added on the basis of the conventional gun head to serve as extension, and the included angle between the second gun head and the test tube is smaller than that between the first gun head and the test tube, so that the suction of a trace solution is facilitated; meanwhile, the tip of the second gun head is small and flexible, so that the suction of the trace solution can be facilitated.

Description

A kind of assembled rifle head

Technical field

The utility model relates to pipettor tool, and especially a kind of use for laboratory is for drawing the assembled rifle head of test tube micro solution.

Background technology

Liquid-transfering gun is the one of pipettor, is usually used in pipetting of a small amount of or micro solution in laboratory.As shown in Figure 1, liquid transfer gun head 200 is vertical conical structure to existing liquid-transfering gun structure, and the inlet of its front end is less than the liquid outlet of rear end, and its front end is positioned in the test tube 100 that fills solution 101 solution is drawn.And while only having micro solution, because test tube 100 pipe shafts are longer, liquid level is too low, even if as shown in the figure test tube 100 is tilted, this liquid transfer gun head 200 does not still reach liquid level yet, because the body of a gun deeply in vitro easily pollutes again, therefore move liquid difficulty, it is very inconvenient to operate.

Utility model content

The utility model provides a kind of assembled rifle head, increases a lancet head on the basis of existing rifle head, as prolongation, is more conducive to the absorption of micro solution.

For realizing above object, the technical scheme that the utility model is taked is:

A kind of assembled rifle head, described rifle head comprises the first rifle head, the front end of described the first rifle head deeply fills in the test tube of solution for draw solution, described rifle head further comprises one second rifle head, described the second rifle head is positioned in vitro, and its one end is fixedly connected with one end of the first rifle head, the angle of described the second rifle head and test tube contact-making surface is less than the angle of the first rifle head and this test tube contact-making surface.

Compared with prior art, its beneficial effect is the utility model:

1, on the basis of existing rifle head, increase by a second rifle head, as prolongation, the angle of the second rifle head and test tube is less than the angle of the first rifle head and test tube, is more conducive to the absorption of micro solution.

2, the rifle head point of the second rifle head is less more pliable and tougher, the conveniently absorption to micro solution.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing liquid transfer gun head;

Fig. 2 is the structural representation of a kind of assembled rifle of the utility model head.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.

Embodiment

Please refer to shown in Fig. 2, a kind of assembled rifle head, this rifle head comprises the rifle head 20 and the rifle head 30 that splice and combine, wherein, the structure of rifle head 20 and the structure of existing liquid-transfering gun are similar, its front end deeply fills in the test tube 10 of solution 11 for draw solution 11, rifle head 30 is fixedly connected on the front end of rifle head 20, the angle of rifle head 30 and test tube 10 contact-making surfaces (being the contact-making surface of rifle head 30 and test tube 10) is less than the angle of rifle head 20 and this test tube contact-making surface, adopt this knockdown rifle head, rifle head 30 is as the prolongation of rifle head 20, can go deep into completely contacting with solution 11 in test tube 10, be more conducive to the absorption of micro solution.Meanwhile, the rifle head point of rifle head 30 is less more pliable and tougher, the conveniently absorption to micro solution.

Above-listed detailed description is for the illustrating of the utility model possible embodiments, and this embodiment is not in order to limit protection domain of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the protection domain of this case.

Claims (1)

1. an assembled rifle head, described rifle head comprises the first rifle head (20), the front end of described the first rifle head (20) deeply fills in the test tube (10) of solution (11) for draw solution (11), it is characterized in that, described rifle head further comprises one second rifle head (30), described the second rifle head (30) is positioned in test tube (10), and its one end is fixedly connected with one end of the first rifle head (20), the angle of described the second rifle head (30) and test tube (10) contact-making surface is less than the angle of the first rifle head (20) and this test tube (10) contact-making surface.

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