Liquid pipettor capable of rapidly replacing different types of gun heads

Abstract

The utility model discloses a liquid pipettor capable of quickly replacing different types of gun heads. The liquid pipettor comprises a fixed tube, a push tube and a connecting tube, the push pipe is sleeved with the fixed pipe, the push pipe is sleeved with the connecting pipe, the push pipe is movably connected with the connecting pipe relative to the fixed pipe, a first push part is formed between the lower end face of the fixed pipe and the outer wall of the lower side of the push pipe, and a second push part is formed between the lower end face of the push pipe and the outer wall of the lower side of the connecting pipe; the bottom of the connecting pipe is used for being connected with an external gun head of one type in a sleeved mode, the upper side of the pushing pipe is used for being connected with an external power source, and the bottom of the pushing pipe is used for being connected with an external gun head of another type in a sleeved mode. The liquid suction gun has the advantages that one type of gun head is fixed at the bottom of the push tube, or the other type of gun head is fixed at the bottom of the connecting tube, so that the liquid suction gun can be compatible with two or more types of gun heads, and different amounts of liquid can be sucked conveniently; the first pushing part can automatically push out the gun head at the bottom of the pushing pipe, the second pushing part can automatically push out the gun head at the bottom of the connecting pipe, and replacement is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to a liquid pipette capable of quickly replacing gun tips of different models. Background Art

[0002] The liquid pipette sucks liquid from one container through the gun tip at the bottom and moves it to another container. When sucking different amounts of liquid, the required gun tip diameter is different. Currently, only one type of gun tip can be replaced at the bottom of the liquid pipette, and it is not compatible with two or more types of gun tips. At the same time, the existing liquid pipette is complicated to replace the gun tip and cannot be replaced automatically. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a liquid pipette capable of quickly replacing gun tips of different models in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] A liquid pipette for quickly replacing gun tips of different models comprises a fixed tube, a push tube and a connecting tube; the fixed tube is sleeved outside the push tube, the connecting tube is sleeved inside the push tube, the push tube is movably connected relative to the fixed tube and the connecting tube, a first pushing portion is formed between the lower end surface of the fixed tube and the lower outer wall of the push tube, and a second pushing portion is formed between the lower end surface of the push tube and the lower outer wall of the connecting tube; the top of the connecting tube is used to be connected to an external piston rod, the bottom of the connecting tube is used to be sleeved for an external gun tip of one model, the upper side of the push tube is used to be connected to an external power source, and the bottom of the push tube is used to be sleeved for an external gun tip of another model.

[0006] A preferred solution is that an annular groove is provided on the outer wall of the connecting pipe, a sealing ring is provided in the annular groove, and the sealing ring is in close contact with the inner wall of the push tube.

[0007] The liquid pipette for quickly replacing different types of gun tips provided by the embodiment of the utility model has at least the following beneficial effects: a gun tip of one type is fixed to the bottom of the push tube, or a gun tip of another type is fixed to the bottom of the connecting tube, which can be compatible with two or more types of gun tips, making it convenient to aspirate different amounts of liquid; the first pushing part can automatically push out the gun tip at the bottom of the push tube for easy replacement, and the second pushing part can automatically push out the gun tip at the bottom of the connecting tube for easy replacement.

[0008] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of the utility model;

[0010] Figure 2 It is a cross-sectional view of the utility model;

[0011] Figure 3 It is an exploded view of the utility model;

[0012] Figure 4 It is a stereoscopic diagram of a type of gun head and the utility model when fixed;

[0013] Figure 5 yes Figure 4 A cross-sectional view of

[0014] Figure 6 It is a stereoscopic diagram of another type of gun head when it is fixed with the utility model;

[0015] Figure 7 yes Figure 6 sectional view of . DETAILED DESCRIPTION

[0016] In order to explain the idea and purpose of the present application, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", "left", "right", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0018] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0019] like Figures 1 to 7As shown, an embodiment of the present application provides a liquid pipette for quickly replacing different types of gun tips, including a fixed tube 10, a push tube 20 and a connecting tube 30; the fixed tube 10 is sleeved on the outside of the push tube 20, and the connecting tube 30 is sleeved inside the push tube 20, and the push tube 20 is movably connected relative to the fixed tube 10 and the connecting tube 30, and a first pushing portion 11 is formed between the lower end surface of the fixed tube 10 and the lower outer wall of the push tube 20, and a second pushing portion 21 is formed between the lower end surface of the push tube 20 and the lower outer wall of the connecting tube 30; the top of the connecting tube 30 is used to be connected to an external piston rod, and the bottom of the connecting tube 30 is used to be sleeved for an external gun tip 40 of one type, the upper side of the push tube 20 is used to be connected to an external power source, and the bottom of the push tube 20 is used to be sleeved for an external gun tip 40 of another type.

[0020] like Figures 1 to 7 As shown, the lower side of the push tube 20 extends out of the lower end surface of the fixed tube 10, and a first push portion 11 is formed between the lower end surface of the fixed tube 10 and the lower outer wall of the push tube 20. The lower side of the connecting tube 30 extends out of the lower end surface of the push tube 20, and a second push portion 21 is formed between the lower end surface of the push tube 20 and the outer wall.

[0021] like Figures 1 to 7 As shown, when it is necessary to inhale liquid, the external fixer fixes several gun heads 40 of one model, the utility model moves downward as a whole, the lower side of the push tube 20 is inserted into the gun head 40 of this model, the lower side of the push tube 20 is interference fit with the inner wall of the gun head 40 of this model, and then the utility model moves upward as a whole, the gun head 40 of this model is extended into a certain liquid, the external piston rod moves upward, and the liquid is sucked into the connecting tube 30 from the gun head 40 of this model, and then the utility model moves to another liquid loader, the external piston rod moves downward, and the liquid in the connecting tube 30 is injected into the liquid loader, when it is necessary to replace or remove the gun head 40 of this model, the external power source drives the push tube 20 to move upward, at this time, the first pushing part 11 pushes out the gun head 40 of this model, so that the gun head 40 of this model is separated from the push tube 20.

[0022] like Figures 1 to 7As shown, when it is necessary to replace another type of gun tip 40, the external fixer fixes several gun tips 40 of another type, the utility model moves downward as a whole, the lower side of the connecting tube 30 is inserted into the gun tip 40 of this type, and the lower side of the connecting tube 30 is interference fit with the inner wall of the gun tip 40 of this type. Then the utility model moves upward as a whole, the gun tip 40 of this type is extended into a certain liquid, the external piston rod moves upward, and the liquid is sucked into the connecting tube 30 from the gun tip 40 of this type. Then the utility model moves to another liquid loader, the external piston rod moves downward, and the liquid in the connecting tube 30 is injected into the liquid loader. When it is necessary to replace or remove the gun tip 40 of this type, the external power source drives the push tube 20 to move downward. At this time, the second pushing part 21 pushes out the gun tip 40 of this type, so that the gun tip 40 of this type is separated from the connecting tube 30.

[0023] like Figures 1 to 7 As shown, the first pusher 11 can automatically push out the gun head 40 at the bottom of the push tube 20 for easy replacement, and the second pusher 21 can automatically push out the gun head 40 at the bottom of the connecting tube 30 for easy replacement.

[0024] like Figures 1 to 7 As shown, a gun head 40 of one type is fixed to the bottom of the push tube 20, or a gun head 40 of another type is fixed to the bottom of the connecting tube 30. The outer diameter of the gun head 40 at the bottom of the connecting tube 30 is smaller than the outer diameter of the gun head 40 at the bottom of the push tube 20.

[0025] like Figures 1 to 7 As shown, the present invention is therefore compatible with two or more types of gun tips 40, making it convenient to suck in different amounts of liquid.

[0026] like Figures 1 to 7 As shown, the outer wall of the connecting tube 30 is provided with an annular groove 31, and a sealing ring is provided in the annular groove 31, and the sealing ring is in close contact with the inner wall of the push tube 20. When a gun head 40 of a certain type is fixed to the bottom of the push tube 20, the sealing ring is in close contact with the inner wall of the push tube 20, the external piston rod moves upward, and the liquid is sucked into the connecting tube 30 from the gun head 40 of this type. After that, the utility model moves to another liquid loader, the external piston rod moves downward, and the liquid in the connecting tube 30 is injected into the liquid loader. When the gun head 40 of this type needs to be replaced or removed, the external power source drives the push tube 20 to move upward, and the sealing ring plays a sealing role.

[0027] like Figures 1 to 7 As shown, the bottom of the push tube 20 is provided with a first inclination angle along the length direction, and the first inclination angle facilitates the push tube 20 to be inserted into a gun head 40 of one type, and is convenient for installation. The bottom of the connecting tube 30 is provided with a second inclination angle along the length direction. The second inclination angle facilitates the connecting tube 30 to be inserted into a gun head 40 of another type, and is convenient for installation.

[0028] The above is a specific implementation of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A liquid pipette for quickly changing different types of gun tips, characterized in that: It includes a fixed tube, a push tube and a connecting tube; the fixed tube is sleeved outside the push tube, the connecting tube is sleeved inside the push tube, the push tube is movably connected relative to the fixed tube and the connecting tube, a first pushing portion is formed between the lower end surface of the fixed tube and the lower outer wall of the push tube, and a second pushing portion is formed between the lower end surface of the push tube and the lower outer wall of the connecting tube; the top of the connecting tube is used to connect with an external piston rod, the bottom of the connecting tube is used to be sleeved with an external gun head of one model, the upper side of the push tube is used to connect with an external power source, and the bottom of the push tube is used to be sleeved with an external gun head of another model.

2. The liquid pipette for quickly changing different types of gun tips according to claim 1, characterized in that: An annular groove is arranged on the outer wall of the connecting pipe, a sealing ring is arranged in the annular groove, and the sealing ring is in close contact with the inner wall of the push pipe.

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