Liquid suction transfer tube

Abstract

The utility model relates to a liquid suction transfer tube, and belongs to the technical field of micro liquid transfer instruments. The imbibition transfer tube comprises a silica gel suction nozzle, a transfer needle and an operating handle, a silica gel suction nozzle is clamped at one end of the operating handle; a transfer needle is inserted into one end of the silica gel suction nozzle; an assembly counter bore is formed in one end of the operating handle; and an expansion joint is arranged above one end of the assembly counter bore. The liquid suction transfer pipe is compact in structure and ingenious in design, liquid transfer operation can be completed by holding the operating handle in the working process, the problems that an existing transfer pipe is not fine enough in operation, frequent in misoperation and inconvenient to hold by hand are solved, and the liquid suction transfer pipe is particularly suitable for the requirement for transfer of trace liquid.

Description

Technical Field

[0001] This utility model relates to a liquid transfer tube, belonging to the technical field of micro-liquid transfer instruments. Background Technology

[0002] In biological, medical, and industrial applications, microtransfer tubes are required for transferring minute amounts of liquid. Existing transfer tubes generally consist of a transfer needle and a silicone pipette tip. The transfer needle is inserted into one end of the silicone pipette tip. During operation, pressing the silicone pipette tip draws external liquid into the transfer needle under negative pressure, completing the transfer. While existing microtransfer tubes meet these requirements to some extent, they have the following drawbacks:

[0003] First: The transfer needle is quite thin. Currently, operators use a handheld silicone suction nozzle to complete the operation. However, handheld silicone suction nozzles are prone to accidental pressure, leading to frequent misoperations and inconvenience in holding them.

[0004] Second: The existing transfer tubes rely on the operator's experience and feel to determine whether the silicone nozzle is pressed in place, which results in a lack of precision in operation.

[0005] Therefore, it is necessary to develop a new liquid transfer tube to solve the above-mentioned problems of existing transfer tubes. Summary of the Invention

[0006] The purpose of this utility model is to provide a liquid transfer tube with a compact structure and ingenious design to solve the problems of insufficient precision in operation, frequent misoperation, and inconvenience in holding the existing transfer tubes.

[0007] The technical solution of this utility model is:

[0008] A liquid transfer tube includes a silicone suction nozzle, a transfer needle, and an operating handle, characterized in that: a silicone suction nozzle is snapped into one end of the operating handle; a transfer needle is inserted into one end of the silicone suction nozzle; a countersunk hole is provided at one end of the operating handle; and an expansion joint is provided above one end of the countersunk hole.

[0009] The operating handle has a rod-shaped structure and is made of aluminum alloy.

[0010] The operating handle on one side of the expansion joint is provided with a limit groove.

[0011] The limiting groove has transition arc surfaces on both sides.

[0012] The silicone nozzle has an insertion hole at one end; a negative pressure chamber is provided inside the silicone nozzle on one side of the insertion hole; and a transfer needle is installed in the silicone nozzle through the insertion hole.

[0013] The advantages of this utility model are:

[0014] This liquid transfer tube has a compact structure and ingenious design. During operation, liquid transfer can be completed by holding the operating handle. It solves the problems of insufficient operation precision, frequent misoperation and inconvenience of holding the handle that exist in existing transfer tubes. It is particularly suitable for the needs of micro-liquid transfer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 This is a top view of the structure of this utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the structure in the AA direction;

[0019] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0020] Figure 6 This is a schematic diagram of the structure of the silicone suction nozzle of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the operating handle of this utility model;

[0022] Figure 8 for Figure 7 A magnified structural diagram at point C.

[0023] In the diagram: 1. Silicone suction nozzle; 2. Transfer needle; 3. Operating handle; 4. Assembly countersunk hole; 5. Expansion joint; 6. Limiting groove; 7. Transition arc surface; 8. Insertion hole; 9. Negative pressure chamber. Detailed Implementation

[0024] This aspiration and transfer tube includes a silicone pipette tip 1, a transfer needle 2, and an operating handle 3 (see instruction manual appendix). Figure 1 and 2 ).

[0025] The operating handle 3 has a rod-shaped structure and is made of aluminum alloy. One end of the operating handle 3 has a countersunk hole 4; an expansion joint 5 is located above one end of the countersunk hole 4 (see the instruction manual appendix). Figure 7 and 8 ).

[0026] One end of the operating handle 3 is fitted with a silicone suction nozzle 1 via a mounting countersunk hole 4 (see instruction manual appendix). Figure 5 ).

[0027] One end of the silicone suction nozzle 1 is provided with a connector hole 8; a negative pressure chamber 9 is provided inside the silicone suction nozzle 1 on one side of the connector hole 8; a transfer needle 2 is installed in the silicone suction nozzle 1 through the connector hole 8 (see the instruction manual). Figure 5 and 6 When the negative pressure chamber 9 is pressed during operation, a negative pressure state is created inside the silicone suction nozzle 1, thereby achieving the purpose of liquid suction.

[0028] A limit groove 6 is provided on the operating handle 3 on one side of the expansion joint 5. Transition arc surfaces 7 are provided on both sides of the limit groove 6 (see the instruction manual appendix). Figure 8 The purpose of setting the limiting slot 6 is that the negative pressure chamber 9 of the silicone nozzle 1 corresponds to the limiting slot 6, and the silicone nozzle 1 can be pressed from the position of the limiting slot 6 during operation; when the operator's fingertip touches the limiting slot 6 during this process, it means that the silicone nozzle 1 is pressed in place; in this way, the operator can achieve the purpose of consistent pressing amplitude each time, thereby solving the problem of insufficient precision in operation of the existing operation method.

[0029] This aspiration and transfer tube can be operated by holding the handle 3 during operation, thus solving the problem that existing transfer tubes are inconvenient to hold.

[0030] This liquid transfer tube has a compact structure and ingenious design. During operation, liquid transfer can be completed by holding the operating handle 3. It solves the problems of insufficient operation precision, frequent misoperation and inconvenience of holding the existing transfer tubes. It is particularly suitable for the needs of micro-liquid transfer.

Claims

1. A liquid transfer tube, comprising a silicone suction tip (1), a transfer needle (2), and an operating handle (3), characterized in that: One end of the operating handle (3) is fitted with a silicone suction nozzle (1); one end of the silicone suction nozzle (1) is fitted with a transfer needle (2); one end of the operating handle (3) is provided with an assembly countersunk hole (4); an expansion joint (5) is provided above one end of the assembly countersunk hole (4).

2. The liquid transfer tube according to claim 1, characterized in that: The operating handle (3) is rod-shaped and made of aluminum alloy.

3. The liquid transfer tube according to claim 1, characterized in that: A limit slot (6) is provided on the operating handle (3) on one side of the expansion joint (5).

4. The liquid transfer tube according to claim 3, characterized in that: The limiting slot (6) is provided with transition arc surfaces (7) on both sides.

5. A liquid transfer tube according to claim 1, characterized in that: The silicone suction nozzle (1) is provided with a plug hole (8) at one end; a negative pressure chamber (9) is provided inside the silicone suction nozzle (1) on one side of the plug hole (8); a transfer needle (2) is installed in the silicone suction nozzle (1) through the plug hole (8).

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