An air inlet structure for a kit

Abstract

The present invention relates to an air inlet structure of a kit, which includes an air inlet connecting pipe and a plugging pipe arranged at one end of the air inlet connecting pipe. An air nozzle plug is arranged in the plugging pipe in an interference fit manner. The air nozzle plug is provided with an air inlet blind hole along the axis, and the opening end of the air inlet blind hole faces the air inlet connecting pipe. The structure of the present invention is simple and convenient to use.

Description

Technical Field

[0001] The present invention relates to an air inlet structure for a kit. Background Art

[0002] Most of the existing air path connection joints are inverted cone joints and quick-connect joints. When using an inverted cone joint, it is difficult to install the air pipe, which is not conducive to quick installation. The quick-connect joint can achieve quick installation of the air pipe, but the quick-connect joint itself requires sufficient installation space and is inconvenient to install in a narrow space. Summary of the Invention

[0003] The purpose of the present invention is to provide an air inlet structure for a kit with a simple structure and convenient use.

[0004] The present invention adopts the following technical scheme: An air inlet structure for a kit, which includes an air inlet connecting pipe and a plugging pipe arranged at one end of the air inlet connecting pipe. An air nozzle plug is arranged in the plugging pipe in an interference fit manner. The air nozzle plug is provided with an air inlet blind hole along the axis, and the opening end of the air inlet blind hole faces the air inlet connecting pipe.

[0005] Further, the air inlet connecting pipe and the plugging pipe are annular pipes, and the air nozzle plug is a cylinder.

[0006] Further, a sealing boss is arranged on the outer side wall of the air nozzle plug along the circumferential direction.

[0007] Further, there are two sealing bosses.

[0008] Further, the air inlet blind hole includes a frustum-shaped air inlet hole and a cylindrical air inlet hole that are connected to each other. The cylindrical air inlet hole has a blind end. The small bottom end of the frustum-shaped air inlet hole is connected to the cylindrical air inlet hole, and the large bottom end of the frustum-shaped air inlet hole is the opening end.

[0009] Further, the diameter of the small bottom end of the frustum-shaped air inlet hole is equal to the diameter of the cylindrical air inlet hole.

[0010] Further, the material of the air nozzle plug is an elastomeric sealing material.

[0011] The beneficial effect of the present invention is that the sealing effect of the present invention is good, and at the same time, due to the adoption of the air inlet blind hole design, it is easier to puncture the air needle. Brief Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the invention.

[0013] Figure 2 It is a schematic structural diagram of the air nozzle plug of the present invention.

[0014] Figure 3 It is a schematic side structural diagram of the air nozzle plug of the present invention. Detailed implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] As Figures 1 to 3 shown, an air inlet structure of a kit includes an air inlet connecting pipe 1 and a plugging pipe 2 provided at one end of the air inlet connecting pipe 1. An air nozzle plug 3 is arranged in the plugging pipe 2 by interference fit. The air nozzle plug 3 is provided with an air inlet blind hole along the axis, and the opening end of the air inlet blind hole faces the air inlet connecting pipe 1.

[0017] The air inlet connecting pipe 1 and the plugging pipe 2 are annular pipes, and the air nozzle plug 3 is a cylinder. A sealing boss 4 is arranged on the outer side wall of the air nozzle plug 3 along the circumferential direction. There are two sealing bosses 4.

[0018] The air inlet pipe is communicated with the air inlet 8 of the kit 7. The air nozzle plug plugs the plugging pipe, blocking the communication between the air inlet pipe and the outside. When in use, a hypodermic needle pierces the air nozzle plug to connect the air inlet with the air inlet connecting pipe. The sealing boss extrudes the inner side wall of the plugging pipe outward to achieve sealing.

[0019] The air inlet blind hole includes a frustum-shaped air inlet hole 5 and a cylindrical air inlet hole 6 that are communicated with each other. The cylindrical air inlet hole 6 has a blind end. The small bottom end of the frustum-shaped air inlet hole 5 is connected to the cylindrical air inlet hole 6, and the large bottom end of the frustum-shaped air inlet hole 5 is the opening end. The diameter of the small bottom end of the frustum-shaped air inlet hole 5 is equal to the diameter of the cylindrical air inlet hole 6.

[0020] When the hypodermic needle pierces, the tip of the hypodermic needle pierces into the middle of the air nozzle plug. After the hypodermic needle passes through the blind end of the cylindrical air inlet hole, it enters the air inlet connecting pipe through the cylindrical air inlet hole and the frustum-shaped air inlet hole, completing the connection between the air inlet and the air inlet of the kit. The air inlet blind hole makes the middle thickness of the air nozzle plug thinner, making it easier for the needle tip of the hypodermic needle to pierce in. The cylindrical air inlet hole is convenient for positioning during puncture. The opening of the frustum-shaped air inlet hole is larger, avoiding the left and right shaking of the hypodermic needle during the puncture process, causing the needle tip of the hypodermic needle to insert into the side wall of the air inlet blind hole, resulting in blockage of the hypodermic needle. It should be noted that the outer circular part of the air nozzle plug cannot be thinned, which will reduce its sealing performance.

[0021] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air inlet structure of a kit, characterized in that, It includes an intake connecting pipe (1) and a plugging pipe (2) arranged at one end of the intake connecting pipe (1). An air nozzle plug (3) is arranged in the plugging pipe (2) by interference fit. The air nozzle plug (3) is provided with an intake blind hole along its axis. The opening end of the intake blind hole faces the intake connecting pipe (1). The intake connecting pipe (1) is communicated with the intake port (8) of the reagent kit (7). The intake connecting pipe (1) and the plugging pipe (2) are annular pipes, and the air nozzle plug (3) is a cylinder. A sealing boss (4) is arranged on the outer side wall of the air nozzle plug (3) along the circumferential direction. There are two sealing bosses (4). The intake blind hole includes a frustum-shaped intake hole (5) and a cylindrical intake hole (6) that are communicated with each other. The cylindrical intake hole (6) has a blind end. The small bottom end of the frustum-shaped intake hole (5) is connected to the cylindrical intake hole (6), and the large bottom end of the frustum-shaped intake hole (5) is the opening end.

2. The air inlet structure of a kit according to claim 1, characterized in that, The diameter of the small bottom end of the frustum-shaped intake hole (5) is equal to the diameter of the cylindrical intake hole (6).

3. The intake structure of a kit according to claim 1, wherein , The material of the air nozzle plug (3) is an elastomeric sealing material.

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