Gas injection device used in shell

Abstract

The gas injection device used in the shell is characterized by comprising a suction pipe, the suction pipe is communicated with the large head end of a conical cavity, the small head end of the conical cavity is communicated with the end, provided with a conical groove, of a bush, a gap is formed between the outer wall of the conical cavity and the conical groove, the other end of the bush is communicated with one end of a connecting pipe, and the other end of the connecting pipe is communicated with the other end of the connecting pipe. The other end of the connecting pipe is provided with a horn mouth, the lining is sleeved with a shell, an annular air cavity is formed between the shell and the lining, a plurality of air holes extending in the radial direction are formed in the lining, the handle is connected with the shell, and an air inlet channel is formed in the handle in a penetrating mode and communicated with the annular air cavity. Air flow flows to the small end of the conical cavity from the suction pipe at a high speed and finally flows out through the connecting pipe, foreign matter or fine particles near the suction pipe are sucked away, the interior of the shell is kept clean, and the assembling quality and efficiency of mechanical and electrical products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromechanical product assembly, and in particular relates to a gas ejection device used inside a shell. Background Art

[0002] During the assembly process of electromechanical products, foreign matter or fine particles are often found inside the shell. The existing electromechanical product assembly process has high requirements for the cleanliness of complex shells. Generally, a high-flow flushing machine is used for flushing before assembly. If foreign matter is still generated during the assembly process, conventional methods generally use tweezers, pliers, or manual removal. However, due to the internal structure of the shell, it is sometimes difficult to remove the foreign matter, affecting the quality and efficiency of electromechanical product assembly. Utility Model Content

[0003] Therefore, the present invention aims to solve the problem in the prior art that foreign matter or fine particles inside a complex shell are difficult to remove.

[0004] To this end, the technical solution adopted is that the utility model is a gas injection device for the inside of a shell, comprising: a straw, the straw is connected to the large end of the conical cavity, the small end of the conical cavity is connected to one end of the bushing provided with a conical groove, a gap is provided between the outer wall of the conical cavity and the conical groove, the other end of the bushing is connected to one end of the connecting pipe, the other end of the connecting pipe is provided with a bell mouth, the bushing is outerly provided with an outer shell, an annular air cavity is formed between the outer shell and the bushing, a plurality of radially extending air holes are provided on the bushing, a handle is connected to the outer shell, an air intake channel is provided through the handle, and the air intake channel is connected to the annular air cavity.

[0005] Preferably, a protrusion is provided on the handle, the sliding column passes through the protrusion and is slidably connected to the protrusion, and an annular groove is provided on the outer wall of the sliding column.

[0006] Preferably, a guide hole is provided on the convex block, the guide hole is communicated with the air intake channel, the sliding column passes through the guide hole, and a sealing ring is provided on the inner wall of the guide hole.

[0007] Preferably, pressing heads are provided at both ends of the sliding column.

[0008] Preferably, the surface of the pressing head is an arc surface, and an opening extending in the radial direction is provided on the pressing head.

[0009] Preferably, the edges of the handle are chamfered.

[0010] The technical solution of the utility model has the following advantages: since the cross-section of the airflow is rapidly reduced, a high-speed airflow is generated at the small end of the conical cavity, thereby generating low pressure. The airflow must flow out toward the end with lower pressure. The airflow flows from the straw to the small end of the conical cavity at high speed, and finally flows out through the connecting pipe, sucking away foreign matter or fine particles near the straw, keeping the interior of the shell clean, and improving the quality and efficiency of the assembly of electromechanical products.

[0011] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0012] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Among them, 1. Straw; 2. Conical cavity; 3. Bushing; 4. Conical groove; 5. Connecting pipe; 6. Bell mouth; 7. Shell; 8. Annular air cavity; 9. Air hole; 10. Handle; 11. Air inlet channel; 12. Bump; 13. Sliding column; 14. Annular groove; 15. Guide hole; 16. Sealing ring; 17. Pressing head; 18. Opening. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it can be directly or indirectly connected to the other component.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0021] The utility model provides a gas injection device for the interior of a shell, such as Figure 1-2 As shown, it includes: a straw 1, which is connected to the large end of a conical cavity 2, and the small end of the conical cavity 2 is connected to one end of a bushing 3 provided with a conical groove 4. A gap is provided between the outer wall of the conical cavity 2 and the conical groove 4. The other end of the bushing 3 is connected to one end of a connecting pipe 5, and the other end of the connecting pipe 5 is provided with a bell mouth 6. A shell 7 is provided on the outer sleeve of the bushing 3, and an annular air cavity 8 is formed between the shell 7 and the bushing 3. The bushing 3 is provided with a plurality of air holes 9 extending radially. A handle 10 is connected to the shell 7, and an air inlet channel 11 is provided through the handle 10, and the air inlet channel 11 is connected to the annular air cavity 8. The air inlet channel 11 is connected to the air supply end of the air compressor. The shell 7 and the conical cavity 2 are connected by a screw sleeve for easy installation and disassembly. By rotating the screw sleeve, the gap between the outer wall of the conical cavity 2 and the conical groove 4 can be fine-tuned to change the size of the negative pressure. The included angle between the axis of the bell mouth 6 and the horizontal plane is 65 degrees. The bell mouth 6 is connected with the exhaust pipe or the waste box, which is conducive to the discharge of the sucked foreign matter through the bell mouth.

[0022] The working principle and beneficial technical effects of the above technical solution are as follows: compressed air enters from the air inlet channel 11, first enters the annular air cavity 8, then passes through multiple air holes 9, enters the gap between the outer wall of the conical cavity 2 and the conical groove 4, and then enters the small end of the conical cavity. Since the cross-section of the airflow decreases rapidly, a high-speed airflow will be generated at the small end of the conical cavity, thereby generating low pressure. The airflow must flow out toward the end with lower pressure. The airflow flows at high speed from the straw 1 to the small end of the conical cavity, and finally flows out through the connecting pipe 5, sucking away foreign matter or fine particles near the straw 1, keeping the inside of the shell clean, and improving the quality and efficiency of the assembly of electromechanical products.

[0023] In one embodiment, Figure 1-2As shown, the handle 10 is provided with a bump 12. A slide 13 passes through the bump 12 and is slidably connected to the bump 12. An annular groove 14 is provided on the outer wall of the slide 13. By sliding the slide 13, the annular groove 14 moves, thereby changing the flow rate through the intake passage 11 and the generated negative pressure. A guide hole 15 is provided in the bump 12, which communicates with the intake passage 11. The slide 13 passes through the guide hole 15. A sealing ring 16 is provided on the inner wall of the guide hole 15 to improve the sealing and prevent gas leakage. Pressing heads 17 are provided at both ends of the slide 13 to facilitate pressing the slide 13 to adjust the adsorption pressure. The pressing head 17 has a curved surface and is provided with a radially extending opening 18 to increase friction and prevent slipping when pressing. The edges of the handle 10 are chamfered to prevent scratches when grasping.

[0024] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A gas ejection device for use inside a housing, characterized in that: include: A straw (1) is provided, wherein the straw (1) is connected to the large end of the conical cavity (2), the small end of the conical cavity (2) is connected to one end of a bushing (3) provided with a conical groove (4), a gap is provided between the outer wall of the conical cavity (2) and the conical groove (4), the other end of the bushing (3) is connected to one end of a connecting pipe (5), the other end of the connecting pipe (5) is provided with a bell mouth (6), the bushing (3) is provided with an outer shell (7), an annular air cavity (8) is formed between the outer shell (7) and the bushing (3), a plurality of radially extending air holes (9) are provided on the bushing (3), a handle (10) is connected to the outer shell (7), an air inlet channel (11) is provided through the handle (10), and the air inlet channel (11) is connected to the annular air cavity (8).

2. A gas ejection device for use inside a housing according to claim 1, characterized in that: A protrusion (12) is provided on the handle (10), a slide column (13) passes through the protrusion (12) and is slidably connected with the protrusion (12), and an annular groove (14) is provided on the outer wall of the slide column (13).

3. A gas ejection device for use inside a housing according to claim 2, characterized in that: A guide hole (15) is provided on the convex block (12), the guide hole (15) is communicated with the air intake channel (11), the sliding column (13) passes through the guide hole (15), and a sealing ring (16) is provided on the inner wall of the guide hole (15).

4. A gas ejection device for use inside a housing according to claim 2, characterized in that: Pressing heads (17) are provided at both ends of the sliding column (13).

5. A gas ejection device for use inside a housing according to claim 4, characterized in that: The surface of the pressing head (17) is an arc surface, and an opening (18) extending in the radial direction is provided on the pressing head (17).

6. A gas ejection device for use inside a housing according to claim 1, characterized in that: The edges of the handle (10) are chamfered.

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