Negative pressure flow guide ring

Abstract

The utility model discloses a negative pressure flow guide ring which comprises a ring body connected to the bottom end face of a shell and located below the connecting position of a negative pressure pipe connector and the shell. The inverted conical cavity is formed in the upper portion of the inner wall of the ring body, and the conical cavity is communicated with a negative pressure cavity formed by the shell and the spacer ring. According to the scheme, through the ring body, the negative-pressure suction end can accurately correspond to a welding or cutting working position, foreign matter is obliquely guided through the conical cavity, it is guaranteed that the foreign matter is accurately sucked into the negative-pressure cavity, and the suction effect of the foreign matter is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a negative pressure guide ring. Background Art

[0002] With the rapid development of the manufacturing industry, the requirements for product quality are getting higher and higher. Laser welding and cutting, as a widely used process, play a vital role in products. During the laser welding and cutting process, foreign matter such as welding slag and dust will be generated, which will directly or indirectly cause product defects. If these foreign matter are not handled, once defects occur, the entire product will be scrapped, greatly increasing production costs and increasing the burden on factory operations.

[0003] Based on this background, some factories will use negative pressure vacuuming to suck away foreign matter, but according to actual feedback, foreign matter generated during welding cannot be completely removed, and there is no obvious effect on improving product yield; in order to solve the above problems, positive pressure blowing is used to blow up foreign matter, and negative pressure is used to suck foreign matter for dust removal. In order to ensure that negative pressure can accurately absorb foreign matter, a negative pressure guide ring is designed to guide foreign matter and ensure that foreign matter can be fully absorbed. Utility Model Content

[0004] The utility model provides a negative pressure guide ring, which enables the negative pressure suction end to accurately correspond to the welding or cutting working position through the ring body, and guides foreign matter obliquely through the conical cavity to ensure that the foreign matter is accurately sucked into the negative pressure cavity, thereby ensuring the foreign matter suction effect.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] The utility model provides a negative pressure guide ring, comprising:

[0007] A ring body connected to the bottom end surface of the shell, wherein the ring body is located below the connection between the negative pressure pipe joint and the shell;

[0008] An inverted conical cavity is formed at the upper part of the inner wall of the ring body, and the conical cavity is communicated with the negative pressure cavity formed by the outer shell and the spacer ring.

[0009] Optionally, a connecting through hole is provided through the surface of the ring body, and the connecting through hole corresponds to the connecting threaded hole on the bottom end surface of the shell.

[0010] Optionally, a plurality of the connecting through holes are provided, and the plurality of the connecting through holes are evenly distributed around a circle with the axis of the ring body as a reference.

[0011] Optionally, a countersunk hole is provided on the bottom surface of the ring body, and the countersunk hole is connected to the connecting through hole.

[0012] Optionally, the countersunk hole passes through the outer wall of the ring body.

[0013] Optionally, the conical cavity transitions smoothly to the inner wall of the shell.

[0014] The above solution of the utility model includes at least the following beneficial effects:

[0015] The above scheme of the utility model, through the ring body, enables the suction end of the negative pressure to accurately correspond to the welding or cutting working position, and guides the foreign matter obliquely through the conical cavity to ensure that the foreign matter is accurately sucked into the negative pressure cavity, thereby ensuring the suction effect of the foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the negative pressure guide ring provided in the embodiment of the utility model;

[0017] Figure 2 It is a front cross-sectional view of a negative pressure guide ring provided in an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the application of the negative pressure guide ring provided in the embodiment of the utility model;

[0019] Figure 4 yes Figure 3 An enlarged schematic diagram of part A.

[0020] The following are the descriptions of the reference numerals:

[0021] 1. Ring body; 2. Conical cavity; 3. Connecting through hole; 4. Countersunk hole; 5. Shell; 6. Negative pressure cavity; 7. Spacer ring; 8. Negative pressure pipe joint; 9. Connecting threaded hole. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0023] like Figure 1-Figure 4 As shown, the utility model provides a negative pressure guide ring, comprising:

[0024] The ring body 1 is connected to the bottom end surface of the outer shell 5, and the ring body 1 is located below the connection between the negative pressure pipe joint 8 and the outer shell 5;

[0025] The inverted conical cavity 2 is formed on the upper part of the inner wall of the ring body 1 , and the conical cavity 2 is communicated with the negative pressure cavity 6 formed by the outer shell 5 and the spacer ring 7 .

[0026] In this embodiment, when laser welding or cutting is performed, the negative pressure pipe joint 8 is connected to the vacuum pump, and the vacuum pump and the negative pressure pipe joint 8 can create a negative pressure inside the negative pressure chamber 6. By arranging a ring body 1 at the bottom end of the outer shell 5, the suction end of the negative pressure can accurately correspond to the welding or cutting working position, so that the negative pressure can accurately absorb foreign matter; the foreign matter is tilted and guided by the conical cavity 2 to ensure that the foreign matter is accurately sucked into the negative pressure chamber 6, thereby ensuring the absorption effect of the foreign matter.

[0027] like Figure 2 and Figure 4 As shown, in an optional embodiment of the present invention, a connecting through hole 3 is provided through the surface of the ring body 1 , and the connecting through hole 3 corresponds to the connecting threaded hole 9 on the bottom end surface of the shell 5 .

[0028] In this embodiment, the ring body 1 is detachably connected to the housing 5 by connecting the through hole 3 and the connecting threaded hole 9 with screws, so that the ring body 1 can be easily disassembled and cleaned.

[0029] like Figure 1 As shown, in an optional embodiment of the present invention, a plurality of connecting through holes 3 are provided, and the plurality of connecting through holes 3 are evenly distributed around the circumference with the axis of the ring body 1 as a reference.

[0030] In this embodiment, a plurality of connecting through holes 3 are provided to ensure the connection stability between the ring body 1 and the housing 5;

[0031] In practical applications, the connecting through holes 3 are preferably provided with an even number, which can ensure that the force on the ring body 1 is uniform and the connection accuracy between the ring body 1 and the housing 5 is ensured.

[0032] like Figure 2 and Figure 4 As shown, in an optional embodiment of the present invention, a countersunk hole 4 is provided on the bottom surface of the ring body 1 , and the countersunk hole 4 is connected to the connecting through hole 3 .

[0033] In this embodiment, by providing the countersunk hole 4 , the length of the screw inside the connecting through hole 3 can be reduced, and the length of the screw inside the connecting threaded hole 9 can be increased, thereby ensuring the connection stability of the ring body 1 .

[0034] like Figure 2 and Figure 4 As shown, in an optional embodiment of the present invention, the countersunk hole 4 passes through the outer wall of the ring body 1 .

[0035] In this embodiment, the above structure is adopted to facilitate cleaning of the inner wall of the countersunk hole 4 and avoid the deposition of foreign matter on the inner wall of the countersunk hole 4.

[0036] like Figure 4 As shown, in an optional embodiment of the present invention, the conical cavity 2 and the inner wall of the shell 5 are smoothly transitioned.

[0037] In this embodiment, the above structure is adopted to enable foreign matter to accurately enter the negative pressure chamber 6 and to avoid the deposition of foreign matter at the junction of the conical chamber 2 and the inner wall of the shell 5.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A negative pressure guide ring, characterized in that: include: A ring body (1) connected to the bottom end surface of the outer shell (5), wherein the ring body (1) is located below the connection between the negative pressure pipe joint (8) and the outer shell (5); An inverted conical cavity (2) is formed on the upper part of the inner wall of the ring body (1), and the conical cavity (2) is connected to a negative pressure cavity (6) formed by the outer shell (5) and the spacer ring (7).

2. The negative pressure guide ring according to claim 1, characterized in that: A connecting through hole (3) is provided through the surface of the ring body (1), and the connecting through hole (3) corresponds to the connecting threaded hole (9) on the bottom end surface of the outer shell (5).

3. The negative pressure guide ring according to claim 2, characterized in that: A plurality of the connecting through holes (3) are provided, and the plurality of the connecting through holes (3) are evenly distributed on a circumference with the axis of the ring body (1) as a reference.

4. The negative pressure guide ring according to claim 3, characterized in that: The bottom surface of the ring body (1) is provided with a countersunk hole (4), and the countersunk hole (4) is connected to the connecting through hole (3).

5. The negative pressure guide ring according to claim 4, characterized in that: The countersunk hole (4) passes through the outer wall of the ring body (1).

6. The negative pressure guide ring according to claim 1, characterized in that: The conical cavity (2) and the inner wall of the outer shell (5) are smoothly transitioned.

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