Connecting structure of filtering device

Abstract

The utility model relates to a connecting structure of a filtering device, which comprises a connecting matching position arranged between a filtering module and a pump body, and ultrasonic welding is carried out along the connecting matching position to connect the filtering module with the pump body; the connection matching position comprises a plane welding part for carrying out ultrasonic welding along a plane and a vertical surface welding part for carrying out ultrasonic welding along a vertical surface, so that a circle of concave-convex welding seam is formed at the welding position between the filtering module and the pump body; the plane ultrasonic welding is matched with the vertical surface ultrasonic welding, so that the welding strength between the filter module and the pump body is effectively improved, and the connection between the filter module and the pump body is firm and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing oxygen bodies, in particular to a connection structure of a filtering device. Background Art

[0002] In some gas filtration devices or liquid filtration devices on the market, a flat welding part for ultrasonic flat welding is provided between the filter module and the pump body. The filter module and the pump body are fixedly connected simply by ultrasonic welding of the flat welding part. The welding strength of the flat welding is low. When subjected to external forces in non-planar directions (such as acting on the filter module and the pump body in a prying manner, or acting on the filter module and the pump body with a reaction force, etc.), the filter module and the pump body may be separated, that is, there is a technical problem of a loose connection between the filter module and the pump body; therefore, it is necessary to overcome the above problem. Utility Model Content

[0003] The purpose of the utility model is to provide a connection structure of a filter device. In the connection structure, a circle of concave-convex welds is formed on the welding point between the filter module and the pump body. The plane ultrasonic welding and the vertical ultrasonic welding are coordinated to effectively improve the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable.

[0004] The purpose of the utility model is achieved in this way:

[0005] A connection structure of a filter device includes a connection fitting position arranged between a filter module and a pump body, and ultrasonic welding is performed along the connection fitting position to connect the filter module to the pump body; the connection fitting position includes a plane welding portion for ultrasonic welding along a plane and a vertical welding portion for ultrasonic welding along a vertical surface, so as to form a circle of concave-convex welds on the welding point between the filter module and the pump body, and the plane ultrasonic welding and the vertical ultrasonic welding are coordinated to effectively improve the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable.

[0006] A positioning structure is provided between the filter module and the pump body, and the filter module and the pump body are positioned and assembled through the positioning structure; the plane welding part and / or the vertical welding part are provided on the positioning structure.

[0007] The positioning structure includes a protrusion and a groove that are matched with each other; when the filter module is assembled with the pump body, the protrusion and the groove are plugged and matched with each other; the vertical surfaces on the protrusion and the groove that match each other form a vertical surface welding part.

[0008] The positioning structure is arranged on the welding point between the filter module and the pump body, and the positioning structure is a concave-convex structure and is arranged on the welding point to increase the welding area between the filter module and the pump body, thereby increasing the welding strength between the filter module and the pump body. The connection between the filter module and the pump body is firm and reliable, and the positioning is accurate.

[0009] The groove includes a first limiting surface, a second limiting surface, and a limiting bottom wall; the protrusion is limited between the first limiting surface and the second limiting surface, and the protrusion cooperates with the first limiting surface and / or the second limiting surface to form a vertical welding part to strengthen the welding strength between the filter module and the pump body. After welding, the filter module and the pump body are not easy to break. The plane ultrasonic welding and the vertical ultrasonic welding cooperate to effectively improve the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable. There is a gap between the protrusion and the limiting bottom wall to form a screw avoidance space.

[0010] The projection is provided with a tapered guiding slope, through which the projection is guided and positioned on the groove, and the projection can be easily inserted into the groove relatively through the guiding slope; the guiding slope cooperates with the first limiting surface and / or the second limiting surface to form a vertical welding portion.

[0011] There are more than two positioning structures, and the more than two positioning structures are evenly distributed circumferentially between the filter module and the pump body. The filter module and the pump body are accurately positioned and installed through the positioning structures before welding.

[0012] A circumferential protrusion forming a closed loop is provided at the connection position between the filter module and the pump body, and a bump is provided on the circumferential protrusion; a planar welding portion is formed on the top surface of the circumferential protrusion, and the bump is protrudingly arranged on the circumferential protrusion, and a vertical welding portion is formed at the connection between the two sides of the bump and the circumferential protrusion.

[0013] Both sides of the projection are inclined, and the filter module and the pump body are welded together by utilizing the inclined side faces of the projection and the circumferentially raised welding lines.

[0014] The connection and matching position is a closed-loop welding seam arranged between the filter module and the pump body, and the connection and matching position is formed by connecting one or more plane welding parts and one or more vertical welding parts end to end.

[0015] An assembly structure is arranged between the filter module and the pump body, and the assembly structure comprises a connecting column and a connecting cavity; when the filter module is connected to the pump body, the connecting column is inserted into the connecting cavity.

[0016] An air-leakage-proof seal is arranged between the connecting cavity and the connecting column, and a circle of welding line is arranged on the matching position between the connecting cavity and the connecting column.

[0017] The beneficial effects of the utility model are as follows:

[0018] Ultrasonic welding is performed along the connecting fitting position to connect the filter module to the pump body; the connecting fitting position includes a plane welding portion for ultrasonic welding along the plane and a vertical welding portion for ultrasonic welding along the vertical surface, so as to form a circle of concave and convex welds on the welding point between the filter module and the pump body. The plane ultrasonic welding and the vertical ultrasonic welding are coordinated to effectively improve the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable.

[0019] When the filter module and the pump body are ultrasonically welded, the filter module is relatively positioned and installed on the pump body through the positioning structure to enhance the welding strength between the filter module and the pump body. After welding, the filter module and the pump body are not easy to break apart. The filter module and the pump body are positioned and assembled through the positioning structure. The assembly positioning is precise, and the filter module can be easily installed on the pump body in a direction, which has the technical effect of preventing installation mistakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a filtering device in the prior art.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of a filtering device according to an embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of the assembly and decomposition structure of the filter module and the pump body of the filter device in one embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of a filter module of a filter device according to one embodiment of the utility model.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of a filtering device according to one embodiment of the utility model.

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 2-Figure 6The connection structure of the filter device involved in this embodiment includes a connection matching position 3 set between the filter module 1 and the pump body 2, and ultrasonic welding is performed along the connection matching position 3 to connect the filter module 1 and the pump body 2; the connection matching position 3 includes a plane welding part 9 for ultrasonic welding along the plane and a vertical welding part 10 for ultrasonic welding along the vertical surface. In this embodiment, the plane welding part 9 and the vertical welding part 10 are combined with each other to form a circle of concave and convex welds on the welding part between the filter module and the pump body. The combination of plane ultrasonic welding and vertical ultrasonic welding effectively improves the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable.

[0028] A positioning structure 4 is provided between the filter module 1 and the pump body 2, and the filter module 1 and the pump body 2 are positioned and assembled through the positioning structure 4 to strengthen the welding strength between the filter module and the pump body. After welding, the filter module and the pump body are not easy to break off. The filter module and the pump body are positioned and assembled through the positioning structure, and the assembly positioning is precise. The filter module is easy to be installed on the pump body in a directional manner, and has a technical effect of anti-mistake installation; a plane welding part 9 and a vertical welding part 10 are provided on the positioning structure 4 (according to actual needs, the positioning structure 4 can be provided with a plane welding part 9 or a vertical welding part 10).

[0029] The positioning structure 4 includes a protrusion 6 and a groove 7 that are matched with each other in a concave-convex manner; when the filter module 1 is assembled with the pump body 2, the protrusion 6 and the groove 7 are plugged and matched with each other; the vertical surfaces of the protrusion 6 and the groove 7 that match each other form a vertical surface welding part 10. The mutual plugging of the protrusion 6 and the groove 7 can not only play a role in positioning and preventing displacement, but also form a plane and vertical surface welding part, and the structure is simple and reasonable.

[0030] The groove 7 includes a first limiting surface 7.1, a second limiting surface 7.2, and a limiting bottom wall 7.3, and the structural shape of the protrusion 6 matches the structural shape of the groove 7; when the protrusion 6 and the groove 7 are plugged into each other, the protrusion 6 is limited left and right between the first limiting surface 7.1 and the second limiting surface 7.2, and the left and right side planes of the protrusion 6 cooperate with the first limiting surface 7.1 and the second limiting surface 7.2 (the first limiting surface 7.1 or the second limiting surface 7.2) to form a vertical welding part 10, and the protrusion 6 and the limiting bottom wall 7.3 have a gap and form a screw avoidance position.

[0031] The left and right sides (or either side) of the protrusion 6 are provided with tapered guiding slopes 8, and the protrusion 6 is guided and positioned by the guiding slopes 8 to be inserted into the groove 7; the guiding slopes 8 cooperate with the first limiting surface 7.1 and the second limiting surface 7.2 (the first limiting surface 7.1 or the second limiting surface 7.2) to form a vertical welding portion 10.

[0032] In this embodiment, the filter module 1 is provided with a protrusion 6 protruding from its end surface, and the pump body 2 is provided with a groove 7 sunken into its end surface.

[0033] There are more than two groups of positioning structures 4 . In this embodiment, four groups of positioning structures 4 are provided. The four groups of positioning structures 4 are evenly distributed in the circumferential direction between the filter module 1 and the pump body 2 .

[0034] A circumferential protrusion 13 forming a closed loop is provided on the connection fitting position 3 between the filter module 1 and the pump body 2, and a bump 6 is provided on the circumferential protrusion 13; a planar welding portion 9 is formed on the top surface of the circumferential protrusion 13, and the bump 6 is protrudingly arranged on the circumferential protrusion 13, and a vertical welding portion 10 is formed at the connection between the two sides of the bump 6 and the circumferential protrusion 13.

[0035] The end face edges of the filter module 1 and the pump body 2 cooperate with each other and form another planar welding part 9, that is, the outer edge of the top assembly end face of the filter module 1 and the outer edge of the bottom assembly end face of the pump body 2 correspond to each other up and down to form a planar welding part 9 on the plane.

[0036] The connection and matching position 3 is a closed-loop weld seam arranged between the filter module 1 and the pump body 2. The connection and matching position 3 is formed by connecting one or more planar welding parts 9 and one or more vertical welding parts 10 end to end, thereby forming a circle of concave-convex welds. The combination of planar ultrasonic welding and vertical ultrasonic welding effectively improves the welding strength between the filter module and the pump body, and the connection between the filter module and the pump body is firm and reliable.

[0037] An assembly structure is provided between the filter module 1 and the pump body 2 , and the assembly structure includes a connecting column 11 and a connecting cavity 12 ; when the filter module 1 is connected to the pump body 2 , the connecting column 11 is inserted into the connecting cavity 12 .

[0038] In this embodiment, the connecting column 11 is protrudingly arranged on the top of the pump body 2, a concave cavity is arranged on the filter module 1, and the connecting cavity 12 is extended upward from the bottom wall of the concave cavity. The protrusion 6 is arranged on the edge of the concave cavity.

[0039] An air-leakage-proof seal is provided between the connecting cavity 12 and the connecting column 11 , and a circle of welding line is provided on the matching position between the connecting cavity 12 and the connecting column 11 .

[0040] In this embodiment, a circle of welding line is provided on the plane matching position between the connecting cavity 12 and the connecting column 11 .

[0041] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A connection structure of a filter device, comprising a connection fitting position (3) arranged between a filter module (1) and a pump body (2), and ultrasonic welding is performed along the connection fitting position (3) to connect the filter module (1) and the pump body (2); characterized in that: The connection fitting position (3) comprises a plane welding portion (9) for ultrasonic welding along a plane and a vertical surface welding portion (10) for ultrasonic welding along a vertical surface.

2. The connection structure of the filter device according to claim 1, characterized in that: A positioning structure (4) is provided between the filter module (1) and the pump body (2), and the filter module (1) and the pump body (2) are positioned and assembled via the positioning structure (4); the positioning structure (4) is provided with the plane welding portion (9) and / or the vertical welding portion (10).

3. The connection structure of the filter device according to claim 2, characterized in that: The positioning structure (4) comprises a protrusion (6) and a groove (7) which are matched with each other in a concave-convex manner; when the filter module (1) and the pump body (2) are assembled, the protrusion (6) and the groove (7) are plugged into and matched with each other; and the vertical surfaces on the protrusion (6) and the groove (7) which match each other form a vertical surface welding portion (10).

4. The connection structure of the filter device according to claim 3, characterized in that: The groove (7) comprises a first limiting surface (7.1), a second limiting surface (7.2), and a limiting bottom wall (7.3); the protrusion (6) is limited left and right between the first limiting surface (7.1) and the second limiting surface (7.2); the protrusion (6) cooperates with the first limiting surface (7.1) and / or the second limiting surface (7.2) to form a vertical welding portion (10); and a gap is provided between the protrusion (6) and the limiting bottom wall (7.3) to form a screw avoidance position.

5. The connection structure of the filter device according to claim 4, characterized in that: The projection (6) is provided with a tapered guiding inclined surface (8), and the projection (6) is guided and positioned on the groove (7) by the guiding inclined surface (8); the guiding inclined surface (8) cooperates with the first limiting surface (7.1) and / or the second limiting surface (7.2) to form a vertical welding portion (10).

6. The connection structure of the filter device according to claim 3, characterized in that: More than two positioning structures (4) are provided, and the more than two positioning structures (4) are evenly distributed in the circumferential direction between the filter module (1) and the pump body (2).

7. The connection structure of the filter device according to claim 1, characterized in that: A circumferential protrusion (13) forming a closed loop is provided on the connection fitting position (3) between the filter module (1) and the pump body (2), and a protrusion (6) is provided on the circumferential protrusion (13); a planar welding portion (9) is formed on the top surface of the circumferential protrusion (13), the protrusion (6) is protrudingly arranged on the circumferential protrusion (13), and a vertical welding portion (10) is formed at the connection between the two sides of the protrusion (6) and the circumferential protrusion (13).

8. The connection structure of the filter device according to claim 1, characterized in that: The connection fitting position (3) is a closed ring weld provided between the filter module (1) and the pump body (2), and the connection fitting position (3) is formed by connecting one or more plane welding parts (9) and one or more vertical welding parts (10) end to end.

9. The connection structure of the filter device according to claim 1, characterized in that: An assembly structure is provided between the filter module (1) and the pump body (2), the assembly structure comprising a connecting column (11) and a connecting cavity (12); when the filter module (1) is connected to the pump body (2), the connecting column (11) is inserted into the connecting cavity (12).

10. The connection structure of the filter device according to claim 9, characterized in that: An air leakage-proof seal is provided between the connecting cavity (12) and the connecting column (11), and a circle of welding line is provided on the matching position between the connecting cavity (12) and the connecting column (11).

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