Conduit joint
By designing annular side plates, limiting bosses and metal wire drawing grooves in the conduit joints, the problem of prone to cracks in the conduit variable diameter structure is solved, and welding connections with good sealability are achieved, and production efficiency and reliability are improved.
Patent Information
- Application Number
- CN202422479183.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing conduit diameter reduction structure is prone to cracks and cracks when the diameter is large, resulting in product scrapping, increased production costs and reduced production efficiency.
A conduit joint is designed, which is equipped with an annular side plate and a limiting boss around the circular base plate, and a metal drawing groove is installed on the side plate or connecting ring. The siphon principle is used to prevent solder from entering the conduit, and at the same time, the accuracy and consistency of the welding parts are ensured through the limiting boss and connecting ring.
The conduit diameter connection is well sealed and not prone to cracking, which improves the reliability and sealing of welding, reduces production costs, and improves production efficiency.
Smart Images
Figure CN222910462U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catheters, and particularly relates to a catheter joint. Background Art
[0002] At present, for the variable diameter structures of catheters such as D-shaped tubes, most of them adopt the method of spinning for variable diameter. This is more convenient for pipe fittings with smaller variable diameter sizes. However, for catheter structures with larger variable diameters, cracks and ruptures are likely to occur due to their larger variable diameters, ultimately resulting in product scrapping, increased production costs, and reduced production efficiency. Summary of the Utility Model
[0003] The purpose of the utility model is a catheter joint with good sealing performance for catheter variable diameter connection and not prone to crack and rupture.
[0004] The purpose of the utility model is solved as follows:
[0005] A catheter joint, in which a ring-shaped side plate extends from the periphery of a circular bottom plate to one side to form a joint main body with one end open. A circumferentially spaced axial first wire-drawing groove is formed on the inner surface or the outer surface of the side plate by a metal wire-drawing process.
[0006] As a further optimization of the above technical solution, a ring-shaped limiting boss extends outward from the outer side surface of the side plate at the opening.
[0007] As a further optimization of the above technical solution, the depth of the first wire-drawing groove gradually decreases from the root of the limiting boss to the direction of the circular bottom plate.
[0008] As a further optimization of the above technical solution, the shape of the first wire-drawing groove is a triangular pyramid shape.
[0009] As a further optimization of the above technical solution, the ratio of the length of the first wire-drawing groove to the length from the root of the limiting boss to the outer surface of the circular bottom plate is one-fifth to four-fifths.
[0010] As a further optimization of the above technical solution, one or more circular holes are provided on the circular bottom plate.
[0011] As a further optimization of the above technical solution, an inward or outward flange is provided around each circular hole on the circular bottom plate to form a ring-shaped connecting convex ring.
[0012] As a further optimization of the above technical solution, a circumferentially spaced axial second wire-drawing groove is provided on the inner wall of the connecting convex ring.
[0013] As a further optimization of the above technical solution, the ratio of the length of the second wire drawing groove to the height of the connecting convex ring is one-fifth to four-fifths.
[0014] As a further optimization of the above technical solution, the joint body and the connecting convex ring are integrally formed of stainless steel or copper material.
[0015] The prominent advantages of the present utility model compared with the prior art are as follows:
[0016] 1. The stainless steel pipe to be welded can be directly welded after being butt-jointed through the conduit joint of the present utility model. The connection structure is simple and fast, and the production efficiency is high.
[0017] 2. By arranging a wire drawing groove on the welding joint surface, the present utility model utilizes the siphon principle to prevent the solder from entering the conduit to be welded, improves the siphon effect channel, increases the penetration depth, and improves the reliability.
[0018] 3. By arranging a wire drawing groove on the welding joint surface, the present utility model utilizes the siphon principle to make the solder adsorbed near the welding surface. The welding surface is large and the sealing performance is good.
[0019] 4. By arranging a limiting boss or / and a connecting convex ring, the present utility model limits the depth of the stainless steel pipe to be welded extending into the conduit joint, making the welding part accurate and the depth consistent, and facilitating the production of standardized products.
[0020] 5. The structure of the present utility model is simple, convenient for production and manufacturing, has a low production cost, and is suitable for stepped welding connections between stainless steel pipes and between stainless steel pipes and copper pipes. Description of the Drawings
[0021] Figure 1 is a three-dimensional schematic diagram of Embodiment 1 of the present utility model.
[0022] Figure 2 is a cross-sectional schematic diagram of Embodiment 2 of the present utility model.
[0023] Figure 3 is a cross-sectional schematic diagram of Embodiment 3 of the present utility model.
[0024] Figure 4 is a cross-sectional schematic diagram of one of the welding connection structures between Embodiment 3 of the present utility model (with a first wire drawing groove provided on the outer surface of the side plate) and a thick pipe and a thin pipe.
[0025] Figure 5 is a cross-sectional schematic diagram of the second of the welding connection structures between Embodiment 3 of the present utility model (with a first wire drawing groove provided on the outer surface of the side plate) and a thick pipe and a thin pipe.
[0026] Figure 6It is a cross-sectional schematic view of one of the welding connection structures between Embodiment 4 of the present utility model (with a first wire drawing groove provided on the inner surface of the side plate) and a thick pipe and a thin pipe.
[0027] Figure 7 It is a cross-sectional schematic view of the second of the welding connection structures between Embodiment 4 of the present utility model (with a first wire drawing groove provided on the inner surface of the side plate) and a thick pipe and a thin pipe. Specific embodiments
[0028] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. See Figures 1-7 :
[0029] A catheter joint, in which a circular side plate 11 extends to one side around the periphery of a circular bottom plate 10 to form a joint body 1 with an open end 115, and a circumferential and axially arranged first wire drawing groove 111 is provided on the inner surface or the outer surface of the side plate 11 by means of a metal wire drawing process.
[0030] The metal wire drawing process belongs to the prior art. Baidu Encyclopedia records that in metal pressure processing, the technical processing method in which metal is forced to pass through a die under the action of external force, the cross-sectional area of the metal is compressed, and the required cross-sectional area shape and size are obtained is called the metal wire drawing process. The present utility model lies in using the metal wire drawing process to process a circumferential and axial first wire drawing groove 111 on the metal surface, which is a further limitation on the first wire drawing groove 111 and is not an invention and creation of the metal wire drawing process.
[0031] As a further optimization of the above technical solution, a circumferential limiting boss 112 extends outward from the outer side surface of the side plate 11 at the opening 115.
[0032] As a further optimization of the above technical solution, the depth of the first wire drawing groove 111 gradually decreases from the root 113 of the limiting boss 112 towards the direction of the circular bottom plate 10.
[0033] As a further optimization of the above technical solution, the shape of the first wire drawing groove 111 is a triangular pyramid shape.
[0034] As a further optimization of the above technical solution, the ratio of the length of the first wire drawing groove 111 to the length from the root 113 of the limiting boss 112 to the outer surface 102 of the circular bottom plate 10 is one-fifth to four-fifths.
[0035] As a further optimization of the above technical solution, one or more circular holes 101 are provided on the circular bottom plate 10.
[0036] As a further optimization of the above technical solution, an inward flange or an outward flange is provided on the circular bottom plate 10 around each of the circular holes 101 to form an annular connecting convex ring 106, or an annular connecting convex ring 106 is provided on the inner surface 104 of the circular bottom plate 10 around each of the circular holes 101.
[0037] As a further optimization of the above technical solution, a circumferentially spaced circle of axial second wire drawing grooves 107 is provided on the inner wall of the connecting convex ring 106.
[0038] As a further optimization of the above technical solution, the ratio of the length of the second wire drawing groove 107 to the height of the connecting convex ring 106 is one-fifth to four-fifths.
[0039] As a further optimization of the above technical solution, the joint body 1 and the connecting convex ring 106 are made of an integral structure of stainless steel or copper material.
[0040] Adopting the structure of the present utility model Figure 1 shown in the figure, the sealing of the pipe orifice can be realized; adopting the structure of the present utility model Figure 2 shown in the figure, the welding connection of one stainless steel thick pipe and two or more stainless steel thin pipes or copper thin pipes can be realized; adopting the structure of the present utility model Figures 3-4 shown in the figure, the welding connection of one stainless steel thick pipe and one stainless steel thin pipe or copper thin pipe can be realized. For convenient positioning, an annular groove can be provided on the outer surface of the stainless steel thin pipe 30 or the copper thin pipe part inserted into the connecting convex ring 106 to form a positioning boss 301, or a limiting convex ring 302 can be provided on the outer surface of the stainless steel thin pipe 30 or the copper thin pipe at the end face of the connecting convex ring 106 after the stainless steel thin pipe 30 is inserted into the connecting convex ring 106 (see Figure 5 ); adopting the structure of the present utility model Figures 6-7 shown in the figure only welds the stainless steel thick pipe on the inner surface of the side plate 11, while Figures 3-4 shown in the figure welds the stainless steel thick pipe on the outer surface of the side plate 11.
[0041] A welding layer 41 is formed at the joint of the inner wall 105 of the connecting convex ring 106 and the stainless steel thin pipe 30 due to welding, and a welding layer 40 is formed at the joint of the outer surface 114 of the stainless steel thick pipe 20 and the side plate 11 due to welding.
[0042] The present utility model is not only applied to the sealing of the pipe orifice or the connection of the thick pipe and the thin pipe, but also applicable to the welding connection of the thin pipe at any opening on the axis of the thick pipe.
[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still make simple substitutions or modifications of similar technologies to the technical solutions or technical features recorded in the foregoing embodiments, and these simple substitutions or modifications do not make the essence of the corresponding technical solutions deviate from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.
Claims
1. A catheter connector, characterized in that: An annular side plate is extended to one side around the circular bottom plate to form a joint body with an opening at one end, and the inner surface or outer surface of the side plate is provided with a circle of circumferentially spaced axial first wire drawing grooves formed by a metal wire drawing process; an annular limiting boss is extended outwardly from the outer surface of the side plate at the opening; the depth of the first wire drawing groove gradually decreases from the root of the limiting boss toward the circular bottom plate; the shape of the first wire drawing groove is a triangular pyramid.
2. A conduit connector according to claim 1, characterized in that: The ratio of the length of the first wire drawing groove to the length from the root of the limiting boss to the outer surface of the circular bottom plate is one fifth to four fifths.
3. A conduit connector according to claim 1 or 2, characterized in that: The circular bottom plate is provided with more than one circular hole.
4. A conduit connector according to claim 3, characterized in that: The circular bottom plate is provided with an inner flange or an outer flange around the periphery of each circular hole to form an annular connecting convex ring.
5. A conduit connector according to claim 4, characterized in that: A circle of axial second wire drawing grooves are arranged at intervals on the inner wall of the connecting convex ring in the circumferential direction.
6. A conduit connector according to claim 5, characterized in that: The ratio of the length of the second wire drawing groove to the height of the connecting protruding ring is one fifth to four fifths.
7. A conduit connector according to claim 5, characterized in that: The joint body and the connecting convex ring are an integrated structure made of stainless steel or copper.