Clamping and pressing type conversion copper connector

Abstract

A clamping and pressing type conversion copper connector comprises a copper connector body, the copper connector body is provided with an insertion end and a clamping and pressing type socket end, and the insertion end is communicated with the clamping and pressing type socket end through a through flow channel. A thickened step end face is arranged on the inner wall of the clamping and pressing type socket end, an annular groove is formed in the step end face, a magnet base is installed in the annular groove, a plurality of magnets are arranged on the magnet base, and the magnets are arranged in a Halbach array, so that a strong magnetic force side is formed on the inner side of the magnet base, and a weak magnetic force side is formed on the outer side of the magnet base. According to the utility model, the plurality of magnets interact with the first-end external pipe fitting, so that the first-end external pipe fitting is adsorbed on the stepped end face through magnetic attraction force, a certain limiting and anti-falling effect is provided in the clamping and pressing process, certain external force impact can be resisted, and the stability of the relative position of the first-end external pipe fitting and the copper joint body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of metal pipe connector products, in particular to a compression type conversion copper connector. Background Art

[0002] The pipeline system includes pipes, pipe connectors and other components, which are connected in sequence to form a device system for conveying fluids such as gas and liquid. When the pipeline system is working normally, the fluid is pressurized by pressurized equipment such as blowers, compressors, pumps and boilers, and then flows from the high-pressure part of the pipeline to the low-pressure part. It can also be conveyed by the fluid's own pressure or gravity. The pipeline system has a wide range of uses and can be used in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, etc., and the compression connection method can greatly improve the connection efficiency compared to the traditional threaded connection method.

[0003] The use of compression fittings is as follows: Preparation: 1. First, make sure that both ends of the pipes to be connected are cut flat and cleaned of any impurities and dirt to ensure a good seal. 2. Insert the pipe: Insert the end of the pipe to be connected into the joint of the compression fitting, making sure that the insertion depth meets the manufacturer's specifications. Usually, the joint will have a mark or sign to indicate the insertion depth. 3. Compression process: Use a special compression tool to apply pressure to the joint in the appropriate position. This will cause the clamping ring of the joint to be tightly fixed on the pipe, ensuring a tight seal and connection. 4. Check the connection: After completing the compression process, carefully check whether the connection is firm and correct. Make sure there is no looseness or offset, and check for any signs of leakage.

[0004] Prior art example 1 of a compression type pipe connector, referring to patent document CN202228815U, discloses a compression type pipe body equal diameter butt joint, including a joint body, with compression joints at both ends of the joint body; and an O-ring groove at the end of the compression joint. The utility model adopts a compression joint in the butt joint and provides an O-ring groove, so that the pipe butt joint installation is more convenient, and the sealing is good, and it is not easy to be damaged or leaked.

[0005] Prior art example 2 of a compression type pipe connector, referring to patent document CN205065100U, provides a compression type anti-leakage connector and a heating system, the compression type anti-leakage connector includes a copper joint, a sealing ring and a warning ring, an annular convex strip and an annular groove are formed on the outer peripheral wall of one end of the copper joint, and an annular groove is formed in the annular convex strip on the inner peripheral wall of one end of the copper joint, the sealing ring is located in the annular groove, the annular groove is located on the outside of the annular convex strip, the warning ring is clamped in the annular groove, and the other end of the copper joint is provided with an external thread structure or an internal thread structure. The compression type anti-leakage connector facilitates the connection of copper pipes, simplifies the copper pipe connection process, and improves the connection quality to improve the reliability of the heating system.

[0006] Combining technical examples 1 and 2, it can be inferred that in the existing products of this type, there is a lack of effective position limiting and restraining structure between the second-end external pipe fitting and the compression pipe fitting body before the clamping operation. Therefore, when external force is applied during the clamping process, the second-end external pipe fitting and the compression pipe fitting body are prone to relative displacement, resulting in a deviation in the clamping force position, causing the contact area between the sealing ring and the second-end external pipe fitting and the compression pipe fitting to be unstable, which in turn leads to a decrease in assembly accuracy, and there are defects such as poor sealing and easy leakage during use. Summary of the invention

[0007] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a compression type conversion copper joint

[0008] The utility model solves the technical problem by providing a compression-type conversion copper joint, comprising a copper joint body, wherein the copper joint body has an insertion end and a compression-type socket end, wherein the insertion end is connected to the compression-type socket end through a through-flow channel;

[0009] The inner wall of the clamping socket end has a thickened stepped end face, an annular groove is formed on the stepped end face, a magnet seat is installed in the annular groove, the magnet seat has a plurality of magnets, and the plurality of magnets are arranged in a Halbach array so that the inner side of the magnet seat forms a strong magnetic side, and the outer side forms a weak magnetic side.

[0010] The preferred configuration of the sealing groove is that a circle of sealing groove recessed outward is rolled on the inner wall of the compression-type socket end, and a built-in sealing ring is arranged in the sealing groove.

[0011] The preferred setting for the built-in sealing ring is that the built-in sealing ring is an EPDM built-in sealing ring, and the hardness of the EPDM built-in sealing ring is ≥55HD and the tensile strength is ≥10MPa.

[0012] Correspondingly, a circle of pressing flange is formed on the outer wall of the pressing type socket end corresponding to the sealing groove.

[0013] The preferred structure of the clamping structure is that the outer wall of the clamping socket end is also provided with a plurality of positioning concave points, and the positioning concave points are evenly distributed in a ring shape to form a ring-shaped positioning point array.

[0014] Furthermore, the annular positioning dot matrix has two circles and is symmetrically arranged on both sides of the clamping flange.

[0015] In a preferred embodiment of the utility model, the magnet seat is in the shape of a disk, and the magnets are arranged in an annular direction on the end surface of the magnet seat facing the insertion direction of the first end external pipe fitting.

[0016] In the present invention, the insertion end is preferably configured as follows: a first guide flange, a second guide flange, an equal-diameter flange, a first stop flange and a second stop flange are sequentially protruded from front to back on the outer wall of the insertion end;

[0017] The first guide flange and the second guide flange have wedge-shaped guide end surfaces that gradually expand outward from front to back, and the equal-diameter flange has a straight end surface.

[0018] The maximum radial dimension of the second stop flange is greater than the maximum radial dimension of the first stop flange, and the maximum radial dimension of the first stop flange is greater than the maximum radial dimension of the equal-diameter flange.

[0019] According to a further configuration, a circular arc groove is provided between the first stop flange and the second stop flange, and an external sealing ring is provided in the circular arc groove.

[0020] In the utility model, an indication area is etched on the outer wall of the compression-type socket end by laser, the indication area is located beside the compression flange, and the indication area is marked with the compression force value.

[0021] The beneficial effects of the utility model are:

[0022] 1. Multiple magnets interact with the first-end external pipe fitting so that the first-end external pipe fitting is adsorbed on the stepped end surface by magnetic attraction, providing a certain limit and anti-detachment effect during the clamping process, and being able to resist a certain external force impact, ensuring the relative position stability of the first-end external pipe fitting and the copper joint body. Thus, the second-end external pipe fitting and the clamping type pipe fitting body are prevented from relative displacement, making the contact area between the sealing ring and the second-end external pipe fitting and the clamping type pipe fitting more stable, improving the assembly accuracy, and thus making the seal more reliable, greatly reducing the probability of leakage during use.

[0023] Second, the magnets are arranged in a Halbach array. Due to the superposition of the parallel magnetic field and the radial magnetic field after the decomposition of the Halbach array magnet, the magnetic field strength on the other side is greatly improved, breaking the magnetic field distribution structure of conventional magnets, thus forming a strong magnetic side and a weak magnetic side. Therefore, magnets of the same model, material, and size can generate a larger magnetic field in a local area due to the change in arrangement, thereby generating a greater magnetic attraction to the first-end external pipe inserted therein, and playing a more obvious magnetic connection and limiting role. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the copper joint body in Example 1.

[0025] Figure 2 It is a half-section view of the copper joint body in the first embodiment.

[0026] Figure 3 This is a structural comparison diagram of the copper joint body before and after compression.

[0027] Figure 4 It is a comparative cross-sectional view of the pressing flange before and after pressing.

[0028] Figure 5 It is a half-section view after the second end external pipe fitting is inserted into the insertion end.

[0029] Figure 6 It is a half-section view after the first-end external pipe fitting is inserted into the compression-type socket end and compressed.

[0030] Figure 7 It is a structural schematic diagram and a partial enlarged schematic diagram of the copper joint body in Example 2.

[0031] Figure 8 Schematic diagram of the pressing tool.

[0032] Fig. 9 It is a schematic diagram of the distribution of magnets in the magnet seat in the first embodiment.

[0033] In the figure: 1, copper joint body; 101, through-flow channel; 102, indication area; 2, compression type socket end; 21, stepped end face; 211, annular groove; 22, sealing groove; 221, built-in sealing ring; 23, compression flange; 24, annular positioning dot matrix; 241, positioning concave point; 3, insertion end; 31, first guide flange; 32, second guide flange; 33, equal diameter flange; 34, first stop flange; 35, first Two stop flanges; 36, circular arc groove; 361, external sealing ring; 301, wedge-shaped guide end face; 302, straight end face; 4, magnet seat; 41, magnet; 401, strong magnetic side; 402, weak magnetic side; 42, end face facing the insertion direction of the first end external pipe fitting; 5, first end external pipe fitting; 6, clamping tool; 61, positioning protrusion; 7, second end external pipe fitting; 71, small diameter pipe wall; 72, large diameter pipe wall. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0035] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships 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.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Reference Figures 1 to 9 A compression-type conversion copper joint comprises a copper joint body 1, wherein the copper joint body 1 has an insertion end 3 and a compression-type socket end 2, wherein the insertion end 3 communicates with the compression-type socket end 2 through a through-flow channel 101;

[0038] The inner wall of the clamping socket end 2 has a thickened stepped end face 21, and an annular groove 211 is formed on the stepped end face 21. A magnet seat 4 is installed in the annular groove 211. The magnet seat 4 has a plurality of magnets 41 arranged in a Halbach array so that a strong magnetic side 401 is formed on the inner side of the magnet seat 4 and a weak magnetic side 402 is formed on the outer side.

[0039] The above content is the basic structural scheme of the utility model. What is different from the existing structural technology is that a stepped end face 21 is formed in the copper joint body 1, and an annular groove 211 is formed on the stepped end face 21, and the magnet 41 is installed in the annular groove 211 through the magnet seat 4.

[0040] The use of the utility model is as follows: insert the first-end external pipe fitting 5 to be connected into the through-flow channel 101 through the compression-type socket end 2. When inserted into place, the first-end external pipe fitting 5 abuts against the stepped end face 21. At the same time, multiple magnets 41 interact with the first-end external pipe fitting 5, so that the first-end external pipe fitting 5 is adsorbed on the stepped end face 21 through magnetic attraction, providing a certain limit and anti-slip effect during the compression process, and being able to resist certain external force impacts, ensuring the relative position stability of the first-end external pipe fitting 5 and the copper joint body. Thus, the second-end external pipe fitting 7 is prevented from relative displacement with the compression-type pipe fitting body, making the contact area between the sealing ring and the second-end external pipe fitting 7 and the compression-type pipe fitting more stable, improving the assembly accuracy, and thus making the seal more reliable, greatly reducing the probability of leakage during use.

[0041] It is worth mentioning that the magnet 41 in the present application adopts the Halbach array arrangement. Due to the mutual superposition of the parallel magnetic field and the radial magnetic field after the decomposition of the Halbach array magnet 41, the magnetic field strength on the other side is greatly improved, breaking the magnetic field line distribution structure of the conventional magnet, thereby forming a strong magnetic side 401 and a weak magnetic side 402. Therefore, the magnet 41 of the same model, material, and size can generate a larger magnetic field in the local area due to the change in the arrangement, thereby generating a greater magnetic attraction to the first end external pipe 5 inserted therein, and playing a more obvious magnetic connection and limiting role.

[0042] During disassembly, the user holds the first-end external pipe component 5 by hand or with a tool, applies external force to overcome the magnetic attraction, and then separates the first-end external pipe component 5 from the magnet 41 , and smoothly removes the first-end external pipe component 5 .

[0043] It should be noted that a circle of outwardly concave sealing groove 22 is rolled on the inner wall of the compression type socket end 2. During processing, the copper joint body 1 is placed on the machine tool so that it rotates, and then the processing rolling tool is inserted into the through flow channel 101, and moves outward after reaching a specified depth, so that the processing rolling tool contacts the straight inner wall of the compression type socket end 2. Since the copper joint body 1 rotates relative to the processing rolling tool, the copper processing rolling tool can squeeze the inner wall of the compression type socket end 2, so that the original straight inner wall is concave outward to form a circle of sealing groove 22.

[0044] During the process of forming the sealing groove 22 , a circle of pressing flange 23 is naturally formed at the outer wall of the pressing type socket end 2 corresponding to the sealing groove 22 .

[0045] Reference Figure 3-4 When in use, it is necessary to provide a built-in sealing ring 221 in the sealing groove 22, so that when the first-end external pipe fitting 5 is connected, the pressing tool 6 is used to perform a pressing operation on the pressing flange 23, so that the pressing flange 23 is deformed and contracted, and then the built-in sealing ring 221 can be respectively pressed against the outer wall of the first-end external pipe fitting 5 and the inner wall of the pressing socket end 2, so that a sealing fit is formed between the first-end external pipe fitting 5 and the inner wall of the pressing socket end 2.

[0046] Preferably, the built-in sealing ring 221 is an EPDM built-in sealing ring 221, and the hardness of the EPDM built-in sealing ring 221 is ≥55HD and the tensile strength is ≥10MPa to meet the requirements in actual use environment.

[0047] It is worth mentioning that this embodiment is a preferred solution of the magnet seat 4 and the magnet 41 in the utility model, specifically: Fig. 9 The magnet seat 4 is disc-shaped, and the magnets 41 are arranged circumferentially on the end surface 42 of the magnet seat 4 in the insertion direction of the first end external pipe fitting 5, so that each magnet 41 can stably maintain the Halbach array arrangement.

[0048] Embodiment 2

[0049] The pressing flange 23 is in a rounded arc shape, so the pressing tool 6 may slip during use, resulting in unstable pressing.

[0050] In order to solve the above defects, based on the structure of the first embodiment, this embodiment provides a more preferred structural solution, which is as follows:

[0051] Reference Figure 7The outer wall of the compression type socket end 2 is also provided with a plurality of positioning concave points 241, and the positioning concave points 241 are evenly distributed in a ring shape to form a ring-shaped positioning dot matrix 24. The ring-shaped positioning dot matrix 24 has two circles and is symmetrically arranged on both sides of the compression flange 23.

[0052] When the pressing tool 6 is used, it can contact with the annular positioning dot matrix 24, thereby increasing the contact area and friction between the two, so that the pressing tool 6 can have a more stable state. Figure 8 The pressing tool 6 may be formed with corresponding positioning protrusions 61, which are inserted into the respective positioning recesses 241 of the annular positioning dot matrix 24, thereby playing a positioning role, so that the pressing tool 6 can be mounted on the pressing flange 23 in a more stable state, so that the pressing action can be completed smoothly.

[0053] Embodiment 3

[0054] In this embodiment, the preferred structural scheme of the insertion end 3 is described, specifically: Figure 2 , Figure 5 The outer wall of the insertion end 3 is provided with a first guide flange 31, a second guide flange 32, an equal diameter flange 33, a first stop flange 34 and a second stop flange 35 in sequence from front to back; wherein the structure of each flange is defined as follows:

[0055] 1. The first guide flange 31 and the second guide flange 32 have wedge-shaped guide end faces 301 that gradually expand outward from front to back, so as to facilitate the access of the second-end external pipe fitting 7, and play a guiding and insertion-assisting role in the front end area; the equal-diameter flange 33 has a straight end face 302, which maintains a stable and consistent height in the rear end area, preventing the second-end external pipe fitting 7 from unnecessary deformation in the rear section of insertion, thereby providing assembly accuracy.

[0056] Second, the maximum radial dimension of the second stop flange 35 is greater than the maximum radial dimension of the first stop flange 34, and the maximum radial dimension of the first stop flange 34 is greater than the maximum radial dimension of the equal-diameter flange 33. By setting the maximum radial dimension, it is adapted to the second end external pipe fitting 7 of the double-layer inner wall structure, so that the small-diameter pipe wall 71 on the second end external pipe fitting 7 can abut against the first stop flange 34 and form a limited fit after passing through the equal-diameter flange 33, and at the same time, the large-diameter pipe wall 72 on the second end external pipe fitting 7 can abut against the second stop flange 35 and form a limited fit after passing through the first stop flange 34.

[0057] 3. There is an arc groove 36 between the first stop flange 34 and the second stop flange 35, and an external sealing ring 361 is provided in the arc groove 36. Therefore, after the second-end external pipe fitting 7 is connected, the external sealing ring 361 abuts against the first stop flange 34, the second stop flange 35, the large-diameter pipe wall 72 of the second-end external pipe fitting 7 and the outer wall of the copper joint body 1, respectively, to form an all-round seal, so that the second-end external pipe fitting 7 and the insertion end 3 are closely and reliably matched, reducing the probability of leakage.

[0058] Embodiment 4

[0059] Reference Figure 1 In this embodiment, an indication area 102 is etched on the outer wall of the compression-type socket end 2 by laser, and the indication area 102 is located beside the compression flange 23. The setting of the indication area 102 can provide a prompt function to the installer or the user.

[0060] In particular, if the force during the clamping process is too large or too small, it will lead to improper assembly, thereby posing a greater risk of leakage in later use. Therefore, the indicator area 102 is marked with a clamping force value, so that the clamping operation can be performed according to the marked clamping force value to achieve a good connection between the first end external pipe fitting 5 and the copper joint body 1.

[0061] It is worth noting that other technical solutions of the present invention belong to the prior art and will not be described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A compression-type conversion copper joint, comprising a copper joint body (1), wherein the copper joint body (1) has an insertion end (3) and a compression-type socket end (2), wherein the insertion end (3) communicates with the compression-type socket end (2) through a through-flow channel (101); Features: The inner wall of the clamping socket end (2) has a thickened stepped end face (21), the stepped end face (21) is provided with an annular groove (211), a magnet seat (4) is installed in the annular groove (211), the magnet seat (4) has a plurality of magnets (41), and the plurality of magnets (41) are arranged in a Halbach array, so that the inner side of the magnet seat (4) forms a strong magnetic side (401), and the outer side forms a weak magnetic side (402).

2. The compression-type conversion copper joint according to claim 1 is characterized in that: The inner wall of the compression-type socket end (2) is rolled to form a sealing groove (22) that is recessed outwards, and a built-in sealing ring (221) is arranged in the sealing groove (22).

3. The compression-type conversion copper joint according to claim 2 is characterized in that: The built-in sealing ring (221) is an EPDM built-in sealing ring (221), and the hardness of the EPDM built-in sealing ring (221) is ≥55HD, and the tensile strength is ≥10MPa.

4. The compression-type conversion copper joint according to claim 2 is characterized in that: A circle of pressing flange (23) is formed at the outer wall of the pressing type socket end (2) corresponding to the sealing groove (22).

5. The compression-type conversion copper joint according to claim 4 is characterized in that: The outer wall of the compression-type socket end (2) is also provided with a plurality of positioning concave points (241), and the positioning concave points (241) are evenly distributed in a ring shape to form a ring-shaped positioning point matrix (24); The annular positioning dot matrix (24) has two circles and is symmetrically arranged on both sides of the pressing flange (23).

6. The compression-type conversion copper joint according to claim 1, characterized in that: The magnet seat (4) is in the shape of a disk, and the magnets (41) are arranged in a circumferential direction on the end surface (42) of the magnet seat (4) facing the insertion direction of the first end external pipe fitting (5).

7. The compression-type conversion copper joint according to claim 1, characterized in that: A first guide flange (31), a second guide flange (32), an equal-diameter flange (33), a first stop flange (34) and a second stop flange (35) are sequentially protruded from front to back on the outer wall of the insertion end (3); The first guide flange (31) and the second guide flange (32) have wedge-shaped guide end surfaces (301) that gradually expand outward from front to back, and the equal-diameter flange (33) has a straight end surface (302).

8. The compression-type conversion copper joint according to claim 7, characterized in that: The maximum radial dimension of the second stop flange (35) is greater than the maximum radial dimension of the first stop flange (34), and the maximum radial dimension of the first stop flange (34) is greater than the maximum radial dimension of the equal-diameter flange (33).

9. The compression-type conversion copper joint according to claim 7, characterized in that: An arc groove (36) is provided between the first stop flange (34) and the second stop flange (35), and an external sealing ring (361) is provided in the arc groove (36).

10. The compression-type conversion copper joint according to claim 4, characterized in that: An indication area (102) is etched on the outer wall of the compression-type socket end (2) by laser, the indication area (102) is located beside the compression flange (23), and the indication area (102) is marked with a compression force value.

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