Corrosion-resistant and high-temperature-resistant bead inlet connector
By installing a limit ring on the nut body of the beaded joint and installing a ring body, guide rod, connecting arm and clamp strip outside the joint body, the problem of loose nuts in high-temperature environments is solved, and the firm installation and simple disassembly and assembly process of the inner beads are achieved.
Patent Information
- Application Number
- CN202420661461.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing beaded joints can easily cause the nut to loosen in high temperature environments, affecting the fixing effect of the inner beads and causing leakage.
A corrosion-resistant and high-temperature beading joint is designed. By installing a limit ring on the nut body and installing a ring body, guide rod, connecting arm and clamp strip outside the joint body, the blocking effect of the clamp strip and the limit ring is used to limit the nut to avoid loosening.
It effectively avoids the loosening and falling off of the nut, ensures the firm installation of the inner beads, improves the stability of the overall connection, and simplifies the disassembly and assembly process of the nut.
Smart Images
Figure CN222963547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bead-inserting joints, in particular to a bead-inserting joint with corrosion resistance and high temperature resistance. Background Technique
[0002] A bead-inserting joint is a pipe fitting used to connect pipes, usually composed of a connector, an inner bead, a nut, etc. The connector has a certain aperture and shape. The inner bead cooperates with the connector, and the nut is in threaded cooperation with the connector. The inner bead is inserted into the connector and fixed by the nut to achieve the connection and sealing of the pipes. The connection method using a bead-inserting joint can ensure the stability and sealing of the pipes, avoid leakage or loosening, and thus the bead-inserting joint is widely used in various fields.
[0003] During long-term use, especially when transporting liquids with higher temperatures, the connector and the nut are prone to absorb heat, and the temperature changes frequently. According to the principle of thermal expansion and contraction, it affects the fastening force between the bolt and the nut, easily causes the nut to loosen, and then reduces the fixing effect on the inner bead, resulting in the loosening of the inner bead and leakage. The existing bead-inserting joints only install the nut on the connector by threading, lacking a limiting effect on the nut. Content of the Utility Model
[0004] The purpose of the utility model is to provide a bead-inserting joint with corrosion resistance and high temperature resistance that has a clamping and limiting effect on the nut, effectively solving the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions.
[0006] A bead-inserting joint with corrosion resistance and high temperature resistance, including a joint body, an inner bead, a nut body, and a connecting pipe. The inner bead is inserted into the joint part of the joint body, the nut body is threadedly installed on the joint part, one end of the inner bead extends to the outside through the lead-out hole of the nut body, the connecting pipe is sleeved on the outer end part of the inner bead, an installation ring body is sleeved outside the joint body, an installation hole is provided on the outer peripheral surface of the installation ring body, a guide rod extending to the outside of the installation ring body is slidably installed in the installation hole, a connecting arm is fixed on the outer end part of the guide rod, a clamping strip is fixed on the end part of the connecting arm, a limiting ring is fixedly sleeved outside the nut body, and the limiting ring and the clamping strip are in blocking cooperation to limit the nut body. Springs are installed in the installation holes, one end of each spring is fixed to the end face of the guide rod located in the installation hole, and the other end is fixed to the inner end wall of the installation hole.
[0007] It can be seen that by installing a limit ring on the nut body, successively installing a mounting ring body, a guide rod, a connecting arm and a clamping strip outside the joint body, after the nut body is screwed and installed, by using the clamping strip to abut against the surface of the limit ring away from the joint body, a limit and blocking effect is exerted on the nut body, so as to avoid the loosening or even falling off of the nut body, and ensure the firmness of the inner bead installation. The guide rod is slidably installed in the installation hole, and a spring is installed in the installation hole, so that the guide rod has the ability of telescopic adjustment. Furthermore, by pulling the guide rod out of the installation hole, the blocking of the clamping strip and the limit ring can be cancelled, facilitating the clamping strip to straddle the limit ring, and thus facilitating the disassembly and assembly of the nut body. Moreover, the elastic pulling effect of the spring helps to maintain the state of the clamping strip blocking the limit ring. At the same time, the guide rod, the connecting arm and the clamping strip are arranged on the mounting ring body, and the mounting ring body is sleeved on the joint body, avoiding directly opening holes and processing on the joint body, which affects the overall structural strength of the joint body, ensuring that the joint body will not deform easily, and thus improving the firmness of the overall connection.
[0008] Furthermore, a retaining ring is fixedly sleeved outside the inner bead. One side surface of the retaining ring abuts and cooperates with the end surface of the joint part, and the other side surface abuts and cooperates with the inner end wall of the nut body.
[0009] By the abutting and cooperating of the retaining ring with the end surface of the joint part, the two can be closely attached, achieving a sealing effect, ensuring the sealing performance of the connection between the inner bead and the joint body. In addition, the retaining ring provides a limiting effect on the inner bead, avoiding the inner bead completely entering the joint part and resulting in abnormal installation. Secondly, the retaining ring abuts and cooperates with the inner end wall of the nut body, providing a limiting and blocking effect on the inner bead, realizing the fastening effect on the inner bead. The connection and sealing of the inner bead with the joint body and the limiting of the inner bead share the inner bead component, achieving multiple benefits with one action.
[0010] Furthermore, an annular concave cavity is provided on the end surface of the joint part, and an annular convex part matching the annular concave cavity is provided on the surface of the retaining ring abutting and cooperating with the end surface of the joint part. When the inner bead is inserted into the joint part, the annular convex part is matched and snapped into the annular concave cavity and closely adheres to the inner wall of the annular concave cavity.
[0011] When the retaining ring abuts against the joint part, the annular convex part can be matched and snapped into the annular concave cavity, ensuring the firmness during connection. At the same time, by using the cooperation of the annular convex part and the annular concave cavity, the fitting area is increased, further improving the sealing effect.
[0012] Furthermore, the mounting ring body is composed of two semi-circular bodies. The two ends of the two semi-circular bodies are correspondingly fastened by fastening screws to form the mounting ring body. A clamping ring is fixedly sleeved outside the joint body, and annular clamping grooves matching the clamping ring are provided on the inner edge walls of the two semi-circular bodies.
[0013] After the two semi-circular bodies are joined together and fastened by fastening screws to form an integral mounting ring body, the mounting ring body has a detachable effect, and the disassembly and assembly are convenient and fast. At the same time, a clamping ring is provided outside the joint body and an annular clamping groove for cooperating with the clamping ring is provided on the inner edge wall of the semi-circular body. When the mounting ring body is installed on the joint body, the annular clamping groove is snapped into the clamping ring to provide a limiting effect on the mounting ring body, avoiding the random movement of the mounting ring body and affecting the limiting effect on the nut body.
[0014] Further, the end face of the limiting ring facing the joint body has a second slope, and the side of the clamping strip facing the connecting pipe has a first slope, and the first slope and the second slope are in inclined surface extrusion fit.
[0015] During the tightening process of the nut body, when the limiting ring contacts the clamping strip, inclined surface extrusion occurs at the first slope and the second slope, which can push the clamping strip outwards, facilitating the clamping strip to cross the limiting ring for the blocking effect, without the need to manually pull the guide rod outwards.
[0016] Further, a plurality of annular ridges are provided on the outer surface of the inner bead near the end connected to the connecting pipe.
[0017] By providing annular ridges at the end of the inner bead, the connecting pipe is not easily detached after being sleeved, improving the connection stability and sealing performance.
[0018] Further, a plurality of convex strips are provided on the outer surface of the nut body, and the plurality of convex strips are distributed in an annular array on the nut body.
[0019] By arranging the convex strips in an array on the outer part of the nut body, when the nut body is manually screwed, an anti-slip effect is achieved, avoiding slipping off the hand.
[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows.
[0021] 1. By installing a limiting ring on the nut body of the present utility model, and successively installing a mounting ring body, a guide rod, a connecting arm and a clamping strip outside the joint body. After the nut body is screwed and assembled, by using the surface of the clamping strip in contact with the surface of the limiting ring away from the joint body, a limiting and blocking effect is achieved on the nut body, thereby avoiding the loosening or even falling off of the nut body and ensuring the firmness of the inner bead installation.
[0022] 2. The guide rod of the present utility model is slidably installed in the installation hole, and a spring is installed in the installation hole, enabling the guide rod to have the ability of telescopic adjustment. Then, by pulling the guide rod out of the installation hole, the blocking of the clamping strip and the limiting ring can be cancelled, facilitating the clamping strip to cross the limiting ring, and thus facilitating the disassembly and assembly of the nut body. Moreover, the elastic pulling effect of the spring helps to maintain the blocking state of the clamping strip and the limiting ring.
[0023] 3. In the present utility model, the guide rod, the connecting arm and the clamping strip are arranged on the mounting ring body, and the mounting ring body is sleeved on the joint body, avoiding directly machining holes on the joint body and affecting the overall structural strength of the joint body, ensuring that the joint body will not easily deform, and thus improving the overall connection firmness. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present utility model;
[0025] Figure 2 It is a schematic cross-sectional structure diagram of the overall structure of the present utility model;
[0026] Figure 3 It is a schematic plan view of a partial structure of the present utility model;
[0027] Figure 4 is Figure 2 a schematic enlarged view of the structure at A in
[0028] Figure 5 is Figure 2 a schematic enlarged view of the structure at B in
[0029] Figure 6 is Figure 2 a schematic enlarged view of the structure at C in
[0030] In the figure: 01, snap ring; 02, annular card slot; 03, first slope; 04, second slope; 1, joint body; 11, joint part; 111, annular cavity; 2, inner bead; 201, annular convex rib; 21, retaining ring; 211, annular convex part; 3, nut body; 301, lead-out hole; 302, rib; 31, limiting ring; 4, connecting pipe; 5, mounting ring body; 501, mounting hole; 51, semi-cylindrical body; 52, fastening screw; 6, guide rod; 601, spring; 61, connecting arm; 62, clamping strip. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0032] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only with reference to the direction of the attached drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present utility model.
[0033] In the embodiments of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.
[0034] Please refer to Figures 1-6 , a beaded joint with corrosion resistance and high temperature provided by the present utility model includes a joint body 1, an inner bead 2, a nut body 3, and a connecting pipe 4. The inner bead 2 is inserted into the joint part 11 of the joint body 1. The nut body 3 is threadedly installed on the joint part 11. One end of the inner bead 2 extends to the outside through the lead-out hole 301 of the nut body 3. The connecting pipe 4 is sleeved on the outer end part of the inner bead 2. An installation ring body 5 is sleeved outside the joint body 1. Installation holes 501 are provided on the outer peripheral surface of the installation ring body 5. Guide rods 6 extending to the outside of the installation ring body 5 are slidably installed in the installation holes 501. A connecting arm 61 is fixed to the outer end part of the guide rod 6. A clamping strip 62 is fixed to the end part of the connecting arm 61. A limiting ring 31 is fixedly sleeved outside the nut body 3. The limiting ring 31 and the clamping strip 62 are in blocking cooperation to limit the nut body 3. Springs 601 are installed in the installation holes 501. One end of the spring 601 is fixed to the end face of the guide rod 6 located in the installation hole 501, and the other end is fixed to the inner end wall of the installation hole 501.
[0035] The joint body 1, the inner bead 2, and the nut body 3 in the present utility model are all made of perfluoroethylene copolymer tetrafluoroethylene material (PFA). The PFA material can be used for a long time at a temperature up to 260 °C without melting or deformation. The PFA material has strong chemical corrosion resistance and can resist the erosion of a wide range of acids, alkalis, solvents, and corrosive gases, making the beaded joint have good corrosion resistance and high temperature resistance.
[0036] When the utility model is in use, first, the inner bead 2 is installed in the joint head 11, and then the nut body 3 is screwed onto the joint head 11 in a threaded manner. The inner bead 2 is fastened in the joint head 11 by the nut body 3. At the same time, one end of the inner bead 2 extends to the outside through the lead-out hole 301. Then, the end of the connecting pipe 4 connected to the inner bead 2 is heated, and then the pipe is expanded by an expander. Subsequently, the end of the connecting pipe 4 is sleeved on the outer end of the inner bead 2. After cooling and forming, the pipeline connection can be completed. After the nut body 3 is screwed on, by using the clamping strip 62 to abut against the surface of the limiting ring 31 away from the joint body 1, a limiting and blocking effect on the nut body 3 is achieved, thereby avoiding the loosening or even falling off of the nut body 3 and ensuring the firmness of the installation of the inner bead 2. In addition, the guide rod 6 is slidably installed in the installation hole 501, and a spring 601 is installed in the installation hole 501, enabling the guide rod 6 to have the ability of telescopic adjustment. Furthermore, by pulling the guide rod 6 out of the installation hole 501, the blocking of the clamping strip 62 and the limiting ring 31 can be cancelled, facilitating the clamping strip 62 to straddle the limiting ring 31, and thus facilitating the disassembly and assembly of the nut body 3. Moreover, the elastic pulling effect of the spring 601 helps to maintain the blocking state of the clamping strip 62 and the limiting ring 31.
[0037] Specifically, a retaining ring 21 is fixedly sleeved outside the inner bead 2. One side surface of the retaining ring 21 abuts and cooperates with the end surface of the joint head 11, and the other side surface abuts and cooperates with the inner end wall of the nut body 3. By the abutting and cooperation of the retaining ring 21 and the end surface of the joint head 11, the two can be closely attached, achieving a sealing effect and ensuring the sealing performance of the connection between the inner bead 2 and the joint body 1. In addition, the retaining ring 21 provides a limiting effect on the inner bead 2, preventing the inner bead 2 from completely entering the joint head 11 and resulting in abnormal installation. Secondly, the retaining ring 21 abuts and cooperates with the inner end wall of the nut body 3, providing a limiting and blocking effect on the inner bead 2 and realizing the fastening effect on the inner bead 2. The connection and sealing between the inner bead 2 and the joint body 1 and the limiting of the inner bead 2 share the inner bead 2 component, achieving multiple benefits with one action.
[0038] Specifically, an annular concave cavity 111 is provided on the end surface of the joint head 11. The surface of the retaining ring 21 that abuts and cooperates with the end of the joint head 11 is provided with an annular convex portion 211 that matches the annular concave cavity 111. When the inner bead 2 is installed in the joint head 11, the annular convex portion 211 is matched and snapped into the annular concave cavity 111 and closely adheres to the inner wall of the annular concave cavity 111. When the retaining ring 21 abuts against the joint head 11, the annular convex portion 211 can be matched and snapped into the annular concave cavity 111, ensuring the firmness during connection. At the same time, by using the cooperation of the annular convex portion 211 and the annular concave cavity 111, the fitting area is increased, further improving the sealing effect.
[0039] Specifically, the mounting ring body 5 is composed of two semi-circular arc bodies 51. The two ends of the two semi-circular arc bodies 51 are correspondingly fastened by fastening screws 52 to form the mounting ring body 5. A snap ring 01 is fixedly sleeved outside the joint body 1. Annular clamping grooves 02 matching the snap ring 01 are provided on the inner edge walls of the two semi-circular arc bodies 51. After the two semi-circular arc bodies 51 are aligned, they are fastened by fastening screws 52 to form the whole mounting ring body 5, so that the mounting ring body 5 has the effect of being detachable, and the disassembly and assembly are convenient and fast. At the same time, the snap ring 01 is arranged outside the joint body 1 and the annular clamping groove 02 matching the snap ring 01 is arranged on the inner edge wall of the semi-circular arc body 51. When the mounting ring body 5 is installed on the joint body 1, the annular clamping groove 02 is clamped into the snap ring 01 to provide a limiting effect on the mounting ring body 5, avoiding the random movement of the mounting ring body 5 from affecting the limiting effect on the nut body 3.
[0040] Specifically, the end face of the limiting ring 31 facing the joint body 1 has a second slope 04, and the side of the clamping strip 62 facing the connecting pipe 4 has a first slope 03. The first slope 03 and the second slope 04 are in inclined surface extrusion fit. During the tightening process of the nut body 3, when the limiting ring 31 contacts the clamping strip 62, inclined surface extrusion occurs at the first slope 03 and the second slope 04, and the clamping strip 62 can be pushed outwards, facilitating the clamping strip 62 to cross the limiting ring 31 for the blocking effect, without the need to manually pull the guide rod 6 outwards.
[0041] Specifically, a plurality of annular ridges 201 are provided on the outer surface of the inner bead 2 near the end connected to the connecting pipe 4. By arranging the annular ridges 201 at the end of the inner bead 2, the connecting pipe 4 is not easily detached after being sleeved, improving the connection stability and sealing performance.
[0042] Specifically, a plurality of convex strips 302 are provided on the outer surface of the nut body 3, and the plurality of convex strips 302 are arranged in an annular array on the nut body 3. By arranging the convex strips 302 in an array outside the nut body 3, when the nut body 3 is manually screwed, an anti-slip effect is achieved, avoiding slipping and dropping the hand.
[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A corrosion-resistant and high-temperature beaded joint, characterized in that: It comprises a joint body (1), an inner ball (2), a nut body (3) and a connecting pipe (4); The inner ball (2) is inserted into the joint portion (11) of the joint body (1), the nut body (3) is threadedly mounted on the joint portion (11), one end of the inner ball (2) passes through the lead-out hole (301) of the nut body (3) and extends to the outside, and the connecting pipe (4) is sleeved on the outer end of the inner ball (2); The joint body (1) is sleeved with a mounting ring body (5) on its exterior, the mounting ring body (5) being provided with a mounting hole (501) on its outer peripheral surface, a guide rod (6) extending to the outside of the mounting ring body (5) being slidably mounted in the mounting hole (501), a connecting arm (61) being fixed to the outer end of the guide rod (6), and a clamping strip (62) being fixed to the end of the connecting arm (61); The nut body (3) is externally fixedly sleeved with a limiting ring (31), and the limiting ring (31) cooperates with the clamping strip (62) to limit the position of the nut body (3); A spring (601) is installed in each of the mounting holes (501), one end of the spring (601) is fixed to the end surface of the guide rod (6) located in the mounting hole (501), and the other end is fixed to the inner end wall of the mounting hole (501).
2. A corrosion-resistant and high-temperature beaded joint according to claim 1, characterized in that: The inner bead (2) is fixedly sleeved with a retaining ring (21) on the outside, and one side surface of the retaining ring (21) is in contact with the end surface of the joint part (11), and the other side surface is in contact with the inner end wall of the nut body (3).
3. A corrosion-resistant and high-temperature beaded joint according to claim 2, characterized in that: An annular cavity (111) is provided on the end surface of the joint portion (11), and an annular convex portion (211) matching the annular cavity (111) is provided on the surface of the retaining ring (21) that contacts and cooperates with the end of the joint portion (11); When the inner bead (2) is installed in the joint portion (11), the annular protrusion (211) is matched and inserted into the annular cavity (111) and fits tightly against the inner wall of the annular cavity (111).
4. The corrosion-resistant and high-temperature beaded joint according to claim 1, characterized in that: The mounting ring body (5) is composed of two half arc bodies (51), and the two ends of the two half arc bodies (51) are correspondingly fastened by fastening screws (52) to form the mounting ring body (5); A clamping ring (01) is fixedly sleeved on the outside of the joint body (1), and the inner edge walls of the two semi-arc bodies (51) are both provided with an annular clamping groove (02) matching the clamping ring (01).
5. The corrosion-resistant and high-temperature beaded joint according to claim 1, characterized in that: The end surface of the limiting ring (31) facing the joint body (1) has a second slope (04), and the end surface of the clamping strip (62) facing the connecting pipe (4) has a first slope (03), and the first slope (03) and the second slope (04) are pressed and matched with each other.
6. The corrosion-resistant and high-temperature beaded joint according to claim 1, characterized in that: A plurality of annular ridges (201) are provided on the outer surface of the inner bead (2) near the end connected to the connecting pipe (4).
7. The corrosion-resistant and high-temperature beaded joint according to claim 1, characterized in that: The outer surface of the nut body (3) is provided with a plurality of convex strips (302), and the plurality of convex strips (302) are distributed on the nut body (3) in a ring-shaped array.