Corrugated pipe connecting device

Abstract

The utility model discloses a corrugated pipe connecting device which comprises a supporting ring, a fixing ring, a plurality of connecting columns and a connecting sleeve. The supporting ring is arranged in the corrugated pipe and abuts against the inner wall of the corrugated pipe, and the supporting ring is used for applying centrifugal force to the corrugated pipe; the fixing ring is arranged outside the corrugated pipe and used for applying centripetal force to the corrugated pipe; the connecting columns are parallel to one another and surround one end of the fixing ring, and barbs are arranged on the outer side walls of the ends, away from the fixing ring, of the connecting columns. A plurality of inserting grooves are formed in the inner side wall of the connecting sleeve in the axis direction of the connecting sleeve, concave parts matched with the barbs are formed in the inserting grooves, and the connecting column is connected with the connecting sleeve in an inserted mode. The supporting rings are arranged on the inner wall of the corrugated pipe, so that the supporting rings abut against the inner wall of the corrugated pipe, and centrifugal force is applied to the corrugated pipe; a fixing ring is arranged outside the corrugated pipe, and centripetal force is applied to the corrugated pipe; the supporting ring and the fixing ring are matched with each other, the corrugated pipe can be firmly fixed, and the corrugated pipe and the connecting device are not prone to being separated.

Description

Technical Field

[0001] The present application relates to the field of connection devices, and in particular to a bellows connection device. Background Art

[0002] The bellows is a common pipe material, which has been widely used in various fields. Sometimes, due to the insufficient length of the bellows, it is necessary to splice it with other pipe materials. The existing bellows connecting device is not strong enough to connect the bellows, which can easily cause the bellows to separate from the connecting device, affecting normal use. Summary of the invention

[0003] The main purpose of the present application is to provide a bellows connecting device, which aims to solve the technical problem that the existing bellows connecting device is not firmly connected to the bellows, which easily causes the bellows to separate from the connecting device, affecting normal use.

[0004] To achieve the above-mentioned purpose, the present application provides a bellows connecting device, including a support ring, a fixing ring, a plurality of connecting columns, and a connecting sleeve; the support ring is arranged inside the bellows and abuts against the inner wall of the bellows, and the support ring is used to apply centrifugal force to the bellows; the fixing ring is arranged outside the bellows, and the fixing ring is used to apply centripetal force to the bellows; a plurality of connecting columns are parallel to each other and arranged around one end of the fixing ring, and a barb is provided on the outer side wall of the connecting column away from the fixing ring; the inner side wall of the connecting sleeve is provided with a plurality of slots adapted to the connecting columns along its own axial direction, and a recessed portion adapted to the barb is provided in the slot, and the connecting column is plug-connected to the connecting sleeve.

[0005] Optionally, the support ring is made of a rigid material.

[0006] Optionally, a side surface of the support ring contacting the inner wall of the bellows and / or a side surface of the fixing ring contacting the outer wall of the bellows is a rough surface.

[0007] Optionally, the support ring is cylindrical, the axial direction of the support ring is the same as the length direction of the bellows, and the inner diameter of the support ring gradually increases from both ends to the middle.

[0008] Optionally, the fixing ring includes a first arc-shaped structure and a second arc-shaped structure; one end of the first arc-shaped structure is rotatably connected to one end of the second arc-shaped structure via a hinge, and the other end of the first arc-shaped structure and the other end of the second arc-shaped structure are both provided with a connecting part, a threaded hole is provided on the connecting part, and the two connecting parts are connected by bolts.

[0009] Optionally, the fixing ring includes a first arc-shaped structure and a second arc-shaped structure; both ends of the first arc-shaped structure and the second arc-shaped structure are provided with connecting parts, threaded holes are opened on the connecting parts, and the two connecting parts opposite to each other are connected by bolts.

[0010] Optionally, a reinforcement ring is provided on the outer side wall of the connecting sleeve.

[0011] Optionally, a concave portion is provided on a surface of one side of the fixing ring contacting the bellows, and the concave portion is adapted to the curvature of the bellows.

[0012] Optionally, the bellows connecting device is used to connect the bellows and the extension pipe; the extension pipe is threadedly connected to the connecting sleeve.

[0013] Optionally, the inner wall of the connecting sleeve is provided with an internal thread, and the connecting end of the extension tube and the connecting sleeve is provided with an external thread; or, the outer wall of the connecting sleeve is provided with an external thread, and the connecting end of the extension tube and the connecting sleeve is provided with an internal thread.

[0014] The present application provides a support ring on the inner wall of the bellows so that the support ring abuts against the inner wall of the bellows to apply centrifugal force to the bellows; and provides a fixing ring on the outside of the bellows to apply centripetal force to the bellows; the support ring and the fixing ring cooperate with each other to firmly fix the bellows, and the bellows is not easily separated from the connecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of a part of the structure of the present application in the length direction of the bellows;

[0016] Figure 2 This is a cross-sectional view of the overall structure of the present application in the length direction of the bellows;

[0017] Figure 3 is a cross-sectional view of the connecting sleeve in its radial direction;

[0018] Figure 4 A cross-sectional view of a fixing ring in a radial direction in an optional embodiment of the present application;

[0019] Figure 5 This is a cross-sectional view of a fixing ring in a radial direction in another optional embodiment of the present application;

[0020] Figure 6 This is a cross-sectional view of the connecting sleeve and the extension tube in the radial direction in an optional embodiment of the present application;

[0021] Figure 7 This is a cross-sectional view of the connecting sleeve and the extension tube in the radial direction in another optional embodiment of the present application;

[0022] Among them, 1. support ring; 2. fixing ring; 3. connecting column; 4. connecting sleeve; 5. barb; 6. slot; 7. hinge; 8. connecting part; 9. reinforcement ring; 10. extension tube; 11. external thread; 12. internal thread; 13. corrugated tube.

[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The present application provides a bellows connection device, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a support ring 1, a fixing ring 2, a plurality of connecting columns 3, and a connecting sleeve 4; the support ring 1 is arranged inside the bellows 13 and abuts against the inner wall of the bellows 13, and the support ring 1 is used to apply centrifugal force to the bellows 13; the fixing ring 2 is arranged outside the bellows 13, and the fixing ring 2 is used to apply centripetal force to the bellows 13; a plurality of connecting columns 3 are parallel to each other and arranged around one end of the fixing ring 2, and a barb 5 is arranged on the outer side wall of the end of the connecting column 3 away from the fixing ring 2; the inner side wall of the connecting sleeve 4 is provided with a plurality of slots 6 adapted to the connecting columns 3 along its own axial direction, and a recessed portion adapted to the barb 5 is provided in the slot 6, and the connecting column 3 is plug-connected to the connecting sleeve 4.

[0029] Among them, the support ring 1 is arranged inside the bellows 13 to apply centrifugal force to the bellows 13, so that the bellows 13 can be supported from the inside to the outside; the fixing ring 2 is arranged outside the bellows 13 to apply centripetal force to the bellows 13, so that the bellows 13 can be constrained from the outside to the inside, so that the support ring 1 and the fixing ring 2 cooperate inside and outside the bellows 13 to clamp and fix the bellows 13; and the support ring 1 and the fixing ring 2 can ensure the fixing strength of the bellows 13 without flattening the bellows 13, that is, the deformation of the bellows 13 can be minimized.

[0030] The plurality of connecting columns 3 are parallel to each other and are arranged around one end of the fixing ring 2. For example, the plurality of connecting columns 3 are arranged at intervals in the circumferential direction at the end of the fixing ring 2, so that the restraining force of the connecting sleeve 4 can be transmitted to the fixing ring 2 through the plurality of connecting columns 3, so that the fixing ring 2 applies a centripetal force to the bellows 13. It is easy to understand that the length direction of the plurality of connecting columns 3 is the same as the length direction of the fixing ring 2.

[0031] A barb 5 is arranged on the side wall of the end of the connecting column 3 away from the fixing ring 2; the inner side wall of the connecting sleeve 4 is provided with a plurality of slots 6 adapted to the connecting column 3 along its own axial direction, and a recessed portion adapted to the barb 5 is provided in the slot 6, so that the connecting column 3 and the connecting sleeve 4 are plugged and connected through the concave-convex cooperation between the recessed portion and the barb 5. In actual use, the connecting column 3 can be first inserted into the slot 6, and the connecting column 3 moves forward along the track of the slot 6 until the barb 5 enters the recessed portion, and the connecting column 3 and the connecting sleeve 4 will be firmly fixed together and difficult to separate.

[0032] The present application provides a support ring 1 on the inner wall of the bellows 13 so that the support ring 1 abuts against the inner wall of the bellows 13 to apply centrifugal force to the bellows 13; and provides a fixing ring 2 on the outside of the bellows 13 to apply centripetal force to the bellows 13; the support ring 1 and the fixing ring 2 cooperate with each other to firmly fix the bellows 13, and the bellows 13 and the connecting device 4 are not easily separated.

[0033] The bellows connecting device provided in the present application can connect a section of bellows 13 with other pipes, and can also connect two sections of bellows 13. When the two sections of bellows 13 are connected, a support ring 1 and a fixing ring 2 can also be provided at the end of the connecting sleeve 4 away from the connecting column 3, and the bellows at both ends of the connecting sleeve 4 can have the same connection structure as the bellows connecting device in the embodiment of the present application, that is, the two ends of the connecting sleeve 4 have the same structure, which will not be repeated here.

[0034] In addition, in this exemplary embodiment, the support ring 1 is made of a rigid material. As is known, a rigid material is not easily deformed, so the support ring 1 made of the rigid material can stably apply centrifugal force to the bellows 13, thereby forming a stable support for the bellows 13 inside the bellows 13.

[0035] In an exemplary embodiment, the side surface of the support ring 1 contacting the inner wall of the bellows 13 and / or the side surface of the fixing ring 2 contacting the outer wall of the bellows 13 are rough surfaces. Specifically, when the side surface of the support ring 1 contacting the inner wall of the bellows 13 is a rough surface, the friction between the support ring 1 and the inner wall of the bellows 13 can be increased, so that the support ring 1 is not easy to slide in the bellows 13, and the supporting effect of the support ring 1 on the inner wall of the bellows 13 is fully guaranteed. Similarly, when the side surface of the fixing ring 2 contacting the outer wall of the bellows 13 is also a rough surface, the friction between the fixing ring 2 and the outer wall of the bellows 13 can be increased, and the probability of relative sliding between the fixing ring 2 and the bellows 13 can also be avoided or reduced, thereby improving the matching effect of the fixing ring 2 and the support ring 1. It should be understood that in other embodiments, a friction pad can be provided between the support ring 1 and the inner wall of the bellows 13 and / or a friction pad can be provided between the fixing ring 2 and the outer wall of the bellows 13 to increase the friction between the bellows 13 and the corresponding structure.

[0036] As an optional embodiment of the present application, the support ring 1 is cylindrical, such as Figure 1 and Figure 2 As shown, the axial direction of the support ring 1 is the same as the length direction of the bellows 13, and the inner diameter of the support ring 1 gradually increases from both ends to the middle.

[0037] The axial direction of the support ring 1 is the same as the length direction of the bellows 13, which means that the support ring 1 extends inside the bellows 13 along the length direction of the bellows 13, and the opening direction of the support ring 1 is consistent with the pipeline passage direction of the bellows 13, and will not block the passage of the fluid in the bellows 13. The inner diameter of the support ring 1 gradually increases from both ends to the middle, from Figure 1 and Figure 2 It is not difficult to see that the side wall of the support ring 1 is a structure that is thick in the middle and thin on both sides. This is done to better fit the shape of the bellows 13, better cooperate with the fixing ring 2, and improve the fixing effect of the bellows 13.

[0038] As an optional embodiment of the present application, Figure 4 As shown, the fixing ring 2 includes a first arc-shaped structure and a second arc-shaped structure, one end of the first arc-shaped structure is rotatably connected to one end of the second arc-shaped structure by a hinge 7, and the other end of the first arc-shaped structure and the other end of the second arc-shaped structure are both provided with a connecting portion 8, a threaded hole is opened on the connecting portion 8, and the connecting portion 8 is connected by bolts.

[0039] The fixing ring 2 includes a first arc structure and a second arc structure, and the lengths of the first arc structure and the second arc structure can be the same or different, and the combination of the two can form a complete annular structure. One end of the first arc structure is rotatably connected with one end of the second arc structure through a hinge 7, so that the first arc structure and the second arc structure can be more conveniently put on the wall of the bellows 13 to fix the bellows 13.

[0040] The other end of the first arc structure and the other end of the second arc structure are both provided with a connecting portion 8, and a threaded hole is provided on the connecting portion 8, and the two connecting portions 8 are connected by bolts. The connecting portion 8 is a protruding structure, and the bellows 13 is fixed by tightening the bolts. Exemplarily, before starting to fix, the bolts on the connecting portion 8 can be loosened first, so that the first arc structure and the second arc structure are separated at the end with the connecting portion, and the first arc structure and the second arc structure can rotate around the hinge 7 at this time, so that the fixing ring 2 can be sleeved on the outer wall of the bellows 13; then, the bolts on the connecting portion 8 are tightened to connect the first arc structure and the second arc structure, so that the fixing ring 2 is sleeved on the outer periphery of the bellows 13.

[0041] As another optional embodiment of the present application, Figure 5 As shown, the fixing ring 2 may include a first arc structure and a second arc structure, and both ends of the first arc structure and the second arc structure are provided with a connecting portion 8, and a threaded hole is provided on the connecting portion 8, and the two connecting portions 8 opposite to each other are connected by bolts. For example, before starting to fix, the bolts on both sides can be loosened to separate the two arc structures, and then the two arc structures can be respectively sleeved on the outer surface of the bellows 13, and then the bolts can be tightened to stably fix the two arc structures on the outer periphery of the bellows 13, so as to apply a restraining force to the bellows 13. It can be seen that, through the cooperation of the bolts on both sides, the tight and loose cooperation of the two arc structures can also be achieved, and the fixing ring 2 can be sleeved on the outer wall of the bellows 13. The structure of the connecting portion 8 is similar to that of the above-mentioned embodiment, and will not be repeated here.

[0042] As an optional embodiment of the present application, Figure 1 , Figure 6 and Figure 7As shown, the outer side wall of the connecting sleeve 4 may be sleeved with a reinforcement ring 9 .

[0043] The outer wall of the connecting sleeve 4 is sleeved with a reinforcing ring 9 to increase the structural strength of the connecting sleeve 4. In this exemplary embodiment, the connecting sleeve 4 can also be made of a rigid material.

[0044] As an optional embodiment of the present application, Figure 1 and Figure 2 As shown, a concave portion is provided on one side surface of the fixing ring 2 contacting the bellows 13 , and the concave portion is adapted to the curvature of the bellows 13 .

[0045] The surface of the fixing ring 2 on one side that contacts the bellows 13 is concave, so that the fixing ring 2 can better fit the wall of the bellows 13, making the support ring 1 and the fixing ring 2 more firmly fixed.

[0046] Of course, in other embodiments, the fixing ring 2 may also be an arc-shaped structure with a smaller thickness and a certain elasticity, for example, it may be an iron sheet. In this way, when the fixing ring 2 is sleeved on the outer wall of the bellows 13, the elastic characteristics of the fixing ring 2 can be utilized to make the fixing ring 2 fit well to the outer surface of the bellows 13, thereby better exerting a restraining force on the bellows 13.

[0047] As an optional embodiment of the present application, the bellows connecting device of the present application can be used to connect the bellows 13 and the extension tube 10, such as Figure 6 and Figure 7 As shown, the extension tube 10 is connected to one end of the connecting sleeve 4 away from the fixing ring 2 , and the extension tube 10 is threadedly connected to the connecting sleeve 4 .

[0048] The extension tube 10 is threadedly connected to the connecting sleeve 4, and the threaded connection is a detachable connection mode, which makes the installation of the extension tube 10 and the connecting sleeve 4 more flexible and convenient. The extension tube 10 can be a metal round tube, a hard plastic round tube, or a pipe made of other rigid materials.

[0049] For example, Figure 6 As shown, when the radial dimension of the connecting sleeve 4 is larger than the radial dimension of the extension tube 10, an internal thread can be opened on the inner wall of the connecting sleeve 4, and an external thread 11 can be set at the connecting end of the extension tube 10 and the connecting sleeve 4, so that the connecting sleeve 4 and the extension tube 10 are threadedly connected.

[0050] Alternatively, in other embodiments, when the radial dimension of the connecting sleeve 4 is smaller than the radial dimension of the extension tube 10, an external thread can be provided on the outer wall of the connecting sleeve 4, and an internal thread 12 can be provided at the connecting end of the extension tube 10 and the connecting sleeve 4, so that the connecting sleeve 4 and the extension tube 10 are threadedly connected.

[0051] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A bellows connection device, characterized in that: include: A support ring, arranged inside the bellows and abutting against the inner wall of the bellows, the support ring being used to apply centrifugal force to the bellows; A fixing ring, arranged outside the bellows, and used for applying a centripetal force to the bellows; A plurality of connecting posts are arranged parallel to each other and around one end of the fixing ring, and a barb is arranged on the outer side wall of one end of the connecting post away from the fixing ring; The inner side wall of the connecting sleeve is provided with a plurality of slots adapted to the connecting column along its own axial direction, the slots are provided with recessed portions adapted to the barbs, and the connecting column is plug-connected to the connecting sleeve.

2. The bellows connection device according to claim 1, characterized in that: The support ring is made of a rigid material.

3. The bellows connection device according to claim 2, characterized in that: A side surface of the support ring contacting the inner wall of the bellows and / or a side surface of the fixing ring contacting the outer wall of the bellows are rough surfaces.

4. The bellows connection device according to claim 1, characterized in that: The support ring is cylindrical, the axial direction of the support ring is the same as the length direction of the bellows, and the inner diameter of the support ring gradually increases from both ends to the middle.

5. The bellows connection device according to claim 1, characterized in that: The fixing ring includes a first arc-shaped structure and a second arc-shaped structure; One end of the first arc structure is rotatably connected to one end of the second arc structure through a hinge, and the other end of the first arc structure and the other end of the second arc structure are both provided with a connecting part, and a threaded hole is opened on the connecting part, and the two connecting parts are connected by bolts.

6. The bellows connection device according to claim 1, characterized in that: The fixing ring includes a first arc-shaped structure and a second arc-shaped structure; Both ends of the first arc structure and the second arc structure are provided with connecting parts, threaded holes are opened on the connecting parts, and the two connecting parts opposite to each other are connected by bolts.

7. The bellows connection device according to claim 1, characterized in that: The outer side wall of the connecting sleeve is sleeved with a reinforcement ring.

8. The bellows connection device according to claim 1, characterized in that: A concave portion is arranged on a surface of one side of the fixing ring contacting the bellows, and the concave portion is adapted to the curvature of the bellows.

9. The bellows connection device according to claim 1, characterized in that: The bellows connecting device is used to connect the bellows and the extension pipe; The extension tube is threadedly connected to the connecting sleeve.

10. The bellows connection device according to claim 9, characterized in that: The inner side wall of the connecting sleeve is provided with an internal thread, and the connecting end of the extension tube and the connecting sleeve is provided with an external thread; or, The outer side wall of the connecting sleeve is provided with an external thread, and the connecting end of the extension tube and the connecting sleeve is provided with an internal thread.

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