Waterproof o-ring for press-fitting of pipes

Abstract

Provided is a waterproof O-ring for press-fitting of pipes, comprising: a body (2) configured to be connected to an insertion end of a press-fitting member (1). An axial through hole (3) is formed in the body (2) in the axial direction of the press-fitting member (1); the axial through hole (3) allows for insertion of a pipe (4); and a continuous loop of elastic skirt edge (5) are arranged on the inner circumference of the axial through hole (3); the inner diameter of the elastic skirt edge (5) is smaller than the outer diameter of the pipe (4); and when the pipe (4) is inserted, the elastic skirt edge (5) fits with the peripheral wall of the pipe (4). The waterproof O-ring is conductive to solving the problem of corrosion, and is suitable for press-fitting of pipes.

Description

A waterproof ring for pipe clamp connection Technical Field

[0001] The utility model relates to the technical field of pipeline connection, and more precisely to a waterproof ring used for pipeline compression connection. Background Art

[0002] A pipeline is a device connected by pipes, valves, and other components for conveying gases, liquids, or fluids containing solid particles. Compression fittings are a type of compression piping system. This means that two pipes are connected using compression fittings. During compression, a compression tool is used to compress and deform the fittings, securing the two pipes together. The pipes are designed to withstand the internal fluid pressure and remain together under the designed pressure. Furthermore, a leak-proof seal is achieved. Compression fittings are a purely mechanical connection structure that offers the advantages of high efficiency and reliability.

[0003] However, the applicant discovered that in actual application, the press-fit connection was subject to corrosion. After further analysis, it was found that due to the deformation caused by the press-fit connection, a certain gap existed between the sealing ring of the press-fit connection and the insertion port of the press-fit connection (the pipe was inserted into the press-fit connection from the insertion port). The distribution of the gap was random, and the severity of the corrosion was also different.

[0004] The applicant has proposed a waterproof ring for pipe compression connection, which is helpful in solving the problem of rust and is suitable for pipe compression connection. Technical issues

[0005] The technical problem to be solved by the utility model is to provide a waterproof ring for pipe clamping connection, which is conducive to solving the problem of rust and is suitable for pipe clamping connection. Technical Solutions

[0006] The utility model provides a waterproof ring for pipe compression connection, comprising a main body for connecting to an insertion end of a compression connector, wherein the main body is provided with an axial through hole along the axial direction of the compression connector, the axial through hole is for the pipe to be sleeved and inserted, and a continuous circle of elastic skirt is provided on the inner circumference of the axial through hole, the inner diameter of the elastic skirt is smaller than the outer diameter of the pipe, and when the pipe is sleeved and inserted, the elastic skirt fits against the outer circumferential wall of the pipe. Beneficial effects

[0007] In the present technical solution, when the waterproof ring is used for pipe crimping connection, the waterproof ring is first connected to the insertion end of the crimping connector, that is, the main body is connected to the insertion end of the crimping connector, and then the pipe is inserted into the waterproof ring and the crimping connector in sequence, and then crimped with a crimping tool. During crimping, the crimping connector is deformed by the crimping tool to form a crimping connection structure. Since the inner diameter of the elastic skirt is smaller than the outer diameter of the pipe, when the pipe is inserted, the elastic skirt is carried by the outer wall of the pipe to fit in a trumpet shape or a sleeve shape on the outer wall of the pipe. Although the crimping connector is deformed by the crimping tool, the elastic skirt is elastic and soft. Therefore, after the crimping connector is deformed, the elastic skirt can still fit well on the outer wall of the pipe. The gap between the inner wall of the crimping connector and the outer wall of the pipe generated after the crimping connector is deformed can be automatically filled by the elastic skirt, thereby ensuring that a certain seal can be achieved.

[0008] From the above, it can be seen that before pressing, the waterproof ring is connected to the insertion end of the pressing connector, and can be inserted into the pipe, and the elastic skirt is carried by the outer wall of the pipe to fit the outer wall of the pipe in a trumpet shape or sleeve shape. Then, during and after pressing, the waterproof ring can automatically fill the gap according to the deformation situation, thereby ensuring that a certain seal can be achieved, blocking the continuous entry of external water vapor, condensed water, etc., thereby protecting the internal gear ring, which is conducive to avoiding the hidden dangers caused by rust failure of the gear ring, and is therefore conducive to solving the problem of rust, and is also suitable for pipeline compression connection.

[0009] In short, this waterproof ring is a special waterproof ring, specially designed for pipe compression connection.

[0010] As an improvement, an annular groove is provided on one side of the main body facing the insertion end, and the annular groove is used to be sleeved with the insertion end to connect the waterproof ring to the insertion end.

[0011] As an improvement, an elastic skirt is provided on the outer side of the axial through hole.

[0012] As an improvement, the outer side surface of the elastic skirt is flush with the outer end surface of the body.

[0013] As an improvement, the outer end surface of the main body is provided with a circumferential convex ring, which is arranged around the outer circumference of the outer side surface of the elastic skirt.

[0014] As an improvement, a radial positioning ring is further provided on the inner periphery of the axial through hole. When the pipe is inserted, the radial positioning ring is used to fit in with the outer peripheral wall of the pipe. The elastic skirt and the radial positioning ring are arranged in sequence along the insertion direction of the pipe. The inner diameter of the radial positioning ring is smaller than the inner diameter of the gear ring in the clamping connector.

[0015] As an improvement, the inner peripheral wall of the axial through hole serves as the radial positioning ring.

[0016] As an improvement, the main body and the elastic skirt are integrally formed into a whole by adopting a rubber molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a perspective schematic diagram of a waterproof ring for pipe compression connection disclosed herein.

[0018] FIG2 is a schematic half-sectional view of a waterproof ring for pipe compression connection according to the present invention.

[0019] Figure 3 is an enlarged view of A.

[0020] FIG4 is a schematic half-section view before compression connection.

[0021] FIG5 is a schematic half-section view after compression connection.

[0022] FIG6 is a cross-sectional view taken along the line AA.

[0023] Figure 7 is an enlarged view of B.

[0024] As shown in the figure: 1. Pressed connector; 2. Main body; 3. Axial through hole; 4. Tube; 5. Elastic skirt; 6. Annular groove; 7. Circumferential convex ring; 8. Radial positioning ring; 9. Gear ring; 10. Sealing ring; 11. Stopper; 12. Gap. Modes for Carrying Out the Invention

[0025] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0026] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0027] It should also be understood that the terms “comprises,” “includes,” “has,” “includes,” and “containing,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0028] As shown in Figures 1 to 3, this embodiment discloses a waterproof ring for pipe crimping connection, which is used for pipe crimping connection. The pipe crimping connection uses a crimping connector 1 to connect the pipe 4 through a crimping connection. The crimping connector 1 and the pipe 4 are both made of copper pipes, for example. The two ends of the crimping connector 1 are insertion ends, and the structure is symmetrically arranged on the left and right. A stop 11 is provided in the crimping connector 1. When the pipe 4 is inserted from the insertion end, it can be axially positioned by relying on the stop 11.

[0029] As shown in Figures 4 and 5, a gear ring 9 and a sealing ring 10 are installed in sequence inside the compression connector 1 along the insertion direction of the tube 4. When the tube 4 is inserted, the tube 4 will be fitted with the gear ring 9 and the sealing ring 10 in sequence until it is inserted into the stop 11 for axial positioning.

[0030] The radial arrows shown in FIG. 5 indicate the location and direction of the pressing force exerted by the pressing tool on the outer wall of the press connector 1 .

[0031] As shown in Figures 1 to 3, the waterproof ring of the present disclosure includes a body 2 for connecting to the insertion end of a compression connector 1. The body 2 is provided with an axial through hole 3 along the axial direction of the compression connector 1. The axial through hole 3 is for the insertion of a tube 4. A continuous circle of elastic skirt pieces 5 are provided on the inner circumference of the axial through hole 3. The inner diameter of the elastic skirt piece 5 is smaller than the outer diameter of the tube 4. When the tube 4 is inserted, the elastic skirt piece 5 fits against the outer circumferential wall of the tube 4. During compression, the compression connector 1 will deform to produce a gap 12 between the inner wall of the compression connector 1 and the outer wall of the tube 4. The elastic skirt piece can automatically fill the gap, thereby ensuring that a certain degree of sealing can be achieved.

[0032] In some embodiments, as shown in Figures 2 and 3, the side of the body 2 facing the insertion end is provided with an annular groove 6, which is used to be sleeved with the insertion end to connect the waterproof ring to the insertion end. This makes it easier to connect the body 2 to the insertion end, that is, to connect the waterproof ring to the insertion end.

[0033] In order to further facilitate the connection, the cross-section of the annular groove 6 is set in an eight-shaped shape with a large opening and a narrow bottom. This makes it convenient for the annular groove 6 to be sleeved on the insertion end. As the sleeve goes deeper, the narrow part can fit tightly against the insertion end and fix the waterproof ring axially.

[0034] In some embodiments, as shown in Figures 2 and 3, an elastic skirt 5 is provided on the outside of the axial through hole 3. In this way, the elastic skirt 5 can fit with the outer wall when the tube 4 is inserted.

[0035] In some embodiments, as shown in Figures 2 and 3, the outer side surface of the elastic skirt 5 is flush with the outer end surface of the body 2. With this design, the inner circumferential wall of the axial through hole 3 can be flat, and there will be no hard protrusion inward due to the provision of the elastic skirt 5. In addition, this improvement also facilitates the production of the elastic skirt 5 and reduces the manufacturing difficulty.

[0036] In some embodiments, as shown in Figures 2 and 3, the outer end surface of the body 2 is provided with a circumferential protrusion 7, which is arranged around the outer circumference of the outer side surface of the elastic skirt 5. The circumferential protrusion 7 may be present or not. For example, the waterproof ring in Figures 4 and 5 does not have a circumferential protrusion 7.

[0037] In some embodiments, as shown in Figures 2, 3, 4, and 5, a radial positioning ring 8 is further provided on the inner circumference of the axial through hole 3. When the tube 4 is inserted through the sleeve, the radial positioning ring 8 is used to fit closely with the outer circumferential wall of the tube 4. The elastic skirt 5 and the radial positioning ring 8 are arranged in sequence along the insertion direction of the tube 4. The inner diameter of the radial positioning ring 8 is smaller than the inner diameter of the gear ring 9 in the press connector 1. With this design, the tube 4 is radially positioned during insertion, and the outer wall of the tube 4 is less likely to rub against the teeth of the gear ring 9, thereby reducing the risk of damage to the outer wall of the tube 4 during insertion.

[0038] In some embodiments, as shown in Figures 2, 3, 4, and 5, the inner peripheral wall of the axial through hole 3 serves as the radial positioning ring 8. This simplifies production.

[0039] In some embodiments, as shown in Figures 1 and 2, the body 2 and the elastic skirt 5 are integrally formed into a whole by a rubber molding process. This facilitates production, and the rubber molding process is a prior art and will not be described in detail.

[0040] When understanding the present invention, if necessary, the above structure can be understood with reference to other embodiments / drawings, and will not be described in detail here.

[0041] The above description is merely an illustrative embodiment of the present invention, and therefore any equivalent changes or modifications made according to the structure, features and principles described in the scope of protection of the present invention are included in the scope of protection of the present invention.

Claims

1. A waterproof ring for pipe clamping connection, characterized in that: The invention comprises a body (2) for connecting to an insertion end of a compression connector (1), wherein the body (2) is provided with an axial through hole (3) along the axial direction of the compression connector (1), wherein a tube (4) is inserted into the axial through hole (3), and a continuous elastic skirt (5) is provided on the inner periphery of the axial through hole (3), wherein the inner diameter of the elastic skirt (5) is smaller than the outer diameter of the tube (4), and when the tube (4) is inserted into the axial through hole (3), the elastic skirt (5) is fitted to the outer peripheral wall of the tube (4).

2. A waterproof ring for pipe compression connection according to claim 1, characterized in that: An annular groove (6) is provided on one side of the body (2) facing the insertion end, and the annular groove (6) is used to be sleeved with the insertion end to achieve connection of the waterproof ring to the insertion end.

3. A waterproof ring for pipe compression connection according to claim 1 or 2, characterized in that: An elastic skirt (5) is provided on the outer side of the axial through hole (3).

4. A waterproof ring for pipe compression connection according to claim 3, characterized in that: The outer side surface of the elastic skirt (5) is flush with the outer end surface of the body (2).

5. The waterproof ring for pipe compression connection according to claim 4, characterized in that: The outer end surface of the body (2) is provided with a circumferential convex ring (7), and the circumferential convex ring (7) is arranged around the outer circumference of the outer side surface of the elastic skirt piece (5).

6. A waterproof ring for pipe compression connection according to claim 1 or 2, characterized in that: A radial positioning ring (8) is also provided on the inner periphery of the axial through hole (3). When the tube (4) is inserted into the tube, the radial positioning ring (8) is used to fit in a sleeved manner with the outer peripheral wall of the tube (4). The elastic skirt (5) and the radial positioning ring (8) are arranged in sequence along the insertion direction of the tube (4). The inner diameter of the radial positioning ring (8) is smaller than the inner diameter of the gear ring (9) in the clamping connector (1).

7. The waterproof ring for pipe compression connection according to claim 6, characterized in that: The inner peripheral wall of the axial through hole (3) serves as the radial positioning ring (8).

8. The waterproof ring for pipe compression connection according to claim 1, characterized in that: The main body (2) and the elastic skirt (5) are integrally formed into a whole by adopting a rubber molding process.

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