Sealing ring for splayed double-wall corrugated pipe

Abstract

The utility model relates to the technical field of pipe fittings, and discloses a sealing ring for a splayed double-wall corrugated pipe, which comprises two axial sealing strips, four radial sealing rings are mounted between the two axial sealing strips, and the four radial sealing rings are respectively positioned at two ends of the two axial sealing strips in pairs; a U-shaped groove is formed in the upper surface of each radial sealing ring, and two side face contact faces and a top face contact face are arranged on the lower surface of each radial sealing ring. According to the utility model, the cross section of the radial sealing ring is designed to be splayed, and the top surface contact surface and the two side surface contact surfaces are contacted at the corrugated outer wall at the same time, so that the best sealing effect can be achieved through triple sealing; as the U-shaped groove is formed in the radial sealing ring, when the contact surface of the top surface is in contact with the outer wall of the corrugated pipe to generate force, the contact surfaces of the two side surfaces of the sealing ring additionally generate force on the corrugated pipe under the action of extrusion, and the sealing of the two sides is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, and particularly relates to a sealing ring for an eight-shaped double-wall corrugated pipe. Background Art

[0002] The connection of polyethylene double-wall corrugated pipes mostly adopts socket connection. A sealing ring is sleeved on the socket end of the small pipe, and then the socket of the small pipe with the sealing ring is inserted into the socket of the large pipe. There are disadvantages such as easy deformation and damage of the socket, and the connection is not resistant to settlement and is prone to looseness. Therefore, socket connection can be used. During sealing, the sealing ring is sleeved on the connection of the double-wall corrugated pipe, and the sealing ring is compressed by a pressing device to form a seal. During use, the sealing ring can withstand a certain pressure and maintain the sealing performance of the pipeline system.

[0003] The utility model patent with the publication number of CN 206221656 U discloses a "sealing ring for double-wall corrugated pipe". This patent designs a sealing ring for double-wall corrugated pipe composed of a sealing outer ring, a sealing inner ring and a central ring. The sealing outer ring is divided into an outer wall, an inner wall and a filling layer. A corrugated pad is arranged on the inner wall of the sealing outer ring, a clamping sleeve is arranged on the surface of the corrugated pad, the bottom of the outer ring is fixedly connected with the central ring, and the bottom of the central ring is fixedly connected with the sealing inner ring. The structure of the sealing inner ring is the same as that of the sealing outer ring. By setting the clamping sleeve and the corrugated pad, complete sealing during thermal expansion and contraction is achieved. However, the structure is relatively complex, difficult to manufacture, and there are many voids in the structure. During the process of discharging sewage, a part of it will remain in the sealing ring and continuously corrode the sealing ring, affecting the service life.

[0004] The utility model patent with the publication number of CN 205278636 U discloses a "modified sealing ring for double-wall corrugated pipe". This patent designs a modified sealing ring for double-wall corrugated pipe composed of a sealing ring body and a sealing ring end. The sealing ring end is set as a trumpet-shaped structure. A groove is arranged in the middle position at the top of the sealing ring end, and the contact surface at the top of the sealing ring end is set as an inclined surface structure; the distance between the two side surfaces of the sealing ring end is symmetrically and coincidentally arranged with the distance between the adjacent pipe walls on the surface of the double-wall corrugated pipe. This product has a simple structure and is easy to operate. However, the fixing of this sealing ring fixed at the bottom of the corrugation of the corrugated pipe is not very reliable. When the foundation settles, displacement will occur at the socket connection part of the double-wall corrugated pipe, and at this time, the sealing ring is prone to failure.

[0005] Therefore, a sealing ring for an eight-shaped double-wall corrugated pipe is proposed. Content of the Utility Model

[0006] The main purpose of the utility model is to provide a sealing ring for an eight-shaped double-wall corrugated pipe, which can effectively solve the problems that the existing sealing ring has a relatively complex structure, is difficult to manufacture, has many voids in the structure, a part of it will remain in the sealing ring and continuously corrode the sealing ring during the process of discharging sewage, affecting the service life, and when displacement occurs at the socket connection part of the double-wall corrugated pipe, the sealing ring is prone to failure.

[0007] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0008] A sealing ring for an eight-shaped double-wall corrugated pipe includes two axial sealing strips, and four radial sealing rings are installed between the two axial sealing strips. The four radial sealing rings are divided into two groups, and are respectively located at both ends of the two axial sealing strips;

[0009] On the upper surface of each radial sealing ring, a U-shaped groove is provided, and on the lower surface of each radial sealing ring, two side contact surfaces and a top contact surface are provided.

[0010] Furthermore, two conical protrusions are installed inside the U-shaped groove. The axial directions of the two conical protrusions are the same and are both perpendicular to the axial sealing strip.

[0011] Furthermore, a rectangular protrusion is fixedly installed on the upper surface of the axial sealing strip, and the rectangular protrusion is located on one side of the connection between the axial sealing strip and the radial sealing ring.

[0012] Furthermore, the included angle at the bottom end inside the U-shaped groove is 110° - 130°, and the external included angle at the upper part of the top end of the U-shaped groove is 120° - 140°.

[0013] Furthermore, the shape formed by the two side contact surfaces and the top contact surface is eight-shaped, and the two side contact surfaces and the top contact surface are in contact with the outer wall of the corrugated pipe at the same time.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. By designing the cross-sectional shape of the radial sealing ring as eight-shaped, and the top contact surface and the two side contact surfaces are in contact with the corrugated outer wall at the same time, triple sealing can achieve the best sealing effect.

[0016] 2. By providing a U-shaped groove on the radial sealing ring, when a force is generated by the contact between the top contact surface and the outer wall of the corrugated pipe, an additional force is generated on both sides of the sealing ring by extrusion, further strengthening the sealing on both sides.

[0017] 3. By providing conical protrusions on the radial sealing ring, the conical protrusions can still be accurately positioned even after being worn for a period of time.

[0018] 4. During installation, the sealing ring of the present utility model is installed at the top of the corrugation of the corrugated pipe, and the required material is much less than that of the sealing ring provided at the bottom of the corrugation, saving costs and improving the economy of the product.

[0019] Parts not involved in this device are the same as those in the prior art or can be implemented using the prior art. Brief Description of the Drawings

[0020] Figure 1 FIG. is a schematic diagram of the use state of a sealing ring for an eight-shaped double-wall corrugated pipe of the present utility model.

[0021] Figure 2 FIG. is a schematic diagram of the overall structure of a sealing ring for an eight-shaped double-wall corrugated pipe of the present utility model.

[0022] Figure 3 FIG. is a partial cross-sectional view of a sealing ring for an eight-shaped double-wall corrugated pipe of the present utility model.

[0023] Figure 4 FIG. is a sealing ring for an eight-shaped double-wall corrugated pipe of the present utility model Figure 3 enlarged view of A in.

[0024] Figure 5 FIG. is a deformation schematic diagram of a sealing ring for an eight-shaped double-wall corrugated pipe of the present utility model under the use state.

[0025] In the figure: 1, axial sealing strip; 2, rectangular protrusion; 3, radial sealing ring; 4, U-shaped groove; 5, conical protrusion; 6, side contact surface; 7, top contact surface. Detailed Description of the Preferred Embodiments

[0026] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] As Figures 1 - 5 shown, a sealing ring for an eight-shaped double-wall corrugated pipe includes two axial sealing strips 1, and four radial sealing rings 3 are installed between the two axial sealing strips 1. The four radial sealing rings 3 are divided into two groups, and are respectively located at both ends of the two axial sealing strips 1;

[0028] Each upper surface of the radial sealing ring 3 is provided with a U-shaped groove 4, and each lower surface of the radial sealing ring 3 is provided with two side contact surfaces 6 and a top contact surface 7.

[0029] It should be noted that, as Figure 3 and Figure 4 shown, the radial sealing ring 3 in the embodiment of the present utility model is provided with a U-shaped groove 4. When a force is generated by the contact between the top contact surface 7 and the outer wall of the corrugated pipe, an additional force is generated on the corrugated pipe by the two side contact surfaces 6 of the sealing ring through the extrusion effect, further strengthening the sealing on both sides.

[0030] Specifically, the cross-sectional shape of the radial sealing ring 3 in the embodiment of the utility model is in an eight-character shape, and it contacts the corrugated outer wall simultaneously through the top surface contact surface 7 and the two side surface contact surfaces 6, as Figure 5 shown. The triple seal can achieve the best sealing effect. The material of the sealing ring is made of rubber. After being subjected to an external force, the volume of the rubber shrinks or its shape changes. The inner bottom angle of the U-shaped groove 4 is 110°-130°, and the outer upper angle of the top of the U-shaped groove 4 is 120°-140°. The normal compression amount of the rubber ring along the contact surface between the rubber ring and the corrugated pipe is larger, and the sealing effect is more stable.

[0031] In some embodiments, two conical protrusions 5 are installed inside the U-shaped groove 4. The axial directions of the two conical protrusions 5 are the same and are both perpendicular to the axial sealing strip 1. The conical protrusions 5 can still be accurately positioned after being worn for a period of time.

[0032] A rectangular protrusion 2 is fixedly installed on the upper surface of the axial sealing strip 1, and the rectangular protrusion 2 is located on one side of the connection between the axial sealing strip 1 and the radial sealing ring 3. Adopting the above technical solution can make the sealing ring more firmly installed in the sleeve to be installed.

[0033] The shape formed by the two side surface contact surfaces 6 and the top surface contact surface 7 is in an eight-character shape, and the two side surface contact surfaces 6 and the top surface contact surface 7 contact the corrugated outer wall simultaneously.

[0034] Therefore, when the embodiment of the utility model is installed, the sealing ring is installed at the top of the corrugation of the corrugated pipe, and the material required is much less than that of the sealing ring arranged at the bottom of the corrugation.

[0035] It should be noted that the utility model is a sealing ring for an eight-character-shaped double-wall corrugated pipe. When in use, first, as Figure 1 shown, install the sealing ring for the eight-character-shaped double-wall corrugated pipe on the sleeve. The radial sealing ring 3 is installed in the corresponding trapezoidal groove on the sleeve, and the conical protrusion 5 is installed into the corresponding upper conical groove. The rectangular protrusion 2 in the axial sealing strip 1 is installed into the corresponding groove, and then install the upper and lower sleeves with the installed sealing rings for the eight-character-shaped double-wall corrugated pipe on the double-wall corrugated pipe;

[0036] Among them, the sealing ring is installed at the top of the corrugation of the corrugated pipe, and the material required is much less than that of the sealing ring arranged at the bottom of the corrugation, saving costs and improving the economy of the product.

[0037] The cross-sectional shape of the radial sealing ring 3 is in an eight-character shape, and it contacts the corrugated outer wall simultaneously through the top surface contact surface 7 and the two side surface contact surfaces 6, as Figure 5As shown, the triple seal can achieve the best sealing effect. When the U-shaped groove 4 generates a force at the contact surface 7 of the top surface and the outer wall of the corrugated pipe, an additional force is generated on the corrugated pipe by the two side contact surfaces 6 of the sealing ring through the extrusion effect, further strengthening the sealing on both sides, which is relatively practical.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing ring for an eight-shaped double-wall corrugated pipe, characterized in that: It comprises two axial sealing strips (1), four radial sealing rings (3) are installed between the two axial sealing strips (1), and the four radial sealing rings (3) are arranged in groups of two at both ends of the two axial sealing strips (1); The upper surface of each radial sealing ring (3) is provided with a U-shaped groove (4), and the lower surface of each radial sealing ring (3) is provided with two side contact surfaces (6) and a top contact surface (7).

2. The sealing ring for an eight-shaped double-wall corrugated pipe according to claim 1, characterized in that: Two conical protrusions (5) are installed inside the U-shaped groove (4), and the two conical protrusions (5) have the same axial direction and are perpendicular to the axial sealing strip (1).

3. The sealing ring for an eight-shaped double-wall corrugated pipe according to claim 1, characterized in that: A rectangular protrusion (2) is fixedly mounted on the upper surface of the axial sealing strip (1), and the rectangular protrusion (2) is located on one side of the connection between the axial sealing strip (1) and the radial sealing ring (3).

4. The sealing ring for an eight-shaped double-wall corrugated pipe according to claim 1, characterized in that: The inner bottom angle of the U-shaped groove (4) is 110° to 130°, and the outer upper angle of the top of the U-shaped groove (4) is 120° to 140°.

5. The sealing ring for an eight-shaped double-wall corrugated pipe according to claim 1, characterized in that: The shape formed by the two side contact surfaces (6) and the top contact surface (7) is an eight-shaped shape, and the two side contact surfaces (6) and the top contact surface (7) are in contact with the outer wall of the corrugated tube at the same time.

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