Double-sided mesh fitting cone-shaped rubber sealing ring

Abstract

The double-sided mesh fitting cone-shaped rubber sealing ring comprises a sealing ring body with a center line arranged horizontally in the left and right directions, the outer circle of the sealing ring body is a cone shape with a thick left side and a thin right side, the inner hole of the sealing ring body is a cylindrical hole, the outer circle of the sealing ring body is provided with an outer spiral cross-type auxiliary water-blocking structure, and the inner circle of the sealing ring body is provided with an inner spiral cross-type auxiliary water-blocking structure. The present invention has a scientific principle, a compact structure, and a reasonable design. The sealing ring body, the outer spiral cross-type auxiliary water-blocking structure, and the inner spiral cross-type auxiliary water-blocking structure are made of rubber material in one piece, and a wide-surface tight-fitting seal is adopted. It is applicable to all socket-type pipe connections, and the sealing performance is greatly improved. The outer spiral cross-type auxiliary water-blocking structure and the inner spiral cross-type auxiliary water-blocking structure have a certain thickness and good elasticity, and appropriate compensation adjustment will be performed when the two socket-type pipes move relative to each other.

Description

Technical Field

[0001] The invention belongs to the technical field of socket-and-spigot pipe sealing, and in particular relates to a double-sided mesh-fitted frustum-shaped rubber sealing ring. Background Art

[0002] At present, the common bell-and-spigot pipes on the market are made of plastic and reinforced concrete. One end of the bell-and-spigot pipe is a spigot, and the other end is a socket with an inner diameter larger than the outer diameter of the spigot. When installing and connecting, the spigot of one bell-and-spigot pipe is inserted into the spigot of another bell-and-spigot pipe, and a sealing ring is used to seal the annular gap of the connection. For bell-and-spigot pipes made of plastic, the inner ring of the socket is generally not round, especially the inner wall of the socket of high-density polyethylene (HDPE) double-wall winding pipe and double-layer axial hollow pipe is concave and uneven, and the natural sealing effect is not good when using conventional sealing rings for sealing. For bell-and-spigot pipes made of reinforced concrete, there is also the problem of an inner ring that is not round, and there are many bubble pits on the inner wall (this is a problem with the existing casting process), and the conventional sealing rings used also have the defect of not sealing tightly. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a double-sided mesh-fitted frustum-shaped rubber sealing ring with good sealing performance and wide application.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: a double-sided mesh-fitted frustum-type rubber sealing ring, comprising a sealing ring body whose center line is horizontally arranged along the left and right directions, the outer circle of the sealing ring body is a frustum-shaped cone that is thick on the left and thin on the right, the inner hole of the sealing ring body is a cylindrical hole, the outer circle of the sealing ring body is provided with an outer spiral cross-type auxiliary water-tightening structure, and the inner circle of the sealing ring body is provided with an inner spiral cross-type auxiliary water-tightening structure.

[0005] The external spiral cross-type auxiliary water-tightening structure includes mutually crossed external clockwise left-handed water-tightening ribs and external counterclockwise right-handed water-tightening ribs, the outer contours of the cross sections of the external clockwise left-handed water-tightening ribs and the external counterclockwise right-handed water-tightening ribs are scalene triangles, an inner angle of the scalene triangle is greater than or equal to 90°, the inner angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body and the generatrix of the sealing ring body, and the two side edges of the angle corresponding to the generatrix of the sealing ring body in the scalene triangle are arc transition structures.

[0006] The internal spiral cross-type auxiliary water-tightening structure includes internal clockwise left-handed water-tightening ribs and internal counterclockwise right-handed water-tightening ribs that cross each other. The outer contour of the cross section of the internal clockwise left-handed water-tightening ribs and the internal counterclockwise right-handed water-tightening ribs is an unequal-sided triangle. An internal angle of the unequal-sided triangle is greater than or equal to 90°. The internal angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body and the generatrix of the sealing ring body. The angle corresponding to the generatrix of the sealing ring body in the unequal-sided triangle is a sharp angle.

[0007] A section of the left end portion of the outer circle of the sealing ring body is a cylindrical structure matched with the inner circle of the outer port of the socket of the socket-and-spigot type pipe.

[0008] The cross section of the right end portion of the outer circle of the sealing ring body is an arc structure or a sharp angle structure adapted to the innermost circumferential bottom surface of the socket of the socket-and-spigot pipe.

[0009] By adopting the above technical scheme, when applied to a bell-and-spigot pipe made of plastic material, the axial length of the sealing ring body shall not be less than the axial dimension of the conical part inside the socket of the bell-and-spigot pipe; when applied to a bell-and-spigot pipe made of reinforced concrete, the axial length of the sealing ring body shall not be less than the axial distribution length of the bubble pits inside the socket of the bell-and-spigot pipe.

[0010] The outer diameter of the smaller head at the right end of the sealing ring body is smaller than the maximum inner diameter of the socket of the spigot-and-socket pipe and larger than the minimum inner diameter of the spigot-and-socket pipe. The outer diameter of the larger head at the left end of the sealing ring body is greater than or equal to the maximum inner diameter of the conical section of the spigot-and-socket pipe. The inner diameter of the smaller head at the right end of the sealing ring body is smaller than the outer diameter of the spigot-and-socket pipe.

[0011] The external clockwise left-handed water-blocking ribs and the external counterclockwise right-handed water-blocking ribs on the outer circle of the sealing ring body form a set of external spiral cross-type auxiliary water-blocking structures. Two or more sets can be arranged on the outer circle of the sealing ring body to form a comprehensive water-blocking grid in surface contact with the inner wall of the socket.

[0012] The inner clockwise left-handed water-blocking ribs and the inner counterclockwise right-handed water-blocking ribs in the inner circle of the sealing ring body form a set of inner spiral cross-type auxiliary water-blocking structures. Two or more sets can be arranged on the outer circle of the sealing ring body to form a comprehensive water-blocking grid in surface contact with the outer circle of the socket.

[0013] The outer contour of the cross section of the water-blocking rib is an unequal-sided triangle, and an internal angle of the unequal-sided triangle is greater than or equal to 90°, preferably 90°. The internal angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body and the generatrix of the sealing ring body. The right side of the unequal-sided triangle is the water-facing surface. The pressure generated by the leaking water pressure on the water-facing surface can be decomposed in part in the radial direction and offset by the water pressure inside the drain pipe, thereby reducing the water pressure in the axial direction, and the force has stable and reliable sealing performance.

[0014] The angle corresponding to the generatrix of the sealing ring body in the unequal-sided triangle is a sharp angle, so that the inner clockwise left-handed water-blocking rib and the inner counterclockwise right-handed water-blocking rib can be pressed together with the outer circle of the socket to have a better water-blocking effect.

[0015] The two sides of the angle corresponding to the generatrix of the sealing ring body in the scalene triangle are arc transition structures. In this way, when the pre-installed socket of the present invention is inserted into the socket, the arc transition structure of the outer circle of the clockwise left-handed water-blocking rib and the counterclockwise right-handed water-blocking rib can slide with the inner wall of the socket without being deformed and turned outward due to resistance.

[0016] Since the inner circles of the sockets of the spigot and socket type pipes on the market are all conical structures with a small outer side and a large inner side, and there are also cases where a section of the inner circle of the outermost port of the socket is a cylindrical structure, therefore, the present invention designs a section of the left end portion of the outer circle of the sealing ring body to be a cylindrical structure that matches the inner circle of the outer port of the socket of the spigot and socket type pipe, thereby fully improving the sealing performance.

[0017] Since the innermost circumferential bottom surface of the socket of the socket-and-spigot pipe on the market is either arc-shaped or conical with the taper of the inner wall of the socket, the cross-section of the right end of the outer circle of the sealing ring body designed in the present invention is an arc structure or a sharp angle structure that matches the root of the socket of the socket-and-spigot pipe, thereby fully improving the sealing performance.

[0018] The taper of the outer circle of the sealing ring body in the present invention is consistent with the taper of the inner circle of the socket.

[0019] In summary, the present invention has a scientific principle, a compact structure, and a reasonable design. The sealing ring body, the outer spiral cross-type auxiliary water-blocking structure, and the inner spiral cross-type auxiliary water-blocking structure are made of rubber material in one piece, and a wide surface close fitting seal is adopted. It is applicable to all socket-type pipe connections, and the sealing performance is greatly improved. The outer spiral cross-type auxiliary water-blocking structure and the inner spiral cross-type auxiliary water-blocking structure have a certain thickness and good elasticity, and appropriate compensation adjustment will be performed when the two socket-type pipes move relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

[0021] Figure 2 yes Figure 1 Middle AA section view. DETAILED DESCRIPTION

[0022] 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.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 therefore cannot be understood as a limitation on the present invention.

[0024] like Figure 1 and Figure 2 As shown, the double-sided mesh-fitted frustum-shaped rubber sealing ring of the present invention comprises a sealing ring body 1 whose center line is horizontally arranged in the left-right direction, the outer circle of the sealing ring body 1 is a frustum-shaped cone that is thick on the left and thin on the right, the inner hole of the sealing ring body 1 is a cylindrical hole, the outer circle of the sealing ring body 1 is provided with an outer spiral cross-type auxiliary water-tightening structure, and the inner circle of the sealing ring body 1 is provided with an inner spiral cross-type auxiliary water-tightening structure.

[0025] The external spiral cross-type auxiliary water-tightening structure includes an external clockwise left-handed water-tightening rib 2 and an external counterclockwise right-handed water-tightening rib 3 that cross each other. The outer contour of the cross section of the external clockwise left-handed water-tightening rib 2 and the external counterclockwise right-handed water-tightening rib 3 is an unequal-sided triangle. An internal angle of the unequal-sided triangle is greater than or equal to 90°, preferably equal to 90°. The internal angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body 1 and the generatrix of the sealing ring body 1. The two side edges of the angle corresponding to the generatrix of the sealing ring body 1 in the unequal-sided triangle are arc transition structures 6.

[0026] The inner spiral cross-type auxiliary water-tightening structure includes inner clockwise left-handed water-tightening ribs 4 and inner counterclockwise right-handed water-tightening ribs 5 that cross each other. The outer contour of the cross section of the inner clockwise left-handed water-tightening ribs 4 and the inner counterclockwise right-handed water-tightening ribs 5 is an unequal-sided triangle. An inner angle of the unequal-sided triangle is greater than or equal to 90°, preferably equal to 90°. The inner angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body 1 and the generatrix of the sealing ring body 1. The angle corresponding to the generatrix of the sealing ring body 1 in the unequal-sided triangle is a sharp angle 7.

[0027] When applied to a bell-and-spigot pipe made of plastic material, the axial length of the sealing ring body 1 is not less than the axial dimension of the conical part inside the socket of the bell-and-spigot pipe; when applied to a bell-and-spigot pipe made of reinforced concrete, the axial length of the sealing ring body 1 is not less than the axial distribution length of the bubble pits inside the socket of the bell-and-spigot pipe.

[0028] The outer diameter of the smaller head at the right end of the sealing ring body 1 is smaller than the maximum inner diameter of the socket of the spigot-and-socket pipe and larger than the minimum inner diameter of the spigot-and-socket pipe. The outer diameter of the larger head at the left end of the sealing ring body 1 is larger than the maximum inner diameter of the conical section of the spigot-and-socket pipe. The inner diameter of the smaller head at the right end of the sealing ring body 1 is smaller than the outer diameter of the spigot-and-socket pipe.

[0029] The external clockwise left-handed water-blocking ribs 2 and the external counterclockwise right-handed water-blocking ribs 3 on the outer circle of the sealing ring body 1 form a set of external spiral cross-type auxiliary water-blocking structures. Two or more sets can be set on the outer circle of the sealing ring body 1 to form a comprehensive water-blocking grid in surface contact with the inner wall of the socket.

[0030] The inner clockwise left-handed water-blocking ribs 4 and the inner counterclockwise right-handed water-blocking ribs 5 of the inner circle of the sealing ring body 1 form a set of inner spiral cross-type auxiliary water-blocking structures. Two or more sets can be set on the outer circle of the sealing ring body 1 to form a comprehensive water-blocking grid in surface contact with the outer circle of the socket.

[0031] The outer contour of the cross section of the water-blocking rib is an unequal-sided triangle, an inner angle of the unequal-sided triangle is greater than or equal to 90°, preferably 90°, and the inner angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body 1 and the generatrix of the sealing ring body 1. The right side of the unequal-sided triangle is the water-facing surface. This structure enables the long side corresponding to the angle to support the water-facing surface, and has stable and reliable sealing performance.

[0032] The included angle corresponding to the generatrix of the sealing ring body 1 in the scalene triangle is a sharp angle 7, so that the inner clockwise left-handed water-blocking rib 4 and the inner counterclockwise right-handed water-blocking rib 5 can cooperate with the outer circle of the socket to achieve a better water-blocking effect.

[0033] The two sides of the angle corresponding to the generatrix of the sealing ring body 1 in the scalene triangle are arc transition structures 6. In this way, when the pre-installed socket of the present invention is inserted into the socket, the arc transition structure 6 of the outer circle of the clockwise left-handed water-blocking rib 2 and the counterclockwise right-handed water-blocking rib 3 can slide with the inner wall of the socket without being deformed and turned outward due to resistance.

[0034] Since the inner circle of the socket of the socket-and-spigot pipe on the market is all a conical structure with a small outside and a large inside (such as Figure 1 and 2 As shown), there is also a cylindrical structure in the inner circle of the outermost port of the socket (not shown). Therefore, the present invention designs a cylindrical structure in the left end portion of the outer circle of the sealing ring body 1 to match the inner circle of the outer port of the socket of the socket-and-spigot pipe, thereby fully improving the sealing performance.

[0035] Since the innermost circumferential bottom surface of the socket of the spigot-and-socket pipe on the market is either an arc-shaped (not shown in the figure) or a conical surface that is consistent with the conicity of the inner wall of the socket (such as Figure 1 and 2 As shown), therefore, the cross section of the right end portion of the outer circle of the sealing ring body 1 of the present invention is designed to be an arc structure or a sharp angle 7 structure that matches the root of the socket of the socket-type pipe, thereby fully improving the sealing performance.

[0036] The taper of the outer circle of the sealing ring body 1 in the present invention is consistent with the taper of the inner circle of the socket.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Double-sided mesh-fitting cone-shaped rubber sealing ring, characterized by: It includes a sealing ring body whose center line is horizontally arranged in the left and right directions, the outer circle of the sealing ring body is a truncated cone shape with a thick left side and a thin right side, the inner hole of the sealing ring body is a cylindrical hole, the outer circle of the sealing ring body is provided with an outer spiral cross-type auxiliary water-blocking structure, and the inner circle of the sealing ring body is provided with an inner spiral cross-type auxiliary water-blocking structure; The external spiral cross-type auxiliary water-tightening structure includes an external clockwise left-handed water-tightening rib and an external counterclockwise right-handed water-tightening rib that cross each other. The outer contour of the cross section of the external clockwise left-handed water-tightening rib and the external counterclockwise right-handed water-tightening rib is an unequal-sided triangle. An inner angle of the unequal-sided triangle is greater than or equal to 90°. The inner angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body and the generatrix of the sealing ring body. The two sides of the angle corresponding to the generatrix of the sealing ring body in the unequal-sided triangle are arc transition structures. The inner spiral cross-type auxiliary water-sealing structure includes inner clockwise left-handed water-sealing ribs and inner counterclockwise right-handed water-sealing ribs that cross each other. The outer contour of the cross section of the inner clockwise left-handed water-sealing ribs and the inner counterclockwise right-handed water-sealing ribs is an unequal-sided triangle. An inner angle of the unequal-sided triangle is greater than or equal to 90°. The inner angle is the angle formed by an edge adjacent to the thinner end of the sealing ring body and the generatrix of the sealing ring body. The angle corresponding to the generatrix of the sealing ring body in the unequal-sided triangle is a sharp angle. A section of the left end of the outer circle of the sealing ring body is a cylindrical structure matched with the inner circle of the outer port of the socket of the socket-and-spigot pipe; The cross section of the right end portion of the outer circle of the sealing ring body is an arc structure or a sharp angle structure adapted to the innermost circumferential bottom surface of the socket of the socket-and-spigot pipe.

2. The double-sided mesh-fitting frustum-shaped rubber sealing ring according to claim 1, characterized in that: The outer diameter of the smaller head at the right end of the sealing ring body is smaller than the maximum inner diameter of the socket of the socket-and-spigot pipe and larger than the minimum inner diameter of the socket of the socket-and-spigot pipe; the outer diameter of the larger head at the left end of the sealing ring body is larger than or equal to the maximum inner diameter of the tapered section of the socket of the socket-and-spigot pipe; the inner diameter of the smaller head at the right end of the sealing ring body is smaller than the outer diameter of the socket of the socket-and-spigot pipe.

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