Composite pipe clamp joint
By setting a sealing gasket and an outer sealing ring in the clamp joint, and using foaming agent to expand the expansion ring in close contact with the inner wall of the composite tube, the gap problem after the composite tube is connected is solved, and the sealing and airtightness are improved.
Patent Information
- Application Number
- CN202422214240.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-10
AI Technical Summary
Existing composite tube clamp joints are prone to gaps after connection, resulting in insufficient sealing performance.
Set a sealing gasket and an outer sealing ring in the clamp joint, and inject foaming agent into the expansion ring of the outer ring of the cannula to make the expansion ring in close contact with the inner wall of the composite tube to enhance sealing.
It effectively reduces the gaps between the joints and pipe fittings, and improves sealing and airtightness.
Smart Images
Figure CN223120908U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamp joints, and particularly relates to a composite pipe clamp joint. Background Art
[0002] Composite pipes are pipes based on a composite structure of metal and thermoplastic plastics, and are formed by lining with polypropylene, polyethylene or externally welding cross-linked polyethylene and other non-metallic materials. When two sections of composite pipes are connected to each other, a clamp joint is usually used for connection, and the clamp joint realizes the connection in the form of biting two sections of composite pipes. However, after the clamp joint is connected to the pipe fittings, a sealing test and an airtightness test are generally carried out. Because the surface between the clamp joint and the composite pipe is mainly sealed by a sealing gasket, there is a certain probability that there will be a certain amount of gap at the connection position between the pipe fittings and the joint after installation, and the appearance of the gap is mainly due to the insufficient sealing performance of the joint. In combination with the above viewpoints, the personnel in this field have proposed a composite pipe clamp joint solution that can solve the above problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide a technical solution of a composite pipe clamp joint to solve the deficiencies proposed in the background art. In order to solve the disadvantages and defects described in the background art, the content of this technical solution is as follows:
[0004] It includes a clamp member, both the front and rear ends of the clamp member are clamped with connecting pipe fittings, and a composite pipe is sleeved on each of the ends of the connecting pipe fittings that are far away from each other;
[0005] The clamp member includes an upper clamp and a lower clamp whose left ends are hinged to each other, and a sealing gasket placed in the inner cavities of the upper clamp and the lower clamp, and a screw rod is rotatably connected to the right section of the lower clamp;
[0006] The connecting pipe fittings each include a fixing ring clamped in the inner cavities of the upper clamp and the lower clamp, an insertion pipe fixed on one side of the fixing ring that is far away from each other, and an expansion ring wrapped on the upper surface of the outer circle of the insertion pipe and in contact with the inner cavity side wall of the composite pipe;
[0007] Foaming agent is injected into the inner cavity of the expansion ring, and an outer sealing ring that wraps the port of the end of the composite pipe that is close to each other is fixed on the outer surface of the outer circle of the insertion pipe.
[0008] As a preferred solution of the utility model, a convex block is fixed at the left end of both the upper clamp and the lower clamp. The convex block on the upper clamp is inserted into the convex block on the lower clamp, and a pin is penetrated through the inside of the convex block for the upper clamp and the lower clamp to perform circular rotational motion along the pin.
[0009] As a preferred embodiment of the present utility model, sealing grooves are provided on the inner surfaces of the upper and lower retaining rings, the sealing washer is placed at the middle position inside the sealing groove, and the fixing rings are placed at both sides inside the sealing groove.
[0010] As a preferred embodiment of the present utility model, a circular hole is provided at the central position inside the sealing washer, and the end faces of the fixing rings close to each other are in contact with the front and rear surfaces of the sealing washer.
[0011] As a preferred embodiment of the present utility model, fixing blocks are fixed at the right ends of the upper and lower retaining rings. A strip-shaped through hole for the screw rod to penetrate into is provided in the fixing block on the right side of the upper retaining ring. The fixing on the right side of the lower retaining ring is rotatably connected to the bottom end of the screw rod through a rotating shaft, and a nut is screwed on the outer ring section of the screw rod.
[0012] As a preferred embodiment of the present utility model, a circle of silica gel pads are adhesively fixed on the outer ring surfaces of the fixing rings, and the outer surfaces of the silica gel pads are in contact with the inner cavity side walls of the sealing grooves.
[0013] As a preferred embodiment of the present utility model, a circle of grooves are provided on the outer ring surfaces of the insertion pipes inserted into the outer circle of the composite pipe, and the expansion rings are sleeved on the outer ring surfaces of the grooves.
[0014] As a preferred embodiment of the present utility model, an annular chamber is provided inside the expansion ring, and a connecting pipe is fixedly penetrated through the inner parts of the insertion pipes far away from each other. One end of the connecting pipe located inside the insertion pipe penetrates into the inner cavity of the expansion ring, and a rubber screw rod is screwed and fixed in the port of the connecting pipe located outside the insertion pipe.
[0015] As a preferred embodiment of the present utility model, the inner surface of the outer sealing ring is in close contact with the outer ring surface of the composite pipe.
[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:
[0017] In this technical solution, by providing a sealing washer inside the clamp joint to seal the end faces of the fixing rings at both ends of the connecting pipe fittings, and at the same time providing an outer sealing ring on the outer circle of the insertion pipe to achieve the sealing of the gap with the outer surface of the composite pipe. Moreover, by providing an inner-empty expansion ring on the outer circle of the insertion pipe and injecting a foaming agent into the expansion ring, the foaming agent is used to expand the expansion ring from the inside to the outside, so that the expansion ring is in close contact with the inner wall of the composite pipe, strengthening the sealing performance between the joint and the pipe fittings. Description of the Drawings
[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments described in the present utility model. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a schematic diagram after the retro pipe is connected to the clamp joint;
[0020] Figure 2 It is a schematic diagram after the retro pipe is separated from the clamp joint;
[0021] Figure 3 It is a schematic diagram after the clamp joint is disassembled;
[0022] Figure 4 It is a schematic diagram of the clamp member in the middle section of the clamp joint;
[0023] Figure 5 It is a schematic diagram of the connecting pipe fittings at both ends of the clamp joint.
[0024] Explanation of reference numerals:
[0025] 1. Clamp member; 11. Upper clamp; 12. Sealing groove; 13. Axle pin; 14. Lower clamp; 15. Screw; 16. Sealing washer; 2. Composite pipe; 3. Connecting pipe fitting; 31. Fixed ring; 32. Insertion pipe; 33. Groove; 34. Expansion ring; 35. Outer sealing ring; 36. Rubber screw; 37. Connecting pipe. Detailed implementation manners
[0026] In order to make a clearer explanation and illustration of the technical solutions and implementation manners of the present utility model, the following introduces several preferred specific embodiments for implementing the technical solutions of the present utility model.
[0027] The following description is essentially exemplary only and is not intended to limit the present disclosure, application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the implementation manner of the present disclosure, and does not necessarily show the specific dimensions and their ratios of each implementation manner of the present disclosure. In a specific part of a specific drawing, the relevant details or structures of the implementation manner of the present disclosure may be exaggeratedly illustrated. The disclosed contents of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model.
[0028] Embodiment, a preferred technical solution of a composite pipe clamp joint.
[0029] Refer to the attached drawings of the specification; Figure 1 As shown; it includes a clamp member 1, connecting pipe fittings 3 are clamped at both the front and rear ends of the clamp member 1, and a composite pipe 2 is sleeved on each head of the connecting pipe fittings 3 that are far away from each other; Refer to the attached drawings of the specification; Figure 4 As shown; the clamp member 1 includes an upper clamp 11 and a lower clamp 14 whose left ends are hinged to each other, and a sealing gasket 16 placed in the inner cavities of the upper clamp 11 and the lower clamp 14, and a screw rod 15 is rotatably connected to the right section of the lower clamp 14;
[0030] Refer to the attached drawings of the specification; Figure 5 As shown; the connecting pipe fittings 3 each include a fixing ring 31 clamped in the inner cavities of the upper clamp 11 and the lower clamp 14, an insertion pipe 32 fixed on the sides of the fixing ring 31 that are far away from each other, and an expansion ring 34 wrapped around the upper surface of the outer circle of the insertion pipe 32 and in contact with the inner cavity side wall of the composite pipe 2; Foaming agent is injected into the inner cavity of the expansion ring 34, and an outer sealing ring 35 that wraps the port of the end of the composite pipe 2 that are close to each other is fixed on the outer surface of the outer circle of the insertion pipe 32.
[0031] Refer to the attached drawings of the specification; Figure 4 As shown; a convex block is fixed at each left end of the upper clamp 11 and the lower clamp 14, the convex block on the upper clamp 11 is inserted into the convex block on the lower clamp 14, and a shaft pin 13 passes through the inside of the convex block for the upper clamp 11 and the lower clamp 14 to perform circular rotational movement along the shaft pin 13; Sealing grooves 12 are opened on the inner surfaces of the upper clamp 11 and the lower clamp 14, the sealing gasket 16 is placed in the middle position inside the sealing grooves 12, and the fixing ring 31 is placed on both sides inside the sealing grooves 12.
[0032] Refer to the attached drawings of the specification; Figure 4 As shown; a round hole is provided at the central position inside the sealing gasket 16, and the end faces of the fixing ring 31 that are close to each other are in contact with the front and rear surfaces of the sealing gasket 16. Fixing blocks are fixed at the right ends of both the upper clamp 11 and the lower clamp 14. A strip-shaped through hole for the screw rod 15 to penetrate into is opened in the fixing block on the right side of the upper clamp 11. The fixing on the right side of the lower clamp 14 is rotatably connected to the bottom end of the screw rod 15 through a rotating shaft, and a nut is screwed on the outer circle section of the screw rod 15.
[0033] Refer to the attached drawings of the specification; Figure 5As shown in the figure; a silicone gasket is adhesively fixed in a circle on the outer ring surface of the fixed ring 31, and the outer surface of the silicone gasket contacts the inner cavity side wall of the sealing groove 12. A groove 33 is provided in a circle on the outer ring surface of the inner part of the insertion tube 32 inserted into the composite tube 2, and an expansion ring 34 is hoop-mounted on the outer ring surface of the groove 33. An annular chamber is provided inside the expansion ring 34, and a connecting pipe 37 is fixedly penetrated through one side of the insertion tube 32 away from each other. One end of the connecting pipe 37 located inside the insertion tube 32 penetrates into the inner cavity of the expansion ring 34, and a rubber screw 36 is screwed and fixed in the port of the connecting pipe 37 located outside the insertion tube 32; the inner surface of the outer sealing ring 35 is in close contact with the outer ring surface of the composite tube 2.
[0034] According to the above-mentioned preferred technical solution, the working process of this technical solution is described as follows:
[0035] Unscrew the rubber screw 36 and inject the foaming agent into the connecting pipe 37 through a syringe. Along the connecting pipe 37, the foaming agent is injected into the inside of the expansion ring 34. Then, screw the rubber screw 36 tightly to make the foaming agent slowly expand inside the expansion ring 34. Then, quickly insert the insertion tube 32 into the inside of the composite tube 2. After the insertion tube 32 is completely inserted into the inside of the composite tube 2, the ports of the outer sealing ring 35 away from each other contact the end surface of the composite tube 2 to achieve sealing. After placing the fixed ring 31 into the sealing groove 12 inside the upper hoop 11 and the lower hoop 14, the front and rear end surfaces of the fixed ring 31 contact the sealing washer 16. At the same time, pass the screw 15 through the fixed block at the right end of the upper hoop 11 and screw the nut to fasten the upper hoop 11 and the lower hoop 14 to realize the connection between the fixed rings 31.
[0036] Only some exemplary embodiments of the present invention are described in the above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.
Claims
1. A composite pipe clamp joint, comprising a clamp member (1), characterized in that: Both the front and rear ends of the clamp member (1) are clamped with connecting pipe fittings (3), and a composite pipe (2) is sleeved on each end of the connecting pipe fittings (3) that are far away from each other; The clamp member (1) includes an upper clamp (11) and a lower clamp (14) whose left ends are hinged to each other, and a sealing gasket (16) placed in the inner cavities of the upper clamp (11) and the lower clamp (14), and a screw rod (15) is rotatably connected to the right section of the lower clamp (14); The connecting pipe fittings (3) each include a fixing ring (31) clamped in the inner cavities of the upper clamp (11) and the lower clamp (14), an insertion pipe (32) fixed on the sides of the fixing ring (31) that are far away from each other, and an expansion ring (34) wrapped around the upper surface of the outer circle of the insertion pipe (32) and in contact with the inner cavity side wall of the composite pipe (2); A foaming agent is injected into the inner cavity of the expansion ring (34), and an outer sealing ring (35) that wraps the mutually close end ports of the composite pipe (2) is fixed on the outer circle surface of the insertion pipe (32).
2. The composite pipe clamp joint according to claim 1, wherein: A convex block is fixed at the left end of both the upper clamp (11) and the lower clamp (14). The convex block on the upper clamp (11) is inserted into the convex block on the lower clamp (14), and a pin (13) penetrates through the inside of the convex block for the upper clamp (11) and the lower clamp (14) to perform circular rotational movement along the pin (13).
3. The composite pipe clamp joint according to claim 1, characterized in that: Sealing grooves (12) are formed on the inner side surfaces of both the upper clamp (11) and the lower clamp (14). The sealing gasket (16) is placed at the middle position inside the sealing grooves (12), and the fixing rings (31) are placed at both side positions inside the sealing grooves (12).
4. The composite pipe clamp joint according to claim 1, wherein: A round hole is provided at the central position inside the sealing gasket (16), and the mutually close side end faces of the fixing rings (31) are in contact with the front and rear surfaces of the sealing gasket (16).
5. A composite pipe clamp joint according to claim 1, characterized in that: Fixed blocks are fixed at the right ends of both the upper clamp (11) and the lower clamp (14). The fixed block on the right side of the upper clamp (11) is provided with a strip-shaped through hole for the screw rod (15) to penetrate into. The fixed block on the right side of the lower clamp (14) is rotatably connected to the bottom end of the screw rod (15) through a rotating shaft, and a nut is screwed on the outer circle section of the screw rod (15).
6. The composite pipe clamp joint according to claim 1, characterized in that: A silicone gasket is adhesively fixed on the outer circle surface of each fixing ring (31), and the outer surface of the silicone gasket is in contact with the inner cavity side wall of the sealing groove (12).
7. The composite pipe clamp joint according to claim 1, characterized in that: A groove (33) is formed in a circle on the outer circle surface of the insertion pipe (32) inserted into the composite pipe (2), and the expansion ring (34) is clamped on the outer circle surface of the groove (33).
8. A composite pipe clamp joint according to claim 1, characterized in that: An annular chamber is formed inside the expansion ring (34), and a communicating pipe (37) is fixedly penetrated and fixed at one side inside the insertion pipes (32) that are far away from each other. One end of the communicating pipe (37) located inside the insertion pipe (32) penetrates into the inner cavity of the expansion ring (34), and a rubber screw rod (36) is screwed and fixed in the port of the communicating pipe (37) located outside the insertion pipe (32).
9. The composite pipe clamp joint according to claim 1, characterized in that: The inner side surface of the outer sealing ring (35) is in close contact with the outer circle surface of the composite pipe (2).