Special elbow connecting piece for double-wall corrugated pipe

Abstract

The utility model discloses a special elbow connecting piece for a double-wall corrugated pipe, which relates to the technical field of corrugated pipes and comprises a corrugated pipe body and a connecting pipe, and one end of the corrugated pipe body is fixedly connected with a mounting pipe. According to the double-wall corrugated pipe, through the matched arrangement of the connecting assembly and the connecting pipe, when the double-wall corrugated pipe needs a connecting piece for turning connection, the mounting pipe can be inserted into the limiting pipe along the sliding groove firstly, the sealing performance of the mounting pipe can be improved through the matched use of the rubber sealing ring and the rubber sealing gasket, and then the fixing sleeve is rotated; the positioning block is limited and fixed by the fixing sleeve, and finally, the fixing sleeve is fixedly connected with the mounting pipe by using the fixing bolt, so that the double-wall corrugated pipe is conveniently connected; and meanwhile, due to the fact that the fixing sleeve can limit and fix the positioning block, the mounting pipe can be firmly locked in the limiting pipe, and the connecting stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bellows, especially to a special elbow connecting piece for double-wall corrugated pipes. BACKGROUND

[0002] The double-wall corrugated pipe is a new type of light pipe made of high-density polyethylene, which has the characteristics of light weight, high pressure resistance, good toughness, fast construction, long service life, etc. The excellent pipe wall structure design greatly reduces the cost compared with other pipe structures. And because of the convenience and reliability of connection, it can replace a large number of concrete pipes and cast iron pipes, and is widely used in water conservancy projects, municipal engineering, construction engineering, communication engineering, etc.

[0003] The patent with the patent name of "Special elbow connecting piece for double-wall corrugated pipe" (patent application number: 201820178313.X) discloses a special elbow connecting piece for double-wall corrugated pipe, which comprises a first connecting end and a second connecting end. A connecting pipe is arranged between the first connecting end and the second connecting end. The connecting pipe is a circular arc right angle structure. The connecting pipe has the same inner diameter as the double-wall corrugated pipe to be connected. The first connecting end and the second connecting end are fixedly connected to the double-wall corrugated pipe to be connected through a clamping structure. The utility model has the advantages of simple structure, convenient installation and disassembly, environmental protection, etc. When the double-wall corrugated pipe needs to be bent, the special elbow connecting piece for double-wall corrugated pipe of the utility model is used to realize the bending, which avoids the safety hazards of pipe damage due to the limitation of pipe bending radius, which may exceed the bending radius of the corrugated pipe, and expands the application range of the double-wall corrugated pipe.

[0004] In the above case, when the double-wall corrugated pipe is connected, only the clamping of the limiting convex ring and the clamping groove is relied on, and then the rubber ring is used to seal the connection. The overall fixing effect is poor. When the double-wall corrugated pipe is subjected to impact or dragging, the limiting convex ring and the clamping groove are easy to separate, which can easily cause air leakage. Therefore, it is necessary to provide a special elbow connecting piece for double-wall corrugated pipe to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a special elbow connecting piece for double-wall corrugated pipe to solve the problem that when the double-wall corrugated pipe is connected, only the clamping of the limiting convex ring and the clamping groove is relied on, and then the rubber ring is used to seal the connection. The overall fixing effect is poor. When the double-wall corrugated pipe is subjected to impact or dragging, the limiting convex ring and the clamping groove are easy to separate, which can easily cause air leakage. Therefore, it is necessary to provide a special elbow connecting piece for double-wall corrugated pipe to solve the above problems.

[0006] To achieve the above object, the utility model provides the following technical scheme: A special elbow connecting piece of double -walled bellows, including bellows body and connecting pipe, one end of bellows body is fixedly connected with installation pipe, the outside fixed connection of installation pipe has the positioning block,

[0007] The outside of the connecting pipe is provided with a connecting assembly, the connecting assembly includes a limiting tube, a rubber sealing gasket, a fixing sleeve and a fixing bolt, the outside of the limiting tube is fixedly connected with the outside of the connecting pipe, and the inside of the limiting tube is fixedly connected with the outside of the rubber sealing gasket, the outside of the limiting tube is threadedly connected with the inside of the fixing sleeve, and the inside of the fixing sleeve is inserted with the inside of the fixing bolt.

[0008] Preferably, the inner wall of the installation pipe is fixedly connected with a rubber sealing ring, and the diameter value of the installation pipe is greater than that of the connecting pipe.

[0009] Preferably, the outside of the limiting tube is provided with a sliding groove, and the positioning block is slidably connected with the sliding groove.

[0010] Preferably, the outside of the fixing bolt is threadedly connected with the inside of the installation pipe.

[0011] Preferably, the diameter value of the installation pipe is smaller than that of the limiting tube.

[0012] The utility model discloses the technical effect and advantage:

[0013] When the double -walled bellows needs the connecting piece to turn and connect, the installation pipe can be inserted into the inside of the limiting tube along the sliding groove first, the sealing performance of the installation pipe can be improved by using the cooperation of the rubber sealing ring and the rubber sealing gasket, then the fixing sleeve is rotated to limit and fix the positioning block, and finally the fixing sleeve and the installation pipe are fixedly connected by the fixing bolt, so that the double -walled bellows is conveniently connected. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the partial sectional view of the special elbow connecting piece of double -walled bellows of the utility model.

[0015] Figure 2 It is the Chinese structure schematic diagram of the utility model.

[0016] Figure 3 It is the A place amplification schematic diagram in the utility model Figure 1

[0017] ​In the figure: 1, bellows body; 2, connecting pipe; 3, mounting pipe; 4, rubber sealing ring; 5, positioning block; 6, limiting pipe; 7, rubber sealing pad; 8, sliding groove; 9, fixing sleeve; 10, fixing bolt. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] The utility model provides a kind of elbow connecting piece special for double-wall corrugated pipe as shown in Figures 1-3 The utility model provides a kind of elbow connecting piece special for double-wall corrugated pipe as shown in

[0020] In addition, the outside of the connecting pipe 2 is provided with a connecting assembly, the connecting assembly includes a limiting pipe 6, a rubber sealing pad 7, a fixing sleeve 9 and a fixing bolt 10, the outside of the limiting pipe 6 is fixedly connected with the outside of the connecting pipe 2, the inside of the limiting pipe 6 is fixedly connected with the outside of the rubber sealing pad 7, the outside of the limiting pipe 6 is threadedly connected with the inside of the fixing sleeve 9, the inside of the fixing sleeve 9 is inserted with the inside of the fixing bolt 10, the outside of the limiting pipe 6 is provided with a sliding groove 8, the positioning block 5 is slidingly connected with the sliding groove 8, the outside of the fixing bolt 10 is threadedly connected with the inside of the mounting pipe 3, and the diameter value of the mounting pipe 3 is smaller than that of the limiting pipe 6. When the double-wall corrugated pipe needs to be connected by the connecting piece, the fixing sleeve 9 can be obliquely inserted into the outside of the mounting pipe 3 through the upper and lower positioning blocks 5 first, then the mounting pipe 3 is inserted into the inside of the limiting pipe 6 along the sliding groove 8, the sealing performance of the mounting pipe 3 can be improved by using the rubber sealing ring 4 and the rubber sealing pad 7 together, then the fixing sleeve 9 is rotated to limit and fix the positioning block 5, and finally the fixing sleeve 9 is fixedly connected with the mounting pipe 3 by the fixing bolt 10, so as to facilitate the connection of the double-wall corrugated pipe. At the same time, the fixing sleeve 9 can limit and fix the positioning block 5, that is, the mounting pipe 3 can be firmly locked in the inside of the limiting pipe 6, so as to avoid the problem that the mounting pipe 3 deviates or loosens when the double-wall corrugated pipe is impacted or pulled, and the stability of the device connection is improved.

[0021] Working principle: when the double-wall corrugated pipe needs to be connected by the connecting piece, first of all, the fixed sleeve 9 is inclined through the upper and lower positioning blocks 5 and inserted into the outside of the installation pipe 3, then the installation pipe 3 is inserted into the inside of the limiting pipe 6 along the sliding groove 8, the cooperation of the rubber sealing ring 4 and the rubber sealing gasket 7 can improve the sealing performance of the installation pipe 3, then the fixed sleeve 9 is rotated to limit and fix the positioning block 5, finally the fixed sleeve 9 and the installation pipe 3 are fixedly connected by the fixed bolt 10, so as to facilitate the connection of the double-wall corrugated pipe; at the same time, the fixed sleeve 9 can limit and fix the positioning block 5, that is, the installation pipe 3 can be firmly locked in the inside of the limiting pipe 6, avoiding the problem that the installation pipe 3 deviates or loosens when the double-wall corrugated pipe is collided or dragged, improving the stability of the device connection.

Claims

1. A special elbow connection for double-wall corrugated pipes, comprising a corrugated pipe body (1) and a connecting pipe (2), characterized in that: One end of the bellows body (1) is fixedly connected with a mounting pipe (3), an outer portion of the mounting pipe (3) is fixedly connected with a positioning block (5); An outer portion of the connecting pipe (2) is provided with a connecting assembly, the connecting assembly comprises a limiting pipe (6), a rubber sealing gasket (7), a fixing sleeve (9) and a fixing bolt (10), an outer portion of the limiting pipe (6) is fixedly connected with an outer portion of the connecting pipe (2), and an inner portion of the limiting pipe (6) is fixedly connected with an outer portion of the rubber sealing gasket (7), the outer portion of the limiting pipe (6) is threadedly connected with an inner portion of the fixing sleeve (9), and the inner portion of the fixing sleeve (9) is inserted with the inner portion of the fixing bolt (10).

2. A special elbow connector for double wall corrugated pipe according to claim 1, characterized in that: An inner wall of the mounting pipe (3) is fixedly connected with a rubber sealing ring (4), and a diameter value of the mounting pipe (3) is greater than a diameter value of the connecting pipe (2).

3. A special elbow connector for double wall corrugated pipe according to claim 1, characterized in that: An outer portion of the limiting pipe (6) is provided with a sliding groove (8), and the positioning block (5) is slidingly connected with the sliding groove (8).

4. A special elbow connector for double wall corrugated pipe according to claim 1, characterized in that: An outer portion of the fixing bolt (10) is threadedly connected with an inner portion of the mounting pipe (3).

5. A special elbow connector for double wall corrugated pipe according to claim 1, characterized in that: The diameter value of the mounting pipe (3) is smaller than the diameter value of the limiting pipe (6).

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