Adapter joint for connecting straight pipe and corrugated pipe

Abstract

The utility model relates to the technical field of adapters, in particular to an adapter for connecting a straight pipe and a corrugated pipe, which comprises a fixing nut, a connecting sleeve I and a clamping piece I, the fixing nut is fixedly connected to the middle of the connecting sleeve I, one end of the connecting sleeve I is provided with the clamping piece I connected with the corrugated pipe, and the other end of the connecting sleeve I is provided with the clamping piece II. A first clamping piece connected with the straight pipe is arranged at one end of the first connecting sleeve, the first clamping piece fixes the first connecting sleeve to the outer side of the corrugated pipe, a second clamping piece connected with the straight pipe is arranged at one end, away from the corrugated pipe, of the first connecting sleeve, and the second clamping piece fixes the first connecting sleeve to the outer side of the straight pipe. The corrugated pipe and the straight pipe opening can be better attached to the sealing ring under the extrusion effect, connection is tight, the sealing effect is good, the two clamping pieces capable of being rapidly installed are arranged at the two ends of the connector, the corrugated pipe and the straight pipe can be better fixed in the connector, and installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of adapter joints, in particular to an adapter joint used for connecting a straight pipe and a corrugated pipe. Background Art

[0002] Adapter joints that connect straight pipes to corrugated pipes are mostly used in gas pipelines, industrial pipeline systems, etc. The pipeline systems in these fields often need to withstand certain pressures, temperature changes and vibrations, so it is necessary to use bellows joints and adapter joints that can adapt to these changes.

[0003] Existing adapters are mostly connected by steel caps, copper card gaskets and sealing gaskets, and the corrugated pipe needs to be corrugated with a corrugator, which is troublesome to install and has unstable sealing performance.

[0004] When the adapter joint connects the straight pipe and the corrugated pipe, due to the flexible characteristics of the corrugated pipe, the sealing performance may be reduced and leakage may occur after long-term use or under the influence of external factors such as vibration and temperature changes. The installation requirements are high to ensure that the connection is tight and well sealed. Improper installation may cause loose connection, leakage or other problems. For this reason, we propose an adapter joint for connecting straight pipes and corrugated pipes. Utility Model Content

[0005] The purpose of the utility model is to provide a transition joint for connecting a straight pipe and a corrugated pipe, so as to solve the problems raised in the above background technology that the sealing performance of the transition joint is reduced due to long-term use or the influence of external factors such as vibration and temperature change, the installation requirements are high, and the installation is inconvenient.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transition joint for connecting a straight pipe with a corrugated pipe, comprising a fixing nut and a connecting sleeve;

[0007] It also includes: a fixing nut fixedly connected to the middle part of the connecting sleeve, one end of the connecting sleeve is provided with a clamping piece connected to the bellows, the clamping piece fixes the connecting sleeve to the outside of the bellows, and the end of the connecting sleeve away from the bellows is provided with a clamping piece connected to the straight pipe, the clamping piece fixes the connecting sleeve to the outside of the straight pipe.

[0008] The clamping member 1 includes a connecting nut 1 and a connecting sleeve 2. A thread 1 is arranged at one end of the connecting sleeve 1 away from the fixing nut. The thread 1 is rotatably connected to the connecting nut 1. One end of the connecting nut 1 is fixedly connected to the connecting sleeve 2. A fixing ring is arranged inside the end of the connecting sleeve 2 away from the connecting nut 1. The fixing ring is a structure for fixing the corrugated pipe.

[0009] A sealing ring 1 is arranged inside one end of the fixing nut connected to the connecting sleeve 1.

[0010] The second clamping member includes a rotating sleeve, a second thread is arranged on the outer side of the other end of the connecting sleeve away from the fixing nut, the connecting sleeve is rotatably connected to the rotating sleeve through the second thread, one end of the rotating sleeve is fixedly connected to the elastic plate, a third thread is arranged on the outer side of the rotating sleeve, the rotating sleeve is rotatably connected to the connecting nut second through the third thread, and the connecting nut second is fixedly connected to the extrusion sleeve.

[0011] A sealing ring 2 is arranged at one end of the fixing nut away from the sealing ring 1.

[0012] Wherein, the sealing ring 1 and the sealing ring 2 are provided with V-shaped grooves.

[0013] Wherein, the fixing ring is an elliptical fixing ring.

[0014] The interior of the extrusion sleeve is an inclined extrusion surface.

[0015] The utility model has at least the following beneficial effects:

[0016] Two sealing rings are arranged inside the connecting sleeve and V-shaped grooves are provided on the sealing rings, so that the corrugated pipe and the straight pipe mouth can better fit the sealing rings under the action of extrusion, so that the connection is tight and the sealing effect is good. Two quickly installed clamping parts are arranged at both ends of the connecting joint, so that the corrugated pipe and the straight pipe can be better fixed inside the joint and it is also easier to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal cutaway structure of the connection joint of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of the middle A area;

[0020] Figure 4 This is a schematic diagram of the elastic plate structure of the utility model;

[0021] In the figure: 1, bellows; 2, straight pipe; 3, fixing nut; 4, connecting nut 2; 5, extrusion sleeve; 6, sealing ring 1; 7, sealing ring 2; 8, connecting nut 1; 9, rotating sleeve; 10, elastic plate; 11, thread 1; 12, thread 2; 13, thread 3; 14, fixing ring; 15, connecting sleeve 1; 16, connecting sleeve 2; 17, clamping piece 1; 18, clamping piece 2; DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 , Embodiment 1

[0024] The utility model provides a technical solution: a transition joint for connecting a straight pipe and a corrugated pipe, comprising a fixing nut 3 and a connecting sleeve 15;

[0025] It also includes: a fixing nut 3 is fixedly connected to the middle part of the connecting sleeve 15, one end of the connecting sleeve 15 is provided with a clamping piece 17 connected to the corrugated pipe 1, the clamping piece 17 fixes the connecting sleeve 15 to the outside of the corrugated pipe 1, and the end of the connecting sleeve 15 away from the corrugated pipe 1 is provided with a clamping piece 2 18 connected to the straight pipe 2, the clamping piece 2 18 fixes the connecting sleeve 15 to the outside of the straight pipe 2.

[0026] When the bellows 1 enters the connecting sleeve 15, the bellows 1 can be fixed by tightening the clamping piece 17 to prevent it from moving easily. Similarly, after the straight pipe 2 enters the connecting sleeve 15, the elastic plate 10 is squeezed by the clamping piece 2 18 to fix the straight pipe 2.

[0027] The clamping member 17 includes a connecting nut 18, a connecting sleeve 2 16, a connecting sleeve 15 having a thread 11 at one end away from the fixing nut 3, the thread 11 being rotatably connected to the connecting nut 18, a connecting sleeve 2 16 being fixedly connected to one end of the connecting nut 8, a fixing ring 14 being arranged inside the connecting sleeve 2 16 at one end away from the connecting nut 18, the fixing ring 14 being a structure for fixing the corrugated pipe 1,

[0028] A sealing ring 6 is arranged inside one end of the fixing nut 3 connected to the connecting sleeve 15.

[0029] When you want to fix the bellows 1, put the bellows 1 into the connecting sleeve, and then screw on the connecting nut 8. The connecting sleeve 16 is fixedly connected to the connecting nut 8. There is a fixing ring 14 inside the connecting sleeve 16. When the connecting nut 8 is screwed onto the connecting sleeve 15, the fixing ring 14 is stuck in the groove of the bellows 1, and the pipe mouth is stuck in the groove of the sealing ring 6 to achieve fixation and sealing.

[0030] The clamping member 18 includes a rotating sleeve 9, a second thread 12 is arranged on the outer side of the other end of the connecting sleeve 15 away from the fixing nut 3, the connecting sleeve 15 is rotatably connected to the rotating sleeve 9 through the second thread 12, one end of the rotating sleeve 9 is fixedly connected to the elastic plate 10, a third thread 13 is arranged on the outer side of the rotating sleeve 9, the rotating sleeve 9 is rotatably connected to the connecting nut 4 through the third thread 13, and the connecting nut 4 is fixedly connected to the extrusion sleeve 5.

[0031] A sealing ring 2 7 is provided at one end of the fixing nut 3 away from the sealing ring 1 6 .

[0032] When fixing the straight pipe 2, put the straight pipe 2 into the connecting sleeve 15, first screw on the rotating sleeve 9 to fix the elastic plate 10 on the connecting sleeve, then screw on the connecting nut 4, and the extrusion sleeve 5 fixedly connected to the connecting nut 4 squeezes the elastic plate 10 to fix the straight pipe 2 inside the connecting sleeve 15, and the pipe mouth is stuck in the groove of the sealing ring 7 to achieve fixation and sealing.

[0033] Embodiment 2

[0034] In the second embodiment, other structures remain unchanged, and the difference from the first embodiment is that:

[0035] The sealing ring 1 6 and the sealing ring 2 7 form a V-shaped groove.

[0036] The V-shaped groove of the sealing ring can make the corrugated pipe 1 and the straight pipe 2 fit more closely inside the sealing ring, so that the sealing effect is better.

[0037] The fixing ring 14 is an elliptical fixing ring 14 .

[0038] The fixing ring 14 is an elliptical fixing ring 14 and its shape is longer, so it can be better stuck in the groove of the corrugated tube 1, so that the fixing effect is better.

[0039] The interior of the extrusion sleeve 5 is a sloped extrusion surface.

[0040] The inside of the extrusion sleeve 5 is set as an inclined surface, which can better and more smoothly extrude the elastic plate 10 without changing the external shape, so that the elastic plate 10 squeezes the straight tube 2 and makes it more stably inserted into the inside of the connecting sleeve 15.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] 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. A transition joint for connecting a straight pipe and a corrugated pipe, comprising: Fixing nut (3), connecting sleeve 1 (15); The invention is characterized in that: the fixing nut (3) is fixedly connected to the middle part of the connecting sleeve (15); one end of the connecting sleeve (15) is provided with a clamping piece (17) connected to the corrugated pipe (1); the clamping piece (17) fixes the connecting sleeve (15) to the outside of the corrugated pipe (1); the end of the connecting sleeve (15) away from the corrugated pipe (1) is provided with a clamping piece (18) connected to the straight pipe (2); the clamping piece (18) fixes the connecting sleeve (15) to the outside of the straight pipe (2).

2. The adapter joint for connecting a straight pipe and a corrugated pipe according to claim 1, characterized in that: The clamping member 1 (17) comprises a connecting nut 1 (8) and a connecting sleeve 2 (16); a thread 1 (11) is provided at one end of the connecting sleeve 1 (15) away from the fixing nut (3); the thread 1 (11) is rotatably connected to the connecting nut 1 (8); one end of the connecting nut 1 (8) is fixedly connected to the connecting sleeve 2 (16); a fixing ring (14) is provided inside the end of the connecting sleeve 2 (16) away from the connecting nut 1 (8); the fixing ring (14) is a structure for fixing the corrugated pipe (1); A sealing ring (6) is disposed inside one end of the fixing nut (3) that is connected to the connecting sleeve (15).

3. The adapter joint for connecting a straight pipe and a corrugated pipe according to claim 2, characterized in that: The second clamping member (18) comprises a rotating sleeve (9), a second thread (12) is arranged on the outer side of the other end of the connecting sleeve (15) away from the fixing nut (3), the first connecting sleeve (15) is rotatably connected to the rotating sleeve (9) through the second thread (12), one end of the rotating sleeve (9) is fixedly connected to the elastic plate (10), a third thread (13) is arranged on the outer side of the rotating sleeve (9), the rotating sleeve (9) is rotatably connected to the second connecting nut (4) through the third thread (13), and the second connecting nut (4) is fixedly connected to the extrusion sleeve (5), A sealing ring 2 (7) is provided at one end of the fixing nut (3) away from the sealing ring 1 (6).

4. The adapter joint for connecting a straight pipe and a corrugated pipe according to claim 3, characterized in that: The sealing ring 1 (6) and the sealing ring 2 (7) are provided with a V-shaped groove.

5. The adapter joint for connecting a straight pipe and a corrugated pipe according to claim 2, characterized in that: The fixing ring (14) is an elliptical fixing ring (14).

6. The adapter joint for connecting a straight pipe and a corrugated pipe according to claim 3, characterized in that: The interior of the extrusion sleeve (5) is a sloped extrusion surface.

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