Leak-proof mute pipe butt joint device

Abstract

The utility model belongs to the technical field of silence pipe butt joint, and particularly relates to a leakproof silence pipe butt joint device which comprises a connecting pipe, a silence pipe body, a retaining adjusting assembly and a sealing ring, a conical blocking ring is integrally arranged in the connecting pipe, an external expansion ring is integrally arranged at one end of the connecting pipe, and a sealing ring is arranged at the other end of the connecting pipe. A matching conical surface is formed on the end face of the mute pipe body, the sealing ring is of a conical structure and is arranged in the connecting pipe in a sleeved mode, the inner conical surface of the sealing ring is matched with the outer conical surface of the blocking ring, the outer conical surface of the sealing ring is attached to the matching conical surface of the mute pipe body, and the retaining adjusting assembly is arranged on an outer expansion ring of the connecting pipe and used for limiting the mute pipe body to be separated from the connecting pipe. According to the utility model, through the retaining adjusting assembly on the silence pipe body, the conical surface tightly abuts against the sealing ring and is tightly pressed on the blocking ring, so that the conical surface of the silence pipe body is sealed, the leakproof effect of the hollow layer of the silence pipe is improved, and the noise reduction performance of the silence pipe body after butt joint is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the mute pipe butt joint, specifically relates to a mute pipe butt joint device of anti -leakage. BACKGROUND

[0002] In modern building water supply and drainage system, mute pipe is widely applied because of its excellent noise reduction performance. This kind of pipeline usually adopts hollow spiral structure design, effectively absorbs and blocks water flow noise through special pipe wall structure. However, this special structure also brings new technical challenges to pipe butt joint. The mute pipe butt joint device commonly seen in the market mainly has the following technical defects:

[0003] Firstly, the traditional butt joint mode only pays attention to the connection of the outer wall of the pipeline, such as the convenient plug-in quick connector structure of Chinese patent application No. 201821693705.6, which mainly relies on the extrusion of the sealing ring and the outer wall of the pipeline to realize the sealing effect, thereby ignoring the sealing requirement of the hollow spiral structure for the mute pipe. This connection mode causes the hollow layer of the pipeline to be interconnected with the internal flow channel, so that the conveying medium may leak through the spiral gap. In actual use, this leakage not only causes water resource waste, but also may cause wall seepage, building structure damage and other serious consequences.

[0004] More worth paying attention to is that the hollow spiral structure of the mute pipe is easy to produce sound bridge effect under the traditional butt joint mode, which causes the noise reduction performance to decrease significantly. This structural defect makes the mute pipe difficult to play its due noise reduction effect in actual use, which seriously affects the user experience.

[0005] In view of the above technical problems, it is urgent to develop a mute pipe butt joint device of anti-leakage. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a mute pipe butt joint device of anti-leakage, which can solve the above technical problems.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] The mute pipe butt joint device of anti-leakage provided by the utility model comprises a connecting pipe, a mute pipe body, a retreat-stopping adjusting assembly and a sealing ring, the connecting pipe is integrally provided with a conical blocking ring, one end of the connecting pipe is integrally provided with an expanding ring, the end face of the mute pipe body is formed with a matching conical surface, the sealing ring is a conical structure and is sleeved in the connecting pipe, the inner conical surface thereof is matched with the outer conical surface of the blocking ring, and the outer conical surface is matched with the matching conical surface of the mute pipe body, the retreat-stopping adjusting assembly is arranged at the expanding ring of the connecting pipe and is used for limiting the mute pipe body from separating from the connecting pipe.

[0009] The retreat-stop adjusting assembly comprises an expanding cylinder, a clamping ring and a rubber ring, the clamping ring is in the form of an open ring and is sleeved on the outer wall of the expanding cylinder, the clamping ring is embedded in the outer expanding ring, the expanding cylinder is limited in the adapter pipe through the clamping ring and is in plug-in cooperation with the adapter pipe, the mute pipe body penetrates the expanding cylinder and the rubber ring in sequence, the rubber ring is fixed in the outer expanding ring after being expanded by the mute pipe and abuts against the inner wall of the adapter pipe.

[0010] One end of the expanding cylinder is provided with an outer taper surface and is sleeved in the adapter pipe, the outer taper surface is located between the rubber ring and the clamping ring and is sleeved on the outer wall of the mute pipe body, and the other end of the expanding cylinder is provided with a limiting ring which abuts against the end portion of the adapter pipe.

[0011] Preferably, the taper small end of the rubber ring is circumferentially and uniformly provided with a plurality of pressing teeth which are tightly pressed between the outer wall of the mute pipe body and the inner wall of the adapter pipe.

[0012] Preferably, expansion joints which are in communication with each other are formed in the expanding cylinder and the outer taper surface and are circumferentially and equally distributed, and the outer side contraction taper surface of the outer taper surface is in plug-in cooperation with the taper outer expanding inner side of the rubber ring.

[0013] Preferably, the axial length of the outer expanding ring is greater than the sum of the axial length of the rubber ring and the axial length of the clamping ring, and the outer expanding depth of the outer expanding ring is 1.1 times the thickness of the clamping ring.

[0014] Preferably, the axial length of the expanding cylinder is twice the axial length of the clamping ring.

[0015] Preferably, the inner diameter of the taper small end of the rubber ring is 0.9 times the inner diameter of the mute pipe body.

[0016] Beneficial effects are:

[0017] 1. The retreat-stop adjusting assembly on the mute pipe body enables the taper surface to tightly press the sealing ring on the blocking ring, thereby realizing the sealing of the taper surface of the mute pipe body, improving the hollow layer leakage prevention effect of the mute pipe, and ensuring the noise reduction performance of the mute pipe body after butt joint.

[0018] 2. The cooperation of the retreat-stop adjusting assembly and the rubber ring can realize the quick plug-in fixing and dismounting adjustment of the mute pipe body. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the front view structural schematic diagram of the utility model;

[0020] Fig. 2 is the explosion state structural schematic diagram of the utility model;

[0021] Fig. 3It is the butt joint pipe section structure schematic diagram of the utility model.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, the adapter pipe; 11, the blocking ring; 12, the outer expansion ring; 2, the muffler pipe body; 21, the matching taper surface; 3, the expansion cylinder; 31, the outer taper surface; 32, the limiting ring; 33, the expansion joint; 4, the clamp ring; 5, the rubber ring; 51, the compression tooth; 6, the sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose and the advantage of the utility model more clearly, the utility model is specifically explained below with examples. It should be understood that the following text is only used to describe one or several specific implementation manners of the utility model, and does not strictly limit the protection scope specifically requested by the utility model.

[0025] As Figs. 1-3 Indicated, a kind of anti-leakage muffler pipe butt joint device, including adapter pipe 1, muffler pipe body 2, stop regulating assembly and sealing ring 6, adapter pipe 1 integrally is provided with conical blocking ring 11, the one end of adapter pipe 1 integrally is provided with outer expansion ring 12, the end face of muffler pipe body 2 is shaped with matching taper surface 21, matching taper surface 21 is shaped with hand-held chamfering device in the end face of muffler pipe body 2 of China patent application No.202122740257.9, sealing ring 6 is conical structure and is set in adapter pipe 1, its inner taper surface and the outer taper surface 31 of blocking ring 11 match, outer taper surface 31 and the matching taper surface 21 of muffler pipe body 2 are attached, stop regulating assembly is set at the outer expansion ring 12 of adapter pipe 1, for limiting muffler pipe body 2 from adapter pipe 1;

[0026] Stop regulating assembly includes expansion cylinder 3, clamp ring 4 and rubber ring 5, clamp ring 4 is open ring structure and is set in the outer wall of expansion cylinder 3, clamp ring 4 is embedded in outer expansion ring 12, expansion cylinder 3 is limited in adapter pipe 1 by clamp ring 4 and is inserted with adapter pipe 1, muffler pipe body 2 is in turn penetrated expansion cylinder 3 and rubber ring 5, rubber ring 5 is fixed in outer expansion ring 12 after being expanded by muffler pipe extrusion, and is abutted on the inner wall of adapter pipe 1;

[0027] Expansion cylinder 3 one end is equipped with outer taper surface 31, and is set in adapter pipe 1, outer taper surface 31 is located between rubber ring 5 and clamp ring 4, and is set on the outer wall of muffler pipe body 2, the outer wall of expansion cylinder 3 other end is equipped with limiting ring 32, and limiting ring 32 is abutted with the end of adapter pipe 1.

[0028] As an optional implementation, the tapered small end of the rubber ring 5 is circumferentially and uniformly distributed with a plurality of compression teeth 51, which are tightly compressed between the outer wall of the muffler body 2 and the inner wall of the adapter pipe 1. In this way, the compression teeth 51 can form a radial compression force on the muffler body 2, effectively limiting the axial sliding of the muffler body 2, and at the same time, the compression teeth 51 can tightly compress the sealing ring 6 on the blocking ring 11 through the taper cooperation, thereby significantly improving the sealing effect of the muffler body 2 at the tapered surface.

[0029] Referring to the drawings Fig. 2 The expansion barrel 3 and the outer taper surface 31 are provided with expansion joints 33 that are in communication with each other, and the expansion joints 33 are arranged in multiple numbers and are circumferentially and uniformly distributed. The outer side contraction taper surface of the outer taper surface 31 is inserted and matched with the tapered expansion inner side of the rubber ring 5. In this way, when the expansion barrel 3 slides along the outer wall of the muffler body 2, the tapered surface of the outer taper surface 31 can generate a radial expansion force on the rubber ring 5, realizing the elastic deformation adjustment of the rubber ring 5, thereby facilitating the removal or installation of the muffler body 2 from the adapter pipe 1.

[0030] Further, the axial length of the outer expansion ring 12 is set to be greater than the sum of the axial length of the rubber ring 5 and the axial length of the clamp ring 4. The axial length of the outer expansion ring 12 is set to be 1.1 times the sum of the axial length of the rubber ring 5 and the axial length of the clamp ring 4. In this way, the assembly fit of the clamp ring 4 and the rubber ring 5 being fitted in the outer expansion ring 12 is improved. The outer expansion depth of the outer expansion ring 12 is set to be 1.1 times the thickness of the clamp ring 4. In this way, the outer expansion ring 12 can form an accurate inner sleeve limiting space for the clamp ring 4, which can not only ensure the installation stability of the clamp ring 4, but also effectively limit the axial movement stroke of the expansion barrel 3.

[0031] Further, the axial length of the expansion barrel 3 is twice the axial length of the clamp ring 4. In this way, when the expansion barrel 3 is pushed and adjusted, it has sufficient axial movement stroke, thereby ensuring that the outer taper surface 31 can fully act on the rubber ring 5, realizing effective expansion adjustment function.

[0032] Further, the inner diameter of the tapered small end of the rubber ring 5 is set to be 0.9 times the inner diameter of the muffler body 2. The rubber ring 5 is made of rubber material with expansion function. In this way, after the rubber ring 5 is expanded and sleeved on the outer wall of the muffler body 2, the sealing effect of the outer wall of the muffler body 2 can be realized.

[0033] The installation steps of the above structure are as follows:

[0034] 1. The expansion barrel 3 is sleeved on the muffler body 2, and then the clamp ring 4 is sleeved on the outer circumference of the expansion barrel 3;

[0035] 2. The rubber ring 5 is sleeved on the outer wall of the muffler body 2 through the tapered expansion, and the rubber ring 5 is slid to abut against the outer taper surface 31 of the expansion barrel 3;

[0036] 3. The sealing ring 6 is sleeved on the taper surface, and the silencer body 2 is pushed to carry the sealing ring 6 into the connecting pipe;

[0037] 4. At this time, the expansion cylinder 3 drives the clamping ring 4 to be clamped into the outer expansion ring 12, and the silencer body 2 is continuously pushed, so that the taper surface pushes the sealing ring 6 to tightly adhere to the blocking ring 11;

[0038] 5. The rubber ring 5 is clamped in the outer expansion ring 12, and the movement is limited, so as to prevent the silencer body 2 from retreating, ensure that the taper surface always presses the sealing ring 6, realize the sealing of the end of the silencer body 2, and improve the anti-leakage performance.

[0039] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model. The standard parts used in the application file can be purchased from the market, and can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming by the skilled person in the art, which belongs to the common knowledge in the art, and the application is mainly used to protect the mechanical device, so the control mode and circuit connection are not explained in detail. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the art without special description and limitation.

Claims

1. A leak-proof, silent pipe connection device, characterized in that: The device includes a connecting tube (1), a silent tube body (2), a backstop adjustment component, and a sealing ring (6). A conical blocking ring (11) is integrally provided inside the connecting tube (1). An outer expansion ring (12) is integrally provided at one end of the connecting tube (1). A mating conical surface (21) is formed on the end face of the silent tube body (2). The sealing ring (6) has a conical structure and is sleeved inside the connecting tube (1). Its inner conical surface matches the outer conical surface (31) of the blocking ring (11). The outer conical surface (31) fits against the mating conical surface (21) of the silent tube body (2). The backstop adjustment component is provided at the outer expansion ring (12) of the connecting tube (1) to restrict the silent tube body (2) from detaching from the connecting tube (1). The anti-reverse adjustment assembly includes an expansion cylinder (3), a clamp ring (4), and a rubber ring (5). The clamp ring (4) is an open ring structure and is sleeved on the outer wall of the expansion cylinder (3). The clamp ring (4) is embedded in the outer expansion ring (12). The expansion cylinder (3) is limited in the connecting pipe (1) by the clamp ring (4) and is inserted into the connecting pipe (1). The silent tube body (2) passes through the expansion cylinder (3) and the rubber ring (5) in sequence. The rubber ring (5) is fixed in the outer expansion ring (12) after being squeezed and expanded by the silent tube, and abuts against the inner wall of the connecting pipe (1). The expanding cylinder (3) has an outer conical surface (31) at one end, which is fitted inside the connecting pipe (1). The outer conical surface (31) is located between the rubber ring (5) and the clamp ring (4), and is fitted on the outer wall of the silent pipe body (2). The outer wall of the other end of the expanding cylinder (3) has a limiting ring (32), which abuts against the end of the connecting pipe (1).

2. The leak-proof silent pipe docking device according to claim 1, characterized in that: The small conical end of the rubber ring (5) is evenly distributed with several clamping teeth (51) in the circumference. The clamping teeth (51) are tightly pressed between the outer wall of the silent tube body (2) and the inner wall of the connecting tube (1).

3. The leak-proof silent pipe docking device according to claim 2, characterized in that: The expansion cylinder (3) and the outer conical surface (31) are provided with interconnected expansion joints (33), and multiple expansion joints (33) are provided, which are evenly distributed around the circumference. The outer concave conical surface of the outer conical surface (31) is inserted into the inner conical expansion of the rubber ring (5).

4. The leak-proof silent pipe docking device according to claim 3, characterized in that: The axial length of the outer expansion ring (12) is set to be greater than the sum of the axial length of the rubber ring (5) and the axial length of the clamp ring (4), and the outer expansion depth of the outer expansion ring (12) is set to 1.1 times the thickness of the clamp ring (4).

5. The leak-proof silent pipe docking device according to claim 4, characterized in that: The axial length of the expanding cylinder (3) is twice the axial length of the clamp ring (4).

6. The leak-proof silent pipe docking device according to claim 5, characterized in that: The inner diameter of the tapered small end of the rubber ring (5) is set to 0.9 times the inner diameter of the silent tube body (2).

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