First pipe fitting, second pipe fitting and quick connecting pipe

Abstract

The utility model discloses a first pipe fitting, a second pipe fitting and a quick connecting pipe, the first pipe fitting comprises a first pipe fitting body, the outer wall of the first pipe fitting body is provided with a guide structure, the guide structure is L-shaped, and one side of the guide structure is provided with a clamping groove for limiting; the second pipe fitting comprises a second pipe fitting body, a locking structure is arranged on the outer wall of the second pipe fitting body, a guide hole is formed in the locking structure, a pull rod is connected to the locking structure in a sliding mode, one end of the pull rod extends into the guide hole and is connected with an arranged clamping block, the second pipe fitting further comprises a first spring in a compressed state, and one end of the first spring is connected with the clamping block. The other end of the first spring is connected with the inner wall of the guide hole; the first pipe fitting body and the second pipe fitting body are matched in an inserted mode, one end of the guide structure corresponds to the position of the guide hole, the guide structure extends into the guide hole, and the clamping block is clamped in the clamping groove. According to the utility model, the two pipe fittings can be quickly assembled and disassembled, the connection reliability is high, and the construction period is greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field more particularly, relate to first pipe fitting, second pipe fitting and quick -witted connect pipe. BACKGROUND

[0002] In the field of industrial pipeline system and domestic water supply and drainage, pipeline connection technology is always the key element influencing system reliability and maintenance efficiency. Flange connection mode as the leading pipeline connection, its sealing connection through bolt fastening is reliable, but has inherent defects such as installation time -consuming, needing professional tool, high maintenance cost. Statistical data shows that in typical industrial pipeline maintenance operation, the dismounting time of flange connection accounts for more than 40% of the overall maintenance time.

[0003] With the breakthrough of high polymer material technology, quick connector appears, which adopts elastic buckle or threaded sleeve design, significantly shortens the installation time. Quick connector realizes locking through 45-degree rotation, and shortens the single connection time to within 30 seconds. But this design requires high processing precision, and is easy to produce micro leakage under pressure fluctuation condition, and the sealing performance sharply decreases after repeated dismounting.

[0004] The prior art CN201210255327.4 discloses a plastic pipe connecting structure with good sealing performance and reliability. The plastic pipe connecting structure comprises a first plastic pipe connecting end and a second plastic pipe connecting end, and flanges matched with each other are arranged on the first plastic pipe connecting end and the second plastic pipe connecting end. The first plastic pipe connecting end is provided with a tapered pipe outside the flange, and the end of the second plastic pipe connecting end is a tapered hole matched with the tapered pipe. When connecting the first plastic pipe connecting end and the second plastic pipe connecting end, first, the tapered pipe of the first plastic pipe connecting end is inserted into the tapered hole of the second plastic pipe connecting end, and then the first plastic pipe connecting end and the second plastic pipe connecting end are fastened together by the flanges. Since the tapered pipe and the tapered hole increase the contact area of the first plastic pipe connecting end and the second plastic pipe connecting end, the prior art increases the sealing performance by matching the tapered pipe and the tapered hole, but the flange connection mode makes the installation efficiency low and the maintenance cost high. UTILITY MODEL CONTENTS

[0005] The utility model discloses a first pipe fitting, second pipe fitting and quick -witted connect pipe can realize the quick connection of two pipe fittings, and the installation efficiency is high, the construction period is short, and the maintenance cost is low.

[0006] In order to achieve the above object, the first pipe fitting of the scheme comprises a first pipe fitting body, a guide structure is arranged on the outer wall of the first pipe fitting body, and a clamping groove for limiting is arranged on one side of the guide structure.

[0007] As a preferred scheme, the first pipe body is communicated with a pressure relief valve, which is automatically opened when the internal pressure of the first pipe body is too high, so as to timely release the internal pressure and protect the pipeline.

[0008] To achieve the above-mentioned purpose, the second pipe of the scheme comprises a second pipe body, the outer wall of the second pipe body is provided with a locking structure, the locking structure has a guide hole, a pull rod is slidably connected to the locking structure, one end of the pull rod extends into the guide hole and is connected to a clamping block provided therein, and a first spring in a compressed state is further provided, one end of the first spring is connected to the clamping block, and the other end of the first spring is connected to the inner wall of the guide hole.

[0009] As a preferred scheme, the second pipe body is communicated with a pressure relief valve, which is automatically opened when the internal pressure of the second pipe body is too high, so as to timely release the internal pressure and protect the pipeline.

[0010] To achieve the above-mentioned purpose, the quick connecting pipe of the scheme comprises the first pipe and the second pipe described above, the first pipe body and the second pipe body are inserted and matched, one end of the guide structure corresponds to the position of the guide hole, the guide structure extends into the guide hole, and the clamping block is clamped in the clamping groove.

[0011] In the technical scheme, the guide structure is L-shaped, in use, one end of the first pipe body and the second pipe body is inserted, the pipe opening of the second pipe body is slightly smaller than the pipe opening of the first pipe body, in the process of insertion, one end of the second pipe body is inserted into one end of the first pipe body to limit the radial direction of the first pipe body and the second pipe body, the guide structure is aligned with the guide hole and inserted into the locking structure along the axial direction of the second pipe body, one end of the guide structure is provided with an inclined surface, the inclined surface can make the guide structure enter the guide hole without pulling the pull rod to lift the clamping block, when the clamping block is aligned with the clamping groove, the clamping block can be inserted into the clamping groove, so that the guide structure can extend into or out of the guide hole, then the clamping block is aligned with the clamping groove of the guide structure, the clamping block is inserted into the clamping groove under the tension of the first spring, so as to realize the locking of the guide structure and limit the axial direction of the first pipe body and the second pipe body, when the first pipe body and the second pipe body need to be disassembled, pulling the pull rod outward can compress the first spring and lift the clamping block, so that the first pipe body and the second pipe body can be separated, thereby realizing the quick connection and installation of the pipe.

[0012] As a preferred scheme, in order to increase the reliability of the connection between the first pipe body and the second pipe body, two guide structures are symmetrically arranged on both sides of the axial line of the first pipe body, and two locking structures are symmetrically arranged on both sides of the axial line of the second pipe body.

[0013] As a preferred solution, in order to increase the sealing of the connection between the first pipe body and the second pipe body, one end of the first pipe body is provided with a socket, one end of the second pipe body is provided with an insertion part matched with the socket, the insertion part is inserted into the socket, and a sealing ring is arranged between the socket and the insertion part.

[0014] As a preferred solution, the other end of the first pipe body and / or the second pipe body is detachably provided with a pad, and the pad is further provided with a sealing ring and a fixing ring for fixing the pipe, so that the adaptability of the connection between the first pipe body and the second pipe body is increased, and the pipe with a larger diameter can be connected, and when connected, the pipe with a large diameter is sleeved on the pad, the sealing ring is arranged between the pipe with a large diameter and the pad, and the pipe with a large diameter is clamped by the fixing ring.

[0015] As a preferred solution, the pressure relief valve is a pressure relief pipe connected to the first pipe body or the second pipe body, a side wall of the pressure relief pipe is provided with a pressure relief opening, an end of the pressure relief pipe is blocked by a plug, a telescopic rod is arranged in the pressure relief pipe, a fixed end of the telescopic rod is connected to the plug, a telescopic end of the telescopic rod is connected to a baffle, the baffle is sealingly connected to an inner wall of the pressure relief pipe, the telescopic end of the telescopic rod covers the pressure relief opening in a stroke, a second spring is arranged on the telescopic rod, one end of the second spring is connected to the fixed end of the telescopic rod, the other end of the second spring is connected to the baffle, and the distance between the baffle and the first pipe body or the second pipe body is less than the distance between the pressure relief opening and the first pipe body or the second pipe body, so that the second spring is in a natural or compressed state, with the increase of the internal pressure of the first pipe body and the second pipe body, the fluid extrudes the baffle and continuously compresses the second spring, when the baffle slides to a position passing the pressure relief opening, the pressure relief opening is opened, the high-pressure fluid is discharged from the pressure relief opening, and the internal pressure of the first pipe and the second pipe is released.

[0016] As a preferred solution, in order to prevent foreign matters such as dust, impurities and small insects in the outside world from invading the pressure relief pipe, a dustproof cover is rotationally connected to the pressure relief opening, and a reset member is further arranged at the connection between the dustproof cover and the pressure relief opening, so that the dustproof cover always covers the pressure relief opening under the action of the reset member, and when the pressure relief opening is closed, the dustproof cover is always closed under the action of the reset member, and when the pressure relief opening is opened, the dustproof cover is opened under the impact of the fluid.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] 1. The utility model discloses a first pipe body and second pipe body butt joint realizes radial limit, and then realizes axial limit through guide structure and locking structure to can realize the quick connection of first pipe body and second pipe body, and installation efficiency is high, and the period is short, and maintenance cost is low.

[0019] 2. Through setting relief pipe on first pipe body or second pipe body, can when the internal pressure of first pipe body and second pipe body is too high, automatic pressure relief to protect the safety of pipeline.

[0020] 3. Through setting cushion block and the fixed ring for fixing pipe on one end of first pipe body and second pipe body, can facilitate the installation of larger caliber pipe, increase the adaptability of first pipe body and second pipe body. DRAWINGS

[0021] Figure 1 It is the structure diagram of quick -connect pipe of the utility model;

[0022] Figure 2 It is Figure 1 It is the schematic diagram of another perspective;

[0023] Figure 3 It is the sectional view of quick -connect pipe of the utility model;

[0024] Figure 4 It is Figure 1 It is the local enlarged view of A part in;

[0025] Figure 5 It is Figure 2 It is the local enlarged view of B part in.

[0026] In the drawing: first pipe body 1;Guide structure 11;Inclined plane 111;Clamping groove 112;Socket 12;Second pipe body 2;Locking structure 21;Clamping block 211;Pull rod 212;First spring 213;Insertion part 22;Relief pipe 3;Plug 31;Telescopic rod 32;Baffle 33;Second spring 34;Pressure relief port 35;Reset piece 351;Dust cover 352;Cushion block 4;Fixed ring 41. DETAILED DESCRIPTION

[0027] The drawings are only for example illustration, and can not be understood as the limitation of this patent;In order to better illustrate this embodiment, some components of the drawings can be omitted, enlarged or reduced, and do not represent the size of actual product;For those skilled in the art, it is understandable that some well-known structures in the drawings and their description can be omitted. The position relation described in the drawings is only for example illustration, and can not be understood as the limitation of this patent.

[0028] The same or similar reference signs in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "long", "short" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for ordinary skilled persons in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] The technical scheme of the present utility model will be further specifically described below by means of specific embodiments and in combination with the drawings:

[0030] Embodiment 1:

[0031] As shown in Figures 1-3 , 5, the present embodiment provides a first pipe fitting, which comprises a first pipe fitting body 1, the outer wall of the first pipe fitting body 1 is provided with a guide structure 11, the guide structure 11 is L-shaped, one side of the guide structure 11 is provided with a clamping groove 112 for limiting.

[0032] Specifically, one end of the guide structure 11 is provided with an inclined surface 111.

[0033] Embodiment 2:

[0034] As shown in Figures 1-3 , 5, the present embodiment provides a second pipe fitting, which comprises a second pipe fitting body 2, the outer wall of the second pipe fitting body 2 is provided with a locking structure 21, the locking structure 21 has a guide hole, a pull rod 212 is slidably connected to the locking structure 21, one end of the pull rod 212 extends into the guide hole and is connected to the clamping block 211, and the first spring 213 in the compressed state, one end of the first spring 213 is connected to the clamping block 211, and the other end of the first spring 213 is connected to the inner wall of the guide hole.

[0035] In the present embodiment, the locking structure 21 is a support table, the middle part of the locking structure 21 forms a guide hole arranged along the axial direction of the second pipe fitting body 2, the pull rod 212 is a T-shaped structure, the top of the locking structure 21 is provided with a through hole, one end of the pull rod 212 extends into the guide hole through the through hole, and under the action of the first spring 213, the top of the pull rod 212 abuts against the top of the locking structure 21.

[0036] Embodiment 3:

[0037] As shown in Figures 1-3As shown in FIG. 5, the present embodiment provides a quick connecting pipe, which comprises the first pipe fitting and the second pipe fitting as described above, the first pipe fitting body 1 and the second pipe fitting body 2 are inserted and matched, one end of the guide structure 11 corresponds to the position of the guide hole, the guide structure 11 extends into the guide hole, and under the action of the first spring 213, the clamping block 211 is clamped in the clamping groove 112.

[0038] In the present embodiment, one end of the guide structure 11 corresponds to the position of the guide hole, and the clamping block 211 cooperates with the clamping groove 112.

[0039] In the present embodiment, in the natural state, the length of the pull rod 212 is set so that a certain gap is left between the clamping block 211 and the inner wall of the guide hole, which allows the end of the inclined surface 111 of the guide structure 11 to be inserted.

[0040] Specifically, the guide structure 11 and the locking structure 21 are respectively provided with two, two guide structures 11 are symmetrically provided on both sides of the axis of the first pipe fitting body 1, and two locking structures 21 are symmetrically provided on both sides of the axis of the second pipe fitting body 2.

[0041] In the present embodiment, one end of the first pipe fitting body 1 has a socket 12, one end of the second pipe fitting body 2 has an insertion part 22 matched with the socket 12, the insertion part 22 is inserted into the socket 12, and a sealing ring is arranged between the socket 12 and the insertion part 22.

[0042] Specifically, the other end of the first pipe fitting body 1 and / or the second pipe fitting body 2 is detachably provided with a pad 4, and the pad 4 is further provided with a sealing ring and a fixing ring 41 for fixing the pipe fitting.

[0043] Embodiment 4:

[0044] The present embodiment is similar to Embodiment 3, except that, as shown in FIG. 6, in the present embodiment, the first pipe fitting body 1 or the second pipe fitting body 2 is connected with a pressure relief valve. Figures 1-4

[0045] In the present embodiment, the pressure relief valve is arranged on the second pipe fitting body 2.

[0046] ​Specifically, the pressure relief valve is a pressure relief pipe 3 connected to the second pipe body 2, the pressure relief pipe 3 is arranged perpendicularly to the second pipe body 2, a side wall of the pressure relief pipe 3 is provided with a pressure relief port 35, an end of the pressure relief pipe 3 is plugged by a plug 31, a telescopic rod 32 is arranged in the pressure relief pipe 3, a fixed end of the telescopic rod 32 is connected to the plug 31, a telescopic end of the telescopic rod 32 is connected with a baffle 33, the baffle 33 is sealingly connected to an inner wall of the pressure relief pipe 3, a stroke of the telescopic end of the telescopic rod 32 covers the pressure relief port 35, a second spring 34 is arranged on the telescopic rod 32, one end of the second spring 34 is connected to the fixed end of the telescopic rod 32, the other end of the second spring 34 is connected to the baffle 33, a distance between the baffle 33 and the second pipe body 2 is less than a distance between the pressure relief port 35 and the second pipe body 2.

[0047] Specifically, the pressure relief port 35 is rotationally connected with a dust cover 352, the dust cover 352 and the pressure relief port 35 are further provided with a reset member 351 at a connection position, so as to enable the dust cover 352 to close the pressure relief port 35.

[0048] In the embodiment, the reset member 351 is a torsion spring.

[0049] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

[0050] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For the ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above-mentioned description. Here, it is not necessary and also impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A first pipe element, characterized in that The utility model provides a first pipe body (1) is provided with the guide structure (11) on the outer wall, one side of guide structure (11) is provided with the clamping groove (112) for limiting.

2. The first pipe according to claim 1, wherein The first pipe body (1) is communicated with a pressure relief valve.

3. The second pipe element, characterized in that The utility model provides a second pipe body (2) is provided with the locking structure (21) on the outer wall, locking structure (21) has the guide hole, locking structure (21) is slidably connected with the pull rod (212), one end of pull rod (212) extends into the guide hole and is connected with the clamping block (211) set, further include the first spring (213) in compression state, one end of first spring (213) is connected with clamping block (211), the other end of first spring (213) is connected with the inner wall of guide hole.

4. The second pipe according to claim 3, wherein The second pipe body (2) is communicated with a pressure relief valve.

5. A quick connect tube characterized by, The utility model provides a first pipe body (1) and second pipe body (2) of any one of claims 1-4, first pipe body (1) and second pipe body (2) are inserted and cooperate, one end of guide structure (11) corresponds with the position of guide hole, guide structure (11) extends into guide hole, clamping block (211) is clamped in clamping groove (112).

6. A quick connect tube according to claim 5, wherein, The guide structure (11) and locking structure (21) are respectively provided with two, two guide structures (11) are symmetrically arranged on the both sides of the axis of the first pipe body (1), and two locking structures (21) are symmetrically arranged on the both sides of the axis of the second pipe body (2).

7. A quick connect tube according to claim 5, wherein, One end of the first pipe body (1) has a socket (12), one end of the second pipe body (2) has an insertion part (22) matched with the socket (12), the insertion part (22) is inserted into the socket (12), and a sealing ring is arranged between the socket (12) and the insertion part (22).

8. A quick connect tube according to claim 5, wherein, The other end of the first pipe body (1) and / or the second pipe body (2) is detachably provided with a pad (4), and the pad (4) is further provided with a sealing ring and a fixing ring (41) for fixing the pipe.

9. A quick connect tube according to claim 5, wherein, The pressure relief valve is a pressure relief pipe (3) connected to the first pipe body (1) or the second pipe body (2), a side wall of the pressure relief pipe (3) is provided with a pressure relief port (35), an end of the pressure relief pipe (3) is plugged by a plug (31), a telescopic rod (32) is arranged in the pressure relief pipe (3), a fixed end of the telescopic rod (32) is connected to the plug (31), a telescopic end of the telescopic rod (32) is connected to a baffle (33), the baffle (33) is sealingly connected to an inner wall of the pressure relief pipe (3), a stroke of the telescopic end of the telescopic rod (32) covers the pressure relief port (35), a second spring (34) is arranged on the telescopic rod (32), one end of the second spring (34) is connected to the fixed end of the telescopic rod (32), the other end of the second spring (34) is connected to the baffle (33), a distance between the baffle (33) and the first pipe body (1) or the second pipe body (2) is less than a distance between the pressure relief port (35) and the first pipe body (1) or the second pipe body (2).

10. A quick connect tube according to claim 9, wherein, The pressure relief port (35) is rotationally connected to a dust cover (352), a connection between the dust cover (352) and the pressure relief port (35) is further provided with a reset member (351) for closing the pressure relief port (35) by the dust cover (352).

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