CN209977496U

CN209977496U - Pipeline connecting structure

Info

Publication number: CN209977496U
Application number: CN201920543219.4U
Authority: CN
Inventors: 刘军华; 方凯; 周俊
Original assignee: Hangzhou Wen Ge Science And Technology Ltd
Current assignee: Hangzhou Wen Ge Science And Technology Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-21
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a pipeline connection structure, include main part, neck bush, outer liner and press the cap. The utility model discloses a device is when using, overlaps the main part in the outside of neck bush, and the crack that forms between the two behind main part and the neck bush cooperation is used for installing tubular product. When the installation, the link of waiting to install tubular product passes in proper order and presses cap and outer liner earlier, and stretches into from the bottom of pressing cap and outer liner, then stretches into the crack with the link of tubular product, fills in the crack with the outer liner afterwards, will press the cap cover in outer liner and main part again, and the bottom of the first arch of main part and pressure cap is blocked from a week to instruments such as accessible calliper at last, compresses tightly calliper hard, through interference fit, makes and presses the cap to compress tightly the outer liner, thereby make the outer liner further fill in the crack, outer liner compresses tightly tubular product with the inner liner jointly, it is general like the sandwich that compresses tightly. A tubular product can be connected to this structure both ends homoenergetic to can get up two pipe connection, simple and convenient, connect closely firmly, prevent to reveal.

Description

Pipeline connecting structure

Technical Field

The utility model relates to a plumbing equipment field, in particular to pipeline connection structure.

Background

In the pipeline installation engineering, in order to facilitate pipeline storage and transportation, the pipeline length is often limited, and only when the pipeline needs to be laid, the corresponding pipeline is connected and installed.

Particularly, in the current society, the air conditioner is an essential refrigeration product in production and life of people, and the pipeline connection is complicated in the installation process of the air conditioner. In the prior art, pipelines are usually connected through welding or screws, and the connection modes have potential safety hazards or are inconvenient to connect and not firm enough.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pipeline connecting structure can solve one or several kinds among the above-mentioned prior art problem.

According to an aspect of the present invention, there is provided a pipe connection structure, including,

the main body is of a hollow annular structure, and a first bulge is arranged outside the main body;

the inner bushing can be sleeved inside the main body, and a crack is arranged between the two ends of the main body and the two ends of the inner bushing;

the outer bushing can be sleeved on the inner bushing, and one end of the outer bushing can extend into the crack; and the combination of (a) and (b),

the pressing cap can be sleeved on the outer side of the main body and the outer lining, and the pressing cap can drive the outer lining to move towards the crack.

The beneficial effects of the utility model are that, when using, with the main part cover in the outside of neck bush, the crack that forms between the two after main part and neck bush cooperation is used for installing tubular product. When the installation, the link of waiting to install tubular product passes in proper order and presses cap and outer liner earlier, and stretches into from the bottom of pressing cap and outer liner, then stretches into the crack with the link of tubular product, fills in the crack with the outer liner afterwards, will press the cap cover in outer liner and main part again, and the bottom of the first arch of main part and pressure cap is blocked from a week to instruments such as accessible calliper at last, compresses tightly calliper hard, through interference fit, makes and presses the cap to compress tightly the outer liner, thereby make the outer liner further fill in the crack, outer liner compresses tightly tubular product with the inner liner jointly, it is general like the sandwich that compresses tightly.

The utility model discloses a tubular product can be connected to device both ends homoenergetic to adopt this device can couple together two root canals way, simple and convenient, connect closely firmly, can also prevent to reveal.

In some embodiments, the first protrusion is an annular "i" shaped structure, and the first i "shaped protrusion has a recess formed therein. The clamping device has the beneficial effects that the tool can be clamped in the notch, the size of the notch can be changed into small size according to actual conditions, so that the requirements of clamping the first protrusion and pressing the cap are met, and the clamping device is more flexible.

In some embodiments, the outer side walls of the two ends of the inner bushing are provided with grooves, and the inner bushing is of a hollow tubular structure. Its beneficial effect is, when constantly filling in the crack in-process with the outer liner, the outer liner constantly presss from both sides tight tubular product, because tubular product generally is the metal material, has the ductility to can make in the tubular product inner wall presses the recess on the neck bush, tightly block tubular product and neck bush together, so that adopt the utility model discloses it is more firm to carry out the pipe connection. In addition, the inner lining sleeve adopts an inward groove instead of an outward bulge, so that the surface of the inner lining sleeve is flat on the whole body, and the inner lining sleeve is convenient to be attached to the inner wall of the pipe. The inner lining is hollow so as to communicate the pipes to be connected at the two ends.

In some embodiments, the groove is in an annular shape coaxial with the inner liner, and the groove is plural. The beneficial effects are that, the processing production of being convenient for, a plurality of recesses can make tubular product and interior bush gomphosis inseparabler more firmly, further prevent to reveal.

In some embodiments, the inner side of the main body is provided with a second inward protrusion, the outer side of the inner bushing is provided with a third protrusion, the third protrusion corresponds to the second protrusion, and two sides of the second protrusion and two sides of the third protrusion are flush with each other to form the bottom surface of the crack. The pipe fitting has the beneficial effects that the second bulge and the third bulge are matched tightly, the bottom surface of the crack is convenient to abut against the end part of the pipe and is used for supporting the end part of the pipe, so that the sealing performance of the contact part of the pipe, the inner bushing and the main body is better.

In some embodiments, the end of the inner liner is provided with a first bevel that gradually reduces the outer diameter of the inner liner as it extends toward the end. The connecting device has the beneficial effects that the first inclined plane is arranged, so that the end part of the inner bushing is gradually reduced, and the end part of the inner bushing is conveniently inserted into a pipe to be connected.

In some embodiments, the outer side of the outer bushing is provided with a second inclined surface, the second inclined surface is annular, the second inclined surface gradually reduces the diameter of the outer side surface from the middle part to the end part of the outer bushing, and the second inclined surface is formed by a plurality of annular surfaces in sequence. The pipe fitting has the beneficial effects that the second inclined plane is arranged to facilitate the insertion of the outer lining into the crack so as to compress the pipe to be connected.

In some embodiments, the end portion of the main body is provided with an inner side surface and a third inclined surface, and the inner side surface forms an included angle α with the cross section of the main body: 90 < alpha <100 DEG and a third chamfer is located at the end of the inner side surface, the third chamfer gradually increasing the inner diameter of the inner side surface as it extends toward the end of the body. The beneficial effects are that the third inclined plane is also in order to make things convenient for to plug in the crack with the outer bush, and the third inclined plane can also cooperate with the second inclined plane, the inserting of the outer bush of being convenient for more. The angle of alpha is set, so that the outer lining sleeve can conveniently advance, and the outer lining sleeve extends into the gradually narrowed crack, so that the pipe can be further clamped, and the pipe is connected more firmly.

In some embodiments, one end of the outer bushing is provided with a first plane, and one end of the press cap is internally provided with a second plane, wherein the first plane is abutted with the second plane. The pressure cap has the beneficial effects that the contact surface of the first plane and the second plane is larger, so that the stress area of the pressure cap and the outer lining is enlarged, the stress of the pressure cap and the outer lining is more uniform and stable, and the pressure cap is convenient to drive the outer lining to move forward.

In some embodiments, the inner side of the mouth of the press cap is provided with a fourth inclined surface, and the fourth inclined surface makes the inner diameter of the press cap gradually become larger when extending to the end of the press cap. The beneficial effects are that, be equipped with the fourth inclined plane and be convenient for overlap the pressure cap cover on the end of outer liner and main part.

Drawings

Fig. 1 is an exploded view of a pipe connection structure according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the pipe connection shown in FIG. 1 in use;

FIG. 3 is a schematic structural view of a main body of the pipe coupling structure shown in FIG. 1;

FIG. 4 is a schematic view of an inner liner of the pipe coupling of FIG. 1;

FIG. 5 is a schematic view of an outer liner of the pipe coupling of FIG. 1;

fig. 6 is a schematic structural view of a press cap of the pipe connection structure shown in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 6 schematically show a pipe connection structure according to an embodiment of the present invention. As shown, the device comprises a main body 1, an inner liner 2, an outer liner 3 and a press cap 4. The main body 1, the inner bushing 2, the outer bushing 3 and the pressing cap 4 are all hollow tubular or annular structures.

As shown in fig. 3, two ends of the main body 1 are symmetrical, and a first protrusion 11 is disposed outside the middle position.

As shown in fig. 4, the inner liner 2 can be sleeved inside the main body 1, and after the inner liner and the main body 1 are sleeved in a matching manner, a gap 5 is left between two ends of the main body 1 and two ends of the inner liner 2 for inserting a pipe 6 to be connected.

As shown in fig. 5, there are two outer sleeves 3, two outer sleeves 3 can be sleeved on both ends of the inner sleeve 2, and one end of the outer sleeve 3 can extend into the gap 5.

As shown in fig. 6, the number of the pressing caps 4 is two corresponding to that of the outer liner 3, the pressing caps 4 can be sleeved on the outer sides of the main body 1 and the outer liner 3, and the pressing caps 4 are mainly used for driving the outer liner 3 to move towards the inside of the crack 5.

As shown in figure 2, when the device of the utility model is used for connecting a pipe 6, the main body 1 is sleeved outside the inner bushing 2, and after the main body 1 is tightly matched with the inner bushing 2, a crack 5 is respectively formed between the two ends for installing the pipe 6. When the pipe fitting is installed, the connecting end of the pipe 6 to be installed sequentially penetrates through the pressing cap 4 and the outer bushing 3, and the connecting end extends into the hole in the bottom end of the pressing cap 4 and the hole in the bottom end of the outer bushing 3. Then the connecting end of the pipe 6 is extended into the crack 5, then the outer lining 3 is plugged into the crack 5, and the pressing cap 4 is sleeved on the outer lining 3 and the main body 1. Finally, the first bulge 11 of the main body 1 and the bottom of the pressing cap 4 can be clamped by tools such as calipers from a circle, the calipers are pressed forcibly, the pressing cap 4 is pressed against the outer bushing 3 through interference fit, the pressing cap 4 moves forward towards the main body 1, the outer bushing 3 can be driven to move forward, and the further plug is arranged in the crack 5. At this time, the outer liner 3 continuously advances into the crack 5, and the outer liner 3 and the inner liner 2 press the tube 6 together, so as to firmly fix the tube 6 as a pressed sandwich.

The utility model discloses a tubular product 6 can be connected to device both ends homoenergetic to adopt this device can couple together two tubular product 6, simple and convenient, connect closely firmly, can also prevent to reveal.

As shown in fig. 3, in order to facilitate the main clamping body 1 and the pressing cap 4 of the tool holder, the first protrusion 11 is in an annular i-shaped structure, and a notch 12 is formed in the middle of the i-shaped first protrusion 11. At this moment, the one end of instrument can block in notch 12, and the bottom of pressing cap 4 is cliied to the other end, and the size of notch 12 can be big or small, and is decided according to actual conditions to satisfy the needs of pressing from both sides tight first arch 11 and pressing cap 4, and "worker" font is convenient to press from both sides to two directions and is got, in order to carry out fixed connection, more nimble to tubular product 6 at both ends.

As shown in fig. 4, the lateral wall at the both ends of interior bush 2 is equipped with recess 21, when constantly filling in outer bush 3 in the crack 5 in-process, outer bush 3 constantly presss from both sides tight tubular product 6, because tubular product 6 generally is the metal material, for example copper, nonrust steel pipe etc. have the ductility to can make 6 inner walls of tubular product take place to warp after being extruded, press into in the recess 21 on the interior bush 2, tightly block tubular product 6 and interior bush 2 together, so that adopt the utility model discloses it is more firm to carry out the pipe connection. In addition, the inner bushing 2 is provided with the inward groove 21 instead of the outward bulge, so that the surface of the inner bushing 2 is kept flat on the whole, the insertion of the pipe 6 is facilitated, and the inner bushing 2 is tightly attached to the inner wall of the pipe 6.

For ease of processing and to make the product more robust, the recess 21 is provided in an annular shape coaxial with the inner hub 2, and the recess 21 is plural. Therefore, the annular shape is convenient for processing and production, and the plurality of grooves 21 can enable the contact surface of the pipe 6 and the inner bushing 2 to be larger, and the embedding is more compact and firm.

The inner bushing 2 is of a hollow tubular structure, and the inner bushing 2 is hollow and can be communicated with pipes 6 to be connected at two ends.

In order to make the main body 1 and the inner bushing 2 fit more closely, the inner side of the main body 1 is provided with an inward second protrusion 13, the outer side of the inner bushing 2 is provided with a third protrusion 22, the third protrusion 22 corresponds to the second protrusion 13, and two sides of the second protrusion 13 and two sides of the third protrusion 22 are flush with each other to form a bottom surface 51 of the crack 5. Like this, the second arch 13 corresponds the cooperation closely with the third arch 22, and main part 1 and interior bush 2 cover are established firmly, and the bottom surface 51 of crack 5 is convenient for with the tip looks butt of tubular product 6 for support tubular product 6 tip, make tubular product 6 and interior bush 2 and main part 1's contact department's leakproofness and fastness better.

In addition, the end portions of the two ends of the inner bush 2 are further provided with first inclined surfaces 23, and the first inclined surfaces 23 gradually reduce the radius of the inner bush 2 when extending to the end portions. Therefore, the first inclined plane 23 is arranged, and the end part of the inner bushing 2 is in a round table shape, so that the end parts of the two ends of the inner bushing 2 are gradually reduced, and the end part of the inner bushing 2 is easily inserted into the pipe 6 to be connected when the pipe 6 is connected.

As shown in fig. 5, in order to facilitate the insertion of the outer liner 3 into the gap 5 and the advancement of the outer liner 3, the outer side of the outer liner 3 is provided with a second inclined surface 31, the second inclined surface 31 is annular, and the second inclined surface 31 gradually reduces the diameter of the outer side surface from the middle to the end of the outer liner 3, so as to facilitate the insertion of the outer liner 3 into the gap 5 to compress the pipes 6 to be connected. The second inclined surface 31 is formed by a plurality of annular surfaces in sequence, and is similar to a step shape, so that the outer lining 3 can be pushed layer by layer to be squeezed into the crack 5 to clamp the pipe 6.

As shown in fig. 3, the inner side of the end of the main body 1 is provided with an inner side surface 14 and a third inclined surface 15, and the included angle α between the inner side surface 14 and the cross section of the main body 1 is: 90 DEG < alpha <100 DEG, the third inclined surface 15 is positioned at the end of the inner side surface 14, and the third inclined surface 15 gradually increases the inner diameter of the inner side surface 14 when extending toward the end of the main body 1. The third inclined surface 15 is also used for facilitating the insertion of the outer bush 3 into the nip 5, and the third inclined surface 15 can also cooperate with the second inclined surface 31 to further facilitate the insertion of the outer bush 3. The angle of alpha is set, so that the outer lining 3 can advance conveniently, and the outer lining 3 extends into the gradually narrowed crack 5, so that the pipe 6 can be further clamped, and the pipe 6 can be connected more firmly.

As shown in fig. 5 and 6, a first flat surface 32 is provided at one end of the outer liner 3, a second flat surface 41 is provided inside one end of the press cap 4, and the first flat surface 32 abuts against the second flat surface 41. Therefore, the contact surface between the first plane 32 and the second plane 41 is large, so that the stress areas of the pressing cap 4 and the outer bushing 3 are enlarged, the stress of the pressing cap 4 and the outer bushing 3 is more uniform and stable, and the pressing cap 4 is convenient to drive the outer bushing 3 to advance.

As shown in fig. 5, in addition, in order to increase the compression resistance of the outer liner 3, the bottom of the outer liner 3 is further provided with a bent portion 33, and when the compression cap 4 drives the outer liner 3 to advance, the bent portion 33 greatly improves the compression resistance of the outer liner.

As shown in fig. 6, a fourth inclined surface 42 is provided inside the mouth of the press cap 4, and the fourth inclined surface 42 gradually increases the inner diameter of the press cap 4 as it extends toward the end of the press cap 4. Thus, the fourth inclined surface 42 is provided to enlarge the mouth of the pressing cap 4, so that the pressing cap 4 can be easily fitted over the end portions of the outer sleeve 3 and the main body 1.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The pipeline connecting structure is characterized by comprising,

the main body (1) is of a hollow annular structure, and a first bulge (11) is arranged outside the main body (1);

the inner bushing (2) can be sleeved inside the main body (1), and a crack (5) is arranged between two ends of the main body (1) and two ends of the inner bushing (2);

the outer bushing (3) can be sleeved on the inner bushing (2), and one end of the outer bushing (3) can extend into the crack (5); and the combination of (a) and (b),

press cap (4), press cap (4) can be located by the cover main part (1) with the outside of outer liner (3), press cap (4) can drive outer liner (3) to crack (5) internal motion.

2. The pipe connection structure according to claim 1, wherein the first protrusion (11) is an annular I-shaped structure, and a notch (12) is formed in the middle of the I-shaped first protrusion (11).

3. The pipe connection according to claim 1, wherein the inner liner (2) is provided with a groove (21) on the outer side wall of both ends, and the inner liner (2) is a hollow tubular structure.

4. The pipe connecting structure according to claim 3, wherein the groove (21) is in an annular shape coaxial with the inner liner (2), and the groove (21) is plural.

5. The pipe connection according to claim 1, wherein the inner side of the main body (1) is provided with a second inward protrusion (13), the outer side of the inner liner (2) is provided with a third protrusion (22), the third protrusion (22) corresponds to the second protrusion (13), and two sides of the second protrusion (13) and two sides of the third protrusion (22) are flush with each other to form a bottom surface (51) of the crack (5).

6. The pipe connection according to claim 1, wherein the end of the inner liner (2) is provided with a first bevel (23), the first bevel (23) gradually reducing the outer diameter of the inner liner (2) as it extends towards the end.

7. The pipe connection structure according to claim 1, wherein a second inclined surface (31) is provided on an outer side of the outer sleeve (3), the second inclined surface (31) is annular, the second inclined surface (31) gradually reduces a diameter of an outer side surface from a middle portion to an end portion of the outer sleeve (3), and the second inclined surface (31) is formed by a plurality of annular surfaces in sequence.

8. The pipe connection according to claim 1, characterized in that the end of the main body (1) is provided inside with an inner side (14) and a third bevel (15), the inner side (14) having an angle α with the cross-section of the main body (1) of: 90 DEG < alpha <100 DEG, the third inclined surface (15) is located at the end of the inner side surface (14), and the third inclined surface (15) gradually increases the inner diameter of the inner side surface (14) when the inner side surface extends to the end of the main body (1).

9. The pipe connection according to claim 1, wherein one end of the outer bushing (3) is provided with a first flat surface (32), and one end of the press cap (4) is internally provided with a second flat surface (41), the first flat surface (32) abutting against the second flat surface (41).

10. The pipe connection according to claim 1, wherein the inner side of the mouth of the press cap (4) is provided with a fourth slope (42), and the fourth slope (42) makes the inner diameter of the press cap (4) gradually larger as it extends toward the end of the press cap (4).