WO2020211559A1

WO2020211559A1 - Pipeline connection structure

Info

Publication number: WO2020211559A1
Application number: PCT/CN2020/077941
Authority: WO
Inventors: 刘军华; 方凯
Original assignee: 杭州温格科技有限公司
Priority date: 2019-04-19
Filing date: 2020-03-05
Publication date: 2020-10-22
Also published as: DE202020102046U1; CN109915676B; JP3228089U; CN109915676A

Abstract

Disclosed is a pipeline connection structure, comprising a main body (1), an inner bushing (2), an outer bushing (3) and a pressure cap (4). When the device is in use, the main body is sleeved on the outside of the inner bushing, and a crack (5) formed between the main body and the inner bushing is used for installing pipes. During installation, the connecting end of a pipe to be installed passes through the pressure cap and the outer bushing in turn from the bottom ends thereof and extends into the crack; the outer bushing is inserted into the crack; the pressure cap is sleeved on the outer bushing and the main body; a first bulge (11) of the main body and the bottom of the pressure cap are clamped by tools such as a caliper and the caliper is pressed tightly such that the pressure cap tightly compresses the outer bushing by interference fitting and the outer bushing is further inserted into the crack, the outer bushing and the inner bushing together compressing the pipe like a compressed sandwich. Both ends of the structure can be connected to a pipe so that two pipes can be connected, which is simple and convenient; and the connection is tight and firm, which can prevent leakage.

Description

Pipe connection structure

Technical field

The invention relates to the field of pipeline equipment, in particular to a pipeline connection structure.

Background technique

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

Especially in today's society, air conditioners have become an indispensable refrigeration product in people's production and life. During the installation of air conditioners, there are complicated pipe connections. In the prior art, pipes are usually connected by welding or screws, and these connection methods either have safety hazards, or the connection is inconvenient and not strong enough.

Summary of the invention

The present invention provides a pipe connection structure, which can solve one or more of the above-mentioned existing technical problems.

According to one aspect of the present invention, a pipeline connection structure is provided, including:

The main body is a hollow ring structure, and the outside of the main body is provided with a first protrusion;

The inner liner, the inner liner can be sleeved inside the main body, and there are gaps between the two ends of the main body and the two ends of the inner liner;

The outer bushing, the outer bushing can be sleeved on the inner bushing, and one end of the outer bushing can extend into the gap; and,

The pressure cap can be sleeved on the outer side of the main body and the outer bushing, and the pressure cap can drive the outer bushing to move in the gap.

The beneficial effect of the present invention is that, when in use, the main body is sleeved outside the inner sleeve, and the gap formed between the main body and the inner sleeve is used for installing the pipe. During installation, first pass the connecting end of the pipe to be installed through the pressure cap and the outer bushing in turn, and extend from the bottom end of the pressure cap and the outer bushing, and then extend the connecting end of the pipe into the gap, and then insert the outer lining The sleeve is inserted into the gap, and then the compression cap is placed on the outer sleeve and the main body. Finally, the first protrusion of the main body and the bottom of the compression cap can be clamped by tools such as calipers, and the calipers can be pressed tightly through interference fit. The pressing cap presses the outer bushing so that the outer bushing is further inserted into the gap. The outer bushing and the inner bushing press together the pipe, like a pressed sandwich.

Both ends of the device of the present invention can be connected to a pipe, so that the device can be used to connect two pipes, which is simple and convenient, tightly connected, and can prevent leakage.

In some embodiments, the first protrusion has an annular "I"-shaped structure, and a recess is formed in the center of the "I"-shaped first protrusion. The beneficial effect is that the tool can be stuck in the notch, and the size of the notch can be large or small, depending on the actual situation, to meet the needs of clamping the first protrusion and the pressing cap, and is more flexible.

In some embodiments, the outer side walls at both ends of the inner sleeve are provided with grooves, and the inner sleeve has a hollow tubular structure. The beneficial effect is that when the outer bushing is continuously inserted into the gap, the outer bushing continuously clamps the pipe. Because the pipe is generally made of metal and has ductility, the inner wall of the pipe can be pressed into the groove on the inner bushing Inside, the pipe and the inner sleeve are tightly clamped together, so that the pipe connection using the invention is more firm. In addition, the inner liner adopts inward grooves instead of outward protrusions, which is mainly to facilitate the overall flatness of the surface of the inner liner to facilitate the fitting with the inner wall of the pipe. The inner liner is hollow to connect the pipes to be connected at both ends.

In some embodiments, the groove has an annular shape coaxial with the inner sleeve, and there are multiple grooves. The beneficial effect is that, firstly, it is convenient for processing and production, and secondly, the multiple grooves can make the pipe and the inner liner fit more tightly and firmly, and further prevent leakage.

In some embodiments, the inner side of the main body is provided with a second protrusion that faces inward, and the outer side of the inner sleeve is provided with a third protrusion. The third protrusion corresponds to the second protrusion. The bottom surface of the gap is formed flush with both sides of the third protrusion. The beneficial effect is that the second protrusion and the third protrusion are closely matched, and the bottom surface of the gap is convenient for abutting against the end of the pipe, which is used to support the end of the pipe and seal the contact between the pipe and the inner sleeve and the main body. Sex is better.

In some embodiments, the end of the inner liner is provided with a first inclined surface, and the first inclined surface gradually reduces the outer diameter of the inner liner when it extends to the end. The beneficial effect is that the first inclined surface is provided, so that the end of the inner liner is gradually reduced, which facilitates the insertion of the end of the inner liner into the pipe to be connected.

In some embodiments, the outer bushing is provided with a second inclined surface. The second inclined surface has a ring shape. The second inclined surface gradually reduces the diameter of the outer side surface from the middle to the end of the outer bushing. The second inclined surface is a plurality of rings. The shape surface is formed in sequence. The beneficial effect is that the second inclined surface is provided to facilitate the insertion of the outer bushing into the gap to compress the pipes to be connected.

In some embodiments, the inner side of the end of the main body is provided with an inner side surface and a third inclined surface. The cross-sectional angle α between the inner side surface and the main body is: 90°<α<100°, and the third inclined surface is located at the end of the inner side surface. The third inclined surface gradually increases the inner diameter when the inner side extends toward the end of the main body. The beneficial effect is that the third inclined surface is also to facilitate the insertion of the outer bushing into the gap, and the third inclined surface can also be matched with the second inclined surface, which facilitates the insertion of the outer bushing. The angle of α is set to facilitate the advancement of the outer bushing, and secondly, the outer bushing extends into the gradually narrowing gap, which can further clamp the pipe and make the pipe connection more firm.

In some embodiments, one end of the outer sleeve is provided with a first plane, and one end of the pressure cap is provided with a second plane inside, and the first plane abuts the second plane. The beneficial effect is that the contact surface between the first plane and the second plane is larger, thereby increasing the force area of the pressing cap and the outer bushing, making the force of the two more uniform and stable, and facilitating the pressing cap to drive the outer bushing forward .

In some embodiments, the inner side of the mouth of the pressure cap is provided with a fourth inclined surface, and the fourth inclined surface makes the inner radial direction of the pressure cap gradually increase when the end of the pressure cap extends. The beneficial effect is that the fourth inclined surface is provided to facilitate setting the pressure cap on the outer bushing and the end of the main body.

Description of the drawings

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

Figure 2 is a cross-sectional view of the pipe connection structure shown in Figure 1 when in use;

Fig. 3 is a schematic structural diagram of the main body of the pipe connection structure shown in Fig. 1;

Figure 4 is a schematic structural diagram of the inner liner of the pipe connection structure shown in Figure 1;

Fig. 5 is a structural schematic diagram of the outer bushing of the pipe connection structure shown in Fig. 1;

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

detailed description

The present invention will be further described in detail below in conjunction with the drawings.

Figures 1 to 6 schematically show a pipe connection structure according to an embodiment of the present invention. As shown in the figure, the device includes a main body 1, an inner bushing 2, an outer bushing 3 and a pressing cap 4. The main body 1, the inner bushing 2, the outer bushing 3 and the pressure cap 4 are all hollow tubular or ring structures.

Among them, as shown in FIG. 3, the two ends of the main body 1 have a symmetrical structure, and the outer side of the middle position is provided with a first protrusion 11.

As shown in Figure 4, the inner sleeve 2 can be sleeved inside the main body 1. After the two are matched and sleeved, there are gaps 5 between the two ends of the main body 1 and the inner sleeve 2 for insertion. Connected pipe 6.

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

As shown in Figure 6, there are also two pressure caps 4 corresponding to the outer bushing 3. The pressure cap 4 can be sleeved on the outside of the main body 1 and the outer bushing 3. The pressure cap 4 is mainly used to drive the outer bushing 3 to the gap 5 Inner movement.

As shown in Figure 2, when the device of the present invention is used to connect the pipe 6, the main body 1 is sleeved on the outside of the inner sleeve 2. After the main body 1 and the inner sleeve 2 are closely fitted, one is formed between the two ends. The gap 5 is used to install the pipe 6. During installation, the connecting end of the pipe 6 to be installed is passed through the pressure cap 4 and the outer bushing 3 in turn, and the connecting end extends from the pressure cap 4 and the bottom hole of the outer bushing 3. Then, the connecting end of the pipe 6 is extended into the gap 5, and then the outer sleeve 3 is inserted into the gap 5, and then the pressure cap 4 is sleeved on the outer sleeve 3 and the main body 1. Finally, the first protrusion 11 of the main body 1 and the bottom of the pressure cap 4 can be clamped by a tool such as a caliper, and the caliper can be pressed firmly. Through interference fit, the pressure cap 4 can press the outer bushing 3, thereby the pressure cap 4 Moving in the direction of the main body 1 can drive the outer bushing 3 to move forward, and further into the gap 5. At this time, the outer bushing 3 continuously advances into the gap 5, and the outer bushing 3 and the inner bushing 2 press the pipe 6 together, like a pressed sandwich, firmly fixing the pipe 6.

Both ends of the device of the present invention can be connected to one pipe 6, so that the device can be used to connect two pipes 6, which is simple and convenient, tightly connected, and can prevent leakage.

As shown in FIG. 3, in order to facilitate the clamping of the main body 1 and the pressing cap 4 by the tool holder, the first protrusion 11 has an annular "I"-shaped structure, and a recess 12 is formed in the center of the "I"-shaped first protrusion 11. At this time, one end of the tool can be clamped in the recess 12, and the other end can clamp the bottom of the pressing cap 4. The size of the recess 12 can be large or small, depending on the actual situation, so as to clamp the first protrusion 11 and The pressure cap 4 is required, and the "I" shape is convenient for clamping in two directions, so that the pipes 6 at both ends can be fixedly connected, which is more flexible.

As shown in Figure 4, the outer side walls at both ends of the inner bushing 2 are provided with grooves 21. When the outer bushing 3 is continuously stuffed into the gap 5, the outer bushing 3 continuously clamps the pipe 6, because the pipe 6 is generally Metal materials, such as copper and stainless steel pipes, are malleable, so that the inner wall of the pipe 6 can be deformed after being squeezed and pressed into the groove 21 on the inner sleeve 2 to tighten the pipe 6 and the inner sleeve 2 They are snapped together to make the pipe connection with the invention stronger. In addition, the inner liner 2 adopts an inward groove 21 instead of an outward protrusion, which is mainly to facilitate the overall surface of the inner liner 2 to remain flat, which facilitates the insertion of the pipe 6 and facilitates the connection of the inner liner 2 The inner wall of the pipe 6 is closely attached.

In order to facilitate processing and make the product stronger, the groove 21 is arranged in a ring shape coaxial with the inner sleeve 2, and there are multiple grooves 21. Therefore, firstly, the ring shape is convenient for processing and production, and secondly, the multiple grooves 21 can make the contact surface of the pipe 6 and the inner liner 2 larger, and the fitting is tighter and firmer.

The inner sleeve 2 has a hollow tubular structure, and the inner sleeve 2 is set to be hollow and can communicate with the pipes 6 to be connected at both ends.

In order to make the main body 1 and the inner liner 2 fit more closely, the inner side of the main body 1 is provided with an inwardly directed second protrusion 13, and the outer side of the inner sleeve 2 is provided with a third protrusion 22, the third protrusion 22 and the second The protrusions 13 correspond to each other, and the two sides of the second protrusion 13 and the two sides of the third protrusion 22 are flush to form the bottom surface 51 of the gap 5. In this way, the second protrusion 13 and the third protrusion 22 are closely matched, the main body 1 and the inner sleeve 2 are sleeved firmly, and the bottom surface 51 of the gap 5 is convenient for abutting against the end of the pipe 6 for supporting the end of the pipe 6 , So that the sealing and firmness of the contact between the pipe 6 and the inner liner 2 and the main body 1 are better.

In addition, the end portions of the two ends of the inner liner 2 are also provided with a first inclined surface 23, and the first inclined surface 23 gradually reduces the radius of the inner liner 2 when it extends to the end portion. As a result, the first inclined surface 23 is provided, and the end of the inner sleeve 2 is in the shape of a truncated cone, so that the ends of the inner sleeve 2 are gradually reduced, which is convenient when the pipe 6 is connected. The part is easily inserted into the pipe 6 to be connected.

As shown in Figure 5, in order to facilitate the insertion of the outer sleeve 3 into the gap 5 and facilitate advancement, a second inclined surface 31 is provided on the outer side of the outer sleeve 3. The second inclined surface 31 is annular, and the second inclined surface 31 makes the outer sleeve 3 The diameter of the outer side surface from the middle part to the end part gradually becomes smaller, so that it is convenient to insert the outer sleeve 3 into the gap 5 to compress the pipe 6 to be connected. The second inclined surface 31 is composed of a plurality of annular surfaces in sequence, which is similar to a stepped shape, so that the outer sleeve 3 can be advanced layer by layer and squeeze into the gap 5 to clamp the pipe 6.

As shown in Figure 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. The angle α between the inner side surface 14 and the cross section of the main body 1 is: 90°<α<100°, and the third inclined surface 15 is located At the end of the inner surface 14, the third inclined surface 15 gradually increases the inner diameter of the inner surface 14 when it extends to the end of the main body 1. The third inclined surface 15 is also used to facilitate the insertion of the outer bushing 3 into the gap 5, and the third inclined surface 15 can also be matched with the second inclined surface 31 to facilitate the insertion of the outer bushing 3. The angle setting of α facilitates the advancement of the outer sleeve 3, and secondly, the outer sleeve 3 extends into the gradually narrowing gap 5, which can further clamp the pipe 6 and make the connection of the pipe 6 stronger.

As shown in FIGS. 5 and 6, one end of the outer sleeve 3 is provided with a first flat surface 32, and one end of the pressing cap 4 is provided with a second flat surface 41 inside, and the first flat surface 32 abuts the second flat surface 41. As a result, the contact surface between the first plane 32 and the second plane 41 can be made larger, thereby increasing the force-receiving area of the pressing cap 4 and the outer bushing 3, making the two forces more uniform and stable, and facilitating the pressing cap 4 to drive Advance of outer bushing 3.

As shown in Figure 5, in order to increase the compression resistance of the outer bushing 3, the bottom of the outer bushing 3 is also provided with a bent portion 33. When the pressing cap 4 drives the outer bushing 3 forward, the bent portion 33 is greatly improved The compressive elasticity of the outer bushing.

As shown in FIG. 6, the inner side of the mouth of the pressing cap 4 is provided with a fourth inclined surface 42, and the fourth inclined surface 42 makes the inner radial direction of the pressing cap 4 gradually increase when the end of the pressing cap 4 extends. Therefore, the fourth inclined surface 42 is provided to enlarge the mouth of the pressure cap 4, which facilitates the fitting of the pressure cap 4 on the end of the outer sleeve 3 and the main body 1.

What has been described above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.

Claims

The pipe connection structure is characterized in that it includes:

The main body (1) is a hollow ring structure, and the outside of the main body (1) is provided with a first protrusion (11);

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

An outer sleeve (3), the outer sleeve (3) can be sleeved on the inner sleeve (2), and one end of the outer sleeve (3) can extend into the gap (5); with,

The pressure cap (4), the pressure cap (4) can be sleeved on the outer side of the main body (1) and the outer bushing (3), and the pressure cap (4) can drive the outer bushing ( 3) Move into the gap (5).
The pipe connection structure according to claim 1, wherein the first protrusion (11) is a ring-shaped "I"-shaped structure, and the "I"-shaped first protrusion (11) is formed with a recess in the middle. Mouth (12).
The pipe connection structure according to claim 1, wherein the outer side walls at both ends of the inner bushing (2) are provided with grooves (21), and the inner bushing (2) is a hollow tubular structure.
The pipe connection structure according to claim 3, characterized in that the groove (21) has a ring shape coaxial with the inner bush (2), and there are multiple grooves (21).
The pipe connection structure according to claim 1, wherein the inner side of the main body (1) is provided with a second inward protrusion (13), and the outer side of the inner bush (2) is provided with a third A protrusion (22), the third protrusion (22) corresponds to the second protrusion (13), and both sides of the second protrusion (13) and the third protrusion (22) The bottom surface (51) of the gap (5) is formed flush with the two sides of the same.
The pipe connection structure according to claim 1, wherein the end of the inner bushing (2) is provided with a first inclined surface (23), and the first inclined surface (23) makes the inner bushing (2) When extending to the end, the outer diameter gradually decreases.
The pipe connection structure according to claim 1, wherein a second inclined surface (31) is provided on the outer side of the outer bushing (3), the second inclined surface (31) is annular, and the second inclined surface (31) The diameter of the outer side surface from the middle to the end of the outer bushing (3) is gradually reduced, and the second inclined surface (31) is formed by a plurality of annular surfaces in sequence.
The pipe connection structure according to claim 1, characterized in that, an inner side surface (14) and a third inclined surface (15) are provided on the inner side of the end of the main body (1), and the inner side surface (14) and the The included angle α of the cross section of the main body (1) is 90°<α<100°, the third inclined surface (15) is located at the end of the inner side surface (14), and the third inclined surface (15) makes the When the inner surface (14) extends to the end of the main body (1), the inner diameter gradually increases.
The pipe connection structure according to claim 1, wherein one end of the outer bushing (3) is provided with a first plane (32), and one end of the pressure cap (4) is provided with a second plane ( 41), the first plane (32) abuts against the second plane (41).
The pipe connection structure according to claim 1, characterized in that, the inner side of the mouth of the pressure cap (4) is provided with a fourth inclined surface (42), and the fourth inclined surface (42) makes the pressure cap (4) The inner radial pressure cap (4) of) gradually becomes larger as the end extends.