Bidirectional rotation adjustable connecting device for non-centered pipeline

Abstract

The utility model relates to the technical field of pipeline connection, and solves the problem that the heat preservation thickness around a pipeline in a sleeve is inconsistent due to the fact that the pipeline in the sleeve is possibly not centered. The non-centered pipeline bidirectional rotation adjustable connecting device comprises a connecting sleeve, the two ends of the connecting sleeve are in butt joint with an inner pipe which is arranged in the connecting sleeve and can rotate in the circumferential direction, the inner pipe is wrapped with a middle-arranged piece connected with the connecting sleeve, and the middle-arranged piece comprises an outer pipe; a first fluid channel and a second fluid channel which are different in diameter are formed in the outer pipe, the diameter of the first fluid channel located at the upper end is larger than that of the second fluid channel located at the lower end, the first fluid channel and the second fluid channel are communicated, the inner pipe is internally connected into the first fluid channel, and the connecting sleeve is externally connected outside the second fluid channel. A top connecting cap and a limiting piece arranged at the lower end of the top connecting cap are arranged in the first fluid channel, and the limiting piece comprises a first lantern ring and a second lantern ring which are arranged outside the inner pipe in a sleeving mode.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a bidirectionally rotatable and adjustable connection device for non-centering pipelines. Background Art

[0002] In the mechanical and electrical installation of buildings, drainage, fire protection, and air conditioning water pipes often pass through floors and walls. In order to facilitate the maintenance of pipes, or to prevent the thermal expansion and contraction of pipes from damaging the structure, it is necessary to set up a sleeve, that is, to install double-layer pipes on top of each other. However, during installation, the pipe inside the sleeve may not be centered, that is, the distance between the inner pipe and the outer pipe is not balanced, which affects the appearance of the pipe on the one hand, and the air conditioning pipe and hot water pipe that need to be insulated are not centered on the other hand, which will cause the insulation thickness around the pipe inside the sleeve to be inconsistent. The part with too thin insulation layer will form a cold bridge, and the outer wall of the insulation will condense or even drip, causing safety hazards. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a non-centered pipe bidirectional rotation adjustable connection device, which solves the problem that the pipe inside the casing may not be centered, resulting in inconsistent insulation thickness around the pipe inside the casing.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a non-centering pipeline bidirectional rotation adjustable connection device, comprising a connecting sleeve, the two ends of the connecting sleeve are butt-jointed with an inner tube placed therein and capable of circumferential rotation, and the inner tube is wrapped with a central piece connected to the connecting sleeve;

[0005] The central insert includes an outer tube, on which a fluid channel 1 and a fluid channel 2 of different diameters are provided, the fluid channel 1 at the upper end has a diameter larger than the fluid channel 2 at the lower end, the fluid channel 1 and the fluid channel 2 are connected, the inner tube is internally connected to the fluid channel 1, and the connecting sleeve is externally connected to the outside of the fluid channel 2;

[0006] A top cap and a limiting member arranged at the lower end of the top cap are arranged in the fluid channel 1. The limiting member includes a ring 1 and a ring 2 which are sleeved on the outside of the inner tube. The ring 1 moves with the change of the position of the top cap. The ring 2 is arranged on the bottom wall of the fluid channel 1. A compression spring is arranged between the ring 1 and the ring 2.

[0007] In one embodiment, the connecting sleeve includes a tube body and an alignment ring installed on the tube body, the alignment ring is symmetrically arranged on the tube body, and the connecting ring is connected to the tube body, and the inner diameter of the connecting ring is adapted to the inner diameter of the second fluid channel;

[0008] Alignment grooves are arranged on the opposite end surfaces of the two alignment rings.

[0009] In one embodiment, the top connection cap includes a top plate and a connecting shaft installed under the top plate and extending into the fluid channel 1, and the connecting shaft and the top plate are both provided with through holes with an outer diameter adapted to the inner tube;

[0010] The connecting shaft is convexly provided with an external thread, and the fluid channel 1 is provided with a thread groove.

[0011] In one embodiment, the size of the first collar and the second collar is the same, and the sum of the width of the second collar and the thickness of the inner tube makes up for the diameter difference between the first fluid channel and the second fluid channel.

[0012] In one embodiment, a collar is provided on the pipe opening of the outer pipe, and a convex strip adapted to the alignment groove is convexly provided on the collar.

[0013] In one embodiment, a rubber layer is disposed in the through opening.

[0014] Compared with the prior art, the utility model provides a non-centered pipe bidirectional rotation adjustable connection device, based on the fact that the pipe inside the casing may not be centered during construction, resulting in inconsistent insulation thickness around the pipe inside the casing. It has the following beneficial effects:

[0015] In the technical solution disclosed by the utility model, the inner tube is arranged in the center piece, and the center piece is used to limit the inner tube, so that the inner tube can be centered and rotated in the center piece, while changing the connection angle and direction with other tubes, providing a multi-directional connection environment.

[0016] Through the utility model, fluid channel one and fluid channel two are opened on the outer tube, and the inner diameter difference is set to facilitate the connection between the inner tube and the connecting sleeve. The setting of the connecting sleeve increases the utilization of the scheme in the connection working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a half-section schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the centrally placed component and the connecting sleeve of the utility model.

[0021] In the figure: 1. connecting sleeve; 11. tube body; 12. alignment ring; 13. connecting ring; 2. inner tube; 3. intermediate piece; 31. outer tube; 32. fluid channel 1; 33. fluid channel 2; 34. top cap; 341. top plate; 342. connecting shaft; 35. limiting piece; 351. sleeve ring 1; 352. sleeve ring 2; 353. compression spring; 36. sleeve ring. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] The specific problem addressed by this specific embodiment is that in the mechanical and electrical installation project of a building, drainage, fire protection, and air conditioning water pipes often pass through floors and walls. In order to facilitate the maintenance of the pipeline, or to prevent the thermal expansion and contraction of the pipeline from damaging the structure, a sleeve needs to be set, that is, a double-layer pipeline is superimposed and installed. However, during installation, the pipeline inside the sleeve may not be centered, that is, the center of the two circles do not coincide, that is, the distance between the inner pipe 2 and the outer pipe 31 is uneven, which affects the aesthetics of the pipeline on the one hand, and on the other hand, the air conditioning pipeline and the hot water pipeline that need to be insulated are not centered, which will cause the insulation thickness around the pipeline inside the sleeve to be inconsistent, and the parts where the insulation layer is too thin will form a cold bridge, and the insulation outer wall will condense or even drip, causing safety hazards. Based on the above problems, the inventor has described a solution for a non-centered pipeline bidirectional rotation adjustable connection device, which specifically sets the inner pipe 2 in the center piece 3, and uses the restriction of the center piece 3 on the inner pipe 2 to facilitate the inner pipe 2 to achieve the center rotation in the center piece 3, while changing the connection angle and direction with other pipe fittings, providing a multi-directional connection environment.

[0025] Figure 1-Figure 3 As shown, a non-centered pipe bidirectional rotation adjustable connection device specifically described in the present scheme is provided with a connecting sleeve 1, and the two ends of the connecting sleeve 1 are connected with an inner tube 2 placed therein and capable of circumferential rotation, and the inner tube 2 is wrapped with a center piece 3 connected to the connecting sleeve 1. In this embodiment, the center piece 3 establishes a basis for adjusting the connection angle of the inner tube 2 by wrapping the inner tube 2.

[0026] The center piece 3 includes an outer tube 31, and a fluid channel 1 32 and a fluid channel 2 33 with different diameters are provided on the outer tube 31. The diameter of the fluid channel 1 32 located at the upper end is larger than that of the fluid channel 2 33 located at the lower end. The fluid channel 1 32 and the fluid channel 2 33 are connected. The inner tube 2 is internally connected to the fluid channel 1 32, and the connecting sleeve 1 is externally connected to the outside of the fluid channel 2 33. The outer diameter of the fluid channel 2 33 is smaller than the outer diameter of the fluid channel 1 32, and the outer diameter difference is equal to the thickness of the connecting sleeve 1. Therefore, after the connection is completed, the connection between the connecting sleeve 1 and the outer tube 31 is flush, thereby improving the overall connection degree. The fluid channel 1 32 and the fluid channel 2 33 are provided on the outer tube 31. Through the setting of the inner diameter difference, the connection between the inner tube 2 and the connecting sleeve 1 is facilitated, and the setting of the connecting sleeve 1 is used to increase the utilization of the scheme in the connection working condition.

[0027] A top cap 34 and a stopper 35 disposed at the lower end of the top cap 34 are disposed in the fluid channel 1 32. The stopper 35 includes a collar 1 351 and a collar 2 352 sleeved on the outside of the inner tube 2. The collar 1 351 moves with the position change of the top cap 34. The collar 2 352 is disposed on the bottom wall of the fluid channel 1 32. A compression spring 353 is disposed between the collar 1 351 and the collar 2 352. The collar 1 351 and the collar 2 352 have the same size. The sum of the width of the collar 2 352 and the thickness of the inner tube 2 makes up for the diameter difference between the fluid channel 1 32 and the fluid channel 2 33. The top cap 34 includes a top plate 341 and a connecting shaft 342 installed under the top plate 341 and extending into the fluid channel 1 32. The connecting shaft 342 is provided with an external thread, and a thread groove is provided in the fluid channel 1 32. When the top cap 34 is screwed inward as a whole, the collar 1 351 moves downward under the action force, but in the process of its downward movement, it is still tightly attached to the lower end of the connecting shaft 342, and based on the compressed state of the compression spring 353, the collar 1 351 is also tightly pressed against the bottom wall of the fluid channel 1 32, so that the collar 1 351 and the collar 2 352 always maintain the centering restriction state of the inner tube 2 to avoid the occurrence of dislocation or shaking. The connecting shaft 342 and the top plate 341 are both provided with a through hole with an outer diameter adapted to the inner tube 2. A rubber layer is provided in the through hole to reduce the degree of jumping of the inner tube 2 in the through hole.

[0028] The connecting sleeve 1 includes a tube body 11 and an alignment ring 12 installed on the tube body 11. The alignment ring 12 is symmetrically arranged on the tube body 11. A connecting ring 13 is connected inside the tube body 11. The inner diameter of the connecting ring 13 is adapted to the inner diameter of the fluid channel 33.

[0029] Alignment grooves are provided on the opposite end faces of the two alignment rings 12. A collar 36 is provided on the pipe opening of the outer tube 31, and a convex strip that matches the alignment groove is provided on the collar 36. Therefore, when the two upper and lower symmetrical middle parts 3 are installed in the connecting inner ring, they are installed in place after the alignment grooves and the convex strips are connected. Therefore, the setting of the convex strips and the alignment grooves serves as a reminder of the depth of the outer tube 31 to penetrate into the connecting sleeve 1.

[0030] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-centering pipeline bidirectionally rotatable and adjustable connection device, comprising a connecting sleeve (1), characterized in that: The two ends of the connecting sleeve (1) are butt-jointed with an inner tube (2) placed therein and capable of circumferential rotation, and the inner tube (2) is wrapped with a middle piece (3) connected to the connecting sleeve (1); The central insert (3) comprises an outer tube (31), on which a fluid channel 1 (32) and a fluid channel 2 (33) of different diameters are provided, wherein the diameter of the fluid channel 1 (32) at the upper end is larger than that of the fluid channel 2 (33) at the lower end, the fluid channel 1 (32) and the fluid channel 2 (33) are connected, the inner tube (2) is internally connected to the fluid channel 1 (32), and the connecting sleeve (1) is externally connected to the outside of the fluid channel 2 (33); The fluid channel one (32) is provided with a top-connecting cap (34) and a limiting member (35) arranged at the lower end of the top-connecting cap (34); the limiting member (35) comprises a first ring (351) and a second ring (352) which are sleeved on the outside of the inner tube (2); the first ring (351) moves with the change of the position of the top-connecting cap (34); the second ring (352) is arranged on the bottom wall of the fluid channel one (32); and a compression spring (353) is arranged between the first ring (351) and the second ring (352).

2. A non-centering pipeline bidirectional rotation adjustable connection device according to claim 1, characterized in that: The connecting sleeve (1) comprises a tube body (11) and an alignment ring (12) mounted on the tube body (11); the alignment ring (12) is symmetrically arranged on the tube body (11) in a vertical direction; a connecting ring (13) is connected inside the tube body (11); the inner diameter of the connecting ring (13) is adapted to the inner diameter of the second fluid channel (33); Alignment grooves are provided on the opposite end surfaces of the two alignment rings (12).

3. A non-centering pipeline bidirectional rotation adjustable connection device according to claim 1, characterized in that: The top connection cap (34) comprises a top plate (341) and a connecting shaft (342) installed under the top plate (341) and extending into the fluid channel 1 (32); the connecting shaft (342) and the top plate (341) are both provided with through openings whose outer diameters are adapted to the inner tube (2); The connecting shaft (342) is provided with an external thread, and the fluid channel (32) is provided with a thread groove.

4. A non-centering pipeline bidirectional rotation adjustable connection device according to claim 1, characterized in that: The size of the first collar (351) and the second collar (352) is the same, and the sum of the width of the second collar (352) and the thickness of the inner tube (2) makes up for the diameter difference between the first fluid channel (32) and the second fluid channel (33).

5. The non-centering pipeline bidirectional rotation adjustable connection device according to claim 1, characterized in that: A collar (36) is provided on the pipe opening of the outer pipe (31), and a convex strip matching the alignment groove is convexly provided on the collar (36).

6. A non-centering pipeline bidirectional rotation adjustable connection device according to claim 3, characterized in that: A rubber layer is arranged in the through opening.

Images