Adjustable expansion joint

Abstract

The utility model discloses an adjustable expansion joint which comprises an expansion joint assembly, a middle connecting piece and an end connecting piece, the middle connecting piece is inserted into one end of the expansion joint assembly, the end connecting piece is inserted into one end of the middle connecting piece, and the end connecting piece extends into the expansion joint assembly; the middle connecting piece is connected with the expansion joint assembly through a first connecting rod, and the end connecting piece is connected with the expansion joint assembly through a first connecting rod. According to the expansion joint, the end connecting piece is inserted into the expansion joint assembly, so that the expansion joint assembly is protected, the expansion joint assembly is prevented from being damaged by media transmitted by the expansion joint, and the problem that the expansion joint is prone to being damaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to an adjustable expansion joint. Background Art

[0002] An expansion joint is a flexible structure installed on a container shell or pipeline to compensate for additional stress caused by temperature difference and mechanical vibration. It utilizes the effective expansion and contraction of the working body of the expansion joint to absorb the dimensional changes of pipelines, wires and containers caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacement of pipelines, ducts and containers.

[0003] The existing publication number CN219655553U discloses a synchronous adjustment expansion joint, which belongs to the technical field of expansion joints. The upper connecting flange and the lower connecting flange outer ring are respectively provided with a limit groove and a sliding synchronous groove, and the sliding synchronous groove is covered with a synchronous adjustment ball. The limit groove and the sliding synchronous groove are suspended with a synchronous lifting rod, and the top of the synchronous lifting rod is provided with a limit screw, and the synchronous adjustment ball can be slidably connected in the sliding synchronous groove. The middle upper section of the upper connecting flange is provided with an inner connecting groove, and a positioning screw is installed in the inner connecting groove. The expansion joint body is connected to the operating equipment. After buying two pieces, the synchronous lifting rod can be lifted and slid in the limit groove and the sliding synchronous groove by squeezing the expansion joint body during use. It is connected to the equipment through the inner connecting groove and the positioning screw for easy disassembly, and can be telescopically adjusted according to the operation process.

[0004] Although the prior art realizes the adjustment of the expansion joint's telescopic extension, the single-layer expansion joint body is easily damaged. In order to increase its service life, we propose an adjustable expansion joint. Utility Model Content

[0005] The utility model aims to provide an adjustable expansion joint to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable expansion joint, comprising an expansion joint assembly, a middle connector, and an end connector, wherein the middle connector is inserted into one end of the expansion joint assembly, the end connector is inserted into one end of the middle connector, and the end connector extends into the interior of the expansion joint assembly; the middle connector and the expansion joint assembly are connected by a first connecting rod, and the end connector and the expansion joint assembly are connected by a first connecting rod.

[0007] Preferably, the expansion joint assembly includes a first pipe, a telescopic pipe and a second pipe, the first pipe and the second pipe are connected by the telescopic pipe, a first flange plate is provided at one end of the first pipe away from the telescopic pipe, and a second flange plate is provided at one end of the second pipe away from the telescopic pipe.

[0008] Preferably, the diameter of the first pipe at one end of the first flange plate is smaller than the diameter of the first pipe at one end of the telescopic pipe.

[0009] Preferably, the cross-sectional shape of the middle connecting piece is L-shaped. After the middle connecting piece is inserted into the expansion joint assembly, it is connected to the second flange plate through a first connecting rod. The second pipe is located at the middle connecting piece and a first sealing ring is installed.

[0010] Preferably, the end connector includes a third pipe, one end of the third pipe passes through the middle connector and extends into the end connector, the third pipe is located on the outside of the middle connector and is sequentially provided with a third flange plate and a fourth flange plate, the third flange plate and the second flange plate are connected by a second connecting rod, and the middle connector is provided with a second sealing ring at the end connector.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The end connector is inserted into the expansion joint assembly, thereby protecting the expansion joint assembly and preventing the medium transmitted by the expansion joint from damaging the expansion joint assembly, thus solving the problem of easy damage to the expansion joint; the middle connector can seal the connection between the end connector and the expansion joint assembly, and the middle connector can reduce the large-area fit between the end connector and the expansion joint assembly, thus avoiding mutual friction between the end connector and the expansion joint assembly.

[0013] 2. The second pipeline is provided with a first sealing ring at the middle connector, and the first sealing ring can seal between the middle connector and the expansion joint assembly; the middle connector is provided with a second sealing ring at the end connector, and the second sealing ring seals between the middle connector and the end connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the structure without the second connecting rod;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 This utility model Figure 3Schematic diagram of the structure at A.

[0019] In the figure: 1, expansion joint assembly; 2, middle connecting piece; 3, end connecting piece; 4, first connecting rod; 5, second connecting rod; 6, first sealing ring; 7, second sealing ring; 11, first flange plate; 12, first pipeline; 13, telescopic pipeline; 14, second flange plate; 15, second pipeline; 31, third flange plate; 32, third pipeline; 33, fourth flange plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0021] See also Figure 1-4 In an embodiment of the utility model, an adjustable expansion joint includes an expansion joint assembly 1, a middle connector 2, and an end connector 3, wherein the middle connector 2 is inserted into one end of the expansion joint assembly 1, and the end connector 3 is inserted into one end of the middle connector 2, and the end connector 3 extends into the interior of the expansion joint assembly 1; the middle connector 2 and the expansion joint assembly 1 are connected by a first connecting rod 4, and the end connector 3 and the expansion joint assembly 1 are connected by a first connecting rod 4, and the end connector 3 is inserted into the expansion joint assembly 1, thereby protecting the expansion joint assembly 1 and preventing the medium transmitted by the expansion joint from damaging the expansion joint assembly 1, thereby solving the problem that the expansion joint is easily damaged; the middle connector 2 can seal the connection between the end connector 3 and the expansion joint assembly 1, and the middle connector 2 can reduce the large-area fit between the end connector 3 and the expansion joint assembly 1, and avoid mutual friction between the end connector 3 and the expansion joint assembly 1.

[0022] The expansion joint assembly 1 includes a first pipe 12, a telescopic pipe 13 and a second pipe 15. The first pipe 12 and the second pipe 15 are connected via the telescopic pipe 13. A first flange plate 11 is provided at one end of the first pipe 12 away from the telescopic pipe 13, and a second flange plate 14 is provided at one end of the second pipe 15 away from the telescopic pipe 13. The diameter of the first pipe 12 at the end of the first flange plate 11 is smaller than the diameter of the first pipe 12 at the end of the telescopic pipe 13, mainly to control the diameters at both ends of the expansion joint to be the same.

[0023] The cross-sectional shape of the middle connector 2 is L-shaped. After the middle connector 2 is inserted into the expansion joint assembly 1, it is connected to the second flange plate 14 through the first connecting rod 4. The first connecting rod 4 can adjust the insertion depth of the middle connector 2. The second pipe 15 is located at the middle connector 2 and is installed with a first sealing ring 6. The first sealing ring 6 can seal between the middle connector 2 and the expansion joint assembly 1.

[0024] The end connector 3 includes a third pipe 32, one end of which passes through the middle connector 2 and extends into the end connector 3. The third pipe 32 is located on the outside of the middle connector 2 and is sequentially provided with a third flange plate 31 and a fourth flange plate 33. The third flange plate 31 and the second flange plate 14 are connected by a second connecting rod 5. The second connecting rod 5 is used to adjust the depth of the end connector 3 inserted into the expansion joint assembly 1. The middle connector 2 is located at the end connector 3 and is provided with a second sealing ring 7. The second sealing ring 7 seals between the middle connector 2 and the end connector 3.

[0025] The working principle of the utility model is: the insertion depth of the middle connector 2 can be adjusted by the first connecting rod 4, and the insertion depth of the end connector 3 into the expansion joint assembly 1 can be adjusted by the second connecting rod 5; the end connector 3 is inserted into the expansion joint assembly 1, thereby protecting the expansion joint assembly 1, avoiding the medium transmitted by the expansion joint from damaging the expansion joint assembly 1, and solving the problem that the expansion joint is easily damaged; the middle connector 2 can seal the connection between the end connector 3 and the expansion joint assembly 1, and the middle connector 2 can reduce the large-area fitting of the end connector 3 and the expansion joint assembly 1, avoiding mutual friction between the end connector 3 and the expansion joint assembly 1.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An adjustable expansion joint, characterized in that: The invention comprises an expansion joint assembly (1), a middle connecting piece (2), and an end connecting piece (3); the middle connecting piece (2) is inserted into one end of the expansion joint assembly (1), the end connecting piece (3) is inserted into one end of the middle connecting piece (2), and the end connecting piece (3) extends into the interior of the expansion joint assembly (1); the middle connecting piece (2) and the expansion joint assembly (1) are connected via a first connecting rod (4), and the end connecting piece (3) and the expansion joint assembly (1) are connected via a first connecting rod (4).

2. An adjustable expansion joint according to claim 1, characterized in that: The expansion joint assembly (1) comprises a first pipe (12), a telescopic pipe (13) and a second pipe (15); the first pipe (12) and the second pipe (15) are connected via the telescopic pipe (13); a first flange plate (11) is provided at one end of the first pipe (12) away from the telescopic pipe (13); and a second flange plate (14) is provided at one end of the second pipe (15) away from the telescopic pipe (13).

3. An adjustable expansion joint according to claim 2, characterized in that: The diameter of the first pipe (12) at one end of the first flange plate (11) is smaller than the diameter of the first pipe (12) at one end of the telescopic pipe (13).

4. An adjustable expansion joint according to claim 2, characterized in that: The cross-sectional shape of the middle connecting piece (2) is L-shaped. After the middle connecting piece (2) is inserted into the expansion joint assembly (1), it is connected to the second flange plate (14) via a first connecting rod (4). The second pipe (15) is located at the middle connecting piece (2) and is provided with a first sealing ring (6).

5. An adjustable expansion joint according to claim 2, characterized in that: The end connecting piece (3) comprises a third pipe (32), one end of which passes through the middle connecting piece (2) and extends into the end connecting piece (3); the third pipe (32) is located outside the middle connecting piece (2) and is provided with a third flange plate (31) and a fourth flange plate (33) in sequence; the third flange plate (31) and the second flange plate (14) are connected via a second connecting rod (5); and the middle connecting piece (2) is provided with a second sealing ring (7) at the end connecting piece (3).

Images