Metal bellow expansion joint capable of being rapidly installed

Abstract

The utility model relates to the technical field of metal bellow expansion joints, and discloses a metal bellow expansion joint capable of being quickly installed, which solves the problem that the metal bellow expansion joint is inconvenient to be quickly installed with an external pipeline at present, and comprises a corrugated pipe, outer discs are fixedly mounted on the outer sides of the two connecting pipes, two limiting rods are symmetrically mounted between the two outer discs, an outer pipeline is arranged on the outer side of the corrugated pipe, the outer pipeline is arranged in the connecting pipes in a sleeving manner, a mounting mechanism is mounted between the outer pipeline and the connecting pipes, and a fixing mechanism is mounted on the mounting mechanism; according to the utility model, the outer ring is conveniently connected with the outer disc through the matching among the positioning rod, the positioning hole and the positioning plate, and the two inserting rods are conveniently inserted into the two inserting holes respectively to fix the outer ring and the outer disc through the matching among the sliding plate, the U-shaped round rod and the spring, so that the corrugated pipe is conveniently and quickly mounted.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal bellows expansion joints, in particular to a metal bellows expansion joint which can be quickly installed. Background Art

[0002] Metal bellows expansion joint, also known as compensator, consists of a bellows and a telescopic joint. The bellows is its core component. The deformation of the bellows is used to absorb or release the strain of the pipeline. Metal bellows expansion joint is mainly used to compensate for the additional stress caused by temperature difference and mechanical vibration in the pipeline, and to protect the normal and safe operation of the pipeline. It is particularly suitable for pipelines with large deformation and limited spatial position, large-diameter pipelines, equipment that needs to limit the load of the pipe, and pipelines that need to absorb or isolate high-frequency mechanical vibrations.

[0003] When installing the existing metal bellows expansion joint, a large number of bolts and nuts are required to connect the flange at one end of the expansion joint and the external pipe, so multiple operations are required, resulting in a large amount of time, which is not convenient for the rapid installation of the expansion joint. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a metal bellows expansion joint that can be quickly installed, which effectively solves the current problem of inconvenience in quickly installing the metal bellows expansion joint and the external pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal corrugated expansion joint that can be quickly installed, comprising a bellows, both ends of the bellows are fixedly installed with connecting pipes, the outer sides of the two connecting pipes are fixedly installed with outer discs, two limit rods are symmetrically installed between the two outer discs, the outer side of the bellows is provided with an outer pipe, the outer pipe is sleeved inside the connecting pipe, an installation mechanism is installed between the outer pipe and the connecting pipe, and a fixing mechanism is installed on the installation mechanism;

[0006] The mounting mechanism includes a slide plate located at the outside of the connecting pipe, an outer ring is fixedly installed on the outside of the outer pipe, two positioning plates are symmetrically fixedly installed on the side of the outer ring close to the outer disk, the two positioning plates both penetrate the outer disk, and two side frames are symmetrically fixedly installed on the side of the outer disk away from the outer ring, the two side frames are respectively sleeved on the outside of the two positioning plates, a U-shaped round rod is fixedly connected between the tops of the two side frames, the slide plate is movably sleeved on the outside of the U-shaped round rod, springs are fixedly connected between the two side frames and the slide plate, the two springs are sleeved on the outside of the U-shaped round rod, two plug rods are symmetrically fixedly connected to the outside of the slide plate, and holes are provided on the tops of the two positioning plates, and the two plug rods are respectively inserted into the two holes.

[0007] Preferably, two positioning rods are symmetrically and fixedly installed on one side of the outer ring close to the outer disc, two positioning holes are symmetrically provided on one side of the outer disc close to the outer ring, and the two positioning rods are respectively inserted into the two positioning holes.

[0008] Preferably, an inner ring is fixedly installed inside the connecting pipe, a first sealing ring is fixedly installed on one side of the inner ring close to the outer pipe, and the first sealing ring is in contact with the outer pipe.

[0009] Preferably, a second sealing ring is fixedly installed on one side of the outer disc close to the outer ring, and the second sealing ring is in contact with the outer ring.

[0010] Preferably, the fixing mechanism includes a guide rod fixed on the side of the outer disc away from the outer ring, a guide plate is movably sleeved on the outer side of the guide rod, a plug is fixedly installed on one side of the guide plate close to the sliding plate, and a slot is provided on one side of the sliding plate close to the guide plate, and the plug is inserted into the slot.

[0011] Preferably, a screw rod is fixedly installed on the side of the outer disc away from the outer ring, the guide plate is movably sleeved on the outer side of the screw rod, a nut is provided on the side of the guide plate away from the outer disc, and the nut is threadedly sleeved on the outer side of the screw rod.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] (1) In the present utility model, through the cooperation between the positioning rod, the positioning hole and the positioning plate, it is convenient to connect the outer ring and the outer disc, and through the cooperation between the sliding plate, the U-shaped round rod and the spring, it is convenient for the two inserting rods to be respectively inserted into the two inserting holes to fix the outer ring and the outer disc, so as to facilitate the rapid installation of the corrugated pipe;

[0014] (2) In this new type, through the cooperation between the guide plate, the guide rod, the screw rod and the nut, it is convenient to fix the plug in the slot, and the sliding plate can be limited to prevent the sliding plate from moving, so as to facilitate the stable connection between the outer pipe and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is a schematic structural diagram of the metal bellows expansion joint that can be quickly installed according to the present utility model;

[0018] Figure 2 is a schematic structural diagram of the installation mechanism of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the sliding plate of the present utility model;

[0020] Figure 4 This is a schematic diagram of the disassembly structure of the outer pipeline and the connecting pipe of the present utility model;

[0021] Figure 5 This is a schematic diagram of the fixing mechanism structure of the present utility model;

[0022] In the figure: 1, bellows; 2, installation mechanism; 201, sliding plate; 202, spring; 203, U-shaped round rod; 204, slot; 205, insertion rod; 206, side frame; 207, positioning plate; 208, jack; 209, sealing ring one; 2010, inner ring; 2011, positioning hole; 2012, sealing ring two; 2013, positioning rod; 2014, outer ring; 3, fixing mechanism; 301, guide rod; 302, guide plate; 303, insertion block; 304, screw; 305, nut; 4, outer pipeline; 5, connecting pipe; 6, outer disc; 7, limiting rod. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1, given by Figure 1 The present utility model includes a bellows 1. Connecting pipes 5 are fixedly installed at both ends of the bellows 1. Outer discs 6 are fixedly installed on the outer sides of the two connecting pipes 5. Two limiting rods 7 are symmetrically installed between the two outer discs 6. An outer pipeline 4 is arranged outside the bellows 1. The outer pipeline 4 is sleeved inside the connecting pipe 5. An installation mechanism 2 is installed between the outer pipeline 4 and the connecting pipe 5. A fixing mechanism 3 is installed on the installation mechanism 2.

[0025] Specifically, given by Figures 2 - 4Given that the installation mechanism 2 includes a sliding plate 201 located outside the connecting pipe 5, an outer ring 2014 is fixedly installed on the outside of the outer pipe 4, two positioning plates 207 are symmetrically and fixedly installed on the side of the outer ring 2014 close to the outer disc 6, both of the two positioning plates 207 penetrate through the outer disc 6, two side frames 206 are symmetrically and fixedly installed on the side of the outer disc 6 away from the outer ring 2014, the two side frames 206 are respectively sleeved on the outside of the two positioning plates 207, a U-shaped round rod 203 is fixedly connected between the tops of the two side frames 206, the sliding plate 201 is movably sleeved on the outside of the U-shaped round rod 203, springs 202 are fixedly connected between the two side frames 206 and the sliding plate 201, both of the two springs 202 are sleeved on the outside of the U-shaped round rod 203, two insertion rods 205 are symmetrically and fixedly connected to the outside of the sliding plate 201, insertion holes 208 are provided at the tops of the two positioning plates 207, and the two insertion rods 205 are respectively inserted into the two insertion holes 208. Two positioning rods 2013 are symmetrically and fixedly installed on the side of the outer ring 2014 close to the outer disc 6, two positioning holes 2011 are symmetrically provided on the side of the outer disc 6 close to the outer ring 2014, and the two positioning rods 2013 are respectively inserted into the two positioning holes 2011. An inner ring 2010 is fixedly installed inside the connecting pipe 5, a first sealing ring 209 is fixedly installed on the side of the inner ring 2010 close to the outer pipe 4, and the first sealing ring 209 is in contact with the outer pipe 4. A second sealing ring 2012 is fixedly installed on the side of the outer disc 6 close to the outer ring 2014, and the second sealing ring 2012 is in contact with the outer ring 2014. When the outer pipe 4 is fixed to the connecting pipe 5, the outer ring 2014 is in contact with the second sealing ring 2012, and the outer pipe 4 is in contact with the first sealing ring 209, so as to ensure the sealing performance between the outer pipe 4 and the connecting pipe 5 through double sealing and avoid leakage;

[0026] In the use state, first slide the sliding plate 201 upward along the U-shaped round rod 203 to drive the two insertion rods 205 to rise. At this time, both of the two springs 202 are stretched. Then, sleeved the outer pipe 4 inside the connecting pipe 5, so that the two positioning rods 2013 are respectively inserted into the two positioning holes 2011. At the same time, both of the two positioning plates 207 penetrate through the outer disc 6, and the two side frames 206 are respectively sleeved on the outside of the two positioning plates 207 until the outer ring 2014 is in contact with the second sealing ring 2012 and the outer pipe 4 is in contact with the first sealing ring 209. Then release the control of the sliding plate 201. At this time, the two springs 202 reset to drive the sliding plate 201 to slide downward along the U-shaped round rod 203 until the two insertion rods 205 are respectively inserted into the two insertion holes 208 to fix the outer ring 2014 and the outer disc 6 and fix the outer pipe 4 and the connecting pipe 5, and finally realize the rapid installation of the corrugated pipe 1.

[0027] Specifically, by Figure 5Given that the fixing mechanism 3 includes a guide rod 301 fixed to the side of the outer disc 6 away from the outer ring 2014. A guide plate 302 is movably sleeved on the outer side of the guide rod 301. A plug 303 is fixedly installed on the side of the guide plate 302 close to the sliding plate 201. A slot 204 is provided on the side of the sliding plate 201 close to the guide plate 302. The plug 303 is inserted into the slot 204. A screw rod 304 is fixedly installed on the side of the outer disc 6 away from the outer ring 2014. The guide plate 302 is movably sleeved on the outer side of the screw rod 304. A nut 305 is provided on the side of the guide plate 302 away from the outer disc 6. The nut 305 is threadedly sleeved on the outer side of the screw rod 304;

[0028] In the use state, when the two insertion rods 205 are respectively inserted into the two insertion holes 208, the plug 303 and the slot 204 are at the same height. Then, the guide plate 302 is slid along the guide rod 301 until it fits with the sliding plate 201. At the same time, the plug 303 is inserted into the slot 204. Then, the nut 305 is sleeved on the outer side of the screw rod 304 and tightened to fix the plug 303 in the slot 204. At the same time, the sliding plate 201 is limited to prevent it from moving, and finally the stable connection between the outer pipe 4 and the connecting pipe 5 is realized.

Claims

1. A metal bellows expansion joint that can be quickly installed, comprising a bellows (1), characterized in that: Both ends of the bellows (1) are fixedly mounted with connecting pipes (5), the outer sides of the two connecting pipes (5) are fixedly mounted with outer discs (6), two limit rods (7) are symmetrically mounted between the two outer discs (6), an outer pipe (4) is arranged on the outer side of the bellows (1), the outer pipe (4) is sleeved inside the connecting pipe (5), a mounting mechanism (2) is mounted between the outer pipe (4) and the connecting pipe (5), and a fixing mechanism (3) is mounted on the mounting mechanism (2); The mounting mechanism (2) comprises a slide plate (201) located outside the connecting pipe (5); an outer ring (2014) is fixedly mounted on the outer side of the outer pipe (4); two positioning plates (207) are symmetrically fixedly mounted on a side of the outer ring (2014) close to the outer disk (6); the two positioning plates (207) both penetrate the outer disk (6); two side frames (206) are symmetrically fixedly mounted on a side of the outer disk (6) away from the outer ring (2014); the two side frames (206) are respectively sleeved on the outer sides of the two positioning plates (207); the two side frames (206) A U-shaped round rod (203) is fixedly connected between the tops of the two side frames (206), the slide plate (201) is movably sleeved on the outside of the U-shaped round rod (203), springs (202) are fixedly connected between the two side frames (206) and the slide plate (201), the two springs (202) are sleeved on the outside of the U-shaped round rod (203), the outside of the slide plate (201) is symmetrically fixedly connected with two insertion rods (205), the tops of the two positioning plates (207) are each provided with an insertion hole (208), and the two insertion rods (205) are respectively inserted into the two insertion holes (208).

2. A metal bellows expansion joint that can be quickly installed according to claim 1, characterized in that: Two positioning rods (2013) are symmetrically fixedly mounted on one side of the outer ring (2014) close to the outer disk (6); two positioning holes (2011) are symmetrically provided on one side of the outer disk (6) close to the outer ring (2014); and the two positioning rods (2013) are respectively inserted into the two positioning holes (2011).

3. A metal bellows expansion joint that can be quickly installed according to claim 1, characterized in that: An inner ring (2010) is fixedly installed inside the connecting pipe (5), and a sealing ring (209) is fixedly installed on a side of the inner ring (2010) close to the outer pipe (4), and the sealing ring (209) is in close contact with the outer pipe (4).

4. A metal bellows expansion joint that can be quickly installed according to claim 1, characterized in that: A second sealing ring (212) is fixedly mounted on a side of the outer disk (6) close to the outer ring (2014), and the second sealing ring (2012) is in close contact with the outer ring (2014).

5. A metal bellows expansion joint that can be quickly installed according to claim 1, characterized in that: The fixing mechanism (3) comprises a guide rod (301) fixed to a side of the outer disk (6) away from the outer ring (2014); a guide plate (302) is movably sleeved on the outer side of the guide rod (301); an insert block (303) is fixedly mounted on a side of the guide plate (302) close to the slide plate (201); a slot (204) is provided on a side of the slide plate (201) close to the guide plate (302); and the insert block (303) is inserted into the slot (204).

6. A metal bellows expansion joint that can be quickly installed according to claim 1, characterized in that: A screw rod (304) is fixedly mounted on the side of the outer disk (6) away from the outer ring (2014); the guide plate (302) is movably sleeved on the outside of the screw rod (304); a nut (305) is provided on the side of the guide plate (302) away from the outer disk (6); and the nut (305) is threadedly sleeved on the outside of the screw rod (304).

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