Detachable metal corrugated pipe assembly

Abstract

The utility model discloses a detachable metal corrugated pipe assembly, which relates to the field of metal corrugated pipes and comprises two corrugated pipe bodies which are spliced with each other, two ends of each corrugated pipe body are respectively and fixedly provided with an end head I and an end head II which have the same structure, and the inner walls of the end head I and the end head II are respectively and fixedly provided with a positioning plate and a sleeve plate. The positions of the sleeve plates correspond to those of the positioning plates, and the three sleeve plates and the three positioning plates are annularly and evenly distributed. The two corrugated pipe bodies are preliminarily butted and fixed in a mechanical mode, and the problems that in the prior art, when the two corrugated pipe bodies are preliminarily positioned and butted, the two corrugated pipe bodies are preliminarily fixed in a magnet mode, and when the corrugated pipe bodies are used for conveying heating gas, the magnets are prone to losing magnetism slowly, and the service life of the corrugated pipe bodies is prolonged are solved. And therefore, the magnetic property of the magnet is reduced and loses efficacy, and the corrugated pipe body is not convenient to reinstall after being disassembled next time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal bellows, especially a detachable metal bellows assembly. BACKGROUND

[0002] Metal bellows is a kind of pipe material that looks like regular wave, as sensitive element, shock-absorbing element, compensating element, sealing element, valve element and pipeline connecting element, it is widely used in automatic control and measuring instrument, vacuum technology, mechanical industry, power industry, transportation and atomic energy industry, etc., the metal bellows is mainly fixed by bolt when splicing, and the end of the metal bellows needs to be butt jointed before fixing, which is convenient for subsequent fixing operation, the traditional metal bellows does not have butt joint positioning structure, which causes butt joint difficulty, and a lot of time is wasted, so it is not convenient for connection and use, which is very troublesome.

[0003] For example, the existing patent publication CN218236507U, named a composite metal bellows, proposes that the utility model benefits from the setting of bellows body, positioning ring, arc-shaped protrusion, magnetic attraction limiting block, annular positioning slot and arc-shaped magnetic attraction clamping groove, when connecting two groups of bellows assemblies, the end of the positioning ring away from the bellows body is inserted and installed in the annular positioning slot of the adjacent bellows body, and the magnetic attraction limiting block is magnetically attracted and installed in the arc-shaped magnetic attraction clamping groove through magnetic force, so that the positioning ring and the annular positioning slot are positioned and clamped through the magnetic attraction of the magnetic attraction limiting block and the arc-shaped magnetic attraction clamping groove, thereby realizing the preliminary positioning and fixing of the two bellows bodies, facilitating further fixing by cooperating with the bolt, which is conducive to realizing quick butt joint positioning, without wasting a lot of time in the butt joint process, convenient for connection and use, and high practicability.

[0004] However, the above patent uses a magnet to preliminarily fix two metal bellows when preliminarily positioning and butt jointing the two metal bellows, when the metal bellows is used for hot gas conveying, the magnet is easy to lose magnetism slowly, which leads to the reduction of magnetism of the magnet and failure, which is not conducive to the reinstallation of the metal bellows after disassembly next time, therefore, it is necessary to provide a detachable metal bellows assembly to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a detachable metal bellows assembly to solve the problem that the existing technology preliminarily fixes two metal bellows by magnet when preliminarily positioning and butt jointing the two metal bellows, when the metal bellows is used for hot gas conveying, the magnet is easy to lose magnetism slowly, which leads to the reduction of magnetism of the magnet and failure, which is not conducive to the reinstallation of the metal bellows after disassembly next time.

[0006] To achieve the above object, the utility model provides following technical scheme: a detachable metal bellows assembly, including two mutually spliced bellows bodies, the both ends of bellows body are fixedly provided with structure same end head one and end head two respectively, the inner wall of end head one and end head two is fixedly provided with positioning plate and sleeve plate respectively, the position of sleeve plate and positioning plate corresponds, the sleeve plate and positioning plate all are annular and are evenly distributed with three, the sleeve plate of one bellows body is movably sleeved on the outside of the positioning plate of another bellows body, and the end head two of one bellows body and the end head one of another bellows body mutually adhere to each other.

[0007] The inside of positioning plate is fixedly provided with two symmetrical circular grooves, the upper portion of circular groove is provided with circular hole, the diameter of circular groove is greater than the diameter of circular hole, the inner wall of circular groove is slidably provided with lifting plate, the top of lifting plate is fixedly provided with semispherical convex block with the same diameter as the circular hole, and a spring is fixedly connected between the bottom of lifting plate and the end portion of circular groove.

[0008] Preferably, the outer circle of the end head one and the end head two away from the one end of the bellows body is fixedly provided with a connecting flange, four first bolts are threadedly connected to the connecting flange, and first fastening nuts are threadedly connected to the first bolts.

[0009] Preferably, the outer circle of the end head one and the end head two is movably sleeved with an elastic ring, a metal woven mesh is fixedly connected between the two elastic rings, an opening is formed in the elastic ring, connecting ears are fixed to the elastic ring on both sides of the opening, a second bolt is threadedly connected between the two connecting ears, and a second fastening nut is threadedly connected to the second bolt.

[0010] Preferably, the metal woven mesh and the bellows body have a gap therebetween.

[0011] Preferably, the elastic ring and the first bolt have a gap therebetween.

[0012] Preferably, the side surface of the connecting flange is fixedly provided with a sealing ring.

[0013] The utility model discloses the technical effect and advantage:

[0014] 1、 the utility model discloses the mechanical mode to two bellows bodies carries out the preliminary butt joint and fixed, solves the prior art two bellows bodies preliminary positioning butt joint, adopts the magnet mode and carries out the preliminary fixed two bellows bodies, when the bellows body is used for the heat gas delivery, the magnet is easy to lose magnetism slowly, and then leads to the magnet magnetism reduction failure, is not favorable for the next bellows body dismounts and reinstallation problem.

[0015] 2、two bellows body preliminary butt joint, the position of the connecting flange on the two bellows bodies can be quickly corresponded, and then the first bolt is screwed into the adjacent two connecting flanges in turn, and the first fastening nut is screwed tightly, so that the quick installation of the two bellows bodies is completed, and the assembly efficiency of the metal bellows assembly is improved;

[0016] 3、Through the installation of the metal woven mesh, the outside of the bellows body is protected from being damaged by external force, and the service life of the bellows body is prolonged, when the bellows body needs to be disassembled, the second bolt is unscrewed, and then the elastic ring and the metal woven mesh can be disassembled, and the installation and disassembly convenience of the metal woven mesh is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the detachable metal bellows assembly.

[0018] Figure 2 It is a structure schematic view of the bellows body and the metal woven mesh.

[0019] Figure 3 It is a structure schematic view of the end head two.

[0020] Figure 4 It is a structure schematic view of the end head one.

[0021] Figure 5 It is a split cross-sectional structure schematic view of the positioning plate and the sleeve plate.

[0022] Figure 6 It is a structure schematic view of the metal woven mesh and the elastic cross section.

[0023] In the figure: 1, bellows body; 2, end head one; 3, end head two; 4, connecting flange; 5, first bolt; 6, first fastening nut; 7, positioning plate; 8, sleeve plate; 9, spring; 10, lifting plate; 11, hemispherical protrusion; 12, clamping groove; 13, elastic ring; 14, metal woven mesh; 15, connecting lug; 16, second bolt; 17, second fastening nut. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] The utility model provides a kind of detachable metal bellows assembly as shown in Figures 1-6 Two mutually spliced bellows bodies 1 are included, and the two ends of the bellows body 1 are respectively fixedly provided with end one 2 and end two 3 with the same structure, the inner walls of end one 2 and end two 3 are respectively fixedly provided with positioning plate 7 and sleeve plate 8, the positions of sleeve plate 8 and positioning plate 7 correspond, sleeve plate 8 and positioning plate 7 are both annular and uniformly distributed with three, when splicing two bellows bodies 1, sleeve plate 8 on one of the bellows bodies 1 is movably sleeved outside positioning plate 7 on the other bellows body 1, so that end two 3 on one of the bellows bodies 1 and end one 2 on the other bellows body 1 are mutually adhered, which is arranged to facilitate the preliminary butt joint of the two bellows bodies 1.

[0026] In addition, a connecting flange 4 is fixedly arranged at the outer circle of the end away from the bellows body 1 on end one 2 and end two 3, four first bolts 5 are threadedly connected on one of the connecting flanges 4, the first bolts 5 are threadedly connected with first fastening nuts 6, after the preliminary butt joint of the two bellows bodies 1, the positions of the connecting flanges 4 on the two bellows bodies 1 can be quickly corresponded, and then the first bolts 5 are sequentially screwed into the adjacent two connecting flanges 4, and the first fastening nuts 6 are screwed tightly, so that the quick installation of the two bellows bodies 1 is completed, and the assembly efficiency of the metal bellows assembly is improved.

[0027] In order to make the connection between the two bellows bodies 1 after the preliminary quick butt joint have a certain stability, two symmetrically arranged circular grooves are fixedly arranged in the positioning plate 7, a circular hole is arranged above the circular groove, the diameter of the circular groove is greater than the diameter of the circular hole, a lifting plate 10 is slidingly arranged on the inner wall of the circular groove, a hemispherical protrusion 11 with the same diameter as the circular hole is fixedly arranged on the top of the lifting plate 10, a spring 9 is fixedly connected between the bottom of the lifting plate 10 and the end of the circular groove, a clamping groove 12 matched with the hemispherical protrusion 11 is fixedly arranged in the sleeve plate 8, after the sleeve plate 8 on one of the bellows bodies 1 is movably sleeved outside the positioning plate 7 on the other bellows body 1, the spring 9 restores the elastic force, the lifting plate 10 and the hemispherical protrusion 11 are popped up, the hemispherical protrusion 11 is clamped in the clamping groove 12, so that the sleeve plate 8 is prevented from sliding out of the positioning plate 7, the connection between the two bellows bodies 1 after the preliminary quick butt joint can have a certain stability, the subsequent tightening and fixing operation of the first bolt 5 is facilitated, and the splicing efficiency of the two bellows bodies 1 is improved.

[0028] Due to the mechanical way of two bellows body 1 preliminary butt joint and fixed, solve the prior art of two bellows body 1 preliminary positioning butt joint, the magnet way is used to preliminary fixed two bellows body 1, when the bellows body 1 is used for heat gas conveying, the magnet is easy to lose magnetism, and then lead to the magnet magnetic reduction failure, not conducive to the next bellows body 1 disassembly and reinstallation problem.

[0029] When two bellows body 1 needs to be disassembled, the first bolt 5 is unscrewed, a certain external force is used to pull apart two bellows body 1, so that the hemispherical boss 11 is retracted into the circular groove, that is, the cover plate 8 is slipped out of the outside of the positioning plate 7, that is, the disassembly of two bellows body 1 is completed.

[0030] In order to protect the bellows body 1, the elastic ring 13 is movably sleeved at the outer circle of the end head 2 and the end head 3, the metal woven mesh 14 is fixedly connected between the two elastic rings 13, the opening is formed in the elastic ring 13, the connecting lug 15 fixedly connected with the elastic ring 13 is arranged on both sides of the opening, the second bolt 16 is threadedly connected between the two connecting lugs 15, the second fastening nut 17 is threadedly connected with the second bolt 16, the metal woven mesh 14 and the bellows body 1 have a gap, through the installation of the metal woven mesh 14, the outside of the bellows body 1 is protected from being damaged by external force, and the service life of the bellows body 1 is prolonged, when the bellows body 1 needs to be disassembled, the second bolt 16 is unscrewed, the elastic ring 13 and the metal woven mesh 14 can be disassembled, and the installation and disassembly convenience of the metal woven mesh 14 is improved.

[0031] In addition, the elastic ring 13 and the first bolt 5 have a gap, which is arranged to avoid the blocking of the first bolt 5 by the elastic ring 13.

[0032] Further, the side surface of the connecting flange 4 is fixedly provided with a sealing ring, and the sealing ring is installed to improve the sealing performance of the two bellows body 1.

Claims

1. A detachable metal bellows assembly, comprising two bellows bodies (1) spliced ​​together, characterized in that: The two ends of the bellows body (1) are respectively fixedly provided with an end head 1 (2) and an end head 2 (3) of the same structure, and the inner walls of the end head 1 (2) and the end head 2 (3) are respectively fixedly provided with a positioning plate (7) and a sleeve plate (8), and the positions of the sleeve plate (8) and the positioning plate (7) correspond to each other. The sleeve plate (8) and the positioning plate (7) are evenly distributed in three in a ring shape, and the sleeve plate (8) on one bellows body (1) is movably sleeved on the outside of the positioning plate (7) on the other bellows body (1), and the end head 2 (3) on one bellows body (1) and the end head 1 (2) on the other bellows body (1) are fitted with each other; The interior of the positioning plate (7) is fixedly provided with two symmetrically arranged circular grooves, a circular hole is provided above the circular groove, the diameter of the circular groove is larger than the diameter of the circular hole, a lifting plate (10) is provided on the inner wall of the circular groove so as to slide in contact with the inner wall of the circular groove, a hemispherical protrusion (11) with the same diameter as the circular hole is fixedly provided on the top of the lifting plate (10), a spring (9) is fixedly connected between the bottom of the lifting plate (10) and the end of the circular groove, and a card slot (12) adapted to the hemispherical protrusion (11) is fixedly provided inside the sleeve plate (8).

2. The detachable metal bellows assembly according to claim 1, characterized in that: The end head 1 (2) and the end head 2 (3) are both fixedly provided with a connecting flange (4) at the outer ring away from one end of the bellows body (1), and one of the connecting flanges (4) is threadedly connected to four first bolts (5) evenly distributed in an annular shape, and the first bolts (5) are threadedly connected to a first fastening nut (6).

3. The detachable metal bellows assembly according to claim 1, characterized in that: The outer rings of the first end (2) and the second end (3) are both movably sleeved with elastic rings (13), a metal braided mesh (14) is fixedly connected between the two elastic rings (13), an opening is opened on the elastic ring (13), and connecting ears (15) fixed on the elastic ring (13) are provided on both sides of the opening, a second bolt (16) is threadedly connected between the two connecting ears (15), and a second fastening nut (17) is threadedly connected to the second bolt (16).

4. The detachable metal bellows assembly according to claim 3, characterized in that: There is a gap between the metal braided mesh (14) and the corrugated pipe body (1).

5. The detachable metal bellows assembly according to claim 3, characterized in that: There is a gap between the elastic ring (13) and the first bolt (5).

6. The detachable metal bellows assembly according to claim 2, characterized in that: A sealing ring is fixedly provided on the side of the connecting flange (4).

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