Adjustable metal corrugated pipe connecting device

Abstract

The utility model relates to an adjustable metal corrugated pipe connecting device which comprises a corrugated pipe body. The fixing rings are fixedly mounted on two sides of the surface of the corrugated pipe main body; a plurality of telescopic pipes are mounted between the two fixing rings; the connecting pieces are installed at the two ends of the corrugated pipe body, and the assembling heads are arranged on one sides of the connecting pieces and provided with annular clamping grooves. The connecting piece comprises an installation ring fixedly installed on one side of the fixing ring, a connector pipe is fixedly installed on one side of the installation ring, the connecting piece on one side of the corrugated pipe body is connected with the assembling head, and assembling is completed, specifically, the pushing ring is pulled to slide on the surface of the connector pipe to enable the balls to be exposed, the connector pipe is inserted into the assembling head at the moment, and the connector pipe is inserted into the assembling head. And when the four balls are located in the annular clamping groove in the surface of the assembly head, the pushing ring moves to the surfaces of the four balls under the action of the four springs, the balls are prevented from moving, and therefore installation of the assembly head and the joint pipe is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of metal bellows equipment, in particular to an adjustable metal bellows connecting device. Background Art

[0002] Metal bellows is a pipe with a regular wave-like appearance. Commonly used metal bellows are made of carbon steel, stainless steel, steel lined with plastic, aluminum, etc. They are mainly used for non-concentric axial transmission with a very small bending radius, or irregular turning, expansion and contraction, or absorption of thermal deformation of pipes, or for connecting pipes in situations where it is not convenient to install with fixed elbows. In the prior art, metal bellows do not have the function of facilitating the adjustment of length, and cannot reduce the deformation frequency of the bellows, resulting in a reduced service life. At the same time, the connections of metal bellows are mostly fixed with bolts and lack quick-insert function.

[0003] For example, a metal bellows disclosed in the authorized patent document with application number CN201922454072.4 relates to the technical field of bellows, which includes a tube body and connectors arranged at both ends of the tube body, the connectors include a fastening portion and a threaded portion integrally arranged with the tube body, and also include an end cap threadedly connected to the threaded portion, the end cap is provided with a mounting groove for the threaded portion to pass through, the fastening portion is sleeved with a locking assembly, and the locking assembly keeps the end cap and the connector relatively fixed. The utility model has the effect that debris cannot enter the bellows from both ends of the bellows during transportation.

[0004] The above patent does not have the function of facilitating length adjustment and cannot reduce the deformation frequency of the bellows, resulting in a reduced service life. At the same time, most of the metal bellows connections are fixed with bolts and lack a quick-insert function. Therefore, we need to provide an adjustable metal bellows connection device. Utility Model Content

[0005] The utility model aims to provide an adjustable metal bellows connection device, which completes the assembly by connecting the connecting piece on one side of the bellows body with the assembly head. The specific operation is to pull the push ring to slide on the surface of the joint pipe to expose the balls. At this time, the joint pipe is inserted into the assembly head until four balls are located in the annular grooves on the surface of the assembly head. The push ring is acted upon by four springs to move to the surface of the four balls to prevent the balls from moving, thereby completing the installation of the assembly head and the joint pipe, and solving the problem that most of the metal bellows connections proposed in the above background technology are fixed by bolts and lack a quick-insertion function.

[0006] To achieve the above object, the utility model provides the following technical solution: an adjustable metal bellows connection device, comprising:

[0007] Bellows body;

[0008] A fixing ring fixedly mounted on both sides of the surface of the bellows body;

[0009] A plurality of telescopic tubes are installed between the two fixing rings;

[0010] Connectors installed at both ends of the bellows body, and an assembly head with an annular groove arranged on one side of the connector;

[0011] The connecting part includes a mounting ring fixedly mounted on one side of the fixing ring, a joint pipe fixedly mounted on one side of the mounting ring, a pushing ring mounted on the surface of the joint pipe via an elastic member, four circular holes are opened inside the joint pipe, balls are slidably mounted inside the four circular holes, and the annular groove on the surface of the assembly head cooperates with the four balls.

[0012] Preferably, the elastic member includes a groove body, a spring and a sliding rod, four groove bodies are opened on one side of the push ring, springs are clamped inside the four groove bodies, a sliding rod is clamped at one end of the spring, and one end of the four sliding rods is fixedly mounted on the surface of the mounting ring.

[0013] Preferably, the surfaces of the four sliding rods are movably sleeved with guide cylinders, and the guide cylinders are fixedly installed inside the groove body.

[0014] Preferably, two shift plates are fixedly mounted on the surface of the push ring.

[0015] Preferably, two limiting rods are integrally processed on the surfaces of the four balls, and limiting grooves for the limiting rods to slide are provided inside the circular holes.

[0016] Preferably, a resistance ring body is fixedly installed inside the joint pipe, a sealing ring is installed on one side of the resistance ring body, and one side of the sealing ring is fitted with one side of the assembly head.

[0017] Preferably, the four telescopic tubes are all configured as PPR tubes.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model connects the connecting piece on one side of the corrugated pipe body with the assembly head to complete the assembly. The specific operation is to pull the push ring to slide on the surface of the joint pipe to expose the balls. At this time, the joint pipe is inserted into the assembly head until the four balls are located in the annular grooves on the surface of the assembly head. The push ring is acted upon by four springs to move to the surfaces of the four balls to prevent the balls from moving, thereby completing the installation of the assembly head and the joint pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a three-dimensional exploded view of the structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the limiting groove of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the elastic member of the utility model.

[0024] In the figure: 1. bellows body; 2. fixing ring; 3. telescopic tube; 4. connecting piece; 41. mounting ring; 42. joint tube; 43. pushing ring; 44. round hole; 45. ball; 40. elastic piece; 401. groove body; 402. spring; 403. slide rod; 5. annular groove; 6. assembly head; 7. guide cylinder; 8. dial plate; 9. limit rod; 10. limit groove; 11. abutment ring body; 12. sealing ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0026] See also Figure 1-4 The utility model provides a technical solution: an adjustable metal bellows connection device, comprising:

[0027] Bellows body 1;

[0028] A fixing ring 2 fixedly mounted on both sides of the surface of the bellows body 1;

[0029] A plurality of telescopic tubes 3 are installed between the two fixing rings 2;

[0030] Connectors 4 installed at both ends of the bellows body 1, and an assembly head 6 with an annular groove 5 provided on one side of the connector 4;

[0031] The connecting member 4 includes a mounting ring 41 fixedly mounted on one side of the fixing ring 2, a joint pipe 42 fixedly mounted on one side of the mounting ring 41, a push ring 43 mounted on the surface of the joint pipe 42 through an elastic member 40, four circular holes 44 are opened inside the joint pipe 42, and balls 45 are slidably mounted inside the four circular holes 44, and the annular groove 5 on the surface of the assembly head 6 is used in conjunction with the four balls 45.

[0032] The elastic member 40 includes a slot body 401, a spring 402 and a slide bar 403. Four slot bodies 401 are provided on one side of the push ring 43. The springs 402 are clamped inside the four slot bodies 401. The slide bar 403 is clamped at one end of the spring 402. One end of the four slide bars 403 is fixedly mounted on the surface of the mounting ring 41.

[0033] In this embodiment, the length of the bellows body 1 is adjusted according to actual use requirements. By pulling the fixing rings 2 at both ends away from each other, the four telescopic tubes between the two fixing rings 2 are stretched, thereby adjusting the length of the bellows body, and the four telescopic tubes are evenly distributed on the surface of the bellows body 1. Due to the limitation of the four telescopic tubes, the bellows body 1 is prevented from bending, which causes an increase in the deformation of the metal bellows, effectively reducing noise and extending the service life; the connector 4 on one side of the bellows body 1 is connected to the assembly head 6 to complete the assembly. The specific operation is to pull the push ring 43 to slide on the surface of the joint tube 42 to expose the ball 45. At this time, the joint tube 42 is inserted into the assembly head 6 until the four balls 45 are located in the annular groove 5 on the surface of the assembly head 6. The push ring 43 is acted upon by the four springs 402 to move to the surface of the four balls 45 to prevent the movement of the balls 45, thereby completing the installation of the assembly head 6 and the joint tube 42.

[0034] The surfaces of the four slide bars 403 are all movably sleeved with guide cylinders 7, and the guide cylinders 7 are fixedly installed inside the slot body 401;

[0035] Specifically, the surface of the slide rod 403 slides with the inside of the guide cylinder 7, and the guide cylinder 7 is fixedly installed in the groove body 401, which plays a guiding and supporting effect on the movement and adjustment of the push ring 43 and has the function of preventing the slide rod 403 from escaping from the groove body 401.

[0036] In order to facilitate the adjustment of the push ring 43 , two shifting plates 8 are fixedly mounted on the surface of the push ring 43 , and grooves are integrally machined on the shifting plates 8 , which can enhance friction during use.

[0037] Two limiting rods 9 are integrally processed on the surfaces of the four balls 45, and limiting grooves 10 for the limiting rods 9 to slide are provided inside the circular holes 44;

[0038] Furthermore, when the ball 45 slides in the circular hole 44 , the limiting rod 9 on the surface of the ball 45 slides in the limiting groove 10 to prevent the ball 45 from escaping from the circular hole 44 .

[0039] A resisting ring 11 is fixedly installed inside the joint pipe 42, and a sealing ring 12 is installed on one side of the resisting ring 11, and one side of the sealing ring 12 is in contact with one side of the assembly head 6;

[0040] It is worth noting that a resistance ring body 11 is fixedly installed inside the joint tube 42, and a sealing ring 12 is installed on one side of the resistance ring body 11. When the joint tube 42 and the assembly head 6 are installed, one end of the assembly head 6 will squeeze the sealing ring 12. The sealing ring 12 is made of rubber and has a certain deformation ability. When the ball 45 is located in the annular groove 5, one end of the assembly head 6 will squeeze the sealing ring 12 to enhance the sealing.

[0041] The four telescopic tubes 3 are all configured as PPR tubes;

[0042] Specifically, PPR is a random copolymer of polypropylene, which has the advantages of simple installation, good corrosion resistance, safety, strong sealing performance, etc., and has a long service life.

[0043] The device adjusts the length of the bellows body 1 according to actual use requirements. By pulling the fixing rings 2 at both ends away from each other, the four telescopic tubes between the two fixing rings 2 are stretched, thereby adjusting the length of the bellows body, and the four telescopic tubes are evenly distributed on the surface of the bellows body 1. Due to the restrictions of the four telescopic tubes, the bellows body 1 is prevented from bending, which causes an increase in the deformation of the metal bellows, effectively reducing noise and extending the service life; the connector 4 on one side of the bellows body 1 is connected to the assembly head 6 to complete the assembly. The specific operation is to pull the push ring 43 to slide on the surface of the joint tube 42 to expose the ball 45. At this time, the joint tube 42 is inserted into the assembly head 6 until the four balls 45 are located in the annular groove 5 on the surface of the assembly head 6. The push ring 43 is acted upon by the four springs 402 to move to the surface of the four balls 45 to prevent the movement of the balls 45, thereby completing the installation of the assembly head 6 and the joint tube 42.

[0044] 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. An adjustable metal bellows connection device, characterized in that: include: Bellows body (1); Fixed rings (2) fixedly mounted on both sides of the surface of the bellows body (1); A plurality of telescopic tubes (3) are installed between the two fixing rings (2); Connecting pieces (4) installed at both ends of the bellows body (1), and an assembly head (6) provided with an annular groove (5) on one side of the connecting piece (4); The connecting member (4) comprises a mounting ring (41) fixedly mounted on one side of the fixing ring (2); a joint pipe (42) is fixedly mounted on one side of the mounting ring (41); a pushing ring (43) is mounted on the surface of the joint pipe (42) via an elastic member (40); four circular holes (44) are provided inside the joint pipe (42); balls (45) are slidably mounted inside the four circular holes (44); and the annular groove (5) on the surface of the assembly head (6) cooperates with the four balls (45) for use.

2. The adjustable metal bellows connection device according to claim 1, characterized in that: The elastic member (40) comprises a groove body (401), a spring (402) and a slide bar (403); one side of the push ring (43) is provided with four groove bodies (401); the interiors of the four groove bodies (401) are all clamped with springs (402); one end of the spring (402) is clamped with a slide bar (403); one end of the four slide bars (403) are all fixedly mounted on the surface of the mounting ring (41).

3. The adjustable metal bellows connection device according to claim 2, characterized in that: The surfaces of the four sliding rods (403) are all movably sleeved with guide cylinders (7), and the guide cylinders (7) are fixedly installed inside the groove body (401).

4. The adjustable metal bellows connection device according to claim 2, characterized in that: Two shifting plates (8) are fixedly mounted on the surface of the push ring (43).

5. The adjustable metal bellows connection device according to claim 1, characterized in that: Two limiting rods (9) are integrally processed on the surfaces of the four balls (45), and limiting grooves (10) for the limiting rods (9) to slide are provided inside the circular holes (44).

6. The adjustable metal bellows connection device according to claim 1, characterized in that: A resisting ring body (11) is fixedly installed inside the joint pipe (42), a sealing ring (12) is installed on one side of the resisting ring body (11), and one side of the sealing ring (12) is in contact with one side of the assembly head (6).

7. The adjustable metal bellows connection device according to claim 1, characterized in that: The four telescopic tubes (3) are all configured as PPR tubes.

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