Ferrule type connecting joint

Abstract

The utility model discloses a ferrule type connector, which relates to the technical field of pipe fitting connectors and comprises a connecting sleeve, a pipe fitting and a nut, and an external connecting end and a screwing end are integrally formed on two sides of a horizontal end of the connecting sleeve respectively. The sealing ring is arranged between the pipe fitting and the connecting sleeve, the rubber pad on the inner surface wall of the inner ring abuts against the outer surface wall of the pipe fitting at the moment, the nut is rotated, the matching ring is screwed with the screwing end, along with gradual approaching of the matching ring to the connecting sleeve, the inclined face of the screwing end is in sliding fit with the inclined faces of the multiple sets of clamping blocks, and meanwhile the multiple sets of clamping blocks contract inwards; the sliding blocks at the bottoms of the multiple sets of clamping blocks slide along the corresponding sliding grooves and compress the springs till the screwing ends are completely screwed with the matching ring, and at the moment, the rubber blocks on the outer surface walls of the multiple sets of clamping blocks are all tightly attached to the outer surface wall of the pipe fitting, so that the convenience of disassembly and assembly of the connector is guaranteed, and meanwhile the stability of pipe fitting connection is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to a ferrule type connecting joint. Background Art

[0002] In automobiles, ships and engineering equipment, there are many connections between oil pipes and air pipes, most of which use a hollow joint body and a nut. The pipe is inserted into the hollow part of the joint body and the nut, and a ferrule is provided between the pipe and the joint body and the nut.

[0003] For example, patent application number CN201621413056.0 provides a ferrule-type pipe fitting, which includes a hollow fitting body and a nut, a pipe is inserted into the hollow part of the fitting body and the nut, a ferrule is provided between the pipe and the fitting body and the nut, the ferrule includes a first ferrule and a second ferrule, the outer ring surface of the hollow annular boss of the first ferrule is tightly matched with the inclined groove of the fitting body, and the front end of the inner ring surface of the hollow annular boss forms a cutting edge, and the cutting edge cuts into the surface of the pipe body when the first ferrule is subjected to force, the outer ring horizontal surface of the hollow annular boss of the first ferrule is tightly matched with the inner surface of the nut platform, and the inner ring step surface of the hollow annular boss of the first ferrule is tightly matched with the outer ring inclined surface of the second ferrule.

[0004] Based on the above search, combined with the prior art, it is found that the ferrule-type connection joint similar to the above disclosed in the prior art is deformed into a drum shape after the first ferrule and the second ferrule are pressed in, and its front edge cuts into the surface of the pipe at the same time, and the rear end is tightly connected with the pipe and the nut, thereby greatly improving the stability of the pipe joint in preventing disengagement and vibration. In the specific implementation process, both sets of springs are horizontally extended and retracted, and the first ferrule and the second ferrule, which are integrated and annular in structure, are often unevenly restrained by the inward contraction force, resulting in poor stability of the connection between the pipe fitting and the first ferrule and the second ferrule. Therefore, a ferrule-type connection joint is proposed to improve the above problems. Utility Model Content

[0005] The purpose of the present application is to provide a ferrule type connection joint to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a ferrule-type connection joint, comprising a connecting sleeve, a pipe fitting and a nut, wherein the connecting sleeve has an external connection end and a screw-on end integrally formed on both sides of the horizontal end thereof, an inner ring and a mating ring integrally formed on the inner surface wall of the nut, the inner surface wall of the mating ring is screwed together with the outer surface wall of the screw-on end, the open end of the pipe fitting is in contact with one side of the connecting sleeve, and a fixing component for fixing the pipe fitting is arranged between the vertical end of the inner ring and the inside of the screw-on end.

[0007] As a further supplement to the present solution, an outer ring is overlapped on the side of the nut away from the connecting sleeve, the outer ring is in a C-shaped structure, and the outer ring is fixedly connected to the outer wall of the pipe fitting through a locking rod.

[0008] As a further supplement to the present solution, a rubber gasket is fixedly connected to the inner surface wall of the inner ring arc-shaped end, and the inner surface wall of the arc-shaped end of the rubber gasket abuts against the outer surface wall of the pipe fitting.

[0009] As a further supplement to the present solution, a sealing ring is fixedly connected to a side of the connecting sleeve away from the external connection end, and an outer wall of the sealing ring abuts against an open end of the pipe fitting.

[0010] As a further supplement to the present solution, the fixing assembly includes a plurality of groups of clamping blocks abutting against the outer wall of the vertical end of the inner ring, the inclined surfaces of the plurality of groups of clamping blocks slidingly cooperate with the inclined surfaces of the screw-on ends, the plurality of groups of clamping blocks are fixedly connected with rubber blocks on one side close to the pipe fitting, and elastic parts for resetting the clamping blocks are provided between the plurality of groups of clamping blocks and the inner ring.

[0011] As a further supplement to this solution, the elastic part includes a moving block fixedly connected to the clamping block, the outer wall of the moving block is slidably connected to the inner wall of the inner ring through a sliding groove, and a spring is fixedly connected between the moving block and the inner wall of the inner ring.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, the open end of the pipe fitting is connected to one side of the connecting sleeve, and the sealing ring is placed between the pipe fitting and the connecting sleeve. At this time, the rubber pad on the inner surface wall of the inner ring is in contact with the outer surface wall of the pipe fitting. The nut is rotated, and the matching ring is screwed with the screw-on end. As the matching ring gradually approaches the connecting sleeve, the inclined surface of the screw-on end and the inclined surfaces of the multiple groups of clamping blocks slide and cooperate, and the multiple groups of clamping blocks shrink inwardly. The sliders at the bottom of the multiple groups of clamping blocks slide along the corresponding slide grooves and compress the springs until the screw-on end is completely screwed with the matching ring. At this time, the rubber blocks on the outer surfaces of the multiple groups of clamping blocks are all tightly attached to the outer surface wall of the pipe fitting, thereby ensuring the convenience of disassembly and assembly of the connecting joint while ensuring the stability of the pipe fitting connection.

[0014] 2. In the utility model, when it is necessary to keep the pipe fixed and connect the connecting sleeve, the outer ring of the C-shaped structure is fixed to the outer wall of the pipe by the locking rod, and the outer ring is made to abut the outer wall of the nut, thereby ensuring the relative position of the pipe and the nut, thereby ensuring the rapid connection of the connecting sleeve, thereby improving the convenience of using the compression sleeve type connection joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the three-dimensional structure in this embodiment;

[0017] Figure 2 Schematic diagram of the screw-on end structure in this embodiment;

[0018] Figure 3 Schematic diagram of the spring structure in this embodiment;

[0019] Figure 4 Schematic diagram of the outer ring structure in this embodiment.

[0020] In the figure: 1. connecting sleeve; 2. pipe fitting; 3. nut; 4. slide groove; 5. external end; 6. outer ring; 7. locking rod; 8. screw-on end; 9. sealing ring; 10. clamping block; 11. inner ring; 12. rubber gasket; 13. rubber block; 14. moving block; 15. spring; 16. matching ring. DETAILED DESCRIPTION

[0021] 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.

[0022] Example: Reference Figure 1-4 A ferrule-type connection joint shown in the figure comprises a connection sleeve 1, a pipe fitting 2 and a nut 3, the connection sleeve 1 is respectively formed with an external connection end 5 and a screw-on end 8 on both sides of the horizontal end, the inner surface wall of the nut 3 is formed with an inner ring 11 and a matching ring 16, the inner surface wall of the matching ring 16 is screwed and connected with the outer surface wall of the screw-on end 8, the open end of the pipe fitting 2 is in contact with one side of the connection sleeve 1, and a fixing component for fixing the pipe fitting 2 is arranged between the vertical end of the inner ring 11 and the inside of the screw-on end 8;

[0023] The open end of the pipe fitting 2 is connected to one side of the connecting sleeve 1, and the sealing ring 9 is placed between the pipe fitting 2 and the connecting sleeve 1. At this time, the rubber gasket 12 on the inner surface wall of the inner ring 11 is in contact with the outer surface wall of the pipe fitting 2. The nut 3 is turned, and the matching ring 16 is screwed with the screw-on end 8. As the matching ring 16 gradually approaches the connecting sleeve 1, the inclined surface of the screw-on end 8 slides with the inclined surface of the multiple groups of clamping blocks 10, and the multiple groups of clamping blocks 10 shrink inwardly. The moving blocks 14 at the bottom of the multiple groups of clamping blocks 10 slide along the corresponding slide grooves 4 and compress the springs 15 until the screw-on end 8 is completely screwed with the matching ring 16. At this time, the rubber blocks 13 on the outer surface walls of the multiple groups of clamping blocks 10 are all tightly attached to the outer surface wall of the pipe fitting 2, thereby ensuring the convenience of disassembly and assembly of the connecting joint while ensuring the stability of the connection of the pipe fitting 2.

[0024] An outer ring 6 is overlapped on the side of the nut 3 away from the connecting sleeve 1. The outer ring 6 is a C-shaped structure and is fixedly connected to the outer wall of the pipe fitting 2 through a locking rod 7. When it is necessary to keep the pipe fitting 2 fixed and connect the connecting sleeve 1, the outer ring 6 of the C-shaped structure is fixed to the outer wall of the pipe fitting 2 through the locking rod 7, and the outer ring 6 is made to abut against the outer wall of the nut 3, thereby ensuring the relative position of the pipe fitting 2 and the nut 3, thereby ensuring the rapid access of the connecting sleeve 1, thereby improving the convenience of using the compression sleeve type connection joint.

[0025] A rubber gasket 12 is fixedly connected to the inner surface wall of the arcuate end of the inner ring 11, and the inner surface wall of the arcuate end of the rubber gasket 12 abuts against the outer surface wall of the pipe fitting 2 to ensure the air tightness between the inner ring 11 and the pipe fitting 2. A sealing ring 9 is fixedly connected to the side of the connecting sleeve 1 away from the external connection end 5, and the outer surface wall of the sealing ring 9 abuts against the open end of the pipe fitting 2 to ensure the air tightness between the connecting sleeve 1 and the pipe fitting 2.

[0026] The fixing assembly includes a plurality of clamping blocks 10 abutting against the outer wall of the vertical end of the inner ring 11, the inclined surfaces of the plurality of clamping blocks 10 slide with the inclined surfaces of the screw-on end 8, a rubber block 13 is fixedly connected to one side of the plurality of clamping blocks 10 close to the pipe 2, and an elastic part for resetting the clamping blocks 10 is provided between the plurality of clamping blocks 10 and the inner ring 11, the elastic part includes a moving block 14 fixedly connected to the clamping block 10, the outer wall of the moving block 14 is slidably connected to the inner wall of the inner ring 11 through the slide groove 4, and the moving block 14 is fixedly connected to the inner wall of the inner ring 11 through the slide groove 4. A spring 15 is fixedly connected between the moving block 14 and the inner surface wall of the inner ring 11. As the matching ring 16 gradually approaches the connecting sleeve 1, the inclined surface of the screw-on end 8 slides with the inclined surfaces of the multiple groups of clamping blocks 10, and the multiple groups of clamping blocks 10 shrink inward. The moving blocks 14 at the bottom of the multiple groups of clamping blocks 10 slide along the corresponding slide groove 4 and compress the spring 15 until the screw-on end 8 is completely screwed with the matching ring 16. At this time, the rubber blocks 13 on the outer wall of the multiple groups of clamping blocks 10 are all tightly attached to the outer wall of the pipe fitting 2.

[0027] The working principle of the utility model is as follows: the open end of the pipe fitting 2 is connected to one side of the connecting sleeve 1, the sealing ring 9 is placed between the pipe fitting 2 and the connecting sleeve 1, and at this time, the rubber gasket 12 on the inner surface wall of the inner ring 11 is in contact with the outer surface wall of the pipe fitting 2, the nut 3 is rotated, the matching ring 16 is screwed with the screw-on end 8, and as the matching ring 16 gradually approaches the connecting sleeve 1, the inclined surface of the screw-on end 8 slides with the inclined surface of the multiple groups of clamping blocks 10, and the multiple groups of clamping blocks 10 shrink inwardly, and the moving blocks 14 at the bottom of the multiple groups of clamping blocks 10 slide along the corresponding slide grooves 4, and compress the spring 15 until the screw-on The end 8 is completely screwed into the matching ring 16. At this time, the rubber blocks 13 on the outer walls of the multiple groups of clamping blocks 10 are all tightly attached to the outer wall of the pipe fitting 2, thereby ensuring the convenience of disassembly and assembly of the connecting joint while ensuring the stability of the connection of the pipe fitting 2. When it is necessary to keep the pipe fitting 2 fixed and connect the connecting sleeve 1, the outer ring 6 of the C-shaped structure is fixed to the outer wall of the pipe fitting 2 through the locking rod 7, and the outer ring 6 is made to abut the outer wall of the nut 3, thereby ensuring the relative position of the pipe fitting 2 and the nut 3, thereby ensuring the rapid access of the connecting sleeve 1, thereby improving the convenience of using the ferrule type connecting joint.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A ferrule type connection joint, comprising a connection sleeve (1), a pipe fitting (2) and a nut (3), characterized in that: The connecting sleeve (1) has an external connection end (5) and a screw-on end (8) formed integrally on both sides of the horizontal end thereof, and the inner surface wall of the nut (3) has an inner ring (11) and a matching ring (16) formed integrally thereon; the inner surface wall of the matching ring (16) is screwed together with the outer surface wall of the screw-on end (8); the open end of the pipe fitting (2) is in contact with one side of the connecting sleeve (1); and a fixing component for fixing the pipe fitting (2) is provided between the vertical end of the inner ring (11) and the inside of the screw-on end (8).

2. A ferrule type connection joint according to claim 1, characterized in that: An outer ring (6) is overlapped on the side of the nut (3) away from the connecting sleeve (1); the outer ring (6) is in a C-shaped structure, and the outer ring (6) is fixedly connected to the outer wall of the pipe fitting (2) via a locking rod (7).

3. A ferrule type connection joint according to claim 2, characterized in that: The inner surface wall of the arc-shaped end of the inner ring (11) is fixedly connected with a rubber gasket (12), and the inner surface wall of the arc-shaped end of the rubber gasket (12) abuts against the outer surface wall of the pipe fitting (2).

4. A ferrule type connection joint according to claim 3, characterized in that: The side of the connecting sleeve (1) away from the external connection end (5) is fixedly connected to a sealing ring (9), and the outer wall of the sealing ring (9) is in contact with the open end of the pipe (2).

5. The ferrule type connection joint according to claim 4, characterized in that: The fixing assembly comprises a plurality of groups of clamping blocks (10) abutting against the outer wall of the vertical end of the inner ring (11); the inclined surfaces of the plurality of groups of clamping blocks (10) are slidably matched with the inclined surfaces of the screw-on ends (8); a rubber block (13) is fixedly connected to one side of the plurality of groups of clamping blocks (10) close to the pipe (2); and an elastic portion for resetting the clamping blocks (10) is provided between the plurality of groups of clamping blocks (10) and the inner ring (11).

6. The ferrule type connection joint according to claim 5, characterized in that: The elastic portion comprises a moving block (14) fixedly connected to the clamping block (10); an outer wall of the moving block (14) is slidably connected to an inner wall of the inner ring (11) via a sliding groove (4); and a spring (15) is fixedly connected between the moving block (14) and the inner wall of the inner ring (11).

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