Wear-resistant joint

Abstract

The utility model relates to a wear-resistant joint, which comprises a communicating pipe, two ends of the communicating pipe are provided with external threads, two ends of the communicating pipe are fixedly connected with inner pipes, the outer diameter of each inner pipe is smaller than that of the communicating pipe, the middle section of each inner pipe is provided with an annular groove, and the outer diameter of each annular groove is smaller than that of the communicating pipe. After the end portion of a pipeline is connected with the connector body, the rotating arm can be rotated to enable the connecting portions of the two hoops to be attached, then a bolt penetrates through a through hole formed in the connecting portions and is matched with a nut to connect and lock the two hoops, the hoop and an annular groove formed in the inner pipe are used for clamping the pipeline, and therefore the pipeline can be tightly connected. The pipeline is further fixed, and the problem that the sealing performance of the connecting position of the pipeline and the connector body is affected after a long time due to relative friction generated by the fact that the connecting position of the pipeline and the connector body is affected by medium pressure change is solved as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline joints, and particularly relates to a wear-resistant joint. Background Art

[0002] A joint is a part that connects pipes in a hydraulic system or installs pipes on hydraulic components. It is a general term for connectors that can be installed and removed in a fluid pathway. It mainly includes: welding type, ferrule type, crimping type and flaring type.

[0003] Most existing joints are connected to pipes using threaded connections. Due to the change in pipe diameter at the joint position, when the medium pressure increases, the connection between the joint and the pipe will be squeezed, causing relative friction between the joint and the pipe. After a long time, the connection between the pipe and the joint is easily damaged due to friction, affecting the sealing of the connection between the pipe and the joint. Utility Model Content

[0004] The purpose of the present invention is to provide a wear-resistant joint with a simple structure and reasonable design in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A wear-resistant joint comprises a connecting pipe with external threads at both ends, both ends of the connecting pipe are fixedly connected to an inner pipe, the outer diameter of the inner pipe is smaller than the outer diameter of the connecting pipe, an annular groove is provided on the middle section of the inner pipe, both ends of the connecting pipe are screwed with threaded sleeves through external threads, the end of the threaded sleeve away from the connecting pipe is fixedly connected to the joint body, two groups of symmetrically arranged ear plates are fixedly connected to the outer side wall of the threaded sleeve, the two ear plates in each group are rotatably connected to a clamp with a semicircular arc structure through a connecting piece, and the two clamps on both sides of the threaded sleeve are fixed by a locking piece.

[0007] As a further optimization solution of the present invention, the middle section of the communicating pipe is sleeved with an adjusting block having a regular hexagonal structure, and the inner wall of the adjusting block is fixed to the communicating pipe.

[0008] As a further optimization solution of the present invention, a sealing gasket is sleeved on one end of the inner tube close to the connecting tube, and the inner circumference of the sealing gasket is tightly fitted with the outer surface of the inner tube.

[0009] As a further optimization solution of the present invention, the length of the threaded sleeve is equal to the length of the external thread section of the connecting pipe. After the threaded sleeve is screwed to the connecting pipe, the clamp is positioned relative to the annular groove.

[0010] As a further optimization scheme of the present invention, the connecting part includes a pin shaft arranged between each group of two ear plates, the two ends of the pin shaft are respectively fixed to the adjacent sides of the two ear plates, the middle section of the pin shaft is rotatably connected to a rotating arm with an L-shaped structure, and the outer wall of the middle section of the clamp is fixedly connected to the end of the rotating arm away from the pin shaft.

[0011] As a further optimization solution of the present invention, both ends of the clamp are bent outward to form a connecting portion, a through hole is provided on the connecting portion, and the locking member includes a bolt passing through the through hole and the connecting portion, and also includes a nut threaded on the end of the bolt.

[0012] The beneficial effect of the utility model is that after the end of the pipe is connected to the joint body, the rotating arm can be rotated to fit the connecting parts of the two clamps, and then the bolts are passed through the through holes opened on the connecting parts, and the two clamps are connected and locked with the nuts. The pipe is clamped by using the annular grooves opened on the clamps and the inner pipe to further fix the pipe, and the connection between the pipe and the joint body is avoided as much as possible due to the influence of the medium pressure change to generate relative friction, which will affect the sealing of the connection between the pipe and the joint body after a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is an exploded view of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation of the threaded sleeve, rotating arm and clamp of the utility model;

[0017] Figure 5 It is a schematic diagram of the cross-sectional structure of the threaded sleeve of the utility model.

[0018] In the figure: 1. connecting pipe; 2. adjusting block; 3. inner pipe; 4. annular groove; 5. sealing gasket; 6. threaded sleeve; 7. joint body; 8. ear plate; 9. pin; 10. rotating arm; 11. clamp; 12. connecting part; 13. through hole; 14. bolt; 15. nut. DETAILED DESCRIPTION

[0019] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example

[0021] like Figure 1 - Figure 5 As shown, a wear-resistant joint includes a connecting pipe 1 with external threads at both ends, an adjusting block 2 with a regular hexagonal structure is sleeved on the middle section of the connecting pipe 1, and the inner wall of the adjusting block 2 is fixed to the connecting pipe 1, so that the user can use a wrench to clamp the adjusting block 2 and then use the wrench to form a labor-saving lever to rotate the connecting pipe 1;

[0022] Both ends of the connecting pipe 1 are fixedly connected to the inner pipe 3. The outer diameter of the inner pipe 3 is smaller than that of the connecting pipe 1. An annular groove 4 is opened in the middle section of the inner pipe 3. A sealing ring is embedded in the annular groove 4. A sealing gasket 5 is sleeved on the end of the inner pipe 3 close to the connecting pipe 1. The inner circumference of the sealing gasket 5 is tightly fitted with the outer surface of the inner pipe 3.

[0023] Both ends of the connecting pipe 1 are screwed with threaded sleeves 6 through external threads. The length of the threaded sleeve 6 is equal to the length of the external thread section of the connecting pipe 1. The end of the threaded sleeve 6 away from the connecting pipe 1 is fixedly connected to a joint body 7. The joint body 7 is provided with an internal thread and is provided for connecting to an external pipe.

[0024] Two groups of symmetrically arranged ear plates 8 are fixedly connected to the outer wall of the threaded sleeve 6. The two ear plates 8 in each group are rotatably connected to a hoop 11 with a semicircular arc structure through a connecting piece. The connecting piece includes a pin 9 provided between the two ear plates 8 in each group. The two ends of the pin 9 are respectively fixed to the adjacent sides of the two ear plates 8. The middle section of the pin 9 is rotatably connected to a rotating arm 10 with an L-shaped structure. The outer wall of the middle section of the hoop 11 is fixedly connected to the end of the rotating arm 10 away from the pin 9. After the threaded sleeve 6 is screwed to the connecting pipe 1, the hoop 11 is positioned relative to the annular groove 4.

[0025] Both ends of the clamp 11 are bent outward to form a connecting portion 12, and a through hole 13 is opened on the connecting portion 12. The two clamps 11 on both sides of the threaded sleeve 6 are fixed by a locking member. The locking member includes a bolt 14 passing through the through hole 13 and the connecting portion 12, and also includes a nut 15 screwed to the end of the bolt 14.

[0026] It should be noted that when using this wear-resistant joint, the user first screws the two threaded sleeves 6 onto the connecting pipe 1 through the external threads set at both ends of the connecting pipe 1, then sets the end of the pipe to be connected on the outside of the inner pipe 3, and slides the pipe along the length direction of the inner pipe 3 until the end of the pipe fits with the inner joint body 7. The joint body 7 is provided with an internal thread. At this time, the connecting pipe 1 can be rotated to realize the screw connection between the joint body 7 and the end of the pipe. After the screw connection is completed, the user rotates the two rotating arms 10 installed on both sides of the threaded sleeve 6 in opposite directions to drive the two clamps 11 to rotate until the connection formed by the bending ends of the two clamps 11 is 12 fit each other, at this time, the bolt 14 can be used to pass through the through hole 13 opened on the connecting part 12, and the nut 15 can be used to connect the connecting parts 12 of the two clamps 11 to each other to lock the pipeline, so as to further fix the pipeline, and try to avoid the connection between the pipeline and the joint body 7 from being affected by the change of medium pressure and generating relative friction. After a long time, it is easy to cause the connection between the pipeline and the joint body 7 to be damaged due to friction, affecting the sealing of the connection between the pipeline and the joint body 7. At the same time, a sealing ring is embedded in the annular groove 4. After the pipeline is installed, the sealing ring can fit tightly against the inner wall of the pipeline, further improving the sealing of the pipeline connection.

[0027] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A wear-resistant joint, comprising a connecting pipe (1) with external threads at both ends, characterized in that: Both ends of the connecting pipe (1) are fixedly connected to an inner pipe (3), the outer diameter of the inner pipe (3) is smaller than the outer diameter of the connecting pipe (1), and an annular groove (4) is provided on the middle section of the inner pipe (3). Both ends of the connecting pipe (1) are screwed to a threaded sleeve (6) through an external thread, and the end of the threaded sleeve (6) away from the connecting pipe (1) is fixedly connected to a joint body (7), and two groups of symmetrically arranged ear plates (8) are fixedly connected to the outer wall of the threaded sleeve (6), and the two ear plates (8) in each group are rotatably connected to a clamp (11) with a semicircular arc structure through a connecting piece, and the two clamps (11) on both sides of the threaded sleeve (6) are fixed by a locking piece.

2. The wear-resistant joint according to claim 1, characterized in that: The middle section of the communicating tube (1) is sleeved with an adjusting block (2) having a regular hexagonal structure, and the inner wall of the adjusting block (2) is fixed to the communicating tube (1).

3. The wear-resistant joint according to claim 1, characterized in that: A sealing gasket (5) is sleeved on one end of the inner tube (3) close to the connecting tube (1), and the inner circumference of the sealing gasket (5) is in close contact with the outer surface of the inner tube (3).

4. The wear-resistant joint according to claim 1, characterized in that: The length of the threaded sleeve (6) is equal to the length of the external thread section of the connecting pipe (1). After the threaded sleeve (6) is screwed to the connecting pipe (1), the clamp (11) is positioned relative to the annular groove (4).

5. The wear-resistant joint according to claim 1, characterized in that: The connecting member comprises a pin shaft (9) arranged between each group of two ear plates (8), the two ends of the pin shaft (9) are respectively fixed to the adjacent sides of the two ear plates (8), the middle section of the pin shaft (9) is rotatably connected to a rotating arm (10) with an L-shaped structure, and the outer wall of the middle section of the clamp (11) is fixedly connected to the end of the rotating arm (10) away from the pin shaft (9).

6. The wear-resistant joint according to claim 1, characterized in that: Both ends of the clamp (11) are bent outward to form a connecting portion (12), and a through hole (13) is provided on the connecting portion (12). The locking member includes a bolt (14) passing through the through hole (13) and the connecting portion (12), and also includes a nut (15) screwed to the end of the bolt (14).

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