Butt joint device for fuel gas corrugated pipes

Abstract

The utility model discloses a fuel gas corrugated pipe butt joint device which comprises a first connector pipe, a second connector pipe and a locking mechanism, a butt joint locking structure of a corrugated pipe is improved in the scheme, a sleeve is sleeved at the head end of the first connector pipe, and a second guide groove in sliding fit with a second guide column is formed in the peripheral wall of the first connector pipe so that the sleeve can be conveniently installed in a sleeved mode. After the sleeve moves in place, the sleeve is rotated by applying a force to the lock column, the guide column I is correspondingly rotated into the lock groove I, the guide column II is correspondingly rotated into the lock groove II, and the joint pipe II and the joint pipe I are locked in the axial direction under the matching; the rotary column is rotated and moves downwards to enable the two ends of the rotary column to abut against the hole wall of the lock hole so as to limit resetting of the lock column, butt joint is completed, butt joint installation can be completed through direct insertion butt joint and small-amplitude rotation in the mode, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe body butt joint devices, in particular to a butt joint device for a gas bellows. Background Art

[0002] In the actual installation process, gas bellows often need to be connected through multiple sections of pipe body through joints to form a long pipe. The common joints are the ends and locked by nuts. In this way, the nut needs to be rotated multiple times to complete the locking. In some installation environments, it is not convenient to perform multiple turns of rotation, and the threaded connection is prone to rust, which needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application document discloses a docking device for a gas bellows, comprising a joint pipe 1, a joint pipe 2 and a locking mechanism, wherein a first end of the joint pipe is plugged into and matched with a pipe opening at a first end of the joint pipe 2, the locking mechanism comprises a guide column 1, a guide column 2, a rotating column, a locking column and a sleeve, a sleeve is sleeved at a first end of the joint pipe, a guide column 1 is arranged at a peripheral wall of the first end of the sleeve and a guide column 2 is arranged at an inner wall of a rear end of the sleeve, a guide groove 1 is arranged along an axial direction on the pipe wall of the first end of the joint pipe 2 for sliding cooperation with the guide column 1 and a guide groove 1 is arranged along a circumferential direction at a rear end of the guide groove 1 A lock groove 1 is provided, a guide groove 2 which is slidably matched with the guide column 2 is axially provided on a peripheral wall at a first end of the joint pipe, and a lock groove 2 is circumferentially provided at the tail end of the guide groove 2, a lock column is provided at the tail end of the sleeve, and the lock column is located in a lock hole circumferentially provided on a peripheral wall of the joint pipe, and a rotating column is connected with an axial sliding connection at the head end of the lock column, and when the sleeve is inserted into the joint pipe 2, the lock column is forced to rotate the sleeve so that the guide column 1 and the guide column 2 move from the corresponding guide groove into the corresponding lock groove, and the rotating column is rotated and moved downward so that the end of the rotating column abuts against the wall of the lock hole to lock it.

[0005] The present invention improves the docking and locking structure of the corrugated pipe. A sleeve is sleeved at the head end of the joint pipe one, and a guide groove two is formed on the peripheral wall of the joint pipe to slide with the guide column two to facilitate the sleeve installation. The guide column one of the sleeve corresponds to the guide groove one and then is plugged in. After moving into place, the locking column is forced to rotate the sleeve, so that the guide column one is turned into the locking groove one and the guide column two is turned into the locking groove two. In cooperation, the joint pipe two and the joint pipe one are locked in the axial direction, and the rotating column is rotated and moved downward so that the two ends of the rotating column respectively abut against the hole walls of the locking hole to limit the reset of the locking column, and the docking is completed. In this way, the docking is directly plugged in and the docking installation can be completed by a small rotation, which is convenient for operation.

[0006] Furthermore, the tube wall at the first end of the joint pipe is stepped, the first end of the sleeve abuts against the interface of the tube wall at the first end of the joint pipe and a sealing ring is arranged between the two. The formed step surface helps the sleeve to abut, and the cooperation with the sealing ring helps to improve the sealing performance.

[0007] Furthermore, the tube wall of the sleeve is stepped, the first end face of the joint pipe abuts against the tube wall interface of the sleeve and a sealing ring 2 is arranged between the two, and the formed step surface helps the abutment between the tube wall of the sleeve and the joint pipe 1, and the cooperation with the sealing ring 2 helps to improve the sealing performance.

[0008] Furthermore, the joint pipe is T-shaped and a lock hole is arranged on the peripheral wall of its transverse end. A notch for the lock column to enter and exit is arranged on the hole wall of the lock hole, so that the lock column can enter the lock hole from the notch when the sleeve is fitted, thereby facilitating assembly and forming.

[0009] Furthermore, a rotating column is radially arranged at the head end of the lock column, so as to facilitate the downward movement of the rotating column and to abut against the wall of the lock hole at both ends to lock the lock column.

[0010] Furthermore, the end of the rotating column is sleeved on the locking column, and the sleeved structure facilitates the upward and downward movement of the rotating column.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model improves the docking structure between the joint pipes, and only a small rotation is required to complete the locking after direct docking, which is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 is a schematic cross-sectional structure diagram of the docking device of the gas bellows in Example 1;

[0015] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Connector pipe one; 2. Connector pipe two; 3. Sleeve; 4. Sealing ring one; 5. Sealing ring two; 6. Guide groove two; 7. Guide groove one; 8. Notch; 9. Rotating column; 10. Locking column; 11. Locking hole; 12. Locking groove two; 13. Guide column two; 14. Raised ridge; 15. Locking groove one; 16. Guide column one. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 , Figure 2 As shown, in this example, a docking device for a gas bellows includes a joint pipe 1, a joint pipe 2 and a locking mechanism. The joint pipe 1 and the joint pipe 2 are both cylindrical, wherein the axial cross-section of the joint pipe 1 is T-shaped, and the head end of the joint pipe 1, i.e. the longitudinal end, is inserted into the head end pipe opening of the joint pipe 2, and the two are plug-fitted.

[0021] In this example, the locking mechanism includes a guide column 16, a guide column 2 13, a rotating column 9, a locking column 10, and a sleeve 3, wherein the first end of the joint pipe 1 is sleeved with the sleeve 3, the tube wall of the sleeve 3 is a two-stage stepped type, the first end face of the joint pipe 1 is in contact with the interface of the tube wall of the sleeve 3, and a sealing ring 2 5 is arranged between the two, such as a concentrically formed annular groove at the first end face of the joint pipe 1, and a corresponding annular groove is also formed at the interface of the inner wall of the sleeve, and a sealing ring 2 5 is pre-placed in one of the annular grooves, when the sleeve 3 is sleeved on the first end of the joint pipe 1, the two annular grooves merge to form a accommodating space for the sealing ring 2 5, which helps to improve the sealing performance. In addition, an elastic layer can be coated on the cavity wall of the sleeve 3, such as a common elastic material, and the elastic layer can be in contact with the peripheral wall of the first end of the joint pipe, which helps to improve the sealing performance.

[0022] In this example, the tube wall at the head end of the joint pipe 2 is also a two-stage stepped type. The head end of the sleeve 3 abuts against the interface of the tube wall at the head end of the joint pipe 2 and a sealing ring 4 is arranged between the two. The installation of the sealing ring 4 can refer to the installation method of the sealing ring 2. Multiple sealing rings 1 can be concentrically arranged at the abutting surface between the head end of the sleeve and the tube wall of the joint pipe 2, which helps to improve the sealing performance.

[0023] In this example, a guide column 16 is radially protruded from the peripheral wall of the head end of the sleeve 3, a guide column 13 is radially protruded from the inner wall of the tail end of the sleeve 3, a guide groove 7 is axially formed on the tube wall of the head end of the joint tube 2 for slidingly matching with the guide column 16, and a locking groove 15 is formed along the circumferential direction on the groove wall on one side of the tail end of the guide groove 7.

[0024] The peripheral wall of the head end of the joint pipe 1 is formed with a guide groove 26 that is slidably matched with the guide column 2 13 along the axial direction, and the groove wall of one side of the tail end of the guide groove 26 is formed with a groove along the circumferential direction to form a lock groove 2 12. A protrusion is formed along the axial direction at the tail end of the sleeve 3, and a column is formed in the radial direction outward at the protrusion. The column is the lock column 10. Of course, the column can also be formed independently and fixed at the protrusion. A groove is formed on the peripheral wall of the tail end, that is, the horizontal end of the joint pipe 1, that is, the lock hole 11. A notch 8 is formed on the hole wall of the lock hole 11 for the lock column to enter. During the sleeve fitting process, the lock column enters the lock hole from the notch. A rotating column 9 is installed at the head end of the lock column 10 along its radial direction. The rotating column is an arc-shaped column. The curvature of the rotating column is consistent with the curvature of the peripheral wall of the joint pipe. A hole is formed at one end of the rotating column, and the head end of the lock column extends into the hole to form a fitting relationship.

[0025] When in use, after the guide column two corresponds to the guide groove two, the sleeve is put on the head end of the joint tube one, the locking column is in the locking hole, and after the guide groove one corresponds to the guide column one, the joint tube one and the joint tube two are plugged together, and then force is applied to the rotating column to move the locking column along the locking hole (space for left and right movement should be reserved at the notch of the column one), and the sleeve is rotated synchronously, and the guide column one and the guide column two enter the corresponding locking grooves from the corresponding guide grooves, so that the axial separation of the joint tube one and the joint tube two is restricted, and then the rotating column is rotated to make its length extension direction consistent with the length extension direction of the locking hole, and the rotating column is pressed down so that the two ends of the rotating column respectively abut against the relative hole walls of the locking hole to limit the resetting of the locking column, and the locking docking of the joint tube one and the joint tube two is completed.

[0026] In addition, a convex ridge 14 may be formed on the peripheral wall of the rear end of the joint pipe 2 to facilitate gripping.

[0027] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A gas bellows docking device, comprising a first joint pipe, a second joint pipe and a locking mechanism, characterized in that: The locking pin is located in a locking hole arranged on a peripheral wall of the first and second guide posts, and the ...

2. A gas bellows docking device as claimed in claim 1, characterized in that: The pipe wall at the first end of the second joint pipe is stepped, the first end of the sleeve abuts against the interface of the pipe wall at the first end of the second joint pipe, and a sealing ring is arranged between the two.

3. A gas bellows docking device as claimed in claim 2, characterized in that: The tube wall of the sleeve is stepped, and a first end surface of the joint pipe abuts against an interface of the tube wall of the sleeve, and a second sealing ring is arranged between the two.

4. A gas bellows docking device as claimed in claim 1, characterized in that: The joint pipe is T-shaped and a lock hole is arranged at the peripheral wall of the horizontal end thereof, and a notch for the lock column to enter and exit is arranged at the hole wall of the lock hole.

5. A gas bellows docking device as claimed in claim 1, characterized in that: A rotating column is radially arranged at the head end of the locking column.

6. A gas bellows docking device as claimed in claim 5, characterized in that: The end of the rotating column is sleeved on the locking column.

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