Guide cylinder structure on corrugated pipe expansion joint

Abstract

The utility model relates to the technical field of flow guide cylinders, in particular to a flow guide cylinder structure on a corrugated pipe expansion joint, which comprises a pipe fitting, a plurality of circumferentially arranged flow guide holes arranged along the arc surface of the pipe fitting, a plurality of mounting ring pieces arranged in the pipe fitting and corresponding to the flow guide holes in position, flow guide impellers arranged in the mounting ring pieces, and flow guide plates arranged on the flow guide impellers. And the flow guide impeller is movably connected with the flow guide hole. According to the scheme, the mounting ring piece corresponding to the flow guide hole in position is arranged in the flow guide cylinder, the mounting ring piece can be used for mounting the flow guide impeller, and in the process that part of water solution carrying impurities flows into the flow guide hole from the mounting ring piece, the flow impact force of the water solution can drive the flow guide impeller to rotate; and the flow guide impeller rotates to stir the water solution in the mounting ring piece and the flow guide holes and disturb particles in the mounting ring piece and the flow guide holes, so that static accumulation of the particles in the flow guide holes is avoided, and the working stability of the flow guide holes is improved.

Description

Technical Field

[0001] This utility model relates to the field of guide tube technology, and in particular to a guide tube structure on a bellows expansion joint. Background Technology

[0002] The flow guide tube is the inner lining of a bellows expansion joint. It serves to guide the flow of medium within the expansion joint, making the flow more stable and reducing structural vibrations caused by changes in fluid flow characteristics when high-speed fluid flows through the bellows. It also protects the bellows. In expansion joints with strong scouring forces, the flow guide tube can prevent scouring and increase wear resistance, protecting the bellows from direct scouring by the medium and extending the service life of the expansion joint. To maintain pressure balance between the flow guide tube and the bellows, flow guide holes are formed on the surface of the flow guide tube. Over time, a large amount of particulate impurities accumulate inside these holes, reducing the diameter of the orifice through which the solution flows. Furthermore, if impurities are not cleaned from the flow guide holes in a timely manner, the orifices will become bent and blocked over time, reducing their effectiveness. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a guide tube structure for a bellows expansion joint.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a guide tube structure on a corrugated pipe expansion joint, including a pipe fitting, with multiple circumferentially arranged guide holes opened along the arc surface of the pipe fitting, multiple mounting rings corresponding to the positions of the guide holes inside the pipe fitting, and a guide impeller inside the mounting ring, with the guide impeller movably connected to the guide holes.

[0005] Preferably, an installation shaft is mounted on the surface of the guide impeller, a fixing block is installed in the guide hole, an installation block is connected to one side of the fixing block, an installation groove is opened on the surface of the installation block, a sealed bearing is tightly fitted into the installation groove, and one end of the installation shaft is tightly fitted into the inner ring of the sealed bearing.

[0006] Preferably, the surface of the guide impeller is fitted with an annular component, which surrounds the outside of the mounting block. Two annular slides are fitted inside the annular component. Two O-rings are fixedly sleeved on the outside of the mounting block, and the arc surface of the O-rings extends into the groove of the annular slide.

[0007] Preferably, a limiting ring is provided below the annular slide member, the limiting ring being fitted inside the annular member and surrounding the outside of the mounting block.

[0008] Preferably, the surface of the fixing block is provided with a second screw hole, and a stud is inserted into the internal thread of the second screw hole, with one end of the stud mounted on the surface of the mounting block.

[0009] Preferably, one end of the pipe fitting is equipped with an annular wing plate, and the side of the annular wing plate is provided with a plurality of first screw holes.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This solution involves installing mounting rings inside the guide tube that correspond to the positions of the guide holes. These mounting rings allow for the installation of the guide impeller. As some of the aqueous solution, carrying impurities, flows into the guide holes from the mounting rings, the impact force of the flowing aqueous solution drives the guide impeller to rotate. The rotation of the guide impeller agitates the mounting rings and the aqueous solution in the guide holes, disturbing the mounting rings and neutralizing the particles in the guide holes. This prevents the particles from statically accumulating in the guide holes and improves the stability of the guide hole's operation. Attached Figure Description

[0012] Figure 1 This is an isometric view of a guide tube structure on a bellows expansion joint according to the present invention;

[0013] Figure 2 This is a cross-sectional view of a guide tube structure on a bellows expansion joint according to the present invention;

[0014] Figure 3 This is a schematic diagram of the connection structure between the guide impeller and the fixing block of a guide tube structure on a bellows expansion joint according to this utility model.

[0015] Figure 4 This is a cross-sectional view of the connection between the guide impeller and the fixing block in the guide tube structure of a bellows expansion joint according to this utility model;

[0016] Figure 5 This is a schematic diagram of the fixing block structure of the guide tube structure on the bellows expansion joint of this utility model.

[0017] In the figure: 1. Pipe fitting; 2. Annular wing plate; 3. First screw hole; 4. Guide hole; 5. Fixing block; 6. Mounting block; 7. Annular part; 8. Guide impeller; 9. Annular slide; 10. O-ring seal; 11. Limiting ring; 12. Second screw hole; 13. Stud; 14. Sealing bearing; 15. Mounting shaft; 16. Mounting groove; 17. Mounting ring. Detailed Implementation

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figure 1-5The diagram illustrates a flow guide structure on a bellows expansion joint, comprising a pipe fitting 1. Multiple circumferentially arranged flow guide holes 4 are formed along the arc surface of the pipe fitting 1. The pipe fitting 1 contains multiple mounting rings 17 corresponding to the positions of the flow guide holes 4. Each mounting ring 17 contains a flow guide impeller 8, which is movably connected to the flow guide holes 4. During the process of some aqueous solution carrying impurities flowing from the mounting rings 17 into the flow guide holes 4, the impact force of the flowing aqueous solution drives the flow guide impeller 8 to rotate. The rotating impeller 8 agitates the aqueous solution in the mounting rings 17 and the flow guide holes 4, disturbing the particles in the mounting rings 17 and the flow guide holes 4, thus preventing static accumulation of particles in the flow guide holes 4. Simultaneously, the mounting rings 17 protrude from the inside of the pipe fitting 1, blocking some impurities in the aqueous solution from the outside of the mounting rings 17, reducing the amount of impurities flowing into the mounting rings 17 and the flow guide holes 4, and protecting the stable rotation of the flow guide impeller 8.

[0020] An installation shaft 15 is mounted on the surface of the guide impeller 8. A fixing block 5 is installed in the guide hole 4. An installation block 6 is connected to one side of the fixing block 5. An installation groove 16 is opened on the surface of the installation block 6. A sealed bearing 14 is tightly inserted into the installation groove 16. One end of the installation shaft 15 is tightly inserted into the inner ring of the sealed bearing 14. The sealed bearing 14 can be used to install the installation shaft 15. When the guide impeller 8 rotates, it drives the installation shaft 15 to drive the inner ring of the sealed bearing 14 to rotate. At the same time, the sealed bearing 14 can also prevent particulate impurities in the solution from affecting the rotation of the installation shaft 15 in the sealed bearing 14.

[0021] An annular component 7 is mounted on the surface of the guide impeller 8, surrounding the outer side of the mounting block 6. Two annular sliding components 9 are matched and installed inside the annular component 7. Two O-rings 10 are fixedly sleeved on the outside of the mounting block 6. The arc surface of the O-rings 10 extends into the groove of the annular sliding component 9. The arrangement of the O-rings 10 and the annular sliding component 9 facilitates the rotation of the annular component 7 on the mounting block 6, and at the same time seals the gap between the annular component 7 and the mounting block 6. This facilitates and reduces the entry of particulate impurities between the mounting shaft 15 and the sealing bearing 14, which would cause wear. It also improves the stability of the guide impeller 8 under force and rotation, and provides protection for the mounting shaft 15 and the sealing bearing 14.

[0022] A limiting ring 11 is provided below the annular slide 9. The limiting ring 11 is matched and installed inside the annular part 7. The annular part 7 surrounds the outside of the mounting block 6. The setting of the limiting ring 11 means that the gap between the limiting ring 11 and the mounting block 6 is smaller than the gap between the annular part 7 and the mounting block 6, which reduces the amount of particulate impurities entering the annular part 7 and further protects the mounting shaft 15 and the sealed bearing 14.

[0023] The surface of the fixing block 5 is provided with a second screw hole 12, and a stud 13 is inserted into the internal thread of the second screw hole 12. One end of the stud 13 is installed on the surface of the mounting block 6. The second screw hole 12 and the stud 13 are connected by threads, which improves the stability of the mounting block 6 on the fixing block 5, and at the same time facilitates the removal of the mounting block 6 from the fixing block 5, making it easier for the staff to install and remove the guide impeller 8 in the guide tube.

[0024] One end of the pipe fitting 1 is equipped with an annular wing plate 2. The side of the annular wing plate 2 is provided with multiple first screw holes 3. The annular wing plate 2 and the pipe fitting 1 are integrally formed. The side of the annular wing plate 2 contacts the end of the corrugated pipe and is connected to the third screw hole at the end of the corrugated pipe by screws passing through the first screw holes 3, which is used to fix the position of the annular wing plate 2 and improve the stability of the connection between the pipe fitting 1 and the annular wing plate 2.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow guide structure on a bellows expansion joint, comprising a pipe fitting (1), wherein a plurality of circumferentially arranged flow guide holes (4) are formed along the arc surface of the pipe fitting (1), characterized in that, The pipe fitting (1) has multiple mounting rings (17) inside that correspond to the positions of the guide holes (4). The mounting rings (17) have guide impellers (8) inside, and the guide impellers (8) are movably connected to the guide holes (4).

2. The guide tube structure on a bellows expansion joint according to claim 1, characterized in that, The impeller (8) is mounted with a mounting shaft (15), a fixing block (5) is installed in the guide hole (4), a mounting block (6) is connected to one side of the fixing block (5), a mounting groove (16) is opened on the surface of the mounting block (6), a sealed bearing (14) is tightly inserted in the mounting groove (16), and one end of the mounting shaft (15) is tightly inserted in the inner ring of the sealed bearing (14).

3. The guide tube structure on a bellows expansion joint according to claim 2, characterized in that, The surface of the guide impeller (8) is fitted with an annular part (7), which surrounds the outside of the mounting block (6). Two annular slides (9) are matched and installed inside the annular part (7). Two O-rings (10) are fixedly sleeved on the outside of the mounting block (6), and the arc surface of the O-rings (10) extends into the groove of the annular slide (9).

4. The guide tube structure on a bellows expansion joint according to claim 3, characterized in that, A limiting ring (11) is provided below the annular slide (9), and the limiting ring (11) is matched and installed inside the annular part (7), which surrounds the outside of the mounting block (6).

5. The guide tube structure on a bellows expansion joint according to claim 2, characterized in that, The surface of the fixing block (5) is provided with a second screw hole (12), and a stud (13) is inserted into the internal thread of the second screw hole (12). One end of the stud (13) is installed on the surface of the mounting block (6).

6. The guide tube structure on a bellows expansion joint according to claim 1, characterized in that, One end of the pipe fitting (1) is equipped with an annular wing plate (2), and the side of the annular wing plate (2) is provided with a plurality of first screw holes (3).

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