Corrugated pipe with pumping speed changing function

Abstract

The utility model relates to a corrugated pipe with a pumping speed changing function, which comprises two corrugated pipe bodies, the opposite ends of the two corrugated pipe bodies are connected through an expanding pipe body, and the inner diameter of the expanding pipe body is larger than that of the corrugated pipe bodies. The corrugated pipe has the advantages that the expanding pipe body is additionally arranged in the middle of the corrugated pipe body, and the state of fluid is influenced and changed in the pipe, so that the speed of the fluid in the corrugated pipe is reduced or increased, the working efficiency of the corrugated pipe is improved, and the service life of the corrugated pipe is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of bellows, and in particular relates to a bellows with a pumping speed changing function. Background Art

[0002] Bellows is a pipe material used to transport gas, liquid or other fluids. It consists of a series of corrugated metal or non-metallic shells. Bellows has the characteristics of bending, flexibility and compressibility, and can adapt to different structural and shape requirements. Therefore, it is widely used in many industrial fields, such as machinery, aviation, chemical industry, light industry, medical treatment and construction. In addition, bellows also have the characteristics of vibration absorption, vibration isolation and buffering, which effectively control the key parameters such as pressure, flow and vibration in the fluid pipeline system.

[0003] Patent CN202363835U discloses a new type of corrugated tube, which includes a plurality of annular raised portions and a plurality of annular recessed portions, and the annular raised portions and the annular recessed portions are spaced apart from each other. The utility model corrugated tube is corrugated inside and outside, and has a good surface gloss, good mechanical load-bearing strength, and good softness. It can protect wires and cables from external wear and insulation, is not easy to deform, but can recover quickly, and has no damage itself. Put the wires and cables into it and use it with a hose connector.

[0004] In the above patent, when the fluid velocity in the bellows is too high, the bellows will collapse and deform due to the internal and external pressures, causing damage to the parts and cables in the bellows. Utility Model Content

[0005] The purpose of the utility model is to provide a bellows with a pumping speed changing function that can solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bellows with a pumping speed changing function comprises a bellows body. The bellows bodies are provided with two bellows bodies. The opposite ends of the two bellows bodies are connected by an expanded diameter body. The inner diameter of the expanded diameter body is larger than the inner diameter of the bellows body.

[0008] Furthermore, the expanded diameter tube body is a circular tube, and the axial ends of the expanded diameter tube body are connected to the corrugated tube body through conical tube bodies respectively.

[0009] Furthermore, the two corrugated tubes are of equal length.

[0010] Furthermore, the length of the expanded diameter tube body is shorter than the length of the corrugated tube body.

[0011] Furthermore, the wall thickness of the expanded tube body is equal to the wall thickness of the corrugated tube body.

[0012] Furthermore, the bellows body is a metal bellows body, the expanded diameter tube body and the conical tube body are connected as an integrated structure, and the conical tube body and the bellows body are connected by welding.

[0013] Furthermore, a connecting flange is provided at one end of each of the corrugated tube bodies away from the expanded diameter tube body.

[0014] Furthermore, an inner chamfer is provided at the outer end of the inner wall of each connecting flange.

[0015] Furthermore, the inner walls of the two conical tubes form an acute angle.

[0016] Furthermore, the axis center line of the corrugated tube body coincides with the axis center line of the expanded diameter tube body.

[0017] Compared with the existing technology, the advantages of the present application are: the present application is designed to add an expanded diameter tube body in the middle of the bellows body, which affects and changes the state of the fluid in the tube, thereby reducing or increasing the speed of the fluid in the bellows, and improving the working efficiency and service life of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the main structure of the bellows with the function of changing the pumping speed of the utility model;

[0019] Figure 2 This is a left view of the main structure of the bellows with the function of changing the pumping speed of the utility model;

[0020] Figure 3 for Figure 2 Side view of the bellows with changing pumping speed as a function of the central axis X.

[0021] In the figure, there are a corrugated pipe body 1, an expanded diameter pipe body 2, a conical pipe body 20, a connecting flange 10, and an inner chamfer 100. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] Embodiment 1

[0024] The bellows with the function of changing the pumping speed comprises a bellows body 1. There are two bellows bodies 1. The opposite ends of the two bellows bodies 1 are connected by an expanded diameter body 2. The inner diameter of the expanded diameter body 2 is greater than the inner diameter of the bellows body 1.

[0025] The function of the expanded tube body 2 is to expand or compress the fluid in the bellows, thereby achieving the effect of slowing down or accelerating the fluid. At the same time, the structure of the expanded tube body 2 is conducive to improving the overall structural strength of the bellows.

[0026] The expanded diameter tube body 2 is a circular tube, and the axial ends of the expanded diameter tube body 2 are connected to the corrugated tube body 1 through conical tube bodies 20 respectively.

[0027] The circular tube structure can evenly distribute the internal or external pressure, so that the pipeline system is evenly stressed, reducing stress concentration and improving the stability and durability of the system.

[0028] The function of the conical tube body 20 is to compress and expand the fluid inside the bellows body.

[0029] The two corrugated tube bodies 1 have the same length.

[0030] In order to ensure that the force on the bellows is stable during operation, the two bellows bodies 1 are designed to be of equal length.

[0031] The length of the expanded diameter tube body 2 is shorter than that of the corrugated tube body 1 .

[0032] The purpose of its design is to ensure the ductility and bending of the bellows and to ensure a certain spatial installation flexibility.

[0033] The wall thickness of the expanded tube body 2 is equal to the wall thickness of the corrugated tube body 1 .

[0034] Equal inner wall thickness can increase the overall strength of the bellows, making it better able to withstand internal or external pressure, reducing the risk of deformation or rupture, and improving the safety of the piping system.

[0035] The bellows body 1 is a metal bellows body, the enlarged diameter body 2 and the conical body 20 are connected as an integrated structure, and the conical body 20 and the bellows body 1 are connected by welding.

[0036] A connecting flange 10 is provided at one end of each corrugated pipe body 1 away from the expanded diameter pipe body 2 .

[0037] The connecting flange 10 is used to fix the bellows to other equipment.

[0038] In this embodiment, a connecting flange 10 is used as a connecting member.

[0039] An inner chamfer 100 is provided at the outer end of the inner wall of each connecting flange 10 .

[0040] The inner chamfer 100 is used for positioning with external equipment.

[0041] The inner walls of the two conical tubes 20 form an acute angle.

[0042] Its function is to transitionally connect the expanded diameter pipe body 2 with the corrugated pipe body 1 and compress the fluid in the pipe at the same time.

[0043] The axial center line of the corrugated tube body 1 coincides with the axial center line of the expanded diameter tube body 2.

[0044] Its function is to ensure the stable flow direction of the fluid inside the bellows.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A bellows with a pumping speed changing function, comprising a bellows body (1), characterized in that: There are two bellows bodies (1), and the facing ends of the two bellows bodies (1) are connected via an expanded diameter body (2), wherein the inner diameter of the expanded diameter body (2) is greater than the inner diameter of the bellows body (1).

2. The bellows with a pumping speed changing function according to claim 1, characterized in that: The expanded diameter tube body (2) is a circular tube, and the axial ends of the expanded diameter tube body (2) are respectively connected to the corrugated tube body (1) via conical tube bodies (20).

3. The bellows with a pumping speed changing function according to claim 1, characterized in that: The two corrugated tube bodies (1) are of equal length.

4. The bellows with a pumping speed changing function according to claim 3, characterized in that: The length of the expanded diameter tube body (2) is shorter than the length of the corrugated tube body (1).

5. The bellows with a pumping speed changing function according to claim 1, characterized in that: The wall thickness of the expanded diameter tube body (2) is equal to the wall thickness of the corrugated tube body (1).

6. The bellows with a pumping speed changing function according to claim 2, characterized in that: The bellows body (1) is a metal bellows body, the expanded diameter tube body (2) and the conical tube body (20) are connected to form an integrated structure, and the conical tube body (20) and the bellows body (1) are connected by welding.

7. The bellows with a pumping speed changing function according to claim 1, characterized in that: A connecting flange (10) is provided at one end of each of the corrugated pipe bodies (1) away from the expanded diameter pipe body (2).

8. The bellows with a pumping speed changing function according to claim 7, characterized in that: An inner chamfer (100) is provided at the outer end of the inner wall of each connecting flange (10).

9. The bellows with a pumping speed changing function according to claim 2, characterized in that: The inner walls of the two conical tubes (20) form an acute angle.

10. The bellows with a pumping speed changing function according to claim 1, characterized in that: The axial center line of the corrugated tube body (1) coincides with the axial center line of the expanded diameter tube body (2).

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