A connecting pipe structure for a two-stage centrifugal air compressor

Abstract

This utility model provides a connecting pipe structure for a two-stage centrifugal air compressor, relating to the field of air compressor connecting pipe technology. It includes a fixing component, comprising a mounting base installed on the outer surface of a first connecting pipe, a fixing frame fixed to the top of the mounting base, and a fixing block on the side of the fixing frame. A sliding groove is formed on the outer surface of the second connecting pipe. The mounting base provides support for the fixing frame, and the fixing block, in conjunction with the sliding groove, enables quick assembly and disassembly of the first and second connecting pipes. The structure itself allows for rapid connection without the need for external fixing components. A sealing ring fixed to the side of the first connecting pipe fills the gap at the connection point between the inner walls of the first and second connecting pipes during installation, preventing stress from affecting the position of the first and second connecting pipes when airflow contacts their inner walls.

Description

Technical Field

[0001] This utility model relates to the field of air compressor connecting pipe technology, and in particular to a connecting pipe structure for a two-stage centrifugal air compressor. Background Technology

[0002] The connecting pipe structure of a two-stage centrifugal air compressor is used to connect the components of each stage of the air compressor. Its main function is to guide the smooth flow of compressed air between different stages, ensure the sealing and stability of airflow transmission, reduce pressure loss, buffer vibration, reduce noise, and ensure the efficient and reliable operation of the two-stage centrifugal air compressor. It is a key component for achieving continuous air compression.

[0003] In the prior art, utility model application number CN202120380481.9 provides a gas connection pipe for a two-stage centrifugal air compressor. The gas connection pipe connects the primary and secondary compression devices at both ends of the two-stage centrifugal air compressor. The gas connection pipe includes a primary connection section and a secondary connection section. A fixing device is provided on the outside of the secondary connection section. The primary and secondary connection sections are connected by a connecting section. The connecting section includes a horizontal section and a bending section. The comparative case compresses the footprint of the connection pipe by providing a bending part with an elliptical cross section, reducing the space occupied by the air compressor. A quick fixing device is provided, which achieves multi-point fixing through multiple snap-fit ​​quick-connectors, and then uniformly locks it with a locking ring to achieve flexible and quick fixing.

[0004] However, in actual use, the applicant found that when the connecting pipe is fixed with an external snap-fit ​​structure, due to the structural characteristics, when the airflow collides with the inner wall of the pipe, the connection will inevitably have a certain displacement, which will cause the airflow to overflow. Therefore, this application provides a connecting pipe structure for a two-stage centrifugal air compressor to meet the requirements. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a connecting pipe structure for a two-stage centrifugal air compressor.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a connecting pipe structure for a two-stage centrifugal air compressor, comprising a first connecting pipe and a second connecting pipe disposed at one end of the first connecting pipe, and further comprising:

[0007] The fixing component includes a mounting base installed on the outer surface of the first connecting pipe, a fixing frame fixed on the top of the mounting base, a fixing block provided on the side of the fixing frame, and a sliding groove opened on the outer surface of the second connecting pipe.

[0008] An auxiliary sealing assembly includes a sealing ball disposed in the inner cavity of the second connecting pipe, and a sealing ring is sleeved on the side of the sealing ball.

[0009] Furthermore, a connecting rod is fixed to the side of the fixing frame, and the end of the connecting rod away from the fixing frame is fixed to the side of the fixing block. A protective shell is fixed to the outer surface of the second connecting tube.

[0010] The technical effects of adopting the above technical solution are: by setting a connecting rod, the fixing block can be supported; by setting a protective shell, the connection between the outer surfaces of the first connecting pipe and the second connecting pipe can be protected.

[0011] Furthermore, a spring clip is fixed to the side of the inner cavity of the protective shell.

[0012] The technical effect of adopting the above technical solution is that by setting a spring, the position of the fixed block can be limited.

[0013] Furthermore, a touch plate is fixed to the side of the spring.

[0014] The technical effect of adopting the above technical solution is that by setting a touch plate, the stress generated by contact with the fixed block can be transferred to the spring.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] By setting up the mounting base, the mounting bracket can be supported. By setting up the fixing block, the sliding groove can be used to achieve the effect of quick assembly and disassembly of the first and second connecting pipes. The quick connection can be completed by relying on its own structure, without the need for external fixing components. By fixing the sealing ring to the side of the first connecting pipe, the gap at the connection between the inner walls of the first and second connecting pipes can be filled at the same time as the installation is completed, so as to avoid the stress generated when the airflow comes into contact with the inner walls of the first and second connecting pipes, which would affect the position of the first and second connecting pipes. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a connecting pipe structure for a two-stage centrifugal air compressor provided by this utility model;

[0018] Figure 2 This utility model provides an internal structural diagram of a connecting pipe structure for a two-stage centrifugal air compressor.

[0019] Figure 3 A cross-sectional view of a connecting pipe structure fixing assembly for a two-stage centrifugal air compressor provided by this utility model;

[0020] Figure 4 This is a cross-sectional structural schematic diagram of an auxiliary sealing component for a connecting pipe structure of a two-stage centrifugal air compressor provided by this utility model.

[0021] Legend:

[0022] 1. First connecting pipe; 11. Second connecting pipe;

[0023] 2. Fixing components; 21. Mounting base; 22. Fixing bracket; 23. Connecting rod; 24. Fixing block; 25. Slide groove; 26. Contact plate; 27. Protective shell; 28. Spring; 29. ​​Sealing ring;

[0024] 3. Auxiliary sealing components; 31. Sealing ball; 32. Sealing ring; 33. Groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a connecting pipe structure for a two-stage centrifugal air compressor, including a first connecting pipe 1 and a second connecting pipe 11 disposed at one end of the first connecting pipe 1, and further including:

[0027] The fixing component 2 includes a mounting base 21 installed on the outer surface of the first connecting pipe 1, a fixing frame 22 fixed on the top of the mounting base 21, a fixing block 24 provided on the side of the fixing frame 22, and a sliding groove 25 opened on the outer surface of the second connecting pipe 11.

[0028] The auxiliary sealing assembly 3 includes a sealing ball 31 disposed in the inner cavity of the second connecting pipe 11, a sealing ring 32 sleeved on the side of the sealing ball 31, a connecting rod 23 fixed to the side of the fixing frame 22, the end of the connecting rod 23 away from the fixing frame 22 being fixed to the side of the fixing block 24, a protective shell 27 fixed to the outer surface of the second connecting pipe 11, a spring piece 28 fixed to the side of the inner cavity of the protective shell 27, a touch plate 26 fixed to the side of the spring piece 28, a sealing ring 29 fixed to the end of the first connecting pipe 1 away from the fixing frame 22, and a sliding groove 25 with a semi-spiral structure. The inner cavity of the sliding groove 25 also has an additional slot for engaging with the fixing block 24. Through the cooperation of the mounting base 21 and the fixing frame 22, the positions of the connecting rod 23 and the fixing block 24 can be fixed and supported. In use, by manually pushing the first connecting pipe 1 into the inner cavity of the second connecting pipe 11, the fixing block 24 can be moved along the inner cavity of the sliding groove 25. When the groove 25 moves to a certain position, the side of the groove 25 contacts the side of the touch plate 26, which causes the spring 28 to be compressed. At this time, the fixing block 24 continues to move, and the spring 28 releases stress, which causes the fixing block 24 to enter the groove provided in the inner cavity of the groove 25. By setting the protective shell 27, the snap-fit ​​joint on the outer surface of the first connecting pipe 1 and the second connecting pipe 11 can be protected. Similarly, when it is necessary to disassemble the first connecting pipe 1 and the second connecting pipe 11, push the first connecting pipe 1 again, which causes the spring 28 to be compressed. Then twist the first connecting pipe 1 counterclockwise, which causes the first connecting pipe 1 and the second connecting pipe 11 to be disconnected. Thus, the first connecting pipe 1 and the second connecting pipe 11 can be quickly disassembled and assembled without relying on the external fixing component 2. By setting the sealing ring 29, the inner wall connection of the first connecting pipe 1 and the second connecting pipe 11 can be filled and sealed to prevent airflow from passing through the gap and causing overflow.

[0029] Furthermore, such as Figure 3 and Figure 4 As shown: The inner cavity of the second connecting pipe 11 is provided with a groove 33. By providing the groove 33, the sealing ball 31 and the sealing ring 32 can be installed, and the position of the sealing ball 31 and the sealing ring 32 can be limited. This prevents the position of the sealing ball 31 and the sealing ring 32 from shifting during the connection of the first connecting pipe 1 and the second connecting pipe 11. Through the cooperation of the sealing ball 31 and the sealing ring 32, the sealing ring 29 can be used to perform secondary isolation of the airflow, preventing the airflow from overflowing and affecting the performance of the first connecting pipe 1 and the second connecting pipe 11.

[0030] like Figure 1-4 As shown:

[0031] In use: The operator manually pushes the first connecting pipe 1 into the inner cavity of the second connecting pipe 11, causing the fixing block 24 to move clockwise along the inner cavity of the slide groove 25. When the fixing block 24 moves to a certain position, the side of the fixing block 24 contacts the side of the touch plate 26, causing the spring 28 to compress. At this time, the fixing block 24 continues to move, and the spring 28 releases stress, thereby causing the fixing block 24 to engage with the inner cavity of the slide groove 25, thus achieving the effect of quick connection between the first connecting pipe 1 and the second connecting pipe 11. After completion, the sealing ball 31, sealing ring 32 and sealing ring 29 cooperate to seal the connection between the inner and outer walls of the first connecting pipe 1 and the second connecting pipe 11, preventing airflow from blowing out through the connection. Similarly, when it is necessary to disassemble the first connecting pipe 1 and the second connecting pipe 11, push the first connecting pipe 1 forward again to compress the spring 28, and then twist the first connecting pipe 1 counterclockwise to disengage the fixing block 24 from the inner cavity of the slide groove 25, thereby achieving the effect of disconnecting the first connecting pipe 1 and the second connecting pipe 11.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A connecting pipe structure for a two-stage centrifugal air compressor, comprising a first connecting pipe (1) and a second connecting pipe (11) disposed at one end of the first connecting pipe (1), characterized in that, Also includes: The fixing component (2) includes a mounting base (21) installed on the outer surface of the first connecting pipe (1), a fixing frame (22) is fixed on the top of the mounting base (21), a fixing block (24) is provided on the side of the fixing frame (22), and a sliding groove (25) is provided on the outer surface of the second connecting pipe (11). The auxiliary sealing assembly (3) includes a sealing ball (31) disposed in the inner cavity of the second connecting pipe (11), and a sealing ring (32) is sleeved on the side of the sealing ball (31).

2. The connecting pipe structure for a two-stage centrifugal air compressor according to claim 1, characterized in that, A connecting rod (23) is fixed to the side of the fixing frame (22), and the end of the connecting rod (23) away from the fixing frame (22) is fixed to the side of the fixing block (24). A protective shell (27) is fixed to the outer surface of the second connecting tube (11).

3. The connecting pipe structure for a two-stage centrifugal air compressor according to claim 2, characterized in that, A spring clip (28) is fixed to the side of the inner cavity of the protective shell (27).

4. The connecting pipe structure for a two-stage centrifugal air compressor according to claim 3, characterized in that, A touch plate (26) is fixed to the side of the spring (28).

5. The connecting pipe structure for a two-stage centrifugal air compressor according to claim 1, characterized in that, A sealing ring (29) is fixed at the end of the first connecting pipe (1) away from the fixing frame (22).

6. The connecting pipe structure for a two-stage centrifugal air compressor according to claim 1, characterized in that, The inner cavity of the second connecting pipe (11) is provided with a groove (33).

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