Magnetic fan for pipeline under pressure

Abstract

The magnetic fan comprises a driving source, a magnetic coupler and an air outlet mechanism, the air outlet mechanism comprises a connecting shell and an impeller shaft rotationally arranged in the connecting shell, and the magnetic coupler comprises a shell with an installation cavity and inner magnetic steel located in the installation cavity. The shell is detachably and fixedly connected with the connecting shell, the transmission shaft is located in the mounting cavity and connected with the inner magnetic steel, and a linkage structure for forming steering linkage of the transmission shaft and the impeller shaft is arranged between the transmission shaft and the impeller shaft. The limiting assembly limits axis separation of the transmission shaft and the impeller shaft and enables the linkage structure to be in a linkage state, and the limiting assembly is detachably and fixedly connected with the connecting shell and / or the shell. The utility model has the following advantages and effects: the internal magnetic steel can be conveniently disassembled and replaced, and the replacement cost is low.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to a magnetic fan for pressurized pipelines. Background Art

[0002] Fans generate airflow through the rotation of their blades, pushing air through the duct and enhancing air circulation. However, in pressurized pipelines, high-pressure and high-temperature media often flow inside, which can hinder the natural flow of air. In these situations, fans can provide additional power to ensure smooth air circulation in the duct, which is crucial for maintaining normal system operation.

[0003] To ensure long-term sealing reliability at the fan installation location, technicians in the field have applied magnetic fans to pressurized pipelines. In existing magnetic fan structures, the internal magnet is fixed to the impeller shaft. Damage to the internal magnet requires replacement of the entire impeller shaft, resulting in high maintenance and replacement costs. Furthermore, replacement requires disassembly of the magnetic coupler and fan, making this setup complex and cumbersome. This improvement was conceived to address these issues. Utility Model Content

[0004] The purpose of the utility model is to provide a magnetic blower for a pressurized pipeline, which can realize convenient disassembly and replacement of internal magnetic steel and has low replacement cost.

[0005] The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: A magnetic blower for a pressurized pipeline, comprising a driving source, a magnetic coupler and an air outlet mechanism, the air outlet mechanism comprising a connecting shell and an impeller shaft rotatably arranged in the connecting shell, the magnetic coupler comprising a shell having an installation cavity and an internal magnetic steel located in the installation cavity, the shell and the connecting shell are detachably and fixedly connected, and further comprising a limiting assembly and a transmission shaft located in the installation cavity and connected to the internal magnetic steel, a linkage structure constituting a steering linkage between the two is provided between the transmission shaft and the impeller shaft, the limiting assembly limits the separation of the axes of the transmission shaft and the impeller shaft and puts the linkage structure in a linkage state, the limiting assembly is detachably and fixedly connected to the connecting shell and / or the shell.

[0006] By adopting the above technical solution, a linkage structure is provided to form a steering linkage between the drive shaft and the impeller shaft, and the separation of the two is prevented by the action of the limit assembly, thereby forming a stable transmission between the two, so that the internal magnet of the magnetic coupler can drive the impeller shaft to rotate. When the internal magnet is to be disassembled and replaced, the magnetic coupler and the limit assembly are disassembled to separate the drive shaft and the impeller shaft, thereby disassembling and replacing the internal magnet. The above structure makes it possible to disassemble and replace the internal magnet without disassembling the air outlet mechanism and without wasting the entire impeller shaft, making disassembly more convenient and reducing replacement costs.

[0007] It is further configured as follows: the magnetic coupler further includes an isolation cover and a locking piece, the isolation cover is detachably fixed to the connection shell via the locking piece, and the limiting assembly is detachably fixed to the connection shell via the locking piece.

[0008] By adopting the above technical solution, the synchronous detachable fixation of the limit assembly is achieved through the original component structure of the magnetic coupler, so that the setting of the limit assembly does not need to add a separate fixing structure for detachable fixation of it, thereby achieving a simpler structure, reducing processing costs and making the structure more reliable.

[0009] It is further configured as follows: the limiting assembly includes a limiting ring fixedly arranged on the transmission shaft and a limiting cover sleeved on the transmission shaft, the limiting cover is formed with a limiting portion located on one side of the end face of the limiting ring and the positive projection of the limiting portion along the axial direction of the transmission shaft overlaps with the limiting ring.

[0010] By adopting the above technical solution, the limiting portion cooperates with the limiting ring to limit the transmission shaft and the impeller shaft along their axial directions, thereby preventing the two from separating.

[0011] It is further configured as follows: a plane bearing is provided between the limiting ring and the limiting portion, and a positioning groove for embedding the plane bearing is formed on the limiting portion.

[0012] By adopting the above technical solution, the flat bearing arrangement converts the sliding friction between the two into rolling friction, thereby reducing the relative wear between the two during use and extending the service life of the arrangement structure. The positioning groove is also provided to define the installation position of the flat bearing, achieving precise and stable installation.

[0013] It is further configured as follows: the linkage structure includes a linkage shaft and a linkage groove for the linkage shaft to be inserted into.

[0014] By adopting the above technical solution, the linkage shaft is inserted into the linkage groove to realize the steering linkage between the transmission shaft and the impeller shaft.

[0015] It is further configured as follows: the impeller shaft is rotatably sealed and arranged on the connecting shell to form a cooling cavity between the connecting shell and the impeller shaft; the connecting shell is provided with a coolant inlet and a coolant outlet communicating with the cooling cavity.

[0016] By adopting the above technical solution, the setting of the cooling chamber can cool the heat from the air outlet mechanism and the magnetic coupler, avoiding the occurrence of mechanism failure and reduced service life caused by the mutual conduction and superposition of heat between the air outlet mechanism and the magnetic coupler, thereby extending the overall service life of the fan.

[0017] It is further configured as follows: the magnetic coupler also includes an outer transmission sleeve and an outer magnetic steel arranged on the outer transmission sleeve, the outer transmission sleeve is plugged into the output shaft of the driving source, and the outer transmission sleeve is threadedly connected with a fastening bolt that is tightly pressed against the output shaft of the driving source.

[0018] By adopting the above technical solution, convenient disassembly and assembly between the two can be achieved through the above structure.

[0019] In summary, the present invention has the following beneficial effects: the present invention can realize convenient disassembly and replacement of the internal magnetic steel and the replacement cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a partial structural diagram of an embodiment.

[0022] In the figure: 1. Driving source; 21. Mounting cavity; 22. Housing; 23. Inner magnet; 24. Isolation cover; 25. Locking piece; 26. Outer transmission sleeve; 27. Outer magnet; 31. Connecting shell; 32. Impeller shaft; 33. Impeller; 34. Wheel shell; 4. Limiting assembly; 41. Limiting ring; 42. Limiting cover; 43. Limiting part; 5. Drive shaft; 6. Linkage structure; 61. Linkage shaft; 62. Linkage groove; 7. Plane bearing; 8. Positioning groove; 9. Cooling cavity; 10. Coolant inlet; 11. Coolant outlet; 12. Fastening bolts. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] refer to Figure 1 and Figure 2A magnetic blower for a pressurized pipeline includes a drive source 1, a magnetic coupler, and an air outlet mechanism. The air outlet mechanism includes a connecting shell 31 and an impeller shaft 32 that is sealed and rotatably arranged in the connecting shell 31. The magnetic coupler includes a shell 22 having a mounting cavity 21 and an internal magnet 23 located in the mounting cavity 21. The shell 22 is detachably fixedly connected to the connecting shell 31. Bolts pass through the shell 22 and the connecting shell 31 and are threadedly connected with nuts to achieve detachable fixation between the shell 22 and the connecting shell 31. It also includes a limit assembly 4 and a transmission shaft 5 located in the mounting cavity 21 and fixedly connected to the internal magnet 23. A linkage structure 6 is provided between the transmission shaft 5 and the impeller shaft 32 to form a rotational linkage between the two. The limit assembly 4 limits the separation of the axes of the transmission shaft 5 and the impeller shaft 32 and places the linkage structure 6 in a linkage state. The limit assembly 4 is detachably fixedly connected to the connecting shell 31 and / or the shell 22.

[0025] The magnetic coupler also includes an isolation cover 24 and a locking piece 25. The isolation cover 24 can be detachably fixed to the connecting shell 31 through the locking piece 25. The limiting assembly 4 can be detachably fixed to the connecting shell 31 through the locking piece 25. The isolation cover 24 covers the transmission shaft 5 and the inner magnetic steel 23.

[0026] The limiting assembly 4 includes a limiting ring 41 integrally mounted on the transmission shaft 5, and a limiting cover 42 fitted over the transmission shaft 5. The limiting cover 42 includes a limiting portion 43 positioned on one side of the end face of the limiting ring 41, with the limiting portion 43's orthographic projection along the axis of the transmission shaft 5 overlapping the limiting ring 41. The locking member 25 is a bolt that passes through the isolation cover 24 and the limiting cover 42 and then is threadedly connected to the connecting shell 31. A planar bearing 7 is positioned between the limiting ring 41 and the limiting portion 43. The limiting portion 43 includes a positioning groove 8 for the plane bearing 7 to fit into, with the other end of the plane bearing 7 abutting the limiting ring 41.

[0027] The linkage structure 6 includes a linkage shaft 61 integrally connected to the impeller shaft 32 and a linkage groove 62 provided on one end of the transmission shaft 5 facing the linkage shaft 61 and for inserting the linkage shaft 61. The linkage shaft 61 is hexagonal and the shape of the linkage groove 62 is adapted to the linkage shaft 61.

[0028] The impeller shaft 32 is rotatably sealed on the connecting shell 31 via a sealed bearing and a cooling chamber 9 is formed between the connecting shell 31 and the impeller shaft 32 . A coolant inlet 10 and a coolant outlet 11 communicating with the cooling chamber 9 are provided on the connecting shell 31 .

[0029] The magnetic coupler also includes an outer transmission sleeve 26 and an outer magnet 27 fixedly mounted on the outer transmission sleeve 26. The outer transmission sleeve 26 is plugged into the output shaft of the drive source 1. A fastening bolt 12 is threadedly connected to the outer transmission sleeve 26 and tightened against the output shaft of the drive source 1. The housing 22 is fixedly connected to the drive source 1 by bolts and nuts. The drive source 1 is a motor. The bolt passes through the drive source 1 and the housing 22 and is threadedly connected to the nut.

[0030] The air outlet mechanism also includes a wheel shell 34 and an impeller 33 . The wheel shell 34 is fixedly connected to the connecting shell 31 by bolts, that is, the bolts pass through the connecting shell 31 and are threadedly connected to the wheel shell 34 . The impeller shaft 32 extends into the wheel shell 34 and is fixedly connected to the impeller 33 .

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A magnetic blower for a pressurized pipeline, comprising a drive source (1), a magnetic coupler, and an air outlet mechanism, wherein the air outlet mechanism comprises a connecting shell (31) and an impeller shaft (32) rotatably disposed in the connecting shell (31), the magnetic coupler comprises a housing (22) having a mounting cavity (21) and an internal magnetic steel (23) located in the mounting cavity (21), the housing (22) and the connecting shell (31) being detachably fixedly connected, characterized in that: The invention also includes a limit assembly (4) and a transmission shaft (5) located in the installation cavity (21) and connected to the internal magnetic steel (23); a linkage structure (6) is provided between the transmission shaft (5) and the impeller shaft (32) to form a steering linkage between the two; the limit assembly (4) limits the separation of the axes of the transmission shaft (5) and the impeller shaft (32) and places the linkage structure (6) in a linkage state; the limit assembly (4) is detachably fixedly connected to the connecting shell (31) and / or the housing (22).

2. The magnetic blower for pressurized pipeline according to claim 1, characterized in that: The magnetic coupler further comprises an isolation cover (24) and a locking member (25); the isolation cover (24) is detachably fixed to the connection shell (31) via the locking member (25); and the limiting assembly (4) is detachably fixed to the connection shell (31) via the locking member (25).

3. The magnetic blower for pressurized pipeline according to claim 2, characterized in that: The limiting assembly (4) comprises a limiting ring (41) fixedly arranged on the transmission shaft (5) and a limiting cover (42) sleeved on the transmission shaft (5); a limiting portion (43) is formed on the limiting cover (42) and is located on one side of the end face of the limiting ring (41); and the orthographic projection of the limiting portion (43) along the axial direction of the transmission shaft (5) overlaps with the limiting ring (41).

4. The magnetic blower for pressurized pipeline according to claim 3, characterized in that: A plane bearing (7) is provided between the limiting ring (41) and the limiting portion (43), and a positioning groove (8) for embedding the plane bearing (7) is formed on the limiting portion (43).

5. The magnetic blower for pressurized pipeline according to claim 1, characterized in that: The linkage structure (6) comprises a linkage shaft (61) and a linkage groove (62) for the linkage shaft (61) to be inserted.

6. The magnetic blower for pressurized pipeline according to claim 1, characterized in that: The impeller shaft (32) is sealed and rotatably arranged on the connecting shell (31) and a cooling cavity (9) is formed between the connecting shell (31) and the impeller shaft (32). The connecting shell (31) is provided with a cooling liquid inlet (10) and a cooling liquid outlet (11) communicating with the cooling cavity (9).

7. The magnetic blower for pressurized pipeline according to claim 1, characterized in that: The magnetic coupler further comprises an outer transmission sleeve (26) and an outer magnetic steel (27) arranged on the outer transmission sleeve (26); the outer transmission sleeve (26) is plugged into the output shaft of the driving source (1); and a fastening bolt (12) is threadedly connected to the outer transmission sleeve (26) and is pressed against the output shaft of the driving source (1).

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