Magnetic transmission structure and magnetic drive pump with same

Abstract

The utility model relates to the technical field of magnetic drive pumps, and discloses a magnetic drive structure and a magnetic drive pump with the same, the magnetic drive structure comprises an isolation sleeve, an inner magnetic rotor and an impeller, an annular groove is formed in the outer edge of the outer flanging of the top of the isolation sleeve, and a sealing gasket is placed in the annular groove; the isolation sleeve is placed on the inner side of the middle connecting frame, the outer flanging is limited above the middle connecting frame, and a pump shaft is in threaded connection with an inner threaded ring in the center of the interior of the isolation sleeve. The distance sleeve and the inner magnetic rotor which are assembled are placed in the middle connecting frame, the impeller and the outer turnup are limited above the middle connecting frame, and the turnup and the sealing gasket are packaged in a groove defined by the middle connecting frame and the pump shell. Compared with the prior art that the spacer sleeve needs to be fixed to the pump shell through bolts in a screwed mode, and then the spacer sleeve and the pump shell are in butt joint through bolts, the assembly time can be effectively shortened, the assembly efficiency can be improved, and later disassembly and maintenance can be facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic pumps, and in particular relates to a magnetic transmission structure and a magnetic pump with the structure. Background Art

[0002] The magnetic transmission structure of the magnetic pump is the key part of the pump to achieve leakage-free transmission. It is mainly composed of an outer magnetic rotor, an inner magnetic rotor, an isolation sleeve and an impeller. The function of the magnetic transmission structure is mainly to achieve power transmission between the motor and the pump through magnetic force, thereby rotating the pump impeller and achieving the purpose of conveying liquid.

[0003] At present, the traditional isolation sleeve is fixed to the pump casing by bolts, and then the pump casing and the intermediate connecting frame need to be connected by bolts. This assembly method increases the assembly steps and time and reduces the assembly efficiency. The isolation sleeve fixed with bolts needs to be disassembled during maintenance and overhaul, which increases the difficulty of maintenance and also increases the complexity of troubleshooting. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a magnetic transmission structure and a magnetic pump having the structure.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A magnetic transmission structure, comprising:

[0007] An isolation sleeve, wherein an annular groove is provided on the outer edge of the outer flange at the top of the isolation sleeve, a sealing gasket is placed in the annular groove, the isolation sleeve is placed on the inner side of the intermediate connecting frame and the outer flange is limited above the intermediate connecting frame, and a pump shaft is threadedly connected to the inner threaded ring at the inner center of the isolation sleeve;

[0008] An inner magnetic rotor, wherein a sleeve which is sleeved on the outer side of the pump shaft is inserted into a central ring at the inner center of the inner magnetic rotor;

[0009] The impeller has inner teeth which are threadedly connected to a center ring located outside the inner magnetic rotor.

[0010] Preferably, a protective sleeve is provided on the inner side of the inner magnetic rotor, which is threadedly connected to the center ring and located on the outer side of the sleeve. The protective sleeve cooperates with the center ring and rotates clockwise. The design of the protective sleeve can effectively protect the sleeve.

[0011] Preferably, a moving ring is threadedly connected to a side of the impeller facing away from the inner magnetic rotor. The moving ring is screwed onto the impeller counterclockwise. The moving ring and the impeller are threadedly connected to facilitate installation.

[0012] Preferably, the inner teeth on the impeller are screwed on the center ring counterclockwise. The inner teeth on the impeller and the center ring are butted against each other by threads, which is convenient for installation.

[0013] Preferably, a sealing ring that is connected to the pump shaft is sleeved on the outer side of the internal thread ring, and the pump shaft is provided with a hexagonal portion.

[0014] A magnetic pump comprises the magnetic transmission structure mentioned above.

[0015] The magnetic pump also includes a motor for driving an outer magnetic rotor to rotate and a pump housing. The outer magnetic rotor extends into the inner side of the middle connecting frame and is sleeved on the outer side of the isolation sleeve. The impeller extends into the pump housing.

[0016] Preferably, the outer flange is clamped between the pump casing and the intermediate connecting frame, and the pump casing and the intermediate connecting frame are sealed by a plurality of first bolts arranged in a ring with equal distances, and the motor and the intermediate connecting frame are sealed by a plurality of second bolts arranged in a ring with equal distances.

[0017] Compared with the prior art, the technical effects and advantages of the utility model are:

[0018] The magnetic transmission structure and the magnetic pump having the structure insert the sleeve into the center ring of the inner magnetic rotor, then thread the inner teeth on the impeller with the center ring on the outside of the inner magnetic rotor, then thread the pump shaft to the inner threaded ring at the inner center of the isolation sleeve, and finally insert the inner magnetic rotor into the isolation sleeve, and insert the pump shaft into the sleeve to complete the assembly of the isolation sleeve, the inner magnetic rotor and the impeller. The assembled isolation sleeve and the inner magnetic rotor are placed in the middle connecting frame, and the impeller and the outer flange are limited above the middle connecting frame. A groove for matching the outer flange and the sealing gasket is provided on the pump casing, and the flange and the sealing gasket are encapsulated in the groove surrounded by the middle connecting frame and the pump casing. The isolation sleeve is encapsulated between the middle connecting frame and the pump casing in the form of a butt seal. Compared with the traditional technology that the isolation sleeve needs to be fixed to the pump casing by bolts and then the intermediate connecting frame and the pump casing are butt-jointed by bolts, it can effectively reduce the assembly time, improve the assembly efficiency, and facilitate the subsequent disassembly and maintenance;

[0019] By opening an annular groove on the top of the isolation sleeve and placing a sealing gasket, and opening a groove on the pump casing to seal the flange and the sealing gasket, this design improves the sealing performance and reduces the risk of leakage. The magnetic transmission structure greatly simplifies the assembly process through direct plug-in and threaded connection of the shaft sleeve, internal magnetic rotor and impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the magnetic pump of the utility model;

[0021] Figure 2It is a structural schematic diagram of the magnetic transmission structure of the utility model;

[0022] Figure 3 This is the first exploded view of the magnetic transmission structure of the utility model;

[0023] Figure 4 This is a second exploded view of the magnetic transmission structure of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the isolation sleeve of the utility model.

[0025] In the figure: 1. isolation sleeve; 2. outer flange; 3. annular groove; 4. sealing gasket; 5. intermediate connecting frame; 6. internal thread ring; 7. pump shaft; 8. internal magnetic rotor; 9. center ring; 10. shaft sleeve; 11. impeller; 12. internal thread; 13. protective sleeve; 14. moving ring; 15. sealing ring; 16. motor; 17. pump casing; 18. first bolt; 19. second bolt; 20. hexagonal part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The following is combined with Figure 1-5 To further explain this application in detail,

[0028] The embodiment of the present application discloses a magnetic transmission structure, including an isolation sleeve 1, an inner magnetic rotor 8 and an impeller 11. An annular groove 3 is provided on the outer edge of the outer flange 2 at the top of the isolation sleeve 1, and a sealing gasket 4 is placed in the annular groove 3. The isolation sleeve 1 is placed on the inner side of the intermediate connecting frame 5 and the outer flange 2 is limited above the intermediate connecting frame 5. A pump shaft 7 is threadedly connected to the internal thread ring 6 at the inner center of the isolation sleeve 1; a shaft sleeve 10 that is sleeved on the outer side of the pump shaft 7 is inserted into the center ring 9 at the inner center of the inner magnetic rotor 8; the inner teeth 12 on the impeller 11 are threadedly connected to the center ring 9 located on the outer side of the inner magnetic rotor 8.

[0029] During assembly, the sleeve 10 is first inserted into the center ring 9 at the center of the inner magnetic rotor 8, and then the inner teeth 12 on the impeller 11 are threadedly connected to the center ring 9 located outside the inner magnetic rotor 8, and then the pump shaft 7 is threadedly connected to the inner thread ring 6 at the center of the inner spacer sleeve 1, and then the inner magnetic rotor 8 is inserted into the spacer sleeve 1, and the pump shaft 7 is inserted into the sleeve 10, and the assembly of the spacer sleeve 1, the inner magnetic rotor 8 and the impeller 11 is completed;

[0030] The assembled isolation sleeve 1 and inner magnetic rotor 8 are placed in the intermediate connecting frame 5, the impeller 11 and the outer flange 2 are limited above the intermediate connecting frame 5, and a groove is opened on the pump casing 17 to fit the outer flange 2 and the sealing gasket 4. The flange and the sealing gasket 4 are encapsulated in the groove surrounded by the intermediate connecting frame 5 and the pump casing 17. The isolation sleeve 1 is encapsulated between the intermediate connecting frame 5 and the pump casing 17 in the form of a butt seal. Compared with the traditional technology, the isolation sleeve 1 needs to be fixed to the pump casing 17 by bolts and then the intermediate connecting frame and the pump casing 17 are butt-jointed by bolts. It can effectively reduce the assembly time, improve the assembly efficiency, and facilitate the later disassembly and maintenance.

[0031] The assembly of a conventional magnetic pump usually requires multiple steps, such as bolt tightening, etc., while the magnetic transmission structure greatly simplifies the assembly process by directly plugging and threading the shaft sleeve 10, the inner magnetic rotor 8, and the impeller 11. This not only reduces the assembly time, but also reduces the possibility of assembly errors. Due to the use of quick plug-in and threaded connection, the assembly speed is improved, especially in mass production, this advantage is more significant. The design of this structure makes it very convenient to disassemble and replace the isolation sleeve 1, the internal magnetic rotor 8 and the impeller 11. Only the threaded connection and plug-in are needed, which greatly reduces the maintenance cost and time. By opening an annular groove 3 on the top of the isolation sleeve 1 and placing the sealing gasket 4, and opening a groove on the pump casing 17 to seal the flange and the sealing gasket 4, this design improves the sealing performance and reduces the risk of leakage. The magnetic transmission structure eliminates the leakage points of traditional mechanical seals, ensures the leakage-free operation of the pump, and improves the overall reliability of the pump. The design of the magnetic transmission structure reduces the contact and friction of mechanical parts, thereby reducing the noise and vibration during the operation of the pump. Due to the reduction of mechanical wear, this structure helps to extend the service life of the pump and reduce the replacement frequency. The design of this structure optimizes the spatial layout, making the overall size of the pump more compact and easy to install and transport.

[0032] A protective sleeve 13 is provided on the inner side of the inner magnetic rotor 8 and is threadedly connected to the center ring 9 and is located on the outer side of the shaft sleeve 10. The protective sleeve 13 cooperates with the center ring 9 and is tightened clockwise.

[0033] The design of the protective sleeve 13 can effectively protect the shaft sleeve 10 and prevent it from being damaged. The protective sleeve 13 is threadedly connected to the center ring 9 and tightened clockwise. This design can improve the overall sealing performance of the pump and reduce the risk of medium leakage. The protective sleeve 13 and the center ring 9 are tightened together without the need for other bolts or fasteners, which simplifies the assembly process and improves assembly efficiency.

[0034] A moving ring 14 is threadedly connected to a side of the impeller 11 that is away from the inner magnetic rotor 8 . The moving ring 14 is screwed onto the impeller 11 in a counterclockwise direction.

[0035] The moving ring 14 is butted against the thread of the impeller 11 and is screwed onto the impeller 11 counterclockwise. This design can further improve the sealing performance of the pump and reduce the possibility of medium leakage.

[0036] The inner teeth 12 on the impeller 11 are screwed onto the center ring 9 in a counterclockwise direction.

[0037] The inner teeth 12 on the impeller 11 are screwed onto the center ring 9 counterclockwise. This design can simplify the assembly process and shorten the assembly time.

[0038] The outer side of the inner thread ring 6 is sleeved with a sealing ring 15 connected to the pump shaft 7. The pump shaft 7 is provided with a hexagonal portion 20. The setting of the hexagonal portion 20 facilitates the pump shaft 7 to be screwed and fixed on the isolation sleeve 1.

[0039] A magnetic pump comprises the magnetic transmission structure mentioned above.

[0040] The magnetic pump further comprises a motor 16 for driving an outer magnetic rotor to rotate and a pump housing 17 . The outer magnetic rotor extends into the inner side of the middle connecting frame 5 and is sleeved on the outer side of the isolation sleeve 1 . The impeller 11 extends into the pump housing 17 .

[0041] The outer flange 2 is clamped between the pump housing 17 and the intermediate connecting frame 5, and the pump housing 17 and the intermediate connecting frame 5 are sealed connected by a plurality of first bolts 18 arranged in a ring with equal distances, and the motor 16 and the intermediate connecting frame 5 are sealed connected by a plurality of second bolts 19 arranged in a ring with equal distances.

[0042] The sealed connection between the first bolt 18 and the second bolt 19 can ensure that the components are tightly connected, enhance the structural stability of the entire magnetic pump, and reduce vibration and noise during operation. The sealed connection between the first bolt 18 and the second bolt 19 can effectively prevent medium leakage and ensure the safe operation of the magnetic pump, which is especially important for working conditions requiring high sealing performance. By setting a plurality of first bolts 18 and second bolts 19 arranged at equal distances in a ring, later maintenance and repair work can be facilitated, and it is easier to disassemble and assemble various components. The bolt sealed connection method can simplify the assembly process of the entire magnetic pump, reduce assembly time, and improve production efficiency. The bolt sealed connection and the structural design of the outer flange 2, the pump casing 17 and the intermediate connecting frame 5 can form a more complete sealing system, effectively prevent the occurrence of leakage problems, and ensure the normal operation of the magnetic pump.

[0043] The magnetic transmission structure and the magnetic pump with the structure are mainly based on magnetic transmission technology. The motor 16 drives the outer magnetic rotor to rotate, and the outer magnetic rotor is coupled to the inner magnetic rotor 8 through magnetic force. The inner magnetic rotor 8 drives the impeller 11 to rotate, thereby realizing the transportation of fluid. The magnetic transmission structure eliminates the leakage points of traditional mechanical seals, ensures the leakage-free operation of the pump, and improves the overall reliability of the pump.

[0044] The design of the protective sleeve 13 and the dynamic ring 14 is to further protect the internal components, reduce leakage and improve the sealing performance. The threaded connection between the inner teeth 12 on the impeller 11 and the center ring 9 makes the connection between the impeller 11 and the inner magnetic rotor 8 more secure and simplifies the assembly process.

[0045] The first bolt 18 and the second bolt 19 are provided to seal and connect the various components, thereby ensuring a tight connection between the pump housing 17 and the intermediate connecting frame 5, enhancing the structural stability of the pump, reducing vibration and noise during operation, and facilitating subsequent maintenance and overhaul.

[0046] Overall, the magnetic drive pump is designed to improve pump performance, reliability, ease of maintenance and operating efficiency, while reducing leakage risks and operating costs.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic transmission structure, characterized in that: include: An isolation sleeve (1), wherein an outer edge of an outer flange (2) at the top of the isolation sleeve (1) is provided with an annular groove (3), a sealing gasket (4) is placed in the annular groove (3), the isolation sleeve (1) is placed on the inner side of an intermediate connecting frame (5) and the outer flange (2) is limited above the intermediate connecting frame (5), and a pump shaft (7) is threadedly connected to an internal thread ring (6) at the center of the isolation sleeve (1); An inner magnetic rotor (8), wherein a central ring (9) at the inner center of the inner magnetic rotor (8) is plugged with a shaft sleeve (10) sleeved on the outer side of the pump shaft (7); An impeller (11), wherein the inner teeth (12) on the impeller (11) are threadedly connected to a center ring (9) located outside the inner magnetic rotor (8).

2. A magnetic transmission structure according to claim 1, characterized in that: The inner side of the inner magnetic rotor (8) is provided with a protective sleeve (13) which is threadedly connected to the center ring (9) and is located on the outer side of the shaft sleeve (10); the protective sleeve (13) cooperates with the center ring (9) and is tightened clockwise.

3. A magnetic transmission structure according to claim 1, characterized in that: A moving ring (14) is threadedly connected to a side of the impeller (11) that is away from the inner magnetic rotor (8), and the moving ring (14) is screwed onto the impeller (11) in a counterclockwise direction.

4. A magnetic transmission structure according to claim 1, characterized in that: The inner teeth (12) on the impeller (11) are screwed counterclockwise onto the center ring (9).

5. A magnetic transmission structure according to claim 1, characterized in that: A sealing ring (15) is sleeved on the outer side of the internal thread ring (6) and is connected to the pump shaft (7). The pump shaft (7) is provided with a hexagonal portion (20).

6. A magnetic pump, characterized in that: The magnetic pump comprises the magnetic transmission structure described in any one of claims 1-5.

7. A magnetic pump according to claim 6, characterized in that: It also includes a motor (16) for driving the external magnetic rotor to rotate and a pump casing (17). The external magnetic rotor extends into the inner side of the intermediate connecting frame (5) and is sleeved on the outer side of the isolation sleeve (1). The impeller (11) extends into the pump casing (17).

8. A magnetic pump according to claim 7, characterized in that: The outer flange (2) is clamped between the pump housing (17) and the intermediate connecting frame (5), and the pump housing (17) and the intermediate connecting frame (5) are sealed by a plurality of first bolts (18) arranged in an annular pattern at equal distances, and the motor (16) and the intermediate connecting frame (5) are sealed by a plurality of second bolts (19) arranged in an annular pattern at equal distances.

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