Fan main engine structure with magnetic coupling

Abstract

The utility model provides a draught fan main machine structure with a magnetic coupling, which comprises a draught fan main machine and a motor, a magnetic coupling assembly is arranged between the draught fan main machine and the motor, the magnetic coupling assembly comprises an active magnetic assembly and a passive magnetic assembly, and an isolation cover is arranged between the active magnetic assembly and the passive magnetic assembly. The passive magnetic assembly is wrapped by the isolation cover. According to the draught fan main machine structure, the magnetic coupling is installed, the driving end of the draught fan rotor can be effectively sealed, the isolation hood is installed, the active magnetic assembly and the passive magnetic assembly are separated through the isolation hood, and the motor drives the active magnetic assembly to do rotary motion; the fan main machine is driven to rotate through magnetic attraction force between the active magnetic assembly and the passive magnetic assembly, and gas leaked from the output shaft end of the main machine is stored in the isolation hood and cannot be leaked into air to cause environmental pollution and harm to human bodies. Meanwhile, the oil hole is formed in the cylinder body, so that the pressure of the two independent spaces is consistent, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of fan equipment, and particularly relates to a fan host structure with a magnetic coupling. Background Art

[0002] At present, ordinary Roots blowers are generally driven by direct coupling or belt connection. In order to prevent the leakage of harmful gases during the transportation of some special gases, all leakage points of the blower need to be specially sealed, such as a pure mechanical seal structure. However, the pure mechanical seal structure is large in size and has high installation requirements. It also requires an external gas source and has high requirements on on-site conditions.

[0003] At the same time, the fan generally uses splash oil lubrication to lubricate the gears and bearings at the gear end and the drive end. The two ends are relatively independent, so the oil level and the pressure of the space are also relatively independent. In order to ensure consistent pressure and oil level at both ends, an external oil pipe is generally used to connect the two spaces. This increases the risk points of the external oil pipe and the oil pipe joint (oil leakage risk).

[0004] Therefore, in view of the shortcomings of the above solution in actual production and implementation, a fan host structure with a magnetic coupling is provided to solve the above technical problems. Utility Model Content

[0005] The utility model provides a fan host structure with a magnetic coupling, which solves the problems in the prior art.

[0006] The technical solution of the utility model is implemented as follows: a fan host structure with a magnetic coupling, including a fan host and a motor, a rotor rotatably installed in the fan host, a magnetic coupling assembly installed between the fan host and the motor, the magnetic coupling assembly including an active magnetic assembly and a passive magnetic assembly, the active magnetic assembly is transmission-connected to the output end of the motor, the active magnetic assembly is transmission-connected to the rotor, the active magnetic assembly and the passive magnetic assembly are arranged in coordination, a space is left between the active magnetic assembly and the passive magnetic assembly, an isolation cover is installed in the space, and the isolation cover wraps the passive magnetic assembly.

[0007] As a preferred embodiment, the magnetic coupling assembly includes a bell-shaped housing, the bell-shaped housing is fixedly installed between the fan main unit and the motor, and the active magnetic assembly and the passive magnetic assembly are installed in the bell-shaped housing.

[0008] As a preferred implementation, a motor connecting sleeve is fixedly provided on the side of the active magnetic component, and the motor output end is connected to the active magnetic component through the motor connecting sleeve.

[0009] As a preferred embodiment, a driving shaft connecting sleeve is rotatably installed on the main blower unit. One end of the driving shaft connecting sleeve is in transmission connection with the blower rotor, and the other end is fixedly connected to the passive magnetic assembly.

[0010] As a preferred embodiment, a first side cover is fixedly installed on the side of the main blower unit. A connecting plate is fixedly installed on the side of the first side cover. A connecting disk is installed on the side of the isolation cover, and the isolation cover is fixedly connected to the connecting plate through the connecting disk.

[0011] As a preferred embodiment, the end of the bell-shaped cover is fixedly connected to the connecting disk.

[0012] As a preferred embodiment, the main blower body includes a cylinder block, and an oil hole is provided on the side wall of the cylinder block, and the oil hole penetrates through the side wall of the cylinder block.

[0013] As a preferred embodiment, at least two oil holes are provided. One is above the side wall of the cylinder block and is the upper oil hole; the other is below the side wall of the cylinder block and is the lower oil hole.

[0014] As a preferred embodiment, the bell-shaped cover is provided with heat dissipation holes.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: The present utility model discloses a main blower unit structure with a magnetic coupling. The magnetic coupling is installed, which can effectively seal the driving end of the blower rotor. And an isolation cover is installed. The isolation cover separates the active magnetic assembly and the passive magnetic assembly. The motor drives the active magnetic assembly to make a rotary motion, and drives the main blower unit to rotate through the magnetic attraction between the active magnetic assembly and the passive magnetic assembly. The (toxic and harmful) gas leaked from the output shaft end of the main unit is stored in the isolation cover and will not leak into the air to cause environmental pollution and harm to the human body. Oil holes are provided on the cylinder block. One is to ensure that the pressures in the two independent spaces are the same, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the partial structure of the present utility model;

[0019] Figure 3It is a schematic side view of a local structure of the utility model;

[0020] Figure 4 for Figure 3 AA structure cross-sectional view;

[0021] Figure 5 It is a partial structural schematic diagram of the utility model;

[0022] Figure 6 It is a partial structural schematic diagram of the utility model;

[0023] Figure 7 It is a partial structural schematic diagram of the utility model.

[0024] In the figure, 1, second side cover; 2, cylinder body; 3, first side cover; 4, bell-shaped cover; 5, motor; 6, connecting plate; 7, limit sleeve; 8, motor connecting sleeve; 9, isolation cover; 10, passive magnetic component; 11, drive shaft connecting sleeve; 12, connecting plate; 13, active magnetic component; 14, oil hole; 15, fan rotor; 16, heat dissipation hole. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 6 As shown, a fan host structure with a magnetic coupling includes a fan host and a motor 5, a rotor is rotatably installed in the fan host, a magnetic coupling assembly is installed between the fan host and the motor 5, and the magnetic coupling assembly includes an active magnetic assembly 13 and a passive magnetic assembly 10, the active magnetic assembly 13 is transmission-connected to the output end of the motor 5, the active magnetic assembly 13 is transmission-connected to the fan rotor 15, the active magnetic assembly 13 and the passive magnetic assembly 10 are arranged in coordination, a space is left between the active magnetic assembly 13 and the passive magnetic assembly 10, an isolation cover 9 is installed in the space, and the isolation cover 9 wraps the passive magnetic assembly 10.

[0027] The magnetic coupling assembly comprises a bell-shaped housing 4 , which is fixedly mounted between the fan main unit and the motor 5 , and in which the active magnetic assembly 13 and the passive magnetic assembly 10 are mounted.

[0028] A motor 5 connection sleeve is fixedly arranged on the side of the active magnetic component 13 , and the output end of the motor 5 is connected to the active magnetic component 13 through the motor 5 connection sleeve.

[0029] Specifically, the active magnetic component 13 is integrally formed with the motor 5 connecting sleeve.

[0030] The fan main body is rotatably installed with a drive shaft connecting sleeve 11. One end of the drive shaft connecting sleeve 11 is in transmission connection with the fan rotor 15, and the other end is fixedly connected with the passive magnetic component 10.

[0031] Specifically, the drive shaft connecting sleeve 11 and the passive magnetic component 10 are fixedly connected by bolts.

[0032] The fan main body includes a cylinder block 2. A first side cover 3 and a second side cover 1 are fixedly installed on both sides of the cylinder block 2. A connecting plate 6 is fixedly installed on the side of the first side cover 3. A connecting disk 12 is installed on the side of the isolation cover 9. The isolation cover 9 is fixedly connected with the connecting plate 6 through the connecting disk 12. Specifically, a sealing ring is installed between the first side cover 3 and the connecting plate 6.

[0033] The end of the bell-shaped cover 4 is fixedly connected with the connecting disk 12. The bell-shaped cover 4 is provided with heat dissipation holes 16.

[0034] Specifically, the end of the bell-shaped cover 4 is fixedly connected with the connecting disk 12 by bolts.

[0035] As Figure 7 shown, the fan main body includes a cylinder block 2. An oil hole 14 is provided on the side wall of the cylinder block 2, and the oil hole 14 penetrates through the side wall of the cylinder block 2.

[0036] There are at least two oil holes 14. One is above the side wall of the cylinder block 2, and the other is below the side wall of the cylinder block 2.

[0037] The oil holes 14 are arranged inside the cylinder block 2. One is to ensure that the pressures of the two independent spaces are consistent (the upper oil hole), and the oil levels are consistent (the lower oil hole). The operation / maintenance is more convenient. Only need to add oil / drain oil from one side, and the space layout is more reasonable.

[0038] In this embodiment, the magnetic coupling assembly is a synchronous cylindrical magnetic coupling. The active magnetic assembly 13 is the outer rotor of the magnetic coupling, and the passive magnetic assembly 10 is the inner rotor of the magnetic coupling. Small permanent magnets of the same volume are arranged on the circumference of the outer rotor, and these permanent magnets are arranged in a uniform circumferential pattern with alternating south and north poles. This kind of magnetic coupling utilizes the working principle of like poles repelling and opposite poles attracting each other. Its working process is as follows: The motor drives the outer rotor to rotate. There is an angular displacement of the permanent magnets on the outer rotor relative to the permanent magnets on the inner rotor. The two groups of permanent magnets generate push-pull magnetic forces, and under the action of these magnetic forces, the inner rotor rotates. This kind of magnetic coupling can obtain a relatively high output torque, operate stably, have high efficiency, and does not require the use of shaft seals, so there is no leakage problem and it can be well applied to some dangerous fields. The research on synchronous cylindrical magnetic couplings has been relatively mature, and they have been commercialized and widely used. There are also many domestic enterprises producing synchronous magnetic couplings.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan host structure with a magnetic coupling, comprising a fan host and a motor (5), wherein a fan rotor (15) is rotatably installed in the fan host, a magnetic coupling assembly is installed between the fan host and the motor (5), the magnetic coupling assembly comprises an active magnetic assembly (13) and a passive magnetic assembly, the active magnetic assembly (13) is transmission-connected to the output end of the motor (5), the active magnetic assembly (13) is transmission-connected to the rotor, the active magnetic assembly (13) is cooperatively arranged with the passive magnetic assembly (10), and the characteristics are as follows: A space is left between the active magnetic component (13) and the passive magnetic component (10), and an isolation cover (9) is installed in this space. The isolation cover (9) wraps the passive magnetic component (10). The main blower unit includes a cylinder block (2), and the cylinder block (2) is provided with an oil hole.

2. The structure of the main fan unit with a magnetic coupling according to claim 1, characterized in that, The magnetic coupling assembly includes a bell-shaped cover (4). The bell-shaped cover (4) is fixedly installed between the main blower unit and the motor (5). The active magnetic component (13) and the passive magnetic component (10) are installed in the bell-shaped cover (4).

3. The structure of the main blower unit with a magnetic coupling according to claim 1, characterized in that, A motor (5) connecting sleeve is fixedly arranged on the side of the active magnetic component (13). The output end of the motor (5) is connected to the active magnetic component (13) through the motor (5) connecting sleeve.

4. The main structure of a fan with a magnetic coupling according to claim 1, characterized in that, A drive shaft connecting sleeve (11) is rotatably installed in the main blower unit. One end of the drive shaft connecting sleeve (11) is in transmission connection with the blower rotor (15), and the other end is fixedly connected to the passive magnetic component (10).

5. The structure of the main blower unit with a magnetic coupling according to claim 2, characterized in that, A first side cover (3) is fixedly installed on the side of the main blower unit. A connecting plate (6) is fixedly installed on the side of the first side cover (3). A connecting disk (12) is arranged on the side of the isolation cover (9). The isolation cover (9) is fixedly connected to the connecting plate (6) through the connecting disk (12).

6. The structure of the main fan unit with a magnetic coupling according to claim 5, characterized in that, The end of the bell-shaped cover (4) is fixedly connected to the connecting disk (12).

7. The main structure of a fan with a magnetic coupling according to claim 1, characterized in that, The oil hole (14) is arranged on the side wall of the cylinder block (2), and the oil hole (14) penetrates through the side wall of the cylinder block (2).

8. A blower mainframe structure with a magnetic coupling according to claim 7, characterized in that, There are at least two oil holes (14). One is above the side wall of the cylinder block (2), and the other is below the side wall of the cylinder block (2).

9. The structure of the main fan unit with a magnetic coupling according to claim 2, characterized in that The bell-shaped cover (4) is provided with heat dissipation holes (16).

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