CN215890553U

CN215890553U - Direct-connected high-sealing type high-pressure fan

Info

Publication number: CN215890553U
Application number: CN202122526127.5U
Authority: CN
Inventors: 蒙萌蕊; 刘飞安
Original assignee: Dongguan Airhank Electromechanical Technology Co ltd
Current assignee: Dongguan Airhank Electromechanical Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-02-22
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a direct-connection high-sealing type high-pressure fan which comprises a motor, a pump body, a pump cover, an impeller and a permanent magnet coupling, wherein the permanent magnet coupling is connected between an impeller shaft and a motor shaft of the motor, the permanent magnet coupling comprises an inner magnet, an isolation cover, an outer rotor and an outer magnet, the isolation cover is connected with the pump body in a sealing mode, the inner magnet is connected with one end of the impeller shaft and rotatably installed in the isolation cover, the outer rotor is installed at one end of the motor shaft, the isolation cover extends into the outer rotor, and the outer magnet is installed on the inner wall of the outer rotor and is arranged on the periphery of the isolation cover. The utility model has compact structure and reasonable design, the motor and the impeller shaft are connected in a non-contact way by adopting the permanent magnet coupling, the motor and the fan part are in magnetic transmission, the fan part can be highly sealed, the gas entering the fan part can not flow out and leak at the motor shaft, and the utility model can be applied to occasions with higher leakage requirements, such as chemical production, poisonous gas delivery and the like.

Description

Direct-connected high-sealing type high-pressure fan

Technical Field

The utility model relates to the technical field of fans, in particular to a direct-connection high-sealing type high-pressure fan.

Background

The working principle of the high-pressure fan is that the impeller is mainly used for doing work on the entering gas to increase the kinetic energy of the gas, and then the pressure of the gas is improved through the centrifugal action and the diffusion process so as to achieve certain air quantity and air pressure and further achieve the technical effect of large-flow high-pressure air supply.

Wherein, the high pressure positive blower on the market at present generally has following not enough: the motor shaft of motor is generally directly stretched into in the pump body and is connected with the impeller, because the motor shaft needs rotary motion, can't seal motor shaft position, in occasions such as some chemical production, toxic gas transport, produces easily and leaks at motor shaft position department.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a direct-connection high-sealing type high-pressure fan.

In order to achieve the aim, the utility model provides a direct-connected high-sealing type high-pressure fan which comprises a motor, a pump body, a pump cover, an impeller and a permanent magnet coupling, the pump body is arranged at the front end of the motor in a sealing way, the pump cover is arranged at the front end of the pump body in a sealing way, the impeller is arranged in a fan cavity formed by combining the pump body and the pump cover through an impeller shaft, the permanent magnet coupler is arranged in a coupler mounting cavity arranged between the pump body and the motor, the permanent magnet coupler is connected between the impeller shaft and the motor shaft of the motor, the permanent magnet coupling comprises an inner magnet, an isolation cover, an outer rotor and an outer magnet, the isolation cover is connected with the pump body in a sealing way, the inner magnet is connected with one end of the impeller shaft and is rotatably arranged in the isolation cover, the outer rotor is arranged at one end of the motor shaft, the isolation hood extends into the outer rotor, and the outer magnets are arranged on the inner wall of the outer rotor and arranged on the periphery of the isolation hood.

Preferably, the pump body is integrally formed with a housing of the motor.

Preferably, the pump cover is hermetically arranged at the front end of the pump body through an O-shaped sealing ring, and the isolation cover is hermetically connected with the pump body through another O-shaped sealing ring.

Preferably, an isolation cavity is formed in the pump cover, a central through hole is formed in the center of the pump cover, an isolation ring installed at the central through hole of the pump cover is arranged in the isolation cavity of the pump cover, a front end cover for closing the isolation cavity of the pump cover is arranged in the middle of the front end of the pump cover, a bearing is arranged in the rear end of the front end cover, and the other end of the impeller shaft penetrates through a shaft hole of the impeller and a middle hole of the isolation ring in sequence and then is installed on the bearing.

Preferably, an oil seal is arranged between the middle hole of the isolating ring and the extending end of the motor shaft of the motor.

Preferably, a heat dissipation fan is arranged at the rear end of the motor, and fan blades of the heat dissipation fan are mounted at the other end of the motor shaft.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model has compact structure and reasonable design, the motor and the impeller shaft are connected in a non-contact way by adopting the permanent magnet coupling, the motor and the fan part are in magnetic transmission, the fan part can be highly sealed, and the gas entering the fan part cannot flow out and leak at the motor shaft.

2. The bearing is arranged outside the pump cover, and the bearing is separated from the pump cavity of the pump body through the isolating ring, so that the bearing is not subjected to high temperature generated by compressed gas to cause temperature rise to be high, heat is prevented from being transferred to the bearing, the service life of the bearing is prolonged, the bearing can be quickly replaced by only taking down the front end cover at the front end of the pump cover without disassembling the pump cover when the bearing is replaced, and the maintenance is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a side view of a direct-coupled high-sealing type high-pressure fan provided by an embodiment of the utility model;

fig. 2 is a cross-sectional view of a direct-coupled high-sealing type high-pressure fan provided by an embodiment of the utility model;

FIG. 3 is an enlarged view of a permanent magnet coupling portion according to an embodiment of the present invention;

fig. 4 is an enlarged view of the structure of the front end portion of the pump cover according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a direct-connected high-sealing high-pressure fan, which includes a motor 1, a pump body 2, a pump cover 3, an impeller 4, and a permanent magnet coupling 5, and each component of the embodiment is described in detail below with reference to the drawings.

The pump body 2 is hermetically installed at the front end of the motor 1, and during specific implementation, the pump body 2 can be integrally formed with the casing 12 of the motor 1, and certainly, the pump body 2 can also be hermetically connected with the front end of the motor 1 through a common O-shaped sealing ring (such as a silica gel or teflon O-shaped sealing ring).

The pump cover 3 is hermetically arranged at the front end of the pump body 2, and the pump cover 3 is hermetically arranged at the front end of the pump body 2 through an O-shaped sealing ring (such as a silica gel or Teflon O-shaped sealing ring).

The impeller 4 is installed in a fan cavity formed by combining the pump body 2 and the pump cover 3 through an impeller shaft 41, the permanent magnet coupler 5 is installed in a coupler installation cavity arranged between the pump body 2 and the motor 1, and the permanent magnet coupler 5 is connected between the impeller shaft 41 and a motor shaft 11 of the motor 1.

As shown in fig. 3, the permanent magnet coupling 5 may include an inner magnet 51, a separation cage 52, a cylindrical outer rotor 53 and an outer magnet 54, wherein one end of the separation cage 52 facing the motor is closed, an opening for inserting the inner magnet 51 is formed in the middle of one end of the separation cage 52 facing the impeller, an edge portion of the separation cage 52 may be hermetically connected to the pump body 2 through an O-ring (e.g., a silica gel or teflon O-ring), the inner magnet 51 is connected to one end of the impeller shaft 41 and rotatably installed in the separation cage 52, the outer rotor 53 is installed at one end of the motor shaft 11, the separation cage 52 extends into the inner portion of the outer rotor 53, the outer magnet 54 is installed on an inner wall of the outer rotor 53 and disposed on the periphery of the separation cage 52, and the position of the outer magnet 54 corresponds to the position of the inner magnet 51.

The permanent magnet coupler 5 adopts a magnetic coupling principle, can realize the transmission of force and torque between a motor shaft (namely a driving shaft) and an impeller shaft (namely a driven shaft) without direct contact, and in the transmission process, the isolation cover separates an outer magnet from an inner magnet, and magnetic lines of force pass through the isolation cover to transmit the power and the motion of the outer magnet to the inner magnet, thereby realizing non-contact sealed transmission.

As a further improvement of this embodiment, as shown in fig. 2 and 4, an isolation cavity 31 is provided inside the pump cover 3, a central through hole is provided at the center of the pump cover 3, an isolation ring 6 installed at the central through hole of the pump cover 3 is provided in the isolation cavity 31 of the pump cover 3, a front end cover 7 for closing the isolation cavity of the pump cover 3 is provided in the middle of the front end of the pump cover 3, an O-ring (such as a silica gel or teflon O-ring) can be used between the front end cover 7 and the pump cover 3 to realize sealing, a bearing 8 is provided inside the rear end of the front end cover 7, and the other end of the impeller shaft 41 sequentially passes through the shaft hole of the impeller 4 and the central hole of the isolation ring 6 and then is installed on the bearing 8.

Furthermore, an oil seal 10 may be provided between the central hole of the isolating ring 6 and the projecting end of the motor shaft 11 of the motor 1.

In this embodiment, set up the bearing in the pump cover outside to keep apart the pump chamber of bearing and the pump body through the spacer ring, the bearing can not receive the high temperature that compressed gas produced and the temperature rise becomes, prevents that heat transfer from giving the bearing, has improved the life of bearing, and when changing the bearing, need not unpack the pump cover apart, only need take off the front end housing of pump cover front end can quick replacement bearing, it is more convenient to maintain.

As shown in fig. 1 and 2, the rear end of the motor 1 may be further provided with a heat dissipation fan 9, and a fan blade 91 of the heat dissipation fan 9 is mounted at the other end of the motor shaft 11. The heat radiation fan 9 can perform air cooling heat radiation on the motor.

When the air-cooled fan works, the pump body 2, the pump cover 3, the front end cover 7 and the isolation cover 52 at the position of the fan can completely seal the inner parts of the fan, such as the impeller 4, the impeller shaft 41 and the like, the motor 11 is connected with the impeller shaft 41 in a non-contact mode through the permanent magnet coupler 5, the motor 11 and the position of the fan are in magnetic transmission, the position of the fan can be highly sealed, and air entering the position of the fan cannot flow out and cannot leak at the position of a motor shaft.

In conclusion, the utility model has compact structure and reasonable design, can realize no leakage, and can be applied to occasions with higher leakage requirements, such as chemical production, toxic gas transportation and the like.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a high canned type high pressure positive blower of associated mode which characterized in that: the pump body is mounted at the front end of the motor in a sealing mode, the pump cover is mounted at the front end of the pump body in a sealing mode, the impeller is mounted in a fan cavity formed by combining the pump body and the pump cover through an impeller shaft, the permanent magnet coupling is mounted in a coupling mounting cavity arranged between the pump body and the motor and connected between the impeller shaft and a motor shaft of the motor, the permanent magnet coupling comprises an inner magnet, an isolation cover, an outer rotor and an outer magnet, the isolation cover is connected with the pump body in a sealing mode, the inner magnet is connected with one end of the impeller shaft and rotatably mounted in the isolation cover, the outer rotor is mounted at one end of the motor shaft, the isolation cover extends into the inner portion of the outer rotor, and the outer magnet is mounted on the inner wall of the outer rotor and arranged on the periphery of the isolation cover.

2. The direct-connected high-seal type high-pressure fan according to claim 1, characterized in that: the pump body and the shell of the motor are integrally formed.

3. The direct-connected high-seal type high-pressure fan according to claim 1, characterized in that: the pump cover is arranged at the front end of the pump body in a sealing mode through an O-shaped sealing ring, and the isolation cover is connected with the pump body in a sealing mode through another O-shaped sealing ring.

4. The direct-connected high-seal type high-pressure fan according to claim 1, characterized in that: the pump cover is characterized in that an isolation cavity is formed in the pump cover, a central through hole is formed in the center of the pump cover, an isolation ring installed at the central through hole of the pump cover is arranged in the isolation cavity of the pump cover, a front end cover for closing the isolation cavity of the pump cover is arranged in the middle of the front end of the pump cover, a bearing is arranged in the rear end of the front end cover, and the other end of the impeller shaft penetrates through a shaft hole of the impeller and a middle hole of the isolation ring in sequence and then is installed on the bearing.

5. The direct-connected high-seal type high-pressure fan according to claim 4, characterized in that: and an oil seal is arranged between the middle hole of the isolating ring and the extending end of the motor shaft of the motor.

6. The direct-connected high-seal type high-pressure fan according to claim 1, characterized in that: the rear end of the motor is provided with a cooling fan, and fan blades of the cooling fan are arranged at the other end of the motor shaft.