CN220687629U

CN220687629U - Explosion-proof fan of variable-frequency speed-regulating asynchronous motor

Info

Publication number: CN220687629U
Application number: CN202322276719.5U
Authority: CN
Inventors: 薛蛟; 唐宏伟
Original assignee: Changzhou Changyang Fan Co ltd
Current assignee: Changzhou Changyang Fan Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-29
Anticipated expiration: 2033-08-24

Abstract

The utility model discloses an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor, which relates to the field of explosion-proof fans and comprises a fan shell, wherein two groups of bottom brackets are arranged on the bottom outer wall of the fan shell, the two groups of bottom brackets are symmetrically distributed on the bottom outer wall of the fan shell, a fixing piece is arranged on the inner wall of the fan shell, a rotating motor is arranged on the inner wall of the fixing piece, a rotating shaft is arranged on the outer wall of the rotating motor, a rotating fan blade is arranged on the outer wall of the rotating fan blade, two groups of plug connectors are arranged on the upper end and the lower end of the outer wall of the rotating fan blade, a plurality of groups of guide grooves are arranged on the side outer wall of the fan shell, and a plurality of groups of guide grooves are symmetrically distributed on the side outer wall of the fan shell. The utility model can improve the safety performance of the device and facilitate the operation of the device by a user.

Description

Explosion-proof fan of variable-frequency speed-regulating asynchronous motor

Technical Field

The utility model relates to the field of explosion-proof fans, in particular to an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor.

Background

Asynchronous machines were invented by italian physicists and electrical engineers Fei Lali s in 1885. In 1888, experimental reports are provided, strict scientific description is made on the rotating magnetic field, and a foundation is laid for developing asynchronous motors and self-starting motors in the future. Fei Lali S believes that the theory of rotating magnetic fields he developed and the new products he developed are far more scientifically valuable than substances, so he does not intend to apply for his own utility model, but rather demonstrates these latest achievements to the public in the laboratory. He also advocates the use of an alternating current system. In the same year, niglas Tesla patented induction motors in the United states. After one year, mikhail Dolivo-Dobrovelsky invented cage type asynchronous motor. Asynchronous motors have evolved rapidly, and for the same size asynchronous motors, the rated power has evolved from 5.5kW in 1897 to 74.6kW in 1976. Squirrel-cage asynchronous motors are the most widely used asynchronous motors. An asynchronous motor, also called an induction motor, is an ac motor that generates electromagnetic torque by the interaction of an air gap rotating magnetic field and a rotor winding induced current, thereby realizing conversion of electromechanical energy into mechanical energy, and a three-phase asynchronous motor is mainly used as a motor to drag various production machines, such as: fans, pumps, compressors, machine tools, light industrial and mining machinery, threshing and crushing machines in agricultural production, processing machinery in agricultural by-products, and the like. Simple structure, easy manufacture, low price, reliable operation, firmness and durability, higher operation efficiency and applicable working characteristics. The fan is a machine which relies on input mechanical energy to raise the pressure of gas and discharge the gas, and is a driven fluid machine. The fan is a common short for gas compression and gas conveying machinery in China, and the fan generally comprises a ventilator, a blower and a wind driven generator. The explosion-proof fan in the market can be coated in the fan blade shell through copper sheets, so that the iron fan blade and the iron shell are prevented from being rubbed to generate sparks, but the device fixes the rotating motor on the outer wall of the shell, and the rotating motor is damaged by external bad weather, so that the safety performance of the device is reduced.

An explosion-proof fan (bulletin number: CN 103486086A) of a variable-frequency speed-regulating asynchronous motor comprises a fan motor, a fan blade shell, a ventilating drum and a ventilating hood, wherein the fan blade is arranged at one end of the fan motor, the fan blade shell is arranged on the fan motor and arranged at the outer side of the fan blade, one end of the ventilating drum extends into the fan blade shell to be communicated with the fan blade shell, and the other end of the ventilating drum is communicated with the ventilating hood; the fan blade is characterized in that a copper sheet is coated on the outer side of one end of the air funnel extending into the fan blade shell. The utility model has the advantage of preventing the spark generated by the friction of the fan blade.

Above-mentioned patent passes through the air funnel and the copper sheet, realizes preventing that the fan blade friction from producing the spark, but the device is pegged graft the motor fixedly at the outer wall of shell, can cause the motor to receive external rainwater weather and dust to influence the destruction, makes the security performance of device reduce. Therefore, it is necessary to invent an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor to solve the above problems.

Disclosure of Invention

The utility model aims to provide an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor, which aims to solve the problem of low safety performance in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an explosion-proof fan of Variable Frequency Speed Governing (VFSG) asynchronous motor, includes the fan shell, the bottom outer wall of fan shell is provided with two sets of bottom support, two sets of bottom support symmetric distribution is at the bottom outer wall of fan shell, the inner wall of fan shell is provided with the mounting, the inner wall of mounting is provided with rotation motor, rotation motor's outer wall is provided with the axis of rotation, rotation fan blade's outer wall is provided with rotates the fan blade, rotation fan blade's outer wall is provided with two sets of connectors, two sets of connector symmetric distribution is at rotation fan blade's outer wall upper and lower both ends, fan shell's side outer wall is provided with multiunit guide groove, multiunit guide groove symmetric distribution is at fan shell's side outer wall.

Two groups of filter screens are arranged on one side, far away from the guide groove, of the side outer wall of the fan housing, and the two groups of filter screens are symmetrically distributed on one side, far away from the guide groove, of the side outer wall of the fan housing.

The inner wall of the filter screen is provided with a plurality of groups of guide bulges, and a plurality of groups of guide bulges are uniformly distributed on the inner wall of the filter screen.

The inner wall of the bottom bracket is provided with a resistor, and the outer wall of the resistor is provided with a plurality of groups of scale marks.

And a rotary button is arranged on one side of the outer wall of the resistor, which is far away from the scale marks.

The inner wall of bottom support is kept away from one side of resistor is provided with the surge device, the outer wall of surge device is provided with the description data plate.

The bottom outer wall of bottom support is provided with two sets of elongated recess, the top inner wall of elongated recess is provided with the telescopic link, the bottom outer wall of telescopic link is provided with the universal wheel.

The utility model has the technical effects and advantages that:

1. through setting up blower housing, mounting, rotating motor, axis of rotation, rotate fan blade, plug connector, guide recess, filter screen, direction protruding, surge device, rotate the fan blade to fix on the axis of rotation of the motor outer wall through two sets of plug connectors, rotate the motor outer wall and peg graft in the mounting of blower housing inner wall, the multiunit direction protruding of two sets of filter screen inner walls is fixed and peg graft in multiunit guide recess inner wall of blower housing outer wall, and the surge device meets with rotating the motor through the wire, make the security performance of the device improve;

2. through setting up bottom support, resistor, scale mark number, rotary button, description nameplate, long recess, telescopic link, universal wheel, the telescopic link is fixed in the long recess of bottom support bottom outer wall with the universal wheel of its bottom, makes the device be convenient for remove, rotary button on the rotary resistor outer wall scale mark number makes the rotational speed of motor adjustable, and the description nameplate is fixed at the surge device outer wall, makes device convenient to use person operate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor.

Fig. 2 is a schematic diagram of a top view structure of an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor.

Fig. 3 is a schematic diagram of a bottom view structure of an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor.

Fig. 4 is a schematic diagram of an explosion structure of an explosion-proof fan of a variable-frequency speed-regulating asynchronous motor.

In the figure: 1. a blower housing; 2. a bottom bracket; 3. a fixing member; 4. a rotating motor; 5. a rotating shaft; 6. rotating the fan blade; 7. a plug-in component; 8. a guide groove; 9. a filter screen; 10. a guide protrusion; 11. a resistor; 12. scale marks; 13. rotating the button; 14. a surge device; 15. instruction nameplate; 16. an elongated recess; 17. a telescopic rod; 18. and a universal wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides an explosion-proof fan of a variable frequency speed regulation asynchronous motor as shown in figures 1-4, which comprises a fan shell 1, wherein two groups of bottom brackets 2 are arranged on the bottom outer wall of the fan shell 1, the two groups of bottom brackets 2 are symmetrically distributed on the bottom outer wall of the fan shell 1, a user can fix the device on the ground by fixing the two groups of bottom brackets 2 on the bottom outer wall of the fan shell 1, the inner wall of the fan shell 1 is provided with a fixing piece 3, the inner wall of the fixing piece 3 is provided with a rotating motor 4, the user can fix the rotating motor 4 in the fan shell 1 by inserting the outer wall of the rotating motor 4 into the inner wall of the fixing piece 3 of the inner wall of the fan shell 1, the outer wall of the rotating motor 4 is provided with a rotating shaft 5, the outer wall of the rotating shaft 5 is provided with a rotating fan blade 6, the outer wall of the rotating fan blade 6 is provided with two groups of plug connectors 7, the two groups of plug connectors 7 are symmetrically distributed at the upper end and the lower end of the outer wall of the rotating fan blade 6, a user can plug the rotating fan blade 6 on the rotating shaft 5 of the outer wall of the rotating motor 4, the rotating fan blade 6 is fixed on the outer wall of the rotating shaft 5 by twisting the two groups of plug connectors 7, the rotating fan blade 6 can rotate along with the electrified operation of the rotating motor 4, the side outer wall of the fan housing 1 is provided with a plurality of groups of guide grooves 8, the groups of guide grooves 8 are symmetrically distributed on the side outer wall of the fan housing 1, and the inner diameter size of the guide grooves 8 is the same as the outer diameter size of the guide protrusions 10.

Two groups of filter screens 9 are arranged on one side, far away from the guide groove 8, of the side outer wall of the fan housing 1, the two groups of filter screens 9 are symmetrically distributed on one side, far away from the guide groove 8, of the side outer wall of the fan housing 1, and the size of each filter screen 9 is the same as the outer diameter size of the fan housing 1.

The inner wall of the filter screen 9 is provided with a plurality of groups of guide bulges 10, and the plurality of groups of guide bulges 10 are uniformly distributed on the inner wall of the filter screen 9, wherein a user can connect the plurality of groups of guide bulges 10 on the inner wall of the filter screen 9 in the guide grooves 8 on the outer wall of the side surface of the fan housing 1 in an inserting manner, so that the filter screen 9 is fixedly connected with the fan housing 1.

The inner wall of the bottom bracket 2 is provided with a resistor 11, the outer wall of the resistor 11 is provided with a plurality of groups of scale marks 12, wherein a user can fix the connection between the resistor 11 and the bottom bracket 2 by arranging the resistor 11 on the inner walls of the two groups of bottom brackets 2, and the resistor 11 can be connected with the rotating motor 4 through a wire, so that the resistance value on the resistor 11 is changed, and the rotating speed of the rotating motor 4 can be changed.

The outer wall of the resistor 11 is provided with a rotary button 13 at a side far from the scale marks 12, wherein a user can control the resistance value inside the resistor 11 to change by rotating the rotary button 13 at the outer wall of the resistor 11, and a plurality of groups of scale marks 12 at one side of the resistor, so that the device can be convenient for the user to observe the adjustment change of the resistance.

The surge device 14 is arranged on one side of the inner wall of the bottom bracket 2 far away from the resistor 11, and the instruction nameplate 15 is arranged on the outer wall of the surge device 14, wherein when the surge device 14 can suddenly generate peak current or voltage in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that damage of the surge to other equipment in the loop is avoided, and the safety performance of the device is improved.

The bottom outer wall of bottom support 2 is provided with two sets of elongated recess 16, and the top inner wall of elongated recess 16 is provided with telescopic link 17, and the bottom outer wall of telescopic link 17 is provided with universal wheel 18, and wherein the user accessible is fixed telescopic link 17 top at elongated recess 16 top inner wall, and telescopic link 17 operation can drive the universal wheel 18 of its bottom and go up and down, makes universal wheel 18 can meet with ground, makes the device be convenient for remove.

Working principle: the user can fix the rotating fan blade 6 on the rotating shaft 5 of the outer wall of the rotating motor 4 through two groups of connectors 7, the rotating motor 4 is fixedly inserted into the inner wall of the fixing piece 3 in the fan shell 1, a plurality of groups of guide protrusions 10 of the inner walls of the two groups of filter screens 9 are fixedly inserted into a plurality of groups of guide grooves 8 of the outer wall of the fan shell 1, so that the rotating motor 4 can be fixed in the fan shell 1 to safely run, and the rotating motor 4 can be connected with the rotating motor 4 in the fan shell 1 through a wire by a surge device 14, so that the rotating motor 4 can be prevented from being damaged by thunderstorm weather, and the safety performance of the device is improved; the user's accessible is fixed the long recess 16 top inner wall at bottom support 2 bottom outer wall with telescopic link 17 top, the operation of telescopic link 17 can drive the universal wheel 18 of its bottom flexible and meet with ground, make the device be convenient for remove, rotate the rotatory button 13 on the outer wall scale mark 12 of resistor 11 between two sets of bottom supports 2, make the resistance value of device can change, thereby adjust the rotational speed of rotating motor 4, specification nameplate 15 is fixed at the outer wall of surge device 14, make the device convenient to use person know the operation mode, make the device convenient to use person operate, the improvement security performance of the explosion-proof fan of a Variable Frequency Speed Governing (VFSG) asynchronous motor is realized with the function of being convenient for.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an explosion-proof fan of Variable Frequency Speed Governing (VFSG) asynchronous motor, includes fan housing (1), its characterized in that: the novel fan comprises a fan housing (1), wherein two groups of bottom brackets (2) are arranged on the outer wall of the bottom of the fan housing (1), the two groups of bottom brackets (2) are symmetrically distributed on the outer wall of the bottom of the fan housing (1), a fixing piece (3) is arranged on the inner wall of the fan housing (1), a rotating motor (4) is arranged on the inner wall of the fixing piece (3), a rotating shaft (5) is arranged on the outer wall of the rotating motor (4), rotating blades (6) are arranged on the outer wall of the rotating shaft (5), two groups of plug connectors (7) are arranged on the upper end and the lower end of the outer wall of the rotating blades (6) in a symmetrical mode, a plurality of groups of guide grooves (8) are formed in the outer wall of the side face of the fan housing (1), and the guide grooves (8) are symmetrically distributed on the outer wall of the side face of the fan housing (1).

2. The explosion-proof fan of a variable frequency and speed asynchronous motor according to claim 1, wherein: two groups of filter screens (9) are arranged on one side, far away from the guide groove (8), of the side outer wall of the fan housing (1), and the two groups of filter screens (9) are symmetrically distributed on one side, far away from the guide groove (8), of the side outer wall of the fan housing (1).

3. An explosion-proof fan of a variable frequency speed regulating asynchronous motor as claimed in claim 2, wherein: the inner wall of the filter screen (9) is provided with a plurality of groups of guide bulges (10), and the guide bulges (10) are uniformly distributed on the inner wall of the filter screen (9).

4. The explosion-proof fan of a variable frequency and speed asynchronous motor according to claim 1, wherein: the inner wall of the bottom bracket (2) is provided with a resistor (11), and the outer wall of the resistor (11) is provided with a plurality of groups of scale marks (12).

5. The explosion-proof fan of the variable-frequency speed-regulating asynchronous motor according to claim 4, wherein: a rotary button (13) is arranged on one side of the outer wall of the resistor (11) away from the scale marks (12).

6. The explosion-proof fan of the variable-frequency speed-regulating asynchronous motor according to claim 4, wherein: the electric surge device is characterized in that a surge device (14) is arranged on one side, far away from the resistor (11), of the inner wall of the bottom bracket (2), and a specification nameplate (15) is arranged on the outer wall of the surge device (14).

7. The explosion-proof fan of a variable frequency and speed asynchronous motor according to claim 1, wherein: two groups of long grooves (16) are formed in the outer wall of the bottom support (2), and telescopic rods (17) are arranged on the inner wall of the top of each long groove (16).

8. The explosion-proof fan of the variable frequency speed control asynchronous motor as claimed in claim 7, wherein: the outer wall of the bottom of the telescopic rod (17) is provided with a universal wheel (18).