CN215109606U

CN215109606U - Helical blade air compression type centrifugal fan

Info

Publication number: CN215109606U
Application number: CN202121245385.XU
Authority: CN
Inventors: 蔡国亮
Original assignee: Jiangsu Xideli Draught Fan Co ltd
Current assignee: Jiangsu Xideli Draught Fan Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-12-10
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a helical blade compressed air centrifugal fan, comprising a motor and a base, the motor is mounted on the upper end of the base, the right end of the motor is provided with a casing, the lower end of the casing is provided with an air outlet, the casing An impeller is arranged inside the casing, an air inlet is arranged on the right end of the casing, and an air inlet adjustment device is arranged at the right end of the air inlet. B, threaded sleeve, sealing ring A and sealing ring B, the bellows is connected to the right end of the air inlet, and the right end of the bellows is provided with an air guide pipe, compared with the prior art, the beneficial effect of the present utility model is: : The utility model is provided with an air inlet adjustment device at the air inlet of the traditional compressed air centrifugal fan, which can flexibly change the direction of the air inlet and adjust the air inlet volume, thereby enhancing the flexibility of the centrifugal fan and improving the work efficiency.

Description

Helical blade air compression type centrifugal fan

Technical Field

The utility model belongs to the technical field of the fan is relevant, concretely relates to helical blade pneumatics formula centrifugal fan.

Background

The spiral blade air-compressing centrifugal fan is a driven fluid machine, which relies on the input mechanical energy to increase the air pressure and discharge the air. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The prior helical blade air-compression type centrifugal fan technology has the following problems: the air inlet of the traditional centrifugal fan needs to be butted with a fixed pipeline in the use process, but the direction of the air inlet is fixed, so that the air inlet cannot be flexibly adjusted, the traditional centrifugal fan is difficult to adapt to the complex and changeable environment, the air inlet volume of the air inlet is always certain, and the low working efficiency is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a helical blade presses gas formula centrifugal fan to solve the fixed problem of traditional centrifugal fan air intake direction and intake in the use that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a helical blade air compression type centrifugal fan comprises a motor and a base, wherein the motor is installed at the upper end of the base, a shell is arranged at the right end of the motor, an air outlet is formed in the lower end of the shell, an impeller is arranged inside the shell, an air inlet is formed in the right end of the shell, an air inlet adjusting device is arranged at the right end of the air inlet and comprises a corrugated pipe, an air guide pipe, an adjusting sheet, a rotating shaft A, a rotating shaft B, a threaded sleeve, a sealing ring A and a sealing ring B, the corrugated pipe is connected to the right end of the air inlet, the air guide pipe is arranged at the right end of the corrugated pipe, the upper end and the lower end of the center of the air guide pipe are respectively provided with the sealing ring A and the sealing ring B, the upper side of the sealing ring A is provided with the threaded sleeve, the adjusting sheet is arranged inside the air guide pipe, the lower end of the adjusting sheet is provided with the rotating shaft B, the lower end of the rotating shaft B penetrates through the air guide pipe and is arranged inside the sealing ring B, the upper end of the adjusting sheet is provided with a rotating shaft A, and the upper end of the rotating shaft A sequentially penetrates through the air guide pipe, the sealing ring A and the threaded sleeve.

Preferably, the lower end of the base is provided with a layer of non-slip mat, the non-slip mat is made of soft rubber, and the base is fixedly connected with the motor through screws.

Preferably, the centers of circles of the output shaft of the motor, the impeller and the air inlet are on the same horizontal line, and the shell is made of an aluminum alloy material.

Preferably, the lower end of the sealing ring B is completely sealed, and the rotating shaft a and the rotating shaft B can rotate inside the sealing ring a and the sealing ring B respectively.

Preferably, the diameter of the adjusting sheet is smaller than the diameter of the cross section of the air guide pipe, and the corrugated pipe can be stretched to adjust the direction.

Preferably, the outermost edge of the impeller does not contact the inner wall of the casing, and the outside of the casing is treated by painting.

Compared with the prior art, the utility model provides a helical blade pneumatics formula centrifugal fan possesses following beneficial effect:

1. the utility model discloses set up air inlet adjusting device at traditional air-compression centrifugal fan's air intake, can change the intake and the direction of air inlet, centrifugal fan relies on the mechanical energy of input, improve gas pressure and discharge gaseous machinery, widely used in the mill, the mine, the tunnel, the cooling tower, the vehicle, the ventilation of boats and ships and building, dust exhaust and cooling etc., the business turn over wind gap is connected corresponding pipeline respectively, but because the business turn over wind gap is fixed, there is certain limitation when connecting the pipeline, and traditional centrifugal fan can't adjust the intake, can cause the energy to be wasted, inefficiency, this air inlet adjusting device can change the air intake direction and adjust the intake flexibly, the flexibility of centrifugal fan has been strengthened, work efficiency is improved;

2. the utility model discloses buckle device uses the flow as follows: after the air outlet is in butt joint with an air outlet pipeline, but the pipeline in butt joint with the air inlet is not in an ideal position, the corrugated pipe can be stretched or shortened at the moment, the direction of the corrugated pipe can be adjusted at will to be in butt joint with a corresponding pipeline, if the air quantity needs to be adjusted, the rotating shaft A is rotated, the adjusting sheet in the air guide pipe is rotated along with the rotating shaft A, the adjusting sheet is rotated to be parallel to the pipeline, the air quantity at the moment is maximum, the adjusting sheet is rotated to be perpendicular to the pipeline, the air quantity does not exist at the moment, and the air quantity can be adjusted at will between the adjusting sheet and the pipeline.

Drawings

Fig. 1 is a schematic front view of a helical blade pneumatic centrifugal fan according to the present invention;

fig. 2 is a schematic side view of the helical blade pneumatic centrifugal fan of the present invention;

FIG. 3 is a schematic view of the front view structure of the adjusting device of the present invention;

FIG. 4 is a schematic view of the internal structure of the adjusting device of the present invention;

FIG. 5 is a schematic side view of the adjusting device of the present invention;

in the figure: 1. a base; 2. a motor; 3. a housing; 4. an air outlet; 5. an air inlet; 6. an air inlet adjusting device; 7. an impeller; 8. a bellows; 9. an air guide pipe; 10. a regulating sheet; 11. a rotating shaft A; 12. a threaded sleeve; 13. a sealing ring A; 14. a rotating shaft B; 15. and a sealing ring B.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a kind of helical blade air-compression type centrifugal fan, including electrical machinery 2 and base 1, the electrical machinery 2 is installed on upper end of the base 1, the bottom end of the base 1 has a layer of non-slip mat, the non-slip mat is made of soft rubber, can make the centrifugal fan reach the stability in the work, base 1 and electrical machinery 2 pass the screw fixed connection, strengthen the stability of the electrical machinery 2, guarantee the normal operation of the fan, the right end of the electrical machinery 2 has outer casings 3, the bottom end of the outer casing 3 has air outlets 4, there are impellers 7 inside the outer casing 3, the output shaft of the electrical machinery 2, the centre of a circle of the impeller 7 and air intake 5 are on the same horizontal line, increase the working efficiency of the centrifugal fan, reduce the loss, the outer casing 3 is made of aluminum alloy material, have good corrosion resistance, the intensity is high, the density is low, the quality is lighter, the right-hand member of the outer casing 3 has air intake 5, the outmost edge of the impeller 7 does not contact with inner wall of the outer casing 3, the impeller 7 is ensured not to be damaged when rotating fast, the outer part of the shell 3 is treated by spraying paint, the equipment is more beautiful and prevented from rusting and corrosion, the right end of the air inlet 5 is provided with an air inlet adjusting device 6, the air inlet adjusting device 6 comprises a corrugated pipe 8, an air guide pipe 9, an adjusting sheet 10, a rotating shaft A11, a rotating shaft B14, a threaded sleeve 12, a sealing ring A13 and a sealing ring B15, the corrugated pipe 8 is connected with the right end of the air inlet 5, the right end of the corrugated pipe 8 is provided with the air guide pipe 9, the upper end and the lower end of the center of the air guide pipe 9 are respectively provided with the sealing ring A13 and the sealing ring B15, the upper side of the sealing ring A13 is provided with the threaded sleeve 12, the adjusting sheet 10 is arranged inside the air guide pipe 9, the diameter of the adjusting sheet 10 is smaller than the cross section diameter of the air guide pipe 9, friction is avoided, the rotation is convenient, the corrugated pipe 8 can be stretched to adjust the direction, the air inlet direction of the fan is flexible and changeable, the application condition is rich, the lower end of the adjusting sheet 10 is provided with a rotating shaft B14, the lower end of the rotating shaft B14 penetrates through the air guide pipe 9 and is arranged inside the sealing ring B15, the upper end of the adjusting sheet 10 is provided with a rotating shaft A11, the upper end of the rotating shaft A11 penetrates through the air guide pipe 9, the sealing ring A13 and the threaded sleeve 12 in sequence, the lower end of the sealing ring B15 is completely sealed, loss of air intake is reduced, work efficiency is guaranteed, the rotating shaft A11 and the rotating shaft B14 can rotate inside the sealing ring A13 and the sealing ring B15 respectively, and air intake can be adjusted conveniently.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, when motor 2 rotates, the impeller 7 of fan is along with rotating, impeller 7 produces centrifugal force when rotatory and throws away the air from impeller 7, the air collects inside shell 3 after throwing away from impeller 7, because speed is slow, pressure is high, the air just flows in the pipeline from 4 discharges of centrifugal fan air outlet, after the air in impeller 7 is discharged, just formed the negative pressure, the air of 5 outsides of air intake is impressed again under the atmospheric pressure effect in impeller 7, therefore, impeller 7 constantly rotates, the air also is under centrifugal fan's effect, constantly flow in the pipeline.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A helical blade compressed air centrifugal fan, comprising a motor (2) and a base (1), characterized in that: the motor (2) is installed on the upper end of the base (1), and the right end of the motor (2) is provided with There is a casing (3), the lower end of the casing (3) is provided with an air outlet (4), the interior of the casing (3) is provided with an impeller (7), and the right end of the casing (3) is provided with an air inlet ( 5), the right end of the air inlet (5) is provided with an air inlet adjustment device (6), and the air inlet adjustment device (6) includes a corrugated pipe (8), an air guide pipe (9), and an adjustment sheet (10) , shaft A (11), shaft B (14), threaded sleeve (12), sealing ring A (13) and sealing ring B (15), the bellows (8) is connected to the right end of the air inlet (5), The right end of the bellows (8) is provided with an air guide pipe (9), and the upper and lower ends of the center of the air guide pipe (9) are respectively provided with a sealing ring A (13) and a sealing ring B (15), so The upper side of the sealing ring A (13) is provided with a threaded sleeve (12), the inside of the air duct (9) is provided with an adjusting piece (10), and the lower end of the adjusting piece (10) is provided with a rotating shaft B ( 14), the lower end of the rotating shaft B (14) penetrates the air duct (9) and is arranged inside the sealing ring B (15), the upper end of the adjusting sheet (10) is provided with the rotating shaft A (11), the The upper end of the rotating shaft A (11) passes through the air duct (9), the sealing ring A (13) and the threaded sleeve (12) in sequence.

2. A helical blade compressed air centrifugal fan according to claim 1, characterized in that: the lower end of the base (1) is provided with a layer of anti-skid pads, the anti-skid pads are made of soft rubber, and the base (1) and the motor (2) are fixedly connected by screws.

3. A helical blade compressed air centrifugal fan according to claim 1, characterized in that: the center of the output shaft of the motor (2), the impeller (7) and the air inlet (5) are on the same horizontal line, so The casing (3) is made of aluminum alloy material.

4. A helical blade compressor type centrifugal fan according to claim 1, characterized in that: the lower end of the sealing ring B (15) is completely sealed, and the rotating shaft A (11) and the rotating shaft B (14) can be respectively Rotate inside seal ring A (13) and seal ring B (15).

5. A helical blade compressor type centrifugal fan according to claim 1, characterized in that: the diameter of the regulating piece (10) is smaller than the cross-sectional diameter of the air duct (9), and the bellows (8) Stretch adjustment direction is possible.

6. A helical blade compressor type centrifugal fan according to claim 1, characterized in that: the outermost edge of the impeller (7) is not in contact with the inner wall of the casing (3), and the outside of the casing (3) Treated by spray painting.