CN215109606U - Helical blade air compression type centrifugal fan - Google Patents

Abstract

The utility model discloses a helical blade formula centrifugal fan that pressurizes gas, including motor and base, the upper end at the base is installed to the motor, the right-hand member of motor is provided with the shell, the lower extreme of shell is provided with the air outlet, the inside of shell is provided with the impeller, the right-hand member of shell is provided with the air intake, the right-hand member of air intake is provided with air inlet adjusting device, air inlet adjusting device includes bellows, guide duct, adjustment sheet, pivot A, pivot B, thread bush, sealing washer A and sealing washer B, the right-hand member at the air intake is connected to the bellows, the right-hand member of bellows is provided with the guide duct, compares with prior art, the beneficial effects of the utility model are that: the utility model discloses air intake at traditional compressed air formula centrifugal fan sets up air inlet adjusting device, can change the air intake direction in a flexible way and adjust the intake, has strengthened centrifugal fan's flexibility, has improved 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 (6)

1. The utility model provides a helical blade air-compression formula centrifugal fan, includes motor (2) and base (1), its characterized in that: the air conditioner is characterized in that the motor (2) is installed at the upper end of the base (1), a shell (3) is arranged at the right end of the motor (2), an air outlet (4) is arranged at the lower end of the shell (3), an impeller (7) is arranged inside the shell (3), an air inlet (5) is arranged at the right end of the shell (3), an air inlet adjusting device (6) is arranged at the right end of the air inlet (5), the air inlet adjusting device (6) comprises a corrugated pipe (8), an air guide pipe (9), an adjusting sheet (10), a rotating shaft A (11), a rotating shaft B (14), a threaded sleeve (12), a sealing ring A (13) and a sealing ring B (15), the corrugated pipe (8) is connected to the right end of the air inlet (5), the air guide pipe (9) is arranged at the right end of the corrugated pipe (8), and the upper end and the lower end of the center of the air guide pipe (9) are respectively provided with a sealing ring A (13) and a sealing ring B (15), the upper side of the sealing ring A (13) is provided with a threaded sleeve (12), an adjusting sheet (10) is arranged inside the air guide pipe (9), the lower end of the adjusting sheet (10) is provided with a rotating shaft B (14), the lower end of the rotating shaft B (14) penetrates through the air guide pipe (9) and is arranged inside the sealing ring B (15), the upper end of the adjusting sheet (10) is provided with a rotating shaft A (11), and the upper end of the rotating shaft A (11) penetrates through the air guide pipe (9), the sealing ring A (13) and the threaded sleeve (12) in sequence.

2. The helical blade pneumatic centrifugal fan of claim 1, wherein: the lower end of the base (1) is provided with a layer of non-slip mat, the non-slip mat is made of soft rubber, and the base (1) is fixedly connected with the motor (2) through screws.

3. The helical blade pneumatic centrifugal fan of claim 1, wherein: the circle centers of an output shaft of the motor (2), the impeller (7) and the air inlet (5) are on the same horizontal line, and the shell (3) is made of an aluminum alloy material.

4. The helical blade pneumatic centrifugal fan of claim 1, wherein: 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 rotate inside the sealing ring A (13) and the sealing ring B (15) respectively.

5. The helical blade pneumatic centrifugal fan of claim 1, wherein: the diameter of the adjusting sheet (10) is smaller than the diameter of the cross section of the air guide pipe (9), and the corrugated pipe (8) can be stretched to adjust the direction.

6. The helical blade pneumatic centrifugal fan of claim 1, wherein: 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) is treated by painting.

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