CN213064014U

CN213064014U - High-efficient high-pressure centrifugal fan

Info

Publication number: CN213064014U
Application number: CN202021622857.4U
Authority: CN
Inventors: 顾东海
Original assignee: Shanghai Walker General Equipment Co ltd
Current assignee: Shanghai Walker General Equipment Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-27
Anticipated expiration: 2030-08-06

Abstract

The utility model relates to a high-efficient high-pressure centrifugal fan, it includes the centrifugal fan body, the centrifugal fan body rotates and is provided with the impeller, be formed with air intake and air outlet on the centrifugal fan body, the inboard that the centrifugal fan body is close to the air outlet can be dismantled and be connected with an album aerofoil, the exhaust groove has been seted up on the lateral wall that the centrifugal fan body is close to an album aerofoil, can dismantle on the centrifugal fan body and be provided with the collection bellows that is used for collecting the exhaust air in groove of airing exhaust, the blast hole has been seted up on one side that the centrifugal fan body deviates from the air intake, the axis of blast hole is parallel with the air inlet direction of air intake, blast hole and collection bellows intercommunication, the ventilation groove has been seted up on the impeller, ventilation groove and blast hole. This application helps producing the thrust through the air to reduce the axial force, improve the effect of bearing life-span.

Description

High-efficient high-pressure centrifugal fan

Technical Field

The application relates to the technical field of centrifugal fans, in particular to a high-efficiency high-pressure centrifugal fan.

Background

At present, a centrifugal fan is a driven fluid machine which increases gas pressure and discharges gas by means of input mechanical energy. 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.

In the related art, when the centrifugal fan operates, the motor drives the impeller to rotate in the casing, and air is sucked from the center of the impeller through the air suction port. The pressure and speed of the gas are increased due to the power action of the blades on the gas, and the gas is thrown to the machine shell along the blade channel under the action of centrifugal force and is discharged from the gas outlet.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that the high pressure fan generates a large axial force during operation, and the axial force greatly increases the equivalent load of the bearing, which results in a reduction in the life of the bearing and a reduction in reliability.

SUMMERY OF THE UTILITY MODEL

In order to improve the great axial force of high pressure positive blower operation production, the equivalent load of axial force increase bearing leads to the bearing life-span to reduce, and the reliability reduces, this application provides a high-efficient high pressure centrifugal fan.

The application provides a high-efficient high-pressure centrifugal fan adopts following technical scheme:

the utility model provides a high-efficient high-pressure centrifugal fan, includes the centrifugal fan body, the centrifugal fan body rotates and is provided with the impeller, be formed with air intake and air outlet on the centrifugal fan body, the inboard that the centrifugal fan body is close to the air outlet can be dismantled and be connected with an album aerofoil, the exhaust groove has been seted up on the lateral wall that the centrifugal fan body is close to an album aerofoil, can dismantle on the centrifugal fan body and be provided with the collection bellows that is used for collecting the exhaust air in groove of airing exhaust, the blast hole has been seted up on one side that the centrifugal fan body deviates from the air intake, the axis of blast hole is parallel with the air inlet direction of air intake, blast hole and collection bellows intercommunication, the ventilation groove has been seted up on the impeller, ventilation groove and.

Through adopting above-mentioned technical scheme, in the application, the air inhales from the impeller center through the air intake, then discharges through the air outlet again, and the air is collected to the collection aerofoil, and later the air gets into collection bellows through the groove of airing exhaust, and the air blows to the ventilation groove via the supply-air hole in the collection bellows afterwards, helps producing the thrust through the air to reduce the axial force, improve the bearing life-span.

Preferably, the wind collecting plate is provided with a first fixing bolt, a screw of the first fixing bolt sequentially penetrates through the wind collecting plate and the centrifugal fan body, one end of the first fixing bolt, which deviates from the nut, is in threaded connection with a nut, and one end of the nut abuts against the centrifugal fan body tightly.

Through adopting above-mentioned technical scheme, by the fixed wind-collecting plate of first fixing bolt and nut, convenience when helping promoting the fixed wind-collecting plate of staff.

Preferably, a guide block is fixed between the wind collecting plate and the centrifugal fan body, and a guide arc surface for guiding air to pass through the exhaust groove is formed on the guide block.

Through adopting above-mentioned technical scheme, guide the arc by the guide on the guide piece and guide to the air, help preventing that the air from producing the vortex in the contained angle department of wind-collecting plate and centrifugal fan body, promote the rate of utilization of air.

Preferably, the side of the air collecting box extends to form a fixed edge, a second fixing bolt is arranged on the fixed edge, and a screw of the second fixing bolt penetrates through the fixed edge to be connected with the centrifugal fan body in a threaded mode.

Through adopting above-mentioned technical scheme, fixed limit is fixed by second fixing bolt, helps promoting the stability of album of wind box on the centrifugal fan body.

Preferably, a guide plate is arranged in the air collecting box and aligned with the air exhaust groove.

Through adopting above-mentioned technical scheme, carry out the water conservancy diversion to the air by the guide plate, help preventing that the air through the exhaust duct from assaulting album wind box and producing great noise simultaneously.

Preferably, an air supply pipe is fixed on the air collection box and is communicated with the air supply hole.

Through adopting above-mentioned technical scheme, by blast pipe and supply-air outlet intercommunication, help promoting the convenience that the staff communicates blast pipe and supply-air outlet.

Preferably, a guide pipe is arranged between the air supply pipe and the air supply hole, one end of the guide pipe is connected with the air supply pipe, and the other end of the guide pipe is connected with the air supply hole.

Through adopting above-mentioned technical scheme, carry the air by the pipe, help promoting air transportation's stability.

Preferably, the ventilation grooves are uniformly arranged around the axis of the impeller at intervals.

Through adopting above-mentioned technical scheme, conduct the air by a plurality of ventilation grooves, help keeping the continuous conduction of axial air.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by the setting of collection aerofoil, collection bellows, supply-air hole and ventilation groove, help producing the thrust of reaction through the air to reduce the axial force, improve the bearing life-span.

Drawings

FIG. 1 is a schematic view of an overall structure of a high-efficiency high-pressure centrifugal fan;

FIG. 2 is a cross-sectional view of a structure embodying primarily a baffle;

FIG. 3 is a schematic view of a construction of a wind collecting box mainly embodied;

fig. 4 is a schematic view mainly showing the structure of the vent groove.

Reference numerals: 1. a centrifugal fan body; 11. an air inlet; 12. an air outlet; 13. an exhaust duct; 14. an air supply hole; 2. an impeller; 21. a ventilation slot; 3. a wind-collecting plate; 31. a first fixing bolt; 311. a nut; 32. a vertical side; 33. an inclined edge; 4. an air collecting box; 41. fixing the edge; 411. a second fixing bolt; 42. a baffle; 43. an air supply pipe; 5. a conduit; 6. a guide block; 61. and guiding the cambered surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses high-efficient high-pressure centrifugal fan.

Referring to fig. 1 and 2, a high-efficient high-pressure centrifugal fan, including centrifugal fan body 1, centrifugal fan body 1 rotates and is provided with impeller 2, be formed with air intake 11 and air outlet 12 on the centrifugal fan body 1, centrifugal fan body 1 can be dismantled near the inboard of air outlet 12 and be connected with wind-collecting plate 3, exhaust groove 13 has been seted up on centrifugal fan body 1 is close to the lateral wall of wind-collecting plate 3, can dismantle on the centrifugal fan body 1 and be provided with the wind-collecting box 4 that is used for collecting exhaust groove 13 exhaust air, air supply hole 14 (refer to fig. 3) has been seted up on centrifugal fan body 1 deviates from one side of air intake 11, the axis of air supply hole 14 is parallel with the air inlet direction of air intake 11, air supply hole 14 and wind-collecting box 4 intercommunication, ventilation groove 21 (refer to fig. 4) has been seted up on impeller 2.

In operation, air is sucked from the center of the impeller 2 through the air inlet 11 and then is exhausted through the air outlet 12, the air is collected by the air collecting plate 3, then the air enters the air collecting box 4 through the air exhaust groove 13, and then the air in the air collecting box 4 is blown to the ventilation groove 21 through the air blowing hole 14.

Referring to fig. 2 and 3, the wind collecting plate 3 includes a vertical edge 32 and an inclined edge 33, one end of the inclined edge 33 and the vertical edge 32 are integrally formed, the other end of the inclined edge 33 inclines towards the center close to the air outlet 12, the two ends of the vertical edge 32 in the length direction are provided with first fixing bolts 31, a screw of any first fixing bolt 31 sequentially penetrates through the wind collecting plate 3 and the centrifugal fan body 1, one end of any first fixing bolt 31 departing from a nut is connected with a nut 311 in a threaded manner, and one end of any nut 311 tightly supports the centrifugal fan body 1. A guide block 6 is fixed between the wind collecting plate 3 and the centrifugal fan body 1, a guide cambered surface 61 is formed on the guide block 6, and the orientation of the guide cambered surface 61 is opposite to the air outlet direction of the air outlet 12.

The periphery of the air collecting box 4 extends to form a fixed edge 41, four corners of the fixed edge 41 are provided with second fixing bolts 411, a screw of any second fixing bolt 411 penetrates through the fixed edge 41 to be in threaded connection with the centrifugal fan body 1, one end of the air collecting box 4 in the length direction is fixed with an air supply pipe 43, the air supply pipe 43 is communicated with the inner side of the air collecting box 4 and the outer side of the air collecting box 4, a guide plate 42 is fixed in the air collecting box 4, air entering the air collecting box 4 through an exhaust groove 13 is guided to the air supply pipe 43 by the guide plate 42, a guide pipe 5 is arranged between the air supply pipe 43 and an air supply hole 14, one end of the guide pipe 5 is connected with the air supply pipe 43, and the other end of the. The ventilation grooves 21 are formed as waist-shaped grooves (see fig. 4), and six waist-shaped grooves are uniformly spaced around the axis of the impeller 2.

The implementation principle of the high-efficiency high-pressure centrifugal fan in the embodiment of the application is as follows: in operation, air is sucked from the center of the impeller 2 through the air inlet 11 and then is exhausted through the air outlet 12, the air collecting plate 3 collects part of air passing through the air outlet 12 and then is guided to the air exhaust groove 13 through the guide cambered surface 61 on the guide block 6, the air enters the air collecting box 4 through the air exhaust groove 13, the air in the air collecting box 4 is guided to the air supply pipe 43 through the guide plate for a long time, then the air is transmitted to the air supply hole 14 through the guide pipe 5, and finally the air in the air supply hole 14 is blown out through the air exhaust groove 21 to generate reverse thrust.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high-efficient high-pressure centrifugal fan which characterized in that: comprises a centrifugal fan body (1), wherein an impeller (2) is rotatably arranged on the centrifugal fan body (1), an air inlet (11) and an air outlet (12) are formed on the centrifugal fan body (1), an air collecting plate (3) is detachably connected to the inner side, close to the air outlet (12), of the centrifugal fan body (1), an air exhaust groove (13) is formed in the side wall, close to the air collecting plate (3), of the centrifugal fan body (1), an air collecting box (4) used for collecting air exhausted from the air exhaust groove (13) is detachably arranged on the centrifugal fan body (1), an air supply hole (14) is formed in one side, away from the air inlet (11), of the centrifugal fan body (1), the axis of the air supply hole (14) is parallel to the air inlet direction of the air inlet (11), the air supply hole (14) is communicated with the air collecting box (4), a ventilation groove (21) is formed in the impeller (2), the ventilation groove (21) is communicated with the air supply hole (14).

2. The high-efficiency high-pressure centrifugal fan according to claim 1, wherein: the centrifugal fan is characterized in that a first fixing bolt (31) is arranged on the wind collecting plate (3), a screw rod of the first fixing bolt (31) sequentially penetrates through the wind collecting plate (3) and the centrifugal fan body (1), a nut (311) is connected to one end, deviating from a nut, of the first fixing bolt (31) in a threaded mode, and one end of the nut (311) abuts against the centrifugal fan body (1) tightly.

3. The high-efficiency high-pressure centrifugal fan according to claim 2, wherein: a guide block (6) is fixed between the wind collecting plate (3) and the centrifugal fan body (1), and a guide arc surface (61) used for guiding air to pass through the exhaust groove (13) is formed on the guide block (6).

4. The high-efficiency high-pressure centrifugal fan according to claim 1, wherein: the periphery of air collecting box (4) is extended with fixed edge (41), fixed edge (41) is provided with second fixing bolt (411), and the screw rod of second fixing bolt (411) passes fixed edge (41) and is connected with centrifugal fan body (1) screw thread.

5. The high-efficiency high-pressure centrifugal fan according to claim 1, wherein: a guide plate (42) is arranged in the air collecting box (4), and the guide plate (42) is aligned with the air exhaust groove (13).

6. The high-efficiency high-pressure centrifugal fan according to claim 1, wherein: an air supply pipe (43) is fixed on the air collection box (4), and the air supply pipe (43) is communicated with the air supply hole (14).

7. The high-efficiency high-pressure centrifugal fan according to claim 6, wherein: a guide pipe (5) is arranged between the air supply pipe (43) and the air supply hole (14), one end of the guide pipe (5) is connected with the air supply pipe (43), and the other end of the guide pipe (5) is connected with the air supply hole (14).

8. The high-efficiency high-pressure centrifugal fan according to claim 1, wherein: the ventilation grooves (21) are uniformly arranged around the axis of the impeller (2) at intervals.