CN211230933U

CN211230933U - Double-suction centrifugal blower

Info

Publication number: CN211230933U
Application number: CN201922092607.8U
Authority: CN
Inventors: 王行高; 王秀华
Original assignee: Nantong Pratt Turbine Technology Co ltd
Current assignee: Nantong Pratt Turbine Technology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-11
Anticipated expiration: 2029-11-28

Abstract

The utility model belongs to the technical field of the air-blower, especially, be a double suction type centrifugal blower, the on-line screen storage device comprises a base, the middle part fixed mounting on base top has the centrifugal chamber, one side in centrifugal chamber runs through the bearing frame and is fixed with the integral key shaft, the one end of integral key shaft is connected with the carousel with one heart, the avris of carousel is around having centrifugal blade, the other end activity of integral key shaft has concatenated first clutch disc, be equipped with the ring channel on the first clutch disc, the top of centrifugal chamber one side is passed through the axle bed activity and is hit in succession and have the shift fork, the both sides of circular arc slider activity gomphosis ring. The utility model discloses at the stage that the fan just started, at first starter motor, when waiting to motor normal operating, rethread second clutch disc drives first clutch disc and integral key shaft, carousel and centrifugal blade operation, avoids producing the impact to the electric wire netting to wind pressure and wind volume are sufficient, realize steady start-up and operation.

Description

Double-suction centrifugal blower

Technical Field

The utility model relates to an air-blower technical field specifically is a double suction type centrifugal blower.

Background

The centrifugal fan is a driven fluid machine which is used for ventilating, dust discharging and cooling factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilating and draught air of boilers and industrial kilns, cooling and ventilating air conditioning equipment and household electrical equipment, drying and sorting grains, inflating and propelling wind tunnel wind sources and air cushion boats and the like; the centrifugal fan is based on the principle of converting kinetic energy into potential energy, and utilizes the high-speed rotating impeller to accelerate gas, then decelerate and change flow direction to convert kinetic energy into potential energy (pressure).

The present centrifugal blower of the double suction type has the following problems:

1. at the stage of just starting a fan, a motor of the conventional double-suction centrifugal blower needs large current, so that impact is easily generated on a power grid at the moment, and the wind pressure is insufficient.

2. When the conventional double-suction centrifugal blower does not need primary pressurization, the normal flow of air is influenced by a pressurization part, so that the power and the air pressure are reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a double suction type centrifugal blower has solved present double suction type centrifugal blower in the stage that the fan just started, and the motor needs the heavy current, produces the impact to the electric wire netting easily this moment to it is not enough to cause the wind pressure, and when need not carrying out the one-level pressure boost, its part of using the pressure boost can influence the problem that the air normally flows.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a double-suction centrifugal blower comprises a base, a centrifugal cavity is fixedly arranged in the middle of the top end of the base, a spline shaft penetrates and is fixed on one side of the centrifugal cavity through a bearing seat, one end of the spline shaft is concentrically connected with a rotary table, the side of the rotary table is surrounded with centrifugal blades, the other end of the spline shaft is movably connected with a first clutch disc in series, the first clutch disc is provided with an annular groove, the top end of one side of the centrifugal cavity is movably connected with a shifting fork through a shaft seat, the bottom end of the shifting fork is movably embedded with the two sides of the annular groove through an arc sliding block, one side of the top end of the base is fixedly provided with a motor, a rotor shaft of the motor is connected with a second clutch disc in a penetrating way, the second clutch disc is attached to the first clutch disc, the centrifugal fan is characterized in that an air inlet is formed in the other side of the centrifugal cavity, a flow guide box is axially connected to the air inlet, and an axial flow fan is installed at the opening end of the flow guide box.

As a preferred technical scheme of the utility model, the flow guide box is the rectangular pipe body, three vertical scroll, three are run through at the middle part of flow guide box the middle part of vertical scroll has all concatenated the grid board, three the poking rod has all concatenated on the top of vertical scroll, one side spiral shell on flow guide box top is closed and is connected with adjusting bolt, adjusting bolt passes through the connecting rod and connects three simultaneously the poking rod.

As an optimal technical scheme of the utility model, one side on centrifugal cavity top is equipped with the electromagnetism telescopic link, the telescopic shaft swing joint of electromagnetism telescopic link the top of shift fork.

As an optimized technical scheme of the utility model, one side of centrifugal chamber is equipped with the air outlet, the avris of air outlet is flange.

As an optimal technical scheme of the utility model, the flow guide box passes through the hinge mechanism fixed connection one side of axial fan, the flow guide box passes through hasp swing joint axial fan's opposite side.

(III) advantageous effects

Compared with the prior art, the utility model provides a double suction type centrifugal blower possesses following beneficial effect:

1. this double suction type centrifugal blower at the stage that the fan just started, at first the starter motor, when waiting for the motor normal operating, rethread second clutch disc drives first clutch disc and integral key shaft, carousel and centrifugal blade operation, avoids producing the impact to the electric wire netting to wind pressure and wind volume are sufficient, realize steady start-up and operation.

2. This double suction type centrifugal blower adopts the technical scheme that the guide box passes through the hinge mechanism fixed connection axial fan's one side, and the guide box passes through hasp swing joint axial fan opposite side, when needing axial fan pressurization, withstands the opening of guide box with axial fan lock through the hinge mechanism and locks with the hasp, when not needing axial fan to pressurize the air current, unclamp the hasp, then upset axial fan can, convenient and fast.

Drawings

FIG. 1 is a schematic side view of the subjective structure of the present invention;

FIG. 2 is a schematic view of the other side of the subjective structure of the present invention;

fig. 3 is a schematic view of the partial cross-sectional structure of the present invention.

In the figure: 1. a base; 2. a centrifugal chamber; 3. a spline shaft; 4. a turntable; 5. a centrifugal blade; 6. a first clutch disc; 7. an annular groove; 8. a shifting fork; 9. a circular arc slider; 10. an electric motor; 11. a second clutch plate; 12. an air inlet; 13. a flow guide box; 14. an axial flow fan; 15. a vertical shaft; 16. a grid plate; 17. a poke rod; 18. adjusting the bolt; 19. an electromagnetic telescopic rod; 20. an air outlet; 21. a hinge mechanism; 22. and (5) locking.

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.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a double suction type centrifugal blower, which comprises a base 1, the middle part fixed mounting on base 1 top has centrifugal chamber 2, one side of centrifugal chamber 2 runs through being fixed with integral key shaft 3 through the bearing frame, the one end of integral key shaft 3 is connected with carousel 4 with one heart, the avris of carousel 4 has centrifugal blade 5 around, the other end activity of integral key shaft 3 has concatenated first clutch disc 6, be equipped with ring channel 7 on the first clutch disc 6, the top of centrifugal chamber 2 one side has shift fork 8 through axle bed activity link stroke, the bottom of shift fork 8 passes through the both sides of circular arc slider 9 activity gomphosis ring channel 7, one side fixed mounting on base 1 top has motor 10, motor 10's rotor shaft has worn to have second clutch disc 11, second clutch disc 11 laminates first clutch disc 6, the opposite side of centrifugal chamber 2 is equipped with air intake 12, air intake 12 axial connection has guide box 13, axial fan 14 is installed to.

In this embodiment, at the stage when the fan is just started, the motor 10 needs a large current, and at this time, an impact is easily generated on the power grid, and the wind pressure is insufficient, so the motor 10 needs to be started first, and when the motor 10 operates normally, the second clutch disc 11 drives the first clutch disc 6, the spline shaft 3, the rotary disc 4, and the centrifugal blades 5 to operate, so as to achieve smooth start and operation, at this time, a normal pressure airflow enters from the air inlet 12 axially, the air changes to the radial direction when flowing through the centrifugal blades 5, the air changes the flowing direction to cause deceleration, and this deceleration action converts the kinetic energy into pressure potential energy, so that the air pressure under normal pressure is blown into a high pressure airflow in the centrifugal cavity 2, when the pressure in the centrifugal cavity 2 cannot meet the required requirements, or the air volume of the air inlet 12 is insufficient, the axial flow fan 14 is started to suck the, on one hand, the air inlet amount is increased, and on the other hand, the air pressure of the inlet air is increased.

Specifically, the flow guide box 13 is a rectangular pipe body, three vertical shafts 15 penetrate through the middle of the flow guide box 13, grid plates 16 are connected in series to the middle of each vertical shaft 15, poke rods 17 are connected in series to the top ends of the three vertical shafts 15, adjusting bolts 18 are screwed to one side of the top end of the flow guide box 13, and the adjusting bolts 18 are simultaneously connected with the three poke rods 17 through connecting rods.

In this embodiment, when the adjusting bolt 18 is screwed to rotate, the connecting rod drives three poke rods 17 to deflect, so that the three vertical shafts 15 drive the grille plates 16 to deflect, thereby adjusting the intake air amount.

Specifically, one side of the top end of the centrifugal cavity 2 is provided with an electromagnetic telescopic rod 19, and a telescopic shaft of the electromagnetic telescopic rod 19 is movably connected with the top end of the shifting fork 8.

In this embodiment, under the normality, electromagnetic telescopic rod 19 promotes the top of shift fork 8 through its self spring, through the diversion of lever, circular arc slider 9 that 8 bottoms of shift fork are connected drives first clutch disc 6 and the separation of second clutch disc 11, carry out the actuation when electromagnetic telescopic rod 19 circular telegram, drive first clutch disc 6 and the friction connection of second clutch disc 11, motor 10 just drives carousel 4 and centrifugal blade 5 and rotates this moment, realize centrifugal blast air, so motor 10 just can realize underload start or no load start, avoid starting the power in the twinkling of an eye not enough or produce great impact to the electric wire netting.

Specifically, one side of the centrifugal cavity 2 is provided with an air outlet 20, and the side of the air outlet 20 is provided with a connecting flange.

In this embodiment, the air outlet 20 is used for guiding out the air flow pressurized by centrifugation, and conveying the pressurized air flow through the connecting flange and the air guide pipeline.

Specifically, the guide box 13 is fixedly connected to one side of the axial flow fan 14 through a hinge mechanism 21, and the guide box 13 is movably connected to the other side of the axial flow fan 14 through a lock 22.

In this embodiment, in order to avoid axial fan 14 to influence the flow of normal air current, just need to remove axial fan 14 sometimes, the utility model discloses a guide box 13 passes through one side of hinge mechanism 21 fixed connection axial fan 14, and guide box 13 passes through the technical scheme of hasp 22 swing joint axial fan 14's opposite side, and when needs axial fan 14 pressurization, with axial fan 14 through the opening of hinge mechanism 21 lock live guide box 13 and lock with hasp 22, when not needing axial fan 14 to pressurize for the air current, unclamp hasp 22, then upset axial fan 14 can, convenient and fast.

The spline shaft 3 and the electromagnetic telescopic rod 19 in the present embodiment are known technologies that have been disclosed and widely used in industrial production and daily life.

The utility model discloses a theory of operation and use flow: at the stage of the fan just starting, the motor 10 needs a large current, and at this time, the electric network is easily impacted, and the wind pressure is insufficient, so the motor 10 needs to be started first, when the motor 10 runs normally, the electromagnetic telescopic rod 19 pushes the top end of the shifting fork 8 through the spring of the electromagnetic telescopic rod, the circular arc slide block 9 connected with the bottom end of the shifting fork 8 drives the first clutch disc 6 to separate from the second clutch disc 11 through the direction change of the lever, when the electromagnetic telescopic rod 19 is powered on, the electromagnetic telescopic rod is sucked, the first clutch disc 6 is driven to be in frictional connection with the second clutch disc 11, at this time, normal pressure airflow enters from the air inlet 12 axially, the air changes to the radial direction when flowing through the centrifugal blade 5, the air changes the flowing direction to cause deceleration, the deceleration function converts kinetic energy into pressure potential energy, so the air pressure under the normal pressure is blown to be high pressure airflow in the centrifugal cavity 2, and, or when the air volume of the air inlet 12 is insufficient, the axial flow fan 14 is started to suck the external normal pressure atmosphere into the air inlet, so that the air inlet volume is increased, and the air pressure of the air inlet is increased. Therefore, the motor 10 can realize light load starting or no load starting, and avoid insufficient power at the moment of starting or larger impact on a power grid, the technical scheme that the flow guide box 13 is fixedly connected with one side of the axial flow fan 14 through the hinge mechanism 21, and the flow guide box 13 is movably connected with the other side of the axial flow fan 14 through the lock catch 22 is adopted, when the axial flow fan 14 is required to be pressurized, the axial flow fan 14 is buckled with the opening of the flow guide box 13 through the hinge mechanism 21 and is locked by the lock catch 22, when the axial flow fan 14 is not required to pressurize air flow, the lock catch 22 is loosened, and then the axial flow fan 14 is turned over, so that.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double suction type centrifugal blower, includes base (1), its characterized in that: the middle of the top end of the base (1) is fixedly provided with a centrifugal cavity (2), one side of the centrifugal cavity (2) is fixedly provided with a spline shaft (3) in a penetrating way through a bearing seat, one end of the spline shaft (3) is concentrically connected with a turntable (4), centrifugal blades (5) are wound around the side of the turntable (4), the other end of the spline shaft (3) is movably connected with a first clutch disc (6) in series, an annular groove (7) is formed in the first clutch disc (6), the top end of one side of the centrifugal cavity (2) is movably connected with a shifting fork (8) through the shaft seat, the bottom end of the shifting fork (8) is movably embedded with the two sides of the annular groove (7) through an arc sliding block (9), one side of the top end of the base (1) is fixedly provided with a motor (10), a rotor shaft of the motor (10) is connected with a second clutch disc (11) in a penetrating way, the second, an air inlet (12) is formed in the other side of the centrifugal cavity (2), a flow guide box (13) is axially connected to the air inlet (12), and an axial flow fan (14) is installed at the opening end of the flow guide box (13).

2. A double suction centrifugal blower according to claim 1, characterized in that: the utility model discloses a water conservancy diversion case, including flow guide box (13), three vertical scroll (15), three are run through in the middle part of flow guide box (13), three the middle part of vertical scroll (15) has all concatenated grid board (16), three the top of vertical scroll (15) has all concatenated poker rod (17), one side spiral shell joint on flow guide box (13) top is connected with adjusting bolt (18), adjusting bolt (18) pass through the connecting rod and connect three simultaneously poker rod (17).

3. A double suction centrifugal blower according to claim 1, characterized in that: one side on centrifugal cavity (2) top is equipped with electromagnetism telescopic link (19), the telescopic shaft swing joint of electromagnetism telescopic link (19) the top of shift fork (8).

4. A double suction centrifugal blower according to claim 1, characterized in that: one side of the centrifugal cavity (2) is provided with an air outlet (20), and the side of the air outlet (20) is provided with a connecting flange.

5. A double suction centrifugal blower according to claim 1, characterized in that: the flow guide box (13) is fixedly connected with one side of the axial flow fan (14) through a hinge mechanism (21), and the flow guide box (13) is movably connected with the other side of the axial flow fan (14) through a lock catch (22).