Energy-saving centrifugal blower

Abstract

The invention is suitable for the technical field of air blowers, and provides an energy-saving centrifugal air blower which comprises a machine shell, an air inlet chamber, an impeller assembly, blades, a blade shaft, a pulley, a driving mechanism and a main shaft, the interior of the main shaft is of a hollow structure, the energy-saving centrifugal air blower further comprises an angle regulation and control mechanism, and the angle regulation and control mechanism comprises a control assembly, an adjusting assembly and a rotating assembly; the angle regulation and control mechanism can realize continuous regulation of the inclination angle of the blades, so that the centrifugal blower can cover various working conditions such as'low pressure-large flow 'and'high pressure-small flow' on single equipment, and can approximately efficiently operate under different working conditions without replacing the equipment or additionally arranging a bypass system; the phenomenon that a large horse pulls a small car when a traditional fixed blade fan deviates from a design point is avoided, the traditional single working condition is upgraded to multiple working conditions, the limitation that the traditional fixed blade fan has one function is solved, and the fan has remarkable advantages in the aspects of energy conservation, flexibility, reliability and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of blowers, and in particular relates to an energy-saving centrifugal blower. Background Art

[0002] A centrifugal blower is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal blowers are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and conveying grain; wind tunnel air source and inflation and propulsion of hovercraft.

[0003] The existing centrifugal blower includes a base, an electric motor, a sealing sleeve, a casing, an impeller and blades. The blades are curved, and their curvature radius is 60 to 80. The blades are also provided with wind-gathering frills. The distance between the wind-gathering frills and the blades is 8 to 15 mm, and the distance gradually decreases in the direction approaching the center of the blade. The casing is provided with an air outlet, and the cross-sectional size inside the air outlet is reduced in two steps, and the air outlet is divided into a first boost zone, a stable pressure zone and a second boost zone in the direction of wind flow; the impeller is reasonably designed and has a good wind-blocking effect, which improves the blowing efficiency and reduces energy consumption. The air outlet of the upper casing is reasonably designed, which makes the exhaust more unobstructed, thereby improving the overall working efficiency, thereby achieving the purpose of high efficiency and energy saving.

[0004] Existing blowers achieve energy conservation by adjusting the blades and air outlets, but the blades inside are always fixed to the impeller, which means that the blower can only be used for one purpose, which has certain limitations. To cover different working conditions, users need to purchase multiple fans of different types or add complex bypass adjustment systems, which will lead to an increase in initial equipment investment and take up a lot of installation space.

[0005] Therefore, in view of the above situation, there is an urgent need to develop an energy-saving centrifugal blower to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide an energy-saving centrifugal blower to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An energy-saving centrifugal blower includes a casing, an air inlet chamber is provided inside the casing, an impeller assembly is provided in the air inlet chamber, blades are circumferentially distributed in the middle of the impeller assembly, and blade shafts are fixed at both ends of the blades, one of the blade shafts is rotatably mounted on the impeller assembly, and a pulley is mounted on the other blade shaft, a drive mechanism is provided on the outside of the casing, an output end of the drive mechanism is fixedly connected to a main shaft, one end of the main shaft extends into the casing and is connected to the impeller assembly, and the main shaft has a hollow structure. The blower also includes:

[0009] An angle control mechanism, the angle control mechanism includes a control component, an adjustment component and a rotation component, the control component is arranged on the outside of the casing, one end of the control component is horizontally slidably connected to the inner wall of the main shaft, and one end of the control component is slidably connected to the adjustment component through a circumferential groove distributed circumferentially on the main shaft, the adjustment component is located inside the impeller assembly, one end of the adjustment component is mounted on the outer wall of the main shaft, the other end of the adjustment component is parallel to the impeller assembly and slidably connected to the pulley, one end of the rotation component is fixed to the other end of the adjustment component, and the other end of the rotation component is connected to multiple impellers.

[0010] As a further technical solution of the present invention, the impeller assembly includes a wheel disc, a connecting column and a matching disc. The wheel disc is rotatably installed in the air intake chamber, the wheel disc is fixedly connected to the main shaft, and a matching disc is concentrically fixed to one side of the wheel disc through the connecting column. The blade shaft on one end of the blade is rotatably installed on the wheel disc, and one side of the matching disc is rotatably connected to the adjustment assembly.

[0011] As a further technical solution of the present invention, the control component includes a control motor, a second transmission part, a bracket, a screw, a mounting box, a guide column and a control column. The control motor and the bracket are fixed to the outside of the casing. The output end of the control motor is connected to the screw horizontally mounted on the bracket through the second transmission part. One end of the screw is threadedly connected to the outer wall of the mounting box. The mounting box is horizontally slidably mounted on the bracket through the guide column. One end of the control column is rotatably mounted in the mounting box. The outer wall of the other end of the control column is horizontally slidably connected to the inner wall of the main shaft. Spiral grooves are distributed on the other end of the control column. One end of the adjustment component slides with the spiral groove through the circumferential groove opened on the main shaft.

[0012] As a further technical solution of the present invention, the adjustment assembly includes a connecting sleeve, a connecting rod, an adjustment disk and a sliding column. The connecting sleeve is circumferentially distributed on the outside of the main shaft, two adjacent connecting sleeves are fixedly connected, and a connecting rod is installed between the two adjacent connecting sleeves. One end of the connecting rod is connected to the adjustment disk, and a sliding column is fixed on the inner side of the connecting sleeve. One end of the sliding column passes through the circumferential slide groove and slides with the spiral groove. The adjustment disk is rotatably installed on the mating disk, the adjustment disk is slidably connected to the pulley fixed on the impeller, and the adjustment disk is connected to the rotating assembly.

[0013] As a further technical solution of the present invention, the rotating assembly includes an annular rack and a gear. The annular rack is fixed on the adjusting disk. Gears meshing with it are distributed circumferentially on the outer side of the annular rack. The distribution number and distribution position of the gears and blades are consistent, and the gears are concentrically fixed on the blade shaft.

[0014] As a further technical solution of the present invention, the annular rack, the adjusting disk, the matching disk, the wheel disk and the main shaft are all concentric, and the adjusting disk and the matching disk both adopt an annular block structure.

[0015] As a further technical solution of the present invention, the driving mechanism includes a driving motor and a transmission member 1. The driving motor is arranged on the outside of the casing, and the output end of the driving motor is connected to the outer wall of one end of the main shaft through the transmission member 1.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The rotating assembly cooperates with the control assembly and the adjustment assembly to realize continuous adjustment of the blade inclination angle; when the blade inclination angle increases, the blade inlet side tilts forward in the rotation direction of the impeller assembly, and it approaches the forward blade, and the gas obtains increased centrifugal force, making the blower present a "high pressure-small flow" characteristic; when the blade inclination angle decreases, the blade inlet side tilts backward in the opposite direction of rotation, and it approaches the backward blade, and the gas flow resistance decreases, making the blower present a "low pressure-large flow" characteristic; so that the centrifugal blower can cover "low pressure-large flow" ( It can be used in a variety of working conditions such as "high pressure-low flow" (such as ventilation) and "high pressure-low flow" (such as pneumatic conveying), and can operate with close to high efficiency under different working conditions without replacing equipment or adding a bypass system, avoiding the "big horse pulling a small cart" phenomenon of traditional fixed-blade fans when they deviate from the design point. It is upgraded from the traditional single working condition to the multi-working condition direction, solving the limitation of "one machine for one use" of traditional fixed-blade fans, and has significant advantages in energy saving, flexibility and reliability. It is especially suitable for scenes that require variable working conditions such as industrial ventilation, pneumatic conveying and central air-conditioning, providing a systematic solution for energy saving and cost reduction.

[0018] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of the energy-saving centrifugal blower provided by an embodiment of the present invention from a first perspective.

[0020] Figure 2 A schematic structural diagram of the energy-saving centrifugal blower from a second perspective provided by an embodiment of the present invention.

[0021] Figure 3 A schematic structural diagram of the energy-saving centrifugal blower provided by an embodiment of the present invention from a third perspective.

[0022] Figure 4 for Figure 3 Schematic diagram of the mechanism after removing the casing.

[0023] Figure 5 for Figure 4 Schematic diagram of the structure of the adjustment component, rotating component, main shaft, impeller assembly and blades.

[0024] Figure 6 for Figure 5 Schematic diagram of the structure of the adjustment component, rotating component, main shaft and blades.

[0025] Figure 7 for Figure 6 Schematic diagram of the structure of the central spindle and adjustment components.

[0026] Figure 8 for Figure 7 Exploded view of the center spindle and adjustment assembly.

[0027] Figure 9 for Figure 4 Schematic diagram of the structure of the control component.

[0028] Figure 10 for Figure 6 Structural side view of the rotating assembly and blades.

[0029] Figure markings: 100- housing, 200- driving mechanism, 210- driving motor, 220- transmission part 1, 300- angle control mechanism, 310- control component, 311- control motor, 312- transmission part 2, 313- bracket, 314- screw, 315- mounting box, 316- guide column, 317- control column, 318- spiral groove, 320- adjustment component, 321- connecting sleeve, 322- connecting rod, 323- adjusting disk, 324- sliding column, 330- rotating component, 331- annular rack, 332- gear, 400- main shaft, 410- circumferential slide groove, 500- impeller assembly, 510- wheel disc, 520- connecting column, 530- matching disk, 600- blade, 610- impeller shaft, 620- pulley. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0032] like Figures 1 to 10 As shown, an energy-saving centrifugal blower provided as an embodiment of the present invention includes a casing 100, an air inlet chamber is provided inside the casing 100, a diffuser and an outlet guide are provided on one side of the casing 100, an impeller assembly 500 is provided in the air inlet chamber, blades 600 are circumferentially distributed in the middle of the impeller assembly 500, and blade shafts 610 are fixed at both ends of the blades 600, one of the impeller shafts 610 is rotatably mounted on the impeller assembly 500 through a bearing, and a pulley 620 is mounted on the other impeller shaft 610, a driving mechanism 200 is provided on the outside of the casing 100, an output end of the driving mechanism 200 is fixedly connected to the main shaft 400, one end of the main shaft 400 extends into the casing 100 and is connected to the impeller assembly 500, and the interior of the main shaft 400 is a hollow structure, further comprising:

[0033] An angle control mechanism 300, which includes a control component 310, an adjustment component 320, and a rotation component 330. The control component 310 is arranged on the outside of the housing 100, and one end of the control component 310 is horizontally slidably connected to the inner wall of the main shaft 400. One end of the control component 310 is slidably connected to the adjustment component 320 through a circumferential groove 410 distributed circumferentially on the main shaft 400. The adjustment component 320 is located inside the impeller assembly 500, and one end of the adjustment component 320 is mounted on the outer wall of the main shaft 400. The other end of the adjustment component 320 is parallel to the impeller assembly 500 and is slidably connected to the pulley 620. One end of the rotation component 330 is fixed to the other end of the adjustment component 320, and the other end of the rotation component 330 is connected to multiple impeller shafts 610.

[0034] Multiple blades 600 are vertically arranged between the impeller assembly 500 and fixed at a certain tilt angle. The drive mechanism 200 drives the impeller assembly 500 to rotate via the main shaft 400. The impeller assembly 500 drives the multiple blades 600 to rotate. The blades 600 use centrifugal force to complete the suction (intake through the air inlet chamber) and discharge (exhaust through the diffuser and outlet guide) of the gas, realizing the basic gas transportation function of the centrifugal blower.

[0035] One end of the control component 310 rotates synchronously with the main shaft 400 during its rotation, and the adjustment component 320 and the rotating component 330 both rotate synchronously with the impeller assembly 500, ensuring the stability of dynamic adjustment. When the gas delivery demand of the centrifugal blower needs to be changed, the other end of the control component 310 can drive its other end to slide in the main shaft 400 by rotating, and the other end of the control component 310 can drive the adjustment component 320 to rotate in a circle on the outer wall of the main shaft 400 by sliding. The adjustment component 320 drives the rotating component 330 to rotate synchronously. The rotating component 330 can drive multiple blade shafts 610 to rotate on the impeller assembly 500 by rotating, and the multiple blade shafts 610 drive their respective blades 600 to rotate synchronously on the impeller assembly 500, thereby realizing continuous adjustment of the inclination angle of the blades 600.

[0036] When the inclination angle of the blade 600 increases, the air inlet side of the blade 600 tilts forward in the direction of rotation of the impeller assembly 500, and approaches the forward blade 600, and the centrifugal force obtained by the gas increases, so that the blower presents the characteristics of "high pressure-small flow"; when the inclination angle of the blade 600 decreases, the air inlet side of the blade 600 tilts backward in the opposite direction of rotation, and approaches the backward blade 600, and the gas flow resistance decreases, so that the blower presents the characteristics of "low pressure-large flow"; so that the centrifugal blower can cover the "low pressure-large flow" (such as ventilation) and "high pressure-large flow" (such as ventilation) on a single device. It can operate under various working conditions such as small flow (such as pneumatic conveying), and can achieve near-efficient operation under different working conditions without replacing equipment or adding a bypass system, avoiding the "big horse pulling a small cart" phenomenon of traditional fixed-blade 600 fans when they deviate from the design point. It has been upgraded from the traditional single working condition to the multi-working condition direction, solving the limitation of "one machine for one use" of traditional fixed-blade 600 fans. It has significant advantages in energy saving, flexibility and reliability, and is especially suitable for scenes that require variable working conditions such as industrial ventilation, pneumatic conveying and central air conditioning, providing a systematic solution for energy saving and cost reduction.

[0037] like Figures 4 to 6 As shown, as a preferred embodiment of the present invention, the impeller assembly 500 includes a wheel disc 510, a connecting column 520 and a matching disk 530. The wheel disc 510 is rotatably mounted in the air intake chamber through a bearing. The wheel disc 510 is fixedly connected to the main shaft 400. One side of the wheel disc 510 is concentrically fixed with the matching disk 530 through the connecting column 520. The blade shaft 610 on one end of the blade 600 is rotatably mounted on the wheel disc 510 through a bearing. One side of the matching disk 530 is rotatably connected to the adjustment assembly 320.

[0038] The blades 600 are distributed between the impeller 510 and the matching disc 530, and the impeller 510 and the matching disc 530 are respectively close to the inner walls on both sides of the air inlet chamber, so that the blades 600 complete the suction (inhalation through the air inlet chamber) and discharge (discharge through the diffuser and outlet guide) of the gas through the action of centrifugal force, thereby realizing the basic gas transportation function of the centrifugal blower.

[0039] In a preferred embodiment, the wheel disc 510 , the mating disc 530 and the main shaft 400 are all concentric.

[0040] like Figures 3 to 9As shown, as a preferred embodiment of the present invention, the control component 310 includes a control motor 311, a second transmission member 312, a bracket 313, a screw 314, a mounting box 315, a guide column 316 and a control column 317. The control motor 311 and the bracket 313 are both fixed to the outside of the housing 100. The output end of the control motor 311 is connected to the screw 314 horizontally rotatably mounted on the bracket 313 through the second transmission member 312. One end of the screw 314 is threadedly connected to the outer wall of the mounting box 315. The mounting box 315 is horizontally slidably mounted on the bracket 313 through the guide column 316. One end of the control column 317 is rotatably mounted in the mounting box 315 through a bearing. The outer wall of the other end of the control column 317 is horizontally slidably connected to the inner wall of the main shaft 400. A spiral groove 318 is distributed on the other end of the control column 317. One end of the adjustment component 320 slides with the spiral groove 318 through the circumferential groove 410 opened on the main shaft 400.

[0041] In the initial state, the control column 317, the adjustment component 320 and the rotating component 330 all rotate synchronously with the main shaft 400 and the impeller component 500 to ensure the stability of dynamic adjustment; when the gas delivery demand of the centrifugal blower needs to be changed, the control motor 311 drives the screw 314 to rotate on the bracket 313 through the transmission part 2 312, and the screw 314 can drive the installation box 315 to move horizontally by rotating and cooperating with the guide column 316, and the installation box 315 drives the control column 317 to slide horizontally inside the main shaft 400, and the control column 317 can drive the adjustment component 320 to rotate in a circle on the outer wall of the main shaft 400 by sliding and cooperating with the spiral groove 318, and the adjustment component 320 drives the rotating component 330 to rotate synchronously, and the rotating component 330 drives The rotation method can drive multiple blade shafts 610 to rotate on the impeller assembly 500, and the multiple blade shafts 610 drive their respective blades 600 to rotate synchronously on the impeller assembly 500, thereby realizing continuous adjustment of the inclination angle of the blades 600; so that the centrifugal blower can cover multiple working conditions such as "low pressure-large flow" (such as ventilation) and "high pressure-small flow" (such as pneumatic conveying) on a single device, and can operate with close to high efficiency under different working conditions without replacing equipment or adding a bypass system, avoiding the "big horse pulling a small cart" phenomenon of traditional fixed blade 600 fans when deviating from the design point, upgrading from the traditional single working condition to the multi-working condition direction, solving the limitation of "one machine for one use" of traditional fixed blade 600 fans, and having significant advantages in energy saving, flexibility and reliability.

[0042] In a preferred embodiment, the second transmission member 312 preferably adopts a transmission structure composed of a synchronous belt and a synchronous wheel;

[0043] Both sides of the installation box 315 are movably equipped with covers, which not only facilitate the installation and maintenance of the control column 317 and the bearing in the installation box 315, but also limit the bearing during the movement of the installation box 315, so that the control shaft and the bearing can stably follow the installation box 315 and move synchronously, ensuring the stability of the connection between them.

[0044] like Figures 4 to 10 As shown, as a preferred embodiment of the present invention, the adjustment assembly 320 includes a connecting sleeve 321, a connecting rod 322, an adjustment disk 323 and a sliding column 324. The connecting sleeve 321 is circumferentially distributed on the outside of the main shaft 400, and two adjacent connecting sleeves 321 are fixedly connected, and a connecting rod 322 is installed between the two adjacent connecting sleeves 321. One end of the connecting rod 322 is connected to the adjustment disk 323, and a sliding column 324 is fixed on the inner side of the connecting sleeve 321. One end of the sliding column 324 passes through the circumferential slide groove 410 and slides with the spiral groove 318. The adjusting disk 323 is rotatably installed on the matching disk 530. The adjusting disk 323 is slidably connected to the pulley 620 fixed on the impeller 610, and the adjusting disk 323 is connected to the rotating assembly 330.

[0045] The control column 317 can drive the sliding column 324 to slide in the circumferential sliding groove 410 by sliding and cooperating with the spiral groove 318. The sliding column 324 can drive the connecting sleeve 321 to rotate circumferentially on the outer wall of the main shaft 400 by cooperating with the circumferential sliding groove 410. The connecting sleeve 321 drives the adjusting disk 323 to rotate circumferentially on the matching disk 530 through the connecting column 520. The adjusting disk 323 can drive multiple blade shafts 610 to rotate on the impeller assembly 500 through the rotating assembly 330. The multiple blade shafts 610 drive their respective blades 600 to rotate synchronously on the impeller assembly 500, thereby realizing continuous adjustment of the inclination angle of the blades 600; so that the centrifugal blower can cover multiple working conditions such as "low pressure-high flow" (such as ventilation) and "high pressure-small flow" (such as pneumatic conveying) on a single device, and can operate with close to high efficiency under different working conditions without replacing equipment or adding a bypass system.

[0046] like Figures 4 to 10 As shown, as a preferred embodiment of the present invention, the rotating assembly 330 includes an annular rack 331 and a gear 332, the annular rack 331 is fixed on the adjusting disk 323, and the outer circumferential surface of the annular rack 331 is circumferentially distributed with a gear 332 meshing with it, the distribution number and distribution position of the gear 332 and the blade 600 are consistent, and the gear 332 is concentrically fixed on the blade shaft 610.

[0047] As the adjusting disk 323 rotates in a circular motion on the mating disk 530, the adjusting disk 323 drives the annular rack 331 to rotate synchronously, the annular rack 331 drives the multiple gears 332 to rotate on their own, and the multiple gears 332 drive the multiple blades 600 to rotate synchronously through the blade shaft 610, thereby achieving continuous adjustment of the inclination angle of the blades 600; this allows the centrifugal blower to cover multiple operating conditions such as "low pressure-high flow" (such as ventilation) and "high pressure-low flow" (such as pneumatic conveying) on a single device, and can operate with near-high efficiency under different operating conditions without the need to replace equipment or add a bypass system.

[0048] In a preferred embodiment, the annular rack 331, the adjustment disk 323, the matching disk 530, the wheel 510 and the main shaft 400 are all concentric, and the adjustment disk 323 and the matching disk 530 preferably adopt an annular block structure, which can ensure the stability and continuity of the air intake volume of the air intake chamber, thereby improving the stability and continuity of the blower.

[0049] like Figures 1 to 4 As shown, as a preferred embodiment of the present invention, the driving mechanism 200 includes a driving motor 210 and a transmission member 220. The driving motor 210 is arranged on the outside of the housing 100, and the output end of the driving motor 210 is connected to the outer wall of one end of the main shaft 400 through the transmission member 220.

[0050] The driving motor 210 drives the main shaft 400 to rotate through the transmission member 220, and the main shaft 400 drives the control column 317 and the impeller assembly 500 to rotate synchronously. The impeller assembly 500 drives the multiple blades 600 to rotate. The control column 317 cooperates with the impeller assembly 500 to drive the adjustment assembly 320 and the rotating assembly 330 to rotate synchronously, thereby ensuring the stability of dynamic adjustment. The blades 600 complete the suction (intake through the air inlet chamber) and discharge (discharge through the diffuser and outlet guide) of the gas through the action of centrifugal force, realizing the basic gas transportation function of the centrifugal blower.

[0051] In a preferred embodiment, the transmission member 220 preferably adopts a transmission structure composed of a synchronous belt and a synchronous wheel.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy-saving centrifugal blower, comprising a casing, an air inlet chamber provided inside the casing, an impeller assembly provided in the air inlet chamber, blades distributed circumferentially in the middle of the impeller assembly, blade shafts fixed at both ends of the blades, one of the impeller shafts being rotatably mounted on the impeller assembly, a pulley being mounted on the other impeller shaft, a drive mechanism provided on the outside of the casing, an output end of the drive mechanism being fixedly connected to a main shaft, one end of the main shaft extending into the casing and connected to the impeller assembly, the interior of the main shaft being a hollow structure, characterized in that: Also includes: An angle control mechanism, the angle control mechanism includes a control component, an adjustment component and a rotation component, the control component is arranged on the outside of the casing, one end of the control component is horizontally slidably connected to the inner wall of the main shaft, and one end of the control component is slidably connected to the adjustment component through a circumferential groove distributed circumferentially on the main shaft, the adjustment component is located inside the impeller assembly, one end of the adjustment component is mounted on the outer wall of the main shaft, the other end of the adjustment component is parallel to the impeller assembly and slidably connected to the pulley, one end of the rotation component is fixed to the other end of the adjustment component, and the other end of the rotation component is connected to multiple impellers.

2. The energy-saving centrifugal blower according to claim 1, characterized in that: The impeller assembly includes a wheel disc, a connecting column and a matching disc. The wheel disc is rotatably installed in the air intake chamber and is fixedly connected to the main shaft. A matching disc is concentrically fixed to one side of the wheel disc through the connecting column. The blade shaft on one end of the blade is rotatably installed on the wheel disc, and one side of the matching disc is rotatably connected to the adjustment assembly.

3. The energy-saving centrifugal blower according to claim 1, characterized in that: The control component includes a control motor, a second transmission member, a bracket, a screw, a mounting box, a guide column and a control column. The control motor and the bracket are fixed to the outside of the casing. The output end of the control motor is connected to the screw mounted on the bracket through the second transmission member, one end of the screw is threadedly connected to the outer wall of the mounting box, and the mounting box is mounted on the bracket for horizontal sliding through the guide column. One end of the control column is rotatably mounted in the mounting box, and the outer wall of the other end of the control column is horizontally slidably connected to the inner wall of the main shaft. Spiral grooves are distributed on the other end of the control column, and one end of the adjustment component slides with the spiral groove through the circumferential groove opened on the main shaft.

4. The energy-saving centrifugal blower according to claim 3, characterized in that: The adjusting assembly includes a connecting sleeve, a connecting rod, an adjusting disk and a sliding column. The connecting sleeve is circumferentially distributed on the outside of the main shaft, two adjacent connecting sleeves are fixedly connected, and a connecting rod is installed between the two adjacent connecting sleeves. One end of the connecting rod is connected to the adjusting disk, and a sliding column is fixed on the inner side of the connecting sleeve. One end of the sliding column passes through the circumferential sliding groove and slides with the spiral groove. The adjusting disk is rotatably installed on the mating disk, the adjusting disk is slidably connected to the pulley fixed on the impeller, and the adjusting disk is connected to the rotating assembly.

5. The energy-saving centrifugal blower according to claim 4, characterized in that: The rotating assembly includes an annular rack and a gear. The annular rack is fixed on the adjusting disk. Gears meshing with the annular rack are distributed circumferentially on the outer side of the annular rack. The distribution number and distribution position of the gears and blades are consistent. The gears are concentrically fixed on the blade shaft.

6. The energy-saving centrifugal blower according to claim 5, characterized in that: The annular rack, the adjusting disk, the matching disk, the wheel disk and the main shaft are all concentric, and the adjusting disk and the matching disk both adopt an annular block structure.

7. The energy-saving centrifugal blower according to claim 1, characterized in that: The driving mechanism includes a driving motor and a transmission member 1. The driving motor is arranged on the outside of the casing, and the output end of the driving motor is connected to the outer wall of one end of the main shaft through the transmission member 1.

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