CN215521366U - Impeller for centrifugal ventilator - Google Patents
Impeller for centrifugal ventilator Download PDFInfo
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- CN215521366U CN215521366U CN202121086873.0U CN202121086873U CN215521366U CN 215521366 U CN215521366 U CN 215521366U CN 202121086873 U CN202121086873 U CN 202121086873U CN 215521366 U CN215521366 U CN 215521366U
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Abstract
The utility model belongs to the technical field of fan impellers, and particularly relates to an impeller for a centrifugal fan; the inner blade is arranged between the shaft sleeve and the inner ring plate, the outer blade is arranged between the inner ring plate and the outer shell, the adjusting part is arranged between the outer blades and comprises an outer adjusting blade and an inner adjusting blade, the outer adjusting blade is connected with an outer pull rod, the inner adjusting blade is connected with an inner pull rod, the outer pull rod is connected with an inner slide rod in a sliding manner, and the inner slide rod is fixedly connected with the inner pull rod; the inner ring plate is provided with a connecting seat, the connecting seat is connected with a connecting sleeve through a connecting rod, and the connecting sleeve is rotationally connected with the inner pull rod; the outer shell is provided with a guide groove, positioning holes are formed in two sides of the guide groove, the outer pull rod penetrates through the guide groove and is connected with an adjusting block, and the adjusting block is connected with a positioning rod and is provided with an adjusting button; the utility model has reasonable structure and convenient operation and use, and can adjust the area and the angle of the blade so as to adjust the air quantity and the air pressure of the fan.
Description
Technical Field
The utility model belongs to the technical field of fan impellers, and particularly relates to an impeller for a centrifugal fan.
Background
The ventilator is a machine which can increase the gas pressure and discharge the gas by means of the input mechanical energy, and is a driven fluid machine, and the modern ventilator is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial kilns, cooling and ventilation in air conditioning equipment and household electrical equipment, drying and sorting of grains, inflation and propulsion of wind tunnel wind sources and cushion ships and the like; the centrifugal ventilator is a new type of impeller for centrifugal ventilator, which is developed in modern society, the impeller is driven by a power machine to rotate in a volute casing, air is sucked from the center of the impeller through an air suction port, the pressure and the speed of the air are improved due to the power action of the blades on the air, the air is thrown to the casing along a blade channel under the action of centrifugal force and is discharged from an air outlet, and the air flows in the impeller mainly in a radial plane, so the impeller is also called a radial flow ventilator.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides the impeller for the centrifugal fan, which has a reasonable structure and is convenient to operate and use, and the area and the angle of the blade can be adjusted, so that the air quantity and the air pressure of the fan can be adjusted to adapt to different working conditions.
The purpose of the utility model is realized as follows: an impeller for a centrifugal ventilator comprises a shaft sleeve, an inner ring plate and an outer shell, wherein inner blades are arranged between the shaft sleeve and the inner ring plate, outer blades are arranged between the inner ring plate and the outer shell, an adjusting part is arranged between two adjacent outer blades, the adjusting part comprises an outer adjusting blade and an inner adjusting blade, the side surface of the outer adjusting blade is connected with an outer pull rod through a second short rod, the side surface of the inner adjusting blade is connected with an inner pull rod through a first short rod, the right end of the outer pull rod is connected with an inner slide rod in a sliding manner, and the inner slide rod is fixedly connected with the left end of the inner pull rod; the inner ring plate is provided with a connecting seat, the connecting seat is rotatably connected with a connecting sleeve through a connecting rod, and the connecting sleeve is rotatably connected with the right end of the inner pull rod; the outer pull rod is characterized in that a guide groove is formed in the outer side face of the outer shell, positioning holes are formed in two sides of the guide groove, the left end of the outer pull rod penetrates through the guide groove and is connected with an adjusting block in a sliding mode, positioning rods are connected to two sides of the adjusting block, the positioning blocks are inserted into the positioning holes, and adjusting buttons are arranged on the adjusting block.
And a rolling bearing is arranged in the shaft sleeve.
The outer blade and the inner blade are both airfoil-shaped blades, and the blade tops of the outer blade and the inner blade are inclined towards the rotation direction of the impeller.
The cross section of shell body is the U type.
The outer blades are connected with the inner ring plate and the outer shell through welding, and the inner blades are connected with the shaft sleeve and the inner ring plate through welding.
The utility model has the beneficial effects that: the impeller for the centrifugal ventilator is characterized in that an inner blade is arranged between a shaft sleeve and an inner ring plate, an outer blade is arranged between the inner ring plate and an outer shell, the inner blade and the outer blade are both fixed blades and can provide stable air volume and air pressure, an adjusting part is arranged between two adjacent outer blades and comprises an outer adjusting blade and an inner adjusting blade, and the total area of the blades formed by the outer adjusting blade and the inner adjusting blade can be adjusted by adjusting the length of the outer adjusting blade extending outwards, so that the air volume and the air pressure generated by the fan during working can be adjusted to adapt to different working conditions; the inner pull rod is rotatably connected with the inner ring plate through a connecting sleeve, a connecting rod and a connecting seat, the inner pull rod is rotatably connected with the adjusting block, the adjusting knob is unscrewed to remove the adjusting block, the outer adjusting blade and the inner adjusting blade can be rotated to adjust the angle of the whole adjusting blade and the whole radial surface of the impeller, the position of the outer pull rod in the guide groove can be adjusted at the same time, the spatial position of the whole adjusting blade between the outer shell and the inner ring plate can be adjusted, the adjustment of the inclination angle and the length of the adjusting blade is realized, the adjusting block is finally installed and fixed through the matching of a positioning rod and a positioning hole on the adjusting block, the operation is simple and convenient, the adjustment of the area of the adjusting blade and the angles in two directions can be realized, and the air volume and the air pressure of the fan can be quickly adjusted; the impeller for the centrifugal ventilator is reasonable in structure and convenient to operate and use, and the area and the angle of the blades can be adjusted, so that the air volume and the air pressure of the fan can be adjusted.
Drawings
Fig. 1 is a front view schematically showing the structure of an impeller for a centrifugal fan according to the present invention.
Fig. 2 is a schematic view of an internal structure of an impeller for a centrifugal fan according to the present invention.
Fig. 3 is a partial structural schematic view of an impeller for a centrifugal fan according to the present invention.
Fig. 4 is a schematic structural view of the connection between the outer adjustment vane and the inner adjustment vane of the impeller for the centrifugal fan according to the present invention.
Fig. 5 is a schematic structural view of connection of an impeller regulating block for a centrifugal fan according to the present invention.
In the figure: 1. the device comprises a shaft sleeve 2, an outer shell 3, an adjusting part 4, an inner ring plate 5, an inner blade 6, an outer blade 7, an inner pull rod 8, an outer pull rod 9, an adjusting block 10, a positioning rod 11, an adjusting button 12, an outer adjusting blade 13, an inner adjusting blade 14, a connecting seat 15, a connecting rod 16, a connecting sleeve 17, a first short rod 18, an inner sliding rod 19, a second short rod 20, a positioning hole 21 and a guide groove.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-5, an impeller for a centrifugal fan includes a shaft sleeve 1, an inner ring plate 4 and an outer casing 2, wherein an inner blade 5 is arranged between the shaft sleeve 1 and the inner ring plate 4, an outer blade 6 is arranged between the inner ring plate 4 and the outer casing 2, an adjusting part 3 is arranged between two adjacent outer blades 6, the adjusting part 3 includes an outer adjusting blade 12 and an inner adjusting blade 13, the side surface of the outer adjusting blade 12 is connected with an outer pull rod 8 through a second short rod 19, the side surface of the inner adjusting blade 13 is connected with an inner pull rod 7 through a first short rod 17, the right end of the outer pull rod 8 is slidably connected with an inner slide rod 18, and the inner slide rod 18 is fixedly connected with the left end of the inner pull rod 7; a connecting seat 14 is arranged on the inner ring plate 4, the connecting seat 14 is rotatably connected with a connecting sleeve 16 through a connecting rod 15, and the connecting sleeve 16 is rotatably connected with the right end of the inner pull rod 7; be provided with guide way 21 on the lateral surface of shell body 2, the both sides of guide way 21 are provided with locating hole 20, the left end of outer pull rod 8 passes guide way 21 and sliding connection have regulating block 9, the both sides of regulating block 9 are connected with locating lever 10, locating piece 10 inserts in locating hole 20, be provided with adjusting button 11 on the regulating block 9.
The impeller for the centrifugal ventilator is characterized in that an inner blade 5 is arranged between a shaft sleeve 1 and an inner ring plate 4, an outer blade 6 is arranged between the inner ring plate 4 and an outer shell 2, the inner blade 5 and the outer blade 6 are both fixed blades and can provide stable air volume and air pressure, an adjusting part 3 is arranged between two adjacent outer blades 6, the adjusting part 3 comprises an outer adjusting blade 12 and an inner adjusting blade 13, the total area of the blades formed by the outer adjusting blade 12 and the inner adjusting blade 13 can be adjusted by adjusting the outward extending length of the outer adjusting blade 12, and therefore the air volume and the air pressure generated by the fan during working can be adjusted to adapt to different working conditions; the inner pull rod 7 is rotatably connected with the inner ring plate 4 through a connecting sleeve 16, a connecting rod 15 and a connecting seat 14, the inner pull rod 7 is rotatably connected with the adjusting block 9, the adjusting button 11 is unscrewed to remove the adjusting block 9, the outer adjusting blade 12 and the inner adjusting blade 13 can be rotated, the angle of the whole adjusting blade and the whole radial surface of the impeller is adjusted, the position of the outer pull rod 8 in the guide groove 21 can be adjusted, the spatial position of the whole adjusting blade between the outer shell 2 and the inner ring plate 4 is adjusted, the inclination angle and the length of the adjusting blade are adjusted, the adjusting block 9 is finally installed and fixed through the matching of the positioning rod 10 on the adjusting block and the positioning hole 20, the operation is simple and convenient, the adjustment of the area and the angles in two directions of the adjusting blade can be realized, and the air volume and the air pressure of the fan can be quickly adjusted; the impeller for the centrifugal ventilator is reasonable in structure and convenient to operate and use, and the area and the angle of the blades can be adjusted, so that the air volume and the air pressure of the fan can be adjusted.
Example 2
As shown in fig. 1-5, an impeller for a centrifugal fan includes a shaft sleeve 1, an inner ring plate 4 and an outer casing 2, wherein an inner blade 5 is arranged between the shaft sleeve 1 and the inner ring plate 4, an outer blade 6 is arranged between the inner ring plate 4 and the outer casing 2, an adjusting part 3 is arranged between two adjacent outer blades 6, the adjusting part 3 includes an outer adjusting blade 12 and an inner adjusting blade 13, the side surface of the outer adjusting blade 12 is connected with an outer pull rod 8 through a second short rod 19, the side surface of the inner adjusting blade 13 is connected with an inner pull rod 7 through a first short rod 17, the right end of the outer pull rod 8 is slidably connected with an inner slide rod 18, and the inner slide rod 18 is fixedly connected with the left end of the inner pull rod 7; a connecting seat 14 is arranged on the inner ring plate 4, the connecting seat 14 is rotatably connected with a connecting sleeve 16 through a connecting rod 15, and the connecting sleeve 16 is rotatably connected with the right end of the inner pull rod 7; be provided with guide way 21 on the lateral surface of shell body 2, the both sides of guide way 21 are provided with locating hole 20, the left end of outer pull rod 8 passes guide way 21 and sliding connection have regulating block 9, the both sides of regulating block 9 are connected with locating lever 10, locating piece 10 inserts in locating hole 20, be provided with adjusting button 11 on the regulating block 9.
For better effect, the shaft sleeve 1 is internally provided with a rolling bearing so as to be connected with a driving shaft of the motor and reduce friction.
For better effect, the outer blade 6 and the inner blade 5 are airfoil type blades, the blade tops of the outer blade 6 and the inner blade 5 are inclined to the rotation direction of the impeller, the generated pressure is maximum, and the required diameter of the impeller is minimum when the flow rate and the rotation number are constant.
For better effect, the cross section of the outer casing 2 is U-shaped to increase the strength of the whole impeller and reduce the gas leakage between the blades and the casing.
For better effect, the outer blades 6 are connected with the inner ring plate 4 and the outer shell 2 by welding, and the inner blades 5 are connected with the shaft sleeve 1 and the inner ring plate 4 by welding, so that the impeller is lighter in weight, the flow channel is smooth, and the pressure loss is reduced.
The impeller for the centrifugal ventilator is characterized in that an inner blade 5 is arranged between a shaft sleeve 1 and an inner ring plate 4, an outer blade 6 is arranged between the inner ring plate 4 and an outer shell 2, the inner blade 5 and the outer blade 6 are both fixed blades and can provide stable air volume and air pressure, an adjusting part 3 is arranged between two adjacent outer blades 6, the adjusting part 3 comprises an outer adjusting blade 12 and an inner adjusting blade 13, the total area of the blades formed by the outer adjusting blade 12 and the inner adjusting blade 13 can be adjusted by adjusting the outward extending length of the outer adjusting blade 12, and therefore the air volume and the air pressure generated by the fan during working can be adjusted to adapt to different working conditions; the inner pull rod 7 is rotatably connected with the inner ring plate 4 through a connecting sleeve 16, a connecting rod 15 and a connecting seat 14, the inner pull rod 7 is rotatably connected with the adjusting block 9, the adjusting button 11 is unscrewed to remove the adjusting block 9, the outer adjusting blade 12 and the inner adjusting blade 13 can be rotated, the angle of the whole adjusting blade and the whole radial surface of the impeller is adjusted, the position of the outer pull rod 8 in the guide groove 21 can be adjusted, the spatial position of the whole adjusting blade between the outer shell 2 and the inner ring plate 4 is adjusted, the inclination angle and the length of the adjusting blade are adjusted, the adjusting block 9 is finally installed and fixed through the matching of the positioning rod 10 on the adjusting block and the positioning hole 20, the operation is simple and convenient, the adjustment of the area and the angles in two directions of the adjusting blade can be realized, and the air volume and the air pressure of the fan can be quickly adjusted; the impeller for the centrifugal ventilator is reasonable in structure and convenient to operate and use, and the area and the angle of the blades can be adjusted, so that the air volume and the air pressure of the fan can be adjusted.
Claims (5)
1. The utility model provides an impeller for centrifugal fan, it includes axle sleeve (1), interior crown plate (4) and shell body (2), its characterized in that: an inner blade (5) is arranged between the shaft sleeve (1) and the inner ring plate (4), an outer blade (6) is arranged between the inner ring plate (4) and the outer shell (2), an adjusting part (3) is arranged between two adjacent outer blades (6), the adjusting part (3) comprises an outer adjusting blade (12) and an inner adjusting blade (13), the side surface of the outer adjusting blade (12) is connected with an outer pull rod (8) through a second short rod (19), the side surface of the inner adjusting blade (13) is connected with an inner pull rod (7) through a first short rod (17), the right end of the outer pull rod (8) is connected with an inner sliding rod (18) in a sliding manner, and the inner sliding rod (18) is fixedly connected with the left end of the inner pull rod (7); the inner ring plate (4) is provided with a connecting seat (14), the connecting seat (14) is rotatably connected with a connecting sleeve (16) through a connecting rod (15), and the connecting sleeve (16) is rotatably connected with the right end of the inner pull rod (7); be provided with guide way (21) on the lateral surface of shell body (2), the both sides of guide way (21) are provided with locating hole (20), the left end of outer pull rod (8) passes guide way (21) and sliding connection have regulating block (9), the both sides of regulating block (9) are connected with locating lever (10), locating lever (10) insert in locating hole (20), be provided with adjusting knob (11) on regulating block (9).
2. The impeller for a centrifugal fan according to claim 1, wherein: and a rolling bearing is arranged in the shaft sleeve (1).
3. The impeller for a centrifugal fan according to claim 1, wherein: the outer blade (6) and the inner blade (5) are both airfoil-shaped blades, and the blade tops of the outer blade (6) and the inner blade (5) are inclined towards the rotation direction of the impeller.
4. The impeller for a centrifugal fan according to claim 1, wherein: the cross section of the outer shell (2) is U-shaped.
5. The impeller for a centrifugal fan according to claim 1, wherein: the outer blades (6) are connected with the inner ring plate (4) and the outer shell (2) through welding, and the inner blades (5) are connected with the shaft sleeve (1) and the inner ring plate (4) through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086873.0U CN215521366U (en) | 2021-05-20 | 2021-05-20 | Impeller for centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086873.0U CN215521366U (en) | 2021-05-20 | 2021-05-20 | Impeller for centrifugal ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215521366U true CN215521366U (en) | 2022-01-14 |
Family
ID=79804756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121086873.0U Active CN215521366U (en) | 2021-05-20 | 2021-05-20 | Impeller for centrifugal ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215521366U (en) |
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2021
- 2021-05-20 CN CN202121086873.0U patent/CN215521366U/en active Active
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