CN216241382U

CN216241382U - Axial-flow fan with adjustable moving blades

Info

Publication number: CN216241382U
Application number: CN202121473721.6U
Authority: CN
Inventors: 许建国; 严亮
Original assignee: Huaneng Ningxia Energy Co ltd
Current assignee: Huaneng Ningxia Energy Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-04-08
Anticipated expiration: 2031-06-30

Abstract

An axial flow fan with an adjustable moving blade comprises a driving motor shaft, wherein a wheel disc is fixedly connected to the outer wall of the driving motor shaft, a first blade is fixedly connected to the outer wall of the wheel disc, a partition plate is fixedly installed in a cavity of the first blade, an oil storage bin is arranged below the partition plate, a damping plate is fixedly installed on the inner wall of one end, fixed to the wheel disc, of the first blade, a first spring is fixedly connected to the side wall of the damping plate, a limiting block is fixedly connected to one end, away from the damping plate, of the first spring, one end of the limiting block is fixedly connected with a second blade, a connecting hole is formed in the partition plate, a second spring is fixedly connected to the first blade, a movable sliding plug is fixedly connected to one end of the second spring, a rubber ring is fixedly arranged at the upper end of the movable sliding plug, a filter screen is fixedly installed in the movable sliding plug, the first blade is rotatably connected with an oil tank cover on the outer wall of the oil storage bin.

Description

Axial-flow fan with adjustable moving blades

Technical Field

The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan with adjustable moving blades.

Background

The axial flow fan has a wide application range, can be used for ventilation or enhanced heat dissipation in places such as metallurgy, chemical engineering, light industry, food and the like at present, can be used as a free fan if a casing is removed, and can also be installed in a longer exhaust pipeline at intervals in series to improve the wind pressure in the pipeline, so the axial flow fan is called as an axial flow type because gas flows parallel to a fan shaft, the axial flow fan is usually used in the places with higher flow requirement and lower pressure requirement, the axial flow fan is fixed at a position and moves air, and the key technology of the axial flow fan with adjustable movable blades is how to flexibly and reliably adjust the blades of the fan, and because the blades of the fan in running can generate closing torque, the blades must be balanced by balance blocks at the root parts of the blades, otherwise, the blades cannot be adjusted.

At present, various manufacturers on the market determine the shape and the weight of a balance block through accurate calculation, and then finish-machine the balance block through die forging or precision casting, but small differences generally exist, and the differences influence the balance of the balance block on closing torque, so that the precision degree of each machining process is required to be extremely high, the machining difficulty is large, the cost is high, but the precision degree cannot be guaranteed, the closing torque is difficult to be completely balanced, the movable blade adjustable axial flow fan is very unfavorable for safe and reliable operation and flexible adjustment of blade angles, in addition, the lubricating oil consumption and oil change period of a bearing structure adopted by a blade shaft are short, and therefore, the movable blade adjustable axial flow fan is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an axial flow fan with adjustable moving blades.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an axial flow fan with an adjustable moving blade comprises a driving motor shaft, wherein a wheel disc is fixedly connected to the outer wall of the driving motor shaft, a first blade is fixedly connected to the outer wall of the wheel disc, a cavity is formed in the first blade, a partition plate is fixedly installed in the cavity of the first blade, an oil storage bin is arranged below the partition plate, a damping plate is fixedly installed on the inner wall of one end, fixed to the wheel disc, of the first blade, a first spring is fixedly connected to the side wall of the damping plate, a limiting block is fixedly connected to the other end, away from the damping plate, of the first spring, a second blade is fixedly connected to one end of the limiting block, a connecting hole is formed in the partition plate, a second spring is fixedly connected to the first blade, a movable sliding plug is fixedly connected to one end, away from the inner wall of the first blade, a rubber ring is fixedly arranged at the upper end of the movable sliding plug, the inside fixed mounting of activity sliding plug has the filter screen, first blade rotates at the outer wall of oil storage position and is connected with the oil tank lid.

Preferably, the first blades are uniformly distributed and fixedly connected to the wheel disc, and the second blades are respectively accommodated in the cavities of the first blades.

Preferably, the second blade is fixedly connected with the limiting block on the rear wall, and the limiting block enables the second blade to be always in sliding clamping connection with the inner wall of the first blade.

Preferably, the first spring is in a contracted state when the driving motor shaft does not rotate, and the second blade is stretched by the first spring under the action of centrifugal force when the driving motor shaft rotates, and slides out of the first blade cavity.

Preferably, a cavity is arranged in the movable sliding plug, and the filter screen is fixedly arranged in the cavity of the movable sliding plug.

Preferably, a connecting hole is formed in the partition plate, the movable sliding plug is connected with the partition plate in a sliding mode through the connecting hole, a groove is formed in the position of the connecting hole in the partition plate, the rubber ring is consistent with the groove in size, and the rubber ring can be contained in the groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. open the fan through opening, the first blade that drive motor shaft rotates on the drive rim plate rotates together, centrifugal force is big when first blade rotates at a high speed, the second blade is under centrifugal force, the second blade roll-off in the first blade of first spring extension messenger, the big length of second blade roll-off is longer when centrifugal force, the machining precision requirement has been reduced, make the regulation of blade simpler, make the moving vane fan can adapt to different wind pressures, the flow is big, the equipment quantity has been reduced and the area investment has been saved, reduce operation maintenance work load and station service power.

2. When the driving motor shaft lacks lubricating oil, the driving motor shaft can rotate and be unsmooth, the second blade is under the drive that does not have centrifugal force, the second blade slides and moves and contracts in the first blade, the wheel lubrication oil in the oil storage bin in the first blade flows through the activity sliding plug, smear lubricating oil for the driving motor shaft through the oil seepage hole of first blade bottom, the bearing structure lubricating oil that has avoided the driving motor shaft to adopt is easy to damage and consumes the oil change short-term, the problem that the driving motor shaft can rotate and unsmooth rotational speed reduces is solved, the service life of equipment is prolonged, it needs to explain, the wheel lubrication oil in the oil storage bin is consumed up, can open the oil tank lid and add lubricating oil for the oil storage bin.

Drawings

Fig. 1 is a schematic structural diagram of an axial flow fan with adjustable moving blades according to the present invention;

FIG. 2 is a schematic structural diagram of a blade of an axial flow fan with an adjustable moving blade according to the present invention;

fig. 3 is an enlarged view of a in fig. 2.

In the figure: 1 driving motor axle, 2 rim plates, 3 first blades, 4 second blades, 5 stopper, 6 first spring, 7 damper plate, 8 baffles, 9 oil storage storehouses, 10 second springs, 11 activity sliding plugs, 12 rubber rings, 13 filter screens, 14 fuel tank caps.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, an axial flow fan with adjustable moving blades comprises a driving motor shaft 1, a wheel disc 2 fixedly connected to the outer wall of the driving motor shaft 1, a first blade 3 fixedly connected to the outer wall of the wheel disc 2, a cavity formed in the first blade 3, a partition plate 8 fixedly installed in the cavity of the first blade 3, an oil storage bin 9 disposed below the partition plate 8, a damping plate 7 fixedly installed on the inner wall of one end of the first blade 3 fixed to the wheel disc 2, a first spring 6 fixedly connected to the side wall of the damping plate 7, a limiting block 5 fixedly connected to the other end of the first spring 6 far from the damping plate 7, a second blade 4 fixedly connected to one end of the limiting block 5, the first spring 6 being in a contracted state when the driving motor shaft 1 is not rotating, the second blade 4 being stretched by the first spring 6 under the action of centrifugal force when the driving motor shaft 1 is rotating, the second blade 4 sliding out of the cavity of the first blade 3, a limiting block 5 fixedly connected with the rear wall of the second blade 4, wherein the limiting block 5 ensures that the second blade 4 is always slidably clamped on the inner wall of the first blade 3, twelve first blades 3 and twelve second blades 4 are provided, the first blades 3 are uniformly and fixedly connected on the wheel disc 2, the second blades 4 are respectively accommodated in the cavity of the first blades 3, a connecting hole is arranged on the partition plate 8, a second spring 10 is fixedly connected on the first blades 3, one end of the second spring 10 far away from the inner wall of the first blades 3 is fixedly connected with a movable sliding plug 11, the upper end of the movable sliding plug 11 is fixedly provided with a rubber ring 12 in front of the rubber ring, a connecting hole is arranged on the partition plate 8, the movable sliding plug 11 is slidably connected with the partition plate 8 through the connecting hole, the partition plate 8 is provided with a groove at the position of the connecting hole, the rubber ring 12 is consistent with the size of the groove, the rubber ring 12 can be accommodated in the groove, a filter screen 13 is fixedly installed inside the movable sliding plug 11, the filter screen 13 has 3, is equipped with the cavity in the activity sliding plug 11, and three filter screen 13 is all fixed mounting in the cavity of activity sliding plug 11, and first blade 3 rotates at the outer wall of oil storage bin 9 position and is connected with fuel tank cap 14.

The functional principle of the utility model can be illustrated by the following operation modes:

according to the utility model, firstly, the movable blade adjustable axial flow fan is installed at a place needing to be used, the fan is opened, the driving motor shaft 1 rotates to drive the first blade 3 on the wheel disc 2 to rotate together, when the centrifugal force is larger when the first blade 3 rotates at a high speed, the second blade 4 slides out under the action of the centrifugal force, the first spring 6 stretches to enable the second blade 4 in the first blade 3 to slide out, when the centrifugal force is larger, the sliding-out length of the second blade 4 is longer, the machining precision requirement is reduced, the adjustment of the blades is simpler, when the fan is closed, the rotating speed of the driving motor shaft 1 is slowly reduced, the first spring 6 in the first blade 3 is contracted, and the second blade 4 connected with the first blade is enabled to slide back to the inside of the first blade 3.

When driving motor shaft 2 lacks lubricating oil, driving motor shaft 2 can rotate and be puckery, second blade 4 is under the drive that does not have centrifugal force, second blade 4 slides and moves and contracts in first blade 3, the wheel lubrication oil of oil storage bin 9 in the first blade 3 flows out through activity sliding plug 11, smear lubricating oil for driving motor shaft 2 through the oil leakage hole of first blade 3 bottom, the bearing structure lubricating oil that has avoided driving motor shaft 2 to adopt is easy to damage and consumes to change oil short-term, the problem that driving motor shaft 2 can rotate and be puckery rotational speed and reduce has been solved, the live time of equipment has been improved, lubricating oil in oil storage bin 9 has been consumed, can open oil tank cap 14 and add lubricating oil for oil storage bin 9.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The movable blade adjustable axial flow fan comprises a driving motor shaft (1) and is characterized in that a wheel disc (2) is fixedly connected to the outer wall of the driving motor shaft (1), a first blade (3) is fixedly connected to the outer wall of the wheel disc (2), a cavity is formed in the first blade (3), a partition plate (8) is fixedly installed in the cavity of the first blade (3), an oil storage bin (9) is arranged below the partition plate (8), a damping plate (7) is fixedly installed on the inner wall of one end, fixed with the wheel disc (2), of the first blade (3), a first spring (6) is fixedly connected to the side wall of the damping plate (7), a limiting block (5) is fixedly connected to the other end, far away from the damping plate (7), of the first spring (6), a second blade (4) is fixedly connected to one end of the limiting block (5), and a connecting hole is formed in the partition plate (8), fixedly connected with second spring (10) on first blade (3), second spring (10) is in one end fixedly connected with activity sliding plug (11) of keeping away from first blade (3) inner wall, the upper end of activity sliding plug (11) is fixed to have rubber circle (12) on the road, the inside fixed mounting of activity sliding plug (11) has filter screen (13), first blade (3) is connected with fuel tank cap (14) in the outer wall rotation of oil storage bin (9) position.

2. The axial flow fan with adjustable moving blades according to claim 1, characterized in that the first blades (3) are uniformly and fixedly connected to the wheel disc (2), and the second blades (4) are respectively received in the cavities of the first blades (3).

3. The axial flow fan with adjustable moving blades according to claim 1 is characterized in that the back wall of the second blade (4) is fixedly connected with a limiting block (5), and the limiting block (5) enables the second blade (4) to be always in sliding clamping connection with the inner wall of the first blade (3).

4. The axial flow fan with adjustable moving blades as claimed in claim 1, characterized in that the first spring (6) is in a contracted state when the driving motor shaft (1) is not rotating, the second blade (4) is stretched by the first spring (6) under the action of centrifugal force when the driving motor shaft (1) is rotating, and the second blade (4) slides out of the cavity of the first blade (3).

5. The axial flow fan with adjustable moving blades according to claim 1, characterized in that a cavity is arranged in the movable sliding plug (11), and the filter screens (13) are fixedly arranged in the cavity of the movable sliding plug (11).

6. The axial flow fan with the adjustable moving blades according to claim 1, wherein a connecting hole is formed in the partition plate (8), the movable sliding plug (11) is slidably connected with the partition plate (8) through the connecting hole, a groove is formed in the position of the connecting hole of the partition plate (8), the rubber ring (12) and the groove are consistent in size, and the rubber ring (12) can be accommodated in the groove.