CN220319859U - Industrial cooling variable frequency fan - Google Patents

Abstract

The utility model belongs to the technical field of fans, and particularly relates to an industrial cooling variable frequency fan which comprises a base plate, wherein a spline shaft is arranged on a rotary positioning structure on the upper surface of the base plate, the rotary positioning structure comprises a base fixedly connected to the base plate and a driven wheel rotatably connected to the base, and a positioning sleeve is fixedly connected to the center of the inner side of the driven wheel. According to the utility model, the shaft of the fan is designed to be the spline shaft which is slidably connected to the inner side of the driven wheel, when the variable frequency motor works, the spline shaft can normally rotate to cool a workshop, meanwhile, the height of the spline shaft can be adjusted by a cylinder mode, the height of the fan blades can be adjusted, the fan blades can be adjusted and used according to requirements, when the variable frequency motor is not used, the fan blades can be hidden in the protective cover, the influence of dust and the like is reduced, and the problems that the temperature-reducing effect cannot be adjusted and the protective effect is poor in the prior art due to incapability of adjusting the height of the fan blades are solved.

Description

Industrial cooling variable frequency fan

Technical Field

The utility model relates to the technical field of fans, in particular to an industrial cooling variable frequency fan.

Background

The industrial cooling fan can effectively push a large amount of air to move, and generate super-large air volume, so that a space is formed to move and circulate an air flow field, the problem of air circulation of an industrial production workshop can be effectively regulated and controlled, meanwhile, the workshop is cooled, more frequency conversion fans with good performance are applied in summer, the frequency conversion fans are important for the use of the workshop, the fans are divided into hanging type frequency conversion fans and vertical type frequency conversion fans, workshop space can be saved, the frequency conversion fans are widely used, the hanging type fans at the present stage are generally directly installed at the top of the workshop and cannot be lifted up and down, the cooling effect of the fans cannot be regulated, the use is influenced, and secondly, the upper position and the lower position of the fans cannot be regulated, so that the fans cannot be protected when not in use, the fan blades cannot be hidden and are easily influenced by dust and the like.

Disclosure of Invention

According to the industrial cooling variable frequency fan, the shaft of the fan is designed to be the spline shaft which is slidably connected to the inner side of the driven wheel, when the variable frequency motor works, normal rotation of the spline shaft can be achieved, cooling of a workshop is achieved through the fan blades, meanwhile, the height of the spline shaft can be adjusted through an air cylinder, the height of the fan blades can be adjusted according to requirements, the fan blades can be hidden in the protective cover when the fan is not used, influences of dust and the like are reduced, and the problems that the cooling effect cannot be adjusted and the protection effect is poor in the prior art are solved.

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides an industry cooling variable frequency fan, includes the base plate, be provided with the integral key shaft on the rotary positioning structure of base plate upper surface, rotary positioning structure includes the base of fixed connection on the base plate to and rotate the follower of connecting on the base, the inboard center department fixedly connected with positioning sleeve of follower, integral key shaft sliding connection is in positioning sleeve's inboard, fixedly connected with is a plurality of fan blades that the annular array distributes on the carousel of integral key shaft lower extreme, and the upper end of integral key shaft is provided with the lifter plate, installs two cylinders of symmetric distribution between lifter plate's both sides and the base plate;

the device further comprises a variable frequency motor arranged on the lower surface of the base plate, the top of an output shaft of the variable frequency motor extends to the upper side of the base plate and is fixedly provided with a driving wheel, and a synchronous belt is arranged between the driving wheel and a driven wheel.

Further, a plurality of spacing protrusions are integrally formed on the inner side of the positioning sleeve, and spacing grooves matched with the spacing protrusions are formed at positions of the spline shafts corresponding to the spacing protrusions.

Further, the lower surface of the base plate is fixedly connected with a protective cover above the fan blades.

Further, a clearance fit bearing is arranged at the joint between the end part of the spline shaft and the lifting plate.

Further, two limit holes which are symmetrically distributed are formed in the lifting plate, limit rods are inserted into the limit holes of the lifting plate, the lower ends of the limit rods are fixedly connected to the base plate, and a protective sleeve is fixedly connected to the upper surface of the lifting plate, located outside the limit rods.

Compared with the prior art, the utility model provides an industrial cooling variable frequency fan, which has the following beneficial effects:

according to the variable frequency fan, the driving shaft of the variable frequency fan is designed to be the spline shaft, the spline shaft is slidably connected in the positioning sleeve of the driven wheel, the limiting groove on the spline shaft is matched with the limiting protrusion of the positioning sleeve, when the variable frequency motor works, the driven wheel can be driven to rotate, then the spline shaft is driven to rotate, normal rotation of the fan blades is achieved, the height of the fan blades can be adjusted when the fan works, the cooling effect of the fan is adjusted, the pneumatic cylinder is driven to work during adjustment, the height of the lifting plate is adjusted, and then the adjustment of the height position of the spline shaft is achieved, so that the adjustment of the height position of the fan blades is achieved, the normal work of the fan blades cannot be affected during adjustment, and the use performance is good.

According to the utility model, the protective cover is fixedly connected to the lower surface of the substrate, the protective cover is positioned above the fan blades, the heights of the fan blades can be adjusted, and when the variable-frequency fan is not used, the heights of the fan blades can be increased, so that the fan blades are hidden in the protective cover, the hidden protection of the fan blades is realized, the influence of dust and the like is reduced, and the use effect is good.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic structural view of a rotary positioning structure according to the present utility model.

In the figure: 1. a substrate; 2. a variable frequency motor; 3. a limit groove; 4. a fan blade; 5. a protective cover; 6. a cylinder; 7. a rotary positioning structure; 701. a base; 702. a driven wheel; 703. positioning a sleeve; 704. a limit protrusion; 8. a lifting plate; 9. a spline shaft; 10. a bearing; 11. a limit rod; 12. a protective sleeve; 13. a synchronous belt; 14. a driving wheel.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1 and fig. 2, an industrial cooling variable frequency fan according to an embodiment of the present utility model includes a base plate 1, a spline shaft 9 is disposed on a rotary positioning structure 7 on an upper surface of the base plate 1, by designing a driving shaft of the fan as the spline shaft 9, the spline shaft 9 can rotate in a lifting process, adjustment of a blade height position is achieved, the rotary positioning structure 7 includes a base 701 fixedly connected to the base plate 1, and a driven wheel 702 rotatably connected to the base 701, a positioning sleeve 703 is fixedly connected to an inner side center of the driven wheel 702, the spline shaft 9 is slidably connected to an inner side of the positioning sleeve 703, sliding connection of the spline shaft 9 on the positioning sleeve 703 is achieved, lifting can be achieved, a plurality of fan blades 4 distributed in an annular array are fixedly connected to a turntable at a lower end of the spline shaft 9, the fan blades 4 can rotate when the spline shaft 9 rotates, rotation driving of the fan blades 4 is achieved, a lifting plate 8 is disposed at an upper end of the spline shaft 9, when the lifting plate 8 rises or falls, the lifting plate 8 can be driven to lift the two sides of the spline shaft 8, and the lifting plate 8 can be driven by the air cylinders 6 are symmetrically, and the lifting plate 8 can be installed, and the lifting plate 6 is installed at two sides and has low price, and the lifting stability is convenient;

the device also comprises a variable frequency motor 2 arranged on the lower surface of the base plate 1, wherein the top of an output shaft of the variable frequency motor 2 extends to the upper side of the base plate 1 and is fixedly provided with a driving wheel 14, and a synchronous belt 13 is arranged between the driving wheel 14 and a driven wheel 702; through the lower surface mounting inverter motor 2 at base plate 1 to set up action wheel 14 on inverter motor 2's output shaft, inverter motor 2 can drive action wheel 14 rotation, is provided with hold-in range 13 between action wheel 14 and the follower 702, realizes the rotation drive of follower 702, realizes the rotation of integral key shaft 9 in turn, drives fan blade 4 rotation.

As shown in fig. 1 and fig. 2, in some embodiments, a plurality of limiting protrusions 704 are integrally formed on the inner side of the positioning sleeve 703, and a limiting groove 3 adapted to the limiting protrusion 704 is formed at a position of the spline shaft 9 corresponding to the limiting protrusion 704; it should be noted that, this design mode can realize the spacing effect between spline shaft 9, the positioning sleeve 703, and when follower 702, positioning sleeve 703 rotate, can drive spline shaft 9 rotation, does not influence the lift of spline shaft 9 simultaneously.

As shown in fig. 1, in some embodiments, a protective cover 5 is fixedly connected to the lower surface of the substrate 1 above the fan blades 4, and when the fan blades 4 move upwards, the fan blades 4 can be hidden inside the protective cover 5, so that hidden protection of the fan blades 4 is realized, and the influence of substances such as dust is reduced.

As shown in fig. 1, in some embodiments, a clearance fit bearing 10 is provided at the connection between the end of the spline shaft 9 and the lifter plate 8 to achieve stable rotation of the spline shaft 9 on the lifter plate 8.

As shown in fig. 1, in some embodiments, two limit holes symmetrically distributed are formed in the lifting plate 8, and limit rods 11 are inserted in the limit holes of the lifting plate 8, the lower ends of the limit rods 11 are fixedly connected to the base plate 1, the limit effect of the lifting plate 8 can be achieved in this way, shaking is prevented, the influence of rotation of the spline shaft 9 on the air cylinder 6 and the lifting plate 8 is reduced, shaking is avoided, the service life is prolonged, the upper surface of the lifting plate 8 is fixedly connected with a protective sleeve 12 outside the limit rods 11, the limit rods 11 are slidably connected to the inner sides of the protective sleeve 12, and the limit effect of the limit rods 11 on the lifting plate 8 is increased.

The working principle and the application steps of the utility model are as follows: during the use, inverter motor 2 drives action wheel 14 rotation, the mode through hold-in range 13 drives follower 702 rotation, realize the synchronous operation of positioning sleeve 703, spline shaft 9, the spacing protruding 704 adaptation of positioning sleeve 703 is in the spacing groove 3 of spline shaft 9, realize the rotatory effect of spline shaft 9 then, the rotation of spline shaft 9 can drive fan blade 4 and rotate, realize the cooling in workshop, trade wind, can adjust the height of fan blade 4 according to the demand, then adjust the cooling effect, during the regulation, drive cylinder 6 works, cylinder 6 drives lifter plate 8 and goes up and down, lifter plate 8 rises or moves down along gag lever post 11, the top rotation of spline shaft 9 is connected on lifter plate 8, realize the regulation of spline shaft 9 height, then adjust the height of fan blade 4, fan blade 4 can hide it in protection casing 5 when not using, form the guard action.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. An industrial cooling variable frequency fan, includes base plate (1), its characterized in that: a spline shaft (9) is arranged on a rotary positioning structure (7) on the upper surface of the base plate (1), the rotary positioning structure (7) comprises a base (701) fixedly connected to the base plate (1) and a driven wheel (702) rotatably connected to the base (701), a positioning sleeve (703) is fixedly connected to the center of the inner side of the driven wheel (702), the spline shaft (9) is slidably connected to the inner side of the positioning sleeve (703), a plurality of fan blades (4) distributed in an annular array are fixedly connected to a turntable at the lower end of the spline shaft (9), a lifting plate (8) is arranged at the upper end of the spline shaft (9), and two symmetrically distributed cylinders (6) are arranged between two sides of the lifting plate (8) and the base plate (1);

the device is characterized by further comprising a variable frequency motor (2) arranged on the lower surface of the base plate (1), wherein the top of an output shaft of the variable frequency motor (2) extends to the upper side of the base plate (1) and is fixedly provided with a driving wheel (14), and a synchronous belt (13) is arranged between the driving wheel (14) and a driven wheel (702).

2. The industrial cooling variable frequency fan according to claim 1, wherein: the inner side integrated into one piece of locating sleeve (703) has a plurality of spacing protruding (704), and spacing groove (3) with spacing protruding (704) adaptation are seted up in spacing protruding (704) department corresponding of integral key shaft (9).

3. The industrial cooling variable frequency fan according to claim 1, wherein: the lower surface of the base plate (1) is fixedly connected with a protective cover (5) above the fan blades (4).

4. The industrial cooling variable frequency fan according to claim 1, wherein: and a clearance fit bearing (10) is arranged at the joint between the end part of the spline shaft (9) and the lifting plate (8).

5. The industrial cooling variable frequency fan according to claim 1, wherein: two limit holes which are symmetrically distributed are formed in the lifting plate (8), limit rods (11) are inserted in the limit holes of the lifting plate (8), the lower ends of the limit rods (11) are fixedly connected to the base plate (1), and a protective sleeve (12) is fixedly connected to the outer portion of the upper surface of the lifting plate (8) located on the limit rods (11).