CN216769647U

CN216769647U - Ventilation fan for dust-free workshop ventilation

Info

Publication number: CN216769647U
Application number: CN202220506661.1U
Authority: CN
Inventors: 姜斌; 张伟巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-17
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses a ventilating fan for ventilating a dust-free workshop, which comprises: ventilating fan frame structure, removal supporting structure, flabellum angle adjusting device include servo motor, servo motor safety cover, servo motor support, first gear housing, drive gear, flabellum angle adjusting gear, spacing card, anticreep card, connecting axle, flabellum, and removal supporting structure function can drive servo motor back-and-forth movement, drive gear also moves the back-and-forth movement thereupon, realizes drive gear with flabellum angle adjusting gear's meshing and separation, when the two meshes, servo motor starts, and the flabellum can change business turn over wind direction and angle thereupon, realizes the function conversion of air supply and exhaust, accomplishes two kinds of gear separation behind the function conversion, then starts main motor and makes ventilating fan rotate.

Description

Ventilation fan for dust-free workshop ventilation

Technical Field

The utility model relates to the field of dust-free workshops, in particular to a ventilating fan for ventilating dust-free workshops.

Background

Because the flabellum of ventilation fan has the inclination, the direction of delivery of wind is influenced by the inclination when the flabellum rotates, therefore current flabellum is after the installation is fixed, and the ventilation fan just can only play the exhaust fan of the effect of exhaust, or only plays the air supply fan of the effect of air supply, and the function is more single, need exhaust the environment of the air supply often, just need set up two kinds of ventilation fans, has improved user's cost.

In the prior art, the main frame base and the fan of the ventilating fan have universality, and manufacturers do not need to produce each special component of the exhaust fan or the intake fan any more, and can produce the same main frame base and the fan, so long as the assembly direction of the fan is selected and the required combination piece is selected according to requirements in the assembly stage, the components can form an 'exhaust fan' or an 'intake fan', although the problem of single function is solved, the cost is saved, the components need to be reassembled when the orientation of the ventilating fan is changed, the process is complex, time and labor are wasted, and the ventilating fan for ventilating the existing dust-free workshop is improved.

SUMMERY OF THE UTILITY MODEL

1. Solves the technical problem

Aiming at the defects of the prior art, the utility model provides the ventilating fan for ventilating the dust-free workshop, which integrates the exhaust fan and the air supply fan into a whole and solves the problems of complex process, time consumption and labor consumption when the ventilating fan changes the function.

2. Technical scheme

In order to achieve the purpose, the utility model provides a ventilating fan for ventilating dust-free workshops, which comprises a ventilating fan outer frame structure and a main motor, wherein the main motor is fixedly arranged in the ventilating fan outer frame structure, the ventilating fan further comprises a fan blade angle adjusting device, the fan blade angle adjusting device comprises a servo motor, a first gear shell, a driving gear and a fan blade assembly, the fan blade assembly comprises fan blades, a fan blade angle adjusting gear and a connecting shaft, one end of the connecting shaft is fixedly connected with the fan blades, the other end of the connecting shaft is fixedly connected with the fan blade angle adjusting gear, the axial line of the connecting shaft and the central line of the fan blades are superposed, the connecting shaft is rotatably connected to the first gear shell, the driving gear is rotatably connected to the first gear shell, the fan blade angle adjusting gear is positioned in the first gear shell and is meshed with the driving gear, and the output end of the servo motor is coaxially and fixedly connected with the driving gear, the body of servo motor is connected in the outer frame structure of the ventilating fan, and the output end of the main motor is fixedly connected with the first gear shell.

Adopt above-mentioned technical scheme, clockwise or anticlockwise rotate through servo motor and drive gear and rotate, drive gear drives flabellum angle adjusting gear clockwise or anticlockwise rotation, the flabellum of connection on flabellum angle adjusting gear also clockwise or anticlockwise rotates thereupon, thereby the direction of flabellum slope has been changed, realize the function conversion that the ventilation fan air inlet was gone into or airs exhaust from this, only need set up a ventilation fan just so and can satisfy air inlet and two kinds of demands of airing exhaust.

Preferably, the axis of the fan blade angle adjusting gear is perpendicular to the axis of the driving gear, and the driving gear and the fan blade angle adjusting gear are both bevel gears.

By adopting the technical scheme, the driving gear can be vertical to the central axis of the fan blade angle adjusting gear.

Preferably, the fan blade comprises a main fan blade and a dust adsorption plate, the dust adsorption plate is rectangular, and the dust adsorption plate is inserted into one side of the main fan blade.

By adopting the technical scheme, the dust adsorption plate is convenient to replace or take down the dust adsorption plate for cleaning.

Preferably, the dust adsorption plate is an electrostatic adsorption plate.

By adopting the technical scheme, the dust adsorption plate is static, when the dust adsorption plate is close to uncharged dust or particles, the dust or the particles can generate charges with opposite polarities, so that the dust or the particles are adsorbed on the dust adsorption plate, and the material of the dust adsorption plate can not generate chemical reaction with the dust or the particles, thereby protecting the environment.

Preferably, the fan blade assembly is provided with a plurality of groups and is uniformly distributed by taking the axis of the driving gear as the center, the first gear shell is provided with shaft holes matched with the connecting shafts, the axis of each shaft hole is intersected with the axis of the driving gear at one point, and a damping ring is coaxially and fixedly connected in each shaft hole.

By adopting the technical scheme, each shaft hole is intersected at one point, the driving gear is superposed with the axis of the first gear shell, when the driving gear rotates, all the fan blade angle adjusting gears drive the fan blades to change the angle clockwise or anticlockwise with the same amplitude, the damping ring is arranged to stabilize the fan blades, and the fan blades are prevented from axially sliding along the connecting rod when the fan rotates and changing the angle when the fan rotates.

The preferred, ventilating fan frame structure includes ventilating fan frame, main motor support, disinfection lamp area and protection network, main motor support frame adopts the X type, main motor support fixed connection be in ventilating fan frame inner wall, a plurality of disinfection lamp area fixed mounting be in ventilating fan frame inner wall, the protection network fixed mounting be in ventilating fan frame front end, disinfection lamp area be located the protection network with between the main motor support.

Adopt above-mentioned technical scheme, main motor support adopts the X type can be with its four bracing piece fixed connection on four angles of frame that correspond, has increased the stability of ventilating fan frame, and what main motor can stabilize simultaneously fixes in the circular clamp at main motor support middle part, makes the ventilating fan more stable at the during operation, and the protection network can prevent that debris from getting into dust-free workshop through the ventilating fan, and the disinfection lamp area can effectively disinfect, guarantees to get into the air quality in the workshop.

Preferably, the servo motor reciprocates and is fixed relative to the first gear housing along the axial direction of the driving gear through a movable support structure; the movable support structure comprises a movable support, a driving device and a sliding rail, a main body of the servo motor is fixedly arranged on the movable support, the sliding rail is fixed on the outer frame of the ventilating fan along the axial direction of the driving gear, and the movable support is connected to the sliding rail in a sliding mode and driven by the driving device.

By adopting the technical scheme, the movable support can drive the servo motor to axially reciprocate along the driving gear, so that the driving gear is combined with and separated from the fan blade angle adjusting gear, and when the fan blade angle is not required to be adjusted, the driving gear is separated from the fan blade angle adjusting gear, so that the driving gear and the servo motor cannot rotate along with the fan blade angle adjusting gear when the fan rotates, the servo motor is protected, and the load of the main motor is lightened.

The preferred, the movable support includes bracing piece, solid fixed ring, lower support bar, rubber circle, gu fixed ring adopts circularly, lower support bar upper end fixed connection in gu fixed ring lower part, go up the bracing piece lower extreme with gu fixed ring upper portion fixed connection, gu fixed ring inner wall bonding rubber circle, go up bracing piece and sliding rail connection, the lower support bar is connected with drive arrangement.

Adopt above-mentioned technical scheme, the lower extreme fixed connection of two lower support bars is on the belt that corresponds with it, and the upper end of two upper support bars is connected with the slide of the lower surface of ventilating fan frame upper base, and the rubber circle of solid inboard bonding of solid fixed ring makes the servo motor safety cover be connected more firmly with solid fixed ring, prevents when moving movable support and removes that the servo motor safety cover has relative slip with moving movable support.

Preferably, the driving device comprises a driving motor, a motor base, a driving gear, a driven gear, a second gear housing, a bearing, a first rotating shaft, a second rotating shaft, a rotating shaft support, a belt and a connecting rotating shaft, wherein the motor base is fixedly arranged on the upper surface of the lower bottom of the outer frame of the ventilating fan, the driving motor is fixedly arranged on the motor base, the end part of an output shaft of the driving motor is fixedly provided with the driving gear, the driving gear is meshed with the driven gear, the driving gear and the driven gear both adopt cylindrical gears, the diameter of the driving gear is smaller than that of the driven gear, two ends of the first rotating shaft and the second rotating shaft are respectively and fixedly connected with the connecting rotating shaft, the connecting rotating shaft at one end of the second rotating shaft close to the driving motor is fixedly connected with the driven gear, two ends of the first rotating shaft and the second rotating shaft are respectively provided with the rotating shaft support, the pivot supports upper portion fixed mounting have the bearing and with it rotates to be connected to connect the pivot, the pivot supports lower part fixed connection and is in the upper surface of ventilating fan frame lower bottom, first pivot with the second pivot has all been seted up twice spacing groove, first pivot with the second pivot adopts the area to connect, the belt embedding spacing inslot, lower support bar fixed connection be in on the belt.

Adopt above-mentioned technical scheme, driving motor drives the driving gear and rotates, and the driving gear drives the driven gear rotation of meshing with it, drives the second pivot thereupon and rotates, and driven gear's diameter is greater than the diameter of driving gear to reduce driven gear's rotational speed, make the steady slow-speed rotation of second pivot, the second pivot is connected with first pivot area, and the rotation of second pivot drives first pivot through the belt and rotates.

The utility model has the following beneficial effects: the driving gear is driven by the servo motor to rotate clockwise or anticlockwise to enable the fan blade angle adjusting gear meshed with the driving gear to rotate clockwise or anticlockwise, so that the change of the fan blade angle size and the ventilation function of the ventilation fan is realized, the servo motor is fixedly installed in the servo motor protective cover, the servo motor protective cover is fixedly connected with the movable support, the lower part of the movable support is fixedly connected with a belt in the driving device, the upper part of the movable support is connected with the upper bottom slideway of the outer frame of the ventilation fan, the movable support is driven to move when the driving device operates, the servo motor protective cover also moves along with the movable support, the driving gear is driven to move simultaneously, the meshing and separating effects of the driving gear and the fan blade angle adjusting gear are realized, when the ventilation function of the ventilation fan is required to be changed, the main motor is closed, and the driving motor in the driving device is started, make drive gear with fan blade angle modulation gear meshing, then start servo motor changes the business turn over wind direction of fan blade realizes the function conversion, the fan blade by main fan blade with the dust adsorption plate is constituteed, the dust adsorption plate can effectively the dust fall, ventilation fan frame inner wall fixed mounting has the disinfection lamp area plays disinfection's effect, with the cooperation of dust adsorption plate is used, has effectively improved the air quality.

Drawings

FIG. 1 is an exploded view of a ventilation fan for dust free plant ventilation according to the present invention;

FIG. 2 is a schematic view of a fan for a ventilation fan for dust free plant ventilation according to the present invention;

FIG. 3 is a schematic front elevational view of a fan arrangement for a ventilation fan for use in dust free shop ventilation in accordance with the present invention;

FIG. 4 is a schematic view of a fan blade angle adjustment device for a clean room ventilation according to the present invention;

FIG. 5 is a schematic view of a fan blade of a ventilation fan for dust free room ventilation according to the present invention;

FIG. 6 is a schematic view of the connection of the dust absorption plate of the ventilating fan for ventilating a clean room according to the present invention;

FIG. 7 is a top view of a fan blade of a ventilation fan for dust free room ventilation according to the present invention;

FIG. 8 is a schematic view showing the positions of the outer frame and the movable support of the ventilating fan for dust-free shop ventilation according to the present invention;

FIG. 9 is a schematic elevational view of a ventilation fan housing and movable support structure for use in dust free room ventilation according to the present invention;

FIG. 10 is a schematic view of a ventilation fan moving bracket for dust free plant ventilation according to the present invention;

FIG. 11 is a schematic view of a ventilating fan driving apparatus for ventilating a dust-free shop according to the present invention;

FIG. 12 is a schematic view showing the connection of a rotating shaft of a ventilating fan for ventilating a dust-free shop according to the present invention;

fig. 13 is a schematic view showing the overall construction of a ventilating fan for dust-free shop ventilation according to the present invention.

In the figure 1, a servo motor protective cover; 2. a servo motor; 3. a fan blade; 301. a main fan blade; 302 a dust adsorption plate; 4. a drive gear; 5. a main motor; 6. a first gear housing; 7. a fan blade angle adjusting gear; 8. a servo motor support; 9. a junction box; 10. a limiting card; 11. a damping ring; 12. a connecting shaft; 13. Preventing the card from falling off; 14. a ventilating fan outer frame; 15. a main motor support; 16. moving the support; 1601. an upper support rod; 1602. a fixing ring; 1603. a lower support rod; 1604. a rubber ring; 17. a sterilizing lamp strip 18 and a driving motor; 19. a rotating shaft support; 20. a first rotating shaft; 21. a belt; 22. a driving gear; 23. a driven gear; 24. a bearing; 25. a motor base; 26. a slide rail; 27. a second gear housing; 28. connecting the rotating shaft; 29. a limiting groove; 30. a protective net; 31. heat dissipation holes; 32. a second rotating shaft.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the utility model with reference to the description.

The utility model provides a ventilating fan for ventilating a dust-free workshop, which comprises: flabellum angle adjusting device, ventilating fan frame structure and removal supporting structure.

As shown in FIG. 3 and FIG. 4, the blade angle adjusting device comprises a servo motor 2, a servo motor protecting cover 1, a servo motor support 8, a first gear housing 6, a driving gear 4, a blade angle adjusting gear 7, a connecting shaft 12 and a blade 3, wherein two groups of heat dissipation holes 31 are symmetrically arranged on the left and right of the circumferential surface of the servo motor protecting cover, the servo motor support 8 is fixedly arranged on the inner wall of the servo motor protecting cover 1, a hoop is arranged in the middle of the servo motor support 8, the shape of the hoop can be set according to the cross-sectional shape of the servo motor body, in the embodiment, the hoop is a square hoop, four corners of the square hoop are respectively and fixedly connected with one end of a supporting rod along the diagonal direction, so that the servo motor support 8 is roughly X-shaped, the other end of the supporting rod is fixedly connected with the inner wall of the servo motor protecting cover, the servo motor 2 is fixedly arranged on the inner side of the hoop in the middle of the servo motor support 8, as shown in fig. 4, the central axes of the output shaft of the servo motor 2, the driving gear 4 and the first gear housing 6 are all the axis a, the central axes of the fan blade angle adjusting gear 7 and the connecting shaft 12 are all the axis b, the axis a is vertical to the axis b, the output shaft of the servo motor 2 sequentially passes through the rear end surface of the servo motor protective cover 1 and the front end surface of the first gear housing 6 along the axis a, the driving gear 4 is coaxially and fixedly installed on the output end of the output shaft of the servo motor, the driving gear 4 is meshed with the fan blade angle adjusting gear 7, the driving gear 4 and the fan blade angle adjusting gear 7 are both bevel gears and are installed inside the first gear housing 6, because the axis a is vertical to the axis b, the driving gear 4 is vertical to the axis of the fan blade angle adjusting gear 7, the bevel gears can meet the requirements better, the anti-releasing clamp 13 is fixedly installed on the output shaft of the servo motor on the small end side of the driving gear 4, a limit clamp 10 is fixedly arranged on an output shaft at one side of the large end of a driving gear 4, the limit clamp 10 is arranged in a first gear shell 6, the limit clamp 10 is fixedly arranged on the output shaft of a servo motor between the rear end surface of a servo motor protective cover 1 and the front end surface of the first gear shell 6, a certain distance is reserved between the limit clamp 10 and the limit clamp in the first gear shell 6, the large end of a fan blade angle adjusting gear 7 is coaxially and fixedly connected with one end of a connecting shaft 12, the other end of the connecting shaft 12 is fixedly provided with a fan blade 3, the connecting shaft 12 is rotatably connected with the first gear shell 6, as shown in figure 7, the driving gear 4 is driven to rotate by clockwise or anticlockwise rotation of a servo motor 2, the driving gear 4 drives the fan blade angle adjusting gear 7 to rotate clockwise or anticlockwise, and the fan blade 3 connected on the fan blade angle adjusting gear 7 also rotates clockwise or anticlockwise along with the fan blade angle adjusting gear 7, the included angle position of the axis d of the fan blade 3 and the plane C is changed, so that the orientation of the fan blade 3 is changed, the function conversion of air inlet or air exhaust of the ventilating fan is realized, meanwhile, the air inlet and outlet quantity can be adjusted by changing the included angle, the rear end face of the first gear shell is connected with the output shaft of the main motor 5, and the other end face of the main motor 5 is fixedly provided with the junction box 9.

As shown in fig. 5, the fan blade includes a main fan blade 301 and a dust adsorption plate 302, the dust adsorption plate 302 is an electrostatic adsorption plate, the dust adsorption plate 302 is rectangular, as shown in fig. 3, the dust adsorption plate 302 is inserted into an edge of one side of the main fan blade 301, a through groove is formed on a corresponding edge of the main fan blade 301, an insertion strip matched with the through groove on the side of the main fan blade 301 is arranged on a side edge of the dust adsorption plate 302 in a length direction, the insertion strip is inserted into the through groove and is in interference connection with the through groove, the insertion structure facilitates the dust adsorption plate 302 to be disassembled and assembled, which facilitates the cleaning and replacement of the dust adsorption plate 302, the dust adsorption plate 302 itself carries static electricity, when the dust adsorption plate is close to uncharged dust or particles, the dust or particles can generate charges with opposite polarities, thereby the dust or particles are adsorbed on the dust adsorption plate, and the material of the dust adsorption plate can not generate chemical reaction with the dust or particles, therefore, the environment is protected.

As shown in fig. 4, the fan blade assembly is provided with a plurality of sets and is uniformly distributed by taking the axis of the driving gear 4 as the center, the first gear housing 6 is cylindrical, the first gear housing is provided with shaft holes matched with the connecting shafts, a damping ring 11 is coaxially and fixedly connected with each circular hole, the connecting shaft 12 is rotatably connected with the first gear housing 6 through the damping ring 11 fixedly connected in the shaft holes, therefore, the central axes of the shaft holes and the damping ring 12 are also b axes, the axis b of each circular shaft hole is converged on the axis a of the first gear housing 6, the axes b of the six circular holes are converged on the axis a, so that the axes of the fan blade angle adjusting gears 7 are converged on the axis b, the driving gear 4 is consistent with the axis of the first gear housing 6, when the driving gear 4 rotates, all the fan blade angle adjusting gears 7 drive the fan blades 3 to change angles clockwise or anticlockwise with the same amplitude, the damping ring 11 is provided to stabilize the blades, preventing the blades from sliding along the b-axis when the fan rotates, and preventing the blades from changing angles when the fan rotates.

As shown in fig. 8, ventilating fan frame structure, it includes ventilating fan frame 14, main motor support 15, disinfection lamp area 17, protection network 30, ventilating fan frame 14 is square tube-shape, main motor support 15 adopts the X type, main motor support 15 middle part is equipped with circular clamp, along four bracing pieces of the even fixedly connected with in circular clamp periphery, the free end of four bracing pieces of main motor support 15 respectively with four angle fixed connection of ventilating fan frame inner wall, a plurality of disinfection lamp area 17 fixed mounting are at ventilating fan frame 14 inner wall, as shown in fig. 13, protection network 30 fixed mounting is in ventilating fan frame 14 left side one end, disinfection lamp area 17 is located between protection network 30 and the main motor support 15.

As shown in fig. 8 and 9, the movable support structure includes a movable support 16, a driving device, and slide rails 26, two slide rails 26 are symmetrically and fixedly installed on the lower surface of the upper bottom of the ventilating fan outer frame 14, two upper support rods 1601 of the movable support 16 are connected with the upper bottom of the ventilating fan outer frame 14 by slide ways, two lower support rods 1603 of the movable support 16 are fixedly connected to corresponding belts 21, the driving device operates to move the movable support 16 back and forth along with the belts 21, the movable support 16 drives the servo motor protective cover 1 back and forth, the driving gear 4 is fixedly connected to the output shaft of the servo motor, the driving gear 4 can move back and forth along with the belts, so that the driving gear 4 is engaged with and disengaged from the fan blade angle adjusting gear 7, when the fan rotates, the driving gear 4 is disengaged from the fan blade angle adjusting gear 7, and the driving gear and the servo motor cannot rotate along with the belts.

As shown in fig. 9 and 10, the movable support 16 includes an upper support rod 1601, a fixing ring 1602, a lower support rod 1603, a rubber ring 1604, the fixing ring 1602 is circular, the upper end bilateral symmetry of the two lower support rods 1603 is fixedly connected to the lower portion of the fixing ring 1602, the lower end of the two upper support rods 1601 is fixedly connected to the upper portion of the fixing ring 1602 in bilateral symmetry, the rubber ring 1604 is fixed to the inner side of the fixing ring 1602, the lower end of the two lower support rods 1603 is fixedly connected to a belt 21 corresponding to the lower end of the two lower support rods 1603, the upper end of the two upper support rods 1601 is connected to a lower surface slideway at the upper bottom of a ventilating fan outer frame, the rubber ring 1604 bonded to the inner side of the fixing ring 1602 makes the servo motor protection cover 1 and the fixing ring 1602 be connected more stably, and prevents the servo motor protection cover 1 from sliding relative to the movable support 16 when the movable support 16 moves.

As shown in fig. 11 and 12, the driving device includes a driving motor 18, a motor base 25, a driving gear 22, a driven gear 23, a second gear housing 27, a bearing 24, a first rotating shaft 20, a second rotating shaft 32, a rotating shaft support 19, a belt 21, and a connecting rotating shaft 28, the motor base 25 is fixedly installed on the upper surface of the bottom of the ventilating fan outer frame 14, the driving motor 18 is fixedly installed on the motor base 25, the driving gear 22 is fixedly installed at the end of the output shaft of the driving motor, the driving gear 22 is engaged with the driven gear 23, the driving gear 22 and the driven gear 23 both adopt cylindrical gears, the diameters of the driving gear are smaller than those of the driven gear, two ends of the first rotating shaft 20 and the second rotating shaft 32 are respectively fixedly connected with the rotating shaft 28, the connecting rotating shaft 28 at one end of the second rotating shaft 32 close to the driving motor 18 is fixedly connected with the driven gear 23, two ends of the first rotating shaft 20 and the second rotating shaft 32 are respectively provided with the rotating shaft support 19, the pivot supports 19 upper portion fixed mounting has bearing 24 and rotates with being connected pivot 28 and is connected, 19 lower part fixed connection is at the upper surface of ventilating fan frame 14 lower bottom in the pivot, two spacing grooves 29 have all been seted up with second pivot 32 to first pivot 20, first pivot 20 adopts the area to be connected with second pivot 32, belt 21 embedding spacing inslot 29, driving motor 18 drives driving gear 22 and rotates, driving gear 22 drives driven gear 23 with it meshing and rotates, drive second pivot 32 thereupon and rotate, driven gear 23's diameter is greater than driving gear 22's diameter, thereby reduce driven gear 23's rotational speed, second pivot 32 rotates and drives first pivot 20 through belt 21 and rotates.

In conclusion, the servo motor 2 drives the driving gear 4 to rotate clockwise or anticlockwise to enable the wheel of the fan blade angle adjusting gear 7 meshed with the driving gear to rotate clockwise or anticlockwise to change the orientation of the fan blade, so that the air inlet and outlet functions of the ventilating fan are changed, the servo motor 2 is fixedly arranged in the servo motor protective cover 1, the servo motor protective cover 1 is fixedly connected with the movable support 16, the lower part of the movable support 16 is fixedly connected with a belt 21 in the driving device, the upper part of the movable support is connected with an upper bottom slideway of the outer frame 14 of the ventilating fan, when the driving device operates, the movable support 16 is driven to move, the servo motor protective cover 1 also moves along with the movable support, the driving gear 4 is driven to move at the same time, the meshing and separating effects of the driving gear 4 and the fan blade angle adjusting gear 7 are realized, and the moving distance is the distance between the two limiting clamps 10 on the output shaft of the servo motor, the front end face of the first gear housing 6 is located between the two limit cards 10, when the movable support 16 moves forward and backward, the two limit cards 10 are blocked by the front end face of the first gear housing 6, so as to limit the distance of the forward and backward movement of the movable support 16, the distance is moved to separate the driving gear 4 from the fan blade angle adjusting gear 7, when the ventilation fan air inlet and outlet function needs to be changed, the main motor 5 is turned off, the driving motor 18 in the driving device is started, the driving gear 4 is meshed with the fan blade angle adjusting gear 7, then the servo motor 2 is started to change the air inlet and outlet direction of the fan blade 3, so as to realize function conversion, the fan blade 3 consists of a main fan blade 301 and a dust adsorption plate 302, the dust adsorption plate 302 can effectively fall dust, a disinfection lamp strip 17 is fixedly installed on the inner wall of the ventilation fan outer frame 14, so as to play a disinfection and sterilization role and is matched with the dust adsorption plate 302, effectively improving the air quality.

While embodiments of the utility model have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A ventilating fan for ventilating dust-free workshops comprises a ventilating fan outer frame structure and a main motor, wherein the main motor is fixedly arranged in the ventilating fan outer frame structure, and the ventilating fan is characterized by further comprising a fan blade angle adjusting device which comprises a servo motor, a first gear shell, a driving gear and a fan blade assembly, the fan blade assembly comprises fan blades, a fan blade angle adjusting gear and a connecting shaft, one end of the connecting shaft is fixedly connected with the fan blades, the other end of the connecting shaft is fixedly connected with the fan blade angle adjusting gear, the axis of the connecting shaft and the central line of the fan blades coincide, the connecting shaft is rotatably connected onto the first gear shell, the driving gear is rotatably connected into the first gear shell, the fan blade angle adjusting gear is positioned in the first gear shell and meshed with the driving gear, the output end of the servo motor is coaxially and fixedly connected with the driving gear, the body of servo motor is connected in the outer frame structure of the ventilating fan, and the output end of the main motor is fixedly connected with the first gear shell.

2. The ventilation fan for dust-free workshop ventilation according to claim 1, wherein the axis of the fan blade angle adjusting gear is perpendicular to the axis of the driving gear, and the driving gear and the fan blade angle adjusting gear are both bevel gears.

3. The ventilation fan for dust-free workshop ventilation as claimed in claim 1, wherein the fan blades include a main fan blade and a dust adsorption plate, the dust adsorption plate is rectangular, and the dust adsorption plate is inserted into one side of the main fan blade.

4. A ventilation fan for dust-free shop ventilation according to claim 3, wherein said dust-adsorbing panel is an electrostatic adsorption panel.

5. The ventilating fan for the dust-free workshop according to claim 1, wherein the fan blade assemblies are provided with a plurality of groups and are uniformly distributed by taking the axis of the driving gear as a center, the first gear housing is provided with shaft holes matched with the connecting shafts, the axis of each shaft hole is intersected with the axis of the driving gear at one point, and a damping ring is coaxially and fixedly connected in each shaft hole.

6. The ventilating fan for ventilating a dust-free workshop, according to claim 1, wherein the ventilating fan outer frame structure comprises a ventilating fan outer frame, a main motor support frame, a sterilizing lamp strip and a protective net, the main motor support frame is of an X type, the main motor support frame is fixedly connected to the inner wall of the ventilating fan outer frame, the sterilizing lamp strip is fixedly installed on the inner wall of the ventilating fan outer frame, the protective net is fixedly installed at the front end of the ventilating fan outer frame, and the sterilizing lamp strip is located between the protective net and the main motor support frame.

7. A ventilating fan for dust-free workshop ventilation according to claim 1, wherein the servo motor is reciprocally movable and fixed relative to the first gear housing in the axial direction of the driving gear by means of a moving support structure; the movable support structure comprises a movable support, a driving device and a sliding rail, a main body of the servo motor is fixedly arranged on the movable support, the sliding rail is fixed on the outer frame of the ventilating fan along the axial direction of the driving gear, and the movable support is connected to the sliding rail in a sliding mode and driven by the driving device.

8. The ventilating fan for the ventilation of the dust-free workshop as claimed in claim 7, wherein the movable support comprises an upper supporting rod, a fixing ring, a lower supporting rod and a rubber ring, the fixing ring is circular, the upper end of the lower supporting rod is fixedly connected to the lower portion of the fixing ring, the lower end of the upper supporting rod is fixedly connected to the upper portion of the fixing ring, the rubber ring is bonded to the inner wall of the fixing ring, the upper supporting rod is connected with a sliding rail, and the lower supporting rod is connected with a driving device.

9. The ventilating fan for ventilating a dust-free workshop as claimed in claim 8, wherein the driving means includes a driving motor, a motor base, a driving gear, a driven gear, a second gear housing, a bearing, a first rotating shaft, a second rotating shaft, a shaft support, a belt, and a connecting shaft, the motor base is fixedly mounted on the upper surface of the bottom of the outer frame of the ventilating fan, the driving motor is fixedly mounted on the motor base, the driving gear is fixedly mounted on the end of the output shaft of the driving motor, the driving gear is engaged with the driven gear, the driving gear and the driven gear are both cylindrical gears and the diameter of the driving gear is smaller than that of the driven gear, the two ends of the first rotating shaft and the two ends of the second rotating shaft are respectively fixedly connected with the connecting shaft, and the connecting shaft at the end of the second rotating shaft close to the driving motor is fixedly connected with the driven gear, first pivot with second pivot both ends set up respectively the pivot is supported, the pivot supports upper portion fixed mounting have the bearing and with it rotates to connect the pivot to connect, the pivot supports lower part fixed connection in the upper surface that the ventilating fan frame was gone to the bottom, first pivot with the second pivot has all been seted up twice spacing groove, first pivot with the second pivot adopts the area to connect, the belt embedding the spacing inslot, lower support bar fixed connection be in on the belt.