CN215949864U - High-efficient back bend centrifugal fan - Google Patents

Abstract

The utility model discloses a high-efficiency backward-bending centrifugal ventilator, which comprises a ventilator body, wherein a hollow groove is reserved at an air inlet on the side wall of the ventilator body, a bolt is arranged inside the hollow groove, the surface of the bolt is in threaded connection with a fixed plate, the end part of the fixed plate is fixedly provided with a filter screen, the filter screen is mutually attached to the ventilator body, the side surface of the ventilator body is fixedly provided with a first rotating shaft through a fixed frame, the end part of the first rotating shaft is rotatably connected with a support, the side wall of the support is provided with an inner groove, the inner part of the inner groove is provided with a second rotating shaft, the surface of the second rotating shaft is fixedly provided with a worm wheel, the high-efficiency backward-bending centrifugal ventilator can drive an adjusting structure to operate when the rotating disc is rotated through mutual matching of the first rotating shaft, the support, the inner groove, the second rotating shaft, the worm wheel, a worm, a rotary disc and an adjusting mechanism and the like, so that the angle of an air outlet of the ventilator body is changed, the problem of current equipment air outlet fixed, can't be suitable for different use angles is solved.

Description

High-efficient back bend centrifugal fan

Technical Field

The utility model relates to the technical field of backward-bending centrifugal ventilators, in particular to a high-efficiency backward-bending centrifugal ventilator.

Background

The high-efficiency backward-bending centrifugal ventilator is a machine which can convert electric energy into mechanical energy, form air flow and discharge air, and is generally applied to occasions such as factories, mines, tunnels, cooling towers and the like to achieve industrial purposes such as ventilation, dust exhaust and the like.

However, most of the existing high-efficiency backward-bending centrifugal fans are not provided with a sundry intercepting device, so that after long-time use, a large amount of dust and the like can be remained in an internal circuit of the equipment, normal use of the equipment is further influenced, and the air outlet is mostly fixed, so that angle adjustment cannot be carried out according to different use requirements. To the above-mentioned problem, need carry out the innovative design on original high-efficient back bend centrifugal fan's basis urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency backward-bending centrifugal fan, which aims to solve the problems that the conventional high-efficiency backward-bending centrifugal fan is mostly not provided with a sundry blocking device, a large amount of dust and the like are remained in an internal circuit of equipment after the high-efficiency backward-bending centrifugal fan is used for a long time, the normal use of the equipment is further influenced, and an air outlet is mostly fixed, so that the angle cannot be adjusted according to different use requirements.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-efficient back bend centrifugal fan, includes the organism, the lateral wall air intake department of organism reserves the dead slot, the inside of dead slot is provided with the bolt, the surperficial threaded connection of bolt has the fixed plate, the end fixing of fixed plate has the filter screen, the filter screen laminates with the organism each other, the side of organism is fixed with first pivot through the mount, the tip of first pivot is rotated and is connected with the support, the inside groove has been seted up to the lateral wall of support, the inside of inside groove is provided with the second pivot, the fixed surface of second pivot has the worm wheel, the side of worm wheel is connected with the worm, the inside of support is run through to the tip of worm, the worm passes through bearing and support constitution rotating-structure, the end fixing of worm has the carousel, the surface of second pivot is provided with adjustment mechanism.

Preferably, the inner wall of the empty groove is provided with threads, and the empty groove is in threaded connection with the bolt.

Preferably, the worm wheel and the worm form a meshing structure, and the number of the worm wheels is two.

Preferably, adjustment mechanism includes movable block, riser and gear, the surface of second pivot is provided with the movable block, the end fixing of movable block has the riser, the side of riser is connected with the gear, gear and first pivot fixed connection.

Preferably, the surface of the second rotating shaft is provided with threads, and the movable block is in threaded connection with the second rotating shaft.

Preferably, the surface of the vertical plate is provided with a tooth block, the vertical plate and the gear form a meshing structure, and the vertical plate and the gear are symmetrically distributed about the longitudinal center line of the machine body.

Compared with the prior art, the utility model has the beneficial effects that: the high-efficiency backward-bending centrifugal ventilator is provided with a fan body,

1. through the mutual cooperation of parts such as organism, dead slot, bolt, fixed plate and filter screen for inside the filter screen can block external dust and get into the organism, and then protected the inside circuit of organism, avoided the organism to be infected with the problem that the dust reduced life because of the circuit.

2. Through mutually supporting of parts such as first pivot, support, inside groove, second pivot, worm wheel, worm, carousel and adjustment mechanism for when rotating the carousel, can drive the operation of adjustment structure, and then make the air outlet angle of organism change, it is fixed to have solved the existing equipment air outlet, can't be suitable for the problem of different use angles.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of an adjusting structure according to the present invention;

FIG. 4 is a schematic view of a top-down structure of the movable block of the present invention.

In the figure: 1. a body; 2. an empty groove; 3. a bolt; 4. a fixing plate; 5. a filter screen; 6. a first rotating shaft; 7. a support; 8. an inner tank; 9. a second rotating shaft; 10. a worm gear; 11. a worm; 12. a turntable; 13. an adjustment mechanism; 1301. a movable block; 1302. a vertical plate; 1303. a gear.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high-efficient back bend centrifugal fan, including organism 1, the lateral wall air intake department of organism 1 reserves dead slot 2, the inside of dead slot 2 is provided with bolt 3, the surface threaded connection of bolt 3 has fixed plate 4, the end fixing of fixed plate 4 has filter screen 5, filter screen 5 and organism 1 are laminated each other, the side of organism 1 is fixed with first pivot 6 through the mount, the tip of first pivot 6 rotates and is connected with support 7, inside groove 8 has been seted up to the lateral wall of support 7, the inside of inside groove 8 is provided with second pivot 9, the surface fixing of second pivot 9 has worm wheel 10, the side of worm wheel 10 is connected with worm 11, the inside of support 7 is run through to the tip of worm 11, worm 11 passes through bearing and support 7 constitution revolution mechanic, the end fixing of worm 11 has carousel 12, the surface of second pivot 9 is provided with adjustment mechanism 13.

The inner wall of dead slot 2 is provided with the screw thread, and dead slot 2 is threaded connection with bolt 3, and threaded connection makes bolt 3 break away from the contact back with dead slot 2, can release the fixed to filter screen 5, then can wash the change to filter screen 5.

Worm wheel 10 and worm 11 constitute the engagement structure, and worm wheel 10 is provided with two, and the engagement structure can drive worm wheel 10 rotatory when making worm 11 rotate, and then drives second pivot 9 rotatory, accomplishes subsequent angle modulation, and two worm wheels 10 make two second pivots 9 can rotate in step simultaneously, and then make angle modulation can steadily go on.

The adjusting mechanism 13 comprises a movable block 1301, a vertical plate 1302 and a gear 1303, the movable block 1301 is arranged on the surface of the second rotating shaft 9, the vertical plate 1302 is fixed to the end of the movable block 1301, the gear 1303 is connected to the side of the vertical plate 1302, and the gear 1303 is fixedly connected with the first rotating shaft 6.

The surface of second pivot 9 is provided with the screw thread, and movable block 1301 is threaded connection with second pivot 9, and threaded connection can drive movable block 1301 displacement when making second pivot 9 pivoted, and then drives riser 1302 and remove, makes it can cooperate gear 1303 to accomplish the angle modulation to organism 1 air outlet.

The surface of riser 1302 is provided with the tooth piece, and riser 1302 constitutes the engagement structure with gear 1303, and riser 1302 and gear 1303 about organism 1's vertical central line symmetric distribution, engagement structure can take gear 1303 to rotate when making riser 1302 remove, and then drive organism 1 through first pivot 6 rotatory, realize the position control to organism 1 air outlet to adapt to different user demands.

The working principle is as follows: when the high-efficiency backward-bending centrifugal fan is used, dust and other impurities in daily work can be blocked outside the fan body 1 by the filter screen 5, the filter screen 5 needs to be detached, replaced or cleaned after being used for a long time, at the moment, a worker can rotate the bolt 3 forwards to take the bolt from the surfaces of the empty groove 2 and the fixing plate 4, then the worker can take the filter screen 5 from the surface of the fan body 1 to carry out corresponding cleaning and replacement, after the operation is completed, the worker can place the processed filter screen 5 back to the original position, then rotate the bolt 3 backwards to enable the bolt to pass through the fixing plate 4 to be connected with the empty groove 2 again, the filter screen 5 can be fixed, if the fan is used, the angle of an air outlet of the fan body 1 needs to be adjusted, the worker can rotate the turntable 12 forwards, and the turntable 12 is fixedly connected with the worm 11, so that the worm 11 is driven to rotate forwards when the turntable 12 rotates forwards, the worm 11 is engaged with the worm wheel 10, so that when the worm 11 rotates forwards, the worm wheel 10 is driven to rotate backwards, and the worm wheel 10 is fixedly connected with the second rotating shaft 9, so that when the worm wheel 10 rotates backwards, the second rotating shaft 9 is driven to rotate backwards, and the second rotating shaft 9 is in threaded connection with the movable block 1301, so that when the second rotating shaft 9 rotates backwards, the movable block 1301 is driven to move upwards, and the movable block 1301 is fixedly connected with the vertical plate 1302, so that when the movable block 1301 moves upwards, the vertical plate 1302 is driven to move upwards, and the vertical plate 1302 is engaged with the gear 1303, so that when the vertical plate 1302 moves upwards, the gear 1303 is driven to rotate backwards, and the gear 1303 is fixedly connected with the first rotating shaft 6, so that when the gear 1303 rotates backwards, the first rotating shaft 6 is driven to rotate backwards, and the air outlet angle of the machine body 1 is changed, when the air outlet is adjusted to a proper position, the rotating disc 12 stops rotating, and under the self-locking characteristic of the transmission of the worm wheel 10 and the worm 11, the worm wheel 10 stops rotating, namely the second rotating shaft 9 stops rotating, and the position of the air outlet of the machine body 1 is fixed accordingly.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims (6)

1. The utility model provides a centrifugal fan bends backward high-efficiently, includes organism (1), its characterized in that: the novel machine is characterized in that an empty groove (2) is reserved at an air inlet of the side wall of the machine body (1), a bolt (3) is arranged inside the empty groove (2), a fixing plate (4) is connected to the surface of the bolt (3) in a threaded manner, a filter screen (5) is fixed to the end portion of the fixing plate (4), the filter screen (5) is attached to the machine body (1), a first rotating shaft (6) is fixed to the side face of the machine body (1) through a fixing frame, a support (7) is connected to the end portion of the first rotating shaft (6) in a rotating manner, an inner groove (8) is formed in the side wall of the support (7), a second rotating shaft (9) is arranged inside the inner groove (8), a worm wheel (10) is fixed to the surface of the second rotating shaft (9), a worm (11) is connected to the side face of the worm wheel (10), the end portion of the worm (11) penetrates through the inside of the support (7), and the worm (11) and the support (7) form a rotating structure through a bearing, and a turntable (12) is fixed at the end part of the worm (11), and an adjusting mechanism (13) is arranged on the surface of the second rotating shaft (9).

2. A high efficiency backward-bending centrifugal fan as claimed in claim 1, wherein: the inner wall of the empty groove (2) is provided with threads, and the empty groove (2) is in threaded connection with the bolt (3).

3. A high efficiency backward-bending centrifugal fan as claimed in claim 1, wherein: the worm wheel (10) and the worm (11) form a meshing structure, and two worm wheels (10) are arranged.

4. A high efficiency backward-bending centrifugal fan as claimed in claim 1, wherein: the adjusting mechanism (13) comprises a movable block (1301), a vertical plate (1302) and a gear (1303), the movable block (1301) is arranged on the surface of the second rotating shaft (9), the vertical plate (1302) is fixed to the end portion of the movable block (1301), the gear (1303) is connected to the side face of the vertical plate (1302), and the gear (1303) is fixedly connected with the first rotating shaft (6).

5. A high efficiency backward-bending centrifugal fan according to claim 4, wherein: the surface of the second rotating shaft (9) is provided with threads, and the movable block (1301) is in threaded connection with the second rotating shaft (9).

6. A high efficiency backward-bending centrifugal fan according to claim 4, wherein: the surface of the vertical plate (1302) is provided with a tooth block, the vertical plate (1302) and the gear (1303) form a meshing structure, and the vertical plate (1302) and the gear (1303) are symmetrically distributed around the longitudinal center line of the machine body (1).

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