CN213870351U

CN213870351U - Centrifugal draught fan

Info

Publication number: CN213870351U
Application number: CN202023089645.7U
Authority: CN
Inventors: 张俊秀
Original assignee: Shandong Taikang Environmental Protection Technology Co ltd
Current assignee: Shandong Taikang Environmental Protection Technology Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-03
Anticipated expiration: 2030-12-18

Abstract

The utility model relates to a centrifugal draught fan, which comprises a base, wherein the top of the base is connected with a casing, the front side of the casing is provided with an air inlet, and the top of the casing is provided with an air outlet; a rotating support frame connected to the base is arranged on the rear side of the shell, a main shaft is rotatably connected above the rotating support frame, an impeller is arranged in the shell, and the impeller is coaxially connected with the main shaft; still be connected with the motor on the base top surface, the motor passes through the belt drive group and connects in the main shaft, the air intake front side is connected with the flange, the flange front side is connected with the filter, the filter includes preceding clamp plate, back clamp plate and the filter sponge between preceding clamp plate and the back clamp plate. This draught fan can reduce the draught fan and dismantle clearance maintenance number of times through set up the filter in the air intake front side, reduces cost of maintenance, reduces workman's intensity of labour.

Description

Centrifugal draught fan

Technical Field

The utility model relates to a ventilation mechanical equipment technical field specifically is a centrifugal draught fan.

Background

The centrifugal draught fan is a driven fluid machine which relies on input mechanical energy to increase gas pressure and discharge gas. Centrifugal induced draft fans are 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 furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The centrifugal draught fan generally comprises a machine shell, a main shaft, an impeller, a bearing transmission machine and a motor, dust is more in the general air of the application place of the centrifugal draught fan, the impeller rotates to enable the dust to enter the draught fan, the dust can be accumulated in the draught fan shell and on blades, the power consumption of the draught fan is increased, when the dust in the draught fan is more, the draught fan needs to be detached for cleaning or maintenance, and the labor intensity of maintenance cost and workers is increased.

Disclosure of Invention

For overcoming the above-mentioned problem that exists among the prior art, the utility model provides a centrifugation draught fan can reduce the draught fan and dismantle clearance maintenance number of times, reduces cost of maintenance, reduces workman's intensity of labour.

The utility model discloses a realize through following technical scheme:

a centrifugal draught fan comprises a base, wherein the top of the base is connected with a shell, the front side of the shell is provided with an air inlet, and the top of the shell is provided with an air outlet; a rotating support frame connected to the base is arranged on the rear side of the shell, a main shaft is rotatably connected above the rotating support frame, an impeller is arranged in the shell, and the impeller is coaxially connected with the main shaft; still be connected with the motor on the base top surface, the motor passes through the belt drive group and connects in the main shaft, the air intake front side is connected with the flange, the flange front side is connected with the filter, the filter includes preceding clamp plate, back clamp plate and the filter sponge between preceding clamp plate and the back clamp plate.

Preferably, the inner side surface of the shell is connected with silencing cotton.

Preferably, a rubber gasket is connected between the bottom of the motor and the base.

Preferably, the four corners of the top surface of the base are connected with hanging rings.

Preferably, the bottom of the base is connected with a caster.

Preferably, threaded rods are connected to the four corners of the base in a threaded manner, and supporting legs are connected to the bottoms of the threaded rods.

The utility model has the advantages that:

1. the front side of the air inlet is connected with a flange, the front side of the flange is connected with a filter plate, the filter plate comprises a front pressing plate, a rear pressing plate and a filter sponge between the front pressing plate and the rear pressing plate, and air carrying a large amount of dust is filtered by the filter sponge before being sucked into the draught fan, so that most of dust is removed, the amount of dust entering the draught fan is greatly reduced, the times of disassembling, cleaning and maintaining the draught fan are reduced, the maintaining cost is reduced, and the labor intensity of workers is reduced; the filtering sponge is fixed by the front pressing plate and the rear pressing plate and then connected with the front of the air inlet of the casing through the flange, and the filtering sponge is more convenient to install, disassemble and replace.

2. Be connected with the amortization cotton on the casing medial surface, the amortization cotton can eliminate the partial noise that draught fan work produced, reduces noise pollution in the workshop.

3. Be connected with rubber gasket between motor bottom and the base, rubber gasket can cushion the vibrations that the motor during operation produced, improves the life of motor, reduces the noise that vibrations impact produced simultaneously.

4. And lifting rings are connected at four corners of the top surface of the base, so that the draught fan can be conveniently lifted and transferred by a crown block.

5. The base bottom is connected with the truckle, the removal of the draught fan of being convenient for, and mobility is better.

6. Threaded connection has the threaded rod in base four corners position, and the threaded rod bottom is connected with the supporting legs, makes the supporting legs be less than the truckle bottom through rotating the threaded rod, and the draught fan of being convenient for removes fixed after.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic sectional view at a-a in fig. 1.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic perspective view of the present invention.

Fig. 5 is a schematic perspective view of the present invention.

Fig. 6 is a schematic view of the filter plate structure of the present invention.

In the figure, 1-a base, 2-a machine shell, 21-an air inlet, 22-an air outlet, 23-a fixed frame, 24-silencing cotton, 3-a main shaft, 31-a rotating support frame, 32-a bearing seat, 33-a driven belt wheel, 4-a motor, 41-a driving belt wheel, 42-a rubber gasket, 5-an impeller, 6-a filter plate, 61-a front pressure plate, 62-a rear pressure plate, 63-a filtering sponge, 64-a flange plate, 7-a caster wheel, 8-a threaded rod, 81-a supporting leg and 9-a hanging ring.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 6, the utility model relates to a centrifugal draught fan, including base 1, base 1 top is connected with casing 2, and is concrete, and casing 2 passes through mount 23 to be fixed on base 1, and casing 2 front side is opened and is equipped with air intake 21, and air outlet 22 has been seted up at casing 2 top, as shown in fig. 4.

Casing 2 rear side is equipped with the rotation support frame 31 of connection on base 1, and it has bearing frame 32 to rotate support frame 31 top through the screw fixation, and rotatable coupling has main shaft 3 on the bearing frame 32, rotates support frame 31 and is equipped with two around altogether, and main shaft 3 rotates through two bearing frames 32 and supports. An impeller 5 is arranged in the casing 2, the impeller 5 is coaxially and fixedly connected with the front end of the main shaft 3, and the impeller 5 is supported by the main shaft 3. Still be connected with motor 4 on the 1 top surface of base, motor 4 is organized through belt drive and is connected in main shaft 3, and is concrete, 3 rear end fixedly connected with driven pulleys 33 of main shaft, the output shaft end of motor 4 is connected with driving pulley 41, be connected through the V belt between driving pulley 41 and the driven pulleys 33, organize through motor 4 and belt drive and will rotate the transmission and give main shaft 3, main shaft 3 drives impeller 5 and rotates, utilize high-speed rotatory impeller with gaseous acceleration, then slow down, change the flow direction, make the kinetic energy convert potential energy (pressure).

The air intake 21 front side passes through bolt fixedly connected with flange 64, and the flange 64 front side is connected with filter 6, and filter 6 includes preceding clamp plate 61, back clamp plate 62 and the preceding clamp plate 61 and the back clamp plate 62 between filter sponge 63, and filter sponge 63 is pressed from both sides and is fixed between back clamp plate 62 and preceding clamp plate 61, all has seted up the mounting hole that corresponds to flange 64 on back clamp plate 62 and the preceding clamp plate 61, and filter 6 passes through the bolt fastening on flange 64. When the draught fan works, air carrying a large amount of dust is filtered by the filtering sponge 63 before being sucked into the draught fan, most of dust is removed, clean air filtered through the filtering holes of the filtering sponge 63 enters the draught fan, the dust amount entering the draught fan is greatly reduced, the times of disassembling, cleaning and maintaining the draught fan are reduced, the maintaining cost is reduced, and the labor intensity of workers is reduced; the filtering sponge 63 is fixed by the front pressing plate 61 and the rear pressing plate 62 and then connected to the front of the air inlet 21 of the machine shell 2 by the flange 64, so that the installation, the disassembly and the replacement are more convenient.

Be connected with amortization cotton 24 on the 2 medial surfaces of casing, the amortization cotton can eliminate the partial noise that draught fan work produced, reduces noise pollution in the workshop.

Be connected with rubber gasket 42 between motor 4 bottom and the base 1, rubber gasket 42 can cushion the vibrations that motor 4 during operation produced, improves the life of motor, reduces the noise that vibrations impact produced between motor 4 and the base 1 simultaneously.

The handling of draught fan among the prior art is generally realized through special gallows or wooden tray, and the cost is higher, and the handling is inconvenient, and in this embodiment, base 1 top surface four corners position is connected with rings 9, is convenient for carry out handling and transfer to the draught fan through the overhead traveling crane.

The base 1 bottom is connected with truckle 7, and the removal of the draught fan of being convenient for can promote the draught fan through 7 workman directness of truckle, and mobility is better.

Threaded rods 8 are connected to the four corners of the base 1 through threads, and supporting legs 81 are connected to the bottoms of the threaded rods 8. Make supporting legs 81 bottom surface be less than the truckle 7 bottom through rotating threaded rod 8, the draught fan of being convenient for remove after fixed, support whole draught fan through supporting legs 81.

In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present invention, but do not require the present invention to be constructed or operated in a specific orientation, and therefore, cannot be construed as limiting the present invention. The terms "connected" and "connected" in the present invention are to be understood in a broad sense, and may be connected or detachably connected, for example; the terms may be directly connected or indirectly connected through intermediate components, and specific meanings of the terms may be understood as specific conditions by those skilled in the art.

The foregoing is a preferred embodiment of the present invention, and the description of the specific embodiments is only for better understanding of the idea of the present invention. To those skilled in the art, many modifications and equivalents may be made in accordance with the principles of the present invention and are deemed to fall within the scope of the invention.

Claims

1. A centrifugal draught fan comprises a base (1), wherein the top of the base (1) is connected with a shell (2), an air inlet (21) is formed in the front side of the shell (2), and an air outlet (22) is formed in the top of the shell (2); a rotating support frame (31) connected to the base (1) is arranged on the rear side of the casing (2), a main shaft (3) is rotatably connected above the rotating support frame (31), an impeller (5) is arranged in the casing (2), and the impeller (5) is coaxially connected with the main shaft (3); still be connected with motor (4) on base (1) top surface, motor (4) are connected in main shaft (3), its characterized in that through belt drive group: air intake (21) front side is connected with flange (64), flange (64) front side is connected with filter (6), filter (6) are including preceding clamp plate (61), back clamp plate (62) and preceding clamp plate (61) and back clamp plate (62) between filter sponge (63).

2. A centrifugal induced draft fan according to claim 1, wherein: the inner side surface of the shell (2) is connected with silencing cotton (24).

3. A centrifugal induced draft fan according to claim 1 or 2, wherein: and a rubber gasket (42) is connected between the bottom of the motor (4) and the base (1).

4. A centrifugal induced draft fan according to claim 3, wherein: and hanging rings (9) are connected at four corners of the top surface of the base (1).

5. A centrifugal induced draft fan according to claim 4, wherein: the bottom of the base (1) is connected with a caster (7).

6. A centrifugal induced draft fan according to claim 5, wherein: threaded rods (8) are connected to four corners of the base (1) through threads, and supporting legs (81) are connected to the bottoms of the threaded rods (8).