CN209743247U - Anticorrosive high temperature resistant low noise environmental protection centrifugal fan - Google Patents

Abstract

The utility model discloses an anticorrosive high-temperature resistant low-noise environment-friendly centrifugal fan, which comprises a base and a stabilizing support, wherein the upper end of the base is provided with the stabilizing support, the base is connected with the stabilizing support through welding, the upper end of the stabilizing support is provided with a motor, the right end of the motor is provided with a volute, and the right end of the volute is provided with an air outlet, the utility model discloses an anticorrosive high-temperature resistant low-noise environment-friendly centrifugal fan, through arranging a heat insulation seat at the joint of a motor shaft and the volute, the axial distance between the motor and the volute can be lengthened, thereby the influence of higher temperature generated by the volute on the motor can be isolated, the torque of an impeller is lengthened, the fan can work for a long time at the temperature below two hundred degrees in the fan, and simultaneously, the inside of the joint of the volute and an air inlet is provided with silencing cotton, thereby, thereby achieving a high temperature resistant and low noise operating environment.

Description

An anti-corrosion, high temperature, low noise and environmental protection centrifugal fan

technical field

The utility model belongs to the technical field related to a centrifugal fan, in particular to an anti-corrosion, high-temperature, low-noise and environmental protection centrifugal fan.

Background technique

The centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induction of boilers and industrial furnaces, cooling and cooling of air conditioning equipment and household appliances. Ventilation, grain drying and sorting, wind tunnel wind source and hovercraft inflation and propulsion, etc.

The existing centrifugal fan technology has the following problems: when the existing centrifugal fan is working, due to the long working hours, the temperature will continue to rise during the work, and the traditional centrifugal fan is not resistant to high temperature, so the working efficiency of the centrifugal fan It will be reduced, and it will cause a lot of noise when working.

Utility model content

The purpose of this utility model is to provide an anti-corrosion, high-temperature, low-noise and environmental protection centrifugal fan, so as to solve the problem that the existing centrifugal fan proposed in the above-mentioned background technology is not resistant to high temperature and has a lot of noise during operation.

In order to achieve the above purpose, the utility model provides the following technical solutions: an anti-corrosion, high-temperature, low-noise and environmental protection centrifugal fan, including a base and a stable support, the upper end of the base is provided with a stable support, and the base and the stable support are connected by welding. The upper end of the stable bracket is provided with a motor, the right end of the motor is provided with a volute, the right end of the volute is provided with an air outlet, the lower end of the air outlet is provided with an air outlet duct, and the inner right end of the volute An air inlet is provided, adjusting screws are arranged at equal intervals around the air inlet, and the motor is electrically connected to a power switch.

Preferably, the composition of the motor includes a bottom frame, an end cover, a heat dissipation strip, a motor shaft and a heat insulation seat, the right end of the end cover is provided with a heat dissipation strip, and the lower end of the heat dissipation strip is provided with a chassis, the The right end of the heat dissipation stripe is provided with a motor shaft, and the right end of the motor shaft is provided with a heat insulating seat, and the motor is fixedly connected with the volute through the heat insulating seat.

Preferably, the composition of the volute includes an air outlet, sound-absorbing cotton, a housing and a diffuser, the right end of the air outlet is provided with a housing, and the interior of the housing is provided with a diffuser, so The outer surface end of the casing is provided with sound-absorbing cotton, and the volute is fixedly connected with the motor through the casing by bolts.

Preferably, the composition of the air inlet includes a fixed shaft, a fixed seat, a connecting plate, a fixing hole and an impeller, the inside of the connecting plate is provided with an impeller, and a circumference of the connecting plate is provided with a plurality of fixing holes, so The inside of the impeller is provided with a fixed seat, and the outer periphery of the fixed seat is provided with a fixed shaft, and the air inlet is fixedly connected with the volute through a connecting plate.

Preferably, the impeller is a hollow cylindrical structure, and the impeller is made of high-quality galvanized steel plate material, and a plurality of arc-shaped blades are arranged inside the impeller.

Preferably, the fixed shaft rod is a round rod-shaped structure with a radian, and there are three fixed shaft rods in total, and the three fixed shaft rods are symmetrically arranged at equal intervals around the fixed seat and fixed by bolts connect.

Preferably, the air inlet is a disc-shaped structure, the cross-sectional diameter of the air inlet is 225 mm, and the air inlet is fixedly connected to the volute through a sealing flange.

Preferably, the air outlet is a rectangular hollow structure, and the size of the air outlet is 240 mm in length and 165 mm in width.

Compared with the prior art, the utility model provides an anti-corrosion, high-temperature, low-noise, and environmental protection centrifugal fan, which has the following beneficial effects: the utility model provides an anti-corrosion, high-temperature, low-noise, and environmental protection centrifugal fan through the motor shaft and the volute There is a heat insulation seat at the connection, which can lengthen the axial distance between the motor and the volute, overcome the problem of increased torque after the motor shaft is lengthened, and thus isolate the influence of the high temperature generated by the volute on the motor , and the torque of the impeller is lengthened, it can work for a long time when the temperature in the fan is below 200 degrees, and at the same time, there is a sound-absorbing cotton inside the connection between the volute and the air inlet, so that the sound-absorbing cotton can absorb the noise generated during work, thus It can achieve high temperature resistance and low noise operating environment.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation of the utility model. In the accompanying drawings:

Fig. 1 is the structural representation of the centrifugal fan that the utility model proposes;

Fig. 2 is the electric motor structure schematic diagram that the utility model proposes;

Fig. 3 is the volute structure schematic diagram that the utility model proposes;

Fig. 4 is the schematic diagram of the structure of the air inlet proposed by the utility model;

In the figure: 1. Base; 2. Stabilizing bracket; 3. Motor; 31. Underframe; 32. End cover; 33. Heat dissipation stripes; 34. Motor shaft; 35. Heat insulation seat; 4. Volute; 41. Outlet Air hole; 42, silencer cotton; 43, shell; 44, diffuser; 5, air outlet; 6, air outlet pipe; 7, air inlet; 71, fixed shaft; 72, fixed seat; 73, connecting plate ; 74, fixing hole; 75, impeller; 8, adjusting screw.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: an anti-corrosion, high-temperature, low-noise and environmental protection centrifugal fan, including a base 1 and a stable support 2, the upper end of the base 1 is provided with a stable support 2, the base 1 and the stable support 2 Connected by welding, the upper end of the stable bracket 2 is provided with a motor 3, and the right end of the motor 3 is provided with a volute 4, the volute 4 is a volute structure, so that the wind direction can be changed, and the right end of the volute 4 is provided with an air outlet 5 , the lower end of the air outlet 5 is provided with an air outlet duct 6, the inner right end of the volute 4 is provided with an air inlet 7, and a week of the air inlet 7 is equidistantly provided with adjusting screws 8, and the motor 3 is electrically connected to the power switch.

Further, the composition of the motor 3 includes a chassis 31, an end cover 32, a heat dissipation stripe 33, a motor shaft 34 and a heat insulating seat 35, the right end of the end cover 32 is provided with a heat dissipation stripe 33, and the lower end of the heat dissipation stripe 33 is provided with a chassis 31 , the right end of the heat dissipation stripes 33 is provided with a motor shaft 34, and the right end of the motor shaft 34 is provided with a heat insulating seat 35, so that the influence of the higher temperature generated by the volute 4 on the motor 3 can be isolated, and the motor 3 is connected to the motor 3 through the heat insulating seat 35. The volute 4 is fixedly connected.

Further, the composition of the volute 4 includes an air outlet 41, a sound-absorbing cotton 42, a housing 43 and a diffuser 44, the right end of the air outlet 41 is provided with a housing 43, and the interior of the housing 43 is provided with a diffuser 44 The outer surface end of the casing 43 is provided with a sound-absorbing cotton 42, which can absorb noise, and the volute 4 is fixedly connected with the motor 3 through the casing 43 by bolts.

Further, the composition of the air inlet 7 includes a fixed shaft rod 71, a fixed seat 72, a connecting plate 73, a fixing hole 74 and an impeller 75, the inside of the connecting plate 73 is provided with an impeller 75, and the circumference of the connecting plate 73 is provided with a plurality of fixing holes 74, so that it can be connected more stably through the fixing hole 74, the inside of the impeller 75 is provided with a fixed seat 72, and the outer circumference of the fixed seat 72 is provided with a fixed shaft 71, and the air inlet 7 is fixedly connected with the volute 4 through the connecting plate 73 .

Further, the impeller 75 is a hollow cylindrical structure inside, and the impeller 75 is made of high-quality galvanized steel plate material, so that it can have better toughness. The inside of the impeller 75 is provided with multiple arc-shaped blades.

Further, the fixed shaft rod 71 is a round rod-shaped structure with a radian, and there are three fixed shaft rods 71 in total, so that the connection can be made more stable. One week and connected by bolts.

Further, the air inlet 7 is a disc-shaped structure, the cross-sectional diameter of the air inlet 7 is 225 mm, and the air inlet 7 and the volute 4 are fixedly connected by a sealing flange, so that the connection can be made more stable.

Further, the air outlet 5 is a rectangular internal hollow structure, so that the air outlet can be better for working and exhausting. The size of the air outlet 5 is 240 mm in length and 165 mm in width. .

The working principle and usage process of the utility model: after the utility model is installed, when the centrifugal fan is to be used, the gas will first enter the interior of the volute 4 from the air inlet 7, and then the gas will axially enter the interior of the impeller 75 , The centrifugal fan is based on the principle of converting kinetic energy into potential energy, using the high-speed rotating impeller 75 to accelerate the gas, then decelerate it, and then change the flow direction to convert kinetic energy into potential energy. When the gas flows through the impeller 75, it changes into a radial direction, and then enters the diffuser 44. The model of the diffuser 44 is JCQ200121. In the diffuser 44, the gas changes the flow direction and the cross-sectional area of the pipe increases to decelerate the gas flow. The deceleration effect converts kinetic energy into pressure energy, and a heat insulating seat 35 is provided at the connection between the motor shaft 34 and the volute 4, so that the axial distance between the motor 3 and the volute 4 can be elongated to overcome the motor shaft 34 The problem of increased torque after lengthening can isolate the influence of the higher temperature generated by the volute 4 on the motor 3. The model of the motor 3 is Y355 motor with F-class insulation, the rated voltage is 380V, and the rated frequency is 50Hz. The inside of the connection between the volute 4 and the air inlet 7 is provided with a sound-absorbing cotton 42, which can make the sound-absorbing cotton 42 absorb the noise generated during work.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (8)

1. the utility model provides an anticorrosive high temperature resistant low noise environmental protection centrifugal fan, includes base (1) and stabilizing support (2), its characterized in that: the upper end of base (1) is provided with stabilizing support (2), base (1) passes through welded connection with stabilizing support (2), stabilizing support's (2) upper end is provided with motor (3), the right-hand member of motor (3) is provided with spiral case (4), the right-hand member of spiral case (4) is provided with air outlet (5), the lower extreme of air outlet (5) is provided with air-out pipeline (6), the inside right-hand member of spiral case (4) is provided with air intake (7), the equidistant adjusting screw (8) that is provided with of a week of air intake (7), motor (3) and switch electric connection.

2. the corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 1, characterized in that: the motor is characterized in that the motor (3) comprises an underframe (31), an end cover (32), heat dissipation stripes (33), a motor shaft (34) and a heat insulation seat (35), the heat dissipation stripes (33) are arranged at the right end of the end cover (32), the underframe (31) is arranged at the lower end of the heat dissipation stripes (33), the motor shaft (34) is arranged at the right end of the heat dissipation stripes (33), the heat insulation seat (35) is arranged at the right end of the motor shaft (34), and the motor (3) is fixedly connected with the volute (4) through the heat insulation seat (35).

3. The corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 1, characterized in that: the utility model discloses a fan casing, including the constitution of spiral case (4) exhaust vent (41), amortization cotton (42), casing (43) and diffuser (44), the right-hand member of exhaust vent (41) is provided with casing (43), the inside of casing (43) is provided with diffuser (44), the outside table end of casing (43) is provided with amortization cotton (42), spiral case (4) pass through casing (43) and motor (3) bolt fixed connection.

4. The corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 1, characterized in that: the air inlet (7) comprises a fixed shaft rod (71), a fixed seat (72), a connecting plate (73), fixed holes (74) and an impeller (75), the impeller (75) is arranged inside the connecting plate (73), a plurality of fixed holes (74) are formed in the periphery of the connecting plate (73), the fixed seat (72) is arranged inside the impeller (75), the fixed shaft rod (71) is arranged on the periphery of the outside of the fixed seat (72), and the air inlet (7) is fixedly connected with the volute (4) through the connecting plate (73).

5. The corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 4, characterized in that: the impeller (75) is of a hollow cylindrical structure, the impeller (75) is made of high-quality galvanized steel plate materials, and a plurality of arc-shaped blades are arranged inside the impeller (75).

6. The corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 4, characterized in that: the fixing shaft rods (71) are round rod-shaped structures with radian, the number of the fixing shaft rods (71) is three, and the three fixing shaft rods (71) are symmetrically arranged on the periphery of the fixing seat (72) at equal intervals and are fixedly connected through bolts.

7. the corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 1, characterized in that: the air inlet (7) is of a disc-shaped structure, the diameter of the cross section of the air inlet (7) is two hundred twenty-five millimeters, and the air inlet (7) is fixedly connected with the volute (4) through a sealing flange.

8. The corrosion-resistant, high-temperature-resistant, low-noise and environment-friendly centrifugal fan according to claim 1, characterized in that: the air outlet (5) is of a rectangular hollow structure, and the size of the air outlet (5) is two hundred forty millimeters in length and one hundred sixty-five millimeters in width.