Glass fiber reinforced plastic fan capable of reducing noise

Abstract

A glass fiber reinforced plastic draught fan capable of reducing noise comprises a volute type machine shell, a hub arranged in a rotating mode is arranged in the center of the machine shell, an impeller is fixedly arranged on the hub, an air inlet perpendicular to the machine shell is formed in the center of the machine shell, an air outlet is formed in one side of the machine shell, and the glass fiber reinforced plastic draught fan further comprises a motor providing power for the impeller. The motor drives the hub so as to drive the impeller to rotate, a sound insulation cover is arranged on the periphery of the machine shell and provided with vacancies matched with the air inlet and the air outlet, glass wool used for reducing noise is arranged on the inner wall of the sound insulation cover, and the motor is provided with silencing holes formed in the circumference.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment equipment technical field especially, relates to a glass -fibre reinforced plastic fan of reducing noise. BACKGROUND

[0002] Fan is a kind of mechanical equipment that relies on input mechanical energy, improves gas pressure and sends gas, it is a driven fluid machine, fan is often used in waste gas treatment, however, fan will produce a large amount of noise in waste gas treatment, fan in prior art all exist noise, cause harm to human health and other problems. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problems of prior art, provides a glass -fibre reinforced plastic fan that reduces noise.

[0004] The utility model employs the technical scheme that a kind of glass -fibre reinforced plastic fan that reduces noise, including volute casing, the center of the casing is equipped with the hub of rotation setting, the hub is fixed with impeller, the center of the casing is equipped with the air inlet perpendicular to casing, one side of the casing is equipped with air outlet, further including the motor for providing power for impeller, the motor drives hub to drive impeller rotation, the periphery of the casing is equipped with soundproof cover, the soundproof cover is equipped with the clearance that is adapted to air inlet and air outlet, the inner wall of the soundproof cover is equipped with glass wool for reducing noise, the motor is equipped with circumferentially arranged sound hole.

[0005] The utility model further includes a driven wheel that is fixedly connected with the hub, the motor drives a driving wheel, and the driving wheel and the driven wheel are connected by a transmission belt.

[0006] The utility model discloses the casing is equipped with the explosion-proof layer of the explosion-proof material, and the explosion-proof material is polytetrafluoroethylene or polypropylene.

[0007] The utility model discloses the number of impeller is at least three, and the impeller is circumferentially fixed and arranged at the periphery of the hub, and the impeller includes the bending part in the direction of narrowing impeller inner diameter, the opposite side of the bending part is equipped with the toothed portion with the tooth, and the bending part and the toothed portion away from the hub are connected by an arc portion.

[0008] The utility model discloses the lower portion of soundproof cover is equipped with base, and the base includes upper bottom plate and lower bottom plate, and the spring is equipped between the upper bottom plate and the lower bottom plate, and the soundproof cover is fixedly connected with the upper bottom plate, and the lower bottom plate is fixedly connected with the ground by bolt.

[0009] The utility model discloses the material of casing and impeller is all glass -fibre reinforced plastic.

[0010] Compared with prior art, the utility model has the beneficial effects that:

[0011] 1. Compared with the existing technology where fiberglass fans are noisy and affect human health, this utility model reduces noise and minimizes noise hazards by having a soundproof cover with glass wool on the inner wall and a sound-absorbing hole in the motor.

[0012] 2. Compared with impellers in the prior art that do not have teeth, this utility model increases the strength and rigidity of the impeller and extends its service life by providing a toothed portion. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0014] Fig. 2 This is a schematic diagram of the impeller described in this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figs. 1-2 As shown in the figure, the fiberglass fan for reducing noise described in this embodiment includes a volute-type casing 1. A rotating hub 11 is located at the center of the casing 1, and an impeller 2 is fixedly mounted on the hub 11. An air inlet 31 perpendicular to the casing 1 is located at the center of the casing 1, and an air outlet 32 ​​is located on one side of the casing 1. The fan also includes a motor 4 that provides power to the impeller 2. The motor 4 drives the hub 11, thereby rotating the impeller 2. A soundproof cover 5 is provided around the casing 1. The soundproof cover 5 has openings that fit the air inlet 31 and the air outlet 32. The inner wall of the soundproof cover 5 is lined with glass wool 51 for noise reduction. The motor 4 has circumferentially arranged sound-absorbing holes 41. In this embodiment, the soundproof cover 5 reduces noise, the glass wool 51 on the inner wall of the soundproof cover 5 further reduces noise, and the sound-absorbing holes 41 on the motor 4 also reduce noise, thus reducing overall noise pollution.

[0017] This embodiment also includes a driven wheel 21 fixedly connected to the hub 11. The motor 4 drives a driving wheel 42, and the driving wheel 42 and the driven wheel 21 are connected by a transmission belt 7. The motor 4 drives the driving wheel 42 to rotate, and the driving wheel 42 drives the driven wheel 21 to rotate through the transmission belt 7, thereby driving the hub 11 to finally drive the impeller 2 to rotate.

[0018] In this embodiment, the housing 1 is provided with an explosion-proof layer 12 composed of explosion-proof material, which is polytetrafluoroethylene or polypropylene; the function of the explosion-proof layer 12 is to prevent gas from entering the housing 1 and causing an explosion, thus ensuring the safety of the staff.

[0019] The number of impellers 2 is at least three, which are circumferentially fixed on the periphery of the hub 11, and the impellers 2 include a curved portion 22 directed to the inner diameter of the impeller 2, and the opposite side of the curved portion 22 is provided with a toothed portion 23 with a tooth pattern, and the curved portion 22 and the toothed portion 23 away from the hub 11 are connected by an arc portion 24; the toothed portion 23 can increase the strength and rigidity of the impeller 2, and prolong the service life of the impeller.

[0020] The lower part of the soundproof cover 5 is provided with a base 6, which includes an upper bottom plate 61 and a lower bottom plate 62, and a spring 63 is arranged between the upper bottom plate 61 and the lower bottom plate 62, the soundproof cover 5 is fixedly connected with the upper bottom plate 61, and the lower bottom plate 62 is fixedly connected with the ground through a bolt 64; the spring 63 can buffer the vibration during the operation of the device.

[0021] The materials of the casing 1 and the impeller 2 are both glass steel, which has the characteristics of corrosion resistance, thereby prolonging the service life.

Claims

1. A fiberglass fan for reducing noise, characterized in that, The device includes a volute-type housing (1), with a rotating hub (11) at the center of the housing (1), an impeller (2) fixedly mounted on the hub (11), an air inlet (31) perpendicular to the housing (1) at the center of the housing (1), an air outlet (32) on one side of the housing (1), and a motor (4) that provides power to the impeller (2). The motor (4) drives the hub (11) to rotate the impeller (2). A soundproof cover (5) is provided around the housing (1), with a space that matches the air inlet (31) and the air outlet (32). The inner wall of the soundproof cover (5) is provided with glass wool (51) for noise reduction. The motor (4) is provided with circumferentially arranged sound-absorbing holes (41).

2. The fiberglass fan for reducing noise according to claim 1, characterized in that, It also includes a driven wheel (21) fixedly connected to the hub (11), and the motor (4) drives a driving wheel (42). The driving wheel (42) and the driven wheel (21) are connected by a transmission belt (7).

3. A fiberglass fan for reducing noise according to claim 1, characterized in that, The housing (1) is provided with an explosion-proof layer (12) composed of explosion-proof material, which is polytetrafluoroethylene or polypropylene.

4. A fiberglass fan for reducing noise according to claim 1, characterized in that, The number of impellers (2) is at least three. The impellers (2) are fixedly arranged in a circle around the hub (11). The impellers (2) include a curved part (22) that is directed toward reducing the inner diameter of the impeller (2). A toothed part (23) with teeth is provided opposite to the curved part (22). The curved part (22) and the toothed part (23) on the side away from the hub (11) are connected by an arc part (24).

5. A fiberglass fan for reducing noise according to claim 1, characterized in that, The soundproof cover (5) is provided with a base (6) below it. The base (6) includes an upper base plate (61) and a lower base plate (62). A spring (63) is provided between the upper base plate (61) and the lower base plate (62). The soundproof cover (5) is fixedly connected to the upper base plate (61), and the lower base plate (62) is fixedly connected to the ground by bolts (64).

6. A fiberglass fan for reducing noise according to claim 1, characterized in that, The casing (1) and impeller (2) are both made of fiberglass.

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