Centrifugal fan easy to maintain

Abstract

The utility model discloses an easy-to-maintain centrifugal fan which comprises a base, a volute is arranged on the base, an impeller is rotatably arranged in the volute, an air inlet is formed in the side face of the volute, an air outlet is formed in the end portion of the volute, a sealing plate is arranged in the air outlet in an up-and-down displacement mode, and the impeller is arranged on the base. The sealing plate can open or close the air outlet, eight drainage valves are arranged at the lower end of the volute, and the upper end of the volute communicates with a water spraying head. The problems that the interior of a volute and an impeller of an existing centrifugal fan are not easy to clean and maintain, and the quality of conveyed gas is affected if the centrifugal fan is not cleaned for a long time are solved.

Description

Technical Field

[0001] This utility model relates to fans, specifically to an easy-to-maintain centrifugal fan. Background Technology

[0002] A centrifugal fan is a machine that uses the principle of centrifugal force to transport gas. It is driven by a motor to rotate an impeller. Gas enters the fan from the inlet, is accelerated by the impeller and flows outward along the radial direction of the impeller, and is then guided through the casing and discharged from the outlet. For example, Chinese patent CN201820969441.6 provides a centrifugal fan, including: a base, a volute, a motor, and an impeller driven by the motor. A horizontal motor is mounted on the base, and the motor shaft extends from the axis of the volute into the vertically placed volute. An impeller bearing with an impeller is installed at the end of the motor shaft inside the volute. A circumferential circulation channel is formed inside the volute, and a flared air inlet is provided on the other axial end of the impeller bearing. The base is a tabletop base, with the horizontal motor mounted on the upper plane and the vertically placed volute fixedly mounted on the side, forming a single unit. The outlet of the circulation channel formed inside the volute faces upward and a connecting flange is provided at the outlet end. Centrifugal fans like the one described above tend to accumulate a lot of dust inside the volute and on the impeller after prolonged use, making cleaning tedious and affecting the quality of the transported gas if not cleaned for a long time. Utility Model Content

[0003] The purpose of this invention is to provide an easy-to-maintain centrifugal fan that solves the problem that existing centrifugal fans are difficult to clean and maintain, and that long-term neglect of cleaning affects the quality of the transported gas.

[0004] To achieve the above objectives, this utility model provides an easy-to-maintain centrifugal fan. The easy-to-maintain centrifugal fan includes a base, a volute on the base, an impeller rotatably disposed inside the volute, an air inlet formed on the side of the volute, an air outlet formed at the end of the volute, a sealing plate disposed inside the air outlet that can be moved vertically, the sealing plate being able to open or close the air outlet, a drain valve disposed at the lower end of the volute, and a water spray head connected to the upper end of the volute.

[0005] Preferably, a water pipe fixing bracket is provided on the base, and the water spray head is connected to a water inlet pipe through a valve, and the water inlet pipe is fixed on the water pipe fixing bracket.

[0006] Preferably, a mesh cover is detachably provided on the air inlet.

[0007] Preferably, a slide rail plate is provided in the volute near the air outlet, and a long groove is formed on the slide rail plate in the vertical direction. A slider is provided at the upper end of the sealing plate, and the slider is at least partially slidably disposed in the long groove.

[0008] Preferably, the slider is provided with a screw, which passes through the long groove and is engaged with a locking nut.

[0009] Preferably, the base is provided with a pulley housing, and a first pulley and a second pulley connected by a belt are respectively provided in the pulley housing. A motor is provided on the base, the motor is connected to the first pulley, and the second pulley is connected to the impeller through a rotating shaft.

[0010] Preferably, a bearing housing is provided on the base, and the rotating shaft is at least partially rotatably disposed within the bearing housing.

[0011] Beneficial Effects: This utility model provides an easy-to-maintain centrifugal fan. The easy-to-maintain centrifugal fan includes a base, a volute on the base, an impeller rotatably mounted inside the volute, an air inlet on the side of the volute, and an air outlet at the end of the volute. A sealing plate is vertically movable inside the air outlet, which can open or close the air outlet. A drain valve is provided at the lower end of the volute, and a water spray head is connected to the upper end of the volute. An air outlet duct can be connected to the air outlet. When cleaning and maintenance of the volute is required, the air outlet is covered by the sealing plate, and the rotating impeller and the inside of the volute are rinsed by the water spray head. The rinsing water is discharged through the drain valve at the bottom. During the rinsing process, sewage is prevented from entering the air outlet duct. The centrifugal fan provided by this utility model is easy to clean and maintain internally, ensuring the cleanliness of the volute and facilitating the delivery of clean gas to meet usage requirements.

[0012] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a first-view structural diagram of the easy-to-maintain centrifugal fan provided by this utility model;

[0015] Figure 2 This is a second-view structural diagram of the easy-to-maintain centrifugal fan provided by this utility model;

[0016] Figure 3This is a side view of the easy-to-maintain centrifugal fan provided by this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 1-Volume; 2-Impeller; 3-Air outlet; 4-Sealing plate; 5-Slider; 6-Slide rail plate; 7-Base; 8-Motor; 9-Pulley housing; 10-First pulley; 11-Second pulley; 12-Shaft; 13-Bearing seat; 14-Water pipe fixing bracket; 15-Water inlet pipe; 16-Valve; 17-Spray head. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] like Figure 1-3 As shown: This utility model provides an easy-to-maintain centrifugal fan. The easy-to-maintain centrifugal fan includes a base 7, on which a volute 1 is disposed. An impeller 2 is rotatably disposed inside the volute 1. An air inlet is formed on the side of the volute 1, and an air outlet 3 is formed at the end of the volute 1. A sealing plate 4 is disposed inside the air outlet 3, which can be moved vertically. The sealing plate 4 can open or close the air outlet 3. A drain valve 8 is provided at the lower end of the volute 1, and a water spray head 17 is connected to the upper end of the volute 1. An air outlet duct can be connected to the air outlet. When it is necessary to clean and maintain the inside of the volute, the air outlet is covered by the sealing plate, and the rotating impeller and the inside of the volute are rinsed by the water spray head. The rinsing water is discharged through the drain valve at the bottom. During the rinsing process, sewage can be prevented from entering the air outlet duct. The centrifugal fan provided by this utility model is easy to clean and maintain internally, ensuring the cleanliness of the inside of the volute, facilitating the delivery of clean gas, and meeting usage requirements.

[0021] In a preferred embodiment of this utility model, in order to facilitate the control of water inlet, a water pipe fixing bracket 14 is provided on the base 7, and the water nozzle 17 is connected to a water inlet pipe 15 through a valve 16, and the water inlet pipe 15 is fixed on the water pipe fixing bracket 14.

[0022] In a preferred embodiment of this utility model, a mesh cover is detachably provided on the air inlet to prevent foreign objects from entering the volute.

[0023] In a preferred embodiment of this utility model, in order to limit the vertical displacement of the sealing plate, a slide rail plate 6 is provided in the volute 1 near the air outlet 3. A long groove along the vertical direction is formed on the slide rail plate 6. A slider 5 is provided at the upper end of the sealing plate 4. The slider 5 is at least partially slidably disposed in the long groove.

[0024] In a preferred embodiment of this utility model, in order to lock the lifted sealing plate, the slider 5 is provided with a screw, the screw passes through the long groove and is engaged with a locking nut.

[0025] In a preferred embodiment of this utility model, in order to drive the impeller to rotate, a pulley housing 9 is provided on the base 7, and a first pulley 10 and a second pulley 11 connected by a belt are respectively provided in the pulley housing 9. A motor 8 is provided on the base 7, the motor 8 is connected to the first pulley 10, and the second pulley 11 is connected to the impeller 2 through a rotating shaft 12.

[0026] In a preferred embodiment of the present invention, in order to support the rotating shaft and make its rotation smoother, a bearing seat 13 is provided on the base 7, and the rotating shaft 12 is at least partially rotatably disposed in the bearing seat 13.

[0027] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0029] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An easy-to-maintain centrifugal fan, characterized in that, The easy-maintain centrifugal fan includes a base (7), on which a volute (1) is provided. An impeller (2) is rotatably provided inside the volute (1). An air inlet is formed on the side of the volute (1), and an air outlet (3) is formed at the end of the volute (1). A sealing plate (4) is provided inside the air outlet (3) and can be moved up and down. The sealing plate (4) can open or close the air outlet (3). A drain valve is provided at the lower end of the volute (1), and a water spray head (17) is connected to the upper end of the volute (1).

2. The easy-to-maintain centrifugal fan according to claim 1, characterized in that, A water pipe fixing bracket (14) is provided on the base (7), and the water nozzle (17) is connected to a water inlet pipe (15) through a valve (16). The water inlet pipe (15) is fixed on the water pipe fixing bracket (14).

3. The easy-to-maintain centrifugal fan according to claim 2, characterized in that, A mesh cover is detachably installed on the air inlet.

4. The easy-to-maintain centrifugal fan according to claim 3, characterized in that, A slide rail plate (6) is provided in the volute (1) near the air outlet (3). A long groove along the vertical direction is formed on the slide rail plate (6). A slider (5) is provided at the upper end of the sealing plate (4). The slider (5) is at least partially slidably disposed in the long groove.

5. The easy-to-maintain centrifugal fan according to claim 4, characterized in that, The slider (5) is provided with a screw, which passes through the long groove and is engaged with a locking nut.

6. The easy-to-maintain centrifugal fan according to claim 5, characterized in that, The base (7) is provided with a pulley housing (9), and a first pulley (10) and a second pulley (11) connected by a belt are respectively provided in the pulley housing (9). The base (7) is provided with a motor (8), which is connected to the first pulley (10). The second pulley (11) is connected to the impeller (2) through a rotating shaft (12).

7. The easy-to-maintain centrifugal fan according to claim 6, characterized in that, The base (7) is provided with a bearing seat (13), and the rotating shaft (12) is at least partially rotatably disposed in the bearing seat (13).

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