Adjustable centrifugal fan

Abstract

The utility model discloses an adjustable centrifugal ventilator, which relates to the technical field of ventilation equipment and comprises a ventilator, an air inlet is arranged on one side of the ventilator, a connecting air pipe is fixed at the air inlet of the ventilator, and one end of the connecting air pipe far away from the ventilator is connected with a rubber hose. A ventilator enters and guides air through a connecting air pipe, a rubber hose and an external expansion pipe, a driving motor drives a fixing barrel to rotate through a driving shaft after working, the fixing barrel can drive the external expansion pipe to swing in a reciprocating mode by pressing a screw rod to abut against a limiting swing rod, and the orientation of the external expansion pipe can be changed; and meanwhile, the driving motor stops working so that the external expansion pipe can be fixed after swinging at a certain angle, the external expansion pipe can be used at the current position, and convenience is brought to use.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, and particularly relates to an adjustable centrifugal ventilator. Background Art

[0002] Centrifugal ventilators have shown significant advantages in various ventilation and air exchange systems due to their excellent performance. Briefly speaking, a centrifugal ventilator can efficiently suck air from the suction end, accelerate and change the direction of the air flow through the action of centrifugal force, and finally discharge it with a relatively high pressure and a relatively long range. Its greatest advantage lies in being able to provide a stable and strong air flow output, while maintaining a low noise level and a good energy efficiency ratio. It is very suitable for places that require large air volume and high-pressure ventilation and air exchange, such as industrial workshops, large building ventilation systems, mine ventilation, and air purification equipment, etc., effectively improving the air circulation efficiency and air quality, and is an important and indispensable equipment in modern ventilation technology.

[0003] The inventor found that the following problems in the prior art have not been well solved during the implementation of this solution: The position of the air inlet of this ventilator is fixed. In order to make it better adapt to the working environment, the staff will install a duct at its air inlet to change the position of the air inlet through the duct. If the required air inlet needs to be changed, the position of the air inlet of the duct also needs to be changed accordingly. However, since the air inlet of the duct is also fixed, it brings inconvenience to use. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an adjustable centrifugal ventilator, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An adjustable centrifugal ventilator, including a ventilator, there is an air inlet on one side of the ventilator, a connecting duct is fixed at the position of the ventilator where the air inlet is located, one end of the connecting duct away from the ventilator is connected with a rubber hose, one end of the rubber hose away from the connecting duct is connected with an outer expansion pipe, a swing rod is fixed at the top of the outer expansion pipe, a driving motor is arranged above the rubber hose, a driving shaft is fixed at the output end of the driving motor, a fixed cylinder is fixed at the end of the driving shaft away from the driving motor, and an extrusion screw is threadedly connected to one side of the fixed cylinder away from the driving shaft.

[0007] Preferably, the swing rod is inserted into the interior of the fixed cylinder, and the end of the extrusion screw is in contact with the outer wall of the swing rod.

[0008] Preferably, the outer diameter dimension of the swing rod matches the inner diameter dimension of the fixed cylinder.

[0009] Preferably, an installation base is also provided below the rubber hose. A gantry is fixed to the top of the installation base, and the drive motor is installed on the top of the gantry.

[0010] Preferably, a support base is fixed to one end of the top of the gantry close to the drive shaft. Reinforcement plates are fixed to both ends of the bottom of the support base. The ends of the reinforcement plates away from the support base are respectively fixedly connected to the inner top of the gantry. A bearing seat is fixed to the top of the support base, and a bearing is arranged inside the bearing seat.

[0011] Preferably, the drive shaft is in through communication with the bearing, and the drive shaft is rotationally connected to the bearing seat through the bearing.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The ventilator enters the air guide through the connecting air duct, rubber hose, and outer expansion pipe. After the drive motor works, the drive shaft drives the fixed cylinder to rotate. The fixed cylinder can drive the outer expansion pipe to swing reciprocally by pressing the limiting swing rod with the extrusion screw, and the orientation of the outer expansion pipe can be changed, so that the position of the air inlet can be adjusted accordingly. At the same time, when the drive motor stops working, the outer expansion pipe can swing and be fixed at a certain angle, enabling it to be used at the current position, which brings convenience to the use.

[0014] 2. The sliding of the swing rod in the fixed cylinder can change the horizontal height of the outer expansion pipe. When the swing rod rises in the fixed cylinder, the height of the outer expansion pipe will also rise accordingly, and the height of the air inlet will also rise, and the adjustable air intake can be achieved through swinging, increasing the applicable range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an adjustable centrifugal ventilator of the utility model;

[0016] Figure 2 is a schematic structural diagram of the ventilator, connecting air duct, rubber hose, and outer expansion pipe of an adjustable centrifugal ventilator of the utility model;

[0017] Figure 3 is a schematic structural diagram of the outer expansion pipe after swinging of an adjustable centrifugal ventilator of the utility model;

[0018] Figure 4 is a schematic structural diagram of the outer expansion pipe after rising of an adjustable centrifugal ventilator of the utility model.

[0019] In the figure: 1, a ventilator; 101, an air inlet; 2, a connecting air duct; 3, a rubber hose; 4, an outward expansion pipe; 5, a driving motor; 6, a driving shaft; 7, a fixed cylinder; 8, an extrusion screw; 9, a swing rod; 10, a bearing; 11, a bearing seat; 12, a mounting seat; 13, a gantry; 14, a support seat; 15, a reinforcing plate. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation manners.

[0021] As Figures 1-4 shown, an adjustable centrifugal ventilator includes a ventilator 1, an air inlet 101 is arranged on one side of the ventilator 1, a connecting air duct 2 is fixed at the position of the ventilator 1 where the air inlet 101 is located, one end of the connecting air duct 2 away from the ventilator 1 is connected with a rubber hose 3, one end of the rubber hose 3 away from the connecting air duct 2 is connected with an outward expansion pipe 4, a swing rod 9 is fixed at the top of the outward expansion pipe 4, a driving motor 5 is arranged above the rubber hose 3, the output end of the driving motor 5 is fixed with a driving shaft 6, one end of the driving shaft 6 away from the driving motor 5 is fixed with a fixed cylinder 7, and an extrusion screw 8 is threadedly connected to one side of the fixed cylinder 7 away from the driving shaft 6.

[0022] Specifically, the swing rod 9 is inserted into the inside of the fixed cylinder 7, and the end of the extrusion screw 8 is in contact with the outer wall of the swing rod 9, so as to limit the swing rod 9 in the fixed cylinder 7.

[0023] Specifically, the outer diameter size of the swing rod 9 matches the inner diameter size of the fixed cylinder 7, avoiding slipping and displacement during swinging, so that the extrusion screw 8 presses it more stably.

[0024] Specifically, a mounting seat 12 is also arranged below the rubber hose 3, a gantry 13 is fixed at the top of the mounting seat 12, and the driving motor 5 is installed at the top of the gantry 13 to provide support and fixation for the driving motor 5 during operation.

[0025] Specifically, a support seat 14 is fixed at one end of the top of the gantry 13 close to the driving shaft 6, both ends of the bottom of the support seat 14 are fixed with reinforcing plates 15, the ends of the reinforcing plates 15 away from the support seat 14 are respectively fixedly connected with the inner top of the gantry 13, a bearing seat 11 is fixed at the top of the support seat 14, a bearing 10 is arranged inside the bearing seat 11, the driving shaft 6 passes through and communicates with the bearing 10, and the driving shaft 6 is rotatably connected with the bearing seat 11 through the bearing 10, increasing the stability of the driving shaft 6 during rotation.

[0026] Working principle: The ventilator 1 conducts air intake through the connecting air duct 2, rubber hose 3, and expansion pipe 4. After the driving motor 5 works, it drives the fixed cylinder 7 to rotate through the drive shaft 6. The fixed cylinder 7 can drive the expansion pipe 4 to swing reciprocally by pressing the limiting swing rod 9 with the extrusion screw 8. The orientation of the expansion pipe 4 can be changed, so that the position of the air inlet can be adjusted accordingly. At the same time, when the driving motor 5 stops working, the expansion pipe 4 can be fixed after swinging at a certain angle, enabling it to be used at the current position, which brings convenience to the use. The sliding of the swing rod 9 inserted in the fixed cylinder 7 can change the horizontal height of the expansion pipe 4. When the swing rod 9 rises in the fixed cylinder 7, the height of the expansion pipe 4 will also rise accordingly, and the height of the air inlet will also rise, and adjustable air intake is achieved through swinging, increasing the application range of the device.

[0027] The circuits, electronic components, and control modules involved are all prior arts and can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0028] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable centrifugal fan, comprising a fan (1), characterized in that: One side of the ventilator (1) is provided with an air inlet (101). A connecting air duct (2) is fixed at the position of the air inlet (101) of the ventilator (1). One end of the connecting air duct (2) far from the ventilator (1) is connected with a rubber hose (3). One end of the rubber hose (3) far from the connecting air duct (2) is connected with an outward expanding pipe (4). A swing rod (9) is fixed at the top of the outward expanding pipe (4). A driving motor (5) is arranged above the rubber hose (3). The output end of the driving motor (5) is fixed with a driving shaft (6). One end of the driving shaft (6) far from the driving motor (5) is fixed with a fixed cylinder (7). One side of the fixed cylinder (7) far from the driving shaft (6) is threadedly connected with an extrusion screw rod (8).

2. The adjustable centrifugal ventilator according to claim 1, wherein: The swing rod (9) is inserted into the inside of the fixed cylinder (7), and the end of the extrusion screw rod (8) is in contact with the outer wall of the swing rod (9).

3. An adjustable centrifugal ventilator according to claim 1, characterized in that: The outer diameter dimension of the swing rod (9) matches the inner diameter dimension of the fixed cylinder (7).

4. An adjustable centrifugal ventilator according to claim 1, characterized in that: An installation seat (12) is also arranged below the rubber hose (3). A gantry (13) is fixed at the top of the installation seat (12). The driving motor (5) is installed at the top of the gantry (x3).

5. The adjustable centrifugal ventilator according to claim 4, characterized in that: One end of the top of the gantry (13) close to the driving shaft (6) is fixed with a support seat (14). Both ends of the bottom of the support seat (14) are fixed with strengthening plates (15). The ends of the strengthening plates (15) far from the support seat (14) are respectively fixedly connected with the inner top of the gantry (13). A bearing seat (11) is fixed at the top of the support seat (14). A bearing (10) is arranged inside the bearing seat (11).

6. The adjustable centrifugal ventilator according to claim 5, characterized in that: The driving shaft (6) is penetrated and communicated with the bearing (10), and the driving shaft (6) is rotatably connected with the bearing seat (11) through the bearing (10).

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