CN218235528U - Centrifugal fan who makes an uproar falls - Google Patents

Abstract

The utility model discloses a centrifugal fan that makes an uproar falls, buffer board including ventilation blower body and bottom, the buffer board bottom is connected with a plurality of slide bars, the below of buffer board is provided with the mount pad, a plurality of spouts have been seted up at the top of mount pad, spout and slide bar sliding connection one by one, seted up on the lateral wall of mount pad and kept away the groove, the both sides of keeping away the groove are connected with the fixed plate respectively, it is connected with the fixed axle to rotate between two fixed plates, it is connected with the wane to rotate on the fixed axle, be connected with the extension spring between the one end bottom of wane and the lateral wall of keeping away the groove, the bottom of buffer board is connected with the roof, the bottom of roof contacts with the top surface of the wane other end. The utility model discloses a cooperation of roof and wane is used, makes the vibration of ventilation blower body obtain the buffering, has improved the noise reduction effect of device. And through the cooperation of first permanent-magnet iron piece and second permanent-magnet iron piece, make the removal of slide bar obtain buffering, further improved the buffering effect of device.

Description

Centrifugal fan who makes an uproar falls

Technical Field

The utility model relates to a centrifugal fan technical field especially relates to a centrifugal fan who makes an uproar falls.

Background

The centrifugal ventilator is a driven fluid machine which accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, then decelerates in a fan shell, changes the flow direction, and converts the kinetic energy into the potential energy to output, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and can generate relatively large noise when in use.

The noise generated by the centrifugal ventilator is generally aerodynamic noise, mechanical noise and gas-solid coupling noise, the aerodynamic noise and the gas-solid coupling noise are generally reduced by adopting a silencer and an internal structure of a fine-tuning ventilator, the mechanical noise is generally reduced by installing a buffer rubber pad on a fixed seat, but the damping and noise reduction effect of the rubber pad is very limited in actual use, so that the noise generated by the operation of the centrifugal ventilator often has great influence on the surrounding environment, and especially in an application scene with strict noise pollution control, the noise reduction effect of the existing centrifugal ventilator is difficult to meet the requirements of the application field. Therefore, it is necessary to provide a centrifugal fan with better noise reduction effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a noise-reducing centrifugal ventilator.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a centrifugal fan who makes an uproar falls, includes the ventilation blower body, the bottom fixed mounting of ventilation blower body has the buffer board, a plurality of slide bars of buffer board bottom fixedly connected with, the below of buffer board is provided with the mount pad, the mount pad sets up along edge all around, a plurality of spouts have been seted up at the top of mount pad, the spout with slide bar one-to-one sliding connection, seted up respectively on the double-phase opposite lateral wall of mount pad and kept away the position groove, the inner wall of mount pad in keep away the both sides of position groove fixedly connected with fixed plate respectively, it is connected with the fixed axle to rotate between the fixed plate of position groove both sides, rotates on the fixed axle and is connected with the wane, and the one end of wane stretches into keep away the inslot, just the bottom of wane with keep away fixedly connected with extension spring between the lateral wall of position groove, two roofs of bottom fixedly connected with of buffer board, the bottom of each roof respectively with the top surface of the wane other end contacts.

As the utility model discloses scheme further still, the equal first permanent-magnet iron piece of fixedly connected with in bottom of slide bar, first permanent-magnet iron piece sliding connection with in the spout, the bottom inner wall fixedly connected with second permanent-magnet iron piece of spout, just first permanent-magnet iron piece sets up with the homonymy magnetic pole that has the second permanent-magnet iron piece relatively.

As a further aspect of the present invention, the top of the first permanent magnet block is fixedly connected with a buffering ring pad.

As the utility model discloses further scheme again, the air intake has been seted up to one side of ventilation blower body, one side of ventilation blower body is equipped with out the tuber pipe, goes out the mouth of pipe terminal surface fixedly connected with sealing washer of tuber pipe.

As the utility model discloses further scheme again, the top fixedly connected with support frame of buffer board, and the support frame is fixed mutually with the ventilation blower body.

As the utility model discloses scheme further again, a plurality of fixed ears of bottom fixedly connected with of mount pad have all seted up a plurality of mounting holes on the fixed ear.

As a further proposal, the bottom of the fixing lug is fixedly connected with a rubber pad.

The utility model has the advantages that:

1. the cooperation through roof and wane is used, when centrifugal fan vibrates, makes the buffer board atress to drive the slide bar and reciprocate along the spout, through roof, wane, and the interact power between the extension spring, make the vibration of buffer board obtain the buffering, and then make the ventilation blower body under the operating condition obtain effectual buffering shock attenuation, play the effect of making an uproar of falling to centrifugal fan, improved centrifugal fan's the noise reduction effect.

2. Through the cooperation use of first permanent-magnet iron piece and second permanent-magnet iron piece, according to homopolar repulsion's effect principle, make the slide bar obtain the buffering through the repulsion between first permanent-magnet iron piece and the second permanent-magnet iron piece, and then make the ventilation blower body obtain further buffering shock attenuation and noise reduction, improved the buffering effect of device.

3. Through set up the buffering ring pad on first permanent-magnet piece, can protect first permanent-magnet piece, avoid first permanent-magnet piece to slide the in-process from top to bottom and collide with mount pad direct contact and appear damaging, improved the stability that the device used.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a partial cross-sectional view of a structure of a buffer plate and a mounting seat of the present invention;

fig. 3 is a schematic view of the internal structure of the middle sliding chute of the present invention.

In the figure: 1. a ventilator body; 2. an air inlet; 3. a buffer plate; 4. a mounting base; 5. fixing the lug; 6. a rubber pad; 7. a support frame; 8. an air outlet pipe; 9. a seal ring; 10. a position avoiding groove; 11. a tension spring; 12. a top plate; 13. a fixed shaft; 14. a seesaw; 15. a fixing plate; 16. a slide bar; 17. a cushion ring pad; 18. a first permanent magnet block; 19. a second permanent magnet block; 20. a chute.

Detailed Description

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description.

Referring to fig. 1-3, a noise-reducing centrifugal ventilator comprises a ventilator body 1, a buffer plate 3 is fixedly mounted at the bottom of the ventilator body 1 through bolts, a plurality of slide bars 16 are fixedly connected at the bottom of the buffer plate 3 through bolts, a mounting seat 4 is arranged below the buffer plate 3, the mounting seat 4 is arranged along the peripheral edge, a plurality of sliding grooves 20 are formed in the top of the mounting seat 4, the sliding grooves 20 are slidably connected with the slide bars 16 one by one, two opposite side walls of the mounting seat 4 are respectively provided with a position avoiding groove 10, the inner wall of the mounting seat 4 and two sides of the position avoiding groove 10 are respectively fixedly connected with a fixing plate 15 through bolts, a fixing shaft 13 is rotatably connected between the fixing plates 15 at two sides of the position avoiding groove 10, a seesaw 14 is rotatably connected on the fixing shaft 13, one end of the seesaw 14 extends into the position avoiding groove 10, a tension spring 11 is fixedly connected between the bottom of the seesaw 14 and the side wall of the position avoiding groove 10, two top plates 12 are fixedly connected at the bottom of the buffer plate 3 through bolts, and the bottom of each top plate 12 is respectively contacted with the top surface of the other end of the seesaw 14. When ventilation blower body 1 during operation, ventilation blower body 1 produces certain vibrations in service, thereby make buffer board 3 atress, and drive slide bar 16 and reciprocate along spout 20, drive roof 12 downstream when buffer board 3 moves down, make wane 14 atress take place to rotate around fixed axle 13, make extension spring 11 atress extension and produce the pulling force when wane 14 rotates, according to lever principle, make extension spring 11 exert ascending reaction force to roof 12 through wane 14, thereby make buffer board 3 obtain the buffering, and then make ventilation blower body 1 under the operating condition obtain effectual buffering shock attenuation, play the effect of making an uproar of falling to ventilation blower body 1.

The utility model discloses it needs to explain, the equal first permanent-magnet iron of fixedly connected with 18 in the bottom of slide bar 16, 18 sliding connection of first permanent-magnet iron are in spout 20, and the bottom inner wall fixedly connected with second permanent-magnet iron 19 of spout 20, and first permanent-magnet iron 18 sets up with the synonym magnetic pole that has second permanent-magnet iron 19 relatively. In the process that the sliding rod 16 slides downwards, the first permanent magnet block 18 is driven to slide downwards along the sliding groove 20, and according to the action principle that like poles repel each other, the repulsion force between the first permanent magnet block 18 and the second permanent magnet block 19 is increased, so that the stress of the sliding rod 16 is buffered, and the buffering, shock absorption and noise reduction are further performed on the ventilator body 1.

In this embodiment, the top of the first permanent magnet block 18 is fixedly bonded with a buffering ring pad 17, and the buffering ring pad 17 can protect the first permanent magnet block 18, so as to prevent the first permanent magnet block 18 from being damaged due to direct contact collision with the mounting seat 4 in the up-and-down sliding process.

In this embodiment, air intake 2 has been seted up to one side of ventilation blower body 1, and air intake 2 makes things convenient for ventilation blower body 1 to admit air, and one side of ventilation blower body 1 is equipped with out tuber pipe 8, and the mouth of pipe terminal surface that goes out tuber pipe 8 is fixed to bond has sealing washer 9. The sealing ring 9 can make the air outlet pipe 8 and the external pipeline connected more closely, thereby effectively reducing the air outlet noise of the air outlet pipe 8.

In this embodiment, bolt fixedly connected with support frame 7 is passed through at the top of buffer board 3, and support frame 7 is fixed mutually with ventilation blower body 1, and support frame 7 can make ventilation blower body 1 be connected with buffer board 3 more firm.

In this embodiment, a plurality of fixed ears 5 of bottom fixedly connected with of mount pad 4 have all seted up a plurality of mounting holes on fixed ear 5, and fixed ear 5 makes things convenient for the staff to install fixedly mount pad 4. Rubber pads 6 are fixedly bonded at the bottoms of the fixing lugs 5, and the rubber pads 6 can increase the stability of the mounting seat 4.

The working principle is as follows: when ventilation blower body 1 during operation, ventilation blower body 1 produces certain vibrations in service, thereby make buffer board 3 atress, and drive slide bar 16 and reciprocate along spout 20, drive roof 12 downstream when buffer board 3 downstream, make wane 14 atress take place to rotate around fixed axle 13, make extension spring 11 atress extension and produce the pulling force when wane 14 rotates, according to lever principle, make extension spring 11 exert ascending reaction force to roof 12 through wane 14, thereby make buffer board 3 obtain the buffering, and then make ventilation blower body 1 under the operating condition obtain effectual buffering shock attenuation, play the noise reduction effect to ventilation blower body 1. Meanwhile, in the downward sliding process of the sliding rod 16, the first permanent magnet block 18 is driven to slide downward along the sliding groove 20, and according to the action principle that like poles repel each other, the repulsive force between the first permanent magnet block 18 and the second permanent magnet block 19 is increased, so that the stress of the sliding rod 16 is buffered, and the ventilator body 1 is further buffered, damped and denoised.

In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct.

Claims (7)

1. A noise-reducing centrifugal fan, comprising: including ventilation blower body (1), the bottom fixed mounting of ventilation blower body (1) has buffer board (3), a plurality of slide bars (16) of buffer board (3) bottom fixedly connected with, the below of buffer board (3) is provided with mount pad (4), mount pad (4) are along all around along the edge setting, a plurality of spouts (20) have been seted up at the top of mount pad (4), spout (20) with slide bar (16) sliding connection one by one, avoid a groove (10) have been seted up on the double-phase opposite lateral wall of mount pad (4) respectively, the inner wall of mount pad (4) in keep away the both sides of groove (10) fixedly connected with fixed plate (15) respectively, rotate between fixed plate (15) of keeping away groove (10) both sides and be connected with fixed axle (13), rotate on fixed axle (13) and be connected with wane (14), the one end of wane (14) stretches into in keeping away groove (10), just the bottom of wane (14) with fixedly connected with extension spring (11) between the lateral wall of keeping away groove (10), the bottom fixed plate (3) is connected with roof (12) respectively roof (12) and roof (12) the roof (12) each other end contact.

2. A noise-reducing centrifugal fan according to claim 1, wherein: the bottom of slide bar (16) is equal fixedly connected with first permanent magnet piece (18), first permanent magnet piece (18) sliding connection in spout (20), the bottom inner wall fixedly connected with second permanent magnet piece (19) of spout (20), just first permanent magnet piece (18) set up with the like magnetic pole that has second permanent magnet piece (19) relatively.

3. A noise-reducing centrifugal fan according to claim 2, wherein: the top of each first permanent magnet block (18) is fixedly connected with a buffer ring pad (17).

4. A noise-reducing centrifugal fan according to claim 1, wherein: air intake (2) have been seted up to one side of ventilation blower body (1), one side of ventilation blower body (1) is equipped with out tuber pipe (8), goes out mouth of pipe terminal surface fixedly connected with sealing washer (9) of tuber pipe (8).

5. A noise-reducing centrifugal fan according to claim 1, wherein: the top fixedly connected with support frame (7) of buffer board (3), and support frame (7) are fixed mutually with ventilation blower body (1).

6. A noise-reducing centrifugal fan according to claim 1, wherein: the bottom fixedly connected with of mount pad (4) a plurality of fixed ear (5), all seted up a plurality of mounting holes on fixed ear (5).

7. A noise reducing centrifugal fan according to claim 6, wherein: the bottoms of the fixing lugs (5) are fixedly connected with rubber pads (6).

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