CN211623832U

CN211623832U - Centrifugal fan that can reduce noise

Info

Publication number: CN211623832U
Application number: CN201922412688.5U
Authority: CN
Inventors: 赵俊皓; 刘云义; 李治涛; 李雪
Original assignee: Liaoning Magna Technology Co Ltd
Current assignee: Liaoning Magna Technology Co Ltd
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-10-02
Anticipated expiration: 2029-12-29

Abstract

The utility model discloses a but centrifugal fan of noise reduction, the power distribution box comprises a box body, the equal fixedly connected with stop collar in both sides of box inner chamber bottom, the first spring of bottom fixedly connected with of stop collar inner chamber, the top fixedly connected with depression bar of first spring, the inner chamber of box is provided with the base, the top of depression bar run through the stop collar and with base fixed connection, fixedly connected with slide bar between two stop collars. The utility model discloses a set up box, stop collar, first spring, depression bar, base, slide bar, second spring, sliding sleeve, vaulting pole, connecting block, stereoplasm rubber piece, fixed box, bolt, visor, fixture block, draw-in groove, control box, stopper, kelly, third spring, dead lever, abatvoix, sound absorption piece, amortization box, amortization cotton, and acoustic celotex board, solved the problem of the unable noise reduction of current centrifugal fan, possess the advantage that reduces the noise when centrifugal fan moves, be worth promoting.

Description

Centrifugal fan that can reduce noise

Technical Field

The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan of degradable making an uproar.

Background

The centrifugal fan belongs to one of impeller machines, and is widely applied to various fields of energy, environment, aviation and the like, and is one of main energy consumption equipment in industrial and agricultural production, the centrifugal fan is one of four parts in a dust removal ventilation system, and is a relatively precise running machine.

Disclosure of Invention

An object of the utility model is to provide a can fall centrifugal fan of making an uproar possesses the advantage of noise reduction, has solved the problem of the unable noise reduction of current centrifugal fan.

In order to achieve the above object, the utility model provides a following technical scheme: a noise-reducing centrifugal ventilator comprises a box body, wherein both sides of the bottom of an inner cavity of the box body are fixedly connected with limiting sleeves, the bottom of the inner cavity of each limiting sleeve is fixedly connected with a first spring, the top of the first spring is fixedly connected with a pressure rod, the inner cavity of the box body is provided with a base, the top of the pressure rod penetrates through the limiting sleeves and is fixedly connected with the base, a slide rod is fixedly connected between the two limiting sleeves, both sides of the surface of the slide rod are sleeved with a second spring and a slide sleeve, the top of the slide sleeve is movably connected with a support rod, one end, away from the slide sleeve, of the support rod is movably connected with the bottom of the base, the top of the base is fixedly connected with a ventilator body, both sides of the ventilator body are fixedly connected with connecting blocks, one side, opposite to the two connecting blocks, is fixedly connected with, the side, away from the hard rubber block, of the fixing box is fixedly connected with the inner wall of the box body, the side, away from the connecting block, of the hard rubber block penetrates through the inner cavity of the fixing box, a bolt is arranged at the top of the fixing box, the bottom of the bolt sequentially penetrates through the fixing box and the hard rubber block and extends to the bottom of the fixing box, the right side of the front face of the ventilator body is movably connected with a protective cover through a hinge, a clamping block is fixedly connected to the left side of the protective cover, a clamping groove is formed in the left side of the clamping block, a control box is fixedly connected to the left side of the front face of the ventilator body, a limiting block is arranged in the inner cavity of the control box, a clamping rod is arranged on the left side of the control box, the right end of the clamping rod penetrates through the inner cavity of the control, the right side of dead lever runs through the control box and extends to the inner chamber of draw-in groove, the back fixedly connected with abatvoix of visor, the inner wall fixedly connected with of ventilation blower body inhales the sound piece, the top of ventilation blower body output runs through the box and communicates there is the amortization box, the inner wall fixedly connected with amortization cotton of amortization box.

Preferably, the top of stop collar is seted up with the first through-hole that the depression bar cooperation was used, the top of sliding sleeve and the junction of vaulting pole pass through first pivot swing joint, the top of vaulting pole passes through second pivot swing joint with the junction of base.

Preferably, the bottom fixedly connected with slider of sliding sleeve, the spout that uses with the slider cooperation is seted up to the bottom of box inner chamber, and the bottom of slider contacts with the bottom of spout inner chamber.

Preferably, the top of box is seted up with the opening that the cooperation of ventilation blower body output was used, the one end that two second springs are relative all contacts with the sliding sleeve, the one end that two second springs are opposite all contacts with the stop collar.

Preferably, the top fixedly connected with rubber pad of base, the inner wall fixedly connected with acoustic celotex board of box, inhale the quantity of sound piece and be six, and evenly distributed is at the inner wall of ventilation blower body.

Preferably, the left side of the control box is provided with a second through hole matched with the clamping rod for use, the right side of the control box is provided with a third through hole matched with the fixing rod for use, and the bottom of the fixing box is provided with a threaded hole matched with the bolt for use.

Preferably, the protective cover is circular, an air inlet opening is formed in the center of the protective cover, and the sound absorption plate is circular and provided with an air inlet opening in the center of the sound absorption plate.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up box, stop collar, first spring, depression bar, base, slide bar, second spring, sliding sleeve, vaulting pole, connecting block, stereoplasm rubber piece, fixed box, bolt, visor, fixture block, draw-in groove, control box, stopper, kelly, third spring, dead lever, abatvoix, sound absorption piece, amortization box, amortization cotton, and acoustic celotex board, solved the problem of the unable noise reduction of current centrifugal fan, possess the advantage that reduces the noise when centrifugal fan moves, be worth promoting.

2. The utility model discloses a set up the slide bar, can make things convenient for the use of sliding sleeve, through setting up the stereoplasm rubber piece, can absorb the vibrations that produce when the ventilation blower body moves, through setting up the bolt, can conveniently fix the stereoplasm rubber piece, through setting up the stopper, can restrict the removal of kelly, through setting up the draw-in groove, can make things convenient for the use of dead lever, through setting up the abatvoix, can absorb the noise that the ventilation blower body produced, through setting up first pivot and second pivot, can make things convenient for the use of vaulting pole, through setting up first through-hole, can make things convenient for the use of depression bar.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the silencing box of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is a partially enlarged view of fig. 1 at B.

In the figure: 1-box body, 2-limit sleeve, 3-first spring, 4-pressure bar, 5-base, 6-slide bar, 7-second spring, 8-sliding sleeve, 9-stay bar, 10-ventilator body, 11-connecting block, 12-hard rubber block, 13-fixed box, 14-bolt, 15-protective cover, 16-fixture block, 17-clamping groove, 18-control box, 19-limit block, 20-fixture bar, 21-third spring, 22-fixed bar, 23-sound absorption board, 24-sound absorption block, 25-sound absorption box, 26-sound absorption cotton, 27-sound insulation board.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a noise-reducing centrifugal ventilator comprises a box body 1, wherein both sides of the bottom of an inner cavity of the box body 1 are fixedly connected with a limiting sleeve 2, the bottom of the inner cavity of the limiting sleeve 2 is fixedly connected with a first spring 3, the top of the first spring 3 is fixedly connected with a pressure lever 4, the inner cavity of the box body 1 is provided with a base 5, the top of the pressure lever 4 penetrates through the limiting sleeve 2 and is fixedly connected with the base 5, a slide bar 6 is fixedly connected between the two limiting sleeves 2, both sides of the surface of the slide bar 6 are sleeved with a second spring 7 and a slide sleeve 8, the top of the slide sleeve 8 is movably connected with a support bar 9, one end of the support bar 9 far away from the slide sleeve 8 is movably connected with the bottom of the base 5, the top of the base 5 is fixedly connected with a ventilator body 10, both sides of the ventilator body 10, a fixing box 13 is arranged on one side of the hard rubber block 12 far away from the connecting block 11, one side of the fixing box 13 far away from the hard rubber block 12 is fixedly connected with the inner wall of the box body 1, one side of the hard rubber block 12 far away from the connecting block 11 penetrates into the inner cavity of the fixing box 13, a bolt 14 is arranged at the top of the fixing box 13, the bottom of the bolt 14 sequentially penetrates through the fixing box 13 and the hard rubber block 12 and extends to the bottom of the fixing box 13, a protective cover 15 is movably connected to the right side of the front of the ventilator body 10 through a hinge, a clamping block 16 is fixedly connected to the left side of the protective cover 15, a clamping groove 17 is formed in the left side of the clamping block 16, a control box 18 is fixedly connected to the left side of the front of the ventilator body 10, a limiting block 19 is arranged in the inner cavity of the control box 18, a clamping rod 20 is arranged on the left side of, the right side of the limiting block 19 is fixedly connected with a fixing rod 22, the right side of the fixing rod 22 penetrates through the control box 18 and extends to the inner cavity of the clamping groove 17, the back surface of the protective cover 15 is fixedly connected with an acoustic board 23, the inner wall of the ventilator body 10 is fixedly connected with an acoustic block 24, the top of the output end of the ventilator body 10 penetrates through the box body 1 and is communicated with an acoustic box 25, the inner wall of the acoustic box 25 is fixedly connected with an acoustic cotton 26, the top of the limiting sleeve 2 is provided with a first through hole matched with the pressure rod 4 for use, the joint of the top of the sliding sleeve 8 and the support rod 9 is movably connected through a first rotating shaft, the joint of the top of the support rod 9 and the base 5 is movably connected through a second rotating shaft, the bottom of the sliding sleeve 8 is fixedly connected with a sliding block, the bottom of the inner cavity of the box body 1 is provided with a sliding groove matched, the opposite ends of the two second springs 7 are both contacted with the sliding sleeve 8, the opposite ends of the two second springs 7 are both contacted with the limiting sleeve 2, the top of the base 5 is fixedly connected with a rubber pad, the inner wall of the box body 1 is fixedly connected with a sound insulation board 27, the sound absorption blocks 24 are six and evenly distributed on the inner wall of the ventilator body 10, the left side of the control box 18 is provided with a second through hole matched with the clamping rod 20 for use, the right side of the control box 18 is provided with a third through hole matched with the fixing rod 22 for use, the bottom of the fixing box 13 is provided with a threaded hole matched with the bolt 14 for use, the protective cover 15 is circular, the center is provided with an air inlet opening, the sound absorption board 23 is circular, the center is provided with an air inlet opening, the sliding rod 6 is arranged to facilitate the use of the sliding sleeve 8, and the hard rubber block 12 is arranged, the hard rubber block 12 can be conveniently fixed by arranging the bolt 14, the movement of the clamping rod 20 can be limited by arranging the limit block 19, the use of the fixed rod 22 can be facilitated by arranging the clamping groove 17, the noise generated by the ventilator body 10 can be absorbed by arranging the sound-absorbing plate 23, the use of the support rod 9 can be facilitated by arranging the first rotating shaft and the second rotating shaft, the use of the pressure rod 4 can be facilitated by arranging the first through hole, the box body 1, the limit sleeve 2, the first spring 3, the pressure rod 4, the base 5, the slide rod 6, the second spring 7, the sliding sleeve 8, the support rod 9, the connecting block 11, the hard rubber block 12, the fixed box 13, the bolt 14, the protective cover 15, the clamping block 16, the clamping groove 17, the control box 18, the limit block 19, the clamping rod 20, the third spring 21, the fixed rod 22, the sound-absorbing plate 23, the sound-absorbing block 24, the sound-absorbing box 25, the sound, the problem of current centrifugal fan can't the noise reduction is solved, possess the advantage that reduces the noise when centrifugal fan moves, be worth promoting.

When the ventilator is used, a user opens the ventilator body 10, when the ventilator body 10 runs, the fan blades run at high speed, noise generated by interaction between flowing gas and solid media absorbs most of the noise through the sound absorption plates 23 and the sound absorption blocks 24 which are arranged at the air inlet and the inner wall, when the gas passes through the air outlet, the sound absorption box 25 arranged at the air outlet and the sound absorption cotton 26 in the inner cavity of the sound absorption box absorb the noise at the air outlet, the rest small amount of the noise is absorbed by the sound insulation plate 27 on the inner wall of the box body 1, the ventilator generates oscillation when running, the pressure rod 4 at the bottom of the ventilator body 10 is impacted by the oscillation to extrude the first spring 3, the first spring 3 absorbs part of the oscillation, the stay rod 9 at the bottom of the base 5 downwards extrudes the sliding sleeve 8, the sliding sleeve 8 transversely extrudes the second springs 7 at two sides through the matching of the sliding rod 6, the second spring 7 absorbs part of the, so that the ventilator cannot generate resonance with the contacted rigid medium during operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a centrifugal fan of degradable noise, includes box (1), its characterized in that: the ventilator is characterized in that limiting sleeves (2) are fixedly connected to two sides of the bottom of an inner cavity of the box body (1), a first spring (3) is fixedly connected to the bottom of the inner cavity of the limiting sleeve (2), a pressing rod (4) is fixedly connected to the top of the first spring (3), a base (5) is arranged in the inner cavity of the box body (1), the top of the pressing rod (4) penetrates through the limiting sleeves (2) and is fixedly connected with the base (5), a sliding rod (6) is fixedly connected between the two limiting sleeves (2), a second spring (7) and a sliding sleeve (8) are sleeved on two sides of the surface of the sliding rod (6), a supporting rod (9) is movably connected to the top of the sliding sleeve (8), one end, far away from the sliding sleeve (8), of the supporting rod (9) is movably connected with the bottom of the base (5), a ventilator body (10) is fixedly connected to the top of the base (5), and connecting blocks, the two opposite sides of the two connecting blocks (11) are fixedly connected with hard rubber blocks (12), one side, away from the connecting blocks (11), of each hard rubber block (12) is provided with a fixing box (13), one side, away from the hard rubber blocks (12), of each fixing box (13) is fixedly connected with the inner wall of the box body (1), one side, away from the connecting blocks (11), of each hard rubber block (12) penetrates through the inner cavity of each fixing box (13), a bolt (14) is arranged at the top of each fixing box (13), the bottom of each bolt (14) penetrates through the fixing boxes (13) and the hard rubber blocks (12) in sequence and extends to the bottom of each fixing box (13), the right side of the front face of the ventilator body (10) is movably connected with a protective cover (15) through a hinge, the left side of each protective cover (15) is fixedly connected with a clamping block (16), and the left side of each clamping, the ventilator comprises a ventilator body (10), a control box (18) is fixedly connected to the front left side of the ventilator body (10), a limiting block (19) is arranged in an inner cavity of the control box (18), a clamping rod (20) is arranged on the left side of the control box (18), the right end of the clamping rod (20) penetrates through the inner cavity of the control box (18) and is sleeved with a third spring (21), the right side of the clamping rod (20) is fixedly connected with the limiting block (19), a fixing rod (22) is fixedly connected to the right side of the limiting block (19), the right side of the fixing rod (22) penetrates through the control box (18) and extends to the inner cavity of a clamping groove (17), a sound absorption plate (23) is fixedly connected to the back of a protective cover (15), a sound absorption block (24) is fixedly connected to the inner wall of the ventilator body (10), and a sound absorption box (25) is communicated with the, the inner wall of the silencing box (25) is fixedly connected with silencing cotton (26).

2. A centrifugal fan capable of reducing noise according to claim 1, wherein: the top of stop collar (2) is seted up with depression bar (4) cooperation first through-hole of using, the top of sliding sleeve (8) is through first pivot swing joint with the junction of vaulting pole (9), the top of vaulting pole (9) is through second pivot swing joint with the junction of base (5).

3. A centrifugal fan capable of reducing noise according to claim 1, wherein: the bottom fixedly connected with slider of sliding sleeve (8), the spout that uses with the slider cooperation is seted up to the bottom of box (1) inner chamber, and the bottom of slider contacts with the bottom of spout inner chamber.

4. A centrifugal fan capable of reducing noise according to claim 1, wherein: the opening that uses with ventilation blower body (10) output cooperation is seted up at the top of box (1), and the one end that two second springs (7) are relative all contacts with sliding sleeve (8), and the one end that two second springs (7) are opposite all contacts with stop collar (2).

5. A centrifugal fan capable of reducing noise according to claim 1, wherein: the top fixedly connected with rubber pad of base (5), the inner wall fixedly connected with acoustic celotex board (27) of box (1), inhale the quantity of sound piece (24) and be six, and evenly distributed is at the inner wall of ventilation blower body (10).

6. A centrifugal fan capable of reducing noise according to claim 1, wherein: the left side of the control box (18) is provided with a second through hole matched with the clamping rod (20) for use, the right side of the control box (18) is provided with a third through hole matched with the fixing rod (22) for use, and the bottom of the fixing box (13) is provided with a threaded hole matched with the bolt (14) for use.

7. A centrifugal fan capable of reducing noise according to claim 1, wherein: the protective cover (15) is circular, an air inlet opening is formed in the center of the protective cover, and the sound absorption plate (23) is circular, and an air inlet opening is formed in the center of the sound absorption plate.