CN101933785A

CN101933785A - Silencer of dust collector

Info

Publication number: CN101933785A
Application number: CN2010102710276A
Authority: CN
Inventors: 孙大亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-31
Filing date: 2010-08-31
Publication date: 2011-01-05

Abstract

The invention relates to a silencer of dust collector, comprising a bottom layer and a middle layer as well as a top layer; wherein the bottom layer and the middle layer are mutually fastened, so as to form a lower cavity, the middle layer is provided with a lower air outlet which causes the lower cavity to be communicated with outside air, the lower cavity is also internally provided with a retaining wall provided with a notch, and a baffle is arranged between the lower air outlet and the notch; a silencing chamber is formed between the periphery of the retaining wall and the circular side wall of the lower cavity, the silencing chamber is internally provided with a plurality of silencing plates at intervals; the top layer is arranged at the upper part of the middle layer, the top layer and the middle layer are mutually fastened, so as to form an upper cavity, the middle layer is provided with an upper air outlet which causes the upper cavity to be communicated with outside air, the upper cavity is internally provided with a first retaining wall and a second retaining wall, the space between the periphery of the first retaining wall and the circular side wall of the upper cavity is divided by the second retaining wall, so as to form two silencing chambers which are mutually communicated, and the two silencing chambers are internally provided with a plurality of silencing plates at intervals. The invention is used in a dust collector and can effectively reduce noise of the dust collector.

Description

The silencing means of dust catcher

Technical field

The present invention relates to a kind of dust catcher, especially the silencing means of dust catcher.

Background technology

The dust catcher of prior art generally includes pedestal, be arranged at the blower fan in the pedestal and be located at the outer lid of this blower fan, form the cavity of ccontaining this blower fan between pedestal and the lid, cavity is connected with outside air by exhaust outlet, the air of discharging from fan outlet directly enters this cavity, pressure in the cavity forces air to discharge dust catcher from exhaust outlet greater than outside air pressure.Yet the noise during owing to blower fan work is very big, and noise is unhinderedly directly discharged dust catcher, influences surrounding environment, further influences the normal live and work of people.Therefore the operating noise that reduces dust catcher is the desirability of reality.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of silencing means of dust catcher, and noise is reduced when making dust catcher work.

The silencing means of this dust catcher, comprise a bottom and an intermediate layer, this bottom and this intermediate layer be interlocked form one can ccontaining blower fan following cavity, the silencing means of this dust catcher is provided with the following exhaust outlet that described cavity down is connected with outside air, in the cavity retaining wall around this blower fan is set also under described, this retaining wall tool one breach is provided with a blocks air and directly flows to the described baffle plate of exhaust outlet down from described breach between described exhaust outlet down and described breach.

Form an anechoic chamber between the ring-side wall of described retaining wall periphery and following cavity, in this anechoic chamber, be interval with a plurality of acoustical panels.

The air that blower fan comes out is discharged from the breach of retaining wall, because the effect of baffle plate, air can not directly arrive down exhaust outlet, force it in the anechoic chamber, to flow, through one section longer distance, sound wave is repeatedly decayed after following exhaust outlet is discharged in the external environment with air, shows noise reduction effect preferably.

Further, it comprises that also one places the top layer on top, intermediate layer, this top layer and this intermediate layer be interlocked form one can ccontaining described blower fan upper plenum, the silencing means of this dust catcher is provided with the last exhaust outlet that described upper plenum is connected with outside air, be provided with one first retaining wall and one second retaining wall in the described upper plenum, cut apart by second retaining wall between the periphery of this first retaining wall and the ring-side wall of described upper plenum and form two anechoic chambers that are connected, in described two anechoic chambers, be arranged at intervals with a plurality of acoustical panels.

The described exhaust outlet of going up is arranged at described intermediate layer with following exhaust outlet.

Air enters in the upper plenum, makes air flow in two anechoic chambers by first retaining wall and second retaining wall, and the road of flowing is through complications, and through the effect of the absorption acoustic wave energy of acoustical panel, sound wave is repeatedly decayed, and discharges from last exhaust outlet at last.

Description of drawings

Fig. 1 is the cutaway view of silencing means of the present invention;

Fig. 2 is the stereogram of bottom of the present invention;

Fig. 3 is the vertical view of bottom of the present invention;

Fig. 4 is the stereogram in intermediate layer of the present invention, shows the technical characterictic that is interlocked with bottom;

Fig. 5 is the upward view in intermediate layer of the present invention;

Fig. 6 is the stereogram at another visual angle in intermediate layer of the present invention, shows the technical characterictic that is interlocked with top layer;

Fig. 7 is the vertical view in intermediate layer of the present invention;

Fig. 8 is the stereogram of top layer of the present invention; And

Fig. 9 is the upward view of top layer of the present invention.

The specific embodiment

Referring to Fig. 1, silencing means 1 of the present invention is the device of the ccontaining blower fan 2 that is interlocked by bottom 10, intermediate layer 20 and top layer 30, wherein intermediate layer 20 is interlocked with bottom 10 and forms the following cavity 100 of ccontaining this blower fan 2, intermediate layer 20 is interlocked with bottom 30 and forms the upper plenum 200 of ccontaining this blower fan 2, and following cavity 100 is isolated with upper plenum 200.

Referring to Fig. 2 and Fig. 3, be provided with a retaining wall 11 around these blower fan 2 (not shown) at bottom 10, retaining wall 11 has a breach 110, be provided with a baffle plate 12 near the retaining wall 11, form an anechoic chamber between the ring-side wall 16 of the periphery of retaining wall 11 and bottom 10, for the air that flows out from breach 110 in wherein flowing.Be interval with a plurality of acoustical panels 13 in this anechoic chamber, Yi Bian have big bloop 130 on this acoustical panel 13, another side has bloop 131, and the dislocation of adjacent acoustical panel both sides is arranged.

Referring to Fig. 4 and Fig. 5, on intermediate layer 20, be provided with breach 120 and baffle plate 22 with the corresponding retaining wall 21 of bottom, retaining wall, also be provided with the following exhaust outlet 28 that cavity 100 is connected with outside air under making on intermediate layer 20, this time exhaust outlet 28 and breach 120 are located at the both sides of baffle plate 22 respectively.

The air that blower fan 2 comes out is from retaining

wall

11,21 breach 110,210 discharge, because the effect of

baffle plate

12,22, air can not directly arrive down exhaust outlet 28, force it in the anechoic chamber, to flow, through one section longer distance, sound wave is repeatedly decayed after following exhaust outlet 28 is discharged in the outside air with air, shows noise reduction effect preferably.Acoustical panel 13 in this anechoic chamber not only can absorb more noise, and arranges by the dislocation of adjacent acoustical panel both sides, forces air glide path in the anechoic chamber tortuous more, and the energy of sound wave is further decayed.

Referring to Fig. 6 to Fig. 9, be interlocked with top layer in intermediate layer 20 and also be provided with one first retaining wall 201 in the upper plenum 200 that forms, 301 and 1 second retaining wall 202,302, first retaining wall 201, between the ring-side wall of 301 periphery and upper plenum 200 by second retaining wall 202,302 cut apart two anechoic chambers that are connected of formation, a plurality of acoustical panels 33 (in the present embodiment being two) are set in these two anechoic chambers, have a plurality of bloops on the acoustical panel 33, make upper plenum 200 communicate with outside air by the last exhaust outlet 29 of being located at intermediate layer 20.

Further, on described acoustical panel, also sponge can be set among the present invention.

Air enters in the upper plenum 200, by first retaining wall 201,301 and second retaining wall 202,302 make air flow in two anechoic chambers, and the road of flowing is through complications, and through the effect of the absorption acoustic wave energy of acoustical panel 33, sound wave is repeatedly decayed, and discharges from last exhaust outlet 29 at last.

Claims

1. the silencing means of a dust catcher, comprise a bottom and an intermediate layer, this bottom and this intermediate layer be interlocked form one can ccontaining blower fan following cavity, the silencing means of this dust catcher is provided with the following exhaust outlet that described cavity down is connected with outside air, it is characterized in that in the described following cavity retaining wall around this blower fan being set also, this retaining wall tool one breach is provided with a blocks air and directly flows to the described baffle plate of exhaust outlet down from described breach between described exhaust outlet down and described breach.

2. the silencing means of dust catcher as claimed in claim 1 is characterized in that formation one anechoic chamber between the peripheral ring-side wall with following cavity of described retaining wall, is interval with a plurality of acoustical panels in this anechoic chamber.

3. the silencing means of dust catcher as claimed in claim 2 is characterized in that the described acoustical panel big bloop of tool on one side, the little bloop of another side tool, and adjacent acoustical panel both sides dislocation is arranged.

4. the silencing means of dust catcher as claimed in claim 1, it is characterized in that it comprises that also one places the top layer on top, intermediate layer, this top layer and this intermediate layer be interlocked form one can ccontaining described blower fan upper plenum, the silencing means of this dust catcher is provided with the last exhaust outlet that described upper plenum is connected with outside air, be provided with one first retaining wall and one second retaining wall in the described upper plenum, cut apart by second retaining wall between the periphery of this first retaining wall and the ring-side wall of described upper plenum and form two anechoic chambers that are connected, in described two anechoic chambers, be arranged at intervals with a plurality of acoustical panels.

5. the silencing means of dust catcher as claimed in claim 4 is characterized in that the described exhaust outlet of going up is arranged at described intermediate layer with following exhaust outlet.

6. as the silencing means of claim 2 or 4 described dust catchers, it is characterized in that described acoustical panel is provided with sponge.