A kind of all-plastic boosterTechnical field
The present invention relates to a kind of mine local ventilator, particularly a kind of booster adopting all-plastic to make.
Background technology
At present, ventilating system is an important component part of pit mining, it it is the basic guarantee of mine safety production, the effect of booster (hereinafter referred to as portable blower) is in Mine Production, continually by fresh air conveying to mining face under mine, staff is breathed and dilutes and get rid of various poisonous, the harmful gas in down-hole and mine dust, creates good working environment, ensures the healthy and safety of underground operators.
Current countries in the world are all around the general objective saving the energy and protection environment in the research of mine local ventilator. In saving the energy, improving efficiency, one is adopt advanced technique and equipment, improve the accuracy of manufacture, the efficiency making blower fan improves 5%-10% to some extent, two is the numerical simulation epoch having had been enter into now ternary N-S equation, booster is established corresponding blower fan actual flow model, utilizes computer technology stream field to be calculated analyzing. Adopt Three-dimension flow impeller, make the unit efficiency of blower fan obtain further raising. In protection environment, reduction noise, mine local ventilator adopts clad type structure, is improved by the selection of the optimization of pneumatic design and sound-absorbing material meanwhile. In this regard, the noise of external blower fan is generally lower 5-10dB (A) than domestic like product. There is the Ke Fu Man etc. of three well three pond companies of Hao Dun company of Britain, Sulzer company of Switzerland and Japan, Germany in company main abroad, and there are Chongqing Mei Ke institute, Hubei match good fortune etc. in domestic main company.
My company, since the eighties exploitation in last century JBT, YBT booster series, has occupied considerable status in mine ventilator market, one of these series of products leading products also becoming company always at home. Along with the increase of blower fan manufacturing firm, the market competition is more and more fierce, and quality, price are also more and more sensitive in the market competition. This is just to it is proposed that higher requirement: continues to optimize manufacturing process, improve properties of product, strengthen cost control. Around this center requirement, we are doing various trial and research always, also achieve some achievements. Product structure and performance, progressively had improvement and promoted, also having made the technical merit of mine local ventilator of company be constantly in leading position at home, and product receives the extensive approval of user.
My mine local ventilator of company is mainly FBY series flame-proof type forced axial flow booster and FBDY series explosion-proof type press in type disrotatory axial flow local ventilating fan for mine is main at present, and the motor of this two classes blower fan all adopts YBF2 series explosion separation motor; Casing, impeller, silencing means are all weld with ordinary carbon steel material, be processed into; The weight of complete machine lays particular stress on, and is inconvenient to carry under mine. Silencing means is the packaging type structure adopting orifice plate to add noise elimination cotton, and soundproof effect is inconspicuous. Noise differs greatly according to blower fan model, and rotation air-blower noise is typically in 93��105dB (A) by �� more than 6.0, without the FBY �� 5.6/30 of deafener even up to 110dB (A). Noise is concentrated mainly on medium, high frequency scope, ear-piercing shriek, has had a strong impact on normal operation and the physical and mental health of operating worker. Sometimes even mask driving sound, machine operation sound and electric bell signal sound, have certain potential safety hazard.
So, the development of mine local ventilator is progressively with efficient, low noise, light weight for target. Anhui in 2007 China auspicious invention integral molded plastic impeller, solves the technology barriers such as the fire-retardant and antistatic that plastics use in down-hole. Injection molding, it is leaf Well-recovered, and Leaf positional distribution is uniform, improves aerodynamic performance. According to result of the test, injection molding impeller can make the highest total pressure efficiency of blower fan promote more than 5%, plays good effect to mine is energy-conservation. My company in 2007 have developed electric machine stand and blower housing is welded into the all-in-one machine structure of entirety, enormously simplify the mounting process of blower fan.
Summary of the invention
For this, act on the design concept of overall integration, it is an object of the invention to provide a kind of adopt advanced composite material (ACM) to be made light weight, efficiently, low noise, energy-conservation all-plastic booster.
The technical solution adopted for the present invention to solve the technical problems is: all-plastic booster is made up of suction muffler 1, one stage impeller 2, main body 3, sencond stage impeller 4, anchor ear 5 and exit silencer 6, wherein suction muffler 1 is quickly connected each through anchor ear 5 with main body 3, main body 3 and exit silencer 6, forms an entirety; The effect of air inlet deafener 1 is by distinguished and admirable steady importing draught fan impeller, absorbs simultaneously and isolates most radiated noise; One stage impeller 2, main body 3, sencond stage impeller 4 are the main bodys of blower fan, by the rotation of driven by motor impeller, convert electrical energy into mechanical energy and are then converted to wind energy; The effect of anchor ear 5 is quickly to connect air inlet deafener 1 and main body 3, and main body 3 and air outlet deafener 6; The effect of air outlet deafener 6 is the rotary airflow rectification will accelerated through impeller, and isolation, consumption rotate the discrete noise produced, meanwhile, for connecting the air duct fabric of conveying gas.
The suction muffler of the present invention is made up of collector-shoe gear and silencer mechanism, current collector is cone tubular structure, deafener is straight-tube shape, and the end that is relatively large in diameter of current collector cooperates with deafener fixing connection, and current collector includes afflux cylinder 8, first and supports the 9, first taper cone barrel 10, plastic uptake fair water cone 11; Fixed afflux cylinder 8 in first taper cone barrel 10, the fixed plastic uptake fair water cone 11 in axial line position in afflux cylinder 8, between afflux cylinder 8 and plastic uptake fair water cone 11, it is provided with the first support 9; First taper cone barrel 10 forms double-decker with afflux cylinder 8, is effectively increased the soundproof effect of afflux section; Acoustic filter includes the first urceolus 12, the first inner core the 17, second urceolus 19 and the first taper reflecting plate (16), and the first urceolus 12 and the first inner core 17 are co-axially mounted, and adopt the first arc reflection plate (18) mutually to connect firmly between the first urceolus 12 and the second urceolus 19; Second urceolus 19 outer end sets the first cover plate 21, coordinates lining dress outer end dampening foams layer 20 in the space between the second urceolus 19 with the first cover plate 21; Wall liner dress urceolus dampening foams layer 13 in the first urceolus 12, it is respectively arranged with inner core internal layer dampening foams layer 15 and inner core outer layer dampening foams layer 14 in inwall and the periphery of the first inner core 17, between the first urceolus 12 and the first inner core 17 or between urceolus dampening foams layer 13 and inner core outer layer dampening foams layer 14, is installed with a support arrangement.
The main body of the present invention includes second inner core the 25, first stator 26, interior machine barrel 27, the fixing inserts 28 of stator, end cap 33, bearing 34 and motor rotor 35, stator 36 and motor shaft; Install end cap 33 at interior machine barrel 27 two ends, bearing 34 is arranged on the two ends of stator 36 axle, and its outer ring is arranged on end cap 33, and in order to support motor rotor 35, stator 36 engagement sleeves of belt coil is contained in the fixing inserts 28 of stator; Second inner core the 25, first stator 26, interior machine barrel 27, fixing inserts 28 are single injection-molded; .
The one stage impeller 2 of the present invention and sencond stage impeller 4 direct connection respectively is on the motor shaft of motor rotor 35.
The silencer for air outlet of the present invention includes e a fourth external layer cylinder the 45, the 3rd internal layer cylinder 43, rear guide vane 41, baffle 42 and elastomeric layer 44; It is filled with elastomeric layer 44 at e a fourth external layer cylinder 45 and the 3rd internal layer cylinder 43, fixed rear guide vane 41 between the 3rd internal layer cylinder 43 and baffle 42, rear guide vane 41 had both had supporting role, had again wind-guiding effect; Described e a fourth external layer cylinder the 45, the 3rd internal layer cylinder 43, rear guide vane 41, baffle 42 and elastomeric layer 44 all adopt plastic production to form.
The main body 3 of the present invention adopts double-layer mainframe shell, and it includes the 3rd urceolus 23, elastomeric layer the 24, second inner core 25 and interior machine barrel 27; Between the 3rd urceolus 23 and the second inner core 25, it is filled with elastomeric layer 24, and elastomeric layer 24 is fixedly connected with the outer wall of the 3rd urceolus 23 inwall and the second inner core 25 respectively; Interior machine barrel 27 is sleeved in the second inner core 25, is installed with first stator 26, the both wind-guiding of more than 3 between interior machine barrel 27 and the second inner core 25, and internally machine barrel 27 is played a supporting role again; Interior machine barrel 27 is sleeved on the central axis in the second inner core 25; The wire barrel 30 arranged between the second inner core 25 and interior machine barrel 27, is correspondingly arranged on wiring through hole respectively in the position of the corresponding wire barrel 30 of the 3rd urceolus 23, elastomeric layer 24 second inner core 25 and interior machine barrel 27; The inwall of interior machine barrel 27 is embedded with the fixing inserts 28 of stator; 3rd top, urceolus 23 periphery is provided with junction box seat 29, and two ends are provided with the second flange 22, and bottom, periphery is provided with base 31; Described second flange the 22, the 3rd urceolus the 23, second inner core the 25, first stator 26, interior machine barrel 27, junction box seat 29, wire barrel 30 and base 31 are all adopted made of plastic.
The present invention includes the main frame internal layer cylinder of first inner core the 17, second inner core 25 and interior machine barrel 27 and adopts the formula composite of following quality proportioning to be made:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, can arbitrary component deal adjust, or adjusts about 2 any of the above component deals difference, and described main frame internal layer cylinder is by adopting above-mentioned formula composite to be made, and its performance significantly improves.
The present invention includes the outer layer barrel of first urceolus the 12, second urceolus the 19, the 3rd urceolus 23, junction box seat 29, wire barrel 30 and base 31 and adopts the formula composite of following quality proportioning to be made into and out of air port muffler shell:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, can arbitrary component deal adjust, or 2 any of the above component deal left and right respectively adjust, including first urceolus the 12, second urceolus the 19, the 3rd urceolus 23, junction box seat 29, wire barrel 30 and base 31 outer layer barrel and into and out of air port muffler shell by adopt above-mentioned formula composite be made, its performance significantly improves.
Any dampening foams layer of the present invention or elastomeric layer adopt the formula of following quality proportioning to be made:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, can arbitrary component deal adjust, or adjusts about 2 any of the above component deals difference, and the described dampening foams material by adopting above-mentioned formula to make, erasure effect is improved substantially.
The invention has the beneficial effects as follows: by adopting advanced composite material (ACM) to be made, its performance significantly improves.
One, the impeller of injection mo(u)lding, it is leaf accurately, and Leaf positional distribution is uniform, improves the efficiency of ventilation blower, it is to avoid because of the pneumatic imbalance that foozle causes; Owing to impeller weight alleviates significantly, its rotary inertia is little, reduces electric motor starting electric current, alleviates motor bearings load, extends bearing service life.
Two, main body double-layer barrel pastes the design of elastomeric material, utilizes the supporting way of face veneer, it is achieved the shell body effective cladding to inner housing, elastomeric layer is more thick, and soundproof effect is more good.
Three, the interior machine barrel of internal layer cylinder and internal layer cylinder, integral molded plastic molding, its good manufacturability, save labour turnover; Inside and outside layer cylinder all adopts composite to make, and makes the weight of main body significantly alleviate.
Four, the high porosity of air inlet deafener foams plastic material and the uniform property of the solid of pore, give its excellent acoustical behavior, and not only acoustic absorptivity is high, and applicable band wide ranges also has the feature such as easy processing, pollution-free, dust-fast, humidity simultaneously.
Five, booster is to split to go into the well, and down-hole re-assemblies, anchor ear connected mode, it is possible to achieve the fast assembling-disassembling of blower fan, and after fractionation, into and out of air port deafener very gently, two people just can easily lift, and main body is also relatively very light, convenient carrying, installation.
Six, utilizing the good noise reduction of plastics, sound insulation, damping performance, the steel blower fan of the overall noise level ratio of all-plastic booster has greatly improved.
Meanwhile, structure is optimized design, to reaching purpose efficient, low noise, light weight. It is mainly used for the ventilation in mine, tunnel etc., creates good working environment for safety in production.
Accompanying drawing explanation
Fig. 1 is the structural representation of single-motor double impeller booster;
Fig. 2 is the sectional structure schematic diagram of air inlet deafener;
The left view that Fig. 3 is Fig. 2 partly cuts open structural representation;
Fig. 4 is the sectional structure schematic diagram of double-layer mainframe shell;
Fig. 5 is the left view structural representation of Fig. 4;
Fig. 6 is the half section structural representation of double-layer mainframe shell;
Fig. 7 is the left view structural representation of Fig. 6;
Fig. 8 is the structural representation of air outlet deafener;
Fig. 9 is the right TV structure schematic diagram of Fig. 8;
Figure 10 is the structural representation of plastic motor;
Figure 11 is the left view structural representation of Figure 10.
In Fig. 1: 1-air inlet deafener, 2-one stage impeller, 3-main body, 4-sencond stage impeller, 5-anchor ear, 6-air outlet deafener;
Air inlet acoustic filter shown in Fig. 2: 7-the first flange, 8-afflux cylinder, 9-first support, 10-the first taper cone barrel, 11-plastic uptake fair water cone, 12-the first urceolus, 13-urceolus dampening foams layer, 14-inner core outer layer dampening foams layer, 15-inner core internal layer dampening foams layer, 16-the first taper reflecting plate, 17-the first inner core, 18-the first arc reflection plate, 19-the second urceolus, 20-outer end dampening foams layer, 21-the first cover plate;
Machine barrel, 28-stator fixing inserts, 29-junction box seat, 30-wire barrel, 31-base in main body shown in Fig. 4: 22-the second flange, 23-the 3rd urceolus, 24-elastomeric layer, 25-the second inner core, 26-the first stator, 27-;
Main body shown in Fig. 6: 33-end cap, 35-rotor, 36-stator, 2-one stage impeller, 4-sencond stage impeller, 34-bearing, fixed sleeve part 373839;
Silencer for air outlet shown in Fig. 8: 40-three-flange, 41-rear guide vane, 42-baffle, 43-the 3rd internal layer cylinder, 44-elastomeric material, 45-e a fourth external layer cylinder;
Machine barrel, 28-stator fixing inserts, 30-wire barrel, 33-end cap, 34-bearing, 35-motor rotor, 36-stator, fixed sleeve part 373839 in plastic motor shown in Figure 10: 25-the second internal layer cylinder, 26-the first stator, 27-.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further details.
Embodiment 1, the present invention is made up of suction muffler 1, one stage impeller 2, main body 3, sencond stage impeller 4, anchor ear 5 and exit silencer 6, wherein suction muffler 1 is quickly connected each through anchor ear 5 with main body 3, main body 3 and exit silencer 6, forms an entirety; The effect of air inlet deafener 1 is by distinguished and admirable steady importing draught fan impeller, absorbs simultaneously and isolates most radiated noise; One stage impeller 2, main body 3, sencond stage impeller 4 are the main bodys of blower fan, by the rotation of driven by motor impeller, convert electrical energy into mechanical energy and are then converted to wind energy; The effect of anchor ear 5 is quickly to connect air inlet deafener 1 and main body 3, and main body 3 and air outlet deafener 6; The effect of air outlet deafener 6 is the rotary airflow rectification will accelerated through impeller, isolation, consumption rotate the discrete noise produced, meanwhile, for connecting the air duct fabric of conveying gas, between main body, air inlet deafener, air outlet deafener, introduce anchor ear and connect. Due to local fan, it mostly is fractionation, fragmented transport, adopts anchor ear to connect, it is possible to achieve quickly non-bolted joint. Consult Fig. 1 to Fig. 9.
Embodiment 2, the suction muffler of the present invention is made up of collector-shoe gear and silencer mechanism, current collector is cone tubular structure, deafener is straight-tube shape, the end that is relatively large in diameter of current collector cooperates with deafener fixing connection, and current collector includes afflux cylinder 8, first and supports the 9, first taper cone barrel 10, plastic uptake fair water cone 11; Fixed afflux cylinder 8 in first taper cone barrel 10, the fixed plastic uptake fair water cone 11 in axial line position in afflux cylinder 8, between afflux cylinder 8 and plastic uptake fair water cone 11, it is provided with the first support 9; First taper cone barrel 10 forms double-decker with afflux cylinder 8, is effectively increased the soundproof effect of afflux section; Acoustic filter includes the first urceolus 12, the first inner core the 17, second urceolus 19 and the first taper reflecting plate 16, and the first urceolus 12 and the first inner core 17 are co-axially mounted, and adopts the first arc reflection plate 18 mutually to connect firmly between the first urceolus 12 and the second urceolus 19; Second urceolus 19 outer end sets the first cover plate 21, coordinates lining dress outer end dampening foams layer 20 in the space between the second urceolus 19 with the first cover plate 21; Wall liner dress urceolus dampening foams layer 13 in the first urceolus 12, it is respectively arranged with inner core internal layer dampening foams layer 15 and inner core outer layer dampening foams layer 14 in inwall and the periphery of the first inner core 17, a support arrangement it is installed with between the first urceolus 12 and the first inner core 17 or between urceolus dampening foams layer 13 and inner core outer layer dampening foams layer 14, noise reduction principle is many sound-silencing measures modular design, initially with annular noise reduction section, multiring structure can effectively split air-flow, increases noise reduction area; Secondly adopt side air inlet structure, stop radiated noise straightline propagation, be again provided with taper reflecting plate and along the uniform arc reflection plate of surrounding at air inlet, by the reflection to sound wave, stop radiated noise outwards to be propagated.
In processing technology: the first flange 7, afflux cylinder 8, first support the 9, first taper cone barrel 10 and plastic uptake fair water cone 11 is integral by ultrasonic bonding; Being inserted in along the internal diameter of the first taper reflecting plate 16 by n the first arc reflection plate, then all even first urceolus the 12, second urceolus the 19, first inner core 17 is respectively welded; Dampening foams body 13,14,15,20 is pasted onto diagram position, then welds the first cover plate 21 and the first taper reflecting plate 16, finally two parts are welded together. Consult Fig. 1 to Fig. 9, all the other same above-described embodiments.
Embodiment 3, the main body of the present invention includes second inner core the 25, first stator 26, interior machine barrel 27, the fixing inserts 28 of stator, end cap 33, bearing 34 and motor rotor 35, stator 36 and motor shaft; Install end cap 33 at interior machine barrel 27 two ends, bearing 34 is arranged on the two ends of stator 36 axle, and its outer ring is arranged on end cap 33, and in order to support motor rotor 35, stator 36 engagement sleeves of belt coil is contained in the fixing inserts 28 of stator; Base plate is welded on main body 3, and base is provided with hole for hoist; Suspension for down-hole is installed.
Main body 3 is the main body of ventilation blower, and the effect of its outer layer barrel is support, fixing internal layer cylinder, connects into and out of air port deafener; The effect of its internal layer cylinder is, within it pacifies the stator 36 of motorized parts end cap 33, rotor 35, belt coil on machine barrel 27, and wherein end cap 33 is also injection molding part, and its injected plastics material is identical with internal layer cylinder material. Forming a less radial clearance between outer rim and the second internal layer cylinder 25 of blade, therefore, the rotary motion of blade could be oppressed air and be moved toward the direction. Consult Fig. 1 to Fig. 9, all the other same above-described embodiments.
Embodiment 4, the one stage impeller 2 of the present invention and sencond stage impeller 4 direct connection respectively is on the motor shaft of motor rotor 35. Consult Fig. 1 to Fig. 9, all the other same above-described embodiments.
Embodiment 5, the silencer for air outlet of the present invention includes e a fourth external layer cylinder the 45, the 3rd internal layer cylinder 43, rear guide vane 41, baffle 42 and elastomeric layer 44; It is filled with elastomeric layer 44 at e a fourth external layer cylinder 45 and the 3rd internal layer cylinder 43, fixed rear guide vane 41 between the 3rd internal layer cylinder 43 and baffle 42, rear guide vane 41 had both had supporting role, had again wind-guiding effect; Described e a fourth external layer cylinder the 45, the 3rd internal layer cylinder 43, rear guide vane 41, baffle 42 and elastomeric layer 44 all adopt plastic production to form. Consult Fig. 1 to Fig. 9, all the other same above-described embodiments.
Embodiment 6, the main body 3 of the present invention adopts double-layer mainframe shell, and it includes the 3rd urceolus 23, elastomeric layer the 24, second inner core 25 and interior machine barrel 27; Between the 3rd urceolus 23 and the second inner core 25, it is filled with elastomeric layer 24, and elastomeric layer 24 is fixedly connected with the outer wall of the 3rd urceolus 23 inwall and the second inner core 25 respectively; Interior machine barrel 27 is sleeved in the second inner core 25, is installed with first stator 26, the both wind-guiding of more than 3 between interior machine barrel 27 and the second inner core 25, and internally machine barrel 27 is played a supporting role again; Interior machine barrel 27 is sleeved on the central axis in the second inner core 25; The wire barrel 30 arranged between the second inner core 25 and interior machine barrel 27, is correspondingly arranged on wiring through hole respectively in the position of the corresponding wire barrel 30 of the 3rd urceolus 23, elastomeric layer 24 second inner core 25 and interior machine barrel 27; The inwall of interior machine barrel 27 is embedded with the fixing inserts 28 of stator; 3rd top, urceolus 23 periphery is provided with junction box seat 29, and two ends are provided with the second flange 22, and bottom, periphery is provided with base 31; Described second flange the 22, the 3rd urceolus the 23, second inner core the 25, first stator 26, interior machine barrel 27, junction box seat 29, wire barrel 30 and base 31 are all adopted made of plastic. Consult Fig. 1 to Fig. 9, all the other same above-described embodiments.
Embodiment 7, the present invention includes the main frame internal layer cylinder of first inner core the 17, second inner core 25 and interior machine barrel 27 and adopts the formula composite of following quality proportioning to be made:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, namely each component adjusting range of above-mentioned formula proportion is �� 5%, can arbitrary component deal adjust, or 2 any of the above component deal left and right respectively adjust, described main frame internal layer cylinder is by adopting above-mentioned formula composite to be made, and its performance significantly improves.
Embodiment 8, the present invention includes the outer layer barrel of first urceolus the 12, second urceolus the 19, the 3rd urceolus 23, junction box seat 29, wire barrel 30 and base 31 and adopts the formula composite of following quality proportioning to be made into and out of air port muffler shell:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, namely each component adjusting range of above-mentioned formula proportion is �� 5%, can arbitrary component deal adjust, or 2 any of the above component deal left and right respectively adjust, including first urceolus the 12, second urceolus the 19, the 3rd urceolus 23, junction box seat 29, wire barrel 30 and base 31 outer layer barrel and into and out of air port muffler shell by adopt above-mentioned formula composite be made, its performance significantly improves.
Embodiment 9, any dampening foams layer of the present invention or elastomeric layer adopt the formula of following quality proportioning to be made:
The each component of above-mentioned formula proportion can adjust the interior left and right of 5% scope, namely each component adjusting range of above-mentioned formula proportion is �� 5%, can arbitrary component deal adjust within 5%, or 2 any of the above component deal left and right respectively adjust within 5%, by the dampening foams material adopting above-mentioned formula to make, erasure effect is improved substantially.
Above-mentioned any dampening foams layer includes urceolus dampening foams layer 13, inner core outer layer dampening foams layer 14, inner core internal layer dampening foams layer 15, outer end dampening foams layer 20 etc.; Above-mentioned any elastomeric layer includes elastomeric layer 24, elastomeric material 44 etc. Both can use above-mentioned formula materials, it is possible to individually respectively one of any use simultaneously, also can any combination use.
By adopting above-mentioned advanced composite material (ACM) to be made, its performance significantly improves.
One, the impeller of injection mo(u)lding, it is leaf accurately, and Leaf positional distribution is uniform, improves the efficiency of ventilation blower, it is to avoid because of the pneumatic imbalance that foozle causes; Owing to impeller weight alleviates significantly, its rotary inertia is little, reduces electric motor starting electric current, alleviates motor bearings load, extends bearing service life.
Two, main body double-layer barrel pastes the design of elastomeric material, utilizes the supporting way of face veneer, it is achieved the shell body effective cladding to inner housing, elastomeric layer is more thick, and soundproof effect is more good.
Three, the interior machine barrel of internal layer cylinder and internal layer cylinder, integral molded plastic molding, its good manufacturability, save labour turnover; Inside and outside layer cylinder all adopts composite to make, and makes the weight of main body significantly alleviate.
Four, the high porosity of air inlet deafener foams plastic material and the uniform property of the solid of pore, give its excellent acoustical behavior, and not only acoustic absorptivity is high, and applicable band wide ranges also has the feature such as easy processing, pollution-free, dust-fast, humidity simultaneously.
Five, booster is to split to go into the well, and down-hole re-assemblies, anchor ear connected mode, it is possible to achieve the fast assembling-disassembling of blower fan, and after fractionation, into and out of air port deafener very gently, two people just can easily lift, and main body is also relatively very light, convenient carrying, installation.
Six, utilizing the good noise reduction of plastics, sound insulation, damping performance, the steel blower fan of the overall noise level ratio of all-plastic booster has greatly improved.
Meanwhile, structure is optimized design, to reaching purpose efficient, low noise, light weight.