CN1029913C - Mixed flow dust removing fan - Google Patents
Mixed flow dust removing fan Download PDFInfo
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- CN1029913C CN1029913C CN 90109881 CN90109881A CN1029913C CN 1029913 C CN1029913 C CN 1029913C CN 90109881 CN90109881 CN 90109881 CN 90109881 A CN90109881 A CN 90109881A CN 1029913 C CN1029913 C CN 1029913C
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- 239000000428 dust Substances 0.000 title claims abstract description 63
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- 230000005540 biological transmission Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 5
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- 238000009423 ventilation Methods 0.000 description 7
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- 239000002184 metal Substances 0.000 description 2
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- 238000000746 purification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
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Abstract
The invention belongs to the technical field of separation and mixing and relates to a dust removal fan. At the outlet of the mixed-flow (including diagonal-flow) moving blade (2), the airflow has very high rotating speed and can generate centrifugal force ten times greater than that of a common cyclone dust collector. The conical surface of the rear conical disc (10) can enable the air flow of the central part to enter the periphery. The invention directly utilizes the aerodynamic characteristics to separate the airborne dust and collect the airborne dust by the dust collecting ring (4) to realize the dust removing function. The mixed flow dust removal fan has the advantages that the technical route of adding the fan by using a dust removal device is abandoned, the developed mixed flow dust removal fan is simple in structure, the noise is lower than 90dB (A), the dust removal efficiency is higher than 98%, and the air volume and the air pressure are not influenced. The dry or wet mode of operation is optional.
Description
The invention belongs to and separate and the hybrid technology field.
The present invention relates to a kind of ventilation blower that has dedusting function concurrently.It is to have on the various mixed-flow movable vane wheels novel fan of (comprising diagonal flow type movable vane wheel), take the lead in developing its potential dedusting function, promptly utilize the aerodynamic characteristics of air-flow in this blower fan, efficiently gas in the air-flow is carried dust separation, and a kind of fluid machinery that has ventilation and dedusting dual-use function concurrently of invention.
Ventilation blower is according to the structure and the working method of movable vane wheel, is divided into centrifugal, axial-flow type and mixed-flow (containing diagonal flow type) three classes basically, and preceding two class blower fans all once were utilized to make " dedusting fan " in prior art.Mixed flow fan is mainly used in the mining auxiliary fan of design abroad, and this blower fan all of no use is made the dedusting fan that has dedusting and ventilation function concurrently both at home and abroad.
In prior art, so-called dedusting fan usually is that additional dedusting structure miscellaneous and even complete dust arrester come down to the combination of blower fan and dust arrester to finish its dedusting function on blower fan.Therefore still there are the intrinsic separately pluses and minuses of employed blower fan and dust arrester in this dedusting fan more complicated structurally on performance, is difficult to large-scale popularization so far and uses.For example dedusting fan complex structure, the resistance made from axial fan is big, noise is big, and the centrifugal dedusting fan volume is big, the efficiency of dust collection of respirable dust is low etc.And these two kinds of dedusting fans all adopt wet dedusting.These shortcomings just become serious problems in some occasion such as mine, even lose use value.Miners are difficult to stand the stimulation of noise, would rather be without blower fans, thus produce the new problem of labour protection.Relevant list of references is as follows:
1, wet cyclone dust-removing blower fan
" industrial anti-dust handbook (P743-744) labor and personnel publishing house publishes, in October, 1989 Beijing front page.
2, centrifugal dedusting ventilating fan
" metallurgical security " № 2, P47-48 in 1976
3、Engart Dust Extractors Principle of Operation
Product description
4、Davidson Wine Fans
1220 mm Dia Weter Nixed Flow Eooster
Product description
5, XF4525-12 diagonal flow fan
No. the 26th, Chinese invention patent
Dedusting fan is in order to realize dual-use, reduce complexity and the occupation of land used, but in the existing technology, be the basic load of blower fan all with additional dedusting structure or device, has bigger drag losses, the effective wind rate of blower fan is relatively just little, so energy consumption is big, equipment heaviness, volume are big, noise is also big.Existing dedusting fan can not be selected best dedusting method-dry type or wet type according to purifying Properties of Objects and operating characteristic based on wet type, can not use under high temperature or worst cold case.
Purpose of the present invention is exactly the problem that exists in the above-mentioned existing technology for solving, develop a kind of industrial suitable miniaturization dedusting fan, it should be that air quantity is big, blast is high, noise is low, efficiency of dust collection is high, simple in structure, easy to manufacture, cost is low integrates the novel device that ventilates with the dedusting dual-use function.Obviously, can not achieve the goal with common design philosophy.The present invention has abandoned the notion of " combined type ", has selected mixed flow fan development according to goal of the invention, because its air quantity is big, blast is high, efficient is high and noise is low, suits the requirements substantially.Discover that the aerodynamic characteristics of air-flow has the ability that potential separation gas carries dust in the mixed flow fan, very worth utilization.Be that the air-flow that has high winding speed (being air-flow is made spiralling along wall within the blower housing speed) and core after air is taken turns by the mixed-flow movable vane can flow to the border.These two characteristics are that axial fan is not available, because the winding speed that axial fan produces air-flow is low, be not enough to form the needed centrifugal force of separation dust (particularly fine dust), and its flow spiral shape is cylindric when advancing, the center can not fully mixing with the air-flow border oozed, and causes that dust is difficult for separated in the core air-flow.And the air-flow of mixed-flow movable vane wheel force feed is the conulite shape when helical form is advanced, and the air-flow of core can both flow to the border, is highly advantageous to carry dust with its powerful centrifugal force separation gas.According to this aerodynamic characteristics of air-flow in the flow-mixing blower fan, development cost invention-" mixed flow fan for dedusting ".The dedusting function of this machine is determined by the technical characterictic of self fully, does not need additional complicated dust arrester, has finished the invention task.
The present invention as shown in drawings.
Fig. 1, be vertically to face cross-sectional view;
Fig. 2, be blower fan mixed-flow movable vane wheel construction enlarged drawing;
Fig. 3, be the distressed structure schematic diagram of a kind of blower housing, movable vane wheel;
The control of dust ring sectional structural map of Fig. 4, another kind of structure.
Mixed flow fan for dedusting basic structure form such as Fig. 1.By current collector (1), mixed flow movable vane wheel (2), cylindrical housing (3), control of dust ring (4), guide vane (5), motor (6), streamlined shell (7), water pipe (11), sprayer (12) and dust flue formations such as (13).The mutual configuration of each parts as shown in Figure 1.The blower fan front end (refers to the air intake vent place, the place, air port is pointed out in the rear end, establish water inlet pipe (11) and sprayer (12) on the current collector (1) down together), press water footpath sprayer (12) flows to movable vane wheel (2) spraying with the wind, be subjected to movable vane wheel (2) centrifugal action, form superfine droplet behind the secondary-atomizing, be beneficial to the moistening of dust and capture with very big kinetic energy.This cover water supply installation is is only just installed and used when this machine adopts the wet dust removal mode to work.The blower fan entrance point is the current collector (1) with streamline-shaped, connects cylindrical housing (3) thereafter.Movable vane wheel (2) is the serrated end of current collector (1) then, and is installed on motor (6) axle of back.The mixed-flow movable vane of taper wheel (2) conehead is towards air inlet, it by motor (6) with direct kind of drive driven rotary.When motor (6) is installed, should make its axis coaxial with the blower fan central axis.Streamlined shell (7) is located at movable vane wheel (2) afterwards, is enclosed within the outside of motor (6), and with the motor frame fixed electrical machinery (6) of setting wherein.Between streamlined shell (7) and the blower housing (3), be welded with several pieces guide vanes (5) of the arranged radially that is uniformly distributed along the circumference,, as the fairing that curls up air-flow, make output gas flow steady simultaneously with support housing (7).Between mixed-flow movable vane wheel (2) and the guide vane (5), be provided with control of dust ring (4), it is an annulus that the metal material with " L " tee section is made.The two sides of this angle type ring form two orthogonal annulus on the same annulus, the ring external diameter of its side radially equals the internal diameter of cylindrical housing (3), and vertical welding is on the inner face of shell (3), the ring of an axial side should be concentric circles with the blower fan cylindrical housing, and takes turns (2) side towards the movable vane of blower fan.When the installation site of control of dust ring (4) and height dimension should make the conical surface of air-flow back awl dish (10) in movable vane wheel (2) flow out, can all enter in the scope of control of dust ring (4) control, promptly square after the awl dish conical surface extended line of back, to guarantee dust collection effect, satisfy the requirement of the through-flow section of blower fan simultaneously.Control of dust ring (4) also can adopt another kind of version, as Fig. 4.The i.e. position that on cylindrical housing (3), the control of dust ring should be installed, one section groove shape annulus is gone in grafting, with the bottom land limit is the ring cylindrical, the ring internal diameter should equal the internal diameter of shell (3), the forward and backward two ends of groove shape annulus are connected with the cylindrical housing (3) of its front and back, are right after guide vane (5) afterwards.Bottom in blower housing (3) is opened short groove vertically, establishes dust flue (13), and this groove is communicated with control of dust ring (4).Enter the movable vane wheel (2) of rotation at a high speed when dust-contained airflow after, promptly becoming conical surface eddy flow flows, after leaving back awl dish (10), air-flow not only travels forward but also do to curl up at a high speed motion along blower housing (3) inwall, form powerful centrifugal force, will the dust great get rid of to outer casing inner wall and separated, and collect by control of dust ring (4) and to fall into dust flue (13) than air ratio, outside the final discharge machine, the dust laden air by blower fan is purified.Clean air forms smooth air and exports from the blower fan port of export through guide vane (5) rectification.
According to the service condition difference, complete machine or parts are available metal or the manufacturing of macromolecular compound material all.In case of necessity can be at metal surface coating anticorrosive coat.
Fig. 2 shows that the mixed-flow movable vane wheel (2) among the present invention is to be made of inner cone dish (8), blade (9) and back awl dish (10).The conical surface tapering of inner cone dish should be less than back awl dish, and the tapering size of awl dish depends on the blast of design, and both are proportionate; Interval between two awl dishes is the height of blade (9), depends on the air quantity of design, and both also are proportionate.The blade profile of blade (9) can be arc plate shape or airfoil, is good with the latter, and each blade (9) all is uniformly distributed along the circumference between the interior male cone (strobilus masculinus) of forward and backward awl dish with certain established angle.Mixed-flow movable vane wheel (2) can be that welded unit also can be a cast construction, and is easy to process than diagonal flow type movable vane wheel.Keep away the gap (δ that sets between the face in the trailing edge of inner cone dish (7) and the blower housing (3)
1) be in order to prevent that movable vane wheel (2) and shell (3) from rubbing, and make both cooperations be easy to realization.
Fig. 3 is the embodiment of a kind of modification structures of the present invention.Inner cone dish (7) province that is about in the mixed-flow movable vane wheel (2) omits, and according to the outer side edges of blade (9) along the conicity that is with the blower fan axis, with the corresponding part of blower housing (3) front end, also make tapered cylinder (11) with tapering, need to keep the two that safety clearance (δ is arranged
2), with anti-friction.The characteristics of this type are impeller (2) designs simplifications, but shell processing and assembling are all complicated.
The present invention-mixed flow fan for dedusting, adopted mixed-flow movable vane wheel (2), air-flow is flowed along the conical surface, thus can have the big air quantity of high blast, low noise and the axial fan of centrifugal fan, the advantage of small size concurrently, simpler, with low cost than the manufacturing of diagonal flow fan complete machine.Owing to, not only simplify the structure only with one-level mixed-flow movable vane wheel (2), body is little light, and its blast of producing can reach the effect of axial fan two-stage movable vane wheel.So just reduce the loss of one-level water conservancy diversion, improved fan efficiency.Mensuration shows that noise of the present invention is lower than 90dB(A); Do not have in the blast characteristic curve in " hump district ", so blast changes steadily when air quantity changes, performance is better than common axial fan greatly.More simple in structure than the axial fan (for example Chinese patent CN86105014A) that guide ring (or claim current stabilization ring) is set, make with safeguard easy.
Two kinds of functions of ventilation that the present invention possessed and dedusting are finished by one-level mixed-flow movable vane wheel (2).Aspect dedusting, only be aided with control of dust ring (4) and gather dust.It utilizes directly that mixed-flow movable vane wheel (2) exit produces the strong air-flow that curls up, the gas that the huge centrifugal force that is had is isolated in the air-flow carries dust, it is higher more than 3 times than the tangential velocity of eddy flow mechanism inlet air flow in the common cyclone dust, the centrifugal force that dust is obtained is big more than 10 times, so dust removing effects is splendid, especially fine dust there is better effect, is better than cyclone dust.Air-flow at the motor-driven impeller force feed of this class prior art apoplexy is always imported earlier deduster again after the guide vane rectification, make the air-flow rotation produce centrifugal force once again by eddy flow mechanism then, realizes that dirt, gas separate, and its drag losses reaches about 1000Pa.Increased energy consumption, reduced the processing air quantity, the present invention has overcome these defectives.
The present invention is provided with the water supply spraying system when needed, can select the working method of dry method or wet method according to dust characteristic and system condition, and its dust purification rate all is higher than cyclone dust.
In sum, the present invention takes the lead in utilizing dexterously in the blower fan original harmful winding speed that curls up air-flow to remove to separate gas and carries dust, make blower fan have dedusting function concurrently after, almost do not increase resistance, made full use of energy, improve the efficient of system greatly.The present invention organically combines ventilation, dedusting and noise elimination three functions, has obtained good techno-economic effect.It is in mine working face dust removal by ventilation, and technical fields such as boiler smoke improvement and industrial dusty gas purification all have wide practical use.
Claims (3)
1, a kind of mixed flow fan for dedusting of cleaning dusty air of holding concurrently that is used to ventilate, it is equipped with water inlet pipe (11) and sprayer (12) on current collector (1), (when dry dust removal, can not installing) yet, directly with cylindrical housing (3) link to each other thereafter, the serrated end of current collector (1) is and then installed mixed-flow movable vane wheel (2), directly transmission of axle by motor (6), motor (6) is installed on the interior motor frame of streamlined shell (7), streamlined shell (7) is by along its circumference uniform distribution, several pieces guide vanes (5) of arranged radially are fixed on the cylindrical housing (3), the bottom slot of shell is provided with dust flue (13), this groove directly is communicated with the interior control of dust ring (4) of machine, it is characterized in that the mixed-flow movable vane wheel (2) that adopts is by inner cone dish (8), back awl dish (10) is all pressed identical established angle with each blade, the multi-disc blade (9) of circumference uniform distribution between the interior male cone (strobilus masculinus) of two awl dishes along two awl dishes formed, the blade profile of blade (9) can be arc plate shape or airfoil, the inwall upper edge cross-section location of cylindrical housing (3) is provided with control of dust ring (4), it is arranged in after the conical surface extended line of mixed-flow movable vane wheel (2) back awl dishes (10) just on axial location, and near being connected to guide vane (5);
2, mixed flow fan for dedusting as claimed in claim 1, it is characterized in that control of dust ring (4) is " angle type " annulus of being made by the metal material with " L " type section configuration, the two sides of " angle type " ring form two orthogonal annulus on the same annulus, its radially the external diameter of side ring equal the internal diameter of cylindrical housing (3), and vertically be welded on the shell (3), axially side ring and shell (3) are concentric circles, and towards the fans entrance end;
3, mixed flow fan for dedusting as claimed in claim 1, it is characterized in that control of dust ring (4) can be another kind of version, promptly on cylindrical housing (3), the position of control of dust ring (4) should be installed, one section groove shape annulus is gone in grafting, with the bottom land limit is the ring cylindrical, and the ring internal diameter equals the internal diameter of shell (3), and the forward and backward both ends of the surface of groove shape annulus are connected with its forward and backward cylindrical housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109881 CN1029913C (en) | 1990-12-14 | 1990-12-14 | Mixed flow dust removing fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109881 CN1029913C (en) | 1990-12-14 | 1990-12-14 | Mixed flow dust removing fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1053013A CN1053013A (en) | 1991-07-17 |
| CN1029913C true CN1029913C (en) | 1995-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90109881 Expired - Fee Related CN1029913C (en) | 1990-12-14 | 1990-12-14 | Mixed flow dust removing fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029913C (en) |
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| CN104534494B (en) * | 2014-11-20 | 2017-01-25 | 陈乾新 | Mixed flow fan type integrated dust remover |
| CN107158809A (en) * | 2016-03-07 | 2017-09-15 | 南洋理工大学 | Particulate matter remover |
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| CN108953189A (en) * | 2018-07-20 | 2018-12-07 | 江苏瑞尔隆盛叶轮科技有限公司 | A kind of flow-mixing blower fan |
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| CN111282381B (en) * | 2020-04-24 | 2024-08-20 | 山东新阳光环保设备股份有限公司 | Double-stage sleeve-rotating wet dust-removing gas washer |
| CN113967328A (en) * | 2020-07-23 | 2022-01-25 | 中国人民解放军69007部队 | Novel high-pronucleus biochemical protection electric air-supply canister and application thereof |
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1990
- 1990-12-14 CN CN 90109881 patent/CN1029913C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1053013A (en) | 1991-07-17 |
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