CN104226068A - Two-stage cyclone dust-removing equipment - Google Patents
Two-stage cyclone dust-removing equipment Download PDFInfo
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- CN104226068A CN104226068A CN201410521350.2A CN201410521350A CN104226068A CN 104226068 A CN104226068 A CN 104226068A CN 201410521350 A CN201410521350 A CN 201410521350A CN 104226068 A CN104226068 A CN 104226068A
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Abstract
The invention discloses two-stage cyclone dust-removing equipment. The two-stage cyclone dust-removing equipment comprises a dust feeding device, a first-stage cyclone tube, a second-stage cyclone tube and a dust recycling device, wherein the first-stage cyclone tube is mounted at the top of the second-stage cyclone tube; a trumpet-shaped flow-guiding slot is mounted at the bottom of the first-stage cyclone tube; a gas overflowing pipe is mounted at the top of the first-stage cyclone tube; the dust feeding device comprises a tapered dust-collecting hood, a dust feeding pipe and a convergence pressure duct; one end of the dust feeding pipe stretches into the first-stage cyclone tube; the other end of the dust feeding pipe is communicated with the top of the tapered dust-collecting hood; one end of the convergence pressure duct is communicated with the dust feeding pipe; a pressure-supplementing inlet duct is arranged at the upper part of the second-stage cyclone tube; the dust recycling device comprises a dust-collecting barrel and a dust-inhibiting spray pipe; the dust-collecting barrel is mounted at the bottom of the second-stage cyclone tube; one end of the dust-inhibiting spray pipe stretches into the dust-collecting barrel; a spiral spray nozzle is mounted at the end part of the dust-inhibiting spray pipe. The two-stage cyclone dust-removing equipment realizes sealed dust collection and two-stage cyclone separation, can gather and collect dust at the same time, and is high in dust treatment efficiency.
Description
Technical field
The present invention relates to a kind of cleaner, especially relate to a kind of twin-stage rotational flow dust-removing equipment.
Background technology
One of important step of the treating flour dust Shi Xuan factory safety in production always of coal separation (ore deposit) factory, how to improve the trapping effect of dust and the dust removing effects of deduster, reduce the particle content in workshop, working healthily for staff provides a good environment, is technological difficulties and the emphasis of deduster research field always.The prerequisite of dedusting is the dust granules in maximum collection space, how to collect in source the key that dust granules is dust collection.The dedusting of effective implementation closed not only can collect dust granules from source, and can prevent dust in atmosphere disperse cause secondary dust to pollute.Current most dedusting method is all for wide area dedusting, and dust collection equipment generally all hangs in the air, just carries out depositing dust, not only add the load of cleaner, and equipment power dissipation is high, efficiency is low after in Dust Dispersion to air.Research at present for dust removal field mainly concentrates on the exploitation of dust suppressant and the design of deduster solid space, for dust treatment plant but few people's research of particular device.
The kind of the dust collection of extensive use is many at present, mainly contains mechanical type dust collection, Wet dust collector, cyclone type dust collection, bag type powder collector, filtering type dust collection and high-voltage electrostatic dust collection.Wherein, mechanical type dust collection makes it be difficult to use on a large scale because of shortcomings such as its energy consumption are high, efficiency is low; Wet dust collector, because of its easy sedimentating dust on tube wall, causes dust collection efficiency to decline; Cyclone type dust collection is applicable to the grit of collection more than 10 μm more, and when grit is less than 10 μm, dust collection efficiency sharply declines; Bag type powder collector and high-voltage electrostatic dust collection are all applicable to the collection of dried dust particle, and the environment dust collection effect larger for humidity significantly reduces; Filtering type dust collection can only collect the dust granules that granularity is greater than 10 μm, and the dust of coal separation (ore deposit) factory focuses mostly on-10 μm of grades.To sum up analyze, design is applicable to dry wet environment, and effectively to process and effect deduster high, low in energy consumption is the key of coal separation (ore deposit) factory dedusting by p-10 μm of grade dust in finite field.And at present, do not have a kind of complete effective cleaner can solve the problem of beamhouse's screening and disintegrating apparatus generation dust pollution in finite field.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of twin-stage rotational flow dust-removing equipment is provided, its structure is simple, reasonable in design and easy to use, effectively can solve high, the inefficient problem of existing cleaner power consumption, closed dedusting can be realized, from dust watershed management, avoid Dust Dispersion to produce injury to staff in atmosphere, simultaneously to the particle size range of dust and the humidity requirement of environment not high.
For achieving the above object, the technical solution used in the present invention is: a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: comprise dust feeding device, one-level whirl cylinder, secondary whirl cylinder and the device for recovering powder be arranged on bottom secondary whirl cylinder, described one-level whirl cylinder is arranged on the top of described secondary whirl cylinder, the bottom of described one-level whirl cylinder is positioned at described secondary whirl cylinder, bottom described one-level whirl cylinder, up-small and down-big horn-like guiding gutter is installed, the top of described one-level whirl cylinder is provided with gas overflowing pipe, the bottom of described gas overflowing pipe is stretched in one-level whirl cylinder, described dust feeding device comprises positive conial dust hood, dust feeding pipe and the pressure airduct that confluxes, one end of described dust feeding pipe is stretched in one-level whirl cylinder, the other end of described dust feeding pipe is communicated with the top of positive conial dust hood, the bottom of described positive conial dust hood is connected with vibrationproof connector, one end of the described pressure airduct that confluxes is communicated with dust feeding pipe and for being blown in one-level whirl cylinder by the dust in dust feeding pipe, the top of described secondary whirl cylinder is provided with the ftercompction blast pipe that one end is communicated with it, described device for recovering powder comprises dust collection cylinder and spray dust-arrest pipe, described dust collection cylinder is arranged on the bottom of described secondary whirl cylinder and is communicated with secondary whirl cylinder, one end of described spray dust-arrest pipe is passed the bottom of described secondary whirl cylinder and stretches in dust collection cylinder, the spray dust-arrest tube end stretched in dust collection cylinder is provided with spiral nozzle.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described one-level whirl cylinder is made up of upper cylindrical drum and lower inverted round stage cylinder, the height of described upper cylindrical drum is 1/2 ~ 3/4 of upper cylindrical drum internal diameter, angle between the conical surface of described lower inverted round stage cylinder and axis is 25 ° ~ 45 °, described gas overflowing pipe is arranged on the top of cylindrical drum, the bottom of described gas overflowing pipe is stretched in cylindrical drum, and one end of described dust feeding pipe is stretched in cylindrical drum.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described gas overflowing pipe is vertically arranged, described gas overflowing pipe and one-level whirl cylinder are tightly connected and can regulate the length stretched in one-level whirl cylinder, the shape of cross section of described gas overflowing pipe is circular, and the diameter of described gas overflowing pipe is 1/7 ~ 1/3 of upper cylindrical drum diameter.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, is characterized in that: the outer setting of described lower inverted round stage cylinder has helical form water conservancy diversion glazing bar, and the helical angle of described helical form water conservancy diversion glazing bar is 15 ° ~ 35 °.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described secondary whirl cylinder is by setting gradually from top to bottom and the air-blowing room be connected, spin chamber and dust underflow pipe composition, described one-level whirl cylinder is arranged on the top of air-blowing room, the bottom of described one-level whirl cylinder is positioned at air-blowing indoor, described dust collection cylinder is arranged on the bottom of dust underflow pipe and is communicated with dust underflow pipe, described ftercompction blast pipe is arranged on the top of air-blowing room, described spray dust-arrest pipe is through dust underflow pipe, the shape of described spin chamber is turbination, the shape of cross section of described air-blowing room and spin chamber is circle, the upper diameter of described air-blowing room is 1.6 ~ 3 times of upper cylindrical drum diameter, the diameter of described spin chamber is 1.2 ~ 1.5 times of upper cylindrical drum diameter.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described ftercompction blast pipe is horizontally disposed with, the inwall of described ftercompction blast pipe and one-level whirl cylinder is tangent, the quantity of described ftercompction blast pipe is two, two one-level whirl cylinders are symmetrical arranged, two ftercompction blast pipes are pipe and equal diameters, and the diameter of described ftercompction blast pipe is 1/8 ~ 1/4 of air-blowing room diameter.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described dust collection cylinder inner bottom part is provided with ring-like dirt filtrating screen, described spray dust-arrest pipe is through ring-like dirt filtrating screen, described spray dust-arrest pipe and dust underflow pipe are pipe, and the diameter of described spray dust-arrest pipe is 1/7 ~ 1/5 of dust underflow pipe diameter.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described horn-like guiding gutter is made up of upper cylindrical tube and lower conical tube, the diameter of described upper cylindrical tube is 1/3 ~ 1/2 of gas overflowing pipe diameter, and the angle between the conical surface of described lower conical tube and axis is 25 ° ~ 35 °.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described dust feeding pipe is horizontally disposed with, the inwall of described dust feeding pipe and one-level whirl cylinder is tangent.
Above-mentioned a kind of twin-stage rotational flow dust-removing equipment, it is characterized in that: described vibrationproof connector is made up of fixed head and rubber bellows, one end of described rubber bellows is connected with fixed head, the other end of described rubber bellows is connected with the lower end of positive conial dust hood, and the periphery of described fixed head has connecting hole.
The present invention compared with prior art has the following advantages:
1, structure of the present invention is simple, reasonable in design and use easy to operate.
2, dust treatment effeciency of the present invention is high, can realize the trapping to dust and collection simultaneously, efficiently solves existing dust arrester and there is the low problem for the treatment of effeciency, and then improve dust removing effects.
3, the present invention is directed to a large amount of dust that in the beamhouse of bargh, disintegrating apparatus produces, adopt airtight gathering dust, twin-stage cyclonic separation and trapping collecting action mechanical and hydraulic combined dust, twin-stage eddy flow is adopted to make dust granules experience twice eddy flow field, under the effect of twice centrifugal force, grain dust is separated, strengthens the centrifugation of this equipment to particle dust; The design of horn-like guiding gutter simultaneously, not only stabilize the interference at joining place of one-level eddy flow field and secondary rotary flow field and the short circuit of air-flow, and also specification has been carried out to the track of material in flow field, the particle be separated in one-level eddy flow factory is made directly to enter the outward turning flow field of secondary eddy flow, avoid the secondary separation interference that repeated isolation and flow field are caused separating particles, inner eddy flow gas column is inner through guiding gutter, make one-level eddy flow field, secondary rotary flow field gas inner prop form path, ensure that the steady and continuous of cleaner is run.
4, the design of the bipolar eddy flow of the present invention and the combination of spray dust-arrest can realize the collection to fine fraction dust, because the design is cyclone dust removal mode, therefore can adapt to the humidity range of 20% ~ 80%.
5, the present invention not only effectively can be applicable to coal (ore deposit) powder dedusting, and is also applicable in the dust Efficient Collection process of other industry science industries, and the scope of application is wide.
6, production cost of the present invention is low, and functional part is easy to production and processing, is convenient to promote the use of.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural representation that the present invention removes ftercompction blast pipe.
Fig. 4 is the structural representation of one-level whirl cylinder of the present invention.
Fig. 5 is the structural representation of the ring-like dirt filtrating screen of the present invention.
Description of reference numerals:
1-1-air-blowing room; 1-2-spin chamber; 2-one-level whirl cylinder;
2-1-upper cylindrical drum; 2-2-lower inverted round stage cylinder; 2-21-helical form water conservancy diversion glazing bar;
3-ftercompction blast pipe; 4-gas overflowing pipe; 5-1-spray dust-arrest pipe;
5-2-ring-like dirt filtrating screen; 5-3-dust collection cylinder; 6-11-fixed head;
6-111-connecting hole; 6-12-rubber bellows; 6-2-positive conial dust hood;
6-3-dust feeding pipe; 6-4-conflux pressure airduct; 7-dust underflow pipe;
8-horn-like guiding gutter; 9-spiral nozzle.
Detailed description of the invention
As shown in Figure 1 to Figure 3, the present invention includes dust feeding device, one-level whirl cylinder 2, secondary whirl cylinder and the device for recovering powder be arranged on bottom secondary whirl cylinder, described one-level whirl cylinder 2 is arranged on the top of described secondary whirl cylinder, the bottom of described one-level whirl cylinder 2 is positioned at described secondary whirl cylinder, bottom described one-level whirl cylinder 2, up-small and down-big horn-like guiding gutter 8 is installed, the top of described one-level whirl cylinder 2 is provided with gas overflowing pipe 4, the bottom of described gas overflowing pipe 4 is stretched in one-level whirl cylinder 2, described dust feeding device comprises positive conial dust hood 6-2, dust feeding pipe 6-3 and the pressure airduct 6-4 that confluxes, one end of described dust feeding pipe 6-3 is stretched in one-level whirl cylinder 2, the other end of described dust feeding pipe 6-3 is communicated with the top of positive conial dust hood 6-2, the bottom of described positive conial dust hood 6-2 is connected with vibrationproof connector, one end of the described pressure airduct 6-4 that confluxes is communicated with dust feeding pipe 6-3 and for being blown in one-level whirl cylinder 2 by the dust in dust feeding pipe 6-3, the top of described secondary whirl cylinder is provided with the ftercompction blast pipe 3 that one end is communicated with it, described device for recovering powder comprises dust collection cylinder 5-3 and spray dust-arrest pipe 5-1, described dust collection cylinder 5-3 is arranged on the bottom of described secondary whirl cylinder and is communicated with secondary whirl cylinder, one end of described spray dust-arrest pipe 5-1 is passed the bottom of described secondary whirl cylinder and stretches in dust collection cylinder 5-3, the spray dust-arrest pipe 5-1 end stretched in dust collection cylinder 5-3 is provided with spiral nozzle 9.
As shown in Figures 1 to 4, described one-level whirl cylinder 2 is made up of upper cylindrical drum 2-1 and lower inverted round stage cylinder 2-2, the height of described upper cylindrical drum 2-1 is 1/2 ~ 3/4 of upper cylindrical drum 2-1 internal diameter, angle between the conical surface of described lower inverted round stage cylinder 2-2 and axis is 25 ° ~ 45 °, described gas overflowing pipe 4 is arranged on the top of cylindrical drum 2-1, the bottom of described gas overflowing pipe 4 is stretched in cylindrical drum 2-1, and one end of described dust feeding pipe 6-3 is stretched in cylindrical drum 2-1.
As shown in Figure 1 to Figure 3, described gas overflowing pipe 4 is vertically arranged, described gas overflowing pipe 4 is tightly connected with one-level whirl cylinder 2 and can regulates the length stretched in one-level whirl cylinder 2, the length in one-level whirl cylinder 2 is stretched into by adjustments of gas discharger 4, come the amounts of particles carried secretly in Control strain gas and the granularity of overflowing particle, thus ensure the purity of final emergent gas, guarantee efficiency of dust collection.The shape of cross section of described gas overflowing pipe 4 is circular, and the diameter of described gas overflowing pipe 4 is 1/7 ~ 1/3 of upper cylindrical drum 2-1 diameter.
As shown in Figure 4; the outer setting of described lower inverted round stage cylinder 2-2 has helical form water conservancy diversion glazing bar 2-21; the helical angle of described helical form water conservancy diversion glazing bar 2-21 is 15 ° ~ 35 °; dust granules larger for granularity can be sent into rapidly the inwall of secondary whirl cylinder by one-level whirl cylinder 2; thinner dust granules can enter secondary whirl cylinder along the outer wall of helical form water conservancy diversion glazing bar 2-21 and carry out final dusting, makes grain dust carry out idetified separation in secondary rotary flow field by the centrifugal action of strengthening.
As shown in Figure 1 to Figure 3, described secondary whirl cylinder is by setting gradually from top to bottom and the air-blowing room 1-1 be connected, spin chamber 1-2 and dust underflow pipe 7 form, described one-level whirl cylinder 2 is arranged on the top of air-blowing room 1-1, the bottom of described one-level whirl cylinder 2 is positioned at air-blowing room 1-1, described dust collection cylinder 5-3 is arranged on the bottom of dust underflow pipe 7 and is communicated with dust underflow pipe 7, described ftercompction blast pipe 3 is arranged on the top of air-blowing room 1-1, described spray dust-arrest pipe 5-1 is through dust underflow pipe 7, the shape of described spin chamber 1-2 is turbination, the shape of cross section of described air-blowing room 1-1 and spin chamber 1-2 is circle, the upper diameter of described air-blowing room 1-1 is 1.6 ~ 3 times of upper cylindrical drum 2-1 diameter, the diameter of described spin chamber 1-2 is 1.2 ~ 1.5 times of upper cylindrical drum 2-1 diameter.Give the 1-1 air blast of air-blowing room by a high pressure positive blower through ftercompction blast pipe 3, effect makes up the pressure drop that one-level whirl cylinder 2 bottom formed, and provide power for the gas cyclone of secondary whirl cylinder, ensures the existence in secondary rotary flow field, rotational flow strengthening effect; Meanwhile, the helical form water conservancy diversion glazing bar 2-21 of lower inverted round stage cylinder 2-2 outside accelerates the formation in secondary rotary flow field.
As depicted in figs. 1 and 2, described ftercompction blast pipe 3 is horizontally disposed with, described ftercompction blast pipe 3 is tangent with the inwall of one-level whirl cylinder 2, the quantity of described ftercompction blast pipe 3 is two, two one-level whirl cylinders 2 are symmetrical arranged, two ftercompction blast pipes 3 are pipe and equal diameters, and the diameter of described ftercompction blast pipe 3 is 1/8 ~ 1/4 of air-blowing room 1-1 diameter; The ftercompction blast pipe 3 of same diameter can ensure that admission pressure is balanced, prevents eddy flow center from skew occurring and blocks the path of gas inner prop formation.
As shown in Fig. 1, Fig. 3 and Fig. 5, described dust collection cylinder 5-3 inner bottom part is provided with ring-like dirt filtrating screen 5-2, described spray dust-arrest pipe 5-1 is through ring-like dirt filtrating screen 5-2, described spray dust-arrest pipe 5-1 and dust underflow pipe 7 are pipe, and the diameter of described spray dust-arrest pipe 5-1 is 1/7 ~ 1/5 of dust underflow pipe 7 diameter.By the effect of spray dust-arrest pipe 5-1, spiral nozzle 9 can spray spiral taper moisture film, all descending dust granules all can be soaked by moisture film, effectively can reduce the surface free energy of grain dust, make grain dust occur reunite and prevent grain dust secondary ease from raising in dropping process; The weight that the dust granules occurring to reunite increases dust granules due to granularity also increases simultaneously, and the probability making dust granules pass ring-like dirt filtrating screen 5-2 sharply declines.Ring-like dirt filtrating screen 5-2 can pressure in venting dust collection cylinder 5-3, and equilibrium system external and internal pressure thus, for dust settling provides a control environment; Ring-like dirt filtrating screen 5-2 also can block the higher grain dust of part free energy, limits its effusion dust storage cylinder 5-3.
As shown in figures 1 and 3, described horn-like guiding gutter 8 is made up of upper cylindrical tube and lower conical tube, and the diameter of described upper cylindrical tube is 1/3 ~ 1/2 of gas overflowing pipe 4 diameter, and the angle between the conical surface of described lower conical tube and axis is 25 ° ~ 35 °.Horn-like guiding gutter 8 effectively can isolate up, descending air-flow, the flow field that elimination secondary whirl cylinder and one-level whirl cylinder 2 liang of eddy flow fields are formed in junction is disturbed with disorderly, also descending eddy flow and the gas short circuit of up eddy flow in one-level whirl cylinder 2 bottom can effectively be blocked, the lift of regular secondary whirl cylinder up inner eddy flow gas inner prop, is conducive to the stable operation of integral cyclone gas inner prop simultaneously.The effect that dust is subject to centrifugal force in one-level whirl cylinder 2 eddy flow field makes dust granules descending along barrel, and dust enters the outer buttons flow field of secondary whirl cylinder along horn-like guiding gutter 8 outside, is advanced into device for recovering powder under continuation.
As shown in figures 1 and 3, described dust feeding pipe 6-3 is horizontally disposed with, and the inwall of described dust feeding pipe 6-3 and one-level whirl cylinder 2 is tangent.
As shown in figures 1 and 3, described vibrationproof connector is made up of fixed head 6-11 and rubber bellows 6-12, one end of described rubber bellows 6-12 is connected with fixed head 6-11, the other end of described rubber bellows 6-12 is connected with the lower end of positive conial dust hood 6-2, the periphery of described fixed head 6-11 has connecting hole 6-111, by connecting hole 6-111, fixed head 6-11 is directly fixed on the vibrating mass of disintegrating machine or dry screen machine, positive conial dust hood 6-2 and disintegrating machine or dry screen machine Integral sealing are connected with and help form negative pressure at positive conial dust hood 6-2 lower zone, and then contribute to dust granules and enter one-level whirl cylinder 2.
In the present embodiment, the axis of described one-level whirl cylinder 2, secondary whirl cylinder, gas overflowing pipe 4, horn-like guiding gutter 8, spray dust-arrest pipe 5-1, ring-like dirt filtrating screen 5-2 and dust collection cylinder 5-3 coincides, in guarantee equipment, gas circuit forms path thus, and is conducive to the assembling of cleaner.
Operation principle of the present invention is: the coal dust that shattering process produces or mine dust carry out the restriction of flooding domain by positive conial dust hood 6-2, makes dust only in the bottom confined space diffusion of positive conial dust hood 6-2.The high speed air intake of pressure airduct 6-4 of confluxing defines the negative pressure region of positive conial dust hood 6-2 bottom, be conducive to dust granules because of negative pressure suction dust feeding pipe 6-3, design positive conial dust hood 6-2 to prevent from causing Dust Dispersion in space in dust recycling to wide area space, thus increase the difficulty of dust collection.Dust enters one-level whirl cylinder 2 by dust feeding pipe 6-3, carry out dust one-level cyclonic separation, vertically arrange due to gas overflowing pipe 4 and can the length stretched in one-level whirl cylinder 2 be regulated, thus the amounts of particles can carried secretly in Control strain gas and the granularity of overflowing particle, thus ensure the purity of final emergent gas, guarantee efficiency of dust collection.The dust of one-level whirl cylinder 2 is under the effect of strong centrifugal field; dust granules can enter secondary whirl cylinder under the effect of descending gas cyclone; outer wall due to one-level whirl cylinder 2 has helical form water conservancy diversion glazing bar 2-21, makes the air-flow in the 1-1 of air-blowing room accelerate eddy flow and is formed.Effect due to eddy flow makes one-level eddy flow and secondary rotary flow through journey to seamlessly transit, decrease one-level eddy flow and flow through with secondary rotary the flow perturbation produced when journey is connected.Simultaneously, due to horn-like guiding gutter 8 effectively up, the descending air-flow of isolation, eliminating the flow field that in secondary whirl cylinder and one-level whirl cylinder 2, two eddy flow fields are formed in junction disturbs with disorderly, also descending eddy flow and the gas short circuit of up eddy flow in one-level whirl cylinder 2 bottom can effectively be blocked, the lift of regular secondary whirl cylinder up inner eddy flow gas inner prop, is conducive to the stable operation of integral cyclone gas inner prop simultaneously.The effect that dust is subject to centrifugal force in one-level whirl cylinder 2 eddy flow field makes dust granules descending along barrel, and dust enters the outer buttons flow field of secondary whirl cylinder along horn-like guiding gutter 8 outside, is advanced into device for recovering powder under continuation.After dust enters device for recovering powder by dust underflow pipe 7, first a water mist dust fall process can be experienced, the spray dust-arrest pipe 5-1 being located at dust underflow pipe 7 bottom can spray spiral taper moisture film through spiral nozzle 9, all descending dust granules all can be soaked by moisture film, effectively can reduce the surface free energy of grain dust, make grain dust occur reunite and prevent grain dust secondary ease from raising in dropping process.The weight that the dust granules occurring to reunite increases dust granules due to granularity also increases simultaneously, and the probability making dust granules pass ring-like dirt filtrating screen 5-2 sharply declines.Utilize ring-like dirt filtrating screen 5-2 can pressure in venting dust collection cylinder 5-3, equilibrium system external and internal pressure thus, for dust settling provides a control environment.Ring-like dirt filtrating screen 5-2 also can block the higher grain dust of part free energy, limits its effusion dust collection cylinder 5-3, thus makes most of dust be inhibited, collect, complete dust collection and remove overall process.
In sum, in twin-stage rotational flow dust-removing equipment of the present invention, airtight dust feeding device ensure that the collection of dust granules from source, avoids dust loss to be the prerequisite of dust Efficient Collection.By the acting in conjunction of one-level whirl cylinder 2, secondary whirl cylinder, ftercompction blast pipe 3 and horn-like guiding gutter 8, defining bipolar eddy flow makes dust granules experience twice eddy flow field, under the effect of twice centrifugal force, grain dust is separated, strengthen the centrifugation of this equipment to particle dust, define the strong circulation eddy flow field of dust removal process, ensure that the separative efficiency of fine granular materials.Dust granules, by after device for recovering powder, makes the surface free energy of grain dust reduce under the effect of spray dust-arrest pipe 5-1, makes grain dust occur reunite and prevent grain dust secondary ease from raising in dropping process, thus completes whole dust removal process.
Below for adopting the application example of twin-stage rotational flow dust-removing equipment of the present invention:
The raw coal beamhouse choosing colliery, Ningxia is that research object carries out Dust Removal Experiment, as shown in the table, identical equipment working condition with identical carry out coal amount condition under, adopt twin-stage rotational flow dust-removing equipment of the present invention under humidity is 10% ~ 85% prerequisite, dust removal efficiency is up to 95.7%, improve 4.7% relative to common cyclone dust efficiency, particle concentration more common cyclone dust in space also has obvious decline.
Show the dedusting index that common cyclone dust is corresponding with twin-stage rotational flow dust-removing equipment of the present invention
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. a twin-stage rotational flow dust-removing equipment, it is characterized in that: comprise dust feeding device, one-level whirl cylinder (2), secondary whirl cylinder and the device for recovering powder be arranged on bottom secondary whirl cylinder, described one-level whirl cylinder (2) is arranged on the top of described secondary whirl cylinder, the bottom of described one-level whirl cylinder (2) is positioned at described secondary whirl cylinder, described one-level whirl cylinder (2) bottom is provided with up-small and down-big horn-like guiding gutter (8), the top of described one-level whirl cylinder (2) is provided with gas overflowing pipe (4), the bottom of described gas overflowing pipe (4) is stretched in one-level whirl cylinder (2), described dust feeding device comprises positive conial dust hood (6-2), dust feeding pipe (6-3) and the pressure airduct (6-4) that confluxes, one end of described dust feeding pipe (6-3) is stretched in one-level whirl cylinder (2), the other end of described dust feeding pipe (6-3) is communicated with the top of positive conial dust hood (6-2), the bottom of described positive conial dust hood (6-2) is connected with vibrationproof connector, one end of the described pressure airduct (6-4) that confluxes is communicated with dust feeding pipe (6-3) and for being blown in one-level whirl cylinder (2) by the dust in dust feeding pipe (6-3), the top of described secondary whirl cylinder is provided with the ftercompction blast pipe (3) that one end is communicated with it, described device for recovering powder comprises dust collection cylinder (5-3) and spray dust-arrest pipe (5-1), described dust collection cylinder (5-3) is arranged on the bottom of described secondary whirl cylinder and is communicated with secondary whirl cylinder, one end of described spray dust-arrest pipe (5-1) is passed the bottom of described secondary whirl cylinder and stretches in dust collection cylinder (5-3), spray dust-arrest pipe (5-1) end stretched in dust collection cylinder (5-3) is provided with spiral nozzle (9).
2. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 1, it is characterized in that: described one-level whirl cylinder (2) is made up of upper cylindrical drum (2-1) and lower inverted round stage cylinder (2-2), the height of described upper cylindrical drum (2-1) is 1/2 ~ 3/4 of upper cylindrical drum (2-1) internal diameter, angle between the conical surface of described lower inverted round stage cylinder (2-2) and axis is 25 ° ~ 45 °, described gas overflowing pipe (4) is arranged on the top of cylindrical drum (2-1), the bottom of described gas overflowing pipe (4) is stretched in cylindrical drum (2-1), one end of described dust feeding pipe (6-3) is stretched in cylindrical drum (2-1).
3. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 2, it is characterized in that: described gas overflowing pipe (4) is vertically arranged, described gas overflowing pipe (4) and one-level whirl cylinder (2) are tightly connected and can regulate the length stretched in one-level whirl cylinder (2), the shape of cross section of described gas overflowing pipe (4) is circular, and the diameter of described gas overflowing pipe (4) is 1/7 ~ 1/3 of upper cylindrical drum (2-1) diameter.
4. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 2, it is characterized in that: the outer setting of described lower inverted round stage cylinder (2-2) has helical form water conservancy diversion glazing bar (2-21), the helical angle of described helical form water conservancy diversion glazing bar (2-21) is 15 ° ~ 35 °.
5. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 2, it is characterized in that: described secondary whirl cylinder is by setting gradually from top to bottom and the air-blowing room (1-1) be connected, spin chamber (1-2) and dust underflow pipe (7) composition, described one-level whirl cylinder (2) is arranged on the top of air-blowing room (1-1), the bottom of described one-level whirl cylinder (2) is positioned at air-blowing room (1-1), described dust collection cylinder (5-3) is arranged on the bottom of dust underflow pipe (7) and is communicated with dust underflow pipe (7), described ftercompction blast pipe (3) is arranged on the top of air-blowing room (1-1), described spray dust-arrest pipe (5-1) is through dust underflow pipe (7), the shape of described spin chamber (1-2) is turbination, the shape of cross section of described air-blowing room (1-1) and spin chamber (1-2) is circle, the upper diameter of described air-blowing room (1-1) is 1.6 ~ 3 times of upper cylindrical drum (2-1) diameter, the diameter of described spin chamber (1-2) is 1.2 ~ 1.5 times of upper cylindrical drum (2-1) diameter.
6. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 5, it is characterized in that: described ftercompction blast pipe (3) is horizontally disposed with, described ftercompction blast pipe (3) is tangent with the inwall of one-level whirl cylinder (2), the quantity of described ftercompction blast pipe (3) is two, two one-level whirl cylinders (2) are symmetrical arranged, two ftercompction blast pipes (3) are pipe and equal diameters, and the diameter of described ftercompction blast pipe (3) is 1/8 ~ 1/4 of air-blowing room (1-1) diameter.
7. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 5, it is characterized in that: described dust collection cylinder (5-3) inner bottom part is provided with ring-like dirt filtrating screen (5-2), described spray dust-arrest pipe (5-1) is through ring-like dirt filtrating screen (5-2), described spray dust-arrest pipe (5-1) and dust underflow pipe (7) are pipe, and the diameter of described spray dust-arrest pipe (5-1) is 1/7 ~ 1/5 of dust underflow pipe (7) diameter.
8. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 3, it is characterized in that: described horn-like guiding gutter (8) is made up of upper cylindrical tube and lower conical tube, the diameter of described upper cylindrical tube is 1/3 ~ 1/2 of gas overflowing pipe (4) diameter, and the angle between the conical surface of described lower conical tube and axis is 25 ° ~ 35 °.
9. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 1, it is characterized in that: described dust feeding pipe (6-3) is horizontally disposed with, described dust feeding pipe (6-3) is tangent with the inwall of one-level whirl cylinder (2).
10. according to a kind of twin-stage rotational flow dust-removing equipment according to claim 1, it is characterized in that: described vibrationproof connector is made up of fixed head (6-11) and rubber bellows (6-12), one end of described rubber bellows (6-12) is connected with fixed head (6-11), the other end of described rubber bellows (6-12) is connected with the lower end of positive conial dust hood (6-2), and the periphery of described fixed head (6-11) has connecting hole (6-111).
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| CN112169524A (en) * | 2020-11-11 | 2021-01-05 | 贾开兴 | Internal spraying type rotational flow air purification device |
| CN112480978A (en) * | 2020-12-11 | 2021-03-12 | 四川德胜集团钒钛有限公司 | Blast furnace low-heat value gas treatment device |
| CN112480978B (en) * | 2020-12-11 | 2022-04-22 | 四川德胜集团钒钛有限公司 | Blast furnace low-heat value gas treatment device |
| CN117323772A (en) * | 2023-11-15 | 2024-01-02 | 东莞市升佳净水材料有限公司 | High-temperature waste gas treatment device and application method thereof |
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