CN105903304A - Energy-saving and environment-friendly dust removal system - Google Patents
Energy-saving and environment-friendly dust removal system Download PDFInfo
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- CN105903304A CN105903304A CN201610427225.4A CN201610427225A CN105903304A CN 105903304 A CN105903304 A CN 105903304A CN 201610427225 A CN201610427225 A CN 201610427225A CN 105903304 A CN105903304 A CN 105903304A
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- electromagnetic valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
Abstract
An energy-saving and environment-friendly dust removal system comprises a dust source control unit, an air draft pipeline unit, a dust removal unit, an air draft fan, an air return pipeline unit and an air conveying pipeline unit, wherein the air draft pipeline unit is connected with a dust source control unit and a waste gas inlet of the dust removal unit and a purified air outlet of the dust removal unit and the air draft fan, and the air return pipeline unit is connected with the air draft fan and the air conveying pipeline unit. Compared with the prior art, by means of cooperation of all functional units, the energy-saving and environment-friendly dust removal system is small in investment, efficient, energy-saving, capable of protecting consumable items and prolonging service life thereof and low in daily operating cost.
Description
Technical field
The invention belongs to Environmental-protecting dust-removing apparatus field, be specifically related to a kind of energy-conserving and environment-protective dust pelletizing system.
Background technology
The workshop that battery industry relates to is polluted dust and is mainly toxic heavy metal and toxicity graphite dust, and wherein, toxic heavy metal includes lead fume, lead dust, manganese dioxide dust, zinc oxide dust etc..The toxicity of lead fume and lead dust is maximum, can cause blood lead, and can accumulate without being drained out external in human body；Manganese dioxide dust major determinant central nervous system, also can accumulate in human body and not be drained out external；Zinc oxide dust poisoning manifestations is Nausea and vomiting, acute abdominal pain, but it can be automatically drained out external.And nervous system mainly can be produced infringement by graphite dust.Therefore, dust pelletizing system must be configured to reach professional safety and health standard and the environmental protection standard of country at the workshop being similar to battery industry, it is to avoid worker at the production line causes physical impairment and the environment that contaminates society.
Above-mentioned workshop is generally airtight big workshop, constitutes an airtight large space being isolated from the outside including one or more medium and small workshops mutually ganged up.Dust pelletizing system generally comprises convulsion unit and is extracted out by toxic gas, then by dust removing units, toxic gas is carried out dedusting, and the clean gas after dedusting is returned in workshop by blowing unit.Meanwhile, also can use air conditioner refrigerating, the clean gas after dedusting be lowered the temperature and the fresh wind of dispensing.But, current dust pelletizing system efficiency of dust collection is relatively low, its internal part, as filter cylinder, filter etc. can often generation blocking need periodically changed or cleaned, causes its life-span shorter, and costly, energy consumption is the highest for day-to-day operation.
Therefore, seek a kind of small investment, energy-efficient, can protect consumptive material and extend its life-span, dust pelletizing system that day-to-day operation expense is lower imperative.
Summary of the invention
It is an object of the invention to overcome shortcoming of the prior art with not enough, it is provided that a kind of small investment, energy-efficient, can protect consumptive material and extend its life-span, energy-conserving and environment-protective dust pelletizing system that day-to-day operation expense is lower.
The present invention is achieved through the following technical solutions:
A kind of energy-conserving and environment-protective dust pelletizing system, including dust source control unit, air draft pipeline unit, dust removing units, air exhauster, air return pipeline unit and aspirating pipeline unit, this air draft pipeline unit connects this dust source control unit and the exhaust gas entrance of dust removing units, and the clean gas connecting this dust removing units exports and this air exhauster, air return pipeline unit connects air exhauster and aspirating pipeline unit.
Further, also including Digital Control unit, this Digital Control unit electrically connects with this dust removing units, air exhauster and aspirating pipeline unit respectively, to be controlled its duty.
Further, also including after air filter, this air draft pipeline unit connects one end of this air exhauster and after air filter, and this air return pipeline unit connects the other end and this unit of supplying gas of this after air filter.
Further, also including after air filter, this air draft pipeline unit connects one end of this air exhauster and after air filter, and this air return pipeline unit connects the other end and this unit of supplying gas of this after air filter.
Further, also including " clean " exhaust gas inline valve, it is arranged on this air return pipeline unit.
Further, also including refrigeration and fresh wind supply unit, it is arranged between air return pipeline unit and aspirating pipeline unit, and this Digital Control unit feeds unit with this refrigeration and fresh wind and electrically connects, to be controlled its duty.
Further, this dust removing units includes the cleaner unit of at least two group independences, is connected with air draft pipeline unit respectively, and this Digital Control unit controls the duty of this cleaner unit respectively.
Relative to prior art, the dust pelletizing system of the present invention by the cooperation of a functional unit, small investment, energy-efficient, consumptive material can be protected and extend its life-span and day-to-day operation expense is low.
In order to enable the apparent understanding present invention, illustrate to illustrate the detailed description of the invention of the present invention below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the dust pelletizing system of the present invention.
Fig. 2 is the structural representation of one group of cleaner unit 132 in the dust removing units 13 shown in Fig. 1.
Fig. 3 is the modular structure schematic diagram of the Digital Control unit 14 shown in Fig. 1.
Detailed description of the invention
Referring to Fig. 1, it is the structural representation of energy-conserving and environment-protective dust pelletizing system of the present invention.This energy-conserving and environment-protective dust pelletizing system includes dust source control unit 11, air draft pipeline unit 12, dust removing units 13, Digital Control unit 14, air exhauster 15, after air filter 16, air return pipeline unit 17, " clean " exhaust gas inline valve 18, refrigeration and fresh wind supply unit 19 and aspirating pipeline unit 20.
This air draft pipeline unit 12 connects this dust source control unit 11 and the exhaust gas entrance of dust removing units 13, and the outlet of clean gas and this air exhauster 15 of connecting this dust removing units 13 connect, and connect air exhauster 15 and after air filter 16.Air return pipeline unit 17 connecting secondary air filter 16 and refrigeration and fresh wind feed unit 19, and " clean " exhaust gas inline valve 18 is arranged on this air return pipeline unit 17.This aspirating pipeline unit 20 feeds unit 19 with this refrigeration and fresh wind and is connected.This Digital Control unit 14 electrically connects with this dust removing units 13, air exhauster 15, refrigeration and fresh wind supply unit 19 and aspirating pipeline unit 20, to be controlled its duty respectively.This air exhauster 15 makes this dust source control unit 11 produce negative pressure, the poisonous dust and gas produced in workshop is inhaled into air draft pipeline unit 12 by this dust source control unit 11, and it is delivered to dust removing units 13, Digital Control unit 14 controls this dust removing units 13 and this poisonous dust and gas is carried out dedusting, air after dedusting again passes by after air filter 16 and carries out further dust removal by filtration, waste gas enters air return pipeline unit 17, portion is discharged by " clean " exhaust gas inline valve 18, refrigeration and fresh wind supply unit 19 carry out refrigeration cool-down to another part waste gas, and feed ozone, and again filtered by the air filter in refrigeration and fresh wind supply unit 19, finally by aspirating pipeline unit 20, clean gas is returned to workshop.
The most specifically introduce the concrete structure of each formant of this dust pelletizing system.
1 ) dust source control unit 11 : This dust source control unit 11 includes multiple hose and the negative pressure cabin of tubaeform suction port composition, is absorbed dirt source by point, line, surface, and is delivered to dust removing units 13 by air draft pipeline unit 12.
2 ) dust removing units 13 : This dust removing units 13 includes the cleaner unit of at least two group independences, in the present embodiment, including 6 groups of independent cleaner units 132 in parallel.Referring to Fig. 2, it is the structural representation of one group of cleaner unit 132 in the dust removing units 13 shown in Fig. 1.This cleaner unit 132 is upper wind inlet type sack cleaner, and it the most sequentially includes deashing device 26, upper box 22, middle casing 24, ash bucket 27 and a spike 28.
This upper box 22 is a closing space, including gas inlet passage 222 and air-purifying chamber 224.This gas inlet passage 222 is to be arranged on the middle part of this upper box 22 and run through the airtight passage of its upper and lower side, is the exhaust gas entrance 222a being connected with air draft pipeline unit 12 on the top of this gas inlet passage 222.In this upper box 22, the space beyond removing exhaust gas inlet channel 222 is air-purifying chamber 224.A sidewall at the air-purifying chamber 224 of this upper box 22 has a clean gas outlet 224a, this clean gas outlet 224a is connected to after air filter 16 by air draft pipeline unit 12, and air exhauster 16 is arranged on the air draft pipeline unit 12 between this clean gas outlet 224a and after air filter 16.
In this, casing 24 is arranged on the lower section of this upper box 22, and ash bucket 27 below constitutes a closing space.In this, casing 24 includes waste gas inlet 242, dust and gas segregation apparatus 244, defecator 246 and filter chamber 248.This waste gas inlet 242 is arranged on the upper end of this dust and gas segregation apparatus 244, and the bottom airtight connection of the gas inlet passage 222 with this upper box 22.This dust and gas segregation apparatus 244 is fixedly installed in this in the middle part of casing 24 by flange 243, and extends vertically through its upper and lower side, forms dust and gas split tunnel.Multiple defecators 246 are arranged on the side of this dust and gas segregation apparatus, and its opening communicates with the air-purifying chamber 224 of upper box 22.In this in casing 24, the space beyond removing exhaust gas air inlet 242, dust and gas segregation apparatus 244 and defecator 246 is filter chamber 248.It is separated by by card 21 between air-purifying chamber 224 and the filter chamber 248 of middle casing 24 of this upper box 22, on this card 21, there is through hole 212, the opening of this defecator 246 is communicated with the air-purifying chamber 224 of upper box 22 by this through hole 212, is then sealed by seal gasket 214 between defecator 246 and card 21.
Specifically, this dust and gas segregation apparatus 244 includes at least two fixed supports 2442 and multiple blade 2444.This fixed support 2442 is strip, in order to fixing blade 2444.Each blade 2444 has certain altitude, encompasses stage body, and its upper end open is more than lower ending opening, and vertical cross section is inverted ladder type.This blade 2444 stacking equally spacedly is arranged on this fixed support 2442, has an angle, have the vertical height of an overlap, and have space between lap between neighbouring two blades between blade 2444 and fixed support 2442.The opening shape of the section of this blade 2444 can be circular, oval or square, rectangle, triangle etc. are regular or irregular polygon.Waste gas inlet 242 is inserted directly into this dust and gas segregation apparatus 244.Between two adjacent blades 2444 up and down of this dust and gas segregation apparatus 244, the area in lap space is a unit gas passing area, and the area summation in the lap space between all of blade is total gas passing area.Typically, total gas passing area of this dust and gas segregation apparatus 244 is 5-100 times of the cross-sectional area of this exhaust gas entrance 222a, and the effect that the biggest then dust and gas of its multiple separates is the best, and the function of uniform air-flow is the best, but from the point of view of economic and practical, 8-25 times is preferred.Total gas passing area of this dust and gas segregation apparatus 244 and the size of dust and gas segregation apparatus 244, length, blade 2444 sheet number the most relevant, dust and gas segregation apparatus 244 is the biggest, length is the longest, the sheet number of blade 2444 is the most, then total gas passing area is the biggest, otherwise the least.
The height of this defecator 246 less than this dust and gas segregation apparatus 244 and the flange 243 being disposed thereon height and.This defecator 246 is specifically made up of fixed mount 2462 and filter bag 2464.This fixed mount 2462 is perpendicular with this card 21, and is fixed on the card 21 of this through hole 212 correspondence.This filter bag 2464 is set on this fixed mount 2462.The length of this filter bag 2464 is less than the length of this dust and gas segregation apparatus 244.Additionally, this filter bag 2464 can be replaced with filter cylinder.
This deashing device 26 is specially location high pressure gas pulse jetting deashing device, and it is arranged on the upper end of air-purifying chamber 224 of this upper box 22, and the through hole 212 that its nozzle is corresponding with defecator 246 is corresponding.
This ash bucket 27 is arranged on the lower section of casing in this, in order to the dust separated in collecting dust and gas segregation apparatus 24 and defecator 246.The lower end of this ash bucket 27 has unloads ash unit 272, and its sidewall is provided with access hole 274.This spike 28 is arranged on the lower section of ash bucket 27, in order to support this cleaner unit.
3 ) Digital Control unit 14 : Referring to Fig. 3, it is the modular structure schematic diagram of Digital Control unit 14.This Digital Control unit 14 includes PLC technology integrated chip 30(PLC), chip power 31, converter 32, communication module 33, cleaner unit pressure difference transmitter 34, AI module 35, digital input module 36, digital output module 37, automatically and MTS group 38, hand push button group 39, pulse spray ash electromagnetic valve group 40, cleaner unit turnover pneumoelectric magnet valve 41, unload ash electromagnetic valve 42, aflter-fillter pressure difference transmitter 43, blockage resisting winding-up electromagnetic valve 44, air exhauster switch valve 45, touch screen 46 and power of electromagnetic valve module 47.Additionally, also each module also includes that display lamp is to show its current duty.
Specifically, this chip power 31 chip integrated with PLC technology 30 electrically connects, and provides power supply for the integrated chip of this PLC technology 30.This converter 32 is connected by communication module 33 chip integrated with this PLC technology 30.This converter 32 electrically connects with air exhauster 15, the air quantity needed according to dust source control, the frequency of the frequency conversion motor of regulation air exhauster 15, by the adjustment of the frequency of the frequency conversion motor of air exhauster, controls the rotating speed of air exhauster 15, is controlled the convulsion amount of air exhauster 15 by rotating speed.The power of motor of air exhauster is relevant with rotating speed, and therefore, the effect of converter 32 controls air quantity and reaches practically necessary.In general design, there is certain unnecessary air quantity, it addition, during actually used, unsaturated ruuning situation the most usually occurs, that is the motor of dispensing is not the motor saving most energy consumption, but the motor of oepration at full load can be met, but, client typically has the requirement saving most energy consumption, so, converter the most just should need and produce.Each independent cleaner unit 132 is respectively arranged with a cleaner unit pressure difference transmitter 34, this pressure difference transmitter 34 is all analogue signal input module by this AI module 35 of AI module 35() chip 30 integrated with this PLC technology electrically connect, the differential pressure signal of cleaner unit is sent to the integrated chip of this PLC technology 30, and the parameter of cleaner unit pressure difference transmitter 34 is adjusted by this AI module 35 by the control signal of the integrated chip of this PLC technology 30.This is automatically and the current demand signal of automatic or manual is the most all sent to the integrated chip of this PLC technology 30 by digital input module 36 by MTS group 38 and hand push button group 39.Wherein, this is automatically and MTS group 38 includes that the cleaner unit PLC being separately positioned on the cleaner unit 132 of six groups of independences controls to unload ash PLC with disconnection switching switch, cleaner unit and controls and disconnect switching switch；This hand push button group 39 includes that the manual stop button of cleaner unit manual actuation of button, cleaner unit, cleaner unit unload ash manual actuation of button, cleaner unit unloads grey manual stop button, air exhauster manual actuation of button, the manual stop button of air exhauster, converter power transmission button, converter cut-off button, dust remover blowing switch switch, dust remover blowing button, dust remover blowing stop button and scram button etc..Being disposed to of above-mentioned hand push button group 39 ensures to reach this dust pelletizing system manually operated purpose in the case of non-automatic control.The deashing device 26 of each independent cleaner unit 132 is provided with a pulse spray ash electromagnetic valve group 40 respectively, in the present embodiment, each pulse spray ash electromagnetic valve group 40 includes 16 pulse spray ash electromagnetic valves, to control the nozzle spray ash cleaning state to defecator 246 of deashing device 26.Additionally, each independent cleaner unit 132 is also respectively provided with a cleaner unit turnover pneumoelectric magnet valve 41 and unloads ash electromagnetic valve 42.The integrated chip of this PLC technology 30 controls this pulse spray ash electromagnetic valve group 40, cleaner unit turnover pneumoelectric magnet valve 41 respectively by digital output module 37 and unloads the work of ash electromagnetic valve 42.This aflter-fillter differential pressure transmitter 43 is arranged on after air filter 16, this aflter-fillter pressure difference transmitter 43 is electrically connected by AI module 35 chip integrated with this PLC technology 30, the pressure difference signal of after air filter 16 is sent to the integrated chip of this PLC technology 30, and the parameter of aflter-fillter pressure difference transmitter 34 is adjusted by this AI module 35 by the control signal of the integrated chip of this PLC technology 30.In addition, blockage resisting winding-up electromagnetic valve 44 and air exhauster switch valve 45 electrically connect also through this digital output module 37 chip integrated with this PLC technology 30, and the integrated chip of this PLC technology 30 controls this blockage resisting winding-up electromagnetic valve 44 and the work of air exhauster switch valve 45 respectively by digital output module 37.This power of electromagnetic valve module 47 is this pulse spray ash electromagnetic valve group 40, cleaner unit passes in and out pneumoelectric magnet valve 41 and unloads ash electromagnetic valve 42, blockage resisting winding-up electromagnetic valve 44 and air exhauster switch valve 45 provides power supply.
This touch screen 46 chip integrated with this PLC technology 30 is directly connected to, the control duty current in order to show this programmable control chip 30, and control parameter can be inputted by this touch screen 46, by the integrated chip of this PLC technology 30, each module is operated renewal and the work of parameter.
Hereinafter, the specific works flow process of this Digital Control unit 14 is described in detail:
First converter 32 is carried out Initialize installation, including arranging outside/PU combined running pattern and preset frequency.
Next to that the setting of air exhauster Starting mode: respectively at electric cabinet and the PLC technology integrated chip 30(PLC of converter 32) electricity be cashier's office in a shop provided with air exhauster manual actuation of button, the manual stop button of air exhauster, converter power transmission button and converter cut-off button.The electric cabinet of converter and PLC electric cabinet any one press low-converter power transmission button, converter 32 electric, then at converter electricity cabinet and PLC electricity cabinet, any one presses air exhauster manual actuation of button, then setpoint frequency operation press by air exhauster；At converter electricity cabinet and PLC electricity cabinet, any one presses the manual stop button of air exhauster, then air exhauster is out of service；At converter electricity cabinet and PLC electricity cabinet, any one presses low-converter cut-off button, then converter 32 power-off.
It is followed by this Digital Control unit 14 is carried out system start-up.Close switch board power supply, then there will be " cleaner unit intelligent control system " main interface on touch screen, and system enters automatic monitor state, and the indices of each cleaner unit, air exhauster, after air filter etc. shows on the main interface of touch screen.
This Digital Control unit 14 controls the deashing device 26 of each cleaner unit and sequentially carries out off-line ash-clearing work.When in 6 groups of independent cleaner units 132 in parallel of this dust removing units 13,1 cleaner unit carries out pulse jetting deashing, other 5 cleaner units will not carry out pulse jetting deashing, in i.e. 6 cleaner units, only 1 cleaner unit can carry out pulse jetting deashing, occur without two cleaner units and carry out the situation of pulse jetting deashing simultaneously, to ensure that abundant cleaner unit carries out dedusting work.Owing to the deashing device 26 of each cleaner unit 132 includes 16 nozzles, pulse spray ash electromagnetic valve group 40 includes that 16 pulse spray ash electromagnetic valves are correspondingly arranged with each nozzle, and these 16 pulse spray ash electromagnetic valves are sequentially jetted during jetting deashing in turn by the combination of 3,3,2,2,3,3 work.After First dust-collector pulse jetting cleaning completes, and before second cleaner unit carries out pulse jetting deashing, can set a time interval (tentative 1 minute) by touch screen 46 chip integrated to this PLC technology 30, this time interval can artificially adjust.It is a large period that these 6 cleaner units 132 sequentially complete pulsatile once jetting deashing, and between each large period, time interval (tentative 12 hours) can artificially adjust.When ash discharge timing arrives, this PLC technology integrated chip 30 start signal output unloads ash electromagnetic valve 42 and carries out deashing, and on touch screen 46, corresponding virtual display lamp can flash.
It addition, can be set by the running parameter of touch screen 46 chip integrated to this PLC technology 30.As: the pressure reduction upper limit of the cleaner unit differential pressure transmitter 34 of 6 cleaner units, pressure reduction lower limit, limit pressure difference and differential pressure pickup range can be respectively provided with；6 duster pulse spray ash pulsewidths of electromagnetic valve group 40, pulse spacing, winding-up time and number of simultaneously jetting can be respectively provided with；Pulse spray ash electromagnetic valve timing winding-up time interval (hour) is arranged, i.e. 6 cleaner unit automatic spraying 1 times successively every how many hours；And two cleaner units timing winding-up time interval (dividing) are arranged, during i.e. 6 cleaner unit automatic sprayings successively, two duster pulse spray ash electromagnetic valve group 40 timing winding-up time intervals.And the pressure reduction that also can set after air filter pressure difference transmitter 43 is arranged, including the pressure reduction upper limit, limit pressure difference and differential pressure pickup range.Further, also can be configured going out grey parameter, including arranging ash discharge system ash discharge dwell time, ash discharge operation time, the blockage resisting winding-up pulsewidth of electromagnetic valve 44, the pulse distance of blockage resisting winding-up electromagnetic valve 44.
Arranging of above-mentioned each parameter is very simple, clicks on the numeric input boxes of relative set parameter on touch screen 46, then can eject a dummy keyboard, and input sets numeral on the virtual keyboard.
Additionally, due to this Digital Control unit 14 is provided with hand push button group 39, control this Digital Control unit in order to manual operation.Specifically, converter power transmission button and converter cut-off button are for converter power transmission and power-off.Scram button is the jerk of system in time being in an emergency.Scram button necessarily be in off-state when systems are functioning properly.Air exhauster manual actuation of button and the manual stop button of air exhauster are for controlling operation and the stopping of air exhauster.Touch screen SR is for when deadlock phenomenon occurs in touch screen, can press this button and restart.Pressing in the winding-up button of six groups of cleaner units, the pulse spray ash electromagnetic valve group 40 of corresponding cleaner unit is run, and carries out deashing；When pressing stopping winding-up button, the pulse spray ash electromagnetic valve group 40 of all cleaner units is out of service.When pressing cleaner unit and unloading ash manual actuation of button, the ash electromagnetic valve 42 that unloads of corresponding cleaner unit runs；When pressing cleaner unit and unloading grey manual stop button, all unload ash electromagnetic valve 42 out of service.Winding-up in six groups of cleaner units switches switch, and one of them is switched to control end, and corresponding cleaner unit is controlled it by PLC and runs；Winding-up in six groups of cleaner units is switched switch, and one of them is switched to open end, and PLC disconnects running corresponding cleaner unit and controls, and now this cleaner unit is in halted state.
4 ) after air filter 16 : This after air filter 16 farther includes filtering net film, filtration further to fine dusts.
The dust pelletizing system of the present invention, by the cooperation of this each functional unit above, has carried out effective dedusting and purification to poisonous dust and gas.The dust-cleaning principle of the dust pelletizing system of the present invention described further below.
First it is the dedusting in this dust removing units 13.During work, dust-laden exhaust gas containing heavy dirt or high concentrate dust enters gas inlet passage 222 from the exhaust gas entrance 222a of upper box 22, now the initial velocity of waste gas is usually higher, and directly enters dust and gas segregation apparatus 244 by the waste gas inlet 242 of middle casing 24.In dust and gas segregation apparatus 244, dust-contained airflow from top to bottom flows, simultaneously because 8-25 times of the cross-sectional area that total gas passing area of dust and gas segregation apparatus 244 is this exhaust gas entrance 222a, therefore, waste gas can be because shunting and quick deceleration in dust and gas segregation apparatus 244.First, dust in dust-contained airflow keeps huge inertia force vertically downward under the effect of initial velocity the highest for exhaust gas entrance 222a, when wind speed quick deceleration, under the dual function of inertia force and the gravity of its proportion generation, first the major part thick and heavy dust of granule separates with air, naturally falls in ash bucket 27 in the dust and gas split tunnel of this dust and gas segregation apparatus 244.Secondly, under the uniform guide effect of air pressure, during dust-contained airflow constantly space between the blade 2444 of the stacked on top of one another of this dust and gas segregation apparatus 244 branches to filter chamber 248, the flow velocity of dust-contained airflow the most progressively rapid decrease；Under the forced guiding of blade 2444 and the uniform guiding dual function of air pressure of this dust and gas segregation apparatus 244, it is zero that the downward flow velocity of dust-contained airflow slows down, then uniformly spread to surrounding from bottom to top further along the space between the blade 2444 of dust and gas segregation apparatus 244, flow to defecator 246, thus in dust and gas segregation apparatus 244, form " U " type fluid path；A zero velocity point is had in the bottom of this " U " type fluid path, this zero velocity point is exactly the change point of dust movement track, thus produce powerful centrifugal force, under the dual function of centrifugal force and self gravitation, in major part fine grain and the bigger dust of proportion will at this moment by dust and gas segregation apparatus 244 time naturally fall in ash bucket.Further, owing to total gas passing area of this dust and gas segregation apparatus 244 is much larger than exhaust gas entrance 222a area, therefore, under the uniform guiding of air pressure, this dust and gas segregation apparatus 244 has effectively acted as the effect of the uniform air-flow of deceleration, make remaining more fine particle size or the less dust of proportion arrive defecator 246 the most equably with relatively low flow velocity, then by this defecator 246 it is separated and remove.Finally, the cleaned air after this crosses defecator 246 filtration enters the air-purifying chamber 224 of this upper box 22 by through hole 212, is discharged by the clean gas gas outlet 224a of air-purifying chamber 224.Adsorbing the dust at defecator 246 outer surface then by the high pressure gas pulse dust cleaning of deashing device 26, dust departs from this defecator 246 and falls in ash bucket 27.
Dust removing units 13 includes that 6 groups of cleaner units 132 in parallel, these six groups cleaner units 132 in parallel carry out udst separation process to poisonous dust and gas simultaneously.Cleaned air after filtration is discharged through clean gas gas outlet 224a, then it is delivered to after air filter 16 by air draft pipeline unit 12 and carries out the dust removal by filtration of further fine dusts, clean waste gas is through air return pipeline unit 17, part " clean " exhaust gas is discharged by " clean " exhaust gas inline valve 18, part " clean " exhaust gas carries out refrigeration cool-down by refrigeration and fresh wind supply unit 19, and supplementary ozone, finally by aspirating pipeline unit 20, clean gas is returned to workshop.
It addition, in addition to the dust removing effects of cleaner unit 132, it is also very important that the filter process of the off-line ash-clearing method of this cleaner unit 132 and the filter bag 2464 of defecator 246 controls.Due to filtration work before, the outer surface that this filter bag 2464 is positioned at filter chamber 248 has gathered substantial amounts of dust thus has formed cake layer, and the dust granules distribution situation of this cake layer is that dust granules is gradually increased the most from inside to outside.Along with the operation of this cleaner unit 132, the thickness of this cake layer can be increasing so that the running resistance of cleaner unit strengthens, and the efficiency of Chalk-dust filtering reduces.Accordingly, it would be desirable to periodically this filter bag 2464 is carried out deashing.In the present invention, this dust removing units 13 includes 6 groups of cleaner units 132 in parallel, controls the duty of these 6 groups cleaner units 132 in parallel by Digital Control unit 14 and controls its deashing device 26 and carry out off-line spray ash successively.So-called off-line spray ash, i.e. starts deashing device 26 and carries out high pressure gas pulse jetting deashing work when this cleaner unit 132 decommissions.Owing to cleaner unit 132 decommissions, now the exhaust gas entrance 222a of this cleaner unit 132 enters without waste gas, also discharges without the clean gas after filtering, and the inside of cleaner unit 132 is in closes not circulation status, carries out at this moment filter bag 2464 is carried out high pressure gas pulse jet.When carrying out high pressure gas pulse jet, filter bag instantaneous expansion the most slowly reclaims, the dust granules being attached to filter bag surface is also moved out therewith by radially outer power, the dust granules on outermost top layer drops more greatly and rapidly due to self gravitation, the dust granules in intermediate layer drops due to self gravitation during the space of the filter chamber 248 of cleaner unit is free, and innermost layer is i.e. adjacent to be attached to the dust granules particle diameter minimum on filter bag surface, himself gravity is often not larger than its resistance in the space of the filter chamber 248 of cleaner unit, therefore can floating be free in the space, filter chamber 248 of this cleaner unit.Due to cleaner unit 132 now off-line, being in not circulation status inside it, therefore, the dust fractions that grain diameter is little remains attached to the surface of filter bag.During practical operation; find that these fine dust particles remaining attached to filter bag surface after off-line spray ash actually increase the efficiency of dust collection of this filter bag; it is thus desirable to protect this cake layer, cleaner unit is made to realize utilizing the effect of the hyperfine filtration of cake layer under the conditions of the low-resistance force value less than 500pa.In order to reach above-mentioned effect, need the air pressure of the high pressure gas pulse dust cleaning to this deashing device 26 and time interval to debug and formulate, finally realize cleaner unit and save resistance dissipative >=50%.
Through repeatedly verifying, inventor sums up the control method of cleaner unit off-line spray ash, including step:
First make cleaner unit 132 off-line, make being within cleaner unit 132 close not circulation status；Then use pulse jet electromagnetic valve nozzle that cloth bag or cartridge interior are carried out high pressure gas pulse jet.This pulse jet electromagnetic valve uses 1 cun of right-angle valve.Wherein, the control method for separate unit cleaner unit 132 is:
Set pulse jet distance, i.e. 1 cun winding-up mouthpiece to the distance controlling between filter cylinder or cloth bag mouth at 300-600mm, optimum distance is 440mm
The strength control setting pulse jet exists: 2.5-4.0kg(high pressure gas force value)
The time setting each pulse jet controls at 60-100 millisecond.
Set pulse jet frequency: reach the time interval of 2.5-4.0kg with air pressure and be as the criterion and obtain pulse jet frequency
Set pulse jet number of times: 1 ~ 3 time, most preferably jet 2 times
Set the stays static time: i.e. pulse jet terminates to the time interval that separate unit cleaner unit air inlet valve and outlet valve are opened to be set as 1 ~ 6 minute, most preferably 2 ~ 3 minutes.
When cleaner unit air inlet valve and outlet valve are opened simultaneously, work for terminating the pulse jetting deashing of this cleaner unit.
Owing to the dust removing units 13 of the present invention includes 6 groups of in parallel and independent cleaner units 132, in addition to the cleaner unit of every platform independent is carried out parameter setting, the deashing order of the cleaner unit 132 to 6 groups of independences of dust removing units is also needed to be set.
At the end of the pulse jetting deashing time of one of which cleaner unit 132, the pulse jetting deashing work of another group cleaner unit 132, time interval >=1 minute therebetween, and the pulse jetting deashing being so recycled to the 6th group of cleaner unit can be carried out and terminate.Thus complete the pulse jet large period of dust removing units 13.
When after the pulse jet large period completing one-time dedusting unit 13, it is not required to carry out immediately the pulse jet large period of secondary dust removing units 13, its time interval can need according to the practical situation of the pressure reduction of cleaner unit and set, when the pressure reduction of cleaner unit is close to 500Pa, it is necessary for carrying out the pulse jet large period of dust removing units 13 next time, to guarantee that the pressure difference of all of cleaner unit is held in the range of less than 500Pa.Generally, the time interval of the pulse jet large period of the dust removing units 13 of adjacent twice is >=2 hours.
The control method of above-mentioned off-line spray ash is it is ensured that the Resistance Value of cleaner unit controls all the time: within ＜ 500Pa, typically can control between 400-480Pa.Thus reach to save energy consumption: the purpose of >=50%.
Actually; by the high-effective dust-removing of the dust and gas segregation apparatus 244 of above-mentioned dust removing units 132 and spray the high efficiency filter of filter bag under grey control method controls at cleaner unit off-line; the waste gas exporting 224a discharge from the clean gas of this dust removing units 132 can reach discharge standard the most substantially; therefore, it is possible to protect rearmounted after air filter by less loss to extend its life-span.
Relative to prior art, the dust pelletizing system of the present invention by the cooperation of a functional unit, small investment, energy-efficient, consumptive material can be protected and extend its life-span and day-to-day operation expense is low.Specifically; first; this cleaner unit includes dust and gas segregation apparatus 244, defecator 246; first this dust and gas segregation apparatus has carried out effective dedusting of primary to hard dust; and owing to there being the protective effect of dust and gas segregation apparatus 244; can substantially alleviate dust defecator 246 produces directly impact and load, particularly heavy firmly to consolidate dirt to the impact of defecator 246 and load；Simultaneously as pulse jet intensity and the reduction of frequency, the high pressure gas of initiation produces indirectly impact load to filter bag or filter cylinder and reduces therewith.Being proved by reality test and practical engineering application, service life more than 1 times of the main consumptive material of the cleaner such as filter bag or filter cylinder can effectively be protected and extend by the cleaner unit of the present invention, thus reaches significantly to save the purpose of consumptive material.
Secondly, this dust pelletizing system can be realized Automated condtrol by Digital Control unit 14, especially the defecator 246 of six groups of cleaner units of this dust removing units is sequentially carried out off-line ash-clearing process, and the cake layer rationally retaining filter bag has reached superfine filter effect.
Further, the dust pelletizing system combinative structure of the present invention is simple and easy, manufactures low with installation cost and floor space, and therefore, cleaner unit of the present invention has cost-effective and takes up an area few advantage.
The invention is not limited in above-mentioned embodiment, if various changes or deformation to the present invention are without departing from the spirit and scope of the present invention, if within the scope of these are changed and deform claim and the equivalent technologies belonging to the present invention, then the present invention is also intended to comprise these changes and deformation.
Claims (10)
1. an energy-conserving and environment-protective dust pelletizing system, it is characterized in that: include dust source control unit, air draft pipeline unit, dust removing units, air exhauster, air return pipeline unit and aspirating pipeline unit, this air draft pipeline unit connects this dust source control unit and the exhaust gas entrance of dust removing units, and the clean gas connecting this dust removing units exports and this air exhauster, air return pipeline unit connects air exhauster and aspirating pipeline unit.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 1, it is characterised in that: also including Digital Control unit, this Digital Control unit electrically connects with this dust removing units, air exhauster and aspirating pipeline unit respectively, to be controlled its duty.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 2, it is characterized in that: also include after air filter, this air draft pipeline unit connects one end of this air exhauster and after air filter, and this air return pipeline unit connects the other end and this unit of supplying gas of this after air filter.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 3, it is characterised in that: farther including " clean " exhaust gas inline valve, it is arranged on this air return pipeline unit.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 4, it is characterized in that: farther include refrigeration and fresh wind supply unit, it is arranged between air return pipeline unit and aspirating pipeline unit, this Digital Control unit feeds unit with this refrigeration and fresh wind and electrically connects, to be controlled its duty.
6. according to the energy-conserving and environment-protective dust pelletizing system described in claim any one in claim 1 ~ 5, it is characterized in that: this dust removing units includes the cleaner unit of at least two group independences, being connected with air draft pipeline unit respectively, this Digital Control unit controls the duty of this cleaner unit respectively.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 6, it is characterised in that: this Digital Control unit includes the integrated chip of PLC technology, chip power, converter, communication module, cleaner unit pressure difference transmitter, AI module, digital output module, pulse spray ash electromagnetic valve group, cleaner unit turnover pneumoelectric magnet valve, unloads ash electromagnetic valve, blockage resisting winding-up electromagnetic valve, air exhauster switch valve, power of electromagnetic valve module and touch screen；This chip power chip integrated with PLC technology electrically connects and provides power supply for it, and this converter electrically connects with air exhauster, and is electrically connected by communication module chip integrated with this PLC technology；This cleaner unit pressure difference transmitter is electrically connected by AI module chip integrated with this PLC technology；Ash electromagnetic valve group is sprayed in this pulse, cleaner unit passes in and out pneumoelectric magnet valve, unload ash electromagnetic valve, blockage resisting winding-up electromagnetic valve, air exhauster switch valve pass through digital output module chip integrated with this PLC technology respectively and electrically connect；This power of electromagnetic valve module is that this pulse is sprayed ash electromagnetic valve group, cleaner unit turnover pneumoelectric magnet valve, unloaded ash electromagnetic valve, blockage resisting winding-up electromagnetic valve, air exhauster switch valve offer power supply；This touch screen chip integrated with this PLC technology electrically connects.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 7, it is characterized in that: this Digital Control unit also includes digital input module, automatic and MTS group and hand push button group, and this is electrically connected by this digital input module chip integrated with this PLC technology with MTS group and hand push button group automatically.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 8, it is characterised in that: this cleaner unit includes
Upper box, including gas inlet passage and air-purifying chamber；This gas inlet passage is airtight passage, and its top is exhaust gas entrance；In this upper box, the space beyond removing exhaust gas inlet channel is air-purifying chamber, and the sidewall at air-purifying chamber has a clean gas outlet；
Middle casing, it is arranged on the lower section of this upper box, and in this, casing includes waste gas inlet, dust and gas segregation apparatus, defecator and filter chamber；This waste gas inlet is arranged on the upper end of this dust and gas segregation apparatus, and is connected with the bottom of the gas inlet passage of this upper box；This dust and gas segregation apparatus is vertically set in this raising middle flask body and runs through its upper and lower side, forms dust and gas split tunnel；This defecator is arranged on the side of this dust and gas segregation apparatus, and its opening communicates with the air-purifying chamber of upper box；In this, in casing, space beyond removing exhaust gas air inlet, dust and gas segregation apparatus and defecator is filter chamber.
Energy-conserving and environment-protective dust pelletizing system the most according to claim 9, it is characterized in that: the programmable control chip of this Digital Control unit controls the strength control of this pulse jet electromagnetic valve pulse jet and controls at 60-100 millisecond in 2.5-4.0kg, the time of each pulse jet.
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| CN201610427225.4A CN105903304A (en) | 2016-06-16 | 2016-06-16 | Energy-saving and environment-friendly dust removal system |
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| CN201610427225.4A CN105903304A (en) | 2016-06-16 | 2016-06-16 | Energy-saving and environment-friendly dust removal system |
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| CN105903304A true CN105903304A (en) | 2016-08-31 |
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| CN201610427225.4A Pending CN105903304A (en) | 2016-06-16 | 2016-06-16 | Energy-saving and environment-friendly dust removal system |
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| CN109926425A (en) * | 2019-04-09 | 2019-06-25 | 四川大国工场科技有限公司 | A kind of dust removal method and device based on shared station |
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Application publication date: 20160831 |