The number of patent application that the present invention is applicant to be proposed on 05 22nd, 2015 is " 201510264840.3 ", title
For the divisional application of the Chinese invention patent application of " dust pelletizing system ", entire contents is incorporated among the application.
Detailed description of the invention
Elaborate a lot of detail in the following description so that fully understanding the present invention.But the present invention can be with
Much being different from alternate manner described here to implement, those skilled in the art can be in the situation without prejudice to intension of the present invention
Under do similar popularization, therefore the present invention is not limited by following public specific embodiment.
For woodworking mill, it uses following lathe in a large number: (1) woodworking sawing machine, the saw cut timber of high-speed motion, produces
Raw wood powder diameter is big, and splashing speed is fast, and dirt source is fixed;(2) thicknessing and planning machine, process wood plane and forming surface, wood
Bits mostly are block and granular, have a small amount of fine dust;(3) wood-milling machine, carries out Milling Process to timber, and timber footpath degree is big, splashes
Speed is fast, and dirt source is not concentrated;(4) drilling machine and seat mortising machine, is mainly used in punching and tongue-and-groove, and the wood flour of generation very particle diameter is relatively big,
Dirt source is unstable;(5) wood-turning machine, wood flour mostly is block and strip, and volume is big, and Dust Capacity is little.This makes woodworking produce
Its particle size span of dust bigger, and the overwhelming majority is big dust particle.
In view of this, the present invention design woodworking mill's dust pelletizing system when, for this particle size span big in the case of adopt
With cascade filtration, i.e. being reclaimed by bigger granule first with cyclone dust extractor, then recycling sack cleaner does final purification,
Described further below.
Dust pelletizing system is described as a example by woodworking mill by the present invention.It will be appreciated, however, that dust pelletizing system of the present invention is not
Being only limitted to woodworking mill be suitable for, other has the dedusting that the big occasion of similar particle size span can also describe by the following technical solutions
System.
See Fig. 1, for the schematic diagram of dust pelletizing system of the present invention.This dust pelletizing system have employed the two-stage dust removal of " carrying " more and sets
Meter, the most each wood craft machines (or other dusting lathe) are other arranges a cyclone dust extractor, common after each cyclone dust extractor parallel connection
It is connected to sack cleaner, and each cyclone dust extractor and sack cleaner are respectively connected to dust arrester.The program uses cascade filtration, i.e.
Being reclaimed by bigger granule first with cyclone dust extractor, then utilize sack cleaner to do final purification, the air after purification can
Directly to drain back into workshop, so can be at the energy loss of summer in winter saving blower fan group.
Dust pelletizing system of the present invention is optimized improvement, below at aspects such as cleaner, power supply unit and control panels
Illustrate respectively.
1, cleaner
See Fig. 2, for the schematic diagram of cleaner of the present invention.This cleaner includes the cyclone dust removal for two-stage dust removal
Device (without loss of generality, Fig. 2 only illustrates a cyclone dust extractor) and sack cleaner, concrete structure is: cleaner includes connecing
Cyclone dust extractor 4 and sack cleaner 1, cyclone dust extractor 4 is connected by airduct 5 with sack cleaner 1, and blower fan 6 is arranged at cloth
On the exhausting duct of bag dust collector 1 (or on intake air way of cyclone dust extractor 4), cyclone dust extractor 4 and sack cleaner 1 be connected to collection
Dust collected by dirt device 7.Dusty gas enters into cyclone dust extractor 4 from air inlet Pi and carries out primary dust removing, enters back into afterwards
Sack cleaner 1 carries out two-stage dust removal, and two-stage dedusting gained dust is collected by integrator 7, and the clean wind after dedusting is by air outlet Po
Discharge, be achieved in two-stage dedusting, more preferable dust removing effects can be obtained.
As in figure 2 it is shown, the present embodiment is provided with vibration rack 3, sack cleaner 1 is installed on vibration by vibrating spring 2
Support 3, Vibration on Start-up support 3 can shake off the laying dust on sack cleaner 1, so can cleaning cloth bag dust collector 1 effectively, with
Keep good dust removing effects.
The present embodiment is optimized design to the subsystems such as cyclone dust extractor 4, sack cleaner 1, blower fan 6 or parts,
Citing is described in detail individually below.
See Fig. 3, it is shown that the structure of cyclone dust extractor of the present invention.This cyclone dust extractor 4 includes cyclone cylinder 42, cyclone cylinder 42
Being provided with helical on inner chamber, the top of cyclone cylinder 42 arranges collection blast cap 44, and the cavity wall of collection blast cap 44 and cyclone cylinder 42 is respectively provided with
Cyclone cylinder air duct joint 1 and cyclone cylinder air duct joint 2 43, the bottom of cyclone cylinder 42 arranges cyclone dust removal ash bucket 41, whirlwind
Dedusting ash bucket 41 is connected to dust arrester 7.The dust removal mechanism of this cyclone dust extractor 4 is to make dust-contained airflow rotate, by means of from
Dust is separated from air-flow and is trapped in wall by mental and physical efforts, relends and helps action of gravity to make dust fall into cyclone dust removal ash bucket 41.
See Fig. 4, it is shown that the structure of this practicality sack cleaner.This sack cleaner includes by upper box 14 and lower box
13 casings constituted, the casing air duct joint one (not shown) of upper box 14 is by airduct with cyclone cylinder air duct joint 2 43 even
Connecing, the casing air duct joint 2 15 of lower box 13 is connected with blower fan 6, so that blower fan 6 is arranged at bag-type dust by airduct
On the exhausting duct of device 1.The inside of lower box 13 arranges filter bag 16, and the bottom of lower box 13 arranges bag-type dust FENGDOU 12, this cloth
Bag dedusting FENGDOU 12 is fixed on sack cleaner column 11 by gusset 17, and this bag-type dust FENGDOU 12 and dust arrester 7
Dust valve 18 is set on interface channel.Dusty gas is entered casing by sack cleaner 1 entrance, the gas after being purified by filter bag 16
Body enters blower fan 6, is sucked by blower fan 6 afterwards and is directly discharged into indoor (can also take over and be discharged to outdoor), was carried out by filter bag 16
After filter, dust collection is in bag-type dust FENGDOU 12, and these dust are collected in dust arrester 7 by opening/close dust valve 18.
In the present invention, cleaner is provided the wind-force of dedusting by blower fan 6, carries out the structure of blower fan 6 in detail below
Describe.
See Fig. 5, for the schematic diagram of blower fan of the present invention.Blower fan 6 includes casing 62 and draught fan impeller 63, has scroll casing shape wind
The casing 62 in road is installed on support 61, and draught fan impeller 63 is rotated by impeller axle 64 and is installed on casing 62 inside, and impeller axle 64 passes
It is dynamically connected in the power output shaft of motor 8.In this example, belt drive between draught fan impeller 63 and motor 8, is used to connect, the most also
Alternate manner can be used to be in transmission connection, do not repeating at this.
See Fig. 6, it is shown that fan impeller structure of the present invention.This draught fan impeller 63 includes that left and right end plate 632 (only shows in figure
Go out one end) and multi-disc fan blade 631, wherein: left and right end plate 632 is separately fixed on impeller axle (not shown);All wind
Machine blade 631 is respectively along the axial distribution of impeller axle and be folded between left and right end plate 632.Especially, fan blade 631 hangs down
Directly the cross section in impeller axle curves curve-like (preferably curving arc-shaped) along longitudinal, and fan blade 631 thickness is from blower fan
Root of blade is gradually reduced to fan blade afterbody, is conducive to keeping preferable aerodynamic characteristic and preferable structural strength.This wind
Machine impeller improves fan blade structure, and the whirlpool produced during airflow passes fan blade trailing edge is smashed, thus efficiently reduces
Flow resistance, reduces vibration and noise, improves fan efficiency, illustrates further below.
See Fig. 7, it is shown that the embodiment of the present invention one fan blade structure.The trailing edge of every fan blade 631 is distributed and is
Row blade small rut 6311, these small ruts 6311 can be circular, square etc..Air-flow rotate draught fan impeller effect under by wind
The leading edge of machine blade 631 enters, and when the trailing edge of airflow passes fan blade 631, subtracts under the effect of blade small rut 6311
The whirlpool of little fan blade afterbody, smashes original overall air-flow simultaneously, thus adds the disturbance of air-flow;Thus by gas
The Maelstrom that stream produces after flowing through fan blade is divided into little whirlpool, thereby reduces resistance, vibration and noise.May be appreciated
It is that the present embodiment also simultaneously leading edge at every fan blade 631 can arrange some blade small ruts 6311, is tied by small rut
The whirlpool that fan blade trailing edge 6313 produces is smashed by structure;Meanwhile, blade small rut 6311 can also be well by airflow passes
The whirlpool produced during fan blade leading edge.Certainly, it is possible to the only leading edge at fan blade 631 arranges blade small rut 6311.
See Fig. 8, it is shown that the embodiment of the present invention two fan blade structure.If the trailing edge of every fan blade 631 is provided with
Cured leaf sheet sawtooth 6312, the height of its Leaf sawtooth 6312 is 15%~40% with the ratio of the width of blade sawtooth 6312, leaf
The angle of hook of sheet sawtooth 6312 is 30 °~130 °;The tooth top 63122 of blade sawtooth 6312 is flat tooth top, blade sawtooth 6312
Teeth groove 63121 is V-notch, certainly may be used without other shape.In addition, it is possible to simultaneously in the leading edge of every fan blade 631
6312 are provided with some blade sawtooth 6312;Or, it is possible to the only leading edge 6312 at fan blade 631 arranges blade sawtooth
6312.The present embodiment arranges sawtooth 6312 on fan blade 631, and its operation principle is identical with precedent, does not repeats them here.
2, power supply unit
The power supply unit of dust pelletizing system of the present invention includes connecing electricity system and power distribution cabinet, connects electricity system and passes through mains power supply
Or photovoltaic power supply device powers to power distribution cabinet, motor 8 accesses power distribution cabinet to obtain electric power, described in detail below.
Referring also to Fig. 9~Figure 11, for the total assembling structure of embodiment of the present invention power distribution cabinet.The cabinet of this power distribution cabinet is provided with
Service entrance switch room, kilowatt-hour meter room and outlet switch room: service entrance switch room is provided with door-plate 91 and rear shrouding, indoor set service entrance switch peace
Dress plate 912;Kilowatt-hour meter room is provided with shrouding 97 behind door-plate 92 and kilowatt-hour meter room, and indoor set electric meter installation board 910, kilowatt-hour meter is installed
Plate 911, wherein door-plate 92 can be positioned above lead sealing 94 and coded lock 95, in case other people illegally open;Outlet switch room is provided with
Shrouding 96 after door-plate 93 and outlet room, indoor set out the mounting rail 98 of wiretap, this outlet switch room shrouding 96 band pulling buckle, permissible
Convenient unlatching/close.This cabinet sidewall sets nameplate to identify product, and rear wall corner arranges the mounting structure of power distribution cabinet hanger formula,
To install the cabinet of power distribution cabinet, further explained below.
See Figure 12-Figure 13, for the power distribution cabinet wire structures of the embodiment of the present invention.Described power distribution cabinet uses upper, middle and lower to be divided into
The layout of three Room, wherein: top is service entrance switch room S1, is provided with a lead-in circuit breaker 915, is connected to kilowatt-hour meter with cable 921
Room S2;Middle part is kilowatt-hour meter room S2, is provided with some kilowatt-hour meters 916;Bottom is outlet switch room S3, is provided with earthing bar, protects
Card outlet ground connection is convenient.
As shown in Figure 12~Figure 13, kilowatt-hour meter room S2 is provided with electric mounting board 919, and kilowatt-hour meter 916 is installed on electrically peace
The front side of dress plate 919;And cabling after the plate that turnover cabling is electric mounting board 919 of power distribution cabinet, this contributes to saving further
Copper conductor consumption.Additionally, be provided with bus-bar mounting bar 922 and lower bus-bar mounting bar 923 on electric mounting board 919, converge
The two ends of stream row 918 are respectively installed on bus-bar mounting bar 922 and lower bus-bar mounting bar 923, it is simple to install, fix and converge
Stream row 918.
The present invention is provided with bus-bar at the rear side of power distribution cabinet, and lead-in circuit breaker 915 and kilowatt-hour meter 916 are with bus-bar 918
Connect.It is connected by wire between bus-bar 918 with lead-in circuit breaker 915;And the cable 917 inlet wire side of kilowatt-hour meter 916 and remittance
Stream row 918 connection, outgoing line side is connected with outlet air switch.Because of main by converging between lead-in circuit breaker 915 and kilowatt-hour meter 916
Stream row 918 connection, can save more copper conductor.So can reduce connection wire consumption, on the one hand escapable cost, on the other hand
Solve the difficulty of cabling bundle line.
Referring also to Figure 14~Figure 17, for using the more excellent example of power distribution cabinet line structure of the present invention.Described power distribution cabinet S
Upper, middle and lower is used to be divided into the layout of three Room, wherein: top is service entrance switch room S1;Middle part is kilowatt-hour meter room S2;Bottom is outlet
Switch gear room S3.Service entrance switch room S1, kilowatt-hour meter room S2 and S3 tri-Room, outlet switch room are separated from each other, and appearance looks elegant is the biggest
Side;Also allow for using the design of device, for being individually replaced some element, only need to change correlated parts and just can make
With, and without change on a large scale, a lot of design time can be saved, also bring great convenience to processing and manufacturing;Especially,
The operation stability of the most original power distribution cabinet of power distribution cabinet is more preferable, and safety improves.
As shown in Figure 14~Figure 17, the top board 924 of service entrance switch room S1 arranges some top board wire inlet/outlet holes 925, they
For top board circular hole and top board square hole, wherein: top board circular hole is through hole;Top board square hole is knock down hole.The base plate of outlet switch room S3
Arranging some base plate wire inlet/outlet holes 927 on 926, they are base plate circular hole and base plate square hole.When power distribution cabinet is that wall hanging is installed and enters
When outlet is bright pipe, the less circular hole of base plate or top board square hole can be knocked out, thus realize the bottom of power distribution cabinet or top or on
The line of the modes such as bottom combination;By the bigger square hole abate of base plate, then can realize the bottom that power distribution cabinet lands when installing and enter
Outlet;So can be to take into account the multiple mounting modes of power distribution cabinet, multiple line mode, thus the batch realizing power distribution cabinet is prefabricated
Produce and the peculation of user.
See Figure 18, for the schematic diagram of power distribution cabinet hanger of the present invention.This power distribution cabinet hanger be applicable to vertical power distribution cabinet and
Hanging power distribution cabinet, this power distribution cabinet hanger includes " L " template 914, the first side plate therein and the second side plate offers a lifting hole(eyelet)
9141 and multiple installing hole 9142, wherein can run through screw or bolt etc. securing member, thus be installed to join by " L " template 914
On the cabinet of electricity cabinet.Installing hole 9142 therein is multiple circular hole, or is multiple square hole, it is possible to be an oblong slots.So it is easy to
Described in adjusting " L " the assembling height of template 914 and power distribution cabinet, thus increase the versatility of mounting structure.This mounting structure
The first side plate and the second side plate can be folded by sheet metal or other material, be consequently formed one " L " template 914, then in " L " type
Lifting hole(eyelet) 9141 and installing hole 9142 is offered on first side plate of plate and the second side plate.Certainly, described " L " template 914 also may be used
Made by forging type, do not repeat them here.
In the present invention, the power distribution cabinet hanger 914 as mounting structure can be by different angle of assembling and vertical power distribution cabinet
Or hanging power distribution cabinet coordinates, thus meet the installation requirement of both power distribution cabinets:
See Figure 19, for the schematic diagram of vertical power distribution cabinet of the present invention.During the assembling of this vertical power distribution cabinet, by " L " template 914
One of them side plate is fixed on cabinet S, and another side plate stretches out outside cabinet, in order to wall or, compartment or other structure
Build thing sidewall to fix.The setting height(from bottom) of described " L " template 914 is upper and lower along concordant with cabinet S's, certainly may be used without other peace
Dress height.
See Figure 20, for the schematic diagram of the hanging power distribution cabinet of the present invention.During the assembling of this hanging power distribution cabinet, by the two of " L " template
Individual side plate is fixed on the angle of cabinet S, and makes the lifting hole(eyelet) 9141 on " L " template 914 expose cabinet S.After, can be by
Power distribution cabinet is hung on wall, compartment or other construction sidewall.So, just can be with vertical power distribution cabinet as long as changing setting angle
Or hanging power distribution cabinet coordinates, thus meet the installation requirement of both form power distribution cabinets, there is simple in construction, convenient, peace is installed
The advantages such as complete reliable, versatility is good.
Seeing Figure 21, the present invention connects electricity system block diagram.This power supply sets device 10 and includes photovoltaic power supply device 101, civil power
Electric supply installation 102, confession electrical switching device 103, photovoltaic power supply device 101 and mains power supply 102 are respectively connected to power supply conversion
Device 103 input, the outfan for electrical switching device 103 is connected to power distribution cabinet 9: the exportable 314V of photovoltaic power supply device 101 hands over
Stream electricity, it is connected to for electrical switching device 103 to select different power supply modes together with mains power supply 102, powers
Electric power after conversion equipment 103 conversion exports to electric control gear through power distribution cabinet 9, in order to drive motor 8.
See Figure 22, it is shown that the theory diagram of photovoltaic power supply device of the present invention.This photovoltaic power supply device 101 includes photovoltaic electric
Pond 1011, photovoltaic controller 1012, accumulator 1013, inverter circuit 1014, photovoltaic cell 1011 is preferably film photovoltaic cell,
Photovoltaic controller 1012 has charging circuit 10121, discharge circuit 10123 and control circuit 10122, and charging circuit 10121 connects
Between photovoltaic cell 1011 and accumulator 1013, discharge circuit 10123 is connected between accumulator 1013 and inverter circuit 1014,
Control circuit 10122 connects charging circuit 10121, discharge circuit 10123 and accumulator 1013 respectively, and inverter circuit 1014 is connected to
For electrical switching device 103.
In fig. 22, the core of 1011 photovoltaic power supply devices 101 of film photovoltaic cell, its effect is by the sun
Radianting capacity is converted to electric energy, or is sent in accumulator store, or pushing motor 8 works.The work of photovoltaic controller 1012
With being the duty controlling whole system, and accumulator is played the effect of additives for overcharge protection, over.Accumulator
The effect of 1013 is the electrical power storage sent by photovoltaic cell when there being illumination, discharges the when of to needs again.
See Figure 23, it is shown that the structural representation of film photovoltaic cell of the present invention.This film photovoltaic cell 1011 includes
One electro-conductive glass substrate 10111, deposit absorbent layer 10112, cushion 10113, conductive silver glue 10114 and the second electro-conductive glass base
The end 10115, wherein: the first electro-conductive glass substrate 10111, deposit absorbent layer 10112, cushion 10113, conductive silver glue 10114
From top to bottom set gradually with the second electro-conductive glass substrate 10115;First electro-conductive glass substrate 10111 and the second electro-conductive glass base
Extraction electrode (not shown) at the end 10115, draws anelectrode above the usually first electro-conductive glass substrate 10111, and second leads
Negative electrode is drawn above electricity substrate of glass 10115.
In Figure 23, the specification of above layers can be: first electro-conductive glass substrate the 10111, second electro-conductive glass substrate 10115
A length of 40mm, width is 15mm, and thickness is 3mm;Deposit absorbent layer 10112 is made for semiconductor nano material, a length of
30mm, width is 15mm, and thickness is 2 × 10-3mm;Cushion 10113 is In2S3Material is made, a length of 25mm, and width is
15mm, thickness is 4 × 10-3mm;The a length of 20mm of conductive silver glue 10114, width is 15mm, and thickness is 2 × 10-3mm.So
Arranging, material consumption is few, manufactures energy consumption low, and has excellent effect at the aspect of performance such as voltage improving battery.
See Figure 24, it is shown that the schematic block circuit diagram of controller of the present invention.This photovoltaic controller 1012 includes charging circuit
10121, discharge circuit 10123, control circuit 10122 and lightning protection circuit 10124, charging circuit 10121, discharge circuit 10123
In parallel with accumulator 1013, lightning protection circuit 10124 and accumulator 1013 are connected.Owing to adding lightning protection circuit 10124, flow through storage
The thunder-strike current of battery 1013 greatly reduces.
Lightning protection circuit 10124 in the present embodiment is specially lightning protection inductance, flows through accumulator after adding this lightning protection inductance
The thunder-strike current of 1013 greatly reduces;Meanwhile, the induction reactance of this lightning protection inductance is much larger than accumulator internal resistance, thus in accumulator 1013
The divided residual voltage in two ends also greatly reduces, and so also enhances the lightning protection capability of system.In addition, it is possible in charging circuit 10121, put
Electricity circuit 10123 is connected lightning protection inductance, respectively to improve lightning protection capability further.
See Figure 25, it is shown that the schematic block circuit diagram of accumulator of the present invention.This accumulator 1013 includes accumulator body
10131, cell managing device 10132, data/address bus 10133, auxiliary power supply bus 10135 and auxiliary charging control line
10134, wherein the positive pole of accumulator body 10131 is connected with cell managing device 10132 respectively with negative pole.Further illustrate
As follows.
In Figure 25, this cell managing device 10132 includes that positive pole and negative pole with accumulator body 10131 are respectively connected with
Detection control unit 101321 and the supplemental charging unit that is respectively connected with positive pole and the negative pole of accumulator body 10131
101322, detection control unit 201 is connected with supplemental charging unit 101322;Data/address bus 10133 and detection control unit
101321 are connected;Auxiliary power supply bus 10135 is connected with supplemental charging unit 101322;Auxiliary charging control line 10134
It is connected with the outfan of detection control unit 101321;Detection control unit 101321, detects accumulator body in real time
The running status of 10131, when the real-time voltage of accumulator body 10131 is less than threshold voltage, by supplemental charging unit
Accumulator body 10131 is charged by 101322 by auxiliary power supply bus 10135.
In the present embodiment, detection control unit 101321 can detect the state of accumulator body 10131, and fills in auxiliary
Under the coordinative role of electric unit 101322, this accumulator body 10131 is carried out discharge and recharge operation, so that accumulator is overall
It is held at preferable balance of voltage state.The most both accumulator can have been made to keep activity, the shape of the balance of voltage can have been reached again
State, is unlikely to occur overcharging or the state of charge less, which thereby enhances the life-span of accumulator.
See Figure 26, it is shown that the circuit theory diagrams of the inverter circuit of the present invention.This inverter circuit 1014 includes that power tube drives
Dynamic chip, this power tube driving chip is connected to microcontroller circuit (MCU/DSP), in order to according to the arteries and veins of microcontroller circuit output
Rush bandwidth modulation signals, drive corresponding power tube alternate conduction and shutoff.Concrete, described inverter circuit 1014 includes six
Individual power tube Q1~Q6, these six power tubes are divided into three groups, and every group power control exports to a cross streams.
The concrete connected mode of each power tube is: the source electrode of power tube Q1, Q2, Q3 connects one end of DC source jointly,
The drain electrode of power tube Q4, Q5, Q6 connects the other end of DC source jointly, the drain electrode of power tube Q1 and the company of the source electrode of power tube Q4
Connecing the U phase terminal for electrical switching device 103, the connection of the drain electrode of power tube Q2 and the source electrode of power tube Q5 is for electrical switching device
The V phase terminal of 103, the drain electrode of power tube Q3 and the source electrode of power tube Q6 connect the W phase terminal for electrical switching device 103;Power
The grid of pipe Q1, Q2, Q3, Q4, Q5, Q6 connects an outfan of power tube driving chip respectively, this power tube driving chip
Each input respectively by microcontroller circuit output pulse width regulate signal PWM1, PWM2, PWM3, PWM4, PWM5,
PWM6 Zhong mono-tunnel controls.Corresponding access diode D1~D6 between source electrode and the drain electrode of these six power tube Q1~Q6.
During start, microprocessor produces corresponding 6 road pulse width modulating signals according to the motor speed set, and i.e. drives
Signal PWM1~PWM6;By power tube driving chip drive inverter inverter circuit 1014 6 power tubes (MOSFET or
IGBT) Q1~Q6;The alternate conduction of these power tubes and shutoff, produce three-phase modulations waveform, and output voltage is adjustable, changeable frequency
Three-phase alternating current, input is to for electrical switching device 103.
3, control panel
See Figure 27, for the block diagram of control panel of the present invention.The input termination power distribution cabinet 9 of electric control gear 100, outfan
Connecing motor 8, this electric control gear 100, when power distribution cabinet 9 exports electric current, can drive the motor 8 as AC load to operate;This is automatically controlled
The two ends of device 100 are respectively connected to the first earth element 110 and the second earth element 120, in order to lightning current is introduced the earth, by
This improves the safety of system.
The present embodiment includes two grades of lightning protection circuits, and the specifically first earth element 110 is closed spark gap, connects
Between the input and earth terminal of electric control gear 120, lightning current of can releasing is up to 20KA;Second earth element 120 is for putting
Fulgurite, is connected between outfan and the earth terminal of electric control gear 100, enters the fraction thunder-strike current flowing through electric control gear 100
One step electric discharge, i.e. remakes a current limliting to the residual voltage entering motor 8 so that it is less than specified safety range.This just can make greatly
Part thunder-strike current is released by the first earth element 110 of electric control gear 100 input, and electric control gear 100 outfan sets
The second earth element 120 put then can make the residual voltage entering load less, thus desirably prevent load and be struck by lightning, and improves
Its safety in utilization, extends its service life.
First above-mentioned earth element the 110, second earth element 120 all may select Zinc-oxide piezoresistor or other type
Earth resistance replace, there is preferable lightning protection effect equally.When lightning current is bigger, Zinc-oxide piezoresistor is breakdown,
Lightning current flows into earth terminal through Zinc-oxide piezoresistor rapidly so that the residual voltage entering motor 8 is clamped at preset range
In.
See Figure 28, it is shown that the electrical principle block diagram of electric control gear of the present invention.In the major loop of this electric control gear 100, three
Phase power input line L1, L2, L3 are connected to the motor lines of the three phase electric machine of motor 8 through major loop circuit breaker Q F1, A.C. contactor KM
U1、V1、W1;Control in loop, control input termination three phase mains input line L2, the L3 of circuit breaker QF2, control loop and break
One terminals of the one output termination A.C. contactor KM coil of road device QF2, control another output of circuit breaker QF2
End connects another terminals of A.C. contactor KM coil through inching button SB (1-3).Press inching button SB, A.C. contactor
KM coil obtains electric adhesive, and the three-phase main contacts Guan Bi of A.C. contactor KM, motor obtains electric operation, and driven equipment works.Pin a little
The time of dynamic button SB is motor crawl duration of runs.Unclamping inching button SB, A.C. contactor KM coil blackout discharges, and hands over
The three-phase main contacts of stream catalyst KM disconnects, and motor dead electricity shuts down, and driven equipment stops.
In order to make lightning current flow through safely in the present embodiment, all connected by shielded cable between each component, its
Terminals are screwed, further explained below.
See Figure 29, represent the earthing mode of shielded cable 130.This shielded cable 130 is by cable core and cable shield
Layer is constituted, and this cable shield wraps cable core to reduce electromagnetic interference.
Figure 29 illustrates the shielded cable 130 mode of connection between power distribution cabinet 9 and electric control gear 100, this shielded cable 130
One end cable shield near power distribution cabinet 9 passes through the first earth element 110 ground connection, and shielded cable 130 is near electric control gear 100
Other end cable shield be directly grounded.
In practical power systems, the length of shielded cable 130 is generally higher than 20m, therefore can make the first earth element 110
It is connected to the position away from feeder ear (power distribution cabinet) 4m~6m.This first earth element 110 can be earth resistance, and particular type can be oxygen
Change (being certainly alternatively other element) such as zinc varistors.The resistance of this earth resistance and the cable shield of shielded cable 130
Equivalent resistance equal, it is also possible to choose separately according to practical situation.
Ground connection between motor 8 and electric control gear 100 can refer to aforesaid way, it may be assumed that shielded cable 130 is near electric control gear
One end cable shield of 100 passes through the second earth element 120 ground connection, and shielded cable 130 is near the other end cable screens of motor 8
Cover layer to be directly grounded.
Shielded cable in this embodiment, between electric control gear 100 and power distribution cabinet 9, between motor 8 and electric control gear 100
130 have employed 2 grounding schemes, thus have remained in that the good anti-jamming effectiveness of 2 grounding schemes of tradition;Due to shielding
Cable 130 passes through earth element ground connection near one end cable shield of power distribution cabinet 9, is conducive to earth current or interference limit
Stream, burns the danger of screen layer when thus avoid earth-current or disturb excessive, can also reach preferably electromagnetic compatibility simultaneously
Effect, and negative antenna effect will not be caused.
See Figure 30, represent the concrete structure of shielded cable.It is provided with many in the external protection 131 of this shielded cable 130
Root heart yearn 135, wherein every heart yearn is enclosed with inner protective layer 133;Especially, in external protection 131 layers be provided with cable shield
Layer 132, the inner side of inner protective layer 133 is provided with heart yearn screen layer 134.
Owing to heart yearn and the cable self of shielded cable 130 are respectively provided with screen layer, can suppress the interference between heart yearn and
Extraneous interference, specifically: the heart yearn of shielded cable all devises heart yearn screen layer, is conducive to generation between suppression heart yearn
Electromagnetic radiation, electrostatic coupling and electromagnetic induction;Cable self arranges cable shield, is conducive to the electromagnetic interference outside suppression;
These two aspects factor, preferably eliminates the produced interference of dynamical system shielded cable, advantageously ensures that the accuracy of data.
Preferably, the two ends of cable shield 132 and heart yearn screen layer 134 ground connection respectively, in order to effectively reduce interference source.
More preferably, it is to make cable shield 132 and heart yearn screen layer 134 be connect by the first earth element 110 near one end of power distribution cabinet 9
Ground, cable shield 132 and or heart yearn screen layer 134 be directly grounded near one end of motor 8.
Dust pelletizing system that the present invention provides and subsystem or parts, at least can improve dust removing effects, optimize power supply mode
Or ensureing that some aspect of equipment stable operation improves systematic function, its simple in construction, compact in design, cost is relatively low, has
Preferably market prospect.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.