CN105292596B - A kind of polysilicon packs metering control system - Google Patents

Abstract

The present invention provides a kind of polysilicon pack metering control system, broken polysilicon block is at least sieved as the block of 2 kinds of specifications using screening plant, the block of larger specification is delivered to weighing hopper using first material conveying device, and the block compared with small dimension is delivered to weighing hopper using second material conveying device, according to the weight of the block of larger specification currently stored in weighing hopper, first material conveying device is controlled to stop, and control second material conveying device to start, and the gross weight control second material conveying device of the block according to larger specification currently stored in weighing hopper and the block compared with small dimension stops, whole process is without manually participating in, realize that polysilicon packs metering automation, it ensure that the weight of single bag of polysilicon product reaches degree of precision, and reduce manual operation amount, reduce labor intensity, effectively reduce labour cost.

Description

A kind of polysilicon packs metering control system

Technical field

The present invention relates to polysilicon packing technique field, and in particular to a kind of polysilicon pack

Metering control system.

Background technology

After production of polysilicon is completed, obtained polysilicon product specification is larger, and size, specification difference are larger, it is impossible to Meet the requirement of finished product packing.Accordingly, it would be desirable to further be crushed, the block compared with small dimension is broken for, then by vibration Screening, the block of different size is distinguished, and the block after broken, screening finally is loaded into packaging bag again, and many by every bag The Weight control of crystal silicon product is in default weight.

The process of traditional polysilicon pack metering fails to realize full-automation, and packaging, metering weighing process are using half Automation equipment, i.e., by manually being packed, being weighed again after automatic pulverizing, vibrosieve polysilicon block, whole process is needed The artificial link for participating in pack, weighing, on the one hand, artificial operation is easily made a fault i.e. error, it is impossible to ensure single bag of product Weight accuracy；On the other hand, hand fit's breaking polycrystalline silicon, screening plant operation, labor intensity is high, workload is big.

Therefore, a kind of polysilicon pack measure control scheme is needed badly, to solve above-mentioned technical problem.

The content of the invention

The present invention packs metering control system for above shortcomings in the prior art there is provided a kind of polysilicon, uses To solve the problem of polysilicon pack measuring accuracy is poor, automaticity is low.

The present invention is in order to solve the above technical problems, adopt the following technical scheme that：

The present invention provides a kind of polysilicon pack metering control system, including：Screening plant and at least two material conveying dress Put, at least two device for transporting objects at least includes：First material conveying device and second material conveying device；Screening dress Put and connect respectively with first material conveying device and second material conveying device, broken polysilicon block can at least be sieved For the block of 2 kinds of specifications, the block of at least two kinds of specifications includes the block and the block compared with small dimension of larger specification, and will The block of larger specification is delivered to first material conveying device, and the block compared with small dimension is delivered into second material conveying dress Put, the system also includes：Controller and weighing hopper；

Weighing hopper connects with first material conveying device and second material conveying device respectively, and is connected with controller, uses In the weight of the block of the larger specification of the first material conveying device conveying of detection storage in the inner, and the weight is sent To controller；And the block and second material of the larger specification of the first material conveying device conveying of detection storage in the inner are defeated The gross weight of the block of the relatively small dimension of device conveying is sent, and the gross weight is sent to controller；

Controller is connected with first material conveying device and second material conveying device respectively, for controlling first material defeated Device is sent to start, and the weight of the block of the currently stored larger specification detected according to weighing hopper, control first material defeated Device is sent to stop, and control second material conveying device starts, and the currently stored larger rule detected according to weighing hopper The gross weight of the block of lattice and block compared with small dimension, control second material conveying device stops.

It is preferred that, first threshold and Second Threshold are preset with the controller, first threshold is less than Second Threshold；

The controller is specifically for, the weight of the block for the currently stored larger specification that weighing hopper is detected and the One threshold value compares, and when the weight of the block of currently stored larger specification is more than or equal to first threshold, controls described the One device for transporting objects stops, and controls the second material conveying device to start；And, currently deposited what weighing hopper was detected Storage larger specification block and compared with small dimension block gross weight compared with Second Threshold, when currently stored larger rule When the block of lattice and gross weight compared with the block of small dimension are equal to Second Threshold, the second material conveying device is controlled to stop.

Further, the system also includes the breaker for being used to crush polysilicon, and breaker is arranged at the sieve One end of separating device, sends broken polysilicon to screening plant；The first material conveying device includes：First feeding The block of device and larger specification for being conveyed to the screening plant is entered to be delivered to the first of the first feed appliance after row buffering again Aggregate bin；

First feed appliance is connected with the controller, for the control according to controller, will be conveyed via the first aggregate bin The block of larger specification be delivered to weighing hopper, or, stop the block of the larger specification conveyed via the first aggregate bin is defeated Deliver to weighing hopper.

It is preferred that, the second material conveying device includes：Second feed appliance, for being delayed to the block compared with small dimension The second aggregate bin of the second feed appliance is delivered to after punching again and defeated for the block compared with small dimension for conveying the screening plant Deliver to the conveyer of the second aggregate bin；

Second feed appliance is connected with the controller, for the control according to controller, by the block compared with small dimension Weighing hopper is delivered to, or, the block compared with small dimension is delivered to weighing hopper by stopping.

Further, it is provided with the baffle plate for being capable of closure or openness at the bottom end opening of weighing hopper；

The controller is additionally operable to, by the weight of the block of currently stored larger specification compared with first threshold than Before, whether the weight for judging the block of currently stored larger specification is zero, when the weight of the block of currently stored larger specification When amount is zero, the baffle plate closure is controlled, will be currently stored when the weight of the block of currently stored larger specification is not zero Block weight compared with first threshold.

Further, the system also includes：Packaging bag detection means, open the bag device, bag taking device and for carry open The support platform of bagging apparatus and bag taking device；

Support platform is arranged at the lower section of weighing hopper, and forms accommodation space, and open the bag device and bag taking device are arranged at branch Support on platform, and be placed in the accommodation space；

Support platform position corresponding with the bottom end opening of the weighing hopper is provided with through hole, and open the bag device is arranged at through hole Lower section, the diameter of through hole is equal or slightly larger than the diameter of the bottom end opening of the weighing hopper；

Packaging bag detection means is arranged at the first specified location below through hole, refers to for detecting packaging bag, and first Positioning is put when detecting packaging bag, and packaging bag detection signal is sent to the controller；First specified location refers to packaging Bag seated position；

The controller is connected with packaging bag detection means, open the bag device and bag taking device respectively, for when the bag taking cycle During arrival, control bag taking device carries packaging bag to the first specified location from the second specified location；And, when receiving packaging During the packaging bag detection signal that bag detection means is sent, control open the bag device is opened and fixed packet pack, when not receiving packaging During the packaging bag detection signal that bag detection means is sent, control bag taking device carries packaging bag to first from the second specified location Specified location.

Further, counter is also preset with the controller, the initial value of counter is to be preset with 0, counter 3rd threshold value；

The controller is additionally operable to, when the packaging bag for not receiving the transmission of packaging bag detection means detects signal, order meter Number device adds 1, and the value of counter is compared with the 3rd threshold value, when the value of counter is equal to three threshold values, controls the sieve Separating device, first material conveying device, second material conveying device and bag taking device are out of service；When the value of counter is less than the During three threshold values, continue to determine whether to receive the packaging bag detection signal of packaging bag detection means transmission, when receiving packaging bag During the packaging bag detection signal that detection means is sent, by counter O reset.

It is preferred that, the open the bag device includes：The open bag sucker being placed in the accommodation space for a pair and a pair it is accommodating Clip in the accommodation space, open bag sucker and clip are fixedly connected with support platform respectively；

The bag taking device includes：The mechanical arm that is placed in the accommodation space for a pair and it is placed in for a pair described accommodating Bag taking sucker in space, 1 bag taking sucker is arranged on the top of 1 mechanical arm, and mechanical arm is fixedly arranged in support platform, and with The controller is connected；

The system also includes vavuum pump, and vavuum pump is connected with open bag sucker, bag taking sucker and the controller respectively, uses In the control according to the controller, respectively to open bag sucker and bag taking suction disc vacuum pumping；

The controller is specifically for when the packaging bag for receiving the transmission of packaging bag detection means detects signal, controlling Open bag sucker projects forwardly to the first specified location, with the two sides for the packaging bag of fitting respectively, and control vavuum pump is taken out to open bag sucker Vacuum, so that open bag sucker resets, and sends feedback signal to controller after the reset, and controls clip to clamp the two of packaging bag End, is packed with fixed packet；When receiving the feedback signal of open bag sucker transmission, control vavuum pump stops to bag taking sucker and opened Bag suction disc vacuum pumping, and the reset of control machinery arm；When the packaging bag for not receiving the transmission of packaging bag detection means detects signal, Control machinery arm drops to the second specified location, and controls vavuum pump to bag taking suction disc vacuum pumping, with horizontal draw package bag, with And, control machinery arm level carries the packaging bag and rises to the first specified location, and is rotated by 90 °, so that packaging bag opening court On.

Further, the system also includes blanking sleeve, and blanking sleeve is arranged at the position of the through hole of support platform, energy It is enough to be lifted in the accommodation space；

The controller is connected with blanking sleeve, is additionally operable to, and after control second material conveying device stops, judging The feedback signal of open bag sucker transmission whether is received in this metering cycle, is sent when receiving open bag sucker in this metering cycle Feedback signal when, control blanking sleeve drop to the first specified location, to stretch into the packaging bag of opening, and control the baffle plate Open, the block of weighing hopper memory storage is delivered in the packaging bag of opening；Wherein, the metering cycle refers to, described Baffle plate is closed into the duration of unlatching.

It is preferred that, the screening plant includes：Screening bed and at least one are arranged at the sieve plate on screening bed, the sieve plate Broken polysilicon block can at least be sieved the block for larger specification and the block compared with small dimension.

The present invention is at least sieved broken polysilicon block as the block of 2 kinds of specifications using screening plant, utilizes first The block of larger specification is delivered to weighing hopper by device for transporting objects, and using second material conveying device by compared with the block of small dimension Material is delivered to weighing hopper, according to the weight of the block of larger specification currently stored in weighing hopper, control first material conveying dress Put stopping, and control second material conveying device to start, and block according to larger specification currently stored in weighing hopper and compared with The gross weight control second material conveying device of the block of small dimension stops, and whole process realizes polysilicon without manually participating in Metering automation is packed, ensure that the weight of single bag of polysilicon product reaches degree of precision, and reduces manual operation amount, is reduced Labor intensity, effectively reduces labour cost.

Brief description of the drawings

Fig. 1 is the top view that polysilicon provided in an embodiment of the present invention packs metering control system；

Fig. 2 is the front view that polysilicon provided in an embodiment of the present invention packs metering control system；

Fig. 3 is the structural representation of polysilicon open the bag device provided in an embodiment of the present invention and bag taking device；

Fig. 4 is one of polysilicon provided in an embodiment of the present invention pack measurement control method schematic flow sheet；

Fig. 5 is that polysilicon provided in an embodiment of the present invention packs the two of measurement control method schematic flow sheet；

Fig. 6 is bag taking provided in an embodiment of the present invention, opens the schematic flow sheet of bag.

Embodiment

Below in conjunction with the accompanying drawing in the present invention, clear, complete description is carried out to the technical scheme in the present invention, is shown So, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the implementation in the present invention Example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made all belongs to In the scope of protection of the invention.

It is one very big in terms of every bag of polysilicon product weight is controlled due to the shape, not of uniform size of polysilicon Technical barrier, polysilicon is in irregular, in bagging process when pack is close to predetermined weight, if toward the bulk that drops in packaging bag Block, then now SK WT can exceed specification requirement scope.In order to by every bag of polysilicon Weight control in defined weight In the range of, polysilicon is reasonably divided into after the block of different size respectively to enter again by the present invention according to the size of polysilicon Row is weighed, such as polysilicon can be divided into the block of two kinds of different sizes, i.e., the block and the block compared with small dimension of larger specification Material, weighed respectively by the block of larger specification and compared with the block of small dimension, with before pack by controlling different size respectively The quantity of block, so as to accurately control the gross weight of single bag of polysilicon product.

Fig. 1 is that polysilicon provided in an embodiment of the present invention packs metering control system configuration diagram, as shown in figure 1, should Control system includes：Screening plant and at least two device for transporting objects.Preferably, the control system also includes for breaking The breaker 1 of broken polysilicon.Breaker 1 is arranged at one end of screening plant, sends broken polysilicon to screening Device.It is preferred that, breaker 1 can select jaw crusher, and jaw crusher can be by breaking polycrystalline silicon into block block Material, the size of the block is different, and the polysilicon block after crushing is fallen on screening plant.At least two material is defeated Device is sent at least to include：First material conveying device and second material conveying device.Screening plant is conveyed with first material respectively Device is connected with second material conveying device, and the polysilicon block that can crush breaker 1 is at least sieved as 2 kinds of specifications Polysilicon block material screen can be divided into the block of 2 kinds of specifications, 3 kinds of specifications or more specification by block, such as screening plant.But from section The angle of about cost and combination actual effect is set out, and it is 2 that preferably the broken polysilicon block of breaker 1, which is sized device screening, The block of kind of specification, the block of 2 kinds of specifications is specifically to be divided according to the size of polysilicon, can specifically be divided into compared with The block and the block compared with small dimension of big specification, by setting a dimensional standard, what it is more than or equal to the dimensional standard is The block of larger specification, less than the dimensional standard as compared with the block of small dimension.Such as, the block for setting larger specification is specific Refer to that size is more than or equal to 25mm block, the block compared with small dimension specifically refers to the block that size is less than 25mm.Will be larger The block of specification is delivered to first material conveying device, and the block compared with small dimension is delivered into second material conveying device.The One device for transporting objects is used for the block for conveying larger specification, and second material conveying device is used to convey the block compared with small dimension.

Screening plant can include：Screening bed 8 and at least one are arranged at the sieve plate on screening bed 8, in the embodiment of the present invention In, it is provided with 2 sieve plates, i.e. the first sieve plate 81 and the second sieve plate 82 on screening bed 8.The diameter of the sieve aperture of first sieve plate 81 is more than The diameter of the sieve aperture of second sieve plate 82, the diameter range of the sieve aperture of the first sieve plate 81 is 20-30mm, the sieve aperture of the second sieve plate 82 Diameter range is below 5mm.It is preferred that, the diameter of the sieve aperture of the first sieve plate 81 can be 25mm, the sieve aperture of the second sieve plate 82 Diameter can be 3mm.The sieve plate 81 of second sieve plate 82 to the first sieves the polysilicon after bed 8 will can be crushed adjacent to breaker 1 Block is delivered to the other end from that end close to breaker 1.Specifically, screening bed 8 is inclined under breaker 1 Side.

The system also includes：Controller (not illustrated in figure) and weighing hopper 2.

Weighing hopper 2 connects with first material conveying device and second material conveying device respectively, for storing first material The block of the larger specification of conveying device conveying, and store the block of the relatively small dimension of second material conveying device conveying；And, The weight of the currently stored block of detection, and the weight of the block detected is sent to controller.

Controller is connected with weighing hopper 2, first material conveying device and second material conveying device respectively, for controlling the One device for transporting objects starts, and the weight of the block of the currently stored larger specification detected according to weighing hopper 2, control the One device for transporting objects stops, and control second material conveying device starts；And, according to weighing hopper detect it is currently stored The gross weight of the block of larger specification and block compared with small dimension, control second material conveying device stops.

Preferably, controller is also connected with screening plant, and controller can be according to the control instruction of user control screening dress The start and stop put.

Controller can be real from PLC (Programmable Logic Controller, programmable logic controller (PLC)) It is existing.

First threshold and Second Threshold are preset with controller, Second Threshold is set to the gross weight of single bag an of polysilicon product Amount, first threshold is used for the higher limit as the weight of the block of larger specification in a polysilicon product packaging bag.First threshold Value and Second Threshold can specifically be set according to the actual pack of polysilicon product requirement, and preferably first threshold is slightly less than second Threshold value.

The diameter of the block of larger specification is more than or equal to 25mm, and the diameter compared with the block of small dimension is less than 25mm and is more than Or equal to 3mm, generally, due to larger specification block weight in 0.02-0.5kg, the weight compared with the block of small dimension exists 0.003-0.02kg, it is preferred, therefore, that first threshold is disposed proximate to Second Threshold but not too close to Second Threshold, First threshold can be such as set to 9.5-9.8kg, and Second Threshold is set to 10-10.5kg, can either so be taken into account The efficiency of polysilicon pack, will not cause the weight of the block of larger specification when the first block to larger specification is weighed again Second Threshold can not be just met or exceeded easily.

Also predeterminable in controller to have the bag taking cycle, controller can carry out bag taking according to bag taking periodic Control bag taking device Operation.It is preferred that, the bag taking cycle be could be arranged to 40-60 seconds, and the bag taking cycle can be adjusted according to the speed of weighing of weighing hopper 2 It is whole.

It is also predeterminable in controller to have counter, the number of times for recording bag taking failure, the initial value of counter is 0, is taken Bag fails 1 time, then the value of counter adds 1.The 3rd threshold value is preset with counter, is taken as polysilicon pack metering control system The upper limit of the number of times of bag failure, when the number of times of bag taking failure reaches three threshold values, controller control polysilicon pack metering control System-down processed.It is preferred that, the 3rd threshold value N could be arranged to 3.When the value of counter is less than three threshold values, if bag taking again Success, then counter O reset.

Specifically, the controller is specifically for the block for the currently stored larger specification for detecting weighing hopper Weight is compared with first threshold, when the weight of the block of currently stored larger specification is more than or equal to first threshold, control Make the first material conveying device to stop, and control the second material conveying device to start；And, weighing hopper is detected Currently stored larger specification block and compared with small dimension block gross weight compared with Second Threshold, when currently stored Larger specification block and when being equal to Second Threshold compared with the gross weight of the block of small dimension, control second material conveying dress Put stopping.

Present system conveys the block of larger specification first with first material conveying device, until reaching first threshold Stop conveying during weight, recycle the conveying of second material conveying device compared with the block of small dimension, the weight until reaching Second Threshold Stop conveying during amount, whole polysilicon pack measure control process without manually participating in, realize polysilicon pack metering from Dynamicization, ensure that the weight of single bag of polysilicon product reaches degree of precision, and reduce manual operation amount, reduce labor intensity, Effectively reduce labour cost.

Below in conjunction with Fig. 1 and Fig. 2, the structure to the packed metering control system of polysilicon is described in detail, such as Fig. 1,2 institutes Show, first material conveying device can include：First feed appliance 3 and the first aggregate bin 4, the first aggregate bin 4 are used to fill screening The block for putting the larger specification of conveying is entered it is transported to the first feed appliance 3 respectively again after row buffering.

First aggregate bin 4 is shaped as infundibulate, and its top and bottom are equipped with opening, and its top end opening area is big, Bottom end opening area is small.First aggregate bin 4 is arranged at the one end of screening plant away from breaker 1, and the top of the first aggregate bin 4 End opening is arranged at the lower section of screening plant, and the bottom end opening of the first aggregate bin 4 is arranged at the upper of one end of the first feed appliance 3 Side, the other end of the first feed appliance 3 is arranged at the top of the top end opening of weighing hopper 2.

First feed appliance 3 is connected with controller, for the control according to controller, by what is conveyed via the first aggregate bin 4 The block of larger specification is delivered to weighing hopper 2, or, stopping action stopping the larger rule that will be conveyed via the first aggregate bin 4 The block of lattice is delivered to weighing hopper 2.

It is preferred that, the first feed appliance 3 can select vibration feeder.The vibration produced by vibration feeder, to cause The block of its larger specification transported can be uniformly distributed on the first feed appliance.

Second material conveying device can include：Second feed appliance 5, the second aggregate bin 6 and conveyer 7, conveyer 7 are used for The block for the relatively small dimension that screening plant is conveyed is delivered to the second aggregate bin 6, and the second aggregate bin 6 is used to convey conveyer 7 The block of relatively small dimension be transported to the second feed appliance 5.Second aggregate bin 6 is shaped as infundibulate, and its top and bottom are all provided with There is opening, and its top end opening area is big, bottom end opening area is small.

One end of conveyer 7 is arranged at the lower section of screening plant, and the other end is arranged at the top end opening of the second aggregate bin 6 Top.One end of second feed appliance 5 is arranged at the lower section of the bottom end opening of the second aggregate bin 6, and the other end is arranged at weighing hopper 2 The top of top end opening.

Second feed appliance 5 is connected with controller, and for the control according to controller, the block compared with small dimension is conveyed To weighing hopper 2, or, stopping action stopping the block compared with small dimension being delivered to weighing hopper 2.

First aggregate bin 4 and the second aggregate bin 6 mainly play cushioning effect, that is, prevent the block transported out from screening plant Accumulated caused by making weighing hopper 2 have little time to weigh because excessive, eventually influence the efficiency of broken work.

In embodiments of the present invention, conveyer 7 includes the first conveyer 71 and second conveyor 72, the He of the first conveyer 71 Second conveyor 72 is in 90 degree of settings, it is preferred that the first conveyer 71 and second conveyor 72 can select belt conveyor.The One end of one conveyer 71 is arranged at the lower section of screening plant, and the other end is connected with one end of second conveyor 72, the second conveying The other end of machine 72 is arranged at the top of the top end opening of the second aggregate bin 6.

It should be noted that second conveyor 72 can also be omitted, i.e., one end of the first conveyer 71 is arranged at screening The lower section of device, the other end is arranged at the top of the top end opening of the second aggregate bin 6.

One end of conveyer 7 (i.e. the first conveyer 71) is arranged at the lower section of the first sieve plate 81, and diameter is less than 25mm and big It can be fallen on from the sieve aperture of the first sieve plate 81 on first conveyer 71 in or equal to 3mm block.

One end of screening bed 8 is arranged at the lower section of breaker 1, and the other end is arranged at the top end opening of the first aggregate bin 4 Top, diameter be more than or equal to 25mm block can from screening bed 8 one end fall into the first aggregate bin 4.

It is preferred that, the lower section of the second sieve plate 82 is additionally provided with powder conveyer 9, and powder conveyer 9 can be collected with powder Device (not illustrated in figure) is connected.The pSi powder that diameter is less than 3mm can fall on powder from the sieve aperture of the second sieve plate 82 On conveyer 9, and it is transported in powder collection device, so that pSi powder further be recycled.

It should be noted that in order to realize more accurate measure control, powder conveyer 9 can also be utilized by block powder It is delivered in weighing hopper 2, and default 4th threshold value (the 4th threshold value is less than Second Threshold and more than first threshold) in the controller, When the gross weight of block in the larger specification stored before judging and the block compared with small dimension is more than or equal to four threshold values, control Second material conveying device processed stops, and controls powder conveyer 9 to start, to continue the transfer block feed powder end into weighing hopper 2, Until the gross weight of the block, the block compared with small dimension and block powder of the larger specification of the memory storage of weighing hopper 2 reaches the second threshold During value, control powder conveyer 9 stops.Controller realizes that the specific implementation of above-mentioned control and control first material conveying are filled Put identical with the process of second material conveying device, will not be repeated here.

It is preferred that, the baffle plate (not illustrated in figure) for being capable of closure or openness is provided with the bottom end opening of weighing hopper 2.

Controller is additionally operable to, before the weight of the block of currently stored larger specification is compared with first threshold, Whether the weight for judging the currently stored block of weighing hopper 2 is zero, when the weight of the currently stored block of weighing hopper 2 is zero, The baffle plate is controlled to close, so as in the memory storage block of weighing hopper 2.When the weight of the currently stored block of weighing hopper 2 is not zero When, the weight of currently stored block is compared with (weight of the block of i.e. currently stored larger specification) first threshold.

In order to further realize the automation of polysilicon product pack, bag taking, as shown in figure 3, polysilicon pack metering Control system can also include：Packaging bag detection means 10, open the bag device, bag taking device and support platform 11, support platform 11 For carrying open the bag device and bag taking device.

Support platform 11 is arranged at the lower section of weighing hopper 2, and forms accommodation space, and open the bag device and bag taking device are arranged at In support platform, and it is placed in the accommodation space.

Support platform position corresponding with the bottom end opening of weighing hopper 2 is provided with through hole 111, and open the bag device is arranged at through hole 111 lower section, the diameter of through hole 111 is equal or slightly larger than the diameter of the bottom end opening of weighing hopper 2.

Packaging bag detection means 10 is arranged at the first specified location of the lower section of through hole 111, for detecting the first specified location The presence or absence of upper packaging bag, and when the first specified location detects packaging bag, packaging bag detection signal is sent to controller.First Specified location refers to packaging bag seated position.First specified location can specifically be arranged on the lower section of weighing hopper.

Controller is connected with packaging bag detection means 10, open the bag device and bag taking device respectively, for being arrived when the bag taking cycle Up to when, control bag taking device packaging bag is carried to the first specified location from the second specified location；And, when receiving packaging bag During the packaging bag detection signal that detection means 10 is sent, control open the bag device is opened and fixed packet pack；When not receiving packaging During the packaging bag detection signal that bag detection means 10 is sent, control bag taking device carries packaging bag to the from the second specified location One specified location.Second specified location refers to, deposits the position of stand-by packaging bag, it is preferred that can be deposited in the second specified location Put 400-500 packaging bags stand-by.

It is preferred that, packaging bag detection means 10 can be realized from photoelectric sensor, when packaging bag is in the first specified location When in place, the light beam of the transmitting terminal transmitting of packaging bag detection means 10, accordingly, packaging bag detection means 10 are blocked in packaging bag Receiving terminal can not receive light beam, so as to send packaging bag detection signal to controller.The operation principle and work of photoelectric sensor Belong to prior art as process, will not be repeated here.

It should be noted that the position in whole polysilicon pack metering control system with polysilicon contact, for example, screening Device, conveyer 7, the first feed appliance 3, the second feed appliance 5, the first aggregate bin 4, the second aggregate bin 6, weighing hopper 2, blanking sleeve 17 grade parts, are covered with PU materials, liner PU plates, to prevent from causing metallic pollution to polysilicon product.

Below in conjunction with Fig. 3, the structure to open the bag device and bag taking device is described in detail.As shown in figure 3, open the bag device Including：Open bag sucker 12 that a pair are placed in the accommodation space and the clip 13 being placed in for a pair in the accommodation space, Open bag sucker 12 and clip 13 are fixedly connected with support platform 11 respectively.

The bag taking device includes：The mechanical arm 14 that is placed in the accommodation space for a pair and it is placed in the appearance for a pair Interior bag taking sucker 15 is empty, and a bag taking sucker 15 is arranged on the top of a mechanical arm 14, mechanical arm 14 is fixedly arranged on In support platform 11, and it is connected with controller.

The system also include vavuum pump 16, vavuum pump 16 respectively with open bag sucker 12, bag taking sucker 15 and controller phase Even, for the control according to controller, open bag sucker 12 and bag taking sucker 15 are vacuumized respectively.

Controller is specifically for when the packaging bag for receiving the transmission of packaging bag detection means 10 detects signal, control is opened Bag sucker 12 projects forwardly to the first specified location, and the two sides being oppositely arranged with the packaging bag of fitting respectively controls 16 pairs of vavuum pump Open bag sucker 12 is vacuumized, so that open bag sucker resets (packaging bag is to be opened after open bag sucker resets), so that opening bag suction Disk leaves the first specified location, while controlling clip 13 to clamp the two ends of packaging bag, is packed with fixed packet.Open bag sucker 12 is multiple Feedback signal is sent to controller behind position, when controller receives the feedback signal of the transmission of open bag sucker 12, vavuum pump is controlled 16 stop vacuumizing bag taking sucker and open bag sucker, and control machinery arm 14 resets, and are operated with preparing next bag taking, mechanical arm 14 resets refer to that mechanical arm 14 returns back to the second specified location.When controller does not receive the bag of the transmission of packaging bag detection means 10 During pack detection signal, control machinery arm 14 drops to the second specified location, and controls vavuum pump 16 to take out very bag taking sucker 15 Sky, a stand-by packaging bag in the second specified location is drawn with level；And, the level of control machinery arm 14 is carried to have drawn and treated The first specified location is risen to the bag taking sucker 15 of packaging bag, and is rotated by 90 °, so that packaging bag is opening up.

The control of the vacuum of open bag sucker 12 can choose the vavuum pump of different capacity according to demand, it is preferred that Ke Yixuan The vavuum pump for being 2.2-3.5KW with power, can make open a bag success rate reach 99.5%.

In order to further facilitate pack, polysilicon pack metering control system can also include blanking sleeve 17, blanking Sleeve 17 is arranged at the position of the through hole 111 of support platform 11, can be lifted in the accommodation space.

Controller is connected with blanking sleeve 17, and controller is additionally operable to, and it is acted in control second material conveying device stopping Afterwards, judge the feedback signal that open bag sucker 12 is sent whether is received in this metering cycle, when the reception in this metering cycle During the feedback signal sent to open bag sucker 12, control blanking sleeve 17 drops to the first specified location, to stretch into the bag of opening Pack, and control the baffle plate of the weighing hopper to open, the block of weighing hopper memory storage is delivered in the packaging bag of opening. Wherein, the metering cycle refers to, the baffle plate is closed into the duration of unlatching.

Controller can control vavuum pump 16 and mechanical arm 14, drive bag taking sucker 15 to pick up and be stored in the second specified location 1 stand-by packaging bag, and reach the first specified location it is in place (be rotated by 90 ° so that packaging bag it is opening up), then control Vavuum pump 16 causes open bag sucker 12 inhales packaging bag to open, and is fixed by clip 13.Afterwards, controller control blanking sleeve 17 is stretched In the packaging bag for entering opening.

When the weight of the block of the memory storage of weighing hopper 2 reaches Second Threshold, controller controls the bottom end opening of weighing hopper 2 The baffle plate at place is opened, and polysilicon block is fallen into packaging bag by blanking sleeve 17, after pack is completed, the packaging equipped with block Bag can deliver to sealing post by belt conveyor.So worked continuously, improve production efficiency.

Further, polysilicon pack metering control system also there is stoppage protection function, i.e. controller to be additionally operable to, when When not receiving the packaging bag detection signal of the transmission of packaging bag detection means 10, counter is made plus 1, and by the value of counter and the Three threshold values compare, and when the value of counter is equal to three threshold values, control the breaker 1, screening plant, first material defeated Send device, second material conveying device and bag taking device out of service.When counter value be less than three threshold values when, controller after The continuous packaging bag detection signal for judging whether to receive the transmission of packaging bag detection means 10, sends out when receiving packaging bag detection means During the packaging bag detection signal sent, by counter O reset.

By setting above-mentioned stoppage protection function, it can be broken down in bag taking device, or, deposited in the second specified location In the case that the stand-by packaging bag put is used up, upstream equipment is shut down in time, it is to avoid the block after broken directly drops in system It is outside.

In embodiments of the present invention, the first feed appliance 6, second material conveying device, open the bag device, bag taking device, support Platform 11, weighing hopper 2, blanking sleeve 17, these above-mentioned parts can each set 2 groups or more, when these parts use 2 groups When, it is separately positioned on the both sides of screening plant, while carrying out polysilicon pack measure control, and carries out bagging operations simultaneously, Further to improve operating efficiency.

Below in conjunction with Fig. 4, the polysilicon pack measure control flow provided the present invention is described in detail.Such as Fig. 4 institutes Show, the embodiment of the present invention provides a kind of polysilicon pack measurement control method, this method is applied to foregoing polysilicon pack meter In amount control system, comprise the following steps：

Step 401, controller can control the start and stop of screening plant according to control instruction, and screening plant can will be broken Polysilicon block is at least sieved as the block of 2 kinds of specifications, and the block of larger specification is delivered into first material conveying device, and Block compared with small dimension is delivered to second material conveying device.

Specifically, user sends control instruction to controller, to start polysilicon pack metering control system, controller can With according to the control instruction, start screening plant, breaker 1, first material conveying device, open the bag device, bag taking device and Vavuum pump 16.

Step 402, the block of larger specification is delivered to weighing hopper by controller control first material conveying device, and is stored In in weighing hopper.

Step 403, weighing hopper detects the weight of the block of currently stored larger specification, and by the block of larger specification Weight is sent to controller.

Step 404, the weight of the block for the currently stored larger specification that controller is detected according to weighing hopper, control the One device for transporting objects stops, and controls second material conveying device to start.

Specifically, when the block of the larger specification of the memory storage of weighing hopper 2 reaches constant weight, controller controls the first thing Material conveying device stops, and to stop continuing to weighing hopper 2 conveying the block of larger specification, and controls second material conveying device to open It is dynamic, the block compared with small dimension is delivered into weighing hopper 2, and together it is stored in weighing hopper 2 with the block of larger specification.

Step 405, weighing hopper detects the gross weight of the block of currently stored larger specification and the block compared with small dimension, and The gross weight is sent to controller.

Step 406, the gross weight that controller is detected according to weighing hopper, control second material conveying device stops.

Specifically, when the block of larger specification in weighing hopper 2 and the gross weight compared with the block of small dimension reach constant weight When, controller control second material conveying device stops, so that the accurately weight of the block of control weighing hopper memory storage.

The present invention is at least sieved broken polysilicon block as the block of 2 kinds of specifications using screening plant, utilizes first The block of larger specification is delivered to weighing hopper by device for transporting objects, and using second material conveying device by compared with the block of small dimension Material is delivered to weighing hopper, according to the weight of the block of larger specification currently stored in weighing hopper, control first material conveying dress Put stopping, and control second material conveying device to start, and block according to larger specification currently stored in weighing hopper and compared with The gross weight control second material conveying device of the block of small dimension stops, and whole process realizes polysilicon without manually participating in Metering automation is packed, ensure that the weight of single bag of polysilicon product reaches degree of precision, and reduces manual operation amount, is reduced Labor intensity, effectively reduces labour cost.

Below in conjunction with Fig. 1,2,3 and Fig. 5, the production of polysilicon flow that the present invention is provided is described in detail, such as Fig. 5 institutes Show, the production of polysilicon flow comprises the following steps：

Step 501-502, controller controls screening plant according to control instruction, and broken polysilicon block is at least sieved For the block of 2 kinds of specifications, the block of larger specification is delivered to first material conveying device by screening plant, so that first material is defeated Send device that the block of larger specification is delivered in weighing hopper and stored, and it is defeated that the block compared with small dimension is delivered into second material Send device.

Specifically, user sends control instruction to controller, to start polysilicon pack metering control system, controller can According to the control instruction, to start screening bed 8, the feed appliance 6 of breaker 1 and first, it is preferred that controller can first start sieve Divide bed 8, restart breaker 1, to prevent the block after crushing from being accumulated on screening bed 8, influence crushing for follow-up polysilicon.

Controller can also control bag taking device and open the bag device successively according to control instruction, by starting vavuum pump 16 Carry out bag taking operation and open bag operation, bag taking and open the flow of bag and be subsequently described in detail again.

Step 503, weighing hopper detects the weight of currently stored block, and the weight detected is sent into controller.

Specifically, due to now only opening first material conveying device, second material conveying device is not yet turned on, because This, the block of the memory storage of weighing hopper 2 is the block of larger specification, and the weight now detected is also the weight of larger block.

Step 504, controller judges whether the weight of currently stored block is 0, if the weight of currently stored block For 0, then step 505 is performed；If the weight of currently stored block is not 0, step 506 is performed.

If specifically, wanting the weight of the weight of the block by controlling larger specification respectively and the block compared with small dimension, coming Realize and accurately control the weight of single bag of polysilicon product, it is necessary to which weighing hopper 2 has an interim store function, weighing hopper 2 by The baffle plate for being capable of closure or openness at bottom end opening realizes the function of interim storage block.

If the weight of currently stored block is 0, illustrates that now baffle plate is in opening, weighing hopper 2 and be not stored with Block, then perform step 505, controlling baffle plate closure.If the weight of currently stored block is not 0, illustrate that now baffle plate is in Be stored with a certain amount of block in closure state, weighing hopper 2, then step 506 is performed, to carry out follow-up judgement.

Step 505, the baffle plate closure at the bottom end opening of controller control weighing hopper.

Step 506, controller compares the weight of currently stored block with first threshold, if currently stored block Weight be more than or equal to first threshold, then perform step 507；Otherwise, any operation is not done, continues with first material conveying Device phase weighing hopper 2 conveys the block of larger specification, and performs step 503.

Specifically, whether controller, which reaches first threshold by monitoring the weight of the block of weighing hopper memory storage, controls One device for transporting objects stops, if the weight of currently stored block (block of i.e. larger specification) is more than or equal to the first threshold Value, for example, more than or equal to 9.5-9.8kg, illustrating the weight for now having reached the block of larger specification in single bag of polysilicon product The upper limit is measured, if continuing to convey fairly large block, possibly the gross weight of single bag of polysilicon product can not be ensured in the second threshold Within the scope of value, therefore, step 507 is performed.If the weight of currently stored block (block of i.e. larger specification) is less than the One threshold value, then illustrate the gross weight (Second Threshold) for being significantly less weight than single bag of polysilicon product of current block, even if continuing The fairly large block of conveying, also exceeds the risk of Second Threshold in the absence of gross weight, therefore, and any operation is not done, continues profit The block of larger specification is conveyed with first material conveying device phase weighing hopper 2, and performs step 503.

Step 507, controller control first material conveying device stops, and controls second material conveying device to start.

Specifically, when the weight of block currently stored in weighing hopper 2 is more than or equal to first threshold, controller control First material conveying device stops, that is, stops conveying the block of larger specification to weighing hopper 2, and control second material conveying device Start, to continue to convey the block compared with small dimension to weighing hopper 2 using second material conveying device.

Step 508, the gross weight and the of block of the controller by the block of currently stored larger specification and compared with small dimension Two threshold values compare, if the block of currently stored larger specification and the gross weight compared with the block of small dimension are equal to Second Threshold, Step 509 is then performed, otherwise, the state of second material conveying device operation is continued to, and perform step 508.

Specifically, controller judges the block and the block compared with small dimension of larger specification currently stored in weighing hopper 2 Whether gross weight has reached Second Threshold, if reaching Second Threshold, illustrates block (the larger specification of the now memory storage of weighing hopper 2 Block and the block compared with small dimension) weight met the weight of single bag of polysilicon product, then step 509 is performed, if not yet Second Threshold is reached, then continues with second material conveying device and block compared with small dimension is conveyed to weighing hopper 2.

Step 509, controller control second material conveying device stops.

If specifically, controller judges the block and the block compared with small dimension of larger specification currently stored in weighing hopper 2 The gross weight of material has reached Second Threshold, then controls the second feed appliance 5 out of service, so that second material conveying device is stopped Only.

It should be noted that after system is opened, bag taking device can carry out bag taking operation, and bag taking operation can be according to bag taking Cycle is carried out, and can start bag taking device when starting screening plant or starting breaker.

Below in conjunction with Fig. 3 and Fig. 6, metering control system bag taking is packed to polysilicon, the flow of pack is described in detail, As shown in fig. 6, the flow comprises the following steps：

Step 601, when reaching in the bag taking cycle, controller control bag taking device carries packaging bag from the second specified location To the first specified location.

Specifically, when reaching in the bag taking cycle, control machinery arm 14 drops to the second specified location, and controls vavuum pump 16 Bag taking sucker 15 is vacuumized, with horizontal draw package bag, and, the level of control machinery arm 14 carries the packaging bag and risen to First specified location, and be rotated by 90 °, so that packaging bag is opening up.

Step 602, packaging bag detection means detection packaging bag, when detecting packaging bag in the first specified location, to control Device processed sends packaging bag detection signal.

Specifically, in the first specified location, packaging bag detection means 10 can detect whether packaging bag is in place, and packaging bag is just Position refers to that packaging bag is in opening up state in the first specified location.If packaging bag is in place, packaging bag detection means 10 Receiving terminal can not receive the light beam that the transmitting terminal of packaging bag detection means 10 is sent, so as to send packaging bag detection to controller Signal.

Step 603, controller judges whether to receive the packaging bag detection signal of packaging bag detection means transmission, if not connecing Packaging bag detection signal is received, then performs step 607, otherwise, step 604 is performed.

If specifically, controller does not receive packaging bag detection signal, illustrating that now packaging bag is not yet in place, then secondary control again Produce bagging apparatus and carry out bag taking operation；If controller receives packaging bag detection signal, illustrate that now packaging bag is in place, then controls Open the bag device processed carries out opening bag operation to manned packaging bag.

Step 604, controller control open the bag device is opened and fixed packet pack.

Specifically, when controller receives packaging bag detection signal, 2 open bag suckers 12 of control project forwardly to first and specified Position, fits with the both sides of the first specified location packaging bag in place respectively, and controller controls vavuum pump 16 to open bag sucker 12 vacuumize, and open bag sucker 12 resets.Then, controller control clip 13 fixes the packaging bag, so that the packaging bag opened exists First specified location is fixed.

Step 605, after open bag sucker resets, feedback signal is sent to controller.

Step 606, controller receives the feedback signal that open bag sucker is sent, according to the feedback signal, control bag taking dress Put reset.

If specifically, controller receives the feedback signal of open bag sucker transmission, illustrating that now open the bag device is completed out Bag operation, i.e., bag taking to the packaging bag, open bag operation and completed, then controller controls vavuum pump 16 to stop to bag taking sucker 15 and open bag sucker 12 vacuumize, and control machinery arm 14 is reset to the second specified location from the first specified location, so as to realize Bag taking device resets, to take next packaging bag to prepare.

Step 607, controller control bag taking device carries packaging bag to the first specified location from the second specified location, and Return to step 602.

If specifically, controller do not receive packaging bag detection signal, illustrate the bag taking cycle reach when bag taking operate not into Work((i.e. packaging bag is not in place), then control bag taking device carries out bag taking operation again, and continues to judge whether packaging bag is in place.

In order to be further ensured that being smoothed out for polysilicon pack measure control flow, the flow can also include shutting down protecting Protection mechanism, if that is, continuous default number of times bag taking failure (controller fails to receive packaging bag detection signal), control system System is shut down.

Perform after step 607, can also carry out following steps：

Step 608, counter is made plus 1.

Specifically, the value of counter is n, i.e. n=n+1, can be with the continuous bag taking of bulk registration bag taking device by counter The number of times of failure.

Step 609, controller compares the value of counter with the 3rd threshold value, if the value n of counter is equal to the 3rd threshold value, Then perform step 610；If the value n of counter is not equal to (i.e. less than) the 3rd threshold value, return to step 603.

If it should be noted that n is less than the 3rd threshold value, continuing to determine whether that receiving packaging bag detection means 10 sends Packaging bag detection signal, if controller receive packaging bag detection means 10 transmission packaging bag detection signal, illustrate this Bag taking success, the quantity of the stand-by packaging bag of the second specified location storage is sufficient, and bag taking device is working properly, then by counter Reset.

Step 610, the packed metering control system of controller control polysilicon is shut down.

Specifically, if the value n of counter is equal to the 3rd threshold value, illustrate bag taking device continuous several times (number of times is 3rd threshold value) bag taking failure, it may be possible to the stand-by packaging bag of the second specified location has been used up, it is also possible to which bag taking device is in itself Break down, therefore, controller controls the screening plant, first material conveying device, second material conveying device and bag taking Device is out of service.

Further, after step 509, the polysilicon pack measure control flow can also comprise the following steps：

Step 510, controller judges the feedback signal of open bag sucker transmission whether is received in this metering cycle, if connecing The feedback signal is received, then performs step 511, otherwise, continues waiting for receiving the feedback signal that open bag sucker is sent.

Specifically, when a length of 1 metering for being closed into baffle plate unlatching from the baffle plate at the bottom end opening of weighing hopper 2 is all Phase.If controller is judged to receive the feedback signal of open bag sucker transmission in this metering cycle, illustrate that now packaging bag is It is opened, has carried out the preparation of pack, then performs step 511；If controller is judged not receiving out in this metering cycle The feedback signal that bag sucker is sent, illustrates that now packaging bag is not yet opened, does not then make any operation, continue waiting for reception and open bag The feedback signal that sucker is sent.

Step 511, controller control blanking sleeve drops to the first specified location, to stretch into the packaging bag of opening, and controls The baffle plate is made to open.

Specifically, when controller judges to receive the feedback signal of open bag sucker transmission in this metering cycle, control Blanking sleeve 17 processed drops to the first specified location, stretches into the packaging bag of opening, and controls the gear at the bottom end opening of weighing hopper 2 Plate is opened, the block (block and the block compared with small dimension of larger specification) of the memory storage of weighing hopper 2 is delivered into opening In packaging bag, the metering cycle terminates.

When polysilicon pack metering control system stops, the weight of the block stored in weighing hopper 2 be less than first threshold or During less than Second Threshold, manual blowing, i.e. baffle plate manually at the bottom end opening of control weighing hopper 2 can be carried out and opened, with right Weighing hopper 2 is reset.

By above-mentioned steps as can be seen that controller is by above-mentioned control process, can accurately will in 1 metering cycle The weight of polysilicon product is limited to Second Threshold, so as to realize accurate measurement, improves measuring accuracy, reduces labour cost, carry High polysilicon packs the automaticity of measure control.

For a further understanding of the present invention, many courses of work by packing metering control system are done further below Explanation.

Polysilicon block after breaker is broken falls into screening bed 8, and screening bed 8 conveys polycrystalline by mode of vibration Silico briquette material, after the second sieve plate (3mm) leaks down powder materials falling into belt conveyor is transported to multiple package position.

Block more than 3mm continues conveying by screening bed 8, leaks the block of 3-25mm scopes by the first sieve plate (25mm) Under, block is delivered on the second feed appliance 5 by the second aggregate bin 6 by conveyer 7, smart title is added during work to be packaged Work.

Block more than 25mm after screening by the first aggregate bin 4 by being fallen on the first feed appliance 3, the first feed appliance 3 When the weight that block sends into block in weighing hopper 2, weighing hopper 2 will be reached into first threshold in vibrating transportation mode, the first feeding Device 3 is stopped.Start the second feed appliance 5, the block on the second feed appliance 5 is delivered in weighing hopper 2, so that weighing hopper 2 In the weight of block reach Second Threshold.

Crushing, sieve, measure, weigh during, controller can also control bag taking device to carry out bag taking behaviour simultaneously Make.After system is opened, the second specified location is extended under mechanical arm 14 and pushes down packaging bag, vavuum pump 16 starts to take out bag taking sucker 15 Vacuum, so as to which packaging bag is inhaled on bag taking sucker 15, mechanical arm 14 is recovered to the first specified location, packaging bag is located at metering At the bottom end opening of bucket 2, mechanical arm 14 drives that packaging bag is opening up holds up upwards in 90 ° of bendings.The split bag of vavuum pump 16 is inhaled Disk 12 is vacuumized, so as to which packaging bag is opened, and the packaging bag of 13 pairs of openings of clip of both sides is fixed, and prevents from packing in bagging process Bag comes off.Blanking sleeve 17 at the bottom end opening of weighing hopper 2 is fallen in the packaging bag for stretching into opening, and the bottom of weighing hopper 2 is opened Baffle plate at mouthful is opened, and the polysilicon block after the completion of metering is weighed is entirely fallen in after packaging bag, and clip unclamps, and packaging bag is fallen on Sealing post is delivered on belt conveyor.

It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.

Claims (10)

1. a kind of polysilicon packs metering control system, including：Screening plant and at least two device for transporting objects and metering Bucket, at least two device for transporting objects at least includes：First material conveying device and second material conveying device；Screening dress Put and connect respectively with first material conveying device and second material conveying device, broken polysilicon block can at least be sieved For the block of 2 kinds of specifications, the block of at least two kinds of specifications includes the block and the block compared with small dimension of larger specification, and will The block of larger specification is delivered to first material conveying device, and the block compared with small dimension is delivered into second material conveying dress Put, weighing hopper connects with first material conveying device and second material conveying device respectively, it is characterised in that the system is also wrapped Include：Controller；

Weighing hopper is simultaneously connected with controller, for detecting the larger specification that the first material conveying device of storage in the inner is conveyed The weight of block, and the weight is sent to controller；And the first material conveying device conveying of detection storage in the inner Larger specification block and the conveying of second material conveying device relatively small dimension block gross weight, and by the gross weight It is sent to controller；

Controller is connected with first material conveying device and second material conveying device respectively, for controlling first material conveying dress Put startup, and the weight of the block of the currently stored larger specification detected according to weighing hopper, control first material conveying dress Stopping is put, and control second material conveying device starts, and the currently stored larger specification detected according to weighing hopper The gross weight of block and block compared with small dimension, control second material conveying device stops.

2. the system as claimed in claim 1, it is characterised in that be preset with first threshold and Second Threshold in the controller, First threshold is less than Second Threshold；

The controller is specifically for weight and the first threshold of the block for the currently stored larger specification for detecting weighing hopper Value compares, and when the weight of the block of currently stored larger specification is more than or equal to first threshold, controls first thing Material conveying device stops, and controls the second material conveying device to start；And, by weighing hopper detect it is currently stored The block of larger specification and compared with small dimension block gross weight compared with Second Threshold, when currently stored larger specification When block and gross weight compared with the block of small dimension are equal to Second Threshold, the second material conveying device is controlled to stop.

3. system as claimed in claim 2, it is characterised in that the system also includes the broken dress for being used to crush polysilicon Put, breaker is arranged at one end of the screening plant, send broken polysilicon to screening plant；First thing Material conveying device includes：The block of first feed appliance and larger specification for being conveyed to the screening plant is entered after row buffering again It is delivered to the first aggregate bin of the first feed appliance；

First feed appliance is connected with the controller, for the control according to controller, by via the first aggregate bin convey compared with The block of big specification is delivered to weighing hopper, or, the block of the larger specification conveyed via the first aggregate bin is delivered to by stopping Weighing hopper.

4. system as claimed in claim 3, it is characterised in that the second material conveying device includes：Second feed appliance, use In the second aggregate bin for entering to be delivered to the second feed appliance again after row buffering to the block compared with small dimension and for the screening to be filled The block for putting the relatively small dimension of conveying is delivered to the conveyer of the second aggregate bin；

Second feed appliance is connected with the controller, and for the control according to controller, the block compared with small dimension is conveyed To weighing hopper, or, the block compared with small dimension is delivered to weighing hopper by stopping.

5. the system as described in claim any one of 2-4, it is characterised in that being provided with the bottom end opening of weighing hopper to open The baffle plate for opening or closing；

The controller is additionally operable to, before the weight of the block of currently stored larger specification is compared with first threshold, Whether the weight for judging the block of currently stored larger specification is zero, when the weight of the block of currently stored larger specification is When zero, the baffle plate closure is controlled, when the weight of the block of currently stored larger specification is not zero, by currently stored block The weight of material is compared with first threshold.

6. system as claimed in claim 5, it is characterised in that the system also includes：Packaging bag detection means, open packed Put, bag taking device and the support platform for carrying open the bag device and bag taking device；

Support platform is arranged at the lower section of weighing hopper, and forms accommodation space, and it is flat that open the bag device and bag taking device are arranged at support On platform, and it is placed in the accommodation space；

Support platform position corresponding with the bottom end opening of the weighing hopper is provided with through hole, and open the bag device is arranged under through hole Side, the diameter of through hole is equal or slightly larger than the diameter of the bottom end opening of the weighing hopper；

Packaging bag detection means is arranged at the first specified location below through hole, for detecting packaging bag, and in the first specific bit Put when detecting packaging bag, packaging bag detection signal is sent to the controller；First specified location refers to packaging bag just The position of position；

The controller is connected with packaging bag detection means, open the bag device and bag taking device respectively, for being reached when the bag taking cycle When, control bag taking device carries packaging bag to the first specified location from the second specified location；And, examined when receiving packaging bag When the packaging bag for surveying device transmission detects signal, control open the bag device is opened and fixed packet is packed, and is examined when not receiving packaging bag When surveying the packaging bag detection signal that device is sent, control bag taking device, which carries packaging bag to first from the second specified location, specifies Position.

7. system as claimed in claim 6, it is characterised in that at the beginning of counter, counter are also preset with the controller Initial value is 0, and the 3rd threshold value is preset with counter；

The controller is additionally operable to, and when the packaging bag for not receiving the transmission of packaging bag detection means detects signal, makes counter Plus 1, and the value of counter is compared with the 3rd threshold value, when the value of counter is equal to three threshold values, control the screening dress Put, first material conveying device, second material conveying device and bag taking device it is out of service；When the value of counter is less than the 3rd threshold During value, continue to determine whether to receive the packaging bag detection signal of packaging bag detection means transmission, detected when receiving packaging bag During the packaging bag detection signal that device is sent, by counter O reset.

8. system as claimed in claim 6, it is characterised in that the open the bag device includes：It is placed in the accommodating sky a pair Interior open bag sucker and the clip being placed in for a pair in the accommodation space, open bag sucker and clip are solid with support platform respectively Fixed connection；

The bag taking device includes：The mechanical arm that is placed in the accommodation space for a pair and it is placed in the accommodation space for a pair Interior bag taking sucker, 1 bag taking sucker is arranged on the top of 1 mechanical arm, and mechanical arm is fixedly arranged in support platform, and with it is described Controller is connected；

The system also includes vavuum pump, and vavuum pump is connected with open bag sucker, bag taking sucker and the controller respectively, for root According to the control of the controller, respectively to open bag sucker and bag taking suction disc vacuum pumping；

The controller is specifically for when the packaging bag for receiving the transmission of packaging bag detection means detects signal, bag is opened in control Sucker projects forwardly to the first specified location, with the two sides for the packaging bag of fitting respectively, controls the split bag suction disc vacuum pumping of vavuum pump, So that open bag sucker resets, and sends feedback signal to controller after the reset, and the two ends of clip clamping packaging bag are controlled, with Fixed packet is packed；When receiving the feedback signal of open bag sucker transmission, control vavuum pump stops to bag taking sucker and opens bag suction Disk is vacuumized, and control machinery arm resets；When the packaging bag for not receiving the transmission of packaging bag detection means detects signal, control Mechanical arm drops to the second specified location, and controls vavuum pump to bag taking suction disc vacuum pumping, with horizontal draw package bag, and, Control machinery arm level carries the packaging bag and rises to the first specified location, and is rotated by 90 °, so that packaging bag is opening up.

9. system as claimed in claim 8, it is characterised in that the system also includes blanking sleeve, blanking sleeve is arranged at The position of the through hole of support platform, can be lifted in the accommodation space；

The controller is connected with blanking sleeve, is additionally operable to, and after control second material conveying device stops, judging in this meter Whether received in the amount cycle open bag sucker transmission feedback signal, when received in this metering cycle open bag sucker transmission it is anti- During feedback signal, control blanking sleeve drops to the first specified location, to stretch into the packaging bag of opening, and controls the baffle plate to open Open, the block of weighing hopper memory storage is delivered in the packaging bag of opening；Wherein, the metering cycle refers to, the gear Duration of the plate closing to unlatching.

10. the system as claimed in claim 1, it is characterised in that the screening plant includes：Sieve bed and at least one is set Sieve plate on screening bed, the sieve plate can at least sieve broken polysilicon block as the block of larger specification and smaller The block of specification.