CN104555356A - Accurate-weighing and continuous-conveying method - Google Patents
Accurate-weighing and continuous-conveying method Download PDFInfo
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- CN104555356A CN104555356A CN201410726345.5A CN201410726345A CN104555356A CN 104555356 A CN104555356 A CN 104555356A CN 201410726345 A CN201410726345 A CN 201410726345A CN 104555356 A CN104555356 A CN 104555356A
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Abstract
The invention discloses an accurate-weighing and continuous-conveying method. A material dividing device is included, and a plurality of weighing hoppers are positioned below the material dividing device. The conveying steps are as follows that (1) a feeding conveying device feeds materials to one weighing hopper till the fed materials reach a set value through the material dividing device; (2) the feeding conveying device is switched to another weighing hopper for feeding materials till the fed materials reach the set value through a material dividing plate; when the switching operation is finished by the material dividing plate, the previous weighing hopper opens the valve of a discharging port to start feeding; the accurate feeding operation is realized by means of controlling the opening degree of the valve according to the reduced weight of the previous weighing hopper; (3) when the reduced weight of the previous weighing hopper reaches a set value, the valve of the previous weighing hopper is closed, and the valve of a next weighing hopper is opened for starting feeding; the feeding conveying device is switched to the previous weighing hopper for feeding materials through the material dividing plate in the material dividing device; the accurate feeding operation is realized under the working condition of continuous conveying by means of cycling the above steps. According to the accurate-weighing and continuous-conveying method, the above steps are employed, so that the operations of accurate weighing and continuous feeding are realized.
Description
Technical field
The present invention relates to accurate transportation art, particularly a kind of accurate weighing continus convergence method.
Background technology
In the field needing continous batching, such as raw-food material batching, forage compounding, composite chemical fertilizer are prepared burden, for making the feed proportioning of glass magnesium plate, and for making the feed proportioning of quartz plate, usually accurate weighing is needed, existing continuous weighing apparatus, the monolateral suspension of many employings belt-like scale weighs structure, and Problems existing is that precision is poor, and usual error is about 5% of total weight.Also there is the accurate weighing hopper adopting multi-point support, but because the finite capacity of hopper, be difficult to realize material continus convergence.
Chinese patent 2008800064684 provides a kind of hopper, hopper unit and combined metering device, disclose the combination of feed hopper and weigh-hatching plant, can realize weighing comparatively accurately, but in this device, need for each weigh-hatching plant provides a feed hopper, structure is comparatively complicated, and the employing of this weigh-hatching plant is that cantilever weighs mode, error is relatively large, and the actuating device that weigh-hatching plant bottom gate is opened is arranged in frame, also can affect the accuracy rate of weighing.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of accurate weighing continus convergence method, under continus convergence operating mode, realizes accurate feeding with lower cost.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of accurate weighing continus convergence method, comprise a distributing device, be provided with the cutting plate for switching to different discharging opening feedings in distributing device, cutting plate is connected with driving the actuating device of cutting plate action by transmission device;
Multiple hopper of weighing is positioned at below distributing device, and corresponding with the discharging opening of distributing device;
The discharge gate of multiple hopper of weighing is provided with the proportion adjustment gate of adjustable aperture size, and described proportion adjustment gate installation is being weighed on hopper;
Supplying step is:
One, feed conveying device by distributing device to one of them hopper delivery of weighing to setting value;
Two, switched to another hopper delivery of weighing to setting value by cutting plate; While cutting plate has switched, the gate that discharge gate then opened by hopper of weighing formerly has started feed, according to the aperture of the weight control gate that hopper of weighing formerly deducts, with accurate feeding;
Three, the weight deducted when hopper of weighing formerly reaches setting value, the closing gate of hopper of weighing formerly, after to weigh the gate opening feed of hopper, feed conveying device switches to hopper delivery of weighing formerly by the cutting plate in distributing device;
By the circulation of above step, realize accurate feeding under the operating mode of continus convergence.
The gate of hopper of weighing formerly is progressively closed, simultaneously after the weigh gate of hopper progressively open, remain unchanged to make feed total amount.
In step 2, after posterior hopper delivery to setting value of weighing, feed conveying device stops feed, and cutting plate switches to hopper of weighing formerly.
Described cutting plate is arranged on the connecting portion between each discharging opening by rotating shaft; Rotating shaft end head is installed with drive wheel, and drive wheel is connected with flower wheel by flexible drive parts, and linear drive apparatus is connected with flexible drive parts.
Described linear drive apparatus is hydraulic actuating cylinder or cylinder, and in the cylinder body of hydraulic actuating cylinder or cylinder, piston two ends are rod chamber.
Stock guide is provided with in the below of point hopper inside of distributing device.
Described cutting plate cross-sectional plane is the shape of medial recess, and the cross-sectional plane of stock guide is also the shape of corresponding medial recess.
Described hopper of weighing is bearing in frame respectively by multiple LOAD CELLS.
The cross-sectional plane of described hopper of weighing is for semicircle.
The discharge gate of multiple hopper of weighing is adjacent to each other.
A kind of accurate weighing continus convergence method provided by the invention, by adopting above step, realize accurate weighing, continuous feeding, less by external environment condition disturbance, weighing precision is directly determined by the precision of LOAD CELLS, can reach total weight 0.05%.And structure is simple, cost is lower, is suitable for needing accurate dosing in production line balance and the occasion of continuous feeding.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is continuous feeding schematic flow sheet of the present invention.
Fig. 2 is the A-A sectional structure schematic diagram in Fig. 1.
Fig. 3 is the main TV structure schematic diagram of another embodiment of the present invention.
Fig. 4 is the lateral plan of Fig. 3.
Fig. 5 is the B-B sectional structure schematic diagram in Fig. 4.
Fig. 6 is the partial enlarged drawing adopting flexible drive parts drive configuration in the present invention.
In figure: distributing device 1, point hopper 101, stock guide 102, cutting plate 103, drive wheel 104, flower wheel 105, drives cylinder 106, flexible drive parts 107, first discharging opening 108, second discharging opening 109, rotating shaft 110, first weighs hopper 2, LOAD CELLS 21, gate 22, first discharge gate 23, second discharge gate 23', second weighs hopper 2', batching feedway 3, feed conveying device 4, frame 5.
Detailed description of the invention
Embodiment 1:
As in Fig. 1,3,4, a kind of accurate weighing continuous conveying device, comprising a distributing device 1, being provided with the cutting plate 103 for switching to different discharging opening feedings in distributing device 1, cutting plate 103 is connected with driving the actuating device of cutting plate 103 action by transmission device;
Multiple hopper of weighing is positioned at below distributing device, and corresponding with the discharging opening of distributing device 1.Structure thus, by distributing device 1 to each hopper feed in turn of weighing, then each weigh hopper after accurate weighing by subtractive way continuously to batching feedway 3 continuously accurate feeding.Thus realize the accurate weighing continus convergence of material.
Described cutting plate 103 is arranged on the connecting portion between each discharging opening by rotating shaft 110.As shown in Fig. 1,3,4, cutting plate 103 is fixedly connected with rotating shaft 110, and rotating shaft 110 is bearing on point hopper 101 by bearing.Structure thus, being convenient to cutting plate 103 by rotating, switching the direction of tilt of cutting plate 103, thus alternately to the first discharging opening 108 and the second discharging opening 109 feed.
Preferred structure is as in Fig. 6, and rotating shaft 110 termination is installed with drive wheel 104, and drive wheel 104 is connected with flower wheel 105 by flexible drive parts 107, and linear drive apparatus is connected with flexible drive parts 107.Flexible drive parts 107 in this example is belt, cog belt or chain, and corresponding drive wheel 104 and flower wheel 105 are belt pulley, gear or sprocket wheel.Linear drive apparatus is then linear electric motors, cylinder, hydraulic actuating cylinder.Preferred cylinder in this example.In this example, by chain drive or belt gear, by driving the straight-line motion of cylinder 106 to be converted to rotary motion, especially in switching process, the characteristic that flexible drive parts 107 has buffering is avoided damaging parts.As in Fig. 6, when driving the piston rod of cylinder 106 to stretch out, driving flexible drive parts 107 to left movement, thus driving driving wheel 104 left-hand revolution, rotating shaft 110 left-hand revolution corresponding to cutting plate 103, thus completing the switching of cutting plate 103.Preferred further, drive the two ends in cylinder 106 cylinder to be rod chamber, namely drive the piston rod of cylinder 106 all to run through whole cylinder body in the course of the work, structure thus, guarantee that speed when cutting plate 103 switches to both sides is identical, thus improve weighing precision.
Optional structure is: rotating shaft 110 termination is installed with the connecting rod vertical with rotating shaft 110, linear drive apparatus and rod hinge connection.But in the structure shown here, cutting plate 103 rotate to be variable-speed motion, the impact of the symmetrical heavy burder bucket of stream can be affected, thus affect weighing precision.And adopting driving cylinder 106 to drive the reciprocating mode of flexible drive parts 107, then cutting plate 103 is uniform movement.Cutting plate 103 can be avoided because of variable-speed motion to make the symmetrical heavy burder bucket shape of stream become temporary impact, thus the accuracy rate that impact weighs.
In preferred scheme, as in Fig. 1,4, be provided with stock guide 102 in the below of point hopper 101 inside of distributing device 1.Stock guide 102 in this example is arranged on the both sides at point hopper 101 and the first discharging opening 108 and the second discharging opening 109 connecting portion.Structure thus, avoids the gap between cutting plate 103 and point hopper 101 to cause material from leakage, thus makes weighing inaccurate.In the present invention, the advantage of distributing device 1 is that switching controls is convenient, without leaking material, thus being beneficial to measurement accurately, requiring low to parts size precision.
Further in preferred scheme, described cutting plate 103 cross-sectional plane is the shape of medial recess, such as circular arc, " V " shape, " U " shape or rectangle, and the cross-sectional plane of stock guide 102 is also the shape of corresponding medial recess.Structure thus, in Flow of Goods and Materials, material concentrates on the axis of cutting plate 103, thus reduces the seal request between cutting plate 103 and the housing of distributing device 1.
As in Fig. 1 ~ 4, described hopper of weighing is bearing in frame 5 respectively by multiple LOAD CELLS.Be provided with stay bearing plate at the outer wall of hopper of weighing, be also provided with reinforced rib between the outer wall of stay bearing plate and hopper of weighing, frame 5 is provided with backing plate, LOAD CELLS 21 is arranged between stay bearing plate and backing plate.Preferably, the periphery between stay bearing plate and backing plate is also provided with flexible protective cover, with the pollution protecting LOAD CELLS 21 to avoid being subject to dust.
Structure thus, adopt the cumulative mode of integration to obtain total weight during metering, avoid force transmission mechanism, such as cantilever mechanism or leverage weighing precision impact.
Preferred scheme is as in Fig. 2, and the cross-sectional plane of described hopper of weighing is for semicircle.Structure thus, the discharge gate being convenient to make to weigh hopper is adjacent to each other.
The discharge gate of multiple hopper of weighing is adjacent to each other.Structure thus, makes two materials of weighing in hopper drop on identical position on batching feedway 3 as far as possible, to realize continuous print accurate dosing with the raw material carried on batching feedway 3.
Preferred scheme is as in Fig. 1,3, and discharge gate is provided with the proportion adjustment gate of adjustable aperture size, and described proportion adjustment gate installation is being weighed on hopper.Such as pass through the ram position of cylinder or hydraulic actuating cylinder control door, thus control aperture size.Structure thus, realizes the accurate discharge automatically controlled.
Embodiment 2:
On the basis of embodiment 1, more specifically structure is a kind of accurate weighing continuous conveying device as shown in Fig. 1,2,6, be provided with feed conveying device 4 above distributing device 1, described feed conveying device 4 comprises belt feeder, screw feeder, elevator bucket or burying scraper.Preferably by the belt feeder of the adjustable speed of variable-frequency motor or Serve Motor Control, screw feeder, elevator bucket or burying scraper, so that realize automatically controlling.
In distributing device 1, top is a point hopper 101, and bottom is respectively equipped with the first discharging opening 108 and the second discharging opening 109, and cutting plate 103 is arranged on the connecting portion between each discharging opening by rotating shaft 110, as shown in Figure 1.Rotating shaft 110 termination is installed with drive wheel 104, and drive wheel 104 is connected with flower wheel 105 by flexible drive parts 107, drives cylinder 106 to be connected with flexible drive parts 107.
Stock guide 102 is provided with in the below of point hopper 101 inside of distributing device 1.Stock guide 102 is arranged on the both sides at point hopper 101 and the first discharging opening 108 and the second discharging opening 109 connecting portion.Described cutting plate 103 cross-sectional plane is the shape of medial recess.The cross-sectional plane of stock guide 102 is also the shape of corresponding medial recess.
Below the first discharging opening 108 and the second discharging opening 109, be respectively equipped with the first hopper 2 and second of weighing to weigh hopper 2', first the hopper 2 and second hopper 2' that weighs that weighs is bearing in frame 5 respectively by multiple LOAD CELLS 21, in this example, the first hopper 2 and second hopper 2' level cross-sectionn of weighing of weighing becomes semicircle, as shown in Figure 2, two first hoppers 2 and second of weighing hopper 2' that weighs is combined into a circle.The weigh second discharge gate 23' of hopper 2' of first first discharge gate 23 and second of weighing hopper 2 is adjacent to each other, more close with the position making material drop on batching feedway 3.Thus make the batching in continuous conveying process more accurate.
In this example, first the hopper 2 and second hopper 2' that weighs that weighs is arranged in the both sides of batching feedway 3, and correspondingly the first discharging opening 108 of distributing device 1 and the second discharging opening 109 are also the both sides being positioned at batching feedway 3, as shown in fig. 1, this structure is comparatively simple, is easy to realize.
A kind of accurate weighing continus convergence method, as in Fig. 1, feed conveying device 4 is fed in point hopper 101, now cutting plate 103 tilts to the right, stock guide 102 and the cutting plate 103 in a material process point hopper 101, left side export from the second discharging opening 109, entering into second weighs in hopper 2', the gravimetric value signal being sent to control setup when LOAD CELLS 21 reaches preset value, the such as second maximum size 100kg weighing hopper 2', this value does not comprise the second weight of weighing hopper 2' and annex thereof.
The piston rod of cylinder 106 is driven to retract, drive flexible drive parts 107 left-hand revolution left, the corresponding left-hand revolution of drive wheel 104, cutting plate 103 is driven to be tilted to the left, material now exports from point stock guide 102 of hopper 101 through right side, cutting plate 103, first discharging opening 108, entering into first weighs in hopper 2, first LOAD CELLS 21 of weighing below hopper 2 starts to obtain weight signal and is sent to control setup, until after weight signal reaches setting value, the such as first maximum size 100kg weighing hopper 2.Feed conveying device 4 stops feed, cutting plate 103 is switched to the second discharging opening 109.Simultaneously the second gate 22 of weighing below hopper 2' starts to batching feedway 3 feed, usually on batching feedway 3, there is unclassified stores, weigh after the accurate proportioning of material that hopper 2' comes and send into continuous mixing device with second and mix, to guarantee that material proportion is accurate all the time.Now weight signal continues to send to control setup by the second LOAD CELLS 21 of weighing hopper 2', by the aperture of automatic control device control door 22, realize to batching feedway 3 accurate feeding, namely the closed loop control of gate 22 is realized by LOAD CELLS 21, set a feeding rate interval value, when the weight reduced value in hopper of weighing and the ratio of time, namely feeding rate is higher than the interval value upper limit, then the aperture of gate 22 is reduced, and when feeding rate is lower than interval value lower limit, then the aperture of gate 22 is increased, and when feeding rate is positioned within interval value, then do not change the aperture of gate 22, to avoid frequent adjustment.
The weight signal sent when the second LOAD CELLS 21 of weighing hopper 2' reaches default lower limit, such as 5kg, now the second material of weighing in hopper 2' is close to emptying, progressively to weigh second the closing gate of hopper 2', progressively open the first gate of weighing hopper 2 simultaneously, make now to remain unchanged to the feed total amount of batching feedway 3, when the second hopper 2' gate of weighing is closed completely, continue to weigh hopper 2' charging to second, so move in circles, realize the accurate weighing continous batching conveying on conveyor line.
Second weighs remaining material, such as 1kg in hopper 2', when continuing material feeding, does not affect the second weight setpoint value of maximum size of weighing hopper 2', when namely still material feeding is weighed into 100kg, starts to switch or feed conveying device 4 stops feed.But when in the controls feed weight being added up, all weight of material remaining in hopper of weighing is deducted at every turn, namely when leftover materials are 1kg, this time cumulative actual supplied materials weight is 100+X-1, and wherein X starts to switch the material later still continued from distributing device 1.Method thus, while guaranteeing accurate feeding, guarantees the accurate of cumulative feed gravimetric value.
Embodiment 3:
On the basis of embodiment 1, a kind of accurate weighing continuous conveying device as shown in Fig. 1,2,6, is provided with feed conveying device 4 above distributing device 1, described feed conveying device 4 comprises belt feeder, screw feeder, elevator bucket or burying scraper.
In distributing device 1, top is a point hopper 101, and bottom is respectively equipped with the first discharging opening 108 and the second discharging opening 109, and cutting plate 103 is arranged on the connecting portion between each discharging opening by rotating shaft 110, as shown in Figure 1.Rotating shaft 110 termination is installed with drive wheel 104, and drive wheel 104 is connected with flower wheel 105 by flexible drive parts 107, drives cylinder 106 to be connected with flexible drive parts 107.
Stock guide 102 is provided with in the below of point hopper 101 inside of distributing device 1.Stock guide 102 is arranged on the both sides at point hopper 101 and the first discharging opening 108 and the second discharging opening 109 connecting portion.Described cutting plate 103 cross-sectional plane is the shape of medial recess.The cross-sectional plane of stock guide 102 is also the shape of corresponding medial recess.
Below the first discharging opening 108 and the second discharging opening 109, be respectively equipped with the first hopper 2 and second of weighing to weigh hopper 2', first the hopper 2 and second hopper 2' that weighs that weighs is bearing in frame 5 respectively by multiple LOAD CELLS 21, in this example, the first hopper 2 and second hopper 2' level cross-sectionn of weighing of weighing becomes semicircle, as shown in Figure 2, first the hopper 2 and second hopper 2' that weighs that weighs is combined into a circle.The weigh second discharge gate 23' of hopper 2' of first first discharge gate 23 and second of weighing hopper 2 is adjacent to each other, more close with the position making material drop on batching feedway 3.Thus make the batching in continuous conveying process more accurate.
In the scheme of further optimization, in this example, the first discharging opening 108 of distributing device 1 and the second discharging opening 109 are provided with the dash plate 111 along batching feedway 3 direction, the dash plate 111 of the first discharging opening 108 and the second discharging opening 109 is respectively towards front and the rear of batching feedway 3, by dash plate 111, stream is turned at this place, to reduce the impact of the symmetrical heavy burder bucket of material.
In this example, first weigh hopper 2 and second weigh hopper 2' be arranged in along batching feedway 3 fore-and-aft direction, as shown in Fig. 3 ~ 5.Structure thus, adapts to the occasion of particular/special requirement, such as, require that material must drop on the occasion in the middle of batching feedway 3.
The method of operation step of this example is identical with enforcement 2.
The above embodiments are only the preferred technical solution of the present invention; and should not be considered as restriction of the present invention; the technical scheme that protection scope of the present invention should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (10)
1. an accurate weighing continus convergence method, it is characterized in that: comprise a distributing device (1), be provided with the cutting plate (103) for switching to different discharging opening feedings in distributing device (1), cutting plate (103) is connected with driving the actuating device of cutting plate (103) action by transmission device; Multiple hopper of weighing is positioned at below distributing device, and corresponding with the discharging opening of distributing device (1); The discharge gate of multiple hopper of weighing is provided with the proportion adjustment gate of adjustable aperture size, and described proportion adjustment gate installation is being weighed on hopper;
Supplying step is:
One, feed conveying device (4) by distributing device (1) to one of them hopper delivery of weighing to setting value;
Two, switched to another hopper delivery of weighing to setting value by cutting plate (103); While cutting plate (103) has switched, the gate that discharge gate then opened by hopper of weighing formerly has started feed, according to the aperture of the weight control gate that hopper of weighing formerly deducts, with accurate feeding;
Three, the weight deducted when hopper of weighing formerly reaches setting value, the closing gate of hopper of weighing formerly, after to weigh the gate opening feed of hopper, feed conveying device (4) switches to hopper delivery of weighing formerly by the cutting plate (103) in distributing device (1);
By the circulation of above step, realize accurate feeding under the operating mode of continus convergence.
2. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: the gate of hopper of weighing formerly is progressively closed, simultaneously after the weigh gate of hopper progressively open, remain unchanged to make feed total amount.
3. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: in step 2, and after posterior hopper delivery to setting value of weighing, feed conveying device (4) stops feed, and cutting plate (103) switches to hopper of weighing formerly.
4. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: described cutting plate (103) is arranged on the connecting portion between each discharging opening by rotating shaft (110); Rotating shaft (110) termination is installed with drive wheel (104), and drive wheel (104) is connected with flower wheel (105) by flexible drive parts (107), and linear drive apparatus is connected with flexible drive parts (107).
5. a kind of accurate weighing continus convergence method according to claim 1, it is characterized in that: described linear drive apparatus is hydraulic actuating cylinder or cylinder, in the cylinder body of hydraulic actuating cylinder or cylinder, piston two ends are rod chamber.
6. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: the below inner at point hopper (101) of distributing device (1) is provided with stock guide (102).
7. a kind of accurate weighing continus convergence method according to claim 6, it is characterized in that: described cutting plate (103) cross-sectional plane is the shape of medial recess, the cross-sectional plane of stock guide (102) is also the shape of corresponding medial recess.
8. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: described hopper of weighing is bearing in frame (5) respectively by multiple LOAD CELLS.
9. a kind of accurate weighing continus convergence method according to claim 1, is characterized in that: the cross-sectional plane of described hopper of weighing is for semicircle.
10. a kind of accurate weighing continus convergence method according to claim 1 or 8, is characterized in that: the discharge gate of multiple hopper of weighing is adjacent to each other.
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| CN105173132A (en) * | 2015-07-29 | 2015-12-23 | 重庆怡之驰机械有限公司 | Equivalent feeding device |
| CN106840340A (en) * | 2017-03-29 | 2017-06-13 | 象山互易科技咨询有限公司 | A kind of efficient Weighing System for Counter Stocks |
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| CN105173132B (en) * | 2015-07-29 | 2017-06-13 | 重庆怡之驰机械有限公司 | Equivalent feed device |
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| CN107458862A (en) * | 2017-08-16 | 2017-12-12 | 漳州旗滨玻璃有限公司 | A kind of image glass substrate cold end cullet induction system and carrying method |
| CN107458862B (en) * | 2017-08-16 | 2023-08-11 | 漳州旗滨玻璃有限公司 | Imaging glass substrate cold end broken glass conveying system and conveying method |
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