CN204623859U - There is the rotary grid feeder of quantifying feed and crawl feed supplement function - Google Patents
There is the rotary grid feeder of quantifying feed and crawl feed supplement function Download PDFInfo
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- CN204623859U CN204623859U CN201420833708.0U CN201420833708U CN204623859U CN 204623859 U CN204623859 U CN 204623859U CN 201420833708 U CN201420833708 U CN 201420833708U CN 204623859 U CN204623859 U CN 204623859U
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Abstract
The utility model provides a kind of rotary grid feeder with quantifying feed and crawl feed supplement function.Comprise the actuating device of cylindrical barrel, barrel base plate, rotation grid dish, rotation grid dish overhead gage, rotating shaft, drive rotating shaft rotation; Feed bin is formed by cylindrical barrel and barrel base plate; Barrel base plate is provided with discharging opening; The top of discharging opening is provided with the rotation grid dish overhead gage be fixed on cylindrical barrel; Actuating device is arranged on the back side of barrel base plate, and rotating shaft is connected with the central shaft hole rotating grid dish through barrel base plate; Rotate grid dish be positioned at barrel base plate and rotate grid.Rotary grid feeder has quantifying feed and crawl feed supplement function, and the high precision being applicable to all kinds of powder is fed in raw material.
Description
Technical field
The utility model belongs to industrial automation, relates to a kind of feeding device powder material being carried out to accurately feed in raw material.
Background technology
At present, fine-powder shape material is carried out reinforced weigh and pack time, extensively adopt in the industry screw feeder and weighing controller to match to merge and adopt dynamic weighing mode to control charging precision.For taking into account charging rate and charging precision, general small one and large one two screw feeders that adopt feed in raw material to same reinforced weighing container.When weighing based on the weight of packaging nominal value setting is reinforced, first feeding in raw material with king bolt feeder rapid loading carry out precision controlling to close to switching to minor spiral feeder after setting weight.The final charging precision of system is determined by the reinforced characteristic of minor spiral feeder.
In dynamic reinforced Weighing control process, after being in feeder outlet and between the powder surface having entered in the powder container that is weighed, fall and be not yet called as " flying to expect " by powder count weight.Because " flying material " can not be counted heavily in real time, dynamic weighing control system by deciding to close in advance the time of feeder to the prediction of " flying to expect " weight being about to arrive, must control final charging precision with this.
Usually, be in the Real-Time Monitoring of dynamic weighing data and continuous charging process, predicted to the real-time measurement of charging rate by weighing controller the moment of shutting down in advance based on the reinforced weighing system of screw feeder, ensure in this way reinforced after powder weight as far as possible close to nominal titre.Under normal circumstances, the control accuracy of this reinforced Weighing control mode depends primarily on the stability being exported the powder speed flowed out by screw feeder; In addition dropping at random that, screw feeder outlet and powder passage bonding cause can cause larger uncertain random error.At present, when the powder to nominal titre being 50 kilograms carries out reinforced Weighing control, the average reinforced Weighing control precision that can realize in the industry is generally at about 100 grams, and the random error up to hundreds of grams appears in occasional.
Because the discharging opening bore of screw feeder is larger; continue, by the powder weight of the downward landing of discharging opening, there is great uncertainty in stopping process and even after shutting down; therefore, only reinforced Weighing control precision can not be ensured with screw feeder; need to coordinate with screw feeder with auxiliary valve, when utilizing the valve of quick closedown to block shutdown and the powder continuing whereabouts after shutting down to improve the control accuracy feeding in raw material and weigh.This not only adds structural complexity and the cost of system, and make the measure of being corrected error by crawl feed supplement become impossible.
For above-mentioned reasons, existing basis is improved further be restricted based on the reinforced weighing precision of the reinforced weighing system of screw feeder and Proper Packing rate.At present, there is no in the industry and a kind ofly can solve trickle powder high precision and to feed in raw material the efficient apparatus of the problem of weighing.
Utility model content
For the problems referred to above, the utility model provides one not by " fly material " impact, can realize quantifying feed and have the high-precision rotary formula grid feeder of crawl feed supplement function.
The rotary grid feeder of what the utility model provided have quantifying feed and crawl feed supplement function, comprise cylindrical barrel 1, barrel base plate 4, rotate grid dish 3, rotate grid dish overhead gage 2, rotating shaft 6, the actuating device 7 that drives rotating shaft to rotate; Feed bin is formed by cylindrical barrel and barrel base plate.Barrel base plate is provided with discharging opening 5; The top of discharging opening 5 is provided with the rotation grid dish overhead gage 2 be fixed on cylindrical barrel.Actuating device 7 is arranged on the back side of barrel base plate, and rotating shaft 6 is connected with rotation grid dish 3 through barrel base plate 4.Rotate grid dish between barrel base plate and rotation grid dish overhead gage, and can rotate freely between barrel base plate and rotatory dish lattice overhead gage under the drive at actuating device.
Described rotation grid dish is specifically: evenly arrange the identical rib of structure at the periphery of round turntable, forms a grid, be made up of rotate grid dish the rotating disk with grid by two adjacent ribs.
Rotary grid feeder as above, is specially, and described actuating device is the integrated speed-reducing motor with retarder, and rotating shaft 6 is the output shaft of retarder.
Rotary grid feeder as above, is specially, and described actuating device is retarder, and rotating shaft 6 is the output shaft of retarder, and the actuating device that the input end of retarder is active with another is connected.
Rotary grid feeder as above, is specially, and described actuating device is the gear or belt pulley that are connected with rotating shaft 6, and is connected through gear or the belt pulley actuating device active with another.
the beneficial effects of the utility model:
1. rotary grid feeder of the present utility model can based on result of calculation by the control realization quantifying feed of grid quantity turning over discharging opening.
2. the utility model shut down from ceiling structure after the continuation of powder fall; make it little of ignoring on the impact of charging precision; therefore without the need to blocking the powder of shutting down rear random whereabouts as screw feeder with auxiliary valve; this not only enormously simplify system architecture, and is that static state accurately counts the secondary charging after weighing and crawl feed supplement provides possibility.
3., based on 1 and 2, rotary grid feeder can feed in raw material in the following manner:
A) feeding quantity based on setting calculates the grid quantity that turn over discharging opening, reinforced by completing first time fast to the control of the grid quantity turning over discharging opening.
B) use static meter double recipe formula to obtain the actual weight after feeding in raw material for the first time, obtain the difference between it and setting weight with this.
C) the grid quantity that turn over discharging opening is again calculated based on difference, reinforced by completing second time fast to the control of the grid quantity turning over discharging opening.
Typically by the charging precision that can obtain after casings in twice far above screw feeder, crawl feed profile can be continued through if desired and improve charging precision further.
4. based on 3, rotary grid feeder completely eliminates the vice proper of conventional dynamic Weighing control mode, is therefore applicable to weigh to the high precision of all powder shape material comprising trickle gas enclosure powder is reinforced.
Accompanying drawing explanation
Fig. 1. rotary grid feeder birds-eye view;
Fig. 2. rotary grid feeder front view;
Fig. 3. rotary grid feeder upward view;
Fig. 4. show the explosive view of rotary grid feeder relevant portion syntagmatic;
Fig. 5. rotate grid dish front view;
Fig. 6. rotate grid dish birds-eye view;
Fig. 7. rotary grid feeder barrel and rotation grid dish overhead gage assembly drawing;
Fig. 8. barrel base plate, rotation grid dish and combination of drive means figure.
Detailed description of the invention
embodiment one
The detailed description of the invention that embodiment one provides as shown in Figures 1 to 8.
Evenly process the identical rib of structure at the periphery of round turntable, form a grid by two adjacent ribs, the rotating disk with grid is and rotates grid dish; Rib can be linear structure also can be curvilinear structures, and the present embodiment adopts linear structure.Rotate grid dish and can arrange outer shroud, make grid become enclosed construction, also can not arrange outer shroud, make grid become Open architecture, the present embodiment adopts the closed grid being provided with outer shroud to form rotation grid dish.Feed bin is formed by cylindrical barrel and the barrel base plate being provided with discharging opening; Be positioned in feed bin above barrel base plate discharging opening and be provided with a rotation grid dish overhead gage, this baffle plate is fixed on the inner side of barrel; Rotate grid dish between barrel base plate and rotation grid dish overhead gage, it can rotate freely under the drive of actuating device.
For have suitable, with the supporting with it middle-size and small-size rotary grid feeder of the integrated speed-reducing motor of retarder, preferred integrated speed-reducing motor is as the actuating device rotating grid dish, as shown in Figure 4, integrated speed-reducing motor is directly installed on the back side of barrel base plate, and the output shaft of integrated speed-reducing motor passes perpendicularly through barrel base plate and is connected with rotation grid dish; For larger rotary grid feeder, when not having suitable integrated speed-reducing motor supporting with it, with rotate rotating shaft that grid dish is connected by belt and belt pulley, or be connected with an active actuating device by gear, concrete connection mode is in the field of business is known technology.
Reinforced principle and the charging control method of rotary grid feeder are described below.
Load powder in the feed bin of rotary grid feeder after, when rotating grid dish and remaining static, owing to rotating the stop of grid dish overhead gage and grid rib, powder can not flow out from the discharging opening of feed bin base plate, now, powder is filled in the grid do not blocked by baffle plate, when grid dish rotates, the powder in grid arrives after discharging opening with the grid rotated and is fallen by discharging opening, the basic reinforced principle of Here it is rotary grid feeder.
Below by by further describing the advantage that it is described and the effect that can reach thereof to the structural feature of rotary grid feeder and feed way.
As schemed shown in attached 5 and accompanying drawing 6, if the inner arc arc length of grid is l, the with it radius of correspondence is r; The outer arc radius of grid is R; The thickness of grid is H; R-r is defined as the height of grid.
For guaranteeing not because " the bridging phenomenon " of trickle gas enclosure powder causes powder to fall to being obstructed maybe can not fall at discharging opening, the ratio of the height R-r of grid and the ratio of its thickness H and the inner arc arc length l of grid and its thickness H all should much larger than the concrete visual reinforced object of 1(by testing decision).But, under the prerequisite meeting this limiting condition, the value of minimum arc length l should not be too large, get the distribution density (namely, the total quantity of grid) that less l value can increase grid, this can improve the mechanical characteristic of powder in grid in rotary course and then improve the homogeneity of the ratio distribution again of powder in grid, to the design accuracy of grid quantity turning over discharging opening when improving quantifying feed, and then improve quantifying feed precision.
After powder arrives discharging opening, the powder of grid upper surface drops to its lower surface needs a period of time, after the scantling of structure of grid is determined, grid must be greater than from elapsed time above discharging opening the time that powder drops to its lower surface, otherwise the powder in grid can not fall from discharging opening completely through discharging opening.Therefore, when not taking ancillary method, determine that the grid rotating speed of the maximum charging rate of feeder will be limited by this.When needs improve maximum charging rate, a notch can be diametrically opened at grid overhead gage, and provide high pressure draft to force powder to hurtle down at discharging opening vertically downward through this notch, there is provided the height R-r that the length of the vent window of high pressure draft approximates greatly grid, the size of the visual grid of its thickness is selected between 5-0.5mm.For sake of convenience, the high pressure draft forcing powder to hurtle down is called " air knife ".After employing " air knife " measure, the minimum arc length l of grid will no longer by the constraint of powder free-fall time, and therefore, the density of grid can increase greatly, and therefore and greatly charging rate and charging precision also will improve.
Structure due to grid is identical and be uniformly distributed along the circumference, so, complete once reinforced process after, flow out the product that the feeding quantity of discharging opening equals to turn over powder weight in (comprising decimal) grid quantity of discharging opening and a grid, based on this feature, rotary grid feeder can realize quantifying feed.
From the structure of rotary grid feeder, the uncertainty because of powder angle of repose causes the uncertainty of weight of shutting down rear powder continuation landing relevant with the ratio of grid thickness H to the inner arc arc length l of grid.When the inner arc arc length l of grid is far longer than its thickness H; the uncertainty continuing landing after shutting down, because of the powder that really property does not cause of powder angle of repose will be far smaller than the powder weight in a grid; this is the outstanding advantages that it is compared with screw feeder; based on this advantage; after the rotary grid feeder of employing completes a quantifying feed fast, next also the heavy secondary charging of available static state meter and crawl feed profile increase substantially charging precision.
Based on the feature of quantifying feed and crawl feed supplement, rotary grid feeder can realize quick high accuracy and feed in raw material, and this is that other feeder any is all incomparable at present.Below, by the charging control method of rotary grid feeder, this is illustrated.
Get: total charge weight of setting is W
sd; Time repeatedly reinforced, the expection of feeding in raw material for the m time answers feeding quantity to be W
yq(m); The grid quantity turning over discharging opening when feeding in raw material for the m time is N(m) (decimal part of N is determined by the stop position of grid forward position relative to discharging opening forward position); The proportion of powder is η; The volume of each grid is V
sg; In each grid, the weight of powder is W
sg.
Be not difficult accordingly to derive:
N（m）=W
yq（m）/ W
sg………… （1）
W
sg=η×V
sg………… （2）
V in formula
sgknown, the scope of η known and can by aftermentioned method in reinforced process dynamic measurement correct.So, rotary grid feeder by the grid quantity N that controls to turn over discharging opening to realize quantifying feed.Obviously, the quantifying feed precision of rotary grid feeder depends on survey precision in the value precision of powder proportion η and reinforced process and the control accuracy to grid stop position.
Due to the relative instability of powder proportion, rotary grid feeder is only adopted to be the charging control precision that can not ensure to expect.Identical with background technology, rotary grid feeder need with gravity measure device with the use of, unlike, rotary grid feeder adopts static meter double recipe formula and has secondary charging and crawl feed supplement function, therefore, charging control precision can be improved under the prerequisite increasing substantially charging rate, below this is briefly described.
For sake of convenience, be defined as " feeding in raw material first " reinforced for the first time after per tour start; The total charge weight W completing a setting
sdbe repeatedly reinforcedly called " first time is reinforced ", " second time is reinforced "
After shutting down for a long time, in feed bin, the deposition of powder can cause the larger change of powder proportion, therefore, when per tour reinforced first, and not exactly knows the actual specific gravity η of the powder by being performed reinforced weighing operation.For this reason, when per tour " is fed in raw material " first, based on total charge weight W of setting
sdthe powder weight W in each grid is calculated with the maximum specific weight through type (2) of powder
sg, the grid quantity of discharging opening and the grid stop position relative to discharging opening should be turned over when then through type (1) calculates N to determine to feed in raw material first, accordingly, control the feeding operation that can complete fast once based on result of calculation without the need to dynamic weighing.The maximum specific weight of powder due to what adopt in calculating, so, complete feeding operation first after actual feeding quantity can not be greater than total feeding quantity W of setting
sd, after this just can with surveying the W obtained in reinforced process
sgcalculate N.
Need the grid quantity turning over discharging opening more owing to completing (comprising first) when first time is reinforced, the weight W of powder in each grid obtained thus
sgprecision also relatively high, so, always use the W obtained in (comprising first) first time reinforced process
sgbe used as the basis turning over the grid quantity N of discharging opening when second time, (if necessary) third time and the next one feed in raw material for the first time.Even if the W of dynamic measurement in reinforced process
sgmay the precision expected of out of reach far away, only otherwise occur super adding, just W can be eliminated by again or repeatedly feeding in raw material
sgdynamic measurement error on the impact of final charging precision.Below this is illustrated:
Assuming that by the W surveyed
sgthe actual feeding quantity that causes of error answer charge weight W relative to expection
yqthe maximum relative error of (m) for ± a%(a is positive number), for preventing super adding, in formula (1), introducing one anti-ly superly add coefficient a% and obtain:
N（m）=W
yq（m）×（1-a%）/ W
sg………… （3）
If do not consider the positioning precision of grid, be not difficult to derive, after reinforced through m time, actual feeding quantity is relative to total feeding quantity W of setting
sdmaximum relative error be (a%)
m.
Such as: if a=5(namely once reinforced after the maximum relative error that produces be 5%), the actual feeding quantity after casings in twice relative to the maximum relative error between the total feeding quantity set as (5%)
2=2.5 ‰; If a=10, three times reinforced after actual feeding quantity relative to the maximum relative error between the total feeding quantity set as (5%)
3=1 ‰.
As the feeder controlling final charging precision, with the screw feeder phase analogy performing said function, the total feeding quantity W set here
sdin fact be exactly the feeding quantity of minor spiral feeder after size screw feeder switches.The nominal charge weight of corresponding 50 kilograms, this amount is general at 0.5-2 kilogram, gets W
sd=2 kilograms, as the W relevant to η
sgmeasured error when being 5%, after casings in twice, the maximum definitely reinforced error of rotary grid feeder is only 5 grams; As the W relevant to η
sgmeasured error up to 10% time, three times reinforced after maximum definitely reinforced error be only 2 grams.In fact, the limit charging precision of the rotary grid feeder of above-mentioned charging control method is adopted to depend on the positioning precision rotating grid dish.Experiment shows, only adopts general control technology, and the final reinforced error limit of rotary grid feeder also can be controlled in 0-20 gram.
Above-described embodiment is that the utility model examination example illustrates, does not represent the utility model protection domain.
Claims (4)
1. there is the rotary grid feeder of quantifying feed and crawl feed supplement function, comprise the actuating device (7) of cylindrical barrel (1), barrel base plate (4), rotation grid dish (3), rotation grid dish overhead gage (2), rotating shaft (6), drive rotating shaft rotation; Feed bin is formed by cylindrical barrel and barrel base plate; Barrel base plate is provided with discharging opening (5); The top of discharging opening (5) is provided with rotation grid dish overhead gage (2) be fixed on cylindrical barrel; Actuating device (7) is arranged on the back side of barrel base plate, and rotating shaft (6) is connected with rotation grid dish (3) through barrel base plate (4); Rotate grid dish between barrel base plate and rotation grid dish overhead gage, and can rotate freely between barrel base plate and rotatory dish lattice overhead gage under the drive of actuating device;
Described rotation grid dish is specifically: evenly arrange the identical rib of structure at the periphery of round turntable, forms a grid, be made up of rotate grid dish the rotating disk with grid by two adjacent ribs.
2. have the rotary grid feeder of quantifying feed and crawl feed supplement function as claimed in claim 1, it is characterized in that, described actuating device is the integrated speed-reducing motor with retarder, the output shaft that rotating shaft (6) is retarder.
3. there is the rotary grid feeder of quantifying feed and crawl feed supplement function as claimed in claim 1, it is characterized in that, described actuating device is retarder, the output shaft that rotating shaft (6) is retarder, and the actuating device that the input end of retarder is active with another is connected.
4. there is the rotary grid feeder of quantifying feed and crawl feed supplement function as claimed in claim 1, it is characterized in that, described actuating device is the gear or belt pulley that are connected with rotating shaft (6), and is connected through gear or the belt pulley actuating device active with another.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833708.0U CN204623859U (en) | 2014-12-25 | 2014-12-25 | There is the rotary grid feeder of quantifying feed and crawl feed supplement function |
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| CN201420833708.0U CN204623859U (en) | 2014-12-25 | 2014-12-25 | There is the rotary grid feeder of quantifying feed and crawl feed supplement function |
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| CN204623859U true CN204623859U (en) | 2015-09-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105819007A (en) * | 2016-01-29 | 2016-08-03 | 德施普科技发展温州有限公司 | Plane rotary valve type weighing packaging device |
| CN106515083A (en) * | 2016-12-22 | 2017-03-22 | 山东健康源生物工程有限公司 | Rotating tablet machine guide sheet feeding device |
| CN108216704A (en) * | 2016-12-28 | 2018-06-29 | 成都宇亨工业制造有限公司 | The accurate prescribe medicine control system of prescribe medicine machine |
| CN109436399A (en) * | 2018-10-27 | 2019-03-08 | 合肥雄鹰自动化工程科技有限公司 | A kind of powder packaging uses the powder weighing machines people with micro addition function |
| CN109533416A (en) * | 2019-01-23 | 2019-03-29 | 新疆农业科学院农业机械化研究所 | A kind of organic fertilizer packing machine |
| CN111284764A (en) * | 2020-03-05 | 2020-06-16 | 许德祥 | Feed divider that pharmaceutical packaging used |
| CN111675173A (en) * | 2020-07-27 | 2020-09-18 | 杭州酿蜜科技有限公司 | Automatic filling equipment and filling method for emulsion-like skin care product |
| CN112847809A (en) * | 2020-12-29 | 2021-05-28 | 安徽维东建材股份有限公司 | Dosing equipment for concrete mixing |
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2014
- 2014-12-25 CN CN201420833708.0U patent/CN204623859U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819007A (en) * | 2016-01-29 | 2016-08-03 | 德施普科技发展温州有限公司 | Plane rotary valve type weighing packaging device |
| CN105819007B (en) * | 2016-01-29 | 2018-07-31 | 林淑录 | A kind of Plane Rotation valve type Automatic Weighing and Packing Equipment |
| CN106515083A (en) * | 2016-12-22 | 2017-03-22 | 山东健康源生物工程有限公司 | Rotating tablet machine guide sheet feeding device |
| CN106515083B (en) * | 2016-12-22 | 2019-08-30 | 山东健康源生物工程有限公司 | A kind of rotary pelleting machine guide card feeding device |
| CN108216704A (en) * | 2016-12-28 | 2018-06-29 | 成都宇亨工业制造有限公司 | The accurate prescribe medicine control system of prescribe medicine machine |
| CN108216704B (en) * | 2016-12-28 | 2023-12-29 | 成都宇亨智能科技有限公司 | Accurate of medicine discharging machine drug delivery control system |
| CN109436399A (en) * | 2018-10-27 | 2019-03-08 | 合肥雄鹰自动化工程科技有限公司 | A kind of powder packaging uses the powder weighing machines people with micro addition function |
| CN109533416A (en) * | 2019-01-23 | 2019-03-29 | 新疆农业科学院农业机械化研究所 | A kind of organic fertilizer packing machine |
| CN111284764A (en) * | 2020-03-05 | 2020-06-16 | 许德祥 | Feed divider that pharmaceutical packaging used |
| CN111284764B (en) * | 2020-03-05 | 2020-12-29 | 刘越 | Feed divider that pharmaceutical packaging used |
| CN111675173A (en) * | 2020-07-27 | 2020-09-18 | 杭州酿蜜科技有限公司 | Automatic filling equipment and filling method for emulsion-like skin care product |
| CN112847809A (en) * | 2020-12-29 | 2021-05-28 | 安徽维东建材股份有限公司 | Dosing equipment for concrete mixing |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20161225 |