CN204302303U - A kind ofly to test the speed and metering device and the hybrid system using this device - Google Patents
A kind ofly to test the speed and metering device and the hybrid system using this device Download PDFInfo
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- CN204302303U CN204302303U CN201420131072.5U CN201420131072U CN204302303U CN 204302303 U CN204302303 U CN 204302303U CN 201420131072 U CN201420131072 U CN 201420131072U CN 204302303 U CN204302303 U CN 204302303U
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 59
- 238000005259 measurement Methods 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004260 weight control Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
Utilize testing the speed and a metering device of single channel pulse feedback, comprise lock-out pulse dish, measuring pump, tachogenerator and controller.Lock-out pulse dish is discoid, is fixed on the pump shaft of the measuring pump that needs test the speed, is provided with multiple tooth bars of equidistant arrangement by disc centre to periphery radiation; Tachogenerator tests the speed to lock-out pulse dish, according to the tooth bar that lock-out pulse dish is arranged and space, produces pulse signal; Controller real-time reception, from the pulse signal of tachogenerator, records time of reception simultaneously, obtains measuring pump and completes umber of pulse needed for total displacement, control the outlet valve of measuring pump according to technological requirement.The utility model also provides a kind of hybrid system using this device.The utility model is controlled by the output of umber of pulse to measuring pump, has that rate accuracy is high, Weight control precision is high, stability is high, simple to operate, cost is low, installation is easy, automaticity advantages of higher.
Description
Technical field
The present invention relates to and a kind ofly utilize testing the speed and metering device and the hybrid system using this device of single channel pulse feedback, be particularly useful for polyurethane plant field.
Background technology
In polyurethane product technique, need multiple different group material proportioning as requested to mix, after respectively often kind of group material being injected into mixer, continue follow-up operation.More accurate to the metering of each group of material, the property indices of product (footwear) is more excellent.
All the time, the mode that polyurethane plant is used for testing the speed is not use simple pulse mode exactly with expensive encoder.Though the former can record more accurate data, the encoder price used is very high, and assembling threshold is high, one and carelessness will damage expensive encoder causes very large loss.The latter uses the even mechanical switch of simple inductor sensor to catch pulse signal, data are drawn through simple calculations, this method not only low precision, stability is poor, and can catch less or catch when rotating speed is slightly high less than pulse signal, cause very large control error, can not meet present requirement far away.
The mode of existing measuring pump measure control is all carry out measure control with the time, once measuring pump rotating speed changes, just needs to re-start sampling correction, and neither handled easily, measure control precision are again less than good guarantee.
If use traffic meter measures, in the industry that some need high-precision measuring to control as footwear, chemical industry, medicine etc., just must use the inlet flow rate meter that price is very expensive, considerably increase production cost, and some metering object media also inapplicable flowmeters, the popularization constraining now high-tech equipment of making rapid progress in technology and use.
Use above-mentioned technology to carry out testing the speed and measuring, there is many deficiencies, the footwear performance quality produced by this type of technology does not often reach requirement.Even connect external shoe machine manufacturer as De Sima, also in artificial this example of adjustment mixing of use, measure the requirement that the method controlled with the time far from meets technology today trend.
Summary of the invention
For solving the problem, the invention provides and a kind ofly utilize testing the speed and metering device of single channel pulse feedback, comprise lock-out pulse dish, measuring pump, tachogenerator and controller, lock-out pulse dish is discoid, be provided with multiple tooth bars of equidistant arrangement to periphery radiation by disc centre, by pulse disc N decile, space is formed between each tooth bar, lock-out pulse dish is fixed on by the axle being positioned at its center on the pump shaft of the measuring pump needing to test the speed, synchronous axial system is kept: tachogenerator tests the speed to lock-out pulse dish with pump shaft, according to the tooth bar that lock-out pulse dish is arranged and space, lock-out pulse dish often rotates and can produce a N number of pulse signal in: controller real-time reception is from the pulse signal of tachogenerator, record time of reception simultaneously, calculate the revolutions per minute of measuring pump pump shaft, and then according to the total displacement that one week discharge capacity and the current needs of measuring pump complete, determine the revolution number of pump shaft, and the umber of pulse obtained needed for total displacement, the outlet valve of measuring pump is controlled, when reaching required pulse number, outlet valve is closed immediately.
Especially, this application of installation, in the metering of each group of material of the mixing of polyurethane plant, is rotated by the pump shaft of motor driven metering pump.
Wherein, tachogenerator adopts photoelectrical coupler, is inserted in the measurement groove of photoelectrical coupler the periphery of lock-out pulse dish.
Preferably, lock-out pulse dish is stamped to form by sheet metal, and lock-out pulse dish has 100 tooth bars.
The hybrid system of the present invention's also a kind of many group material, uses multiple above-mentioned testing the speed to organize after material measures to often kind respectively with metering device, then mixes,
First, in the multiple group of material needing mixing, a kind of benchmark group material is selected;
Secondly, according to the weight of benchmark group material of mixing and the discharge capacity PB of every pulse equal portions in grams of benchmark group material measuring pump, the pulse equal portions quantity MB that required benchmark group material measuring pump runs is obtained;
Again, when the rotating speed UB of benchmark component measuring pump in units of rev/min determines, according to benchmark group material and the ratio BS of other a certain group of material of setting, set this other the rotating speed UA of a certain measuring pump in units of rev/min as follows:
UA＝[(PB*UB)/BS]/PA；
Subsequently, the rotating speed of other group material measuring pumps in units of rev/min is determined successively;
Finally, according to the umber of pulse that this certain group of material weight of mixing and the isodisperse of this certain group of material group material lock-out pulse dish measure, control the outlet valve of this certain group of material measuring pump, make it when reaching corresponding pulses number to close immediately.
The hybrid system of the present invention's also a kind of many group material, uses two above-mentioned testing the speed to organize after material measures to two kinds respectively with metering device, then mixes,
First, in the multiple group of material needing mixing, a kind of benchmark group material is selected;
Secondly, organize the discharge capacity PB often enclosed in grams of the mixed proportion BS compared with expecting, benchmark group material measuring pump according to the target weight R of in grams two kinds group material, benchmark group material and another of setting after mixing, the pulse equal portions quantity MB that can obtain the operation of required benchmark group material measuring pump is:
MB＝R*100/[PB*(BS+1)/BS]；
Again, when the rotating speed UB of benchmark component measuring pump in units of rev/min determines,
Again, when the rotating speed UB of benchmark component measuring pump in units of rev/min determines, according to benchmark group material and the ratio BS of other a certain group of material of setting, set this other the rotating speed UA of a certain measuring pump in units of rev/min as follows:
UA＝[(PB*UB)/BS]/PA；
Subsequently, the rotating speed of other group material measuring pumps in units of rev/min is determined successively;
Finally, according to the umber of pulse that this certain group of material weight of mixing and the isodisperse of this certain group of material group material lock-out pulse dish measure, control the outlet valve of this certain group of material measuring pump, make it when reaching corresponding pulses number to close immediately.
Device of the present invention and system have that rate accuracy is high, Weight control precision is high, stability is high, simple to operate, cost is low, installation is easy, automaticity advantages of higher.
Accompanying drawing explanation
Fig. 1 of the present inventionly utilizes testing the speed and metering device structural representation of single channel pulse feedback;
Fig. 2 of the present inventionly utilizes testing the speed and the lock-out pulse dish structure chart of metering device of single channel pulse feedback.
1-motor 2-machine shaft 3-lock-out pulse dish 4-tachogenerator 5-measuring pump
6-pump shaft 7-tooth bar 8-lock-out pulse dish axis hole
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, in a preferred embodiment of the invention, the testing the speed of single channel pulse feedback that utilize for polyurethane plant comprises lock-out pulse dish 3, measuring pump 5, tachogenerator 4 and controller (not shown) with metering device, and motor 1 drives the pump shaft 6 of measuring pump 5 to rotate by machine shaft 2.
As shown in Figure 2, lock-out pulse dish 3 is discoid, and available sheet metal is stamped to form, and is provided with multiple tooth bars 7 of equidistant arrangement by disc centre to periphery radiation, is 100 in the preferred embodiment, by pulse disc decile, is formed with space between each tooth bar 7.Lock-out pulse dish 3 is fixed on by axis hole 8 on the pump shaft 6 of the measuring pump 5 needing to test the speed, with its maintenance synchronous axial system.
Tachogenerator 4 pairs of lock-out pulse dishes 3 test the speed.Tachogenerator 4 can adopt photoelectrical coupler (optoelectronic switch), at correct position, tachogenerator 4 is installed, the periphery of pulse disc 3 is made to insert in the measurement groove of photoelectrical coupler, as shown in Figure 1, such pulse disc 3 photoelectrical coupler that rotates a circle just can capture 100 pulse signals.
Controller real-time reception, from the pulse signal of tachogenerator 4, records the time of reception of every 100 pulse signals simultaneously, and then calculates the rotating speed V (rev/min) per minute of measuring pump pump shaft 6, and formula is as follows:
V＝S/Q
Wherein: S=60*1000*1000 (microsecond)
The time (microsecond) that Q=rotating shaft rotates a circle
By test: lock-out pulse dish is arranged in servomotor rotating shaft, rotating speed is from 20 rev/min to 1000 rev/min, carry out contrast experiment respectively, the rotating speed that result shows rotating speed and the servomotor controller itself recorded by this new method is basically identical, can be matched in excellence or beauty the rotary speed precision of servomotor, V can be as accurate as ± 0.1 rev/min, if the hardware performance of control device is high, can also be accurate to 2 significant digits number.
As mentioned above, in a preferred embodiment of the invention, the pump shaft of measuring pump 5 can be rotated a circle and be subdivided into 100 equal portions, the measuring pump being 10 grams as one week discharge capacity runs pulse equal portions, is exactly 10/100=0.1 gram.
Calculate the revolutions per minute of measuring pump pump shaft, and then according to the total displacement that one week discharge capacity and the current needs of measuring pump complete, determine the revolution number of pump shaft, and obtained the umber of pulse needed for total displacement, control the outlet valve of measuring pump, when reaching required pulse number, outlet valve is closed immediately.
Material is organized when needing mixing two kinds in production technology---when A group material is expected with B group, adopt as shown in Figure 1 two metering device metering material that test the speed respectively, mix, following algorithm can be adopted to carry out correlation computations.
First, mixed proportion BS compared with expecting with A group according to the B group material of the target weight R of in grams two kinds group material after mixing, setting, B group expect the discharge capacity PB often enclosed in grams of measuring pump, can obtain required B group and expect that pulse equal portions quantity (both umber of pulse) MB of measuring pump operation is:
MB＝R*100/[PB*(BS+1)/BS]。
Secondly, when the rotating speed UB of B Sets of Measurement pump in units of rev/min determines, the ratio BS expected with A group according to the B group material of setting, the rotating speed UA of setting A Sets of Measurement pump in units of rev/min, from motion tracking B Sets of Measurement pump, as follows:
UA＝[(PB*UB)/BS]/PA。
Finally, expect according to A group material weight and A group the umber of pulse that the isodisperse of lock-out pulse dish measures, the outlet valve of control A Sets of Measurement pump, makes it when reaching corresponding pulses number to close immediately, can obtain extraordinary compound Weight control precision.
In this way can when B Sets of Measurement revolution speed be determined, the ratio of metering device in setting that test the speed of A group material is from motion tracking, or when ratio is determined by the rotating speed of B Sets of Measurement pump from motion tracking, the opening and closing while that A group material measuring pump outlet valve and B group expecting measuring pump outlet valve, finally compound weight precision out can reach ± 0.3% within.
In addition, in batch mixing process, can the real-time scale B that expect with A group of Real-Time Monitoring B group material, expect that measuring pump delivery PB, A group expects that measuring pump is in fact according to A group material metering pump delivery PA, B group
In addition, in batch mixing process, can the real-time scale B that expect with A group of Real-Time Monitoring B group material, expect that measuring pump actual speed VA and B group expect measuring pump actual speed VB according to A group material metering pump delivery PA, B group material metering pump delivery PB, A group, the real-time scale B that B group is expected and A group is expected can be determined:
B＝(PB*VB)/(PA*VA)。
It is more close that B group material and real-time scale B and the B that A group is expected organize the mixed proportion BS compared with expecting to expect with A group, and measuring accuracy is higher.
After tested, first from the every speed value of 20-300 rev/min, discharge one turn of discharge capacity of single metering pump respectively, weight (flow that test and measuring pump often turns is linear) then input system determination measuring pump discharge capacity is gone out with balance weighing apparatus scale, reset the data such as ratio, rotating speed, compound weight, to carry out mixing discharge by different rotating speeds different proportion, then contrast with the compound weight of setting, result reaches completely ± the weight precision controlling requirement of 0.3%.
The preferred embodiments of the present invention mix for the group material in polyurethane plant field, but those skilled in the art answer and know, are suitable for the present invention equally at other field.
The preferred embodiments of the present invention are mixed into example with two kinds of group material and are described, but those skilled in the art should know, when needs multiple group of material mixing, multiple metering device that tests the speed can be utilized, with one of them group material for benchmark, as the B group material adopted in the preferred embodiment of the present invention, according to the proportionate relationship of other group material with benchmark group material, adopt the umber of pulse that as above algorithm obtains corresponding to each group of material, the outlet valve of measuring pump is controlled, the requirement that high accuracy controls can be arrived equally.
Below the preferred embodiment of the invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modification or replacement under the prerequisite without prejudice to the invention spirit, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (6)
1. utilize testing the speed and a metering device of single channel pulse feedback, it is characterized in that: comprise lock-out pulse dish, measuring pump, tachogenerator and controller,
Lock-out pulse dish is discoid, be provided with multiple tooth bars of equidistant arrangement by disc centre to periphery radiation, by pulse disc N decile, between each tooth bar, be formed with space, lock-out pulse dish is fixed on the pump shaft of the measuring pump needing to test the speed by the axle being positioned at its center, keeps synchronous axial system with pump shaft;
Tachogenerator tests the speed to lock-out pulse dish, and according to the tooth bar that lock-out pulse dish is arranged and space, lock-out pulse dish often rotates and can produce a N number of pulse signal in;
Controller real-time reception is from the pulse signal of tachogenerator, record time of reception simultaneously, calculate the revolutions per minute of measuring pump pump shaft, and then according to the total displacement that one week discharge capacity and the current needs of measuring pump complete, determine the revolution number of pump shaft, and the umber of pulse obtained needed for total displacement, the outlet valve of measuring pump being controlled, when reaching required pulse number, outlet valve being closed immediately.
2. device as claimed in claim 1, is characterized in that: it is applied to the metering of each group of material of the mixing of polyurethane plant, is rotated by the pump shaft of motor driven metering pump.
3. device as claimed in claim 1, is characterized in that: tachogenerator adopts photoelectrical coupler, is inserted in the measurement groove of photoelectrical coupler the periphery of lock-out pulse dish.
4. device as claimed in claim 1, is characterized in that: lock-out pulse dish is stamped to form by sheet metal.
5. device as claimed in claim 1, is characterized in that: lock-out pulse dish has 100 tooth bars.
6. a hybrid system for the material of group more than, is characterized in that: use two or more testing the speed as described in one of claim 1-5 to organize after material measures often kind respectively with metering device and mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131072.5U CN204302303U (en) | 2014-03-20 | 2014-03-20 | A kind ofly to test the speed and metering device and the hybrid system using this device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131072.5U CN204302303U (en) | 2014-03-20 | 2014-03-20 | A kind ofly to test the speed and metering device and the hybrid system using this device |
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| CN204302303U true CN204302303U (en) | 2015-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931719A (en) * | 2014-03-20 | 2015-09-23 | 浙江海峰制鞋设备有限公司 | Speed measurement and metering device, mixing system using the device and mixing method |
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2014
- 2014-03-20 CN CN201420131072.5U patent/CN204302303U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931719A (en) * | 2014-03-20 | 2015-09-23 | 浙江海峰制鞋设备有限公司 | Speed measurement and metering device, mixing system using the device and mixing method |
| CN104931719B (en) * | 2014-03-20 | 2018-06-08 | 浙江海峰制鞋设备有限公司 | A kind of mixed method of the hybrid system of multigroup material |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000, Torch Road, torch garden, Lucheng District, Zhejiang, Wenzhou 1 Patentee after: Zhejiang Haifeng automation equipment Co.,Ltd. Address before: 325000, Torch Road, torch garden, Lucheng District, Zhejiang, Wenzhou 1 Patentee before: ZHEJIANG HAIFENG SHOE MAKING EQUIPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150429 |