CN104338447A - On-line solution mixing device and method - Google Patents
On-line solution mixing device and method Download PDFInfo
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- CN104338447A CN104338447A CN201310333007.0A CN201310333007A CN104338447A CN 104338447 A CN104338447 A CN 104338447A CN 201310333007 A CN201310333007 A CN 201310333007A CN 104338447 A CN104338447 A CN 104338447A
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Abstract
The invention relates to an on-line solution mixing device. The device comprises a first storage tank, a second storage tank, a first rotor pump, a second rotor pump, a homogeneous mixing pump, a third storage tank, a first frequency converter, a second frequency converter and a contactor. The first storage tank is used for storing a solution to be diluted. The second storage tank is used for storing a solvent for dilution. The homogeneous mixing pump is provided with a first input opening, a second input opening and an output opening. The first rotor pump is connected to the first storage tank and the first input opening through pipelines. The second rotor pump is connected to the second storage tank and the second input opening through pipelines. The third storage tank is connected to the output opening of the homogeneous mixing pump through a pipeline. The first frequency converter outputs a first frequency signal to the first rotor pump according to a first flow signal so as to control a rotating speed of the first rotor pump. The second frequency converter outputs a second frequency signal to the second rotor pump according to a second flow signal so as to control a rotating speed of the second rotor pump. The contactor controls operation of the homogeneous mixing pump according to a switching signal.
Description
Technical field
The present invention relates to the devices and methods therefor of solution on-line mixing.
Background technology
For to the consideration in cost of transportation and raw-material stability etc. in daily use chemicals industry, manufacturer directly can buy the material solution of high concentration from outside, and then the material solution of high concentration is diluted to the low concentration raw material that can directly use on producing in our factory.With AES(sodium sulfate of polyethenoxy ether of fatty alcohol, having another name called ethoxylated alkyl sulfate) raw material is example, the AES solution of 25% is a kind of surfactant, and it is a kind of bulk raw material in shampoo industry.
The AES solution preparation process of current routine is: first by AES solution preheating inside drying room (if environment temperature is lower) of 70% high concentration, and then inside agitated kettle by a certain percentage, 70% concentration AES solution and pure water are carried out mixing and stirring, until 70% concentration AES all with water-soluble conjunction, and after Homogeneous phase mixing, obtain the AES dilute solution of 25%.
There is following defect in conventional AES preparation method: floor space large (area occupied of drying room, agitated kettle is larger); Efficiency low (the AES solution of configuration one pot 3 tons usually wants 3 hours, if plan the bad normal production that will have influence on later process done); Not easily fully mix, the AES that often there will be whole group of whole group is not dissolved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of solution on-line mixing method and apparatus, can reduction equipment floor space and improve mixing output.
The present invention be solve the problems of the technologies described above the technical scheme adopted be propose a kind of solution on-line mixing device, comprise the first storage tank, the second storage tank, the first rotor pump, the second impeller pump, homogeneous mixing pump, the 3rd storage tank, the first frequency converter, the second frequency converter and contactor.First storage tank is in order to store solution to be diluted, and the second storage tank is in order to store the solvent of dilution.The first rotor pump connects this first storage tank by pipeline.Second impeller pump connects this second storage tank by pipeline.Homogeneous mixing pump has the first input port, the second input port and delivery outlet, and this first input port connects this first rotor pump by pipeline, and this second input port connects this second impeller pump by pipeline.3rd storage tank connects the delivery outlet of this homogeneous mixing pump by pipeline.First frequency converter is electrically connected this first rotor pump, exports a first frequency signal to this first rotor pump, to control the rotating speed of this first rotor pump according to a first flow signal.Second frequency converter is electrically connected this second impeller pump, exports a second frequency signal to this second impeller pump, to control the rotating speed of this second impeller pump according to one second flow signal.Contactor is electrically connected this homogeneous mixing pump, controls the running of this homogeneous mixing pump according to a switching signal.
In one embodiment of this invention, above-mentioned solution on-line mixing device also comprises controller, connect this first frequency converter and this second frequency converter, in order to receive the setting of the flow to the solution flowing through this first rotor pump, and be converted to this first flow signal, and receive the setting of the flow to the solvent flowing through this second impeller pump, and be converted to this second flow signal.
In one embodiment of this invention, above-mentioned controller also connects this contactor, in order to export this switching signal to this contactor.
In one embodiment of this invention, above-mentioned solution on-line mixing device also comprises: the first liquid-level switch, is located at this first storage tank; Second liquid-level switch, is located at this second storage tank; 3rd liquid-level switch, is located at the 3rd storage tank; Controller, connects this first liquid-level switch, this second liquid-level switch and the 3rd liquid-level switch, supplements raw material in order to the liquid level measured by each liquid-level switch and control the running of this homogeneous mixing pump.
In one embodiment of this invention, when this first tank level is lower than first liquid level, this controller carries out lacking material and reports to the police, and closes this first rotor pump, this second impeller pump and this homogeneous mixing pump simultaneously, when the first tank level is lower than the second liquid level, this controller carries out artificial feed supplement prompting; When this first tank level is higher than the 3rd liquid level, this controller remind terminate artificial feed supplement, wherein the 3rd liquid level higher than this second liquid level higher than this first liquid level.
In one embodiment of this invention, when this second tank level is lower than the 4th liquid level, this controller carries out lacking material and reports to the police, close this first rotor pump, this second impeller pump and this homogeneous mixing pump simultaneously, when the second tank level is lower than the 5th liquid level, this controller determines supplementing solvent inside this second storage tank; When this second tank level is higher than the 6th liquid level, this controller determine terminate supplementing solvent, wherein the 6th liquid level higher than the 5th liquid level higher than the 4th liquid level.
In one embodiment of this invention, when the 3rd tank level is higher than the 7th liquid level, this controller cuts out this first rotor pump, this second impeller pump and this homogeneous mixing pump, when the 3rd tank level is lower than the 8th liquid level, this controller starts this first rotor pump, this second impeller pump and this homogeneous mixing pump, and wherein the 7th liquid level is higher than the 8th liquid level.
The present invention also proposes a kind of solution on-line mixing method, a solution on-line mixing device is utilized to carry out solution dilution, this on-line mixing device comprises the first storage tank, second storage tank, 3rd storage tank, the first rotor pump, second impeller pump, homogeneous mixing pump, first frequency converter, second frequency converter and contactor, this first storage tank is in order to store solution to be diluted, this second storage tank is in order to store the solvent of dilution, this the first rotor pump connects this first storage tank by pipeline, this second impeller pump connects this second storage tank by pipeline, homogeneous mixing pump has the first input port, second input port and delivery outlet, this first input port connects this first rotor pump by pipeline, this second input port connects this second impeller pump by pipeline, 3rd storage tank connects the delivery outlet of this homogeneous mixing pump by pipeline, the method comprises the following steps: export a first flow signal to this first frequency converter, this first frequency converter is made to produce a first frequency signal, export one second flow signal to this second frequency converter, make this second frequency converter produce a second frequency signal, export this first frequency signal to this first rotor pump from this first frequency converter, to control the rotating speed of this first rotor pump, thus determine that this solution is from the flow flowing through this first rotor pump, export this second frequency signal to this second impeller pump from this second frequency converter, to control the rotating speed of this second impeller pump, thus determine that this solvent is from the flow flowing through this second impeller pump, export a switching signal to this contactor, use this contactor to open this homogeneous mixing pump, make this solution and this solvent enter this homogeneous mixing pump from this first input port and this second input port respectively and mix, and the complete solution of mixing is delivered to the 3rd storage tank from the delivery outlet of this homogeneous mixing pump.
In one embodiment of this invention, above-mentioned solution on-line mixing method also comprises and exports this first flow signal, this second flow signal and this switching signal by a controller.
In one embodiment of this invention, above-mentioned solution on-line mixing method also comprises: the liquid level detecting this first storage tank, this second storage tank and the 3rd storage tank respectively; And supplement raw material according to each measured liquid level and control the running of this homogeneous mixing pump.
Solution on-line mixing method and apparatus of the present invention, realizes dilution by the mode of Cemented filling mode and mixing, significantly reduces floor space than agitated kettle hybrid mode in the past.In addition, the mode using impeller pump and frequency converter to combine, accurately can control the flow proportional of solution and solvent, thus obtains concentration target solution accurately.Moreover homogeneous mixing pump continuously carries out the married operation of high speed dispersion, the target solution mixed can be obtained continuously.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates the solution on-line mixing structure drawing of device of one embodiment of the invention.
Fig. 2 illustrates the solution on-line mixing method flow diagram of one embodiment of the invention.
Detailed description of the invention
Fig. 1 illustrates the solution on-line mixing structure drawing of device of one embodiment of the invention.With reference to shown in Fig. 1, this solution on-line mixing device 10 can comprise the first storage tank 11, second storage tank 12, the first rotor pump 13, second impeller pump 14, homogeneous mixing pump 15, the 3rd storage tank 16, controller 17, first frequency converter 18, second frequency converter 19 and contactor 20.First storage tank 11 in order to store solution to be diluted, such as, in daily use chemicals industry conventional AES.This solution concentrated solution that normally concentration is higher.Second storage tank 12 such as, in order to store the solvent of dilution, pure water.The first rotor pump 13 connects the first storage tank 11 by pipeline.Second impeller pump 14 also connects the second storage tank 12 by pipeline.Homogeneous mixing pump 15 has the first input port 151, input port 151, second and delivery outlet 153.First input port 151 connects the first rotor pump 13 by pipeline.Second input port 152 connects the second impeller pump 14 by pipeline.3rd storage tank 16 connects the delivery outlet 153 of homogeneous mixing pump 15 by pipeline.
In electrical control, the first frequency converter 18 is electrically connected the first rotor pump 13.First frequency converter 18 exports a first frequency signal to the first rotor pump 13 according to a first flow signal, to control the rotating speed 13 of the first rotor pump.First flow signal is generally analog signals.Similarly, the second frequency converter 19 is electrically connected the second impeller pump 14, exports second frequency signal to the second impeller pump 14 according to one second flow signal, to control the rotating speed of the second impeller pump 14.In addition, contactor 20 is electrically connected homogeneous mixing pump 15, to control the running of homogeneous mixing pump 15 according to a switching signal.
In the present embodiment, first flow signal, the second flow signal and switching signal can be provided by controller 17.Controller 17 connects the first frequency converter 18 and the second frequency converter 19.Controller 17 can receive the setting of the flow to the solution flowing through the first rotor pump 13, and is converted to above-mentioned first flow signal.Controller 17 also can receive the setting of the flow to the solvent flowing through the second impeller pump 14, and is converted to the second above-mentioned flow signal.In addition, controller 17 connects contactor 20, in order to export above-mentioned switching signal to contactor 20.
Before carrying out mixed diluting, can by solution to be diluted, the such as AES of 70% concentration is stored in the first storage tank 11.In addition, also according to the height of liquid level of the first storage tank 11, manually solution can be added in storage tank.Secondly, adopt Cemented filling mode, by the first rotor pump 13, solution is delivered to from the first storage tank 11 first input port 151 of homogeneous mixing pump 15.Meanwhile, by solution, such as pure water is stored in the second storage tank 12.In addition, also can according to the height of liquid level of the second storage tank 12, automatically toward supplementing solvent in the second storage tank 12.Same, adopt Cemented filling mode, by the second impeller pump 14, solvent is delivered to from the second storage tank 12 second input port 152 of homogeneous mixing pump.Solution and solvent are carried out high speed dispersion by homogeneous mixing pump 15, fully mix, then the direct dilute solution that will prepare in proportion, and the AES dilute solution of such as 25% sends into the 3rd storage tank 16 by pipeline.
Highly concentrated solution will be diluted to the solution of low concentration, the key of control controls both flow proportional respectively well.
The present embodiment utilizes impeller pump to control to be directly proportional to rotating speed this characteristic to fluid flow, by selecting the pattern of " impeller pump+frequency converter " to realize stable flow-control in solution and solvent flux control, and this flow according to the change of frequency converter output frequency, can form linear change.For this reason, first according to processing compound requirement, man-machine interface 21 arranges the flow (unit is: liter/second) needed for highly concentrated solution, and by communication interface by this Parameter transfer to controller 17.Controller 17, by this flow set, converts the acceptable 4-20mA analog signals of frequency converter 18,19 to and exports to frequency converter 18,19.Frequency converter 18,19, according to the analog signals received, exports corresponding frequency signal to impeller pump 13,14, thus realizes controlling the rotating speed of impeller pump 13,14.
Above, the relation between impeller pump rotating speed and setting flow is as follows:
In above formula (1): V is the rotating speed (unit: rpm) of impeller pump;
Q
xfor the flow (unit: liter/second) that touch-screen sets;
Q
maxfor the metered flow (unit: liter/second) of impeller pump;
V
maxfor the specified maximum speed (unit: rpm) of impeller pump;
Above, the relation between frequency converter running frequency and setting flow is as follows:
In above formula: F is frequency converter running frequency (unit: HZ)
Q
xfor the flow (unit: liter/second) that touch-screen sets
Q
maxfor the metered flow (unit: liter/second) of impeller pump
50 is the specified maximum running frequency (unit: HZ) of impeller pump
Being the same to the flow control methods of solvent with the method controlled liquid inventory, is uniquely different unlike the flow parameter set in man-machine interface.
In a preferred embodiment, the first storage tank 11 is provided with the first liquid-level switch.Second storage tank 12 is provided with the second liquid-level switch.3rd storage tank 16 is provided with the 3rd liquid-level switch.Each liquid-level switch is for measuring the liquid level of each storage tank and sending to the controller 17 be attached thereto.Controller 17 liquid level measured by each liquid-level switch can carry out the running of supplementary raw material and control homogeneous mixing pump 15.
Such as, when this first tank level is lower than one first liquid level (LL1), this controller carries out lacking material and reports to the police, and closes the first rotor pump 13, second impeller pump 14 and homogeneous mixing pump 15 simultaneously.When the first tank level is lower than the second liquid level (LM1), controller 17 carries out artificial feed supplement prompting; When the first tank level is higher than the 3rd liquid level (LH1), controller 17 is reminded and is terminated artificial feed supplement.Wherein LH1>LM1>LL1.
For the second storage tank 12, when the second tank level is lower than the 4th liquid level (LL2), carries out lacking material and report to the police, close the first rotor pump 13, second impeller pump 14 and homogeneous mixing pump 15 simultaneously; When the second tank level is lower than the 5th liquid level (LM2), controller 17 determines supplementing solvent inside the second storage tank; When the second tank level is higher than the 6th liquid level (LH2), controller 17 determines to cut out solvent make-up.Wherein LH2>LM2>LL2.
For the 3rd storage tank 16, when the 3rd tank level is higher than the 7th liquid level (LH3), controller 17 cuts out the first rotor pump 13, second impeller pump 14 and homogeneous mixing pump 15, when the 3rd tank level is lower than the 8th liquid level (LM3), controller 17 starts the first rotor pump 13, second impeller pump 14 and homogeneous mixing pump 15.
Touch-screen can be used in the present embodiment as above-mentioned man-machine interface, be connected by MPI communication between touch-screen with controller 17.
Fig. 2 illustrates the solution on-line mixing method flow diagram of one embodiment of the invention.With reference to shown in Fig. 2, conclude, the on-line mixing method flow of the present embodiment is as follows:
Step 201, exports first flow signal to the first frequency converter 18, makes the first frequency converter 18 produce a first frequency signal;
Step 202, exports one second flow signal to the second frequency converter 19, makes the second frequency converter 19 produce a second frequency signal;
Step 203, exports this first frequency signal to the first rotor pump 13 from the first frequency converter 18, to control the rotating speed of the first rotor pump 13, thus determines that this solution flows through the flow of the first rotor pump 13;
Step 204, exports this second frequency signal to the second impeller pump 14 from the second frequency converter 19, to control the rotating speed of the second impeller pump 14, thus determines that this solvent flows through the flow of the second impeller pump 14;
Step 205, exports a switching signal to contactor 20;
Step 206, uses contactor 20 to open homogeneous mixing pump 15, makes this solution and this solvent enter this homogeneous mixing pump 15 from this first input port 151 and this second input port 152 respectively and mixes;
Step 207, is delivered to the 3rd storage tank 16 by the complete solution of mixing from the delivery outlet 153 of homogeneous mixing pump 15.
Therefore, the solution on-line mixing method and apparatus of the embodiment of the present invention, realizes dilution by the mode of Cemented filling mode and mixing, significantly reduces floor space than agitated kettle hybrid mode in the past.In addition, the mode using impeller pump and frequency converter to combine, accurately can control the flow proportional of solution and solvent, thus obtains concentration target solution accurately.Moreover homogeneous mixing pump continuously carries out the married operation of high speed dispersion, the target solution mixed can be obtained continuously.
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, change or the replacement of various equivalence also can be made when not departing from spirit of the present invention, therefore, as long as all will drop in the scope of claims of the application the change of above-described embodiment, modification in spirit of the present invention.
Claims (10)
1. a solution on-line mixing device, comprising:
First storage tank, in order to store solution to be diluted;
Second storage tank, in order to store the solvent of dilution;
The first rotor pump, connects this first storage tank by pipeline;
Second impeller pump, connects this second storage tank by pipeline;
Homogeneous mixing pump, has the first input port, the second input port and delivery outlet, and this first input port connects this first rotor pump by pipeline, and this second input port connects this second impeller pump by pipeline;
3rd storage tank, connects the delivery outlet of this homogeneous mixing pump by pipeline;
First frequency converter, is electrically connected this first rotor pump, exports a first frequency signal to this first rotor pump, to control the rotating speed of this first rotor pump according to a first flow signal;
Second frequency converter, is electrically connected this second impeller pump, exports a second frequency signal to this second impeller pump, to control the rotating speed of this second impeller pump according to one second flow signal; And
Contactor, is electrically connected this homogeneous mixing pump, controls the running of this homogeneous mixing pump according to a switching signal.
2. solution on-line mixing device as claimed in claim 1, is characterized in that, also comprise:
Controller, connect this first frequency converter and this second frequency converter, in order to receive the setting of the flow to the solution flowing through this first rotor pump, and be converted to this first flow signal, and receive the setting of the flow to the solvent flowing through this second impeller pump, and be converted to this second flow signal.
3. solution on-line mixing device as claimed in claim 2, it is characterized in that, this controller also connects this contactor, in order to export this switching signal to this contactor.
4. solution on-line mixing device as claimed in claim 1, is characterized in that, also comprise:
First liquid-level switch, is located at this first storage tank;
Second liquid-level switch, is located at this second storage tank;
3rd liquid-level switch, is located at the 3rd storage tank;
Controller, connects this first liquid-level switch, this second liquid-level switch and the 3rd liquid-level switch, supplements raw material in order to the liquid level measured by each liquid-level switch and control the running of this homogeneous mixing pump.
5. solution on-line mixing device as claimed in claim 4, it is characterized in that, when this first tank level is lower than first liquid level, this controller carries out lacking material and reports to the police, close this first rotor pump, this second impeller pump and this homogeneous mixing pump simultaneously, when the first tank level is lower than the second liquid level, this controller carries out artificial feed supplement prompting; When this first tank level is higher than the 3rd liquid level, this controller remind terminate artificial feed supplement, wherein the 3rd liquid level higher than this second liquid level higher than this first liquid level.
6. solution on-line mixing device as claimed in claim 4, it is characterized in that, when this second tank level is lower than the 4th liquid level, this controller carries out lacking material and reports to the police, close this first rotor pump, this second impeller pump and this homogeneous mixing pump simultaneously, when the second tank level is lower than the 5th liquid level, this controller determines supplementing solvent inside this second storage tank; When this second tank level is higher than the 6th liquid level, this controller determine terminate supplementing solvent, wherein the 6th liquid level higher than the 5th liquid level higher than the 4th liquid level.
7. solution on-line mixing device as claimed in claim 4, it is characterized in that, when the 3rd tank level is higher than the 7th liquid level, this controller cuts out this first rotor pump, this second impeller pump and this homogeneous mixing pump, when the 3rd tank level is lower than the 8th liquid level, this controller starts this first rotor pump, this second impeller pump and this homogeneous mixing pump, and wherein the 7th liquid level is higher than the 8th liquid level.
8. a solution on-line mixing method, a solution on-line mixing device is utilized to carry out solution dilution, this on-line mixing device comprises the first storage tank, second storage tank, 3rd storage tank, the first rotor pump, second impeller pump, homogeneous mixing pump, first frequency converter, second frequency converter and contactor, this first storage tank is in order to store solution to be diluted, this second storage tank is in order to store the solvent of dilution, this the first rotor pump connects this first storage tank by pipeline, this second impeller pump connects this second storage tank by pipeline, homogeneous mixing pump has the first input port, second input port and delivery outlet, this first input port connects this first rotor pump by pipeline, this second input port connects this second impeller pump by pipeline, 3rd storage tank connects the delivery outlet of this homogeneous mixing pump by pipeline, the method comprises the following steps:
Export a first flow signal to this first frequency converter, make this first frequency converter produce a first frequency signal;
Export one second flow signal to this second frequency converter, make this second frequency converter produce a second frequency signal;
Export this first frequency signal to this first rotor pump from this first frequency converter, to control the rotating speed of this first rotor pump, thus determine that this solution is from the flow flowing through this first rotor pump;
Export this second frequency signal to this second impeller pump from this second frequency converter, to control the rotating speed of this second impeller pump, thus determine that this solvent is from the flow flowing through this second impeller pump;
Export a switching signal to this contactor;
Use this contactor to open this homogeneous mixing pump, make this solution and this solvent enter this homogeneous mixing pump from this first input port and this second input port respectively and mix; And
The complete solution of mixing is delivered to the 3rd storage tank from the delivery outlet of this homogeneous mixing pump.
9. solution on-line mixing method as claimed in claim 8, is characterized in that, also comprise and export this first flow signal, this second flow signal and this switching signal by a controller.
10. solution on-line mixing method as claimed in claim 8, is characterized in that, also comprise:
Detect the liquid level of this first storage tank, this second storage tank and the 3rd storage tank respectively; And
Supplement raw material according to each measured liquid level and control the running of this homogeneous mixing pump.
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| CN106442075A (en) * | 2016-08-31 | 2017-02-22 | 华中科技大学 | Fully-automatic liquid mixing and changing device |
| CN107096412A (en) * | 2017-06-27 | 2017-08-29 | 广州新浪爱拓化工机械有限公司 | AES dilutes integrated system |
| CN107321207A (en) * | 2017-07-03 | 2017-11-07 | 湖州职业技术学院 | A kind of solution dilution process and equipment |
| CN107875961A (en) * | 2017-12-25 | 2018-04-06 | 苏州擎动动力科技有限公司 | Nano-powder decentralized system |
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Application publication date: 20150211 |