CN106111380A - A kind of venturi powder pump intelligent air control method - Google Patents
A kind of venturi powder pump intelligent air control method Download PDFInfo
- Publication number
- CN106111380A CN106111380A CN201610649105.9A CN201610649105A CN106111380A CN 106111380 A CN106111380 A CN 106111380A CN 201610649105 A CN201610649105 A CN 201610649105A CN 106111380 A CN106111380 A CN 106111380A
- Authority
- CN
- China
- Prior art keywords
- gas
- powder
- carrier gas
- supply
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a kind of venturi powder pump intelligent air control method, the present invention utilizes the principle that gas gross is constant, when powder output adjusts, inverse proportion is adjusted it and supplies the proportionate relationship of powder gas by carrier gas automatically, and the supply of this carrier gas allows operator revised and change；After correction completes, system sets the side-play amount of setting value in numerical value and program by automatically recording, and system forms a new carrier gas biasing gradient curve according to this side-play amount；When using this system again, the numerical value that the new carrier gas reading superposition correction side-play amount biases gradient curve corresponding is assigned to carrier gas numerical value by system；Air total quantity reset gradient curve also synchronizes to be increased or decreased corresponding amount of bias simultaneously, forms real gas total amount and carrier gas tolerance, it is not necessary to re-starts adjustment operation, uses convenience more.
Description
Technical field
The present invention relates to the control of venturi powder pump, particularly a kind of venturi powder pump intelligent air control method.
Background technology
The device that the most traditional powdered rubber is delivered to when spray gun or other device be to use venturi principle realizes,
Venturi is set up a parital vacuum and is carried out the powder in suction powder container, and the powder then this fluidized is soft by one
Pipe is jetted to terminal spray gun.For a long time, this Venturi selects as preferential because it controls simple and low cost
The method selected is for the transmission field of dusty spray, and its compressed-air actuated control method is the most artificial to be set.Venturi
Promote gas and the pressure of carrier gas and flow be to control the size of Venturi conveying spraying substance output and flow velocity closes
Bond parameter.It is that the experience fully relying on operator regulates in operation.
The Venturi of the overwhelming majority all includes two kinds of variable compressive air supplies: first variable airflow is supplied to
Venturi nozzle use, the size of nozzle air-flow determines partial vacuum and the size of powder conveying capacity of Venturi, this
Individual air-flow commonly referred to as " supplies powder gas " or " conveying gas "；The powderject that second variable airflow is supplied to Venturi is defeated
The pipeline going out end is internal in order to obtain the most controlled Dual-Phrase Distribution of Gas olid, normally referred to as " carrier gas " or " additional
Gas ".
Generally the two compressed air supply is independent regulation, first sets " supplying powder gas " and determines powder
The size of output, then sets " carrier gas " according to the powder situation that lance ejection goes out, ensures the sky that gun slot sprays
Gas and mixture of powders as far as possible steadily and do not have " telling powder " phenomenon.
Although many operators and equipment manufacturers are thought: when increasing for powder gas, carrier gas also should increase simultaneously, but
In most cases, practical situation is but just the opposite.
Actually this is because powder outlet quantity does not has linear relationship with the flow for powder gas, so when increasing for powder gas,
Powder output will not be increased in same ratio, relatively can be less.
Thus, this principle is advantageous for maintaining a constant air-flow and rate of powder to pass through defeated powder flexible pipe and spray gun,
When increasing for powder air-flow, carrier gas should suitably reduce.This not only ensures a powder stream more stably, also ensure that from
Gun slot ejects stable powder atomization shape and jet length, and this concept is referred to as " air total amount " control.
The principle of this control method is, the total amount of venturi powder pump input gas is gas gross, and described gas gross is
For powder gas and the supply sum of carrier gas, the supply for powder gas and carrier gas can be independently controlled, respectively according to literary composition
Gas gross is set as a steady state value by the maximum powder output of the setting of powder pump in mound, accounts for gas for the supply of powder gas total
The ratio of amount is for for powder to air ratio example, and it is carrier gas ratio that the supply of carrier gas accounts for the ratio of gas gross, for powder to air ratio example with
Carrier gas ratio is inversely proportional to, and when powder output adjusts, inversely proportional adjusts carrier gas and the proportionate relationship for powder gas, maintains
Gas gross is constant, and can reach required powder output, by this control method, is conducive to maintaining a constant air-flow
With rate of powder by defeated powder flexible pipe and spray gun, easy to control, when increasing for powder gas, carrier gas should suitably reduce, and this is not
Only ensure that a powder stream more stably, also ensure that and eject stable powder atomization shape and jet length from gun slot
From.
As shown in fig. 1, under gas gross control, the two air controls to be no longer treated as powder gas and carrier gas,
And become gas gross.The adjustment of powder output is depended in gas gross for powder gas and carrier gas ratio in gas gross
Example, such as maximum powder output are exactly the maximum by being adjusted to gas gross for powder gas, and carrier gas automatically adjusts simultaneously
Contrary ratio to gas gross.
When required maximum powder output reduces, as in figure 2 it is shown, when actually required maximum powder output reduces
To Fig. 1 75% time, gas gross is adjusted in Fig. 1 the 75% of gas gross, sends out the regulation of ratio for powder gas and dilution
Gas ratio in gas gross can realize the regulation of powder output.
Gas gross controls to realize by the frame for movement of the mass air flow sensor interconnected, it is possible to by by motor
The mass air flow sensor or the proportional flow control valve that drive realize this function, configure master control system, and be arranged on above hand-operated gun is long-range
Control function and can be used for regulating the size of powder outlet quantity, the most only need to be conveniently adjusted a powder output parameter, and without adjusting
The size of joint carrier gas.
The concept that gas gross controls, is not only and will be automatically adjusted to contrary proportionate relationship for powder gas and carrier gas, and
Gas gross can be made adjustment by operator.The conveying enabling powder reaches the purpose steadily carried.
In gas gross control system, air mass flow is typically shown as " cube m/h ", it is also possible to can use other unit
Display, such as " liter/second " or directly represents with a percentage ratio.
One of gas gross control system is undesirable is characterised by obtainable maximum total equal to maximum gas for powder gas
The setting value of amount.This means if gas gross be have adjusted by operator, then the output of powder also will adjust simultaneously, i.e.
In the case of making powder output be set in and do not change.Operator may need that powder output is made second time and adjust,
Recover correct powder output valve.
Another undesirable feature of gas gross control system is: begin for the proportionate relationship between powder gas and diluent air
Being fixing eventually, operator cannot adjust proportionate relationship between the two.If the practical situation of air-powder stream is not suitable for thing
The proportionate relationship first set, increase is arranged the difficulty of optimal powder volume and flow by this.Such as: the proportion of powder and particle diameter
Sometimes for the diluent air amount of different proportion, or different powder delivery hose length or powder path are different, it is also desirable to
Different dilution tolerance.
Another of gas gross control system is unwelcome to be characterised by: many operators, and particularly those have been
Custom individually adjusts for powder gas and the operator of carrier gas, and the principle that gas gross controls is the most intelligible, and this will affect
Gas gross control system proper use of.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of venturi powder pump intelligent air control method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of venturi powder pump intelligent air control method, the total amount of venturi powder pump input gas is gas gross, described gas
Total amount is that the supply for powder gas and carrier gas can be independently controlled respectively for powder gas and the supply sum of carrier gas,
Gas gross is set as a steady state value by the powder output according to venturi powder pump, and the supply for powder gas accounts for gas gross
Ratio is for for powder to air ratio example, and it is carrier gas ratio that the supply of carrier gas accounts for the ratio of gas gross, for powder to air ratio example and dilution
Gas ratio is inversely proportional to.
The supply of carrier gas has a side-play amount, and the supply of carrier gas and offset adjusted amount are actual carrier gas gas
Amount, adjusts the supply for powder gas according to actual carrier gas tolerance.
Supply for powder gas and carrier gas coordinates gas control valve to control by digital programmable electric-control system.
Supply for powder gas and carrier gas coordinates gas control valve to control by simulation electric-control system.
Supply for powder gas and carrier gas coordinates gas control valve to control by machinery.
The invention has the beneficial effects as follows: the present invention utilizes the principle that gas gross is constant, when powder output adjusts,
Inverse proportion is adjusted it and supplies the proportionate relationship of powder gas by carrier gas automatically, and the supply of this carrier gas allows operator to be revised
And change；After correction completes, system sets the side-play amount of setting value in numerical value and program by automatically recording, and system is according to this skew
Amount forms a new carrier gas biasing gradient curve；When using this system again, system will read superposition and revise skew
The numerical value that the new carrier gas of amount biases gradient curve corresponding is assigned to carrier gas numerical value；Air total quantity reset gradient curve simultaneously
Also synchronize to be increased or decreased corresponding amount of bias, form real gas total amount and carrier gas tolerance, it is not necessary to re-start adjustment behaviour
Make, use convenience more.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the linear schematic diagram of control of gas gross of the present invention；
Fig. 2 be real gas total amount of the present invention be the linear schematic diagram of control during the 75% of Fig. 1 gas gross；
Fig. 3 is present invention control linear schematic diagram when adding carrier gas side-play amount.
Detailed description of the invention
For solving above-mentioned problem, the present invention also provides for a control method, with reference to Fig. 3, and a kind of venturi powder pump Intelligent air
Pneumatic control method, referred to as intelligent air control method, utilize the principle that gas gross is constant, when powder output adjusts, dilute
Inverse proportion is adjusted it and for the proportionate relationship of powder gas by outgassing automatically, the supply of this carrier gas allow operator to be revised and
Change；After correction completes, system sets the side-play amount of setting value in numerical value and program by automatically recording, and system is according to this side-play amount
Form a new carrier gas biasing gradient curve；When using this system again, system will read superposition correction side-play amount
Numerical value corresponding to new carrier gas biasing gradient curve be assigned to carrier gas numerical value；Air total quantity reset gradient curve is also simultaneously
Synchronization is increased or decreased corresponding amount of bias, forms real gas total amount and carrier gas tolerance, it is not necessary to re-start adjustment operation,
Use convenience more.
As shown in Figure 3, carrier gas side-play amount is by forming new carrier gas linear gradient, then according to new carrier gas line
Property gradient adjust for the actual tolerance of powder gas, thus reach required powder output.As shown in Figure 3, when setting amount of powder
When being 75%, Systematic selection and display carrier gas value be 25%, operator according to powder delivery hose and spray gun practical situation, if
Putting new carrier gas is 45%, forms+20% new carrier gas biasing gradient curve a, then biases gradient curve according to carrier gas
A, adjusts new carrier gas tolerance, and during as being 60% for powder gas tolerance, new carrier gas tolerance should be 40%+20%, and real gas is total
Amount, for setting the 120% of gas gross, is also maintained at setting the 120% of gas gross, to the inverse ratio for powder gas with carrier gas simultaneously
Example adjusts, and i.e. sets gas gross=confession powder gas+carrier gas, real gas total amount=confession powder gas+carrier gas+carrier gas side-play amount,
Herein, involved percentage ratio is the percentage ratio relative to the gas gross set.
Intelligent air control method maintain original simple single control to adjust powder output and carrier gas from
Dynamic adjustment.But it brings greater flexibility to operator, because in the case of not affecting powder output, operator can essence
Diluent air amount needed for fine control, and the parameter of these optimizing regulation is by defeated for the powder that can be automatically applied to be used subsequently
Output.
The control method of this adjustment is simple, is easily understood by operator.Because powder output is shown that 0 ~
The usable range of 100%, rather than the setting value of the gas gross of 0 ~ 100%, and carrier gas control to be displayed as 0 too ~
The usable range of 100%.
When powder output changes when, intelligent air control system also maintains a given air velocity and powder
Later and decadent stage of a school of thought speed is come by powder delivery hose and spray gun.
One advantage of intelligent air control method is: carrier gas side-play amount can be used for down compensation difference
The powder delivery hose of diameter, in order to reach required air mass flow and rate of powder.
In current concrete application, carrier gas side-play amount may be adjusted to relative to typical set value maximum ± 40%
Scope, naturally it is also possible to be set in other a scope.
Carrier gas side-play amount can automatically reset to null value by a reset button or use reset routine to perform, also
Can arrange for powder gas and two values of carrier gas all for 50% with hand-reset, because their moving law is inversely proportional.
In this example is specifically applied, the supply for powder gas and carrier gas can pass through digital programmable electric-control system
Gas control valve is coordinated to control；Gas control valve can also be coordinated to control by simulation electric-control system；Machine can also be passed through
Tool device such as knob, gear etc. coordinate gas control valve to control.In a particular application, the regulation valve for powder gas and carrier gas can
The needle-valve driven by motor controls, but also can be controlled by automatically controlled proportional flow control valve.
Preferably enforcement to the present invention is illustrated above, and certainly, the present invention can also use and above-mentioned enforcement
The form that mode is different, those of ordinary skill in the art are in the conversion of the equivalent made on the premise of spirit of the present invention
Or change accordingly, all should belong in protection scope of the present invention.
Claims (4)
1. a venturi powder pump intelligent air control method, it is characterised in that: the confession powder gas of the venturi powder pump of original state
It is the setting value of a system intialization with the supply sum gas gross of carrier gas；Automatically two are used during system initial state
Inverse ratio gradient curve controls the supply of two-way air-flow, so that gas gross maintains a steady state value；When using for the first time, when
When being changed for powder gas supply, the inverse ratio gradient curve of the internal preset correspondence of carrier gas supply follow procedure transfers dilution
The value of gas supply；The supply of this carrier gas allows operator revised and change；After correction completes, system will be remembered automatically
The side-play amount of setting value in record setting numerical value and program, system forms a new carrier gas biasing gradient song according to this side-play amount
Line；When using this system again, system revises the new carrier gas biasing gradient curve pair of side-play amount by reading superposition
The numerical value answered is assigned to carrier gas numerical value；Air total quantity reset gradient curve also synchronizes corresponding biasing is increased or decreased simultaneously
Amount.
A kind of venturi powder pump intelligent air control method the most according to claim 1, it is characterised in that: for powder gas and dilute
The supply of outgassing coordinates gas control valve to control by digital programmable electric-control system.
A kind of venturi powder pump intelligent air control method the most according to claim 1, it is characterised in that: for powder gas and dilute
The supply of outgassing coordinates gas control valve to control by simulation electric-control system.
A kind of venturi powder pump intelligent air control method the most according to claim 1, it is characterised in that: for powder gas and dilute
The supply of outgassing coordinates gas control valve to control by machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649105.9A CN106111380B (en) | 2016-08-09 | 2016-08-09 | A kind of venturi powder pump intelligent air control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649105.9A CN106111380B (en) | 2016-08-09 | 2016-08-09 | A kind of venturi powder pump intelligent air control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106111380A true CN106111380A (en) | 2016-11-16 |
| CN106111380B CN106111380B (en) | 2018-11-16 |
Family
ID=57257663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649105.9A Active CN106111380B (en) | 2016-08-09 | 2016-08-09 | A kind of venturi powder pump intelligent air control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106111380B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103562A (en) * | 1986-04-18 | 1987-12-23 | 流体技术(澳大利亚)有限公司 | Fluid injection system |
| US5013499A (en) * | 1988-10-11 | 1991-05-07 | Sudamet, Ltd. | Method of flame spraying refractory material |
| CN1190911A (en) * | 1995-07-21 | 1998-08-19 | 美国3M公司 | Spraying system for single or multiple fluids |
| GB2329135B (en) * | 1997-08-26 | 1999-08-18 | Korea Atomic Energy Res | Apparatus for dispensing powder |
| US20110163183A1 (en) * | 2010-01-04 | 2011-07-07 | Chuan-Wei Ko | Powder sprayer |
| CN102713310A (en) * | 2009-11-24 | 2012-10-03 | J.施迈茨有限公司 | Compressed-air-operated vacuum generator or vacuum gripper |
-
2016
- 2016-08-09 CN CN201610649105.9A patent/CN106111380B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103562A (en) * | 1986-04-18 | 1987-12-23 | 流体技术(澳大利亚)有限公司 | Fluid injection system |
| US5013499A (en) * | 1988-10-11 | 1991-05-07 | Sudamet, Ltd. | Method of flame spraying refractory material |
| CN1190911A (en) * | 1995-07-21 | 1998-08-19 | 美国3M公司 | Spraying system for single or multiple fluids |
| GB2329135B (en) * | 1997-08-26 | 1999-08-18 | Korea Atomic Energy Res | Apparatus for dispensing powder |
| CN102713310A (en) * | 2009-11-24 | 2012-10-03 | J.施迈茨有限公司 | Compressed-air-operated vacuum generator or vacuum gripper |
| US20110163183A1 (en) * | 2010-01-04 | 2011-07-07 | Chuan-Wei Ko | Powder sprayer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106111380B (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106970634B (en) | Control management system and control method of intelligent plant protection unmanned aerial vehicle | |
| JP3426215B2 (en) | Powder spray coating equipment | |
| US20090179081A1 (en) | Spray Gun with Low Emissions Technology | |
| US4487367A (en) | Paint color change and flow control system | |
| US11491722B2 (en) | Apparatus for spray deposition | |
| US4738219A (en) | Coating apparatus | |
| WO1988004202A1 (en) | Powder spraying system | |
| CN107921467A (en) | Discharging liquid material device | |
| US10434630B2 (en) | Vapor abrasive blasting system with closed loop flow control | |
| CN105555414B (en) | Solid phase powder applying device and coating method | |
| CA2193192C (en) | Powder spray coating device | |
| CN106170346A (en) | Fluid pressure control method in the system closed | |
| CN104473325A (en) | Automatic gluing system for cigarette paper | |
| DE102007049169A1 (en) | Powder spray coating controller and its combination with a powder feeder or with a powder spray coater | |
| CN111889251A (en) | Spraying process parameter control system of high-speed railway automobile body | |
| JP2878199B2 (en) | Method and apparatus for transporting powdered stratified material by injector | |
| CN106111380A (en) | A kind of venturi powder pump intelligent air control method | |
| US20020129765A1 (en) | Coating-powder spray equipment | |
| JP2002523215A (en) | Powder spray coating equipment | |
| US6443670B1 (en) | Powder coating equipment having zero-sum control of conveyance and supplement air lines | |
| CN205495889U (en) | Automatic glue spraying device | |
| EP1243341A1 (en) | Automatic spray gun | |
| CN103526149B (en) | The method of plasma coating apparatus and plasma coating for matrix | |
| CN201150251Y (en) | Cigarette lap gumming device | |
| CN105852187A (en) | Flexible tobacco flavoring system, flavoring device and flexible tobacco flavoring control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |