CN102489422B - Liquid medicine spraying device based on diaphragm and electromagnetic exciter - Google Patents
Liquid medicine spraying device based on diaphragm and electromagnetic exciter Download PDFInfo
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- CN102489422B CN102489422B CN201110367491.XA CN201110367491A CN102489422B CN 102489422 B CN102489422 B CN 102489422B CN 201110367491 A CN201110367491 A CN 201110367491A CN 102489422 B CN102489422 B CN 102489422B
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- liquid medicine
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Abstract
The invention provides a liquid medicine spraying device based on a diaphragm and an electromagnetic exciter, which realizes linear spraying of single fog drips. Grain sizes of the sprayed fog drips are identical basically, deposition distribution of the liquid medicine spraying device is more uniform than that of a common liquid medicine spraying device, and a new means is provided for measuring fog drip deposition and movement states. The liquid medicine spraying device mainly consists of the diaphragm, the electromagnetic exciter and a spray nozzle, and a structural sketch of the liquid medicine spraying device is shown in a figure of instructions.
Description
Technical field
The present invention relates to, specifically provide a kind of liquid medicine ejection device based on barrier film and electromagnetic exciter.
Background technology
In agricultural and industry spraying cutting process, traditional liquid injection apparatus many employings hydraulic type and Pneumatic type, but the many drop dispersions of the liquid of such injection apparatus ejection, uniformity coefficient is low, characteristic for its each drop of drop of dispersion varies, particularly to coverage rate, the control of the agricultural pest that uniformity requirement is high cannot reach desirable requirement; Secondly in experimental study, common injection apparatus can only analyze the overall permanence of its droplet group, and the accurate description for single droplet characteristic and motion state cannot realize.On the surface of semiconductor wafer or glass substrate, make fine circuits figure by photo-mask process and etching work procedure.In photo-mask process, chemicals feeder is made to be coated on wafer or glass substrate by liquid medicine jets such as photoresists, if the size droplet diameter now sprayed is not of uniform size, liquid droplets has angle of scattering, then can cause fault and pattern defect, therefore propose the even injection that a kind of liquid medicine ejection device based on barrier film and electromagnetic exciter is droplet herein, the raising of coverage rate and the measurement of droplet characteristic provide foundation.
Summary of the invention
The object of the invention is to make to eject single linear pattern drop, spy provides a kind of liquid medicine ejection device based on barrier film and electromagnetic exciter.
Based on a liquid medicine ejection device for membrane pump and electromagnetic exciter, be made up of electromagnetic exciting structure and medical liquid spraying structure; Described electromagnetic exciting structure and medical liquid spraying structure are cast in aggregates, electromagnetic exciting structure comprises spring and the moving-coil of upper and lower two W shapes, the both ends of described two springs are fixed on the inwall of circular vibrator shell, connected by a cylindrical push rod in the middle part of two springs, the contact point place of push rod and two W shape springs arranges boss; Described moving-coil is made up of central magnetic pole and magnet exciting coil, moving-coil is in permanent magnet and is formed in high-intensity magnetic field, when passing to alternating current, moving-coil moves back and forth in magnetic field because being subject to continuous varying electromagnetic force, and on moving-coil, inertia force is applied to annular central magnetic pole inner hole sleeve on model passes through magnetic-adsorption on push rod by exciting rod; Described electromagnetic exciting structure and liquid medicine ejection device two operating room are separated by plastics or stainless steel, on the upside of separating, install rubber sealing boot additional; Described medical liquid spraying structure comprises spherical barrier film, constant force spring, nozzle conduit, nozzle, constant voltage backflow road and input duct; Described spherical barrier film is connected to ball push rod bottom by strength adhesive or rubber suction cups; Constant force spring sealing or unlatching medicine liquid outlet; The nozzle conduit of circular inner wall is connected with injection structure; Nozzle and nozzle conduit frictional connection; The input duct of circular inner wall structure is fixed on housing, and constant voltage backflow road adopts interference fit and strong adherence agent to be connected with input duct and nozzle conduit; Adopt the hydraulic control one-way valve of pyramidal structure in input duct, hydraulic control one-way valve is fixed on the right side that return duct end connects, and arranges the contrary hydraulic control one-way valve of identical pyramidal structure in constant voltage backflow road.Described constant force spring (6) shape is flat spring, flat spring glues one end and ties in cabinet shell inwall, the spring end of the other end unseal connects cone seal hole, spring and end part seal cone tank is sealed in the spring chute of medical liquid spraying structure end.The structure of barrier film 11 and cavity volume is determined according to the opening pressure of nozzle entrance port spring:
, F=PS; Wherein, P is for spraying hydraulic pressure, and the pressure that F bears for holding cavity bottom, S is cavity volume bottom area, and a is oval x-axis radius, and b is oval y-axis radius, and c is oval z-axis radius, and ρ is drop density, and g is acceleration of gravity, and d is nozzle outlet diameter.Barrier film often adopts nitrile rubber, neoprene, fluorubber, poly-inclined fluorubber, poly-four or six ethylene rubbers according to the chemical property sucking liquid, when being applied to agricultural plant protection, fluorubber selected by barrier film, and its function is produce elastic deformation at the incentive action lower diaphragm plate of electromagnetic exciter to generate single continuous droplet by extruding; Also comprise drive unit, this drive unit adopts excited frequency from the adjustable electromagnetic exciter of 1HZ-10KHZ, makes barrier film do the motion of regular compression-expansion.
Spherical barrier film is adopted in injection apparatus, its duty is produce distortion at the effect lower diaphragm plate of push rod, its deformation process is: push rod moves upward and the variable volume in sprayer body is increased under the promotion of electromagnetic exciter, poor with the inner mineralization pressure of feed tube, makes in liquid inhalation spray head body.
Barrier film in injection apparatus is in the downward promotion lower diaphragm plate surrounding of push rod and sprayer body inwall joint, and now barrier film lower liquid is extruded by nozzle conduit under the pressure effect of barrier film.The push rod promoting diaphragm movement adopts stainless steel.The hydraulic control one-way valve of one taper valve core is set in inlet, ensure that liquid is inhaled into when spraying with drop under pressure differential effect and close inlet.
Under normal temperature, jet nozzle's incidence angle is larger, and spraying spray angle is also larger, and for obtaining the single drop of linear pattern, nozzle conduit entrance adopts incidence angle to be 0 degree, and drop extrudes from jet hole under the effect of barrier film.The drop size that the feature of chemicals feeder of the present invention is sprayed by nozzle can reach 200um-1000um, and this device droplet size determines primarily of nozzle bore.
Advantage of the present invention: realize single droplet straight line and spray, identical excited frequency, and taper hydraulic control one-way valve and constant voltage backflow road make to ensure that the constant of rear nozzle pipeline pressure opened by spring in inlet, spraying droplet characteristic is substantially identical, deposition distribution comparatively common drug liquid jetting device is more even, also for the measurement of mist droplet deposition and motion state provides a kind of new means.
Accompanying drawing explanation
Fig. 1 is injection apparatus structure diagram.
Fig. 2 is backhaul atomizing of liquids operational diagram under injection apparatus.
Fig. 3 is backhaul imbibition operational diagram on injection apparatus.
Fig. 4 is spray head designs.
In figure, 1 spring, 2 moving-coils, 3 magnet exciting coils, 4 vibrator shells, 5 push rods, 6 constant force springs, 7 nozzle conduits, 8 nozzles, 9 constant voltage backflow road, 10 inlets, 11 barrier films, 12 central magnetic pole, 13 pole plate.
Detailed description of the invention
Be described further as follows by accompanying drawing 1,2,3 pairs of connecting structure of the present invention and working method:
Embodiment: the application of injection apparatus in agricultural spray
This chemicals feeder is made up of electromagnetic exciting structure and medical liquid spraying structure, and two parts casting is in aggregates, electromagnetic exciting structure comprises spring 1 and the moving-coil 2 of upper and lower two W shapes, the both ends of described two springs 1 are fixed on the inwall of circular vibrator shell 4, connected by a cylindrical push rod 5 in the middle part of two springs 1, the contact point place of push rod 5 and two W shape springs 1 arranges boss, ensure exciting precision, described moving-coil 2 is made up of central magnetic pole and magnet exciting coil, moving-coil is in permanent magnet and is formed in high-intensity magnetic field, when passing to alternating current, moving-coil moves back and forth in magnetic field because being subject to continuous varying electromagnetic force, on moving-coil, inertia force is applied on model by exciting rod, annular center magnetic pole 12 inner hole sleeve passes through magnetic-adsorption on push rod 5, described electromagnetic exciting structure and liquid medicine ejection device two operating room are separated by plastics or stainless steel, on the upside of separating, install rubber sealing boot additional, described spherical barrier film 11 is connected to ball push rod 5 bottom by strength adhesive or rubber suction cups, medicine liquid outlet sealing and unlatching adopt the constant force spring 6 of stainless steel structure, described constant force spring 6 shape is flat spring, flat spring glues one end and ties in cabinet shell inwall, the spring end of the other end unseal connects cone seal hole, is sealed in the spring chute of medical liquid spraying structure end by spring and end part seal cone tank, nozzle conduit 7 and injection structure connected mode are for casting entirety or being threaded, nozzle 8 structure as shown in Figure 4 with nozzle conduit frictional connection, the plastics input duct 10 of circular inner wall structure can adopt interference fit and strong adherence agent to be fixed on housing, and constant voltage backflow road 9 adopts interference fit and strong adherence agent to be connected with input duct 10 and nozzle conduit 7, the hydraulic control one-way valve of pyramidal structure is adopted in input duct 10, this hydraulic control one-way valve is fixed on the right side that constant voltage returns flow passage ends connection, the hydraulic control one-way valve of identical pyramidal structure is set in constant voltage backflow road 9, but check valve loads in pipeline by contrary direction, and ensure that backflow road 9 pressure is greater than the pressure of input duct 10, namely the check valve opening pressure in constant voltage backflow road is greater than check valve opening pressure in input duct 10, otherwise backflow voltage stabilizing pipeline lost efficacy.
Move up and down at electromagnetic exciter exciting effect lower push-rod 5, when lower backhaul push rod moves upward, the endoceliac variable volume of shower nozzle increases, and poor with feed tube 10 mineralization pressure, now one-way valve opens is by the liquid suction chamber of constant pressure; When upper backhaul push rod moves downward, extrude with shower nozzle cavity wall because barrier film is extruded distortion, avoid liquid to move to the top in chamber, liquid is made to be squeezed in the bottom in chamber, push rod continues effect downwards, when reaching bottom constant force spring opening pressure F, nozzle conduit 7 is opened, and this shower nozzle arranges constant voltage backflow road 9 to ensure the constant of shower nozzle inlet drop pressure to pipe place, require that pipeline 9 herb liquid pressure is more than or equal to the opening pressure of constant force spring 6.Move and so forth, the single droplet of continuous print can be squeezed out in the constant situation of operating pressure.
Its structural design is as follows:
1, under normal temperature, injection diameter is less, and it is less that water jet spray atomization forms diameter of particle;
2, along with shower nozzle draw ratio L/d diminishes, atomizing effect is better, and degree of crushing is better;
3, the incidence angle of shower nozzle is larger, the spray angle of spraying is also larger, and the less atomizing effect of incidence angle is better, and this agricultural spray example is intended to obtain continuous single droplet, requirement is not done for jet expansion liquid jet speed, wind can be adopted to send in actual agricultural spray application and droplet is evenly spread.
A: designs of nozzles figure and correlation formula:
From figure, a is the incidence angle of nozzle, and this structure adopts incidence angle a=0, L/d to be nozzle draw ratio, conventional 2-4; It is as follows that nozzle power output calculates formula:
Wherein:
P is for being injection hydraulic pressure, and the pressure of F for bearing for appearance cavity bottom, S is cavity volume bottom area, and a is oval x-axis radius, and b is oval y-axis radius, and the oval z-axis radius of c is, ρ is for being drop density, and g is acceleration of gravity, and d is nozzle outlet diameter.
B: the opening pressure of constant force spring
Adopt formula F=KX to calculate, wherein K is the stiffness coefficient (N/mm) of spring, and X is spring elongates
Or the length (mm) shortened, in this example, spring deflection is nozzle outlet diameter d.
C: barrier film volume calculations
Suppose that the final duty in backhaul operating room is spheroid under barrier film, if spheroid equation is:
wherein, the volume of spheroid is
, trying to achieve drop volume in chamber is thus v1=abc
1-
;
calculate the liquid quality of cavity volume bottom, the amount of spraying of this shower nozzle unit interval can be calculated accordingly.
The structure of barrier film 11 and cavity volume designs according to the opening pressure of nozzle entrance port spring
, F=PS, wherein F is for for holding the pressure that bears of cavity bottom, and when carrying out cavity volume and diaphragm design, the unlatching critical pressure that selection pressure F equals spring is as the design standard of cavity volume and barrier film, and S is cavity volume bottom area.
Claims (6)
1., based on a liquid medicine ejection device for membrane pump and electromagnetic exciter, it is characterized in that, be made up of electromagnetic exciting structure and medical liquid spraying structure;
Described electromagnetic exciting structure and medical liquid spraying structure are cast in aggregates, electromagnetic exciting structure comprises the spring (1) of moving-coil (2) and upper and lower two W shapes, the both ends of described two springs (1) are fixed on the inwall of circular vibrator shell (4), two spring (1) middle parts are connected by a cylindrical push rod (5), and push rod (5) arranges boss with the contact point place of two W shape springs (1); Described moving-coil (2) is made up of central magnetic pole (12) and magnet exciting coil (3), moving-coil (2) is in permanent magnet and is formed in high-intensity magnetic field, when passing to alternating current, moving-coil moves back and forth in magnetic field because being subject to continuous varying electromagnetic force, and annular center magnetic pole (12) inner hole sleeve passes through magnetic-adsorption on push rod (5); Described electromagnetic exciting structure and medical liquid spraying structure are separated by plastics or stainless steel, on the upside of separating, install rubber sealing boot additional;
Described medical liquid spraying structure comprises spherical barrier film (11), constant force spring (6), nozzle conduit (7), nozzle (8), constant voltage backflow road (9) and input duct (10); Described spherical barrier film (11) is connected to push rod (5) bottom by strength adhesive or rubber suction cups; Constant force spring (6) sealing or unlatching medicine liquid outlet; The nozzle conduit (7) of circular inner wall is connected with injection structure; Nozzle (8) and nozzle conduit (7) frictional connection; The input duct (10) of circular inner wall structure is fixed on housing, and constant voltage backflow road (9) adopts interference fit and strong adherence agent to be connected with input duct (10) and nozzle conduit (7); Adopt the hydraulic control one-way valve of pyramidal structure in input duct (10), hydraulic control one-way valve is fixed on the right side that constant voltage backflow road (9) end connects, and arranges the contrary hydraulic control one-way valve of identical pyramidal structure in constant voltage backflow road (9); Described constant force spring (6) shape is flat spring, flat spring one end is bonded in vibrator shell (4) inwall, unseal cone seal hole, the other end, the cone seal hole of flat spring and flat spring end part seal is sealed in the spring chute of medical liquid spraying structure end.
2. a kind of liquid medicine ejection device based on membrane pump and electromagnetic exciter according to claim 1, it is characterized in that, the structure of barrier film (11) and cavity volume is determined according to the opening pressure of constant force spring (6):
, F=PS;
Wherein, P is for spraying hydraulic pressure, and the pressure that F bears for holding cavity bottom, S is cavity volume bottom area, and a is oval x-axis radius, and b is oval y-axis radius, and c is oval z-axis radius, and ρ is drop density, and g is acceleration of gravity, and d is nozzle outlet diameter.
3. a kind of liquid medicine ejection device based on membrane pump and electromagnetic exciter according to claim 1 and 2, is characterized in that, described electromagnetic exciting structure adopts excited frequency adjustable from 1HZ-10KHZ, makes barrier film do the motion of regular compression-expansion.
4. a kind of liquid medicine ejection device based on membrane pump and electromagnetic exciter according to claim 1 and 2, is characterized in that, described barrier film adopts acrylonitrile-butadiene rubber, neoprene or fluorubber according to the chemical property sucking liquid.
5. a kind of liquid medicine ejection device based on membrane pump and electromagnetic exciter according to claim 1 and 2, it is characterized in that, described push rod (5) adopts stainless steel.
6. a kind of liquid medicine ejection device based on membrane pump and electromagnetic exciter according to claim 1 and 2, it is characterized in that, described nozzle conduit (7) and injection structure connected mode are for casting entirety or being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367491.XA CN102489422B (en) | 2011-11-18 | 2011-11-18 | Liquid medicine spraying device based on diaphragm and electromagnetic exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367491.XA CN102489422B (en) | 2011-11-18 | 2011-11-18 | Liquid medicine spraying device based on diaphragm and electromagnetic exciter |
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| CN102489422A CN102489422A (en) | 2012-06-13 |
| CN102489422B true CN102489422B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110367491.XA Active CN102489422B (en) | 2011-11-18 | 2011-11-18 | Liquid medicine spraying device based on diaphragm and electromagnetic exciter |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10077768B2 (en) * | 2014-05-05 | 2018-09-18 | Aavid Thermalloy, Llc | Planar coil and support for actuator of fluid mover |
| CN105032647B (en) * | 2015-06-17 | 2017-08-04 | 江苏大学 | A kind of electrostatic medical liquid spraying platform |
| CN107051768A (en) * | 2017-04-12 | 2017-08-18 | 江汉大学 | A kind of pressure balance type atomizer |
| CN108043629A (en) * | 2018-01-30 | 2018-05-18 | 浙江夏远信息技术有限公司 | A kind of environmental protection paint spraying apparatus |
| CN108043648B (en) * | 2018-01-30 | 2019-01-11 | 嘉兴敏惠汽车零部件有限公司 | A kind of environmental protection spray-painting plant |
| CN108043636A (en) * | 2018-01-30 | 2018-05-18 | 浙江夏远信息技术有限公司 | A kind of Environmental Safety spray-painting plant |
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| CN2217470Y (en) * | 1994-11-17 | 1996-01-17 | 东北电力学院自控技术开发公司 | Anti-blocked spray head |
| CN1231621A (en) * | 1996-07-26 | 1999-10-13 | 拜奥－多特公司 | Dispensing apparatus having improved dynamic range |
| CN101737314A (en) * | 2008-11-14 | 2010-06-16 | 沈阳芯源微电子设备有限公司 | Precise glue pump with high viscosity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738961B2 (en) * | 1991-10-14 | 1995-05-01 | 正之 平岡 | Fountain flow generator including polka dots |
| JPH10184553A (en) * | 1996-12-25 | 1998-07-14 | Gutsupii:Kk | Electromagnetic pump |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2217470Y (en) * | 1994-11-17 | 1996-01-17 | 东北电力学院自控技术开发公司 | Anti-blocked spray head |
| CN1231621A (en) * | 1996-07-26 | 1999-10-13 | 拜奥－多特公司 | Dispensing apparatus having improved dynamic range |
| CN101737314A (en) * | 2008-11-14 | 2010-06-16 | 沈阳芯源微电子设备有限公司 | Precise glue pump with high viscosity |
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| CN102489422A (en) | 2012-06-13 |
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