CN101634291A - Control system and control method for output liquid amount of pump - Google Patents
Control system and control method for output liquid amount of pump Download PDFInfo
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- CN101634291A CN101634291A CN200810041057A CN200810041057A CN101634291A CN 101634291 A CN101634291 A CN 101634291A CN 200810041057 A CN200810041057 A CN 200810041057A CN 200810041057 A CN200810041057 A CN 200810041057A CN 101634291 A CN101634291 A CN 101634291A
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- pump
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- liquid amount
- pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/04—Pressure in the outlet chamber
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a control system for output liquid amount of a pump, which comprises an actuating device, a variable space cavity, an input passage and an output passage. The control system also comprises a pressure sensor for detecting the output pressure of the pump, the pressure sensor transmits an output pressure value to a signal control device, and the signal control device controls the operation of the actuating device according to the output pressure value. Meanwhile, the invention also discloses a control method for the output liquid amount of the pump, which comprises the following steps: detecting the output pressure value of the pump, and controlling the operation of the actuating device of the pump according to the output pressure value so as to control the output liquid amount or the output pressure of the pump. The control system and the control method can precisely control the output liquid amount or the pressure of the pump.
Description
Technical field
The present invention relates to the micropump field, particularly relate to a kind of control system and controlling method of output liquid amount of pump.
Background technique
Consult Fig. 1, be the structural representation of existing piezoelectric ceramic pump, piezoelectric ceramic pump 10 comprises piezoelectric ceramic 11, variable space cavity 12, input channel 13, input one-way valve 14, output one-way valve 15, reaches output channel 16.Piezoelectric ceramic 11 is the multilayer disc, and its base material can be materials such as copper or stainless steel, is covered with one deck piezoceramic material on the base material, is covered with layer of conductive material above the piezoelectric constant again, as silver etc.Copper product and ag material connect the two poles of the earth of ac power supply respectively.After the energising, because the characteristic that piezoceramic material stretches in electric field, piezoelectric ceramic 11 will be followed alternating voltage to hocket and raise up and recessed downwards action.
See Fig. 2, when piezoelectric ceramic 11 raises up, the space of the variable space cavity 12 that is made of piezoelectric ceramic 11 and piezoelectric ceramic pump 10 housings becomes big, pressure in the variable space cavity 12 is diminished, the pressure of input channel 13 is greater than the pressure of variable space cavity 12, input one-way valve 14 is opened, and makes liquid from input channel 13, enters variable space cavity 12 through input one-way valve 14.When the pressure of variable space cavity 12 during, close output one-way valve 15 simultaneously, make liquid that can not blow back into variable space cavity 12 from output channel 16 less than the pressure of output channel 16.
See Fig. 3, when piezoelectric ceramic 11 is recessed downwards, the space of variable space cavity 12 diminishes, make the pressure in the variable space cavity 12 become big, when the pressure of variable space cavity 12 during greater than the pressure of output channel 16, output one-way valve 15 is opened, and liquid is from variable space cavity 12, through output one-way valve 15, arrival output channel 16.Simultaneously, when the pressure of variable space cavity 12 during, close input one-way valve 14 liquid that can not is flow backwards greater than the pressure of input channel 13.
Be applied to the magnitude of voltage and the conversion frequency at piezoelectric ceramic 11 the two poles of the earth and the duration of working by control, will control Oscillation Amplitude and the vibration frequency and the duration of piezoelectric ceramic 11, and then can control piezoelectric ceramic pump 10 output liquid amounts.
Because the output voltage values and the alternative frequency of ac power supply all are predefined, and piezoelectric ceramic pump 10 output liquid amounts are subjected to the influence of all many-sides such as input channel 13 inlet pressures, output channel 16 outlet pressures, piezoelectric ceramic 11 conversion efficiencys, only with predefined delivery pressure value and alternative frequency, be difficult to piezoelectric ceramic pump 10 output liquid amounts are accurately controlled, also be difficult to the delivery pressure of piezoelectric ceramic pump 10 is accurately controlled
Summary of the invention
Technical problem to be solved by this invention provides a kind of control system of output liquid amount of pump, and this system can accurately control the output liquid amount or the delivery pressure of pump.
Another purpose of the present invention provides a kind of controlling method of output liquid amount of pump, and this method can accurately be controlled the output liquid amount or the delivery pressure of pump.
The present invention has introduced a kind of controlling method of output liquid amount of pump, comprising: the delivery pressure value that detects described pump; Control the actuator action of described pump according to described delivery pressure value, and then control output liquid amount, output flow velocity or the delivery pressure of described pump.
Preferably, the actuator action of controlling described pump according to described delivery pressure value is specially: the output liquid amount that calculates described force value correspondence; Judge whether above-mentioned output liquid amount reaches predefined value,, adjust and output to the magnitude of voltage on the actuator on the described pump, control described actuator action as not.
Preferably, the actuator action of controlling described pump according to described delivery pressure value is specially: the output liquid amount that calculates described force value correspondence; Judge whether above-mentioned output liquid amount reaches predefined value,, adjust and output to frequency on the actuator or time of movement on the described pump, control described actuator action as not.
The present invention also discloses a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, also comprise: the pressure transducer that detects the delivery pressure of described pump, described pressure transducer transmits the delivery pressure value to signal control device, and described signal control device is controlled described actuator action according to described delivery pressure value.
Preferably, described pressure transducer is arranged in the described output channel.
Preferably, also comprise the protection cavity that is communicated with described output channel, described pressure transducer is arranged in the described protection cavity.
Preferably, establish a barrier film in the described protection cavity, described protection cavity is isolated into enclosed space.
Preferably, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described data processing system is controlled the magnitude of voltage that described high-pressure generator generates according to the delivery pressure value, described high-pressure generator is sent to described high pressure distributor with this magnitude of voltage, and described high pressure distributor outputs to described actuator after with this voltage transitions.
Preferably, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described high pressure distributor receives the voltage that described high-pressure generator transmits, and described data processing system is controlled generating positive and negative voltage and the conversion times that described high pressure distributor is distributed to described actuator according to the delivery pressure value.
Preferably, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described data processing system is controlled the voltage that described high-pressure generator generates according to the delivery pressure value, described high-pressure generator is sent to described high pressure distributor with formation voltage, and the described high pressure distributor of described data processor controlled is distributed to voltage, frequency and/or the duration of described actuator.
Preferably, an input one-way valve is set on described input channel.
Preferably, described input one-way valve comprises first valve block and the first water conservancy diversion dunnage, and described first valve block is attached to the liquid feeding side of the described first water conservancy diversion dunnage.
Preferably, the described first water conservancy diversion dunnage is porous web plate, turriform spring or disc spring.
Preferably, an output one-way valve is set on described output channel.
Preferably, described output one-way valve comprises second valve block and the second water conservancy diversion dunnage, and described second valve block is attached to the liquid feeding side of the described second water conservancy diversion dunnage.
Preferably, the described second water conservancy diversion dunnage is porous web plate, turriform spring or disc spring.
Preferably, described actuator is a piezoelectric ceramic.
Preferably, described barrier film is an elastic diaphragm.
Preferably, described actuator is a magnetostriction equipment, and described magnetostriction equipment comprises magnetostriction materials and coil, and described coil is wrapped in described magnetostriction materials periphery, and described magnetostriction materials below is fixed with thin slice.
Preferably, described actuator is the strap cam motor, and described strap cam motor comprises cam and motor, and described cam connects the actuator of described motor, and described cam below is fixed with thin slice.
Preferably, described actuator is an electromagnet, and described electromagnet comprises electrician's soft iron and coil, and described coil is wrapped in described electrician's soft iron periphery, and described electrician's soft iron below is fixed with thin slice.
Preferably, described pump is used for insulin syringe.
The present invention also discloses a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, also comprise: the flow transducer that detects described pump output liquid amount, described flow transducer transmits the output liquid amount value to signal control device, and described signal control device is controlled described actuator action according to described output liquid amount value.
The present invention also discloses a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, also comprise: the flow transducer that detects described pump output flow velocity, described flow transducer transmits output flow velocity value to signal control device, and described signal control device is controlled described actuator action according to described output flow velocity value.
The present invention adds pressure transducer in the fluid position of pump, the delivery pressure of this pressure transducer testing pump, and according to actuator action in this delivery pressure value adjusting pump, and then the output liquid amount of control pump, realize accurate control to the pump output liquid amount.
Description of drawings
Fig. 1 is the structural representation of existing piezoelectric ceramic pump;
Working procedure schematic representation when Fig. 2 is a piezoelectric ceramic pump feed liquor shown in Figure 1;
Working procedure schematic representation when Fig. 3 is a piezoelectric ceramic pump fluid shown in Figure 1;
Fig. 4 is the corresponding curve of pump output liquid amount of the present invention and delivery pressure;
Fig. 5 is the control system schematic representation of the output liquid amount of first embodiment of the invention pump;
Fig. 6 is the control system schematic representation of the output liquid amount of second embodiment of the invention pump;
Fig. 7 is the control system schematic representation of the output liquid amount of third embodiment of the invention pump;
Fig. 8 is provided with position view for pressure transducer of the present invention;
Fig. 9 is provided with position view for pressure transducer of the present invention;
Figure 10 adopts the pump structure schematic representation of magnetostriction equipment for actuator of the present invention;
Figure 11 adopts the pump structure schematic representation of electromagnet for actuator of the present invention;
Figure 12 adopts the pump structure schematic representation of strap cam motor for actuator of the present invention;
Figure 13 imports the pump structure schematic representation of one-way valve and output one-way valve employing floating valve for the present invention;
Figure 14 is the controlling method flow chart of the output liquid amount of pump of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention adds pressure transducer in the fluid position of pump, the delivery pressure of this pressure transducer testing pump, and according to actuator action in this delivery pressure value adjusting pump, and then the output liquid amount of control pump or delivery pressure, realize accurate control to pump output liquid amount or delivery pressure.
In like manner, the present invention also can add flow transducer in the fluid position of pump, the output liquid amount of this flow transducer testing pump, and according to actuator action in this output liquid amount control pump, and then the output liquid amount of adjusting pump, realize accurate control to the pump output liquid amount.
The present invention also can add flow transducer in the fluid position of pump, the output flow velocity of this flow transducer testing pump, and according to actuator action in this output flow velocity value control pump, and then the output liquid amount of adjusting pump, realize accurate control to the pump output liquid amount.
Certainly, the present invention is not only applicable to the pump that output medium is a liquid, is applicable to that also output medium is the pump of gas.The control system of the output liquid amount of pump of the present invention and controlling method can be widely used in liquid conveying devices such as insulin syringe, and all gases feedway.
Consult Fig. 4, be the delivery pressure of pump and the graph of a relation of output liquid amount, its abscissa is a force value, y coordinate is the time, by curve among Fig. 4 as can be known, and when the voltage that is added in the piezoelectric constant two ends and frequency are constant, export equal liquid measure, delivery pressure is big more, and the required time is many more.The present invention regulates the voltage that is applied to actuator in the pump by the delivery pressure value of testing pump according to this delivery pressure value, changes the movement range of actuator, realizes the accurate control to the output liquid amount of pump.
Consult Fig. 5, the output liquid amount control system of pump comprises pump 10, pressure transducer 30, reaches signal control device 60, and wherein, pump 10 comprises actuator 17, and signal control device 60 comprises data processing system 61, high-pressure generator 62, reaches high pressure distributor 63.
The magnitude of voltage that high-pressure generator 62 is adjusted generation is sent to high pressure distributor 63 to the magnitude of voltage that requires with adjusted voltage.
The present invention regulates the magnitude of voltage that is applied to pump 10 by the delivery pressure value of testing pump 10, the output liquid amount of control pump 10, the feedback control system of a closed loop of formation.This system realizes the accurate control to the output liquid amount or the delivery pressure of pump 10 by continuous feedback regulation.
The present invention also can regulate the operating frequency and the duration of high pressure distributor 63 according to the delivery pressure value, is applied to actuator 17, realizes the accurate control to pump 10 output liquid amounts.Consult Fig. 6, data processing system 61 receives the delivery pressure value that pressure transducer 30 transmits, calculate the time of movement that under this pressure, need distribute to actuator 17 according to this delivery pressure value, this time of movement can be realized with the product of frequency and duration, also can determine frequency earlier, calculate the commutation number of times of high pressure distributor again, with the commutation number of times as the time of movement of distributing to actuator 17, finish control, to realize accurate control to output liquid amount to actuator 17.
In the working procedure of pump 10, the pressure of output liquid may change, and this moment, data processing system 61 was adjusted high pressure distributor 63 in real time, to reach the accurate control to pump 10 output liquid amounts by the real-time detection of pressure transducer 30.
The present invention also can regulate high-pressure generator 62 and high pressure distributor 63 simultaneously according to the delivery pressure value, to realize the accurate control to pump 10 output liquid amounts.Consult Fig. 7, data processing system 61 receives the delivery pressure value that pressure transducer 30 transmits, calculate the magnitude of voltage that high-pressure generator 62 needs generation according to this delivery pressure value, and high pressure distributor 63 need be distributed to the frequency of actuator 17, and action duration or time of movement, and result of calculation is sent to high-pressure generator 62 and high pressure distributor 63 respectively.High-pressure generator 62 sends correspondent voltage to high pressure distributor 63, high pressure distributor 63 becomes required alternating voltage with this voltage transformation, be applied on the actuator 17, and the duration or the number of alternations of control alternating voltage, to realize accurate control to the output liquid amount or the delivery pressure of pump 10.
In a word, data processing system 61 of the present invention fully can be according to the output liquid amount of delivery pressure value calculating pump 10, regulate the output voltage of high-pressure generator 62 according to this output liquid amount, or adjusting high pressure distributor 63 is distributed to the alternation state of the voltage of actuator 17, or regulate the output voltage of high-pressure generator 62 and voltage and the alternation state that high pressure distributor 63 is distributed to actuator 17 simultaneously, realize accurate control to the output liquid amount of pump 10.
If the field-replaceable unit at pump 10 places needs its work Cumulative time of record separately, storage is placed on the parking space that cumulative data also can be provided in the pump 10.Certainly storage can be deposited all data relevant with pump 10.
Be the better delivery pressure value of testing pump 10, pressure transducer 30 can be arranged on the output channel of pump 10, or in the protection cavity that is connected with output channel.
Consult Fig. 8, piezoelectric ceramic pump 20 comprises piezoelectric ceramic 21, variable space cavity 22, input channel 23, input one-way valve 24, output one-way valve 25, output channel 26, pressure transducer 30 and storage 31.Piezoelectric ceramic 21 closely covers the top of variable space cavity 22.Piezoelectric ceramic 21 will be followed Ac to hocket and raise up and recessed downwards action.Variable space cavity 22 is a less relatively space, is piezoelectric ceramic pump 10 housings all around, and the top uses piezoelectric ceramic 21 airtight, and the below is connected input one-way valve 24 and output one-way valve 25 respectively by two passages.Input one-way valve 24 belows connect input channel 23, and output one-way valve 25 belows connect output channel 26.Pressure transducer 30 is arranged in the output channel 26.
When piezoelectric ceramic pump 20 is started working, promote liquid outside output channel 26 efflux pumps, when liquid flowed out, through pressure transducer 30, pressure transducer 30 just can accurately detect the pressure of liquid output, as the delivery pressure value of piezoelectric ceramic pump 20.Be placed on together with pressure transducer 30 and deposit the delivery pressure of this pump and the table of comparisons of flow with storage 31 in the pump.According to the table of comparisons, can know exactly under present delivery pressure, the flow of pump and flow velocity, the running parameter that also just can adjust pump meets the requirements of flow velocity or working pressure.
Consult Fig. 9; on protection cavity 28, add barrier film 281; to protect cavity 28 to be isolated into enclosed space, prevent liquid corrosion pressure transducer 30 and storage 31, and can prevent that also liquid contact pressure sensor 30 and storage 31 and their welding consumables from being polluted simultaneously.This moment, barrier film 281 should be relaxed to the additional deformation power that do not produce.
Consult Figure 10, magnetostriction equipment 31 comprises magnetostriction materials 311 and coil 312, and coil 312 is wrapped in the periphery of magnetostriction materials 311, and magnetostriction materials 311 belows are fixed with thin slice 313.Coil 312 connects ac power supply, when coil 312 works on power, produces magnetic field, and magnetostriction materials 311 drive thin slice 313 knee-actions because of fore and aft motion about the action of a magnetic field, thereby changes the volume of variable space cavity 22.
Consult Figure 11, electromagnet 41 comprises electrician's soft iron 411 and coil 412, and this moment, loam cake can be a permanent magnet.Coil 412 be wrapped in electrician's soft iron 411 around, electrician's soft iron 411 belows are fixed with thin slice 413.Coil 412 connects ac power supply, when coil 412 works on power, produces magnetic field, and electrician's soft iron 411 produces suction and thrust and moves up and down under the action of a magnetic field and between the permanent magnet, drive thin slice 413 knee-actions, thus the volume of change variable space cavity 22.
Change the magnitude of voltage or the frequency that are applied on the coil 412, can change amplitude or frequency that electrician's soft iron 411 moves up and down, and then change the pressure and the speed of liquid output in the pump 10, realize control pump 10 output liquid amounts.
Consult Figure 12, strap cam motor 51 comprises motor 511 and cam 512, and cam 512 belows are fixed with thin slice 513.Motor 511 connects power supply, when motor 511 works on power, cam 512 is moved up and down, and drives thin slice 513 knee-actions, thereby changes the volume of variable space cavity 22.
Change the magnitude of voltage or the electric voltage frequency that are applied on the motor 511, can change dynamics or frequency that cam 512 moves up and down, and then change the pressure and the speed of liquid output in the pump 10, realize control pump 10 output liquid amounts.
The input one-way valve 24 of pump 10 of the present invention and output one-way valve 25 all can adopt a kind of unsteady valve block to add the float valve of water conservancy diversion supporting plate structure.Consult Figure 13, input one-way valve 24 comprises the first water conservancy diversion dunnage 241 and first valve block, 242, the first valve blocks 242 below attached to the first water conservancy diversion dunnage 241.The first water conservancy diversion dunnage 241 can be porous web plate, turriform spring or disc spring.
Output one-way valve 25 comprises the second water conservancy diversion dunnage 251 and second valve block, 252, the second valve blocks 252 top attached to the second water conservancy diversion dunnage 251.The second water conservancy diversion dunnage 251 can be porous web plate, turriform spring or disc spring.
Based on the control system of the output liquid amount of said pump, the present invention also provides a kind of controlling method of output liquid amount of pump.Concrete steps are consulted Figure 14.
Step S141, data processing system carry out initialization to internal processes, detect whether receive the finish command, and in this way, end operation as not, forwards step S142 to.
Step S142, data processing system obtain the current delivery pressure value of pump by pressure transducer.
Step S143, data processing system judge whether to regulate according to the delivery pressure value, in this way, further judge whether to meet the requirements of force value, as reach, and stop action, return step S141; As not reaching, forward step S146 to, as not, forward step S144 to.
Step S144, data processing system judge whether to regulate according to the output medium flow velocity, in this way, further judge whether to meet the requirements of flow speed value, as reach, and keep action, return step S141; As not reaching, forward step S146 to, as not, forward step S145 to.
Step S145, data processing system judge whether to regulate according to the output medium flow, in this way, further judge whether to meet the requirements of flow value, as reach, end operation; As not reaching, forward step S146 to, as denying end operation.
Step S146, data processing system are judged magnitude of voltage or the frequency that needs adjusting.
Step S147, data processing system are tabled look-up and needing to be obtained the voltage or the frequency quantity of correction.
Step S148, data processing system are regulated high-pressure generator or distributor.
More than to the control system and the controlling method of the output liquid amount of a kind of pump provided by the present invention, be described in detail, used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (24)
1, a kind of controlling method of output liquid amount of pump is characterized in that, comprising:
Detect the delivery pressure value of described pump;
Control the actuator action of described pump according to described delivery pressure value, and then control output liquid amount, output flow velocity or the delivery pressure of described pump.
2, the method for claim 1 is characterized in that, the actuator action of controlling described pump according to described delivery pressure value is specially:
Calculate the output liquid amount of described force value correspondence;
Judge whether above-mentioned output liquid amount reaches predefined value,, adjust and output to the magnitude of voltage on the actuator on the described pump, control described actuator action as not.
3, the method for claim 1 is characterized in that, the actuator action of controlling described pump according to described delivery pressure value is specially:
Calculate the output liquid amount of described force value correspondence;
Judge whether above-mentioned output liquid amount reaches predefined value,, adjust and output to frequency on the actuator or time of movement on the described pump, control described actuator action as not.
4, a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, it is characterized in that, also comprise: the pressure transducer that detects the delivery pressure of described pump, described pressure transducer transmits the delivery pressure value to signal control device, and described signal control device is controlled described actuator action according to described delivery pressure value.
5, pump as claimed in claim 4 is characterized in that, described pressure transducer is arranged in the described output channel.
6, pump as claimed in claim 4 is characterized in that, also comprises the protection cavity that is communicated with described output channel, and described pressure transducer is arranged in the described protection cavity.
7, pump as claimed in claim 6 is characterized in that, establishes a barrier film in the described protection cavity, and described protection cavity is isolated into enclosed space.
8, pump as claimed in claim 4, it is characterized in that, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described data processing system is controlled the magnitude of voltage that described high-pressure generator generates according to the delivery pressure value, described high-pressure generator is sent to described high pressure distributor with this magnitude of voltage, and described high pressure distributor outputs to described actuator after with this voltage transitions.
9, pump as claimed in claim 4, it is characterized in that, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described high pressure distributor receives the voltage that described high-pressure generator transmits, and described data processing system is controlled generating positive and negative voltage and the conversion times that described high pressure distributor is distributed to described actuator according to the delivery pressure value.
10, pump as claimed in claim 4, it is characterized in that, described signal control device comprises data processing system, high-pressure generator and high pressure distributor, described data processing system is controlled the voltage that described high-pressure generator generates according to the delivery pressure value, described high-pressure generator is sent to described high pressure distributor with formation voltage, and the described high pressure distributor of described data processor controlled is distributed to voltage, frequency and/or the duration of described actuator.
11, pump as claimed in claim 4 is characterized in that, an input one-way valve is set on described input channel.
12, pump as claimed in claim 11 is characterized in that, described input one-way valve comprises first valve block and the first water conservancy diversion dunnage, and described first valve block is attached to the liquid feeding side of the described first water conservancy diversion dunnage.
13, pump as claimed in claim 12 is characterized in that, the described first water conservancy diversion dunnage is porous web plate, turriform spring or disc spring.
14, pump as claimed in claim 4 is characterized in that, an output one-way valve is set on described output channel.
15, pump as claimed in claim 14 is characterized in that, described output one-way valve comprises second valve block and the second water conservancy diversion dunnage, and described second valve block is attached to the liquid feeding side of the described second water conservancy diversion dunnage.
16, pump as claimed in claim 15 is characterized in that, the described second water conservancy diversion dunnage is porous web plate, turriform spring or disc spring.
As each described pump of claim 4 to 16, it is characterized in that 17, described actuator is a piezoelectric ceramic.
As each described pump of claim 4 to 16, it is characterized in that 18, described barrier film is an elastic diaphragm.
19, as each described pump of claim 4 to 16, it is characterized in that described actuator is a magnetostriction equipment, described magnetostriction equipment comprises magnetostriction materials and coil, described coil is wrapped in described magnetostriction materials periphery, and described magnetostriction materials below is fixed with thin slice.
As each described pump of claim 4 to 16, it is characterized in that 20, described actuator is the strap cam motor, described strap cam motor comprises cam and motor, and described cam connects the actuator of described motor, and described cam below is fixed with thin slice.
21, as each described pump of claim 4 to 16, it is characterized in that described actuator is an electromagnet, described electromagnet comprises electrician's soft iron and coil, and described coil is wrapped in described electrician's soft iron periphery, and described electrician's soft iron below is fixed with thin slice.
22, as each described pump of claim 4 to 16, it is characterized in that described pump is used for insulin syringe.
23, a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, it is characterized in that, also comprise: the flow transducer that detects described pump output liquid amount, described flow transducer transmits the output liquid amount value to signal control device, and described signal control device is controlled described actuator action according to described output liquid amount value.
24, a kind of control system of output liquid amount of pump, comprise actuator, variable space cavity, input channel and output channel, it is characterized in that, also comprise: the flow transducer that detects described pump output flow velocity, described flow transducer transmits output flow velocity value to signal control device, and described signal control device is controlled described actuator action according to described output flow velocity value.
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| CN200810041057A CN101634291A (en) | 2008-07-23 | 2008-07-23 | Control system and control method for output liquid amount of pump |
| PCT/CN2009/072619 WO2010009649A1 (en) | 2008-07-23 | 2009-07-03 | Control system and control method for output discharge of pump |
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| CN200810041057A CN101634291A (en) | 2008-07-23 | 2008-07-23 | Control system and control method for output liquid amount of pump |
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| CN101634291A true CN101634291A (en) | 2010-01-27 |
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