CN108457845A - Intelligent peristaltic pump - Google Patents

Intelligent peristaltic pump Download PDF

Info

Publication number
CN108457845A
CN108457845A CN201810281606.5A CN201810281606A CN108457845A CN 108457845 A CN108457845 A CN 108457845A CN 201810281606 A CN201810281606 A CN 201810281606A CN 108457845 A CN108457845 A CN 108457845A
Authority
CN
China
Prior art keywords
module
peristaltic pump
pump
operation control
pressure
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.)
Pending
Application number
CN201810281606.5A
Other languages
Chinese (zh)
Inventor
王永明
杨安林
佟大根
王全顺
裴丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Han Zhong Kun (shanghai) Control System Co Ltd
Original Assignee
Han Zhong Kun (shanghai) Control System Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Han Zhong Kun (shanghai) Control System Co Ltd filed Critical Han Zhong Kun (shanghai) Control System Co Ltd
Priority to CN201810281606.5A priority Critical patent/CN108457845A/en
Publication of CN108457845A publication Critical patent/CN108457845A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/08Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09Pumps having electric drive
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/12Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1261Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing the rollers being placed at the outside of the tubular flexible member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06Control using electricity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention discloses a kind of intelligent peristaltic pumps, including the pump housing and control device, the pump housing includes sequentially connected pump head, speed reducer and driving motor, the pump head is equipped with medium inlet and media outlet, and temperature sensor is equipped at the medium inlet, is equipped with pressure sensor at the media outlet;The control device includes data acquisition module, human-computer interaction module and operation control module, the data acquisition module, human-computer interaction module are separately connected the operation control module, and the driving motor, temperature sensor, pressure sensor are separately connected the data acquisition module.The present invention considers influence of the rotating speed to hose life of medium temperature, pressure and pump, forms the prediction to hose life, and warning information can be sent out before hose breakage, and user is reminded to replace hose, reduces dielectric loss, mitigates the influence to environment.

Description

Intelligent peristaltic pump
Technical field
The present invention relates to fluid media (medium)s to convey pump technical field, and in particular to a kind of intelligence peristaltic pump.
Background technology
There is no stringent differentiation between peristaltic pump and peristaltic pump, it is however generally that, the flow of peristaltic pump is small, outlet pressure is low, It is chiefly used in health field and laboratory metering;The flow of peristaltic pump is big, output pressure is high, is chiefly used in the conveying of industrial occasions big flow And metering.There is peristaltic pump the ability of conveying strong corrosive media and abrasiveness medium, its valveless uniquely to be connect without sealing, with medium Tactile component is rubber hose, compared to traditional screw pump, diaphragm pump, has the spies such as No leakage, few easy workout part, easy care Point.Peristaltic pump is more and more widely used in industries such as mining, food processing, chemical industry, ceramics, water process.
Hose is that uniquely the component with media contact, hose have certain life cycle as vulnerable part in peristaltic pump, It needs to regularly replace.The temperature and pressure etc. for the number, medium that the service life of hose is directly rolled with the rotating speed of peristaltic pump, hose Applying working condition is related, and the effective time of hose can not be often counted in industrial production, until hose breakage, it is found that medium is let out Hose is just replaced after dew, and the medium of peristaltic pump conveying generally has corrosivity, the work to the pump chamber and peristaltic pump of peristaltic pump Environment can cause undesirable influence.
Invention content
Technical problem to be solved by the invention is to provide a kind of intelligent peristaltic pumps, it can solve intelligence in the prior art The problem of peristaltic pump can not accurately calculate the service life of hose, and hose is replaced not in time.
To solve the above-mentioned problems, the present invention uses following technical scheme:
The present invention provides a kind of intelligent peristaltic pump, including the pump housing and control device, the pump housing include sequentially connected pump head, subtract Fast machine and driving motor, the pump head are equipped with medium inlet and media outlet, be equipped at the medium inlet temperature sensor, Pressure sensor is equipped at the media outlet;The control device includes data acquisition module, human-computer interaction module and operation Control module, the data acquisition module, human-computer interaction module are separately connected the operation control module, the driving motor, Temperature sensor, pressure sensor are separately connected the data acquisition module.
The pump housing is internally provided with infusion tube, turntable, pressure shoes as a preferred technical solution, and the turntable is circle Dish type, the pressure shoes are 2 and are symmetrical arranged along the circumferential direction of the turntable that the turntable connects driving motor.
When hose pump work, turntable rotation, to drive pressure shoes to rotate, pressure shoes is rotated along infusion tube, pressure shoes and pump The extruding force generated between shell flattens sebific duct, and under the effect of infusion tube natural resiliency, by restoring to the original state, the vacuum generated is inhaled Enter liquid, liquid is discharged under the mechanical presses of pressure shoes out of pipe, and reciprocation cycle realization quantitatively conveys liquid.
The operation control module includes storage unit, arithmetic element, comparison unit and defeated as a preferred technical solution, Go out unit, the storage unit, comparison unit, output unit are all connected with the arithmetic element.
Storage unit is used for pre-stored data, and arithmetic element carries out operation to the operation mode according to setting of input, compares Unit compares the data of operation with pre-stored data, and output unit exports the data after arithmetic element operation.
The control device further includes frequency-variable module as a preferred technical solution, and the frequency-variable module connects the drive Dynamic motor and operation control module.
Frequency-variable module is for realizing the rotating forward, reversion and frequency control of driving motor, the adjusting to realization to flow.
The human-computer interaction module includes liquid crystal display and control panel, the liquid crystal as a preferred technical solution, Display screen, the control panel connect the operation control module.
The control to the real-time traffic control of peristaltic pump and scene to pump is realized by human-computer interaction module.
The human-computer interaction module further includes fingerprint input screen as a preferred technical solution, and the fingerprint input screen connects Connect the operation control module.
Ensure that equipment is not operated by the people of not permission by fingerprint input screen, ensures the safe to use of equipment.
The control device further includes alarm as a preferred technical solution, and the alarm connects the operation control Molding block.
When the outlet pressure of peristaltic pump is greater than the set value or medium temperature is greater than the set value, alarm output alarm Signal, and operation control module stops driving motor work, ensures the operational safety of equipment.
Further include holder as a preferred technical solution, the pump housing is set on the holder, and the control device is set It is placed on the driving motor.
The pump housing and control device may be contained on holder, be convenient for the movement of equipment.
The intelligent peristaltic pump of the present invention has the advantages that:
(1)It is compact-sized, small by the way that modules are integrated in control device, realize flow, pressure and temperature etc. The real-time display of status data.
(2)By the COMPREHENSIVE CALCULATING to pressure medium, temperature and driving motor rotating speed, the service life of delivery hose is predicted, Peristaltic pump is set to be in controllable state.
(3)By data analysis and statistics, for the O&M of peristaltic pump, after-sale service, device upgrade, fault pre-alarming etc. Strong data supporting is provided.
Description of the drawings
Invention is further described in detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of the intelligent peristaltic pump of the present invention;
Fig. 2 is the internal structure schematic diagram of the intelligent peristaltic pump middle pump body of the present invention;
Fig. 3 is the structural schematic diagram of control device in the intelligent peristaltic pump of the present invention.
Wherein, reference numeral is described as follows:Holder 1, pump head 2, speed reducer 3, driving motor 4, control device 5, liquid Crystal display screen 6, control panel 7, fingerprint input screen 8, medium inlet 9, media outlet 10, temperature sensor 11, pressure sensor 12, operation control module 13, arithmetic element 14, storage unit 15, comparison unit 16, output unit 17, frequency-variable module 18, data Acquisition module 19, alarm 20, pressure shoes 21, turntable 22, infusion tube 23.
Specific implementation mode
As shown in Figure 1, a kind of intelligence peristaltic pump, including the pump housing and control device 5, the pump housing are arranged in rack, control dress 5 are set to be set on the pump housing.The pump housing includes sequentially connected pump head 2, speed reducer 3 and driving motor 4, and medium is provided on pump head 2 Entrance 9 and media outlet 10 are equipped with temperature sensor 11 at medium inlet 9, pressure sensor 12 are equipped at media outlet 10.
As shown in Fig. 2, the pump housing is internally provided with infusion tube 23, turntable 22, pressure shoes 21, turntable 22 is disc, pressure shoes 21 are symmetrical arranged for 2 and along the circumferential direction of turntable 22, and turntable 22 connects driving motor 4.When 23 hose pump work of infusion tube, turn Disk 22 rotates, and to drive pressure shoes 21 to rotate, pressure shoes 21 is rotated along infusion tube 23, and what is generated between pressure shoes 21 and pump case squeezes Pressure flattens sebific duct, and under the effect of 23 natural resiliency of infusion tube, by the vacuum suck liquid generated that restores to the original state, liquid exists It is discharged out of pipe under the mechanical presses of pressure shoes 21, reciprocation cycle realization quantitatively conveys liquid.
As shown in figure 3, control device 5 includes data acquisition module 19, human-computer interaction module, frequency-variable module 18, alarm 20 and operation control module 13.Operation control module 13 includes that storage unit 15, arithmetic element 14, comparison unit 16 and output are single Member 17, wherein storage unit 15, arithmetic element 14, output unit 17 are separately connected arithmetic element 14.Human-computer interaction module includes Liquid crystal display 6, control panel 7 and fingerprint input screen 8, liquid crystal display 6 connect output unit 17, the connection fortune of control panel 7 Unit 14 is calculated, fingerprint input screen 8 connects comparison unit 16.Data acquisition module 19 connects arithmetic element 14, driving motor 4, temperature Spend sensor 11 and pressure sensor 12.Frequency-variable module 18 connects output unit 17 and driving motor 4.The connection output of alarm 20 Unit 17.
The operation principle that 5 service life of control device reminds is as follows:
(1)Set presupposed information:In the present embodiment, the service life for presetting peristaltic pump is 2000h, is inputted by control panel 7 Setting value, setting value are stored in storage unit 15.
(2)Calculate the effective time:Temperature coefficient is J, pressure coefficient K, rotating speed coefficient are I, overall coefficient Q=J*K* I, the duration of runs T ' * overall coefficients Q of effective time T=peristaltic pump of peristaltic pump.
In the present embodiment, when liquid medium temperature be 5-10 DEG C, J=0.8, when liquid medium temperature be 10-15 DEG C, J= 0.85, when liquid medium temperature is 15-20 DEG C, J=0.9, when liquid medium temperature is 20-25 DEG C, liquid medium is worked as in J=0.95 Temperature be 25-30 DEG C, J=1, when liquid medium temperature be 30-35 DEG C, J=1.05, when liquid medium temperature be 35-40 DEG C, J=1.1, when liquid medium temperature be 40-45 DEG C, J=1.15, when liquid medium temperature be 45-50 DEG C, J=1.2(Often Group data do not include minimum value, including maximum value).The temperature of liquid medium is obtained by the measurement of temperature sensor 11, and temperature passes The temperature information measured is sent to data acquisition module 19 by sensor 11, and data acquisition module 19 transfers information to arithmetic element 14, arithmetic element 14 converts to obtain corresponding J values according to temperature data.
In the present embodiment, when the pressure at media outlet 10 is 0.8-0.85MPa, pressure coefficient K=0.8, when medium goes out When pressure at mouth 10 is 0.85-0.9MPa, pressure coefficient K=0.85, the pressure at media outlet 10 is 0.9-0.95MPa When, pressure coefficient K=0.9, when the pressure at media outlet 10 is 0.95-1.0MPa, pressure coefficient K=0.95, when medium goes out When pressure at mouth 10 is 1.0-1.05MPa, pressure coefficient K=1, when the pressure at media outlet 10 is 1.05-1.1MPa, Pressure coefficient K=1.05, when the pressure at media outlet 10 is 1.05-1.1MPa, pressure coefficient K=1.1, when media outlet 10 When the pressure at place is 1.1-1.15MPa, pressure coefficient K=1.15, when the pressure at media outlet 10 is 1.15-1.2MPa, pressure Force coefficient K=1.2(Every group of data do not include minimum value, including maximum value).Pressure at media outlet 10 passes through pressure sensor 12 measurements obtain, and the pressure information measured is sent to data acquisition module 19 by pressure sensor 12, and data acquisition module 19 will Information is sent to arithmetic element 14, and arithmetic element 14 converts to obtain corresponding K values according to pressure data.
In the present embodiment, when the rotating speed of turntable 22 is in 0-5r/min, I=0.8, when the rotating speed of turntable 22 is in 5-10r/min When, I=0.85, when the rotating speed of turntable 22 is in 10-15r/min, I=0.9, when the rotating speed of turntable 22 is in 15-20r/min, I= 0.95, when the rotating speed of turntable 22 is in 20-25r/min, I=1, when the rotating speed of turntable 22 is in 25-30r/min, I=1.05, when The rotating speed of turntable 22 is in 30-35r/min, I=1.1, when the rotating speed of turntable 22 is in 35-40r/min, I=1.15, when turntable 22 Rotating speed in 40-45r/min, I=1.2(Every group of data do not include minimum value, including maximum value).Driving motor 4 believes rotating speed Breath is sent to data acquisition module 19, and data acquisition module 19 transfers information to arithmetic element 14, and arithmetic element 14 is according to turning Fast data reduction obtains corresponding I values.
For example, it is 20-25 DEG C to work as peristaltic pump in liquid medium temperature, the pressure at media outlet 10 is 1.05-1.1MPa, The rotating speed of turntable 22 works 10h under conditions of 25-30r/min, then effective time T=10*0.95*1.05* of peristaltic pump 1.05=10.47h。
(3)The comparison of data:Operation control module 13 adds up the effective time of peristaltic pump, and passes through in real time Comparison unit 16 compares effective time and default hose life, when the effective time reaching setting value, report Alert device 20 is alarmed, and user is reminded to replace hose.
In addition, when liquid medium temperature is more than the pressure at 50 DEG C or media outlet 10 and is more than 1.2MPa, alarm 20 alarms, and it is simultaneously stopped driving motor 4, ensure the safe operation of peristaltic pump.
The present invention considers influence of the rotating speed to hose life of medium temperature, pressure and pump, is formed to the hose longevity The prediction of life can send out warning information before hose breakage, and user is reminded to replace hose, reduce dielectric loss, mitigation pair The influence of environment.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not limiting The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple It deduces, deform or replaces.

Claims (8)

1. a kind of intelligence peristaltic pump, which is characterized in that including the pump housing and control device, the pump housing includes sequentially connected pump Head, speed reducer and driving motor, the pump head are equipped with medium inlet and media outlet, and being equipped with temperature at the medium inlet passes Pressure sensor is equipped at sensor, the media outlet;The control device include data acquisition module, human-computer interaction module and Operation control module, the data acquisition module, human-computer interaction module are separately connected the operation control module, the driving electricity Machine, temperature sensor, pressure sensor are separately connected the data acquisition module.
2. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that the pump housing be internally provided with infusion tube, Turntable, pressure shoes, the turntable are disc, and the pressure shoes is 2 and is symmetrical arranged along the circumferential direction of the turntable that the turntable connects Connect driving motor.
3. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that the operation control module includes that storage is single Member, arithmetic element, comparison unit and output unit, the storage unit, comparison unit, output unit are all connected with the operation list Member.
4. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that the control device further includes frequency-variable module, The frequency-variable module connects the driving motor and operation control module.
5. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that the human-computer interaction module includes liquid crystal display Screen and control panel, the liquid crystal display, the control panel connect the operation control module.
6. a kind of intelligent peristaltic pump as claimed in claim 5, which is characterized in that the human-computer interaction module further includes that fingerprint is defeated Enter screen, the fingerprint input screen connects the operation control module.
7. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that the control device further includes alarm, institute It states alarm and connects the operation control module.
8. a kind of intelligent peristaltic pump as described in claim 1, which is characterized in that further include holder, the pump housing is set to institute It states on holder, the control device is set on the driving motor.
CN201810281606.5A 2018-04-02 2018-04-02 Intelligent peristaltic pump Pending CN108457845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810281606.5A CN108457845A (en) 2018-04-02 2018-04-02 Intelligent peristaltic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810281606.5A CN108457845A (en) 2018-04-02 2018-04-02 Intelligent peristaltic pump

Publications (1)

Publication Number Publication Date
CN108457845A true CN108457845A (en) 2018-08-28

Family

ID=63237036

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810281606.5A Pending CN108457845A (en) 2018-04-02 2018-04-02 Intelligent peristaltic pump

Country Status (1)

Country Link
CN (1) CN108457845A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110360087A (en) * 2019-04-22 2019-10-22 保定雷弗流体科技有限公司 The determination method, apparatus and peristaltic pump of the safe handling duration of wriggling pump hose
CN112228776A (en) * 2020-10-23 2021-01-15 华电水务工程有限公司 System for conveying and metering fluid based on hose pump and operation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101400894A (en) * 2006-03-11 2009-04-01 弗雷泽纽斯医疗保健德国有限公司 Method and device for operating an electric peristaltic hose pump
US20100135824A1 (en) * 2008-11-05 2010-06-03 Roche Diagnostics Operations, Inc. Process for Peristaltic Pump Control
CN202047972U (en) * 2011-03-18 2011-11-23 无锡市华茂电器研究所 Control system of end face peristaltic infusion pump
WO2013150006A1 (en) * 2012-04-02 2013-10-10 B. Braun Melsungen Ag Fluid conveyor device and fluid conveyor method for medical uses
CN105082750A (en) * 2014-05-21 2015-11-25 海德堡印刷机械股份公司 Method for operating printing machine pump assembly
KR101809129B1 (en) * 2017-02-28 2018-01-18 이앤엠 주식회사 Method of sensing tube damage and tube pump system with Y-typed tube
DE102016009596A1 (en) * 2016-08-06 2018-02-08 Thomas Magnete Gmbh Pump unit with pressure sensors and method for operating the pump set
CN208311014U (en) * 2018-04-02 2019-01-01 汉仲坤(上海)控制系统有限公司 Intelligent peristaltic pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101400894A (en) * 2006-03-11 2009-04-01 弗雷泽纽斯医疗保健德国有限公司 Method and device for operating an electric peristaltic hose pump
US20100135824A1 (en) * 2008-11-05 2010-06-03 Roche Diagnostics Operations, Inc. Process for Peristaltic Pump Control
CN202047972U (en) * 2011-03-18 2011-11-23 无锡市华茂电器研究所 Control system of end face peristaltic infusion pump
WO2013150006A1 (en) * 2012-04-02 2013-10-10 B. Braun Melsungen Ag Fluid conveyor device and fluid conveyor method for medical uses
CN105082750A (en) * 2014-05-21 2015-11-25 海德堡印刷机械股份公司 Method for operating printing machine pump assembly
DE102016009596A1 (en) * 2016-08-06 2018-02-08 Thomas Magnete Gmbh Pump unit with pressure sensors and method for operating the pump set
KR101809129B1 (en) * 2017-02-28 2018-01-18 이앤엠 주식회사 Method of sensing tube damage and tube pump system with Y-typed tube
CN208311014U (en) * 2018-04-02 2019-01-01 汉仲坤(上海)控制系统有限公司 Intelligent peristaltic pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110360087A (en) * 2019-04-22 2019-10-22 保定雷弗流体科技有限公司 The determination method, apparatus and peristaltic pump of the safe handling duration of wriggling pump hose
CN112228776A (en) * 2020-10-23 2021-01-15 华电水务工程有限公司 System for conveying and metering fluid based on hose pump and operation method thereof

Similar Documents

Publication Publication Date Title
US5062770A (en) Fluid pumping apparatus and system with leak detection and containment
CN108457845A (en) Intelligent peristaltic pump
NZ774827A (en) System for controlling water used for industrial food processing
CN110327510B (en) Infusion pump pipeline monitoring system
CN105756907A (en) Pneumatic diaphragm pump with controller
CN106762617A (en) Screw pump flow feedback governing system
CN208311014U (en) Intelligent peristaltic pump
CN108533479A (en) hose pump control system based on internet of things
CN111905185B (en) Method and device for detecting blockage of infusion pipeline of electronic micro pump
CN204007750U (en) Photoelectromagnetic coupling rotary-piston type flowmeters
CN208311074U (en) A kind of energy-saving micro pump
CN206504773U (en) A kind of discharge zone completely expects detection means
CN208311016U (en) A kind of split type peristaltic pump of multichannel
CN215812721U (en) Small hydropower station pollution monitoring device
CN207673533U (en) A kind of pulse damper
CN106949046A (en) Screw pump operating pressure detecting system
CN203619848U (en) Intelligent driving device of respiratory tract cleaning system
CN107080878A (en) Infusion pump and infusion device based on Piezoelectric Driving
CN211343307U (en) A compressor tolerance monitoring devices for intelligence is made
CN110030172B (en) Multi-pump head constant flow pump automatic system capable of accurately metering
CN207750212U (en) A kind of metering pump
CN206972508U (en) A kind of screw pump for facilitating maintenance overhaul
CN106968939A (en) A kind of breakage-proof method of peristaltic pump
CN118188384A (en) Control device and control method for multichannel diaphragm metering pump
CN209406322U (en) A kind of enamel still system of the adjustable agitating device of band

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180828