CN110950393A - Integration sewage treatment device automatic control device - Google Patents
Integration sewage treatment device automatic control device Download PDFInfo
- Publication number
- CN110950393A CN110950393A CN201911422766.8A CN201911422766A CN110950393A CN 110950393 A CN110950393 A CN 110950393A CN 201911422766 A CN201911422766 A CN 201911422766A CN 110950393 A CN110950393 A CN 110950393A
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- power supply
- automatic control
- control device
- sewage treatment
- plc
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- 239000010865 sewage Substances 0.000 title claims abstract description 21
- 230000010354 integration Effects 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000011001 backwashing Methods 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 238000005286 illumination Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The invention relates to an automatic control device of integrated sewage treatment equipment, which comprises a PLC (programmable logic controller), a three-phase four-wire power supply, a main breaker and nine breaking circuit breakers, wherein one ends of the nine breaking circuit breakers are respectively connected to the three-phase four-wire power supply through the main breaker, the other ends of the nine breaking circuit breakers are respectively connected to electric equipment and power supplies, a third breaking circuit breaker is connected with a water feeding pump through a normally open contact of a first alternating current contactor, a seventh breaking circuit breaker is connected with a backwashing water feeding pump through a normally open contact of a second alternating current contactor, the ninth breaking circuit breaker is connected with a fan and an illumination power supply between controls through a normally open contact of a third alternating current contactor, and coils of the first alternating current contactor, the second alternating current contactor and the third alternating current. Compared with the prior art, the invention can realize that the two blowers are mutually standby; the PLC and the frequency converter are adopted to control the air blower, dissolved oxygen data can be set, and automatic control of the dissolved oxygen is realized.
Description
Technical Field
The invention relates to a sewage treatment device control device, in particular to an integrated automatic sewage treatment device control device.
Background
The integrated domestic sewage treatment equipment of clean water source company can collect the units with different treatment functions in same biological reaction tank, such as anoxic zone, aeration zone, precipitation zone, non-blocking filtering zone and disinfection zone, and can save lots of tank volume, floor area and pipeline.
In order to realize the automatic control of the sewage treatment equipment, an integrated automatic control device of the sewage treatment equipment needs to be designed. The control device controls equipment to be an air blower for providing air for an aeration zone, a water feeding pump for feeding water for the equipment, a pressurizing pump for adding sodium hypochlorite for disinfection, a PAC dosing pump for removing phosphorus and a backwashing water pump for cleaning.
Disclosure of Invention
The invention aims to provide an automatic control device of integrated sewage treatment equipment, which solves the problems of inconvenient control, large occupied space and the like of the existing equipment.
The purpose of the invention can be realized by the following technical scheme:
an automatic control device of integrated sewage treatment equipment comprises a PLC (programmable logic controller), a three-phase four-wire power supply, a main breaker and nine breaking circuit breakers, wherein one ends of the nine breaking circuit breakers are connected to the three-phase four-wire power supply through the main breaker respectively, the other ends of the nine breaking circuit breakers are connected to a first air blower, a second air blower, a water feeding pump, a PLC (programmable logic controller) power supply, a direct-current 24V power supply, a backwashing water pump, a socket power supply, an instrument power supply, a control room fan and a lighting power supply respectively to form a primary loop, a third breaking circuit breaker is connected with the water feeding pump through a normally open contact of a first alternating current contactor, a seventh breaking circuit breaker is connected with the backwashing water feeding pump through a normally open contact of a second alternating current contactor, a ninth breaking circuit breaker is connected with the control room fan and the lighting power supply through a normally open contact of a third alternating current contactor, coils of the, the control loop is composed of a live wire and a neutral wire of a three-phase four-wire power supply.
The device still include first thermorelay and second thermorelay, the coil of first thermorelay and second thermorelay connect to respectively on the primary circuit of water feeding pump and backwash water pump, the normally closed contact of first thermorelay and second thermorelay connects to two output of PLC controller respectively.
The device still include third auxiliary relay and fourth auxiliary relay, the coil of third auxiliary relay be connected to the PLC controller output at the normally closed contact place of first thermal relay, the normally open contact of third auxiliary relay and first ac contactor's coil establish ties, the coil of fourth auxiliary relay be connected to the PLC controller output at the normally closed contact place of second thermal relay, the normally open contact of fourth auxiliary relay and second ac contactor's coil establish ties.
First branch circuit breaker and first air-blower between even have first converter, second branch circuit breaker and second air-blower between even have the second converter.
The device still include first intermediate relay and second intermediate relay, the normally open contact of first intermediate relay and second intermediate relay drive first converter and second converter work respectively, the coil of first intermediate relay and second intermediate relay connects to two output of PLC controller respectively.
And the auxiliary normally open contacts of the first alternating current contactor, the second alternating current contactor and the third alternating current contactor are respectively connected to three input ends of the PLC controller and used for indicating the running state.
The PLC controller is Siemens S7-200 Smart SR40 PLC.
And a power indicator lamp is arranged on the control loop.
Compared with the prior art, the invention has the following advantages:
1) through the PLC controllers S7-200 Smart SR40PLC and the Siemens touch screen SMART LINE700V3, when one blower fails or needs to be stopped, a second blower can be selected on the touch screen without influencing the automatic function of the operation of the equipment. The two air blowers can be mutually standby.
2) Because the PLC and the frequency converter are adopted to control the air blower, dissolved oxygen data can be set, PID tracking control is carried out on the dissolved oxygen, and automatic control of the dissolved oxygen is realized.
3) The PLC controller is Siemens S7-200 Smart SR40PLC, an industrial Ethernet gateway is configured, and equipment, dissolved oxygen, pH, water inlet flow and the like can be transmitted to a central control room through the Ethernet, so that the intelligent control system is more intelligent.
4) The whole electric and automatic control system can be integrated in a control cabinet, and the layout is reasonable. Not only avoids interference, but also saves space.
5) The water inlet pump can be stopped at a low position and opened at a high position, and the whole system can be unattended.
6) The PLC controller can have a data holding function, and can automatically recover the original running state under the condition that the external power supply supplies power after power failure.
Drawings
FIG. 1 is a schematic view of QF1-QF7 in a primary circuit of the automatic control device of the present embodiment;
FIG. 2 is a schematic view of QF 8-QF 9 in the primary circuit of the automatic control device of the present embodiment;
FIG. 3 is a schematic structural diagram of the QF1-QF 5 portions of the primary circuit of the automatic control device of the present embodiment;
FIG. 4 is a schematic structural diagram of the QF 6-QF 9 portions of the primary circuit of the automatic control device of the present embodiment;
FIG. 5 is a schematic diagram of a secondary circuit of the automatic control apparatus according to the present embodiment;
FIG. 6 is a schematic diagram of the PLC controller current of the automatic control device of the present embodiment;
FIG. 7 is a wiring diagram of a main CPU module in the PLC controller of the automatic control device according to the present embodiment; (ii) a
Fig. 8 is a wiring diagram of a digital output module EM DR08 in the PLC controller of the automatic control device of the present embodiment;
fig. 9 is a wiring diagram of an analog input module EM AE08 and an analog output module EM AQ04 in the PLC controller of the automatic control device of the present embodiment;
fig. 10 is a wiring diagram of a frequency converter in the automatic control device of the present embodiment.
Wherein: AC380V/50Hz is three-phase four-wire power input, QF is a total breaker, QF1-QF 9 are first to ninth breaking breakers, VFD1 and VFD2 are frequency converters, KA 1-KA 8 are first to eighth intermediate relays, KM 1-KM 2 are first to second alternating current contactors, KM5 is a third alternating current contactor, RJ 1-RJ 2 are first to second thermal relays, LR is a power indicator, GL is a lighting fluorescent lamp in a control cabinet, GC is a single-phase standby socket in the control cabinet, and PS is a 24V direct current power supply;
I0.0-I2.7 are a first logic input end-a twenty-fourth logic input end, Q0.0-Q8.7 are a first logic output end-a twenty-fourth logic output end, AI 0-AI 7 are a first analog input end-an eighth analog input end, AQ 0-AQ 3 are a first analog output end-a fourth analog output end, and ES is an emergency stop button on the control cabinet.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
An integrated automatic control device of sewage treatment equipment is shown in figure 1: seven main circuits of QF1-QF7 are shown. The power supply is respectively supplied to an air blower, a water feeding pump, a PLC, a lighting device, a socket, a dosing pump, a direct current 24V power supply and a backwashing water pump.
As shown in fig. 2: QF8 and QF9 respectively provide power for instruments, fans, control room lighting and the like.
As shown in fig. 3: the circuit breakers QF1-QF 5, the frequency converters VFD 1-VFD 2, the thermal relay RJ1, the fluorescent lamp and the standby socket. The lower end of QF1 is connected to the inlet terminal of a Siemens inverter VFD1, and the outlet terminal of VFD1 is connected to terminals U1, V1 and W1, so that the terminals are connected to the three-phase motor of the electric equipment blower 1.
The lower end of QF2 is connected to the inlet terminal of a Siemens inverter VFD2, and the outlet terminal of VFD2 is connected to terminals U2, V2 and W2, so that the terminals are connected to the three-phase motor of the electric equipment blower 2.
The lower end of QF3 is connected to the inlet terminal of contactor KM1, and the outlet of KM1 is directly plugged into the inlet terminal of thermal relay RJ 1. The outlet of the RJ1 is connected to the terminals U3, V3 and W3, which are in turn connected to the consumer water pump.
The lower end of QF4 is connected to the PLC 220VAC inlet power supply.
The lower end of QF5 is connected to the fluorescent lamp, the spare socket and the KA7 and KA8 intermediate relay of the dosing pump, see FIG. 4.
As shown in fig. 4: the lower end of QF6 is connected to the inlet terminal of 24V DC power supply, and the outlet terminal of 24V DC power supply is connected to external electric element and 24V DC terminal.
The lower end of QF7 is connected to contactor KM2, KM2 is directly connected to thermal relay RJ2, and then connected to output terminals U4, V4 and W4 through RJ 2. From which three terminals are reconnected to the consumer backwash pump.
The lower end of QF8 is connected with the inlet end of the power supply of the instrument to supply working power supply for pH instrument, dissolved oxygen instrument, flowmeter, etc.
The lower end of QF9 is connected with the incoming line end of a contactor KM5, and the lower end of KM5 is connected with the fan power supply of a control cabinet.
The upper ends of KA7 and KA8 are connected with inlet wires at the lower end of QF5, and the lower ends of KA7 and KA8 are respectively connected with a dosing pump 1 and a dosing pump 2 to provide working power for the dosing pumps.
As shown in fig. 5: the LR power indicator light is connected to the live line L1 and the neutral line N. The upper ends of normally open contacts of KA3, KA4 and KA5 are connected with an L1 live wire, the lower ends of the normally open contacts are connected with coil incoming wires of contactors KM1, KM2 and KM5 respectively, and the other ends of the coils of KM1, KM2 and KM5 are connected with a neutral wire N.
As shown in fig. 6: it comprises a 24V direct current working power supply; the Siemens S7-200 Smart SR40PLC is provided with an industrial Ethernet interface, an RS485 communication interface, 24 digital quantity inputs and 16 digital quantity outputs; an 8-channel digital quantity output module; an 8-channel analog input module; a 4-channel analog quantity output module; a 4-port industrial Ethernet switch; a Siemens SMART LINE700 IE V3 touch screen used with the PLC. The industrial Ethernet switch realizes the communication between the PLC and the touch screen and the communication between the programmed notebook computer and the PLC and the touch screen. The operating power for the touch screen and industrial ethernet is from a 24VDC power supply.
As shown in fig. 7: the system comprises a Siemens S7-200 Smart SR40PLC, wherein the single-phase alternating current 220VAC of a working power supply comes from QF 4; q0.0 is output to a 24VDC coil of the intermediate relay KA1, and the other end of the KA1 coil is connected with a 0V end of a direct current 24V. A normally open point of the KA1 drives the frequency converter VFD1 to start the frequency converter VFD1 to work.
Q0.1 is output to a 24VDC coil of the intermediate relay KA2, and the other end of the KA2 coil is connected with a 0V end of a direct current 24V. A normally open point of the KA2 drives the frequency converter VFD2 to start the frequency converter VFD2 to work.
Q0.2 is output to a normally closed contact of a thermal relay RJ1, the normally closed contact is opened to play a role in protection when the motor is in overcurrent and phase failure, the other end of the normally closed contact of the RJ1 is connected with a 24VDC coil of an intermediate relay KA3, and the other end of a KA3 coil is connected with a 0V end of a direct current 24V. The normally open point of KA3 drives contactor KM3, see fig. 5, to start the water pump.
Q0.3 is output to the normally closed contact of the thermal relay RJ2, the normally closed contact is cut off to play a role in protection when the motor is in overcurrent and phase failure, the other end of the normally closed contact of the RJ2 is connected with a 24VDC coil of the intermediate relay KA4, and the other end of the KA4 coil is connected with a 0V end of the direct current 24V. The normally open point of KA4 drives contactor KM4, see fig. 5, to activate the backwash water pump.
Q0.4 is output to a 24VDC coil of the intermediate relay KA5, and the other end of the KA5 coil is connected with a 0V end of a direct current 24V. The normally open point of KA5 drives contactor KM5, see fig. 5, which activates the control cabinet cooling fan.
The output of Q0.5 is connected with a 24VDC coil of the intermediate relay KA6, and the other end of the coil KA6 is connected with a 0V end of DC 24V. This way is ready for use.
Q0.6 is output to a 24VDC coil of the intermediate relay KA7, and the other end of the KA7 coil is connected with a 0V end of a direct current 24V. The normally open point of KA7 actuates the dosing pump 1, see fig. 4, to start the dosing pump 1 in operation.
Q0.7 is output to a 24VDC coil of the intermediate relay KA8, and the other end of the KA8 coil is connected with a 0V end of a direct current 24V. The normally open point of KA8 actuates the dosing pump 2, see fig. 4, to start the dosing pump 2 in operation.
Q1.0-Q1.7 are all reserved.
I0.0 is an input signal of an emergency stop button arranged on a panel of the control cabinet. Pressing the emergency stop button on the control cabinet panel in case of emergency can stop all the equipment. I0.1-I0.2 for standby.
I0.3 is the high signal input of the liquid level of the sewage intake pool and is introduced by a field liquid level switch. When the liquid level input has a signal, the water inlet pump is started to work.
I0.4 is the liquid level low signal input of the sewage inlet pool and is introduced by a field liquid level switch. When the liquid level input has a signal, the water inlet pump stops working.
I0.5 is the blower 1 operating signal input, introduced by the frequency converter VFD1, see fig. 10. When a signal is input, this indicates that the blower 1 is operating.
I0.6 is the blower 2 operating signal input, introduced by the frequency converter VFD2, see fig. 10. When a signal is input, this indicates that the blower 2 is operating.
I0.7 is the running signal input of the water feeding pump and is introduced by a KM1 auxiliary normally open point. When a signal is input, the water pump is operated.
I1.0 is the backwash pump operation signal input, introduced by KM2 assisted normally open point. When a signal is provided to this input, this indicates that the backwash pump is operating.
I1.1 is the input of a water feeding pump operation signal and is introduced by a KM5 auxiliary normally open point. When a signal is input, the water pump is operated. I1.2-I2.7 are all reserved.
As shown in fig. 8: it includes a Siemens digital output module EM DR08 and a transmitter CM442R from E + H. The working power supply of the digital quantity output module is from a 24VDC direct current power supply, and other output points Q8.0-Q8.7 are standby points. The 220VAC working power supply of the instrument comes from QF8, and the dissolved oxygen sensor and the pH sensor are respectively connected to the transmitter through brown, white, green and yellow wires. And outputting 4-20 mA signals of pH, dissolved oxygen and temperature to AI0, AI1 and AI4 of an analog input module EM AE08 respectively. See figure 9.
As shown in fig. 9: it includes a Siemens 8-channel analog input module EM AE08 and a 4-channel analog output module. The working power supply of the analog quantity module is from a 24VDC direct current power supply. Signals of pH, dissolved oxygen and temperature of 4-20 mA from an E + H instrument are respectively input to channels of analog quantity input modules AI0, AI1 and AI 4. See figure 8. Signals with frequencies of 4-20 mA sent by the frequency converters of the VFD1 and the VFD2 are respectively input to input ends of AI2 and AI 3. And 4-20 mA signals representing the flow from the inlet water flow transmitter are input to the AI 5.
The AQ0 and AQ1 channels of the analog output module respectively output 0-20 mA signals to the frequency converters VFD1 and VFD2 to control the frequency of the frequency converters and achieve the purpose of controlling the rotating speed of the air blower.
As shown in fig. 10: it includes frequency converters VFD1 and VFD2 that control the blower. The AI1 receives signals from the analog output module to control the frequency. A0 transmits 4-20 mA signals output by the operating frequency of a frequency converter VFD1 and a VFD2 to AI2 and AI3 of an analog input module EM AE 08. See figure 9.
DI1 accepts the start command from the PLC and DO2 transmits a run signal to the PLC.
The steps of the device operation are as follows:
(a) firstly, closing a main breaker QF of a control cabinet, wherein the control cabinet is in a power-on state; the power indicator light is on at this time.
(b) And closing all the internal branch breakers in the cabinet.
(c) Inputting a dissolved oxygen value to be tracked on a control screen of a touch screen, selecting an air blower 1 or 2, selecting a mode to be automatic, pressing a starting automatic button, and automatically operating the system; the automatic and manual modes of operation are switched by mode selection. The manual operation inputs a blower frequency setting at which the blower will operate constantly.
(d) When the system is to be stopped, the system can be stopped automatically by pressing a starting automatic button.
(e) When an emergency occurs, the emergency stop button of the panel of the control cabinet can be pressed, and all equipment stops.
(g) The operating state and the operating parameter information of each pump and the like are displayed on the touch screen HMI.
Claims (8)
1. The automatic control device of the integrated sewage treatment equipment is characterized by comprising a PLC (programmable logic controller), a three-phase four-wire power supply, a main breaker and nine breaking circuit breakers, wherein one ends of the nine breaking circuit breakers are connected to the three-phase four-wire power supply through the main breaker respectively, the other ends of the nine breaking circuit breakers are connected to a first air blower, a second air blower, a water feeding pump, a PLC (programmable logic controller) power supply, a direct-current 24V power supply, a backwashing water pump, a socket power supply, an instrument power supply, a control room fan and a lighting power supply respectively to form a primary loop, a third breaking circuit breaker is connected with the water feeding pump through a normally open contact of a first alternating-current contactor, a seventh breaking circuit breaker is connected with the backwashing water feeding pump through a normally open contact of a second alternating-current contactor, a ninth breaking circuit breaker is connected with the control room fan and the, And the coils of the second alternating current contactor and the third alternating current contactor are respectively connected to a control loop, and the control loop is formed by a live wire and a neutral wire of a three-phase four-wire power supply.
2. The automatic control device of the integrated sewage treatment equipment according to claim 1, further comprising a first thermal relay and a second thermal relay, wherein coils of the first thermal relay and the second thermal relay are respectively connected to a primary circuit of the water feeding pump and a primary circuit of the backwashing water pump, and normally closed contacts of the first thermal relay and the second thermal relay are respectively connected to two output ends of the PLC.
3. The automatic control device of the integrated sewage treatment equipment according to claim 1, further comprising a third intermediate relay and a fourth intermediate relay, wherein a coil of the third intermediate relay is connected to the output end of the PLC controller where the normally closed contact of the first thermal relay is located, a normally open contact of the third intermediate relay is connected in series with a coil of the first AC contactor, a coil of the fourth intermediate relay is connected to the output end of the PLC controller where the normally closed contact of the second thermal relay is located, and a normally open contact of the fourth intermediate relay is connected in series with a coil of the second AC contactor.
4. The automatic control device of integrated sewage treatment equipment according to claim 1, wherein a first frequency converter is connected between the first branch breaker and the first blower, and a second frequency converter is connected between the second branch breaker and the second blower.
5. The automatic control device of the integrated sewage treatment equipment according to claim 4, further comprising a first intermediate relay and a second intermediate relay, wherein the normally open contacts of the first intermediate relay and the second intermediate relay respectively drive the first frequency converter and the second frequency converter to work, and the coils of the first intermediate relay and the second intermediate relay are respectively connected to two output ends of the PLC.
6. The automatic control device of the integrated sewage treatment equipment according to claim 1, wherein the auxiliary normally open contacts of the first ac contactor, the second ac contactor and the third ac contactor are respectively connected to three input ends of a PLC controller for indicating an operation state.
7. The automatic control device of an integrated sewage treatment equipment according to claim 1, wherein the PLC controller is Siemens S7-200 Smart SR40 PLC.
8. The automatic control device of an integrated sewage treatment device according to claim 1, wherein a power indicator is arranged on the control loop.
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| CN201911422766.8A CN110950393A (en) | 2019-12-31 | 2019-12-31 | Integration sewage treatment device automatic control device |
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| CN201911422766.8A CN110950393A (en) | 2019-12-31 | 2019-12-31 | Integration sewage treatment device automatic control device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379466Y (en) * | 1999-06-08 | 2000-05-24 | 沈阳东宇电器有限公司 | AC frequency conversion type automatic aeration control device |
| CN201322856Y (en) * | 2008-12-29 | 2009-10-07 | 西安陕鼓动力股份有限公司 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
| CN201450481U (en) * | 2009-04-15 | 2010-05-05 | 西安陕鼓动力股份有限公司 | Control circuit of motor of blower unit |
| CN106026792A (en) * | 2016-05-26 | 2016-10-12 | 江苏省冶金设计院有限公司 | Power frequency and variable frequency operation switching control device for three working air blowers and two standby air blowers |
| CN205809665U (en) * | 2016-07-01 | 2016-12-14 | 安庆市佰联无油压缩机有限公司 | A kind of compressor variable frequency control system for oxygen recovery |
| CN211813497U (en) * | 2019-12-31 | 2020-10-30 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
-
2019
- 2019-12-31 CN CN201911422766.8A patent/CN110950393A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379466Y (en) * | 1999-06-08 | 2000-05-24 | 沈阳东宇电器有限公司 | AC frequency conversion type automatic aeration control device |
| CN201322856Y (en) * | 2008-12-29 | 2009-10-07 | 西安陕鼓动力股份有限公司 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
| CN201450481U (en) * | 2009-04-15 | 2010-05-05 | 西安陕鼓动力股份有限公司 | Control circuit of motor of blower unit |
| CN106026792A (en) * | 2016-05-26 | 2016-10-12 | 江苏省冶金设计院有限公司 | Power frequency and variable frequency operation switching control device for three working air blowers and two standby air blowers |
| CN205809665U (en) * | 2016-07-01 | 2016-12-14 | 安庆市佰联无油压缩机有限公司 | A kind of compressor variable frequency control system for oxygen recovery |
| CN211813497U (en) * | 2019-12-31 | 2020-10-30 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
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