CN210457712U - Water treatment system - Google Patents
Water treatment system Download PDFInfo
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- CN210457712U CN210457712U CN201921438317.8U CN201921438317U CN210457712U CN 210457712 U CN210457712 U CN 210457712U CN 201921438317 U CN201921438317 U CN 201921438317U CN 210457712 U CN210457712 U CN 210457712U
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Abstract
The utility model discloses a water treatment system. The water treatment system comprises a pretreatment device, a reverse osmosis treatment device and a controller, wherein the pretreatment device is connected with the reverse osmosis treatment device through a pipeline, the controller is electrically connected with the pretreatment device, the controller is electrically connected with the reverse osmosis treatment device, the controller controls the pretreatment device to pretreat tap water, the controller controls the reverse osmosis treatment device to perform reverse osmosis treatment on pretreated water, and the controller comprises a control circuit board or a programmable logic controller. This water treatment system adopts the controller including control circuit board or PLC controller to carry out centralized control to each electric components for control circuit is simpler, has simplified electric wiring, has made things convenient for troubleshooting and operation, has improved the reliability and the stability of control.
Description
Technical Field
The utility model relates to a water treatment technology, concretely relates to water treatment system.
Background
Since the realization of industrial application, the reverse osmosis technology is widely applied to water purification and desalination in the fields of seawater desalination, municipal water supply and sewage treatment, petrochemical industry, electric power engineering, metallurgical industry, light and heavy chemical industry, electronic industry, pharmaceutical industry, video industry and the like in the global range, and becomes one of the mainstream technologies of water treatment processes in a plurality of important industrial fields.
In recent years, the application field of reverse osmosis water treatment technology is increasingly expanded and the engineering scale is increasingly enlarged on a global scale. Reverse osmosis water treatment processes have begun to replace evaporation/distillation in seawater desalination as the primary water diversion treatment process. In the municipal water treatment field, the reverse osmosis water treatment can effectively solve the problem of micro-pollution and improve the quality level of municipal water supply. In the field of sewage treatment, reverse osmosis water treatment has become a main process for municipal sewage resource treatment, and the on-site high-quality recovery of sewage becomes possible. In various industrial industries, reverse osmosis water treatment effectively improves water quality, reduces energy consumption, reduces pollution, and improves the process level and the product level of related industries.
Reverse osmosis water treatment technology is also developed at a high speed in China, is widely applied to the industrial industries such as petroleum, chemical industry, electric power, metallurgy, electronics, medicine, food and the like, is comprehensively applied to the direct drinking water markets of residents such as barreling, bottling and the like, is expanded to the fields of various agricultural productions such as planting industry, breeding industry and the like, and is applied to the municipal engineering fields such as urban water supply, sewage and the like. The reverse osmosis water treatment technology is widely applied to the fields of seawater and brackish water desalination, pure water and ultrapure water preparation, sewage and reclaimed water treatment and the like, and simultaneously gradually forms a novel membrane method water treatment industry which takes a reverse osmosis membrane technology as a core and is continuously developed at a high speed.
In the prior art, a reverse osmosis water treatment device is controlled by a relay, and the problems of complex control structure, unreliability, various electric wiring and the like exist.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a water treatment system to simplify control structure, reduce electric wiring, improve control reliability.
In order to solve the technical problem, the embodiment of the utility model provides a water treatment system, including preprocessing device, reverse osmosis treatment device and controller, preprocessing device with reverse osmosis treatment device passes through the pipe connection, the controller with the preprocessing device electricity is connected, the controller with reverse osmosis treatment device electricity is connected, the controller control preprocessing device carries out the preliminary treatment to the running water, the controller control reverse osmosis treatment is carried out to the water after the preliminary treatment to reverse osmosis treatment device, the controller includes control circuit board or programmable logic controller.
Optionally, preprocessing device is including the water storage container who receives the preliminary treatment water, reverse osmosis unit is including communicating in proper order water storage container delivery port's first delivery pump, first solenoid valve, first booster pump, first order reverse osmosis unit and pure water container, water storage container is provided with first low water level switch and first high water level switch, first low water level switch, first high water level switch, first delivery pump, first solenoid valve and first booster pump all with the corresponding port electricity of controller is connected.
Optionally, the water storage container is further provided with a first protection water level switch for detecting that the water level in the water storage container is too low, the pure water container is provided with a second low water level switch and a second high water level switch, the first protection water level switch, the second low water level switch and the second high water level switch are all electrically connected with corresponding ports of the controller, when the controller receives the trigger signal of the second low water level switch but does not receive the trigger signal of the first protection water level switch, the controller sends a corresponding start signal to the first delivery pump to start the first delivery pump, and when the controller receives the trigger signal of the second high water level switch, the controller sends a corresponding stop signal to the first delivery pump to stop the first delivery pump.
Optionally, the reverse osmosis treatment device further comprises a pressure switch communicated between the first delivery pump and the first electromagnetic valve and used for triggering when the pressure of a water path reaches a preset value, the pressure switch is electrically connected with a corresponding port of the controller, and when the controller receives a trigger signal of the pressure switch, the controller sends an opening signal to the first electromagnetic valve to open the first electromagnetic valve.
Optionally, the controller controls the first booster pump to be started in a delayed manner, when the controller sends a corresponding starting signal to the first delivery pump, the controller starts to be started in a delayed manner for timing, the controller receives a triggering signal of the pressure switch and the delayed starting timing is finished, and the controller sends a corresponding starting signal to the first booster pump to start the first booster pump.
Optionally, a concentrated water end of the first-stage reverse osmosis device is communicated with a first flushing solenoid valve, when the controller sends a corresponding starting signal to the first booster pump, the controller sends a corresponding opening signal to the first flushing solenoid valve to open the first flushing solenoid valve, and starts delayed turn-off timing, and water pumped into the first-stage reverse osmosis device by the first booster pump is discharged through the first flushing solenoid valve; when the time delay turn-off timing is finished, the controller sends a corresponding turn-off signal to the first flushing electromagnetic valve to turn off the first flushing electromagnetic valve, and water pumped into the first-stage reverse osmosis device by the first booster pump enters the pure water container after being filtered by the first-stage reverse osmosis device.
Optionally, the reverse osmosis treatment device further comprises a first overpressure switch communicated between the first-stage reverse osmosis device and the first booster pump and used for triggering when the water circuit pressure reaches a preset value, and the controller sends a prompt message when receiving a trigger signal of the first overpressure switch.
Optionally, the reverse osmosis device further comprises a second electromagnetic valve, a second booster pump and a second-stage reverse osmosis device which are sequentially communicated between the first-stage reverse osmosis device and the pure water container, the reverse osmosis treatment device further comprises a second overpressure switch which is communicated between the second booster pump and the second-stage reverse osmosis device and is used for triggering when the water path pressure reaches a preset value, the concentrated water end of the second-stage reverse osmosis device is communicated with a second flushing electromagnetic valve, and the second electromagnetic valve, the second booster pump, the second overpressure switch and the second flushing electromagnetic valve are all electrically connected with corresponding ports of the controller.
Optionally, the pre-treatment device comprises a softening treatment device for providing soft water to the water storage container, the softening treatment device comprises a tap water booster pump, a softening device and a soft water electromagnetic valve which are sequentially communicated, the water inlet end of the tap water booster pump receives tap water, the soft water electromagnetic valve is communicated with the water storage container, the tap water booster pump and the soft water electromagnetic valve are electrically connected with corresponding ports of the controller,
when the controller receives a trigger signal of the first low water level switch, the controller sends a corresponding starting signal to the tap water booster pump to start the tap water booster pump, and sends a corresponding opening signal to the soft water electromagnetic valve to start the soft water electromagnetic valve;
and when the controller receives the trigger signal of the first high water level switch, the controller sends a corresponding stop signal to the tap water booster pump to stop the tap water booster pump, and sends a corresponding turn-off signal to the soft water electromagnetic valve to turn off the soft water electromagnetic valve.
Optionally, the water treatment system further comprises an ultrapure water treatment device, wherein the ultrapure water treatment device comprises a second delivery pump, a third electromagnetic valve, an ultrapure water container, a third delivery pump, an ultrafiltration device and a flow regulating valve which are communicated in sequence, the water inlet end of the second delivery pump is communicated with the pure water container, the water outlet end of the flow regulating valve is communicated to the water inlet end of the ultrapure water container, the pure water container is also provided with a second protection water level switch for detecting that the water level in the pure water container is too low, the ultrapure water container is provided with a third low water level switch, a third high water level switch and a third protection water level switch for detecting that the water level in the ultrapure water container is too low, and the third electromagnetic valve, the third delivery pump, the second protection water level switch, the third low water level switch, the third high water level switch and the third protection water level switch are all electrically connected with corresponding ports of the controller.
The water treatment system that this embodiment provided no longer adopts the relay to control, but adopts the controller including control circuit board or PLC to carry out centralized control to each electric components in the water treatment system for control circuit is simpler, has simplified control structure and electric line of walking, has made things convenient for troubleshooting and operation, has improved the reliability and the stability of control, has realized water treatment system's automatic control.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.
FIG. 1 is a schematic diagram of an electrical structure of a water treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a pipeline connection structure of a water treatment system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the external wiring of the PLC.
Description of reference numerals:
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The technical content of the present invention will be described in detail by specific embodiments.
Fig. 1 is an electrical schematic diagram of a water treatment system according to an embodiment of the present invention. As shown in fig. 1, the water treatment system includes a pretreatment device 10 and a reverse osmosis treatment device 20, and the pretreatment device 10 and the reverse osmosis treatment device 20 are connected by a pipe. The water treatment system further includes a control module including a controller, and the controller 70 may include a control circuit board or a Programmable Logic Controller (PLC). The electric components in the pretreatment device 10 and the reverse osmosis treatment device 20 are electrically connected with the controller. The controller controls the pretreatment device 10 to pretreat tap water and controls the reverse osmosis treatment device 20 to perform reverse osmosis filtration treatment on the pretreated water by controlling the working states of the corresponding electrical components. In this embodiment, the pre-treatment device may be a softening treatment device to soften tap water to obtain soft water, and the reverse osmosis treatment device includes a reverse osmosis device (referred to as RO device, for example, RO membrane) for performing reverse osmosis filtration on the soft water to obtain pure water.
Fig. 2 is a schematic view of a pipeline connection structure of a water treatment system according to an embodiment of the present invention. As shown in fig. 2, the pretreatment apparatus 10 includes a tap water booster pump 11, a softening apparatus 12, a soft water solenoid valve 13, and a water storage tank 14, which are connected in order through a pipe. A first high level switch 141 and a first low level switch 142 are provided in the water storage tank 14. A first protective water level switch 143 is also provided in the water storage container 14. The tap water booster pump 11, the soft water solenoid valve 13, the first high water level switch 141, the first low water level switch 142 and the first protection water level switch 143 are all electrically connected to corresponding ports of the controller.
When the water level in the water storage container 14 is at a low water level, the first low water level switch 142 is triggered, and after the controller receives a trigger signal of the first low water level switch 142, the controller sends a corresponding opening signal to the soft water electromagnetic valve 13 to control the soft water electromagnetic valve 13 to be opened and conducted, and sends a corresponding starting signal to the tap water booster pump 11 to control the tap water booster pump 11 to be started, and the tap water enters the softening device 12 under the action of the tap water booster pump 11 to be softened. The soft water discharged from the softening device 12 passes through the soft water solenoid valve 13 and then enters the water storage container 14. When the water level in the water storage container 14 reaches the high-level water, the first high-level switch 141 is triggered, and after receiving a trigger signal of the first high-level switch, the controller sends a corresponding stop signal to the tap water booster pump 11 to control the tap water booster pump 11 to stop, and sends a corresponding turn-off signal to the soft water solenoid valve 13 to control the soft water solenoid valve 13 to turn off, so that the softening treatment process is completed.
In this embodiment, the water level corresponding to the first protection water level switch 143 is lower than the water level corresponding to the first low water level switch 142.
As shown in fig. 2, the reverse osmosis treatment apparatus includes a first transfer pump 21, a pressure switch 22, a first solenoid valve 23, a first pressurizing pump 24, a first-stage reverse osmosis apparatus 25, and a pure water container 30, which are sequentially communicated. The first transfer pump 21 communicates with the water storage tank 14. A second high water level switch 301 and a second low water level switch 302 are provided in the pure water tank 30, and a second protection water level switch 303 is also provided in the pure water tank 30. The water outlet end of the first booster pump 24 is communicated with the raw water end of the first stage reverse osmosis device 25, and the pure water end of the first stage reverse osmosis device 25 is communicated with the pure water container 30. The reverse osmosis treatment unit further comprises a first flush solenoid valve 51 in communication with the concentrate side of the first stage reverse osmosis unit 25. The first delivery pump 21, the pressure switch 22, the first solenoid valve 23, the first booster pump 24, the first flushing solenoid valve 51, the second high water level switch 301 and the second low water level switch 302 are all electrically connected with corresponding ports of the controller.
When the water level in the pure water container 30 is at a low water level, the second low water level switch 302 is triggered, and after the controller receives a trigger signal from the second low water level switch 302, the controller sends a corresponding starting signal to the first delivery pump 21 to control the first delivery pump 21 to start; when the pressure switch 22 detects that the pressure of the water outlet end of the first delivery pump 21 reaches a preset value, the pressure switch 22 is triggered, and when the controller receives a trigger signal from the pressure switch 22, the controller sends a corresponding opening signal to the first electromagnetic valve 23 and sends a corresponding starting signal to the first booster pump 24, so as to control the first electromagnetic valve 23 to be opened and conducted and the first booster pump 24 to be started.
In order to improve the filtering effect of the first stage reverse osmosis device 25, the controller controls the first flushing solenoid valve 51 to be closed in a delayed time mode, so that when the controller sends a corresponding starting signal to the first booster pump 24, the controller simultaneously sends a corresponding opening signal to the first flushing solenoid valve 51 to control the first flushing solenoid valve 51 to be opened and start delayed time counting. At this time, the water introduced into the first reverse osmosis apparatus 25 from the first booster pump 24 is discharged through the first flushing solenoid valve 51 to flush the first reverse osmosis apparatus 25, and the flushed water is discharged into a trench or a sewer, or may be recycled.
When the delay time of the first flushing solenoid valve 51 is over, the controller sends a corresponding turn-off signal to the first flushing solenoid valve 51 to control the first flushing solenoid valve 51 to be closed; the soft water enters the first-stage reverse osmosis device 25 after being pressurized by the first booster pump 24, the first-stage reverse osmosis device 25 filters the soft water, and pure water produced by filtering flows out of the pure water end of the first-stage reverse osmosis device 25 and enters the pure water container 30. When the water level in the pure water container 30 reaches the high water level, the second high water level switch 301 is triggered, and after the controller detects and receives the trigger signal from the second high water level switch 301, the controller controls the first delivery pump 21, the first electromagnetic valve 23 and the first booster pump 24 to be closed, the pressure switch 22 is disconnected after losing pressure, and the pure water treatment process is completed.
At the initial stage of the water supply to the pipe by the first pump 21, the pressure in the pipe becomes unstable, and the pressure switch 22 is likely to malfunction. In order to prevent the first booster pump 24 from being damaged due to operation under the condition of insufficient or unstable pressure at the water inlet end, in the embodiment, the controller controls the first booster pump 24 to be started and opened in a delayed manner to wait for the pressure in the pipeline to be stable and reach a preset value, so that the first booster pump 24 can be prevented from being operated under the condition of insufficient pressure at the water inlet end, and the service life of the first booster pump 24 is ensured.
Therefore, in this embodiment, when the controller sends a corresponding start signal to the first delivery pump 21, the controller starts the delay start timing, and when the controller receives the trigger signal of the pressure switch 22 and the delay start timing is over, the controller sends a corresponding start signal to the first booster pump 24 to start the first booster pump 24.
In one embodiment, the delayed on time of the first booster pump 24 is adjustable and the delayed off time of the first rinse solenoid valve 51 is adjustable.
The control module may further include a human-machine interaction panel electrically connected to the controller. The time delay of the opening of the first booster pump 24 and the time delay of the closing of the first flushing solenoid valve 51 may be adjusted through a human-machine interface panel.
In order to avoid the idle rotation damage of the first delivery pump 21 under the condition of insufficient water amount, as shown in fig. 2, a first protection water level switch 143 for detecting that the water level in the water storage container 14 is too low is further arranged in the water storage container 14, the water level corresponding to the first protection water level switch 143 is lower than the water level corresponding to the first low water level switch 142, and the first protection water level switch 143 is electrically connected with a corresponding port of the controller. When the water level in the pure water container 30 is at the low water level, the second low water level switch 302 is triggered, the controller receives the trigger signal of the second low water level switch 302 and then judges whether the first protection water level switch 143 is triggered, if the controller receives the trigger signal of the first protection water level switch 143, the controller indicates that the water level in the water storage container 14 is too low, at this time, the controller does not control the first delivery pump 21 to be started, but controls the soft water treatment device to perform soft water treatment until the water level in the water storage container 14 is higher than the water level corresponding to the first protection water level switch 143. That is, when the controller receives the trigger signal of the second low water level switch but does not detect the trigger signal of the first protection water level switch, the controller sends an on signal to the first delivery pump 21 to control the first delivery pump 21 to be turned on. When the first protection water level switch is triggered, the controller controls the first delivery pump 21 to stop running, so that the first delivery pump is prevented from idling without water, and the first delivery pump is prevented from being damaged.
It will be readily appreciated that the first stage reverse osmosis unit needs to be replaced in time after a period of use to avoid the reverse osmosis unit from plugging the pipeline. In order to prompt the replacement of the first-stage reverse osmosis device in time, as shown in fig. 2, a first overpressure switch 61 is arranged at the raw water end of the first-stage reverse osmosis device 25, the first overpressure switch 61 is used for detecting the water pressure at the raw water end of the first-stage reverse osmosis device, and the first overpressure switch 61 is electrically connected with a corresponding port of the controller. When dirt in the first-stage reverse osmosis device is too much, the pressure of the raw water end of the first-stage reverse osmosis device 25 is increased, when the first overpressure switch 61 detects that the pressure of the raw water end of the first-stage reverse osmosis device 25 reaches a threshold value, the first overpressure switch 61 is triggered, the controller receives a trigger signal from the first overpressure switch 61, and the controller sends an alarm prompt to remind a user to replace the first-stage reverse osmosis device, so that the operation safety of the first-stage reverse osmosis device is guaranteed.
In order to obtain pure water of better quality, in one embodiment, the reverse osmosis treatment apparatus 20 further includes a second solenoid valve 26, a second pressurizing pump 27, and a second-stage reverse osmosis apparatus 28, which are sequentially connected between the first-stage reverse osmosis apparatus 25 and the pure water container 30. The second electromagnetic valve 26 is communicated with the pure water end of the first stage reverse osmosis device 25, the second booster pump 27 is communicated with the raw water end of the second stage reverse osmosis device 28, and the pure water end of the second stage reverse osmosis device 28 is communicated with the pure water container 30. The reverse osmosis treatment unit also includes a second flush solenoid valve 52 in communication with the concentrate side of the second stage reverse osmosis unit 28. Wherein, the second solenoid valve 26 and the second booster pump 27 are electrically connected with corresponding ports of the controller.
In order to improve the filtering effect of the second stage reverse osmosis device 28, the controller controls the second booster pump 27 to be turned on in a delayed mode, and simultaneously controls the second flushing solenoid valve 52 to be turned on and then turned off in a delayed mode.
During pure water treatment, the controller controls the second solenoid valve 26 to open and conduct, and at the same time controls the second booster pump 27 to start time-delay timing, and when the timing of the second booster pump 27 is completed, the controller controls the second booster pump 27 to open and conduct, and at the same time controls the second flushing solenoid valve 52 to conduct and start time-delay timing. At this time, the water introduced into the second reverse osmosis apparatus 28 from the second booster pump 27 is discharged through the second flushing solenoid valve 52 to flush the second reverse osmosis apparatus 28, and the flushed water is discharged into a trench or a sewer, or may be recycled.
When the delay time of the second flushing solenoid valve 52 is finished, the controller controls the second flushing solenoid valve 52 to be turned off, the water pressurized by the second booster pump 27 enters the second-stage reverse osmosis device 28, the second-stage reverse osmosis device 28 filters the water entering the second-stage reverse osmosis device, and the filtered pure water flows out of the pure water end of the second-stage reverse osmosis device 28 and enters the pure water container 30. When the water level in the pure water container 30 reaches the high water level, the second high water level switch 301 is actuated, and after the controller detects a high water level signal from the second high water level switch 301, the controller controls the first delivery pump 21, the first electromagnetic valve 23, the first booster pump 24, the second electromagnetic valve 26 and the second booster pump 27 to be closed, the pressure switch 22 is disconnected after pressure loss, and the pure water treatment process is completed.
In one embodiment, the delayed opening time of the second booster pump 27 is adjustable, and the delayed closing time of the second flush solenoid valve 52 is adjustable. The time-delayed opening time of the second booster pump 27 and the time-delayed closing time of the second flush solenoid valve 52 may be adjusted by a human-machine interface panel.
In order to prompt the replacement of the second stage reverse osmosis device in time, as shown in fig. 2, a second overpressure switch 62 is arranged at the raw water end of the second stage reverse osmosis device 28, the second overpressure switch 62 is used for detecting the water pressure at the raw water end of the second stage reverse osmosis device, and the second overpressure switch 62 is electrically connected with a corresponding port of the controller. When the second-stage reverse osmosis device is polluted, the pressure of the raw water end of the second-stage reverse osmosis device 28 is increased, when the second overpressure switch 62 detects that the pressure of the raw water end of the second-stage reverse osmosis device 28 reaches a threshold value, the second overpressure switch 62 is actuated, the controller detects an overpressure signal from the second overpressure switch 62, and the control module sends an alarm prompt to remind a user of replacing the second-stage reverse osmosis device, so that the operation safety of the second-stage reverse osmosis device is guaranteed.
The pure water treatment process comprises the following steps:
when the water level in the pure water container 30 is at a low water level, the second low water level switch 302 is triggered, the controller receives a trigger signal from the second low water level switch 302, and the controller does not detect the trigger signal from the first protective water level switch 143, the controller controls the first delivery pump 21 to start, and controls the first booster pump 24 to start timing in a delayed starting mode; when the pressure switch 22 receives a signal from the pressure switch 22 and the time delay opening timing of the first booster pump 24 is finished, the controller controls the first electromagnetic valve 23, the first booster pump 24 and the first flushing electromagnetic valve 51 to be opened and conducted, and simultaneously, the time delay opening counting of the first flushing electromagnetic valve 51 is started, at the moment, water entering the first-stage reverse osmosis device 25 from the first booster pump 24 is discharged through the first flushing electromagnetic valve 51 to flush the first-stage reverse osmosis device 25; when the delayed turn-off counting of the first flushing electromagnetic valve 51 is finished, the controller controls the first flushing electromagnetic valve 51 to be turned off, the second electromagnetic valve 26 to be turned on and turned off, and the second booster pump 27 to be turned on and started with delayed timing; when the time delay starting timing of the second booster pump 27 is over, the controller controls the second booster pump 27 to be started and conducted, the second flushing electromagnetic valve 52 to be started and conducted, and meanwhile, the time delay stopping counting of the second flushing electromagnetic valve 52 is started, at the moment, the water entering the second-stage reverse osmosis device 28 from the second booster pump 27 is discharged through the second flushing electromagnetic valve 52, so that the second-stage reverse osmosis device 28 is flushed; when the delayed turn-off counting of the second flushing electromagnetic valve 52 is finished, the controller controls the second flushing electromagnetic valve 52 to be turned off, the water pressurized by the second booster pump 27 enters the second-stage reverse osmosis device 28, the second-stage reverse osmosis device 28 filters the water entering the second-stage reverse osmosis device, and the filtered pure water flows out of the pure water end of the second-stage reverse osmosis device 28 and enters the pure water container 30; when the water level in the pure water container 30 reaches the high water level, the second high water level switch 301 is actuated, and after the controller receives the trigger bit signal from the second high water level switch 301, the controller controls the first delivery pump 21, the first electromagnetic valve 23, the first booster pump 24, the second electromagnetic valve 26 and the second booster pump 27 to be closed, the pressure switch 22 is closed after pressure loss, and the pure water treatment process is completed.
In one embodiment, as shown in FIG. 2, the water treatment system further comprises an ultrapure water treatment device 40. The ultrapure water treatment apparatus 40 comprises a second feed pump 41, a first three-way joint 42, a third electromagnetic valve 43, an ultrapure water container 44, a third feed pump 45, an ultrafiltration device 46, a second three-way joint 47, and a flow rate control valve 48, which are connected in this order. The water outlet end of the flow rate regulating valve 48 communicates with the water inlet end of the ultrapure water container 44, that is, a circulating water path is formed between the ultrapure water container 44, the third feed pump 45, the ultrafiltration device 46, the second three-way joint 47 and the flow rate regulating valve 48. The ultrapure water container 44 is provided with a third high water level switch 441 and a third low water level switch 442, and a third protection water level switch 443.
The second delivery pump 41 is a pressure-activated water pump, and when the pressure of the water path in which the second delivery pump 41 is located is lower than a preset value, the second delivery pump 41 is activated, and when the pressure of the water path in which the second delivery pump 41 is located is higher than the preset value, the second delivery pump 41 stops operating. The third electromagnetic valve 43, the third high water level switch 441, the third low water level switch 442, the third protection water level switch 443, the third delivery pump 45 and the flow regulating valve 48 are all electrically connected with corresponding ports of the controller.
The water level corresponding to the third protection water level switch 443 is lower than the third low water level switch 442, and the third protection water level switch 443 is electrically connected to a corresponding port of the controller. When the controller detects the protection water level signal from the third protection water level switch 443, which indicates that the water level in the ultrapure water container 44 is too low, the controller does not control the third feed pump 45 to be turned on, but controls the pure water container 30 to fill the ultrapure water container 44. When the third protection water level switch acts, the controller controls the third delivery pump to stop running, so that the third delivery pump is prevented from idling without water, and the third delivery pump is prevented from being damaged.
When the controller does not detect the protection water level signal from the third protection water level switch 443, the controller controls the third delivery pump 45 to be started, and the third delivery pump 45 pumps the ultrapure water in the ultrapure water container 44 into the ultrafiltration device 46 for ultrafiltration; the ultrapure water produced from the ultrafiltration device 46 passes through the second three-way valve 47 and the flow rate adjustment valve 48, and then enters the ultrapure water tank 44 again. Thus, the ultrapure water container 44, the third delivery pump 45, the ultrafiltration device 46, the second three-way joint 47 and the flow control valve 48 form an ultrapure water circulation water path, and the ultrapure water in the ultrapure water container 44 repeatedly enters the ultrafiltration device 46 for ultrafiltration, so that the water in the ultrapure water container 44 meets the requirement of ultrapure water. The filtering speed of the ultrapure water circulating water path can be adjusted by adjusting the flow of the flow adjusting valve. The resistivity of the ultrapure water detected by a conductivity meter (model number is CM-230RCT-3200A) is more than 10 megohms, and the ultrapure water can be used for cleaning semiconductor equipment such as silicon wafers, display substrates and the like.
In actual production, the third transfer pump 45 needs 24 hours of uninterrupted operation, so, in one embodiment, the third transfer pump 45 may include a first circulation pump and a second circulation pump connected in parallel, and the third transfer pump 45 is started, that is, the first circulation pump or the second circulation pump is started.
The ultrafiltration device may be a mixed bed, using polishing resin as the filtering material.
In order to avoid idle rotation damage of the second delivery pump 41 under the condition of insufficient water amount, as shown in fig. 2, a second protection water level switch 303 is further disposed in the pure water container 30, a water level corresponding to the second protection water level switch 303 is lower than a water level corresponding to the second low water level switch 302, and the second protection water level switch 303 is electrically connected with a corresponding port of the controller. When the controller detects the protection water level signal from the second protection water level switch 303, it indicates that the water level in the pure water container 30 is too low, at this time, the controller does not control the third electromagnetic valve 43 to be opened, but controls the reverse osmosis treatment device to perform pure water treatment, until the water level in the pure water container 30 is higher than the water level corresponding to the second protection water level switch 303, the controller can control the third electromagnetic valve 43 to be opened. When the second protection water level switch acts, the controller controls the third electromagnetic valve to be switched off, so that the second delivery pump is prevented from being started, and the first delivery pump is prevented from being damaged without water.
The process of supplying water from the pure water tank 30 to the ultrapure water tank 44 is as follows: when the water level in the ultrapure water container 44 is at a low water level, the third low water level switch 442 is actuated, the controller detects a low water level signal from the third low water level switch 442, and then determines whether the second protection water level switch 303 is actuated, if the controller does not detect a protection water level signal from the second protection water level switch 303, the controller controls the third electromagnetic valve 43 to be opened and conducted, at this time, the pressure of the second delivery pump 41 is in a state lower than a preset value due to the low water level in the ultrapure water container 44, the second delivery pump 41 is actuated, and under the action of the second delivery pump 41, the pure water in the pure water container 30 enters the ultrapure water container 44 through the first three-way valve 42 and the third electromagnetic valve 43; when the controller detects a high water level signal from the third high water level switch 441, the controller controls the third electromagnetic valve 43 to be turned off, the pressure of the water path where the second delivery pump 41 is located rises to reach a preset value, and the second delivery pump 41 stops running.
As shown in fig. 2, the third end of the first three-way joint 42 is connected to a first manual valve 491, and when the first manual valve 491 is opened, pure water is supplied to the user. The third end of the second three-way joint 47 is communicated with a second manual valve 492, and when the second manual valve 492 is opened, ultrapure water is supplied to a user.
The utility model discloses water treatment system, reverse osmosis unit are water treatment system's core, and reverse osmosis unit is to carrying out the desalination to the water through the preliminary treatment. In one embodiment, the first booster pump 24 and the first flush solenoid valve 51 are disposed on a support frame of the first stage reverse osmosis unit 25, such that the first booster pump 24, the first flush solenoid valve 51, and the first stage reverse osmosis unit 25 comprise an integrated plant. The second booster pump 27 and the second flushing solenoid valve 52 are both arranged on the support frame of the second stage reverse osmosis device 28, so that the second booster pump 27, the second flushing solenoid valve 52 and the second stage reverse osmosis device 28 constitute an integrated complete equipment. Thus, the installation of the water treatment system is facilitated. In specific installation, various valves and interfaces of various instruments can be arranged on the complete equipment, so that the field maintenance of users is facilitated, and the automatic operation of the water treatment system is realized.
The water after pretreatment (e.g., softening treatment) is pressurized by a booster pump and then enters a reverse osmosis device, and water molecules are separated from soluble ions, organic matters, bacteria and viruses and ultrafine particles by the reverse osmosis device. After being filtered by the reverse osmosis device, more than 97 percent of soluble ions, organic matters, bacteria and viruses and ultrafine particles are discharged into a sewer along with a small part of concentrated water.
The core of the water treatment system is a reverse osmosis device which can normally operate to determine whether the whole water treatment device can normally operate to a great extent, so careful management and careful operation are required.
The first booster pump and the second booster pump are usually multistage vertical centrifugal pumps, and the components in the water path are usually made of stainless steel. The delivery pump usually adopts a water pump matched with the reverse osmosis device, and has the advantages of high insulation level, high operation efficiency and the like, so that the service life of the water treatment system can be prolonged.
The reverse osmosis membrane in the reverse osmosis device can be an aromatic polyamide composite membrane representing the current international highest level of the American DOW company, the membrane is formed by compounding three layers of thin films, the surface layer is made of aromatic polyamide materials and is supported by a microporous polysulfone layer, the membrane can bear high pressure and has good resistance to mechanical tension and chemical erosion, the composite membrane has a large membrane area, the ultra-low working pressure and 99.5% of desalination rate on sodium chloride, calcium chloride and magnesium chloride.
In one embodiment, the control module comprises a PLC and a human-computer interaction panel, wherein the PLC controller adopts Mitsubishi FX2N series PLC, and the human-computer interaction panel adopts a vinylon touch screen. The PLC model is FX2N-64MR, and the man-machine interaction panel model is TK6070 iH.
The types of other main components are shown in table 1:
TABLE 1 Main original device model
Wherein, the water level switch is an integrated water level switch of a high water level switch and a low water level switch.
The corresponding relationship between each electrical component and the PLC in the water treatment system is shown in the following table 2:
table 2 table of correspondence between electrical components and PLC controller
As can be seen from table 2, the pure water supply pump 41 can be inching-controlled. In the process of installing and debugging the water treatment system, the pipeline pressure of the pure water delivery pump 41 is unloaded, the pure water delivery pump 41 is inching controlled, and the water treatment system is convenient to install and debug. In addition, in actual production, the third delivery pump 45 needs 24 hours of uninterrupted operation, so the third delivery pump 45 comprises a first circulating pump and a second circulating pump which are connected in parallel, and the third delivery pump 45 is started, that is, the first circulating pump or the second circulating pump is started. By controlling the first/second circulating pump change-over switch, the first/second circulating pumps can be controlled to alternately operate, so that the service life of each circulating pump is ensured. The first/second circulating pump change-over switch can be a PLC internal soft element, and the first/second circulating pump change-over switch is arranged on the man-machine interaction panel.
Fig. 3 is a schematic diagram of external wiring of the PLC, and as can be seen from fig. 3, the PLC input and output port assignments are respectively shown in table 3 and table 4 below:
TABLE 3 PLC input Port Allocation
TABLE 4 PLC output Port Allocation
In this embodiment, the PLC program instruction table for controlling the operation of the water treatment system is as follows:
it is easily understood that the PLC instruction table for controlling the water treatment system is not limited to the specific instructions listed above, and those skilled in the art can also make adaptive modifications to the instructions according to the performance of the PLC, etc., as long as the functions of the water treatment system of the embodiment of the present invention can be realized.
The water treatment system that this embodiment provided no longer adopts the relay to control, but adopts the controller including control circuit board or PLC to carry out centralized control to each electric components in the water treatment system for control circuit is simpler, has simplified control structure and electric line of walking, has made things convenient for troubleshooting and operation, has improved the reliability and the stability of control, has realized water treatment system's automatic control.
According to the water treatment system provided by the embodiment of the invention, the PLC and the human-computer interaction panel are adopted as main control elements, the operation is simple and easy to understand, the real-time state of each production link of the water treatment system can be easily mastered through the display of the human-computer interaction panel, the register instruction in the PLC is utilized for directly writing and changing the operation parameters of the equipment through the communication between the human-computer interaction panel and the PLC, and the complexity of editing a ladder diagram by a computer or using a handheld programmer is eliminated. In addition, the D instruction of Mitsubishi FX2N series PLC is a register instruction, can modify numerical values as required, and has a power-off saving function.
In the description of the embodiments of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a water treatment system, its characterized in that includes preprocessing device, reverse osmosis treatment device and controller, preprocessing device with reverse osmosis treatment device passes through the pipe connection, the controller with preprocessing device electricity is connected, the controller with reverse osmosis treatment device electricity is connected, controller control preprocessing device carries out the preliminary treatment to the running water, controller control reverse osmosis treatment device carries out reverse osmosis treatment to the water after the preliminary treatment, the controller includes control circuit board or programmable logic controller.
2. The water treatment system of claim 1, wherein the pretreatment device comprises a water storage container for receiving pretreated water, the reverse osmosis treatment device comprises a first delivery pump, a first electromagnetic valve, a first booster pump, a first-stage reverse osmosis device and a pure water container which are sequentially communicated with a water outlet of the water storage container, the water storage container is provided with a first low water level switch and a first high water level switch, and the first low water level switch, the first high water level switch, the first delivery pump, the first electromagnetic valve and the first booster pump are electrically connected with corresponding ports of the controller.
3. The water treatment system according to claim 2, wherein the water storage container is further provided with a first protection water level switch for detecting that the water level in the water storage container is too low, the pure water container is provided with a second low water level switch and a second high water level switch, the first protection water level switch, the second low water level switch and the second high water level switch are all electrically connected with corresponding ports of the controller, when the controller receives the trigger signal of the second low water level switch but does not receive the trigger signal of the first protection water level switch, the controller sends a corresponding start signal to the first delivery pump to start the first delivery pump, and when the controller receives the trigger signal of the second high water level switch, the controller sends a corresponding stop signal to the first delivery pump to stop the first delivery pump.
4. The water treatment system of claim 2, wherein the reverse osmosis treatment device further comprises a pressure switch communicated between the first delivery pump and the first electromagnetic valve and used for triggering when the pressure of a waterway reaches a preset value, the pressure switch is electrically connected with a corresponding port of the controller, and when the controller receives a triggering signal of the pressure switch, the controller sends an opening signal to the first electromagnetic valve to open the first electromagnetic valve.
5. The water treatment system of claim 4, wherein the controller controls the first booster pump to start in a delayed manner, the controller starts a delayed start timing when the controller sends a corresponding start signal to the first delivery pump, and the controller sends a corresponding start signal to the first booster pump to start the first booster pump when the controller receives a trigger signal of the pressure switch and the delayed start timing is over.
6. The water treatment system as claimed in claim 5, wherein the concentrated water end of the first stage reverse osmosis device is communicated with a first flushing solenoid valve, when the controller sends a corresponding starting signal to the first booster pump, the controller simultaneously sends a corresponding opening signal to the first flushing solenoid valve to open the first flushing solenoid valve, and starts the delayed turn-off timing, and the water pumped into the first stage reverse osmosis device by the first booster pump is discharged through the first flushing solenoid valve; when the time delay turn-off timing is finished, the controller sends a corresponding turn-off signal to the first flushing electromagnetic valve to turn off the first flushing electromagnetic valve, and water pumped into the first-stage reverse osmosis device by the first booster pump enters the pure water container after being filtered by the first-stage reverse osmosis device.
7. The water treatment system of claim 2, wherein the reverse osmosis treatment device further comprises a first overpressure switch communicated between the first stage reverse osmosis device and the first booster pump and used for triggering when the pressure of the water circuit reaches a preset value, and the controller sends a prompt message when receiving a triggering signal of the first overpressure switch.
8. The water treatment system according to any one of claims 2 to 7, wherein the reverse osmosis device further comprises a second electromagnetic valve, a second booster pump and a second stage reverse osmosis device which are sequentially communicated between the first stage reverse osmosis device and the pure water container, the reverse osmosis treatment device further comprises a second overpressure switch which is communicated between the second booster pump and the second stage reverse osmosis device and is used for triggering when the pressure of a water path reaches a preset value, a concentrated water end of the second stage reverse osmosis device is communicated with a second flushing electromagnetic valve, and the second electromagnetic valve, the second booster pump, the second overpressure switch and the second flushing electromagnetic valve are electrically connected with corresponding ports of the controller.
9. The water treatment system of claim 8, wherein the pre-treatment device comprises a softening treatment device for providing soft water to the water storage container, the softening treatment device comprises a tap water booster pump, a softening device and a soft water solenoid valve which are sequentially communicated, a water inlet end of the tap water booster pump receives tap water, the soft water solenoid valve is communicated with the water storage container, the tap water booster pump and the soft water solenoid valve are both electrically connected with corresponding ports of the controller,
when the controller receives a trigger signal of the first low water level switch, the controller sends a corresponding starting signal to the tap water booster pump to start the tap water booster pump, and sends a corresponding opening signal to the soft water electromagnetic valve to start the soft water electromagnetic valve;
and when the controller receives the trigger signal of the first high water level switch, the controller sends a corresponding stop signal to the tap water booster pump to stop the tap water booster pump, and sends a corresponding turn-off signal to the soft water electromagnetic valve to turn off the soft water electromagnetic valve.
10. The water treatment system according to claim 8, further comprising an ultrapure water treatment device, wherein the ultrapure water treatment device comprises a second delivery pump, a third electromagnetic valve, an ultrapure water container, a third delivery pump, an ultrafiltration device and a flow regulating valve which are communicated in sequence, a water inlet end of the second delivery pump is communicated with the ultrapure water container, a water outlet end of the flow regulating valve is communicated to a water inlet end of the ultrapure water container, the ultrapure water container is further provided with a second protection water level switch for detecting that the water level in the ultrapure water container is too low, the ultrapure water container is provided with a third low water level switch, a third high water level switch and a third protection water level switch for detecting that the water level in the ultrapure water container is too low, the third electromagnetic valve, the third delivery pump, the second protection water level switch, the third low water level switch, And the third high water level switch and the third protection water level switch are electrically connected with corresponding ports of the controller.
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| CN201921438317.8U CN210457712U (en) | 2019-08-30 | 2019-08-30 | Water treatment system |
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| CN201921438317.8U CN210457712U (en) | 2019-08-30 | 2019-08-30 | Water treatment system |
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Effective date of registration: 20210409 Address after: 100015 No. 10, Jiuxianqiao Road, Beijing, Chaoyang District Patentee after: BEIJING ASASHI ELECTRONIC MATERIALS Co.,Ltd. Address before: 100015 No. 10, Jiuxianqiao Road, Beijing, Chaoyang District Patentee before: BOE TECHNOLOGY GROUP Co.,Ltd. Patentee before: BEIJING ASASHI ELECTRONIC MATERIALS Co.,Ltd. |