CN211706451U - RO reverse osmosis membrane self-cleaning equipment - Google Patents
RO reverse osmosis membrane self-cleaning equipment Download PDFInfo
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- CN211706451U CN211706451U CN202020072895.0U CN202020072895U CN211706451U CN 211706451 U CN211706451 U CN 211706451U CN 202020072895 U CN202020072895 U CN 202020072895U CN 211706451 U CN211706451 U CN 211706451U
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Abstract
The utility model relates to a RO reverse osmosis membrane self-cleaning equipment, including the raw water pump, the pre treatment device, reverse osmosis unit and RO reverse osmosis produce the water tank, the output and the pre treatment device of raw water pump are connected, the pre treatment device is connected with reverse osmosis unit, be connected with the anterior segment on reverse osmosis unit's the anterior segment output pipeline and wash the discharge valve, its output gos deep into to the anterior segment and washes in the discharge port, be connected with middle intake flush valve in the middle of reverse osmosis unit's the top on the input tube, be connected with dense water on reverse osmosis unit's the top back end output pipeline and discharge the flush valve, its output gos deep into to the back end and washes in the discharge port, reverse osmosis unit's the total output pipeline in bottom and RO reverse osmosis produce the water tank and be connected, RO reverse osmosis produces the. The utility model discloses an automatic rinse-system of reverse osmosis reduces chemical agent and washs the number of times and avoid influencing reverse osmosis membrane's product water quality of water, can effectively prolong reverse osmosis membrane life.
Description
Technical Field
The utility model relates to a water treatment technical field especially relates to a RO reverse osmosis membrane self-cleaning equipment.
Background
The RO equipment in the market at present can cause pollution because of organic colloid, calcium and magnesium scale deposit, tiny suspended solid scheduling problem after a period of time of operation, the flow that produces water drops, and the pressure of intaking rises, and the pressure differential of intaking and dense water outlet risees, phenomenon such as conductivity risees, need shut down for this purpose and carry out chemical agent forced circulation washing, can influence reverse osmosis membrane's product water quality and life after frequent washing, increase system operation cost, can cause the operation trouble of follow-up process equipment even because of product water quality problem sometimes.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a RO reverse osmosis membrane self-cleaning equipment to solve the problem that meets in the above-mentioned background art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an RO reverse osmosis membrane automatic cleaning device comprises a raw water pump, a pretreatment device, a reverse osmosis device and an RO reverse osmosis water production tank, wherein the output end of the raw water pump is connected with the pretreatment device through a first automatic discharge valve, a high-pressure pump is arranged on a conveying pipeline of the pretreatment device and is connected with the reverse osmosis device through a second automatic discharge valve, a front section flushing discharge valve is connected on a front section output pipeline of the reverse osmosis device, the output end of the front section flushing discharge valve extends into the front section flushing discharge port, a middle water inlet flushing valve is connected on a middle input pipeline at the top of the reverse osmosis device, a concentrated water discharge flushing valve is connected on a back section output pipeline at the top of the reverse osmosis device, the output end of the concentrated water discharge flushing valve extends into the back section flushing discharge port, and a bottom total output pipeline of the reverse osmosis device is connected with a top liquid inlet pipe of the RO reverse osmosis water production tank through a third automatic discharge valve, and the bottom output pipeline of the RO reverse osmosis water production tank is connected with a flushing pump, and the flushing pump is connected with the top middle input pipeline of the reverse osmosis device through a fourth automatic discharge valve.
In the scheme, an electric ball valve is connected in parallel with the concentrated water discharge flushing valve on the output pipeline at the rear section of the top of the reverse osmosis device.
In the scheme, a first pressure sensor is installed on a front section output pipeline of the reverse osmosis device, a second pressure sensor is installed on a middle top input pipeline of the reverse osmosis device, and a third pressure sensor is installed on a rear top output pipeline of the reverse osmosis device.
In the above scheme, install first flow sensor on reverse osmosis unit's the top back end output pipeline, install second flow sensor and first conductivity sensor on the top inlet liquid pipeline of RO reverse osmosis product water tank, install second conductivity sensor on pre-treatment facilities's the pipeline.
Compared with the prior art, the beneficial effects of the utility model are that: performing a process flushing stage, performing low-pressure quick cleaning when the pollutants are not completely combined with the surface of the RO membrane, and flushing the pollutants out of the RO membrane system in time; when reverse osmosis unit shut down or received shut down signal, produce reverse osmosis in water passes through the flush pump pressurization and squeezes into reverse osmosis unit from reverse osmosis system middle input pipeline, respectively to the front and back low pressure quick washing membrane surface simultaneously, can effectively wash the interior organic colloid pollutant of anterior segment reverse osmosis membrane and the interior calcium magnesium scale deposit pollutant of back end reverse osmosis membrane, leave clean pure water in the membrane simultaneously, even do not operate in very long a period at reverse osmosis unit like this, also can guarantee the interior dry and clean of RO membrane, prolong RO reverse osmosis membrane's chemical cleaning cycle and life greatly. Through the automatic reverse osmosis flushing system, the cleaning times of chemical agents are reduced, the influence on the water quality of the produced water of the reverse osmosis membrane is avoided, the service life of the reverse osmosis membrane can be effectively prolonged by 50-100%, namely the service life is prolonged by 2 years originally, the service life can be prolonged by 1-2 years through modification, the use cost is greatly saved, and the real-time monitoring can be carried out on the pressure difference, the flow or the conductivity of each conveying pipeline.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
reference numbers in the figures: 1-raw water pump; 11-a first automatic discharge valve; 2-pretreatment equipment; 3-a high pressure pump; 4-a reverse osmosis unit; 41-front section flushing discharge valve; 42-intermediate water inlet flushing valve; 43-concentrated water discharge flushing valve; 44-a first pressure sensor; 45-a second pressure sensor; 46-a third pressure sensor; 47-a second automatic drain valve; 48-an electric ball valve; 5-RO reverse osmosis water producing tank; 51-a third automatic drain valve; 6-a washing pump; 61-a fourth automatic drain valve; 7-front section flushing discharge port; 8-rear end flushing discharge port; 91-a first flow sensor; 92-a second flow sensor; 93-a first conductivity sensor; 94-second conductivity sensor.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, an automatic cleaning device for RO reverse osmosis membrane comprises a raw water pump 1, a pretreatment device 2, a reverse osmosis device 4 and an RO reverse osmosis water production tank 5, wherein water in the raw water tank requiring water treatment is connected with the raw water pump 1 through a pipeline, the output end of the raw water pump 1 is connected with the pretreatment device 2 through a first automatic discharge valve 11, and the pretreatment device 2 comprises a multi-media filter, an activated carbon filter and a cartridge filter, and is used for pretreating the water source in the raw water tank.
The high-pressure pump 3 is installed on a conveying pipeline of the pretreatment device 2, the high-pressure pump 3 is connected with the reverse osmosis device 4 through the second automatic discharge valve 47, the reverse osmosis device 4 adopts the existing device and is generally automatically controlled by a PLC, a cleaning program of the reverse osmosis device 4 is divided into three sub-programs, and the cleaning programs are respectively a quick low-pressure washing program for starting up, a quick low-pressure washing program for process accumulation and segmentation and a quick low-pressure replacement cleaning program for shutdown, so that scaling or fouling and blocking of the reverse osmosis membrane can be effectively controlled. The reverse osmosis device is provided with 1 set of reverse osmosis device with 15m3/h of output, each set adopts a first-stage three-stage arrangement, wherein each set comprises 2 pressure containers in one section, 1 pressure container in two sections and 1 pressure container in three sections, and each pressure container is internally provided with 4 40' long membrane elements, 4 pressure containers and 16 membrane elements in total. The reverse osmosis membrane element adopts an anti-pollution low-pressure composite membrane, and can be BW30-400 type reverse osmosis membrane element produced by the United states DOW company.
Unlike the existing reverse osmosis device 4: a front-section flushing discharge valve 41 is connected to a front-section output pipeline of the reverse osmosis device 4, the output end of the front-section flushing discharge valve 41 extends into the front-section flushing discharge port 7, a first pressure sensor 44 is mounted on the front-section output pipeline of the reverse osmosis device 4, and the first pressure sensor 44 is used for monitoring the pressure value of inlet water in real time; the middle input pipeline at the top of the reverse osmosis device 4 is connected with a middle water inlet flushing valve 42, the middle input pipeline at the top of the reverse osmosis device 4 is provided with a second pressure sensor 45, and the second pressure sensor 45 is used for monitoring the middle pressure value of reverse osmosis in real time; be connected with concentrated water discharge flushing valve 43 on reverse osmosis unit 4's top back end output pipeline, the output of concentrated water discharge flushing valve 43 is deepened to the back end and is washed in the discharge port 8 to install third pressure sensor 46 on reverse osmosis unit 4's top back end output pipeline, third pressure sensor 46 is used for the pressure value of real-time supervision concentrated water export. The front flushing discharge valve 41, the middle inlet flushing valve 42, the concentrated water discharge flushing valve 43, the first pressure sensor 44, the second pressure sensor 45 and the third pressure sensor 46 are all controlled by a PLC and display collected pressure data of corresponding pipelines.
Preferably, an electric ball valve 48 is connected in parallel with the concentrated water discharge flushing valve 43 on the top rear section output pipeline of the reverse osmosis device 4, and the discharge of the pure water can be controlled through the electric ball valve 48 or the concentrated water discharge flushing valve 43. The top feed liquor union coupling of water tank 5 is produced with RO reverse osmosis through third automatic discharge valve 51 on reverse osmosis unit's 4 the total output pipeline in bottom, and flush pump 6 is being connected to RO reverse osmosis unit's 5 bottom output pipeline, and flush pump 6 is connected through input pipeline in the middle of fourth automatic discharge valve 61 and reverse osmosis unit's 4 top for the pure water that will produce water tank 5 through RO reverse osmosis is carried for reverse osmosis unit 4 once more and is carried out discharge after the water treatment.
In the scheme, the adopted pipeline connection mode can be hot melt gluing, threaded sleeve joint and welding, and according to actual needs, the pipeline connection mode can be realized only if the pipeline connection mode is water-tight when the pipeline connection mode is operated.
As a preferable scheme, a first flow sensor 91 is installed on a top rear-section output pipeline of the reverse osmosis device 4, the first flow sensor 91RO is used for monitoring the flow value of the concentrated water in real time, a second flow sensor 92 and a first conductivity sensor 93 are installed on a top liquid inlet pipeline of the reverse osmosis water production tank 5, the second flow sensor 92 is used for monitoring the flow value of the produced water in real time, the first conductivity sensor 93 is used for monitoring the conductivity of the produced water in real time, a second conductivity sensor 94 is installed on a delivery pipeline of the pretreatment equipment 2, and the second conductivity sensor 94 is used for monitoring the conductivity of the inlet water in real time. The first flow sensor 91, the second flow sensor 92, the first conductivity sensor 93 and the second conductivity sensor 94 are all automatically controlled by a PLC and display the collected flow data and conductivity data of the corresponding pipes.
When the method is implemented, firstly, the raw water pump 1 is started when the PLC reverse osmosis system receives an operation signal, the first automatic discharge valve 11 is opened, tap water enters the pretreatment equipment 2 for low-pressure quick cleaning, the RO membrane can be in a preheating state, the first automatic discharge valve 11 is slowly closed after 30 seconds, meanwhile, the high-pressure pump 3 is started, and the raw water stably enters a working state after the valve of the first automatic discharge valve 11 is slowly closed; when the running state is entered, the PLC module collects signals of differential pressure, flow and conductivity in real time in the reverse osmosis device 4, and simultaneously starts to enter running timing time, when the differential pressure, the flow or the conductivity and the accumulated timing time reach 60min, the process flushing stage is automatically carried out, the high-pressure pump 3 is closed, a valve of a concentrated water discharge flushing valve 43 at a concentrated water outlet is slowly opened, the process flushing is carried out, low-pressure quick cleaning is carried out when the pollutants are not completely combined with the surface of the RO membrane, and the pollutants are timely flushed out of the RO membrane system; finally, when the reverse osmosis device 4 is shut down or receives a shutdown signal, the high-pressure pump 3 and the raw water pump 1 are closed at the moment, the middle inlet water flushing 42 is opened, the front section flushing discharge valve 41 and the rear end concentrated water discharging flushing valve 43 in the reverse osmosis system are opened, the flushing pump 6 is opened at the same time, reverse osmosis produced water is pressurized by the flushing pump 6 and is pumped into the reverse osmosis device 4 from a middle input pipeline of the reverse osmosis system, the surfaces of the membranes are flushed forwards and backwards simultaneously and rapidly at low pressure, organic colloid pollutants in the front section reverse osmosis membrane and calcium and magnesium scaling pollutants in the rear section reverse osmosis membrane can be effectively flushed, and clean pure water is left in the membranes, so that even if the reverse osmosis device 4 does not operate for a long time, the inside of the reverse osmosis membrane can be guaranteed to be dry and clean, and the chemical cleaning.
The utility model discloses an automatic rinse-system of reverse osmosis reduces chemical agent and washs the number of times, avoids influencing reverse osmosis membrane's product water quality of water, can effectively prolong reverse osmosis membrane life 50-100%, and original life is in 2 years promptly, can prolong 1-2 years through the transformation, practices thrift use cost greatly to can also carry out real-time supervision to each pipeline's pressure differential, flow or conductivity.
The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (4)
1. The utility model provides a RO reverse osmosis membrane self-cleaning equipment which characterized in that: comprises a raw water pump (1), a pretreatment device (2), a reverse osmosis device (4) and an RO reverse osmosis water production tank (5), wherein the output end of the raw water pump (1) is connected with the pretreatment device (2) through a first automatic discharge valve (11), a high-pressure pump (3) is arranged on a conveying pipeline of the pretreatment device (2), the high-pressure pump (3) is connected with the reverse osmosis device (4) through a second automatic discharge valve (47), a front section flushing discharge valve (41) is connected on a front section output pipeline of the reverse osmosis device (4), the output end of the front section flushing discharge valve (41) extends into a front section flushing discharge port (7), a middle water inlet flushing valve (42) is connected on a middle input pipeline at the top of the reverse osmosis device (4), and a concentrated water discharge flushing valve (43) is connected on a rear section output pipeline at the top of the reverse osmosis device (4), the output end of the concentrated water discharge flushing valve (43) extends into a rear section flushing discharge port (8), a bottom main output pipeline of the reverse osmosis device (4) is connected with a top liquid inlet pipe of the RO reverse osmosis water production tank (5) through a third automatic discharge valve (51), a bottom output pipeline of the RO reverse osmosis water production tank (5) is connected with a flushing pump (6), and the flushing pump (6) is connected with a top middle input pipeline of the reverse osmosis device (4) through a fourth automatic discharge valve (61).
2. The automatic cleaning equipment for the RO reverse osmosis membrane according to claim 1, characterized in that: and an electric ball valve (48) is connected with the concentrated water discharge flushing valve (43) in parallel on the output pipeline at the rear section of the top of the reverse osmosis device (4).
3. The automatic cleaning equipment for the RO reverse osmosis membrane according to claim 1, characterized in that: install first pressure sensor (44) on the anterior segment output pipeline of reverse osmosis unit (4), install second pressure sensor (45) on the middle input pipeline in top of reverse osmosis unit (4), install third pressure sensor (46) on the top back end output pipeline of reverse osmosis unit (4).
4. The automatic cleaning equipment for the RO reverse osmosis membrane according to claim 1, characterized in that: install first flow sensor (91) on the top back end output pipeline of reverse osmosis unit (4), install second flow sensor (92) and first conductivity sensor (93) on the top inlet conduit of RO reverse osmosis product water tank (5), install second conductivity sensor (94) on the pipeline of preprocessing equipment (2).
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| CN202020072895.0U CN211706451U (en) | 2020-01-14 | 2020-01-14 | RO reverse osmosis membrane self-cleaning equipment |
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| CN202020072895.0U CN211706451U (en) | 2020-01-14 | 2020-01-14 | RO reverse osmosis membrane self-cleaning equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101812A (en) * | 2021-05-11 | 2021-07-13 | 山东鲁东环保科技有限公司 | Constant temperature intelligence membrane element antisludging agent dynamic simulation experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101812A (en) * | 2021-05-11 | 2021-07-13 | 山东鲁东环保科技有限公司 | Constant temperature intelligence membrane element antisludging agent dynamic simulation experiment device |
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