CN117383769A - Pure water supply system for air cooler - Google Patents
Pure water supply system for air cooler Download PDFInfo
- Publication number
- CN117383769A CN117383769A CN202311690698.XA CN202311690698A CN117383769A CN 117383769 A CN117383769 A CN 117383769A CN 202311690698 A CN202311690698 A CN 202311690698A CN 117383769 A CN117383769 A CN 117383769A
- Authority
- CN
- China
- Prior art keywords
- contactor
- valve
- manual
- tank
- manual contactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 229920000742 Cotton Polymers 0.000 claims abstract description 117
- 239000002699 waste material Substances 0.000 claims abstract description 67
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 64
- 238000011010 flushing procedure Methods 0.000 claims abstract description 53
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims description 43
- 238000011001 backwashing Methods 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 description 25
- 238000010586 diagram Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a pure water supply system for an air cooler, and belongs to the technical field of air cooler water supply systems. The filter comprises a PP cotton filter module, wherein the output end of the PP cotton filter module is connected to a reverse osmosis filter through a reverse osmosis pressure pump; the waste discharge end of the reverse osmosis filter is connected to a waste discharge pipe; an opening valve is arranged on the waste discharge pipe; the water outlet end of the reverse osmosis filter is connected to the pure water tank; the pure water tank is connected to a pure water supply end of the air cooler through a pure water pump; the PP cotton filtering module comprises a filter element assembly, wherein the filter element assembly comprises two shunt tubes, one end of each shunt tube is closed, and the other end of each shunt tube is a flange end; each shunt tube is provided with a PP cotton filter element group and a first valve body; the pure water supply system for the air cooler can perform back flushing on line, and can ensure the stability of water inflow of the raw water tank.
Description
Technical Field
The invention particularly relates to a pure water supply system for an air cooler, and belongs to the technical field of air cooler water supply systems.
Background
The evaporative condenser is a core component of the evaporative air cooler, when the evaporative condenser works, a large amount of purified water is needed to exchange temperature of a flow process, the purified water is produced in the market, the traditional RO membrane reverse osmosis water producing equipment is generally composed of a PP cotton filter module and an RO membrane reverse osmosis module, a water source in a raw water tank enters the PP cotton filter module for filtering after preliminary filtering treatment, sequentially passes through a PP cotton filter element of 5 mu m and a PP cotton filter element of 1 mu m, finally enters the RO membrane reverse osmosis module for reverse osmosis treatment, the traditional PP cotton filter module is short in working time, a filter membrane is blocked, shutdown back flushing or replacement is needed after blocking, normal pure water supply of the air cooler is easily affected, and in order to protect a subsequent filter membrane during back flushing, the pure water is mostly adopted for back flushing, so that the pure water is easy to be wasted; in addition, when the existing raw water tank is used for water inflow, a manual control water pump is used for water inflow, and once a control fault occurs, the raw water tank is subjected to water interruption, so that the water pump suction condition of RO membrane reverse osmosis water production equipment is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a pure water supply system for an air cooler, which can monitor the blockage condition of a PP cotton filter module in real time, can perform back flushing on line, and can ensure the stability of water inflow of a raw water tank.
The pure water supply system for the air cooler comprises a PP cotton filter module, wherein the output end of the PP cotton filter module is connected to a reverse osmosis filter through a reverse osmosis pressure pump; the waste discharge end of the reverse osmosis filter is connected to a waste discharge pipe; an opening valve is arranged on the waste discharge pipe; the water outlet end of the reverse osmosis filter is connected to the pure water tank; the pure water tank is connected to a pure water supply end of the air cooler through a pure water pump; when the filter is in operation, the water outlet pipe of the raw water tank sends raw water into the PP cotton filter module, after the raw water is filtered by the PP cotton filter module, the raw water is pressurized by the reverse osmosis pressure pump and then sent into the reverse osmosis filter for reverse osmosis filtration treatment; the pure water filtered by the reverse osmosis filter is sent into a pure water tank; the waste discharge end of the reverse osmosis filter discharges waste water; the waste discharge resistance of the reverse osmosis filter is regulated through an opening valve on the waste discharge pipe, so that the pressure of the input end of the reverse osmosis filter is ensured;
the PP cotton filtering module comprises a filter element assembly, wherein the filter element assembly comprises two shunt tubes, one end of each shunt tube is closed, and the other end of each shunt tube is a flange end; each shunt tube is provided with a PP cotton filter element group and a first valve body; the other end of the first valve body is connected to the water inlet pipe; the other ends of the two PP cotton filter element groups are respectively connected to a collecting pipe; the collecting pipe is connected to the collecting tank through a second valve body; the flange end of the shunt tube is connected to the output end of the hydraulic control one-way valve, and the input end of the hydraulic control one-way valve is connected to the independent PP cotton filter element; the other end of the independent PP cotton filter element is connected to the input end of the first one-way valve; the output end of the first one-way valve is connected to the liquid collecting tank; the bottom of the liquid collection tank is connected to the input end of the reverse osmosis filter through a reverse osmosis pressure pump; the collecting pipe is connected in parallel with a second one-way valve between the PP cotton filter element group and the second valve body; the input end of the second one-way valve is connected to a backwash pipeline; the two backwashing pipelines are connected to two output ends of the three-way valve; the input end of the three-way valve is connected to a backwashing tank through a backwashing pressure pump; the back flushing tank is connected with the waste discharge pipe; the waste liquid treatment assembly is characterized by further comprising a waste liquid treatment assembly, wherein the waste liquid discharge pipe is connected to a transition pipe, one end of the transition pipe is closed, and the other end of the transition pipe is connected to a waste liquid discharge valve; the waste liquid treatment assembly comprises a back flushing tank, and a third valve body is arranged at the bottom of the back flushing tank; the bottom of the third valve body is connected to the precipitation tank; a fourth valve body is arranged at the bottom of the precipitation tank; the fourth valve body is connected to the transition pipe; the fourth valve body is arranged between the waste discharge pipe and the waste discharge valve; the upper part of the inner side of the back flushing tank is provided with a liquid level meter; the top of the back flushing tank is connected to a high-level alkali liquor storage tank through a metering valve; the bottom of the backwashing tank is provided with a backwashing pipe; a recoil valve is arranged on the recoil pipe; the back flushing valve is connected to the back flushing pressure pump, and a control oil port of the hydraulic control one-way valve is connected to an oil pressure pipeline through an electromagnetic valve; the reverse osmosis pressure pump, the opening valve, the first valve body, the second valve body, the electromagnetic valve, the three-way valve, the back flush pressure pump, the waste discharge valve, the third valve body, the fourth valve body, the liquid level meter, the metering valve and the back flush valve are connected to the controller.
The working process of the PP cotton filter module is as follows:
during normal operation, the raw water is pressurized and fed into the water inlet pipe of the PP cotton filter module by the water outlet pipe of the raw water tank, the raw water in the water inlet pipe respectively enters the split pipes through the first valve body and sequentially enters each filter element of the PP cotton filter element group through the split pipes in a split manner, after filtration is completed, filtered water enters the collecting pipe and is fed into the collecting tank through the collecting pipe, and the filtered water in the collecting tank waits for reverse osmosis filter treatment; at this time, due to the unidirectionality of the hydraulic control one-way valve, the first one-way valve and the second one-way valve, the uniqueness of the advancing path is always maintained when raw water passes through the PP cotton filter element group;
the two groups of PP cotton filter modules are used for carrying out back flushing alternately at regular intervals, when in back flushing, a back flushing pressure pump pumps back flushing water from a back flushing tank and pressurizes the back flushing water, then a three-way valve is controlled to enable a back flushing pipeline of the PP cotton filter element group to be flushed to be communicated with the back flushing pressure pump, a first valve body and a second valve body communicated with the PP cotton filter element group are closed, at the moment, back flushing water enters a collecting pipe through a second one-way valve, back flushing water enters the PP cotton filter element group through the collecting pipe, and then an electromagnetic valve is opened, so that pressure oil of an oil pressure pipeline is sent to a control oil port of a hydraulic control one-way valve; the pressure oil pushes up the unidirectional valve core of the hydraulic control unidirectional valve, at the moment, two ends of the hydraulic control unidirectional valve are communicated with each other, and after the high-pressure backwash water backwash the PP cotton filter element group, backwash water enters into the independent PP cotton filter element; after the back flush water is filtered by the independent PP cotton filter element, the back flush water is sent to the liquid collecting tank by the first one-way valve, and the filtered water in the liquid collecting tank waits for the reverse osmosis filter to carry out reverse osmosis filtration treatment;
the anti-flushing water is supplied from the waste discharge end of the reverse osmosis filter, and the specific process is as follows:
firstly, closing a waste discharge valve, and discharging waste water at the waste discharge end of the reverse osmosis filter; the waste water enters the transition pipe through the waste discharge pipe, the waste water sequentially passes through the fourth valve body, the sedimentation tank and the third valve body, finally enters the back flushing tank, the water level in the back flushing tank continuously rises, when the liquid level gauge detects that the water level reaches the set height, the controller gives a signal to the waste discharge valve, at the moment, the waste discharge valve is opened, and the waste water in the back flushing tank is discharged; the waste discharge time is delayed, when the waste discharge time is up, the waste discharge valve is closed, at the moment, the waste water enters the back flush tank again to accumulate, the water level in the back flush tank continuously rises, when the liquid level gauge detects that the water level reaches the set height, the controller gives a signal to the fourth valve body, the fourth valve body is closed, meanwhile, the waste discharge valve is opened, then, the controller triggers the metering valve, and a high-level alkali liquid storage tank continuously drops a certain amount of alkali liquid into the back flush tank; fully mixing the alkali liquor with the wastewater in the backwashing tank, reacting calcium and magnesium plasma in the wastewater with the alkali liquor to generate carbonate precipitation, and closing a third valve body when the reaction time is up, so that a settled precipitation layer is trapped in the precipitation tank; isolating the treated wastewater in a backwashing tank and waiting for backwashing application; then, opening a fourth valve body, and discharging the precipitated wastewater through a transition pipe; when the back flushing water in the back flushing tank is applied, a new round of back flushing tank water inlet treatment is carried out.
Further, the hydraulic control one-way valve, the independent PP cotton filter element and the first one-way valve are connected through a flange; when the independent PP cotton filter element is required to be disassembled and cleaned or replaced, the bolt and the nut can be directly screwed off, the independent PP cotton filter element is separated from the hydraulic control one-way valve and the first one-way valve, and after the independent PP cotton filter element is disassembled, the split pipe and the liquid collecting tank can be sealed due to the unidirectionality of the hydraulic control one-way valve and the first one-way valve; at this time, the PP cotton filter module can still work on line; when the independent PP cotton filter element finishes external cleaning or a new independent PP cotton filter element is taken out, the independent PP cotton filter element is installed between the shunt pipe and the liquid collecting tank.
Further, the PP cotton filter module comprises a PP cotton filter module with the diameter of 5 mu m and a PP cotton filter module with the diameter of 1 mu m; the output end of the back flushing pressure pump is connected with two groups of three-way valves in parallel, and one group of three-way valves is connected to a PP cotton filtering module with the thickness of 5 mu m; the other group of three-way valves is connected to a1 μm PP cotton filtration module. The effluent of the raw water tank is initially filtered through the front end, enters a PP cotton filter module with the diameter of 5 mu m for filtering, then enters a PP cotton filter module with the diameter of 1 mu m for filtering, and the filtrate enters a liquid collecting tank for waiting for reverse osmosis treatment by a reverse osmosis filter.
Further, the closed end of the shunt tube is embedded with a pressure transmitter; the pressure transmitter is connected to the controller; monitoring the pressure of the shunt pipe in real time through a pressure transmitter, and sending monitoring data to a controller, so that the pressure of the input end of the PP cotton filter element group is monitored, and a back flushing flow is triggered once the pressure reaches a set value; when one group of PP cotton filter modules are back-flushed, and the pressure of the other group of PP cotton filter modules reaches a set pressure value, the back-flushed PP cotton filter modules are responded after back flushing is completed.
Further, the input end of the PP cotton filtering module is connected to the primary filter; the primary filter is connected to the raw water tank; the raw water tank is connected to an underground water well through a first water inlet pump; the waste discharge valve is connected to the fire water tank; the output end of the first water inlet pump is connected to the fire water tank through a branch pipe valve; the raw water tank is also connected with a tap water pipe network through a second water inlet pump; the power supply ends of the first water inlet pump and the second water inlet pump are connected to a power supply control board; raw water in the raw water tank is pressurized and then sent to a primary filter for filtration, then enters a PP cotton filtration module for filtration, and waste water after being treated by the reverse osmosis filter is sent to a fire water tank through a waste water discharge valve for fire water; the power supply control board controls the first water inlet pump and the second water inlet pump to work so as to pump tap water or groundwater to the original water tank.
Further, the power control board comprises a three-phase four-wire system power supply; the three-phase four-wire system power supply is connected to a total manual contactor through a circuit breaker, and the total manual contactor is connected to a first thermal relay and a second thermal relay through a first branch manual contactor and a second branch manual contactor respectively; the first thermal relay and the second thermal relay are connected to the power supply ends of the first water inlet pump and the second water inlet pump; the two phase lines of the three-phase four-wire system power supply are connected with a first control module in parallel; a second control module is arranged between one phase line and a zero line of the three-phase four-wire system power supply;
the first control module comprises a single-pole three-throw switch; the input end of the single-pole three-throw switch is connected to a phase line, the middle output end of the single-pole three-throw switch is suspended, and the other two output ends are respectively connected with a first middle relay and a second middle relay; the first intermediate relay and the second intermediate relay are connected to another phase line; the normal open end of the first intermediate relay, the normal closed end of the second intermediate relay and the control loop of the total manual contactor are connected in series and then connected to two phase lines; the normally-closed end of the first intermediate relay, the normally-open end of the second intermediate relay and the control loop of the total automatic contactor are connected in series and then connected to two phase lines;
the second control module comprises a third intermediate relay and a fourth intermediate relay; the third intermediate relay and the fourth intermediate relay are connected with the normally-closed ends of the first thermal relay and the second thermal relay respectively in series and then connected to the phase line and the zero line; the normal open ends of the first thermal relay and the second thermal relay are respectively connected with a first fault indicator lamp or a second fault indicator lamp in series and then connected to the phase line and the zero line;
the first branch manual contactor normal open end, the first branch manual contactor control loop, the third intermediate relay normal open end and the first normally closed switch are connected in series and then connected to the phase line and the zero line; the normally open end of the first manual dividing contactor is connected with a first normally open switch in parallel; the second normal open end of the second sub manual contactor, the second sub manual contactor control loop, the fourth intermediate relay normal open end and the second normally closed switch are connected in series and then connected to the phase line and the zero line; the normally open end of the second manual contactor is connected with a second normally open switch in parallel;
the three-phase four-wire system power supply is connected to a third manual contactor and a fourth manual contactor through a total automatic contactor; the third manual contactor and the fourth manual contactor are connected to the input ends of the first thermal relay and the second thermal relay in parallel;
the output end of the total automatic contactor is connected to the power supply end of the frequency converter; the output end of the frequency converter is connected to a fifth manual contactor and a sixth manual contactor; the fifth manual contactor and the sixth manual contactor are connected to the input ends of the first thermal relay and the second thermal relay in parallel; the control end of the frequency converter is connected to the controller;
after the control loop of the third manual contactor and the normally closed end of the fourth manual contactor are connected in series, one end of the control loop of the third manual contactor is connected to the IO port of the controller, and the other end of the control loop of the third manual contactor is grounded through the normally open end of the third intermediate relay; after the control loop of the fourth manual contactor is connected with the normally closed end of the third manual contactor in series, one end of the control loop of the fourth manual contactor is connected to the IO port of the controller, and the other end of the control loop of the fourth manual contactor is grounded through the normally open end of the third intermediate relay; after the control loop of the fifth manual contactor and the normally closed end of the sixth manual contactor are connected in series, one end of the control loop of the fifth manual contactor is connected to the IO port of the controller, and the other end of the control loop of the fifth manual contactor is grounded through the normally open end of the fourth intermediate relay; and after the control loop of the sixth manual contactor is connected in series with the normally closed end of the fifth manual contactor, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the fourth intermediate relay.
Compared with the prior art, the pure water supply system for the air cooler can monitor the blockage condition of the PP cotton filter module in real time, can perform back flushing on the PP cotton filter module on line, and can ensure the water inlet stability of the raw water tank by performing various control modes on the first water inlet pump and the second water inlet pump when the raw water tank is fed.
Drawings
FIG. 1 is a schematic diagram of the PP cotton filtration module, reverse osmosis filter and backwash pipeline connection of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the PP cotton filter module of the present invention.
FIG. 3 is a schematic view of a backwash water acquisition module according to the present invention.
Fig. 4 is a schematic diagram of a structure of a pressure transmitter connected with a PP cotton filter module.
FIG. 5 is a schematic diagram showing the overall structure of the pure water supply system of the present invention.
Fig. 6 is a schematic diagram of connection of a three-phase four-wire system power supply, a first control module and a second control module according to the present invention.
Fig. 7 is a schematic diagram of the three-phase four-wire system power supply, each contactor and the inverter connection of the present invention.
Fig. 8 is a schematic diagram of the connection between the controller and the frequency converter according to the present invention.
Reference numerals: 1. the PP cotton filter module comprises 2 parts of a reverse osmosis pressure pump, 3 parts of a reverse osmosis filter, 4 parts of a waste discharge pipe, 5 parts of an opening valve, 6 parts of a pure water tank, 7 parts of a pure water pump, 8 parts of a shunt pipe, 9 parts of a PP cotton filter element group, 10 parts of a first valve body, 11 parts of a water inlet pipe, 12 parts of a collecting pipe, 13 parts of a second valve body, 14 parts of a collecting tank, 15 parts of a hydraulic control one-way valve, 16 parts of an independent PP cotton filter element, 17 parts of a first one-way valve, 18 parts of a second one-way valve, 19 parts of a backwashing pipeline, 20 parts of a three-way valve, 21 parts of a backwashing pressure pump, 22 parts of a backwashing tank, 23 parts of a transition pipe, 24 parts of a waste discharge valve, 25 parts of a third valve body, 26 parts of a settling tank, 27 parts of a fourth valve body, 28 parts of a liquid level gauge, 29 parts of a metering valve, 30 parts of an alkali lye storage tank, 31 parts of a backwashing pipe, 32 parts of a backwashing valve, 33 parts of an oil pressure pipeline, 34 parts of a pressure transmitter, 35 parts of a primary filter, 36 parts of a raw water tank, 37 parts of a fire control water tank, G1, a first water inlet water pump, G2 and a second water inlet water pump; QF1, a circuit breaker, KM1, a total manual contactor, KM2, a total automatic contactor, KM3, a first sub manual contactor, KM4, a second sub manual contactor, FR1, a first thermal relay, FR2, a second thermal relay, SA, a single-pole three-throw switch, KA1, a first intermediate relay, KA2, a second intermediate relay, KA3, a third intermediate relay, KA4, a fourth intermediate relay, H1, a first fault indicator, H2, a second fault indicator, SB1, a first normally open switch, SB2, a second normally closed switch, SB3, a second normally open switch, SB4, a second normally closed switch, KM5, a third sub manual contactor, KM7, a fourth sub manual contactor, BU, a frequency converter, KM6, a fifth sub manual contactor, KM8 and a sixth sub manual contactor.
Detailed Description
Example 1:
the pure water supply system for the air cooler as shown in fig. 1 to 5 comprises a PP cotton filter module 1, wherein the output end of the PP cotton filter module 1 is connected to a reverse osmosis filter 3 through a reverse osmosis pressure pump 2; the waste discharge end of the reverse osmosis filter 3 is connected to a waste discharge pipe 4; an opening valve 5 is arranged on the waste discharge pipe 4; the water outlet end of the reverse osmosis filter 3 is connected to a pure water tank 6; the pure water tank 6 is connected to a pure water supply end of the air cooler through a pure water pump 7; when the filter works, the water outlet pipe of the raw water tank sends raw water into the PP cotton filter module 1, after the raw water is filtered by the PP cotton filter module 1, the raw water is pressurized by the reverse osmosis pressure pump 2 and then sent into the reverse osmosis filter 3 for reverse osmosis filtration treatment; pure water filtered by the reverse osmosis filter 3 is sent to a pure water tank 6; the waste discharge end of the reverse osmosis filter 3 discharges waste water; the waste discharge resistance of the reverse osmosis filter 3 is regulated through an opening valve 5 on the waste discharge pipe 4, so that the pressure of the input end of the reverse osmosis filter 3 is ensured;
the PP cotton filter module 1 comprises a filter element assembly, wherein the filter element assembly comprises two shunt tubes 8, one ends of the shunt tubes 8 are closed, and the other ends of the shunt tubes are flange ends; each shunt tube 8 is provided with a PP cotton filter element group 9 and a first valve body 10; the other end of the first valve body 10 is connected to a water inlet pipe 11; the other ends of the two PP cotton filter element groups 9 are respectively connected to a collecting pipe 12; the collecting pipe 12 is connected to a collecting tank 14 through a second valve body 13; the flange end of the shunt tube 8 is connected to the output end of a hydraulic control one-way valve 15, and the input end of the hydraulic control one-way valve 15 is connected to an independent PP cotton filter element 16; the other end of the independent PP cotton filter element 16 is connected to the input end of a first one-way valve 17; the output end of the first one-way valve 17 is connected to the liquid collecting tank 14; the bottom of the liquid collection tank 14 is connected to the input end of the reverse osmosis filter 3 through the reverse osmosis pressure pump 2; the collecting pipe 12 is connected in parallel with a second one-way valve 18 between the PP cotton filter element group 9 and the second valve body 13; the input end of the second one-way valve 18 is connected to a backwash line 19; the two backwashing pipelines 19 are connected to two output ends of a three-way valve 20; the input end of the three-way valve 20 is connected to a backwashing tank 22 through a backwashing pressure pump 21; the back flushing tank 22 is connected with the waste discharge pipe 4; the waste liquid treatment assembly is characterized by further comprising a waste liquid treatment assembly, wherein the waste liquid discharge pipe 4 is connected to a transition pipe 23, one end of the transition pipe 23 is closed, and the other end of the transition pipe is connected to a waste liquid discharge valve 24; the waste liquid treatment assembly comprises a back flushing tank 22, and a third valve body 25 is arranged at the bottom of the back flushing tank 22; the bottom of the third valve body 25 is connected to a settling tank 26; a fourth valve body 27 is arranged at the bottom of the sedimentation tank 26; the fourth valve body 27 is connected to the transition pipe 23; the fourth valve body 27 is arranged between the waste pipe 4 and the waste valve 24; the upper part of the inner side of the back flushing tank 22 is provided with a liquid level meter 28; the top of the back flushing tank 22 is connected to a high-level alkali liquor storage tank 30 through a metering valve 29; a backflushing pipe 31 is arranged at the bottom of the backflushing tank 22; a recoil valve 32 is arranged on the recoil pipe 31; the recoil valve 32 is connected to the recoil pressure pump 21, and a control oil port of the hydraulic control one-way valve 15 is connected to an oil pressure pipeline 33 through an electromagnetic valve; the reverse osmosis pressure pump 2, the opening valve 5, the first valve body 10, the second valve body 13, the electromagnetic valve, the three-way valve 20, the back flushing pressure pump 21, the waste valve 24, the third valve body 25, the fourth valve body 27, the liquid level gauge 28, the metering valve 29 and the back flushing valve 32 are connected to a controller.
The working process of the PP cotton filter module 1 is as follows:
during normal operation, the raw water is pressurized and fed into the water inlet pipe 11 of the PP cotton filter module 1 by the water outlet pipe of the raw water tank, the raw water in the water inlet pipe 11 respectively enters the split pipe 8 through the first valve body 10 and sequentially enters each filter element of the PP cotton filter element group 9 through the split pipe 8 in a split way, after filtration is completed, filtered water enters the collecting pipe 12 and is fed into the collecting tank 14 through the collecting pipe 12, and the filtered water in the collecting tank 14 waits for the reverse osmosis filter 3 to carry out reverse osmosis filtration treatment; at this time, due to the unidirectionality of the hydraulic control check valve 15, the first check valve 17 and the second check valve 18, the uniqueness of the travelling path is always maintained when the raw water passes through the PP cotton filter element group 9;
the two groups of PP cotton filter modules 1 are periodically and alternately backwashed, during backwashing, a backwash pressure pump 21 pumps backwash water out of a backwash tank 22 and pressurizes the backwash water, then a three-way valve 20 is controlled to enable a backwash pipeline 19 of the PP cotton filter element group 9 to be flushed to be communicated with the backwash pressure pump 21, and a first valve body 10 and a second valve body 13 communicated with the PP cotton filter element group 9 are closed, at the moment, backwash water enters a collecting pipe 12 through a second one-way valve 18, backwash water enters the PP cotton filter element group 9 through the collecting pipe 12, and then an electromagnetic valve is opened, so that pressure oil of an oil pressure pipeline 33 is sent to a control oil port of a hydraulic control one-way valve 15; the pressure oil pushes up the unidirectional valve core of the hydraulic control unidirectional valve 15, at the moment, the two ends of the hydraulic control unidirectional valve 15 are mutually communicated, and after the high-pressure backwash water backwash the PP cotton filter element group 9, backwash water enters the independent PP cotton filter element 16; after the back flush water is filtered through the independent PP cotton filter element 16, the back flush water is sent to the liquid collecting tank 14 through the first one-way valve 17, and the filtered water in the liquid collecting tank 14 waits for the reverse osmosis filter 3 to carry out reverse osmosis filtration treatment;
the rinse water is supplied from the reject end of the reverse osmosis filter 3 as follows:
firstly, closing a waste discharge valve 24, and discharging waste water at the waste discharge end of the reverse osmosis filter 3; the wastewater enters the transition pipe 23 through the wastewater discharge pipe 4, sequentially passes through the fourth valve body 27, the sedimentation tank 26 and the third valve body 25, finally enters the backwash tank 22, the water level in the backwash tank 22 continuously rises, when the liquid level gauge 28 detects that the water level reaches the set height, the controller gives a signal to the wastewater discharge valve 24, at the moment, the wastewater discharge valve 24 is opened, and the wastewater in the backwash tank 22 is discharged; and delay the time of discharging the waste, when the time of discharging the waste reaches, close the waste valve 24, at this moment, the waste water enters back flush tank 22 again and accumulates, the water level in back flush tank 22 is continuously rising, when the level gauge 28 detects the water level reaches the set level, the controller gives the fourth valve body 27 signal, the fourth valve body 27 is closed, meanwhile, the waste valve 24 is opened, then, the controller triggers the metering valve 29, the high alkali lye storage tank 30 is to drip quantitative alkali lye continuously into back flush tank 22; the alkali liquor is fully mixed with the wastewater in the backwashing tank 22, calcium and magnesium plasma in the wastewater reacts with the alkali liquor to generate carbonate precipitation, and when the reaction time is up, the third valve body 25 is closed, so that a standing precipitation layer is trapped in the precipitation tank 26; isolating the treated wastewater in a backwash tank 22 to await backwash application; then, the fourth valve body 27 is opened, and the precipitated wastewater is discharged through the transition pipe 23; when the backwash water in the backwash tank 22 is applied, a new round of backwash tank 22 water intake treatment is performed.
The hydraulic control one-way valve 15, the independent PP cotton filter element 16 and the first one-way valve 17 are connected through flanges; when the independent PP cotton filter element 16 needs to be disassembled, cleaned or replaced, a bolt and a nut can be directly screwed down, the independent PP cotton filter element 16 is separated from the hydraulic control one-way valve 15 and the first one-way valve 17, and after the independent PP cotton filter element 16 is disassembled, the split pipe 8 and the liquid collecting tank 14 can be sealed due to the unidirectionality of the hydraulic control one-way valve 15 and the first one-way valve 17; at this time, the PP cotton filter module 1 can still work on line; when the independent PP cotton filter element 16 is finished with external cleaning or a new independent PP cotton filter element 16 is taken out, the split-flow tube 8 and the liquid collecting tank 14 are installed.
The PP cotton filter module 1 comprises a PP cotton filter module with the diameter of 5 mu m and a PP cotton filter module with the diameter of 1 mu m; the output end of the back flushing pressure pump 21 is connected with two groups of three-way valves 20 in parallel, and one group of three-way valves 20 is connected to a PP cotton filtering module with the diameter of 5 mu m; the other set of said three-way valves 20 is connected to a PP cotton filter module of 1 μm. The effluent of the raw water tank is initially filtered through the front end, enters a PP cotton filter module with the diameter of 5 mu m for filtering, then enters a PP cotton filter module with the diameter of 1 mu m for filtering, and enters a liquid collecting tank 14 for waiting for reverse osmosis treatment of the reverse osmosis filter 3.
The closed end of the shunt tube 8 is embedded with a pressure transmitter 34; the pressure transmitter 34 is connected to a controller; the pressure of the shunt pipe 8 is monitored in real time through the pressure transmitter 34, and monitoring data are sent to the controller, so that the pressure of the input end of the PP cotton filter element group 9 is monitored, and a back flushing process is triggered once the pressure reaches a set value; when one group of PP cotton filter modules 1 is back-flushed, and the pressure of the other group of PP cotton filter modules 1 reaches a set pressure value, the back flushing is carried out on the PP cotton filter modules 1 waiting for the back flushing, and then the back flushing is carried out on the PP cotton filter modules 1.
The input end of the PP cotton filter module 1 is connected to a primary filter 35; primary filter 35 is connected to raw water tank 36; the raw water tank 36 is connected to the underground water well through a first water inlet pump G1; the waste valve 24 is connected to a fire water tank 37; the output end of the first water inlet pump G1 is connected to the fire water tank 37 through a branch pipe valve; the raw water tank 36 is also connected with a tap water pipe network through a second water inlet pump G2; the power supply ends of the first water inlet pump G1 and the second water inlet pump G2 are connected to a power supply control board; raw water in the raw water tank 36 is pressurized and then sent to the primary filter 35 for filtration, then enters the PP cotton filter module 1 for filtration, and waste water discharged after being treated by the reverse osmosis filter 3 is sent to the fire water tank 37 through the waste discharge valve 24 for fire water; the power control board controls the first water intake pump G1 and the second water intake pump G2 to operate, thereby pumping tap water or groundwater to the raw water tank 36.
As shown in fig. 6 to 8, the power supply control board includes a three-phase four-wire power supply; the three-phase four-wire system power supply is connected to a total manual contactor KM1 through a breaker QF1, and the total manual contactor KM1 is connected to a first thermal relay FR1 and a second thermal relay FR2 through a first sub manual contactor KM3 and a second sub manual contactor KM4 respectively; the first thermal relay FR1 and the second thermal relay FR2 are connected to the power supply ends of the first water inlet pump G1 and the second water inlet pump G2; the two phase lines of the three-phase four-wire system power supply are connected with a first control module in parallel; a second control module is arranged between one phase line and a zero line of the three-phase four-wire system power supply;
the first control module comprises a single-pole three-throw switch SA; the input end of the single-pole three-throw switch SA is connected to a phase line, the middle output end of the single-pole three-throw switch SA is suspended, and the other two output ends are respectively connected with a first intermediate relay KA1 and a second intermediate relay KA2; the first intermediate relay KA1 and the second intermediate relay KA2 are connected to another phase line; the normal open end of the first intermediate relay KA1, the normal closed end of the second intermediate relay KA2 and the control loop of the total manual contactor KM1 are connected in series and then connected to two phase lines; the normally-closed end of the first intermediate relay KA1, the normally-open end of the second intermediate relay KA2 and the control loop of the total automatic contactor KM2 are connected in series and then connected to two phase lines;
the second control module comprises a third intermediate relay KA3 and a fourth intermediate relay KA4; the third intermediate relay KA3 and the fourth intermediate relay KA4 are respectively connected with the normally closed ends of the first thermal relay FR1 and the second thermal relay FR2 in series and then connected to the phase line and the zero line; the normally open ends of the first thermal relay FR1 and the second thermal relay FR2 are respectively connected with a first fault indicator lamp H1 or a second fault indicator lamp H2 in series and then connected to a phase line and a zero line;
the normal open end of the first sub-manual contactor KM3, the control loop of the first sub-manual contactor KM3, the normal open end of the third intermediate relay KA3 and the first normally closed switch SB2 are connected in series and then connected to the phase line and the neutral line; the normally open end of the first manual dividing contactor KM3 is connected with a first normally open switch SB1 in parallel; the normal open end of the second manual dividing contactor KM4, the control loop of the second manual dividing contactor KM4, the normal open end of the fourth intermediate relay KA4 and the second normally closed switch SB4 are connected in series and then connected to the phase line and the zero line; the normally open end of the second manual contactor KM4 is connected with a second normally open switch SB3 in parallel;
the three-phase four-wire system power supply is connected to a third manual dividing contactor KM5 and a fourth manual dividing contactor KM7 through a total automatic contactor KM 2; the third manual dividing contactor KM5 and the fourth manual dividing contactor KM7 are connected to the input ends of the first thermal relay FR1 and the second thermal relay FR2 in parallel;
the output end of the total automatic contactor KM2 is connected to the power supply end of the frequency converter BU; the output end of the frequency converter BU is connected to a fifth manual contactor KM6 and a sixth manual contactor KM8; the fifth manual contactor KM6 and the sixth manual contactor KM8 are connected to the input ends of the first thermal relay FR1 and the second thermal relay FR2 in parallel; the BU control end of the frequency converter is connected to the controller;
after the control loop of the third manual dividing contactor KM5 and the normally closed end of the fourth manual dividing contactor KM7 are connected in series, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the third intermediate relay KA 3; after the control loop of the fourth manual dividing contactor KM7 is connected with the normally closed end of the third manual dividing contactor KM5 in series, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the third intermediate relay KA 3; after the control loop of the fifth manual contactor KM6 is connected with the normally closed end of the sixth manual contactor KM8 in series, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the fourth intermediate relay KA4; after the control loop of the sixth manual contactor KM8 and the normally closed end of the fifth manual contactor KM6 are connected in series, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the fourth intermediate relay KA 4.
The control of the first water inlet pump G1 and the second water inlet pump G2 can be manually controlled, automatically controlled by a contactor and automatically controlled by a frequency converter BU; the specific control process is as follows:
manual control mode: switching on the breaker QF1, at this moment, the three-phase four-wire system power supply can pass through the breaker QF1, then, switch the input end of the single-pole three-throw switch SA from the intermediate suspension end to the connecting end of the first intermediate relay KA1, at this moment, the first intermediate relay KA1 is powered on, the normally open end of the first intermediate relay KA1 is closed, the normally closed end of the first intermediate relay KA1 is disconnected, at this moment, the three-phase four-wire system power supply, the breaker QF1 and the total manual contactor KM1 are connected, then, according to the control requirement, the first water inlet pump G1 and/or the second water inlet pump G2 are selected to be connected, specifically: the first normally open switch or the second normally open switch is pressed down, and at the moment, the control loop of the first sub manual contactor KM3 and the control loop of the second sub manual contactor KM4 are connected, so that the normally open end of the first sub manual contactor KM3 or the normally open end of the second sub manual contactor KM4 is closed, and the self-locking of the first normally open switch or the second normally open switch is realized; at this time, the first sub-manual contactor KM3 or the second sub-manual contactor KM4 is closed, and the three-phase four-wire power supply is connected to the first water intake pump G1 and/or the second water intake pump G2.
Automatic contactor control mode: the breaker QF1 is switched on, at this moment, the three-phase four-wire system power supply can pass through the breaker QF1, then, the input end of the single-pole three-throw switch SA is switched from the intermediate suspension end to the connecting end of the second intermediate relay KA2, at this moment, the second intermediate relay KA2 is powered on, the normally open end of the second intermediate relay KA2 is closed, the normally closed end of the second intermediate relay KA2 is disconnected, at this moment, the three-phase four-wire system power supply, the breaker QF1 and the total automatic contactor KM2 are connected, and then, according to control requirements, the controller controls the first water inlet pump G1 and/or the second water inlet pump G2 to be connected: the controller is used for providing an IO port signal for the control loop of the third manual dividing contactor KM5 or the control loop of the fifth manual dividing contactor KM6, so that the main contact of the third manual dividing contactor KM5 or the fifth manual dividing contactor KM6 is communicated, and a three-phase four-wire system power supply is used for supplying power to the first water inlet pump G1 and/or the second water inlet pump G2 through the third manual dividing contactor KM5 or the fifth manual dividing contactor KM 6; when the third partial manual contactor KM5 control loop or the fifth partial manual contactor KM6 control loop is powered on, a fourth partial manual contactor KM7 control loop or a sixth partial manual contactor KM8 control loop which is connected with the normally-closed end of the third partial manual contactor KM5 control loop or the fifth partial manual contactor KM6 control loop is automatically disconnected;
when the controller is connected with an IO port signal of a control loop of the fourth manual contactor KM7 or a control loop of the sixth manual contactor KM8, a main contact of the fourth manual contactor KM7 or the sixth manual contactor KM8 is connected, and thus a three-phase four-wire system power supply supplies power to the first water inlet pump G1 and/or the second water inlet pump G2 through the fourth manual contactor KM7 or the sixth manual contactor KM8; when the fourth manual contactor KM7 control circuit or the sixth manual contactor KM8 control circuit is powered on, the third manual contactor KM5 control circuit or the fifth manual contactor KM6 control circuit which is connected with the normally closed end of the fourth manual contactor KM7 control circuit or the sixth manual contactor KM8 control circuit is automatically disconnected;
when the first thermal relay FR1 or the second thermal relay FR2 is in overheat protection, the normally closed end of the first thermal relay FR1 or the second thermal relay FR2 is disconnected, and at the moment, the third intermediate relay KA3 and the fourth intermediate relay KA4 are disconnected; thereby the control loop of the first sub-manual contactor KM3 and the control loop of the second sub-manual contactor KM4 are disconnected, the main contacts of the first sub-manual contactor KM3 and the second sub-manual contactor KM4 are disconnected, and the power supply of the first water inlet pump G1 and/or the second water inlet pump G2 is disconnected; meanwhile, the first thermal relay FR1 and the second relay are normally opened and closed, and at the moment, the fault indicator lamp is lighted; when the third intermediate relay KA3 or the fourth intermediate relay KA4 is deenergized, the normally open end of the third intermediate relay KA3 and the normally open end of the fourth intermediate relay KA4 are disconnected, so that the control loops of the third sub manual contactor KM5 and the fourth sub manual contactor KM7, or the control loops of the fifth sub manual contactor KM6 and the sixth sub manual contactor KM8 are disconnected, and so that the main contacts of the third sub manual contactor KM5 and the fourth sub manual contactor KM7, or the fifth sub manual contactor KM6 and the sixth sub manual contactor KM8 are disconnected.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (6)
1. The pure water supply system for the air cooler comprises a PP cotton filter module, wherein the output end of the PP cotton filter module is connected to a reverse osmosis filter through a reverse osmosis pressure pump; the waste discharge end of the reverse osmosis filter is connected to a waste discharge pipe; an opening valve is arranged on the waste discharge pipe; the water outlet end of the reverse osmosis filter is connected to the pure water tank; the pure water tank is connected to a pure water supply end of the air cooler through a pure water pump; the method is characterized in that: the PP cotton filtering module comprises a filter element assembly, wherein the filter element assembly comprises two shunt tubes, one end of each shunt tube is closed, and the other end of each shunt tube is a flange end; each shunt tube is provided with a PP cotton filter element group and a first valve body; the other end of the first valve body is connected to the water inlet pipe; the other ends of the two PP cotton filter element groups are respectively connected to a collecting pipe; the collecting pipe is connected to the collecting tank through a second valve body; the flange end of the shunt tube is connected to the output end of the hydraulic control one-way valve, and the input end of the hydraulic control one-way valve is connected to the independent PP cotton filter element; the other end of the independent PP cotton filter element is connected to the input end of the first one-way valve; the output end of the first one-way valve is connected to the liquid collecting tank; the bottom of the liquid collection tank is connected to the input end of the reverse osmosis filter through a reverse osmosis pressure pump; the collecting pipe is connected in parallel with a second one-way valve between the PP cotton filter element group and the second valve body; the input end of the second one-way valve is connected to a backwash pipeline; the two backwashing pipelines are connected to two output ends of the three-way valve; the input end of the three-way valve is connected to a backwashing tank through a backwashing pressure pump; the back flushing tank is connected with the waste discharge pipe; the waste liquid treatment assembly is characterized by further comprising a waste liquid treatment assembly, wherein the waste liquid discharge pipe is connected to a transition pipe, one end of the transition pipe is closed, and the other end of the transition pipe is connected to a waste liquid discharge valve; the waste liquid treatment assembly comprises a back flushing tank, and a third valve body is arranged at the bottom of the back flushing tank; the bottom of the third valve body is connected to the precipitation tank; a fourth valve body is arranged at the bottom of the precipitation tank; the fourth valve body is connected to the transition pipe; the fourth valve body is arranged between the waste discharge pipe and the waste discharge valve; the upper part of the inner side of the back flushing tank is provided with a liquid level meter; the top of the back flushing tank is connected to a high-level alkali liquor storage tank through a metering valve; the bottom of the backwashing tank is provided with a backwashing pipe; a recoil valve is arranged on the recoil pipe; the back flushing valve is connected to the back flushing pressure pump, and a control oil port of the hydraulic control one-way valve is connected to an oil pressure pipeline through an electromagnetic valve; the reverse osmosis pressure pump, the opening valve, the first valve body, the second valve body, the electromagnetic valve, the three-way valve, the back flush pressure pump, the waste discharge valve, the third valve body, the fourth valve body, the liquid level meter, the metering valve and the back flush valve are connected to the controller.
2. The pure water supply system for an air cooler according to claim 1, wherein: the hydraulic control one-way valve, the independent PP cotton filter element and the first one-way valve are connected through a flange.
3. The pure water supply system for an air cooler according to claim 1, wherein: the PP cotton filter module comprises a PP cotton filter module with the diameter of 5 mu m and a PP cotton filter module with the diameter of 1 mu m; the output end of the back flushing pressure pump is connected with two groups of three-way valves in parallel, and one group of three-way valves is connected to a PP cotton filtering module with the thickness of 5 mu m; the other group of three-way valves is connected to a1 μm PP cotton filtration module.
4. The pure water supply system for an air cooler according to claim 1, wherein: the closed end of the shunt tube is embedded with a pressure transmitter; the pressure transmitter is coupled to a controller.
5. The pure water supply system for an air cooler according to claim 1, wherein: the input end of the PP cotton filtering module is connected to the primary filter; the primary filter is connected to the raw water tank; the raw water tank is connected to an underground water well through a first water inlet pump; the waste discharge valve is connected to the fire water tank; the output end of the first water inlet pump is connected to the fire water tank through a branch pipe valve; the raw water tank is also connected with a tap water pipe network through a second water inlet pump; the power supply ends of the first water inlet pump and the second water inlet pump are connected to the power supply control board.
6. The pure water supply system for an air cooler according to claim 5, wherein: the power supply control board comprises a three-phase four-wire system power supply; the three-phase four-wire system power supply is connected to a total manual contactor through a circuit breaker, and the total manual contactor is connected to a first thermal relay and a second thermal relay through a first branch manual contactor and a second branch manual contactor respectively; the first thermal relay and the second thermal relay are connected to the power supply ends of the first water inlet pump and the second water inlet pump; the two phase lines of the three-phase four-wire system power supply are connected with a first control module in parallel; a second control module is arranged between one phase line and a zero line of the three-phase four-wire system power supply;
the first control module comprises a single-pole three-throw switch; the input end of the single-pole three-throw switch is connected to a phase line, the middle output end of the single-pole three-throw switch is suspended, and the other two output ends are respectively connected with a first middle relay and a second middle relay; the first intermediate relay and the second intermediate relay are connected to another phase line; the normal open end of the first intermediate relay, the normal closed end of the second intermediate relay and the control loop of the total manual contactor are connected in series and then connected to two phase lines; the normally-closed end of the first intermediate relay, the normally-open end of the second intermediate relay and the control loop of the total automatic contactor are connected in series and then connected to two phase lines;
the second control module comprises a third intermediate relay and a fourth intermediate relay; the third intermediate relay and the fourth intermediate relay are connected with the normally-closed ends of the first thermal relay and the second thermal relay respectively in series and then connected to the phase line and the zero line; the normal open ends of the first thermal relay and the second thermal relay are respectively connected with a first fault indicator lamp or a second fault indicator lamp in series and then connected to the phase line and the zero line;
the first branch manual contactor normal open end, the first branch manual contactor control loop, the third intermediate relay normal open end and the first normally closed switch are connected in series and then connected to the phase line and the zero line; the normally open end of the first manual dividing contactor is connected with a first normally open switch in parallel; the second normal open end of the second sub manual contactor, the second sub manual contactor control loop, the fourth intermediate relay normal open end and the second normally closed switch are connected in series and then connected to the phase line and the zero line; the normally open end of the second manual contactor is connected with a second normally open switch in parallel;
the three-phase four-wire system power supply is connected to a third manual contactor and a fourth manual contactor through a total automatic contactor; the third manual contactor and the fourth manual contactor are connected to the input ends of the first thermal relay and the second thermal relay in parallel;
the output end of the total automatic contactor is connected to the power supply end of the frequency converter; the output end of the frequency converter is connected to a fifth manual contactor and a sixth manual contactor; the fifth manual contactor and the sixth manual contactor are connected to the input ends of the first thermal relay and the second thermal relay in parallel; the control end of the frequency converter is connected to the controller;
after the control loop of the third manual contactor and the normally closed end of the fourth manual contactor are connected in series, one end of the control loop of the third manual contactor is connected to the IO port of the controller, and the other end of the control loop of the third manual contactor is grounded through the normally open end of the third intermediate relay; after the control loop of the fourth manual contactor is connected with the normally closed end of the third manual contactor in series, one end of the control loop of the fourth manual contactor is connected to the IO port of the controller, and the other end of the control loop of the fourth manual contactor is grounded through the normally open end of the third intermediate relay; after the control loop of the fifth manual contactor and the normally closed end of the sixth manual contactor are connected in series, one end of the control loop of the fifth manual contactor is connected to the IO port of the controller, and the other end of the control loop of the fifth manual contactor is grounded through the normally open end of the fourth intermediate relay; and after the control loop of the sixth manual contactor is connected in series with the normally closed end of the fifth manual contactor, one end of the control loop is connected to the IO port of the controller, and the other end of the control loop is grounded through the normally open end of the fourth intermediate relay.
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| CN202311690698.XA CN117383769B (en) | 2023-12-11 | 2023-12-11 | Pure water supply system for air cooler |
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Patent Citations (5)
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| CN104891699A (en) * | 2015-06-16 | 2015-09-09 | 西南科技大学 | Water purifier with raw water utilization rate monitoring and filter element replacement alarming functions |
| CN206680282U (en) * | 2017-04-07 | 2017-11-28 | 湖北泽中饮料有限公司 | Can on-line cleaning multistage purification of water system |
| KR102157164B1 (en) * | 2019-12-17 | 2020-09-18 | 청수기술환경 주식회사 | Submerged membrane filtration and backwashing and chemical immersion washing system and method |
| CN216236314U (en) * | 2021-11-09 | 2022-04-08 | 张爱萍 | Reverse osmosis water purification system |
| CN218833773U (en) * | 2022-11-18 | 2023-04-11 | 内蒙古乌兰察布东阳光化成箔有限公司 | Full-automatic filtration system with back flush function |
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