CN211595305U - Ultrapure water equipment - Google Patents

Abstract

The utility model discloses an ultrapure water equipment, including former water tank, one-level water purification case, second grade water purification case, ultrapure water case, dense water tank, one-level reverse osmosis mechanism, second grade reverse osmosis mechanism, EDI module, equipment mechanism of intaking, chlorine residue reduction device, preceding processing mechanism of intaking, preceding processing filter, one-level reverse osmosis mechanism of intaking, the dense water outlet mechanism of one-level reverse osmosis, PH adjusting device, second grade reverse osmosis mechanism of intaking, the dense water outlet mechanism of second grade reverse osmosis, EDI module mechanism of intaking and ultrapure water conveying mechanism. By the above mode, the utility model can balance the water inflow and the water consumption; the water production rate of the ultrapure water equipment is high; the operation is stopped immediately when a fault occurs, and the self-protection function is realized; the pressure of the tank body is in a certain range, and the tank body cannot deform; the service life of the motor can be prolonged; the service life of the reverse osmosis membrane is prolonged; the water pressure in the pipeline is within a specified range, and the pipeline is prevented from being broken and leaking water; the ultrapure water device produces stable water.

Description

Ultrapure water equipment

Technical Field

The utility model relates to a water treatment technical field especially relates to an ultrapure water equipment.

Background

The ultrapure water equipment is water treatment equipment which adopts methods such as pretreatment, reverse osmosis technology, ultrapure treatment, post-treatment and the like to almost completely remove conductive media in water and remove colloid substances, gases and organic matters which are not dissociated in water to a very low degree.

The ultrapure water device operated manually or semi-automatically often has the problems that an operator leaks to operate a certain valve or is unskilled in operation, part of operation steps are forgotten, the ultrapure water device is damaged by accessories, a membrane is blocked/perforated/EDI module is scrapped and the like, and when the ultrapure water device is operated, the condition of insufficient water supply can also appear in the front, so that filtered impurities in pretreatment are sucked into a reverse osmosis membrane, and the filtering effect cannot be achieved. When the quality of the outlet water does not meet the requirement, the produced water can continuously enter the ultrapure water tank, and the quality of the subsequent water consumption point process is influenced.

When the equipment fails, the equipment stops alarming, but the reason of the failure is unknown. And the program does not pay attention to what the condition can be caused by the number of times of restarting the motor in the running process, and what the condition can be caused by overhigh/overlow internal pressure of the equipment.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides an ultrapure water equipment, and the water yield is high, has the function of oneself's protection, ultrapure water equipment long service life, and the product water is stable.

In order to solve the technical problem, the utility model discloses a technical scheme be: provided is an ultrapure water apparatus comprising: the system comprises a raw water tank, a first-stage pure water tank, a second-stage pure water tank, a super pure water tank, a concentrated water tank, a first-stage reverse osmosis mechanism, a second-stage reverse osmosis mechanism, an EDI module, an equipment water inlet mechanism, a residual chlorine reduction device, a pretreatment water inlet mechanism, a pretreatment filter, a first-stage reverse osmosis water inlet mechanism, a first-stage reverse osmosis concentrated water outlet mechanism, a PH adjusting device, a second-stage reverse osmosis water inlet mechanism, a second-stage reverse osmosis concentrated water outlet mechanism, an EDI module water inlet mechanism, an EDI module water outlet mechanism and an ultrapure water conveying mechanism;

a raw water tank full water floating ball and a raw water tank water shortage floating ball are arranged in the raw water tank, and a water inlet pipe is arranged at a raw water tank water inlet; the residual chlorine reduction device is connected with the raw water tank, and the PH adjusting device is connected with the first-stage pure water tank; the equipment water inlet mechanism comprises a water feeding electromagnetic valve and a standby valve, the water feeding electromagnetic valve and the standby valve are connected in parallel to a water inlet pipe of the original water tank, a water filling floating ball of the original water tank is connected with the water feeding electromagnetic valve, and the water feeding electromagnetic valve is controlled by the water filling floating ball of the original water tank;

the pretreatment water inlet mechanism comprises a raw water pump, a raw water pump delivery valve, a raw water backflow pipeline and a pretreatment pressure switch, and two ends of the raw water pump are respectively connected with a raw water tank water outlet and a pretreatment filter water inlet through pipelines; the raw water pump is linked with the raw water tank water shortage floating ball, and the raw water tank water shortage floating ball controls the raw water pump to start; the pretreatment pressure switch is arranged on a pipeline between the raw water pump and the pretreatment filter, the raw water pump delivery valve is connected on a pipeline between the raw water pump and the raw water tank, one end of the raw water return pipeline is arranged on a pipeline between the raw water pump and the raw water pump delivery valve, and the other end of the raw water return pipeline is arranged on a pipeline between the raw water pump and the pretreatment pressure switch;

the first-stage reverse osmosis water inlet mechanism comprises a first-stage high-pressure pump, a first-stage high-pressure pump low-pressure protection switch and a first-stage high-pressure pump high-pressure protection switch; two ends of the first-stage high-pressure pump are respectively connected with a water outlet of the pretreatment filter and a water inlet of the first-stage reverse osmosis mechanism, and a low-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the pretreatment filter; the high-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the first-stage reverse osmosis mechanism;

the first-stage reverse osmosis concentrated water outlet mechanism comprises a first-stage concentrated water discharge pipe, a direct discharge valve, a flushing valve and a concentrated water return valve; the pure water discharge port of the first-stage reverse osmosis mechanism is connected with the first-stage pure water tank, the first-stage concentrated water discharge pipe is connected with the concentrated water discharge port of the first-stage reverse osmosis mechanism, three branch pipes are arranged on the first-stage concentrated water discharge pipe, and the three branch pipes are respectively a straight discharge pipe, a flushing pipe and a concentrated water return pipe; the straight-discharge pipeline is connected with the concentrated water tank, and the straight-discharge valve is arranged on the straight-discharge pipeline; the two ends of the flushing pipeline are connected in parallel to the straight discharging pipelines at the two ends of the straight discharging valve, and the flushing valve is arranged on the flushing pipeline; one end of the concentrated water backflow pipeline is connected with the upper end of the primary concentrated water discharge pipe, the other end of the concentrated water backflow pipeline is connected with the front end of the high-pressure pump, and the concentrated water backflow valve is arranged on the concentrated water backflow pipeline;

a primary pure water full-water floating ball and a primary pure water short-water floating ball are arranged in the primary pure water tank, and the primary pure water full-water floating ball is electrically connected with the raw water pump and the primary high-pressure pump;

the secondary reverse osmosis water inlet mechanism comprises a secondary high-pressure pump and a secondary high-pressure pump high-pressure protection switch, two ends of the secondary high-pressure pump are respectively connected with a water outlet of the primary pure water tank and a water inlet of the secondary reverse osmosis mechanism, and the secondary high-pressure pump is linked with the primary pure water shortage floating ball; a second-stage high-pressure pump return pipeline is arranged in front of and behind the second-stage high-pressure pump, and a second-stage high-pressure pump high-pressure protection switch is arranged at the rear end of the second-stage high-pressure pump;

the second-stage reverse osmosis concentrated water outlet mechanism comprises a second-stage concentrated water return pipeline, a second-stage concentrated water return electromagnetic valve, a second-stage flushing pipeline and a second-stage flushing electromagnetic valve; one end of the second-stage concentrated water backflow pipeline is connected with a concentrated water discharge port of the second-stage reverse osmosis mechanism, the other end of the second-stage concentrated water backflow pipeline is connected with the raw water tank, and the second-stage concentrated water backflow electromagnetic valve is arranged on the second-stage concentrated water backflow pipeline; two ends of the secondary flushing pipeline are connected to secondary concentrated water return pipelines at two ends of a secondary concentrated water return electromagnetic valve, and the secondary flushing electromagnetic valve is arranged on the secondary flushing pipeline;

a second-stage pure water full-water floating ball and a second-stage pure water short-water floating ball are arranged in the second-stage pure water tank, and the second-stage pure water full-water floating ball is electrically connected with the second-stage high-pressure pump;

the EDI module water inlet mechanism comprises an EDI delivery pump and an EDI high-voltage protection switch, the EDI delivery pump is connected between the secondary pure water tank and the EDI module, the secondary pure water-deficient floating ball is electrically connected with the EDI delivery pump, EDI backflow pipelines are arranged in front of and behind the EDI delivery pump, and the EDI high-voltage protection switch is arranged at the rear end of the EDI delivery pump;

the EDI module water outlet mechanism comprises a detection mechanism, an ultrapure water inlet pipe, an ultrapure water return pipe, an ultrapure water inlet electromagnetic valve and an ultrapure water return electromagnetic valve, the detection mechanism is arranged at a water outlet of the EDI module, two ends of the ultrapure water inlet pipe are respectively connected with the water outlet of the EDI module and the ultrapure water tank, the ultrapure water inlet electromagnetic valve is arranged on the ultrapure water inlet pipe, two ends of the ultrapure water return pipe are respectively connected with the second-stage pure water tank and the ultrapure water inlet pipe, and the ultrapure water return electromagnetic valve is arranged on the ultrapure water; an ultrapure water full-water floating ball and an ultrapure water short-water floating ball are arranged in the ultrapure water tank, and the ultrapure water full-water floating ball is linked with the EDI delivery pump;

the ultra-pure water conveying mechanism comprises a conveying pump, a UV sterilizer, a polishing mixed bed, a conveying pipeline and a conveying backflow pipeline, wherein the conveying pump is connected between an ultra-pure water tank and a using point through the conveying pipeline; and the delivery pump is linked with the ultrapure water-shortage floating ball.

Furthermore, a raw water reflux regulating valve is arranged on the raw water reflux pipeline.

The utility model has the advantages that: the utility model can balance the water inflow and the water consumption; the water production rate of the ultrapure water equipment is high; the operation is stopped immediately when a fault occurs, and the self-protection function is realized; the pressure of the tank body is in a certain range, and the tank body cannot deform; the service life of the motor can be prolonged; the service life of the reverse osmosis membrane is prolonged; the water pressure in the pipeline is within a specified range, and the pipeline is prevented from being broken and leaking water; the ultrapure water device produces stable water.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of an ultrapure water apparatus of the present invention;

FIG. 2 is a schematic view of part A of FIG. 1;

FIG. 3 is a schematic view of the portion B of FIG. 1;

the parts in the drawings are numbered as follows: 1. a device water inlet mechanism; 2. a residual chlorine reduction device; 3. a pretreatment water inlet mechanism; 4. a first-stage reverse osmosis water inlet mechanism; 5. a first-stage reverse osmosis concentrated water outlet mechanism; 6. a pH adjusting device; 7. a secondary reverse osmosis water inlet mechanism; 8. a second-stage reverse osmosis concentrated water outlet mechanism; 9. EDI module water inlet mechanism; 10. the EDI module water outlet mechanism; 11. an ultrapure water delivery mechanism; 12. an EDI module; 21. a raw water tank; 22. a second-stage pure water tank; 23. an ultra pure water tank.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1 to 3, an embodiment of the present invention includes:

an ultrapure water apparatus comprising: a raw water tank 21, a first-stage pure water tank, a second-stage pure water tank 22, an ultra-pure water tank 23, a concentrated water tank, a first-stage reverse osmosis mechanism, a second-stage reverse osmosis mechanism, an EDI module 12, an equipment water inlet mechanism 1, a residual chlorine reduction device 2, a pretreatment water inlet mechanism 3, a pretreatment filter, a first-stage reverse osmosis water inlet mechanism 4, a first-stage reverse osmosis concentrated water outlet mechanism 5, a PH adjusting device 6, a second-stage reverse osmosis water inlet mechanism 7, a second-stage reverse osmosis concentrated water outlet mechanism 8, an EDI module water inlet mechanism 9, an EDI module water outlet mechanism 10 and an ultra-pure water conveying mechanism 11;

a raw water tank full water floating ball and a raw water tank water shortage floating ball are arranged in the raw water tank; the equipment water inlet mechanism 1 comprises a water feeding electromagnetic valve and a standby valve, the water feeding electromagnetic valve and the standby valve are connected in parallel to a water inlet pipe of a raw water tank, a raw water tank full water floating ball is connected with the water feeding electromagnetic valve, the water feeding electromagnetic valve is controlled to start through the raw water tank full water floating ball, the water feeding electromagnetic valve is continuously opened before the raw water tank full water floating ball gives no signal, and the standby valve prevents the water feeding electromagnetic valve or the raw water tank full water floating ball from being used after the raw water tank full water floating ball fails;

the residual chlorine reduction device 2 is connected with the raw water tank, is mainly used for removing residual chlorine in the inlet water of the reverse osmosis membrane, and is suitable for various reverse osmosis membranes;

the pretreatment water inlet mechanism 3 comprises a raw water pump, a raw water pump delivery valve, a raw water return pipeline and a pretreatment pressure switch, and two ends of the raw water pump are respectively connected with a raw water tank water outlet and a pretreatment filter water inlet; the raw water pump is linked with the raw water tank water shortage floating ball, the raw water tank water shortage floating ball controls the raw water pump to start, and after the raw water tank water shortage floating ball gives a signal, the raw water pump starts to convey water in the raw water tank to the pretreatment filter; the pretreatment pressure switch is arranged on a pipeline between the raw water pump and the pretreatment filter, the water pressure in the pipeline is prevented from being too high after the pretreatment is blocked, the raw water pump delivery valve is connected on the pipeline between the raw water pump and the raw water tank, one end of the raw water backflow pipeline is arranged on the pipeline between the raw water pump and the raw water pump delivery valve, the other end of the raw water backflow pipeline is arranged on the pipeline between the raw water pump and the pretreatment pressure switch, the raw water backflow pipeline is provided with a raw water backflow regulating valve, the raw water backflow regulating valve regulates the water inflow, and the water inflow pressure can be reduced.

The first-stage reverse osmosis water inlet mechanism 4 comprises a first-stage high-pressure pump, a first-stage high-pressure pump low-pressure protection switch and a first-stage high-pressure pump high-pressure protection switch; the two ends of the first-stage high-pressure pump are respectively connected with a water outlet of the pretreatment filter and a water inlet of the first-stage reverse osmosis mechanism, a low-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the pretreatment filter, the later water yield is insufficient when the current treatment is blocked, and the first-stage high-pressure pump cannot be started before the water pressure in the pipeline reaches the specified pressure, so that the situations that the impurities filtered out in the pretreatment are forcibly sucked out due to the insufficient water yield, the reverse osmosis membrane is blocked, and the pretreatment filter deforms under the negative pressure are avoided; the high-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the first-stage reverse osmosis mechanism and is used for preventing the pipeline pressure from being high due to the fact that a valve is closed by manual misoperation.

The first-stage reverse osmosis concentrated water outlet mechanism 5 comprises a first-stage concentrated water discharge pipe, a direct discharge valve, a flushing valve and a concentrated water return valve; the water after the first-stage reverse osmosis treatment is concentrated water and pure water, a pure water discharge port of the first-stage reverse osmosis mechanism is connected with the first-stage pure water tank, and the pure water enters the first-stage pure water tank; the first-stage concentrated water discharge pipe is connected with a concentrated water discharge port of the first-stage reverse osmosis mechanism, and three branch pipes are arranged on the first-stage concentrated water discharge pipe and respectively a straight discharge pipe, a flushing pipe and a concentrated water return pipe; the straight discharge pipeline is connected with the concentrated water tank, the straight discharge valve is arranged on the straight discharge pipeline, and the concentrated water flow is controlled through the straight discharge valve, so that the outlet ratio of concentrated water to pure water reaches 1: 1; the reverse osmosis membrane enters a flushing state after running for a period of time, the time is generally 3-15s, two ends of a flushing pipeline are connected in parallel with straight pipelines at two ends of a straight valve, the flushing valve is arranged on the flushing pipeline, the flushing pipeline bypasses the straight valve and is controlled by the flushing valve, so that all water in the reverse osmosis mechanism is discharged through a concentrated water pipe, and impurities on the surface of the membrane are flushed instantly; in reverse osmosis equipment with a larger tonnage, the problem of insufficient pretreatment water supply of the equipment often occurs, under most conditions, equipment suppliers increase the flow of a raw water pump, so that unnecessary expenses are caused, one end of a concentrated water backflow pipeline is connected with the upper end of a concentrated water discharge pipe, the other end of the concentrated water backflow pipeline is connected with the front end of a high-pressure pump, a concentrated water backflow valve is arranged on the concentrated water backflow pipeline, and only a part of concentrated water is required to flow back to the front of the high-pressure pump, so that on one hand, the water inflow is sufficient, and on the other hand, the water recycling rate can be increased;

the PH adjusting device 6 is connected with the first-stage pure water tank and used for adjusting the pH value of water; the reverse osmosis membrane has highest salt rejection rate at pH 7.5-7.8, and the balance of carbonate system shifts with pH change, and when pH is less than 8, C0 in water₃ ^2-And HCO₃ ^-Initial partial conversion to CO₂When the pH value is less than 4, the total content of C0 in the water₃ ^2-And HCO₃ ^-All have conversion to CO₂。

The water-full floating ball of one-level pure water and the water-deficient floating ball of one-level pure water are arranged in the one-level pure water tank, the pure water coming out of the one-level reverse osmosis directly enters the one-level pure water tank, the water-full floating ball of one-level pure water controls the starting of the one-level reverse osmosis equipment, and after the water-full floating ball of one-level pure water gives a signal, the raw water pump and the one-level.

The second-stage reverse osmosis water inlet mechanism 7 comprises a second-stage high-pressure pump and a second-stage high-pressure pump high-pressure protection switch, two ends of the second-stage high-pressure pump are respectively connected with a water outlet of the first-stage pure water tank and a water inlet of the second-stage reverse osmosis mechanism, and the second-stage high-pressure pump is linked with a grade pure water-shortage floating ball; after the pure water of the first-stage reverse osmosis enters the first-stage pure water tank, the starting of a second-stage high-pressure pump is controlled by a first-stage pure water-shortage floating ball, and return pipelines of the second-stage high-pressure pump are arranged in front of and behind the second-stage high-pressure pump, so that the pipeline pressure can be balanced while the pipeline flow is controlled; the high-pressure protection switch of the second-stage high-pressure pump is arranged at the rear end of the second-stage high-pressure pump and is used for avoiding high pipeline pressure caused by closing a valve by manual misoperation.

The second-stage reverse osmosis concentrated water outlet mechanism 8 comprises a second-stage concentrated water return pipeline, a second-stage concentrated water return electromagnetic valve, a second-stage flushing pipeline and a second-stage flushing electromagnetic valve; because the conductivity of the inlet water of the secondary reverse osmosis is below 10, even if the inlet water of the secondary reverse osmosis is concentrated water, the conductivity of the inlet water of the secondary reverse osmosis is not possibly inferior to that of tap water, so that the concentrated water of the secondary reverse osmosis is directly discharged into a raw water tank, the reuse rate of the water can be improved, the conductivity of the raw water can be reduced, and the service life of the membrane can be prolonged. One end of the second-stage concentrated water return pipeline is connected with a concentrated water discharge port of the second-stage reverse osmosis mechanism, the other end of the second-stage concentrated water return pipeline is connected with the raw water tank, and the second-stage concentrated water return electromagnetic valve is arranged on the second-stage concentrated water return pipeline; two ends of the second-stage flushing pipeline are connected to the second-stage concentrated water return pipelines at two ends of the second-stage concentrated water return electromagnetic valve, and the second-stage flushing electromagnetic valve is arranged on the second-stage flushing pipeline; the reverse osmosis membrane enters a flushing state after running for a period of time, the general time is 3-15s, a secondary flushing pipeline bypasses a secondary concentrated water backflow electromagnetic valve and is controlled by the secondary flushing electromagnetic valve, so that all water in the reverse osmosis membrane is discharged through the secondary concentrated water backflow pipeline, and impurities on the surface of the membrane are flushed instantly;

a second-stage pure water full-water floating ball and a second-stage pure water short-water floating ball are arranged in the second-stage pure water tank, pure water from the second-stage reverse osmosis directly enters the second-stage pure water tank, the second-stage pure water full-water floating ball controls the starting of the second-stage reverse osmosis equipment, and the second-stage high-pressure pump stops working after the second-stage pure water full-water floating ball gives a signal;

the EDI module water inlet mechanism 9 comprises an EDI delivery pump and an EDI high-voltage protection switch, the EDI delivery pump is connected between the secondary pure water tank and the EDI module, after the secondary reverse osmosis pure water enters the secondary pure water tank, the start of the EDI delivery pump is controlled by a secondary pure water-shortage floating ball in the secondary pure water tank, EDI return pipelines are arranged at the front and the back of the EDI delivery pump, the pressure in the pipeline can be reduced while the flow of the pipeline is controlled, the EDI high-voltage protection switch is arranged at the back end of the EDI delivery pump, the EDI blockage or the misoperation of an adjusting valve is prevented, the pressure is overhigh, the shutdown protection effect is achieved (the pressure switch is mechanical, the pressure switch can be reset in a short time, for example, the system can be frequently started, the original water pump is overloaded and damaged once every 1 second), the solution is that the reset time of the pressure switch is adjusted, if a, generally, the system is set within 20s-2min, if the frequent starting times exceed 10-20 times within a certain time, the system automatically stops working, and manual intervention is needed at the moment. )

The EDI module water outlet mechanism 10 comprises a detection mechanism, an ultrapure water inlet pipe, an ultrapure water return pipe, an ultrapure water inlet electromagnetic valve and an ultrapure water return electromagnetic valve, wherein the detection mechanism is arranged at a water outlet of the EDI module; an ultrapure water full-water floating ball and an ultrapure water short-water floating ball are arranged in the ultrapure water tank, and the ultrapure water full-water floating ball is linked with the EDI delivery pump; after the second-stage reverse osmosis produced water passes through the EDI module, the water outlet resistivity can reach more than 15 million. And when the detection mechanism detects that the produced water reaches 15 million, the ultrapure water inlet electromagnetic valve is opened, so that the water with the resistivity up to the standard enters the ultrapure water tank, the ultrapure water full-water floating ball in the ultrapure water tank controls the start of the EDI delivery pump, and when the ultrapure water full-water floating ball gives a signal, the EDI delivery pump stops working. When the EDI water production is lower than 15 million, the ultrapure water reflux electromagnetic valve is opened, the ultrapure water inlet electromagnetic valve is closed, and the water which does not reach the standard returns to the previous two-stage pure water tank and is reused.

The ultrapure water conveying mechanism 11 comprises a conveying pump, a UV sterilizer, a polishing mixed bed, a conveying pipeline and a conveying backflow pipeline, wherein the conveying pump is connected between the ultrapure water tank and a use point through the conveying pipeline; the delivery pump is linked with the ultrapure water-shortage floating ball, after pure water produced by EDI enters the ultrapure water tank, the start of the delivery pump is controlled by the ultrapure water-shortage floating ball, after the ultrapure water-shortage floating ball gives a signal, the water in the ultrapure water tank can be delivered for a period of time, the delivery pump starts to work, the delivery pump delivers the water in the ultrapure water tank to the back, the resistivity can reach 18.25 million after passing through the UV sterilizer and the polishing mixed bed, the water in the delivery pipeline flows around a using point for a circle and then returns to the ultrapure water tank through the delivery backflow pipeline, and the pressure in the pipeline is kept balanced.

The utility model can balance the water inflow and the water consumption; the water production rate of the ultrapure water equipment is high; the operation is stopped immediately when a fault occurs, and the self-protection function is realized; the pressure of the tank body is in a certain range, and the tank body cannot deform; the service life of the motor can be prolonged; the service life of the reverse osmosis membrane is prolonged; the water pressure in the pipeline is within a specified range, and the pipeline is prevented from being broken and leaking water; the ultrapure water device produces stable water.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same principle as the protection scope of the present invention.

Claims (2)

1. An ultrapure water apparatus, characterized by comprising: the system comprises a raw water tank, a first-stage pure water tank, a second-stage pure water tank, a super pure water tank, a concentrated water tank, a first-stage reverse osmosis mechanism, a second-stage reverse osmosis mechanism, an EDI module, an equipment water inlet mechanism, a residual chlorine reduction device, a pretreatment water inlet mechanism, a pretreatment filter, a first-stage reverse osmosis water inlet mechanism, a first-stage reverse osmosis concentrated water outlet mechanism, a PH adjusting device, a second-stage reverse osmosis water inlet mechanism, a second-stage reverse osmosis concentrated water outlet mechanism, an EDI module water inlet mechanism, an EDI module water outlet mechanism and an ultrapure water conveying mechanism;

a raw water tank full water floating ball and a raw water tank water shortage floating ball are arranged in the raw water tank, and a water inlet pipe is arranged at a raw water tank water inlet; the residual chlorine reduction device is connected with the raw water tank, and the PH adjusting device is connected with the first-stage pure water tank; the equipment water inlet mechanism comprises a water feeding electromagnetic valve and a standby valve, the water feeding electromagnetic valve and the standby valve are connected in parallel to a water inlet pipe of the original water tank, a water filling floating ball of the original water tank is connected with the water feeding electromagnetic valve, and the water feeding electromagnetic valve is controlled by the water filling floating ball of the original water tank;

the pretreatment water inlet mechanism comprises a raw water pump, a raw water pump delivery valve, a raw water backflow pipeline and a pretreatment pressure switch, and two ends of the raw water pump are respectively connected with a raw water tank water outlet and a pretreatment filter water inlet through pipelines; the raw water pump is linked with the raw water tank water shortage floating ball, and the raw water tank water shortage floating ball controls the raw water pump to start; the pretreatment pressure switch is arranged on a pipeline between the raw water pump and the pretreatment filter, the raw water pump delivery valve is connected on a pipeline between the raw water pump and the raw water tank, one end of the raw water return pipeline is arranged on a pipeline between the raw water pump and the raw water pump delivery valve, and the other end of the raw water return pipeline is arranged on a pipeline between the raw water pump and the pretreatment pressure switch;

the first-stage reverse osmosis water inlet mechanism comprises a first-stage high-pressure pump, a first-stage high-pressure pump low-pressure protection switch and a first-stage high-pressure pump high-pressure protection switch; two ends of the first-stage high-pressure pump are respectively connected with a water outlet of the pretreatment filter and a water inlet of the first-stage reverse osmosis mechanism, and a low-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the pretreatment filter; the high-pressure protection switch of the first-stage high-pressure pump is arranged between the first-stage high-pressure pump and the first-stage reverse osmosis mechanism;

the first-stage reverse osmosis concentrated water outlet mechanism comprises a first-stage concentrated water discharge pipe, a direct discharge valve, a flushing valve and a concentrated water return valve; the pure water discharge port of the first-stage reverse osmosis mechanism is connected with the first-stage pure water tank, the first-stage concentrated water discharge pipe is connected with the concentrated water discharge port of the first-stage reverse osmosis mechanism, three branch pipes are arranged on the first-stage concentrated water discharge pipe, and the three branch pipes are respectively a straight discharge pipe, a flushing pipe and a concentrated water return pipe; the straight-discharge pipeline is connected with the concentrated water tank, and the straight-discharge valve is arranged on the straight-discharge pipeline; the two ends of the flushing pipeline are connected in parallel to the straight discharging pipelines at the two ends of the straight discharging valve, and the flushing valve is arranged on the flushing pipeline; one end of the concentrated water backflow pipeline is connected with the upper end of the primary concentrated water discharge pipe, the other end of the concentrated water backflow pipeline is connected with the front end of the high-pressure pump, and the concentrated water backflow valve is arranged on the concentrated water backflow pipeline;

a primary pure water full-water floating ball and a primary pure water short-water floating ball are arranged in the primary pure water tank, and the primary pure water full-water floating ball is electrically connected with the raw water pump and the primary high-pressure pump;

the secondary reverse osmosis water inlet mechanism comprises a secondary high-pressure pump and a secondary high-pressure pump high-pressure protection switch, two ends of the secondary high-pressure pump are respectively connected with a water outlet of the primary pure water tank and a water inlet of the secondary reverse osmosis mechanism, and the secondary high-pressure pump is linked with the primary pure water shortage floating ball; a second-stage high-pressure pump return pipeline is arranged in front of and behind the second-stage high-pressure pump, and a second-stage high-pressure pump high-pressure protection switch is arranged at the rear end of the second-stage high-pressure pump;

the second-stage reverse osmosis concentrated water outlet mechanism comprises a second-stage concentrated water return pipeline, a second-stage concentrated water return electromagnetic valve, a second-stage flushing pipeline and a second-stage flushing electromagnetic valve; one end of the second-stage concentrated water backflow pipeline is connected with a concentrated water discharge port of the second-stage reverse osmosis mechanism, the other end of the second-stage concentrated water backflow pipeline is connected with the raw water tank, and the second-stage concentrated water backflow electromagnetic valve is arranged on the second-stage concentrated water backflow pipeline; two ends of the secondary flushing pipeline are connected to secondary concentrated water return pipelines at two ends of a secondary concentrated water return electromagnetic valve, and the secondary flushing electromagnetic valve is arranged on the secondary flushing pipeline;

a second-stage pure water full-water floating ball and a second-stage pure water short-water floating ball are arranged in the second-stage pure water tank, and the second-stage pure water full-water floating ball is electrically connected with the second-stage high-pressure pump;

the EDI module water inlet mechanism comprises an EDI delivery pump and an EDI high-voltage protection switch, the EDI delivery pump is connected between the secondary pure water tank and the EDI module, the secondary pure water-deficient floating ball is electrically connected with the EDI delivery pump, EDI backflow pipelines are arranged in front of and behind the EDI delivery pump, and the EDI high-voltage protection switch is arranged at the rear end of the EDI delivery pump;

the EDI module water outlet mechanism comprises a detection mechanism, an ultrapure water inlet pipe, an ultrapure water return pipe, an ultrapure water inlet electromagnetic valve and an ultrapure water return electromagnetic valve, the detection mechanism is arranged at a water outlet of the EDI module, two ends of the ultrapure water inlet pipe are respectively connected with the water outlet of the EDI module and the ultrapure water tank, the ultrapure water inlet electromagnetic valve is arranged on the ultrapure water inlet pipe, two ends of the ultrapure water return pipe are respectively connected with the second-stage pure water tank and the ultrapure water inlet pipe, and the ultrapure water return electromagnetic valve is arranged on the ultrapure water; an ultrapure water full-water floating ball and an ultrapure water short-water floating ball are arranged in the ultrapure water tank, and the ultrapure water full-water floating ball is linked with the EDI delivery pump;

the ultra-pure water conveying mechanism comprises a conveying pump, a UV sterilizer, a polishing mixed bed, a conveying pipeline and a conveying backflow pipeline, wherein the conveying pump is connected between an ultra-pure water tank and a using point through the conveying pipeline; and the delivery pump is linked with the ultrapure water-shortage floating ball.

2. An ultrapure water apparatus according to claim 1 characterized in that: and a raw water reflux regulating valve is arranged on the raw water reflux pipeline.

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