An ultrapure water preparation device

Abstract

The application provides an ultrapure water preparation device and relates to the field of ultrapure water preparation. The device comprises a rack, the surface of the rack is respectively provided with a plurality of treatment tanks and storage tanks, a plurality of reaction cavities are slidably connected in the treatment tanks on the left side, the water paths of the reaction cavities are not interfered with each other, an electric adsorption electrode group is arranged in each reaction cavity, water flows through the reaction cavities that are not disassembled when a single reaction cavity is disassembled and maintained. A sealed butt joint structure is arranged between each reaction cavity and the treatment tank, and a spring-driven valve core is arranged in the sealed butt joint structure. The ultrapure water preparation device adopts an electric adsorption desalination mode to replace a traditional resin adsorption and EDI membrane stack refining scheme, relies on an electric field to realize physical desalination, has no secondary pollution, has a mild and controllable reaction process, and the electrode can be repeatedly used, the consumption of materials is reduced, the public joint chamfer structure is used to realize accurate sliding alignment, the vertically upward spring-driven valve core is used, and the water pressure of water flow from bottom to top is used to assist in compressing and sealing.

Description

Technical Field

[0001] This invention relates to the field of ultrapure water preparation, specifically to an ultrapure water preparation apparatus. Background Technology

[0002] Ultrapure water requires extremely high purity and stability of the water. EDI membrane stacks, as the core equipment for ultrapure water refining at present, rely on ion exchange membranes and filling resins to remove ions. Its precision consumables are highly sensitive to water quality and electric field environment. The refining process has high requirements for the reliability of pipeline sealing, cavity flow channels and disassembly and docking structures.

[0003] Currently, most existing EDI refining equipment adopts a fixed integrated membrane stack structure, which has strong overall integrity and is difficult to disassemble and maintain. Although a few improved models on the market have added slide rails and sealing joints to assist in disassembly and assembly, and realize simple module pull-out displacement, the equipment must be stopped and the water supply cut off during disassembly and replacement, which makes it impossible to continuously prepare water and results in poor continuous production capacity. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an ultrapure water preparation device that solves the problem of inconvenient disassembly and maintenance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultrapure water preparation device, comprising a frame, wherein a plurality of processing tanks and storage tanks are respectively provided on the surface of the frame; The processing tank located on the left side has several reaction chambers slidably connected inside. The water channels of each reaction chamber do not interfere with each other. Each reaction chamber is equipped with an electro-adsorption electrode group. During the disassembly and maintenance of a single reaction chamber, water flow does not pass through the reaction chamber that has never been disassembled. Each of the reaction chambers and the processing tank is provided with a sealing docking structure. The sealing docking structure is provided with a spring-driven valve core. The valve core sealing surface faces vertically upward, and the water flow from bottom to top causes the water pressure to adhere to the sealing surface. When the reaction chamber is slidably installed, the squeeze valve core moves downward to open the water passage. When pulled out, the valve core springs back to close, achieving independent on / off sealing of a single chamber.

[0006] Preferably, the treatment tank is provided with a foldback channel, which includes a pure water outlet, a concentrated water outlet, and a water inlet. A guide and limiting component is installed between the reaction chamber and the treatment tank.

[0007] Preferably, the sealing connection structure includes a male connector and a female connector that are plugged into each other, with the end of the male connector being chamfered.

[0008] Preferably, the treatment tank located on the right side is equipped with multiple layers of filter media for initial impurity removal in the water.

[0009] Preferably, the storage tanks are configured as four, arranged sequentially from right to left along the frame, for storing raw water, pretreated water, purified ultrapure water and concentrated water respectively, for water classification storage.

[0010] Preferably, the lower end of the storage tank for storing raw water is provided with a first pipe, and the other end of the first pipe passes through the treatment tank located on the right and is connected to a nozzle assembly, with the nozzle assembly spraying water in a downward direction.

[0011] Preferably, the lower end of the treatment tank on the right is connected to a second pipe, and the other end of the second pipe is connected to a storage tank for storing pretreated water.

[0012] Preferably, the storage tank for storing pretreated water is provided with a third pipe at its lower end, and the third pipe is connected to the corresponding water inlet end through a multi-port pipe.

[0013] Preferably, both the pure water outlet and the concentrated water outlet are provided with a first drain pipe, and each first drain pipe is connected to the storage tank.

[0014] Preferably, the lower ends of the two storage tanks located on the left are each provided with a second drain pipe, and the surfaces of the first pipe, the second pipe, the third pipe, the first drain pipe, and the second drain pipe are all provided with a conveying pump.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This ultrapure water preparation device uses two sets of treatment tanks, left and right. The pretreatment tank on the right adopts a multi-layer gradient filter packing structure, which can filter the raw water step by step, intercept suspended particles and colloidal impurities in advance, reduce the turbidity of the influent, reduce the load on the downstream electro-adsorption purification, and effectively avoid the electrode assembly from being blocked and contaminated by impurities.

[0016] 2. With multiple independently removable reaction chambers, the water circuits of each reaction chamber do not interfere with each other. During the maintenance or replacement of a single reaction chamber, the remaining reaction chambers can continue to operate normally with water supply. The equipment does not need to be shut down to cut off the water supply, thus achieving uninterrupted and continuous water production.

[0017] 3. The ultrapure water preparation device is equipped with a sealed docking structure. It relies on the chamfered structure of the male connector to achieve precise sliding alignment. It is combined with the vertically upward-facing spring-driven valve core and uses the water pressure from the bottom up to assist in tightening the seal.

[0018] 4. This ultrapure water preparation device uses electro-adsorption desalination to replace the traditional resin adsorption and EDI membrane stack purification scheme. It relies on the electric field to achieve physical desalination, which has no secondary pollution, the reaction process is mild and controllable, the electrodes can be repeatedly recycled, and the consumption of consumables is reduced. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the frame structure of the present invention; Figure 3 This is a schematic diagram of the front cross-sectional structure of the frame of the present invention; Figure 4 This is a schematic diagram of the front cross-sectional structure of the reaction chamber of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the spring-driven valve core of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the storage tank of the present invention; Figure 7 This is a schematic diagram of the overall structure of the reaction chamber of the present invention; Figure 8 This is a schematic diagram of the left-side cross-sectional structure of the frame of the present invention; Figure 9 This is a schematic diagram of the left-side cross-sectional structure of the rack processing tank of the present invention.

[0020] The components include: 1. Frame; 2. Processing tank; 3. Storage tank; 4. Reaction chamber; 5. Electroadsorption electrode assembly; 6. Sealed docking structure; 601. Male connector; 602. Female connector; 7. Spring-driven valve core; 8. Reversible flow channel; 801. Pure water outlet; 802. Concentrated water outlet; 803. Water inlet; 9. Guide and limit assembly; 10. First pipe; 11. Nozzle assembly; 12. Second pipe; 13. Third pipe; 14. First drain pipe; 15. Second drain pipe. Detailed Implementation

[0021] like Figures 1-9 As shown, an ultrapure water preparation device includes a frame 1, and a plurality of processing tanks 2 and storage tanks 3 are respectively provided on the surface of the frame 1.

[0022] The treatment tank 2 on the left side has several slidingly connected reaction chambers 4. The water channels in each reaction chamber 4 do not interfere with each other, allowing for independent horizontal pull-out and disassembly operations. Each reaction chamber 4 is equipped with an electro-adsorption electrode assembly 5, which completes the ion adsorption desalination treatment of the water by relying on the electro-adsorption electric field. This replaces the traditional treatment tank 2 which contains an EDI treatment tank 2 with a membrane stack and resin consumables. It eliminates the aging of easily consumable materials. The electro-adsorption electrode assembly 5 is divided into five cavities by vertically arranged baffles. The baffles are made of insulating microporous material, which can prevent the main water flow from flowing horizontally and only allow charged ions and tiny impurities in the water to penetrate the gaps between the baffles. Under the action of electro-adsorption, a flow channel partition is formed as shown in the figure. The five cavities are arranged in sequence and functionally divided. The first, third and fifth cavities are concentrated water cavities, and the second and fourth cavities are pure water cavities. When the power is turned on, the electrodes on both sides establish an electric field. Charged impurities and salt ions in the water are attracted by the electric field and migrate directionally from the middle chamber to both sides and pass through the partition. They are enriched in the first, third and fifth cavities to form high-salt concentrated water. The remaining clean water is retained in the second and fourth cavities to form refined ultrapure water. Relying on the water-blocking and ion-permeable properties of the partition, the concentrated water and pure water are separated and flowed in separate zones and separated synchronously.

[0023] When any single reaction chamber 4 needs to be disassembled for maintenance, repair or replacement, the remaining undisassembled reaction chambers 4 will still maintain normal water supply. The water flow can automatically circulate normally inside the undisassembled reaction chambers 4. The whole machine does not need to be shut down to cut off the water supply, and can achieve uninterrupted continuous water production operation, effectively avoiding the problem that traditional refining equipment must be shut down for disassembly and maintenance.

[0024] Each reaction chamber 4 is connected to the treatment tank 2 by a sealing docking structure 6. The sealing docking structure 6 is equipped with a spring-driven valve core 7. The valve core sealing surface is vertically upward. The water flow from bottom to top makes the water pressure fit the sealing surface. The water flow in the tank is arranged from bottom to top, so that the static pressure of the water always acts positively and fits and presses the valve core sealing surface tightly. The water pressure is used to help improve the sealing performance. During the installation and docking process of reaction chamber 4, the valve core 7 is driven by the end structure compression spring, which compresses the internal spring and drives the valve core to move downward to open the flow channel, automatically realizing the rapid conduction of water circuit; when reaction chamber 4 is pulled outward and disengaged from the compression docking position, the valve core automatically resets upward and closes under the action of its own spring force, cutting off the water flow in the corresponding chamber, realizing the independent water circuit opening and closing and self-sealing isolation of a single set of reaction chamber 4, without affecting the normal operation of other chambers.

[0025] The treatment tank 2 is equipped with a reversing flow channel 8, which includes a pure water outlet 801, a concentrated water outlet 802, and a water inlet 803. A guide and limiting component 9 is installed between the reaction chamber 4 and the treatment tank 2. This component guides and limits the horizontal sliding movement of the reaction chamber 4, ensuring that the insertion and removal of the reaction chamber 4 is smooth and accurate, and that the sealing connection structure 6 is reliably aligned and inserted. At the same time, it limits the deviation and shaking of the reaction chamber 4 during operation, ensuring the water circuit connection seal and the overall stability of the machine.

[0026] The inlet 803 is connected to the lower water channel of the reaction chamber 4 to provide pretreated raw water to the chamber. The pure water outlet 801 and the concentrated water outlet 802 are respectively connected to the pure water chamber and the concentrated water chamber of the electroadsorption electrode group 5, so that the pure water and concentrated water separated by electric field adsorption can be independently exported.

[0027] The sealing docking structure 6 includes a male connector 601 and a female connector 602 that are plugged into each other. The end of the male connector 601 is chamfered. Through the chamfered guide setting, the male connector 601 and the female connector 602 can be automatically aligned and smoothly plugged in during the horizontal sliding insertion and removal process of the reaction chamber 4, avoiding misalignment and jamming. After being plugged in, a closed water circuit is formed. With the help of the internal spring-driven valve core 7, a self-sealing on and off function is achieved, ensuring accurate water circuit docking during sliding and disassembly.

[0028] The treatment tank 2 on the right is equipped with multiple layers of filter media for the initial interception of impurities in the water. The filter media of different specifications form a gradient filtration layer from top to bottom, which can sequentially intercept and filter suspended particulate matter, colloidal impurities and macromolecular pollutants in the raw water fed into the tank, thereby achieving preliminary purification and turbidity reduction of the water, removing large particulate impurities in advance, and reducing the treatment load of the electro-adsorption purification unit on the left.

[0029] There are four storage tanks 3, which are arranged from right to left along the frame 1. They are used to store raw water, pretreated water, purified ultrapure water and concentrated water respectively, for water classification and storage.

[0030] The lower end of the storage tank 3 for storing raw water is provided with a first pipe 10. The other end of the first pipe 10 passes through the treatment tank 2 located on the right and is connected to a nozzle group 11. The nozzle group 11 sprays water downwards, which can evenly spray and disperse the raw water into the packing layer inside the treatment tank 2 on the right, avoiding the direct flow of water causing the packing to deviate and compact, and ensuring a uniform and stable filtration effect layer by layer.

[0031] The lower end of the treatment tank 2 located on the right is connected to the second pipe 12. The other end of the second pipe 12 is connected to the storage tank 3 for storing pretreated water. The water that has been filtered through multiple layers of packing material can be smoothly channeled into the corresponding storage tank 3 for temporary storage.

[0032] The lower end of the storage tank 3 for storing pretreated water is provided with a third pipe 13. The third pipe 13 is connected to the corresponding water inlet 803 through a multi-port pipe, which can independently and uniformly supply water to each reaction chamber 4, meeting the water inlet requirements of multiple reaction chambers 4 working in parallel at the same time without interfering with each other.

[0033] Both the pure water outlet 801 and the concentrated water outlet 802 are equipped with a first drain pipe 14, and each first drain pipe 14 is connected to the storage tank 3 for the independent transportation and partitioned storage of the purified ultrapure water and high-salt concentrated water after electro-adsorption separation.

[0034] The lower ends of the two storage tanks 3 on the left are equipped with second drain pipes 15, which facilitates the later external water supply or centralized discharge of concentrated water. The surfaces of the first pipe 10, the second pipe 12, the third pipe 13, the first drain pipe 14 and the second drain pipe 15 are all equipped with conveying pumps, which provide stable power for the water conveyance, circulation and diversion and directional water supply of the whole set of equipment, and realize the controllable and orderly flow of water in each pipeline.

[0035] During use, the frame 1 is used to integrate and fix each tank. The raw water is first stored in the storage tank 3 on the far right. Driven by the power of the delivery pump, the raw water is transported to the treatment tank 2 on the right through the first pipeline 10. The treatment tank 2 on the right is a pretreatment tank 2. The tank is equipped with multiple layers of filter media. The raw water is sprayed vertically downward through the nozzle group 11 and evenly distributed inside the media layer. The water flows from top to bottom and filters layer by layer, intercepting suspended particles, colloidal impurities and macromolecular pollutants in the water in turn, reducing the turbidity of the raw water and completing the water pretreatment operation.

[0036] After pretreatment, the water is temporarily stored in the pretreated water storage tank 3 through the second pipe 12 from the bottom of the right treatment tank 2. The pretreated water is transported through the third pipe 13 by the delivery pump and is diverted through the multi-port pipe, connecting the inlet end 803 of each turnaround channel 8 inside the left treatment tank 2, so as to realize the parallel uniform water supply of the multiple reaction chambers 4.

[0037] The left-side processing tank 2 is a refined tank body. Inside the tank body, multiple sets of independently pull-out reaction chambers 4 are slidably assembled. The water circuits of each reaction chamber 4 do not interfere with each other. With the cooperation of the guide and limit assembly 9, the reaction chamber 4 slides and inserts smoothly. The end of the male connector 601 is chamfered to facilitate automatic alignment. During the insertion process, the compression spring drives the valve core 7 to move down, and the water circuit is automatically opened. When pulled out for maintenance, the valve core spring resets and automatically cuts off the water, realizing independent on and off of a single chamber. The equipment can be disassembled and maintained without stopping the machine.

[0038] After entering the reaction chamber 4, the water flows into the electroadsorption electrode assembly 5. The electroadsorption electrode assembly 5 is divided into five cavities by insulating microporous partitions. The partitions have water-blocking and ion-permeable properties. Relying on the microporous structure and fluid surface tension, the main water flow is blocked from flowing laterally, allowing only charged ions and tiny impurities to penetrate the partitions. When energized, ions migrate in a directional manner under the adsorption of the electric field, forming a split state as shown in the figure. The first, third, and fifth chambers are concentrated water chambers, and the second and fourth chambers are pure water chambers. Salt ions and charged impurities in the water move towards the electrodes on both sides under the attraction of the electric field and accumulate in the odd-numbered chambers to form high-salt concentrated water. The clean water after desalination and purification remains in the even-numbered chambers to form ultrapure water.

[0039] The separated concentrated water and ultrapure water are discharged through the concentrated water outlet 802 and pure water outlet 801 of the reversing flow channel 8, respectively, and then sent to the corresponding storage tanks 3 through the first drain pipe 14 for graded storage. The two leftmost storage tanks 3 are equipped with second drain pipes 15 at their lower ends for external transportation of pure water and centralized discharge and treatment of concentrated water. The entire set of equipment continuously produces water through pretreatment filtration, electroadsorption graded desalination, and separate tank storage. At the same time, it relies on the pluggable reaction chamber 4 structure to achieve non-stop maintenance. The overall process is continuous and the water path is clear, which effectively improves the continuity and production efficiency of ultrapure water preparation.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrapure water preparation apparatus, comprising a frame (1), characterized in that: The surface of the rack (1) is provided with a number of processing tanks (2) and storage tanks (3); The processing tank (2) located on the left side has several reaction chambers (4) slidably connected inside. The water channels of each reaction chamber (4) do not interfere with each other. Each reaction chamber (4) is equipped with an electroadsorption electrode group (5). When a single reaction chamber (4) is disassembled for maintenance, water flows through the reaction chamber (4) that has never been disassembled. Each of the reaction chambers (4) and the treatment tank (2) is provided with a sealing docking structure (6), and the sealing docking structure (6) is provided with a spring-driven valve core (7). The valve core sealing surface is vertically upward, and the water flow from bottom to top makes the water pressure adhere to the sealing surface. When the reaction chamber (4) is slidably installed, the valve core is squeezed down to open the water passage. When it is pulled out, the valve core is elastically reset and closed, realizing independent on / off sealing of a single chamber.

2. The ultrapure water preparation apparatus according to claim 1, characterized in that: The processing tank (2) is provided with a reversing flow channel (8), which includes a pure water outlet (801), a concentrated water outlet (802) and an inlet (803). A guide limiting component (9) is installed between the reaction chamber (4) and the processing tank (2).

3. The ultrapure water preparation apparatus according to claim 1, characterized in that: The sealing docking structure (6) includes a male connector (601) and a female connector (602) that are plugged into each other, and the end of the male connector (601) is chamfered.

4. The ultrapure water preparation apparatus according to claim 1, characterized in that: The treatment tank (2) located on the right side is equipped with multiple layers of filter media for the initial interception of impurities in the water.

5. The ultrapure water preparation apparatus according to claim 2, characterized in that: The storage tanks (3) are set to four and arranged from right to left along the frame (1), respectively for storing raw water, pretreated water, purified ultrapure water and concentrated water, for water body classification storage.

6. The ultrapure water preparation apparatus according to claim 5, characterized in that: The lower end of the storage tank (3) for storing raw water is provided with a first pipe (10), and the other end of the first pipe (10) passes through the treatment tank (2) located on the right and is connected to a nozzle group (11), and the nozzle group (11) sprays water downwards.

7. The ultrapure water preparation apparatus according to claim 5, characterized in that: The lower end of the treatment tank (2) located on the right is connected to a second pipe (12), and the other end of the second pipe (12) is connected to a storage tank (3) for storing pretreated water.

8. The ultrapure water preparation apparatus according to claim 5, characterized in that: The storage tank (3) for storing pretreated water is provided with a third pipe (13) at its lower end. The third pipe (13) is connected to the corresponding water inlet (803) through a multi-port pipe.

9. The ultrapure water preparation apparatus according to claim 5, characterized in that: Both the pure water outlet (801) and the concentrated water outlet (802) are equipped with a first drain pipe (14), and each first drain pipe (14) is connected to the storage tank (3).

10. The ultrapure water preparation apparatus according to claim 6, characterized in that: The lower ends of the two storage tanks (3) located on the left are provided with second drain pipes (15), and the surfaces of the first pipe (10), second pipe (12), third pipe (13), first drain pipe (14) and second drain pipe (15) are all provided with conveying pumps.

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