An edl concentrated water recycling device

Abstract

The application relates to the technical field of EDI concentrated water treatment, in particular to an EDI concentrated water recycling device, which comprises a collection and treatment unit, and further comprises a raw water tank, a filtering unit, a reverse osmosis unit and an EDI unit which are sequentially connected; the raw water tank is provided with a tap water interface connected with external tap water; the EDI unit is provided with a pure water outlet and a concentrated water outlet; the concentrated water outlet is connected with the collection and treatment unit through a connecting pipeline; the collection and treatment unit is used for treating EDI concentrated water; and the collection and treatment unit inputs the treated concentrated water into the raw water tank again through a backflow pipe. Through the arrangement of the collection and treatment unit, the EDI concentrated water can be treated, and the treated concentrated water can be input into the raw water tank again, so that the recycling device can recycle the EDI concentrated water, the raw water can be saved, the concentrated water discharge amount and the sewage cost can be reduced, and the operation cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of EDI concentrated water treatment, in particular to an EDI concentrated water recycling device. BACKGROUND

[0002] EDI (continuous electrolytic desalination technology) pure water preparation technology is a pure water manufacturing technology combining ion exchange technology, ion exchange membrane technology and ion transference technology. It combines electrodialysis and ion exchange technology, uses high voltage of electrodes at both ends of a reaction chamber to move charged ions in water, and cooperates with ion exchange resin and selective resin membrane to accelerate ion movement and removal, so as to achieve the purpose of water purification. In the EDI desalination process, about 10% of concentrated water is generated. The salt, organic matter and hardness of the EDI concentrated water are relatively low compared with tap water. Direct reuse of the EDI concentrated water will cause irreversible damage of reverse osmosis membranes and EDI membranes due to oxidation. Direct discharge will also waste water resources. At present, the EDI concentrated water is directly discharged into a sewage system and then discharged. This method not only wastes water resources, but also increases sewage discharge costs. Therefore, it needs to be improved. SUMMARY

[0003] The present application aims to provide an EDI concentrated water recycling device to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] An EDI concentrated water recycling device comprises a collection and treatment unit, and further comprises a raw water tank, a filtration unit, a reverse osmosis unit and an EDI unit connected in sequence. The raw water tank is provided with a tap water interface connected with external tap water. The EDI unit is provided with a pure water outlet and a concentrated water outlet. The concentrated water outlet is connected with the collection and treatment unit through a connecting pipeline. The collection and treatment unit is used for treating EDI concentrated water. The collection and treatment unit inputs the treated concentrated water into the raw water tank again through a backflow pipe.

[0006] Further, the collection and treatment unit comprises a collection tank. A top wall of the collection tank is provided with a water inlet assembly and a dosing assembly arranged around the water inlet assembly. The water inlet assembly comprises a water inlet hopper. The dosing assembly comprises a dosing ring box in which a dosing cavity is arranged. A lower side surface of the dosing ring box is uniformly provided with a dosing member. The collection tank is provided with a stirring assembly. The stirring assembly comprises a stirring shaft which is rotatably arranged. The stirring shaft is uniformly provided with a stirring plate. The stirring shaft is provided with a first driving member. The stirring shaft is rotated to drive the first driving member to dose the dosing member into the collection tank at intervals. The collection tank is further provided with a plug flow assembly arranged below the dosing member. The plug flow assembly comprises a mounting frame arranged along the radial direction of the collection tank. The mounting frame is provided with a plug flow plate which is slidably arranged. The stirring shaft is provided with a second driving member. The second driving member is used to drive the plug flow plate to reciprocate in the mounting frame.

[0007] Furthermore, the upper end of the stirring shaft extends into the water inlet hopper, and an impeller is provided at the end of the stirring shaft that extends into the water inlet hopper.

[0008] Furthermore, a motor for driving the stirring shaft to rotate is installed on the bottom wall of the collection tank.

[0009] Furthermore, the quantitative dosing device includes a dosing cylinder with an open top. The dosing cylinder has an upper cavity and a lower cavity arranged from top to bottom. A fixing ring is provided on the side wall of the lower cavity, and a dispensing slot is provided on the side wall of the lower cavity below the fixing ring. A first piston for sealing the dispensing slot is provided in the lower cavity below the fixing ring via a first spring. A second piston for sealing the lower cavity is provided in the lower cavity above the fixing ring via a second spring. A push rod is provided on the lower side of the second piston, which abuts against the first piston. A liftable third piston is provided in the upper cavity. The third piston has a dispensing hole distributed on it. The second piston has a through hole that is offset from the dispensing hole. The third piston has a lifting rod that passes through the second piston and extends out of the dosing cylinder. A first driving member is used to drive the lifting rod to move up and down to realize the quantitative dosing device adding medicine into the collection tank.

[0010] Furthermore, the first drive assembly includes a drive ring arranged circumferentially along the collection tank. The drive ring is fixedly mounted on the stirring shaft by a mounting post. The drive ring is provided with a drive groove. The extended end of the lifting rod is provided with a drive post that slides into the drive groove. The stirring shaft drives the drive ring to rotate, thereby driving the drive post to slide along the drive groove, thus realizing the lifting and lowering of the lifting rod.

[0011] Furthermore, the upper and lower sidewalls of the mounting frame are provided with grooves along the radial direction of the collection tank, and the two ends of the pusher plate are provided with sliders that slide into the corresponding grooves. The mounting frame is provided with tension springs for pulling the pusher plate into the collection tank. The lower sidewall of the mounting frame is provided with a strip groove, and the slider located on the lower side is provided with a lever that extends out of the sliding groove. The second driving member is used to push the lever to slide back and forth along the strip groove.

[0012] Furthermore, the second drive assembly includes a rotating ring plate fixedly connected to the outside of the stirring shaft via a connecting rod. The rotating ring plate has grooves evenly distributed for corresponding levers to slide into. Guide slopes are provided on both sides of the grooves. The rotation of the stirring shaft drives the rotating ring plate to rotate, thereby driving the levers to slide into or out of the grooves along the guide slopes, so as to realize the levers reciprocating along the sliding groove.

[0013] Furthermore, a fixing block is provided on the inner wall of the collection tank along its height direction, and a limiting groove is provided on the outer wall of the fixing block along its height direction. A slot is provided on one side wall of the mounting frame for the corresponding fixing block to be inserted into. A limiting block is provided on the side wall of the slot to slide into the corresponding limiting groove. The lower end of the lifting rod is connected to the corresponding mounting frame.

[0014] Furthermore, the bottom wall of the collection tank and its surrounding area are provided with support legs for supporting it.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention, through the setting of a collection and processing unit, enables it to process EDI concentrate and then input the processed concentrate back into the raw water tank, thereby enabling the recycling device to recycle EDI concentrate, which saves raw water, reduces the amount of concentrate discharged and sewage discharge costs, and lowers operating costs.

[0017] 2. In this invention, concentrated water is added to the collection tank through the inlet hopper, which drives the stirring shaft to rotate, thereby driving the stirring assembly to stir and mix the mixture in the collection tank. At the same time, it can drive the metering dosing device to add the reducing agent solution to the collection tank at intervals, so that the concentrated water and the reducing agent solution are mixed, which facilitates the reaction between the two, so that the concentrated water is treated and can be easily fed back into the raw water tank.

[0018] 3. In this invention, by setting up the flow propulsion component, when the stirring shaft rotates and drives the stirring plate to stir and mix, the rotation of the stirring shaft can drive the flow propulsion component to reciprocate along the radial direction of the collection tank to push the concentrated water and reducing agent solution to flow, thereby generating turbulence in the mixture in the collection tank, making its mixing effect better, and thus improving the treatment effect of the concentrated water. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the system principle of an EDI concentrate recovery and utilization device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the collection and processing unit in this invention.

[0021] Figure 3 This is a cross-sectional schematic diagram of the collection and processing unit in this invention.

[0022] Figure 4 This is a schematic diagram of the quantitative drug dosing component in this invention.

[0023] Figure 5 This is a cross-sectional schematic diagram of the quantitative drug dosing device in this invention.

[0024] Figure 6 This is a schematic diagram of the structure of the stirring assembly, the first driving member, and the second driving member in this invention.

[0025] Figure 7 This is a partial exploded structural diagram of the propulsion component in this invention.

[0026] Figure 8 This is a schematic diagram of the propulsion component in this invention.

[0027] The labels in the diagram represent the following: 100, Collection tank; 101, Support leg; 102, Motor; 103, Drain pipe; 104, Dosing pipe; 110, Water inlet hopper; 120, Drug storage ring box; 201, Drug storage chamber; 202, Fixing block; 210, Stirring shaft; 211, Stirring plate; 212, Impeller; 220, Mounting frame; 221, Pusher plate; 230, Dosing cylinder; 240, Drive ring; 301, Drug outlet; 310, Third piston; 311, Drug inlet; 312, Lifting rod; 313, Drive column; 41 1. Upper cavity; 412. Lower cavity; 413. Fixing ring; 420. First spring; 430. First piston; 440. Second spring; 450. Second piston; 451. Push rod; 452. Through hole; 511. Mounting post; 512. Upper sliding groove; 513. Lower sliding groove; 514. Inclined sliding groove; 520. Rotary ring plate; 521. Groove; 522. Guide slope; 530. Connecting rod; 611. Sliding groove; 612. Slot; 621. Slider; 622. Toggle rod; 630. Tension spring; 711. Strip groove. Detailed Implementation

[0028] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0029] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.

[0030] like Figure 1 As shown, an EDI concentrate recycling device in this embodiment includes a collection and treatment unit, and further includes a raw water tank, a filtration unit, a reverse osmosis unit, and an EDI unit connected in sequence. The raw water tank is provided with a tap water interface for connecting to external tap water. The EDI unit is provided with a pure water outlet and a concentrate outlet. The concentrate outlet is connected to the collection and treatment unit through a connecting pipe, so that the concentrate generated by the EDI unit can enter the collection and treatment unit for treatment. The collection and treatment unit returns the treated concentrate to the raw water tank through a return pipe. Therefore, the EDI concentrate recycling device can recycle and reuse EDI concentrate, which saves raw water, reduces the amount of concentrate discharged and sewage discharge costs, and lowers operating costs.

[0031] The filtration unit is an existing filtration device that can remove impurities such as particulate matter, organic matter, colloids, and color from the raw water, ensuring that the feed water indicators of the reverse osmosis unit meet the relevant requirements.

[0032] The reverse osmosis unit is an existing structure, and its function is to perform primary desalination, reduce the desalination load of the subsequent EDI unit, and ensure the quality of the final EDI product water.

[0033] The EDI unit is an existing structure, and its function is to further remove salt from the water so that the resistivity of the produced water reaches more than 15 MΩ·cm, which meets the relevant standards for pure water.

[0034] The collection and processing unit can add a reducing agent to the collected EDI concentrate, thereby causing it to react with the EDI concentrate and allowing it to be reintroduced into the raw water tank for recycling.

[0035] like Figures 2-3 As shown, in this embodiment, the collection and processing unit includes a collection tank 100. The top wall of the collection tank 100 is provided with a water inlet assembly and a dosing assembly provided around the water inlet assembly. The water inlet assembly includes a water inlet hopper 110, and the dosing assembly includes a dosing ring box 120 with a dosing storage chamber 201 inside. A quantitative dosing device is evenly distributed on the lower side of the dosing ring box 120.

[0036] In actual use, the drug storage ring box 120 is arranged around the top of the collection tank 100 along the circumference of the collection tank 100, and a dosing pipe 104 is provided on it to communicate with the drug storage chamber 201. The dosing pipe 104 can be used to replenish the reducing agent solution into the drug storage ring box 120.

[0037] The metering dosing device enables the reducing agent solution to be added to the collection tank 100 in a metered manner, so that the concentrated water entering the collection tank 100 reacts with the reducing agent solution, and the concentrated water is then fed back into the raw water tank.

[0038] In this embodiment, the collection tank 100 is provided with a stirring assembly, which includes a rotatable stirring shaft 210, stirring plates 211 evenly distributed on the stirring shaft 210, and a first driving member on the stirring shaft 210. The rotation of the stirring shaft 210 is used to drive the first driving member to drive the metered dosing device to add drugs into the collection tank 100 at intervals. The collection tank 100 is also provided with a flow propulsion assembly located below the corresponding metered dosing device. The flow propulsion assembly includes a mounting frame 220 arranged radially along the collection tank 100, a slidable flow propulsion plate 221 provided in the mounting frame 220, and a second driving member on the stirring shaft 210. The second driving member is used to drive the flow propulsion plate 221 to reciprocate within the mounting frame 220.

[0039] In actual use, the stirring shaft 210 is arranged along the axial direction of the collection tank 100 at the center of the collection tank 100. The rotation of the stirring shaft 210 drives the stirring plate 211 to rotate, so that the concentrated water and reducing agent solution in the collection tank 100 can be stirred and mixed, thereby facilitating the reaction between the two.

[0040] The first driving component is configured such that the rotation of the stirring shaft 210 can drive the first driving component to drive the quantitative dosing component to do quantitative dosing into the collection tank 100 at intervals.

[0041] In actual use, in order to ensure that the reducing agent solution added to the collection tank 100 by the metered dosing device can fully mix and react with the concentrated water, the device is equipped with a flow propulsion component and a second driving component. When the stirring shaft 210 rotates and drives the stirring plate 211 to stir and mix, the rotation of the stirring shaft 210 can drive the flow propulsion component to reciprocate along the radial direction of the collection tank 100 to push the concentrated water and reducing agent solution to flow, thereby generating turbulence in the mixture in the collection tank 100 and making its mixing effect better.

[0042] In this embodiment, the upper end of the stirring shaft 210 extends into the water inlet 110, and an impeller 212 is provided at the end of the stirring shaft 210 that extends into the water inlet 110.

[0043] With the structure in this embodiment, the concentrated water generated by the EDI unit flows into the collection tank 100 through the water inlet 110. The water flow can drive the impeller 212 to rotate the stirring shaft 210. Thus, the water flow when the concentrated water is added into the collection tank 100 can drive the stirring component, the metering dosing component and the propulsion component to work synchronously, so that the collection tank 100 has a better treatment effect on the concentrated water.

[0044] It should be noted that different flow rates of concentrated water through the inlet hopper 110 can drive different rotation speeds of the impeller 212. Even if the rotation speed of the stirring shaft 210 is different, the rotation of the stirring shaft 210 can drive the first driving component to drive the metering dosing component to do metered dosing into the collection tank 100 at intervals. This allows the metering dosing component to increase the amount of dosing into the collection tank 100 as the flow rate of the concentrated water entering the collection tank 100 increases.

[0045] Of course, in order to ensure that the stirring assembly, metering dosing assembly and the propulsion assembly can work synchronously when the concentrated water flows through the inlet hopper 110 and cannot drive the impeller 212 to rotate, the bottom wall of the collection tank 100 is provided with a motor 102 for driving the stirring shaft 210 to rotate. The motor 102 can better drive the stirring shaft 210 to rotate. The bottom wall of the collection tank 100 and its surrounding area are provided with support legs 101 for supporting it, so that the motor 102 and the drain pipe 103 can be installed at the bottom wall of the collection tank 100. The drain pipe 103 is connected to the return pipe. In actual use, the drain pipe 103 is equipped with a switch valve. When the concentrated water in the collection tank 100 is treated, the switch valve is opened to allow the treated concentrated water to flow into the raw water tank through the drain pipe 103 and the return pipe.

[0046] In actual use, the water inlet hopper 110 is provided with a mounting bracket for installing the stirring shaft 210. The stirring shaft 210 is rotatably mounted on the mounting bracket through a bearing, thereby better realizing the rotatable installation of the stirring shaft 210 in the collection tank 100.

[0047] CombinationFigures 4-5 As shown, in this embodiment, the metering dosing device includes a dosing cylinder 230 with an open top. The dosing cylinder 230 has an upper cavity 411 and a lower cavity 412 arranged from top to bottom. A fixing ring 413 is provided on the side wall of the lower cavity 412. A dispensing slot 301 is provided on the side wall of the lower cavity 412 below the fixing ring 413. A first piston 430 for sealing the dispensing slot 301 is provided in the lower cavity 412 below the fixing ring 413 via a first spring 420. A second piston 440 for sealing the lower cavity 412 above the fixing ring 413 is provided in the lower cavity 412 above the fixing ring 413 via a second spring 440. The cavity 412 is sealed by a second piston 450. The lower side of the second piston 450 is provided with a push rod 451 that abuts against the first piston 430. The upper cavity 411 is provided with a liftable third piston 310. The third piston 310 is provided with a drug inlet hole 311. The second piston 450 is provided with a through hole 452 that is misaligned with the drug inlet hole 311. The third piston 310 is provided with a lifting rod 312 that passes through the second piston 450 and the first piston 430 and extends out of the dosing cylinder 230. The first driving member is used to drive the lifting rod 312 to lift and lower to realize the quantitative dosing component adding medicine into the collection tank 100.

[0048] In this embodiment, the diameter of the upper cavity 411 is smaller than the diameter of the lower cavity 412, thus forming a step at the connection between the two. This allows the second spring 440 to push the second piston 450 upward, and when it abuts against the step, the second piston 450 can block the lower cavity 412. Meanwhile, when the first spring 420 pushes the first piston 430 against the fixing ring 413, the medicine outlet 301 is blocked. At this time, a temporary storage cavity of fixed volume is formed between the first piston 430 and the second piston 450.

[0049] The arrangement of the third piston 310, inlet hole 311, through hole 452, top rod 451, and lifting rod 312 ensures that, in actual use, the lifting rod 312 slides and seals through the second piston 450, the first piston 430, and the dosing cylinder 230. The dosing cylinder 230 is fixedly installed on the top wall of the collection tank 100 and connects to the storage chamber 201. When the first driving member drives the lifting rod 312 to its highest point, the third piston 310 also moves to its highest point within the upper cavity 411. At this time, the reducing agent solution in the storage chamber 201 flows into the temporary storage chamber through the inlet hole 311 and through hole 452. When the stirring shaft 210 rotates, it drives the first driving member to move the lifting rod 312 downward, which in turn moves the third piston 310 downward to fit against the second piston 450. Due to the misalignment of the inlet hole 311 and through hole 452, the inlet hole 311 is closed. The first driving component continues to drive the lifting rod 312 downward, enabling the top rod 451 to abut against the first piston 430. This causes the first piston 430, the second piston 450, and the third piston 310 to move downward synchronously, thereby opening the drug outlet 301. This allows the reducing agent solution in the temporary storage chamber to flow out from the drug outlet 301 into the collection tank 100, thus completing the quantitative addition of the drug to the collection tank 100. After the addition is completed, the stirring shaft 210 rotates, driving the first driving component to drive the lifting rod 312 upward to reset. During the upward reset process of the lifting rod 312, the first piston 430 first moves upward under the action of the first spring 420, closing the drug outlet 301. Then, the second piston 450 and the third piston 310 separate, opening the drug inlet 311. The reducing agent solution in the drug storage chamber 201 flows back into the temporary storage chamber, allowing it to be quantitatively added to the collection tank 100 again.

[0050] Combination Figure 5 As shown, in this embodiment, the first driving component includes a driving ring 240 arranged circumferentially along the collection tank 100. The driving ring 240 is fixedly installed on the stirring shaft 210 by a mounting post 511. The driving ring 240 is provided with a driving groove. The extended end of the lifting rod 312 is provided with a driving post 313 that slides into the driving groove. The stirring shaft 210 drives the driving ring 240 to rotate, thereby driving the driving post 313 to slide along the driving groove, thus realizing the lifting of the lifting rod 312.

[0051] In practical use, the drive chute in this embodiment includes an upper sliding groove 512 and a lower sliding groove 513 arranged circumferentially on the upper and lower sides of the drive ring 240. The corresponding ends of the upper sliding groove 512 and the lower sliding groove 513 are connected by an inclined sliding groove 514. With the above structure, when the stirring shaft 210 drives the drive ring 240 to rotate, it can drive the drive column 313 to slide and switch between the upper sliding groove 512 and the lower sliding groove 513 along the inclined sliding groove 514. Thus, the lifting rod 312 is raised and lowered. Both the upper sliding groove 512 and the lower sliding groove 513 have a certain curvature, which allows the inlet hole 311 and the outlet groove 301 to remain open for a certain period of time during actual use, so that the reducing agent solution can fill the temporary storage chamber or allow the reducing agent solution in the temporary storage chamber to flow out fully. Therefore, in order to ensure that the reducing agent solution fills the temporary storage chamber or allows the reducing agent solution in the temporary storage chamber to flow out fully, the stirring shaft 210 has a maximum rotational speed. In this embodiment, the rotational speed of the stirring shaft 210 driven by the water flow does not exceed the maximum rotational speed of the stirring shaft 210.

[0052] Combination Figures 7-8 As shown, in this embodiment, the upper and lower sidewalls of the mounting frame 220 are provided with grooves 611 radially along the collection tank 100. The two ends of the pusher plate 221 are provided with sliders 621 that slide into the corresponding grooves 611. The mounting frame 220 is provided with tension springs 630 for pulling the pusher plate 221 into the collection tank 100. The lower sidewall of the mounting frame 220 is provided with a strip groove 711. The slider 621 located on the lower side is provided with a lever 622 that extends out of the strip groove 711. The second driving member is used to push the lever 622 to slide back and forth along the strip groove 711.

[0053] With the structure in this embodiment, the cross section of the slide groove 611 is T-shaped, and the slider 621 cooperates with the slide groove 611 and is also T-shaped. Thus, the slider 621 slides within the slide groove 611, which can better achieve stable sliding of the push plate 221 within the mounting frame 220.

[0054] The tension spring 630, the strip groove 711, the lever 622, and the second driving component are configured such that the tension spring 630 pulls the pusher plate 221 toward the stirring shaft 210, which allows the lever 622 to slide to one end of the strip groove 711. The rotation of the stirring shaft 210 drives the second driving component to push the lever 622 to slide between the two ends of the strip groove 711, thereby realizing the reciprocating sliding of the pusher plate 221 within the mounting frame 220, which pushes the mixture in the collection tank 100 and causes it to generate turbulence.

[0055] Combination Figure 5As shown, in this embodiment, the second driving component includes a rotating ring plate 520 fixedly connected to the outside of the stirring shaft 210 via a connecting rod 530. The rotating ring plate 520 has grooves 521 evenly distributed on it for corresponding levers 622 to slide into. The two side walls of the grooves 521 are provided with guide slopes 522. The rotation of the stirring shaft 210 drives the rotating ring plate 520 to rotate, thereby driving the levers 622 to slide into or out of the grooves 521 along the guide slopes 522, so as to realize the reciprocating sliding of the levers 622 along the strip groove 711.

[0056] With the structure in this embodiment, in actual use, the rotation of the stirring shaft 210 can drive the rotating ring plate 520 to rotate. With the action of the tension spring 630, the lever 622 is better driven to slide into or out of the groove 521 along the guide slope 522, thereby realizing the reciprocating sliding of the pusher plate 221 in the mounting frame 220.

[0057] Combination Figure 2 , 7 As shown in Figure 8, in this embodiment, a fixing block 202 is provided on the inner wall of the collection tank 100 along its height direction, and a limiting groove is provided on the outer wall of the fixing block 202 along its height direction. A slot 612 is provided on one side wall of the mounting frame 220 for the corresponding fixing block 202 to be inserted into. A limiting block is provided on the side wall of the slot 612 to slide into the corresponding limiting groove. The lower end of the lifting rod 312 is connected to the corresponding mounting frame 220.

[0058] In this embodiment, the installation frame 220 is slidably installed on the corresponding fixed block 202 by setting the limiting groove and limiting block, that is, the installation frame 220 is lifted and lowered in the collection tank 100; wherein, the lower end of the lifting rod 312 is connected to the corresponding installation frame 220, so that the lifting rod 312 can drive the installation frame 220 to rise and fall, thereby enabling the pusher plate 221 on it to push the mixture in the collection tank 100 at different height positions, thereby making the mixture in the collection tank 100 generate a better turbulent flow effect, that is, improving the mixing effect;

[0059] It should be noted that the extended end of the lever 622 has a certain length, and it can maintain a state of cooperation with the rotating ring plate 520 during the lifting and lowering of the mounting frame 220. That is, during the lifting and lowering of the mounting frame 220, the rotation of the stirring shaft 210 can drive the pusher plate 221 to push the mixture in the collection tank 100.

[0060] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. An EDI concentrate water recycling device, characterized by: The application relates to a collection and treatment unit, which comprises a raw water tank, a filtering unit, a reverse osmosis unit and an EDI unit connected in sequence, the raw water tank is provided with a tap water interface connected with external tap water, the EDI unit is provided with a pure water outlet and a concentrated water outlet, the concentrated water outlet is connected with the collection and treatment unit through a connecting pipeline, the collection and treatment unit is used for treating EDI concentrated water, the collection and treatment unit inputs the treated concentrated water into the raw water tank again through a backflow pipeline; the collection and treatment unit comprises a collection tank (100), the top wall of the collection tank (100) is provided with a water inlet assembly and a dosing assembly arranged around the water inlet assembly, the water inlet assembly comprises a water inlet hopper (110), the dosing assembly comprises a dosing ring box (120) internally provided with a storage cavity (201), and the lower side of the dosing ring box (120) is uniformly provided with a quantitative dosing element; the quantitative dosing element comprises a dosing barrel (230) with an open upper end, the dosing barrel (230) is internally provided with an upper cavity (411) and a lower cavity (412) from top to bottom, the side wall of the lower cavity (412) is provided with a fixing ring (413), the side wall of the lower cavity (412) and located below the fixing ring (413) is provided with a medicine outlet slot (301), the lower cavity (412) below the fixing ring (413) is internally provided with a first piston (430) for plugging the medicine outlet slot (301) through a first spring (420), the lower cavity (412) above the fixing ring (413) is internally provided with a second piston (450) for plugging the lower cavity (412) through a second spring (440), the lower side of the second piston (450) is provided with a top rod (451) abutting on the first piston (430), the upper cavity (411) is internally provided with a third piston (310) capable of lifting, the third piston (310) is distributed with a medicine inlet hole (311), the second piston (450) is provided with a through hole (452) dislocated with the medicine inlet hole (311), the third piston (310) is provided with a lifting rod (312) penetrating through the second piston (450) and the first piston (430) and extending out of the dosing barrel (230), and a first driving element is used for driving the lifting rod (312) to lift and realize dosing of the quantitative dosing element into the collection tank (100).

2. The EDI concentrate water recycling device according to claim 1, characterized in that: The collection tank (100) is internally provided with a stirring assembly, the stirring assembly comprises a stirring shaft (210) rotatably arranged, the stirring shaft (210) is uniformly provided with stirring plates (211), the stirring shaft (210) is provided with a first driving element, and the stirring shaft (210) rotates to drive the first driving element to drive the quantitative dosing element to dose into the collection tank (100) at intervals; the collection tank (100) is further provided with a plug flow assembly below the quantitative dosing element, the plug flow assembly comprises a mounting frame (220) arranged along the radial direction of the collection tank (100), the mounting frame (220) is internally provided with a plug flow plate (221) capable of sliding, and the stirring shaft (210) is provided with a second driving element, the second driving element is used for driving the plug flow plate (221) to reciprocatingly move in the mounting frame (220).

3. The EDI concentrate water recycling device according to claim 2, characterized in that: The upper end of the stirring shaft (210) extends into the water inlet hopper (110), and an impeller (212) is arranged at the end of the stirring shaft (210) extending into the water inlet hopper (110).

4. The EDI concentrate water recycling device according to claim 3, characterized in that: The bottom wall of the collecting tank (100) is provided with a motor (102) for driving the stirring shaft (210) to rotate.

5. The EDI concentrate water recycling device of claim 4, wherein: The first driving assembly comprises a driving ring (240) arranged circumferentially along the collecting tank (100), the driving ring (240) is fixedly installed on the stirring shaft (210) through a mounting column (511), the driving ring (240) is provided with a driving sliding groove, the extending end of the lifting rod (312) is provided with a driving column (313) extending into the driving sliding groove and sliding in the driving sliding groove, the stirring shaft (210) drives the driving ring (240) to rotate for driving the driving column (313) to slide along the driving sliding groove, so as to realize the lifting of the lifting rod (312).

6. The EDI concentrate water recycling device according to claim 5, characterized in that: The upper and lower side walls of the mounting frame (220) are provided with sliding grooves (611) along the radial direction of the collecting tank (100), both ends of the push flow plate (221) are provided with sliding blocks (621) extending into the corresponding sliding grooves (611) and sliding in the corresponding sliding grooves (611), the mounting frame (220) is provided with a tension spring (630) for pulling the push flow plate (221) to move into the collecting tank (100), the lower side wall of the mounting frame (220) is provided with a strip-shaped groove (711), and the sliding block (621) located on the lower side is provided with a push rod (622) extending out of the strip-shaped groove (711); the second driving member is used for reciprocatingly sliding the push rod (622) along the strip-shaped groove (711).

7. The EDI concentrate water recycling device according to claim 6, characterized in that: The second driving assembly comprises a rotating ring plate (520) fixedly connected to the outside of the stirring shaft (210) through a connecting rod (530), the rotating ring plate (520) is uniformly distributed with grooves (521) for sliding in of the corresponding push rod (622), the two side walls of the groove (521) are provided with guide inclined surfaces (522), the stirring shaft (210) drives the rotating ring plate (520) to rotate for driving the push rod (622) to slide into or slide out of the groove (521) along the guide inclined surface (522), so as to realize the reciprocating sliding of the push rod (622) along the strip-shaped groove (711).

8. The EDI concentrate water recycling device according to claim 7, characterized in that: The inner wall of the collecting tank (100) is provided with a fixing block (202) along the height direction thereof, the outer side wall of the fixing block (202) is provided with a limiting groove along the height direction thereof, one side wall of the mounting frame (220) is provided with a clamping groove (612) for clamping the corresponding fixing block (202), the side wall of the clamping groove (612) is provided with a limiting block extending into the corresponding limiting groove and sliding in the corresponding limiting groove, and the lower end of the lifting rod (312) is connected to the corresponding mounting frame (220).

9. The EDI concentrate water recycling device of claim 8, wherein: The bottom wall of the collecting tank (100) and located at the periphery is provided with a supporting leg (101) for supporting the collecting tank (100).

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