Reverse osmosis concentrated water recovery device

Abstract

The utility model relates to the technical field of reverse osmosis, and discloses a reverse osmosis concentrated water recovery device which comprises a separation tank, a recovery tank is connected to one side of the lower surface of the separation tank, a plurality of pressurizing square boxes are arranged on the other side of the separation tank at equal intervals, a detachable reverse osmosis membrane frame is connected to the lower end of the front side of each pressurizing square box, and a reverse osmosis membrane is arranged in each reverse osmosis membrane frame. A piston device is slidably arranged at the upper end in the pressurizing square box, a driving structure for controlling the piston device to ascend and descend is connected to the separation tank, and a spiral mixing structure extending into the pressurizing square box for stirring is connected to the lower end of the rear side of the separation tank. The utility model has the advantages that the reverse osmosis membrane works in separated areas, so that larger pressure difference is avoided, and the concentrated water can be uniformly mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of reverse osmosis, and specifically refers to a reverse osmosis concentrated water recovery device. Background Art

[0002] Reverse osmosis technology is an efficient water treatment technology, usually used to remove dissolved solids, ions, bacteria, organic substances, etc. in water. Based on the characteristics of the semi-permeable membrane, this technology uses high pressure to push water reversely through the semi-permeable membrane, so that the solutes in the water are intercepted on one side of the membrane, while pure water passes through the micropores of the semi-permeable membrane, thus realizing the separation and purification of water.

[0003] At present, reverse osmosis technology has become a common choice in treating concentrated water. However, there are some problems with the current method of pressurized recovery of concentrated water in the form of a concentrated water tank on one side, a clear water tank on the other side, and a filter membrane in the middle. Among them, a major problem is that the area of the reverse osmosis membrane is too large, resulting in a large pressure in the middle area, and reducing the reverse osmosis ability of the surrounding area, affecting the efficiency of the entire system. In addition, the current structure lacks a certain degree of uniformity, making the density of the concentrated water near the reverse osmosis membrane relatively large, while the concentrated water with a smaller density in the distance is not easy to pass through, resulting in uneven distribution of the concentrated water. Summary of the Utility Model

[0004] In order to solve the above various problems, the utility model proposes a reverse osmosis concentrated water recovery device that works in a separated area of the reverse osmosis membrane, avoids a large pressure difference, and has the function of uniform mixing of concentrated water.

[0005] In order to solve the above technical problems, the technical solution proposed by the utility model is: a reverse osmosis concentrated water recovery device, including a separation tank, a recovery tank is connected and arranged on one side below the separation tank, a number of pressurized square boxes are arranged at equal intervals on the other side of the separation tank, a detachable reverse osmosis membrane frame is connected and arranged at the lower front side of the pressurized square box, a reverse osmosis membrane is arranged in the reverse osmosis membrane frame, a piston device is slidably arranged at the upper end inside the pressurized square box, a driving structure for controlling the lifting of the piston device is connected and arranged on the upper surface of the separation tank, and a spiral mixing structure for extending into the pressurized square box for stirring is connected and arranged at the lower rear side of the separation tank.

[0006] Furthermore, the spiral mixing structure includes a rotating shaft rotatably arranged at the lower rear side of the pressurized square box through a waterproof bearing, a stirring auger is connected and arranged inside the rotating shaft, a bevel gear one is connected and arranged outside the rotating shaft, a motor is connected and arranged at the lower rear side of the separation tank, a long rotating rod is driven by the output end of the motor, and a bevel gear two adapted to the bevel gear one is arranged at equal intervals on the long rotating rod.

[0007] Based on the above technical features, the stirring auger driven by the motor is close to the reverse osmosis membrane, which can evenly mix the concentrated water in the pressurized square box up and down, making the concentration difference near and far from the reverse osmosis membrane small, and more conducive to accelerating the reverse osmosis efficiency.

[0008] Further, the driving structure includes upper extension plates connected to both sides above the separation tank, a cross plate connected to the upper surfaces of the upper extension plates, a cylinder fixedly arranged in the middle above the cross plate, a push plate connected to the cylinder extending through the cross plate, and a power plate connected to the push plate on the piston device.

[0009] Based on the above technical features, when the cylinder extends or retracts, it can control the piston device to lift and lower uniformly. Coupled with the uniformly rotating stirring auger, the synchronous operation of the entire separation device can be achieved.

[0010] Further, the recovery tank is a sunken tank, and a water pump for pumping the water in the recovery tank is connected below the separation tank.

[0011] Based on the above technical features, when there is too much purified water separated in the recovery tank, it is pumped out by the water pump, which does not interfere with the subsequent separation process.

[0012] Further, a liquid inlet pipe is connected to the rear side of the separation tank. The liquid inlet pipe is communicated with the pressurized square box, and the liquid inlet pipe is simultaneously connected to the main liquid pipe, and the main liquid pipe is communicated with an external concentrated water pressurization supply device.

[0013] Based on the above technical features, the external concentrated water pressurization supply device sends the concentrated water through the main liquid pipe and then through the liquid inlet pipe into the pressurized square box for unified allocation.

[0014] Further, a waste liquid pipe passing through the separation tank is connected below the pressurized square box, and an electric control valve is connected to the waste liquid pipe.

[0015] Based on the above technical features, when the concentrated water is pressurized to a certain extent, the concentration of the concentrated water will become very high. At this time, it is no longer possible to separate the purified water by pressurization, and it can only be discharged from the waste liquid pipe and other separation methods are used to continue the separation.

[0016] Further, a diversion groove is connected between the reverse osmosis membrane frame and the recovery tank.

[0017] Based on the above technical features, the separated purified water is collected in the recovery tank through the diversion groove for unified collection.

[0018] The advantages of the present utility model compared with the prior art are as follows:

[0019] Advantages of working in the reverse osmosis membrane separation area: The reverse osmosis membrane is provided inside the reverse osmosis membrane frame, which is the core component of the device and is used to separate pure water and concentrated water. Moreover, in this design, multiple reverse osmosis membranes work independently, reducing the pressure brought by the concentrated water, controlling the pressure difference, preventing the impact of excessive pressure on the device, making the device more stable and reliable. The presence of the reverse osmosis membrane avoids directly mixing pure water and wastewater, ensuring the quality of the recycled water.

[0020] Function of uniform mixing of concentrated water: The stirring auger in the pressurized square box realizes the uniform mixing of concentrated water through the rotation of the rotating shaft, ensuring the uniform distribution of solutes in the concentrated water, preventing local aggregation or precipitation of solutes in the concentrated water, thereby improving the working efficiency and stability of the device. Brief Description of the Drawings

[0021] Figure 1 is the perspective view of the present utility model;

[0022] Figure 2 is the top view of the present utility model;

[0023] Figure 3 is the front view of the present utility model;

[0024] Figure 4 is the rear view of the present utility model;

[0025] Figure 5 is the cross-sectional view of the present utility model.

[0026] As shown in the figure: 1. Separation tank; 2. Recovery tank; 3. Pressurized square box; 4. Reverse osmosis membrane frame; 5. Piston device; 6. Rotating shaft; 7. Stirring auger; 8. First bevel gear; 9. Motor; 10. Long rotating rod; 11. Second bevel gear; 12. Upper extension plate; 13. Cross plate; 14. Cylinder; 15. Pushing plate; 16. Power plate; 17. Water pump; 18. Liquid inlet pipe; 19. Total liquid pipe; 20. Waste liquid pipe; 21. Electric control valve; 22. Flow guiding groove. Detailed Description of the Preferred Embodiment

[0027] This reverse osmosis concentrated water recovery device works by separating areas, avoiding pressure differences, achieving uniform mixing of concentrated water, improving system efficiency and stability, extending the membrane life, reducing energy consumption, and improving the water purification effect. The following further details the present utility model with reference to the accompanying drawings.

[0028] One side at the bottom of the separation tank 1 is connected with a recovery tank 2. The recovery tank 2 is a sunken tank. A water pump 17 for pumping water in the recovery tank 2 is connected to the bottom of the separation tank 1. A liquid inlet pipe 18 is connected to the rear side of the separation tank 1. The liquid inlet pipe 18 communicates with the pressurized square box 3 and is also connected to the main liquid pipe 19 at the same time. The main liquid pipe 19 communicates with an external concentrated water pressurization supply device. The external concentrated water pressurization supply device sends concentrated water into the pressurized square box 3 through the main liquid pipe 19 and then through the liquid inlet pipe 18 for unified deployment. It has high comprehensive performance and is suitable for large-area use. A diversion groove 22 is connected between the reverse osmosis membrane frame 4 and the recovery tank 2. A waste liquid pipe 20 passing through the separation tank 1 is connected to the bottom of the pressurized square box 3. An electric control valve 21 is connected to the waste liquid pipe 20. When the concentrated water is pressurized to a certain extent, the concentration of the concentrated water will become very high. At this time, it is no longer possible to separate pure water by pressurization, and it can only be discharged from the waste liquid pipe 20 and continue to be separated by a distillation tower or other means.

[0029] A number of pressurized square boxes 3 are equidistantly arranged on the other side of the separation tank 1. A detachable reverse osmosis membrane frame 4 is connected to the lower end of the front side of the pressurized square box 3. A reverse osmosis membrane is arranged inside the reverse osmosis membrane frame 4. A piston device 5 is slidably arranged at the upper end inside the pressurized square box 3. A driving structure for controlling the lifting of the piston device 5 is connected to the upper surface of the separation tank 1. The driving structure includes upper extension plates 12 connected to both sides of the upper surface of the separation tank 1. A cross plate 13 is connected to the upper surfaces of the upper extension plates 12. The cylinder extends or retracts, which can control the unified lifting of the piston device 5. Coupled with the uniformly rotating stirring auger 7, the synchronous operation of the entire separation device can be realized. A cylinder 14 is fixedly arranged in the middle of the upper surface of the cross plate 13. The extension of the cylinder 14 passes through the cross plate 13 and is connected with a pushing plate 15. A power plate 16 connected to the pushing plate 15 is connected to the upper surface of the piston device 5.

[0030] A spiral mixing structure for stirring and extending into the pressurized square box 3 is connected to the lower end of the rear side of the separation tank 1. The spiral mixing structure includes a rotating shaft 6 rotatably arranged at the lower end of the rear side of the pressurized square box 3 through a waterproof bearing. A stirring auger 7 is connected to the inner side of the rotating shaft 6. A bevel gear one 8 is connected to the outer side of the rotating shaft 6. A motor 9 is connected to the lower end of the rear side of the separation tank 1. A long rotating rod 10 is driven by the output end of the motor 9. Bevel gears two 11 adapted to the bevel gear one 8 are equidistantly arranged on the long rotating rod 10. Through the meshing action between the bevel gears, a one-driving-multiple working mode can be realized to achieve synchronous rotation.

[0031] Working principle: The concentrated water is supplied to the main liquid pipe 19 by an external concentrated water pressurizing supply device. The concentrated water is dispersed and each enters the corresponding pressurizing box 3 from the liquid inlet. When it reaches a certain amount, it stops. Then the air cylinder 14 extends, causing the pushing plate 15 to drive the power plate 16 to press the piston device 5 downward. The downward movement of the piston device 5 increases the pressure in the pressurizing box 3, enabling the pure water in the concentrated water to permeate out through the reverse osmosis membrane in the reverse osmosis membrane frame 4. At the same time, the motor 9 is started to drive the long rotating rod 10, making the second bevel gear 11 rotate at a high speed. The second bevel gear 11 meshes with the first bevel gear 8, causing the rotating shaft 6 to drive the stirring auger 7 to rotate, keeping the concentrated water in a stirred state to ensure its uniform concentration. It is collected in the recovery pool 2 from the diversion trough 22. If the water volume in the recovery pool 2 is too much, the water pump 17 is started to pump it out. When the water output efficiency of the reverse osmosis membrane is too low, the electric control valve 21 is started to make the concentrated water with a very high concentration flow out from the waste liquid pipe 20.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to specific situations.

[0033] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the creative concept of the present utility model, they design similar structural manners and embodiments to this technical solution without creative efforts, which shall fall within the protection scope of the present utility model.

Claims

1. A reverse osmosis concentrated water recovery device, comprising a separation tank (1), characterized in that: A recovery tank (2) is connected to one side below the separation tank (1), and a plurality of pressurized square boxes (3) are equidistantly arranged on the other side of the separation tank (1). A detachable reverse osmosis membrane frame (4) is connected to the lower end of the front side of the pressurized square box (3), and a reverse osmosis membrane is arranged in the reverse osmosis membrane frame (4). A piston (5) is slidably arranged at the upper end of the pressurized square box (3). A driving structure for controlling the lifting and lowering of the piston (5) is connected to the top of the separation tank (1), and a spiral mixing structure extending into the pressurized square box (3) for stirring is connected to the lower end of the rear side of the separation tank (1).

2. A reverse osmosis concentrated water recovery device according to claim 1, characterized in that: The spiral mixing structure comprises a rotating shaft (6) which is arranged at the lower end of the rear side of the pressurized square box (3) and is rotated by a waterproof bearing. A stirring auger (7) is connected to the inner side of the rotating shaft (6). A bevel gear 1 (8) is connected to the outer side of the rotating shaft (6). A motor (9) is connected to the lower end of the rear side of the separation tank (1). A long rotating rod (10) is driven at the output end of the motor (9). A bevel gear 2 (11) which is equidistantly arranged on the long rotating rod (10) and is compatible with the bevel gear 1 (8).

3. A reverse osmosis concentrated water recovery device according to claim 1, characterized in that: The driving structure comprises an upward extension plate (12) connected to both sides of the separation tank (1), a horizontal plate (13) connected to the upward extension plate (12), a cylinder (14) fixedly provided in the middle of the horizontal plate (13), the cylinder (14) extending through the horizontal plate (13) is connected to a push plate (15), and a power plate (16) connected to the push plate (15) is connected to the piston (5).

4. A reverse osmosis concentrated water recovery device according to claim 1, characterized in that: The recovery pool (2) is a sinking pool, and a water pump (17) for extracting water from the recovery pool (2) is connected below the separation pool (1).

5. The reverse osmosis concentrated water recovery device according to claim 1, characterized in that: The rear side of the separation tank (1) is connected with a liquid inlet pipe (18), the liquid inlet pipe (18) is connected to the pressurized square box (3), the liquid inlet pipe (18) is also connected to a main liquid pipe (19), and the main liquid pipe (19) is connected to an external concentrated water pressurized supply device.

6. A reverse osmosis concentrated water recovery device according to claim 1, characterized in that: A waste liquid pipe (20) passing through the separation tank (1) is connected to the bottom of the pressurized square box (3), and an electric control valve (21) is connected to the waste liquid pipe (20).

7. A reverse osmosis concentrated water recovery device according to claim 1, characterized in that: A guide groove (22) is provided between the reverse osmosis membrane frame (4) and the recovery tank (2).

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