A high pressure reverse osmosis device

Abstract

The present invention discloses a high-pressure reverse osmosis device, which relates to the field of reverse osmosis technology; in order to solve the problem of sufficient use; specifically includes a support frame, the top of which is respectively fixed with a reverse osmosis housing and an alkali liquid tank, the reverse osmosis housing is separated into a confluence chamber 1 and a confluence chamber 2 by a partition fixed on its inner wall, and multiple groups of reverse osmosis units are fixedly installed on the inner side of the partition, and a top cover is fixed to the top outer wall of the reverse osmosis housing by bolts. The present invention protects the RO reverse osmosis membrane by setting a steel grid and a cotton-spinning filter element, while the cotton-spinning filter element can also play a filtering role to prevent small particles of impurities in seawater from damaging the RO reverse osmosis membrane. At the same time, in a start-stop cycle, the steel grid and the cotton-spinning filter element can also rotate relative to each other by a certain angle, so that the contact position of the steel grid and the cotton-spinning filter element changes, ensuring the sufficient use of the cotton-spinning filter element and the RO reverse osmosis membrane and preventing waste of resources.

Description

Technical Field

[0001] The invention relates to the technical field of reverse osmosis, and in particular to a high-pressure reverse osmosis device. Background Art

[0002] Seawater desalination is an important way to obtain fresh water. The traditional method of obtaining fresh water by distillation consumes a lot of energy, so most existing technologies use reverse osmosis membranes to desalinate seawater.

[0003] The form of reverse osmosis is to use the size of the molecular gap of the reverse osmosis membrane, apply high pressure on one side of the reverse osmosis membrane, and use the high pressure to pass water molecules through the molecular gap of the reverse osmosis membrane, while the salt compound molecules in the seawater cannot pass through, thereby achieving desalination of seawater.

[0004] After searching, the Chinese patent publication number CN218077265U discloses a high-pressure resistant reverse osmosis membrane, including a reverse osmosis membrane and a clean water diversion net, a clean water diversion net is arranged between the reverse osmosis membranes, a wastewater diversion net is arranged on the side of the reverse osmosis membrane away from the clean water diversion net, the outermost layer of the reverse osmosis membrane is provided with a high-pressure resistant membrane layer, the lower layer of the high-pressure resistant membrane layer is provided with a dense layer, the lower layer of the dense layer is provided with a transition layer, and the lower layer of the transition layer is provided with a porous support layer.

[0005] The above patent has the following deficiencies: it adopts a multi-layer membrane structure in combination with a guide net to support the reverse osmosis membrane that is easily damaged by high-pressure deformation, but its multi-layer structure is relatively fixed. When the support layer supports the reverse osmosis membrane, it will also cause the reverse osmosis membrane at the support to be unable to participate in the reverse osmosis filtration due to the mutual fit. When used for a long time, the reverse osmosis membrane located in the support gap will reach its usage limit, while the reverse osmosis membrane at the support is still in the initial state, which will lead to a waste of resources. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-pressure reverse osmosis device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A high-pressure reverse osmosis device comprises a support frame,

[0009] The top of the support frame is respectively fixed with a reverse osmosis shell and an alkali liquid tank, the reverse osmosis shell is divided into a confluence chamber 1 and a confluence chamber 2 by a partition fixed on the inner wall of the reverse osmosis shell, and a plurality of reverse osmosis units are fixedly installed on the inner side of the partition, a top cover is fixed to the top outer wall of the reverse osmosis shell by bolts, a mixed liquid inlet pipe is fixed on the top of the top cover, and a mixed fluid driving part is connected to the other side of the mixed liquid inlet pipe, and a pure water outlet is fixed to the bottom of the support frame;

[0010] The reverse osmosis unit comprises a steel grid located at the outermost side, a cotton filter element arranged inside the steel grid, and an RO reverse osmosis membrane embedded in the interlayer of the cotton filter element. A ring frame is fixed on the top of the steel grid, the ring frame is movably plugged into the top inner wall of the steel grid, and the ring frame and the connecting assembly are matched through the steel grid;

[0011] The connection assembly includes a corrugated groove opened on the inner wall of the steel grid and a limiting protrusion fixed on the outer wall of the ring frame, and the limiting protrusion is movably limited and matched with the inner wall of the corrugated groove.

[0012] Preferably: an external expansion sealing ring is fixed to the top of the ring frame, the outer wall of the external expansion sealing ring is movably sealed and matched with the inner wall of the top of the steel grid, the outer wall of the steel grid is welded with a flange fixed to the partition, and the top of the top cover is fixed with multiple maintenance doors corresponding to the position and number of reverse osmosis units by bolts, the bottom of the cotton filter element is connected to spring one through a hard plate, and the other end of spring one is connected to the bottom upper surface of the steel grid.

[0013] Furthermore: the inner wall of the alkali liquid tank contains sodium hydroxide solution, the mixed fluid driving part includes an opening valve, a tapered tube, a fluid pump and a suction tube, one end of the tapered tube is fixed to the end of the mixed liquid inlet pipe, the water outlet of the fluid pump is fixed to the other end of the tapered tube, the opening valve is fixed to the bottom downstream of the throat diameter of the tapered tube, the suction tube is fixed to the bottom of the opening valve, and the other end of the suction tube is inserted into the bottom of the alkali liquid tank.

[0014] On the basis of the above scheme: the opening valve includes a valve housing and a valve core rotatably connected to the inner wall of the valve housing through a valve stem, an outer shell is fixed to an outer wall of one side of the valve housing, a sliding block is slidably connected to the inner wall of the outer shell, a spiral groove is provided on the outer wall of the valve stem, and two insulating protrusions are fixed on the inner wall of the sliding block that cooperate with the spiral groove for movable limiting, and two springs are buckled at the bottom of the sliding block.

[0015] A more preferred solution in the above solution is that: an electromagnet that cooperates with each other is fixed to the top outer wall of the sliding block and the top inner wall of the outer shell respectively.

[0016] As a further solution of the present invention: a reference electrode and a glass electrode are fixedly embedded in the inner walls on both sides of the symmetrical pure water outlet, and the reference electrode and the glass electrode are electrically connected to the electromagnet through a current amplifier.

[0017] At the same time, a power control unit for controlling a fluid pump is fixed on one side outer wall of the alkali liquid tank.

[0018] As a preferred embodiment of the present invention, the power control unit includes a protective shell fixed to the side wall of the alkali liquid box, a magnetic core fixed to the inner wall of the protective shell through insulating legs, and a primary coil and a secondary coil respectively wound around the outer walls on both sides of the magnetic core.

[0019] At the same time, the outer wall of the secondary coil is in contact with and electrically conductive with the electrode head, a fixed block is fixed on the other side of the electrode head, a telescopic rod is fixed to the bottom of the fixed block, a piston is fixed to the bottom outer wall of the telescopic rod by bolts, the top of the pure water outlet is welded and connected to a fork tube, the piston is slidably connected to the inner wall of the fork tube, and a spring three is buckled on the top outer wall of the piston, and the other end of the spring three is buckled on the top lower surface of the fork tube.

[0020] As a more preferred solution of the present invention: the primary coil is connected to an AC power source, and the top end of the secondary coil and the electrode head are electrically connected to the connection terminal of the fluid pump.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention, while providing a steel grid and a cotton filter element to protect the RO reverse osmosis membrane, can also play a filtering role in preventing small particles of impurities in seawater from damaging the RO reverse osmosis membrane. At the same time, in a start-stop cycle, the steel grid and the cotton filter element can also rotate relative to each other at a certain angle, thereby changing the contact position between the steel grid and the cotton filter element, ensuring the adequacy of the use of the cotton filter element and the RO reverse osmosis membrane and preventing waste of resources. In addition, the rotation drive of the cotton filter element cleverly utilizes the water pressure of the reverse osmosis and the coordination of the corrugated groove and the limiting protrusion. It is automatically controlled with the start and stop of the entire device, and no power arrangement is required.

[0023] 2. The present invention, by providing a tapered tube, utilizes the Venturi principle to achieve the delivery of the sodium hydroxide solution, which can, on the one hand, integrate the power of seawater transportation and sodium hydroxide solution transportation, reduce the power arrangement and power control logic arrangement, and on the other hand, can also achieve reliable mixing of the sodium hydroxide solution and seawater.

[0024] 3. The present invention, on the basis of adjusting the opening of the opening valve to achieve pH adjustment and increase the quality and output of pure water, sets the opening valve to be driven by an electromagnet, and then cooperates with the setting of a reference electrode and a glass electrode, thereby achieving negative feedback adjustment of the addition ratio of the sodium hydroxide solution, and there is no need to set up traditional electronic control components such as sensors, host computers, actuators, etc., to achieve a self-sensing, self-driving automated negative feedback control process.

[0025] 4. The present invention, by setting up a power control unit, can control the power of the fluid pump, thereby realizing the control of the drainage internal pressure of the pure water outlet, thereby ensuring that the pure water can reliably enter the water tank, and at the same time preventing the waste of kinetic energy, thereby achieving energy-saving effect. The power control unit adopts control based on the principle of "transformer", and the voltage transformation of the transformer is controlled by the water pressure of pure water, thereby realizing the control function of mechanical automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a high-pressure reverse osmosis device proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a reverse osmosis unit of a high-pressure reverse osmosis device proposed by the present invention;

[0028] Figure 3 A schematic diagram of the partial structure of a reverse osmosis unit of a high-pressure reverse osmosis device proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the planar development structure of a corrugated groove of a high-pressure reverse osmosis device proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a mixed fluid driving part of a high-pressure reverse osmosis device proposed by the present invention;

[0031] Figure 6 A schematic diagram of the internal structure of an opening valve of a high-pressure reverse osmosis device proposed by the present invention;

[0032] Figure 7 A schematic diagram of the electromagnet circuit structure of a high-pressure reverse osmosis device proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a power control unit of a high-pressure reverse osmosis device proposed by the present invention;

[0034] Fig. 9 This is a schematic diagram of the piston and fork tube position structure of a high-pressure reverse osmosis device proposed by the present invention.

[0035] In the figure: 1, support frame; 2, confluence chamber 1; 3, reverse osmosis housing; 4, reverse osmosis unit; 5, partition; 6, confluence chamber 2; 7, top cover; 8, maintenance door; 9, mixed liquid inlet pipe; 10, mixed fluid drive unit; 11, alkali liquid tank; 12, power control unit; 13, pure water outlet; 14, external expansion seal ring; 15, ring frame; 16, connecting assembly; 17, flange; 18, steel grid; 19, cotton spinning filter element; 20, RO reverse osmosis membrane; 21, hard plate; 22, spring 1; 23, corrugated groove; 24, limit protrusion 1; 25. Opening valve; 26. Conical tube; 27. Fluid pump; 28. Pipette; 29. ​​Reference electrode; 30. Glass electrode; 31. Valve core; 32. Spring 2; 33. Spiral groove; 34. Electromagnet; 35. Outer shell; 36. Insulating protrusion 2; 37. Valve stem; 38. Valve shell; 39. Protective shell; 40. Magnetic core; 41. Insulating leg; 42. Primary coil; 43. Fixed block; 44. Telescopic rod; 45. Electrode head; 46. Secondary coil; 47. Spring 3; 48. Piston; 49. Fork tube; 50. Sliding block. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Example

[0038] A high pressure reverse osmosis device, such as Figure 1 - Fig. 9 As shown, it includes a support frame 1, and a reverse osmosis shell 3 and an alkali liquid tank 11 are fixed on the top of the support frame 1 respectively. The reverse osmosis shell 3 is divided into a confluence chamber 1 2 and a confluence chamber 2 6 by a partition 5 fixed on the inner wall of the reverse osmosis shell 3, and a plurality of reverse osmosis units 4 are fixedly installed on the inner side of the partition 5. A top cover 7 is fixed to the top outer wall of the reverse osmosis shell 3 by bolts, a mixed liquid inlet pipe 9 is fixed on the top of the top cover 7, and a mixed fluid driving part 10 is connected to the other side of the mixed liquid inlet pipe 9, and a pure water outlet 13 is fixed to the bottom of the support frame 1.

[0039] Correspondingly, a high-concentration salt water drainage valve is also provided on one side of the reverse osmosis housing 3 located at the second confluence chamber 6 .

[0040] The reverse osmosis unit 4 includes a steel grid 18 located on the outermost side, a cotton filter element 19 arranged on the inner side of the steel grid 18, and an RO reverse osmosis membrane 20 embedded in the interlayer of the cotton filter element 19. A ring frame 15 is fixed on the top of the steel grid 18, and the ring frame 15 is movably inserted into the top inner wall of the steel grid 18, and the ring frame 15 cooperates with the connecting component 16 through the steel grid 18.

[0041] The connecting assembly 16 includes a corrugated groove 23 formed on the inner wall of the steel grid 18 and a limiting protrusion 24 fixed to the outer wall of the ring frame 15 . The limiting protrusion 24 is movably limited and matched with the inner wall of the corrugated groove 23 .

[0042] like Figure 4 As shown, at the wave crest, the top profile of the corrugated groove 23 has a lateral offset along the moving direction relative to the bottom profile, and at the wave trough, the bottom profile of the corrugated groove 23 has a lateral offset along the moving direction relative to the top profile.

[0043] An external expansion sealing ring 14 is fixed to the top of the ring frame 15, and the outer wall of the external expansion sealing ring 14 is movably sealed to the inner wall of the top of the steel grid frame 18. The outer wall of the steel grid frame 18 is welded with a flange 17 fixed to the partition 5. A plurality of maintenance doors 8 corresponding to the position and number of the reverse osmosis units 4 are fixed to the top of the top cover 7 by bolts. The bottom of the cotton filter element 19 is connected to a spring 22 through a hard plate 21, and the other end of the spring 22 is connected to the bottom upper surface of the steel grid frame 18.

[0044] When the device is in use, the mixed fluid driving part 10 can input seawater into the mixed liquid inlet pipe 9, and the seawater enters the confluence chamber 2 6 through the mixed liquid inlet pipe 9, and then enters the reverse osmosis unit 4 from the top opening of the reverse osmosis unit 4 after being diverted by the confluence chamber 2 6. The cotton filter element 19 can filter the seawater again to a certain extent, and the RO reverse osmosis membrane 20 can perform reverse osmosis. Pure water flows into the confluence chamber 2 through the cotton filter element 19 and the steel grid 18, and then flows out into the water storage tank through the pure water outlet 13. At the same time, when the reverse osmosis unit 4 is filtering, due to the top opening of the reverse osmosis unit 4, the combined force of the filtering force on the cotton filter element 19 and the RO reverse osmosis membrane 20 is downward, thereby compressing the spring 1 22. The cotton-spinning filter element 19 slides downward relative to the steel grid frame 18. During the sliding, the steel grid frame 18 can rotate relative to the cotton-spinning filter element 19 through the action of the corrugated groove 23 and the limiting protrusion 24. After the single filtration is completed, the cotton-spinning filter element 19 moves upward due to the elastic force of the spring 22. The upward movement can also cause the steel grid frame 18 to rotate. Because it is located at the crest, the top contour of the corrugated groove 23 has a lateral offset along the direction of movement relative to the bottom contour; and because it is located at the trough, the bottom contour of the corrugated groove 23 has a lateral offset along the direction of movement relative to the top contour. Therefore, when the steel grid frame 18 moves upward or downward relatively, its rotation direction is the same, which ultimately makes the steel grid frame 18 rotate in a directional manner during the start-stop cycle.

[0045] This device, by arranging the steel grid frame 18 and the cotton-spinning filter element 19 to protect the RO reverse osmosis membrane 20, on the one hand, the cotton-spinning filter element 19 can also play a filtering role to prevent small particles of impurities in the seawater from damaging the RO reverse osmosis membrane 20. At the same time, in a start-stop cycle, the steel grid frame 18 and the cotton-spinning filter element 19 can also rotate relative to each other at a certain angle, so that the contact position between the steel grid frame 18 and the cotton-spinning filter element 19 changes, thereby ensuring the full use of the cotton-spinning filter element 19 and the RO reverse osmosis membrane 20 and preventing waste of resources. In addition, for the rotation drive of the cotton-spinning filter element 19, the water pressure of the reverse osmosis and the cooperation of the corrugated groove 23 and the limiting protrusion 24 are cleverly utilized. It is automatically controlled with the start and stop of the entire device and does not require power layout.

[0046] Since the carbon dioxide contained in the raw water will form hydrogen ions and carbonate ions under hydrolysis, and the reverse osmosis membrane has a high removal rate for carbonate ions, the pH value of the produced water will decrease. When the pH value is less than 8, carbonate ions and bicarbonate ions will be converted into carbon dioxide, which may lead to a decrease in the quality of the produced water. By adding sodium hydroxide, carbon dioxide can be converted into bicarbonate that can be removed by the reverse osmosis membrane. In order to solve the mixing problem of sodium hydroxide; Figure 1 , Figure 5As shown, the inner wall of the alkali liquid tank 11 contains sodium hydroxide solution, and the mixed fluid driving unit 10 includes an opening valve 25, a tapered tube 26, a fluid pump 27 and a suction pipe 28. One end of the tapered tube 26 is fixed to the end of the mixed liquid inlet pipe 9, and the water outlet of the fluid pump 27 is fixed to the other end of the tapered tube 26. The opening valve 25 is fixed to the bottom downstream of the throat diameter of the tapered tube 26, and the suction pipe 28 is fixed to the bottom of the opening valve 25, and the other end of the suction pipe 28 is inserted into the bottom of the alkali liquid tank 11.

[0047] When the fluid pump 27 transports seawater, the seawater will pass through the throat of the conical tube 26, the pressure will increase, and then the internal pressure will drop instantly after passing through the throat. According to the Venturi principle, negative pressure is generated in the suction pipe 28, and the sodium hydroxide solution in the alkali liquid tank 11 is sucked in and mixed with the negative pressure and then transported to the mixing liquid inlet pipe 9.

[0048] The device, by providing a conical tube 26, utilizes the Venturi principle to achieve the delivery of the sodium hydroxide solution. On the one hand, it can integrate the power of seawater transportation and sodium hydroxide solution transportation, reduce the power arrangement and power control logic arrangement, and on the other hand, it can also achieve reliable mixing of the sodium hydroxide solution and seawater.

[0049] However, when the amount of sodium hydroxide added is small, the pH at the outlet will still be acidic and will mix with carbon dioxide again to produce acid radicals. When a large amount is added, it will be transitionally alkaline and require further neutralization, which will also lead to waste of raw materials. Therefore, the mixing ratio of the sodium hydroxide solution and seawater can be controlled by the opening of the opening valve 25.

[0050] To solve the progress problem; Figure 5 , Figure 6 As shown, the opening valve 25 includes a valve housing 38 and a valve core 31 rotatably connected to the inner wall of the valve housing 38 through a valve stem 37, an outer shell 35 is fixed to an outer wall of one side of the valve housing 38, a sliding block 50 is slidably connected to the inner wall of the outer shell 35, a spiral groove 33 is provided on the outer wall of the valve stem 37, an insulating protrusion 36 movably limited to the spiral groove 33 is fixed to the inner wall of the sliding block 50, and a spring 32 is buckled at the bottom of the sliding block 50.

[0051] An electromagnet 34 that cooperates with each other is fixed to the top outer wall of the sliding block 50 and the top inner wall of the outer shell 35 respectively.

[0052] A reference electrode 29 and a glass electrode 30 are fixedly embedded in the inner walls of the two symmetrical sides of the pure water outlet 13 , respectively. The reference electrode 29 and the glass electrode 30 are electrically connected to the electromagnet 34 through a current amplifier.

[0053] When the pure water outlet 13 is draining, if the hydrogen ion concentration in the water is relatively high at this time, the potential difference between the reference electrode 29 and the glass electrode 30 will be relatively large, so that the current generated between the reference electrode 29 and the glass electrode 30 will be relatively large. After the current is amplified by the current amplifier, it is applied to the electromagnet 34, and the magnetic force between the two electromagnets 34 will increase, so that the sliding block 50 moves, and then the valve core 31 rotates through the cooperation of the insulating protrusion 2 36 and the spiral groove 33, increasing the overlapping area between the valve core 31 and the flow channel of the valve housing 38, thereby increasing the opening of the opening valve 25 and increasing the ratio of the sodium hydroxide solution to the seawater, and vice versa.

[0054] In this device, on the basis of adjusting the opening of the opening valve 25 to adjust the opening to achieve pH adjustment and increase the quality and output of pure water, the opening valve 25 is set to be driven by the electromagnet 34, and then the reference electrode 29 and the glass electrode 30 are set, so as to achieve negative feedback adjustment of the addition ratio of the sodium hydroxide solution, and there is no need to set up traditional electronic control components such as sensors, host computers, actuators, etc., and a self-sensing, self-driving automated negative feedback control process is achieved.

[0055] When the present embodiment is in use, when the fluid pump 27 transports seawater, the seawater will pass through the throat of the tapered tube 26, the pressure will increase, and then the internal pressure will drop instantly after passing through the throat, so that according to the Venturi principle, a negative pressure is generated in the suction pipe 28, and the sodium hydroxide solution in the alkali liquid tank 11 is sucked in and mixed with the negative pressure and then transported to the mixing liquid inlet pipe 9. However, when the amount of sodium hydroxide added is small, the pH at the outlet will still be acidic, and it will be mixed with carbon dioxide again to produce acid radicals. When more sodium hydroxide is added, it will be transitionally alkaline, and further neutralization is required, which will also lead to a waste of raw materials. Therefore, the mixing ratio of the sodium hydroxide solution and seawater can be controlled by the opening of the opening valve 25. Water enters the confluence chamber 2 6 through the mixed liquid inlet pipe 9, and then enters the reverse osmosis unit 4 from the top opening of the reverse osmosis unit 4 after being diverted by the confluence chamber 2 6. The cotton filter element 19 can filter the seawater again to a certain extent, and the RO reverse osmosis membrane 20 can perform reverse osmosis. Pure water flows into the confluence chamber 2 through the cotton filter element 19 and the steel grid 18, and then flows out through the pure water outlet 13 into the water storage tank. At the same time, when the reverse osmosis unit 4 is filtering, due to the top opening of the reverse osmosis unit 4, the combined force of the filtering force on the cotton filter element 19 and the RO reverse osmosis membrane 20 is downward, so that the spring 1 22 is compressed, and the cotton filter element 19 moves relative to the steel grid 18. When sliding downward, the steel grid 18 can rotate relative to the cotton filter element 19 through the action of the corrugated groove 23 and the limiting protrusion 24. After a single filtration is completed, the cotton filter element 19 moves upward due to the elastic force of the spring 22. The upward movement will also cause the steel grid 18 to rotate. Because it is located at the crest, the top contour of the corrugated groove 23 has a lateral misalignment along the direction of movement relative to the bottom contour, and the bottom contour of the corrugated groove 23 has a lateral misalignment along the direction of movement relative to the top contour at the trough. Therefore, when the steel grid 18 moves upward or downward relatively, its rotation direction is the same, and finally the steel grid 18 rotates and moves in a directional manner during the start-stop cycle. When the pure water outlet 13 is draining, if the hydrogen ion concentration in the water is relatively high at this time, the potential difference between the reference electrode 29 and the glass electrode 30 will be relatively large, so that the current generated between the reference electrode 29 and the glass electrode 30 will be relatively large. After the current is amplified by the current amplifier, it is applied to the electromagnet 34, and the magnetic force between the two electromagnets 34 will increase, so that the sliding block 50 moves, and then the valve core 31 rotates through the cooperation of the insulating protrusion 36 and the spiral groove 33, increasing the overlapping area between the valve core 31 and the flow channel of the valve housing 38, thereby increasing the opening of the opening valve 25, and increasing the ratio of the sodium hydroxide solution to the seawater, and vice versa. Example

[0056] A high pressure reverse osmosis device, such as Figure 1 - Fig. 9As shown, since the pure water outlet 13 will enter the water tank for storage after drainage, if the water pressure internal energy of the drainage is large, after entering the water tank, the internal pressure will be consumed by friction with the water tank, water flow, etc., and finally the pure water is stationary in the water tank, with only static pressure, and the part of the internal pressure consumption comes from the driving energy of the fluid pump 27. Therefore, in order to ensure the energy saving of the fluid pump 27 and at the same time ensure that the pure water can reliably flow into the water tank, the discharge of the pure water outlet 13 needs to have a certain pressure, and it cannot be too large, so in order to solve the energy saving problem; this embodiment makes the following improvements on the basis of embodiment 1: a power control unit 12 for controlling the fluid pump 27 is fixed to the outer wall of one side of the alkali liquid tank 11, and the power control unit 12 includes a protective shell 39 fixed to the side wall of the alkali liquid tank 11, a magnetic core 40 fixed to the inner wall of the protective shell 39 by insulating legs 41, and a primary coil 42 and a secondary coil 46 respectively wound around the outer walls on both sides of the magnetic core 40.

[0057] The outer wall of the secondary coil 46 is in contact with and electrically conductive with the electrode head 45, a fixed block 43 is fixed to the other side of the electrode head 45, a telescopic rod 44 is fixed to the bottom of the fixed block 43, a piston 48 is fixed to the bottom outer wall of the telescopic rod 44 by bolts, the top of the pure water outlet 13 is welded and connected to a fork tube 49, the piston 48 is slidably connected to the inner wall of the fork tube 49, and a spring three 47 is buckled on the top outer wall of the piston 48, and the other end of the spring three 47 is buckled on the top lower surface of the fork tube 49.

[0058] The primary coil 42 is connected to an AC power source, and the top end of the secondary coil 46 and the electrode head 45 are electrically connected to the connection terminal of the fluid pump 27 .

[0059] When the present embodiment is in use, when the pure water outlet 13 is draining water, the water has an internal pressure, so that the piston 48 moves due to the internal pressure, thereby driving the electrode head 45 to move through the telescopic rod 44 and the fixed block 43, so that the contact position between the electrode head 45 and the secondary coil 46 changes, and when the internal pressure of the pure water outlet 13 is greater, the upward movement amplitude of the electrode head 45 is greater, the number of turns of the secondary coil 46 connected to the circuit is reduced, and the power of the fluid pump 27 is reduced, and vice versa.

[0060] This device, by setting up a power control unit 12, can control the power of the fluid pump 27, thereby realizing the control of the drainage internal pressure of the pure water outlet 13, thereby ensuring that the pure water can reliably enter the water tank, and at the same time preventing the waste of kinetic energy, thereby achieving energy-saving effect. The power control unit 12 adopts the control based on the "transformer" principle, and the transformer's voltage transformation is controlled by the water pressure of the pure water, thereby realizing the mechanical automation control function.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high pressure reverse osmosis device, comprising a support frame (1), characterized in that: A reverse osmosis shell (3) and an alkali liquid tank (11) are fixed to the top of the support frame (1), respectively; the reverse osmosis shell (3) is divided into a first confluence chamber (2) and a second confluence chamber (6) by a partition (5) fixed to the inner wall of the reverse osmosis shell (3); and a plurality of reverse osmosis units (4) are fixedly mounted on the inner side of the partition (5); a top cover (7) is fixed to the top outer wall of the reverse osmosis shell (3) by bolts; a mixed liquid inlet pipe (9) is fixed to the top of the top cover (7); and a mixed fluid driving unit (10) is connected to the other side of the mixed liquid inlet pipe (9); and a pure water outlet (13) is fixed to the bottom of the support frame (1); The reverse osmosis unit (4) comprises a steel grid frame (18) located at the outermost side, a cotton filter element (19) arranged inside the steel grid frame (18), and an RO reverse osmosis membrane (20) embedded in the interlayer of the cotton filter element (19); a ring frame (15) is fixed on the top of the steel grid frame (18); the ring frame (15) is movably plugged into the top inner wall of the steel grid frame (18), and the ring frame (15) cooperates with the connecting component (16) through the steel grid frame (18); The connecting assembly (16) comprises a corrugated groove (23) formed on the inner wall of the steel grid (18) and a limiting protrusion (24) fixed to the outer wall of the ring frame (15), wherein the limiting protrusion (24) is movably limited and matched to the inner wall of the corrugated groove (23); An external expansion type sealing ring (14) is fixed on the top of the ring frame (15), and the outer wall of the external expansion type sealing ring (14) is movably sealed to the inner wall of the top of the steel grid frame (18). The outer wall of the steel grid frame (18) is welded with a flange (17) fixed to the partition (5). A plurality of maintenance doors (8) corresponding to the position and number of the reverse osmosis units (4) are fixed to the top of the top cover (7) by bolts. The bottom of the cotton filter element (19) is connected to a spring 1 (22) through a hard plate (21), and the other end of the spring 1 (22) is connected to the upper surface of the bottom of the steel grid frame (18).

2. A high pressure reverse osmosis device according to claim 1, characterized in that: The inner wall of the alkali liquid tank (11) contains a sodium hydroxide solution. The mixed fluid driving unit (10) comprises an opening valve (25), a conical tube (26), a fluid pump (27) and a liquid suction pipe (28). One end of the conical tube (26) is fixed to the end of the mixed liquid inlet pipe (9), and the water outlet of the fluid pump (27) is fixed to the other end of the conical tube (26). The opening valve (25) is fixed to the bottom of the conical tube (26) downstream of the throat diameter. The liquid suction pipe (28) is fixed to the bottom of the opening valve (25), and the other end of the liquid suction pipe (28) is inserted into the bottom of the alkali liquid tank (11).

3. A high pressure reverse osmosis device according to claim 2, characterized in that: The opening valve (25) comprises a valve housing (38) and a valve core (31) rotatably connected to the inner wall of the valve housing (38) via a valve stem (37); an outer shell (35) is fixed to an outer wall of one side of the valve housing (38); a sliding block (50) is slidably connected to the inner wall of the outer shell (35); a spiral groove (33) is formed on the outer wall of the valve stem (37); an insulating protrusion (36) movably limited to the spiral groove (33) is fixed to the inner wall of the sliding block (50); and a spring (32) is buckled at the bottom of the sliding block (50).

4. A high pressure reverse osmosis device according to claim 3, characterized in that: An electromagnet (34) that cooperates with each other is respectively fixed to the top outer wall of the sliding block (50) and the top inner wall of the outer shell (35).

5. A high pressure reverse osmosis device according to claim 4, characterized in that: A reference electrode (29) and a glass electrode (30) are fixedly embedded in the inner walls on both sides of the pure water outlet (13), respectively. The reference electrode (29) and the glass electrode (30) are electrically connected to the electromagnet (34) via a current amplifier.

6. A high pressure reverse osmosis device according to claim 3, characterized in that: A power control unit (12) for controlling a fluid pump (27) is fixed to one side outer wall of the alkali liquid tank (11).

7. A high pressure reverse osmosis device according to claim 6, characterized in that: The power control unit (12) comprises a protective shell (39) fixed to the side wall of the alkali liquid box (11), a magnetic core (40) fixed to the inner wall of the protective shell (39) via insulating legs (41), and a primary coil (42) and a secondary coil (46) respectively wound around the outer walls on both sides of the magnetic core (40).

8. A high pressure reverse osmosis device according to claim 7, characterized in that: The outer wall of the secondary coil (46) contacts and is electrically conductively connected to an electrode head (45); a fixing block (43) is fixed to the other side of the electrode head (45); a telescopic rod (44) is fixed to the bottom of the fixing block (43); a piston (48) is fixed to the outer wall of the bottom of the telescopic rod (44) by bolts; the top of the pure water outlet (13) is welded and connected to a fork tube (49); the piston (48) is slidably connected to the inner wall of the fork tube (49); a spring three (47) is buckled to the outer wall of the top of the piston (48); the other end of the spring three (47) is buckled to the lower surface of the top of the fork tube (49).

9. A high pressure reverse osmosis device according to claim 8, characterized in that: The primary coil (42) is connected to an AC power source, and the top end of the secondary coil (46) and the electrode head (45) are electrically connected to the connection terminal of the fluid pump (27).

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