Raw water reverse osmosis treatment device for ammonia water preparation

Abstract

The present application relates to ammonia water preparation technical field's one kind ammonia water preparation is with raw water reverse osmosis treatment device, include: shell, the shell is by two shell fixed composition, and the top of shell middle is fixed with water inlet pipe, the top of water inlet pipe is provided with high pressure water inlet subassembly, the bottom of shell middle is fixed with the thick water outlet pipe, and the bottom of thick water outlet pipe is fixedly installed with drain valve, water pressure stabilizing subassembly, water pressure stabilizing subassembly sets up in the inner wall top of shell, the present application constructs multilayer pressure regulation mechanism in the reverse osmosis process, solves the instantaneous pressure impact problem when high pressure pump starts, avoids the physical damage of membrane piece, and constructs the double anti-blocking system of " active rotation cleaning and reverse flushing ", greatly reduces the membrane blockage probability, while in the backwashing stage, the impact force of water flow is weakened sufficiently, ensure that reverse osmosis membrane always bears stable pressure, avoid the problem that the instantaneous pressure is too large in the backwashing stage and leads to the secondary damage of reverse osmosis membrane.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ammonia water preparation, and particularly relates to a raw water reverse osmosis treatment device for ammonia water preparation. BACKGROUND

[0002] In the ammonia water preparation process, the quality of raw water has a crucial influence on the quality of ammonia water. The raw water usually contains various impurities, such as suspended solids, colloids, dissolved salts, microorganisms, etc. If these impurities are not effectively removed, many problems will be caused in the subsequent ammonia water preparation process, for example, suspended solids and colloids may block the pipelines and equipment, affecting the normal operation of the system; dissolved salts may affect the purity and stability of ammonia water; microorganisms may breed under suitable conditions, causing ammonia water to deteriorate. In the prior art, traditional raw water pretreatment methods include sedimentation, filtration, adsorption, etc., but these methods often have difficulty in removing small impurities and dissolved substances in raw water. Reverse osmosis technology, as a high-efficiency membrane separation technology, has been widely used in the field of raw water purification. However, the existing raw water reverse osmosis treatment device for ammonia water preparation still has some deficiencies in actual operation: the reverse osmosis membrane is easily contaminated, and some micron-sized impurities may enter the pores of the membrane, causing membrane clogging problems, thereby shortening the service life of the membrane. Frequent replacement of the membrane not only increases the cost, but also affects the continuity of production.

[0003] To solve the problem of easy clogging of the membrane, some reverse osmosis water treatment devices in the market use a backwashing method, which has a certain market share. For example, the invention patent with the authorization announcement number CN118439768B discloses a high-recovery-rate reverse osmosis water treatment device, which includes a metal filter residue recovery tank, a support rod and a solid-liquid separator. The solid-liquid separator is fixed on the top of the metal filter residue recovery tank through the support rod. A water inlet assembly is fixed on one side of the solid-liquid separator. When the cleaning demand cannot be met by only using the first cleaning assembly, the water flow thrust on the reverse osmosis filter assembly will increase due to clogging. When the water flow thrust on the reverse osmosis filter assembly increases to a certain value, the pressure switch will be linked to open the impurity extraction module. The impurity extraction module can suck away some impurities that cannot be scraped off on the surface of the reverse osmosis filter assembly, so that the reverse osmosis water treatment device does not need to be temporarily closed for backwashing of the reverse osmosis filter assembly, and the purpose of quickly cleaning the reverse osmosis filter assembly can be achieved, thereby effectively improving the recovery efficiency of heavy metals.

[0004] In combination with the above patent, the prior art has the following shortcomings: the prior art adopts backwashing or impurity extraction technology to realize online cleaning without shutdown by reverse flushing the membrane surface or actively extracting the adhering impurities through pressure difference, but this kind of technology still has key shortcomings: during the reverse osmosis water inlet stage and the backwashing cleaning stage, instantaneous high pressure impact will be generated when the high pressure pump starts, and the reverse osmosis membrane is prone to physical damage (such as membrane rupture and membrane wire breakage) due to the inability to withstand instantaneous pressure fluctuation, which not only directly reduces the membrane separation performance, but also may cause the unfiltered raw water to directly penetrate into the product water end, resulting in secondary pollution of water quality, and thus aggravates the quality risk of ammonia water preparation, therefore, the ammonia water preparation raw water reverse osmosis treatment device is proposed to improve the above problems. SUMMARY

[0005] In combination with the above patent, the prior art has the following shortcomings: the prior art adopts backwashing or impurity extraction technology to realize online cleaning without shutdown by reverse flushing the membrane surface or actively extracting the adhering impurities through pressure difference, but this kind of technology still has key shortcomings: during the reverse osmosis water inlet stage and the backwashing cleaning stage, instantaneous high pressure impact will be generated when the high pressure pump starts, and the reverse osmosis membrane is prone to physical damage (such as membrane rupture and membrane wire breakage) due to the inability to withstand instantaneous pressure fluctuation, which not only directly reduces the membrane separation performance, but also may cause the unfiltered raw water to directly penetrate into the product water end, resulting in secondary pollution of water quality, and thus aggravates the quality risk of ammonia water preparation, therefore, the ammonia water preparation raw water reverse osmosis treatment device is proposed to improve the above problems.

[0006] To solve the above problems, the ammonia water preparation raw water reverse osmosis treatment device is provided, which comprises:

[0007] The shell is fixedly composed of two upper and lower shells, a water inlet pipe is fixedly arranged at the middle of the top of the shell, a high-pressure water inlet assembly is arranged at the top of the water inlet pipe, a concentrated water outlet pipe is fixedly arranged at the middle of the bottom of the shell, and a drain valve is fixedly arranged at the bottom of the concentrated water outlet pipe;

[0008] The water pressure stabilizing assembly is arranged on the inner wall of the shell;

[0009] The annular seat is fixedly arranged on the inner wall of the shell and located below the water pressure stabilizing assembly;

[0010] The annular water guide frame is fixedly arranged on the inner wall of the bottom of the shell, a pure water outlet pipe extending out of the shell is fixedly arranged on one side of the bottom of the annular water guide frame, and a second three-way valve is fixedly arranged at the bottom end of the pure water outlet pipe;

[0011] The backwashing assembly is arranged between the side port of the second three-way valve and the high-pressure water inlet assembly;

[0012] The sleeve is fixedly arranged between the bottom of the annular seat and the top of the annular water guide frame, and a plurality of rows of drainage holes are arranged on the sleeve in a spiral distribution;

[0013] The cylinder body is rotatably arranged between the inner wall of the annular seat and the inner wall of the sleeve through a sealing bearing, and a reverse osmosis membrane is fixedly arranged on the inner wall of the cylinder body;

[0014] A cleaning assembly is arranged between the bottom of the water pressure stabilizing assembly and the inner wall of the reverse osmosis membrane.

[0015] The high-pressure water inlet assembly comprises a high-pressure pump fixedly installed at the bottom of the outer wall of the shell, a water inlet pipe fixedly installed at the water inlet end of the high-pressure pump, and a first three-way valve fixedly installed at the water outlet end of the high-pressure pump.

[0016] The water pressure stabilizing assembly comprises a mounting ring fixedly installed at the inner wall of the top of the shell, a conical water distributor fixedly installed at the inner wall of the mounting ring, wherein the conical surface of the conical water distributor faces the advancing direction of raw water, an outer water guide ring fixedly installed at the top of the inner wall of the shell, a plurality of first connecting rods fixedly installed at the bottom of the outer water guide ring, one end of each of the first connecting rods being fixedly connected to the same support cover, an air bag ring fixedly installed at the top of the support cover, an inner water guide disc fixedly installed at the outer wall of the support cover, a sealing ring fixedly installed at the top of the outer wall of the support cover, the top surface of the inner water guide disc and the top surface of the outer water guide ring being designed as inclined surfaces, a spiral flow guide groove being arranged at the circumferential outer wall of the inner water guide disc and the circumferential inner wall of the outer water guide ring, and a plurality of telescopic supports fixedly installed between the top of the inner water guide disc and the outer water guide ring and the bottom of the mounting ring.

[0017] The telescopic supports comprise a plurality of fixed cylinders fixedly installed at the bottom of the mounting ring, a telescopic rod inserted into the inner wall of each of the fixed cylinders, a spring fixedly installed at the top of each of the telescopic rods and the top inner wall of each of the fixed cylinders, and a reinforcing rod fixedly installed at the bottom of each of the telescopic rods and the top of the inner water guide disc and the outer water guide ring.

[0018] The cleaning assembly comprises a rotating rod fixedly installed at the top of the inner wall of the cylinder body and a rotating shaft inserted into the center of the cylinder body, and the support cover is internally provided with a rotating assembly for driving the rotation of the rotating shaft, the rotating rod, and the cylinder body, the outer wall of the top of the rotating shaft is fixedly installed with a spiral blade, the bottom of the spiral blade is fixedly installed with a spiral scraper, and the outer walls of the spiral blade and the spiral scraper are in close contact with the inner wall of the reverse osmosis membrane.

[0019] The rotating assembly comprises a gear ring arranged in the inner wall of the supporting cover through a sealing bearing, the inner wall top of the gear ring is provided with equidistantly distributed gear grooves, rotating rods are equidistantly fixed at the bottom of the gear ring, the inner wall bottom of the gear ring is rotationally connected with a bottom cover through a sealing bearing, the top of the bottom cover is fixed with the inner wall top of the supporting cover, a rotating hole is arranged at the middle of the bottom cover, the top of a rotating shaft is rotationally connected in the rotating hole through a sealing bearing, the outer wall top of the rotating shaft is fixedly installed with a driving gear, a transmission gear is engaged between the driving gear and the gear grooves, the transmission gear is rotationally connected between the supporting cover and the bottom cover through a pin shaft, the outer wall of the rotating shaft is fixedly installed with an impeller, and the impeller is located below the bottom cover, and the position of the impeller corresponds to the discharge end of the spiral flow guide groove.

[0020] The cylinder body comprises a cylinder top seat and a cylinder bottom seat arranged in the inner wall of the annular seat and the inner wall bottom of the sleeve through a sealing bearing, equidistantly annularly distributed reinforcing ribs are fixed at the bottom edges of the cylinder top seat and the cylinder bottom seat, a reverse osmosis membrane is fixed between the bottom of the cylinder top seat and the bottom of the cylinder bottom seat on one side of the reinforcing ribs, and the inner wall top of the cylinder top seat and the inner wall top of the annular seat are designed as inclined surfaces with consistent inclinations.

[0021] The drainage holes are all designed as horn mouths, the caliber of the drainage holes gradually decreases from the reverse osmosis membrane to the outer shell, the inner walls of the drainage holes are all fixed with a plurality of second connecting rods, one end of each of the second connecting rods is fixed with a same dispersion seat, the dispersion seat is located at the center of the drainage hole, and both ends of the dispersion seat are designed as conical surfaces.

[0022] The top of the annular water guide frame is provided with a plurality of rows of equidistantly annularly distributed flow uniforming holes.

[0023] The backwashing assembly comprises a flushing pipe fixedly installed between the side ports of the first three-way valve and the second three-way valve.

[0024] Compared with the prior art, the application has the following advantages:

[0025] 1. In this invention, a multi-level pressure regulation mechanism is constructed through a water pressure stabilization component, which fundamentally solves the problem of instantaneous pressure shock during high-pressure pump startup. Specifically, the conical water distributor can first perform preliminary diversion and buffering of high-pressure inlet water, weakening the initial impact force of the water flow. Then, the spiral guide groove between the outer water guide ring and the inner water guide plate can extend the water flow path, so that the water flow pressure is gradually released along the spiral direction, avoiding sudden local pressure rise. At the same time, the combination design of the air bladder ring and the telescopic frame can absorb pressure fluctuations in real time through the elastic deformation of the air bladder and the extension and contraction compensation of the telescopic rod. When the inlet water pressure rises instantaneously, the air bladder ring is compressed and the spring is deformed, converting the pressure peak into elastic potential energy. Conversely, it releases energy to maintain pressure stability. This three-level pressure regulation of "diversion-buffering-compensation" ensures that the reverse osmosis membrane is always in a stable pressure environment, avoiding physical damage such as membrane rupture and membrane fiber breakage, significantly extending the service life of the reverse osmosis membrane, and reducing equipment replacement costs.

[0026] 2. In this invention, a dual anti-clogging system of "active rotation cleaning and backwashing" is constructed through the synergistic effect of the cleaning component and the backwashing component, which effectively improves the efficiency of membrane surface impurity removal. On the one hand, the impeller in the cleaning component uses the kinetic energy of the water discharged from the spiral guide channel to drive the rotating shaft to rotate, which drives the spiral blades and spiral scraper to rotate along the inner wall of the reverse osmosis membrane. The spiral blades squeeze the raw water to quickly pass through the reverse osmosis membrane and scrape off the impurities attached to the membrane surface in real time, such as colloids and microbial debris. The rotating rod drives the toothed ring and the cylinder to rotate synchronously, so that all areas of the membrane surface can be cleaned evenly, avoiding local impurity accumulation. On the other hand, the backwashing component is connected to the second three-way valve and the first three-way valve through the flushing pipe, which can sequentially reverse the flow of purified water to the reverse osmosis membrane. In conjunction with the rotating reverse osmosis membrane, the residual impurities in the membrane pores are deeply flushed, further restoring the membrane flux. The dual cleaning mechanism greatly reduces the probability of membrane clogging, ensures stable filtration efficiency, and reduces production interruptions caused by membrane clogging.

[0027] 3. In this invention, during the backwashing process, the inlet pipe of the high-pressure pump is connected to the purified water tank that collects pure water. The pure water is then transported back to the reverse osmosis membrane through the flushing pipe. At this time, the water flow is diverted through the equalization hole of the annular water guide frame, which initially releases the pressure. Then, the water flow enters the large-diameter end of the drain hole from the small-diameter end. The sudden expansion of space reduces the water flow velocity and further releases the pressure. At the same time, when the water flow comes into contact with the conical surface of the dispersion seat, it is evenly dispersed to the inner wall of the drain hole, avoiding direct impact of the water flow on the reverse osmosis membrane. Meanwhile, the conical surface guides the water flow out along a gentle path, further weakening the impact force of the water flow. This ensures that the reverse osmosis membrane always bears a stable pressure during the backwashing process, achieving both deep removal of impurities and avoiding the problem of secondary damage to the reverse osmosis membrane caused by excessive instantaneous pressure during the backwashing stage, thus further extending the service life of the reverse osmosis membrane. Attached Figure Description

[0028] Figure 1 A three-dimensional structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0029] Figure 2 A front view cross-sectional view of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0030] Figure 3 A conical water distributor and sleeve structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0031] Figure 4 A spiral flow guide groove and air bag ring structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0032] Figure 5 A reinforcing rod and spring structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0033] Figure 6 A impeller and driving gear structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0034] Figure 7 A cylinder structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0035] Figure 8 A dispersion seat and drain hole structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application;

[0036] Figure 9 A backwashing component structure schematic diagram of a raw water reverse osmosis treatment device for ammonia water preparation of the present application.

[0037] Explanation of reference numerals in the drawing:

[0038] 1, shell; 2, water inlet pipe; 3, connecting pipe; 4, backwashing assembly; 41, flushing pipe; 5, second three-way valve; 6, high-pressure pump; 7, pure water outlet pipe; 8, concentrated water outlet pipe; 9, water pressure stabilizing assembly; 91, mounting ring; 92, conical water distributor; 93, telescopic support; 931, fixed cylinder; 932, telescopic rod; 933, reinforcing rod; 934, spring; 94, outer water guide ring; 95, inner water guide disc; 96, spiral flow guide groove; 97, first connecting rod; 98, support cover; 99, air bag ring; 910, sealing ring; 10, annular seat; 11, cylinder body; 111, cylinder top seat; 112, cylinder bottom seat; 113, reinforcing rib; 12, reverse osmosis membrane; 13, sleeve; 14, drain hole; 15, annular water guide frame; 16, dispersion seat; 17, cleaning assembly; 171, rotating rod; 172, rotating shaft; 173, spiral blade; 174, spiral scraper; 175, bottom cover; 176, impeller; 177, gear ring; 178, transmission gear; 179, driving gear; 18, flow equalizing hole; 19, second connecting rod; 20, first three-way valve. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "fixedly mounted", "connected", "connected", "provided" should be understood broadly, for example, it can be fixedly connected, provided, or detachably connected, provided, or integrally connected, provided. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Please refer to Figures 1-9 The present application provides a raw water reverse osmosis treatment device for ammonia water preparation, comprising:

[0043] The shell 1 is fixed by two upper and lower shells, and the top middle of the shell 1 is fixed with a water inlet pipe 2, and the water inlet pipe 2 is provided with a high-pressure water inlet assembly, the high-pressure water inlet assembly comprises a high-pressure pump 6 fixedly installed on the outer wall of the shell 1, and the water inlet end of the high-pressure pump 6 is fixedly installed with an inlet pipe, and the water outlet end of the high-pressure pump 6 is fixedly installed with a first three-way valve 20, and the top end of the first three-way valve 20 is fixedly installed with a connecting pipe 3 between the top of the water inlet pipe 2, and the bottom middle of the shell 1 is fixed with a concentrated water outlet pipe 8, and the bottom of the concentrated water outlet pipe 8 is fixedly installed with a drain valve;

[0044] The water pressure stabilizing assembly 9 is arranged on the inner wall of the shell 1, and the water pressure stabilizing assembly 9 comprises a mounting ring 91 fixedly installed on the top inner wall of the shell 1, and the inner wall of the mounting ring 91 is fixed with a conical water distributor 92, the conical surface of the conical water distributor 92 faces the forward direction of the raw water, the top inner wall of the shell 1 is fixed with an outer water guide ring 94, and the inner wall of the shell 1 is fixed with a plurality of first connecting rods 97 located at the bottom of the outer water guide ring 94, one end of the first connecting rod 97 is fixed with a same support cover 98, the top middle of the support cover 98 is fixedly installed with an air bag ring 99, and the top of the air bag ring 99 is fixedly installed with an inner water guide disc 95 sleeved on the outer wall of the support cover 98, the outer wall top of the support cover 98 is fixedly installed with a sealing ring 910 abutting on the inner wall of the inner water guide disc 95, the top surface of the inner water guide disc 95 and the top surface of the outer water guide ring 94 are designed as inclined surfaces, and the circumferential outer wall of the inner water guide disc 95 and the circumferential inner wall of the outer water guide ring 94 are provided with a same spiral flow guide groove 96, and the top of the inner water guide disc 95 and the outer water guide ring 94 and the bottom of the mounting ring 91 are fixed with equidistantly distributed telescopic supports 93, the telescopic support 93 comprises a fixed cylinder 931 fixedly installed on the bottom of the mounting ring 91, the inner wall of the fixed cylinder 931 is inserted with a telescopic rod 932, the top of the telescopic rod 932 and the top inner wall of the fixed cylinder 931 are fixedly installed with a spring 934, and the bottom of the telescopic rod 932 and the top of the inner water guide disc 95 and the outer water guide ring 94 are fixed with a reinforcing rod 933, the raw water entering the shell 1 is first preliminarily divided by the conical water distributor 92 on the inner wall of the mounting ring 91, and then flows along the spiral flow guide groove 96 between the outer water guide ring 94 and the inner water guide disc 95 to release pressure, when pressure fluctuation occurs, the inner water guide disc 95 compresses the air bag ring 99, the telescopic rod 932 moves along the fixed cylinder 931 and compresses the spring 934, and the pressure peak value is absorbed by the elastic deformation, and when the pressure decreases, the energy is released to maintain stability, realizing three-stage pressure regulation, ensuring that the reverse osmosis membrane 12 is always in a stable pressure environment, avoiding physical damage such as membrane rupture and membrane rupture;

[0045] The annular seat 10 is fixedly installed on the inner wall of the shell 1, and the annular seat 10 is located below the water pressure stabilizing assembly 9;

[0046] A ring-shaped water guide frame 15 is fixed to the inner wall of the bottom of the shell 1, the top of the ring-shaped water guide frame 15 is provided with a plurality of rows of flow holes 18 which are equidistantly arranged in a ring shape, one side of the bottom of the ring-shaped water guide frame 15 is fixed with a pure water outlet pipe 7 which extends out of the shell 1, and the bottom end of the pure water outlet pipe 7 is fixedly installed with a second three-way valve 5;

[0047] A backwashing assembly 4 is arranged between the side port of the second three-way valve 5 and the high-pressure water inlet assembly;

[0048] A sleeve 13 is fixed between the bottom of the ring-shaped seat 10 and the top of the ring-shaped water guide frame 15, and a plurality of rows of drainage holes 14 are equidistantly arranged in a spiral manner on the sleeve 13;

[0049] A cylinder body 11 is rotatably arranged between the inner wall of the ring-shaped seat 10 and the inner wall of the sleeve 13 through a sealing bearing, and the inner wall of the cylinder body 11 is fixedly installed with a reverse osmosis membrane 12;

[0050] The cleaning assembly 17 is arranged between the bottom of the water pressure stabilizing assembly 9 and the inner wall of the reverse osmosis membrane 12, and comprises a rotating rod 171 fixedly installed at the top of the inner wall of the barrel 11 at equal intervals and a rotating shaft 172 inserted at the center of the barrel 11, and a rotating assembly for driving the rotating shaft 172 and the rotating rod 171 and the barrel 11 to rotate is arranged in the support cover 98. The outer wall top of the rotating shaft 172 is fixedly installed with a spiral blade 173, and the bottom of the spiral blade 173 is fixedly installed with a spiral scraper 174. The outer walls of the spiral blade 173 and the spiral scraper 174 are in close contact with the inner wall of the reverse osmosis membrane 12. The rotating assembly comprises a gear ring 177 rotatably arranged in the inner wall of the support cover 98 through a sealing bearing, and the inner wall top of the gear ring 177 is provided with equidistantly distributed gear grooves. The rotating rod 171 is fixedly arranged at the bottom of the gear ring 177 at equal intervals. The inner wall bottom of the gear ring 177 is rotatably connected with a bottom cover 175 through a sealing bearing, and the top of the bottom cover 175 is fixedly connected with the inner wall top of the support cover 98. A rotating hole is arranged at the middle of the bottom cover 175. The top of the rotating shaft 172 is rotatably connected in the rotating hole through a sealing bearing. The outer wall top of the rotating shaft 172 is fixedly installed with a driving gear 179, and the driving gear 179 is engaged with a transmission gear 178 between the gear grooves. The transmission gear 178 is rotatably connected between the support cover 98 and the bottom cover 175 through a pin shaft. The outer wall of the rotating shaft 172 is fixedly installed with an impeller 176, and the impeller 176 is located below the bottom cover 175. The position of the impeller 176 corresponds to the discharge end of the spiral flow guide groove 96. The water flow discharged from the spiral flow guide groove 96 will impact the impeller 176, drive the rotating shaft 172 to rotate, and the driving gear 179 on the rotating shaft 172 drives the gear ring 177 to rotate through the transmission gear 178. The gear ring 177 drives the barrel 11 to rotate through the rotating rod 171, so that the reverse osmosis membrane 12 and the rotating shaft 172 rotate synchronously, so that the spiral blade 173 on the rotating shaft 172 extrudes water molecules to quickly penetrate through the reverse osmosis membrane 12, and cooperates with the spiral scraper 174 in rotation to scrape off impurities on the surface of the reverse osmosis membrane 12. Moreover, the water pressure stabilizing assembly 9 can not only realize the pressure stabilizing effect, but also form a stable spiral water flow through the spiral flow guide groove 96 therein, accurately impact the impeller 176 in the cleaning assembly 17, so that the rotating shaft 172 and the barrel 11 obtain stable rotating power. Compared with the unstable rotation speed problem of the cleaning assembly caused by pressure fluctuation in the traditional device, the design can stably control the rotation fluctuation of the spiral blade 173 and the spiral scraper 174, ensure that each area of the membrane surface is uniformly cleaned, and avoid local impurity accumulation. Moreover, compared with the passive pressure control mode relying on the pressure stabilizing valve in the prior art, the water pressure stabilizing assembly 9 adopts a pure mechanical structure to realize active pressure regulation and control, has faster response speed (millisecond level), is not affected by electronic element failure, has higher reliability in the ammonia water preparation environment which has higher safety requirement, and does not need an additional power source, realizes pressure regulation and control through the energy of the water flow itself, reduces energy consumption, and meets the energy-saving and environment-friendly industrial trend.

[0051] In the application, the barrel 11 comprises a barrel top seat 111 and a barrel bottom seat 112 which are rotatably arranged on the inner wall of the annular seat 10 and the bottom of the inner wall of the sleeve 13 through sealing bearings, and reinforcing ribs 113 are fixed on the bottom edges of the barrel top seat 111 and the barrel bottom seat 112 in a ring shape at equal distances, the reverse osmosis membrane 12 is fixed on one side of the reinforcing ribs 113 between the bottom of the barrel top seat 111 and the bottom of the barrel bottom seat 112, the inner wall top of the barrel top seat 111 and the inner wall top of the annular seat 10 are designed as inclined surfaces with consistent inclinations, the reinforcing ribs 113 provide a rigid support frame for the reverse osmosis membrane 12, so that the reverse osmosis membrane 12 is prevented from being deformed and displaced due to pressure in the process of high-pressure water inflow or backwashing, and the membrane surface is ensured to always maintain a stable filtering form.

[0052] In the application, the drainage holes 14 are all designed as flared mouths, the diameters of the drainage holes 14 gradually decrease from the reverse osmosis membrane 12 to the outer shell 1, the inner walls of the drainage holes 14 are all fixed with a plurality of second connecting rods 19, one end of each of the second connecting rods 19 is fixed with the same dispersion seat 16, the dispersion seat 16 is located at the center of the drainage hole 14, both ends of the dispersion seat 16 are designed as conical surfaces, pure water in the backwashing process is shunted through the flow equalizing holes 18, so that the pressure is preliminarily released, then the water flow enters from the small-diameter end of the drainage hole 14 to the large-diameter end, the space is suddenly expanded to reduce the water flow speed, the pressure is further released, at the same time, when the water flow contacts the conical surface of the dispersion seat 16, the water flow is evenly dispersed to the inner wall of the drainage hole 14, so that the water flow is prevented from directly impacting the reverse osmosis membrane 12, the problem that the reverse osmosis membrane 12 is secondarily damaged due to excessive instantaneous pressure in the backwashing stage is avoided, and the service life of the reverse osmosis membrane 12 is further prolonged.

[0053] In the application, the backwashing assembly 4 comprises a flushing pipe 41 which is fixedly installed between the first three-way valve 20 and the side port of the second three-way valve 5, so that the pure water enters the annular water guide frame 15 through the high-pressure pump 6, the flushing pipe 41 and the pure water outlet pipe 7, is shunted through the flow equalizing holes 18 and then enters the drainage hole 14, thereby backwashing the reverse osmosis membrane 12, and ensuring that the reverse osmosis membrane 12 continuously and stably works.

[0054] In summary, the working principle of the application is as follows: the high-pressure pump 6 is started, the raw water is delivered to the first three-way valve 20 after being pressurized by the high-pressure pump 6, the first three-way valve 20 is adjusted to make the raw water enter the housing 1 through the connecting pipe 3 and the water inlet pipe 2, the raw water entering the housing 1 is first preliminarily distributed by the conical water distributor 92 on the inner wall of the mounting ring 91, and then flows along the spiral flow guide groove 96 between the outer water guide ring 94 and the inner water guide disc 95 to release pressure, when pressure fluctuation occurs, the inner water guide disc 95 will compress the air bag ring 99, the telescopic rod 932 moves along the fixed cylinder 931 and compresses the spring 934, and the pressure peak value is absorbed through elastic deformation, and when the pressure decreases, the energy is released to maintain stability, the water flow treated stably is guided along the inclined surface to the annular seat 10, then the water flow enters the cylinder body 11, the water molecules penetrate the reverse osmosis membrane 12 under the action of pressure, are discharged through the drain hole 14 of the sleeve 13, are collected through the flow equalizing hole 18 of the annular water guide frame 15, and finally are guided out to the pure water collecting tank of the subsequent ammonia water preparation link through the pure water outlet pipe 7 and the second three-way valve 5, and the concentrated water that does not penetrate the reverse osmosis membrane 12 is discharged through the concentrated water outlet pipe 8 and the drain valve;

[0055] Moreover, the water flow discharged from the spiral flow guide groove 96 will impact the impeller 176, drive the rotating shaft 172 to rotate, the driving gear 179 on the rotating shaft 172 drives the gear ring 177 to rotate through the transmission gear 178, the gear ring 177 drives the cylinder body 11 to rotate through the rotating rod 171, and the spiral blade 173 on the rotating shaft 172 accelerates the water molecules to penetrate the reverse osmosis membrane 12, and cooperates with the spiral scraper 174 in rotation to scrape off impurities on the surface of the reverse osmosis membrane 12;

[0056] When backwashing maintenance is needed, the inlet pipe of the high-pressure pump 6 is connected to the pure water collecting tank, the second three-way valve 5 and the first three-way valve 20 are adjusted, pure water enters the annular water guide frame 15 through the flushing pipe 41 and the pure water outlet pipe 7, is distributed after being distributed through the flow equalizing hole 18, enters from the small-diameter end of the drain hole 14, is dispersed after being dispersed through the dispersion seat 16, and stably flushes the reverse osmosis membrane 12, the sewage generated in the flushing process is discharged through the concentrated water outlet pipe 8, the continuous and stable work of the reverse osmosis membrane 12 is ensured, at the same time, the water pressure during the flushing process is weakened, and it is ensured that the reverse osmosis membrane 12 always bears stable pressure in the reverse flushing process, which not only realizes deep removal of impurities, but also avoids the problem that the reverse osmosis membrane 12 is secondarily damaged due to excessive instantaneous pressure in the backwashing stage.

[0057] In combination with the current actual demand, the above-mentioned embodiments adopted by the application are not limited to this, various changes made within the knowledge range of those skilled in the art without departing from the concept of the application still fall within the protection range of the application.

Claims

1. A reverse osmosis treatment device for raw water in ammonia preparation, characterized in that, Include: The shell (1) is fixed by two shell bodies from top to bottom, and the top middle of the shell (1) is fixed with a water inlet pipe (2), the top of the water inlet pipe (2) is provided with a high pressure water inlet assembly, the bottom middle of the shell (1) is fixed with a concentrated water outlet pipe (8), and the bottom of the concentrated water outlet pipe (8) is fixedly installed with a drain valve; Water pressure stabilizing assembly (9), the water pressure stabilizing assembly (9) is arranged on the inner wall of the shell (1) top; Annular seat (10), the annular seat (10) is fixedly installed on the inner wall of the shell (1), and the annular seat (10) is located below the water pressure stabilizing assembly (9); Annular water guide frame (15), the annular water guide frame (15) is fixed on the bottom inner wall of the shell (1), the bottom side of the annular water guide frame (15) is fixed with a pure water outlet pipe (7) extending out of the shell (1), and the bottom end of the pure water outlet pipe (7) is fixedly installed with a second three-way valve (5); Backwash assembly (4), the backwash assembly (4) is arranged between the side port of the second three-way valve (5) and the high pressure water inlet assembly; Sleeve (13), the sleeve (13) is fixed between the bottom of the annular seat (10) and the top of the annular water guide frame (15), and a plurality of rows of drainage holes (14) are arranged on the sleeve (13) in equal distance and spiral distribution; Cylinder (11), the cylinder (11) is rotatably arranged between the inner wall of the annular seat (10) and the inner wall of the sleeve (13) through the sealing bearing, and the inner wall of the cylinder (11) is fixedly installed with a reverse osmosis membrane (12); Cleaning assembly (17), the cleaning assembly (17) is arranged between the bottom of the water pressure stabilizing assembly (9) and the inner wall of the reverse osmosis membrane (12).

2. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 1, characterized by The high pressure water inlet assembly includes a high pressure pump (6) fixedly installed on the outer wall of the shell (1), and the water inlet end of the high pressure pump (6) is fixedly installed with an inlet pipe, the water outlet end of the high pressure pump (6) is fixedly installed with a first three-way valve (20), and the top port of the first three-way valve (20) and the top of the water inlet pipe (2) are fixedly installed with a connecting pipe (3).

3. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 2, characterized by The water pressure stabilizing assembly (9) comprises a mounting ring (91) fixedly installed on the inner wall of the top of the shell (1), and the inner wall of the mounting ring (91) is fixed with a conical water distributor (92), the conical surface of the conical water distributor (92) faces the advancing direction of raw water, the inner wall of the top of the shell (1) is fixed with an outer water guide ring (94), and the inner wall of the shell (1) is fixed with a plurality of first connecting rods (97) located at the bottom of the outer water guide ring (94), one end of the first connecting rod (97) is fixed with a same supporting cover (98), the top of the supporting cover (98) is fixedly installed with an air bag ring (99), and the top of the air bag ring (99) is fixedly installed with an inner water guide disc (95) sleeved on the outer wall of the supporting cover (98), the outer wall of the top of the supporting cover (98) is fixedly installed with a sealing ring (910) abutting against the inner wall of the inner water guide disc (95), the top surface of the inner water guide disc (95) and the top surface of the outer water guide ring (94) are designed into inclined surfaces, and the circumferential outer wall of the inner water guide disc (95) and the circumferential inner wall of the outer water guide ring (94) are provided with a same spiral flow guide groove (96), and the top of the inner water guide disc (95) and the outer water guide ring (94) and the bottom of the mounting ring (91) are fixed with equidistantly distributed telescopic supports (93).

4. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 3, characterized by The telescopic support (93) comprises a fixed cylinder (931) fixedly installed at the bottom of the mounting ring (91), and the inner wall of the fixed cylinder (931) is inserted with telescopic rods (932), the top of the telescopic rod (932) and the top inner wall of the fixed cylinder (931) are fixedly installed with springs (934), and the bottom of the telescopic rod (932) is fixed with a reinforcing rod (933) and the top of the inner water guide disc (95) and the outer water guide ring (94).

5. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 4, characterized by The cleaning assembly (17) comprises rotating rods (171) fixedly installed at the top of the inner wall of the cylinder body (11) and a rotating shaft (172) inserted at the center of the cylinder body (11), and the supporting cover (98) is provided with a rotating assembly for driving the rotating shaft (172), the rotating rod (171) and the cylinder body (11) to rotate, the outer wall of the top of the rotating shaft (172) is fixedly installed with a spiral blade (173), and the bottom of the spiral blade (173) is fixedly installed with a spiral scraper (174), and the outer walls of the spiral blade (173) and the spiral scraper (174) are abutted against the inner wall of the reverse osmosis membrane (12).

6. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 5, characterized by The rotating assembly comprises a gear ring (177) rotatingly arranged in the inner wall of the supporting cover (98) through a sealing bearing, the inner wall top of the gear ring (177) is provided with equidistantly distributed gear slots, rotating rods (171) are equidistantly fixed at the bottom of the gear ring (177), the inner wall bottom of the gear ring (177) is rotationally connected with a bottom cover (175) through a sealing bearing, the top of the bottom cover (175) is fixed with the inner wall top of the supporting cover (98), a rotating hole is formed in the middle of the bottom cover (175), the top of a rotating shaft (172) is rotationally connected in the rotating hole through a sealing bearing, the outer wall top of the rotating shaft (172) is fixedly installed with a driving gear (179), the driving gear (179) is engaged with a transmission gear (178) between the gear slots, the transmission gear (178) is rotationally connected between the supporting cover (98) and the bottom cover (175) through a pin shaft, the outer wall of the rotating shaft (172) is fixedly installed with an impeller (176), and the impeller (176) is located below the bottom cover (175), the position of the impeller (176) corresponds to the discharge end of the spiral flow guide groove (96).

7. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 6, characterized by The barrel (11) comprises a barrel top seat (111) and a barrel bottom seat (112) rotatingly arranged in the inner wall of the annular seat (10) and the inner wall bottom of the sleeve (13) through sealing bearings, the bottom edges of the barrel top seat (111) and the barrel bottom seat (112) are fixed with equidistantly annularly distributed reinforcing ribs (113), the reverse osmosis membrane (12) is fixed between one side of the reinforcing rib (113) and the bottom of the barrel top seat (111) and the barrel bottom seat (112), and the inner wall top of the barrel top seat (111) and the inner wall top of the annular seat (10) are designed as inclined surfaces with consistent inclinations.

8. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 7, characterized by The drainage holes (14) are all designed as horn mouths, the diameters of the drainage holes (14) gradually decrease from the reverse osmosis membrane (12) to the outer shell (1), the inner walls of the drainage holes (14) are all fixed with a plurality of second connecting rods (19), one end of each second connecting rod (19) is fixed with a same dispersion seat (16), the dispersion seat (16) is located at the center of the drainage hole (14), and both ends of the dispersion seat (16) are designed as conical surfaces.

9. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 7, characterized by The top of the annular water guide frame (15) is provided with a plurality of rows of equidistantly annularly distributed flow uniforming holes (18).

10. The raw water reverse osmosis treatment apparatus for ammonia water production according to claim 8, characterized by The backwashing assembly (4) comprises a flushing pipe (41) fixedly installed between the side ports of the first three-way valve (20) and the second three-way valve (5).

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