Deep purification device for urban healthy direct drinking water and use method

Abstract

The invention relates to the technical field of urban water quality purification, in particular to an urban healthy direct drinking water deep purification device and a use method.The urban healthy direct drinking water deep purification device comprises an equipment frame, a multi-membrane separation structure and a terminal purification structure are bolted to the interior of the equipment frame, and the multi-membrane separation structure comprises a first membrane shell; the first membrane shell is bolted to the top of the interior of the equipment frame, a primary purification mechanism is arranged in the first membrane shell, the bottom of the first membrane shell is communicated with a second membrane shell, and a hollow fiber nanofiltration membrane and a reverse osmosis membrane are arranged in the second membrane shell; the primary purification mechanism comprises a fixed end cover and a movable end cover, and a plurality of elastic supporting nets are clamped between the fixed end cover and the movable end cover. The urban healthy direct drinking water deep purification device and the use method have the advantages that membrane filtration is integrated, water quality is deeply purified through a dynamic terminal, and the safety and the purification efficiency of urban direct drinking water are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of urban water purification, in particular to a kind of urban healthy direct drinking water advanced purification device and use method. BACKGROUND

[0002] It is known that urban direct drinking water purification device is through membrane separation process (such as reverse osmosis system) to tap water for advanced purification, provides the direct drinking water supply system that meets the "drinking water quality standard".

[0003] Urban direct drinking water purification device is the key equipment to guarantee public drinking water safety, the problems existing in prior art are: the hollow fiber nanofiltration membrane and reverse osmosis membrane of traditional urban direct drinking water purification device are independently arranged, water flow path is long, prone to membrane assembly damage due to water quality fluctuation;In addition, the water separated by membrane is directly output, or only through static adsorption or single ultraviolet irradiation for terminal treatment, water flow and adsorption material are not fully contacted, there are dead angles in ultraviolet irradiation, it is difficult to completely remove residual organic matter and microorganism, affect the safety of effluent. SUMMARY

[0004] (I) technical problem solved

[0005] In view of the deficiencies in the prior art, the present application provides a kind of urban healthy direct drinking water advanced purification device and use method, with membrane filtration integrated, and dynamic terminal advanced purification water quality, improve the safety and purification efficiency of urban direct drinking water.

[0006] (II) technical scheme

[0007] The above technical purpose of the present application is realized by the following technical scheme: a kind of urban healthy direct drinking water advanced purification device, including equipment frame, the inside of equipment frame is respectively hinged with multiple membrane separation structure and terminal purification structure, the multiple membrane separation structure includes first membrane shell, the first membrane shell is hinged in the top of equipment frame interior, the inside of first membrane shell is provided with primary purification mechanism, the bottom of first membrane shell is communicated with second membrane shell, and the inside of second membrane shell is provided with hollow fiber nanofiltration membrane and reverse osmosis membrane;

[0008] The primary purification mechanism includes fixed end cover and movable end cover, a plurality of elastic support nets are clamped between the fixed end cover and the movable end cover, the plurality of elastic support nets are coaxially arranged, coarse filter PP cotton, modified activated carbon fiber and ultrafiltration membrane are respectively arranged between adjacent two elastic support nets, the coarse filter PP cotton, modified activated carbon fiber and ultrafiltration membrane are sequentially arranged from outside to inside, displacement assembly is arranged on the top of movable end cover, and the displacement assembly is used in cooperation with movable end cover.

[0009] The above technical scheme is adopted, the multi-membrane separation structure is arranged, after the raw water enters the first membrane shell, the multi-stage pretreatment is sequentially completed by the coarse filter PP cotton, the modified activated carbon fiber and the ultrafiltration membrane of the primary purification mechanism, the pretreated water enters the second membrane shell, and the deep purification is sequentially performed by the hollow fiber nanofiltration membrane and the reverse osmosis membrane, the purified water enters the terminal purification structure for further treatment, the primary purification mechanism and the membrane assembly are integrated in the equipment frame, the water flow path is shortened, the influence of water quality fluctuation on the membrane assembly is reduced, and the membrane damage is avoided, the multi-layer filtration design of the primary purification mechanism provides protection for the subsequent membrane separation, and the service life of the membrane assembly is prolonged, the connection of the terminal purification structure and the membrane separation structure ensures that the water quality reaches the direct drinking water standard after multi-stage purification, and the problem of incomplete purification caused by the disconnection of the traditional device membrane separation and terminal treatment is solved.

[0010] The displacement assembly further comprises a connecting cover, the connecting cover is located at the top of the movable end cover, the bottom of the connecting cover is provided with a plurality of coaxially arranged flexible connecting blocks, and the bottom of the flexible connecting block is respectively bonded with the coarse filter PP cotton, the modified activated carbon fiber and the ultrafiltration membrane, a magnetic rod penetrates through the inside of the movable end cover, a connecting piece is sleeved on the top of the surface of the magnetic rod, the bottom of the connecting piece is bolted with the movable end cover, a support is bolted on the top of the fixed end cover, the bottom of the magnetic rod penetrates into the inside of the support, a connecting plate and a return spring are sleeved on the bottom of the surface of the magnetic rod, and the top and bottom of the return spring are respectively bolted with the connecting disc and the support, and an electromagnet is bolted on the top of the inner wall of the connecting cover.

[0011] The above technical scheme is adopted, the displacement assembly is arranged, when the displacement assembly works, the electromagnet is electrified to generate magnetic force to repel the magnetic rod to move downward, and synchronously drives the movable end cover to move downward, and makes the return spring compressed, the movement of the movable end cover makes the elastic support net compressed, after the electromagnet is de-energized, the return spring is reset to push the magnetic rod to move upward, the elasticity of the elastic support net is utilized to make the elastic support net vibrate, and since the inside of the elastic support net is welded with a semicircular contact rod, the contact rod can transmit the vibration to the coarse filter PP cotton, the modified activated carbon fiber and the ultrafiltration membrane, so as to drive the coarse filter PP cotton, the modified activated carbon fiber and the ultrafiltration membrane to vibrate synchronously, the displacement assembly drives the filter core to vibrate, the pollutants adhered to the surface can be shaken off, the blockage is reduced, and the filter core replacement cycle is prolonged, compared with the traditional manual cleaning, the structure realizes the automatic cleaning of the primary purification mechanism, and the maintenance cost is reduced.

[0012] The top of the surface of the first membrane shell is threadedly sleeved with a sealing cover, the top of the connecting cover is provided with a positioning ring, the bottom of the positioning ring is annularly welded with a support rod, the bottom of the support rod is bolted with the connecting cover, and the top of the positioning ring is in close contact with the inner wall of the sealing cover.

[0013] By the threaded connection design of the sealing cover, the sealing property of the first membrane shell is ensured to prevent water leakage, and the filter core is convenient to disassemble and replace; and the cooperation of the positioning ring and the supporting rod facilitates fixing the primary purification mechanism in the first membrane shell.

[0014] The top of the fixed end cover and the bottom of the movable end cover are both provided with a plurality of annular clamping grooves, and the elastic supporting net, the coarse filtering PP cotton, the modified activated carbon fiber and the ultrafiltration membrane are clamped with the fixed end cover and the movable end cover through the annular clamping grooves.

[0015] By the annular clamping groove design, the independent disassembly of each layer of filter core is realized, the material waste problem of traditional integrated filter core is solved, the filter core is convenient to quickly replace through the clamping structure, the maintenance time is shortened, the flexibility and economy of the device are improved, and the differentiated needs of filter cores for different water qualities are adapted.

[0016] The bottom of the fixed end cover and the bottom of the movable end cover are both provided with a plurality of annular clamping grooves, and the elastic supporting net, the coarse filtering PP cotton, the modified activated carbon fiber and the ultrafiltration membrane are clamped with the fixed end cover and the movable end cover through the annular clamping grooves.

[0017] By the cooperation of the hollow groove and the residue discharging groove, an exhaust channel is provided for the detached pollutants, secondary pollution caused by the accumulation of pollutants in the filter core gap is avoided, the residue discharging channel realizes automatic discharge of the pollutants, and the vibration cleaning function of the displacement assembly is matched, so that the self-cleaning ability of the primary purification mechanism is further improved.

[0018] The hollow fiber nanofiltration membrane and the reverse osmosis membrane are communicated with a shell, and a supporting ring is welded in the interior of the shell, a limiting cylinder is welded in the interior of the supporting ring, a moving rod is slidably penetrated into the interior of the limiting cylinder, a blocking block is welded to the rear side of the moving rod, a plurality of flow guide holes are annularly formed in the interior of the blocking block, a fixing ring and a pre-tightening spring are sleeved on the surface of the moving rod, the pre-tightening spring is in contact with the moving rod and the limiting cylinder on the side close to the moving rod and the limiting cylinder respectively, an adjusting nut is threadedly sleeved on the front side of the surface of the moving rod, and the rear side of the adjusting nut is in close contact with the fixing ring.

[0019] The technical scheme is adopted, when water pressure between the hollow fiber nanofiltration membrane and the reverse osmosis membrane fluctuates, when the water inlet pressure is too high, the pressure overcomes the elastic force of the pre-tightening spring, the blocking block is close to the flow channel and the flow area is reduced, the membrane assembly is prevented from being damaged due to high pressure, when the pressure is too low, the elastic force of the pre-tightening spring is used to make the blocking block move forward to increase the flow, the purification efficiency is ensured, the tightness of the pre-tightening spring can be adjusted through the rotating adjusting nut, different water pressure scenes are adapted, and the setting of the guide hole can ensure that the water flow stably passes through the shell and enters the reverse osmosis membrane, therefore, the pressure self-adaptive adjusting structure is formed by cooperation of the moving rod, the blocking block and the pre-tightening spring, the impact of water quality fluctuation on the membrane assembly can be buffered, the membrane damage is avoided, and the problem that the traditional independent membrane is easily affected by water pressure fluctuation is solved.

[0020] The application is further provided as follows: the terminal purification mechanism comprises a purification cavity, the purification cavity is communicated with the second membrane shell through a pipeline, a moving plate is slidably arranged in the purification cavity, an ultraviolet lamp tube and an activated carbon loaded nano-TiO2 composite module are respectively penetrated into the moving plate, quartz tubes are sleeved on surfaces of the activated carbon loaded nano-TiO2 composite module and the ultraviolet lamp tube, the inside of the middle quartz tube is of a porous structure, the ultraviolet lamp tube is annularly distributed outside the activated carbon loaded nano-TiO2 composite module, and a plurality of flow holes are formed in the moving plate, and turbulence protrusions are annularly arranged in the flow holes.

[0021] The above technical scheme is adopted, the terminal purification mechanism is arranged, during terminal purification, the moving plate reciprocally slides in the purification cavity, water flow circulates in the two spaces through the flow holes, the turbulence protrusions make the water flow generate vortex, the activated carbon loaded nano-TiO2 composite module adsorbs and degrades organic matters, and the annularly distributed ultraviolet lamp tube irradiates the water flow through the quartz tube in all directions to inactivate microorganisms, the moving plate and the flow holes are designed to make the water flow form dynamic circulation, the problem of insufficient contact in static adsorption is solved, the turbulence protrusions enhance water flow disturbance, the action efficiency with the composite adsorption material is improved, and the cooperation of the annular ultraviolet lamp tube and the quartz tube eliminates the irradiation dead angle, ensures complete inactivation of microorganisms, and improves terminal purification effect and water outlet safety.

[0022] The application is further provided as follows: two supporting plates are bolted to the top of the purification cavity, a connecting plate is slidably arranged between the tops of the two supporting plates, the bottom of the connecting plate is bolted to the moving plate, a rotating disc is rotatably connected between the front sides of the tops of the two supporting plates, a connecting rod is rotatably connected to the top of the rotating disc, and the other end of the connecting rod is rotatably connected to the connecting plate.

[0023] Adopting the technical scheme, the waterproof motor is installed below the two supporting plates, the rotating disc is driven to rotate by the waterproof motor, the connecting plate is pushed and pulled by the connecting rod when the rotating disc rotates, the connecting plate slides along the supporting plate, and the moving plate is driven to reciprocate in the purification cavity, the linkage structure of the rotating disc and the connecting rod provides stable reciprocating driving force for the moving plate, ensures uniform water circulation, enhances the stability of dynamic purification, makes the water flow fully contact with the adsorption material and the ultraviolet light, and improves the purification efficiency.

[0024] The application is further provided as follows: the four corners of the moving plate are all penetrated by limiting sliding columns, and the two ends of the limiting sliding columns are bolted with the inner wall of the purification cavity.

[0025] Adopting the technical scheme, the limiting sliding columns provide accurate guidance for the moving plate, prevent the moving plate from deviating or tilting due to water resistance during movement, ensure the stability of the relative position between the flow hole and the purification cavity, and ensure smooth water circulation, meanwhile, the four-corner limiting enhances the structural strength of the moving plate, avoids deformation caused by long-term movement, and prolongs the service life of the terminal purification structure.

[0026] A use method of a city healthy direct drinking water deep purification device, comprising the following steps:

[0027] S1. The raw water is connected to the multiple membrane separation structure, the raw water is preliminarily purified by the primary purification mechanism, and the mud, rust, colloid and large particle microorganisms are intercepted, and the residual chlorine and organic matter are adsorbed; during the period, the displacement assembly makes the filter core vibrate to reduce the attachment of pollutants on the surface of the filter core;

[0028] S2. The water after the primary purification enters the second membrane shell, first passes through the hollow fiber nanofiltration membrane to intercept part of heavy metals, bacteria and medium molecular weight organic matter, and then enters the reverse osmosis membrane through the shell to deeply remove the remaining soluble salts and microorganisms;

[0029] S3. The water separated by the membrane enters the terminal purification structure, the terminal purification structure can make the water flow circulate in it and fully contact with the activated carbon loaded nano TiO2 composite module, can adsorb and degrade organic matter, and the omnidirectional irradiation of the annular distributed ultraviolet lamp tube on the water flow can inactivate microorganisms;

[0030] S4. The water after the terminal purification reaches the direct drinking water standard, is transported to the water supply system through the water outlet of the terminal purification cavity, and the deep purification process is completed.

[0031] (Three) beneficial effects

[0032] Compared with the prior art, the application provides a city healthy direct drinking water deep purification device and use method, which has the following beneficial effects:

[0033] The city health direct drinking water deep purification device and use method, through the multiple membrane separation structure and the terminal purification structure, the multiple membrane separation structure is integrated by the primary purification mechanism, the hollow fiber nanofiltration membrane and the reverse osmosis membrane, the water flow path is shortened, and the damage of water quality fluctuation to the membrane assembly caused by traditional independent setting is avoided, and the terminal purification structure realizes water flow dynamic circulation through the reciprocating movement of the moving plate, cooperates with the composite adsorption material and the annular ultraviolet irradiation, solves the problem that the water flow and the adsorption material are not sufficient in static treatment, and the ultraviolet irradiation dead angle exists, through the cooperation of the multiple membrane separation structure and the terminal purification structure, the complete system of efficient pretreatment, membrane separation and dynamic terminal deep purification is formed, the stability and service life of the membrane assembly are improved, the complete removal of residual organic matter and microorganisms in the terminal effluent is ensured, and the safety and purification efficiency of the city direct drinking water are improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure in the application;

[0035] Figure 2 It is a schematic diagram of the multiple membrane separation structure in the application;

[0036] Figure 3 It is a schematic diagram of the primary purification mechanism structure in the application;

[0037] Figure 4 It is a schematic diagram of the displacement assembly structure in the application;

[0038] Figure 5 It is a schematic diagram of the shell structure in the application;

[0039] Figure 6 It is a schematic diagram of the terminal purification structure in the application;

[0040] Figure 7 It is a schematic diagram of the moving plate structure in the application;

[0041] Figure 8 It is a flowchart of the use method of the city health direct drinking water deep purification device in the application.

[0042] In the figure: 1, device frame; 2, multiple membrane separation structure; 21, first membrane shell; 22, primary purification mechanism; 221, fixed end cover; 222, movable end cover; 223, elastic support net; 224, coarse filter PP cotton; 225, modified activated carbon fiber; 226, ultrafiltration membrane; 227, displacement assembly; 227a, connecting cover; 227b, flexible connecting block; 227c, magnetic rod; 227d, connecting piece; 227e, bracket; 227f, connecting piece; 227g, return spring; 227h, electromagnet; 23, second membrane shell; 24, hollow fiber nanofiltration membrane; 25, reverse osmosis membrane; 3, terminal purification structure; 31, purification cavity; 32, moving plate; 33, ultraviolet lamp tube; 34, activated carbon loaded nano TiO2 composite module; 35, quartz tube; 36, overflow hole; 37, turbulence protrusion; 4, sealing cover; 5, positioning ring; 6, support rod; 7, annular clamping groove; 8, residue discharge groove; 9, residue discharge channel; 10, shell; 11, support ring; 12, limiting cylinder; 13, moving rod; 14, plugging block; 15, fixed ring; 16, pre-tightening spring; 17, support plate; 18, connecting plate; 19, rotating disc; 20, connecting rod; 21, limiting slide column. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] Embodiment 1

[0045] Please refer to Figures 1-5 A kind of urban health direct drinking water deep purification device, including device frame 1, the inner portion of device frame 1 is respectively connected with multiple membrane separation structure 2 and terminal purification structure 3, multiple membrane separation structure 2 includes first membrane shell 21, first membrane shell 21 is connected in the top of the inner portion of device frame 1, the inside of first membrane shell 21 is provided with primary purification mechanism 22, the bottom of first membrane shell 21 is communicated with second membrane shell 23, and the inside of second membrane shell 23 is provided with hollow fiber nanofiltration membrane 24 and reverse osmosis membrane 25;

[0046] The primary purification mechanism 22 comprises a fixed end cover 221 and a movable end cover 222, a plurality of elastic support nets 223 are clamped between the fixed end cover 221 and the movable end cover 222, the plurality of elastic support nets 223 are coaxially arranged, a rough filtration PP cotton 224, modified activated carbon fiber 225 and ultrafiltration membrane 226 are arranged between adjacent two elastic support nets 223 respectively, the rough filtration PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226 are sequentially arranged from outside to inside, a displacement assembly 227 is arranged at the top of the movable end cover 222, and the displacement assembly 227 is used in cooperation with the movable end cover 222, by arranging the multiple membrane separation structure 2, after the raw water enters the first membrane shell 21, the rough filtration PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226 of the primary purification mechanism 22 are sequentially used to complete multi-stage pretreatment, and the pretreated water enters the second membrane shell 23, and is sequentially subjected to deep purification through the hollow fiber nanofiltration membrane 24 and the reverse osmosis membrane 25; the purified water enters the terminal purification structure 3 for further treatment, by integrating the primary purification mechanism 22 and the membrane assembly in the equipment frame 1, the water flow path is shortened, the influence of water quality fluctuation on the membrane assembly is reduced, and membrane damage is avoided; the multi-layer filtration design of the primary purification mechanism 22 provides protection for subsequent membrane separation, and prolongs the service life of the membrane assembly; the connection of the terminal purification structure 3 and the membrane separation structure ensures that the water quality meets the direct drinking water standard after multi-stage purification, and solves the problem of incomplete purification caused by the disconnection between membrane separation and terminal treatment of the traditional device.

[0047] The displacement assembly 227 comprises a connecting cover 227a on the top of the movable end cover 222, the bottom of the connecting cover 227a is bolted with a plurality of coaxially arranged flexible connecting blocks 227b, the bottom of the flexible connecting block 227b is respectively bonded with the coarse filter PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226, the inside of the movable end cover 222 penetrates a magnetic rod 227c, the top of the surface of the magnetic rod 227c is sleeved with a connecting piece 227d, the bottom of the connecting piece 227d is bolted with the movable end cover 222, the top of the fixed end cover 221 is bolted with a support 227e, the bottom of the magnetic rod 227c penetrates to the inside of the support 227e, the bottom of the surface of the magnetic rod 227c is sleeved with a connecting sheet 227f and a return spring 227g, the top and the bottom of the return spring 227g are respectively bolted with the connecting disc and the support 227e, the top of the inner wall of the connecting cover 227a is bolted with an electromagnet 227h, and the electromagnet 227h is used in cooperation with the magnetic rod 227c, when the displacement assembly 227 works, the electromagnet 227h generates magnetic force to repel the magnetic rod 227c to move downward, and synchronously drives the movable end cover 222 to move downward, and makes the return spring 227g compressed, because the movement of the movable end cover 222 makes the elastic support net 223 compressed, after the electromagnet 227h is powered off, the return spring 227g resets to push the magnetic rod 227c to move upward, the elasticity of the elastic support net 223 makes the elastic support net 223 vibrate, and because the inside of the elastic support net 223 is welded with a semicircular contact rod, the contact rod can transmit the vibration to the coarse filter PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226, so as to drive the coarse filter PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226 to vibrate synchronously, through the displacement assembly 227 driving the filter core to vibrate, the pollutants adhered to the surface can be shaken off, the blockage is reduced, and the filter core replacement cycle is prolonged; compared with the traditional manual cleaning, the structure realizes the automatic cleaning of the primary purification mechanism 22, and reduces the maintenance cost.

[0048] The top of the surface of the first membrane shell 21 is threadedly sleeved with a sealing cover 4, the top of the connecting cover 227a is provided with a positioning ring 5, the bottom of the positioning ring 5 is annularly welded with a support rod 6, the bottom of the support rod 6 is bolted with the connecting cover 227a, the top of the positioning ring 5 is in close contact with the inner wall of the sealing cover 4, the threaded connection design of the sealing cover 4 not only ensures the sealing property of the first membrane shell 21 to prevent water leakage, but also facilitates the disassembly and replacement of the filter core; and the cooperation of the positioning ring 5 and the support rod 6 facilitates the fixation of the primary purification mechanism 22 in the first membrane shell 21.

[0049] The top of the fixed end cover 221 and the bottom of the movable end cover 222 are both provided with a plurality of annular clamping grooves 7, the elastic supporting net 223, the coarse filtering PP cotton 224, the modified activated carbon fiber 225 and the ultrafiltration membrane 226 are all clamped with the fixed end cover 221 and the movable end cover 222 through the annular clamping grooves 7, the independent disassembly of each layer of filter core is realized through the design of the annular clamping grooves 7, the problem of material waste caused by the traditional integrated filter core is solved, the filter core can be quickly replaced through the clamping structure, the maintenance time is shortened, the flexibility and economy of the device are improved, and the differentiated needs of the filter core for different water qualities are adapted.

[0050] The hollow groove is arranged between the two adjacent annular clamping grooves 7 at the bottom, the inside of the fixed end cover 221 is provided with a deslagging groove 8, the deslagging groove 8 is communicated with the hollow groove, and the bottom of the deslagging groove 8 is communicated with a deslagging channel 9, the deslagging channel 9 is provided for the falling pollutants through the cooperation of the hollow groove and the deslagging groove 8, so that the secondary pollution caused by the accumulation of pollutants in the gap between the filter cores is avoided, and the automatic discharge of the pollutants is realized through the deslagging channel 9, which further improves the self-cleaning ability of the primary purification mechanism 22 in cooperation with the vibration cleaning function of the displacement assembly 227.

[0051] The hollow fiber nanofiltration membrane 24 and the reverse osmosis membrane 25 are communicated with the shell 10, the inside of the shell 10 is welded with a supporting ring 11, the inside of the supporting ring 11 is welded with a limiting cylinder 12, the inside of the limiting cylinder 12 is slidably penetrated by a moving rod 13, the rear side of the moving rod 13 is welded with a blocking block 14, the inside of the blocking block 14 is annularly provided with a plurality of flow guide holes, the surface of the moving rod 13 is sleeved with a fixing ring 15 and a pre-tightening spring 16, the pre-tightening spring 16 is in contact with the moving rod 13 and the limiting cylinder 12 on the side close to the moving rod 13 and the limiting cylinder 12 respectively, the front side of the surface of the moving rod 13 is threadedly sleeved with an adjusting nut, and the rear side of the adjusting nut is in close contact with the fixing ring 15, when the water pressure between the hollow fiber nanofiltration membrane 24 and the reverse osmosis membrane 25 fluctuates, when the water inlet pressure is too high, the pressure overcomes the elastic force of the pre-tightening spring 16, so that the blocking block 14 is close to the flow channel and the flow area is reduced, so as to avoid damage to the membrane assembly caused by high pressure, when the pressure is too low, the pre-tightening spring 16 is used to make the blocking block 14 move forward to increase the flow, so as to ensure the purification efficiency, and the tightness of the pre-tightening spring 16 can be adjusted by rotating the adjusting nut, so as to adapt to different water pressure scenes, and the setting of the flow guide hole can ensure that the water flow stably passes through the shell 10 and enters the reverse osmosis membrane 25, so that the pressure self-adaptive adjusting structure is formed by the cooperation of the moving rod 13, the blocking block 14 and the pre-tightening spring 16, which can buffer the impact of water quality fluctuation on the membrane assembly, avoid damage to the membrane, and solve the problem that the traditional independent membrane is easily affected by water pressure fluctuation.

[0052] The working principle of the embodiment is as follows: raw water enters the first membrane shell 21 through a pipeline, and flows through the multi-layer filter assembly of the primary purification mechanism 22 in sequence: the outer layer of the coarse filter PP cotton 224 intercepts large-particle impurities such as silt and rust in the water; the middle layer of the modified activated carbon fiber 225 adsorbs residual chlorine, organic matter and odor substances; the inner layer of the ultrafiltration membrane 226 intercepts colloids, large-size microorganisms and the like, to complete pretreatment. In this process, the displacement assembly 227 works synchronously: the electromagnetic iron 227h generates magnetic force to repel the magnetic rod 227c when powered on, drives the movable end cover 222 to move downward, and compresses the elastic support net 223 and the reset spring 227g; after the electromagnetic iron 227h is powered off, the reset spring 227g resets to push the magnetic rod 227c to move upward, the elastic support net 223 rebounds to generate vibration, the vibration is transmitted to each layer of filter core through the semicircular contact rod, and the surface-attached pollutants are shaken off, while the fallen pollutants enter the deslagging groove 8 through the hollow groove, and are finally discharged through the deslagging channel 9 to avoid filter core blockage; the water purified through the primary purification enters the second membrane shell 23 through the pipeline at the bottom of the first membrane shell 21: first, the water flows through the hollow fiber nanofiltration membrane 24 to intercept part of heavy metal ions, bacteria, viruses and medium-molecular-weight organic matter, and retain beneficial mineral matter; the water treated by nanofiltration enters the shell 10, and if the water pressure fluctuates, the high pressure will push the blocking block 14 to compress the pre-tightening spring 16 to reduce the flow area to protect the membrane assembly; when the pressure is too low, the pre-tightening spring 16 resets to push the blocking block 14 to increase the flow area to ensure stable flow, and finally the water flow enters the reverse osmosis membrane 25 uniformly through the flow guide hole of the blocking block 14 to deeply remove the remaining soluble salt, small-molecule pollutants and microorganisms, and complete deep purification.

[0053] Example 2

[0054] Reference Figure 6 and 7The urban healthy direct drinking water deep purification device further comprises a terminal purification structure 3, wherein the terminal purification structure comprises a purification cavity 31, the purification cavity 31 is communicated with the second membrane shell 23 through a pipeline, a moving plate 32 is slidably arranged in the purification cavity 31, and an ultraviolet lamp tube 33 and an activated carbon loaded nano TiO2 composite module 34 are respectively penetrated into the moving plate 32, quartz tubes 35 are sleeved on surfaces of the activated carbon loaded nano TiO2 composite module 34 and the ultraviolet lamp tube 33, the inside of the middle quartz tube 35 is of a porous structure, the ultraviolet lamp tube 33 is annularly distributed on the outside of the activated carbon loaded nano TiO2 composite module 34, a plurality of overflow holes 36 are formed in the moving plate 32, and turbulence protrusions 37 that are integral with the overflow holes 36 are annularly arranged in the overflow holes 36. Through the terminal purification structure, when terminal purification is performed, the moving plate 32 reciprocally slides in the purification cavity 31, the water flow circulates in the two spaces through the overflow holes 36, the turbulence protrusions 37 make the water flow generate vortex, the activated carbon loaded nano TiO2 composite module 34 adsorbs and degrades organic matters, and the annularly distributed ultraviolet lamp tube 33 irradiates the water flow through the quartz tubes 35 in all directions to inactivate microorganisms. Through the design of the moving plate 32 and the overflow holes 36, the water flow forms dynamic circulation, the problem of insufficient contact in static adsorption is solved, the turbulence protrusions 37 enhance the disturbance of the water flow, the action efficiency with the composite adsorption material is improved, the cooperation of the annular ultraviolet lamp tube 33 and the quartz tube 35 eliminates the irradiation dead angle, microorganisms are completely inactivated, and the terminal purification effect and the water outlet safety are improved.

[0055] The inside of the purification cavity 31 is provided with two support plates 17 that are bolted on the top, a connecting plate 18 is slidably arranged between the top of the two support plates 17, the bottom of the connecting plate 18 is bolted to the moving plate 32, a rotating disc 19 is rotatably connected between the front sides of the top of the two support plates 17, and a connecting rod 20 is rotatably connected to the top of the rotating disc 19 and the bottom of the connecting plate 18. A waterproof motor is installed below the two support plates 17, the rotating disc 19 is driven to rotate by the waterproof motor, the rotating disc 19 drives the connecting rod 20 to push and pull the connecting plate 18, the connecting plate 18 slides along the support plate 17, and the moving plate 32 reciprocally moves in the purification cavity 31. The linkage structure of the rotating disc 19 and the connecting rod 20 provides stable reciprocating driving force for the moving plate 32, ensures uniform water flow circulation, enhances the stability of dynamic purification, makes the water flow fully contact with the adsorption material and ultraviolet rays, and improves the purification efficiency.

[0056] The four corners of the moving plate 32 are penetrated by the limiting slide columns 21, and the two ends of the limiting slide columns 21 are bolted with the inner wall of the purification cavity 31, so that the moving plate 32 is accurately guided by the limiting slide columns 21, the deviation or inclination of the moving plate 32 in the movement process is prevented, the relative position between the overflow hole 36 and the purification cavity 31 is stable, the water flow circulation is smooth, meanwhile, the four-corner limiting enhances the structural strength of the moving plate 32, the deformation caused by long-term movement is avoided, and the service life of the terminal purification structure 3 is prolonged.

[0057] The working principle of the embodiment is as follows: the water separated by the membrane is introduced into the purification cavity 31 through the pipeline, the waterproof motor drives the rotating disc 19 to rotate, the rotating disc 19 drives the connecting plate 18 to slide along the branch plate 17 through the connecting rod 20, and the moving plate 32 is driven to reciprocate in the purification cavity 31 along the limiting slide column 21; when the moving plate 32 moves, the water in the two spaces separated by the cavity flows back and forth through the overflow hole 36, the turbulence protrusion 37 in the overflow hole 36 causes the water flow to generate vortex, the contact efficiency with the purification assembly on the moving plate 32 is enhanced, the active carbon loaded nano TiO2 composite module 34 is in full contact with the water flow through the hole-shaped structure quartz tube 35, and the residual organic matter and peculiar smell substances in the water are adsorbed, meanwhile, the hydroxyl radical is generated under the ultraviolet irradiation, and the small molecule pollutants difficult to be adsorbed are degraded; the annularly distributed ultraviolet lamp 33 irradiates the water flow in all directions through the quartz tube 35, and the bacteria, viruses and other microorganisms in the water are inactivated without dead angle, so that the terminal sterilization is complete; the water after dynamic circulation adsorption, photocatalytic degradation and ultraviolet sterilization reaches the direct drinking water standard, and is conveyed to the urban direct drinking water supply system through the water outlet of the purification cavity 31.

[0058] Reference Figure 8 The application also provides a use method of the urban healthy direct drinking water deep purification device, which comprises the following steps:

[0059] S1. The raw water is introduced into the multiple membrane separation structure 2, the raw water is preliminarily purified through the primary purification mechanism 22, and the silt, rust, colloid and large particle microorganisms are intercepted, and the residual chlorine and organic matter are adsorbed; during the period, the displacement assembly 227 vibrates the filter core, and the attachment of the pollutants on the surface of the filter core is reduced;

[0060] S2. The water after the primary purification is introduced into the second membrane shell 23, part of the heavy metals, bacteria and medium molecular weight organic matter are intercepted through the hollow fiber nanofiltration membrane 24, and then the water is introduced into the reverse osmosis membrane 25 through the shell 10, and the residual soluble salt and microorganism are deeply removed.

[0061] S3. The water separated by the membrane is introduced into the terminal purification structure 3, the water flow can circulate in the terminal purification structure 3, and the water flow can be in full contact with the active carbon loaded nano TiO2 composite module 34, so that the organic matter can be adsorbed and degraded, and the annularly distributed ultraviolet lamp 33 can irradiate the water flow in all directions, so that the microorganisms can be inactivated.

[0062] S4. After the terminal-purified water reaches the direct drinking water standard, the terminal-purified water is transported to the water supply system through the water outlet of the terminal purification cavity 31, and the deep purification process is completed.

[0063] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments according to the needs after reading the specification, and the modifications do not contribute to the creativity. Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of urban health direct drinking water deep purification device, including equipment frame (1), it is characterized in that: The inner part of the equipment frame (1) is respectively bolted with a multiple membrane separation structure (2) and a terminal purification structure (3), the multiple membrane separation structure (2) comprises a first membrane shell (21), the first membrane shell (21) is bolted at the top of the inner part of the equipment frame (1), the inside of the first membrane shell (21) is provided with a primary purification mechanism (22), the bottom of the first membrane shell (21) is communicated with a second membrane shell (23), and the inside of the second membrane shell (23) is provided with a hollow fiber nanofiltration membrane (24) and a reverse osmosis membrane (25); The primary purification mechanism (22) comprises a fixed end cover (221) and a movable end cover (222), a plurality of elastic support nets (223) are clamped between the fixed end cover (221) and the movable end cover (222), the plurality of elastic support nets (223) are coaxially arranged, coarse filter PP cotton (224), modified activated carbon fiber (225) and ultrafiltration membrane (226) are arranged between adjacent two elastic support nets (223) respectively, the coarse filter PP cotton (224), the modified activated carbon fiber (225) and the ultrafiltration membrane (226) are sequentially arranged from outside to inside, and the top of the movable end cover (222) is provided with a displacement assembly (227), and the displacement assembly (227) is used in cooperation with the movable end cover (222).

2. The urban healthy direct drinking water deep purification device according to claim 1, characterized in that: The displacement assembly (227) comprises a connecting cover (227a), the connecting cover (227a) is located at the top of the movable end cover (222), a plurality of coaxially arranged flexible connecting blocks (227b) are bolted at the bottom of the connecting cover (227a), and the bottom of the flexible connecting block (227b) is respectively bonded with the coarse filter PP cotton (224), the modified activated carbon fiber (225) and the ultrafiltration membrane (226), a magnetic rod (227c) penetrates through the inside of the movable end cover (222), a connecting piece (227d) is sleeved on the top of the surface of the magnetic rod (227c), the bottom of the connecting piece (227d) is bolted with the movable end cover (222), a support (227e) is bolted at the top of the fixed end cover (221), the bottom of the magnetic rod (227c) penetrates into the inside of the support (227e), a connecting plate (227f) and a reset spring (227g) are sleeved on the bottom of the surface of the magnetic rod (227c), and the top and bottom of the reset spring (227g) are respectively bolted with the support (227e), an electromagnet (227h) is bolted at the top of the inner wall of the connecting cover (227a), and the electromagnet (227h) is used in cooperation with the magnetic rod (227c).

3. The urban healthy direct drinking water deep purification device according to claim 2, characterized in that: The top of the surface of the first membrane shell (21) is threadedly sleeved with a sealing cover (4), the top of the connecting cover (227a) is provided with a positioning ring (5), the bottom of the positioning ring (5) is annularly welded with a support rod (6), the bottom of the support rod (6) is bolted with the connecting cover (227a), and the top of the positioning ring (5) is in close contact with the inner wall of the sealing cover (4).

4. The urban healthy direct drinking water deep purification device according to claim 1, characterized in that: The top of the fixed end cover (221) and the bottom of the movable end cover (222) are both provided with a plurality of annular clamping grooves (7), the elastic supporting net (223), the coarse filtering PP cotton (224), the modified activated carbon fiber (225) and the ultrafiltration membrane (226) are clamped with the fixed end cover (221) and the movable end cover (222) through the annular clamping grooves (7) respectively.

5. The urban healthy direct drinking water deep purification device according to claim 1, characterized in that: The bottom of the fixed end cover (221) and the bottom of the movable end cover (222) are both provided with a plurality of annular clamping grooves (7), the elastic supporting net (223), the coarse filtering PP cotton (224), the modified activated carbon fiber (225) and the ultrafiltration membrane (226) are clamped with the fixed end cover (221) and the movable end cover (222) through the annular clamping grooves (7) respectively.

6. The urban healthy direct drinking water deep purification device according to claim 1, characterized in that: The hollow fiber nanofiltration membrane (24) and the reverse osmosis membrane (25) are communicated with the shell (10), and the shell (10) is welded with a supporting ring (11) in the inside, the supporting ring (11) is welded with a limiting cylinder (12) in the inside, the limiting cylinder (12) is slidably penetrated by a moving rod (13) in the inside, the rear side of the moving rod (13) is welded with a blocking block (14), and a plurality of flow guide holes are annularly formed in the inside of the blocking block (14), the surface of the moving rod (13) is sleeved with a fixed ring (15) and a pre-tightening spring (16), the pre-tightening spring (16) is in contact with the moving rod (13) and the limiting cylinder (12) on one side respectively, and an adjusting nut is threadedly sleeved on the front side of the surface of the moving rod (13), and the rear side of the adjusting nut is in close contact with the fixed ring (15).

7. The urban healthy direct drinking water deep purification device according to claim 1, characterized in that: The terminal purification mechanism comprises a purification cavity (31), the purification cavity (31) is communicated with the second membrane shell (23) through a pipeline, a moving plate (32) is slidably arranged in the inside of the purification cavity (31), and an ultraviolet lamp tube (33) and an activated carbon loaded nano TiO2 composite module (34) are respectively penetrated in the inside of the moving plate (32), the surface of the activated carbon loaded nano TiO2 composite module (34) and the ultraviolet lamp tube (33) is sleeved with a quartz tube (35), the inside of the middle quartz tube (35) is in a porous structure, the ultraviolet lamp tube (33) is annularly distributed on the outside of the activated carbon loaded nano TiO2 composite module (34), a plurality of overflow holes (36) are formed in the inside of the moving plate (32), and a turbulence protrusion (37) which is integrated with the overflow hole (36) is annularly arranged in the inside of the overflow hole (36).

8. The urban healthy direct drinking water deep purification device according to claim 7, characterized in that: Two supporting plates (17) are bolted on the top of the inside of the purification cavity (31), a connecting plate (18) is slidably arranged between the top of the two supporting plates (17), the bottom of the connecting plate (18) is bolted with the moving plate (32), a rotating disc (19) is rotatably connected between the front sides of the top of the two supporting plates (17), and a connecting rod (20) is rotatably connected with the top of the rotating disc (19).

9. The urban healthy direct drinking water deep purification device according to claim 7, characterized in that: Limiting sliding columns (21) are penetrated in the four corners of the inside of the moving plate (32), and the two ends of the limiting sliding columns (21) are bolted with the inner wall of the purification cavity (31).

10. The use of a device for the advanced purification of urban healthy direct drinking water according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1. The raw water is connected to the multiple membrane separation structure (2), and the raw water is preliminarily purified by the primary purification mechanism (22) to intercept silt, rust, colloid and large-particle microorganisms, and to adsorb residual chlorine and organic matter; during the process, the displacement assembly (227) vibrates the filter core to reduce the adhesion of pollutants on the surface of the filter core; S2. The water after the primary purification enters the second membrane shell (23), passes through the hollow fiber nanofiltration membrane (24) to intercept part of heavy metals, bacteria and medium-molecular-weight organic matter, and then enters the reverse osmosis membrane (25) through the shell (10) to deeply remove the remaining soluble salts and microorganisms; S3. The water after the membrane separation enters the terminal purification structure (3), the terminal purification structure (3) can make the water flow circulate in the terminal purification structure (3) and fully contact with the active carbon loaded nano-TiO2 composite module, so that the organic matter can be adsorbed and degraded, and meanwhile, the omnibearing irradiation of the annular distributed ultraviolet lamp (33) on the water flow can inactivate the microorganisms; S4. After the water after the terminal purification reaches the direct drinking water standard, the water is delivered to the water supply system through the water outlet of the terminal purification cavity (31), and the deep purification process is completed.

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