Direct water dispenser

Abstract

The utility model discloses a direct drinking water machine, which belongs to the technical field of direct drinking water and is characterized in that raw water is stored in a raw water tank skid-mounted component and then enters a nanofiltration skid-mounted component for raw water conveying, raw water sand carbon filtration and RO (reverse osmosis) membrane filtration and then is conveyed to a sterile water tank skid-mounted component; removing bacteria and viruses from the water filtered by the RO membrane to obtain direct drinking water, and conveying the direct drinking water to a water supply pump group assembly; the water supply pump set assembly conveys the direct drinking water to a floor direct drinking water point. During installation, only the raw water tank skid-mounted assembly, the nanofiltration skid-mounted assembly, the sterile water tank skid-mounted assembly and the water supply pump set assembly need to be directly installed in the tank body; the device has the advantages of small occupied area, convenience in installation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of direct drinking water, and in particular relates to a direct drinking water machine. Background Art

[0002] Municipal units, schools, hospitals, office buildings, military camps, hotels, villas, airports and other places generally need to provide purified drinking water to meet people's daily needs. The traditional water supply process has a single sterilization method, which is not thorough and difficult to meet the direct drinking standard. Existing purified water is generally supplied by a single machine or one machine for multiple supplies, which is difficult to meet the demand for centralized and large-scale supply of direct drinking water. The existing direct drinking water system does not have the function of pipeline circulation sterilization and disinfection. When part of the water supply network or the water terminal has not used water for a long time, there will be dead water in the network, which is easy to cause secondary bacterial growth. In addition, the existing direct drinking water has poor taste.

[0003] The Chinese patent with publication number CN103351077A and publication date 2013-10-16 discloses a multifunctional full-effect direct drinking water system, including an electric control device, and a raw water tank, a raw water pump, a multi-media filter, an activated carbon filter, a water softener and a dosing device, a drug washing device, a security filter, a high-pressure pump, a reverse osmosis device including several RO membranes, a pure water tank, an ultraviolet sterilization device, a variable frequency water supply pump, a post-fine filter, a post-regulator, and a pipe network water end to form a direct drinking water production pipeline, an ozone mixer and an ozone generator connected thereto are provided on the pipeline between the reverse osmosis device and the pure water tank, and the pipe network water end is connected to the pure water tank through a return water filter device to form a return water circulation sterilization and disinfection pipeline. This patent has the disadvantages of large land occupation and inconvenient installation. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a direct drinking water machine, in which raw water is stored in a raw water tank skid assembly, and then enters a nanofiltration skid assembly for raw water transportation, raw water sand carbon filtration and RO membrane filtration, and then is transported to a sterile water tank skid assembly; the water after RO membrane filtration is filtered to remove bacteria and viruses to obtain direct drinking water, and the direct drinking water is transported to a water supply pump assembly; the water supply pump assembly transports the direct drinking water to the direct drinking water points on the floor. When installing the utility model, it is only necessary to directly install the raw water tank skid assembly, the nanofiltration skid assembly, the sterile water tank skid assembly and the water supply pump assembly in the box; the utility model has the advantages of small footprint and easy installation.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The direct drinking water machine comprises a box body, in which a raw water tank skid-mounted assembly, a nanofiltration skid-mounted assembly, a sterile water tank skid-mounted assembly and a water supply pump assembly are arranged; the raw water tank skid-mounted assembly is used for storing raw water and then conveying it to the nanofiltration skid-mounted assembly; the nanofiltration skid-mounted assembly is used for conveying raw water, filtering the raw water with sand and carbon and filtering it with an RO membrane, and then conveying it to the sterile water tank skid-mounted assembly; the sterile water tank skid-mounted assembly is used for removing bacteria and viruses from the water after RO membrane filtration to obtain direct drinking water, and conveying the direct drinking water to the water supply pump assembly; the water supply pump assembly is used for conveying the direct drinking water to the direct drinking water points on the floors.

[0007] Preferably, the raw water tank skid-mounted assembly includes a raw water tank and a raw water tank skid-mounted base, one end of the raw water tank is connected to a tap water pipe, the other end of the raw water tank is connected to the nanofiltration skid-mounted assembly, and the raw water tank is arranged on the raw water tank skid-mounted base.

[0008] Preferably, the nanofiltration skid-mounted assembly includes a raw water pump, a sand carbon filter, a high-pressure pump, an RO membrane system and a nanofiltration skid-mounted base, and the raw water pump, sand carbon filter, high-pressure pump and RO membrane system are arranged on the nanofiltration skid-mounted base, and the raw water pump, sand carbon filter, high-pressure pump and RO membrane system are connected in sequence through pipelines.

[0009] Preferably, a security filter is also provided on the nanofiltration skid-mounted base.

[0010] Preferably, the sterile water tank skid-mounted assembly includes an invasive ultraviolet sterilizer, a water supply ultraviolet sterilizer and a sterile water tank skid-mounted base, the invasive ultraviolet sterilizer and the water supply ultraviolet sterilizer are connected in sequence, the invasive ultraviolet sterilizer is arranged on the sterile water tank skid-mounted base, and the water supply ultraviolet sterilizer is arranged on the invasive ultraviolet sterilizer.

[0011] Preferably, two invasive ultraviolet sterilizers are provided.

[0012] Preferably, the water supply pump assembly includes a water supply pump and a water supply pump base, the water supply pump is arranged on the water supply pump base, the water supply pump input end is connected to the water supply ultraviolet sterilizer output end, and the water supply pump output end is connected to the direct drinking water point on the floor.

[0013] Preferably, two water supply pumps are provided.

[0014] Preferably, a pressure stabilizing tank is also provided on the water supply pump base.

[0015] Preferably, a water supply filter is also provided on the water supply pump base.

[0016] The beneficial effects of this technical solution are as follows:

[0017] 1. The direct drinking water machine provided by the utility model stores raw water in the raw water tank skid-mounted assembly, and then enters the nanofiltration skid-mounted assembly for raw water transportation, raw water sand carbon filtration and RO membrane filtration, and then is transported to the sterile water tank skid-mounted assembly; the water after RO membrane filtration removes bacteria and viruses to obtain direct drinking water, and the direct drinking water is transported to the water supply pump assembly; the water supply pump assembly transports the direct drinking water to the direct drinking water points on the floors. When installing the utility model, it is only necessary to directly install the raw water tank skid-mounted assembly, the nanofiltration skid-mounted assembly, the sterile water tank skid-mounted assembly and the water supply pump assembly in the box; the utility model has the advantages of small footprint and easy installation.

[0018] 2. The direct drinking water machine provided by the utility model has the raw water tank, pipelines, and valves, pressure gauges, and flow meters installed in the raw water tank skid-mounted assembly directly installed on the raw water tank skid-mounted base when leaving the factory. It is modularly shipped from the factory, and during installation, you only need to install the raw water tank skid-mounted assembly on the box body.

[0019] 3. The direct drinking water machine provided by the utility model has the raw water pump, sand-carbon filter, high-pressure pump, RO membrane system, pipelines, and valves, pressure gauges, and flow meters installed in the nanofiltration skid-mounted assembly directly installed on the nanofiltration skid-mounted base when leaving the factory. It is modularized and only requires the nanofiltration skid-mounted assembly to be installed on the box during installation.

[0020] 4. The direct drinking water machine provided by the utility model has the invasive ultraviolet sterilizer, water supply ultraviolet sterilizer, pipelines, and valves, pressure gauges, and flow meters in the sterile water tank skid-mounted assembly directly installed on the sterile water tank skid-mounted base when leaving the factory. It is modularized and only requires the sterile water tank skid-mounted assembly to be installed on the box body during installation.

[0021] 5. The direct drinking water machine provided by the utility model has the water supply pump assembly including the water supply pump, pipeline, and valves, pressure gauge and flow meter installed in the pipeline directly installed on the water supply pump base when leaving the factory. It is modularized and only needs to install the water supply pump assembly on the box during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the Zhongyuan water tank skid-mounted assembly of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the nanofiltration skid-mounted assembly in the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the skid-mounted assembly of the sterile water tank in the utility model;

[0026] Figure 5It is a structural schematic diagram of the water supply pump assembly in the utility model;

[0027] Figure 6 This is a process flow chart of the utility model;

[0028] Among them: 1000, box body; 1100, raw water tank skid assembly; 1110, raw water tank skid base; 1200, nanofiltration skid assembly; 1210, nanofiltration skid base; 1300, sterile water tank skid assembly; 1310, sterile water tank skid base; 1400, water supply pump assembly; 1410, water supply pump base; 1, raw water tank; 2, sand carbon filter; 3, RO membrane system; 4, invasive ultraviolet sterilizer; 5, water supply ultraviolet sterilizer; 6 , water supply filter; 7, raw water pump; 8, high pressure pump; 9, water supply pump; 10, scale inhibitor adding device; 11, security filter; 12, pressure stabilizing tank; 110, tap water pipe; 120, second water pipe; 130, third water pipe; 140, fourth water pipe; 150, fifth water pipe; 160, sixth water pipe; 170, seventh water pipe; 180, main return pipe; 181, first return branch pipe; 182, second return branch pipe; 190, concentrated water discharge pipe; 20 0, raw water return pipe; 210, unqualified water pipe; 310, first pressure gauge; 320, second pressure gauge; 330, third pressure gauge; 340, fourth pressure gauge; 350, fifth pressure gauge; 360, sixth pressure gauge; 370, seventh pressure gauge; 380, return water pressure gauge; 390, RO concentrated water pressure gauge; 410, first automatic valve; 420, second automatic valve; 430, third automatic valve; 440, RO concentrated water automatic valve; 450, first Return water automatic valve; 460, second return water automatic valve; 470, raw water return automatic valve; 480, unqualified return water automatic valve; 510, first flow meter; 520, second flow meter; 530, third flow meter; 540, RO concentrated water flow meter; 550, return water flow meter; 610, return water conductivity meter; 620, first conductivity meter; 630, second conductivity meter; 640, third conductivity meter; 710, first liquid level sensor; 720, second liquid level sensor. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0030] Example 1

[0031] like Figure 1As shown, the direct drinking water machine includes a box body 1000, in which a raw water tank skid-mounted assembly 1100, a nanofiltration skid-mounted assembly 1200, a sterile water tank skid-mounted assembly 1300 and a water supply pump assembly 1400 are arranged; the raw water tank skid-mounted assembly 1100 is used for storing raw water and then transporting it to the nanofiltration skid-mounted assembly 1200; the nanofiltration skid-mounted assembly 1200 is used for transporting raw water, filtering the raw water through sand and carbon and filtering it through an RO membrane, and then transporting it to the sterile water tank skid-mounted assembly 1300; the sterile water tank skid-mounted assembly 1300 is used for removing bacteria and viruses from the water after RO membrane filtration to obtain direct drinking water, and transporting the direct drinking water to the water supply pump assembly 1400; the water supply pump assembly 1400 is used for transporting direct drinking water to direct drinking water points on each floor.

[0032] The raw water is stored in the raw water tank skid assembly 1100, and then enters the nanofiltration skid assembly 1200 for raw water transportation, raw water sand carbon filtration and RO membrane filtration, and then transported to the sterile water tank skid assembly 1300; the water after RO membrane filtration removes bacteria and viruses to obtain direct drinking water, and the direct drinking water is transported to the water supply pump assembly 1400; the water supply pump assembly 1400 transports the direct drinking water to the direct drinking water points on the floors. When installing the utility model, it is only necessary to directly install the raw water tank skid assembly 1100, the nanofiltration skid assembly 1200, the sterile water tank skid assembly 1300 and the water supply pump assembly 1400 in the box body 1000; the utility model has the advantages of small footprint and easy installation.

[0033] Example 2

[0034] The difference between this embodiment and embodiment 1 is that Figure 2 As shown, the raw water tank skid-mounted assembly 1100 includes a raw water tank 1 and a raw water tank skid-mounted base 1110. One end of the raw water tank 1 is connected to a tap water pipe, and the other end of the raw water tank 1 is connected to a nanofiltration skid-mounted assembly 1200. The raw water tank 1 is disposed on the raw water tank skid-mounted base 1110.

[0035] like Figure 3 As shown, the nanofiltration skid assembly 1200 includes a raw water pump 7, a sand carbon filter 2, a high pressure pump 8, an RO membrane system 3 and a nanofiltration skid base 1210, wherein the raw water pump 7, the sand carbon filter 2, the high pressure pump 8 and the RO membrane system 3 are arranged on the nanofiltration skid base 1210, and the raw water pump 7, the sand carbon filter 2, the high pressure pump 8 and the RO membrane system 3 are sequentially connected through pipelines. The input end of the raw water pump 7 is connected to the raw water tank 1, and the output end of the RO membrane system 3 is connected to the sterile water tank skid assembly 1300.

[0036] A safety filter 11 is also provided on the nanofiltration skid-mounted base 1210. The safety filter 11 is provided on a pipeline at the rear end of the sand-carbon filter 2.

[0037] like Figure 4 As shown, the sterile water tank skid assembly 1300 includes an invasive ultraviolet sterilizer 4, a water supply ultraviolet sterilizer 5 and a sterile water tank skid base 1310, the invasive ultraviolet sterilizer 4 and the water supply ultraviolet sterilizer 5 are connected in sequence, the invasive ultraviolet sterilizer 4 is arranged on the sterile water tank skid base 1310, and the water supply ultraviolet sterilizer 5 is arranged on the invasive ultraviolet sterilizer 4. One end of the invasive ultraviolet sterilizer 4 is connected to the output end of the RO membrane system 3, and the output end of the water supply ultraviolet sterilizer 5 is connected to the water supply pump assembly 1400.

[0038] There are two invasive ultraviolet sterilizers 4, one for backup and one for use.

[0039] like Figure 5 As shown, the water supply pump assembly 1400 includes a water supply pump 9 and a water supply pump base 1410, the water supply pump 9 is arranged on the water supply pump base 1410, the input end of the water supply pump 9 is connected to the output end of the water supply ultraviolet sterilizer 5, and the output end of the water supply pump 9 is connected to the direct drinking water point on the floor.

[0040] There are two water supply pumps 9, one for backup and one for use.

[0041] Wherein, a pressure stabilizing tank 12 is also provided on the water supply pump base 1410 .

[0042] Wherein, a water supply filter 6 is also provided on the water supply pump base 1410 .

[0043] The raw water tank 1, pipelines, and valves, pressure gauges, and flow meters installed in the raw water tank skid-mounted assembly 1100 are directly installed on the raw water tank skid-mounted base 1110 when leaving the factory. It is modularized when leaving the factory. During installation, you only need to install the raw water tank skid-mounted assembly 1100 on the box body 1000; the raw water pump 7, sand carbon filter 2, high-pressure pump 8, RO membrane system 3, pipelines, and valves, pressure gauges, and flow meters installed in the nanofiltration skid-mounted assembly 1200 are directly installed on the nanofiltration skid-mounted base 1210 when leaving the factory. It is modularized when leaving the factory. During installation, you only need to install the nanofiltration skid-mounted assembly 1200 on the box body 1000 ; When leaving the factory, the invasive ultraviolet sterilizer 4, the water supply ultraviolet sterilizer 5, the pipelines, and the valves, pressure gauges and flow meters installed in the sterile water tank skid-mounted assembly 1300 are directly installed on the sterile water tank skid-mounted base 1310. It is shipped in a modular manner. During installation, you only need to install the sterile water tank skid-mounted assembly 1300 on the box body 1000; When leaving the factory, the water supply pump assembly 1400 including the water supply pump 9, the pipelines, and the valves, pressure gauges and flow meters installed in the pipeline are directly installed on the water supply pump base 1410. It is shipped in a modular manner. During installation, you only need to install the water supply pump assembly 1400 on the box body 1000.

[0044] Example 3

[0045] like Figure 6 As shown, the direct drinking water machine includes a raw water tank 1, a sand carbon filter 2, an RO membrane system 3, an invasive ultraviolet sterilizer 4, a water supply ultraviolet sterilizer 5, a water supply filter 6 and a PLC controller, the raw water tank 1 is connected to a tap water pipe 110 and a second water pipe 120, the tap water pipe 110 is provided with a first pressure gauge 310 and a first automatic valve 410, the second water pipe 120 is provided with a raw water pump 7, a first flow meter 510 and a second pressure gauge 320, the sand carbon filter 2 is connected to a third water pipe 130, the third water pipe 130 is provided with a third pressure gauge 330, a second automatic valve 420, a high-pressure pump 8 and a fourth pressure gauge 340, the RO membrane system 3 is connected to a fourth water pipe 140, the fourth water pipe 140 is provided with a second flow meter 520 and a third automatic valve 430, the invasive ultraviolet sterilizer 4 is connected to a tap water pipe 110 and a second water pipe 120, The water supply ultraviolet sterilizer 5 is connected to the water supply filter 6 through the fifth water pipe 150, and the water supply ultraviolet sterilizer 5 is connected to the water supply filter 6 through the sixth water pipe 160. The sixth water pipe 160 is provided with a water supply pump 9 and a fifth pressure gauge 350. The water supply filter 6 is connected to the direct drinking water point on the floor through the seventh water pipe 170, and the seventh water pipe 170 is provided with a sixth pressure gauge 360 ​​and a third flow meter 530; the PLC controller is connected to the first pressure gauge 310, the first automatic valve 410, the raw water pump 7, the low pressure protector, the first flow meter 510, the second pressure gauge 320, the third pressure gauge 330, the second automatic valve 420, the high pressure pump 8, the fourth pressure gauge 340, the second flow meter 520, the third automatic valve 430, the water supply ultraviolet sterilizer 5, the water supply pump 9, the fifth pressure gauge 350, the sixth pressure gauge 360 ​​and the third flow meter 530.

[0046] The raw water enters the raw water tank 1 through the tap water pipe 110, and the first pressure gauge 310 detects the pressure of the raw water. The raw water flows out of the raw water tank 1 and flows into the sand carbon filter 2 through the raw water pump 7. The sand carbon filter 2 removes large particles of impurities. The first flow meter 510 and the second pressure gauge 320 on the second water pipe 120 detect the flow and pressure of the water in the pipe. The third pressure gauge 330 detects the pressure of the water after the sand carbon filter 2 removes impurities. The second pressure gauge 320 and the third pressure gauge 330 on the third water pipe 130 can be compared to determine whether the sand carbon filter 2 is blocked; the fourth pressure gauge 340 detects the pressure of the water after the high-pressure pump 8 pressurizes the water. The water after the impurities are removed is pressurized and flows into the RO membrane system 3 to remove dissolved salts, colloids, bacteria, viruses, organic matter and other substances harmful to the human body in the water. The water filtered by the RO membrane system 3 flows into the invasive ultraviolet sterilizer 4 through the fourth water pipe 140. The invasive ultraviolet sterilizer 4 removes water. The unfiltered bacteria and viruses are removed from the water, and the second flowmeter 520 on the fourth water pipe 140 detects the water flow in the pipe; the water after the primary sterilization flows into the water supply ultraviolet sterilizer 5 through the fifth water pipe 150 for secondary sterilization, and the water after the secondary sterilization flows into the water supply filter 6 through the sixth water pipe 160 and the water supply pump 9 for further impurity removal, and the fifth pressure gauge 350 on the sixth water pipe 160 detects the pressure of the water after the water supply pump 9 is pressurized; the water filtered by the water supply filter 6 is transported to the direct drinking water point on the floor through the seventh water pipe 170 for direct drinking, and the sixth pressure gauge 360 ​​and the third flowmeter 530 on the seventh water pipe 170 detect the pressure and flow of the direct drinking water; the PLC controller directly controls the valve opening of the first automatic valve 410, the second automatic valve 420 and the third automatic valve 430 and the start and stop of the raw water pump 7, the high-pressure pump 8 and the water supply pump 9 through the PLC controller by collecting the pressure and flow at various places, so that the direct drinking water is automatically controlled.

[0047] The second water pipe 120 is provided with a low-pressure protector, and the fourth water pipe 140 is provided with a high-pressure protector. When the water pressure in the second water pipe 120 is lower than the set value, the low-pressure protector transmits a signal to the PLC controller, and the PLC controller stops running the raw water pump 7 to prevent damage to the raw water pump 7; when the water pressure in the fourth water pipe 140 is higher than the set value, the high-pressure protector transmits a signal to the PLC controller, and the PLC controller stops running the high-pressure pump to avoid damage to the three RO membranes of the RO membrane system caused by excessive pressure.

[0048] Among them, an antiscalant adding device 10 is also provided between the sand carbon filter 2 and the high-pressure pump 8. A metering pump is provided at the outlet end of the antiscalant adding device 10, and the metering pump is connected to the third water pipe 130. The setting of the antiscalant adding device 10 prevents impurities in the water from scaling in the water pipe and affecting the subsequent system operation.

[0049] The raw water tank 1 and the invasive ultraviolet sterilizer 4 are respectively provided with a first liquid level sensor 710 and a second liquid level sensor 720. The first liquid level sensor 710 and the second liquid level sensor 720 are connected to the PLC controller. The first liquid level sensor 710 and the second liquid level sensor 720 detect the liquid levels of the raw water tank 1 and the invasive ultraviolet sterilizer 4 respectively. The PLC controller cooperates with the automatic control valve and the pump to make the liquid levels of the raw water tank 1 and the invasive ultraviolet sterilizer 4 at the set value, so that the system operates normally.

[0050] A safety filter 11 is also provided in front of the RO membrane system 3. A seventh pressure gauge 370 is provided on the third water pipe 130 at the rear end of the safety filter 11. The seventh pressure gauge 370 is connected to the PLC controller.

[0051] The lower end of the RO membrane system 3 is provided with a brine external discharge pipe 190, on which a RO brine pressure gauge 390, a RO brine automatic valve 440 and a RO brine flow meter 540 are provided. The brine filtered by the RO membrane system 3 is discharged through the brine external discharge pipe 190; the brine discharge flow rate is detected by the flow rate on the main road of the brine external discharge pipe 190. When the flow rate detected by the RO brine pressure gauge 390 is too high, the PLC controller controls the RO brine automatic valve 440 on the bypass of the brine external discharge pipe 190 to increase the discharge. The RO brine pressure gauge 390, the RO brine automatic valve 440 and the RO brine flow meter 540 are connected to the PLC controller.

[0052] Among them, a main return water pipe 180 is arranged behind the direct drinking water point on the floor, and a return water flow meter 550, a return water conductivity meter 610 and a return water pressure gauge 380 are arranged on the main return water pipe 180. The main return water pipe 180 is connected to the first return water branch pipe 181 and the second return water branch pipe 182. The first return water branch pipe 181 is connected to the invasive ultraviolet sterilizer 4, and the second return water branch pipe 182 is connected to the raw water tank 1. The first return water branch pipe 181 is provided with a first return water automatic valve 450, and the second return water branch pipe 182 is provided with a second return water automatic valve 460. The setting of the main water return pipe 180 prevents the drinking water from being in the drinking water point on the floor when not in use, causing the drinking water to stay for too long and affecting its water quality. When the conductivity of the drinking water (the conductivity detected by the third conductivity meter 640) meets the requirements, the drinking water is directly discharged back to the invasive ultraviolet sterilizer 4 through the first water return branch pipe 181 for continuous recycling; when the conductivity of the drinking water does not meet the requirements, the drinking water is directly discharged back to the raw water tank 1 through the second water return branch pipe 182, and the water is reprocessed and used. The return water flow meter 550, the return water conductivity meter 610 and the return water pressure gauge 380 are connected to the PLC controller.

[0053] The second water pipe 120 is connected to the raw water tank 1 through the raw water return pipe 200, and a raw water return automatic valve 470 is provided on the raw water return pipe 200. When the required water flow after the raw water pump 7 is less than the output of the raw water pump 7, the PLC controller controls the raw water return automatic valve 470 to return the raw water. The raw water return automatic valve 470 is connected to the PLC controller.

[0054] The third water pipe 130, the fourth water pipe 140 and the seventh water pipe 170 are respectively provided with a first conductivity meter 620, a second conductivity meter 630 and a third conductivity meter 640. The first conductivity meter 620, the second conductivity meter 630 and the third conductivity meter 640 are connected to a PLC controller.

[0055] The fourth water pipe 140 is connected to the unqualified water pipe 210, and the unqualified water pipe 210 is provided with an unqualified water return automatic valve 480. When the first conductivity meter 620 on the fourth water pipe 140 detects that the conductivity of the water after RO membrane filtration does not meet the requirements, the PLC controller controls the third automatic control valve and the unqualified water return automatic valve 480 to discharge the water after RO membrane filtration back to the original water tank 1 through the unqualified water pipe 210, and the water is reprocessed and used. The unqualified water return automatic valve 480 is connected to the PLC controller.

[0056] There are two invasive ultraviolet sterilizers 4, one for backup and one for use.

[0057] There are two water supply pumps 9, one for backup and one for use.

[0058] When the utility model is used, the first pressure gauge 310 is generally 1.0MPa; the second pressure gauge 320 is generally 1.0MPa; the third pressure gauge 330 is generally 1.0MPa; the fourth pressure gauge 340 is generally 2.5MPa; the fifth pressure gauge 350 is generally 1.0MPa; the sixth pressure gauge 360 ​​is generally 1.0MPa; the seventh pressure gauge 370 is generally 1.0MPa; the return water pressure gauge 380 is generally 1.0MPa; and the RO concentrated water pressure gauge 380 is generally 2.5MPa.

[0059] The production volume of this embodiment is 1m 3 / h, raw water pump 1 adopts CHL2-40, N=0.55KW, AC380V; high pressure pump 8 adopts CDMF1-23, Q=2m 3 / h, H=90m, N=1.5KW, AC380V; water supply pump 9 adopts CDMF5-17, Q=5m 3 / h, H=105m, N=3.0KW, AC380V; the sand carbon filter 2 includes activated carbon filter material and quartz sand, the particle size of the quartz sand is 4-8mm or 1-2mm; the particle size of the activated carbon filter material is 6-16 mesh; the security filter 11 is Φ200×500mm; the nanofiltration membrane in the RO membrane system adopts VNF1-4040; the first flowmeter 510, the second flowmeter 520, the third flowmeter 530, the RO concentrated water flowmeter 540 and the return water flowmeter 550 adopt LDG-SU P-DN32 or LDG-SUP-DN25; the PLC controller adopts DSKZ-020601; the first pressure gauge 310, the second pressure gauge 320, the third pressure gauge 330, the fourth pressure gauge 340, the fifth pressure gauge 350, the sixth pressure gauge 360, the seventh pressure gauge 370, the return water pressure gauge 380 and the RO concentrated water pressure gauge 390 adopt SUP-YC180; the first liquid level sensor 710 and the second liquid level sensor 720 adopt SUP-MP-C-5M-QM.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. Direct drinking water machine, characterized by: The invention comprises a box body (1000), wherein a raw water tank skid-mounted assembly (1100), a nanofiltration skid-mounted assembly (1200), a sterile water tank skid-mounted assembly (1300) and a water supply pump assembly (1400) are arranged in the box body (1000); the raw water tank skid-mounted assembly (1100) is used for storing raw water and then transporting it to the nanofiltration skid-mounted assembly (1200); the nanofiltration skid-mounted assembly (1200) is used for transporting raw water, filtering the raw water through sand carbon and RO membrane, and then transporting it to the sterile water tank skid-mounted assembly (1300); the sterile water tank skid-mounted assembly (1300) is used for removing bacteria and viruses from the water after RO membrane filtration to obtain direct drinking water, and transporting the direct drinking water to the water supply pump assembly (1400); the water supply pump assembly (1400) is used for transporting the direct drinking water to the direct drinking water points on each floor.

2. The direct drinking water machine according to claim 1, characterized in that: The raw water tank skid-mounted assembly (1100) comprises a raw water tank (1) and a raw water tank skid-mounted base (1110); one end of the raw water tank (1) is connected to a tap water pipe (110); the other end of the raw water tank (1) is connected to a nanofiltration skid-mounted assembly (1200); and the raw water tank (1) is arranged on the raw water tank skid-mounted base (1110).

3. The direct drinking water machine according to claim 2, characterized in that: The nanofiltration skid-mounted assembly (1200) comprises a raw water pump (7), a sand carbon filter (2), a high-pressure pump (8), an RO membrane system (3) and a nanofiltration skid-mounted base (1210); the raw water pump (7), the sand carbon filter (2), the high-pressure pump (8) and the RO membrane system (3) are arranged on the nanofiltration skid-mounted base (1210); and the raw water pump (7), the sand carbon filter (2), the high-pressure pump (8) and the RO membrane system (3) are connected in sequence via pipelines.

4. The direct drinking water machine according to claim 3, characterized in that: A security filter (11) is also provided on the nanofiltration skid-mounted base (1210).

5. The direct drinking water machine according to claim 4, characterized in that: The sterile water tank skid-mounted assembly (1300) comprises an invasive ultraviolet sterilizer (4), a water supply ultraviolet sterilizer (5) and a sterile water tank skid-mounted base (1310); the invasive ultraviolet sterilizer (4) and the water supply ultraviolet sterilizer (5) are connected in sequence; the invasive ultraviolet sterilizer (4) is arranged on the sterile water tank skid-mounted base (1310), and the water supply ultraviolet sterilizer (5) is arranged on the invasive ultraviolet sterilizer (4).

6. The direct drinking water machine according to claim 5, characterized in that: Two invasive ultraviolet sterilizers (4) are provided.

7. The direct drinking water machine according to claim 1, characterized in that: The water supply pump assembly (1400) comprises a water supply pump (9) and a water supply pump base (1410); the water supply pump (9) is arranged on the water supply pump base (1410); the input end of the water supply pump (9) is connected to the output end of the water supply ultraviolet sterilizer (5); and the output end of the water supply pump (9) is connected to a direct drinking water point on a floor.

8. The direct drinking water machine according to claim 7, characterized in that: Two water supply pumps (9) are provided.

9. The direct drinking water machine according to claim 8, characterized in that: A pressure stabilizing tank (12) is also provided on the water supply pump base (1410).

10. The direct drinking water machine according to claim 9, characterized in that: A water supply filter (6) is also provided on the water supply pump base (1410).

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