Uninterrupted ultrafiltration water production device

Abstract

The utility model discloses an uninterrupted ultrafiltration water production device. Comprising a raw water tank, a raw water pump, a water production tank, a backwashing pump, at least one first ultrafiltration membrane, at least one second ultrafiltration membrane, a water supply pipeline, a first water production pipeline, a second water production pipeline, a first backwashing branch, a second backwashing branch, a discharge pipeline, a first water inlet valve, a second water inlet valve, a first water outlet valve, a second water outlet valve, a first backwashing valve and a second backwashing valve, a third backwashing valve and a fourth backwashing valve; wherein a water inlet of the first ultrafiltration membrane is connected with one end of the first water inlet valve, a water inlet of the second ultrafiltration membrane is connected with one end of the second water inlet valve, the other end of the first water inlet valve and the other end of the second water inlet valve are both connected with the water supply pipeline, and the water supply pipeline is connected with the raw water tank. And the raw water pump is connected in the water supply pipeline. According to the utility model, the water can be continuously produced by ultrafiltration.

Description

TECHNICAL FIELD

[0001] The utility model relates to an uninterrupted ultrafiltration water production device. BACKGROUND

[0002] At present, some pharmaceutical enterprises need to first carry out ultrafiltration treatment on raw water through an ultrafiltration water production device when producing purified water, and then carry out purification treatment on the water after ultrafiltration treatment through a purified water machine to produce purified water. A kind of ultrafiltration equipment capable of online backwashing is disclosed in Chinese patent with announcement number CN207401366U. With the rapid development of pharmaceutical industry, many enterprise customers require that purified water machine can be operated uninterruptedly for 24 hours to produce purified water, which requires that the ultrafiltration water production device used therewith also needs to continuously ultrafiltrate water for 24 hours uninterruptedly. However, the ultrafiltration membrane in the ultrafiltration water production device must be forced to backwash after working for 1 hour, otherwise the ultrafiltration membrane will be blocked, and water production needs to be stopped during backwashing, which leads to that the existing ultrafiltration water production device cannot continuously ultrafiltrate water for 24 hours uninterruptedly. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide an uninterrupted ultrafiltration water production device, which can continuously ultrafiltrate water uninterruptedly.

[0004] In order to solve the above technical problems, the technical scheme of the utility model is as follows: an uninterrupted ultrafiltration water production device, comprising a raw water tank, a raw water pump, a water production tank, a backwashing pump, at least one first ultrafiltration membrane, at least one second ultrafiltration membrane, a water supply pipeline, a first water production pipeline, a second water production pipeline, a first backwashing branch, a second backwashing branch, a discharge pipeline, a first water inlet valve, a second water inlet valve, a first water outlet valve, a second water outlet valve, a first backwashing valve, a second backwashing valve, a third backwashing valve and a fourth backwashing valve.

[0005] The water inlet of the first ultrafiltration membrane is connected with one end of the first water inlet valve.

[0006] The water inlet of the second ultrafiltration membrane is connected with one end of the second water inlet valve.

[0007] The other end of the first water inlet valve and the other end of the second water inlet valve are both connected with the water supply pipeline, and the water supply pipeline is connected with the raw water tank.

[0008] The raw water pump is connected in the water supply pipeline and is used to pump raw water in the raw water tank to at least one of the first ultrafiltration membrane and the second ultrafiltration membrane.

[0009] The water outlet of the first ultrafiltration membrane is connected with the first water production pipeline, one end of the first water production pipeline is connected with the first water outlet valve, and the other end of the first water outlet valve is connected with the water production tank.

[0010] The water outlet of the second ultrafiltration membrane is connected with the second water production pipeline, one end of the second water production pipeline is connected with the second water outlet valve, and the other end of the second water outlet valve is connected with the water production tank;

[0011] The inlet of the backwashing pump is connected with the water production tank, the outlet of the backwashing pump is respectively connected with the first backwashing branch and the second backwashing branch, the first backwashing branch is connected with the first water production pipeline, and the second backwashing branch is connected with the second water production pipeline;

[0012] The first backwashing valve is connected in the first backwashing branch, and the second backwashing valve is connected in the second backwashing branch;

[0013] The backwashing port of the first ultrafiltration membrane is connected with one end of the third backwashing valve, and the other end of the third backwashing valve is connected with the discharge pipeline;

[0014] The backwashing port of the second ultrafiltration membrane is connected with one end of the fourth backwashing valve, and the other end of the fourth backwashing valve is connected with the discharge pipeline.

[0015] Further, at least two first ultrafiltration membranes are arranged in parallel, and at least two second ultrafiltration membranes are arranged in parallel.

[0016] Further, the uninterrupted ultrafiltration water production device further comprises a fifth backwashing valve and a sixth backwashing valve;

[0017] The water inlet of the first ultrafiltration membrane is connected with one end of the first water inlet valve and one end of the fifth backwashing valve, the other end of the first water inlet valve is connected with the water supply pipeline, and the other end of the fifth backwashing valve is connected with the discharge pipeline;

[0018] The water inlet of the second ultrafiltration membrane is connected with one end of the second water inlet valve and one end of the sixth backwashing valve, the other end of the second water inlet valve is connected with the water supply pipeline, and the other end of the sixth backwashing valve is connected with the discharge pipeline.

[0019] Further, the water inlet of the first ultrafiltration membrane is connected with a first valve, the water inlet of the first ultrafiltration membrane is connected with the corresponding first valve, and the first valve is connected with one end of the first water inlet valve and one end of the fifth backwashing valve;

[0020] The water outlet of the first ultrafiltration membrane is connected with a second valve, the water outlet of the first ultrafiltration membrane is connected with the corresponding second valve, and the second valve is connected with the first water production pipeline;

[0021] The first ultrafiltration membrane is connected with a third valve, and the first ultrafiltration membrane is connected with the corresponding third valve, and the third valve is connected with one end of the third backwashing valve;

[0022] The water inlet of the second ultrafiltration membrane is connected with a fourth valve, and the water inlet of the second ultrafiltration membrane is connected with the corresponding fourth valve, and the fourth valve is connected with one end of the second water inlet valve and one end of the sixth backwashing valve respectively;

[0023] The water outlet of the second ultrafiltration membrane is connected with a fifth valve, and the water outlet of the second ultrafiltration membrane is connected with the corresponding fifth valve, and the fifth valve is connected with the second water production pipeline;

[0024] The backwashing port of the second ultrafiltration membrane is connected with a sixth valve, and the backwashing port of the second ultrafiltration membrane is connected with the corresponding sixth valve, and the sixth valve is connected with one end of the fourth backwashing valve.

[0025] Further, the uninterrupted ultrafiltration water production device further comprises a water supplement pipeline, a disinfection tank and a disinfection pump;

[0026] One end of the water supplement pipeline is connected with the raw water tank, and the other end of the water supplement pipeline is connected with a water source;

[0027] The disinfection tank contains a disinfectant, the inlet of the disinfection pump is connected with the disinfection tank, and the outlet of the disinfection pump is connected with the water supplement pipeline.

[0028] Further, the uninterrupted ultrafiltration water production device further comprises a liquid level meter, a water supplement valve and a controller;

[0029] The liquid level meter is installed in the raw water tank and is used to detect the water level height information in the raw water tank;

[0030] The water supplement valve is connected in the water supplement pipeline;

[0031] The controller is connected with the liquid level meter, and the controller is also connected with the water supplement valve, and the controller is used to control the water supplement valve to open and close according to the water level height information in the raw water tank.

[0032] Further, the uninterrupted ultrafiltration water production device further comprises a filter, a first flow meter and a controller;

[0033] The filter is connected in the water supply pipeline and is used to filter the water in the water supply pipeline;

[0034] The first flow meter is connected in the water supply pipeline and is used to detect the first flow information in the water supply pipeline, and the first flow meter is connected with the controller and is used to send the detected first flow information to the controller.

[0035] The controller is connected with the raw water pump and is used for controlling the raw water pump according to the first flow information.

[0036] Further, the uninterrupted ultrafiltration water production device further comprises an acid liquid tank, an acid liquid pump, a first acid supply branch and a second acid supply branch.

[0037] The acid liquid tank is filled with an acidic liquid.

[0038] The inlet of the acid liquid pump is connected with the acid liquid tank, and the outlet of the acid liquid pump is connected with the first acid supply branch and the second acid supply branch respectively.

[0039] The first acid supply branch is connected with the first water production pipeline, and the second acid supply branch is connected with the second water production pipeline.

[0040] Further, the uninterrupted ultrafiltration water production device further comprises an alkali liquid tank, an alkali liquid pump, a first alkali supply branch and a second alkali supply branch.

[0041] The alkali liquid tank is filled with an alkaline liquid.

[0042] The inlet of the alkali liquid pump is connected with the alkali liquid tank, and the outlet of the alkali liquid pump is connected with the first alkali supply branch and the second alkali supply branch respectively.

[0043] The first alkali supply branch is connected with the first water production pipeline, and the second alkali supply branch is connected with the second water production pipeline.

[0044] Further, the uninterrupted ultrafiltration water production device further comprises a water outlet pipeline, a water outlet pump, a second flow meter and a controller.

[0045] The water outlet pipeline is connected with the water production tank.

[0046] The water outlet pump is connected in the water outlet pipeline and is used for pumping and discharging water in the water production tank from the water outlet pipeline.

[0047] The second flow meter is connected in the water outlet pipeline and is used for detecting second flow information in the water outlet pipeline.

[0048] The second flow meter is connected with the controller and is used for sending the detected second flow information to the controller.

[0049] The controller is connected with the water outlet pump and is used for controlling the water outlet pump according to the second flow information.

[0050] When the first ultrafiltration membrane works to produce water, the first water inlet valve and the first water outlet valve are opened, the first backwashing valve and the third backwashing valve are closed, and the water in the raw water tank flows into the water inlet of the first ultrafiltration membrane through the first water inlet valve under the pumping of the raw water pump, and then flows into the first water production pipeline from the water outlet of the first ultrafiltration membrane, and then flows into the water production tank through the first water outlet valve. When the first ultrafiltration membrane performs up backwashing, the first water inlet valve and the first water outlet valve are closed, the first backwashing valve and the third backwashing valve are opened, the water in the water production tank flows into the water outlet of the first ultrafiltration membrane through the first backwashing branch and the first water production pipeline under the pumping of the backwashing pump, and then flows out from the backwashing port of the first ultrafiltration membrane, and then flows into the discharge pipeline through the third backwashing valve. When the second ultrafiltration membrane works to produce water, the second water inlet valve and the second water outlet valve are opened, the second backwashing valve and the fourth backwashing valve are closed, and the water in the raw water tank flows into the water inlet of the second ultrafiltration membrane through the second water inlet valve under the pumping of the raw water pump, and then flows into the second water production pipeline from the water outlet of the second ultrafiltration membrane, and then flows into the water production tank through the second water outlet valve. When the second ultrafiltration membrane performs up backwashing, the second water inlet valve and the second water outlet valve are closed, the second backwashing valve and the fourth backwashing valve are opened, the water in the water production tank flows into the water outlet of the second ultrafiltration membrane through the second backwashing branch and the second water production pipeline under the pumping of the backwashing pump, and then flows out from the backwashing port of the second ultrafiltration membrane, and then flows into the discharge pipeline through the fourth backwashing valve. When the uninterrupted ultrafiltration water production device in the embodiment of the application works normally, the first ultrafiltration membrane and the second ultrafiltration membrane both work to produce water, at this time, the first water inlet valve and the first water outlet valve are opened, the first backwashing valve and the third backwashing valve are closed, the second water inlet valve and the second water outlet valve are opened, and the second backwashing valve and the fourth backwashing valve are closed. When the first ultrafiltration membrane needs to be backwashed, the second ultrafiltration membrane can work to produce water, at this time, the first water inlet valve and the first water outlet valve are closed, the first backwashing valve and the third backwashing valve are opened, the second water inlet valve and the second water outlet valve are opened, and the second backwashing valve and the fourth backwashing valve are closed. When the second ultrafiltration membrane needs to be backwashed, the first ultrafiltration membrane can work to produce water, at this time, the first water inlet valve and the first water outlet valve are opened, the first backwashing valve and the third backwashing valve are closed, the second water inlet valve and the second water outlet valve are closed, and the second backwashing valve and the fourth backwashing valve are opened. In summary, when working normally, the first ultrafiltration membrane and the second ultrafiltration membrane work to produce water at the same time, when the first ultrafiltration membrane is backwashed, the second ultrafiltration membrane works to produce water, and when the second ultrafiltration membrane is backwashed, the first ultrafiltration membrane works to produce water, so that uninterrupted continuous ultrafiltration water production can be realized for 24 hours without stopping water production, and the most basic water production can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 It is a structure schematic view of the uninterrupted ultrafiltration water production device of the utility model;

[0052] Figure 2The structure schematic view when the first ultrafiltration membrane and the second ultrafiltration membrane both work to produce water is shown in the figure of the utility model.

[0053] Figure 3 The structure schematic view when the first ultrafiltration membrane works to produce water and the second ultrafiltration membrane works to produce water is shown in the figure of the utility model.

[0054] Figure 4 The structure schematic view when the first ultrafiltration membrane works to produce water and the second ultrafiltration membrane works to produce water is shown in the figure of the utility model.

[0055] Figure 5 The structure schematic view when the first ultrafiltration membrane and the second ultrafiltration membrane both work to produce water is shown in the figure of the utility model.

[0056] Figure 6 The structure schematic view when the first ultrafiltration membrane and the second ultrafiltration membrane both work to produce water is shown in the figure of the utility model.

[0057] In the figure: 1, raw water tank; 2, raw water pump; 3, water production tank; 4, backwashing pump; 5, first ultrafiltration membrane; 6, second ultrafiltration membrane; 7, water supply pipeline; 8, first water production pipeline; 9, second water production pipeline; 10, first backwashing branch; 11, second backwashing branch; 12, discharge pipeline; 13, first water inlet valve; 14, second water inlet valve; 15, first water outlet valve; 16, second water outlet valve; 17, first backwashing valve; 18, second backwashing valve; 19, third backwashing valve; 20, fourth backwashing valve; 21, fifth backwashing valve; 22, sixth backwashing valve; 23, first valve; 24, second valve; 25, third valve; 26, fourth valve; 27, fifth valve; 28, sixth valve; 29, water supplement pipeline; 30, disinfection tank; 31, disinfection pump; 32, liquid level meter; 33, water supplement valve; 34, filter; 35, first flow meter; 36, acid liquid tank; 37, acid liquid pump; 38, first control valve; 39, second control valve; 40, alkali liquid tank; 41, alkali liquid pump; 42, third control valve; 43, fourth control valve; 44, water outlet pipeline; 45, water outlet pump; 46, second flow meter. DETAILED DESCRIPTION

[0058] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the figure, the utility model is further detailed.

[0059] As Figure 1As shown, an uninterrupted ultrafiltration water production device includes a raw water tank 1, a raw water pump 2, a water production tank 3, a backwashing pump 4, at least one first ultrafiltration membrane 5, at least one second ultrafiltration membrane 6, a water supply pipeline 7, a first water production pipeline 8, a second water production pipeline 9, a first backwashing branch 10, a second backwashing branch 11, a discharge pipeline 12, a first water inlet valve 13, a second water inlet valve 14, a first water outlet valve 15, a second water outlet valve 16, a first backwashing valve 17, a second backwashing valve 18, a third backwashing valve 19, and a fourth backwashing valve 20;

[0060] The first ultrafiltration membrane 5 and the second ultrafiltration membrane 6 each have a water inlet, a water outlet, and a backwashing port.

[0061] The water inlet of the first ultrafiltration membrane 5 is connected to one end of the first water inlet valve 13.

[0062] The water inlet of the second ultrafiltration membrane 6 is connected to one end of the second water inlet valve 14.

[0063] The other end of the first water inlet valve 13 and the other end of the second water inlet valve 14 are both connected to the water supply pipeline 7, and the water supply pipeline 7 is connected to the raw water tank 1.

[0064] The raw water pump 2 is connected in the water supply pipeline 7 and is used to pump raw water in the raw water tank 1 to at least one of the first ultrafiltration membrane 5 and the second ultrafiltration membrane 6.

[0065] The water outlet of the first ultrafiltration membrane 5 is connected to the first water production pipeline 8, the first water production pipeline 8 is connected to one end of the first water outlet valve 15, and the other end of the first water outlet valve 15 is connected to the water production tank 3.

[0066] The water outlet of the second ultrafiltration membrane 6 is connected to the second water production pipeline 9, the second water production pipeline 9 is connected to one end of the second water outlet valve 16, and the other end of the second water outlet valve 16 is connected to the water production tank 3.

[0067] The inlet of the backwashing pump 4 is connected to the water production tank 3, the outlet of the backwashing pump 4 is connected to the first backwashing branch 10 and the second backwashing branch 11 respectively, the first backwashing branch 10 is connected to the first water production pipeline 8, and the second backwashing branch 11 is connected to the second water production pipeline 9.

[0068] The first backwashing valve 17 is connected in the first backwashing branch 10, and the second backwashing valve 18 is connected in the second backwashing branch 11.

[0069] The backwashing port of the first ultrafiltration membrane 5 is connected to one end of the third backwashing valve 19, and the other end of the third backwashing valve 19 is connected to the discharge pipeline 12.

[0070] The backwash port of the second ultrafiltration membrane 6 is connected to one end of the fourth backwash valve 20, and the other end of the fourth backwash valve 20 is connected to the discharge pipeline 12.

[0071] Specifically, when the first ultrafiltration membrane 5 is working to produce water, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwash valve 17 and the third backwash valve 19 are closed, and the water in the raw water tank 1 flows into the water inlet port of the first ultrafiltration membrane 5 after being pumped by the raw water pump 2, and then flows into the first water production pipeline 8 from the water outlet port of the first ultrafiltration membrane 5, and then flows into the water production tank 3 after flowing through the first water outlet valve 15. When the first ultrafiltration membrane 5 is backwashed, the first water inlet valve 13 and the first water outlet valve 15 are closed, the first backwash valve 17 and the third backwash valve 19 are opened, and the water in the water production tank 3 flows into the first backwash branch 10 and the first water production pipeline 8 after being pumped by the backwash pump 4, and then flows into the first ultrafiltration membrane 5 from the water outlet port of the first ultrafiltration membrane 5, and then flows out from the backwash port of the first ultrafiltration membrane 5, and then flows into the discharge pipeline 12 after flowing through the third backwash valve 19.

[0072] When the second ultrafiltration membrane 6 is working to produce water, the second water inlet valve 14 and the second water outlet valve 16 are opened, the second backwash valve 18 and the fourth backwash valve 20 are closed, and the water in the raw water tank 1 flows into the water inlet port of the second ultrafiltration membrane 6 after being pumped by the raw water pump 2, and then flows into the second water production pipeline 9 from the water outlet port of the second ultrafiltration membrane 6, and then flows into the water production tank 3 after flowing through the second water outlet valve 16. When the second ultrafiltration membrane 6 is backwashed, the second water inlet valve 14 and the second water outlet valve 16 are closed, the second backwash valve 18 and the fourth backwash valve 20 are opened, and the water in the water production tank 3 flows into the second backwash branch 11 and the second water production pipeline 9 after being pumped by the backwash pump 4, and then flows into the second ultrafiltration membrane 6 from the water outlet port of the second ultrafiltration membrane 6, and then flows out from the backwash port of the second ultrafiltration membrane 6, and then flows into the discharge pipeline 12 after flowing through the fourth backwash valve 20.

[0073] The uninterrupted ultrafiltration water production device of the embodiment of the present application is working normally, and the first ultrafiltration membrane 5 and the second ultrafiltration membrane 6 are both working to produce water, at this time, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwash valve 17 and the third backwash valve 19 are closed, the second water inlet valve 14 and the second water outlet valve 16 are opened, and the second backwash valve 18 and the fourth backwash valve 20 are closed, and the water flow direction is as shown in FIG. 2. Figure 2 When the first ultrafiltration membrane 5 needs to be backwashed, the second ultrafiltration membrane 6 can be working to produce water, at this time, the first water inlet valve 13 and the first water outlet valve 15 are closed, the first backwash valve 17 and the third backwash valve 19 are opened, the second water inlet valve 14 and the second water outlet valve 16 are opened, and the second backwash valve 18 and the fourth backwash valve 20 are closed, and the water flow direction is as shown in FIG. 3. Figure 3When the second ultrafiltration membrane 6 needs to be backwashed, the first ultrafiltration membrane 5 can be used to produce water, at this time, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwashing valve 17 and the third backwashing valve 19 are closed, the second water inlet valve 14 and the second water outlet valve 16 are closed, the second backwashing valve 18 and the fourth backwashing valve 20 are opened, and the water flow direction is as shown in the figure. Figure 4 In summary, the first ultrafiltration membrane 5 and the second ultrafiltration membrane 6 produce water at the same time in normal operation, the second ultrafiltration membrane 6 produces water when the first ultrafiltration membrane 5 is backwashed, and the first ultrafiltration membrane 5 produces water when the second ultrafiltration membrane 6 is backwashed, so that continuous ultrafiltration water production can be realized for 24 hours without interruption, the water production does not need to be stopped, and the most basic water production can be ensured.

[0074] As shown in the figure, the first ultrafiltration membrane 5 is provided with at least two in parallel, and the second ultrafiltration membrane 6 is provided with at least two in parallel. Figure 1

[0075] As shown in the figure, the uninterrupted ultrafiltration water production device can further include a fifth backwashing valve 21 and a sixth backwashing valve 22. Figure 1

[0076] The water inlet of the first ultrafiltration membrane 5 is connected to one end of the first water inlet valve 13 and one end of the fifth backwashing valve 21, respectively, the other end of the first water inlet valve 13 is connected to the water supply pipeline 7, and the other end of the fifth backwashing valve 21 is connected to the discharge pipeline 12.

[0077] The water inlet of the second ultrafiltration membrane 6 is connected to one end of the second water inlet valve 14 and one end of the sixth backwashing valve 22, respectively, the other end of the second water inlet valve 14 is connected to the water supply pipeline 7, and the other end of the sixth backwashing valve 22 is connected to the discharge pipeline 12.

[0078] Specifically, the fifth backwashing valve 21 needs to be kept closed when the first ultrafiltration membrane 5 produces water or is backwashed, and the sixth backwashing valve 22 needs to be kept closed when the second ultrafiltration membrane 6 produces water or is backwashed.

[0079] ​​Further specifically, when the first ultrafiltration membrane 5 is subjected to the down backwash, the first water inlet valve 13, the first water outlet valve 15 and the third backwash valve 19 are closed, the first backwash valve 17 and the fifth backwash valve 21 are opened, the water in the water tank 3 is pumped by the backwash pump 4, flows through the first backwash branch 10 and the first water production pipeline 8, flows into the first ultrafiltration membrane 5 from the water outlet of the first ultrafiltration membrane 5, flows out from the water inlet of the first ultrafiltration membrane 5, then flows through the fifth backwash valve 21 and flows into the discharge pipeline 12.

[0080] In the embodiment, when the first ultrafiltration membrane 5 needs to be subjected to the down backwash, the second ultrafiltration membrane 6 can be used for working water production, at this time, the first water inlet valve 13, the first water outlet valve 15 and the third backwash valve 19 are closed, the first backwash valve 17 and the fifth backwash valve 21 are opened, the second water inlet valve 14 and the second water outlet valve 16 are opened, the second backwash valve 18, the fourth backwash valve 20 and the sixth backwash valve 22 are closed, and the water flow direction is as shown in Figure 5

[0081] In the embodiment, when the second ultrafiltration membrane 6 needs to be subjected to the down backwash, the first ultrafiltration membrane 5 can be used for working water production, at this time, the first water inlet valve 13, the first water outlet valve 15 are opened, the first backwash valve 17, the third backwash valve 19 and the fifth backwash valve 21 are closed, the second water inlet valve 14, the second water outlet valve 16 and the fourth backwash valve 20 are closed, the second backwash valve 18 and the sixth backwash valve 22 are opened, and the water flow direction is as shown in Figure 6

[0082] In the embodiment, the water inlets of each first ultrafiltration membrane 5 are connected with one end of the first water inlet valve 13 and one end of the fifth backwash valve 21 respectively, the water outlets of each first ultrafiltration membrane 5 are connected with the first water production pipeline 8, and the backwash ports of each first ultrafiltration membrane 5 are connected with one end of the third backwash valve 19. The water inlets of each second ultrafiltration membrane 6 are connected with one end of the second water inlet valve 14 and one end of the sixth backwash valve 22 respectively, the water outlets of each second ultrafiltration membrane 6 are connected with the second water production pipeline 9, and the backwash ports of each second ultrafiltration membrane 6 are connected with one end of the fourth backwash valve 20.

[0083] As shown in Figure 1 the water inlets of the first ultrafiltration membrane 5 are connected with the first valves 23, the water inlets of the first ultrafiltration membrane 5 are connected with the corresponding first valves 23, and the first valves 23 are connected with one end of the first water inlet valve 13 and one end of the fifth backwash valve 21 respectively; ​​

[0084] The outlet of the first ultrafiltration membrane 5 is connected to a second valve 24. The outlet of the first ultrafiltration membrane 5 is connected to the corresponding second valve 24. The second valve 24 is connected to the first product water pipeline 8.

[0085] The backwash port of the first ultrafiltration membrane 5 is connected to a third valve 25. The backwash port of the first ultrafiltration membrane 5 is connected to the corresponding third valve 25. The third valve 25 is connected to one end of the third backwash valve 19.

[0086] The inlet of the second ultrafiltration membrane 6 is connected to a fourth valve 26. The inlet of the second ultrafiltration membrane 6 is connected to the corresponding fourth valve 26. The fourth valve 26 is connected to one end of the second inlet valve 14 and one end of the sixth backwash valve 22, respectively.

[0087] The outlet of the second ultrafiltration membrane 6 is connected to a fifth valve 27. The outlet of the second ultrafiltration membrane 6 is connected to the corresponding fifth valve 27. The fifth valve 27 is connected to the second product water pipeline 9.

[0088] The backwash port of the second ultrafiltration membrane 6 is connected to a sixth valve 28. The backwash port of the second ultrafiltration membrane 6 is connected to the corresponding sixth valve 28, and the sixth valve 28 is connected to one end of the fourth backwash valve 20.

[0089] like Figure 1 As shown, the uninterrupted ultrafiltration water production device may also include a water supply pipeline 29, a disinfection tank 30, and a disinfection pump 31;

[0090] One end of the water supply pipe 29 is connected to the original water tank 1, and the other end of the water supply pipe 29 is connected to the water source;

[0091] The disinfection tank 30 contains disinfectant, the inlet of the disinfection pump 31 is connected to the disinfection tank 30, and the outlet of the disinfection pump 31 is connected to the water supply pipeline 29. Specifically, water can be supplied to the raw water tank 1 through the water supply pipeline 29. The water source can be tap water. The disinfection pump 31 can pump the disinfectant in the disinfection tank 30 to the water supply pipeline 29 to disinfect the tap water entering the raw water tank 1.

[0092] like Figure 1 As shown, the uninterrupted ultrafiltration water production device may further include a level gauge 32, a water supply valve 33, and a controller;

[0093] The level gauge 32 is installed in the raw water tank 1 and is used to detect the water level information in the raw water tank 1.

[0094] The water supply valve 33 is connected in the water supply pipe 29;

[0095] The controller is connected with the liquid level meter 32, and the controller is also connected with the water replenishing valve 33, and the controller is used for controlling the water replenishing valve 33 to open and close according to the water level information in the raw water tank 1.

[0096] As shown in the figure, the uninterrupted ultrafiltration water production device can further comprise a filter 34, a first flow meter 35 and a controller. Figure 1

[0097] The filter 34 is connected in the water supply pipeline 7 and is used for filtering the water in the water supply pipeline 7.

[0098] The first flow meter 35 is connected in the water supply pipeline 7 and is used for detecting the first flow information in the water supply pipeline 7.

[0099] The first flow meter 35 is connected with the controller and is used for sending the detected first flow information to the controller.

[0100] The controller is connected with the raw water pump 2 and is used for controlling the raw water pump 2 to work according to the first flow information; specifically, when the first flow information detected by the first flow meter 35 is lower than a preset value, the controller controls the raw water pump 2 to increase the running speed, and when the first flow information detected by the first flow meter 35 is higher than the preset value, the controller controls the raw water pump 2 to decrease the running speed, so as to make the flow in the water supply pipeline 7 constant.

[0101] As shown in the figure, the uninterrupted ultrafiltration water production device can further comprise an acid liquid tank 36, an acid liquid pump 37, a first acid supply branch and a second acid supply branch. Figure 1

[0102] The acid liquid tank 36 contains acidic liquid.

[0103] The inlet of the acid liquid pump 37 is connected with the acid liquid tank 36, and the outlet of the acid liquid pump 37 is connected with the first acid supply branch and the second acid supply branch respectively.

[0104] The first acid supply branch is connected with the first water production pipeline 8, and the second acid supply branch is connected with the second water production pipeline 9, and the first acid supply branch is connected with a first control valve 38, and the second acid supply branch is connected with a second control valve 39.

[0105] As shown in the figure, the uninterrupted ultrafiltration water production device can further comprise an alkali liquid tank 40, an alkali liquid pump 41, a first alkali supply branch and a second alkali supply branch. Figure 1

[0106] The alkali liquid tank 40 contains alkaline liquid.

[0107] ​​​The inlet of the alkali solution pump 41 is connected with the alkali solution tank 40, and the outlet of the alkali solution pump 41 is connected with the first alkali solution supply branch and the second alkali solution supply branch respectively;

[0108] The first alkali solution supply branch is connected with the first water production pipeline 8, and the second alkali solution supply branch is connected with the second water production pipeline 9. The third control valve 42 is connected in the first alkali solution supply branch, and the fourth control valve 43 is connected in the second alkali solution supply branch.

[0109] Specifically, when the first ultrafiltration membrane 5 performs up or down backwashing, the acid solution pump 37 and the first control valve 38 are opened first. Under the pumping of the acid solution pump 37, the acidic liquid in the acid solution tank 36 flows through the first acid solution supply branch and the first water production pipeline 8 in turn and then flows into the water outlet of the first ultrafiltration membrane 5, so that the first ultrafiltration membrane 5 can be acid washed. After a period of acid washing, the acid solution pump 37 and the first control valve 38 are closed, the alkali solution pump 41 and the third control valve 42 are opened, and under the pumping of the alkali solution pump 41, the alkaline liquid in the alkali solution tank 40 flows through the first alkali solution supply branch and the first water production pipeline 8 in turn and then flows into the water outlet of the first ultrafiltration membrane 5, so that the first ultrafiltration membrane 5 can be alkali washed. Similarly, when the second ultrafiltration membrane 6 performs up or down backwashing, the acid solution pump 37 and the second control valve 39 are opened first. Under the pumping of the acid solution pump 37, the acidic liquid in the acid solution tank 36 flows through the second acid solution supply branch and the second water production pipeline 9 in turn and then flows into the water outlet of the second ultrafiltration membrane 6, so that the second ultrafiltration membrane 6 can be acid washed. After a period of acid washing, the acid solution pump 37 and the second control valve 39 are closed, the alkali solution pump 41 and the fourth control valve 43 are opened, and under the pumping of the alkali solution pump 41, the alkaline liquid in the alkali solution tank 40 flows through the second alkali solution supply branch and the second water production pipeline 9 in turn and then flows into the water outlet of the second ultrafiltration membrane 6, so that the second ultrafiltration membrane 6 can be alkali washed. In this embodiment, the acidic liquid can be a citric acid solution, and the alkaline liquid can be a sodium hydroxide solution.

[0110] As shown in Figure 1 The uninterrupted ultrafiltration water production device can further include a water outlet pipeline 44, a water outlet pump 45, a second flow meter 46 and a controller;

[0111] The water outlet pipeline 44 is connected with the water production tank 3;

[0112] The water outlet pump 45 is connected in the water outlet pipeline 44 and is used for pumping and discharging water in the water production tank 3 from the water outlet pipeline 44;

[0113] The second flow meter 46 is connected in the water outlet pipeline 44 and is used for detecting the second flow information in the water outlet pipeline 44;

[0114] The second flow meter 46 is connected to the controller and is configured to send the detected second flow information to the controller;

[0115] The controller is connected to the water outlet pump 45 and is configured to control the water outlet pump 45 according to the second flow information; specifically, the water in the water production tank 3 after ultrafiltration can be pumped to the subsequent treatment process through the water outlet pipeline 44 and the water outlet pump 45. When the second flow information detected by the second flow meter 46 is lower than the preset value, the controller controls the water outlet pump 45 to increase the running speed; when the second flow information detected by the second flow meter 46 is higher than the preset value, the controller controls the water outlet pump 45 to reduce the running speed, so as to keep the flow in the water supply pipeline 7 constant.

[0116] In summary, when the first ultrafiltration membrane 5 works to produce water, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwash valve 17 and the third backwash valve 19 are closed, the water in the raw water tank 1 flows into the water inlet of the first ultrafiltration membrane 5 after being pumped by the raw water pump 2, and then flows into the first water production pipeline 8 from the water outlet of the first ultrafiltration membrane 5, and then flows into the water production tank 3 after flowing through the first water outlet valve 15. When the first ultrafiltration membrane 5 performs up-backwashing, the first water inlet valve 13 and the first water outlet valve 15 are closed, the first backwash valve 17 and the third backwash valve 19 are opened, the water in the water production tank 3 flows into the first backwash branch 10 and the first water production pipeline 8 after being pumped by the backwash pump 4, and then flows into the first ultrafiltration membrane 5 from the water outlet of the first ultrafiltration membrane 5, and then flows out from the backwash port of the first ultrafiltration membrane 5, and then flows into the discharge pipeline 12 after flowing through the third backwash valve 19. When the second ultrafiltration membrane 6 works to produce water, the second water inlet valve 14 and the second water outlet valve 16 are opened, the second backwash valve 18 and the fourth backwash valve 20 are closed, the water in the raw water tank 1 flows into the water inlet of the second ultrafiltration membrane 6 after being pumped by the raw water pump 2, and then flows into the second water production pipeline 9 from the water outlet of the second ultrafiltration membrane 6, and then flows into the water production tank 3 after flowing through the second water outlet valve 16. When the second ultrafiltration membrane 6 performs up-backwashing, the second water inlet valve 14 and the second water outlet valve 16 are closed, the second backwash valve 18 and the fourth backwash valve 20 are opened, the water in the water production tank 3 flows into the second backwash branch 11 and the second water production pipeline 9 after being pumped by the backwash pump 4, and then flows into the second ultrafiltration membrane 6 from the water outlet of the second ultrafiltration membrane 6, and then flows out from the backwash port of the second ultrafiltration membrane 6, and then flows into the discharge pipeline 12 after flowing through the fourth backwash valve 20.

[0117] The first ultrafiltration membrane 5 and the second ultrafiltration membrane 6 both work to produce water when the uninterrupted ultrafiltration water production device works normally, at this time, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwashing valve 17 and the third backwashing valve 19 are closed, the second water inlet valve 14 and the second water outlet valve 16 are opened, and the second backwashing valve 18 and the fourth backwashing valve 20 are closed. When the first ultrafiltration membrane 5 needs to be backwashed, the second ultrafiltration membrane 6 can work to produce water, at this time, the first water inlet valve 13 and the first water outlet valve 15 are closed, the first backwashing valve 17 and the third backwashing valve 19 are opened, the second water inlet valve 14 and the second water outlet valve 16 are opened, and the second backwashing valve 18 and the fourth backwashing valve 20 are closed. When the second ultrafiltration membrane 6 needs to be backwashed, the first ultrafiltration membrane 5 can work to produce water, at this time, the first water inlet valve 13 and the first water outlet valve 15 are opened, the first backwashing valve 17 and the third backwashing valve 19 are closed, the second water inlet valve 14 and the second water outlet valve 16 are closed, and the second backwashing valve 18 and the fourth backwashing valve 20 are opened. In summary, the first ultrafiltration membrane 5 and the second ultrafiltration membrane 6 both work to produce water when working normally, the second ultrafiltration membrane 6 works to produce water when the first ultrafiltration membrane 5 is backwashed, and the first ultrafiltration membrane 5 works to produce water when the second ultrafiltration membrane 6 is backwashed, so that uninterrupted continuous ultrafiltration water production can be realized for 24 hours, water production does not need to be stopped, and the most basic water production amount can be ensured.

[0118] The above-described specific embodiments further specifically describe the technical problems solved by the present application, technical solutions and beneficial effects. It should be understood that the above-described embodiments are merely specific embodiments of the present application and are not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An apparatus for producing water by ultrafiltration without interruption, characterized in that The first ultrafiltration membrane (5) is connected with one end of the first water inlet valve (13), and the water inlet of the second ultrafiltration membrane (6) is connected with one end of the second water inlet valve (14). The other end of the first water inlet valve (13) and the other end of the second water inlet valve (14) are connected with the water supply pipeline (7), and the water supply pipeline (7) is connected with the raw water tank (1). The raw water pump (2) is connected in the water supply pipeline (7) and is used to pump raw water in the raw water tank (1) to at least one of the first ultrafiltration membrane (5) and the second ultrafiltration membrane (6). The water outlet of the first ultrafiltration membrane (5) is connected with the first water production pipeline (8), one end of the first water production pipeline (8) is connected with the first water outlet valve (15), and the other end of the first water outlet valve (15) is connected with the water production tank (3). The water outlet of the second ultrafiltration membrane (6) is connected with the second water production pipeline (9), one end of the second water production pipeline (9) is connected with the second water outlet valve (16), and the other end of the second water outlet valve (16) is connected with the water production tank (3). The inlet of the backwashing pump (4) is connected with the water production tank (3), the outlet of the backwashing pump (4) is connected with the first backwashing branch (10) and the second backwashing branch (11) respectively, the first backwashing branch (10) is connected with the first water production pipeline (8), and the second backwashing branch (11) is connected with the second water production pipeline (9). The first backwashing valve (17) is connected in the first backwashing branch (10), and the second backwashing valve (18) is connected in the second backwashing branch (11). The backwashing port of the first ultrafiltration membrane (5) is connected with one end of the third backwashing valve (19), and the other end of the third backwashing valve (19) is connected with the discharge pipeline (12). The backwashing port of the second ultrafiltration membrane (6) is connected with one end of the fourth backwashing valve (20), and the other end of the fourth backwashing valve (20) is connected with the discharge pipeline (12). The first ultrafiltration membrane (5) is provided with at least two in parallel, and the second ultrafiltration membrane (6) is provided with at least two in parallel. The first ultrafiltration membrane (5) is provided with at least two in parallel, and the second ultrafiltration membrane (6) is provided with at least two in parallel.

2. The device according to claim 1, wherein The first ultrafiltration membrane (5) is provided with at least two in parallel, and the second ultrafiltration membrane (6) is provided with at least two in parallel.

3. The device according to claim 1, wherein The first ultrafiltration membrane (5) is provided with at least two in parallel, and the second ultrafiltration membrane (6) is provided with at least two in parallel. The water inlet of the first ultrafiltration membrane (5) is connected with one end of the first water inlet valve (13) and one end of the fifth backwashing valve (21) respectively, the other end of the first water inlet valve (13) is connected with the water supply pipeline (7), and the other end of the fifth backwashing valve (21) is connected with the discharge pipeline (12); The water inlet of the second ultrafiltration membrane (6) is connected with one end of the second water inlet valve (14) and one end of the sixth backwashing valve (22) respectively, the other end of the second water inlet valve (14) is connected with the water supply pipeline (7), and the other end of the sixth backwashing valve (22) is connected with the discharge pipeline (12).

4. The uninterrupted ultrafiltration water production device according to claim 3, characterized in that, The water inlet of the first ultrafiltration membrane (5) is connected with the first valve (23), the water inlet of the first ultrafiltration membrane (5) is connected with the corresponding first valve (23), and the first valve (23) is connected with one end of the first water inlet valve (13) and one end of the fifth backwashing valve (21) respectively; The water outlet of the first ultrafiltration membrane (5) is connected with the second valve (24), the water outlet of the first ultrafiltration membrane (5) is connected with the corresponding second valve (24), and the second valve (24) is connected with the first water production pipeline (8); The backwashing port of the first ultrafiltration membrane (5) is connected with the third valve (25), the backwashing port of the first ultrafiltration membrane (5) is connected with the corresponding third valve (25), and the third valve (25) is connected with one end of the third backwashing valve (19); The water inlet of the second ultrafiltration membrane (6) is connected with the fourth valve (26), the water inlet of the second ultrafiltration membrane (6) is connected with the corresponding fourth valve (26), and the fourth valve (26) is connected with one end of the second water inlet valve (14) and one end of the sixth backwashing valve (22) respectively; The water outlet of the second ultrafiltration membrane (6) is connected with the fifth valve (27), the water outlet of the second ultrafiltration membrane (6) is connected with the corresponding fifth valve (27), and the fifth valve (27) is connected with the second water production pipeline (9); The backwashing port of the second ultrafiltration membrane (6) is connected with the sixth valve (28), the backwashing port of the second ultrafiltration membrane (6) is connected with the corresponding sixth valve (28), and the sixth valve (28) is connected with one end of the fourth backwashing valve (20).

5. The device according to claim 1, wherein Further comprising a water supplement pipeline (29), a disinfection tank (30) and a disinfection pump (31); One end of the water supplement pipeline (29) is connected with the raw water tank (1), the other end of the water supplement pipeline (29) is connected with a water source, the disinfection tank (30) contains a disinfectant, the inlet of the disinfection pump (31) is connected with the disinfection tank (30), and the outlet of the disinfection pump (31) is connected with the water supplement pipeline (29).

6. The device according to claim 5, wherein Further comprising a liquid level meter (32), a water supplement valve (33) and a controller; The liquid level meter (32) is installed in the raw water tank (1) and is used for detecting water level height information in the raw water tank (1); The liquid level meter (32) is installed in the raw water tank (1) and is used for detecting water level height information in the raw water tank (1); The water supplement valve (33) is connected in the water supplement pipeline (29); The controller is connected with the liquid level meter (32), and the controller is also connected with the water supplement valve (33), and the controller is used for controlling the water supplement valve (33) to open and close according to the water level height information in the raw water tank (1).

7. The continuous ultrafiltration water producing device according to claim 1, wherein Further comprising a filter (34), a first flow meter (35) and a controller; The filter (34) is connected in the water supply pipeline (7) and is used for filtering water in the water supply pipeline (7); The first flow meter (35) is connected in the water supply pipeline (7) and is used for detecting first flow information in the water supply pipeline (7); The first flow meter (35) is connected with the controller and is used for sending the detected first flow information to the controller; The controller is connected with the raw water pump (2) and is used for controlling the raw water pump (2) to work according to the first flow information.

8. The continuous ultrafiltration water producing device according to claim 1, wherein Further comprising an acid liquid tank (36), an acid liquid pump (37), a first acid supply branch and a second acid supply branch; The acid liquid tank (36) contains acidic liquid; The inlet of the acid liquid pump (37) is connected with the acid liquid tank (36), and the outlet of the acid liquid pump (37) is connected with the first acid supply branch and the second acid supply branch respectively; The first acid supply branch is connected with the first water production pipeline (8), and the second acid supply branch is connected with the second water production pipeline (9), a first control valve (38) is connected in the first acid supply branch, and a second control valve (39) is connected in the second acid supply branch.

9. The continuous ultrafiltration water producing device according to claim 1, wherein Further comprising an alkali liquid tank (40), an alkali liquid pump (41), a first alkali supply branch and a second alkali supply branch; The alkali liquid tank (40) contains alkaline liquid; The inlet of the alkali liquid pump (41) is connected with the alkali liquid tank (40), and the outlet of the alkali liquid pump (41) is connected with the first alkali supply branch and the second alkali supply branch respectively; The first alkali supply branch is connected with the first water production pipeline (8), and the second alkali supply branch is connected with the second water production pipeline (9), a third control valve (42) is connected in the first alkali supply branch, and a fourth control valve (43) is connected in the second alkali supply branch.

10. The continuous ultrafiltration water producing device according to claim 1, wherein Further comprising a water outlet pipeline (44), a water outlet pump (45), a second flow meter (46) and a controller; The water outlet pipeline (44) is connected with the water production tank (3); The water outlet pump (45) is connected in the water outlet pipeline (44) and is used for pumping and discharging water in the water production tank (3) from the water outlet pipeline (44); The second flow meter (46) is connected in the water outlet pipeline (44) and is used for detecting second flow information in the water outlet pipeline (44); The second flow meter (46) is connected with the controller and is used for sending the detected second flow information to the controller; The controller is connected with the water outlet pump (45) and is used for controlling the water outlet pump (45) to work according to the second flow information.

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