Automatic pressurizing reverse osmosis system

Abstract

The utility model discloses an automatic pressurizing reverse osmosis system which comprises a high-pressure pump (1) connected with inlet water, and a first automatic valve (2), a first conductivity meter (3), a first pressure transmitter (4), a first-stage reverse osmosis membrane mechanism (5), a second-stage reverse osmosis membrane mechanism (6) and a third-stage reverse osmosis membrane mechanism (7) are sequentially arranged on the rear side of the high-pressure pump (1). And reverse osmosis water production pipes (9) with sixth automatic valves (8) are arranged on the water production sides of the first-stage reverse osmosis membrane mechanism (5), the second-stage reverse osmosis membrane mechanism (6) and the third-stage reverse osmosis membrane mechanism (7). Pressurization can be automatically adjusted according to the quality of incoming water, and it is guaranteed that the reverse osmosis water yield can reach a design value.

Description

Technical Field

[0001] The utility model relates to a reverse osmosis system, in particular to an automatic pressurizing reverse osmosis system. Background Art

[0002] Water treatment methods include physical treatment and chemical treatment. Now many companies use a combination of physical and chemical methods to treat incoming water. Among them, physical methods often use filter materials with different pore sizes to remove impurities in the water by adsorption or barrier methods. The most important adsorption method is adsorption with activated carbon, and the barrier method is to pass water through the filter material to prevent larger impurities from passing through, thereby obtaining cleaner water.

[0003] Reverse osmosis is a commonly used method to remove impurities from water by using filter materials as a barrier. Due to the influence of external factors (such as drainage from upstream factories, seasonal snow mountain meltwater, seawater backflow, etc.), the quality of incoming water often changes. The reverse osmosis treatment system needs to manually adjust the operation mode of the reverse osmosis system according to the quality of the incoming water, whether to start the booster pump, how to set the high-pressure pump and booster pump head. It often happens that the booster pump cannot be started in time, and the high-pressure pump and booster pump head are set unreasonably, which will lead to excessive ineffective power of the high-pressure pump and booster pump, and the reverse osmosis water output and water quality cannot reach the design value. In severe cases, it may even cause the reverse osmosis membrane to scale and clog, and the reverse osmosis system will completely stagnate and fail to work. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic pressurized reverse osmosis system, which can automatically adjust the pressurization according to the quality of incoming water to ensure that the reverse osmosis water production can reach the designed value.

[0005] The technical solution of the utility model is as follows: an automatically pressurized reverse osmosis system comprises a high-pressure pump connected to a water inlet, a first automatic valve, a first conductivity meter, a first pressure transmitter, a primary reverse osmosis membrane mechanism, a secondary reverse osmosis membrane mechanism and a tertiary reverse osmosis membrane mechanism are sequentially arranged on the rear side of the high-pressure pump, and a reverse osmosis water production pipe with a sixth automatic valve is arranged on the water production side of the primary reverse osmosis membrane mechanism, the secondary reverse osmosis membrane mechanism and the tertiary reverse osmosis membrane mechanism.

[0006] In the aforementioned automatic pressurizing reverse osmosis system, the primary reverse osmosis membrane mechanism comprises a reverse osmosis membrane tube, a first reverse osmosis membrane is arranged in the reverse osmosis membrane tube, a first liquid inlet and a first concentrated water outlet are arranged on one side of the first reverse osmosis membrane, a three-way joint is arranged on the rear side of the first concentrated water outlet, one end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism via a second-stage booster pump and a third automatic valve, and the other end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism via a second pressure transmitter, a second conductivity meter, a second automatic valve and a third pressure transmitter; a first liquid outlet connected to a reverse osmosis water production pipe is arranged on the other side of the first reverse osmosis membrane.

[0007] In the aforementioned automatic pressurizing reverse osmosis system, the two-stage reverse osmosis membrane mechanism includes a two-stage reverse osmosis membrane tube, a second reverse osmosis membrane is arranged in the second-stage reverse osmosis membrane tube, a second liquid inlet and a second concentrated water outlet are arranged on one side of the second reverse osmosis membrane, a three-way joint is arranged on the rear side of the second concentrated water outlet, one end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism via a three-stage booster pump and a fifth automatic valve, and the other end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism via a fourth pressure transmitter, a third conductivity meter, a fourth automatic valve and a fifth pressure transmitter; a second liquid outlet connected to the reverse osmosis water production pipe is arranged on the other side of the second reverse osmosis membrane.

[0008] In the aforementioned automatic pressurizing reverse osmosis system, the three-stage reverse osmosis membrane mechanism includes three sections of reverse osmosis membrane tubes, a third reverse osmosis membrane is arranged in the three sections of reverse osmosis membrane tubes, a third liquid inlet and a third concentrated water outlet are arranged on one side of the third reverse osmosis membrane, a concentrated water discharge pipe with a regulating valve is arranged on the rear side of the third concentrated water outlet; a third liquid outlet connected to the reverse osmosis water production pipe is arranged on the other side of the third reverse osmosis membrane.

[0009] In the aforementioned automatic pressurized reverse osmosis system, the first reverse osmosis membrane is a tubular first reverse osmosis membrane, a water collecting pipe is provided in the first reverse osmosis membrane, and a flushing mechanism is provided in the water collecting pipe.

[0010] In the aforementioned automatic pressurized reverse osmosis system, the flushing mechanism includes a rotating tube arranged in the water collecting pipe, a spiral groove is provided on the surface of the rotating tube, a cleaning piece with a clamping block is provided outside the spiral groove, and a limit block is provided on the side of the cleaning piece away from the rotating tube.

[0011] In the aforementioned automatic pressurized reverse osmosis system, a guide groove corresponding to the limit block is provided in the water collecting pipe.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The present application detects the quality of incoming water through a first conductivity meter, and automatically adjusts the pressure according to the conductivity of the incoming water. When the conductivity of the incoming water is low, only the high-pressure pump is started to pressurize the incoming water once. Then, after passing through the secondary reverse osmosis membrane mechanism and the tertiary reverse osmosis membrane mechanism, the water pressure is small, and the secondary reverse osmosis membrane mechanism and the tertiary reverse osmosis membrane mechanism do not play a purification role; when the conductivity of the incoming water is high, the high-pressure pump and the second-stage booster pump are started to treat the incoming water twice; when the conductivity of the incoming water is extremely high, the high-pressure pump, the second-stage booster pump and the third-stage booster pump are all started to treat the incoming water three times, and the pressure is automatically adjusted to ensure that the reverse osmosis water production can reach the designed value, and the cleaning part can move stably through the cooperation of the spiral groove on the surface of the rotating tube and the block, firstly, the pressure on both sides of the first reverse osmosis membrane is balanced through pressure control, and then the pressure is changed through the movement of the cleaning part, so that impurities on the surface of the first reverse osmosis membrane fall off, thereby improving the water treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the first-level reverse osmosis membrane mechanism of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the two-stage reverse osmosis membrane mechanism of the utility model;

[0017] Figure 4 It is a structural schematic diagram of a three-stage reverse osmosis membrane mechanism of the utility model.

[0018] The markings in the accompanying drawings are: 1-high pressure pump, 2-first automatic valve, 3-first conductivity meter, 4-first pressure transmitter, 5-first reverse osmosis membrane mechanism, 6-second reverse osmosis membrane mechanism, 7-third reverse osmosis membrane mechanism, 8-sixth automatic valve, 9-reverse osmosis water production pipe, 10-reverse osmosis membrane tube, 11-first reverse osmosis membrane, 12-first liquid inlet, 13-first concentrated water outlet, 14-first liquid outlet, 15-second stage booster pump, 16-third automatic valve, 17-second pressure transmitter, 18-second conductivity meter, 19-second automatic valve, 20-third pressure transmitter, 21-second stage reverse osmosis membrane tube, 2 2-second reverse osmosis membrane, 23-second liquid inlet, 24-second concentrated water outlet, 26-three-stage booster pump, 27-fifth automatic valve, 28-fourth pressure transmitter, 29-third conductivity meter, 30-fourth automatic valve, 31-fifth pressure transmitter, 32-second liquid outlet, 34-three-stage reverse osmosis membrane tube, 35-third reverse osmosis membrane, 36-third liquid inlet, 37-third concentrated water outlet, 38-regulating valve, 39-concentrated water discharge pipe, 40-third liquid outlet, 41-water collecting pipe, 42-rotating pipe, 43-spiral groove, 44-cleaning part, 45-limiting block, 46-guide groove, 47-block. DETAILED DESCRIPTION

[0019] Embodiment. An automatic pressurized reverse osmosis system, comprising: Figure 1-4 As shown, it includes a high-pressure pump 1 connected to a water inlet, and a first automatic valve 2, a first conductivity meter 3, a first pressure transmitter 4, a first reverse osmosis membrane mechanism 5, a second reverse osmosis membrane mechanism 6 and a third reverse osmosis membrane mechanism 7 are sequentially arranged on the rear side of the high-pressure pump 1, and a reverse osmosis water production pipe 9 with a sixth automatic valve 8 is arranged on the water production side of the first reverse osmosis membrane mechanism 5, the second reverse osmosis membrane mechanism 6 and the third reverse osmosis membrane mechanism 7.

[0020] The primary reverse osmosis membrane mechanism 5 includes a reverse osmosis membrane tube 10, in which a first reverse osmosis membrane 11 is arranged, one side of the first reverse osmosis membrane 11 is provided with a first liquid inlet 12 and a first concentrated water outlet 13, a three-way joint is arranged on the rear side of the first concentrated water outlet 13, one end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism 6 via a second-stage booster pump 15 and a third automatic valve 16, and the other end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism 6 via a second pressure transmitter 17, a second conductivity meter 18, a second automatic valve 19 and a third pressure transmitter 20; the other side of the first reverse osmosis membrane 11 is provided with a first liquid outlet 14 connected to the reverse osmosis water production pipe 9.

[0021] The secondary reverse osmosis membrane mechanism 6 includes a two-stage reverse osmosis membrane tube 21, in which a second reverse osmosis membrane 22 is arranged, a second liquid inlet 23 and a second concentrated water outlet 24 are arranged on one side of the second reverse osmosis membrane 22, a three-way joint is arranged on the rear side of the second concentrated water outlet 24, one end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism 7 via a three-stage booster pump 26 and a fifth automatic valve 27, and the other end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism 7 via a fourth pressure transmitter 28, a third conductivity meter 29, a fourth automatic valve 30 and a fifth pressure transmitter 31; the other side of the second reverse osmosis membrane 22 is provided with a second liquid outlet 32 ​​connected to the reverse osmosis water production pipe 9.

[0022] The three-stage reverse osmosis membrane mechanism 7 includes three sections of reverse osmosis membrane tubes 34, in which a third reverse osmosis membrane 35 is arranged, a third liquid inlet 36 and a third concentrated water outlet 37 are arranged on one side of the third reverse osmosis membrane 35, and a concentrated water discharge pipe 39 with a regulating valve 38 is arranged on the rear side of the third concentrated water outlet 37; the other side of the third reverse osmosis membrane 35 is provided with a third liquid outlet 40 connected to the reverse osmosis water production pipe 9.

[0023] The first reverse osmosis membrane 11 is a tubular first reverse osmosis membrane. A water collecting pipe 41 is provided in the first reverse osmosis membrane 11 . A flushing mechanism is provided in the water collecting pipe 41 .

[0024] The flushing mechanism includes a rotating tube 42 arranged in a water collecting pipe 41 , a spiral groove 43 is provided on the surface of the rotating tube 42 , a cleaning member 44 with a clamping block 47 is provided outside the spiral groove 43 , and a limiting block 45 is provided on the side of the cleaning member 44 away from the rotating tube 42 .

[0025] The water collecting pipe 41 is provided with a guide groove 46 corresponding to the limiting block 45 .

[0026] The working principle of the utility model is that the pressure is adjusted by the conductivity of the incoming water. When the conductivity of the incoming water is small, the high-pressure pump 1 is used to increase the pressure so that the incoming water passes through the primary reverse osmosis membrane mechanism 5, so that the incoming water can be treated. The treated concentrated water is discharged through the first concentrated water outlet 13, and the reverse osmosis product water is discharged through the first liquid outlet 14. Then the second-stage booster pump 15 and the third automatic valve 16 are closed. If the pressure is insufficient, the incoming water cannot pass through the second reverse osmosis membrane 22 and is directly discharged from the second concentrated water outlet 24. Similarly, the concentrated water is directly discharged from the third concentrated water outlet 37. When the conductivity of the incoming water is slightly higher, the high-pressure pump 1 and the second-stage booster pump 15 are started. The high-pressure pump 1 is a variable frequency pump, and its head can be flexibly adjusted through the first transmitter 4 and the frequency converter to achieve the purpose of energy saving. The fourth automatic valve 30 is closed to allow the incoming water to undergo secondary treatment, and the fifth automatic valve 27 is closed to prevent the concentrated water pressure from being insufficient to penetrate the third reverse osmosis membrane 34, and to be directly discharged from the third concentrated water outlet 37, and finally discharged from the concentrated water discharge pipe 39; when the conductivity of the incoming water is extremely high, the high-pressure pump 1, the second-stage booster pump 15 and the third-stage booster pump 26 will all be started to allow the incoming water to undergo three reverse osmosis membrane treatments. During the treatment process, impurities will accumulate on the surface of the first reverse osmosis membrane 11, affecting the treatment effect of the incoming water. The present application can balance the pressure on both sides of the first reverse osmosis membrane 11 by opening and closing the valve, and then rotate the rotating tube 42. Due to the cooperation of the limit block 45 and the guide groove 46, the cleaning part 44 can only move axially. During the movement of the cleaning part 44, the water pressure will change, thereby removing impurities on the surface of the first reverse osmosis membrane 11, improving the treatment effect of the incoming water, and during the removal process, the water pressure change is stable and small, and will not cause damage to the surface of the first reverse osmosis membrane 11.

Claims

1. An automatic pressurized reverse osmosis system, characterized in that: The invention comprises a high-pressure pump (1) connected to a water inlet, wherein a first automatic valve (2), a first conductivity meter (3), a first pressure transmitter (4), a first reverse osmosis membrane mechanism (5), a second reverse osmosis membrane mechanism (6) and a third reverse osmosis membrane mechanism (7) are sequentially arranged on the rear side of the high-pressure pump (1), and a reverse osmosis water production pipe (9) with a sixth automatic valve (8) is arranged on the water production side of the first reverse osmosis membrane mechanism (5), the second reverse osmosis membrane mechanism (6) and the third reverse osmosis membrane mechanism (7).

2. The automatic pressurized reverse osmosis system according to claim 1, characterized in that: The primary reverse osmosis membrane mechanism (5) comprises a reverse osmosis membrane tube (10), a first reverse osmosis membrane (11) is arranged in the reverse osmosis membrane tube (10), a first liquid inlet (12) and a first concentrated water outlet (13) are arranged on one side of the first reverse osmosis membrane (11), a three-way joint is arranged on the rear side of the first concentrated water outlet (13), one end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism (6) via a two-stage booster pump (15) and a third automatic valve (16), and the other end of the three-way joint is connected to the secondary reverse osmosis membrane mechanism (6) via a second pressure transmitter (17), a second conductivity meter (18), a second automatic valve (19) and a third pressure transmitter (20); a first liquid outlet (14) connected to a reverse osmosis water production pipe (9) is arranged on the other side of the first reverse osmosis membrane (11).

3. The automatic pressurized reverse osmosis system according to claim 1, characterized in that: The two-stage reverse osmosis membrane mechanism (6) comprises a two-stage reverse osmosis membrane tube (21), a second reverse osmosis membrane (22) is arranged in the second-stage reverse osmosis membrane tube (21), a second liquid inlet (23) and a second concentrated water outlet (24) are arranged on one side of the second reverse osmosis membrane (22), a three-way joint is arranged on the rear side of the second concentrated water outlet (24), one end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism (7) via a three-stage booster pump (26) and a fifth automatic valve (27), and the other end of the three-way joint is connected to the three-stage reverse osmosis membrane mechanism (7) via a fourth pressure transmitter (28), a third conductivity meter (29), a fourth automatic valve (30) and a fifth pressure transmitter (31); and a second liquid outlet (32) connected to a reverse osmosis water production pipe (9) is arranged on the other side of the second reverse osmosis membrane (22).

4. The automatic pressurized reverse osmosis system according to claim 1, characterized in that: The three-stage reverse osmosis membrane mechanism (7) comprises three sections of reverse osmosis membrane tubes (34), a third reverse osmosis membrane (35) is arranged in the three sections of reverse osmosis membrane tubes (34), a third liquid inlet (36) and a third concentrated water outlet (37) are arranged on one side of the third reverse osmosis membrane (35), a concentrated water discharge pipe (39) with a regulating valve (38) is arranged on the rear side of the third concentrated water outlet (37); and a third liquid outlet (40) connected to the reverse osmosis water production pipe (9) is arranged on the other side of the third reverse osmosis membrane (35).

5. The automatic pressurized reverse osmosis system according to claim 2, characterized in that: The first reverse osmosis membrane (11) is a tubular first reverse osmosis membrane. A water collecting pipe (41) is provided in the first reverse osmosis membrane (11), and a flushing mechanism is provided in the water collecting pipe (41).

6. The automatic pressurized reverse osmosis system according to claim 5, characterized in that: The flushing mechanism comprises a rotating tube (42) arranged in a water collecting tube (41), a spiral groove (43) is arranged on the surface of the rotating tube (42), a cleaning member (44) with a clamping block (47) is arranged outside the spiral groove (43), and a limiting block (45) is arranged on the side of the cleaning member (44) away from the rotating tube (42).

7. The automatic pressurized reverse osmosis system according to claim 5, characterized in that: The water collecting pipe (41) is provided with a guide groove (46) corresponding to the limiting block (45).

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