Reverse osmosis produced water pH regulation and control device

Abstract

The utility model discloses a reverse osmosis produced water pH regulation and control device which comprises an L-shaped water flow channel, the top of the L-shaped water flow channel is fixedly connected with an alkaline solution storage box, a first stirring assembly is installed on the alkaline solution storage box, the alkaline solution storage box is connected with an alkaline solution leading-in pump through a pipeline, and a second stirring assembly is installed on the alkaline solution leading-in pump. An outlet of the alkali solution leading-in pump is connected with a dispersion pipe set through a liquid inlet pipe, the dispersion pipe set is arranged in the L-shaped water flow channel, an alkali solution one-way outlet is formed in the dispersion pipe set, a second stirring assembly is arranged on the left side of the dispersion pipe set, and a water flow inlet is formed in the right end of the L-shaped water flow channel. A first pH online detection mechanism is installed at the position, close to the water flow inlet, of the L-shaped water flow channel, a water flow outlet is formed in the bottom end of the L-shaped water flow channel, an alkali solution is dispersed into multiple strands of trickles to be guided into water, then stirring is conducted, the alkali solution and the passing water are fully mixed, deviation of pH value detection is avoided, and the putting amount of the alkali solution can be controlled easily.

Description

Technical Field

[0001] The utility model relates to the technical field of reclaimed water treatment, in particular to a reverse osmosis water production pH control device. Background Art

[0002] Reverse osmosis is a key treatment technology in the process of recycled water reuse. After the raw water is treated with reverse osmosis, the pH of the produced water will often decrease by 1-2. The pH of the reverse osmosis produced water is generally low and acidic. For systems with high raw water alkalinity, the pH of the reverse osmosis produced water decreases more and may be lower than 5. If the pH is not adjusted, the pH of the reverse osmosis produced water is low and cannot be directly reused in production. At the same time, it will cause corrosion to the water supply pipeline and water pump, affect the service life of the water supply equipment, and cause secondary pollution of the recycled water.

[0003] Chinese patent application number 202022524299.4 discloses a reverse osmosis water production pH precision control system, which adopts a decarbonizer combined with an automatic alkali addition system and is equipped with a pH online detection device to achieve precise control of the pH of reverse osmosis water production, minimize the impact on the water quality of reverse osmosis water production, and ensure the stability of the pH of recycled water. However, the reverse osmosis water production pH precision control system has the following shortcomings: the alkali addition pump directly introduces the alkali solution into the reverse osmosis water production tank, so that the alkali solution cannot be fully mixed with water. When passing through the second pH online detection device, it will cause detection deviations, which is not conducive to the metered addition of the alkali solution.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a reverse osmosis water production pH control device to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A reverse osmosis water production pH control device comprises an L-shaped water flow channel, an alkaline solution storage box is fixedly connected to the top of the L-shaped water flow channel, a first stirring component is installed on the alkaline solution storage box, the alkaline solution storage box is connected to an alkaline solution introduction pump through a pipeline, the outlet of the alkaline solution introduction pump is connected to a dispersion pipe group through a liquid inlet pipe, the dispersion pipe group is arranged in the L-shaped water flow channel, a one-way outlet of the alkaline solution is installed on the dispersion pipe group, a second stirring component is arranged on the left side of the dispersion pipe group, a water flow inlet is arranged at the right end of the L-shaped water flow channel, a first pH online detection mechanism is installed on the L-shaped water flow channel near the water flow inlet, a water flow outlet is arranged at the bottom of the L-shaped water flow channel, and a second pH online detection mechanism is installed on the L-shaped water flow channel near the water flow outlet.

[0008] Preferably, a liquid level window is provided on the side of the alkaline solution storage tank.

[0009] Preferably, a loading port is provided on the top of the alkaline solution storage tank.

[0010] Preferably, the dispersion tube group is composed of a square tube, a connecting tube and a vertical tube. The square tubes are connected by the connecting tube. The vertical tube is arranged on the inner side of the innermost square tube. The one-way outlet of the alkaline solution is respectively arranged on the square tube and the vertical tube.

[0011] Preferably, the first stirring assembly and the second stirring assembly are both composed of a driving motor, a central axis rod, and a stirring rod. The output end of the driving motor is connected to the central axis rod, and the central axis rod is fixedly connected to the stirring rod.

[0012] Preferably, a metering valve is installed on the liquid inlet pipe.

[0013] Preferably, the first pH online detection mechanism and the second pH online detection mechanism are both composed of a transmitter, a bracket, and a pH probe, and the transmitter is connected to the pH probe via the bracket.

[0014] The beneficial effects of the utility model are as follows: the utility model has a simple structure and a reasonable design, and is provided with a dispersion tube group and a second stirring component, so that the alkaline solution is dispersed into multiple thin streams and introduced into water, and then stirred, so that the alkaline solution is fully mixed with the passing water, avoiding deviations in pH value detection, which is beneficial to controlling the amount of alkaline solution added. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a reverse osmosis water production pH control device according to an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of an L-shaped water flow channel of a reverse osmosis water production pH control device according to an embodiment of the utility model;

[0018] Figure 3 It is a structural diagram of a dispersion pipe group of a reverse osmosis water production pH control device according to an embodiment of the utility model;

[0019] Figure 4It is a structural diagram of a second stirring component of a reverse osmosis water production pH control device according to an embodiment of the utility model;

[0020] Figure 5 It is a structural diagram of a first pH online detection mechanism of a reverse osmosis water production pH control device according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. L-shaped water flow channel; 2. Alkali solution storage box; 3. First stirring component; 4. Alkali solution introduction pump; 5. Liquid inlet pipe; 6. Dispersion pipe group; 7. Alkaline solution one-way outlet; 8. Second stirring component; 9. Water flow inlet; 10. First pH online detection mechanism; 11. Water flow outlet; 12. Second pH online detection mechanism; 13. Liquid level window; 14. Inlet; 15. Square tube; 16. Connecting tube; 17. Vertical tube; 18. Driving motor; 19. Central axis rod; 20. Stirring rod; 21. Metering valve; 22. Transmitter; 23. Bracket; 24. pH probe. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, a reverse osmosis water production pH control device is provided. Example

[0025] like Figure 1- 5, according to an embodiment of the utility model, a reverse osmosis water production pH control device comprises an L-shaped water flow channel 1, an alkaline solution storage box 2 is fixedly connected to the top of the L-shaped water flow channel 1, a first stirring component 3 is installed on the alkaline solution storage box 2, the alkaline solution storage box 2 is connected to an alkaline solution introduction pump 4 through a pipeline, the outlet of the alkaline solution introduction pump 4 is connected to a dispersion pipe group 6 through a liquid inlet pipe 5, the dispersion pipe group 6 is arranged in the L-shaped water flow channel 1, an alkaline solution one-way outlet 7 is installed on the dispersion pipe group 6, a second stirring component 8 is arranged on the left side of the dispersion pipe group 6, a water flow inlet 9 is arranged at the right end of the L-shaped water flow channel 1, a first pH online detection mechanism 10 is installed on the L-shaped water flow channel 1 near the water flow inlet 9, a water flow outlet 11 is arranged at the bottom end of the L-shaped water flow channel 1, and a second pH online detection mechanism 12 is installed on the L-shaped water flow channel 1 near the water flow outlet 11, the alkaline solution is dispersed into a plurality of thin streams and introduced into the water, and then stirred, so that the alkaline solution is fully mixed with the passing water, so as to avoid deviation in pH value detection, which is beneficial to control the amount of alkaline solution added. Example

[0026] like Figure 1 - 5, according to an embodiment of the utility model, a reverse osmosis water production pH control device comprises an L-shaped water flow channel 1, an alkaline solution storage box 2 is fixedly connected to the top of the L-shaped water flow channel 1, a first stirring component 3 is installed on the alkaline solution storage box 2, the alkaline solution storage box 2 is connected to an alkaline solution introduction pump 4 through a pipeline, the outlet of the alkaline solution introduction pump 4 is connected to a dispersion pipe group 6 through a liquid inlet pipe 5, the dispersion pipe group 6 is arranged in the L-shaped water flow channel 1, an alkaline solution one-way outlet 7 is installed on the dispersion pipe group 6, a second stirring component 8 is arranged on the left side of the dispersion pipe group 6, a water flow inlet 9 is arranged at the right end of the L-shaped water flow channel 1, a first pH online detection mechanism 10 is installed on the L-shaped water flow channel 1 near the water flow inlet 9, a water flow outlet 11 is arranged at the bottom end of the L-shaped water flow channel 1, a second pH online detection mechanism 12 is installed on the L-shaped water flow channel 1 near the water flow outlet 11, a liquid level window 13 is arranged on the side of the alkaline solution storage box 2, a delivery port 14 is arranged on the top of the alkaline solution storage box 2, and a metering valve 21 is installed on the liquid inlet pipe 5. Example

[0027] like Figure 1- 5, according to an embodiment of the utility model, a reverse osmosis water production pH control device comprises an L-shaped water flow channel 1, characterized in that an alkaline solution storage box 2 is fixedly connected to the top of the L-shaped water flow channel 1, a first stirring component 3 is installed on the alkaline solution storage box 2, the alkaline solution storage box 2 is connected to an alkaline solution introduction pump 4 through a pipeline, the outlet of the alkaline solution introduction pump 4 is connected to a dispersion pipe group 6 through a liquid inlet pipe 5, the dispersion pipe group 6 is arranged in the L-shaped water flow channel 1, a one-way alkaline solution outlet 7 is installed on the dispersion pipe group 6, a second stirring component 8 is arranged on the left side of the dispersion pipe group 6, a water flow inlet 9 is arranged at the right end of the L-shaped water flow channel 1, a first pH online detection mechanism 10 is installed on the L-shaped water flow channel 1 near the water flow inlet 9, a water flow outlet 11 is arranged at the bottom of the L-shaped water flow channel 1, and the L A second pH online detection mechanism 12 is installed near the water outlet 11 on the water flow channel 1, the dispersion tube group 6 is composed of a square tube 15, a connecting tube 16, and a vertical tube 17, the square tubes 15 are connected by the connecting tube 16, the vertical tube 17 is arranged on the inner side of the innermost square tube 15, the alkaline solution one-way outlet 7 is respectively arranged on the square tube 15 and the vertical tube 17, the first stirring component 3 and the second stirring component 8 are both composed of a driving motor 18, a central axis rod 19, and a stirring rod 20, the output end of the driving motor 18 is connected to the central axis rod 19, and the central axis rod 19 is fixedly connected to the stirring rod 20, the first pH online detection mechanism 10 and the second pH online detection mechanism 12 are both composed of a transmitter 22, a bracket 23, and a pH probe 24, and the transmitter 22 is connected to the pH probe 24 through the bracket 23.

[0028] In summary, with the aid of the above technical solution of the utility model, when the device is in use, water enters the L-shaped water flow channel 1 from the water flow inlet 9 and is discharged from the water flow outlet 11, the alkaline solution introduction pump 4 is started, the alkaline solution is dispersed into multiple thin streams and introduced into the water, the drive motor 18 is started, and the stirring rod 20 stirs to fully mix the alkaline solution with the water.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reverse osmosis water production pH control device, comprising an L-shaped water flow channel (1), characterized in that: The top of the L-shaped water flow channel (1) is fixedly connected to an alkaline solution storage box (2), a first stirring assembly (3) is installed on the alkaline solution storage box (2), the alkaline solution storage box (2) is connected to an alkaline solution introduction pump (4) through a pipeline, the outlet of the alkaline solution introduction pump (4) is connected to a dispersion pipe group (6) through a liquid inlet pipe (5), the dispersion pipe group (6) is arranged in the L-shaped water flow channel (1), an alkaline solution one-way outlet (7) is installed on the dispersion pipe group (6), a second stirring assembly (8) is arranged on the left side of the dispersion pipe group (6), a water flow inlet (9) is arranged at the right end of the L-shaped water flow channel (1), a first pH online detection mechanism (10) is installed on the L-shaped water flow channel (1) near the water flow inlet (9), a water flow outlet (11) is arranged at the bottom end of the L-shaped water flow channel (1), and a second pH online detection mechanism (12) is installed on the L-shaped water flow channel (1) near the water flow outlet (11).

2. A reverse osmosis water production pH control device according to claim 1, characterized in that: A liquid level window (13) is provided on the side of the alkaline solution storage box (2).

3. A reverse osmosis water production pH control device according to claim 2, characterized in that: The top of the alkaline solution storage box (2) is provided with a delivery port (14).

4. A reverse osmosis water production pH control device according to claim 3, characterized in that: The dispersion tube group (6) is composed of a square tube (15), a connecting tube (16), and a vertical tube (17); the square tubes (15) are connected to each other via the connecting tube (16); the vertical tube (17) is arranged on the inner side of the innermost square tube (15); and the alkaline solution one-way outlet (7) is respectively arranged on the square tube (15) and the vertical tube (17).

5. A reverse osmosis water production pH control device according to claim 4, characterized in that: The first stirring assembly (3) and the second stirring assembly (8) are both composed of a driving motor (18), a central axis rod (19), and a stirring rod (20); the output end of the driving motor (18) is connected to the central axis rod (19), and the central axis rod (19) is fixedly connected to the stirring rod (20).

6. A reverse osmosis water production pH control device according to claim 5, characterized in that: A metering valve (21) is installed on the liquid inlet pipe (5).

7. A reverse osmosis water production pH control device according to claim 6, characterized in that: The first pH online detection mechanism (10) and the second pH online detection mechanism (12) are both composed of a transmitter (22), a bracket (23), and a pH probe (24); the transmitter (22) is connected to the pH probe (24) via the bracket (23).

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