Reverse osmosis system with circulation cup

Abstract

The utility model discloses a reverse osmosis system with a circulation cup, and aims to provide the reverse osmosis system with the circulation cup, which is convenient to maintain and repair, and adopts the technical scheme that the reverse osmosis system comprises a raw water tank, and is characterized in that a multi-medium filter is connected onto the raw water tank, and a high-pressure pump is arranged at an outlet of the multi-medium filter; an outlet of the high-pressure pump is connected with a reverse osmosis machine, an outlet of the reverse osmosis machine is provided with a pipeline mixer, an outlet of the pipeline mixer is connected with a circulation cup, the outlet of the pipeline mixer is further connected with a water production pipe, and an outlet of the water production pipe is provided with a pure water tank.

Description

Technical Field

[0001] The utility model relates to the field of reverse osmosis equipment, in particular to a reverse osmosis system with a circulation cup. Background Art

[0002] Reverse osmosis system, reverse osmosis desalination system consists of RO membrane assembly device, high-pressure pump, chemical cleaning device, control and instrumentation. The high-pressure pump provides a certain pressure and flow to enter the reverse osmosis membrane stack, and the permeate (i.e. the final produced water) after the reverse osmosis membrane intercepts various organic matter and salts naturally flows into the pure water tank. The RO membrane assembly is installed on the combination frame, which is equipped with all pipeline valves and joints, as well as all brackets, fasteners, clamps and other accessories. The high-pressure pipe is made of stainless steel, and the low-pressure pipe is made of UPVC. Sampling points are set on the product water pipe and the concentrated water pipe of the RO device. The number and location of the sampling points can effectively diagnose and determine the operating status of the system.

[0003] At present, a Chinese patent with publication number CN103645137A discloses a defoaming turbidity circulation cup, which has a cup body and a cup cover, wherein the interior of the cup body is divided into a water inlet chamber, a defoaming water channel and a sampling pool, wherein the water inlet chamber and the sampling pool are connected through the defoaming water channel; a water inlet is opened at the lower part of the water inlet chamber, and the water inlet is a small vortex water inlet, so that the water flow enters the water inlet chamber and flows in a spiral manner, reducing the generation of bubbles. The water inlet chamber is connected to the upper part of one end of the defoaming water channel, and the other end of the defoaming water channel is connected to the lower part of the sampling pool, and a water outlet is opened at the bottom of the sampling pool; a sensor interface is opened on the cup cover.

[0004] Although the sensor interface of this defoaming turbidity circulation cup is located above the sampling pool, the sensor interface is equipped with a cylinder with an oblique angle between it and the sampling pool, which is used to insert the corresponding sensor at an oblique angle relative to the sampling pool. The oblique angle insertion of the sensor can also reduce the contact of the detector with bubbles, but the pH value of the produced water often drops during the reverse osmosis water production process, so it needs to be adjusted at any time. Summary of the invention

[0005] One object of the utility model is to provide a reverse osmosis system with a circulation cup, which has the advantage of being convenient for effectively monitoring the pH value.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A reverse osmosis system with a circulation cup comprises a raw water tank, a multi-media filter is connected to the raw water tank, a high-pressure pump is provided at the outlet of the multi-media filter, a reverse osmosis machine is connected to the outlet of the high-pressure pump, a pipeline mixer is provided at the outlet of the reverse osmosis machine, a circulation cup is connected to the outlet of the pipeline mixer, a water production pipe is also connected to the outlet of the pipeline mixer, and a pure water tank is provided at the outlet of the water production pipe

[0008] Further configuration: a booster pump is provided between the raw water tank and the multi-media filter.

[0009] Further configuration: a safety filter is provided between the multi-media filter and the high-pressure pump.

[0010] Further configuration: a water outlet is also provided at the bottom of the pure water tank, and a water supply pump is connected to the water outlet.

[0011] Further configuration: the raw water tank, the multi-media filter, the buffer tank and the pure water tank are all provided with drainage outlets at the bottom.

[0012] Further configuration: the pipeline mixer is also provided with a dosing device, the dosing device comprises an alkali dosing box connected to the pipeline mixer, and a adding and subtracting pump is also provided between the pipeline mixer and the alkali dosing box.

[0013] Further configuration: a concentrated water discharge port is also provided at the outlet of the reverse osmosis machine.

[0014] In summary, the utility model has the following beneficial effects: when the reverse osmosis system is running and producing water, the main pipe pH meter starts to add alkali to increase the pH value when it is lower than the set value of 6.8 according to the PLC program setting, and stops adding alkali when the produced water is higher than 7.3. Generally, the main pipeline is thicker and the design installation position is higher. It is not convenient to install the pH probe on the main pipe for daily cleaning, maintenance and regular calibration. At this time, a small pipeline is opened at the bottom of the main pipeline to introduce the produced water into the circulation cup, and the pH probe can be installed in the circulation cup. The circulation cup can be installed in a place that is convenient for maintenance and repair to solve daily maintenance and calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of a reverse osmosis system with a circulation cup.

[0017] In the figure, 1. raw water tank; 2. multi-media filter; 3. high-pressure pump; 4. reverse osmosis machine; 5. pipeline mixer; 6. circulation cup; 7. water production pipe; 8. pure water tank; 9. booster pump; 10. safety filter; 11. water outlet; 12. water supply pump; 13. drain outlet; 14. dosing device; 141. alkali dosing box; 142. adding and subtracting pump; 15. concentrated water discharge outlet. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0019] The technical solution adopted by the utility model is: a reverse osmosis system with a circulation cup, such as Figure 1As shown, it includes a raw water tank 1, a multi-media filter 2 is connected to the raw water tank 1, a booster pump 9 is arranged between the raw water tank 1 and the multi-media filter 2, a high-pressure pump 3 is arranged at the outlet of the multi-media filter 2, a security filter 10 is arranged between the multi-media filter 2 and the high-pressure pump 3, a reverse osmosis machine 4 is connected to the outlet of the high-pressure pump 3, a pipeline mixer 5 is arranged at the outlet of the reverse osmosis machine 4, a concentrated water discharge port 15 is arranged at the outlet of the reverse osmosis machine 4, a circulation cup 6 is connected to the outlet of the pipeline mixer 5, and the outlet of the pipeline mixer 5 The outlet is also connected to a water production pipe 7, and a pure water tank 8 is provided at the outlet of the water production pipe 7. A water outlet 11 is also provided at the bottom of the pure water tank 8, and a water supply pump 12 is connected to the water outlet 11. The raw water tank 1, the multi-media filter 2, the security filter 10 and the bottom of the pure water tank 8 all have a drain outlet 13. The pipeline mixer 5 is also provided with a dosing device 14, which includes an alkali dosing box 141 connected to the pipeline mixer 5, and an adding and subtracting pump 142 is also provided between the pipeline mixer 5 and the alkali dosing box 141.

[0020] Its main working principle is as follows: The pH value of the produced water will drop during the reverse osmosis water production process. The main reasons are:

[0021] 1. The anion adsorption performance of the reverse osmosis membrane leads to an increase in the concentration of hydrogen ions, thereby reducing the pH value. 2. Dissolved gases, such as carbon dioxide, will react with hydrogen ions in water to form carbonic acid, further reducing the pH value. 3. Silicates and chemical agents, such as acid and alkali substances, may also react with hydrogen ions in water, affecting the pH value. 4. Operating parameters, such as increased temperature, will accelerate the release of dissolved gases, thereby reducing the pH value. 5. The RO reverse osmosis system cannot remove soluble gases, resulting in the CO2 content in the produced water being basically the same as the CO2 content in the RO inlet water, thereby breaking the balance between CO2, HCO3- and CO3= in the inlet water, resulting in a decrease in pH value. 6. The bicarbonate in the reverse osmosis concentrated water is concentrated 3-4 times, and is mostly in a saturated state, which increases the CO2 concentration and reduces the pH value. After purification by the reverse osmosis membrane, the number of substances such as calcium and magnesium ions in the water decreases, while the solubility of CO increases, which eventually causes a slight decrease in pH value. At this time, a dosing device 14 is added to the pipeline mixer 5, and pure alkali solution is added through the addition and subtraction pump 142 to increase the pH value to neutral for use. When the branches of the reverse osmosis water production are collected and the branches of the water production sections are collected, they enter the main pipe, and a pH controller is added to the main pipe. Therefore, the produced water needs to be neutralized to reach a neutral pH of about 7 before it can be reused. At this time, acid needs to be added for neutralization and adjustment. The pH meter starts to add alkali to increase the pH value when it is lower than the set value of 6.8 according to the PLC program setting, and stops adding alkali when the produced water is higher than 7.3. Generally, the main pipeline is thicker and the design installation position is elevated. It is not convenient to install the pH probe on the main pipe for daily cleaning, maintenance and regular calibration. At this time, a circulation cup 6 is connected to the outlet of the pipeline mixer 5, and the produced water is introduced into the circulation cup 6. The pH probe can be installed in the circulation cup 6, which can be convenient for maintenance and repair. Daily maintenance and calibration can be solved.

[0022] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the utility model.

Claims

1. A reverse osmosis system with a flow-through cup, comprising a raw water tank (1), characterized in that: The raw water tank (1) is connected to a multi-media filter (2), the outlet of the multi-media filter (2) is provided with a high-pressure pump (3), the outlet of the high-pressure pump (3) is connected to a reverse osmosis machine (4), the outlet of the reverse osmosis machine (4) is provided with a pipeline mixer (5), the outlet of the pipeline mixer (5) is connected to a circulation cup (6), the outlet of the pipeline mixer (5) is also connected to a water production pipe (7), and the outlet of the water production pipe (7) is provided with a pure water tank (8).

2. A reverse osmosis system with a flow-through cup according to claim 1, characterized in that: A booster pump (9) is provided between the raw water tank (1) and the multi-media filter (2).

3. A reverse osmosis system with a flow-through cup according to claim 2, characterized in that: A safety filter (10) is also provided between the multi-media filter (2) and the high-pressure pump (3).

4. A reverse osmosis system with a flow-through cup according to claim 3, characterized in that: The bottom of the pure water tank (8) is also provided with a water outlet (11), and the water outlet (11) is connected to a water supply pump (12).

5. A reverse osmosis system with a flow-through cup according to claim 4, characterized in that: The raw water tank (1), the multi-media filter (2), the security filter (10) and the pure water tank (8) all have drainage outlets (13) at the bottom.

6. A reverse osmosis system with a flow-through cup according to claim 5, characterized in that: The pipeline mixer (5) is also provided with a dosing device (14), the dosing device (14) comprising an alkali dosing box (141) connected to the pipeline mixer (5), and a dosing pump (142) is also provided between the pipeline mixer (5) and the alkali dosing box (141).

7. A reverse osmosis system with a flow-through cup according to claim 6, characterized in that: The reverse osmosis machine (4) is also provided with a concentrated water discharge port (15) at its outlet.

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