A two-stage concentrate recovery unit based on high-concentration brine reverse osmosis

Abstract

This invention provides a two-stage reverse osmosis concentrate recovery device based on high-concentration brine. It includes at least one feed tank and one purified water tank, with several reverse osmosis pipes connected to the feed tank and purified water tank via flanges. A feed pipe is located at the bottom of the feed tank, and a high-pressure pump is fixedly connected to the feed pipe. A constant pressure pipe is fixedly connected to the bottom of the outer wall of the feed tank, and a pressure valve and a brine concentration sensor are installed on the constant pressure pipe. This invention uses the high-pressure pump to pump high-concentration brine from the feed pipe into the feed tank. The pressure valve monitors the pressure inside the feed tank. When the pressure reaches a threshold, the pressure valve opens to release pressure through the constant pressure pipe, maintaining a constant pressure inside the feed tank. The high-concentration brine inside the feed tank undergoes reverse osmosis through the several reverse osmosis pipes, and the permeated liquid is stored in the purified water tank. Simultaneously, the brine concentration is monitored by the brine concentration sensor.

Description

Technical Field

[0001] This utility model relates to the field of high-concentration brine treatment technology, and in particular to a reverse osmosis two-stage concentrate recovery device based on high-concentration brine. Background Technology

[0002] Traditionally, high-concentration brine is treated in stages using reverse osmosis equipment. However, if the brine concentration in the reverse osmosis equipment is too high and cannot be recovered in time, it will seriously affect the water treatment effect and efficiency. Therefore, it is necessary to provide a two-stage concentrate recovery device based on high-concentration brine. Utility Model Content

[0003] The purpose of this invention is to solve the problem that in the existing reverse osmosis two-stage concentrate recovery device based on high-concentration brine, water treatment is usually carried out in stages using reverse osmosis equipment. When the brine concentration in the reverse osmosis equipment is too high, if it cannot be recovered in time, it will seriously affect the water treatment effect and efficiency. Therefore, this invention proposes a reverse osmosis two-stage concentrate recovery device based on high-concentration brine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a two-stage reverse osmosis concentrate recovery device based on high-concentration brine, comprising a raw liquid tank, reverse osmosis pipes, a clear water tank, and a PLC controller. At least one raw liquid tank and one clear water tank are provided. Several reverse osmosis pipes are installed between the raw liquid tank and the clear water tank via flanges. A raw liquid pipe is provided at the bottom of the raw liquid tank. A high-pressure pump is fixedly connected to the raw liquid pipe. A constant pressure pipe is fixedly connected to the bottom of the outer wall of the raw liquid tank. A pressure valve and a brine concentration sensor are provided on the constant pressure pipe.

[0005] Furthermore, a reflux pipe is provided between the raw liquid pipe and the constant pressure pipe, and a second solenoid valve is provided on the reflux pipe. A first solenoid valve is provided at the outlet end of the constant pressure pipe.

[0006] Furthermore, a drain pipe is fixedly connected to the bottom of the water tank, and a pressure valve is installed on the drain pipe.

[0007] Furthermore, two liquid tanks are provided for both the raw liquid tank and the clean water tank, with the drain pipe of the first clean water tank connected to the end of the raw liquid pipe of the second raw liquid tank.

[0008] Furthermore, the flange surfaces at both ends of the reverse osmosis pipe are provided with annular sealing grooves, and sealing rings are nested inside the sealing grooves.

[0009] The beneficial effects of this utility model are as follows: The high-pressure pump pumps the high-concentration brine from the raw liquid pipe into the raw liquid tank. The pressure inside the raw liquid tank is monitored by a pressure valve. When the pressure reaches the threshold, the pressure valve opens to release the pressure in the raw liquid tank through the constant pressure pipe, so that the inside of the raw liquid tank always maintains a constant pressure. The high-concentration brine inside the raw liquid tank undergoes reverse osmosis through several reverse osmosis pipes. The permeated liquid is stored through a clear water tank. At the same time, the brine concentration is monitored by a brine concentration sensor.

[0010] When the saline concentration sensor monitors the saline concentration, if the saline concentration is not high, solenoid valve two opens and solenoid valve one closes. When the constant pressure tube is depressurized, the liquid inside the constant pressure tube is introduced into the original liquid tube for circulation and recovery through the return pipe. When the saline concentration sensor monitors the saline concentration, if the saline concentration is too high, solenoid valve two closes and solenoid valve one opens to drain the saline. Attached Figure Description

[0011] Figure 1 This is an isometric view of the entire utility model.

[0012] Figure 2 This is a cross-sectional view of the entire utility model;

[0013] In the diagram: raw material tank 1, raw material pipe 101, high pressure pump 111, constant pressure pipe 102, solenoid valve 121, brine concentration sensor 122, pressure valve 123, reflux pipe 103, solenoid valve 2 131, reverse osmosis pipe 2, clear water tank 3, drain pipe 301, pressure valve 2 311. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-2 A two-stage concentrated water recovery device based on high-concentration brine reverse osmosis includes a raw liquid tank 1, reverse osmosis pipes 2, a clear water tank 3, and a PLC controller. The device is characterized by: at least one raw liquid tank 1 and one clear water tank 3; several reverse osmosis pipes 2 are installed between the raw liquid tank 1 and the clear water tank via flanges; a raw liquid pipe 101 is located at the bottom of the raw liquid tank 1; a high-pressure pump 111 is fixedly connected to the raw liquid pipe 101; a constant pressure pipe 102 is fixedly connected to the bottom of the outer wall of the raw liquid tank 1; and a pressure valve 123 and a brine concentration sensor 122 are installed on the constant pressure pipe 102.

[0016] The raw material tank 1, reverse osmosis pipe 2, clear water tank 3, and PLC controller adopt existing technology.

[0017] In practice, the high-pressure pump 111 pumps the high-concentration brine from the raw liquid pipe 101 into the raw liquid tank 1. The pressure inside the raw liquid tank 1 is monitored by the pressure valve 123. When the pressure reaches the threshold, the pressure valve 123 opens to release the pressure in the raw liquid tank 1 through the constant pressure pipe 102, so that the raw liquid tank 1 always maintains a constant pressure. The high-concentration brine inside the raw liquid tank 1 undergoes reverse osmosis through several reverse osmosis pipes 2. The permeated liquid is stored in the clear water tank 3. At the same time, the brine concentration is monitored by the brine concentration sensor 122.

[0018] Furthermore, a return pipe 103 is provided between the raw liquid pipe 101 and the constant pressure pipe 102, and a solenoid valve 131 is provided on the return pipe 103. A solenoid valve 121 is provided at the outlet end of the constant pressure pipe 102.

[0019] In practical implementation, when the saline concentration sensor 122 monitors the saline concentration, if the saline concentration is not high, the second solenoid valve 131 opens and the first solenoid valve 121 closes. When the constant pressure tube 102 is depressurized, the liquid inside the constant pressure tube 102 is introduced into the original liquid tube 101 for circulation and recycling through the return tube 103.

[0020] When the saline concentration sensor 122 monitors the saline concentration, if the saline concentration is too high, the second solenoid valve 131 closes and the first solenoid valve 121 opens to drain the saline.

[0021] Furthermore, a drain pipe 301 is fixedly connected to the bottom of the water tank 3, and a pressure valve 311 is installed on the drain pipe 301.

[0022] In practice, the liquid inside the clean water tank 3 is discharged through the drain pipe 301, and the water pressure inside the clean water tank 3 is monitored by the pressure valve 311. When the water pressure reaches the threshold, the pressure valve 311 opens to discharge the liquid inside the clean water tank 3.

[0023] Furthermore, two of each are provided, namely, the drain pipe 301 of the first clear water tank 3 and the end of the raw liquid pipe 101 of the second raw liquid tank 1.

[0024] In practice, multi-stage reverse osmosis is carried out.

[0025] Furthermore, the flange surfaces at both ends of the reverse osmosis tube 2 are provided with annular sealing grooves, and sealing rings are nested inside the sealing grooves.

[0026] In practice, the sealing performance of the reverse osmosis pipe 2 when connected to the raw liquid tank 1 and the clear water tank 3 is improved by setting a sealing groove and a sealing ring.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A two-stage concentrated water recovery device based on high-concentration brine, comprising a raw material tank (1), a reverse osmosis pipe (2), a clear water tank (3), and a PLC controller, characterized in that: At least one raw liquid tank (1) and one clean water tank (3) are provided. Several reverse osmosis pipes (2) are installed between the raw liquid tank (1) and the clean water tank through a flange. A raw liquid pipe (101) is provided at the bottom of the raw liquid tank (1). A high-pressure pump (111) is fixedly connected to the raw liquid pipe (101). A constant pressure pipe (102) is fixedly connected to the bottom of the outer wall of the raw liquid tank (1). A pressure valve (123) and a brine concentration sensor (122) are provided on the constant pressure pipe (102).

2. The reverse osmosis two-stage concentrate recovery device based on high-concentration brine according to claim 1, characterized in that, A return pipe (103) is provided between the raw liquid pipe (101) and the constant pressure pipe (102). A second solenoid valve (131) is provided on the return pipe (103), and a first solenoid valve (121) is provided at the outlet end of the constant pressure pipe (102).

3. The reverse osmosis two-stage concentrate recovery device based on high-concentration brine according to claim 2, characterized in that, The bottom of the clean water tank (3) is fixedly connected to a drain pipe (301), and a pressure valve (311) is provided on the drain pipe (301).

4. The reverse osmosis two-stage concentrate recovery device based on high-concentration brine according to claim 3, characterized in that, Two raw liquid tanks (1) and two clean water tanks (3) are provided. The drain pipe (301) of the first clean water tank (3) is connected to the end of the raw liquid pipe (101) of the second raw liquid tank (1).

5. The reverse osmosis two-stage concentrate recovery device based on high-concentration brine according to claim 4, characterized in that, The flange surfaces at both ends of the reverse osmosis tube (2) are provided with annular sealing grooves, and sealing rings are nested inside the sealing grooves.

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