CN-224212452-U - Small-flow reverse osmosis system

CN224212452UCN 224212452 UCN224212452 UCN 224212452UCN-224212452-U

Abstract

The application belongs to the technical field of water treatment and provides a low-flow reverse osmosis system which comprises a raw water end, a pure water end, a main pipeline, a water supply pump, a reverse osmosis module and a reverse osmosis module, wherein the raw water end is used for supplying raw water, the pure water end is used for flowing out filtered pure water, the two ends of the main pipeline are respectively communicated with the raw water end and the pure water end, the water supply pump is arranged on the main pipeline and is used for supplying power to pump the raw water into the main pipeline, the reverse osmosis module is arranged between the water supply pump and the pure water end and is used for filtering the raw water, one end of the return pipeline is communicated with the main pipeline, the other end of the return pipeline is communicated with the reverse osmosis module, and concentrated water generated by the reverse osmosis module is at least partially circulated and flows back to the main pipeline through the return pipeline and is converged with the raw water pumped by the water supply pump.

Inventors

HU PEIDE
HUANG FU
JIANG JIE

Assignees

麦博睿新材料科技(重庆)有限公司

Dates

Publication Date: 20260508
Application Date: 20250519

Claims (10)

1. A low flow reverse osmosis system comprising: A raw water end for supplying raw water; the pure water end is used for flowing out the filtered pure water; The two ends of the main pipeline are respectively communicated with the raw water end and the pure water end; The water supply pump is arranged on the main pipeline and is used for providing power to pump raw water into the main pipeline; The reverse osmosis module is arranged on the main pipeline and is positioned between the water supply pump and the pure water end and used for filtering raw water; And one end of the return pipeline is communicated with the main pipeline, the other end of the return pipeline is communicated with the reverse osmosis module, and concentrated water generated by the reverse osmosis module at least partially flows back to the main pipeline in a circulating way through the return pipeline and is converged with raw water pumped by the water supply pump.
2. The low flow reverse osmosis system of claim 1, further comprising a drain line in communication with the return line, one end of the drain line being connected to the return line and the other end being connected to the waste water end, at least a portion of the concentrate being drained through the drain line into the waste water end.
3. The low flow reverse osmosis system according to claim 2, wherein a drain regulator valve is provided on the drain line for controlling a drain flow of the drain line.
4. The small flow reverse osmosis system according to claim 1, wherein the return line is provided with a return flow regulating valve for controlling the flow of concentrate recirculated back to the main line.
5. The small-flow reverse osmosis system according to claim 1, wherein the main pipeline is further provided with a temperature control device, the temperature control device is located between the water supply pump and the reverse osmosis module, and the temperature control device is used for adjusting water temperature of water flowing to the reverse osmosis module.
6. The low flow reverse osmosis system of claim 5, wherein the end of the return line connected to the main line is located between the water supply pump and the temperature control device.
7. The low flow reverse osmosis system of claim 5, wherein the reverse osmosis module comprises a plurality of reverse osmosis membranes.
8. The low flow reverse osmosis system of claim 5, wherein a side of the reverse osmosis module adjacent to the raw water end is a water inlet side and a side of the reverse osmosis module adjacent to the raw water end is a water outlet side.
9. The small flow reverse osmosis system according to claim 8, wherein a booster pump is further provided on the main pipe, the booster pump being located between the temperature control device and the reverse osmosis module, the booster pump being configured to boost the flow of water flowing into the water inlet side.
10. The low flow reverse osmosis system of claim 9, wherein the booster pump is a high pressure circulation pump.

Description

Small-flow reverse osmosis system Technical Field The application relates to the technical field of water treatment, in particular to a low-flow reverse osmosis system. Background The reverse osmosis system is mainly characterized in that a reverse osmosis membrane filters raw water under the action of water pressure to generate a certain amount of pure water, and the other part of water is changed into concentrated water to be discharged, the principle is that other substances can not permeate the semi-permeable membrane to separate the substances from water under the action of higher than the osmotic pressure of the solution, because of the characteristics of reverse osmosis, the water yield of a single reverse osmosis membrane has a certain limit value, and under the condition of smaller water supply flow, the water yield is limited, so that the water yield of the whole system is affected. Disclosure of utility model In view of the above drawbacks of the prior art, an object of the present application is to provide a low-flow reverse osmosis system for solving the problem that the water yield is limited in the prior art under the condition of low water supply flow rate. To achieve the above and other related objects, the present application provides a low flow reverse osmosis system comprising: A raw water end for supplying raw water; the pure water end is used for flowing out the filtered pure water; The two ends of the main pipeline are respectively communicated with the raw water end and the pure water end; The water supply pump is arranged on the main pipeline and is used for providing power to pump raw water into the main pipeline; The reverse osmosis module is arranged on the main pipeline and is positioned between the water supply pump and the pure water end and used for filtering raw water; And one end of the return pipeline is communicated with the main pipeline, the other end of the return pipeline is communicated with the reverse osmosis module, and concentrated water generated by the reverse osmosis module at least partially flows back to the main pipeline in a circulating way through the return pipeline and is converged with raw water pumped by the water supply pump. Optionally, the low-flow reverse osmosis system further comprises a drainage pipeline communicated with the return pipeline, one end of the drainage pipeline is connected to the return pipeline, the other end of the drainage pipeline is connected with the waste water end, and at least part of concentrated water is discharged into the waste water end through the drainage pipeline. Optionally, a drainage regulating valve is arranged on the drainage pipeline and used for controlling drainage flow of the drainage pipeline. Optionally, a reflux regulating valve is arranged on the reflux pipeline and used for controlling the flow of the concentrate circulated and refluxed to the main pipeline. Optionally, the main pipeline is further provided with a temperature control device, the temperature control device is located between the water supply pump and the reverse osmosis module, and the temperature control device is used for adjusting the water temperature of water flow flowing to the reverse osmosis module. Optionally, an end of the return line connected to the main line is located between the water supply pump and the temperature control device. Optionally, the reverse osmosis module comprises a plurality of reverse osmosis membranes. Optionally, a side of the reverse osmosis module close to the raw water end is a water inlet side, and a side of the reverse osmosis module close to the raw water end is a water outlet side. Optionally, still be provided with the booster pump on the main pipe, the booster pump is located temperature control device with reverse osmosis module is between, the booster pump is used for flowing in the rivers of intake side are pressurized. Optionally, the booster pump is a high-pressure circulating pump. In the small-flow reverse osmosis system provided by the application, for the condition of smaller water supply flow, part of concentrated water is returned to the main pipeline through the return pipeline, so that the concentrated water is mixed with raw water, the returned concentrated water can be reused, the water supply flow is increased, the water supply quantity of the reverse osmosis module is increased, the water yield is increased, and the water yield of the whole system is improved. Drawings Fig. 1 is a schematic structural diagram of a low-flow reverse osmosis system according to an embodiment of the present application. Description of the part reference numerals 1-Raw water end, 2-water supply pump, 3-temperature control device, 4-booster pump, 5-reverse osmosis module, 6-pure water end, 7-waste water end, 8-drainage regulating valve, 9-reflux regulating valve, 10-main pipeline, 11-reflux pipeline and 12-drainage pipeline. Detailed Description Further advantages and effects of the present appli