CN-224221116-U - On-line automatic cleaning device for ultrafiltration membrane group

CN224221116UCN 224221116 UCN224221116 UCN 224221116UCN-224221116-U

Abstract

The utility model discloses an on-line automatic cleaning device for an ultrafiltration membrane group, which comprises an ultrafiltration membrane group, wherein one end of the ultrafiltration membrane group is provided with a water inlet and a sewage outlet, the other end of the ultrafiltration membrane group is provided with a concentrated water outlet and a filtered water outlet, the water inlet is provided with a water inlet pipe, the water inlet pipe is provided with a water inlet pump and a water inlet valve, the sewage outlet is provided with a sewage pipe provided with a backwash discharge valve, the filtered water outlet is provided with a filtered water outlet pipe and a backwash water inlet pipe, the filtered water outlet pipe is provided with a chlorine removal component, the backwash water inlet pipe is provided with a backwash valve, the other end of the backwash water inlet pipe is connected with the water inlet pipe, the concentrated water outlet is provided with a concentrated water outlet pipe provided with a concentrated water drain valve, the other end of the concentrated water outlet pipe is connected with the sewage pipe, the air inlet pipe is provided with an air inlet valve, and the other end of the backwash water outlet pipe is connected with the sewage outlet. The utility model can wash out the pollutant deposited in the ultrafiltration membrane group with high efficiency, and effectively remove the chloride ions in the filtered water, and maintain the normal water production capacity of the ultrafiltration membrane group.

Inventors

ZHOU YIFU
ZHOU YI

Assignees

广州北辰机电设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250425

Claims (8)

1. The on-line automatic cleaning device for the ultrafiltration membrane group is characterized by comprising an ultrafiltration membrane group, wherein one end of the ultrafiltration membrane group is provided with a water inlet and a sewage outlet, and the other end of the ultrafiltration membrane group is provided with a concentrated water outlet and a filtered water outlet; A water inlet pipe connected with a clean water source is arranged on the water inlet, and a water inlet pump and a water inlet valve are arranged on the water inlet pipe; A drain pipe is arranged on the drain outlet, and a backwash discharge valve is arranged on the drain pipe; A filtered water outlet pipe and a backwashing water inlet pipe are arranged on the filtered water outlet, a water outlet valve is arranged on the filtered water outlet pipe, and a chlorine removal assembly for removing chloride ions in the filtered water is arranged on the filtered water outlet pipe; the connection point between the other end of the backwashing water inlet pipe and the water inlet pipe is positioned between the water inlet valve and the water inlet pump, and the backwashing water inlet pipe is provided with a backwashing valve; A concentrated water outlet pipe is arranged on the concentrated water outlet, a concentrated water drain valve is arranged on the concentrated water outlet pipe, and the connection point between the other end of the concentrated water outlet pipe and the drain pipe is positioned at one end of the backwash valve, which is far away from the drain outlet; the air inlet pipe is connected with a compressed air source, the connecting point of the other end of the air inlet pipe and the sewage drain pipe is positioned at one end of the backwash valve close to the sewage drain, and an air inlet valve is arranged on the air inlet pipe.
2. The on-line automatic cleaning device for the ultrafiltration membrane group according to claim 1, further comprising a control module, wherein the air inlet valve can be intermittently opened and closed under the control of the control module, so that compressed air in the compressed air source is intermittently blown into the ultrafiltration membrane group through the air inlet pipe.
3. The on-line automatic cleaning device for an ultrafiltration membrane group according to claim 1, wherein the chlorine removal assembly comprises a dosing tube, a dosing pump and an oxidizer dosing tank; the connecting point of the dosing pipe and the filtered water outlet pipe is positioned at one end of the water outlet valve, which is far away from the filtered water outlet, and the other end of the dosing pipe is connected with the oxidant medicine box.
4. An on-line automatic cleaning device for an ultrafiltration membrane group according to claim 3, wherein the dosing pump is a pulse pump.
5. The on-line automatic cleaning device for ultrafiltration membrane groups according to claim 1, wherein the pressure of the compressed air source is 0.15-0.25 mpa, and the fresh water inlet pressure is 0.25-0.4 mpa.
6. The on-line automatic cleaning device for ultrafiltration membrane modules according to claim 1, wherein the water inlet valve, the backwash discharge valve, the filtered water outlet valve, the backwash valve, the concentrate water drain valve and the air inlet valve are electromagnetic valves.
7. The on-line automatic cleaning device for ultrafiltration membrane modules according to claim 1, wherein the water inlet pipe, the air inlet pipe and the backwash water inlet pipe are provided with check valves.
8. The on-line automatic cleaning device for ultrafiltration membrane groups according to claim 1, wherein a pressure gauge is arranged on the water inlet pipe, and the water inlet pump is a variable frequency pump.

Description

On-line automatic cleaning device for ultrafiltration membrane group Technical Field The utility model relates to the technical field of filtration and cleaning, in particular to an on-line automatic cleaning device for an ultrafiltration membrane group. Background In a pure water system, when an ultrafiltration membrane group filters, colloid, suspended matters, macromolecular organic matters and other impurities in the inlet water are trapped on the surface of the membrane, the thickness of an impurity layer on the surface of the membrane increases along with the increase of the thickness of the overflow resistance, the transmembrane pressure difference increases along with the increase of the overflow resistance, when the transmembrane pressure difference increases to a certain degree, the fiber membrane needs to be cleaned, the excessive deposition of the pollutants on the fiber membrane is prevented, the normal water production capacity of the fiber membrane is maintained, and the surface of the membrane is polluted by various degrees in the material liquid filtering process, so that the membrane assembly needs to be cleaned. Therefore, in order to solve the above problems, it is needed to design an on-line automatic cleaning device for an ultrafiltration membrane set, which can automatically clean the ultrafiltration membrane set on line when a pure water system is stopped, efficiently wash out pollutants deposited in the ultrafiltration membrane set, effectively remove chloride ions in filtered water, avoid oxidation of RO membranes by the chloride ions, damage membrane structures, maintain normal water production capacity of the ultrafiltration membrane set, and prolong service life. Disclosure of utility model In order to solve the problems, the technical scheme adopted by the utility model is as follows: The on-line automatic cleaning device for the ultrafiltration membrane group is characterized by comprising an ultrafiltration membrane group, wherein one end of the ultrafiltration membrane group is provided with a water inlet and a sewage outlet, and the other end of the ultrafiltration membrane group is provided with a concentrated water outlet and a filtered water outlet; A water inlet pipe connected with a clean water source is arranged on the water inlet, and a water inlet pump and a water inlet valve are arranged on the water inlet pipe; A drain pipe is arranged on the drain outlet, and a backwash discharge valve is arranged on the drain pipe; A filtered water outlet pipe and a backwashing water inlet pipe are arranged on the filtered water outlet, a water outlet valve is arranged on the filtered water outlet pipe, and a chlorine removal assembly for removing chloride ions in the filtered water is arranged on the filtered water outlet pipe; the connection point between the other end of the backwashing water inlet pipe and the water inlet pipe is positioned between the water inlet valve and the water inlet pump, and the backwashing water inlet pipe is provided with a backwashing valve; A concentrated water outlet pipe is arranged on the concentrated water outlet, a concentrated water drain valve is arranged on the concentrated water outlet pipe, and the connection point between the other end of the concentrated water outlet pipe and the drain pipe is positioned at one end of the backwash valve, which is far away from the drain outlet; the air inlet pipe is connected with a compressed air source, the connecting point of the other end of the air inlet pipe and the sewage drain pipe is positioned at one end of the backwash valve close to the sewage drain, and an air inlet valve is arranged on the air inlet pipe. Preferably, the ultrafiltration membrane system further comprises a control module, wherein the air inlet valve can be intermittently opened and closed under the control of the control module, so that compressed air in the compressed air source intermittently blows air into the ultrafiltration membrane group through the air inlet pipe. Preferably, the chlorine removal assembly comprises a dosing tube, a dosing pump and an oxidant medicine box; the connecting point of the dosing pipe and the filtered water outlet pipe is positioned at one end of the water outlet valve, which is far away from the filtered water outlet, and the other end of the dosing pipe is connected with the oxidant medicine box. Preferably, the dosing pump is a pulse pump. Preferably, the pressure of the compressed air source is 0.15-0.25 mpa, and the fresh water inlet pressure is 0.25-0.4 mpa. Preferably, the water inlet valve, the backwashing discharge valve, the filtered water outlet valve, the backwashing valve, the concentrated water drain valve and the air inlet valve are electromagnetic valves. Preferably, the water inlet pipe, the air inlet pipe and the backwashing water inlet pipe are provided with one-way valves. Preferably, the water inlet pipe is provided with a pressure gauge, and the water inlet pump is a