CN212024851U

CN212024851U - Water filtering device

Info

Publication number: CN212024851U
Application number: CN202020437616.6U
Authority: CN
Inventors: 杨天舜; 张锦泽; 董晓克
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-11-27
Anticipated expiration: 2030-03-30

Abstract

The embodiment of the utility model provides a water filtering device, which comprises a shell, a main filtering membrane and an outlet filtering membrane, wherein the main filtering membrane is arranged in the shell; one end of the shell is a purified water outlet end, the other end of the shell is an air inlet end, a concentrated water outlet is formed in the side portion, close to the purified water outlet end, of the shell, and a water inlet and a purified water inlet are formed in the side portion, close to the air inlet end, of the shell; the outlet filter membrane is arranged at the purified water outlet end of the shell and is detachably connected with the shell. The utility model discloses water filter equipment adds at the water purification exit end and establishes detachable outlet filter membrane, improves water filter effect, can dismantle the washing with outlet filter membrane during the washing, improves the cleaning efficiency. The air inlet and the water purification inlet are arranged, so that the cleaning can be carried out by combining water and air, and the cleaning effect is good. Set up the water purification import alone for input water purification washs, compares in using water inlet input water purification, can not bring into the pollutant of water inlet department and influence the cleaning performance, and the cleaning performance is good.

Description

Water filtering device

Technical Field

The utility model relates to a water treatment technical field particularly, relates to a water filter equipment.

Background

Membrane filtration belongs to solid-state separation technology and is widely applied to the field of water treatment. The membrane filtration is to intercept impurities in water by using membrane pores and filter to obtain purified water. However, in the process of using the filter, the problems of membrane pollution or membrane hole blockage and the like of different degrees can occur, so that the water filtering quality and efficiency are reduced, and the service life of the filter device is shortened.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the water filtering device is provided, the cleaning effect is improved, and the water filtering efficiency is improved.

In order to solve the technical problem, an embodiment of the present invention provides a water filtering device, which includes a housing, a main filtering membrane and an outlet filtering membrane, wherein the main filtering membrane is disposed in the housing; one end of the shell is a purified water outlet end, the other end of the shell is an air inlet end, a concentrated water outlet is formed in the side portion, close to the purified water outlet end, of the shell, and a water inlet and a purified water inlet are formed in the side portion, close to the air inlet end, of the shell; the outlet filter membrane is arranged at the purified water outlet end of the shell and is detachably connected with the shell.

Furthermore, an end cover is arranged at the purified water outlet end of the shell, the end cover is in threaded connection with the shell, the outlet filter membrane is fixed on the end cover, and a water outlet is formed in the end cover.

Further, the main filtering membrane is a hollow fiber membrane tow vertically arranged in the shell, and the hollow fiber membrane tow comprises a plurality of hollow fiber membrane filaments.

Furthermore, the upper ends of the adjacent hollow fiber membrane filaments are connected, and the upper ends of the hollow fiber membrane filament bundles are fixedly connected with the shell.

Further, the upper end of the hollow fiber membrane yarn is open, and the lower end is closed.

Further, the air inlet end of the shell is provided with an air distribution device.

Further, the air distribution device is an air distribution plate, and a plurality of air holes are uniformly distributed on the air distribution plate.

Further, the air distribution device is a plurality of air distribution pipes, and the air distribution pipes are distributed among the hollow fiber membrane filaments.

Compared with the prior art, the technical scheme of the utility model following beneficial effect has: the embodiment of the utility model provides a water filter equipment adds at the water purification exit end and establishes detachable outlet filter membrane, improves water filter effect, can dismantle the washing with outlet filter membrane during the washing, improves the cleaning efficiency. The air inlet and the water purification inlet are arranged, so that the cleaning can be carried out by combining water and air, and the cleaning effect is good. Set up the water purification import alone for input water purification washs, compares and washs in using water inlet input water purification, can not bring into the pollutant of water inlet department, and the cleaning performance is good.

Drawings

Fig. 1 is a schematic structural diagram of a water filtering device according to an embodiment of the present invention.

The figure shows that: the device comprises a shell 1, a main filtering membrane 2, an outlet filtering membrane 3, a purified water outlet end 11, an air inlet end 12, a water inlet 13, a purified water inlet 14, a concentrated water outlet 15, an end cover 4 and a water outlet 41.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the utility model provides a water filter equipment, as shown in fig. 1, including shell 1, main filtration membrane 2 and export filter membrane 3. The upper end of the shell 1 is a purified water outlet end 11 for outputting filtered purified water. The lower end of the housing 1 is an air inlet end 12 for introducing air from the outside into the housing 1. A main filter membrane 2 is arranged inside said housing 1. The side part of the shell 1 close to the purified water outlet end 11 is provided with a concentrated water outlet 15 for discharging the filtered concentrated water containing impurities. The side of the housing 1 near the inlet end 12 is provided with a water inlet 13 and a purified water inlet 14, the water inlet 13 is used for inputting raw water to be treated during filtration, and the purified water inlet 14 is used for inputting purified water during cleaning. The outlet filter membrane 3 is arranged at the purified water outlet end 11 of the shell 1 and is detachably connected with the shell.

When the water filtering device of the embodiment is used for filtering, the air inlet end 12 is closed, raw water to be treated is input from the water inlet 13, the raw water enters the shell 1 and the surface of the main filtering membrane 2, passes through the main filtering membrane 2 after being filtered by the main filtering membrane 2 and flows to the water purification outlet end 11 from bottom to top, purified water is obtained after being filtered by the outlet filtering membrane 3, and pollutants are intercepted on the outer surface of the main filtering membrane 1 and the lower surface of the outlet filtering membrane 3. During cleaning, the outlet filter membrane 3 is detached for independent cleaning, the air inlet end 12 is opened, the purified water outlet end 11 is closed, compressed air is introduced from the air inlet end 12, purified water is simultaneously input from the purified water inlet 14, the purified water flushes the outer surface of the main filter membrane 2 under the action of the compressed air, and the concentrated water with pollutants is discharged from the concentrated water outlet 15.

The water filter device of this embodiment sets up detachable export filter membrane 3 at water purification exit end 11, improves water filter effect, can dismantle the washing with export filter membrane 3 during the washing, improves the cleaning efficiency. The air inlet end 12 and the purified water inlet 14 are arranged, so that the cleaning can be carried out by combining water and gas, and the cleaning effect is good. Set up water purification import 14 alone for the input water purification washs, compares in using the water inlet to input the water purification, can not bring into the pollutant of water inlet department, and the cleaning performance is good.

Preferably, an end cover 4 is arranged at the purified water outlet end 11 of the shell 1, the end cover 4 is in threaded connection with the shell 1, the outlet filter membrane 3 is fixed in the end cover 4, and a water outlet 41 is arranged on the end cover 4. During filtering, water filtered by the main filtering membrane enters the end cover 4, and is filtered by the outlet filtering membrane 3 and then purified water is discharged from the water outlet 41. The outlet filter membrane is fixed in the end cover, the end cover is in threaded connection with the shell, the end cover can be detached through cleaning, the outlet filter membrane can be cleaned, and the cleaning effect is good.

Preferably, the main filtering membrane 2 is a hollow fiber membrane bundle vertically disposed in the housing 1, and the hollow fiber membrane bundle includes a plurality of hollow fiber membrane filaments. The top end of the hollow fiber membrane filament bundle is positioned above the concentrated water outlet, and the top end of the inner cavity of each hollow fiber membrane filament is communicated with the purified water outlet end 11. During filtering, impurities in raw water are intercepted on the outer surface of the hollow fiber membrane filaments, the filtered water passes through micropores on the wall of the hollow fiber membrane filaments to enter the inner cavity of the hollow fiber membrane filaments, finally flows out from the upper end of the inner cavity of the hollow fiber membrane filaments, and is filtered by the outlet filter membrane to obtain purified water. The wall of the hollow fiber membrane wire is distributed with micropores, the aperture is larger than the molecular weight of trapped substances, the trapped molecular weight can reach thousands to hundreds of thousands, and the hollow fiber membrane wire can obtain high filtering effect when used for water filtration.

Further, the upper ends of the adjacent hollow fiber membrane filaments are connected, and the upper ends of the hollow fiber membrane filament bundles are fixedly connected with the shell 1. In the hollow fiber membrane tow, the upper end side faces of all hollow fiber membrane filaments are fixed together by using the colloid, and the upper end of the whole hollow fiber membrane tow is fixed on the inner wall of the shell 1, so that the hollow fiber membrane tow is prevented from moving in the shell. The lower extreme of hollow fiber membrane silk is free, makes the clearance between the hollow fiber membrane silk big like this, is difficult for appearing the pollutant dead angle, easily washes totally.

Further, the upper end of the hollow fiber membrane yarn is open, and the lower end is closed. The one end that is close to inlet end 12 of hollow fiber membrane silk is sealed, prevents to get into the interior pending raw water of shell from the water inlet and directly gets into in the hollow fiber membrane silk inner chamber through not filtering, and influence the filter effect.

Preferably, the air inlet end 12 of the housing is provided with an air distribution device. The air distribution device is used for distributing the introduced compressed air on the surface of the hollow fiber membrane yarn during cleaning, so that the cleaning effect is improved.

Preferably, the gas distribution device is a gas distribution plate, and a plurality of gas holes are uniformly distributed on the gas distribution plate. Compressed air introduced during cleaning passes through the air distribution plate to form small-size and uniformly-distributed bubble groups, so that impurities on the surface of the hollow fiber membrane filaments can be effectively cleaned.

Preferably, the air distribution device is a plurality of air distribution pipes, and the air distribution pipes are distributed among the hollow fiber membrane filaments. Compressed air introduced during cleaning passes through the air distribution pipe to form a small-size bubble group, so that the cleaning agent has a good shearing and removing effect on pollutants on the surface of the hollow fiber membrane yarn, and the cleaning effect is good.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A water filtration device, characterized by comprising a housing (1), a main filtration membrane (2) and an outlet filtration membrane (3), the main filtration membrane (2) being arranged inside the housing (1); one end of the shell (1) is a purified water outlet end (11), the other end of the shell is an air inlet end (12), a concentrated water outlet (15) is arranged on the side part of the shell (1) close to the purified water outlet end (11), and a water inlet (13) and a purified water inlet (14) are arranged on the side part of the shell (1) close to the air inlet end (12); the outlet filter membrane (3) is arranged at the purified water outlet end (11) of the shell (1) and is detachably connected with the shell (1).

2. A water filtering device according to claim 1, wherein the purified water outlet end (11) of the housing (1) is provided with an end cap (4), the end cap (4) is in threaded connection with the housing (1), the outlet filter membrane (3) is fixed on the end cap (4), and the end cap (4) is provided with a water outlet (41).

3. A water filtration device according to claim 1, wherein the main filtration membrane (2) is a hollow fiber membrane tow vertically arranged within the housing (1), the hollow fiber membrane tow comprising a plurality of hollow fiber membrane filaments.

4. A water filtration device as claimed in claim 3 wherein the adjacent hollow fibre membrane filaments are connected at their upper ends and the hollow fibre membrane tow is fixedly connected at its upper end to the housing.

5. A water filtration device according to claim 4, wherein the hollow fiber membrane filaments are open at the upper end and closed at the lower end.

6. A water filtration device as claimed in claim 3 wherein the air inlet end of the housing is provided with air distribution means.

7. The water filtering device as claimed in claim 6, wherein the air distribution device is an air distribution plate, and a plurality of air holes are uniformly distributed on the air distribution plate.

8. The water filtration device of claim 6, wherein the gas distribution device is a plurality of gas distribution tubes distributed among the hollow fiber membrane filaments.