CN211920976U - A high-precision multi-layer ultrafiltration device - Google Patents

Abstract

The utility model discloses a high-precision multi-layer ultrafiltration device, which mainly comprises a box body. Several layers of inclined ultrafiltration membrane sheets are arranged in the box body from top to bottom. A water inlet pipe and a flushing nozzle are arranged on the upper side wall of one side, a water distribution plate is arranged below the water inlet pipe, the flushing nozzle is located under the water distribution plate, the water inlet pipe is connected with the water inlet main pipe, and the water inlet pipe is provided with Water inlet valve; the upper side wall of the lower side of each layer of ultrafiltration membranes is provided with a concentrated water drainage branch pipe, the concentrated water drainage branch pipe is connected with the concentrated water drainage main pipe, and the concentrated water drainage main pipe is connected with the box body The concentrated water tank on one side is connected; the device occupies a small area, has high filtration precision, uniform water distribution, can discharge concentrated water in time, and can easily flush and replace the ultrafiltration membrane.

Description

A high-precision multi-layer ultrafiltration device

technical field

The utility model relates to the field of sewage treatment, in particular to a high-precision multi-layer ultrafiltration device.

Background technique

Ultrafiltration is one of the membrane separation technologies with pressure as the driving force. It aims to separate macromolecules and small molecules. The membrane pore size is between 20-1000A°.

In the ultrafiltration process, the aqueous solution flows through the membrane surface under pressure, and the solvent (water) and small molecule solutes smaller than the membrane pores become the purified liquid (filtrate), and the solutes and solute groups larger than the membrane pores are permeable to the membrane. It is retained and discharged with the water flow to become a concentrated solution. The ultrafiltration process is dynamic filtration, and the separation is completed in the flow state. The solute is only limitedly deposited on the membrane surface, and the ultrafiltration rate decays to a certain extent and tends to equilibrium, and can be recovered by cleaning.

At present, the ultrafiltration devices on the market are either sealed in the cylinder and cannot replace the ultrafiltration membrane, or they are curtain-type used in large-scale sewage treatment equipment and cannot be used in a small-scale environment.

Chinese patent CN208684486U discloses a novel ultrafiltration device, including an ultrafiltration device body, the upper end of the ultrafiltration device body is provided with a water inlet, and a control switch is installed on the front surface of the ultrafiltration device body, and the inner side of the water inlet A filter hopper is provided, a drain pipe is provided below the control switch, a valve is installed in the middle of the drain pipe, an ultrafiltration suction box is provided inside the ultrafiltration device body, and the inner wall of the ultrafiltration device body is provided with There are chutes. This patent uses the principle of drawer to set up ultrafiltration membrane, which is easy to replace, but also has certain defects:

First: The patented sewage is only filtered by an ultrafiltration membrane once, and the filtration accuracy is not high; Second: The first filter sponge is used to distribute water, which has certain problems. The sponge absorbs water, and the concentrated water and impurities cannot be discharged after the sewage is filtered. It is adsorbed in the sponge, which affects the subsequent filtration. In addition, the ultrafiltration membrane must be removed for cleaning, which is cumbersome.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and to provide a high-precision multi-layer ultrafiltration membrane with a small footprint, high filtration precision, uniform water distribution, timely discharge of concentrated water, and convenient flushing and replacement of ultrafiltration membranes. filter device.

For realizing the above-mentioned purpose of the utility model, the technical scheme of the present utility model is:

A high-precision multi-layer ultrafiltration device mainly includes a box, wherein several layers of inclined ultrafiltration membranes are arranged from top to bottom in the box, and the upper side wall of each layer of ultrafiltration membranes is on the higher side. A water inlet pipe and a flushing nozzle are provided, a water distribution plate is arranged below the water inlet pipe, the flushing nozzle is located under the water distribution plate, the water inlet pipe is connected with the water inlet main pipe, and a water inlet valve is arranged on the water inlet pipe; The upper side wall of the lower side of each layer of ultrafiltration membranes is provided with a concentrated water drainage branch pipe, the concentrated water drainage branch pipe is connected with the concentrated water drainage main pipe, and the concentrated water drainage main pipe is connected with the concentrated water on one side of the box body. The flushing nozzle is connected with the flushing main pipe through the flushing branch pipe, and the flushing main pipe is connected with the dispensing tank on the other side of the box body. The bottom of the box body is provided with a water outlet pipe and a return pipe, and the return pipe is connected with the dispensing tank. .

Preferably, the ultrafiltration membrane is provided with at least three layers, and the inclination angle of the ultrafiltration membrane is 10°˜15°.

Preferably, a flushing valve is provided on the flushing branch pipe, and a flushing pump is provided on the flushing main pipe.

Preferably, a suction pump is provided on the concentrated water drainage main pipe.

Preferably, the ultrafiltration membrane is a pull-out type, including an ultrafiltration membrane and a frame arranged on the periphery of the ultrafiltration membrane, a cover plate is arranged on one side of the frame, and the frame passes through the notch card on the side wall of the box. into the slot on the side wall of the box body, and the cover plate seals the gap.

Preferably, a plurality of drainage grooves are arranged on the upper surface of the water distribution plate, and the drainage grooves are arranged in an "eight" shape with the center of the water distribution plate as the symmetrical axis along the flow direction of the sewage.

The beneficial effects of the present utility model are:

First: Multi-layer filtration can be achieved by using multi-layer ultrafiltration membranes, and the sewage is filtered layer by layer to ensure the filtration accuracy;

Second: the device occupies a small area and has a flexible structure. When the first layer of ultrafiltration membranes cannot be used, sewage can enter from the water inlet pipe of the second layer of ultrafiltration membranes without affecting the treatment process;

Third: Set up the concentrated water drainage branch pipe, which can discharge the concentrated water in time without affecting the follow-up treatment;

Fourth: Set up a dispensing tank and a flushing nozzle, which can realize chemical cleaning of the ultrafiltration membrane;

Fifth: the ultrafiltration membrane is easy to replace.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a schematic diagram of the structure of the water distribution plate.

Figure 3 is a schematic structural diagram of an ultrafiltration membrane.

In the figure: 1 is the box, 2 is the ultrafiltration membrane, 2.1 is the ultrafiltration membrane, 2.2 is the frame, 2.3 is the cover, 3 is the water inlet pipe, 4 is the flushing nozzle, 5 is the water distribution plate, and 5.1 is the drainage tank , 6 is the water inlet main pipe, 7 is the water inlet valve, 8 is the concentrated water drainage branch pipe, 9 is the concentrated water drainage main pipe, 10 is the concentrated water tank, 11 is the flushing branch pipe, 12 is the flushing main pipe, 13 is the dispensing tank, 14 is the The water outlet pipe, 15 is a return pipe, 16 is a flush valve, 17 is a flush pump, and 18 is a suction pump.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1:

A high-precision multi-layer ultrafiltration device mainly includes a box body 1, and several layers of inclined ultrafiltration membrane sheets 2 are arranged in the box body 1 from top to bottom. The upper side wall of one side is provided with a water inlet pipe 3 and a flushing nozzle 4, a water distribution plate 5 is arranged below the water inlet pipe 3, the flushing nozzle 4 is located under the water distribution plate 5, and the water inlet pipe 3 and the water inlet main pipe 6 are arranged. Connection, the water inlet valve 7 is provided on the water inlet pipe 3; the upper side wall of the lower side of each layer of the ultrafiltration membrane 2 is provided with a concentrated water drainage branch pipe 8, and the concentrated water drainage branch pipe 8 is connected with the concentrated water The drainage main pipe 9 is connected, and the concentrated water drainage main pipe 9 is communicated with the concentrated water tank 10 on one side of the box body 1; One side of the dispensing tank 13 is connected, the bottom of the box 1 is provided with a water outlet pipe 14 and a return pipe 15, the return pipe 15 is connected to the dispensing tank 13, and the filtered clean water can be used to configure cleaning medicine.

Preferably, the ultrafiltration membrane 2 is provided with at least three layers, and the inclination angle of the ultrafiltration membrane 2 is 10°˜15°.

Preferably, a flushing valve 16 is provided on the flushing branch pipe 11 , and a flushing pump 17 is provided on the flushing main pipe 12 .

Preferably, a suction pump 18 is provided on the concentrated water drainage main pipe 9 .

Preferably, the ultrafiltration membrane 2 is a pull-out type (similar in structure to Chinese patent CN208684486U), including an ultrafiltration membrane 2.1 and a frame 2.2 arranged on the periphery of the ultrafiltration membrane 2.1, and a cover plate is arranged on one side of the frame 2.2 2.3. The frame 2.2 passes through the notch of the side wall of the box body 1 and is inserted into the slot of the side wall of the box body 1, and the cover plate 2.3 seals the notch.

Preferably, a plurality of drainage grooves 5.1 are arranged on the upper surface of the water distribution plate 5, and the drainage grooves 5.1 are arranged in an "eight" shape along the flow direction of the sewage with the center of the water distribution plate 5 as the symmetrical axis.

The working principle of this device:

The sewage enters the tank 1 from the uppermost water inlet pipe 3, and after being filtered by the uppermost ultrafiltration membrane 2, the concentrated water is discharged along the concentrated water drainage branch pipe 8, and the filtrate is filtered by the second ultrafiltration membrane 2 again. , and so on, so the sewage of the device can be filtered through multiple layers, the filtration precision is high, and the effect is good.

According to the normal process, the ultrafiltration membrane 2 on the uppermost layer is the dirtiest. When the ultrafiltration membrane 2 on the uppermost layer fails to work normally, the sewage can enter the tank 1 from the water inlet pipe 3 on the second layer, and carry out layer by layer. Filtration does not affect normal work, and the uppermost ultrafiltration membrane 2 can be pulled out and replaced.

When the ultrafiltration membrane 2 needs to be cleaned, it is only necessary to open the flushing pump 17, the flushing valve 16 and the valve on the concentrated water drainage branch pipe. 14. A new round of filtration can be performed after draining the accumulated water.

The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Claims (6)

1. The utility model provides a high accuracy multilayer ultrafiltration device, mainly includes the box, its characterized in that: a plurality of layers of inclined ultrafiltration membranes are arranged in the box body from top to bottom, a water inlet pipe and a flushing nozzle are arranged on the upper side wall of the higher side of each layer of ultrafiltration membrane, a water distribution plate is arranged below the water inlet pipe, the flushing nozzle is positioned below the water distribution plate, the water inlet pipe is connected with a water inlet header pipe, and a water inlet valve is arranged on the water inlet pipe; the side wall of the upper part of the lower side of each layer of ultrafiltration membrane is provided with a concentrated water drainage branch pipe, the concentrated water drainage branch pipe is connected with a concentrated water drainage main pipe, and the concentrated water drainage main pipe is communicated with a concentrated water tank on one side of the box body; the flushing nozzle is connected with the flushing header pipe through the flushing branch pipe, the flushing header pipe is communicated with the dispensing tank on the other side of the tank body, a water outlet pipe and a backflow pipe are arranged at the bottom of the tank body, and the backflow pipe is connected with the dispensing tank.

2. A high precision multi-layered ultrafiltration device according to claim 1, wherein: the ultrafiltration membrane is at least provided with three layers, and the inclination angle of the ultrafiltration membrane is 10-15 degrees.

3. A high precision multi-layered ultrafiltration device according to claim 1, wherein: the flushing branch pipe is provided with a flushing valve, and the flushing main pipe is provided with a flushing pump.

4. A high precision multi-layered ultrafiltration device according to claim 1, wherein: and a suction pump is arranged on the concentrated water drainage main pipe.

5. A high precision multi-layered ultrafiltration device according to claim 1 or 2, wherein: the ultrafiltration membrane is the pull formula, including milipore filter and the frame of setting at the milipore filter border, frame one side sets up the apron, the frame passes in the draw-in groove of box lateral wall is gone into to the breach card of box lateral wall, the apron seals the breach.

6. A high precision multi-layered ultrafiltration device according to claim 1, wherein: the upper surface of the water distribution plate is provided with a plurality of drainage grooves which are arranged in a splayed shape along the sewage flowing direction by taking the center of the water distribution plate as a symmetrical shaft.

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