Novel ultrafiltration assembly

Abstract

The utility model discloses a novel ultrafiltration component which comprises a tube shell, a water inlet end head arranged at the left end of the tube shell, a wastewater outlet end head arranged at the right end of the tube shell, a backwashing water inlet arranged on the side wall of the left end of the tube shell, a pure water outlet end head arranged on the side wall of the right end of the tube shell, residual chlorine purification stone arranged at the left end in the tube shell, and a filter element membrane arranged in the tube shell, a pure water transition cavity is formed between the tube shell and the filter element membrane, the filter element membrane comprises an inner supporting layer and an outer surface layer, the supporting layer is of a polysulfone asymmetric porous structure, and the outer surface layer is made of nano titanium dioxide and a modified PVDF (Polyvinylidene Fluoride) material; by arranging the tube shell, the filter element membrane, the water inlet end, the wastewater outlet end, the backwashing water inlet and the pure water outlet end, large impurities can be removed and blockage of the impurities to the filter element membrane can be reduced due to preliminary filtration of residual chlorine purification stone, and the outer surface layer is made of nano titanium dioxide and modified PVDF materials, so that hydrophilicity and photocatalytic self-cleaning capability are improved; and membrane hole blockage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of ultrafiltration technology, and in particular relates to a novel ultrafiltration component. Background Technology

[0002] Filter membranes are artificial permeable membranes used in ultrafiltration processes. They are generally made of polymeric materials such as cellulose acetate, cellulose acetate esters, polyethylene, polysulfone, and polyamide. They are typically prefabricated into various types of membrane modules, including tubular, plate, spiral wound, and capillary types, and multiple modules are then assembled together for use to increase the filtration area and facilitate maintenance.

[0003] Regarding ultrafiltration membrane modules, a search of existing technology reveals a utility model patent with Chinese patent publication number CN218459140U, which discloses a skid-mounted ultrafiltration membrane. This membrane mainly includes an ultrafiltration membrane main tube, with a filtration mechanism installed at the axial position of the main tube. One end of the main tube is screwed with a first sealing membrane cap, and the inner wall of the first sealing membrane cap is connected to a drain pipe. The other end of the main tube is screwed with a second sealing membrane cap, and the inner wall of the second sealing membrane cap is connected to an inlet pipe.

[0004] In the existing technology, ultrafiltration membrane modules with similar problems to those mentioned above have been found to have areas for improvement during actual implementation: colloidal microorganisms easily clog the membrane pores, leading to a decrease in flux. Utility Model Content

[0005] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a new type of ultrafiltration module, which solves the problem that colloidal microorganisms in the existing ultrafiltration membranes easily clog the pores, resulting in a decrease in flux.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a novel ultrafiltration component, comprising a tube shell, an inlet end at the left end of the tube shell, a wastewater outlet end at the right end of the tube shell, a backwash water inlet on the left side wall of the tube shell, a pure water outlet end on the right side wall of the tube shell, a residual chlorine purification stone at the left end of the tube shell, a filter membrane inside the tube shell, and a pure water transition cavity formed between the tube shell and the filter membrane. The filter membrane comprises an inner support layer and an outer outer layer. The support layer is a polysulfone asymmetric porous structure, and the outer layer is made of nano-titanium dioxide and modified PVDF material.

[0007] As a further improvement of this utility model, an intermediate transition layer is provided between the support layer and the outer surface layer, and the intermediate transition layer is made of a porous polymer.

[0008] As a further improvement of this utility model, the polymer is a polyethersulfone material.

[0009] As a further improvement of this utility model, a graphene coating is added to the outer surface layer of the filter membrane.

[0010] As a further improvement of this utility model, a spiral guide groove is provided on the inner side of the filter membrane, and the spiral direction of the guide groove is the same as the flow direction of the fluid.

[0011] As a further improvement of this utility model, the tube shell is made of stainless steel.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] 1. By setting up a tubular shell, with a filter membrane inside, a water inlet at the left end and a wastewater outlet at the right end, a backwash water inlet on the left sidewall and a pure water outlet on the right sidewall, during filtration, water enters the filter membrane after initial filtration by the residual chlorine purification stone at the inlet, then flows into the pure water transition chamber and out through the pure water outlet. The filtered wastewater flows out through the wastewater outlet. The initial filtration by the residual chlorine purification stone removes larger impurities, reducing clogging of the filter membrane. Furthermore, the support layer, with its asymmetric porous polysulfone structure, increases mechanical strength and overall stability. The outer layer, composed of nano-titanium dioxide and modified PVDF, enhances hydrophilicity and photocatalytic self-cleaning capabilities, further reducing membrane pore clogging.

[0014] 2. By setting an intermediate transition layer between the support layer and the outer layer, the intermediate transition layer is made of porous polymer to ensure the filtration effect.

[0015] 3. By adding a graphene coating to the outer layer of the filter membrane, the antibacterial and thermal conductivity properties are improved.

[0016] 4. By setting spiral guide grooves on the inside of the filter membrane, the concentration polarization phenomenon is reduced, the surface turbulence is improved, and the adhesion of impurities is reduced. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A sectional view;

[0020] In the diagram: 1. Pipe shell; 2. Inlet water terminal; 3. Wastewater outlet water terminal; 4. Backwash water inlet; 5. Pure water outlet water terminal; 6. Residual chlorine purification stone; 7. Filter membrane; 8. Pure water transition chamber. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0022] For ease of description, the coordinate system is defined as follows: Figure 1 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0023] This utility model discloses a novel ultrafiltration component. (Refer to...) Figure 1 and Figure 2 A novel ultrafiltration module includes a housing 1 made of stainless steel. The housing 1 has a water inlet 2 at its left end and a wastewater outlet 3 at its right end. A backwash water inlet 4 is located on the left sidewall of the housing 1, and a pure water outlet 5 is located on the right sidewall. A residual chlorine purification stone 6 is located inside the housing 1 at its left end. The residual chlorine purification stone 6 can be encased in a mesh and fixed to the inner wall of the housing 1 by the mesh. A filter membrane 7, which is tubular and fixed inside the housing, is located inside the housing 1. A pure water transition chamber 8 is formed between the housing 1 and the filter membrane 7. The filter membrane 7 includes an inner support layer and an outer outer layer. The support layer has an asymmetric porous structure of polysulfone, and the outer layer is made of nano-titanium dioxide and modified PVDF material.

[0024] In addition, an intermediate transition layer is provided between the support layer and the outer surface layer. This intermediate transition layer is made of a porous polymer, which ensures the filtration effect. In this embodiment, the polymer is made of polyethersulfone (PES).

[0025] In addition, the outer surface of the filter membrane 7 is coated with graphene to improve its antibacterial and thermal conductivity properties.

[0026] In addition, the inner side of the filter membrane 7 is provided with a spiral guide groove, and the spiral direction of the guide groove is the same as the flow direction of the fluid; this reduces concentration polarization, improves surface turbulence, and reduces impurity adhesion.

[0027] This invention features a casing 1 containing a filter membrane 7. The casing 1 has a water inlet 2 at its left end and a wastewater outlet 3 at its right end. A backwash water inlet 4 is located on the left sidewall of the casing 1, and a pure water outlet 5 is located on the right sidewall. During filtration, water undergoes preliminary filtration through the residual chlorine purification stone 6 at the inlet 2 before entering the filter membrane 7. It then flows through the filter membrane 7 into the pure water transition chamber 8 and exits from the pure water outlet 5. The filtered wastewater exits from the wastewater outlet 3. The preliminary filtration by the residual chlorine purification stone 6 removes larger impurities, reducing clogging of the filter membrane 7. Furthermore, the support layer, constructed with a polysulfone asymmetric porous structure, increases mechanical strength and improves overall stability. The outer layer, made of nano-titanium dioxide and modified PVDF, enhances hydrophilicity and photocatalytic self-cleaning capabilities, further reducing membrane pore clogging.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be understood that the specific embodiments described herein are only for understanding this utility model and are not intended to limit this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

Claims

1. A novel ultrafiltration module comprising a tube shell, characterized in that: The left end of the tube shell is provided with a water inlet, the right end with a wastewater outlet, the left side wall with a backwash water inlet, the right side wall with a pure water outlet, the left end of the tube shell with a residual chlorine purification stone, and the tube shell with a filter membrane. The tube shell and the filter membrane form a pure water transition chamber. The filter membrane includes an inner support layer and an outer outer layer. The support layer is a polysulfone asymmetric porous structure, and the outer layer is made of nano-titanium dioxide and modified PVDF material.

2. A novel ultrafiltration module as claimed in claim 1, wherein: An intermediate transition layer, made of a porous polymer, is also provided between the support layer and the outer surface layer.

3. A novel ultrafiltration module as claimed in claim 2, wherein: The polymer is a polyethersulfone material.

4. A novel ultrafiltration module as claimed in claim 1, wherein: The outer surface of the filter membrane is also coated with graphene.

5. A novel ultrafiltration module as claimed in claim 1, wherein: The inner side of the filter membrane is provided with a spiral guide groove, and the spiral direction of the guide groove is the same as the flow direction of the fluid.

6. A novel ultrafiltration module as claimed in claim 1, wherein: The casing is made of stainless steel.

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