High-flux high-packing-density all-plastic ceramic flat sheet membrane tower

Abstract

The utility model relates to an all-plastic ceramic flat membrane tower with high flux and high packing density, which comprises a membrane tower, a water collecting seal head and a base, the membrane tower is formed by stacking a plurality of membrane components, the water collecting seal head is positioned at the top end of the membrane tower, and the base is positioned at the bottom of the membrane tower; the membrane assembly comprises first frames, second frames and membrane elements, the two first frames serve as longitudinal edges, the two second frames serve as transverse edges to form a rectangular supporting frame, and the multiple membrane elements are transversely arranged in the supporting frame of the membrane assembly in parallel in the longitudinal direction. According to the membrane tower, the membrane elements with the water collecting openings in the two ends are adopted, the water production pressure is reduced, the membrane flux is increased, the membrane elements are transversely installed in the all-plastic membrane frame to form the sealed membrane assemblies, the multiple membrane assemblies are stacked up and down to form the membrane tower, the membrane tower is compact in structure, the filling density of the membrane elements is high, the sealing performance between the assemblies is good, and high-flux application can be achieved; the membrane frame is made of all-plastic materials, is more resistant to acid and alkali corrosion and is suitable for various water qualities.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a high-flux and high-packing-density all-plastic ceramic flat membrane tower. Background Art

[0002] Ceramic membrane is a kind of inorganic membrane, belonging to the solid membrane material in membrane separation technology. It is mainly made of inorganic materials such as aluminum oxide, zirconium oxide, titanium oxide and silicon oxide of different specifications as the support body, and is finely coated on the surface and fired at high temperature. It is an asymmetric porous material with a large number of through-microstructures. Ceramic membrane can achieve molecular-level filtration due to its acid and alkali resistance, high temperature resistance and chemical stability in extreme environments. It is mainly used for filtering and separating liquid and gaseous mixtures, and can replace traditional separation technologies such as centrifugation, evaporation, distillation, and filtration to achieve the purpose of improving product quality and reducing production costs. It can be widely used in wastewater filtration, purification and other treatment processes in environmental protection, petroleum, chemical, metallurgy, coal, papermaking, food, pharmaceutical and other industries.

[0003] Ceramic membrane materials have excellent mechanical properties and high strength. During operation, the membrane does not deform, the membrane pore size remains unchanged, and the filtered water quality is more stable than that of organic membranes. Ceramic membranes are resistant to acid, alkali, high temperature, and organic solvents, and are chemically stable in extreme environments. Ceramic membranes can be cleaned with higher concentrations, higher temperatures, and acid and alkali solutions that organic membranes cannot withstand, and the membrane flux recovery effect is good. The membrane material can be recycled and is an environmentally friendly product. However, since the frames of conventional ceramic membrane components are mostly made of stainless steel, their use in water treatment with high chloride ion concentrations is limited. Conventional ceramic membrane elements have a water collection port at one end, resulting in a relatively large water production pressure and low flux. In addition, the ceramic membrane components of conventional stainless steel frames have a loose structure and a relatively small packing density, and the project implementation occupies a large area. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the prior art and provide a high-flux and high-packing-density all-plastic ceramic flat membrane tower.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-flux and high-packing-density all-plastic ceramic flat membrane tower, comprising: a membrane tower, a water-collecting head, and a base, wherein the membrane tower is composed of a plurality of stacked membrane components, the water-collecting head is located at the top of the membrane tower, and the base is located at the bottom of the membrane tower;

[0006] The membrane assembly comprises a first frame, a second frame and a membrane element. Two of the first frames serve as longitudinal sides and two of the second frames serve as transverse sides to form a rectangular support frame. A plurality of the membrane elements are placed in parallel in the longitudinal direction in the support frame.

[0007] Furthermore, a limit slot is provided on the inner side of the first frame, a longitudinal water collection channel is provided inside the first frame, and the longitudinal water collection channel is communicated with the limit slot.

[0008] Furthermore, sealing film boxes are provided at both ends of the membrane element, and water collection ports are horizontally installed outwardly of the sealing film boxes. The water collection ports are respectively installed in the limiting slots of the first frame on both sides, and the water collection ports are connected to the longitudinal water collection channels in the first frame.

[0009] Furthermore, a water collecting trough is provided on the second frame, a transverse water collecting channel is opened inside the second frame, the transverse water collecting channel is connected to the water collecting trough, the transverse water collecting channel is connected to the longitudinal water collecting channel, and the water collecting troughs of the multiple membrane modules are connected up and down and connected to the water collecting head.

[0010] Furthermore, the first frame and the second frame are all-plastic frames, and the first frame and the second frame are fastened and connected by all-plastic bolts.

[0011] Furthermore, two adjacent layers of the membrane components are fastened and connected with a full plastic key lock.

[0012] The beneficial effects of the utility model are as follows: the utility model adopts a membrane element with water collecting ports at both ends to reduce the water production pressure and increase the membrane flux; the membrane element is horizontally installed in a full plastic membrane frame to form a sealed membrane assembly; a plurality of membrane assemblies are stacked up and down to form a membrane tower; the membrane tower has a compact structure, a high packing density of membrane elements, good sealing between the assemblies, and can be used for high-flux applications; the membrane frame is made of full plastic material, is more resistant to acid and alkali corrosion, and is suitable for various water qualities. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a top view schematic diagram of the utility model;

[0015] Figure 3 It is the structural schematic diagram of the membrane element;

[0016] Figure 4 is a schematic diagram of the structure of the membrane module;

[0017] Figure 5 is a top view schematic diagram of a membrane assembly;

[0018] In the figure: 1-water collecting head; 2-membrane assembly; 3-base; 4-membrane tower; 5-water collecting port; 6-membrane element; 7-first frame; 8-second frame; 9-water collecting tank;

[0019] The drawings in this utility model are all schematic diagrams, and their sizes do not represent actual sizes;

[0020] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] like Figure 1 to Figure 5 As shown, a high-flux and high-packing-density all-plastic ceramic flat membrane tower comprises: a membrane tower 4, a water-collecting head 1, and a base 3. The membrane tower 4 is composed of a plurality of stacked membrane modules 2. The water-collecting head 1 is located at the top of the membrane tower 4, and the base 3 is located at the bottom of the membrane tower 4.

[0023] The membrane assembly 2 includes a first frame 7, a second frame 8, and a membrane element 6. Two of the first frames 7 are used as longitudinal sides, and two of the second frames 8 are used as transverse sides to form a rectangular support frame. A plurality of membrane elements 6 are placed in parallel in the longitudinal direction in the support frame. The pore size of the membrane element 6 is 0.1 μm, the outer dimensions are 600×145×6 mm, and the effective filtration area of ​​each piece is 0.174 m2. Each membrane assembly 2 can be flexibly provided with 1 to 13 layers of membrane elements 6 according to actual conditions.

[0024] A limit slot is provided inside the first frame 7 , and a longitudinal water collecting channel is provided inside the first frame 7 , and the longitudinal water collecting channel is communicated with the limit slot.

[0025] The two ends of the membrane element 6 are provided with a sealing film box, and the sealing film box is horizontally installed with a water collection port 5 to the outside, and the water collection port 5 is respectively installed in the limit card slots of the first frame 7 on both sides, and the water collection port 5 is connected to the longitudinal water collection channel in the first frame 7. The water collection port 5 is made of ABS material.

[0026] A water collecting trough 9 is provided on the second frame 8, and a transverse water collecting channel is opened inside the second frame 8. The transverse water collecting channel is connected to the water collecting trough 9, and the transverse water collecting channel is connected to the longitudinal water collecting channel. The water collecting troughs 9 of the multiple membrane assemblies 2 are connected up and down and connected to the water collecting head 1.

[0027] The first frame 7 and the second frame 8 are all-plastic frames, and the first frame 7 and the second frame 8 are fastened and connected by all-plastic bolts.

[0028] Two adjacent layers of the membrane components 2 are fastened and connected by a full plastic key lock.

[0029] When the utility model is used, the membrane assembly 2 is completely immersed in sewage, and the water is filtered through the ceramic membrane by negative pressure suction. The water that passes through the membrane enters the water collection channel through the water collection port 5 on the membrane element 6. The water collection channel collects the produced water into the water collection tank 9 of the second frame 8, and finally flows into the water collection head 1. In order to ensure the stable and effective operation of the membrane assembly 2, the gap water discharge method is adopted, and the inside of the membrane can be cleaned by backwashing and chemical agents.

[0030] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A high-flux, high-packing-density all-plastic ceramic flat membrane tower, characterized in that: include: A membrane tower (4), a water collection head (1), and a base (3), wherein the membrane tower (4) is composed of a plurality of stacked membrane modules (2), the water collection head (1) is located at the top of the membrane tower (4), and the base (3) is located at the bottom of the membrane tower (4); The membrane assembly (2) comprises a first frame (7), a second frame (8), and a membrane element (6); two of the first frames (7) serve as longitudinal sides, and two of the second frames (8) serve as transverse sides to form a rectangular support frame; a plurality of the membrane elements (6) are arranged in parallel in the longitudinal direction in the support frame.

2. The high-flux, high-packing-density all-plastic ceramic flat membrane tower according to claim 1, characterized in that: A limit slot is provided on the inner side of the first frame (7), and a longitudinal water collection channel is provided inside the first frame (7), wherein the longitudinal water collection channel is communicated with the limit slot.

3. The high-flux, high-packing-density all-plastic ceramic flat membrane tower according to claim 2, characterized in that: Sealing film boxes are provided at both ends of the membrane element (6), and water collection ports (5) are horizontally installed outwardly of the sealing film box. The water collection ports (5) are respectively installed in the limiting slots of the first frame (7) on both sides, and the water collection ports (5) are connected to the longitudinal water collection channels in the first frame (7).

4. The high-flux, high-packing-density all-plastic ceramic flat membrane tower according to claim 3, characterized in that: A water collecting trough (9) is provided on the second frame (8), a transverse water collecting channel is opened inside the second frame (8), the transverse water collecting channel is connected to the water collecting trough (9), the transverse water collecting channel is connected to the longitudinal water collecting channel, and the water collecting troughs (9) of the plurality of membrane assemblies (2) are connected vertically and connected to the water collecting head (1).

5. The high-flux, high-packing-density all-plastic ceramic flat membrane tower according to claim 1, characterized in that: The first frame (7) and the second frame (8) are all-plastic frames, and the first frame (7) and the second frame (8) are fastened together by all-plastic bolts.

6. The high-flux, high-packing-density all-plastic ceramic flat membrane tower according to claim 1, characterized in that: Two adjacent layers of the membrane components (2) are fastened and connected by a full plastic key lock.

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