A spiral type water filtering multi-stage membrane module structure
By using corn cob biomass and polylactic acid (PLA) to prepare fully biodegradable membrane modules, the problems of high cost and limited contact area of traditional water treatment membrane materials are solved, achieving efficient water purification and continuous system operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘育彤
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
Smart Images
Figure CN224541433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter cartridge technology, and in particular to a spiral wound multi-stage membrane module structure for water filtration. Background Technology
[0002] Currently, water treatment membranes are widely used in purification systems such as reverse osmosis, nanofiltration, and ultrafiltration. Their core materials are typically petrochemical-based polymers such as polyethersulfone (PES), polyacrylonitrile (PAN), and polyvinylidene fluoride (PVDF). While these traditional membrane materials possess good filtration performance and chemical stability, they generally suffer from high manufacturing costs, non-degradability, and difficulty in membrane fouling remediation, limiting their widespread application in low-cost, green, and sustainable water treatment scenarios.
[0003] Meanwhile, traditional spiral wound membrane modules are mostly composed of non-degradable support membranes and inorganic skeletons, resulting in high manufacturing costs and limited contact area with water. Utility Model Content
[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a spiral wound multi-stage membrane module structure that can increase the contact area with water.
[0005] The technical solution of this utility model is: a spiral wound multi-stage membrane module structure for water filtration, comprising, The mounting assembly includes a mounting shell, two covers respectively located at both ends of the mounting shell, a water inlet pipe located on the upper cover, and a water outlet pipe located on the lower cover. A diaphragm assembly is disposed within the mounting housing; A connecting component is disposed on the cover and connected to the diaphragm assembly.
[0006] Preferably, the connecting assembly includes an inner tube disposed on the cover and communicating with the water outlet pipe, two baffles disposed on the mounting shell and abutting against both ends of the membrane assembly, and two blocking blocks disposed on the inner tube and abutting against the baffles.
[0007] Preferably, the membrane assembly includes a support layer, a functional layer, and a processing layer arranged sequentially from the inside to the outside; the support layer, the functional layer, and the processing layer are wound in a spiral manner.
[0008] Preferably, the inner tube is disposed within the support layer, and the baffle abuts against the diaphragm assembly.
[0009] Preferably, the support layer, the functional layer, and the processing layer are formed by hot pressing.
[0010] Preferably, the inner tube has a porous structure and is connected to the outlet pipe.
[0011] Compared with the prior art, the present invention has the following beneficial technical effects: In this invention, raw water enters the system inlet, and the uniform flow ensures even distribution of the incoming water, preventing water flow deviation that could lead to localized clogging of the membrane modules. The multi-stage spiral wound water filtration system employs a multi-stage series connection of three membrane modules for step-by-step purification. Through reverse rinsing of the flow path, pollutants trapped on the membrane surface are periodically cleaned by reverse water flow, solving the membrane fouling problem. The terminal fine filtration unit further purifies the water quality, ensuring that the effluent meets standards. The tank serves as a water storage tank, enabling continuous system operation. The membrane modules can filter from the outside in or from the inside out, depending on the application scenario. Wastewater enters the mounting housing from the inlet pipe. If filtration is from the outside in, the water flows to the outer periphery of the membrane module, gradually permeating into the interior of the support layer, and finally flows into the outlet pipe through the inner pipe, thus achieving water filtration treatment. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an exploded view of the structure of an embodiment of this utility model; Figure 3 This is a structural cross-sectional view of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the flow guiding path in an embodiment of this utility model; Figure 5 This is a schematic diagram of the installation structure of an embodiment of this utility model.
[0014] Reference numerals: 1. Mounting component; 101. Mounting shell; 102. Cover; 103. Inlet pipe; 104. Outlet pipe; 2. Diaphragm assembly; 201. Support layer; 202. Functional layer; 203. Processing layer; 3. Connecting component; 301. Inner tube; 302. Baffle; 303. Blocking block. Detailed Implementation
[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.
[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0019] Example 1 like Figure 1-5 As shown, the present invention proposes a spiral wound water filtration multi-stage membrane module structure, including an installation component 1, a membrane assembly 2, and a connecting component 3; The mounting assembly 1 includes a mounting shell 101, two covers 102 respectively located at both ends of the mounting shell 101, an inlet pipe 103 located on the upper cover 102, and an outlet pipe 104 located on the lower cover 102; a diaphragm assembly 2 located inside the mounting shell 101; and a connecting assembly 3 located on the cover 102 and connected to the diaphragm assembly 2.
[0020] The connecting component 3 includes an inner tube 301 disposed on the cover 102 and communicating with the water outlet pipe 104, two baffles 302 disposed on the mounting shell 101 and abutting against both ends of the membrane assembly 2, and two blocking blocks 303 disposed on the inner tube 301 and abutting against the baffles 302.
[0021] The membrane assembly 2 includes a support layer 201, a functional layer 202, and a treatment layer 203 arranged sequentially from the inside out; the support layer 201, functional layer 202, and treatment layer 203 are spirally wound. An inner tube 301 is disposed within the support layer 201, and a baffle 302 abuts against the membrane assembly 2. The support layer 201, functional layer 202, and treatment layer 203 are formed by hot-pressing. The inner tube 301 has a porous structure and is connected to the outlet pipe 104.
[0022] In this embodiment, as Figure 5As shown, raw water enters the system inlet, and the flow equalization system is responsible for evenly distributing the incoming water to avoid water flow deviation that could cause localized clogging of the membrane modules. The three spiral wound water filter modules of the multi-effect filtration system are connected in series to achieve multi-stage purification. Through reverse flushing of the flow washing route, the pollutants trapped on the membrane surface are periodically cleaned by reverse water flow to solve the membrane fouling problem. The terminal fine filtration unit can further purify the water quality to ensure that the effluent meets the standards. The tank is a water storage tank, which enables the continuous operation of the system.
[0023] Drying and pulverizing corn cob biomass is used as a functional component, from which lignin and cellulose are extracted as the main raw materials for functional materials. Polylactic acid (PLA) serves as the support layer 201, a fully biodegradable material. The functional material is mixed with PLA at a mass ratio of 3:7, dissolved and stirred using chloroform to obtain a stable membrane solution. This solution is then uniformly spread onto a PLA carrier film using a casting method. After temperature-controlled drying at 40–60℃, a functional composite membrane is formed. The membrane is laser-cut and then wound into a roll structure using a winding mechanism, finally spirally wound into a cylindrical structure. This results in a hydrophilic treatment layer 203, which reduces the contact angle and increases flux; a corn cob-modified functional layer 202, which improves strength and biodegradability; and a support layer 201, which provides mechanical strength and stability.
[0024] The membrane assembly 2 can filter from the outside in or from the inside out, depending on the application scenario. Wastewater enters the mounting housing 101 from the inlet pipe 103. If filtering from the outside in, the wastewater flows to the outer periphery of the membrane assembly 2 and gradually permeates into the interior of the support layer 201. Finally, it flows into the outlet pipe 104 through the inner pipe 301, thus filtering the water. The membrane assembly 2 and the mounting assembly 3 can be installed in a standard filter cartridge to form an independent and replaceable module.
[0025] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A spiral wound multi-stage membrane module structure for water filtration, characterized in that: include, The mounting assembly (1) includes a mounting shell (101), two covers (102) respectively disposed at both ends of the mounting shell (101), a water inlet pipe (103) disposed on the upper cover (102), and a water outlet pipe (104) disposed on the lower cover (102). A diaphragm assembly (2) is disposed within the mounting housing (101); A connecting component (3) is disposed on the cover (102) and connected to the diaphragm assembly (2).
2. The spiral wound multi-stage membrane module structure according to claim 1, characterized in that, The connecting assembly (3) includes an inner tube (301) disposed on the cover (102) and communicating with the water outlet pipe (104), two baffles (302) disposed on the mounting shell (101) and abutting against both ends of the membrane assembly (2), and two blocking blocks (303) disposed on the inner tube (301) and abutting against the baffles (302).
3. The spiral wound multi-stage membrane module structure according to claim 2, characterized in that, The membrane assembly (2) includes a support layer (201), a functional layer (202) and a processing layer (203) arranged sequentially from the inside to the outside; the support layer (201), the functional layer (202) and the processing layer (203) are wound in a spiral manner.
4. The spiral wound multi-stage membrane module structure according to claim 3, characterized in that, The inner tube (301) is disposed inside the support layer (201), and the baffle (302) abuts against the diaphragm assembly (2).
5. The spiral wound multi-stage membrane module structure according to claim 4, characterized in that, The support layer (201), the functional layer (202), and the processing layer (203) are formed by hot pressing.
6. The spiral wound multi-stage membrane module structure according to claim 5, characterized in that, The inner tube (301) has a porous structure and is connected to the water outlet pipe (104).