Ceramic membrane flux and average aperture detection device

Abstract

The utility model discloses a ceramic membrane flux and average pore size detection device, and relates to the technical field of filter membrane tube application, the ceramic membrane flux and average pore size detection device comprises a base, a left and right plugging displacement mechanism, a support mechanism, a filter membrane tube assembly, an inlet and outlet pipeline detection assembly and a control system, one side of the left-right plugging displacement mechanism is provided with an execution assembly, the front side of the left-right plugging displacement mechanism is connected with a displacement seat, the displacement seat is provided with a plugging head seat, the filter membrane pipe assembly is supported by a supporting mechanism and installed on the left-right plugging displacement mechanism, and a detection medium flows through a filter membrane pipe through an inlet pipeline detection assembly on one side and flows out from an outlet pipeline detection assembly on the other side. The pressure and flow of the inlet and outlet detection assembly are adjusted, and the flux and average pore size of the ceramic membrane are obtained by measuring the flow of liquid and the pressure difference between two sides of the membrane.

Description

Technical Field

[0001] This invention relates to the field of ceramic membrane tube filtration technology, specifically to a device for detecting the flux and average pore size of ceramic filter membrane tubes. Background Technology

[0002] Membrane separation technology boasts advantages such as high separation efficiency, low energy consumption, and small footprint. It is also easily coupled with other separation processes to achieve integrated applications of separation technologies, and has been widely used in numerous industries including water treatment, chemical engineering, pharmaceuticals, biotechnology, beverages, food, and metallurgy. Classified by membrane process, it mainly includes microfiltration, ultrafiltration, nanofiltration, reverse osmosis, gas separation, pervaporation, and dialysis, among which ultrafiltration membranes are widely used in water treatment.

[0003] Based on the materials used in membrane fabrication, membranes are mainly classified into organic membranes, inorganic membranes, and organic-inorganic composite membranes. Organic membranes, such as polyvinylidene fluoride (PVDF), polysulfone (PSF), polyamide, polyethersulfone (PES), and cellulose acetate (CA), dominate the membrane market due to their low cost and ease of scale-up. Inorganic membranes, primarily composed of alumina (Al₂O₃), silicon dioxide (SiO₂), titanium dioxide (TiO₂), zirconium oxide (ZrO₂), and silicon carbide (SiC), possess high thermal stability, chemical stability, and mechanical strength, making them suitable for applications in harsh environments.

[0004] Ceramic membranes (tubular or flat sheet membranes) used in industrial applications are typically manufactured using extrusion molding, which can lead to uneven mixing during the molding process. Furthermore, to prevent membrane particles from penetrating the support pores, a multi-layered structure is generally employed, consisting of a support, transition layer, and membrane layer, sometimes requiring 2-5 transition layers. This multi-layered structure results in a lengthy membrane fabrication process, increasing the likelihood of defects and affecting membrane quality. Currently, the maximum pore size and pure water flux of the membrane tube are typically measured using two separate devices, a lengthy and inefficient process. This device enables rapid testing and determination, ensuring that the ceramic membrane quality meets the requirements of the application scenario. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus for detecting the flux and average pore size of ceramic filter membrane tubes, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A ceramic membrane flux detection device, relating to the field of filter membrane tube application technology, includes a base, a left and right sealing displacement detection mechanism, a support mechanism, a filter membrane tube assembly, a control system, and inlet and outlet pipelines. The upper part of the base has the left and right sealing displacement detection mechanism and the support mechanism. An execution component is provided on one side of the left and right sealing displacement detection mechanism, and a displacement seat is connected to the front side. The displacement seat is equipped with a sealing head seat. The filter membrane tube assembly is supported by the support mechanism and installed on the left and right sealing displacement detection mechanism. The detection medium flows through the inlet pipeline, through the inlet pressure detection component, the inlet flow detection component, and the inlet regulating component to the membrane tube. From the outlet of the other pipeline, it flows through the outlet regulating component, the outlet flow detection component, and the outlet pressure detection component before flowing out to the outlet pipeline.

[0008] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0009] 1. This device can simultaneously detect the flux and average pore size of ceramic membranes, which can effectively shorten the number of operations and reduce the equipment footprint;

[0010] 2. This device is highly versatile and practical. By replacing the appropriate adjustment components and pressure and flow detection components, it can detect the flow and pressure of liquid media and air ceramic membrane tubes.

[0011] 3. Modular and convenient: It can adapt to the testing requirements of ceramic membrane tubes of various diameters by quickly replacing the matching plug head.

[0012] 4. The device provides stable and reliable testing quality. By manually or automatically controlling and adjusting the inlet and outlet flow rates and pressures, it enables flux and pressure testing for various ceramic membrane filtration applications, reducing production and maintenance costs, contributing to industry development, and yielding significant economic benefits. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a front view schematic diagram of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a side sectional view of the present invention;

[0017] The numbers in the diagram represent the following:

[0018] 1. Base;

[0019] 2. Displacement detection mechanism; 201. Actuating component; 202. Displacement seat; 203. Sealing head seat; 204. Pipeline inlet; 205. Pipeline outlet; 206. Inlet pipeline; 207. Inlet pressure detection component; 208. Inlet flow detection component; 209. Inlet regulating component; 210. Outlet regulating component; 211. Outlet flow detection component; 212. Outlet pressure detection component; 213. Outlet pipeline;

[0020] 3. Support mechanism; 301. Roller; 302. Roller seat; 303. Roller shaft;

[0021] 4. Filter membrane tube assembly; 401. Membrane tube; 402. Sealing head; 403. Sealing ring;

[0022] 5. Control system. Detailed Implementation

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Please see Figure 1-3 The present invention provides the following technical solution:

[0025] A ceramic membrane flux detection device, relating to the field of filter membrane tube application technology, includes a base 1, a left and right sealing displacement detection mechanism 2, a support mechanism 3, a filter membrane tube assembly 4, a control system 5, and inlet and outlet pipelines.

[0026] The upper part of the base 1 has a left and right sealing displacement detection mechanism 2 and a support mechanism 3. The left and right sealing displacement detection mechanism 2) is provided with an execution component 201 on one side and a displacement seat 202 connected to the front side. The displacement seat 202 is equipped with a sealing head seat 203. The filter membrane tube assembly 4 is supported by the support mechanism 3 and installed on the left and right sealing displacement detection mechanism 2. The detection medium flows through the inlet pipe 206 through the inlet pressure detection component 207, the inlet flow detection component 208, and the inlet adjustment component 209 to the membrane tube 401. It flows from the outlet pipe 205 on the other side through the outlet adjustment component 210, the outlet flow detection component 211, and the outlet pressure detection component 212, and then flows out to the outlet pipe 213. The pressure and flow of the inlet and outlet are adjusted to detect the flux of the medium flowing out of a single channel or multiple channels. The flow of the inlet and outlet is calculated to obtain the membrane tube permeation flux value. The methods for determining the average pore size of the membrane tubes using the above components are shown in Table 1. These methods include gas removal and liquid-liquid removal. Gas removal involves using gas to remove the wetting agent from the pores of the ceramic microporous filter membrane (after pre-wetting the membrane tube). The average pore size is obtained by measuring the gas flow rate and the pressure difference across the membrane. Liquid-liquid removal uses a liquid with slightly lower wettability that is immiscible with the wetting liquid to replace the gas, removing the wetting liquid from the pores of the sample. The average pore size is obtained by measuring the liquid flow rate and the pressure difference across the membrane. Specific parameters are as follows:

[0027] Table 1. Wetting agents and penetrants used for different pore sizes

[0028]

[0029] The capillary action in the membrane pores is determined according to the Laplace equation:

[0030]

[0031] In the formula: D m —Average pore size, μm;

[0032] P m —The pressure across the membrane when the wet film flow rate is half that of the dry film flow rate, in MPa;

[0033] σ—Interfacial tension between two liquids, N / m.

[0034] The support mechanism 3 includes a roller 301, and a roller shaft 303 passes through the center ends of the roller 301 and is connected to the roller seat 302.

[0035] The filter membrane tube assembly 4 includes a membrane tube 401, with sealing heads 402 installed on the left and right sides of the membrane tube 401. The sealing heads are equipped with sealing rings 403 that are sealed to the end face of the membrane tube 401.

[0036] The filter membrane tube assembly 4, the sealing heads 402 on both sides of the membrane tube 401, have single channels or multiple channels.

[0037] The control system 5 is connected to the execution component 201, the inlet pressure detection component 207, the inlet flow detection component 208, the inlet regulating component 209, the outlet regulating component 210, the outlet flow detection component 211, and the outlet pressure detection component 212, and records and controls them in real time.

[0038] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ceramic membrane flux and average pore size detection device, relating to the field of filter membrane tube application technology, comprising a base (1), a left and right sealing displacement detection mechanism (2), a support mechanism (3), a filter membrane tube assembly (4), a control system (5), and inlet and outlet pipelines, wherein the upper part of the base (1) is provided with the left and right sealing displacement detection mechanism (2) and the support mechanism (3), an execution component (201) is provided on one side of the left and right sealing displacement detection mechanism (2), and a displacement seat (202) is connected to the front side, and a sealing head seat (203) is installed on the displacement seat (202). The filter membrane tube assembly (4) is supported by the support mechanism (3) and installed on the left and right sealing displacement detection mechanism (2), characterized in that: The detection medium flows through the inlet pipe (206) through the inlet pressure detection component (207), the inlet flow detection component (208), and the inlet regulating component (209) into the membrane tube (401). It then flows out from the outlet pipe (205) through the outlet regulating component (210), the outlet flow detection component (211), and the outlet pressure detection component (212) to the outlet pipe (213).

2. The ceramic membrane flux and average pore size detection device according to claim 1, characterized in that: The support mechanism (3) includes a roller (301), and the roller shaft (303) passes through the center of the roller (301) and is connected to the roller seat (302).

3. The ceramic membrane flux and average pore size detection device according to claim 1, characterized in that: The filter membrane tube assembly (4) includes a membrane tube (401), and a sealing head (402) is installed on the left and right sides of the membrane tube (401). The sealing head is equipped with a sealing ring (403) which is sealed to the end face of the membrane tube (401).

4. The ceramic membrane flux and average pore size detection device according to claim 1, characterized in that: The sealing heads (402) on both sides of the membrane tube (401) have single or multiple channels.

5. The ceramic membrane flux and average pore size detection device according to claim 1, characterized in that: The control system (5) is connected to the execution component (201), the inlet pressure detection component (207), the inlet flow detection component (208), the inlet regulating component (209), the outlet regulating component (210), the outlet flow detection component (211), and the outlet pressure detection component (212) and records and controls them in real time.

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