A circulating purification and reuse device based on ceramic membrane filtration

Abstract

This utility model discloses a circulating purification and reuse device based on ceramic membrane filtration, comprising: a horizontal cylinder, a ceramic flat plate membrane disposed on one side of the inner side of the horizontal cylinder, flanges fixedly fitted to both ends of the outer wall of the horizontal cylinder, a feeding assembly disposed above the horizontal cylinder, and a feeding component disposed inside the horizontal cylinder, the ceramic flat plate membrane being connected to the horizontal cylinder via an installation assembly. Through the cooperation of the horizontal cylinder, the ceramic flat plate membrane, the flanges, and the feeding assembly, backwashing is performed on the ceramic flat plate membrane to rinse the membrane surface and remove suspended solids and colloids. During this process, opening the valve and starting the liquid pump allows the chemical cleaning agent inside the storage tank to be discharged into the interior of the horizontal cylinder through connecting pipes and vertical pipes. The chemical cleaning agent mixes with the backwash water flow, enhancing the effect of removing inorganic salt scale, dissolving organic matter, and killing microorganisms and removing biofilm from the ceramic membrane surface. After a single backwashing operation, the ceramic membrane can easily return to its optimal filtration state.

Description

Technical Field

[0001] This utility model relates to the field of ceramic membrane filtration technology, and in particular to a circulating purification and reuse device based on ceramic membrane filtration. Background Technology

[0002] A circulating purification and reuse device based on ceramic membrane filtration is a system that utilizes ceramic membrane technology to achieve liquid circulation purification and resource reuse. Through the high-efficiency filtration performance of ceramic membranes, it separates impurities such as suspended solids, colloids, microorganisms, and organic matter from liquids, purifying the liquid and allowing it to be reused in production or other applications, thereby saving water resources and reducing pollution emissions.

[0003] The core component of this device is a ceramic membrane. After a period of use, suspended particles (such as silt and colloids) form a filter cake layer on the membrane surface, increasing fluid resistance and causing a decrease in flux. Therefore, backwashing is required. Currently, in the backwashing process of circulating purification and reuse devices based on ceramic membrane filtration, pressurized clean water is simply injected into the external water supply pipe at the original drain outlet. However, chemical cleaning agents cannot be effectively added to the backwash water flow. The effect on removing inorganic salt scale, dissolving organic matter, and killing microorganisms to remove biofilm on the ceramic membrane surface is relatively limited. After a single backwashing operation, it is not easy for the ceramic membrane to return to its optimal filtration state. Therefore, it is necessary to provide a circulating purification and reuse device based on ceramic membrane filtration to solve the above technical problems. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a circulating purification and reuse device based on ceramic membrane filtration. It can effectively add chemical cleaning agents to the backwash water flow, which enhances the effect of removing inorganic salt scale, dissolving organic matter and killing microorganisms to remove biofilm on the surface of ceramic membrane. After a single backwashing operation, it is easy for the ceramic membrane to return to the best filtration state.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A circulating purification and reuse device based on ceramic membrane filtration includes: a horizontal cylinder, a ceramic flat plate membrane disposed on one side of the inner side of the horizontal cylinder, flanges fixedly sleeved at both ends of the outer wall of the horizontal cylinder, a feeding assembly disposed above the horizontal cylinder, a feeding assembly disposed inside the horizontal cylinder, and the ceramic flat plate membrane being connected to the horizontal cylinder via an installation assembly.

[0006] Preferably, the feeding assembly includes: a liquid storage tank located above the horizontal cylinder, a cover plate threaded to the top of the horizontal cylinder, legs fixedly connected to both ends of the lower surface of the liquid storage tank, a connecting pipe between the two legs, the top end of the connecting pipe fixedly connected to the contact surface of the liquid storage tank, a vertical pipe fixedly connected to the bottom end of the connecting pipe, the vertical pipe fixedly connected to the contact surface of the horizontal cylinder, a liquid pump installed above the outer wall of the connecting pipe, valves on both sides of the liquid pump, and the valves also installed on the pipeline of the connecting pipe.

[0007] Preferably, an observation window is embedded and fixed to the outer wall of the liquid storage tank.

[0008] Preferably, the front side of the outer wall of the cross tube is provided with an installation direction indicator.

[0009] Preferably, the feeding assembly includes: a cavity ring, the cavity ring being fixedly connected to the bottom end of the vertical pipe, a horizontal pipe being rotatably connected to the inner wall of the cavity ring, a through groove being provided on the outer wall of the horizontal pipe, an impeller being fixedly connected to one end of the horizontal pipe, a round pipe being fixedly connected to the other end of the horizontal pipe, and a plurality of liquid outlet holes being uniformly provided on the outer wall of the round pipe.

[0010] Preferably, a spiral blade is fixed to the inner wall of the cross cylinder.

[0011] Preferably, the mounting assembly includes: a first ring and a second ring. The first ring is located on one side of the ceramic flat film and is fixedly connected to the cross cylinder. The second ring is located on the other side of the ceramic flat film. A plurality of bolts are inserted into the surface of the second ring. The bolts pass through the second ring and the ceramic flat film in sequence and are threadedly connected to the first ring. A protective sleeve is provided on the outside of the bolts. The protective sleeve is threadedly connected to the second ring. A collar is fixedly sleeved on the outer wall of the protective sleeve. A rubber ring is fixedly attached to one side surface of the collar and abuts against the second ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) In this utility model, through the cooperation between the horizontal cylinder, ceramic flat plate membrane, flange and feeding component, the user first uses the flange to install the horizontal cylinder at the outlet of the wastewater to be filtered, and connects the flange on the other side to the receiving water pipe after filtration. During the discharge of wastewater into the horizontal cylinder, the ceramic flat plate membrane can filter the wastewater in the path. The filtered water can be purified and reused. After long-term use, a filter cake layer is formed on the surface of the ceramic flat plate membrane, which increases the fluid resistance and causes the flux to decrease. When this happens, the filtration operation of the ceramic flat plate membrane is stopped, and clean water flow in the opposite direction is injected into the interior of the horizontal cylinder to perform backwashing operation on the ceramic flat plate membrane, rinse the membrane surface, and remove suspended solids and colloids. During this process, the valve is opened and the liquid pump is started, which can discharge the chemical cleaning agent inside the storage tank into the interior of the horizontal cylinder through the connecting pipe and the vertical pipe. The chemical cleaning agent will be mixed with the backwash water flow, which enhances the effect of removing inorganic salt scale, dissolving organic matter and killing microorganisms and removing biofilm on the surface of the ceramic membrane. After a single backwashing operation, it is easy for the ceramic membrane to return to the best filtration state. (2) In this utility model, through the cooperation between the horizontal cylinder, ceramic flat membrane, flange, feeding assembly and feeding assembly, the chemical cleaning agent discharged from the bottom of the vertical pipe can pass through the through groove, horizontal pipe and round pipe in sequence and be discharged from the liquid outlet. During this period, the water flow generates an impact force on the impeller, which will cause the impeller, horizontal pipe and round pipe to rotate. The rotating round pipe can make the chemical cleaning agent sprayed from the liquid outlet evenly mixed into the water flow, so that the chemical cleaning agent can be evenly applied to the ceramic flat membrane. (3) In this utility model, through the cooperation between the horizontal cylinder, the ceramic flat membrane, the flange and the installation components, the horizontal cylinder can be disassembled when the device is not in use. The ceramic flat membrane can be removed by rotating the protective cylinder and the bolt counterclockwise in sequence. This makes it convenient for users to maintain and replace the ceramic flat membrane. The protective cylinder can protect the connection of the bolts and facilitate disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Front view partial sectional view; Figure 3 for Figure 2 A magnified view of a portion of the image; Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0014] The corresponding names of the attached figures are as follows: 1-Horizontal cylinder, 2-Ceramic flat membrane, 3-Flange, 4-Liquid storage tank, 5-Cover plate, 6-Support leg, 7-Connecting pipe, 8-Vertical pipe, 9-Liquid pump, 10-Valve, 11-Observation window, 12-Cavity ring, 13-Horizontal pipe, 14-Through groove, 15-Impeller, 16-Round pipe, 17-Liquid outlet, 18-Spiral blade, 19-First ring, 20-Second ring, 21-Bolt, 22-Cylinder, 23-Collar ring, 24-Rubber ring, 25-Installation direction indicator. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0016] Example 1: As Figure 1-4 As shown, this utility model provides a circulating purification and reuse device based on ceramic membrane filtration, which includes: a horizontal cylinder 1, and a ceramic flat plate membrane 2 provided on one side of the interior of the horizontal cylinder 1. The ceramic flat plate membrane 2 is an inorganic porous material with high strength, high temperature resistance, corrosion resistance and pollution resistance. Its filtration process is based on sieving and adsorption retention. Sieving: The membrane surface and internal pore size distribution are uniform, allowing small molecules (such as water molecules) to pass through the membrane pores, while large molecules (such as suspended solids, colloids, bacteria, etc.) are retained. Adsorption retention: The membrane surface is charged or has special chemical properties, which can adsorb some dissolved organic matter and heavy metal ions. It is worth noting that the liquid to be treated first passes through pretreatment steps such as grid, sedimentation, and flocculation to remove large particulate impurities and reduce the filtration load on the ceramic membrane. The specific constituent materials of the ceramic flat plate membrane 2 are inorganic materials such as alumina, zirconium oxide, and titanium oxide. Flanges 3 are fixedly sleeved at both ends of the outer wall of the horizontal cylinder 1. The flanges 3 are used for the installation of the horizontal cylinder 1. A feeding assembly is provided above the horizontal cylinder 1, and a feeding assembly is provided inside the horizontal cylinder 1. The ceramic flat plate membrane is connected to the horizontal cylinder 1 through the installation assembly.

[0017] Example 2: The feeding assembly includes: a liquid storage tank 4, located above the horizontal cylinder 1. The liquid storage tank 4 is filled with a chemical cleaning agent, which can be one of dilute hydrochloric acid solution, sodium hydroxide solution, or sodium hypochlorite solution. The dilute hydrochloric acid (1-3%) is used to remove inorganic scale (such as calcium carbonate), sodium hydroxide (0.5-2%) is used to dissolve organic matter (such as grease and protein), and sodium hypochlorite (50-500 g / L) is used to dissolve organic matter (such as grease and protein). (ppm) to kill microorganisms and remove biofilm. The specific chemical cleaning agent used depends on the composition of the wastewater under actual use. Of course, it can also be used in batches. The top of the horizontal cylinder 1 is threaded with a cover plate 5. Both ends of the lower surface of the storage tank 4 are fixedly connected with support legs 6. A connecting pipe 7 is provided between the two support legs 6. The top of the connecting pipe 7 is fixedly connected to the contact surface of the storage tank 4. The bottom of the connecting pipe 7 is fixedly connected with a vertical pipe 8. The connecting pipe 7 is interconnected with the vertical pipe 8 and the interior of the storage tank 4. The vertical pipe 8 is fixedly connected to the contact surface of the horizontal cylinder 1. A liquid pump 9 is installed on the upper part of the outer wall of the connecting pipe 7. The model of the liquid pump 9 is not limited, as long as it meets the needs of use. The operation of the liquid pump 9 can extract the chemical cleaning agent inside the storage tank 4. Valves 10 are provided on both sides of the liquid pump 9. The valves 10 are also installed on the pipeline of the connecting pipe 7. The valves 10 are normally closed and are opened when the chemical cleaning agent is injected.

[0018] Example 3: An observation window 11 is embedded and fixed to the outer wall of the liquid storage tank 4. The observation window 11 is made of transparent tempered glass, which allows external users to easily observe the remaining chemical cleaning agent inside the liquid storage tank 4.

[0019] Example 4: An installation direction indicator 25 is provided on the front side of the outer wall of the horizontal cylinder 1, which can provide the installer with the correct installation direction of the horizontal cylinder 1.

[0020] Example 5: The feeding assembly includes: a cavity ring 12, which is fixed to the bottom end of the vertical pipe 8 and is interconnected with the vertical pipe 8. A horizontal pipe 13 is rotatably connected to the inner wall of the cavity ring 12. The cavity ring 12 is rotatably connected to the horizontal pipe 13 through a sealed bearing. A through groove 14 is provided on the outer wall of the horizontal pipe 13. An impeller 15 is fixed to one end of the horizontal pipe 13 and a round pipe 16 is fixed to the other end of the horizontal pipe 13. The round pipe 16 is interconnected with the horizontal pipe 13 and a plurality of liquid outlet holes 17 are evenly provided on the outer wall of the round pipe 16.

[0021] Example 6: A spiral blade 18 is fixed to the inner wall of the horizontal cylinder 1. When water flows through the spiral blade 18, it can play a spiral guiding role, so that the backwash water forms a rotating water flow and enhances the shear force on the membrane wall.

[0022] Example 7: The installation assembly includes a first ring 19 and a second ring 20. The first ring 19 is located on one side of the ceramic flat membrane 2 and is fixedly connected to the horizontal cylinder 1. The second ring 20 is located on the other side of the ceramic flat membrane 2. Multiple bolts 21 are inserted into the surface of the second ring 20. The bolts 21 pass through the second ring 20 and the ceramic flat membrane 2 in sequence and are threadedly connected to the first ring 19. A protective sleeve 22 is provided on the outside of the bolts 21. The protective sleeve 22 is threadedly connected to the second ring 20. A collar 23 is fixedly sleeved on the outer wall of the protective sleeve 22. A rubber ring 24 is fixedly attached to one side surface of the collar 23. The rubber ring 24 is made of fluororubber and abuts against the second ring 20. A hexagonal groove is opened on the surface of the protective sleeve 22 away from the center of the bolts 21, which can be inserted into a hexagonal wrench to facilitate the rotation of the protective sleeve 22.

[0023] In use, the user first installs the horizontal cylinder 1 at the outlet of the wastewater to be filtered using flange 3, and connects the other flange 3 to the receiving water pipe after filtration. During the discharge of wastewater into the horizontal cylinder 1, the ceramic flat plate membrane 2 filters the wastewater passing through. The filtered water can be purified and reused. After prolonged use, a filter cake layer forms on the surface of the ceramic flat plate membrane 2, increasing fluid resistance and causing a decrease in flux. At this point, the filtration operation of the ceramic flat plate membrane 2 is stopped, and clean water is injected into the horizontal cylinder 1 in the opposite direction to perform a backwashing operation on the ceramic flat plate membrane 2, rinsing the membrane surface and removing suspended solids and colloids. During this process, valve 10 is opened and the liquid pump 9 is started, which allows the chemical cleaning agent inside the storage tank 4 to be discharged from the outlet through connecting pipe 7, vertical pipe 8, through groove 14, horizontal pipe 13 and round pipe 16. 17 is discharged, during which the water flow impacts the impeller 15, causing the impeller 15, horizontal tube 13, and circular tube 16 to rotate. The rotating circular tube 16 allows the chemical cleaning agent sprayed from the outlet 17 to be evenly mixed into the water flow, facilitating the uniform action of the chemical cleaning agent on the ceramic flat plate membrane 2. This enhances the effect of removing inorganic salt scale, dissolving organic matter, and killing microorganisms and removing biofilm from the ceramic membrane surface. After a single backwashing operation, the ceramic membrane can easily return to its optimal filtration state. When the device is not in use, the horizontal tube 1 can be disassembled. The ceramic flat plate membrane 2 can be removed by rotating the protective sleeve 22 and bolt 21 counterclockwise. This facilitates the maintenance and replacement of the ceramic flat plate membrane 2 by the user. The protective sleeve 22 protects the connection of the bolt 21, making disassembly easy.

[0024] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cyclic purification and reuse apparatus based on ceramic membrane filtration, characterized by, include: A horizontal cylinder (1) is provided with a ceramic flat plate membrane (2) on one side inside the horizontal cylinder (1). Flanges (3) are fixedly sleeved at both ends of the outer wall of the horizontal cylinder (1). A feeding assembly is provided above the horizontal cylinder (1). A feeding assembly is provided inside the horizontal cylinder (1). The ceramic flat plate membrane is connected to the horizontal cylinder (1) through an installation assembly.

2. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 1, characterized in that, The feeding assembly includes: a liquid storage tank (4), which is located above the horizontal cylinder (1). The top end of the horizontal cylinder (1) is threaded with a cover plate (5). Both ends of the lower surface of the liquid storage tank (4) are fixedly connected with support legs (6). A connecting pipe (7) is provided between the two support legs (6). The top end of the connecting pipe (7) is fixedly connected to the contact surface of the liquid storage tank (4). The bottom end of the connecting pipe (7) is fixedly connected with a vertical pipe (8). The vertical pipe (8) is fixedly connected to the contact surface of the horizontal cylinder (1). A liquid pump (9) is installed on the upper part of the outer wall of the connecting pipe (7). Valves (10) are provided on both sides of the liquid pump (9). The valves (10) are also installed on the pipeline of the connecting pipe (7).

3. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 2, characterized in that, An observation window (11) is embedded and fixed to the outer wall of the liquid storage tank (4).

4. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 1, characterized in that, The front side of the outer wall of the cross tube (1) is provided with an installation direction indicator (25).

5. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 1, characterized in that, The feeding assembly includes: a cavity ring (12), which is fixed to the bottom end of the vertical pipe (8). A horizontal pipe (13) is rotatably connected to the inner wall of the cavity ring (12). A through groove (14) is opened on the outer wall of the horizontal pipe (13). An impeller (15) is fixed to one end of the horizontal pipe (13). A round pipe (16) is fixed to the other end of the horizontal pipe (13). A plurality of liquid outlet holes (17) are evenly opened on the outer wall of the round pipe (16).

6. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 1, characterized in that, The inner wall of the cross cylinder (1) is fixed with a spiral blade (18).

7. The device for purification and reuse of circulating water based on ceramic membrane filtration according to claim 1, characterized in that, The installation assembly includes a first ring (19) and a second ring (20). The first ring (19) is located on one side of the ceramic flat film (2) and is fixedly connected to the cross cylinder (1). The second ring (20) is located on the other side of the ceramic flat film (2). A plurality of bolts (21) are inserted into the surface of the second ring (20). The bolts (21) pass through the second ring (20) and the ceramic flat film (2) in sequence and are threadedly connected to the first ring (19). A protective sleeve (22) is provided on the outside of the bolts (21). The protective sleeve (22) is threadedly connected to the second ring (20). A collar (23) is fixedly sleeved on the outer wall of the protective sleeve (22). A rubber ring (24) is fixedly attached to one side surface of the collar (23). The rubber ring (24) abuts against the second ring (20).

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