PTFE membrane preparation method capable of improving anti-pollution performance of membrane

Abstract

The invention discloses a PTFE membrane preparation method for improving the anti-pollution performance of a membrane, and relates to the field of hollow fiber membrane modules.The PTFE membrane preparation method comprises an upper U-shaped fixing frame and a lower U-shaped fixing frame, a plurality of supporting rods are connected between the upper U-shaped fixing frame and the lower U-shaped fixing frame, and a plurality of U-shaped mounting frames are arranged in the upper U-shaped fixing frame and the lower U-shaped fixing frame; a plurality of sleeves are arranged on the opposite sides of the two opposite U-shaped mounting racks, a hollow fiber membrane bundle is connected between the two opposite sleeves, and aeration plates are arranged in the U-shaped mounting racks. The air inlet connector is connected with an air compressor, compressed air is conveyed into the flow dividing pipe and enters the multiple aeration plates through the flow dividing pipe, then the air is blown out through the aeration holes in the aeration plates, the air blown out of the aeration holes cleans the surface of the hollow fiber membrane bundle, the aeration hole in the uppermost side blows the blades to rotate, and the aeration effect is improved. Therefore, the hollow fiber membrane bundle is driven to rotate, and the hollow fiber membrane bundle can be comprehensively cleaned.

Description

Technical Field

[0001] The present invention relates to the field of hollow fiber membrane modules, and particularly relates to a method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane. Background Art

[0002] Hollow fiber membrane modules are mainly used for sewage treatment in fields such as municipal, electric power, steel, petrochemical, textile, and food. Currently, when using hollow fiber membrane modules, after being used for a period of time, a large amount of impurities are likely to adhere to the surface of the hollow fiber membrane bundle, which will affect the water filtration effect of the hollow fiber membrane bundle. For example, a hollow fiber membrane module proposed in the patent publication number CN206577605U. In this patent, the branch pipes are uniformly arranged between the U-shaped membrane filaments and are arranged parallel to the U-shaped membrane filaments. The gas blown out from the air holes can only clean the corresponding membrane filament surface, and the cleaning range is small.

[0003] Therefore, it is necessary to invent a method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane, including an upper U-shaped fixing frame and a lower U-shaped fixing frame. A plurality of support rods are connected between the upper U-shaped fixing frame and the lower U-shaped fixing frame. A plurality of U-shaped mounting frames are arranged in the upper U-shaped fixing frame and the lower U-shaped fixing frame. A plurality of sleeves are arranged on the opposite sides of the two opposite U-shaped mounting frames. A hollow fiber membrane bundle is connected between the two opposite sleeves. An aeration plate is arranged in the U-shaped mounting frame. The aeration plate is connected to the side walls of the upper U-shaped fixing frame and the lower U-shaped fixing frame. A plurality of air holes are opened on the left and right sides of the aeration plate. A shunt pipe is connected to the top of the upper U-shaped fixing frame. The bottom of the shunt pipe is communicated with a plurality of aeration plates. An air inlet joint is connected to the top of the shunt pipe. Vanes are connected to the outer walls of the upper sleeves. Sealing plates are arranged on the front sides of the upper U-shaped fixing frame and the lower U-shaped fixing frame. Locking cylinders are connected to the left and right sides of the upper U-shaped fixing frame and the lower U-shaped fixing frame. A locking assembly is arranged in the locking cylinder.

[0006] Preferably, insertion plates are connected to the rear sides of the two horizontal parts of the U-shaped mounting frame. Corresponding slots are opened on the rear inner walls of the upper U-shaped fixing frame and the lower U-shaped fixing frame for the insertion plates.

[0007] Preferably, the locking assembly includes a spring connected to the inside of the locking cylinder. The other end of the spring is connected to a locking rod. Two insertion rods are connected to the rear side of the sealing plate. Locking grooves corresponding to the insertion rods are formed on the front sides of the upper U-shaped fixing bracket and the lower U-shaped fixing bracket. A locking hole corresponding to the locking rod is formed on the side wall of the insertion rod.

[0008] Preferably, a plurality of limiting rods are connected to the rear side of the sealing plate. Limiting grooves corresponding to the limiting rods are formed on the front sides of the plurality of U-shaped mounting brackets.

[0009] Preferably, a pull rod is connected to the side wall of the locking rod. A through hole corresponding to the pull rod is formed on the side wall of the locking cylinder. The other end of the pull rod is connected to a pull ring.

[0010] Preferably, a handle is connected to the front side of the sealing plate.

[0011] The technical effects and advantages of the present invention: By connecting the air inlet joint to an air compressor, compressed gas is transported into the shunt pipe, enters into a plurality of aeration plates through the shunt pipe, and the gas is blown out through the air holes on the aeration plates. The gas blown out through the air holes cleans the surface of the hollow fiber membrane bundle, and the air hole on the uppermost side blows the blades to rotate, thereby driving the hollow fiber membrane bundle to rotate, so as to comprehensively clean the hollow fiber membrane bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is of the present invention Figure 1 a schematic sectional structure diagram; Figure 3 is of the present invention Figure 1 a schematic top view structure diagram; Figure 4 is of the present invention Figure 2 an enlarged structure diagram of part A; Figure 5 is of the present invention Figure 3 an enlarged structure diagram of part B.

[0013] In the figure: 1, upper U-shaped fixing bracket; 2, lower U-shaped fixing bracket; 3, support rod; 4, U-shaped mounting bracket; 5, sleeve; 6, hollow fiber membrane bundle; 7, aeration plate; 8, shunt pipe; 9, locking assembly; 91, spring; 92, locking rod; 93, insertion rod; 10, air inlet joint; 11, blade; 12, sealing plate; 13, locking cylinder; 14, insertion plate; 15, limiting rod; 16, pull rod; 17, pull ring; 18, handle. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] The present invention provides Figures 1-5 The method for preparing a PTFE membrane with improved anti-pollution performance of the membrane shown in the figure comprises an upper U-shaped fixing frame 1 and a lower U-shaped fixing frame 2, a plurality of support rods 3 are connected between the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2, a plurality of U-shaped mounting frames 4 are arranged in the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2, a plurality of sleeves 5 are rotatably arranged on opposite sides of the two opposite U-shaped mounting frames 4, a hollow fiber membrane bundle 6 is connected between the two opposite sleeves 5, the hollow fiber membrane bundle 6 is made of a super-wet polytetrafluoroethylene membrane, and the super-wet polytetrafluoroethylene membrane has a separation The sub-brush is designed with self-cleaning and anti-fouling properties, the interface hydration layer constructs anti-fouling properties and the interface silane grafting antibacterial properties, which can filter pollutants efficiently. An aeration plate 7 is arranged in the U-shaped mounting frame 4, and the aeration plate 7 is connected to the side walls of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2. The rear side of the aeration plate 7 is fixedly connected to the rear inner walls of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2, so that the aeration plate 7 can be located between multiple hollow fiber membrane bundles 6. Multiple aeration holes are opened on the left and right sides of the aeration plate 7. The top of the upper U-shaped fixing frame 1 is connected to a shunt pipe 8. The shunt pipe 8 is connected to the top of the upper U-shaped fixing frame 1. The bottom of the flow pipe 8 is connected to a plurality of aeration plates 7, the top of the shunt pipe 8 is connected to an air inlet connector 10, and the outer wall of the upper sleeve 5 is fixedly connected to a blade 11. The water level to be filtered is lower than the height of the blade 11, so that when the gas is blown out through the aeration hole, there will be no problem of increased resistance due to the blade 11 in the water, so that the blade 11 can be blown by the gas to rotate. When there are many impurities on the surface of the hollow fiber membrane bundle 6, the compressed gas is transported to the shunt pipe 8 by connecting the air inlet connector 10 to the air compressor, and then the compressed gas is blown out through the air compressor. The shunt pipe 8 enters into a plurality of aeration plates 7, and then blows out the gas through the aeration holes on the aeration plates 7. The gas blown out of the aeration holes cleans the surface of the hollow fiber membrane bundle 6, and the aeration holes on the uppermost side blow the blades 11 to rotate, thereby driving the hollow fiber membrane bundle 6 to rotate, and the hollow fiber membrane bundle 6 can be fully cleaned. The front sides of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2 are both provided with sealing plates 12, and the left and right sides of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2 are both fixedly connected with locking cylinders 13, and the locking cylinders 13 are provided with locking components 9.

[0016] The rear sides of the two horizontal parts of the U-shaped mounting frame 4 are connected with plug plates 14, and the rear inner walls of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2 are provided with slots corresponding to the plug plates 14, which can conveniently improve the stability of the hollow fiber membrane bundle 6.

[0017] The locking assembly 9 includes a spring 91 fixedly connected to the locking cylinder 13, the other end of the spring 91 is connected to a locking rod 92, and two plug rods 93 are fixedly connected to the rear side of the sealing plate 12. The front sides of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2 are provided with locking grooves corresponding to the plug rods 93, and the left and right sides of the upper U-shaped fixing frame 1 and the lower U-shaped fixing frame 2 are provided with through holes corresponding to the locking rods 92, which can be used for the locking rod 92 to be telescopically moved, and the side walls of the plug rod 93 are provided with locking holes corresponding to the locking rod 92. The front side of the locking rod 92 is set as an inclined surface, and when the plug rod 93 is inserted into the locking groove, the plug rod 93 can be used to squeeze the inclined surface of the locking rod 92, so that the locking rod 92 is retracted into the locking cylinder 13 through friction, so that the plug rod 93 can be directly inserted into the locking groove and locked.

[0018] A plurality of limiting rods 15 are fixedly connected to the rear side of the sealing plate 12 , and limiting grooves corresponding to the limiting rods 15 are provided on the front sides of the plurality of U-shaped mounting frames 4 , which can conveniently improve the stability of the hollow fiber membrane bundle 6 .

[0019] The side wall of the locking rod 92 is connected to the pull rod 16, and the side wall of the locking cylinder 13 is provided with a through hole corresponding to the pull rod 16. The other end of the pull rod 16 is fixedly connected to a pull ring 17. By pulling the pull ring 17, the pull ring 17 pulls the pull rod 16, and the pull rod 16 pulls the locking rod 92, and the locking rod 92 is pulled into the locking cylinder 13. At this time, the insertion rod 93 can be taken out of the slot.

[0020] A handle 18 is fixedly connected to the front side of the sealing plate 12 , and the sealing plate 12 can be conveniently pulled by pulling the handle 18 .

[0021] Working principle of the present invention: By connecting the air inlet connector 10 to the air compressor, the compressed gas is transported to the shunt pipe 8, and enters into the multiple aeration plates 7 through the shunt pipe 8, and then the gas is blown out through the aeration holes on the aeration plates 7. The gas blown out of the aeration holes cleans the surface of the hollow fiber membrane bundle 6, and the aeration holes on the uppermost side blow the blades 11 to rotate, thereby driving the hollow fiber membrane bundle 6 to rotate, and the hollow fiber membrane bundle 6 can be fully cleaned. When the hollow fiber membrane bundle 6 needs to be disassembled, the pull ring 17 is pulled, the pull ring 17 pulls the pull rod 16, and the pull rod 16 pulls the locking rod 92, and the locking rod 92 is pulled into the locking cylinder 13. At this time, the insertion rod 93 can be taken out from the slot, the sealing plate 12 can be removed, and the U-shaped mounting frame 4 is pulled to remove the hollow fiber membrane bundle 6 for cleaning.

[0022] Finally, it should be noted that the above are only the 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 recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing a PTFE membrane with improved anti-pollution performance of the membrane, comprising an upper U-shaped fixing frame and a lower U-shaped fixing frame, wherein a plurality of support rods are connected between the upper U-shaped fixing frame and the lower U-shaped fixing frame, characterized in that: A plurality of U-shaped mounting frames are arranged in the upper U-shaped mounting frame and the lower U-shaped mounting frame, a plurality of sleeves are arranged on opposite sides of the two relative U-shaped mounting frames, a hollow fiber membrane bundle is connected between the two relative sleeves, an aeration plate is arranged in the U-shaped mounting frame, the aeration plate is connected to the side walls of the upper U-shaped mounting frame and the lower U-shaped mounting frame, a plurality of aeration holes are arranged on the left and right sides of the aeration plate, a shunt pipe is connected to the top of the upper U-shaped mounting frame, the bottom of the shunt pipe is communicated with a plurality of aeration plates, an air inlet joint is connected to the top of the shunt pipe, a blade is connected to the outer wall of the upper sleeve, a sealing plate is arranged on the front side of the upper U-shaped mounting frame and the lower U-shaped mounting frame, a locking cylinder is connected to the left and right sides of the upper U-shaped mounting frame and the lower U-shaped mounting frame, a locking assembly is arranged in the locking cylinder.

2. A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane according to claim 1, characterized in that: The rear sides of the two horizontal parts of the U-shaped mounting frame are connected with plugging plates, and the rear inner walls of the upper U-shaped fixing frame and the lower U-shaped fixing frame are provided with slots corresponding to the plugging plates.

3. A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane according to claim 2, characterized in that: The locking assembly includes a spring connected to the locking cylinder, the other end of the spring is connected to a locking rod, the rear side of the sealing plate is connected to two insertion rods, the front sides of the upper U-shaped fixing frame and the lower U-shaped fixing frame are both provided with locking grooves corresponding to the insertion rods, and the side walls of the insertion rods are provided with locking holes corresponding to the locking rods.

4. A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane according to claim 3, characterized in that: A plurality of limiting rods are connected to the rear side of the sealing plate, and limiting grooves corresponding to the limiting rods are provided on the front sides of the plurality of U-shaped mounting frames.

5. A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane according to claim 4, characterized in that: The side wall of the locking rod is connected with a pull rod, the side wall of the locking cylinder is provided with a through hole corresponding to the pull rod, and the other end of the pull rod is connected with a pull ring.

6. A method for preparing a PTFE membrane for improving the anti-pollution performance of the membrane according to claim 5, characterized in that: A handle is connected to the front side of the sealing plate.

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