FEP (fluorinated ethylene propylene) composite membrane for chemical protection

Abstract

The utility model discloses an FEP (fluorinated ethylene propylene) composite membrane for chemical protection. The FEP composite membrane comprises an FEP composite membrane main body, a membrane frame for supporting the FEP composite membrane main body, and a base in sliding connection with the membrane frame, the polymer film is adhered to the FEP composite film main body; one side of the film frame is rotationally connected with a sleeve block, the sleeve block is movably connected to the base, the other side of the film frame is movably connected with a connecting plate, and the connecting plate is rotationally connected to the base. According to the FEP composite membrane for chemical protection, by arranging the polymer membrane, the chemical performance and the heavy metal adsorption effect of the FEP composite membrane can be improved, the adsorption performance of the FEP composite membrane main body can be enhanced, the FEP composite membrane main body and the part, originally located at the upper end, of the polymer membrane are immersed in wastewater by turning over the membrane frame by 180 degrees, and the adsorption performance of the FEP composite membrane main body is improved. The upper end and the lower end of the FEP composite membrane main body and the upper end and the lower end of the polymer membrane can adsorb the heavy metal in the pesticide wastewater residue treatment tank, so that the use effects of the FEP composite membrane main body and the polymer membrane are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite films, in particular to an FEP composite film for chemical protection. Background Art

[0002] FEP composite membrane has good corrosion resistance, wear resistance and high chemical stability, and is suitable for treating sewage containing corrosive or organic matter; in addition, FEP composite membrane has high permeability and anti-pollution performance, which can ensure the sewage treatment effect while reducing operating costs; in practical applications, FEP composite membrane is often used in microfiltration (MF) and ultrafiltration (UF) systems to achieve effective treatment of sewage.

[0003] At present, when traditional FEP composite membranes are used to treat heavy metals in pesticide wastewater residues, some heavy metals will sink to the bottom, resulting in the FEP composite membrane at the lower end gradually getting worse in its treatment effect on heavy metals. At the same time, heavy metals have a certain corrosive effect on the FEP composite membrane, thereby shortening the service life of the FEP composite membrane. Therefore, the utility model provides an FEP composite membrane for chemical protection. Utility Model Content

[0004] The purpose of the utility model is to provide an FEP composite membrane for chemical protection, so as to solve the problem mentioned in the above background technology that when the conventional FEP composite membrane is used to treat heavy metals in pesticide wastewater residues, some heavy metals will sink to the bottom, resulting in the FEP composite membrane at the lower end having a gradually worsening treatment effect on heavy metals, and at the same time, the heavy metals have a certain corrosive effect on the FEP composite membrane, thereby shortening the service life of the FEP composite membrane.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A FEP composite film for chemical protection, comprising a FEP composite film body, a film frame for supporting the FEP composite film body, and a base slidably connected to the film frame;

[0006] It also includes a polymer film pasted on the FEP composite film body; one side of the film frame is rotatably connected to a sleeve block, the sleeve block is movably connected to a base, and the other side of the film frame is movably connected to a connecting plate, the connecting plate is rotatably connected to the base.

[0007] Preferably, the base is connected to a C-shaped frame, the C-shaped frame is connected to an arc-shaped plate, and the inner wall of the sleeve block fits the outer side of the arc-shaped plate.

[0008] Preferably, a rotating rod is rotatably connected to the connecting plate, and three groups of connecting rods are sleeved on the rotating rod, and the other end of each group of connecting rods is rotatably connected to the membrane frame.

[0009] Preferably, an arc-shaped groove is provided on the base, a screw rod is movably connected inside the arc-shaped groove, and the other end of the screw rod is threadedly sleeved on the connecting plate.

[0010] Preferably, a movable block is slidably connected inside the arc groove, and the movable block is threadedly connected to the screw rod.

[0011] Preferably, a slide groove is provided inside the base, a slider is slidably connected inside the slide groove, and the slider is connected to the movable block.

[0012] Preferably, two groups of springs are connected to the slide groove, and the other end of each group of springs is connected to the slide block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting a polymer membrane, its chemical properties and the effect of adsorbing heavy metals can be improved. At the same time, the polymer membrane has good chemical stability and high specific surface area, which helps to enhance the adsorption performance of the FEP composite membrane body, maintain the mechanical properties and stability of the FEP composite membrane body, and thus improve the service life of the FEP composite membrane body. By turning over the membrane frame, the FEP composite membrane body and the polymer membrane that were originally at the upper end are immersed in the wastewater, so as to adsorb the heavy metals that sink to the bottom of the wastewater, so that the upper and lower ends of the FEP composite membrane body and the polymer membrane can adsorb the heavy metals in the pesticide wastewater residue treatment pool, thereby improving the use effect of the FEP composite membrane body and the polymer membrane;

[0015] 2. Under the action of the C-shaped frame, the arc plate and the sleeve block, one side of the membrane frame can be rotated while driving the entire membrane frame to slide on the arc plate. Under the action of the connecting plate, the rotating rod and the connecting rod, the other side of the membrane frame can be rotated while also causing the membrane frame to shift laterally, which can effectively buffer the impact of wastewater fluctuations on the FEP composite membrane body and the polymer membrane, and further extend the service life of the FEP composite membrane body and the polymer membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the film frame, the FEP composite film body and the polymer film of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the C-shaped frame, arc-shaped plate and sleeve block of the utility model;

[0020] Figure 5It is a three-dimensional structural schematic diagram of the connecting plate, rotating rod, connecting rod, arc groove, movable block and screw rod of the utility model;

[0021] Figure 6 It is a partial schematic diagram of the three-dimensional structural section of the base of the utility model.

[0022] In the figure: 1, base; 101, film frame; 2, FEP composite film body; 3, polymer film; 4, C-shaped frame; 401, arc plate; 402, sleeve block; 403, connecting plate; 404, rotating rod; 405, connecting rod; 5, arc groove; 501, movable block; 502, screw; 503, slide groove; 504, slider; 505, spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the utility model provides a technical solution: a FEP composite membrane for chemical protection, comprising a FEP composite membrane body 2, a membrane frame 101 for supporting the FEP composite membrane body 2, and a base 1 slidably connected to the membrane frame 101, the base 1 is installed in a pesticide wastewater residue treatment tank;

[0025] It also includes a polymer film 3 pasted on the FEP composite film body 2; the polymer film 3 can be polyether ester, polyacrylate, etc., which can improve its chemical properties and the effect of adsorbing heavy metals. At the same time, this type of polymer film 3 has good chemical stability and high specific surface area, which helps to enhance the adsorption performance of the FEP composite film body 2. At the same time, the polymer film 3 has good compatibility with the FEP composite film body 2, and can maintain the mechanical properties and stability of the FEP composite film body 2. The polymer film 3 is arranged in a circular shape, which can better protect the FEP composite film body 2. To protect the membrane, one side of the membrane frame 101 is rotatably connected to a sleeve block 402, which is movably connected to the base 1, and the other side of the membrane frame 101 is movably connected to a connecting plate 403, which is rotatably connected to the base 1, so that the membrane frame 101 as a whole can drive the FEP composite membrane body 2 and the polymer membrane 3 to flip 180 degrees on the base 1, so that the upper and lower ends of the FEP composite membrane body 2 and the polymer membrane 3 can adsorb heavy metals in the pesticide wastewater residue treatment pool, thereby improving the use effect of the FEP composite membrane body 2 and the polymer membrane 3.

[0026] A C-shaped frame 4 is connected to the base 1, and an arc plate 401 is connected to the C-shaped frame 4. The inner wall of the sleeve block 402 fits the outer side of the arc plate 401. Under the action of the C-shaped frame 4, the arc plate 401 and the sleeve block 402, one side of the film frame 101 can rotate while driving the film frame 101 as a whole to slide on the arc plate 401.

[0027] A rotating rod 404 is rotatably connected to the connecting plate 403, and three groups of connecting rods 405 are mounted on the rotating rod 404. The other end of each group of connecting rods 405 is rotatably connected to the film frame 101. Under the action of the connecting plate 403, the rotating rod 404 and the connecting rod 405, the other side of the film frame 101 can be rotated while the film frame 101 can also be offset laterally.

[0028] An arc groove 5 is provided on the base 1, and a screw rod 502 is movably connected inside the arc groove 5. The other end of the screw rod 502 is threadedly sleeved on the connecting plate 403. With the cooperation between the arc groove 5 and the screw rod 502, the fixed connecting plate 403 can only rotate to a certain angle.

[0029] A movable block 501 is slidably connected inside the arc groove 5, and the movable block 501 is threadedly connected to the screw 502. Under the action of the movable block 501, the wear of the screw 502 inside the arc groove 5 can be reduced, thereby improving the stability of the screw 502 fixing the connecting plate 403.

[0030] A slide groove 503 is arranged inside the base 1, and a slider 504 is slidably connected inside the slide groove 503. The slider 504 is connected to the movable block 501. Under the action of the slide groove 503 and the slider 504, the movable block 501 can slide stably inside the arc groove 5 and will not fall out of the arc groove 5.

[0031] Two groups of springs 505 are connected to the slide groove 503 , and the other end of each group of springs 505 is connected to the slider 504 . Under the action of the springs 505 , the slider 504 can quickly return to its original position after displacement.

[0032] Working principle: After the FEP composite membrane body 2 and the polymer membrane 3 have been used for a period of time, the adsorption effect of the lower part on heavy metals will gradually decrease. The worker can then rotate the membrane frame 101 180 degrees, so that the FEP composite membrane body 2 and the polymer membrane 3 that were originally at the upper end are at the lower end, and one side of the membrane frame 101 rotates on the sleeve block 402, and the other side of the membrane frame 101 drives the connecting plate 403 to rotate on the base 1, and then rotate the screw 502 inside the movable block 501, so that the screw 502 is threadedly connected with the movable block 501 until the other end of the screw 502 is threadedly connected with the inner part of the connecting plate 403, thereby limiting the membrane frame 101, so that the FEP composite membrane body 2 and the polymer membrane 3 that were originally at the upper end continue to adsorb the heavy metals in the pesticide wastewater residue treatment pool, thereby improving the adsorption effect of the FEP composite membrane body 2 and the polymer membrane 3 on heavy metals;

[0033] When the wastewater in the treatment pool fluctuates and impacts the polymer membrane 3, the polymer membrane 3 will be driven to tilt in the horizontal and vertical directions to a certain extent, so that one side of the membrane frame 101 rotates on the sleeve block 402, and the other side of the membrane frame 101 drives the connecting plate 403 to rotate on the base 1, so that the membrane frame 101 rotates in the vertical direction, thereby driving the movable block 501 to slide inside the arc groove 5, and the slider 504 to slide inside the slide groove 503, thereby squeezing the spring 505, causing the spring 505 to produce elastic deformation. Under the limiting effect of the arc groove 5, the membrane frame 101 will only rotate to a certain angle, thereby buffering the impact of the water flow. Under the elastic effect of the spring 505, the rotated membrane frame 101 can be quickly reset;

[0034] When the water flow impacts the polymer membrane 3, the membrane frame 101 will also tilt laterally. One end of the connecting rod 405 rotates on the rotating rod 404, and the other end of the connecting rod 405 rotates on the membrane frame 101, causing the connecting rod 405 to tilt. The connecting rod 405 will drive the membrane frame 101 connected to the sleeve block 402 to slide on the arc plate 401, thereby causing the membrane frame 101 to tilt laterally, thereby reducing the impact force of wastewater fluctuations.

[0035] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A FEP composite film for chemical protection, characterized in that: It comprises an FEP composite film body (2), a film frame (101) for supporting the FEP composite film body (2), and a base (1) slidably connected to the film frame (101); It also includes a polymer film (3) adhered to the FEP composite film body (2); one side of the film frame (101) is rotatably connected to a sleeve block (402), and the sleeve block (402) is movably connected to the base (1); the other side of the film frame (101) is movably connected to a connecting plate (403), and the connecting plate (403) is rotatably connected to the base (1).

2. The FEP composite film for chemical protection according to claim 1, characterized in that: The base (1) is connected to a C-shaped frame (4), the C-shaped frame (4) is connected to an arc-shaped plate (401), and the inner wall of the sleeve block (402) fits the outer side of the arc-shaped plate (401).

3. The FEP composite film for chemical protection according to claim 1, characterized in that: The connecting plate (403) is rotatably connected to a rotating rod (404), and the rotating rod (404) is sleeved with three groups of connecting rods (405), and the other end of each group of connecting rods (405) is rotatably connected to the film frame (101).

4. The FEP composite film for chemical protection according to claim 1, characterized in that: The base (1) is provided with an arc-shaped groove (5), a screw rod (502) is movably connected inside the arc-shaped groove (5), and the other end of the screw rod (502) is threadedly sleeved on the connecting plate (403).

5. The FEP composite film for chemical protection according to claim 4, characterized in that: A movable block (501) is slidably connected inside the arc groove (5), and the movable block (501) is threadedly connected to the screw rod (502).

6. The FEP composite film for chemical protection according to claim 5, characterized in that: A slide groove (503) is arranged inside the base (1), a slider (504) is slidably connected inside the slide groove (503), and the slider (504) is connected to the movable block (501).

7. The FEP composite film for chemical protection according to claim 6, characterized in that: Two groups of springs (505) are connected to the slide groove (503), and the other end of each group of springs (505) is connected to the slider (504).

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