Primary-effect plate-frame filter element capable of being backwashed

Abstract

The utility model relates to the technical field of waste gas filtration, and discloses a backwashing primary-effect plate frame filter element which comprises a plate frame body, a first filter element is fixed on the front side in the plate frame body, a second filter element is fixed on the rear side in the plate frame body, a discharge groove is formed in the bottom of the plate frame body, and a filter element is arranged in the discharge groove. The discharge groove extends into the plate frame body; according to the utility model, novel composite materials are adopted, so that the requirement on the filtering efficiency of the system is met, the filter element can be cleaned for multiple times and recycled, the service life of the filter element can be effectively prolonged, the generation of waste filter elements is reduced, the pressure on the environment is reduced, the backwashing process is relatively simple, and the cleaned filter element can quickly recover the original filtering efficiency; the filter element adopts a double-layer structure, so that the filtering efficiency is effectively improved, the filter element can ensure that the system always runs in an efficient filtering state, and the overall treatment effect and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas filtering, in particular to a backwashable primary plate-frame filter element. Background Art

[0002] With the increasingly stringent environmental regulations, the standards for exhaust gas emissions are also getting higher and higher. At present, plate and frame filter elements are needed in exhaust gas treatment. Plate and frame filter elements intercept and filter particulate matter and pollutants in the exhaust gas through their internal filter material layer. When the exhaust gas passes through the filter element, the particulate matter and pollutants are retained by the filter material layer, and the clean gas is discharged through the filter element. Plate and frame filter elements are widely used in the field of industrial waste gas treatment, such as chemical, pharmaceutical, printing, coating and other industries. These industries will generate a large amount of exhaust gas during the production process, and effective treatment measures are needed to reduce pollutant emissions.

[0003] At present, traditional glass fiber or polymer fiber primary plate and frame filter elements will lose their filtering effect due to excessive dust accumulation after being used for a period of time, and need to be replaced regularly. These discarded filter elements are often regarded as solid waste, which increases the pressure of storage and treatment. As the dust accumulation on the filter element increases, its air permeability and filtration efficiency will be significantly reduced, which not only affects the treatment effect of the exhaust gas, but may also cause the treated exhaust gas emissions to fail to meet the standards, thereby increasing the risk of environmental pollution. Due to the blockage of the filter element, the resistance of the exhaust gas passing through the filter element increases, and a larger wind pressure or air volume is required to maintain the normal operation of the system. The staff needs to frequently disassemble and replace the filter element. Frequent filter element replacement and maintenance work not only increases labor costs, but also involves the purchase and disposal costs of the filter element. Utility Model Content

[0004] The utility model aims to provide a backwashable primary plate-frame filter element to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backwashable primary plate and frame filter element, comprising a plate and frame body, a first filter element is fixed on the front side of the interior of the plate and frame body, a second filter element is fixed on the rear side of the interior of the plate and frame body, a discharge groove is provided at the bottom of the plate and frame body, and the discharge groove extends to the interior of the plate and frame body, the discharge groove is located between the first filter element and the second filter element, a storage groove is provided below the surface of the plate and frame body, a sealing plate is arranged inside the storage groove, and the sealing plate is slidably connected to the inner wall of the storage groove.

[0006] Preferably, both the first filter element and the second filter element are made of composite materials, and both the first filter element and the second filter element use polyester fibers as substrates to evenly distribute nanofibers on the surface of the polyester fibers through nanotechnology.

[0007] Preferably, the plate frame body is made of stainless steel, and the outer surface of the plate frame body and the surfaces of the first filter element and the second filter element are coated with an anti-corrosion coating. The coating on the surface of the plate frame body is an epoxy resin coating, and the coating on the surfaces of the first filter element and the second filter element is a PTFE coating.

[0008] Preferably, sealing strips are bonded to both the front and rear sides of the top of the sealing plate, the spacing between the sealing strips matches the width of the discharge slot, and the sealing strips are made of rubber.

[0009] Preferably, the front sides of the left and right inner walls of the storage slot are provided with card slots, the left and right sides of the sealing plate are fixed with card blocks, and the card blocks are located inside the card slots and are slidably connected to the inner walls of the card slots, and the front sides of the card blocks are penetrated by fixing bolts, which extend into the card slots and penetrate the card slots, and the fixing bolts are respectively threadedly connected to the card blocks and the inner walls of the card slots.

[0010] Preferably, support frames are fixed to both the front and rear sides of the inner wall of the plate frame body, and the support frames are arranged in an X shape as a whole.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model adopts a new type of composite material, which can be cleaned and regenerated for many times while meeting the system's filtration efficiency requirements, can effectively extend the service life of the filter element, reduce the generation of discarded filter elements, help reduce pressure on the environment, and comply with the concept of sustainable development. The backwashing process is relatively simple and does not require complicated maintenance steps or professional skills. The cleaned filter element can quickly restore its original filtration efficiency, reducing system downtime caused by replacing the filter element. The filter element adopts a double-layer structure, which effectively improves the filtration efficiency. The filter element can ensure that the system always operates in an efficient filtration state, thereby improving the overall processing effect and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0015] Figure 3 It is a cross-sectional view of the plate frame body in the utility model;

[0016] Figure 4 It is a three-dimensional schematic diagram of the first filter element in the utility model;

[0017] Figure 5 It is a cross-sectional view of the plate frame body in the utility model;

[0018] Figure 6 It is a cross-sectional view of the plate frame body in the utility model;

[0019] Figure 7 It is a cross-sectional view of the sealing plate in the utility model.

[0020] In the figure: 1. plate frame body; 2. first filter element; 3. second filter element; 4. discharge slot; 5. storage slot; 6. sealing plate; 7. sealing strip; 8. slot; 9. block; 10. fixing bolt; 11. support frame. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-7 As shown, a backwashable primary plate and frame filter element comprises a plate and frame body 1, a first filter element 2 is fixed to the front side of the interior of the plate and frame body 1, a second filter element 3 is fixed to the rear side of the interior of the plate and frame body 1, a discharge groove 4 is provided at the bottom of the plate and frame body 1, and the discharge groove 4 extends to the interior of the plate and frame body 1, the discharge groove 4 is located between the first filter element 2 and the second filter element 3, a receiving groove 5 is provided below the surface of the plate and frame body 1, a sealing plate 6 is provided inside the receiving groove 5, and the sealing plate 6 is slidably connected to the inner wall of the receiving groove 5.

[0023] The first filter element 2 and the second filter element 3 are both made of composite materials, and the first filter element 2 and the second filter element 3 are both based on polyester fibers and nanofibers are evenly distributed on the surface of the polyester fibers through nanotechnology. The plate frame body 1 is made of stainless steel, and the surface of the outer side of the plate frame body 1 and the surfaces of the first filter element 2 and the second filter element 3 are coated with anti-corrosion coatings. The coating on the surface of the plate frame body 1 is an epoxy resin coating, and the coating on the surface of the first filter element 2 and the second filter element 3 is a PTFE coating. The high specific surface area and porosity of the nanofibers provide excellent filtration efficiency. The wear resistance and chemical corrosion resistance of the polyester fibers ensure the durability of the filter element. The combination of the two can not only meet the requirements of high-efficiency filtration, but also withstand mechanical stress and chemical erosion during the cleaning process. PTFE has extremely low surface energy, which makes it have excellent non-stickiness and corrosion resistance. Applying the PTFE coating to the surface of the filter layer can effectively prevent the adhesion of particles on the filter element, thereby simplifying the cleaning process and improving the regeneration efficiency. The epoxy resin coating coated on the surface of the plate frame body 1 has good chemical corrosion resistance and can resist the erosion of various acids, alkalis, salts and other chemical substances.

[0024] Sealing strips 7 are bonded to the front and rear sides of the top of the sealing plate 6. The spacing between the sealing strips 7 matches the width of the discharge groove 4, and the sealing strips 7 are made of rubber. When the sealing plate 6 is fixed inside the storage groove 5, the sealing plate 6 can seal the discharge groove 4, and the sealing strips 7 on both sides can further improve the sealing effect of the discharge groove 4 to avoid leakage.

[0025] A card slot 8 is provided on the front side of the left and right inner walls of the storage slot 5, and a card block 9 is fixed on the left and right sides of the sealing plate 6, and the card block 9 is located inside the card slot 8 and is slidably connected to the inner wall of the card slot 8, and a fixing bolt 10 is penetrated on the front side of the card block 9, and the fixing bolt 10 extends into the card slot 8 and penetrates the card slot 8, and the fixing bolt 10 is threadedly connected to the card block 9 and the inner wall of the card slot 8 respectively. When the filter element is filtering, the card block 9 can be fixed inside the card slot 8 by the fixing bolt 10, and then the position of the sealing plate 6 is fixed, so that the sealing plate 6 can stably seal the discharge slot 4.

[0026] Support frames 11 are fixed on both the front and rear sides of the inner wall of the plate frame body 1, and the support frames 11 are arranged in an X shape as a whole. When the filter element inside the plate frame body 1 is filtering or backwashing, the support frames 11 on the front and rear sides can effectively support the filter element to avoid damage to the filter element.

[0027] Working principle: When the filter element is in use, the first filter element 2 and the second filter element 3 are set to perform double filtering, thereby improving the filtering effect. During the filtering process, the support frames 11 on both sides will support the first filter element 2 and the second filter element 3. When there are more dust and impurities on the surfaces of the first filter element 2 and the second filter element 3, the staff will reversely flush the filter element and remove the fixing bolts 10 on both sides from the surface of the block 9. The staff will pull out the sealing plate 6 from the inside of the storage groove 5. At this time, the discharge groove 4 is opened. After the reverse flushing water enters the inside of the plate frame body 1, it can flow out from the discharge groove 4 below, so as to effectively clean the surface dust or impurities on the opposite side of the first filter element 2 and the second filter element 3. When the flushing is completed, the staff will insert the sealing plate 6 into the storage groove 5 again, and fix the position of the sealing plate 6 by the fixing bolts 10, so that the discharge groove 4 is blocked. At this time, the filter element can perform the filtering operation again.

[0028] 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 backwashable primary plate-and-frame filter element, comprising a plate-and-frame body (1), characterized in that: A first filter element (2) is fixed to the front side of the plate frame body (1), a second filter element (3) is fixed to the rear side of the plate frame body (1), a discharge groove (4) is provided at the bottom of the plate frame body (1), and the discharge groove (4) extends to the inside of the plate frame body (1), the discharge groove (4) is located between the first filter element (2) and the second filter element (3), a receiving groove (5) is provided below the surface of the plate frame body (1), a sealing plate (6) is provided inside the receiving groove (5), and the sealing plate (6) is slidably connected to the inner wall of the receiving groove (5).

2. A backwashable primary plate-and-frame filter element according to claim 1, characterized in that: The first filter element (2) and the second filter element (3) are both made of composite materials, and the first filter element (2) and the second filter element (3) are both based on polyester fibers, and nanofibers are evenly distributed on the surface of the polyester fibers through nanotechnology.

3. The backwashable primary plate-and-frame filter element according to claim 1, characterized in that: The plate frame body (1) is made of stainless steel, and the outer surface of the plate frame body (1) and the surfaces of the first filter element (2) and the second filter element (3) are all coated with an anti-corrosion coating. The coating on the surface of the plate frame body (1) is an epoxy resin coating, and the coating on the surfaces of the first filter element (2) and the second filter element (3) is a PTFE coating.

4. The backwashable primary plate-and-frame filter element according to claim 1, characterized in that: Sealing strips (7) are bonded to both the front and rear sides of the top of the sealing plate (6), the spacing between the sealing strips (7) matches the width of the discharge groove (4), and the sealing strips (7) are made of rubber.

5. The backwashable primary plate-and-frame filter element according to claim 1, characterized in that: The front sides of the left and right inner walls of the storage slot (5) are both provided with a clamping slot (8); the left and right sides of the sealing plate (6) are both fixed with a clamping block (9); the clamping block (9) is located inside the clamping slot (8) and is slidably connected to the inner wall of the clamping slot (8); a fixing bolt (10) is penetrated through the front side of the clamping block (9); the fixing bolt (10) extends into the inside of the clamping slot (8) and penetrates the clamping slot (8); and the fixing bolt (10) is respectively threadedly connected to the clamping block (9) and the inner wall of the clamping slot (8).

6. The backwashable primary plate-and-frame filter element according to claim 1, characterized in that: Support frames (11) are fixed to both the front and rear sides of the inner wall of the plate frame body (1), and the support frames (11) are arranged in an X shape as a whole.

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