Corrosion-resistant filter cloth

Abstract

The utility model relates to filter material technical field, and disclose a kind of corrosion-resistant filter cloth, including filter plate, the filter plate bottom is movably connected with base cloth layer.The utility model base cloth layer adopts polytetrafluoroethylene fiber and polyphenylene sulfide fiber combination, both have excellent chemical stability, polytetrafluoroethylene fiber hardly reacts with any chemical substance, can keep stable in strong acid, strong base, strong oxidizing agent and organic solvent etc. extreme corrosive environment, effectively resist the corrosion of corrosive medium outside to filter cloth, polyphenylene sulfide fiber also has excellent acid and alkali resistance, chemical reagent resistance, can maintain good physical mechanical properties under high temperature, high corrosion condition, the synergistic effect of both, fundamentally improve the corrosion resistance of base cloth layer, greatly extend the service life of filter cloth in harsh environment, reduce replacement frequency, reduce enterprise operating cost.

Description

Technical Field

[0001] This utility model relates to the field of filter material technology, and in particular to a corrosion-resistant filter cloth. Background Technology

[0002] In many industrial fields such as chemical engineering, environmental protection, and food processing, filter cloth is a key material for achieving solid-liquid separation and gas-solid separation. Its performance directly affects production efficiency and product quality. As industrial production develops towards refinement and efficiency, higher requirements are placed on the corrosion resistance and structural stability of filter cloth.

[0003] Traditional filter cloths are mostly made of ordinary fiber materials. When exposed to corrosive media, they are prone to fiber breakage and structural damage, which shortens the service life of the filter cloth, reduces the filtration effect, and increases the cost of use and maintenance. In addition, the installation fit between the filter cloth and the filter plate is not tight enough, which can easily cause displacement during the filtration process and affect the filtration effect.

[0004] Therefore, those skilled in the art have provided a corrosion-resistant filter cloth to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the issues of traditional filter cloths being susceptible to corrosion and not fitting tightly enough to the filter plate, this invention provides a corrosion-resistant filter cloth, employing the following technical solution:

[0006] A corrosion-resistant filter cloth includes a filter plate, a base fabric layer movably connected to the bottom of the filter plate, the base fabric layer including a reinforcing edging, the top of the reinforcing edging being movably connected to the filter plate, polytetrafluoroethylene fibers being fixedly connected to the inner side of the reinforcing edging, polyphenylene sulfide fibers being fixedly connected to one side of the polytetrafluoroethylene fibers, and the other side of the polyphenylene sulfide fibers being fixedly connected to the reinforcing edging.

[0007] Optionally, the bottom of the filter plate is provided with a groove, and a protrusion is slidably connected to the inner cavity of the groove. The bottom of the protrusion is fixedly connected to the reinforcing edging.

[0008] Optionally, an adsorption layer is adhered to the bottom of the reinforcing edging, and the adsorption layer is made of activated carbon and high-temperature resistant adhesive.

[0009] Optionally, an antibacterial layer is fixedly connected to the bottom of the adsorption layer, and the antibacterial layer is made of silver-loaded titanium dioxide nanofibers.

[0010] Optionally, a buffer layer is fixedly connected to the bottom of the antibacterial layer, and the buffer layer is made of polyurethane foam material.

[0011] Optionally, the reinforcing edging and protrusions are both woven from a mixture of aramid fiber and basalt fiber.

[0012] Optionally, the surface of the adsorption layer is provided with filter pores, and the number of filter pores is multiple and distributed in an array.

[0013] In summary, this utility model has the following beneficial effects:

[0014] 1. The base fabric layer of this utility model is made of a combination of polytetrafluoroethylene (PTFE) fiber and polyphenylene sulfide (PPS) fiber. Both have excellent chemical stability. PTFE fiber hardly reacts with any chemical substances and can remain stable in extreme corrosive environments such as strong acids, strong alkalis, strong oxidants, and organic solvents, effectively resisting the corrosion of the filter cloth by external corrosive media. PPS fiber also has excellent acid and alkali resistance and chemical reagent resistance, and can maintain good physical and mechanical properties under high temperature and high corrosion conditions. The synergistic effect of the two fundamentally improves the corrosion resistance of the base fabric layer, greatly extends the service life of the filter cloth in harsh environments, reduces the replacement frequency, and reduces the operating costs of enterprises.

[0015] 2. Because both the protrusions and grooves of this utility model are dovetail-shaped and fit tightly together, they can form an extremely tight contact during connection, greatly reducing the possibility of leakage of the filter medium from the connection point. In industries such as chemical and food processing, where sealing requirements are extremely high, this structure can effectively prevent impurities from mixing into the filtered medium, ensuring product quality. At the same time, for corrosive filter media, the good sealing performance can prevent leakage, avoid corrosion of production equipment, ensure the safety of the production environment, and reduce safety risks and maintenance costs caused by media leakage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an enlarged view of section A of this utility model.

[0018] Figure 3 This is a schematic diagram of the protrusion structure of this utility model.

[0019] Figure 4 This is an enlarged view of section B of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the adsorption layer of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Filter plate; 2. Base fabric layer; 201. Reinforcing edging; 202. Polytetrafluoroethylene fiber; 203. Polyphenylene sulfide fiber; 3. Groove; 4. Protrusion; 5. Adsorption layer; 6. Antibacterial layer; 7. Buffer layer; 8. Filter pores. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] Example 1:

[0025] Please refer to Figure 1-5 A corrosion-resistant filter cloth includes a filter plate 1, a base fabric layer 2 movably connected to the bottom of the filter plate 1, the base fabric layer 2 including a reinforcing edging 201, the top of the reinforcing edging 201 being movably connected to the filter plate 1, a polytetrafluoroethylene fiber 202 being fixedly connected to the inner side of the reinforcing edging 201, a polyphenylene sulfide fiber 203 being fixedly connected to one side of the polytetrafluoroethylene fiber 202, and the other side of the polyphenylene sulfide fiber 203 being fixedly connected to the reinforcing edging 201.

[0026] In this embodiment: the reinforced edge 201 effectively disperses stress when the filter cloth is subjected to media pressure or external force during the filtration process, preventing wear and tear at the edges of the base fabric layer 2. The low coefficient of friction and high lubricity of polytetrafluoroethylene fiber 202 can reduce friction between the filter cloth and the filter equipment components, reducing wear. The polyphenylene sulfide fiber 203 has high strength and rigidity, which can enhance the overall mechanical properties of the base fabric layer 2, making the filter cloth less prone to deformation under greater pressure. The combination of the two enables it to adapt to more complex and demanding filtration conditions.

[0027] Example 2:

[0028] Reference Figure 1-5 The bottom of the filter plate 1 has a groove 3, and a protrusion 4 is slidably connected to the inner cavity of the groove 3. The bottom of the protrusion 4 is fixedly connected to the reinforcing edging 201. An adsorption layer 5 is adhered to the bottom of the reinforcing edging 201. The adsorption layer 5 is made of activated carbon and high-temperature resistant adhesive. An antibacterial layer 6 is fixedly connected to the bottom of the adsorption layer 5. The antibacterial layer 6 is made of silver-loaded titanium dioxide nanofibers. A buffer layer 7 is fixedly connected to the bottom of the antibacterial layer 6. The buffer layer 7 is made of polyurethane sponge material. Both the reinforcing edging 201 and the protrusion 4 are woven from a mixture of aramid fiber and basalt fiber. The surface of the adsorption layer 5 has filter holes 8. There are multiple filter holes 8 distributed in an array.

[0029] In this embodiment: the number of protrusions 4 and grooves 3 are multiple and evenly distributed around the reinforcing edging 201, which makes the filter cloth more evenly stressed when connected to the filter plate 1. Activated carbon has a rich pore structure and a huge specific surface area, which can efficiently adsorb odors, residual impurities and some small molecule harmful substances generated during the filtration process. Even in the edge area of ​​the filter cloth, it can further purify the filter medium. Silver-loaded titanium dioxide nanofibers can exert a strong inhibitory and killing effect on bacteria, mold and other microorganisms, preventing microorganisms from growing and multiplying on the surface of the filter cloth. Polyurethane sponge has good elasticity. With its excellent properties of moisture and cushioning, the buffer layer 7 effectively absorbs and disperses the impact force when the filter medium rapidly impacts the filter cloth during the filtration process. The aramid fiber has extremely high strength and modulus, which can effectively resist the tensile and impact forces generated during the filtration process, preventing the reinforcing edging 201 and the protrusions 4 from deforming or breaking. The basalt fiber has good chemical stability and wear resistance, and can maintain its structural integrity for a long time in corrosive media environments. The array-distributed filter pores 8 can guide the filter medium to pass evenly through the adsorption layer 5, avoiding excessive or insufficient local flow, and ensuring that the filter medium and activated carbon are in full contact.

[0030] The implementation principle of this utility model is as follows: When in use, the groove 3 at the bottom of the filter plate 1 is aligned with the protrusion 4 on the reinforcing edge 201 and inserted. Then, the filter plate 1 is installed in the designated position. The filter medium first passes through the base cloth layer 2. The polytetrafluoroethylene fiber 202 and polyphenylene sulfide fiber 203 can effectively resist the corrosion of the medium and prevent the base cloth layer 2 from being corroded and damaged. When passing through the adsorption layer 5, odors, pigments, small molecule harmful substances and other impurities in the filter medium will be adsorbed in the pores of the activated carbon, achieving preliminary purification of the filter medium. When reaching the antibacterial layer 6, the silver-loaded titanium dioxide nanofibers can release silver ions, which have an inhibitory and killing effect on bacteria, mold and other microorganisms. Finally, the filter medium passes through the buffer layer 7. Under the impact of the filter medium, the polyurethane sponge will undergo elastic deformation, absorb and disperse the impact force, and reduce the deformation and wear of the filter cloth caused by the force.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A corrosion-resistant filter cloth, comprising a filter plate (1), characterized in that: The bottom of the filter plate (1) is movably connected to a base fabric layer (2); The base fabric layer (2) includes a reinforcing edging (201), the top of which is movably connected to the filter plate (1), and polytetrafluoroethylene fiber (202) is fixedly connected to the inner side of the reinforcing edging (201). Polyphenylene sulfide fiber (203) is fixedly connected to one side of the polytetrafluoroethylene fiber (202), and the other side of the polyphenylene sulfide fiber (203) is fixedly connected to the reinforcing edging (201).

2. The corrosion-resistant filter cloth according to claim 1, characterized in that: The filter plate (1) has a groove (3) at the bottom, and a protrusion (4) is slidably connected to the inner cavity of the groove (3). The bottom of the protrusion (4) is fixedly connected to the reinforcing edging (201).

3. The corrosion-resistant filter cloth according to claim 1, characterized in that: The bottom of the reinforcing edging (201) is bonded with an adsorption layer (5), which is made of activated carbon and high-temperature resistant adhesive.

4. The corrosion-resistant filter cloth according to claim 3, characterized in that: An antibacterial layer (6) is fixedly connected to the bottom of the adsorption layer (5), and the antibacterial layer (6) is made of silver-loaded titanium dioxide nanofibers.

5. The corrosion-resistant filter cloth according to claim 4, characterized in that: The bottom of the antibacterial layer (6) is fixedly connected to a buffer layer (7), which is made of polyurethane sponge material.

6. The corrosion-resistant filter cloth according to claim 2, characterized in that: The reinforcing edging (201) and the protrusions (4) are both woven from a mixture of aramid fiber and basalt fiber.

7. The corrosion-resistant filter cloth according to claim 3, characterized in that: The surface of the adsorption layer (5) is provided with filter holes (8), and the number of filter holes (8) is multiple and they are distributed in an array.

Images