Polyester hydrophilic filter cartridge with water-jet needling and oil-repellent treatment and preparation process thereof

Abstract

This invention discloses a polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process, belonging to the field of filter cartridge technology. It includes a mounting base with an annular through-hole at the center and a concave bottom design on the side. A fixing mechanism is provided on the outer side of the mounting base, and an inner sleeve is vertically fixed at the bottom. This invention, by providing a rotating connection mechanism between the top of the filter media and the bottom of the mounting base, combined with a reset mechanism, enables the filter media to rotate during pulse cleaning using the impact force of the pulse. This changes the contact position between the filter media and the airflow and dust, preventing the fixed position on the filter cartridge surface from bearing differential loads for extended periods. This effectively reduces the risk of premature failure due to localized overload, significantly extending the service life of the filter media. Simultaneously, the filter media vibrates up and down during cleaning, and the reset mechanism enhances the vibration effect, more thoroughly shaking off dust adhering to the filter media surface, improving cleaning efficiency and reducing dust residue.

Description

Technical Field

[0001] This invention relates to an oleophobic and hydrophilic filter cartridge, and more particularly to a polyester spunlace oleophobic and hydrophilic filter cartridge. This invention also relates to a manufacturing process for a polyester spunlace oleophobic and hydrophilic filter cartridge, and more particularly to a manufacturing process, belonging to the field of filter cartridge technology. Background Technology

[0002] In baghouse dust collectors, polyester filter cartridges are designed with "hydrophilic and oleophobic" properties, mainly to adapt to the flue gas composition under specific working conditions (such as moisture, oil mist, or sticky dust), thereby ensuring filtration efficiency, extending filter cartridge life, and reducing operating resistance.

[0003] Currently, filter cartridges are installed in a fixed position during use, and the air inlet position is also fixed. In working conditions with severe airflow deviation and large fluctuations in dust concentration, the fixed position on the surface of the filter cartridge is subjected to differential loads for a long time, which may lead to premature failure due to local overload and affect service life. In addition, the bolt fixing method is inconvenient for disassembly and use.

[0004] To address these issues, a polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process were designed. Summary of the Invention

[0005] The main objective of this invention is to provide a polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process. A rotating connection mechanism consisting of an inner sleeve, an outer sleeve, a corrugated guide groove, and a first slider is provided between the top of the filter media and the bottom of the mounting base. This, combined with a reset mechanism consisting of a collar and a second spring, allows the filter media to rotate during pulse cleaning by utilizing the impact force of the pulses. This changes the contact position between the filter media and the airflow and dust, preventing the fixed surface of the filter cartridge from bearing differential loads for extended periods. This effectively reduces the risk of premature failure due to localized overload and significantly extends the service life of the filter media. Simultaneously, the filter media vibrates up and down during cleaning, and the reset mechanism enhances the vibration effect, more thoroughly shaking off dust adhering to the filter media surface, improving cleaning efficiency and reducing dust residue. Furthermore, the mounting base is equipped with a protective tube, an annular guide rail, a second slider, a vertical rod, and an annular scraper. The combing and cleaning mechanism, composed of plates and V-grooves, effectively scrapes off dust from the filter media surface during rotation and shaking, ensuring a clean filtration surface. Simultaneously, the V-groove structure combs and corrects the filter media fibers, maintaining structural integrity and filtration accuracy, and guaranteeing long-term stable filtration efficiency. The fixing mechanism, consisting of a slide groove, extrusion block, pressing surface, turntable, flat thread, adjusting rod, pressure cap, and rotary locking assembly, uses the extrusion block to press and fix the filter cartridge against the lower inner wall of the mounting port, achieving rapid assembly and disassembly compared to traditional bolt fixing. This significantly simplifies the assembly and disassembly process, facilitating daily maintenance and replacement. Furthermore, the rotary locking assembly, composed of the mounting groove, trapezoidal insert, first spring, toothed groove, and pull rope, locks the filter cartridge in its installation position, effectively preventing it from falling off under vibration and impact conditions, ensuring the stability and safety of the equipment operation.

[0006] The objective of this invention can be achieved by adopting the following technical solution: A polyester spunlace oleophobic and hydrophilic filter cartridge includes a mounting base, an annular opening with vertical conduction at the middle position of the mounting base, a concave bottom design on the side of the mounting base, and a fixing mechanism on the outer side of the mounting base. An inner sleeve is vertically fixed at the bottom of the mounting base. An outer sleeve is fitted on the outside of the inner sleeve. A corrugated guide groove with the ends connected is opened on the side of the inner sleeve. A first slider is evenly slidably arranged inside the corrugated guide groove. The first slider is fixed to the inner wall of the outer sleeve. A reset mechanism for controlling the vertical reset of the outer sleeve is provided between the side of the outer sleeve and the bottom of the mounting base; The bottom end of the outer tube is provided with filter media, and the outer side of the bottom end of the mounting base is provided with a combing and cleaning mechanism that is in contact with the surface of the filter media and cleans and combs the surface of the filter media. The bottom of the filter media is fixedly mounted with a base horizontally.

[0007] Preferably, the fixing mechanism includes a slide, a pressing block, a pressing surface, and a translation component. The slide is evenly arranged in a ring array on the top of the mounting base, and the bottom end of the slide is connected to the outside of the mounting base. The pressing block is horizontally slidably arranged inside the slide. The bottom of the pressing block is inclinedly arranged with a pressing surface, and the vertical direction of the pressing surface is towards the top of the mounting base. The top of the mounting base is provided with multiple sets of translation components that synchronously extend and retract the pressing blocks.

[0008] Preferably, the translation assembly includes a turntable, a flat thread, and a rotary locking assembly. The turntable is horizontally rotatably mounted on the top of the mounting base. The top of the mounting base has an annular groove that mates with the turntable. The bottom of the turntable has a flat thread that meshes with the top of the extrusion block. The side of the mounting base has a rotary locking assembly that limits the movement of the turntable.

[0009] Preferably, the top of the turntable is provided with an annular protrusion, and the surface of the annular protrusion is evenly provided with adjusting rods.

[0010] Preferably, a pressure cap is threaded onto the outer side of the mounting base, and the inner top of the pressure cap fits against the top of the turntable.

[0011] Preferably, the rotary locking assembly includes a mounting groove, a trapezoidal insert, a first spring, a toothed groove, and a pull rope. The mounting groove is evenly opened on the outside of the annular groove. The trapezoidal insert is slidably arranged inside the mounting groove. A first spring is provided between the trapezoidal insert and the inner end of the mounting groove. The outer side of the turntable is evenly opened with toothed grooves. The trapezoidal insert is inserted into the inside of the toothed groove. The outer end of the trapezoidal insert is fixed with a pull rope. Multiple pull ropes slide out from the inside of the mounting base and are fixedly connected to the inside of the pressure cover.

[0012] Preferably, the reset mechanism includes a collar and a second spring. The collar is horizontally rotatably mounted on the outside of the outer sleeve. A bearing is provided between the collar and the outer sleeve. The second spring is fixedly mounted between the top of the collar and the bottom of the mounting base.

[0013] Preferably, a sealing ring is provided at the bottom of the outer side of the inner sleeve, and the outer side of the sealing ring is in contact with the inner wall of the outer sleeve.

[0014] Preferred: The combing and cleaning mechanism includes a protective tube, an annular guide rail, a second slider, vertical rods, an annular scraper, and a V-groove. The protective tube is fitted over the outer sleeve and fixedly connected to the bottom of the mounting base. An annular guide rail is fixed to the bottom of the protective tube. A second slider is evenly and slidably arranged inside the annular guide rail. A vertical rod is vertically fixed to the bottom of each second slider. An annular scraper is evenly and horizontally arranged between the vertical rods. The annular scraper at the bottom of the vertical rod is in contact with the top of the base. A V-groove is opened on the inner side of each annular scraper. The surface of the filter material is in contact with the inner side of the V-groove.

[0015] This invention also provides a process for preparing a polyester spunlace oleophobic and hydrophilic filter cartridge, comprising the following steps: Step 1: Preparation of filter media. Polyester short fibers or filaments are selected. The fiber fineness is selected according to the filtration accuracy requirements. After opening, the fibers are combed into a continuous fiber web by a carding machine. The fibers are arranged in parallel or randomly. Multiple single webs are stacked by a cross-laying machine to form a fiber web of a certain thickness. High-pressure water is used to flow through a perforated nozzle to impact the fiber web vertically or at an angle. Under the impact force of the water flow, the fibers entangle and interweave with each other to form a non-woven fabric with a stable structure. Step 2: Modification of filter media. The filter media is placed in a plasma reaction chamber. At low temperature, high-energy plasma bombards the polyester surface, breaking the molecular chains and introducing polar groups such as hydroxyl and carboxyl groups to enhance hydrophilicity. At the same time, the surface is micro-etched to form nanoscale roughness to assist in oleophobicity. The processing time is 30~300 seconds and the power is 50~300W. The parameters need to be controlled to avoid excessive etching that damages the filter media structure. Step 3: Forming and processing of filter media. Cut the filter media according to the size of the filter cartridge, and then fold the filter media to form pleats. The number of pleats is designed according to the thickness of the filter media and the filtration requirements. When folding, it is necessary to ensure that the pleat spacing is uniform to avoid clogging. Then fix the filter media to the bottom of the outer tube and use a metal mesh tube for support. The metal mesh tube is nested inside the filter media, and its two ends are fixed to the bottom of the outer tube and the base respectively to enhance the structural strength of the filter media. Step 4: Install the reset mechanism between the outer side of the outer sleeve and the bottom of the mounting base. Then install the combing and cleaning mechanism on the outer side of the filter media. Depending on the application scenario, select heat-resistant and media-resistant plastic or metal to seal the bottom of the filter media. After the base is fixed, assemble the fixing mechanism onto the mounting base. The filter cartridge preparation is complete.

[0016] The beneficial effects of this invention are as follows: This invention provides a polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process. By providing a rotating connection mechanism consisting of an inner sleeve, an outer sleeve, a corrugated guide groove, and a first slider between the top of the filter material and the bottom of the mounting base, and a reset mechanism consisting of a collar and a second spring, the filter material can be driven to rotate by the impact force of the pulse during pulse cleaning. This changes the contact position between the filter material and the airflow and dust, avoiding long-term differential load on the fixed position of the filter cartridge surface, effectively reducing the risk of premature failure caused by local overload, and significantly extending the service life of the filter material. At the same time, the filter material can shake up and down during cleaning. The reset mechanism enhances the vibration effect, which can more thoroughly shake off the dust attached to the surface of the filter material, improve cleaning efficiency, and reduce dust residue. By setting a combing and cleaning mechanism consisting of a protective tube, annular guide rail, second slider, vertical rod, annular scraper, and V-groove at the bottom of the mounting base, dust on the surface of the filter media can be effectively scraped off during the rotation and shaking of the filter media, ensuring the cleanliness of the filter surface. At the same time, the V-groove structure can comb and correct the filter media fibers, maintain the structural integrity and filtration accuracy of the filter media, and ensure long-term stable filtration efficiency. The fixing mechanism, consisting of a chute, extrusion block, pressing surface, turntable, flat thread, adjusting rod, pressure cap, and rotary locking assembly, uses the extrusion block to press and fix the filter cartridge against the lower inner wall of the installation port, achieving rapid assembly and disassembly. Compared with traditional bolt fixing, this greatly simplifies the assembly and disassembly process and facilitates daily maintenance and replacement. In addition, the rotary locking assembly, consisting of an installation groove, trapezoidal insert, first spring, toothed groove, and pull rope, can lock the filter cartridge installation position, effectively preventing the filter cartridge from falling off under vibration and impact conditions, and ensuring the stability and safety of equipment operation. Attached Figure Description

[0017] Figure 1 This is a front view of a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process according to the present invention; Figure 2 This is a front sectional view of a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process according to the present invention. Figure 3 This is a partial structural diagram of the top of a filter cartridge according to a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its preparation process of the present invention. Figure 4 This is a preferred embodiment of a polyester spunlace oleophobic and hydrophilic filter cartridge and its preparation process according to the present invention. Figure 3 Enlarged view of point A in the middle; Figure 5 This is a top sectional view of the mounting base of a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process according to the present invention; Figure 6 This is a structural diagram of the outer side of the inner sleeve in a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its preparation process according to the present invention. Figure 7 This is a structural diagram of the outer tube of a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its preparation process according to the present invention; Figure 8 This is a cross-sectional view of an annular guide rail in a preferred embodiment of a polyester spunlace oleophobic and hydrophilic filter cartridge and its manufacturing process according to the present invention. Figure 9 This is a top view of the annular scraper in a preferred embodiment of the polyester spunlace oleophobic and hydrophilic filter cartridge and its preparation process according to the present invention.

[0018] In the diagram: 1. Mounting bracket; 2. Fixing mechanism; 201. Slide groove; 202. Pressing block; 203. Pressing surface; 204. Turntable; 205. Flat thread; 206. Adjusting rod; 207. Pressure cap; 208. Rotary locking assembly; 2081. Mounting slot; 2082. Trapezoidal insert; 2083. First spring; 2084. Toothed groove; 2085. Pull rope; 3. Inner sleeve; 4. Outer sleeve; 5. Corrugated guide groove; 6. First slider; 7. Reset mechanism; 701. Collar; 702. Second spring; 8. Filter media; 9. Cleaning mechanism; 901. Protective tube; 902. Circular guide rail; 903. Second slider; 904. Vertical rod; 905. Circular scraper; 906. V-groove; 10. Base. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] like Figures 1-9 As shown, this embodiment provides a polyester spunlace oleophobic and hydrophilic filter cartridge, including a mounting base 1. The mounting base 1 has an annular opening that is open at the middle position and the bottom of the side of the mounting base 1 is concave. The mounting base 1 provides support for the overall structure. The annular opening in the middle serves as the outflow channel for the filtered fluid. A fixing mechanism 2 is provided on the outside of the mounting base 1. An inner sleeve 3 is vertically fixed at the bottom of the mounting base 1. An outer sleeve 4 is fitted on the outside of the inner sleeve 3. A corrugated guide groove 5 with the ends connected is opened on the side of the inner sleeve 3. A first slider 6 is evenly slidably arranged inside the corrugated guide groove 5. The first slider 6 is fixed to the inner wall of the outer sleeve 4. A reset mechanism 7 for controlling the vertical reset of the outer sleeve 4 is provided between the side of the outer sleeve 4 and the bottom of the mounting base 1; The bottom end of the outer tube 4 is provided with filter material 8, and the outer side of the bottom end of the mounting base 1 is provided with a combing and cleaning mechanism 9 that is attached to the surface of the filter material 8 and cleans and combs the surface of the filter material 8. A base 10 is horizontally fixed to the bottom of the filter media 8, which fixes the bottom of the filter media 8 and ensures the overall structural stability of the filter media 8.

[0021] General working principle: Before use, the filter media 8 is vertically inserted through the mounting hole on the mounting plate. The bottom end of the mounting base 1 is inserted to the bottom of the mounting hole, while the top end of the mounting base 1 is attached to the top of the mounting hole. The mounting base 1 is then fixed using the fixing mechanism 2. During use, when pulse cleaning or airflow impact occurs, the outer tube 4 is forced to move the filter media 8. Because the corrugated guide grooves 5 are connected end to end and are wavy, when the first slider 6 slides along the corrugated guide grooves 5, the outer tube 4 will simultaneously generate rotation and up-and-down reciprocating motion (the rotation angle is determined by the path of the corrugated guide grooves 5, and the up-and-down displacement is determined by the path of the corrugated guide grooves 5). (Wave amplitude control of groove 5) changes the position of filter material 8. When the outer sleeve 4 moves down, the reset mechanism 7 is stretched. After the external force disappears, the outer sleeve 4 is reset by the elastic force, which strengthens the up and down shaking amplitude of filter material 8 and promotes the shedding of dust adhering to the surface. When filter material 8 rotates, its surface moves relative to the combing and cleaning mechanism 9, which drives the moving parts of the combing and cleaning mechanism 9 to move synchronously. When filter material 8 moves up and down, relative sliding occurs between filter material 8 and combing and cleaning mechanism 9, which can sweep off the dust on the surface of filter material 8 and reshape the wrinkles on filter material 8 to ensure the integrity of the shape of filter material 8.

[0022] In this embodiment, the fixing mechanism 2 includes a slide 201, a pressing block 202, a pressing surface 203, and a translation component. The slide 201 is evenly arranged in a ring array on the top of the mounting base 1, and the bottom end of the slide 201 is connected to the outside of the mounting base 1. The pressing block 202 is horizontally slidably arranged inside the slide 201. The pressing surface 203 is inclinedly arranged at the bottom of the outside of the pressing block 202, and the vertical direction of the pressing surface 203 is facing the top of the mounting base 1. The top of the mounting base 1 is provided with multiple sets of translation components that synchronously extend and retract the pressing block 202.

[0023] Local working principle: The slide 201 provides a horizontal sliding track for the extrusion block 202, and the bottom end of the slide 201 is connected to the outside of the mounting base 1, ensuring that the extrusion block 202 can extend outward and contact the mounting port on the mounting plate. During installation, the translation component drives multiple sets of extrusion blocks 202 to extend and retract synchronously along the slide 201. When the extrusion block 202 extends outward, the pressing surface 203 contacts the inner wall of the equipment mounting port. Due to the tilt angle characteristics, when the filter cartridge is subjected to downward gravity or installation force, the friction between the pressing surface 203 and the mounting port will increase with the increase of pressure, achieving the locking effect of "the more you press, the tighter it gets".

[0024] In this embodiment, the translation component includes a turntable 204, a planar thread 205, and a rotary locking component 208. The turntable 204 is horizontally rotatably mounted on the top of the mounting base 1. The top of the mounting base 1 has an annular groove that mates with the turntable 204. The bottom of the turntable 204 has a planar thread 205 that meshes with the top of the pressing block 202. The side of the mounting base 1 has a rotary locking component 208 that limits the position of the turntable 204.

[0025] Local working principle: When the turntable 204 rotates, the spiral structure of the planar thread 205 will convert the rotational motion into the horizontal linear motion of the extrusion block 202 for extrusion and fixation. After the turntable 204 is adjusted into place, the rotation locking component 208 locks its rotational position to prevent the extrusion block 202 from retracting due to the loosening of the turntable 204 under vibration conditions, thus ensuring installation stability.

[0026] In this embodiment, the top of the turntable 204 is provided with an annular protrusion, and the surface of the annular protrusion is uniformly provided with adjusting rods 206.

[0027] Local working principle: The adjusting rods 206 are evenly distributed on the annular raised surface, providing a gripping point for the operator. The turntable 204 can be rotated effortlessly through the lever principle, which facilitates the control of the extension and retraction range of the extrusion block 202.

[0028] In this embodiment, a pressure cap 207 is threaded onto the outer side of the mounting base 1, and the inner top of the pressure cap 207 is in contact with the top of the turntable 204.

[0029] Local working principle: The pressure cap 207 is threaded to the outer side of the mounting base 1. When tightened, its bottom is in contact with the top of the turntable 204, limiting the up and down movement of the turntable 204 and ensuring the meshing stability of the flat thread 205 and the extrusion block 202.

[0030] In this embodiment, the rotary locking assembly 208 includes a mounting groove 2081, a trapezoidal insert 2082, a first spring 2083, a toothed groove 2084, and a pull rope 2085. The mounting groove 2081 is evenly opened on the outer side of the annular groove. The trapezoidal insert 2082 is slidably arranged inside the mounting groove 2081. The first spring 2083 is provided between the trapezoidal insert 2082 and the inner end of the mounting groove 2081. The toothed groove 2084 is evenly opened on the outer side of the turntable 204. The trapezoidal insert 2082 is inserted into the inside of the toothed groove 2084. The outer end of the trapezoidal insert 2082 is fixed with a pull rope 2085. Multiple pull ropes 2085 slide out from the inside of the mounting base 1 and are fixedly connected to the inner side of the pressure cover 207.

[0031] Local working principle: Under normal conditions, the first spring 2083 pushes the trapezoidal insert 2082 out of the mounting slot 2081 and inserts it into the toothed groove 2084 on the outside of the turntable 204. Utilizing the inclined surface characteristic of the trapezoidal insert 2082, the turntable 204 is only allowed to rotate in the direction of the pressing block 202. When rotating in the opposite direction, the toothed groove 2084 locks the insert, preventing the turntable 204 from accidentally reversing and causing the pressing block 202 to loosen. Due to the inner connection of the pressure cap 207... During the unlocking operation, when the cover 207 is rotated and loosened, the pull rope 2085 can pull the trapezoidal insert 2082. The trapezoidal insert 2082 compresses the first spring 2083 and retracts into the mounting groove 2081, disengaging from the toothed groove 2084 and releasing the lock on the turntable 204. Conversely, when the cover 207 is normally fixed, the pull rope 2085 is relaxed, and the trapezoidal insert 2082 resets and locks the turntable 204, realizing the one-way locking of the turntable 204.

[0032] In this embodiment, the reset mechanism 7 includes a collar 701 and a second spring 702. The collar 701 is horizontally rotatably mounted on the outside of the outer sleeve 4. A bearing is provided between the collar 701 and the outer sleeve 4. The second spring 702 is fixedly mounted between the top of the collar 701 and the bottom of the mounting base 1.

[0033] Local working principle: The collar 701 is installed on the outside of the outer tube 4 through the bearing, so that the collar 701 remains stationary when the outer tube 4 rotates, avoiding the second spring 702 from being twisted and damaged due to the rotation of the outer tube 4. When the outer tube 4 is moved downward by the pulse force, the second spring 702 is stretched and stores elastic potential energy. After the external force disappears, the elastic potential energy is released, which drives the collar 701 and the outer tube 4 to return to the upward, enhancing the shaking amplitude of the filter material 8 and improving the dust removal effect.

[0034] In this embodiment, a sealing ring is provided at the bottom of the outer side of the inner sleeve 3, and the outer side of the sealing ring is in contact with the inner wall of the outer sleeve 4.

[0035] Local working principle: The fit between the sealing ring and the inner wall of the outer sleeve 4 can reduce the radial shaking between the two, making the movement of the outer sleeve 4 along the inner sleeve 3 more stable, avoiding excessive wear of the first slider 6 and the corrugated guide groove 5. In addition, it can also prevent unfiltered fluid from flowing directly into the annular port from the gap between the inner sleeve 3 and the outer sleeve 4, ensuring that all fluid must be filtered through the filter media 8 before flowing out, thus ensuring filtration efficiency.

[0036] In this embodiment, the combing and cleaning mechanism 9 includes a protective tube 901, an annular guide rail 902, a second slider 903, a vertical rod 904, an annular scraper 905, and a V-groove 906. The protective tube 901 is sleeved on the outside of the outer sleeve 4 and fixedly connected to the bottom end of the mounting base 1. The bottom of the protective tube 901 is fixed with the annular guide rail 902. The second slider 903 is evenly slidably arranged inside the annular guide rail 902. The bottom end of each second slider 903 is vertically fixed with a vertical rod 904. The annular scraper 905 is evenly and horizontally arranged between the vertical rods 904. The bottommost annular scraper 905 of the vertical rod 904 is in contact with the top of the base 10. The inner side of each annular scraper 905 is provided with a V-groove 906. The surface of the filter material 8 is in contact with the inner side of the V-groove 906.

[0037] Local working principle: The protective tube 901 is fixed to the bottom of the mounting base 1. The annular guide rail 902 provides an annular sliding path for the second slider 903. When the filter material 8 rotates, its surface is in contact with the inner side of the V-groove 906 of the annular scraper 905, which drives the vertical rod 904 and the second slider 903 to rotate synchronously along the annular guide rail 902. The inner side wall of the V-groove 906 slides vertically with the filter material 8, scraping off the dust on the surface of the filter material 8. The two side walls of the V-groove 906 are designed with an angle. When in contact with the filter material 8, it can shape the wrinkles to ensure that the width of the wrinkles of the filter material 8 is the same. In addition, it can comb the fallen or messy fibers to both sides to restore the fiber arrangement state, maintain the pore structure and filtration accuracy of the filter material 8, and avoid clogging caused by fiber accumulation.

[0038] like Figures 1-8 As shown in the figure, the manufacturing process of a polyester spunlace oleophobic and hydrophilic filter cartridge is as follows: Step 1: Preparation of filter material 8. Polyester short fibers or filaments are selected. The fiber fineness is selected according to the filtration accuracy requirements. After opening, the fibers are combed into a continuous fiber web by a carding machine. The fibers are arranged in parallel or randomly. Multiple single webs are stacked by a cross-laying machine to form a fiber web of a certain thickness. High-pressure water is used to flow through a perforated nozzle to impact the fiber web vertically or at an angle. Under the impact force of the water flow, the fibers entangle and interweave with each other to form a non-woven fabric with a stable structure. Step 2: Modification of filter material 8. The filter material 8 is placed in a plasma reaction chamber. At low temperature, high-energy plasma bombards the surface of polyester, breaking the molecular chain and introducing polar groups such as hydroxyl and carboxyl groups to enhance hydrophilicity. At the same time, the surface is micro-etched to form nanoscale roughness to assist in oleophobicity. The processing time is 30~300 seconds and the power is 50~300W. The parameters need to be controlled to avoid excessive etching and damage to the structure of filter material 8. Step 3: Forming and processing of filter media 8. Cut the filter media 8 according to the size of the filter cartridge, and then fold the filter media 8 to form pleats. The number of pleats is designed according to the thickness of the filter media 8 and the filtration requirements. When folding, it is necessary to ensure that the pleat spacing is uniform to avoid clogging. Then fix the filter media 8 to the bottom of the outer sleeve 4 and use a metal mesh tube for support. The metal mesh tube is nested inside the filter media 8, and its two ends are fixed to the bottom of the outer sleeve 4 and the base 10 respectively to enhance the structural strength of the filter media 8. Step 4: Install the reset mechanism 7 between the outer side of the outer sleeve 4 and the bottom of the mounting base 1. Then install the combing and cleaning mechanism 9 on the outer side of the filter material 8. Depending on the application scenario, select heat-resistant and media-resistant plastic or metal to seal the bottom of the filter material 8. The base 10 is fixed. Finally, assemble the fixing mechanism 2 onto the mounting base 1. The filter cartridge preparation is complete.

[0039] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A polyester spunlace oil-wicking hydrophilic filter cartridge comprising a mounting seat (1), characterized in that: The mounting base (1) has an annular opening at the middle position for vertical conduction, and the bottom of the side of the mounting base (1) has a concave design. The mounting base (1) has a fixing mechanism (2) on the outside. An inner sleeve (3) is vertically fixed at the bottom of the mounting base (1). An outer sleeve (4) is fitted on the outside of the inner sleeve (3). A corrugated guide groove (5) with the ends connected is opened on the side of the inner sleeve (3). A first slider (6) is uniformly slidably arranged inside the corrugated guide groove (5). The first slider (6) is fixed on the inner wall of the outer sleeve (4). A reset mechanism (7) for controlling the vertical reset of the outer tube (4) is provided between the side of the outer tube (4) and the bottom of the mounting base (1). The bottom end of the outer tube (4) is provided with filter material (8), and the outer side of the bottom end of the mounting base (1) is provided with a combing and cleaning mechanism (9) that is attached to the surface of the filter material (8) and cleans and combs the surface of the filter material (8). The bottom end of the filter material (8) is horizontally fixed with a base (10); The fixing mechanism (2) includes a slide (201), a pressing block (202), a pressing surface (203), and a translation component. The slide (201) is evenly arranged in a ring array on the top of the mounting base (1), and the bottom end of the slide (201) is connected to the outside of the mounting base (1). The pressing block (202) is horizontally slidably arranged inside the slide (201). The pressing surface (203) is inclinedly arranged at the bottom of the outside of the pressing block (202), and the vertical direction of the pressing surface (203) faces the top of the mounting base (1). The top of the mounting base (1) is provided with multiple translation components that extend and retract synchronously with the pressing block (202). The translation component includes a turntable (204), a flat thread (205), and a rotary locking component (208). The turntable (204) is horizontally rotatably mounted on the top of the mounting base (1). The top of the mounting base (1) is provided with an annular groove that mates with the turntable (204). The bottom of the turntable (204) is provided with a flat thread (205) that meshes with the top of the extrusion block (202). The side of the mounting base (1) is provided with a rotary locking component (208) that limits the turntable (204). The mounting base (1) is threaded with a pressure cap (207), and the inner top of the pressure cap (207) fits against the top of the turntable (204); The rotary locking assembly (208) includes a mounting groove (2081), a trapezoidal insert (2082), a first spring (2083), a toothed groove (2084), and a pull rope (2085). The mounting groove (2081) is evenly opened on the outside of the annular groove. The trapezoidal insert (2082) is slidably arranged inside the mounting groove (2081). The first spring (2083) is provided between the trapezoidal insert (2082) and the inner end of the mounting groove (2081). The toothed groove (2084) is evenly opened on the outside of the turntable (204). The trapezoidal insert (2082) is inserted into the inside of the toothed groove (2084). The outer end of the trapezoidal insert (2082) is fixed with a pull rope (2085). Multiple pull ropes (2085) slide out from the inside of the mounting base (1) and are fixedly connected to the inside of the pressure cover (207).

2. The polyester spunlace oil-wicking hydrophilic filter cartridge according to claim 1, characterized in that: The top of the turntable (204) is provided with an annular protrusion, and the surface of the annular protrusion is evenly provided with adjusting rods (206).

3. The polyester spunlace oil-wicking hydrophilic filter cartridge according to claim 1, characterized in that: The reset mechanism (7) includes a collar (701) and a second spring (702). The collar (701) is horizontally rotatably mounted on the outside of the outer sleeve (4). A bearing is provided between the collar (701) and the outer sleeve (4). The second spring (702) is fixedly mounted between the top of the collar (701) and the bottom of the mounting base (1).

4. The polyester spunlace oil-wicking hydrophilic filter cartridge according to claim 1, characterized in that: A sealing ring is provided at the bottom of the outer side of the inner sleeve (3), and the outer side of the sealing ring is in contact with the inner wall of the outer sleeve (4).

5. The polyester spunlace oil-wicking hydrophilic filter cartridge according to claim 1, characterized in that: The cleaning mechanism (9) includes a protective tube (901), an annular guide rail (902), a second slider (903), a vertical rod (904), an annular scraper (905), and a V-groove (906). The protective tube (901) is fitted over the outer sleeve (4) and fixedly connected to the bottom of the mounting base (1). The bottom of the protective tube (901) is fixed with an annular guide rail (902). The second slider (903) is evenly slidably arranged inside the annular guide rail (902). The bottom of the second slider (903) is vertically fixed with a vertical rod (904). Annular scrapers (905) are evenly and horizontally arranged between the vertical rods (904). The annular scraper (905) at the bottom of the vertical rod (904) is in contact with the top of the base (10). V-grooves (906) are opened on the inner side of the annular scraper (905). The surface of the filter material (8) is in contact with the inner side of the V-groove (906).

6. A manufacturing process for a polyester spunlace oleophobic and hydrophilic filter cartridge, based on a polyester spunlace oleophobic and hydrophilic filter cartridge according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Preparation of filter material (8) Select polyester short fiber or filament, select the fiber fineness according to the filtration precision requirements, and comb the opened fiber into a continuous fiber web by a carding machine. The fibers are arranged in parallel or randomly. The multi-layer single web is superimposed by a cross-laying machine to form a fiber web of a certain thickness. High pressure water is used to flow through a multi-hole nozzle to impact the fiber web vertically or at an angle. The fibers are intertwined and interwoven under the impact force of the water flow to form a non-woven fabric with a stable structure. Step 2: Modification of filter material (8) Place filter material (8) in plasma reaction chamber. At low temperature, high-energy plasma bombards the surface of polyester, breaks the molecular chain and introduces hydroxyl and carboxyl groups to enhance hydrophilicity. At the same time, surface micro-etching forms nanoscale roughness to assist oleophobicity. The processing time is 30~300 seconds and the power is 50~300W. The parameters need to be controlled to avoid excessive etching and damage to the structure of filter material (8). Step 3: Forming and processing of filter media (8). Cut the filter media (8) according to the size of the filter cartridge, and then fold the filter media (8) to form pleats. The number of pleats is designed according to the thickness of the filter media (8) and the filtration requirements. When folding, it is necessary to ensure that the pleat spacing is uniform to avoid clogging. Then fix the filter media (8) at the bottom of the outer tube (4) and use the metal mesh tube for support. The metal mesh tube is nested inside the filter media (8), and both ends are fixed to the bottom of the outer tube (4) and the base (10) respectively to enhance the structural strength of the filter media (8). Step 4: Install the reset mechanism (7) between the outer side of the outer sleeve (4) and the bottom of the mounting base (1), then install the combing and cleaning mechanism (9) on the outer side of the filter material (8), and select heat-resistant and media-resistant plastic or metal according to the application scenario to seal the bottom of the filter material (8). The base (10) is fixed. Finally, assemble the fixing mechanism (2) onto the mounting base (1). The filter cartridge preparation is completed.

Images