A kind of filtering device for para-aramid fiber spinning oil

Abstract

The present application relates to a kind of p-aramid spinning oil filter device, belong to oil filter technical field, solve the one of the problems that oil is easily mixed into bubble in the existing oil filter process, causes poor filtering effect and the insufficient stability of discharge.The present application includes closed communication feed module, filter module and aerating air extraction module;Filter module includes the filter cartridge for filtering oil;Aerating air extraction module extracts residual gas in filter cartridge, and imports protective gas therein;Feed module includes oil storage tank, guide tube and feed pipe in turn, and the feed pipe discharge end is communicated with filter cartridge feed end, and the inner wall of feed pipe is slidably provided with rubber stopper, and rubber stopper reciprocatingly slides along the inner wall of feed pipe, to realize the conduction and cut-off of the passageway between guide tube and the feed pipe.The present application reduces air intrusion by closed feed, cooperates two-stage exhaust mechanism, can weaken bubble interference, improves filtering precision and discharge stability.

Description

Technical Field

[0001] This invention relates to the field of oil filtration technology, and more particularly to a filtration device for para-aramid spinning oil. Background Technology

[0002] In the preparation and post-processing of para-aramid fibers, spinning oil is typically used to oil the fiber bundles. This imparts good smoothness, cohesion, and antistatic properties to the bundles, improves their running stability, reduces fuzzing and breakage, and enhances the quality of subsequent winding and processing. Oil filtration, as the final core purification process after oil preparation and before oiling on the machine, directly determines the cleanliness and stability of the oil, playing a decisive role in the quality of aramid spinning production. Its filtration accuracy, continuity, system airtightness, and degassing effect directly influence the cleanliness and stability of the oil, thus impacting the overall quality of aramid spinning production.

[0003] While existing filtration devices can achieve conventional filtration of impurities and agglomerates in spinning oils, the frequent opening and closing of containers or manual switching of pipelines during the feeding, filtration, and discharging processes of spinning oils is not only cumbersome but also disrupts the sealed environment of the filtration system, introducing outside air and increasing the number of bubbles inside the oil, while also causing the loss of volatile components in the oil. Furthermore, residual gases in the pipelines and cavities of traditional equipment cannot be discharged in a timely and orderly manner, nor can a protective gas atmosphere be formed. Significant gas accumulation in the pipelines and unstable discharge flow and status easily lead to uneven oil supply at the oiling station and gas blockage in the channels, thus affecting the uniformity of oiling of para-aramid filaments and the stability of the spinning process. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a filtration device for para-aramid spinning oil, which solves one of the problems in the existing spinning oil filtration process: frequent opening and closing of containers and switching of pipelines leads to the entry of outside air, causing the oil to mix with air bubbles, loss of volatile components, and the inability of residual gas in the pipeline to be discharged in an orderly manner, resulting in poor filtration effect and insufficient output stability.

[0005] The present invention provides a filtration device for para-aramid spinning oil, comprising: a feeding module, a filtering module and an air filling and extraction module, wherein the feeding module, the filtering module and the air filling and extraction module are in a sealed connection. The filtration module includes a fine filter cartridge; The gas filling and extraction module is used to extract residual gas from the fine filter cartridge and to introduce protective gas into the fine filter cartridge; The feeding module includes an oil storage tank, a guide pipe, and a conveying pipe connected in sequence. The discharge end of the conveying pipe is connected to the inlet end of the fine filter cartridge, and the discharge end of the guide pipe is connected to the side wall of the conveying pipe. A rubber stopper is slidably provided on the inner wall of the conveying pipe. The rubber stopper slides back and forth along the inner wall of the conveying pipe to realize the connection and disconnection between the guide pipe and the conveying pipe.

[0006] Furthermore, the inflation and degassing module includes a first feed pipe gas suction cylinder, a second feed pipe gas suction cylinder, a tail gas discharge tank, and a protective gas storage tank.

[0007] Furthermore, the first feed pipe gas suction cylinder is connected to the fine filter cylinder and the tail gas discharge tank respectively, and the second feed pipe gas suction cylinder is connected to the fine filter cylinder and the protective gas storage tank respectively.

[0008] Furthermore, it also includes an exhaust gas and residual liquid collection mechanism, which includes an exhaust pipe, an extraction piston, and an exhaust gas extraction pipe.

[0009] Furthermore, a receiving pipe is connected to the bottom of the fine filter cartridge, and an oil discharge box is connected to the bottom of the receiving pipe; one end of the exhaust gas extraction pipe is connected to the top of the oil discharge box, and the other end is connected to the exhaust pipe; the extraction piston is slidably disposed on the inner wall of the exhaust pipe.

[0010] Furthermore, a first fine filter cartridge pipe and a second fine filter cartridge pipe are fixedly connected to both sides of the outer wall of the fine filter cartridge. The first fine filter cartridge pipe is connected to the first feed pipe gas suction cylinder, and the second fine filter cartridge pipe is connected to the second feed pipe gas suction cylinder. The first feed pipe gas suction cylinder is connected to the tail gas discharge tank through a first pipe. The second feed pipe gas suction cylinder is connected to the protective gas storage tank through a second pipe.

[0011] Furthermore, the ends of the first fine filter cartridge pipe and the second fine filter cartridge pipe that are away from the fine filter cartridge are respectively fixedly connected to the bottom of the first feed pipe gas suction cylinder and the second feed pipe gas suction cylinder.

[0012] Furthermore, the side wall of the conveying pipe is provided with a feed hole, and the discharge end of the guide pipe is connected to the feed hole. During the process of the rubber stopper sliding back and forth along the inner wall of the conveying pipe, it switches between blocking the feed hole and opening the feed hole.

[0013] Furthermore, the exhaust gas and residual liquid collection mechanism also includes a receiving cylinder, which is connected to the exhaust pipe. A one-way valve is provided between the receiving cylinder and the exhaust pipe, with the direction of conduction from the exhaust pipe to the receiving cylinder. A one-way valve is provided on the exhaust gas extraction pipe, with the direction of conduction from the oil discharge box to the exhaust pipe.

[0014] Furthermore, it also includes a feed pipe connecting sleeve, which is sealed to the upper end of the feed pipe.

[0015] Furthermore, it also includes a motor and a transmission mechanism connected to the motor; the transmission mechanism is connected to the rubber stopper and drives the rubber stopper to slide back and forth along the inner wall of the feed pipe.

[0016] Furthermore, both the first and second gas suction cylinders of the feed pipe are slidably connected to piston push-pull rods on their inner walls; the transmission mechanism is also connected to the piston push-pull rods and drives the piston push-pull rods to slide back and forth along the inner walls of the first and second gas suction cylinders of the feed pipe, respectively.

[0017] Furthermore, the transmission mechanism is also connected to the suction piston and drives the suction piston to slide back and forth along the inner wall of the exhaust pipe.

[0018] Furthermore, a one-way valve is provided on the first fine filter cartridge pipe, the second fine filter cartridge pipe, the first pipe, and the second pipe.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: (1) This invention controls the opening and closing of the feed hole of the feed pipe by using a rubber stopper to realize intermittent feeding of para-aramid spinning oil in a closed state, reducing the intrusion of external air, reducing the risk of oil mixing with air bubbles and loss of volatile components during filtration, and maintaining the consistency of oil components; the gas filling and gas extraction module can orderly discharge the residual gas inside the fine filter cartridge and pipeline, and introduce protective gas to complete gas replacement. The cooperation between sealed feeding and gas replacement can further enhance the sealing isolation and degassing effect, reduce the interference of air bubbles on the filtration process, reduce the blockage caused by air bubbles adhering to the filter media, which is conducive to improving filtration accuracy and filtration efficiency, improving the continuity and stability of oil output, and alleviating the problems of unstable oil supply, nozzle blockage and uneven oil application in the subsequent oiling station.

[0020] (2) The present invention constructs two independent gas paths for residual gas extraction and protective gas supply by using a dual-feeding pipe gas suction cylinder, a tail gas discharge tank and a protective gas storage tank, combined with the one-way conduction function of a one-way valve. This enables the simultaneous discharge of residual gas in the fine filter cartridge and pipeline and the introduction of protective gas, thereby improving the replacement efficiency of protective gas, suppressing changes in oil composition and volatility loss, reducing bubble adhesion to filter media, reducing filtration resistance, maintaining stable filtration flux, and improving filtration stability and consistency of oil quality.

[0021] (3) The present invention sets up a tail gas and residual liquid collection mechanism, including an exhaust pipe, a suction piston, and a tail gas extraction pipe, as a secondary exhaust unit. This, together with the primary exhaust of the front-end inflation and suction module, forms a two-stage degassing process. Through the tail gas extraction pipe, exhaust pipe, and suction piston, residual gas in the oil discharge box is directionally extracted, compensating for the degassing blind spot in the end pipeline of the primary exhaust. The one-way valve and the receiving cylinder can directionally guide residual gas into the receiving cylinder, reducing gas backflow and escape. The tail gas and residual liquid collection mechanism achieves deep degassing during the discharge stage. Combined with the sealed feeding and primary exhaust, it further improves the cleanliness and discharge stability of the oil, reduces the interference of end bubbles on subsequent processes, and improves the on-site working environment.

[0022] (4) This invention includes a motor and a transmission mechanism connected to the motor. This transmission structure allows the exhaust gas and residual liquid collection mechanism to share a power source with the front-end feeding and gas filling / exhausting mechanisms. This ensures that the movement of the exhaust piston in the exhaust gas and residual liquid collection mechanism is synchronized with the opening and closing of the rubber stopper and the piston push-pull rod extraction operation. The secondary exhaust action can be carried out synchronously with the feeding rhythm, continuously extracting residual gas inside the oil discharge box, forming a two-stage degassing combination with the front-end primary exhaust. Combined with a fully sealed pipeline structure, it can reduce the infiltration of outside air into the filter device from the discharge end, reducing the probability of generating new bubbles. The integrated transmission layout eliminates the need for additional drive components, simplifying the overall structure of the filter device. The coordinated and unified movement helps to smoothly complete the filtration operation, further optimizing the oil delivery quality and reducing the interference of bubbles on subsequent processing.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a schematic diagram of the filtration device for para-aramid spinning oil according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the inflation and deflation module according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the feeding module according to an embodiment of the present invention; Figure 4 This is one of the structural schematic diagrams of the transmission support assembly according to an embodiment of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a second schematic diagram of the transmission support assembly according to an embodiment of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is the third schematic diagram of the transmission support assembly according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the filter frame according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the exhaust gas and residual liquid collection mechanism according to an embodiment of the present invention.

[0026] Figure label: 1-Finish filter cartridge; 11-First fine filter cartridge pipe; 12-Second fine filter cartridge pipe; 13-Receiving pipe; 14-Oil discharge box; 15-Oil outlet; 2-Feeding module; 21-Oil storage tank; 22-Guide pipe; 23-Conveying pipe; 231-Rubber stopper; 232-Conveying pipe connecting sleeve; 3-Inflation and extraction module; 31-First feed pipe gas suction cylinder; 311-First pipe; 312-Second pipe; 313-Piston push rod; 32-Exhaust gas discharge tank; 33-Protective gas storage tank; 34-Second feed pipe gas suction cylinder; 4-Exhaust gas and residual liquid collection mechanism; 41-Exhaust pipe; 42-Suction piston; 43-Exhaust gas extraction pipe; 44-Collection cylinder; 451-Guide side plate; 452-Exhaust pipe connecting plate; 453-Lifting horizontal plate; 454-Side lifting upright; 455-Slide chute rotating side plate; 456-Slider; 457-Rotating inclined rod; 458-Collection cylinder connecting sleeve; 5-Transmission support assembly; 511-H-type side plate; 512-Motor connecting plate; 513-L-type guide side plate; 514-Side plate; 515-Columnar rotating rod connecting block; 516-Side connecting upright; 517-L-type connecting upright plate; 518-C-type horizontal connecting plate; 521-Tail gas discharge tank connecting plate; 522-Protective gas storage tank connecting plate; 523-Rear connecting plate; 524-Oil storage tank connecting seat; 531-Motor; 532-Turntable; 533-Abutting block; 534-Oval sliding groove plate; 535-Convex push-pull plate; 536-Rack and pinion upright; 537-Side block; 538-Gear; 539-Columnar rotating rod; 540-Rotating disk; 541-Pull block; 542-Rotating pull rod; 543-Rotating arm; 544-Rotating rod; 545-Convex lifting block; 546-Pull-pull disk; 547-Rubber stopper connecting upright; 551-Filter frame; 552-Fine filter cartridge collar; 553-L-shaped side plate; 554-Bottom connecting side rod. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0028] Example 1: To address the problems of poor filtration and insufficient output stability caused by frequent opening and closing of containers and switching of pipelines during the existing spinning oil filtration process, which leads to the entry of outside air, causing air bubbles to mix into the oil, loss of volatile components, and inability to orderly discharge residual gas from the pipeline, a specific embodiment of the present invention discloses a filtration device for para-aramid spinning oil, such as... Figures 1-4 As shown, it includes: a feeding module 2, a filtering module and an inflation / extraction module 3; the feeding module 2 and the filtering module and the inflation / extraction module 3 are all connected in a sealed manner.

[0029] The filtration module includes a fine filter cartridge 1, which is used to filter spinning oil. The feeding module 2 includes an oil storage tank 21, a guide pipe 22, and a conveying pipe 23 connected in sequence. The inlet end of the conveying pipe 23 is located on the side wall of the pipe body, and the outlet end of the conveying pipe 23 is connected to the inlet end of the fine filter cartridge 1. A rubber stopper 231 is slidably provided on the inner wall of the conveying pipe 23. The rubber stopper 231 slides back and forth on the inner wall of the conveying pipe 23 to control the opening and closing of the inlet end of the guide pipe 22 and the conveying pipe 23, thereby realizing intermittent closed feeding of the oil. The gas filling and extraction module 3 is used to extract residual gas in the fine filter cartridge 1 and to introduce protective gas into the fine filter cartridge 1.

[0030] Specifically, the side wall of the conveying pipe 23 is provided with a feed hole, the discharge end of the guide pipe 22 is connected to the feed hole, and the rubber stopper 231 switches between blocking and opening the feed hole during the process of sliding back and forth along the inner wall of the conveying pipe 23, so as to realize the closed intermittent feeding of oil.

[0031] Preferably, the protective gas is nitrogen or an inert gas.

[0032] By controlling the opening and closing of the feed hole of the feed pipe 23 through the rubber stopper 231, intermittent feeding of the para-aramid spinning oil agent in a closed state is achieved, reducing the intrusion of external air, reducing the risk of air bubbles mixed into the oil agent and loss of volatile components, and maintaining the consistency of the oil agent components. The air filling and degassing module 3 can orderly discharge the residual gas inside the fine filter cartridge 1 and the pipeline, and introduce protective gas to complete the gas replacement. The cooperation between sealed feeding and gas replacement can further enhance the sealing isolation and degassing effect, reduce the interference of air bubbles on the filtration and conveying process, reduce the blockage caused by air bubbles adhering to the filter material, which is conducive to improving the filtration accuracy and filtration efficiency, improving the continuity and stability of oil agent output, and alleviating the problems of unstable oil supply, nozzle blockage and uneven oil application in the subsequent oiling station.

[0033] The top of the fine filter cartridge 1 is fixedly connected to the bottom of the conveying pipe 23. The bottom of the fine filter cartridge 1 is connected to the receiving pipe 13. The bottom of the receiving pipe 13 is connected to the oil discharge box 14. The front end of the oil discharge box 14 is fixedly connected to the oil outlet 15.

[0034] The filtration device for para-aramid spinning oil also includes a transmission support assembly 5, which includes a motor 531 and a transmission mechanism that is connected to the motor 531. The transmission mechanism is connected to the rubber stopper 231 and drives the rubber stopper 231 to slide back and forth along the inner wall of the feed pipe 23.

[0035] Furthermore, to address the issues of air bubble retention in existing filtration devices, which leads to increased resistance, unstable flow, and poor filtration stability and oil quality, the gas filling and extraction module 3 includes a first feed pipe gas suction cylinder 31, a second feed pipe gas suction cylinder 34, an exhaust gas discharge tank 32, and a protective gas storage tank 33.

[0036] The first feed pipe gas suction cylinder 31 is connected to the fine filter cylinder 1 and the tail gas discharge tank 32 respectively, and is used to extract the residual gas in the fine filter cylinder 1 and its connected filtration area and introduce it into the tail gas discharge tank 32; the second feed pipe gas suction cylinder 34 is connected to the fine filter cylinder 1 and the protective gas storage tank 33 respectively, and is used to introduce the protective gas in the protective gas storage tank 33 into the fine filter cylinder 1 and its connected filtration area.

[0037] The outer walls of the fine filter cartridge 1 are fixedly connected to the first fine filter cartridge pipe 11 and the second fine filter cartridge pipe 12. The first fine filter cartridge pipe 11 is connected to the first feed pipe gas suction cylinder 31, and the second fine filter cartridge pipe 12 is connected to the second feed pipe gas suction cylinder 34. The first feed pipe gas suction cylinder 31 is connected to the tail gas discharge tank 32 through the first pipe 311. The second feed pipe gas suction cylinder 34 is connected to the protective gas storage tank 33 through the second pipe 312.

[0038] One-way valves (not shown in the figure) are installed on the first fine filter cartridge pipe 11, the second fine filter cartridge pipe 12, the first pipe 311, and the second pipe 312. The one-way valve on the first fine filter cartridge pipe 11 only allows the flow of the fine filter cartridge 1 to the first feed pipe gas suction cylinder 31. The one-way valve on the second fine filter cartridge pipe 12 only allows the flow of the second feed pipe gas suction cylinder 34 to the fine filter cartridge 1. The one-way valve on the first pipe 311 only allows the flow of the first feed pipe gas suction cylinder 31 to the tail gas discharge tank 32. The one-way valve on the second pipe 312 only allows the flow of the protective gas storage tank 33 to the second feed pipe gas suction cylinder 34.

[0039] Furthermore, piston push-pull rods 313 are slidably connected to the inner walls of the first conveying pipe gas suction cylinder 31 and the second conveying pipe gas suction cylinder 34; the transmission mechanism is connected to the two piston push-pull rods 313 and drives the two piston push-pull rods 313 to slide back and forth along the inner walls of the first conveying pipe gas suction cylinder 31 and the second conveying pipe gas suction cylinder 34 respectively.

[0040] Through the first feed pipe gas suction cylinder 31, the second feed pipe gas suction cylinder 34, the tail gas discharge tank 32, and the protective gas storage tank 33, and with the one-way conduction function of the one-way valve, two independent gas paths are constructed for residual gas extraction and protective gas replenishment, respectively. The transmission mechanism drives the piston push-pull rod 313 to reciprocate, so that the residual gas extraction and protective gas replenishment actions are synchronized with the closed feeding action controlled by the rubber stopper 231, reducing gas backflow, bubble retention, or air intrusion caused by the timing misalignment of each process. It can also timely discharge residual gas in the fine filter cartridge 1 and pipeline and introduce protective gas while the oil is intermittently fed, improving the replacement efficiency of the protective gas, suppressing changes in oil composition and volatility loss, reducing bubble adhesion to the filter material, reducing filtration resistance, and helping to maintain a stable filtration flux, thereby improving filtration stability and consistency of oil quality. The ends of the first fine filter cartridge pipe 11 and the second fine filter cartridge pipe 12 away from the fine filter cartridge 1 are respectively fixedly connected to the bottom of the first feed pipe gas suction cylinder 31 and the second feed pipe gas suction cylinder 34.

[0041] Furthermore, to address the problem of incomplete degassing in existing filtration devices, resulting in residual air bubbles escaping and affecting oil cleanliness and discharge stability, interfering with subsequent processes and polluting the working environment, the filtration device also includes a tail gas and residual liquid collection mechanism 4, such as... Figure 10 As shown, the exhaust gas and residual liquid collection mechanism 4 includes an exhaust pipe 41, an exhaust piston 42, and an exhaust gas extraction pipe 43.

[0042] One end of the exhaust gas extraction pipe 43 is connected to the top of the oil discharge box 14, and the other end of the exhaust gas extraction pipe 43 is connected to the exhaust pipe 41. The suction piston 42 is slidably disposed on the inner wall of the exhaust pipe 41. When the suction piston 42 slides upward, a negative pressure is formed in the exhaust pipe 41, and the residual gas in the oil discharge box 14 is drawn into the exhaust pipe 41 through the exhaust gas extraction pipe 43.

[0043] Furthermore, the exhaust gas and residual liquid collection mechanism 4 also includes a receiving cylinder 44, which is connected to the exhaust pipe 41. A one-way valve is provided between the receiving cylinder 44 and the exhaust pipe 41, with the direction of conduction from the exhaust pipe 41 to the receiving cylinder 44. A one-way valve is provided on the exhaust gas extraction pipe 43, with the direction of conduction from the oil discharge box 14 to the exhaust pipe 41. When the extraction piston 42 slides downward, a positive pressure is formed in the exhaust pipe 41, which guides the residual gas in the exhaust pipe 41 into the receiving cylinder 44.

[0044] The exhaust gas and residual liquid collection mechanism 4, acting as a secondary exhaust unit, forms a two-stage degassing system with the primary exhaust of the front-end inflation and extraction module 3. Through the exhaust gas extraction pipe 43, exhaust pipe 41, and extraction piston 42, it directionally extracts residual gas from the oil discharge box 14, compensating for the degassing blind spot in the terminal pipeline of the primary exhaust. A one-way valve and a receiving cylinder allow residual gas to be directionally guided into the receiving cylinder, reducing gas backflow and escape. The exhaust gas and residual liquid collection mechanism 4 achieves deep degassing during the discharge stage. Combined with sealed feeding and primary exhaust, this further improves the cleanliness and discharge stability of the oil, reduces the interference of terminal air bubbles on subsequent processes, and improves the on-site working environment.

[0045] Furthermore, the transmission mechanism is connected to the suction piston 42, and the transmission mechanism drives the suction piston 42 to slide back and forth along the inner wall of the exhaust pipe 41.

[0046] The exhaust gas and residual liquid collection mechanism 4 shares a power source with the front-end feeding and gas extraction processes via a transmission mechanism. This ensures that the movement of the extraction piston 42 in the exhaust gas and residual liquid collection mechanism 4 is synchronized with the opening and closing of the rubber stopper 231 and the extraction operation of the piston push rod 313. The secondary exhaust action is synchronized with the feeding rhythm, continuously extracting residual gas inside the oil discharge box 14, forming a two-stage synchronous degassing process with the front-end primary exhaust. Combined with a fully sealed pipeline structure, this reduces the infiltration of outside air from the discharge end, lowering the probability of new bubble formation. The integrated transmission layout eliminates the need for additional drive components, simplifying the overall equipment structure and ensuring coordinated and unified movement. This contributes to the smooth completion of the end-of-line degassing operation, further optimizing the oil delivery quality and reducing the interference of bubbles on subsequent processing steps.

[0047] Furthermore, to address the problem of independent drive of various mechanisms and disordered timing of feeding and venting actions, which easily leads to bubble retention and reduced filtration efficiency, such as... Figures 4-8 As shown, the transmission mechanism includes: a turntable 532, a stop block 533, an elliptical slide plate 534, a convex push-pull plate 535, a rack and pinion rod 536, a gear 538, a columnar rotating rod 539, a rotating disk 540, a pull block 541, a rotating pull rod 542, a rotating arm 543, a rotating rod 544, a convex lifting block 545, a push-pull plate 546, and a rubber stopper connecting rod 547.

[0048] Specifically, the transmission support assembly 5 also includes two H-shaped side plates 511, with a motor connecting plate 512 between the two H-shaped side plates 511. A motor 531 is mounted on the motor connecting plate 512, and the output end of the motor 531 is fixedly connected to the turntable 532. An abutment 533 is eccentrically mounted on the outer edge of the turntable 532. The abutment 533 is slidably embedded in the elliptical groove of the elliptical slide plate 534. A convex push-pull plate 535 is mounted on the top of the elliptical slide plate 534, and rack rods 536 are mounted on both the left and right sides of the convex push-pull plate 535. An L-shaped guide side plate 513 is mounted on the H-shaped side plate 511, and the rack rods 536 are slidably connected to the L-shaped guide side plate 513. The L-shaped guide side plate 513 provides guidance for the rack rods 536, and a side block 537 is fixedly mounted on the bottom of the rack rods 536.

[0049] Each H-shaped side plate 511 has a set of side plate structures and a columnar rotating rod connecting block 515 on both sides. Each set of side plate structures includes two side plates 514. The columnar rotating rod 539 passes through the two sets of side plate structures and the two columnar rotating rod connecting blocks 515, and is rotatably mounted on the two sets of side plate structures and the two columnar rotating rod connecting blocks 515. A rotating disk 540 is provided between the two side plates 514 of each side plate structure. The rotating disk 540 is fixedly connected to the columnar rotating rod 539. A pull block 541 is fixedly connected to the outer edge of the rotating disk 540. A rotating pull rod 542 is rotatably connected to the pull block 541. Rotating arms 543 are rotatably connected to the top and bottom of the two side plates 514 of each side plate structure. The ends of the top and bottom rotating arms 543 away from the side plates 514 are movably connected to the side connecting rod 516. The end of the rotating rod 542 away from the pull block 541 is rotatably connected to the inner wall of the bottom rotating arm 543. A gear 538 is fixedly connected to one end of the columnar rotating rod 539. The gear 538 meshes with the rack rod 536.

[0050] The rotating arm 543 located at the bottom is rotatably connected to a rotating rod 544. The bottom of the rotating rod 544 is rotatably connected to a convex lifting block 545. The convex lifting block 545 is fixedly connected to a push-pull plate 546. The bottom of the push-pull plate 546 is fixedly connected to a rubber stopper connecting rod 547. The bottom end of the rubber stopper connecting rod 547 is fixedly connected to a rubber stopper 231. The outer wall of the rubber stopper 231 is slidably disposed on the inner wall of the conveying pipe 23.

[0051] When refining and filtering the para-aramid spinning oil, the oil to be filtered is first added to the oil storage tank 21. The motor 531 is then started, and the output of the motor 531 drives the turntable 532 to rotate. The rotation of the turntable 532 causes the abutment 533 fixed on its front side to move in a circular motion, which in turn drives the elliptical slide plate 534 to move up and down reciprocally. The up and down movement of the elliptical slide plate 534 pushes the convex push-pull plate 535 to move synchronously. The movement of the convex push-pull plate 535 drives the rack uprights 536 on both sides to slide up and down under the guidance of the L-shaped guide side plate 513. The up and down sliding of the rack uprights 536 drives the gear 538 meshing with them to rotate. The rotation of the gear 538 drives... The columnar rotating rod 539 and the rotating disk 540 fixed on it rotate together. The rotation of the rotating disk 540 transmits the motion to the rotating arm 543 through the pull block 541 and the rotating pull rod 542, so that the rotating arm 543 swings under the constraint of the side connecting rod 516. The swing of the rotating arm 543 drives the rotating rod 544 to move up and down. The up and down movement of the rotating rod 544 pushes the convex lifting block 545 to slide up and down in the middle of the H-shaped side plate 511. The sliding of the convex lifting block 545 drives the rubber stopper 231 to slide up and down in the conveying pipe 23 through the push-pull plate 546 and the rubber stopper connecting rod 547, so as to control the opening and closing of the conveying pipe 23, thereby achieving the effect of sealed feeding.

[0052] An L-shaped connecting plate 517 is fixedly installed on each of the front and rear sides of the H-shaped side plate 511. A C-shaped horizontal connecting plate 518 is provided between the two L-shaped connecting plates 517. The two ends of the C-shaped horizontal connecting plate 518 are fixedly connected to the two L-shaped connecting plates 517 respectively. A conveying pipe connecting sleeve 232 is fixedly installed on the C-shaped horizontal connecting plate 518. The conveying pipe connecting sleeve 232 is sealed to the upper end of the conveying pipe 23 to prevent oil leakage and further improve the sealing performance of the device. The first conveying pipe gas suction cylinder 31 and the second conveying pipe gas suction cylinder 34 are respectively located on the outside of the two C-shaped horizontal connecting plates 518. The piston push rod 313 is fixedly connected to the bottom of the convex lifting block 545.

[0053] While the motor 531 drives the feed pipe 23 to open and close, the up-and-down movement of the rotating rod 544 in the transmission mechanism also drives the two piston push-pull rods 313 to reciprocate in the first feed pipe gas suction cylinder 31 and the second feed pipe gas suction cylinder 34 respectively, so as to realize the extraction of residual gas in the filtration area and the replenishment of protective gas.

[0054] Specifically, when the piston push rod 313 moves upward, a negative pressure is formed inside the first feed pipe gas suction cylinder 31, drawing the residual gas in the fine filter cylinder 1 and related connecting pipes into the inner cavity of the first feed pipe gas suction cylinder 31 through the first fine filter cylinder pipe 11. When the piston push rod 313 moves downward, a positive pressure is formed inside the first feed pipe gas suction cylinder 31, leading the residual gas inside the first feed pipe gas suction cylinder 31 to the exhaust gas discharge tank through the first pipe 311. In step 32; when the piston push rod 313 moves upward, a negative pressure is formed inside the second feed pipe gas suction cylinder 34, and the protective gas in the protective gas storage tank 33 is extracted into the inner cavity of the second feed pipe gas suction cylinder 34 through the second pipe 312. When the piston push rod 313 moves downward, a positive pressure is formed inside the second feed pipe gas suction cylinder 34, and the protective gas in the inner cavity of the second feed pipe gas suction cylinder 34 is introduced into the fine filter cylinder 1 through the second fine filter cylinder pipe 12.

[0055] Under the combined effect of intermittent feeding and gas extraction in the sealing conveying pipe 23, the para-aramid spinning oil enters the conveying pipe 23 from the oil storage tank 21 through the guide pipe 22. After being filtered by the fine filter cartridge 1, it is discharged from the oil outlet 15 of the oil outlet box 14 for use in subsequent oiling stations. By controlling the up and down sliding speed of the rack and pinion rod 536, the conveying rhythm and the gas extraction rhythm can be further adjusted, thereby improving the oil filtration quality and the stability of the supply.

[0056] Furthermore, such as Figure 9 As shown, a filter frame 551 is provided at the bottom of the transmission support assembly 5. A fine filter cylinder collar 552 is fixedly connected to the filter frame 551. The fine filter cylinder 1 is fixedly disposed on the inner wall of the fine filter cylinder collar 552.

[0057] The filter frame 551 includes two L-shaped side plates 553. The top of the L-shaped side plate 553 is fixedly provided with a tail gas discharge tank connecting plate 521, and the bottom of the L-shaped side plate 553 is fixedly provided with a bottom connecting side rod 554. The inner side of the two L-shaped side plates 553 is fixedly connected to a fine filter cylinder collar 552, and the inner wall of the fine filter cylinder collar 552 is fixedly connected to a fine filter cylinder 1. The oil discharge box 14 is fixedly connected to the inner side of the two L-shaped side plates 553.

[0058] The exhaust gas discharge tank 32 is mounted on the exhaust gas discharge tank connecting plate 521. A rear connecting plate 523 is fixedly mounted on the H-shaped side plate 511. A protective gas storage tank connecting plate 522 is fixedly mounted on the rear connecting plate 523. A protective gas storage tank 33 is mounted on the protective gas storage tank connecting plate 522. An oil storage tank connecting seat 524 is fixedly connected to the exhaust gas discharge tank connecting plate 521. An oil storage tank 21 is mounted on top of the oil storage tank connecting seat 524.

[0059] Furthermore, one or more of the exhaust gas discharge tank 32 and the protective gas storage tank 33 are provided.

[0060] Furthermore, to address the issues of independent drive of various mechanisms, disordered timing of exhaust gas extraction and feeding, and charging / discharging actions, which easily lead to bubble retention and reduced filtration efficiency, such as... Figure 10 As shown, the transmission mechanism also includes: a rotating inclined rod 457, a slider 456, a sliding groove rotating side plate 455, a side lifting upright rod 454, and a lifting horizontal plate 453.

[0061] The exhaust gas and residual liquid collection mechanism 4 includes two guide side plates 451. An exhaust pipe connecting plate 452 is provided between the two guide side plates 451. An exhaust pipe 41 is fixedly connected to the middle of the inner wall of the exhaust pipe connecting plate 452. An air extraction piston 42 is slidably provided on the inner wall of the exhaust pipe 41. A lifting horizontal plate 453 is fixedly connected to the top of the air extraction piston 42. Side lifting uprights 454 are fixedly provided on both sides of the lifting horizontal plate 453. The side lifting uprights 454 are slidably connected to the inner side of the guide side plates 451. A sliding groove rotating side plate 455 is rotatably connected to the top of the side lifting uprights 454. A slider 456 is slidably connected to the inner side of the sliding groove rotating side plate 455. A rotating inclined rod 457 is fixedly connected to the inner end of the slider 456. The top of the rotating inclined rod 457 is rotatably connected to the inner side of the side block 537.

[0062] The bottom of the guide side plate 451 is fixedly connected to the outside of the two bottom connecting side rods 554. The two sides of the outer wall of the receiving cylinder 44 are fixedly connected to the receiving cylinder connecting sleeves 458. The left and right sides of the two receiving cylinder connecting sleeves 458 are fixedly connected to the inside of the two bottom connecting side rods 554.

[0063] While the motor 531 drives the feed pipe 23 to open and close, the rack and pinion rod 536 moves up and down and drives the side block 537 to move up and down synchronously. When the side block 537 moves up and down, it pulls the two rotating inclined rods 457 that are rotatably connected to it. Since the other end of the rotating inclined rod 457 is fixed on the slider 456 and the slider 456 is slidably connected to the inside of the chute rotating side plate 455, the movement of the rotating inclined rod 457 will drive the slider 456 to slide inside the chute rotating side plate 455, thereby causing the chute rotating side plate 455 to swing. The swing of the chute rotating side plate 455 will drive the side lifting rod 454 to slide up and down inside the guide side plate 451. The up and down sliding of the side lifting rod 454 will cause the lifting horizontal plate 453 to move up and down synchronously. The movement of the lifting horizontal plate 453 will drive the suction piston 42 to slide up and down on the inner wall of the exhaust pipe 41.

[0064] The working process of this invention is as follows: When it is necessary to filter the para-aramid spinning oil, the oil to be treated is first added to the oil storage tank 21. Then, the motor 531 is started to drive the turntable 532 to rotate. The rotation of the turntable 532 causes the abutment 533 fixed on its front side to make a circular motion, which drives the elliptical slide plate 534 to move up and down reciprocally. The up and down movement of the elliptical slide plate 534 pushes the convex push-pull plate 535 to move synchronously. The convex push-pull plate 535 drives the rack uprights 536 on both sides to move along the L-shaped guide side plate 513. Under the guidance of the rack and pinion rod 536, the rack and pinion rod 536 slides up and down; the up and down sliding of the rack and pinion rod 536 drives the gear 538 meshing with it to rotate, and the gear 538 drives the cylindrical rotating rod 539 and the rotating disk 540 to rotate together; when the rotating disk 540 rotates, it transmits power to the rotating arm 543 through the pull block 541 and the rotating pull rod 542 in sequence. The rotating arm 543 swings back and forth under the constraint of the side connecting rod 516, and drives the rotating rod 544 to make a lifting and lowering motion; the lifting and lowering motion of the rotating rod 544 pushes the convex lifting block 545 to slide up and down, through The push-pull plate 546 and the rubber stopper connecting rod 547 drive the rubber stopper 231 to slide up and down inside the feed pipe 23, controlling the opening and closing of the feed pipe 23. Simultaneously, this drives the piston push-pull rod 313 to reciprocate within the first feed pipe gas suction cylinder 31 and the second feed pipe gas suction cylinder 34, achieving the suction and discharge of residual gas and protective gas. Under the synergistic effect of the opening and closing of the feed pipe 23 and the gas suction and discharge, the para-aramid spinning oil agent enters the feed pipe 23 from the oil agent storage tank 21 through the guide pipe 22 in a closed state. After being filtered by the fine filter cartridge 1, the oil is discharged from the oil outlet 15 of the oil discharge box 14. At the same time, the two rack and pinion rods 536 drive the side block 537 to move up and down, pull the rotating inclined rod 457, and make the slider 456 slide in the sliding side plate 455 of the chute. The sliding side plate 455 swings and drives the side lifting rod 454 to slide up and down, so that the lifting horizontal plate 453 drives the suction piston 42 to slide up and down on the inner wall of the exhaust pipe 41, extracting the residual gas in the oil discharge box 14 and introducing it into the tail gas and residual liquid collection mechanism 4 for treatment.

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A filtration device for para-aramid spinning oil, characterized in that, include: The feeding module (2), the filtering module and the air inflation and degassing module (3) are connected in a sealed manner. The filtration module includes a fine filter cartridge (1); The gas filling and extraction module (3) is used to extract the residual gas in the fine filter cartridge (1) and to introduce protective gas into the fine filter cartridge (1); The feeding module (2) includes an oil storage tank (21), a guide pipe (22), and a conveying pipe (23) connected in sequence. The discharge end of the conveying pipe (23) is connected to the feed end of the fine filter cartridge (1). The discharge end of the guide pipe (22) is connected to the side wall of the conveying pipe (23). A rubber stopper (231) is slidably provided on the inner wall of the conveying pipe (23). The rubber stopper (231) slides back and forth along the inner wall of the conveying pipe (23) to realize the connection and disconnection between the guide pipe (22) and the conveying pipe (23).

2. The filtration device for para-aramid spinning oil according to claim 1, characterized in that: The gas filling and extraction module (3) includes a first feed pipe gas suction cylinder (31), a second feed pipe gas suction cylinder (34), a tail gas discharge tank (32), and a protective gas storage tank (33).

3. The filtration device for para-aramid spinning oil according to claim 2, characterized in that: The first feed pipe gas suction cylinder (31) is connected to the fine filter cylinder (1) and the tail gas discharge tank (32) respectively, and the second feed pipe gas suction cylinder (34) is connected to the fine filter cylinder (1) and the protective gas storage tank (33) respectively.

4. The filtration device for para-aramid spinning oil according to claim 1, characterized in that: It also includes an exhaust gas and residual liquid collection mechanism (4), which includes an exhaust pipe (41), an air extraction piston (42), and an exhaust gas extraction pipe (43).

5. The filtration device for para-aramid spinning oil according to claim 4, characterized in that: The bottom of the fine filter cartridge (1) is connected to a receiving pipe (13), and the bottom of the receiving pipe (13) is connected to an oil discharge box (14); one end of the exhaust gas extraction pipe (43) is connected to the top of the oil discharge box (14), and the other end is connected to the exhaust pipe (41); the exhaust piston (42) is slidably disposed on the inner wall of the exhaust pipe (41).

6. The filtration device for para-aramid spinning oil according to claim 3, characterized in that: The outer walls of the fine filter cartridge (1) are fixedly connected to a first fine filter cartridge pipe (11) and a second fine filter cartridge pipe (12). The first fine filter cartridge pipe (11) is connected to the first feed pipe gas suction cylinder (31), and the second fine filter cartridge pipe (12) is connected to the second feed pipe gas suction cylinder (34). The first feed pipe gas suction cylinder (31) is connected to the tail gas discharge tank (32) through the first pipe (311). The second feed pipe gas suction cylinder (34) is connected to the protective gas storage tank (33) through the second pipe (312).

7. The filtration device for para-aramid spinning oil according to claim 6, characterized in that: The ends of the first fine filter cylinder pipe (11) and the second fine filter cylinder pipe (12) away from the fine filter cylinder (1) are respectively fixedly connected to the bottom of the first feed pipe gas suction cylinder (31) and the second feed pipe gas suction cylinder (34).

8. The filtration device for para-aramid spinning oil according to claim 1, characterized in that: The feed pipe (23) has a feed hole on its side wall. The discharge end of the guide pipe (22) is connected to the feed hole. The rubber stopper (231) switches between blocking and opening the feed hole as it slides back and forth along the inner wall of the feed pipe (23).

9. The filtration device for para-aramid spinning oil according to claim 4, characterized in that: The exhaust gas and residual liquid collection mechanism (4) also includes a receiving cylinder (44), which is connected to the exhaust pipe (41). A one-way valve with the conduction direction from the exhaust pipe (41) to the receiving cylinder (44) is provided between the receiving cylinder (44) and the exhaust pipe (41). A one-way valve with the conduction direction from the oil discharge box (14) to the exhaust pipe (41) is provided on the exhaust gas extraction pipe (43).

10. The filtration device for para-aramid spinning oil according to claim 1, characterized in that: It also includes a feed pipe connecting sleeve (232), which is sealed to the upper end of the feed pipe (23).

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