PP cotton filter element and activated carbon composite integrated filter device

Abstract

This invention belongs to the technical field of filtration devices, specifically an integrated filtration device combining PP cotton filter cartridges and activated carbon. The proposed solution includes a first fixed cylinder, with a rotatable opening / closing cover rotatably connected to one side of the first fixed cylinder. The opening / closing cover and the first fixed cylinder are rotatably connected via a first rotating shaft. A filter cartridge is rotatably connected to one side of the first fixed cylinder, located between the opening / closing cover and the first fixed cylinder. Sealing caps are threaded to the top and bottom of the filter cartridge. Lifting and lowering fitting pipes, capable of axial displacement to open and close the media channel, are installed at both the top and bottom of the first fixed cylinder. This invention employs a split-type flip-opening design, coupled with a gear-driven lifting and lowering fitting pipe structure. When replacing the filter cartridge, it is not necessary to remove the external conveying pipe connected to the top and bottom connecting pipes of the first fixed cylinder. Replacement can be completed simply by flipping the opening / closing cover and the filter cartridge, and by removing and installing the sealing cap using a hexagonal plate. This significantly shortens the operation process and reduces maintenance time.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and in particular to an integrated filtration device combining PP cotton filter element and activated carbon. Background Technology

[0002] In many fields such as water treatment and industrial fluid filtration, filtration devices are the core equipment for separating impurities and ensuring the cleanliness of media. The core filtration component of existing filtration devices is usually the filter cartridge. The filter cartridge generally consists of three basic structures: the filter cylinder, the inlet end, and the outlet end. The filter cylinder serves as the main carrier of the filter material and is filled with materials with specific filtration functions, such as activated carbon and filter cotton. The inlet end and the outlet end are connected to the conveying system of the medium to be filtered and the receiving system of the clean medium through connecting pipes, respectively, forming a complete filtration channel. This ensures that the medium to be filtered can smoothly enter the interior of the filter cylinder. After the filter material adsorbs and intercepts impurities, the clean medium that meets the requirements is discharged from the outlet end.

[0003] However, in actual use, as the filtration time increases, the filter material inside the filter cartridge will gradually lose its filtration capacity due to the adsorption of a large number of impurities. At this time, the filter material must be replaced regularly to ensure the continuous and effective operation of the filtration device. Since the inlet and outlet ends are fixedly connected to the external connecting pipes, and the filter cartridge is an integrated or tightly assembled structure with the inlet and outlet ends, when it is necessary to replace the filter material inside the filter cartridge, the operator must first remove the entire external conveying pipe connected to the inlet and outlet ends. After the pipes are removed, the filter cartridge, along with the inlet and outlet ends, should be taken out from the installation position of the filtration device. Then, the sealing structure of the filter cartridge can be opened, the expired filter material can be poured out, and new filter material can be filled in. After the replacement is completed, the filter cartridge must be reinstalled in its original position, and the connection between the inlet and outlet ends and the external pipes must be restored one by one. During the connection process, the sealing performance must be ensured to avoid media leakage.

[0004] The above-mentioned filter material replacement process is lengthy and complicated. It not only requires operators to have professional assembly skills, but also consumes a lot of time. At the same time, frequent disassembly and installation of connecting pipes can easily lead to wear of pipe interfaces and aging of seals, increasing the risk of media leakage and thus affecting the stability and safety of the filtration system.

[0005] Therefore, an integrated filtration device combining PP cotton filter element and activated carbon is needed. Summary of the Invention

[0006] The present invention proposes an integrated PP cotton filter element and activated carbon composite filtration device, which solves the problems of the lengthy and cumbersome operation process of filter element material replacement in the prior art. It not only requires operators to have professional assembly skills, but also consumes a lot of time. At the same time, frequent disassembly and installation of connecting pipes can easily lead to wear of pipe interfaces and aging of seals, increasing the risk of media leakage and thus affecting the stability and safety of the filtration system.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A composite filtration device integrating PP cotton filter element and activated carbon includes a first fixed cylinder, an opening and closing cover is rotatably connected to one side of the first fixed cylinder, and the opening and closing cover and the first fixed cylinder are rotatably connected through a first rotating shaft.

[0009] A filter cylinder is rotatably connected to one side of the first fixed cylinder, located between the opening and closing cover and the first fixed cylinder. The filter cylinder and the first fixed cylinder are rotatably connected through a second rotating shaft. The top and bottom of the filter cylinder are threaded with sealing caps, and the outside of the sealing caps is connected to a medium flow pipe that communicates with the inside of the filter cylinder. The top and bottom of the first fixed cylinder are equipped with lifting and lowering fitting pipes that can be axially displaced to realize the opening and closing of the medium channel.

[0010] When the opening and closing cover rotates, it can drive the lifting and lowering fitting tube to move through the gear transmission structure, so as to release or realize the insertion and engagement between the lifting and lowering fitting tube and the medium flow tube on the filter cylinder.

[0011] The first fixed cylinder is equipped with a fixed tube at both the top and bottom. The gear transmission structure includes a first gear fixed on the first rotating shaft, a second gear meshing with the first gear, and a transmission ring fixedly connected to the second gear and sleeved on the outside of the fixed tube.

[0012] The inner side of the transmission ring is provided with a radial limiting groove, and the outer side of the lifting fitting tube is fixed with a drive slider that is adapted to the radial limiting groove. The drive slider and the radial limiting groove form a radial limiting and axial sliding fit.

[0013] The inner wall of the fixed tube is provided with an inclined spiral guide groove, and the outer wall of the lifting and connecting tube is fixed with a guide head that is slidably connected to the spiral guide groove. The lifting and connecting tube achieves axial displacement when it rotates radially with the transmission ring through the cooperation of the guide head and the spiral guide groove.

[0014] Preferably, the top and bottom of the first fixed cylinder are connected to connecting pipes. The inner end of the connecting pipe is inserted into the lifting and connecting pipe, and the outer end is used to connect with the external conveying pipeline to form a complete medium conveying channel.

[0015] Preferably, guide rods are slidably connected at the four corners of the bottom of the lifting and connecting tube, and slip rings are fixed at the bottom of the four sets of guide rods. The bottom of the slip rings and the inner wall of the first fixed cylinder are radially rotatable and axially limited.

[0016] Each of the four sets of guide rods is equipped with a first spring on its outer side, with the top and bottom of the first spring abutting against the lifting and lowering tube and the slip ring, respectively.

[0017] Preferably, a sealing element is provided at the connection between the medium flow pipe and the lifting coupling pipe on the filter cartridge to prevent medium leakage;

[0018] The sealing element is a rubber ring, which is fixed on the outside of the medium flow pipe. The inner side of the lifting and fitting pipe is provided with a fitting groove for matching the rubber ring.

[0019] Preferably, the outer side of the first fixed cylinder is provided with a protective cover for protecting the gear transmission structure, and the protective cover is connected to the first fixed cylinder by multiple sets of bolt threads;

[0020] A locking mechanism is connected to one side of the opening and closing cover. The locking mechanism includes a connecting plate, two sets of opening and closing sliders, two sets of locking rods, two sets of second fixing cylinders, and two sets of second springs.

[0021] The connecting plate is fixed to one side of the opening and closing cover. Two sets of opening and closing sliders are symmetrically embedded in the grooves opened on the outer surface of the connecting plate. One end of each of the two sets of locking rods is fixedly connected to the two sets of opening and closing sliders, and the other end is set to the second fixed cylinder on the first fixed cylinder of the filter device. Two sets of second springs are respectively sleeved between the two sets of opening and closing sliders.

[0022] Preferably, positioning rings are fixed at the top and bottom of the first fixed cylinder, and the positioning rings are used to limit the axial position of the filter cylinder.

[0023] Preferably, the inner wall of the filter cartridge is provided with a separator for separating the PP cotton filter element and the activated carbon, and the separator is detachably connected to the inner wall of the filter cartridge.

[0024] Preferably, a hexagonal plate is fixed to the outer side of both sets of sealing covers. The hexagonal plate is used for tool clamping to drive the sealing cover to rotate relative to the filter cylinder, thereby realizing the assembly and disassembly of the sealing cover and the filter cylinder.

[0025] This invention proposes an integrated filtration device combining PP cotton filter cartridge and activated carbon. Compared with the prior art, the advantages of this invention are:

[0026] 1. This invention adopts a split-type flip-opening and closing design of "first fixed cylinder - opening and closing cover - filter cylinder" and a lifting and connecting pipe structure driven by gear transmission. When replacing the filter element, it is not necessary to remove the external conveying pipe connected to the connecting pipe at the top and bottom of the first fixed cylinder. Only the opening and closing cover and the filter cylinder need to be flipped, and the filter element can be replaced by removing and installing the sealing cover with the hexagonal plate. This greatly shortens the operation process, reduces the professional skills required of the operators, and reduces maintenance time.

[0027] 2. This invention divides the inner wall of the filter cartridge into two chambers by a detachable partition net, which can be filled with PP cotton filter element and activated carbon respectively to form a composite filtration structure. The PP cotton filter element can physically intercept particulate impurities such as silt and rust, while the activated carbon can adsorb trace pollutants such as residual chlorine and odor. Compared with a single material filter element, it significantly broadens the range of impurity removal and improves the cleanliness of the medium. At the same time, the filling ratio of the two filter materials can be adjusted according to different filtration needs such as drinking water purification and industrial circulating water pretreatment to enhance the device's adaptability to different media and different types of impurities.

[0028] 3. On the one hand, the present invention forms a sealing structure by using the mating groove on the inner side of the lifting mating pipe and the rubber ring on the outer side of the medium flow pipe to ensure the sealing of the joint between the two. On the other hand, it eliminates the need to frequently disassemble the connection between the connecting pipe and the external pipe, fundamentally reducing the probability of pipe interface wear and seal aging, avoiding medium leakage caused by the decline in interface sealing performance, ensuring the integrity of the filter channel, and maintaining the long-term stable operation of the system.

[0029] 4. This invention eliminates the need to disassemble external pipes and connecting pipes, reducing wear and tear on pipe interfaces, seals, and other components, extending the service life of non-consumable components such as the first fixed cylinder and connecting pipes. Furthermore, only the PP cotton filter element and activated carbon inside the filter cylinder need to be replaced, without replacing the entire filter cylinder, thus reducing waste of components such as the filter cylinder. At the same time, it shortens the downtime of the device, reduces losses caused by production or purification process interruptions due to system shutdown, and significantly reduces long-term operation and maintenance costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram showing the overall usage state of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention.

[0031] Figure 2 This is an enlarged cross-sectional view of the integrated PP cotton filter element and activated carbon composite filtration device of the present invention.

[0032] Figure 3 This is a partial structural schematic diagram of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention;

[0033] Figure 4 This is a partial structural schematic diagram of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention;

[0034] Figure 5 This is a cross-sectional enlarged view of the fixing tube of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention;

[0035] Figure 6 This is a cross-sectional enlarged structural diagram of the transmission ring of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention.

[0036] Figure 7 This is a cross-sectional enlarged view of the connecting pipe of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention;

[0037] Figure 8 This is a schematic diagram of the overall open state of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention.

[0038] Figure 9 This is a schematic diagram of the assembly structure of the first fixed cylinder and the opening and closing cover of an integrated PP cotton filter element and activated carbon composite filtration device of the present invention.

[0039] Figure 10 This is a schematic diagram of the assembly structure of the first fixed cylinder and the filter cylinder of an integrated PP cotton filter element and activated carbon composite filtration device of the present invention.

[0040] Figure 11 This is a schematic diagram of the assembly of the locking mechanism of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention.

[0041] Figure 12 This is an enlarged structural schematic diagram of the locking mechanism of an integrated PP cotton filter element and activated carbon composite filtration device according to the present invention.

[0042] In the diagram: 1. First fixed cylinder; 101. Fixed pipe; 102. Spiral guide groove; 2. Opening and closing cover; 201. First rotating shaft; 3. Filter cylinder; 301. Second rotating shaft; 302. Sealing cover; 303. Medium flow pipe; 304. Hexagonal plate; 4. First gear; 5. Second gear; 6. Transmission ring; 7. Radial limiting groove; 8. Lifting mating pipe; 9. Drive slider; 10. Mating groove; 11. First spring; 12. Guide rod; 13. Connecting pipe; 14. Guide head; 15. Positioning ring; 16. Protective cover; 17. Slip ring; 18. Connecting plate; 19. Opening and closing slider; 20. Locking rod; 21. Second fixed cylinder; 22. Second spring; 23. Slide groove. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1

[0045] Please see Figure 1-12 This invention provides a technical solution: an integrated PP cotton filter element and activated carbon composite filtration device, which aims to solve the problems of cumbersome filter element replacement and high leakage risk in existing filtration devices through structural optimization. Its specific structure and working process are as follows:

[0046] The first fixed cylinder 1 serves as the basic support component of the device. Positioning rings 15 are fixed at its top and bottom to limit the axial position of the filter cylinder 3. The top and bottom of the first fixed cylinder 1 are equipped with fixed tubes 101. The inner wall of the fixed tube 101 is provided with an inclined spiral guide groove 102, and a transmission ring 6 is sleeved on the inner side.

[0047] The outer side of the first fixed cylinder 1 is detachably connected to a protective cover 16 by multiple sets of bolts. The protective cover 16 encloses the gear transmission structure consisting of the first gear 4, the second gear 5 and the transmission ring 6, and plays a protective role against dust and impact.

[0048] The top and bottom of the first fixed cylinder 1 are also connected to connecting pipes 13. The inner end of the connecting pipe 13 is inserted into the lifting and matching pipe 8, and the outer end is used to connect with the external conveying pipeline to form a complete medium conveying channel. The outer side of the connecting pipe 13 is fixedly connected to the outer surface of the protective cover 16.

[0049] The opening and closing cover 2 is rotatably connected to the first fixed cylinder 1 via the first rotating shaft 201, and can be flipped relative to the first fixed cylinder 1 to realize the opening and closing of the device; the first rotating shaft 201 is fixedly sleeved with the first gear 4, and the first gear 4 meshes with the second gear 5 to form the power input end of the gear transmission structure.

[0050] The filter cylinder 3 is rotatably connected to the first fixed cylinder 1 via the second rotating shaft 301, and the filter cylinder 3 is located between the opening and closing cover 2 and the first fixed cylinder 1; the top and bottom of the filter cylinder 3 are threaded with sealing covers 302, and a medium flow pipe 303 communicating with the inside of the filter cylinder 3 is fixed on the outside of the sealing cover 302. Hexagonal plates 304 are also fixed on the outside of both sets of sealing covers 302, for wrenches and other tools to clamp and drive the sealing cover 302 to rotate relative to the filter cylinder 3, so as to realize the disassembly and assembly of the sealing cover 302 and the filter cylinder 3.

[0051] The inner wall of the filter cartridge 3 is detachably connected to a partition screen, which divides the interior of the filter cartridge 3 into upper and lower chambers, which are respectively filled with PP cotton filter element and activated carbon to form a composite filtration structure.

[0052] The lifting and lowering fitting tube 8 is assembled inside the fixed tube 101 and can be displaced along the axial direction of the fixed tube 101 to realize the opening and closing of the medium channel; a driving slider 9 is fixed on the outside of the lifting and lowering fitting tube 8, and the driving slider 9 is inserted into the radial limiting groove 7 opened on the inner side of the transmission ring 6, and the driving slider 9 and the radial limiting groove 7 form a radial limiting and axial sliding fit.

[0053] A guide head 14 is fixed on the outer wall of the lifting and connecting pipe 8, and the guide head 14 is slidably connected to the spiral guide groove 102 on the inner wall of the fixed pipe 101.

[0054] A mating groove 10 is provided on the inner side of the lifting mating pipe 8, and a rubber ring is fixed on the outer side of the medium flow pipe 303. The rubber ring is adapted to the mating groove 10 to form a sealing structure at the insertion point of the lifting mating pipe 8 and the medium flow pipe 303 to prevent medium leakage.

[0055] Guide rods 12 are slidably connected at the four corners of the bottom of the lifting and connecting tube 8. A slip ring 17 is fixed at the bottom of the four sets of guide rods 12. The slip ring 17 is radially rotated and axially limited to the inner wall of the first fixed cylinder 1. A first spring 11 is sleeved on the outside of the four sets of guide rods 12. The top of the first spring 11 abuts against the lifting and connecting tube 8 and the bottom abuts against the slip ring 17 to assist the lifting and connecting tube 8 in resetting.

[0056] The gear transmission structure consists of a first gear 4 fixed to the first rotating shaft 201, a second gear 5 meshing with the first gear 4, and a transmission ring 6 fixedly connected to the second gear 5. It is used to transmit the flipping power of the opening and closing cover 2 to the lifting and connecting tube 8 and drive the lifting and connecting tube 8 to move axially.

[0057] Example 2

[0058] This embodiment uses a composite PP cotton filter and activated carbon integrated filtration device used in a residential drinking water purification system as an example. A single unit of this device needs to process approximately 50 m³ of domestic water per day. To ensure filtration efficiency, the opening and closing cover 2 needs to be opened and closed monthly to replace the PP cotton filter and activated carbon in the internal filter cartridge 3. The core components of the device's opening and closing cover locking mechanism include two sets of opening and closing sliders 19, two sets of locking rods 20, two sets of second springs 22, and two sets of second fixing cylinders 21, wherein:

[0059] The connecting plate 18 is fixed on one side of the opening and closing cover 2, and two sets of opening and closing sliders 19 are symmetrically embedded in the grooves 23 on the outer surface of the connecting plate 18. The top of the opening and closing sliders 19 is provided with anti-slip ridges to facilitate the application of force by the operator's hand.

[0060] One end of each of the two sets of locking rods 20 is fixedly connected to the opening and closing slider 19, and the other end is normally inserted into the second fixed cylinder 21 at the corresponding position of the first fixed cylinder 1, so as to lock the opening and closing cover 2 with the first fixed cylinder 1.

[0061] Two sets of second springs 22 are respectively sleeved between two sets of opening and closing sliders 19. Under normal conditions, the second springs 22 are in a naturally extended state, and the locking rod 20 is pushed by the elastic force to maintain the engagement with the second fixed cylinder 21.

[0062] Specific operational steps

[0063] When staff need to open the opening / closing cover 2 to replace the filter element, the entire process can be completed independently by only one operator, without the need to carry auxiliary tools such as wrenches and screwdrivers. The specific steps are as follows:

[0064] Step 1: Open and close slider 19 and apply force.

[0065] The operator stands in front of the filter device and holds the two sets of opening and closing sliders 19 on the outer surface of the opening and closing cover 2 with both hands (the anti-slip texture increases the friction between the hand and the slider to prevent slippage when applying force). According to the "unlocking direction" marking on the surface of the device (the opening and closing slider 19 is marked with an inward pressing arrow), the operator applies pressure to the center of the opening and closing cover 2 at the same time. At this time, the pressing force applied by the operator is about 30-40N, which can push the slider with only normal hand strength, without the need for additional external tools.

[0066] Step 2: Drive the locking lever 20 to achieve the retraction movement.

[0067] As the two sets of opening and closing sliders 19 move toward the center, the two sets of locking rods 20, which are fixedly connected to the opening and closing sliders 19, are pulled synchronously and retract vertically toward the opening and closing cover 2. Since the locking rods 20 are fixedly connected to the opening and closing sliders 19, the movement trajectory of the opening and closing sliders 19 can be accurately transmitted to the locking rods 20, ensuring that the two sets of locking rods 20 always maintain symmetrical retraction and avoiding the locking rods 20 from getting stuck in the second fixed cylinder 21 due to unilateral movement.

[0068] Working principle: When in use, firstly, the opening and closing cover 2 is flipped open to one side relative to the first fixed cylinder 1 via the first rotating shaft 201. After the opening and closing cover 2 is opened, the filter cylinder 3 is manually flipped open to the other side relative to the first fixed cylinder 1 via the second rotating shaft 301. Then, the operator can open the sealing cover 302 that is threaded to the top and bottom of the filter cylinder 3, and then the filter material inside the filter cylinder 3 can be replaced.

[0069] Specifically, when the sealing cover 302 is opened or closed, the operator can use a wrench or other tools to separate and connect the sealing cover 302 and the filter cartridge 3 using the hexagonal plate 304;

[0070] The filter cartridge 3 can be filled with filter materials such as PP cotton core and activated carbon. The PP cotton core and activated carbon can be filled in layers to further improve the filtration effect of the media.

[0071] As can be seen from the above, breaking away from the traditional integrated or tightly assembled structure of filter cartridges with inlet and outlet ends, the innovative design adopts a split flip-opening design of "first fixed cylinder 1 - opening and closing cover 2 - filter cartridge 3". The first fixed cylinder 1 serves as the basic supporting component of the device. It is connected to the opening and closing cover 2 through the first rotating shaft 201 and to the filter cartridge 3 through the second rotating shaft 301. There is no need to disassemble the external connecting pipes. Simply flip the opening and closing cover 2 and the filter cartridge 3 in sequence to directly expose the internal space of the filter cartridge 3.

[0072] The filter cartridge 3 supports layered filling of PP cotton filter element and activated carbon. The two filter materials form a composite filter structure with complementary functions: PP cotton can filter particulate impurities such as mud, rust and suspended solids in the filter medium through physical interception; while activated carbon can adsorb trace pollutants such as residual chlorine, odor and organic matter in the water with its porous adsorption characteristics. Compared with single material filter element, it significantly broadens the range of impurity removal and improves the cleanliness of the medium.

[0073] The layered filling design provides flexible adjustment space, allowing the filling ratio or number of layers of PP cotton and activated carbon to be adjusted according to the filtration needs of different application scenarios (such as drinking water purification, industrial circulating water pretreatment, etc.), enhancing the device's adaptability to different media and different types of impurities, without the need to replace the entire set of filter components.

[0074] It eliminates the need for frequent disassembly of the inlet and outlet connections to external pipes, fundamentally reducing the probability of pipe interface wear, avoiding media leakage caused by decreased interface sealing performance, ensuring the sealing and integrity of the filter channel, and maintaining stable system operation.

[0075] The simplified replacement process reduces the professional skill requirements of operators, reduces the risk of equipment failure due to improper operation, and shortens the working time of a single replacement operation, reduces the downtime of the filter unit, and reduces the loss of production or purification process interruption caused by system shutdown.

[0076] Furthermore, when the opening and closing cover 2 is opened by the first rotating shaft 201, the rotation of the first rotating shaft 201 drives the first gear 4 to rotate, the rotation of the first gear 4 drives the second gear 5 to rotate, and the rotation of the second gear 5 drives the transmission ring 6 to rotate.

[0077] When the transmission ring 6 rotates, the multiple sets of radial limiting grooves 7 opened on its inner side will drive the drive slider 9 and the lifting mating tube 8 to rotate. The radial limiting grooves 7 and the drive slider 9 are connected by radial limiting and axial sliding.

[0078] When the lifting and lowering pipe 8 rotates radially, a guide head 14 is fixed on one side of the outer wall of the lifting and lowering pipe 8. The guide head 14 and the spiral guide groove 102 opened on the inner wall of the fixed pipe 101 are slidably connected, and the spiral guide groove 102 is inclined. That is to say, at this time, the lifting and lowering pipe 8 will also undergo a certain degree of axial displacement under the action of the guide head 14 during the radial rotation.

[0079] As can be seen from the above, when the opening and closing cover 2 is flipped open, the two sets of lifting and connecting pipes 8 will be axially displaced away from the medium flow pipe 303. That is to say, at this time, the connection between the filter cylinder 3 and the first fixed cylinder 1 is released, and the filter cylinder 3 can be flipped open along the second rotating shaft 301.

[0080] After the filter material is replaced, the filter cylinder 3 is first rotated to the inside of the first fixed cylinder 1, and then the opening and closing cover 2 is flipped and closed. At the same time, the two sets of lifting and connecting pipes 8 can move axially in opposite directions, so that the two sets of lifting and connecting pipes 8 and the medium flow pipe 303 of the filter cylinder 3 are connected to each other, and the connection operation of the filter channel is completed.

[0081] The first fixed cylinder 1 is connected to the top and bottom of the connecting pipe 13. The inner end of the connecting pipe 13 is inserted into the lifting and matching pipe 8, and the other end is connected to the external pipe. Thus, the external medium can enter the filter cylinder 3 and the filtered medium can be discharged from the other set of connecting pipes 13 to complete the filtration effect.

[0082] Furthermore, the operator can use the two sets of opening and closing sliders 19 to drive the two sets of locking rods 20 to retract, which will compress the two sets of second springs 22, thereby causing the two sets of locking rods 20 to disengage from the two sets of second fixed cylinders 21, thus separating the opening and closing cover 2 from the first fixed cylinder 1.

[0083] The entire operation is completed through a series of mechanical actions: "controlling the opening and closing slider 19 - driving the locking rod 20 - compressing the second spring 22 - releasing the lock". No complicated auxiliary tools or multi-step coordinated operation are required. The operator only needs to apply force to the opening and closing slider 19. The operation process is simple and can effectively shorten the separation time of the opening and closing cover 2 and improve the operating efficiency of the equipment.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite filtration device integrating PP cotton filter element and activated carbon, comprising a first fixed cylinder (1), characterized in that: The first fixed cylinder (1) is rotatably connected to an opening and closing cover (2) on one side, and the opening and closing cover (2) and the first fixed cylinder (1) are rotatably connected through a first rotating shaft (201); The first fixed cylinder (1) is rotatably connected to a filter cylinder (3) located between the opening and closing cover (2) and the first fixed cylinder (1), and the filter cylinder (3) and the first fixed cylinder (1) are rotatably connected through a second rotating shaft (301). The top and bottom of the filter cylinder (3) are threaded with a sealing cover (302), and the outside of the sealing cover (302) is connected to a medium flow pipe (303) that communicates with the inside of the filter cylinder (3). The top and bottom of the first fixed cylinder (1) are equipped with lifting and lowering fitting pipes (8) that can be axially displaced to realize the opening and closing of the medium channel. When the opening and closing cover (2) rotates, it can drive the lifting and lowering fitting pipe (8) to move through the gear transmission structure, so as to release or realize the insertion and engagement between the lifting and lowering fitting pipe (8) and the medium flow pipe (303) on the filter cylinder (3); The first fixed cylinder (1) is equipped with a fixed tube (101) at both the top and bottom ends. The gear transmission structure includes a first gear (4) fixed on the first rotating shaft (201), a second gear (5) meshing with the first gear (4), and a transmission ring (6) fixedly connected to the second gear (5) and sleeved on the outside of the fixed tube (101). The transmission ring (6) has a radial limiting groove (7) on its inner side, and the lifting fitting tube (8) has a drive slider (9) that is adapted to the radial limiting groove (7) fixed on its outer side. The drive slider (9) and the radial limiting groove (7) form a radial limiting and axial sliding fit. The inner wall of the fixed tube (101) is provided with an inclined spiral guide groove (102), and the outer wall of the lifting and connecting tube (8) is fixed with a guide head (14) that is slidably connected to the spiral guide groove (102). The lifting and connecting tube (8) achieves axial displacement when it rotates radially with the transmission ring (6) through the cooperation of the guide head (14) and the spiral guide groove (102).

2. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The top and bottom of the first fixed cylinder (1) are connected to a connecting pipe (13). The inner end of the connecting pipe (13) is inserted into the lifting and connecting pipe (8), and the outer end is used to connect with the external conveying pipeline to form a complete medium conveying channel.

3. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The lifting and lowering tube (8) is slidably connected to the four corners of the bottom with guide rods (12), and the bottom of the four sets of guide rods (12) is fixed with slip rings (17). The bottom of the slip rings (17) and the inner wall of the first fixed cylinder (1) are radially rotating and axially limited. The four sets of guide rods (12) are each provided with a first spring (11) on the outside. The top and bottom of the first spring (11) abut against the lifting and lowering tube (8) and the slip ring (17) respectively.

4. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The connection between the medium flow pipe (303) on the filter cylinder (3) and the lifting fitting pipe (8) is provided with a sealing element to prevent medium leakage; The sealing element is a rubber ring, which is fixed on the outside of the medium flow pipe (303). The inner side of the lifting fitting pipe (8) is provided with a fitting groove (10) for matching the rubber ring.

5. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The first fixed cylinder (1) is provided with a protective cover (16) for protecting the gear transmission structure. The protective cover (16) and the first fixed cylinder (1) are connected by multiple sets of bolt threads. The opening and closing cover (2) is connected to a locking mechanism on one side. The locking mechanism includes a connecting plate (18), two sets of opening and closing sliders (19), two sets of locking rods (20), two sets of second fixing cylinders (21) and two sets of second springs (22). The connecting plate (18) is fixed to one side of the opening and closing cover (2). Two sets of opening and closing sliders (19) are symmetrically embedded in the grooves (23) opened on the outer surface of the connecting plate (18). One end of each of the two sets of locking rods (20) is fixedly connected to the two sets of opening and closing sliders (19), and the other end is set to the second fixed cylinder (21) on the first fixed cylinder (1) of the filter device. Two sets of second springs (22) are respectively sleeved between the two sets of opening and closing sliders (19).

6. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The top and bottom ends of the first fixed cylinder (1) are fixed with positioning rings (15), and the positioning rings (15) are used to limit the axial position of the filter cylinder (3).

7. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: The inner wall of the filter cylinder (3) is provided with a separator for separating the PP cotton filter element and the activated carbon, and the separator is detachably connected to the inner wall of the filter cylinder (3).

8. The integrated PP cotton filter element and activated carbon composite filtration device according to claim 1, characterized in that: Both sets of sealing caps (302) are fixed with hexagonal plates (304) on the outside. The hexagonal plates (304) are used for tools to clamp and drive the sealing caps (302) to rotate relative to the filter cylinder (3), so as to realize the assembly and disassembly of the sealing caps (302) and the filter cylinder (3).

Images