Hot cell filter seal ring replacement apparatus, method, and hot cell filtration system

Abstract

The application discloses a filter sealing ring replacement device in a hot chamber, which comprises a telescopic sleeve and a fixed sleeve. The fixed sleeve is coaxially sleeved outside the telescopic sleeve. The end of the telescopic sleeve can be extended out of the opening of the fixed sleeve, and the outer diameter of the extended end is not less than the diameter of a sealing ring support ring. The sealing ring to be replaced is sleeved on the extended end. The inner diameter of the opening of the fixed sleeve is consistent with the outer diameter of the extended end of the telescopic sleeve. When the extended end is aligned with and abuts against the sealing ring support ring, an axial driving force is applied to the fixed sleeve, so that the fixed sleeve moves axially relative to the telescopic sleeve, and the sealing ring is pushed from the extended end of the telescopic sleeve to the sealing ring support ring through the edge of the opening. The filter sealing ring replacement device in the hot chamber reduces the difficulty of replacement operation and the requirement of operation precision, improves the replacement efficiency, and is not easy to damage the sealing ring. The application also provides a filter sealing ring replacement method in a hot chamber and a filter system in a hot chamber.

Description

Technical Field

[0001] This invention specifically relates to a device, method, and filtration system for replacing the sealing ring of a filter inside a heated chamber. Background Technology

[0002] The nuclear industry requires the storage, shearing, dissolution, and chemical separation of spent fuel discharged from nuclear power plants to separate uranium, plutonium, and fission products, as well as purify and recover uranium and plutonium. It also necessitates the proper handling and safe disposal of radioactive waste generated during this process. Key equipment used in this process, such as filters, needs to be housed in sealed, biologically shielded hot chambers or enclosures. The filter's function is to draw precipitates from the solution into a container, then remove the liquid through a filter tube, leaving the precipitates inside. During operation, the container is under positive pressure; therefore, a sealing ring is required to ensure a tight seal between the filter and the container, preventing solution from leaking out from the contact surface.

[0003] Because of its radioactivity, the maintenance and replacement of vulnerable parts require remote operation methods, such as robotic arms or automated transfer equipment within the enclosure. However, the small space inside the shielded enclosure, with its densely packed various devices, makes maintenance work on smaller parts like the filter equipment that require frequent replacement of sealing rings extremely difficult. Using robotic arms would require extremely high precision and could potentially damage the sealing rings. Summary of the Invention

[0004] The technical problem to be solved by this invention is to address the aforementioned shortcomings in the prior art by providing a device for replacing the sealing ring of a filter inside a heated chamber. This device reduces the difficulty and precision requirements of the replacement operation, improves the replacement efficiency, and is less likely to damage the sealing ring. This invention also provides a method for replacing the sealing ring of a filter inside a heated chamber and a heated chamber filtration system.

[0005] This invention provides a device for replacing the sealing ring of a filter inside a hot chamber, comprising a telescopic sleeve and a fixed sleeve. The fixed sleeve is coaxially sleeved on the outside of the telescopic sleeve. The end of the telescopic sleeve can extend out from the opening of the fixed sleeve, and its extended end can abut against the sealing ring support ring of the filter inside the hot chamber. The outer diameter of the extended end is not less than the diameter of the sealing ring support ring. The sealing ring to be replaced is sleeved on the extended end. The inner diameter of the opening of the fixed sleeve is consistent with the outer diameter of the extended end of the telescopic sleeve. When the extended end is aligned and abuts against the sealing ring support ring, an axial driving force is applied to the fixed sleeve, thereby causing the fixed sleeve to move axially relative to the telescopic sleeve, so as to push the sealing ring from the extended end of the telescopic sleeve to the sealing ring support ring through the edge of the opening.

[0006] Preferably, the sealing ring support ring is provided with an installation groove, and the outer diameter of the extended end of the telescopic sleeve is consistent with the diameter of the sealing ring support ring, so that the fixed sleeve can push the sealing ring into the installation groove of the sealing ring support ring through the opening edge.

[0007] Preferably, the replacement device further includes an elastic element. The telescopic sleeve includes a cylindrical body with a stepped shaft structure. The extended end of the cylindrical body is a large-diameter end, and the other end is a small-diameter end. The fixed sleeve has an opening at its head end and a through hole at its tail end. The inner diameter of the opening is larger than that of the through hole. The through hole allows the small-diameter end to pass through. The diameter of the through hole is smaller than the end face diameter of the fixed sleeve, thereby forming a support platform at the tail end face of the fixed sleeve. The elastic element is wound around the outside of the telescopic sleeve, with one end supporting the stepped surface of the telescopic sleeve and the other end supporting the support platform.

[0008] Preferably, the telescopic sleeve further includes a base plate, with the small-diameter end of the cylinder passing through the through hole of the fixed sleeve and connecting to the base plate. The diameter of the base plate is larger than the inner diameter of the through hole to limit the telescopic sleeve.

[0009] Preferably, the replacement device further includes a base, which serves as a clamping part in the hot chamber filter seal replacement device for transporting the filter seal inside and outside the hot chamber via a clamping device, and the fixing sleeve is mounted on the base.

[0010] Preferably, the base is a hollow structure with a mounting platform protruding from the inner wall, and the fixing sleeve has a stepped shaft structure, with the stepped surface of the fixing sleeve fitting and connected to the mounting platform.

[0011] Preferably, a limiting strip is provided on the outer surface of the base to limit the clamping device.

[0012] Preferably, the replacement device further includes a drive assembly, which includes a lifting platform and a drive component. The lifting platform is parallel to the bottom surface of the filter inside the hot chamber and is located below the sealing ring support ring. The base is placed on the lifting platform. The drive component is connected between the lifting platform and the bottom surface of the filter inside the hot chamber and is used to drive the lifting platform to move up and down, thereby providing axial driving force for the fixed sleeve on the base.

[0013] This invention also provides a method for replacing the sealing ring of a filter inside a heated chamber, comprising the following steps:

[0014] Remove the container from the sealing ring support ring;

[0015] Remove the old sealing ring from the sealing ring support ring;

[0016] The new sealing ring is installed onto the sealing ring support ring using the above-described hot chamber filter sealing ring replacement device;

[0017] Reconnect the container to the sealing ring support ring.

[0018] The present invention also provides a hot chamber filter system, including a filter substrate, a container, a sealing ring, and the aforementioned hot chamber filter sealing ring replacement device. The filter substrate has a sealing ring support ring at its bottom. The outer surface of the sealing ring support ring has a recessed mounting groove at its edge that contacts the bottom surface of the filter substrate. The container is fitted over the sealing ring support ring, and its inner surface has a slot at its edge facing the bottom surface of the filter substrate. The sealing ring is disposed in the area enclosed by the mounting groove and the slot. The hot chamber filter sealing ring replacement device is used to install the sealing ring onto the sealing ring support ring.

[0019] Preferably, the container includes a connecting part, a filter cup, and a filter tube. The connecting part is sleeved outside the sealing ring support ring and is used to connect the sealing ring support ring and the filter cup. A slot is provided on the connecting part. The filter cup is used to hold the material to be filtered. The filter tube connects the filter cup and the interface at the bottom of the filter body so that the filter body can draw liquid from the material to be filtered in the filter cup through the filter tube.

[0020] Preferably, the filtration system further includes a scraper device, which includes a ring plate and scrapers. The ring plate is disposed around the periphery of the filter tube and has a through hole in the center that allows the filter tube to pass through. Multiple scrapers are provided, each arranged around the center of the ring plate and movably arranged along the radial direction of the ring plate, so as to contact the filter tube radially to scrape off the solids adhering to the filter tube.

[0021] Preferably, the scraper device further includes mounting blocks, and multiple mounting blocks are provided, each arranged around the center of the ring plate. A blade slide rail is provided on a vertical plane arranged radially along the ring plate in the mounting block. The blade slide rail has a strip-shaped groove structure, and one end facing the center of the ring plate is lower than the other end. The scraper is provided with a connecting shaft, and the scraper slides in the blade slide rail through the connecting shaft, so that it automatically slides along the blade slide rail towards the center of the ring plate under the action of gravity.

[0022] The sealing ring replacement device for the hot chamber filter of the present invention has a telescopic sleeve that can move axially relative to the opening of the fixed sleeve. During sealing ring replacement, the telescopic sleeve abuts against the sealing ring support ring, and the fixed sleeve moves relative to the telescopic sleeve under axial driving force. Since the opening diameter of the fixed sleeve matches the outer diameter of the telescopic sleeve, the sealing ring outside the telescopic sleeve can be pushed onto the sealing ring support ring through the edge of the opening, thereby completing the sealing ring installation.

[0023] During the replacement process using the replacement device of the present invention, only axial driving force needs to be applied to the fixed sleeve to complete the installation of the sealing ring. Therefore, compared with the use of large operating equipment such as master and slave manipulators in the hot chamber for remote installation steps such as opening, docking, and loosening, its operation method is obviously simpler, the operation accuracy requirement is not high, and the energy consumption is also lower.

[0024] Because the new sealing ring is only subjected to pushing force during installation, it is almost undamaged, has a longer service life, and requires less frequent replacement, further avoiding any impact on production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal structure of the filter sealing ring replacement device in the hot chamber of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the layout of the heat chamber filter sealing ring replacement device before replacement in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the layout during the replacement of the filter sealing ring in the hot chamber in Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the layout of the heat chamber filter sealing ring replacement device after replacement in Embodiment 1 of the present invention;

[0029] Figure 5 This is a schematic diagram showing the position of the sealing ring of the filter inside the hot chamber in Embodiment 3 of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the container for the thermal chamber filtration system in Embodiment 3 of the present invention;

[0031] Figure 7 This is another structural schematic diagram of the container of the hot chamber filtration system in Embodiment 3 of the present invention;

[0032] Figure 8 This is a schematic diagram of the scraper device of the hot chamber filtration system in Embodiment 3 of the present invention;

[0033] Figure 9 This is a schematic diagram of the annular plate of the thermal chamber filtration system in Embodiment 3 of the present invention;

[0034] Figure 10 This is a schematic diagram of the installation block of the thermal chamber filtration system in Embodiment 3 of the present invention;

[0035] Figure 11 This is a schematic diagram of the scraper structure of the heat chamber filtration system in Embodiment 3 of the present invention;

[0036] Figure 12 This is a schematic diagram of the connecting shaft of the thermal chamber filtration system in Embodiment 3 of the present invention.

[0037] In the diagram: 1. Telescopic sleeve; 11. Extended end; 111. Limiting groove; 12. Base plate; 13. Fastening screw; 2. Fixed sleeve; 21. Opening; 22. Support platform; 3. Elastic element; 4. Sealing ring support ring; 41. Mounting groove; 42. Limiting ring; 5. Sealing ring; 6. Base; 61. Mounting platform; 62. Limiting strip; 7. Drive assembly; 71. Lifting platform; 72. Drive component; 8. Container; 81. Slot; 82. Connecting part; 83. Filter cup; 84. Filter tube; 85. Scraper device; 851. Ring plate; 852. Scraper; 8521. Connecting shaft; 853. Mounting block; 8531. Blade slide rail; 854. Torsion spring; 9. Filter base; 91. Interface. Detailed Implementation

[0038] The technical solutions of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of the invention.

[0039] In the description of this invention, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] In the description of this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Example 1

[0043] like Figures 1 to 4As shown, the sealing ring replacement device for the hot chamber filter in this embodiment includes a telescopic sleeve 1 and a fixed sleeve 2. The fixed sleeve 2 is coaxially sleeved on the outside of the telescopic sleeve 1. The end of the telescopic sleeve 1 can extend out from the opening 21 of the fixed sleeve 2. Its extended end 11 can abut against the sealing ring support ring 4 of the hot chamber filter, and the outer diameter of the extended end 11 is not less than the diameter of the sealing ring support ring 4. The sealing ring 5 to be replaced is sleeved on the extended end 11. The inner diameter of the opening 21 of the fixed sleeve 2 is consistent with the outer diameter of the extended end 11 of the telescopic sleeve 1. When the extended end 11 is aligned and abuts against the sealing ring support ring 4, an axial driving force is applied to the fixed sleeve 2, thereby causing the fixed sleeve 2 to move axially relative to the telescopic sleeve 1, so as to push the sealing ring 5 from the extended end 11 of the telescopic sleeve 1 onto the sealing ring support ring 4 through the edge of the opening 21.

[0044] In this embodiment, the telescopic sleeve 1 can move axially relative to the fixed sleeve 2 at the opening 21. When replacing the sealing ring 5, the telescopic sleeve 1 abuts against the sealing ring support ring 4, and the fixed sleeve 2 moves relative to the telescopic sleeve 1 under the action of axial driving force. Since the diameter of the opening 21 of the fixed sleeve 2 is adapted to the outer diameter of the telescopic sleeve 1, the sealing ring 5 outside the telescopic sleeve 1 can be pushed to the sealing ring support ring 4 through the edge of the opening 21, thereby completing the installation of the sealing ring 5.

[0045] During the replacement process using this replacement device, only axial driving force needs to be applied to the fixed sleeve 2 to complete the installation of the sealing ring 5. Therefore, compared with the use of large operating equipment such as master and slave manipulators in the hot chamber for remote installation steps such as opening, docking, and loosening, the operation method is obviously simpler. The object of operation changes from a small individual such as the sealing ring 5 to a large individual such as the entire replacement device. Therefore, the operation accuracy requirement is not high, and the energy consumption is also lower.

[0046] Because the new sealing ring 5 is only subjected to pushing force during installation, it is almost undamaged, has a longer service life, and requires less frequent replacement, thus further avoiding any impact on production efficiency.

[0047] In this embodiment, the sealing ring support ring 4 is provided with an installation groove 41. The installation groove 41 is located at a set position on the sealing ring support ring 4 (the connection position with the filter base 9). Therefore, the work of installing the sealing ring 5 is no longer simply putting the sealing ring 5 on the sealing ring support ring 4, but also pushing it to the set position where the installation groove 41 is located. Therefore, the outer diameter of the protruding end 11 of the telescopic sleeve 1 is the same as the diameter of the sealing ring support ring 4, that is, the inner diameter of the opening 21 of the fixed sleeve 2 is the same as the diameter of the sealing ring support ring 4. This allows the edge of the opening 21 of the fixed sleeve 2 to fit tightly against the sealing ring support ring 4, and the sealing ring 5 can be pushed into the installation groove 41 of the sealing ring support ring 4 through the edge of the opening 21.

[0048] In this embodiment, a limiting groove 111 is also provided on the protruding end 11, and the new sealing ring 5 to be replaced is placed in the limiting groove 111, thereby avoiding back-and-forth movement that could cause it to detach.

[0049] In this embodiment, the replacement device also includes an elastic element 3. The telescopic sleeve 1 includes a cylindrical body with a stepped shaft structure or an inverted convex structure. The protruding end 11 of the cylindrical body is a large-diameter end, and the other end is a small-diameter end. One end of the fixed sleeve 2 is provided with an opening 21, and the other end is provided with a through hole. The inner diameter of the opening 21 is larger than that of the through hole, and the through hole allows the small-diameter end to pass through, so that the telescopic sleeve 1 can retract relative to the fixed sleeve 2, and avoids restricting the forward movement of the fixed sleeve 2 during the relative movement.

[0050] The diameter of the through hole is smaller than the end face diameter of the fixed sleeve 2, thus forming a support platform 22 on the tail end face of the fixed sleeve 2. The elastic element 3 is wrapped around the outside of the telescopic sleeve 1, with one end supporting the stepped surface of the telescopic sleeve 1 and the other end supporting the support platform 22. Specifically, the elastic element 3 is a spring, located in the annular gap between the telescopic sleeve 1 and the fixed sleeve 2. This circumferential surrounding structure not only guides the movement of the fixed sleeve 2, but also provides a more uniform and stable elastic support force.

[0051] In this embodiment, the telescopic sleeve 1 also includes a base plate 12. The small-diameter end of the sleeve passes through the through hole of the fixed sleeve 2 and connects to the base plate 12. The diameter of the base plate 12 is larger than the inner diameter of the through hole to limit the telescopic sleeve 1 and prevent the telescopic sleeve 1 from directly separating from the fixed sleeve 2 through the opening 21.

[0052] In this embodiment, the replacement device also includes a base 6, which serves as the clamping part for transporting the filter sealing ring replacement device inside and outside the hot chamber via a clamping device. The fixing sleeve 2 is mounted on the base 6. During the replacement process, personnel can place the sealing ring onto the protruding end 11 from outside the hot chamber, then transport the replacement device into the hot chamber. A robotic arm or other clamping device then clamps the base 6 and moves the replacement device to the filter device whose sealing ring needs to be replaced. In this configuration, the base 6 effectively expands the clamping volume of the clamping device, making the clamping and moving process more stable and reliable.

[0053] In this embodiment, the base 6 is a hollow structure, and a mounting platform 61 protrudes from its inner wall. The fixing sleeve 2 has a stepped shaft-like structure or an inverted convex structure, and the stepped surface of the fixing sleeve 2 is in close contact with the mounting platform 61. The mounting platform 61 can limit the movement of the fixing sleeve 2, avoiding installation failure caused by the fixing sleeve 2 retracting during the installation of the sealing ring 5.

[0054] In this embodiment, a limiting strip 62 protrudes from the outer surface of the base 6 to limit the clamping device. The protruding structure can better restrict the clamping device such as the robotic gripper, avoid axial movement that could cause it to detach, and also make it easier for the robotic gripper to determine the gripping position, further improving the clamping stability.

[0055] In this embodiment, the replacement device further includes a drive assembly 7, which includes a lifting platform 71 and a drive component 72. The lifting platform 71 is parallel to the bottom surface of the filter inside the hot chamber and is located below the sealing ring support ring 4. The base 6 is placed on the lifting platform 71. The drive component 72 is connected between the lifting platform 71 and the bottom surface of the filter inside the hot chamber, and is used to drive the lifting platform 71 to move up and down, thereby providing axial driving force for the fixing sleeve 2 on the base 6. In this embodiment, the drive component 72 can be a conventional linear drive component such as an electric push rod or a hydraulic cylinder.

[0056] During installation, the lifting platform 71 is first raised. As the top of the telescopic sleeve 1 contacts the bottom of the sealing ring support ring 4 and continues to rise, the spring is compressed and begins to deform elastically. At this time, the base 6 and the fixed sleeve 2 continue to rise, pushing the sealing ring 5 out of the telescopic sleeve 1 and holding it against the outside of the sealing ring support ring 4. As the lifting platform 71 continues to rise until it just pushes the sealing ring 5 into the mounting groove 41 on the sealing ring support ring 4, the sealing ring 5 is installed in place, and the operation stops.

[0057] As the lifting platform 71 descends, the spring begins to rebound. After reaching the initial position, the lifting platform 71 and its associated device can be withdrawn from the working position, completing the installation. All equipment replacements are performed inside the heated chamber using a remote operation method.

[0058] Combining the above structures, the specific process of installing the new sealing ring 5 onto the sealing ring support ring 4 using this replacement device is as follows: The base 6 is placed on the lifting platform 71 and moves up and down during sealing ring 5 replacement. The fixed sleeve 2 is installed on the base 6, the telescopic sleeve 1 is placed inside the fixed sleeve 2, and the elastic element 3 is placed between the fixed sleeve 2 and the telescopic sleeve 1. Spring compression and rebound drive the telescopic sleeve 1 to move. The base plate 12 is installed at the bottom of the telescopic sleeve 1 via fastening screws 13 to limit the position of the telescopic sleeve 1 in its natural state. The sealing ring support ring 4 is installed on the filter base 9. During replacement, the sealing ring 5 is pushed out from the edge of the opening 21 on the telescopic sleeve 1 and then installed on the sealing ring support ring 4. The filter is arranged inside a hot chamber with sealing and shielding functions and is used in the nuclear chemical spent fuel reprocessing process to extract key substances. This embodiment achieves remote and automatic replacement of the filter sealing ring 5, extends the service life of the sealing ring 5, and solves the problem of difficult sealing ring 5 replacement.

[0059] The device in this embodiment achieves automatic replacement of the sealing ring, simplifying the process. The entire process involves only the raising and lowering of the equipment, making it highly operable and reliable. The sealing ring is not easily damaged; it will not wear down or be damaged by external forces during replacement and use, extending its service life. It enables long-distance replacement within the hot chamber, reducing the difficulty of replacement and the impact of human error.

[0060] Example 2

[0061] The method for replacing the sealing ring of the heat exchanger filter in this embodiment includes the following steps:

[0062] Remove the container 8 from the sealing ring support ring 4;

[0063] Remove the old sealing ring 5 from the sealing ring support ring 4;

[0064] The new sealing ring 5 is installed onto the sealing ring support ring 4 using the hot chamber filter sealing ring replacement device in Example 1;

[0065] Reconnect the container 8 to the sealing ring support ring 4.

[0066] Example 3

[0067] The hot chamber filtration system of this embodiment includes a filter substrate 9, a container 8, a sealing ring 5, and the hot chamber filter sealing ring replacement device in Embodiment 1. The bottom of the filter substrate 9 is provided with a sealing ring support ring 4. The outer surface of the sealing ring support ring 4 has a recessed mounting groove 41 at the edge contacting the bottom surface of the filter substrate 9. The container 8 is fitted over the sealing ring support ring 4, and its inner surface has a slot 81 at the edge facing the bottom surface of the filter substrate 9. Figure 5 As shown, the sealing ring 5 is disposed in the area enclosed by the mounting groove 41 and the slot 81. The sealing ring replacement device for the hot chamber filter is used to install the sealing ring 5 on the sealing ring support ring 4.

[0068] In this embodiment, the sealing ring 5 is made of perfluoroether (FFKM), which has excellent chemical resistance. A limiting ring 42 is provided on the inner bottom wall of the sealing ring support ring 4. The limiting ring 42 is coaxially arranged with the sealing ring support ring 4 and is divided into three discontinuous arc-shaped strips by three notches. The notches are spaced 120° apart, meaning they are evenly distributed relative to the center of the limiting ring 42. Three limiting platforms are provided at the bottom of the filter base 9 corresponding to the three notches of the limiting ring 42. When the filter base 9 and the sealing ring support ring 4 are connected, the three limiting platforms are first aligned with the three notches, then axially moved to bring them to the same axial position, and then rotated to screw the limiting platforms into the limiting ring 42 to complete the connection. Vertical cylindrical pins can also be provided on the limiting platforms to prevent the sealing ring support ring 4 from excessively rotating and falling off.

[0069] In this embodiment, there is a set distance between the edge of the container 8 facing the bottom surface of the filter substrate 9 and the bottom surface of the filter substrate 9. This set distance is smaller than the diameter of the sealing ring 5. Since the diameter of the sealing ring 5 is larger than the set distance, it not only prevents the sealing ring 5 from coming out of the gap between the filter substrate 9 and the container 8, but also allows the bottom surface of the filter substrate 9, the mounting groove 41, and the retaining groove 81 to form a limiting area that firmly fixes the sealing ring 5, thereby preventing the sealing ring 5 from moving and causing failure, and improving the sealing performance.

[0070] In this design, the sealing surfaces of the sealing ring support ring 4 and the filter base 9, as well as the sealing surfaces of the sealing ring support ring 4 and the container 8, can all be hard-sealed by the same sealing ring 5. This hard seal effectively prevents large metal particles from leaking along the sealing surface and damaging the sealing ring 5. The sealing ring 5, the filter base 9, the sealing ring support ring 4, and the container 8 form a triple seal at three locations, preventing liquid leakage and achieving high airtightness requirements. Furthermore, by selecting different sizes of O-rings, the compression can be adjusted to meet different levels of sealing requirements. This sealing structure, through the combination of two sealing methods, ensures stable operation of the filter within the hot chamber.

[0071] During the replacement process using the device in Example 1, the sealing ring 5 is in a relatively free state and is not subjected to strong friction. During use, it is only subjected to compression and will not cause any damage to the surface, thus protecting the structural integrity of the sealing ring and greatly extending its service life.

[0072] In this embodiment, as Figure 6 and Figure 7 As shown, the container 8 includes a connecting part 82, a filter cup 83, and a filter tube 84. The connecting part 82 is sleeved on the outside of the sealing ring support ring 4 and is used to connect the sealing ring support ring 4 and the filter cup 83. A slot 81 is provided on the connecting part 82. The filter cup 83 is used to hold the material to be filtered. The filter tube 84 connects the filter cup 83 and the interface 91 at the bottom of the filter base 9 so that the filter base 9 can draw liquid from the material to be filtered in the filter cup 83 through the filter tube 84.

[0073] The filter tube 84 is installed on the interface 91 at the bottom of the filter base 9. During operation, liquid in the filter cup 83 is drawn through this interface. The liquid is drawn away through the filter tube 84, thereby filtering out the desired solids. After the suction is completed, the remaining solids still have a certain amount of moisture and will thickly adhere to the filter tube 84. Therefore, this embodiment also provides a special tool - a scraper device 85 - to peel the adhered solids off the filter tube 84 and let them fall into the filter cup 83.

[0074] Specifically, such as Figure 8As shown, the scraper device 85 of this embodiment includes an annular plate 851 and scrapers 852. The annular plate 851 is disposed around the periphery of the filter tube 84 and has a through hole in the center that allows the filter tube 84 to pass through. Multiple scrapers 852 are provided, and each scraper 852 is arranged around the center of the annular plate 851 and is arranged to move radially along the annular plate 851, so that it can contact the filter tube 84 radially along the annular plate 851 to scrape off the solids adhering to the filter tube 84.

[0075] Among them, such as Figure 9 As shown, the ring plate 851 consists of two semi-ring-shaped pieces that meet to form a ring structure. These pieces are hinged together, with a torsion spring 854 at the hinge axis. Under the force of the torsion spring 854, the two pieces automatically meet to form the ring plate 851. This structure allows the ring plate 851 to open and close, facilitating clamping at the filter tube 84 and preventing interference. Clamping parts can also be provided on the ring plate 851, creating a scissor-like hinge structure with the two semi-ring-shaped pieces, the clamping parts, and the hinge axis. The clamping parts can also have slots for easy gripping by a robotic arm. The torsion spring 854 controls the opening and closing of the scraper device 85. The bottom of the ring plate 851 has four hooks, such as... Figure 7 As shown, the auxiliary scraper device 85 is fixed to the top of the filter cup 83.

[0076] The blade of scraper 852 has an arc-shaped structure, such as... Figure 11 As shown, each scraper 852 can move radially along the ring plate 851 to engage, scraping away the adhering material from the outer periphery of the filter tube 84.

[0077] In this embodiment, the scraper device 85 further includes a mounting block 853, such as Figure 10 As shown, multiple mounting blocks 853 are provided, each arranged around the center of the ring plate 851. A blade slide rail 8531 is provided on a vertical plane radially arranged within the mounting block 853 along the ring plate 851. The blade slide rail 8531 has a strip-shaped groove structure, with one end facing the center of the ring plate 851 lower than the other end. The scraper 852 is provided with a connecting shaft 8521, as shown... Figure 12 As shown, the scraper 852 is slidably mounted in the blade slide rail 8531 via the connecting shaft 8521, and thus automatically slides along the blade slide rail 8531 toward the center of the ring plate 851 under the action of gravity.

[0078] Specifically, the mounting block 853 has a fan-shaped structure, and the handle of each scraper 852 is movably disposed in the strip gap between each mounting block 853.

[0079] The downward-sloping blade rail 8531 allows the scraper 852 to automatically move towards the center of the ring plate 851 as it moves downward under its own weight, thus automatically adhering to the filter tube 84 for scraping. In the heated chamber, operation is generally performed remotely. Therefore, after the filter tube 84 is installed on the filter, its verticality often deviates significantly. If a rigid ring-shaped scraper fixed to the filter cup 83 is used, it will collide and scrape against the filter tube 84, easily damaging the equipment. Therefore, this embodiment effectively achieves self-adaptive functionality, automatically completing the adhering and scraping operations without external drive, simplifying the structural components, and avoiding wear on the filter tube 84 caused by external force or rigid connections.

[0080] In this embodiment, two blade slide rails 8531 are provided on each of the two sides of the mounting block 853, and two through holes are provided on the handle of the scraper 852. Two connecting shafts 8521 are respectively installed in the two through holes, and their ends are respectively connected to the blade slide rails 8531 on the two mounting blocks 853.

[0081] When needed, the scraper device 85 is opened by a robotic arm clamping the holding part, covering the filter tube 84 and placing it on the filter cup 83. The mounting block 853 is installed on the ring plate 851 with screws. When the scraper device 85 is installed on the filter cup 83 and is in operation, the scraper 852 will fit against the outer wall of the filter tube 84. As the filter cup 83 descends, the scraper device 85 scrapes across the surface of the filter tube 84 from top to bottom, scraping off the material adhering to the filter tube 84.

[0082] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A filtration system for a heated interior, characterized in that: Includes a filter substrate (9), a container (8), a sealing ring (5), and a filter sealing ring replacement device in the hot chamber. The bottom of the filter substrate (9) is provided with a sealing ring support ring (4), and the outer surface of the sealing ring support ring (4) is provided with a recessed mounting groove (41) at the edge that contacts the bottom surface of the filter substrate (9). The container (8) is fitted over the sealing ring support ring (4), and a groove (81) is provided at the edge of its inner circumference facing the bottom surface of the filter substrate (9). The container (8) includes a filter tube (84). The sealing ring (5) is disposed in the area enclosed by the mounting groove (41) and the slot (81). The hot chamber filter sealing ring replacement device is used to install the sealing ring (5) on the sealing ring support ring (4), and includes a telescopic sleeve (1) and a fixed sleeve (2). The fixed sleeve (2) is coaxially sleeved on the outside of the telescopic sleeve (1). The end of the telescopic sleeve (1) can extend out from the opening (21) of the fixed sleeve (2), and its extended end (11) can abut against the sealing ring support ring (4) of the filter in the hot chamber. The outer diameter of the extended end (11) is not less than the diameter of the sealing ring support ring (4). The sealing ring (5) to be replaced is fitted on the extended end (11). The inner diameter of the opening (21) of the fixed sleeve (2) is consistent with the outer diameter of the protruding end (11) of the telescopic sleeve (1). When the protruding end (11) is aligned and abuts against the sealing ring support ring (4), an axial driving force is applied to the fixed sleeve (2), thereby causing the fixed sleeve (2) to move axially relative to the telescopic sleeve (1) so as to push the sealing ring (5) from the protruding end (11) of the telescopic sleeve (1) to the sealing ring support ring (4) through the edge of the opening (21). The system also includes a scraper device (85), which includes a ring plate (851) and a scraper (852). The annular plate (851) is disposed around the filter tube (84), and has a through hole in the center allowing the filter tube (84) to pass through. The scraper (852) is provided in multiple ways. Each scraper (852) is arranged around the center of the ring plate (851) and is arranged to move radially along the ring plate (851), so that it can contact the filter tube (84) radially along the ring plate (851) to scrape off the solids adhering to the filter tube (84). The scraper device (85) further includes mounting blocks (853), of which multiple mounting blocks (853) are arranged around the center of the ring plate (851). The mounting block (853) has a blade slide rail (8531) on a vertical plane arranged radially along the ring plate (851). The blade slide rail (8531) has a strip-shaped groove structure, with one end facing the center of the ring plate (851) lower than the other end. The scraper (852) is provided with a connecting shaft (8521). The scraper (852) slides in the blade slide rail (8531) through the connecting shaft (8521), so that it automatically slides along the blade slide rail (8531) towards the center of the ring plate (851) under the action of gravity.

2. The thermal chamber filtration system according to claim 1, characterized in that: The sealing ring support ring (4) is provided with an installation groove (41). The outer diameter of the extended end (11) of the telescopic sleeve (1) is consistent with the diameter of the sealing ring support ring (4), so that the fixed sleeve (2) can push the sealing ring (5) into the mounting groove (41) of the sealing ring support ring (4) through the edge of the opening (21).

3. The thermal chamber filtration system according to claim 1, characterized in that: The heat chamber filter seal replacement device also includes an elastic element (3). The telescopic sleeve (1) includes a cylindrical body with a stepped shaft structure. The protruding end (11) of the cylindrical body is a large-diameter end, and the other end is a small-diameter end. The fixed sleeve (2) has an opening (21) at its head end and a through hole at its tail end. The inner diameter of the opening (21) is larger than that of the through hole, and the through hole allows the smaller diameter end to pass through. The diameter of the through hole is smaller than the end face diameter of the fixed sleeve (2), so that a support platform (22) is formed on the tail end face of the fixed sleeve (2). The elastic element (3) is wrapped around the outside of the telescopic sleeve (1), with one end supporting the stepped surface of the telescopic sleeve (1) and the other end supporting the support platform (22).

4. The thermal chamber filtration system according to claim 3, characterized in that: The telescopic sleeve (1) also includes a base plate (12). The small-diameter end of the cylinder passes through the through hole of the fixed sleeve (2) and connects to the bottom plate (12). The diameter of the base plate (12) is larger than the inner diameter of the through hole to limit the telescopic sleeve (1).

5. The thermal chamber filtration system according to claim 1, characterized in that: The hot chamber filter seal ring replacement device also includes a base (6), which serves as a clamping part for transporting the hot chamber filter seal ring replacement device between the hot chamber and the outside via a clamping device. The fixing sleeve (2) is installed on the base (6).

6. The thermal chamber filtration system according to claim 5, characterized in that: The base (6) is a hollow structure, and an installation platform (61) protrudes from the inner wall. The fixing sleeve (2) has a stepped shaft structure, and the stepped surface of the fixing sleeve (2) is fitted and connected to the mounting platform (61).

7. The thermal chamber filtration system according to claim 5, characterized in that: The base (6) has a limiting strip (62) protruding from its outer surface, which is used to limit the clamping device.

8. The thermal chamber filtration system according to claim 5, characterized in that: The hot chamber filter seal replacement device also includes a drive assembly (7), which includes a lifting platform (71) and a drive component (72). The lifting platform (71) is parallel to the bottom surface of the filter inside the hot chamber and is located below the sealing ring support ring (4). The base (6) is placed on the lifting platform (71). The drive unit (72) is connected between the lifting platform (71) and the bottom surface of the filter in the hot chamber, and is used to drive the lifting platform (71) to rise and fall, thereby providing axial driving force to the fixed sleeve (2) on the base (6).

9. The thermal chamber filtration system according to claim 1, characterized in that: The container (8) also includes a connecting part (82) and a filter cup (83). The connecting part (82) is sleeved on the outside of the sealing ring support ring (4) and is used to connect the sealing ring support ring (4) and the filter cup (83). The slot (81) is provided on the connecting part (82). The filter cup (83) is used to hold the material to be filtered. The filter tube (84) connects the filter cup (83) and the interface (91) at the bottom of the filter base (9) so that the filter base (9) can draw liquid from the material to be filtered in the filter cup (83) through the filter tube (84).

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