A thermal filter

Abstract

This invention relates to the field of thermal insulation filtration technology and proposes a thermal insulation filter, including a base, and further comprising: a thermal insulation cylinder, a filter assembly, a filter cartridge, a disassembly mechanism, a drainage mechanism, a sealing assembly, a flange one, and a flange two. The thermal insulation cylinder is disposed on the base, the filter assembly is disposed inside the thermal insulation cylinder, the filter assembly includes a filter cartridge, and a thermal insulation cavity is formed between the filter cartridge and the thermal insulation cylinder, the disassembly mechanism is fixedly disposed on the filter assembly for disassembling the filter assembly, the drainage mechanism is connected to the filter cartridge, the sealing assembly is disposed on the thermal insulation cylinder, flange one is disposed on the outer wall of the thermal insulation cylinder for installing a water inlet pipe, and flange two is disposed on the base for installing a water outlet pipe. This technical solution solves the problem that in existing thermal insulation filters, each maintenance requires disassembling the insulation layer of the filter and then reinstalling it after maintenance, which is inconvenient and wasteful of resources.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and more specifically, to a thermal insulation filter. Background Technology

[0002] Thermal insulation filters are an indispensable insulation device used in water, oil, gas pipelines and various equipment. They are usually installed at the inlet of pressure reducing valves, pressure relief valves, constant water level valves or other equipment to remove impurities in the medium and protect the normal operation of valves and equipment. Existing thermal insulation filters usually achieve the insulation effect by installing an insulation layer on the outer wall of the filter.

[0003] During use, a lot of impurities will accumulate on the filter screen over time. In order to prevent the accumulation of impurities in the medium from affecting the use of the filter, the filter needs to be inspected and the filter element replaced regularly. However, each inspection requires disassembling the insulation layer of the thermal filter and then reinstalling it after the inspection. The whole inspection process is very inconvenient and wastes material and financial resources.

[0004] To facilitate the maintenance and replacement of the filter element in the thermal insulation filter, it is necessary to address the problem of inconvenient disassembly of the insulation layer and filter element while ensuring the filtration and insulation effects. Summary of the Invention

[0005] This invention proposes a thermal insulation filter that solves the problem that in the prior art, the maintenance of thermal insulation filters must first be carried out by disassembling the insulation layer of the filter and then reinstalling it after maintenance, which is very inconvenient and the insulation and filtration effects cannot be guaranteed.

[0006] The technical solution of the present invention is as follows:

[0007] A thermal insulation filter includes a base, a thermal insulation component, a thermal insulation cylinder, a filter component, a filter cartridge, a disassembly mechanism, a drainage mechanism, a sealing component, a temperature balancing component, a flange one, and a flange two. The thermal insulation component is disposed on the base and includes a thermal insulation cylinder. The filter component is disposed inside the thermal insulation cylinder and includes a filter cartridge. A thermal insulation cavity is formed between the filter cartridge and the thermal insulation cylinder. The disassembly mechanism is fixedly disposed on the filter component for disassembling the filter component. The drainage mechanism communicates with the filter cartridge. The sealing component is disposed on the thermal insulation cylinder. The temperature balancing component is located within the thermal insulation cavity formed between the thermal insulation cylinder and the filter cartridge to ensure uniform temperature within the thermal insulation cavity. Flange one is disposed on the outer wall of the thermal insulation cylinder for installing an inlet pipe, and flange two is disposed on the base for installing an outlet pipe.

[0008] Furthermore, the insulation component also includes: a water inlet, a heating sleeve, and a plug. The water inlet is located on the outer wall of the filter cylinder to allow water to enter the insulation cavity. The heating sleeve is located on the outer wall of the insulation cylinder in a semi-enclosed manner. The plug is electrically connected to the heating sleeve via a wire.

[0009] Furthermore, the filtration assembly includes a filter cylinder, a filter ball, and a filter screen. The filter cylinder is mounted on the base and is fitted inside the insulation cylinder. The filter ball is a spherical structure composed of multiple rings and is rotatably mounted on the filter cylinder. There are two filter screens, which are respectively located at the top and bottom of the filter ball, for filtering large particulate impurities that appear in the liquid to be filtered.

[0010] Furthermore, the disassembly mechanism includes: a fixed plate, a rotating rod, a cross-shaped limiting groove, and a rotating handle. The fixed plate is arranged around the outer wall of the insulation cylinder. The rotating rod is fixedly connected to the filter ball. The cross-shaped limiting groove is formed on the fixed plate and is cross-shaped to limit the rotation angle of the rotating rod. The rotating handle is fixedly arranged on the rotating rod.

[0011] Preferably, the drainage mechanism includes a drain pipe, a valve, and a pressure gauge. The drain pipe is connected to the filter cartridge, the valve is installed on the drain pipe, and the pressure gauge is installed on the drain pipe for observing the pressure in the filter cartridge during maintenance.

[0012] More preferably, the sealing assembly includes: an insulation cover, a sealing cover, a rotating handle, and a handle. The insulation cover is annular and is disposed on the insulation cylinder. The sealing cover is threaded onto the filter cylinder. The rotating handle is disposed on the insulation cover, and the handle is disposed on the sealing cover, for convenient opening of the sealing cover for maintenance.

[0013] Based on the above scheme, preferably, the temperature balancing component includes: a limiting groove, a stirring blade, a first gear, a second gear, a motor, and a magnetic rod. The limiting groove is annular and is located on the base. The stirring blade is slidably installed in the limiting groove. The first gear is rotatably mounted on the bottom outer wall of the base, and the second gear is mounted on the bottom outer wall of the base, meshing with the first gear. The motor is located below the base, and its output end is fixedly connected to the second gear. The magnetic rod is mounted on the first gear, and a magnet is provided at the end of the magnetic rod away from the first gear. As the magnetic rod rotates with the first gear, the magnet moves circumferentially along the bottom outer wall of the base.

[0014] Based on the above scheme, more preferably, the filter ball includes: a filter clip and a spherical filter element. The filter clip is rotatably mounted on the filter cylinder. The filter clip is a spherical structure composed of multiple rings. The shape of the spherical filter element matches the shape of the filter clip. When in use, the spherical filter element is inserted into the filter clip and plays the main filtering role.

[0015] Based on the above scheme, the rotating rod further includes: a spring rod, a connecting rod, and a limiting rod. One end of the spring rod is fixedly mounted on the filter ball, and the end of the spring rod away from the filter ball is fixed on the fixing plate. The connecting rod is slidably mounted inside the spring rod, and a slider is provided on the outer wall of the connecting rod. The limiting rod is mounted on the connecting rod and is used to fix the rotation direction of the connecting rod. The limiting rod cooperates with the cross limiting groove.

[0016] Furthermore, based on the above solution, the filter clip is provided with a groove, which is used to fix the spherical filter element when it is inserted into the filter clip.

[0017] The working principle and beneficial effects of this invention are as follows:

[0018] 1. In this invention, a cavity is formed between the insulation cylinder and the filter cylinder, which uses the principle of air layer insulation to achieve the function of insulation. When the liquid flows in from flange one, it first passes through the filter screen, which filters out large particulate impurities that may be present in the liquid. Then the liquid passes through the filter element. The spherical filter element is set to multiple layers, and the liquid is filtered layer by layer in the spherical filter element before flowing out through flange two.

[0019] 2. In this invention, when the heat-insulating filter cylinder is repaired or the filter element is replaced, the pressure is first released. After the pressure is released, the drainage mechanism is activated to drain the liquid in the pipe. Then the sealing assembly is opened, the disassembly mechanism is adjusted, the filter element is taken out, a new filter element is installed, the disassembly mechanism is adjusted to fix the filter element, and finally the sealing assembly is closed again.

[0020] 3. In this invention, the internal parts of the heat-insulating filter can be inspected and the filter element replaced by opening the sealing assembly, which is very convenient. Compared with the existing technology of removing the insulation layer for maintenance, it saves costs and maintenance time, and the work is more efficient and convenient. In addition, the heat-insulating cylinder adopts the air layer insulation method, which reduces the contact between the insulation layer and other materials, resulting in a longer service life. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom of the overall structure in this invention;

[0024] Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the filter clip structure in this invention;

[0026] Figure 5 This is a schematic diagram of the spherical filter element in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of the filter assembly, the heat preservation cylinder, and the filter cylinder in this invention.

[0028] Figure 7 This is a schematic diagram of the disassembly mechanism assembly in this invention;

[0029] Figure 8 This is a schematic diagram of the temperature balancing component in this invention;

[0030] Figure 9 This is a schematic diagram of the sealing component assembly in this invention.

[0031] The labels in the diagram represent: 1. Base; 2. Insulation component; 3. Insulation cylinder; 4. Filter component; 5. Filter cylinder; 6. Disassembly mechanism; 7. Drainage mechanism; 8. Sealing component; 9. Temperature balancing component; 10. Flange 1; 11. Flange 2;

[0032] 21. Water inlet; 22. Heating jacket; 23. Plug;

[0033] 42. Filter ball; 43. Filter screen;

[0034] 61. Fixed plate; 62. Rotating rod; 63. Cross-shaped limiting groove; 64. Rotating handle;

[0035] 71. Drain pipe; 72. Valve; 73. Pressure gauge;

[0036] 81. Insulation cover; 82. Sealing cover; 83. Rotating handle; 84. Handle;

[0037] 91. Limiting groove; 92. Stirring blade; 93. Gear 1; 94. Gear 2; 95. Motor; 96. Magnetic suction rod;

[0038] 421. Filter clip; 422. Spherical filter element;

[0039] 621. Spring rod; 622. Connecting rod; 623. Limiting rod. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] like Figures 1-9 As shown, this embodiment proposes a thermal insulation filter, including a base 1, a thermal insulation component 2, a thermal insulation cylinder 3, a filter component 4, a filter cylinder 5, a disassembly mechanism 6, a drainage mechanism 7, a sealing component 8, a temperature balancing component 9, a flange 10, and a flange 2 11. The thermal insulation component 2 is mounted on the base 1 and includes the thermal insulation cylinder 3. The filter component 4 is mounted inside the thermal insulation cylinder 3 and includes the filter cylinder 5. A thermal insulation cavity is formed between the filter cylinder 5 and the thermal insulation cylinder 3. The disassembly mechanism 6 is fixedly mounted on the filter component 4. The filter assembly 4 is disassembled, the drainage mechanism 7 is connected to the filter cylinder 5, the sealing assembly 8 is installed on the insulation cylinder 3, and the temperature balancing assembly 9 is located in the insulation cavity formed between the insulation cylinder 3 and the filter cylinder 5 to ensure uniform temperature within the insulation cavity. Flange 10 is installed on the outer wall of the insulation cylinder 3 for installing the inlet pipe, and flange 2 11 is installed on the base 1 for installing the outlet pipe. When the liquid to be filtered flows into the insulation filter through flange 10, the liquid first passes through the filter screen 43, which filters out any large particles that may be present in the liquid. Impurities are filtered out, and then the liquid passes through the filter element. The spherical filter element 422 is multi-layered, and the liquid is filtered layer by layer in the spherical filter element 422 before flowing out through flange 11, completing the filtration operation. When the insulated filter cylinder 5 needs maintenance or the filter element needs to be replaced, the pressure must first be released. After the pressure is released, the drainage mechanism 7 is activated to drain the water in the pipeline. Then, the sealing assembly 8 is opened, and the disassembly mechanism 6 is adjusted to open the filter ball 42. At this time, the filter element is replaced for maintenance. After completion, the filter element is reinstalled, and the maintenance is completed. This process does not require disassembly. Removing the insulation layer saves resources and avoids waste. Furthermore, replacing the filter element does not require a professional maintenance team, saving manpower and financial resources. When winter comes and the temperature is very low, the filter needs to be insulated. First, the liquid flows from the through hole on the filter cylinder 5 into the insulation cavity between the filter cylinder 5 and the insulation cylinder 3. The insulation component 2 also has a heating function, which heats the liquid in the insulation cavity, keeping the filter cylinder 5 at a high temperature. The insulation cavity is also equipped with a temperature balancing component 9, which makes the heating more uniform and prevents the liquid from condensing in areas where it is not heated properly.

[0043] The insulation component 2 also includes: a water passage 21, a heating sleeve 22, and a plug 23. The water passage 21 is located on the outer wall of the filter cylinder 5 to allow water to enter the insulation cavity. The heating sleeve 22 is located on the outer wall of the insulation cylinder 3 in a semi-enclosed form. The plug 23 is electrically connected to the heating sleeve 22 via a wire. When in use, the plug 23 needs to be plugged into a socket to be powered on. Liquid flows from the filter cylinder 5 through the water passage 21 into the insulation cavity formed between the insulation cylinder 3 and the filter cylinder 5. The powered heating sleeve 22 heats the liquid in the insulation cavity, thereby heating the filter. The heating effect of the heating sleeve 22 allows the filter to work normally in winter and prevents the filter from being blocked by liquid condensation due to low temperature.

[0044] The filter assembly 4 includes a filter cylinder 5, a filter ball 42, and a filter screen 43. The filter cylinder 5 is mounted on the base 1 and is fitted inside the insulation cylinder 3. The filter ball 42 is a spherical structure composed of multiple rings and is rotatably mounted on the filter cylinder 5. There are two filter screens 43, which are respectively located at the top and bottom of the filter ball 42. They are used to filter large particles of impurities in the liquid to be filtered. When the liquid flows into the filter assembly 4 to start filtration, it first passes through the filter screen 43. The filter screen 43 can filter out large particles that may sometimes be present in the liquid, preventing large particles of impurities from accumulating on the filter element in the method of relying solely on the filter element. Over a long period of time, excessive large particles of impurities will adhere to the surface of the filter element, affecting the filtration effect of the filter element.

[0045] Secondly, the disassembly mechanism 6 includes: a fixed plate 61, a rotating rod 62, a cross-shaped limiting groove 63, and a rotating handle 64. The fixed plate 61 is arranged around the outer wall of the insulation cylinder 3. The rotating rod 62 is fixedly connected to the filter ball 42. The cross-shaped limiting groove 63 is opened on the fixed plate 61 and is cross-shaped to limit the rotation angle of the rotating rod 62. The rotating handle 64 is fixedly arranged on the rotating rod 62. When it is necessary to disassemble the spherical filter element 422, adjust the disassembly mechanism 6. First, pull up the rotating handle 64 to rotate the rotating rod 62 by 90 degrees. Then, the straight limiting rod 623 on the rotating rod 62 is inserted into the cross-shaped limiting groove 63. At this time, the filter clip 421 rotates. With the openable side of the filter clip 421 facing upwards, the spherical filter element 422 can be taken out and replaced. This is very convenient for personnel who do not need professional skills, and this method allows for relatively frequent replacement of the filter element to ensure the filtration effect.

[0046] The drainage mechanism 7 includes a drain pipe 71, a valve 72, and a pressure gauge 73. The drain pipe 71 is connected to the filter cartridge 5, the valve 72 is installed on the drain pipe 71, and the pressure gauge 73 is installed on the drain pipe 71 to observe the pressure in the filter cartridge 5 during maintenance. When maintaining or replacing the filter element, the pressure is released first, and then the water is drained. The drain pipe 71 is located at the bottom of the heat-insulating filter to ensure that the liquid is drained more cleanly.

[0047] Secondly, the sealing assembly 8 includes: an insulation cover 81, a sealing cover 82, a rotating handle 83, and a handle 84. The insulation cover 81 is ring-shaped and is mounted on the insulation cylinder 3. The sealing cover 82 is threaded onto the filter cylinder 5. The rotating handle 83 is mounted on the insulation cover 81, and the handle 84 is mounted on the sealing cover 82. This allows for easy opening of the sealing cover 82 for maintenance. During maintenance, after the depressurization and drainage steps are completed, the handle 84 is rotated to remove the sealing cover 82 for maintenance and filter element replacement. The sealing cover 82 is located at the top of the filter cylinder 5 and does not affect the filtration and insulation effect, making maintenance convenient.

[0048] The temperature balancing component 9 includes: a limiting groove 91, a stirring blade 92, a first gear 93, a second gear 94, a motor 95, and a magnetic rod 96. The limiting groove 91 is annular and is mounted on the base 1. The stirring blade 92 is slidably mounted within the limiting groove 91. The first gear 93 is rotatably mounted on the bottom outer wall of the base 1. The second gear 94 is mounted on the bottom outer wall of the base 1 and meshes with the first gear 93. The motor 95 is located below the base 1, and its output end is fixedly connected to the second gear 94. The magnetic rod 96 is mounted on the first gear 93, and the end of the magnetic rod 96 furthest from the first gear 93 is provided with... As the magnetic rod 96 rotates with the gear 93, the magnetic block moves circumferentially along the bottom outer wall of the base 1. When the liquid flows from the filter cylinder 5 into the heat-insulating cavity formed between the filter cylinder 5 and the heat-insulating cylinder 3 and begins to heat up, the motor 95 starts. The motor 95 drives the gear 94 to rotate, which in turn drives the gear 93 to rotate. The magnetic rod 96 on the gear 93 rotates accordingly. Under the action of magnetic force, the stirring blade 92 inside the filter cylinder 5 swings along the annular limiting groove 91 with the magnetic rod 96, making the hot and cold water inside the filter cylinder 5 more evenly mixed and improving the heat preservation effect.

[0049] The filter ball 42 includes a filter clamp 421 and a spherical filter element 422. The filter clamp 421 is rotatably mounted on the filter cylinder 5 and is a spherical structure composed of multiple rings. The shape of the spherical filter element 422 matches the shape of the filter clamp 421. During use, the spherical filter element 422 is inserted into the filter clamp 421 and performs the main filtering function. The filter clamp 421 is connected to the disassembly mechanism 6. During operation, the rotating rod 62 rotates, causing the filter clamp 421 to rotate accordingly. When the filter ball 42 performs filtering, the limiting rod 623 on the rotating rod 62... The filter clip 421 is vertically positioned within the cross-shaped limiting groove 63, and its opening is tightly fitted to the inner wall of the filter cylinder 5. The spherical filter element 422 will not fall off or become misaligned. When the spherical filter element 422 is disassembled, the rotating rod 62 rotates, and the limiting rod 623 on the rotating rod 62 rotates parallel to the cross-shaped limiting groove 63. The filter clip 421 rotates accordingly, and its opening rotates to face the sealing cover 82. At this point, the spherical filter element 422 can be removed. After replacing it with a new filter element, the rotating rod 62 is rotated again to fix the filter clip 421, and the sealing cover 82 is then closed.

[0050] Finally, the rotating rod 62 includes a spring rod 621, a connecting rod 622, and a limiting rod 623. One end of the spring rod 621 is fixedly mounted on the filter ball 42, and the other end of the spring rod 621 away from the filter ball 42 is fixed on the fixing plate 61. The connecting rod 622 is slidably mounted inside the spring rod 621, and a slider is provided on the outer wall of the connecting rod 622. The limiting rod 623 is mounted on the connecting rod 622 and is used to fix the rotation direction of the connecting rod 622. The limiting rod 623 cooperates with the cross-shaped limiting groove 63. The spring in the spring rod 621 can stretch the rotating rod 62 to a certain extent. In use, the rotating rod 62 is stretched to pull the limiting rod 623 away from the cross-shaped limiting groove 63. Then the rotating rod 62 is rotated, and the limiting rod 623 is placed in the cross-shaped limiting groove 63. The operation is relatively simple and can be performed by a single person.

[0051] Example 2

[0052] Based on the above solutions, we also propose a cleaning component. A spherical brush or cleaning cloth can be installed on the filter clip 421. By rotating the handle 84, the inner wall of the filter cartridge 5 can be cleaned simply to prevent too many impurities attached to the inner wall of the filter cartridge 5 from affecting the filtration effect.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat retaining filter comprising a base (1), characterised in that, Also include: The heat preservation assembly (2) is arranged on the base (1), and the heat preservation assembly (2) comprises a heat preservation cylinder (3); The filter assembly (4) is arranged in the heat preservation cylinder (3), and the filter assembly (4) comprises a filter cylinder (5); the filter cylinder (5) and the heat preservation cylinder (3) form a heat preservation cavity; The dismounting mechanism (6) is fixedly arranged on the filter assembly (4) and is used for dismounting the filter assembly (4); The drainage mechanism (7) is communicated with the filter cylinder (5); The sealing assembly (8) is arranged on the heat preservation cylinder (3); The temperature balancing assembly (9) is located in the heat preservation cavity formed between the heat preservation cylinder (3) and the filter cylinder (5) and is used for making the temperature in the heat preservation cavity uniform; The flange one (10) is arranged on the outer wall of the heat preservation cylinder (3) and is used for installing a water inlet pipe; The flange two (11) is arranged on the base (1) and is used for installing a water outlet pipe; The filter assembly (4) comprises: The filter cylinder (5) is arranged on the base, and the filter cylinder (5) is sleeved in the heat preservation cylinder; The filter ball (42) is arranged in a spherical structure composed of multiple annular rings, and the filter ball (42) is rotatably arranged on the filter cylinder (5); The filter net (43) is provided with two, and the two filter nets (43) are arranged at the top and bottom of the filter ball (42) respectively, and are used for filtering large particles in the liquid to be filtered; The dismounting mechanism (6) comprises: The fixed plate (61) is arranged on the outer wall of the heat preservation cylinder; The rotating rod (62) is fixedly connected with the filter ball (42); The cross limiting groove (63) is arranged on the fixed plate (61) and is provided in a cross shape, and is used for limiting the rotation angle of the rotating rod (62); The rotating handle (64) is fixedly arranged on the rotating rod (62); The filter ball (42) comprises: The filter clamp (421) is rotatably arranged on the filter cylinder (5), and the filter clamp (421) is arranged in a spherical structure composed of multiple annular rings; The spherical filter core (422) is matched with the shape of the filter clamp (421), and the spherical filter core (422) is inserted into the filter clamp (421) during use and plays a filtering role; The sealing assembly (8) comprises a sealing cover (82), and the sealing cover (82) is threadedly arranged on the filter cylinder (5); When the filter ball (42) is working, the opening of the filter clamp (421) is tightly attached to the inner wall of the filter cylinder (5), and the spherical filter core (422) cannot fall off or dislocate. When the spherical filter core (422) is removed, the rotating rod (62) is rotated, and the filter clamp (421) is rotated, and the opening of the filter clamp (421) is rotated to face the sealing cover (82).

2. A heat retaining filter according to claim 1, wherein The heat preservation assembly (2) further comprises: A water passage (21) is arranged on the outer wall of the filter cylinder (5) to allow water to enter the heat preservation cavity; A heating sleeve (22) is arranged in a semi-enclosing manner on the outer wall of the heat preservation cylinder; A plug (23) is electrically connected to the heating sleeve (22) through a wire.

3. A heat retaining filter according to claim 2, wherein The drainage mechanism (7) comprises: A drainage pipe (71) is arranged on the filter cylinder (5); A valve (72) is arranged on the drainage pipe (71); A pressure gauge (73) is arranged on the drainage pipe (71) to observe the pressure in the filter cylinder (5) during maintenance.

4. A heat retaining filter according to claim 3, wherein The sealing assembly (8) further comprises: A heat preservation cover (81) is arranged in an annular shape on the heat preservation cylinder; A rotating handle (83) is arranged on the heat preservation cover (81); A handle (84) is arranged on the sealing cover (82) to facilitate opening of the sealing cover (82) during maintenance.

5. A heat retaining filter according to claim 4, wherein The temperature balancing assembly (9) comprises: A limiting groove (91) is arranged in an annular shape on the base; A stirring blade (92) is slidably installed in the limiting groove (91); A gear one (93) is rotatably arranged on the bottom end outer wall of the base; A gear two (94) is arranged on the bottom end outer wall of the base and is engaged with the gear one (93); A motor (95) is located below the base, and an output end of the motor (95) is fixedly connected with the gear two (94); A magnetic attraction rod (96) is arranged on the gear one (93), and a magnet block is arranged on the end of the magnetic attraction rod (96) away from the gear one (93). During rotation of the gear one (93), the magnet block moves along the bottom end outer wall of the base (1) under the base (1).

6. A heat retaining filter according to claim 5, wherein The rotating rod (62) comprises: A spring rod (621) is fixedly arranged on one end of the filter ball (42), and the other end of the spring rod (621) is fixedly arranged on the fixed plate (61). A connecting rod (622) is slidingly arranged in the spring rod (621), and an outer wall of the connecting rod (622) is provided with a sliding block; A limiting rod (623) is arranged on the connecting rod (622) and used for fixing the rotating direction of the connecting rod (622), and the limiting rod (623) cooperates with the cross limiting groove (63).

7. A heat retaining filter according to claim 6, characterised in that The filter clamp (421) is provided with a groove, which is used for fixing the spherical filter core (422) when the spherical filter core (422) is inserted into the filter clamp (421).

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