Filtering machine and method for producing fireproof coating

Abstract

The invention relates to the technical field of coating production equipment, in particular to a filtering machine for fireproof coating production and a method thereof.The filtering machine comprises a filtering chamber, a transmission chamber is fixedly connected to the inner wall of the lower end of the filtering chamber, a cleaning assembly is arranged in the transmission chamber, and a triangular flow dividing piece is fixedly connected to the top of the transmission chamber; the two sides of the transmission chamber are fixedly connected with separation covers. A motor drives a second rotating rod to rotate and drives a stirring rod to clean a filter screen and extrude large-particle fireproof coating, the filter screen is cleaned so as to prevent the filter screen from being blocked, an upper cleaning ring and a lower cleaning ring clean the inner wall of the filter chamber, cross contamination is prevented, and the cleaning efficiency is improved. And meanwhile, under transmission between a gear column and a gear in the cleaning assembly, the metal cover achieves intermittent magnetic adsorption of the metal chippings, separation between the metal chippings and the fireproof coating is achieved, and the metal chippings in the fireproof coating can be cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paint production equipment, in particular to a filter for fireproof paint production and a method. BACKGROUND

[0002] Fireproof paint, also known as flame-retardant paint, is a special paint that can be used on the surface of flammable substrates, can reduce the flammability of the painted material surface, and can prevent the rapid spread of fire and improve the fire resistance of the painted material. Fireproof paint is mainly composed of a base material and a flame-retardant additive.

[0003] China Patent No. CN220443410U discloses a filter for fireproof paint production, which includes a support plate. The outer surface of the filter barrel is fixedly connected to the inner side of the support plate. The bottom end of the filter barrel is fixedly connected to a discharge barrel. The inner wall of the filter barrel is fixedly connected to two filter screens. The inner wall of the filter barrel is fixedly connected to a baffle. The top of the filter barrel is provided with a gas purification mechanism. The top of the support plate is provided with a blowing mechanism. The top of the support plate is provided with a flushing mechanism. The patent has a reasonable structure. When the equipment starts filtering, the dust generated during the process will enter the gas purification barrel through the dust suction pipe, and then be filtered by the filter screen. The filtered gas will be discharged through the exhaust pipe, solving the problem of damage to the human body caused by inhaling dust.

[0004] Although the above-mentioned patent realizes the filtration of dust by the cooperation of the gas purification tank, dust suction pipe, filter screen two and exhaust pipe, and solves the problem of damage to the human body caused by inhaling dust, considering that the fireproof paint is mostly in a solvent type liquid state before being screened during production, it is necessary to first screen out larger and undispersed particles. In addition, the fireproof paint in the form of liquid solvent slurry after grinding needs to be prevented from scratching the coating and catalyzing oxidation.

[0005] In view of the above, we propose a filter for fireproof paint production and a method. SUMMARY

[0006] The purpose of the present application is to provide a filter for fireproof paint production and a method to solve the problems raised in the background art.

[0007] In order to achieve the above object, in one aspect, the application provides a filter for fireproof coating production and a method thereof, comprising a filter chamber, an inlet opening is formed in the outer wall of the upper end of the filter chamber, a fixed base is fixedly connected to the bottom of the filter chamber, a discharge pipeline is fixedly connected to the outer wall of the fixed base, a motor is fixedly connected to the top of the filter chamber, a first rotating rod is fixedly connected to the output end of the motor, an extension rod is fixedly connected to the bottom of the first rotating rod, a transmission chamber is fixedly connected to the inner wall of the lower end of the filter chamber, and a cleaning assembly is arranged in the transmission chamber;

[0008] An upper cleaning ring is slidably connected to the inner wall of the filter chamber, and a filter screen is detachably connected to the inner wall of the upper cleaning ring;

[0009] A triangular flow divider is fixedly connected to the top of the transmission chamber, and a separation cover is fixedly connected to the positions on both sides of the transmission chamber, and the cleaning assembly is arranged at the position between the two separation covers.

[0010] As a preferred embodiment of the application, the filter chamber comprises a first cavity, a second cavity and a third cavity, the first cavity is located at the top position of the filter screen, the second cavity is located at the bottom position of the filter screen, and the third cavity is located at the inner position of the separation cover.

[0011] As a preferred embodiment of the application, the bottom of the extension rod is fixedly connected to a second rotating rod, the second rotating rod penetrates the triangular flow divider, the outer wall of the second rotating rod is fixedly connected to a plurality of stirring rods, and the stirring rods are located at the top position of the filter screen.

[0012] As a preferred embodiment of the application, a plurality of electromagnetic strips are fixedly connected to the outer wall of one side of the separation cover, and a plurality of metal covers are fixedly connected to the inner wall of the separation cover, and the positions of the metal covers are matched with the positions of the electromagnetic strips.

[0013] As a preferred embodiment of the application, the cleaning assembly comprises a square fixed column, the square fixed column is fixedly connected to the inner wall of the transmission chamber, a first extension plate is fixedly connected to the middle end of the square fixed column, a limiting column is fixedly connected to the top of the end of the first extension plate away from the square fixed column, a sliding bent rod is slidably connected to the inner side of the square fixed column, the sliding bent rod penetrates the square fixed column, a plurality of vertical rods are fixedly connected to the bottom of the upper end bent part of the sliding bent rod, a conical rotating wheel is rotatably connected between the plurality of vertical rods, and the vertical rods and the conical rotating wheel are also arranged at the top of the end of the first extension plate close to the square fixed column.

[0014] As a preferred embodiment of the present invention, a second extension plate is fixedly connected to the inner side of the lower end of the sliding bending rod, a limiting disc is fixedly connected to the bottom center of the second extension plate, a third extension plate is fixedly connected to the outer wall of the lower inner end of the square fixed column, a first column and a second column are fixedly connected to the top of the third extension plate, a rotating column is rotatably connected to the outer wall of the upper end of the first column, a turntable is fixedly connected to the outer walls of both the upper and lower ends of the rotating column, and multiple solenoid valves are fixedly connected to the outer wall of the turntable.

[0015] As a preferred embodiment of the present invention, a circular gear is fixedly connected to the outer wall of the middle end of the rotating column, and a first gear column is rotatably connected to the top of the second column, the first gear column being meshed with the circular gear.

[0016] As a preferred embodiment of the present invention, a rotating ring is movably connected to the outer wall of the limiting column. The top and bottom of the rotating ring are both inclined. A rack is fixedly connected to the outer wall of the middle end of the rotating ring. The rack meshes with a first gear column. The top and bottom surfaces of the rotating ring are both provided with inclined surfaces. The inclined surfaces fit with the outer walls of multiple conical rotating wheels and are in contact with each other. A second gear column meshes between the racks on both sides. The second gear column is fixedly connected to the bottom of the second rotating rod.

[0017] As a preferred embodiment of the present invention, a third rotating rod is fixedly connected to the bottom of the second gear column, and a circular fixed column is fixedly connected to the third rotating rod through the third extension plate. The circular fixed column is located at the top of the limiting disc. An extension rod is fixedly connected to the top of the sliding bending rod, and a fixed block is fixedly connected to the end of the extension rod away from the sliding bending rod. The extension rod passes through the triangular diverter, and a lower cleaning ring is fixedly connected to the outer wall of the fixed block. The lower cleaning ring is slidably connected to the outer wall of the filter chamber.

[0018] On the other hand, the present invention also provides a filter and method for producing fire-retardant coatings, the operation steps of which are as follows:

[0019] S1. First, the fireproof coating slurry is transported from the inlet to the filter chamber. After being stirred and cleaned by the stirring rod, it is then transported to the second chamber.

[0020] S2. Then, the cleaning components drive the upper and lower cleaning rings to clean the inner wall of the filter chamber.

[0021] S3, and under the drive of the cleaning component, the solenoid valve intermittently generates magnetism, causing the fireproof coating to separate from the metal debris;

[0022] S4, and finally, it is transported out through the discharge pipes of the No. 3 chambers on both sides.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. In the filter machine used for producing fireproof coating, the No. 2 rotating rod is driven by a motor to rotate and drive the stirring rod to clean the filter screen and squeeze larger fireproof coating particles, thereby cleaning the filter screen and preventing it from clogging.

[0025] 2. In this fire-retardant coating production filter, the upper and lower cleaning rings are driven by the cleaning components to clean the fire-retardant coating adhering to the inner wall of the filter chamber, so as to prevent cross-contamination of subsequent coatings.

[0026] 3. In the filter machine used for the production of fire-retardant coating, the metal cover intermittently magnetically adsorbs metal debris through the transmission between the gear column and the gear in the cleaning component, thereby achieving the separation of metal debris from the fire-retardant coating and cleaning the metal debris in the fire-retardant coating. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the filter machine used for producing fire-retardant coatings according to the present invention;

[0028] Figure 2 This is a schematic cross-sectional view of the filter machine used for producing fire-retardant coatings according to the present invention.

[0029] Figure 3 This is a longitudinal sectional view of the internal chamber of the filter machine for producing fire-retardant coatings according to the present invention;

[0030] Figure 4 This is a half-sectional perspective view of the interior of the filter chamber of the filter machine for producing fire-retardant coatings according to the present invention.

[0031] Figure 5 This is a three-dimensional unfolded schematic diagram of the interior of the filter chamber of the filter machine for producing fire-retardant coatings according to the present invention;

[0032] Figure 6 A detailed perspective view showing the location of the cleaning component inside the filter chamber of the filter machine for producing fire-retardant coatings according to the present invention.

[0033] Figure 7 This is a three-dimensional schematic diagram of the cleaning component of the filter machine for producing fire-retardant coatings according to the present invention.

[0034] Figure 8 This is a three-dimensional schematic diagram of the cleaning component of the filter machine for producing fire-retardant coatings according to the present invention.

[0035] The meanings of the labels in the diagram are as follows:

[0036] 1. Filter chamber; 11. Inlet; 12. Outlet pipe; 13. Fixed base; 14. Motor; 141. Rotating rod No. 1; 142. Telescopic rod; 143. Stirring rod; 144. Rotating rod No. 2; 15. Transmission chamber; 151. Triangular flow divider; 16. Separation cover; 161. Electromagnetic strip; 162. Metal cover; 2. Upper cleaning ring; 21. Filter screen; 3. Chamber No. 1; 31. Chamber No. 2; 32. Chamber No. 3;

[0037] 4. Cleaning components; 41. Square fixing post; 411. Extension plate No. 1; 412. Restricting post; 413. Sliding bending rod; 414. Vertical rod; 415. Conical rotating wheel; 416. Extension plate No. 2; 417. Restricting disc; 42. Extension plate No. 3; 421. Column No. 1; 422. Rotating post; 423. Turntable; 424. Solenoid valve; 425. Circular gear; 426. Column No. 2; 427. Gear column No. 1; 43. Rotating ring; 431. Rack; 432. Inclined surface; 44. Gear column No. 2; 441. Rotating rod No. 3; 442. Circular fixing post; 45. Extension rod; 451. Fixing block; 46. Lower cleaning ring. Detailed Implementation

[0038] The technical solutions in 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.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying 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] Example 1

[0041] Please see Figures 1-8As shown, this embodiment provides a filter machine for producing fire-retardant coatings, including a filter chamber 1. An inlet 11 is provided on the upper outer wall of the filter chamber 1. A fixed base 13 is fixedly connected to the bottom of the filter chamber 1. A discharge pipe 12 is fixedly connected through the outer wall of the fixed base 13. A motor 14 is fixedly connected to the top of the filter chamber 1. A first rotating rod 141 is fixedly connected to the output end of the motor 14. A telescopic rod 142 is fixedly connected to the bottom of the first rotating rod 141. A transmission chamber 15 is fixedly connected to the lower inner wall of the filter chamber 1. A cleaning assembly 4 is provided inside the transmission chamber 15. An upper cleaning ring 2 is slidably connected to the inner wall of the filter chamber 1. A filter screen is detachably connected to the inner wall of the upper cleaning ring 2. 21; A triangular diverter 151 is fixedly connected to the top of the transmission chamber 15, and separation covers 16 are fixedly connected to both sides of the transmission chamber 15. The cleaning component 4 is located between the two separation covers 16. A second rotating rod 144 is fixedly connected to the bottom of the telescopic rod 142. The second rotating rod 144 passes through the triangular diverter 151. Multiple stirring rods 143 are fixedly connected to the outer wall of the second rotating rod 144. The stirring rods 143 are located at the top of the filter screen 21. Multiple electromagnetic strips 161 are fixedly connected to one side of the outer wall of the separation cover 16. Multiple metal covers 162 are fixedly connected to the inner wall of the separation cover 16. The positions of the metal covers 162 and the electromagnetic strips 161 are matched.

[0042] like Figure 3 As shown, the filter chamber 1 includes a first chamber 3, a second chamber 31, and a third chamber 32. The first chamber 3 is located at the top of the filter screen 21, the second chamber 31 is located at the bottom of the filter screen 21, and the third chamber 32 is located inside the separation cover 16.

[0043] like Figures 6-8As shown, the cleaning component 4 includes a square fixed post 41, which is fixedly connected to the inner wall of the transmission chamber 15. An extension plate 411 is fixedly connected to the middle end of the square fixed post 41. A limiting post 412 is fixedly connected to the top of the extension plate 411 at the end furthest from the square fixed post 41. A sliding bending rod 413 is slidably connected to the inner side of the square fixed post 41, penetrating through the square fixed post 41. Multiple vertical rods 414 are fixedly connected to the bottom of the upper bent portion of the sliding bending rod 413. Conical wheels 415 are rotatably connected between the multiple vertical rods 414. A vertical rod 414 and a conical wheel 415 are also provided at the top of the extension plate 411 at the end closest to the square fixed post 41. The lower inner side of the 3 is fixedly connected to the second extension plate 416. The bottom center of the second extension plate 416 is fixedly connected to the limiting plate 417. The lower inner outer wall of the square fixed column 41 is fixedly connected to the third extension plate 42. The top of the third extension plate 42 is fixedly connected to the first column 421 and the second column 426. The upper outer wall of the first column 421 is rotatably connected to the rotating column 422. The upper and lower outer walls of the rotating column 422 are both fixedly connected to the turntable 423. The outer wall of the turntable 423 is fixedly connected to multiple solenoid valves 424. The middle outer wall of the rotating column 422 is fixedly connected to the circular gear 425. The top of the second column 426 is rotatably connected to the first gear column 427. The first gear column 427 meshes with the circular gear 425.

[0044] like Figure 8 As shown, a rotating ring 43 is movably connected to the outer wall of the limiting post 412. The top and bottom of the rotating ring 43 are both inclined. A rack 431 is fixedly connected to the outer wall of the middle end of the rotating ring 43. The rack 431 meshes with the first gear post 427. The top and bottom surfaces of the rotating ring 43 are both provided with inclined surfaces 432. The inclined surfaces 432 fit with the outer walls of multiple conical rotating wheels 415 and are in contact with each other. A second gear post 44 is meshed between the racks 431 on both sides. The second gear post 44 is fixedly connected to the bottom of the second rotating rod 144. The bottom of 44 is fixedly connected to a third rotating rod 441. The third rotating rod 441 is fixedly connected to a circular fixed post 442 through the third extension plate 42. The circular fixed post 442 is located at the top of the limiting plate 417. The top of the sliding bending rod 413 is fixedly connected to an extension rod 45. The end of the extension rod 45 away from the sliding bending rod 413 is fixedly connected to a fixed block 451. The extension rod 45 passes through the triangular diverter 151. The outer wall of the fixed block 451 is fixedly connected to a lower cleaning ring 46. The lower cleaning ring 46 is slidably connected to the outer wall of the filter chamber 1.

[0045] Therefore, when it is necessary to filter fire-retardant coatings, such as Figures 2-4As shown, during the preparation stage, the staff first connects the inlet 11 to the paint conveying equipment. At this time, the entire equipment starts to work. The conveying equipment transports the fireproof paint from the inlet 11 to the first chamber 3 in the filter chamber 1. At this time, driven by the motor 14, the first rotating rod 141, the telescopic rod 142 and the second rotating rod 144 rotate. The second rotating rod 144 will drive the stirring rod 143 to rotate. At this time, the fireproof paint in the first chamber 3 is stirred by the stirring rod 143 and then filtered by the filter screen 21, and then flows into the second chamber 31.

[0046] It should be noted that the bottom of the stirring rod 143 is curved. After the fire retardant coating is blocked by the filter screen 21, some large fire retardant coating particles are blocked. Under the pressure between the curved bottom of the stirring rod 143 and the filter screen 21, some of the large fire retardant coating particles are squeezed into smaller size. The other part of the fire retardant coating on the top of the filter screen 21 is lifted and transported upward by the inclined stirring rod 143. At this time, the stirring rod 143 can clean the filter screen 21 to prevent the filter screen 21 from becoming blocked.

[0047] Simultaneously, the rotation of the second rotating rod 144 will also drive the second gear column 44, the third rotating rod 441, and the circular fixed column 442 to rotate. The second gear column 44, driven by the rack 431, will then drive the two rotating rings 43 to rotate. At this time, under the rotation of the rotating rings 43, the position where the inclined surface 432 is in contact with the conical rotating wheel 415 will rotate from a lower position to a higher position (and vice versa), and at the same time drive the sliding bending rod 413 to move upward (and downward). At this time, the sliding bending rod 413 will also drive the extension rod 45, the fixed block 451, and the lower cleaning ring 46 to move up and down together. Meanwhile, as the sliding bending rod 413 moves up and down, it will also drive the circular fixed column 442, the third rotating rod 441 and the second gear column 44 to move up and down together. As the second gear column 44 moves up and down, it will also drive the second rotating rod 144 to move up and down together. At this time, the second rotating rod 144 will cause the telescopic rod 142 to extend and retract. The second rotating rod 144 will also drive the upper cleaning ring 2, the filter screen 21 and the stirring rod 143 to move up and down together. At this time, the upper cleaning ring 2 and the lower cleaning ring 46, which move up and down at the same speed, scrape off the fireproof coating on the inner wall of the filter chamber 1 to prevent subsequent cross-contamination of the coating.

[0048] Furthermore, during the rotation of rack 431, it also drives the first gear column 427 around it to rotate, which in turn drives the sprocket 425 to rotate. The rotation of sprocket 425, in turn, drives the rotating column 422 and turntable 423 to rotate. Turntable 423, in turn, drives multiple solenoid valves 424 around it to rotate. After the fire-retardant coating flows into the second chamber 31, it is diverted by the triangular diverter 151, flowing into the separation covers 16 on both sides and onto the metal cover 162. At this time, when the solenoid valve 424 rotates to the side of the separation cover 16, it is squeezed, causing the solenoid valve 424 to activate. The solenoid bar 161... The metal cover 162 generates magnetism, attracting metal debris from the fire-retardant coating flowing in chamber 32. Simultaneously, the rotation of multiple solenoid valves 424 intermittently attracts the solenoid strip 161, causing the metal debris to remain on the metal cover 162 during attraction and slide down a short distance when not being attracted. When it reaches the lower end of the metal cover 162, it is attracted again by the metal cover 162, and the metal debris is stored at the bottom of the metal cover 162. At this time, the fire-retardant coating flows from chamber 32 to the discharge pipe 12 and is discharged, while the metal debris is stored inside the metal cover 162. This achieves the cleaning of metal debris in the fire-retardant coating.

[0049] Example 2

[0050] This embodiment provides a method for using a filter machine applied to the production of fire-retardant coatings, including the following steps:

[0051] S1. First, the fireproof coating slurry is transported from the inlet 11 to the filter chamber 1. After being stirred and cleaned by the stirring rod 143, it is continued to be transported into the second chamber 31.

[0052] S2. Then, the cleaning component 4 drives the upper cleaning ring 2 and the lower cleaning ring 46 to clean the inner wall of the filter chamber 1.

[0053] S3, and under the drive of the cleaning component 4, the solenoid valve 424 intermittently generates magnetism, causing the fireproof coating to separate from the metal debris;

[0054] S4, and finally conveyed out through the discharge pipe 12 of the three chambers 32 on both sides.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter for producing fire-retardant coatings, comprising a filter chamber (1), characterized in that: The upper outer wall of the filter chamber (1) is provided with a feed inlet (11), the bottom of the filter chamber (1) is fixedly connected to a fixed base (13), the outer wall of the fixed base (13) is fixedly connected to a discharge pipe (12), the top of the filter chamber (1) is fixedly connected to a motor (14), the output end of the motor (14) is fixedly connected to a first rotating rod (141), the bottom of the first rotating rod (141) is fixedly connected to a telescopic rod (142), the lower inner wall of the filter chamber (1) is fixedly connected to a transmission chamber (15), and a cleaning component (4) is provided in the transmission chamber (15). The inner wall of the filter chamber (1) is slidably connected to an upper cleaning ring (2), and the inner wall of the upper cleaning ring (2) is detachably connected to a filter screen (21); A triangular diverter (151) is fixedly connected to the top of the transmission chamber (15), and separation covers (16) are fixedly connected to both sides of the transmission chamber (15). The cleaning component (4) is located between the two separation covers (16).

2. The filter machine for producing fire-retardant coatings according to claim 1, characterized in that: The filter chamber (1) includes a first chamber (3), a second chamber (31) and a third chamber (32). The first chamber (3) is located at the top of the filter screen (21), the second chamber (31) is located at the bottom of the filter screen (21), and the third chamber (32) is located inside the separation cover (16).

3. A filter machine for producing fire-retardant coatings according to claim 2, characterized in that: The bottom of the telescopic rod (142) is fixedly connected to a second rotating rod (144), which passes through the triangular diverter (151). Multiple stirring rods (143) are fixedly connected to the outer wall of the second rotating rod (144), and the stirring rods (143) are located at the top of the filter screen (21).

4. A filter for producing fire-retardant coatings according to claim 3, characterized in that: Multiple electromagnetic strips (161) are fixedly connected to one side of the outer wall of the separation cover (16), and multiple metal covers (162) are fixedly connected to the inner wall of the separation cover (16). The positions of the metal covers (162) are matched with the positions of the electromagnetic strips (161).

5. A filter machine for producing fire-retardant coatings according to claim 4, characterized in that: The cleaning assembly (4) includes a square fixed column (41), which is fixedly connected to the inner wall of the transmission chamber (15). An extension plate (411) is fixedly connected to the middle end of the square fixed column (41). A limiting column (412) is fixedly connected to the top of the extension plate (411) at the end away from the square fixed column (41). A sliding bending rod (413) is slidably connected to the inner side of the square fixed column (41). The sliding bending rod (413) passes through the square fixed column (41). A plurality of vertical rods (414) are fixedly connected to the bottom of the upper bent part of the sliding bending rod (413). A conical wheel (415) is rotatably connected between the plurality of vertical rods (414). A vertical rod (414) and a conical wheel (415) are also provided at the top of the extension plate (411) at the end near the square fixed column (41).

6. A filter for producing fire-retardant coatings according to claim 5, characterized in that: The lower inner side of the sliding bending rod (413) is fixedly connected to the second extension plate (416), and the bottom of the center position of the second extension plate (416) is fixedly connected to the limiting plate (417). The outer wall of the lower inner side of the square fixed column (41) is fixedly connected to the third extension plate (42). The top of the third extension plate (42) is fixedly connected to the first column (421) and the second column (426). The outer wall of the upper end of the first column (421) is rotatably connected to the rotating column (422). The outer walls of the upper and lower ends of the rotating column (422) are fixedly connected to the turntable (423). The outer wall of the turntable (423) is fixedly connected to multiple solenoid valves (424).

7. A filter for producing fire-retardant coatings according to claim 6, characterized in that: A spur gear (425) is fixedly connected to the outer wall of the middle end of the rotating column (422), and a first gear column (427) is rotatably connected to the top of the second column (426). The first gear column (427) meshes with the spur gear (425).

8. A filter for producing fire-retardant coatings according to claim 7, characterized in that: A rotating ring (43) is movably connected to the outer wall of the limiting post (412). The top and bottom of the rotating ring (43) are both inclined. A rack (431) is fixedly connected to the outer wall of the middle end of the rotating ring (43). The rack (431) meshes with the first gear post (427). The top and bottom surfaces of the rotating ring (43) are provided with inclined surfaces (432). The inclined surfaces (432) fit with the outer walls of multiple conical rotating wheels (415) and are in contact with each other. A second gear post (44) meshes between the racks (431) on both sides. The second gear post (44) is fixedly connected to the bottom of the second rotating rod (144).

9. A filter machine for producing fire-retardant coatings according to claim 8, characterized in that: The bottom of the second gear column (44) is fixedly connected to the third rotating rod (441). The third rotating rod (441) is fixedly connected to a circular fixed column (442) through the third extension plate (42). The circular fixed column (442) is located at the top of the limiting plate (417). The top of the sliding bending rod (413) is fixedly connected to the extension rod (45). The end of the extension rod (45) away from the sliding bending rod (413) is fixedly connected to the fixing block (451). The extension rod (45) passes through the triangular diverter (151). The outer wall of the fixing block (451) is fixedly connected to the lower cleaning ring (46). The lower cleaning ring (46) is slidably connected to the outer wall of the filter chamber (1).

10. A method of using a filter machine for producing fire-retardant coatings, based on the filter machine for producing fire-retardant coatings according to any one of claims 1-9, characterized in that, The methods and steps include the following: S1. First, the fireproof coating slurry is transported from the inlet (11) to the filter chamber (1). After being stirred and cleaned by the stirring rod (143), it is transported to the second chamber (31). S2. Then, the cleaning component (4) drives the upper cleaning ring (2) and the lower cleaning ring (46) to clean the inner wall of the filter chamber (1); S3, and under the drive of the cleaning component (4), the solenoid valve (424) intermittently generates magnetism, so that the fireproof coating is separated from the metal debris; S4, and finally conveyed out through the discharge pipe (12) of the three chambers (32) on both sides.

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