A drum-type multi-layer filtration device for casting coating liquid

Abstract

The present invention discloses a drum-type multi-layer filtering device for casting coating liquid, which relates to the technical field of filtering devices and includes a screening box. A filtering mechanism is arranged inside the screening box, and the filtering mechanism includes a rotating filtering cylinder, a pulley II, a pulling plate I, and a pulling plate II. A moving mechanism is arranged outside the screening box, and the moving mechanism includes a connecting plate, a threaded pipe, and a linkage plate. It can, through the settings of the pulling plate I, the pulling plate II, and the moving mechanism, when the material filtering is completed, the linkage plate moves to drive the pulling plate I and the pulling plate II away from the screening box respectively through the moving slide rail and the baffle, so that the bottoms of the fixed filtering cylinder and the rotating filtering cylinder are opened, and thus the materials in the fixed filtering cylinder and the rotating filtering cylinder slide to the bottom of the screening box, completing the collection of the materials in the fixed filtering cylinder and the rotating filtering cylinder. Through this linkage mechanism, it effectively avoids the materials from being squeezed, resulting in the blockage of the filtering holes by the materials, and further reducing the filtering effect of the filtering screening cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and specifically to a drum-type multi-layer filtering device for casting coating liquid. Background Art

[0002] A filtering device is a device that uses a porous filter to achieve solid-liquid separation. Filtering devices are applied in departments such as chemical industry, petroleum, pharmacy, light industry, food, ore dressing, coal, and water treatment. A filtering device is a new type of filtering system with novel structure, small volume, simple and flexible operation, high efficiency, airtight operation, and is a multi-purpose filtering device with strong applicability.

[0003] According to the patent with the patent number CN217247291U, a drum-type slurry filter is disclosed, which includes a frame. A driving motor is fixedly arranged on the frame. A rotating shaft is fixedly arranged at the end of the driving motor shaft. Two driving sprockets are fixedly arranged on the rotating shaft. A filter drum is also arranged inside the frame. Driven sprockets are fixedly arranged at both ends of the filter drum. A chain is drivingly arranged between the corresponding driving sprocket and the driven sprocket. The filter drum is suspended on the frame through two chains.

[0004] However, during the implementation of the above solution, in industries such as casting, traditional Chinese medicine, and construction, it is necessary to separate large and small particles of mixed materials through filtration. Generally, the materials are placed in a filtering and screening cylinder, and then the materials in it are continuously tumbled by rotating the screening cylinder to achieve the filtering effect. After the screening and filtering work is completed, large particle materials separated out will remain in the screening and filtering cylinder. Currently, the large particle materials in the screening and filtering cylinder are moved to the outside by pushing a scraping plate for collection. However, during the process of pushing by the scraping plate, the materials are extremely likely to be squeezed, resulting in blockage of the filter holes. In the long run, the filtering effect of the screening and filtering cylinder will be reduced. Therefore, we provide a drum-type multi-layer filtering device for casting coating liquid to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a drum-type multi-layer filtering device for casting coating liquid.

[0006] To achieve the above object, the present invention provides the following technical solution: A drum-type multi-layer filtration device for casting coating liquid, comprising a screening box, wherein a filtration mechanism is arranged inside the screening box, and the filtration mechanism includes a rotating filtration cylinder, a pulley II, a pulling plate I and a pulling plate II. A moving mechanism is arranged outside the screening box, and the moving mechanism includes a connecting plate, a threaded pipe and a linkage plate. A threaded rod is rotatably connected to the outer surface of the linkage plate, and the threaded rod is in threaded connection with the threaded pipe. A moving slide rail is fixedly connected to the outer surface of the linkage plate. A slider is fixedly connected to the outer surface of the pulling plate I, and the moving slide rail is slidably connected to the outer surface of the slider. A baffle is fixedly connected to the outer surface of the linkage plate, and the baffle is fixedly connected to the pulling plate II. A feeding mechanism is arranged outside the screening box, and the feeding mechanism includes a feeding cylinder.

[0007] Further, the stirring plate is wavy or a hook plate is arranged at the end of the stirring plate. When the drum-type multi-layer filtration device in the present invention is working, the materials in the rotating filtration cylinder are tumbled by rotating the rotating filtration cylinder to achieve the first filtration. The materials after the first filtration slide between the fixed filtration cylinder and the rotating filtration cylinder. The rotation of the rotating filtration cylinder drives the four stirring plates to rotate to tumble the materials between the fixed filtration cylinder and the rotating filtration cylinder. The stirring plate is set to be wavy or a hook plate is arranged at the end of the stirring plate, which can lift and throw out the materials, further enhancing the turning of the stirring plate on the materials, accelerating the filtration rate of the fixed filtration cylinder on the materials, and preventing the materials from clogging and piling up. The stirring plate is hollow, an air passage is arranged inside the stirring plate, the air passage is connected to an external air source, and a plurality of air holes are arranged on the outer surface of the stirring plate, and all the air holes are communicated with the air passage. In order to further improve the turning effect of the stirring plate on the materials, high-pressure gas is provided to the air passage inside the stirring plate through the external air source, and the high-pressure gas is blown out through the plurality of air holes to make the materials tumble, thereby further enhancing the turning of the stirring plate on the materials, accelerating the filtration rate of the fixed filtration cylinder on the materials, and preventing the materials from clogging and piling up. A positioning block is arranged on the moving slide rail, and the positioning block cooperates with the slider and is used for positioning the slider. When it is necessary to collect the materials in the fixed filtration cylinder and the rotating filtration cylinder, rotate the rotating filtration cylinder until the slider moves to contact with the positioning block, at this time, the rotating filtration cylinder stops rotating, and the slider is just in the position corresponding to the moving slide rail. Rotate the threaded pipe to drive the threaded rod to move, the movement of the threaded rod drives the linkage plate to move, and the movement of the linkage plate drives the pulling plate I and the pulling plate II to move away from the screening box through the moving slide rail and the baffle respectively.

[0008] Furthermore, the material of the stirring plate is low-carbon steel that has been subjected to gas carburizing treatment and ion nitriding treatment successively. The specific steps of the gas carburizing treatment and ion nitriding treatment include: S1: Fix the low-carbon steel raw material in a high-temperature furnace tank; S2: Energize the resistance wire in the high-temperature furnace tank to heat the furnace body at a high temperature until the temperature in the furnace reaches 900 - 950 °C; S3: Simultaneously introduce methanol and ethyl acetate into the high-temperature furnace tank. The pyrolysis gas of methanol can be used as a carrier gas, and the pyrolysis gas of ethyl acetate is used as an enriching gas to provide active carbon atoms; S4: Monitor and control the carbon potential with a dew point meter or an infrared analyzer; S5: Pre-cool, quench, and temper the carburized low-carbon steel, so that its surface hardness reaches HRC58 - 62 and the core hardness reaches HRC35 - 45; S6: Perform tempering treatment on the carburized workpiece, then put it into a nitriding container, evacuate the inside of the container and introduce ammonia until the pressure reaches 1 - 10 mmHg; S7: Apply a DC voltage of 500 - 600 V to make the ionized nitrogen ions move directionally towards the workpiece and penetrate into the workpiece surface to form a nitriding layer. The surface hardness of the nitrided workpiece reaches HRC65 - 70. Since the stirring plate tumbles the material as it rotates with the rotating filter drum, its surface constantly impacts and rubs against the material. After long-term operation, the stirring plate is prone to wear and even breakage. Therefore, high requirements are placed on the strength and surface wear resistance of the stirring plate; the low-carbon steel workpiece processed into the stirring plate is successively subjected to gas carburizing treatment and ion nitriding treatment, so as to form a carburized layer and a nitriding layer on the surface of the workpiece in sequence, thereby improving the hardness and surface wear resistance of the workpiece, making the stirring plate not easily worn and broken during the long-term impact and friction with the material, extending its service life, and enhancing the screening effect of the material.

[0009] Furthermore, the screening box is rotatably connected to the outer surface of the rotating filter drum. A first pulley is fixedly connected to the outer surface of the rotating filter drum. The first pulley is drivingly connected to a second pulley through a belt. The rotation of the second pulley will drive the first pulley to rotate through the belt, and the rotation of the first pulley will drive the rotating filter drum to rotate. The rotation of the rotating filter drum will cause the material in the rotating filter drum to tumble, thus achieving the first filtration.

[0010] Furthermore, a fixing plate is fixedly connected to the outer surface of the rotating filter drum. An arc-shaped slide rail is slidably connected to the outer surface of the fixing plate. The arc-shaped slide rail is fixedly connected to the outer surface of the screening box through two fixing blocks. Through the setting of the arc-shaped slide rail, when the rotating filter drum rotates, both the fixing plate and the slider slide on the inner wall of the arc-shaped slide rail. The setting of the arc-shaped slide rail will continuously keep the first pull plate closed with the rotating filter drum.

[0011] Further, two first sliding bars are fixedly connected to the outer surface of the first pull-out plate. Two sliding grooves adapted to the first sliding bars are formed in the inner wall of the rotating filter cylinder. The two first sliding bars are respectively slidably connected to the rotating filter cylinder through the sliding grooves of the two rotating filter cylinders. Through the arrangement of the two first sliding bars, the sliding stability between the first pull-out plate and the rotating filter cylinder is increased. After the first pull-out plate moves and closes with the rotating filter cylinder, the first pull-out plate and the rotating filter cylinder form a complete filtering and screening cylinder.

[0012] Further, a fixed filter cylinder is fixedly connected to the inner wall of the screening box. Four stirring plates are fixedly connected to the outer surface of the rotating filter cylinder. The second pull-out plate penetrates through the outer surface of the screening box and is slidably connected to the screening box. Two second sliding bars are fixedly connected to the outer surface of the second pull-out plate. Two sliding grooves adapted to the second pull-out plate are formed in the inner wall of the fixed filter cylinder. The two second sliding bars are respectively slidably connected to the fixed filter cylinder through the sliding grooves of the two fixed filter cylinders. The rotation of the rotating filter cylinder will drive the four stirring plates to rotate to tumble the materials between the fixed filter cylinder and the rotating filter cylinder, accelerating the filtering rate of the fixed filter cylinder for the materials.

[0013] Further, the connecting plate is fixedly connected to the outer surface of the screening box. The connecting plate is rotatably connected to the outer surface of the threaded pipe. A first gear is fixedly connected to the outer surface of the threaded pipe. The outer circumferential surface teeth of the first gear are meshed with a second gear. A limiting rod is fixedly connected between the connecting plate and the screening box. The linkage plate is slidably connected to the outer surface of the limiting rod. Through the arrangement of the two second sliding bars, the sliding stability between the second pull-out plate and the fixed filter cylinder is increased. After the second pull-out plate moves and closes with the fixed filter cylinder, the second pull-out plate and the fixed filter cylinder form a complete filtering and screening cylinder.

[0014] Further, the rotating filter cylinder is rotatably connected to the outer surface of the feeding cylinder. A feeding port is fixedly communicated with the outer surface of the feeding cylinder. A spiral conveying blade is rotatably connected to the inner wall of the feeding cylinder. Workers can put materials into the feeding port and convey them to the rotating filter cylinder through the spiral conveying blade.

[0015] Further, an annular crushing blade or a plurality of crushing teeth are arranged on the inner side wall of the filter holes of the rotating filter cylinder and the fixed filter cylinder. The crushing blade is detachably arranged. Since the drum-type multi-layer filtering device in the present invention is prone to blockage of materials in the filter holes of the rotating filter cylinder and the fixed filter cylinder after working for a period of time, an annular blade or a plurality of crushing teeth are arranged on the inner side wall of the filter holes of the rotating filter cylinder and the fixed filter cylinder, which can be used to crush and cut the materials passing through the filter holes so that they can smoothly pass through the filter holes and prevent the materials from being blocked in the filter holes.

[0016] Further, the diameters of the filter holes of the rotating filter cylinder and the fixed filter cylinder gradually increase from the inside to the outside, that is, the cross-section of the filter hole is a trapezoidal hole with a smaller inner side and a larger outer side. Since the drum-type multi-layer filtering device in the present invention is prone to clogging of the filter holes of the rotating filter cylinder and the fixed filter cylinder after working for a period of time, the cross-section of the filter hole is designed as a trapezoidal hole with a smaller inner side and a larger outer side, so that the material passing through the filter hole can smoothly discharge from the filter hole. At the same time, combined with the annular crushing blade or several crushing teeth arranged on the inner side wall of the filter hole, it can be used to crush and cut the material passing through the filter hole, so that it can smoothly pass through the filter hole and prevent the filter hole from being blocked by accumulation.

[0017] Further, it further includes a gas blowing device. The gas blowing device is arranged on the connecting plate. The gas blowing device includes an air pump, a main air pipe, a bronchus and an L-shaped plate. The air pump is arranged on the connecting plate. The air pump is connected to the bronchus through the main air pipe. The main air pipe is a telescopic flexible pipe. The bronchus is installed on the L-shaped plate. The L-shaped plate is fixedly connected to the linkage plate, so that the bronchus extends into the rotating filter cylinder. The bronchus includes multiple first bronchi that blow air upward and multiple second bronchi that blow air downward. Since the drum-type multi-layer filtering device in the present invention is prone to clogging of the filter holes of the rotating filter cylinder and the fixed filter cylinder after working for a period of time, the first bronchi and the second bronchi of the gas blowing device can be aligned with the filter holes of the rotating filter cylinder to blow air, and the high-pressure air flow can also pass through the rotating filter cylinder to blow air to the filter holes of the fixed filter cylinder, so as to remove the blocked material in the filter holes through the high-pressure gas. After the material filtering is completed, the air pump is turned on, and the high-pressure gas is ejected through the bronchus. At the same time, the rotating filter cylinder continues to rotate idly, and the first bronchi and the second bronchi can be used to blow air and remove impurities from the filter holes of the rotating filter cylinder and the fixed filter cylinder in the circumferential direction. At the same time, since the bronchus is installed on the linkage plate through the L-shaped plate, the first bronchi and the second bronchi can move back and forth horizontally along with the linkage plate under the drive of the threaded pipe, so as to blow air and remove impurities from the filter holes of the rotating filter cylinder and the fixed filter cylinder in the axial direction.

[0018] Compared with the prior art, the drum-type multi-layer filtering device has the following beneficial effects:

[0019] 1. Through the settings of the first sliding plate, the second sliding plate and the moving mechanism, when the material filtration is completed, the threaded pipe is rotated to drive the threaded rod to move. The movement of the threaded rod drives the linkage plate to move. The movement of the linkage plate drives the first sliding plate and the second sliding plate away from the screening box through the moving slide rail and the baffle respectively, so that the bottoms of the fixed filter cylinder and the rotating filter cylinder are opened, and the materials in the fixed filter cylinder and the rotating filter cylinder slide to the bottom of the screening box, completing the collection of the materials in the fixed filter cylinder and the rotating filter cylinder. Through this linkage mechanism, it is effectively avoided that the materials are squeezed, resulting in the blockage of the filter holes and the reduction of the filtration effect of the filter screening cylinder.

[0020] 2. Through the settings of the filtering mechanism and the feeding mechanism, the material is put into the feeding port and conveyed to the rotating filter cylinder through the spiral conveying blades. By rotating the rotating filter cylinder, the materials in the rotating filter cylinder are tumbled to achieve the first filtration. The materials after the first filtration slide between the fixed filter cylinder and the rotating filter cylinder. The rotation of the rotating filter cylinder drives the four stirring plates to rotate to tumble the materials between the fixed filter cylinder and the rotating filter cylinder, accelerating the filtration rate of the fixed filter cylinder for the materials. Since the filter holes of the rotating filter cylinder are larger than those of the fixed filter cylinder, the materials are simply filtered through the rotating filter cylinder and then secondarily and carefully filtered through the fixed filter cylinder. Through the multi-layer filtration method, the filtration rate of the materials is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 is a three-dimensional structural schematic diagram inside the screening box of the present invention;

[0023] Figure 3 is a split structural schematic diagram of the present invention;

[0024] Figure 4 is a partial split structural schematic diagram of the filtering mechanism of the present invention;

[0025] Figure 5 is a three-dimensional structural schematic diagram of the moving mechanism of the present invention;

[0026] Figure 6 is a three-dimensional structural schematic diagram of the feeding mechanism of the present invention.

[0027] In the figure: 1. Screening box; 2. Filtering mechanism; 201. Fixed filter cylinder; 202. Rotating filter cylinder; 203. Pulley one; 204. Pulley two; 205. Stirring plate; 206. Fixed plate; 207. Pulling plate one; 208. Slide bar one; 209. Arc-shaped slide rail; 210. Pulling plate two; 211. Slide bar two; 212. Slide block; 3. Moving mechanism; 31. Connecting plate; 32. Threaded tube; 33. Gear one; 34. Gear two; 35. Threaded rod; 36. Linking plate; 37. Limiting rod; 38. Moving slide rail; 39. Baffle; 4. Feeding mechanism; 41. Feeding tube; 42. Screw conveyor blade; 43. Feeding port. Detailed implementation mode

[0028] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] This embodiment provides a drum-type multi-layer filtering device for casting coating liquid, which effectively avoids the material being squeezed, resulting in the blockage of the filter holes and thus reducing the filtering effect of the filtering and screening cylinder.

[0030] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a drum-type multi-layer filtering device for casting coating liquid, including a screening box 1. A filtering mechanism 2 is arranged inside the screening box 1. The filtering mechanism 2 includes a rotating filter cylinder 202, a pulley two 204, a pulling plate one 207 and a pulling plate two 210. The filter holes of the rotating filter cylinder 202 are larger than those of the fixed filter cylinder 201. The material is simply filtered through the rotating filter cylinder 202 to screen out super-large particles, and then secondary fine filtering is carried out through the fixed filter cylinder 201 to separate unqualified large particles, so as to accelerate the filtering rate of the material through multi-layer filtering.

[0031] The stirring plate 205 is wavy or hook plates are provided at the ends of the stirring plate 205; the stirring plate 205 is hollow, an air duct is provided inside the stirring plate 205, the air duct is connected to an external air source, and a plurality of air holes are provided on the outer surface of the stirring plate 205, and the air holes are all communicated with the air duct; a positioning block is provided on the moving slide rail 38, and the positioning block cooperates with the slider 212 and is used for positioning the slider 212. When the drum-type multi-layer filtering device in the present invention is working, the materials in the rotating filtering cylinder are tumbled by rotating the rotating filtering cylinder to achieve the first filtration. The materials after the first filtration slide between the fixed filtering cylinder and the rotating filtering cylinder. The rotation of the rotating filtering cylinder drives the four stirring plates to rotate to tumble the materials between the fixed filtering cylinder and the rotating filtering cylinder. The stirring plate is set to be wavy or hook plates are provided at the ends of the stirring plate, which can lift and throw out the materials, further enhancing the turning of the stirring plate on the materials, accelerating the filtering rate of the fixed filtering cylinder for the materials, and preventing the materials from clogging and piling up. In order to further improve the turning effect of the stirring plate on the materials, high-pressure gas is provided to the air duct inside the stirring plate through an external air source, and the high-pressure gas is blown out through a plurality of air holes to make the materials tumble, thereby further enhancing the turning of the stirring plate on the materials, accelerating the filtering rate of the fixed filtering cylinder for the materials, and preventing the materials from clogging and piling up. When it is necessary to collect the materials in the fixed filtering cylinder and the rotating filtering cylinder, when the rotating filtering cylinder is rotated and the slider moves to contact the positioning block, the rotating filtering cylinder stops rotating, and the slider is just in a position corresponding to the moving slide rail. Rotating the threaded tube drives the threaded rod to move, and the movement of the threaded rod drives the linkage plate to move. The movement of the linkage plate drives the pull plate one and the pull plate two away from the screening box through the moving slide rail and the baffle plate respectively.

[0032] The material of the stirring plate 205 is low-carbon steel that has been subjected to gas carburizing treatment and ion nitriding treatment, wherein the specific steps of the gas carburizing treatment and ion nitriding treatment include: S1: fixing the low-carbon steel raw material in a high-temperature furnace tank; S2: energizing the resistance wire in the high-temperature furnace tank to heat the furnace tank body to a high temperature of 900-950°C; S3: introducing methanol and ethyl acetate into the high-temperature furnace tank at the same time, wherein the thermal cracking gas of methanol can be used as a carrier gas, and the thermal cracking gas of ethyl acetate can be used as an enriched gas to provide active carbon atoms; S4: using a dew point meter Or infrared analyzer is used to monitor and control the carbon potential; S5: pre-cooling, quenching and low-temperature tempering are carried out on the low-carbon steel after carburizing, and the surface hardness reaches HRC58-62, and the core hardness reaches HRC35-45; S6: the workpiece after carburizing is subjected to tempering treatment, and then placed in a nitriding container, the inside of the container is evacuated and ammonia is introduced to a pressure of 1-10mmHg; S7: a DC voltage of 500-600V is introduced to make the ionized nitrogen ions move toward the workpiece in a directional manner and penetrate into the surface of the workpiece to form a nitrided layer. The surface hardness of the workpiece after nitriding reaches HRC65-70. Since the surface of the stirring plate 205 is constantly colliding and rubbing against the material during the process of turning the material with the rotation of the rotating filter cylinder 202, the stirring plate 205 is prone to wear or even break after long-term work, so very high requirements are placed on the strength and surface wear resistance of the stirring plate 205; the low-carbon steel workpiece processed into the stirring plate 205 is successively subjected to gas carburizing treatment and ion nitriding treatment, thereby forming a carburized layer and a nitrided layer on the surface of the workpiece in turn, thereby improving the hardness and surface wear resistance of the workpiece, making the stirring plate 205 less likely to wear and break during long-term collision and friction with the material, thereby extending the service life and enhancing the screening effect of the material.

[0033] The screening box 1 is rotatably connected to the outer surface of the rotating filter drum 202, and the outer surface of the rotating filter drum 202 is fixedly connected with a pulley 1 203, and the pulley 1 203 is transmission-connected to the pulley 2 204 through a belt, and the outer surface of the pulley 2 204 is provided with a motor, and the output end of the pulley 2 204 motor is fixedly connected to the pulley 2 204, and the motor of the pulley 2 204 is fixedly connected to the outer surface of the screening box 1 through a fixed block, and the motor of the pulley 2 204 is controlled to drive the pulley 2 204 to rotate, and the rotation of the pulley 2 204 will drive the pulley 1 203 to rotate through the belt, and the rotation of the pulley 1 203 will drive the rotating filter drum 202 to rotate, and the rotation of the rotating filter drum 202 will cause the material in the rotating filter drum 202 to tumble, thereby realizing the first filtration.

[0034] A fixing plate 206 is fixedly connected to the outer surface of the rotating filter cylinder 202. An arc-shaped slide rail 209 is slidably connected to the outer surface of the fixing plate 206. The arc-shaped slide rail 209 is fixedly connected to the outer surface of the screening box 1 through two fixing blocks. Through the arrangement of the arc-shaped slide rail 209, when the rotating filter cylinder 202 rotates, both the fixing plate 206 and the slider 212 slide on the inner wall of the arc-shaped slide rail 209. The arrangement of the arc-shaped slide rail 209 will continuously keep the first pull-out plate 207 closed with the rotating filter cylinder 202.

[0035] Two first slide bars 208 are fixedly connected to the outer surface of the first pull-out plate 207. Two chutes adapted to the first slide bars 208 are provided on the inner wall of the rotating filter cylinder 202. The two first slide bars 208 are respectively slidably connected to the rotating filter cylinder 202 through the chutes of the two rotating filter cylinders 202. Through the arrangement of the two first slide bars 208, the sliding stability of the first pull-out plate 207 and the rotating filter cylinder 202 is increased. When the first pull-out plate 207 moves and closes with the rotating filter cylinder 202, the first pull-out plate 207 and the rotating filter cylinder 202 form a complete filtering and screening cylinder.

[0036] A fixed filter cylinder 201 is fixedly connected to the inner wall of the screening box 1. Four stirring plates 205 are fixedly connected to the outer surface of the rotating filter cylinder 202. The second pull-out plate 210 penetrates through the outer surface of the screening box 1 and is slidably connected to the screening box 1. The rotation of the rotating filter cylinder 202 will drive the four stirring plates 205 to rotate to tumble the materials between the fixed filter cylinder 201 and the rotating filter cylinder 202, accelerating the filtering rate of the fixed filter cylinder 201 for the materials.

[0037] Two second slide bars 211 are fixedly connected to the outer surface of the second pull-out plate 210. Two chutes adapted to the second pull-out plate 210 are provided on the inner wall of the fixed filter cylinder 201. The two second slide bars 211 are respectively slidably connected to the fixed filter cylinder 201 through the chutes of the two fixed filter cylinders 201. Through the arrangement of the two second slide bars 211, the sliding stability of the second pull-out plate 210 and the fixed filter cylinder 201 is increased. When the second pull-out plate 210 moves and closes with the fixed filter cylinder 201, the second pull-out plate 210 and the fixed filter cylinder 201 form a complete filtering and screening cylinder.

[0038] See Figure 5, a moving mechanism 3 is arranged outside the screening box 1. The moving mechanism 3 includes a connecting plate 31, a threaded pipe 32 and a linkage plate 36. The connecting plate 31 is fixedly connected to the outer surface of the screening box 1. Reinforcing ribs are fixedly connected to the outer surface of the connecting plate 31. The reinforcing ribs of the connecting plate 31 are fixedly connected to the screening box 1, thereby increasing the connection stability of the connecting plate 31. The connecting plate 31 is rotatably connected to the outer surface of the threaded pipe 32. A first gear 33 is fixedly connected to the outer surface of the threaded pipe 32. The outer circumferential teeth of the first gear 33 are meshed with a second gear 34. A motor is arranged on the outer surface of the second gear 34. The output end of the motor of the second gear 34 is fixedly connected to the second gear 34. The motor controlling the second gear 34 drives the second gear 34 to rotate. The rotation of the second gear 34 drives the first gear 33 to rotate.

[0039] A threaded rod 35 is rotatably connected to the outer surface of the linkage plate 36. The threaded rod 35 is threadedly connected to the threaded pipe 32. A limiting rod 37 is fixedly connected between the connecting plate 31 and the screening box 1. The linkage plate 36 is slidably connected to the outer surface of the limiting rod 37. Through the threaded connection between the threaded pipe 32 and the threaded rod 35, when the threaded pipe 32 rotates, it will drive the linkage plate 36 to move through the threaded rod 35. Through the arrangement of the limiting rod 37, the stability of the linkage plate 36 during movement is increased, and the deviation of the linkage plate 36 during movement is avoided.

[0040] A moving slide rail 38 is fixedly connected to the outer surface of the linkage plate 36. A slider 212 is fixedly connected to the outer surface of the first pull-out plate 207. The moving slide rail 38 is slidably connected to the outer surface of the slider 212. When it is necessary to draw the first pull-out plate 207 away from the screening box 1, control the second pulley 204 to drive the rotating filter cylinder 202 to rotate, so that the rotation of the rotating filter cylinder 202 drives the slider 212 to move to a position corresponding to the moving slide rail 38. Rotate the threaded pipe 32 to drive the threaded rod 35 to move. The movement of the threaded rod 35 drives the linkage plate 36 to move. The movement of the linkage plate 36 drives the first pull-out plate 207 and the second pull-out plate 210 away from the screening box 1 respectively through the moving slide rail 38 and the baffle 39, so that the bottoms of the fixed filter cylinder 201 and the rotating filter cylinder 202 are opened.

[0041] A baffle 39 is fixedly connected to the outer surface of the linkage plate 36. The baffle 39 is fixedly connected to the second pull-out plate 210. Through the arrangement of the baffle 39, when the baffle 39 drives the second pull-out plate 210 to close with the fixed filter cylinder 201, the baffle 39 will closely adhere to the outer surface of the screening box 1, avoiding the material from drifting to the outside through the gap between the second pull-out plate 210 and the screening box 1 during the process.

[0042] See Figure 6, an input mechanism 4 is provided outside the screening box 1. The input mechanism 4 includes a material conveying cylinder 41. The rotating filter cylinder 202 is rotatably connected to the outer surface of the material conveying cylinder 41. Two support columns are fixedly connected to the outer surface of the material conveying cylinder 41 to support the material conveying cylinder 41 and increase the stability of the material conveying cylinder 41. A feeding port 43 is fixedly communicated with the outer surface of the material conveying cylinder 41. A spiral conveying blade 42 is rotatably connected to the inner wall of the material conveying cylinder 41. One end of the spiral conveying blade 42 penetrates through the inner wall of the material conveying cylinder 41 and is rotatably connected to the material conveying cylinder 41. An electric motor is arranged outside the spiral conveying blade 42, and the output end of the electric motor of the spiral conveying blade 42 is fixedly connected to the spiral conveying blade 42. By controlling the motor of the spiral conveying blade 42 to drive the spiral conveying blade 42 to rotate, the staff can put the material into the feeding port 43 and convey it to the rotating filter cylinder 202 through the spiral conveying blade 42.

[0043] In another embodiment, an annular crushing blade or several crushing teeth are arranged on the inner side walls of the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201, and the crushing blade is detachably arranged. Since in the drum-type multi-layer filtering device of the present invention, after working for a period of time, the material is easily blocked in the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201. Arranging an annular blade or several crushing teeth on the inner side walls of the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201 can be used to crush and cut the material passing through the filtering holes so that it can smoothly pass through the filtering holes and prevent the material from causing blockage in the filtering holes.

[0044] In another embodiment, the diameters of the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201 gradually increase from inside to outside, that is, the cross section of the filtering hole is a trapezoidal hole with a small inner side and a large outer side. Since in the drum-type multi-layer filtering device of the present invention, after working for a period of time, the material is easily blocked in the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201. Designing the cross section of the filtering hole as a trapezoidal hole with a small inner side and a large outer side enables the material passing through the filtering hole to smoothly discharge from the filtering hole. At the same time, combined with the annular crushing blade or several crushing teeth arranged on the inner side wall of the filtering hole, it can be used to crush and cut the material passing through the filtering hole so that it can smoothly pass through the filtering hole and prevent the filtering hole from being blocked by accumulation.

[0045] In another embodiment, it further includes a gas blowing device. The gas blowing device is arranged on the connecting plate. The gas blowing device includes an air pump, a main air pipe, a bronchus, and an L-shaped plate. The air pump is arranged on the connecting plate. The air pump is connected to the bronchus through the main air pipe. The main air pipe is a telescopic hose. The bronchus is installed on the L-shaped plate. The L-shaped plate is fixedly connected to the linkage plate, so that the bronchus extends into the rotating filter cylinder 202. The bronchus includes a plurality of first bronchi that blow air upward and a plurality of second bronchi that blow air downward. After the drum-type multi-layer filtering device in the present invention works for a period of time, materials are likely to block the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201. The first bronchi and the second bronchi of the gas blowing device can be aligned with the filtering holes of the rotating filter cylinder 202 to blow air, and the high-pressure air flow can also pass through the rotating filter cylinder 202 to blow air at the filtering holes of the fixed filter cylinder 201, so as to remove the materials blocked in the filtering holes through the high-pressure gas. After the material filtering is completed, the air pump is turned on, and the high-pressure gas is ejected through the bronchus. At the same time, the rotating filter cylinder 202 continues to rotate idly. The first bronchi and the second bronchi can blow air to remove impurities from the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201 in the circumferential direction. At the same time, since the bronchus is installed on the linkage plate through the L-shaped plate, the first bronchi and the second bronchi can move back and forth horizontally along with the linkage plate under the drive of the threaded pipe, so as to blow air to remove impurities from the filtering holes of the rotating filter cylinder 202 and the fixed filter cylinder 201 in the axial direction.

[0046] Working principle: During use, the materials are put into the feeding port 43 and conveyed to the rotating filter cylinder 202 through the spiral conveying blades 42. By rotating the rotating filter cylinder 202, the materials in the rotating filter cylinder 202 are tumbled to achieve the first filtration. The materials after the first filtration slide between the fixed filter cylinder 201 and the rotating filter cylinder 202. The rotation of the rotating filter cylinder 202 drives the four stirring plates 205 to rotate, tumbling the materials between the fixed filter cylinder 201 and the rotating filter cylinder 202, accelerating the filtration rate of the fixed filter cylinder 201 for the materials. The materials after multiple filtrations will slide to the bottom of the screening box 1. When it is necessary to collect the materials in the fixed filter cylinder 201 and the rotating filter cylinder 202, rotate the rotating filter cylinder 202 to move the slider 212 to a position corresponding to the moving slide rail 38. Rotate the threaded pipe 32 to drive the threaded rod 35 to move. The movement of the threaded rod 35 drives the linkage plate 36 to move. The movement of the linkage plate 36 drives the pull-out plate one 207 and the pull-out plate two 210 away from the screening box 1 through the moving slide rail 38 and the baffle 39 respectively, so that the bottoms of the fixed filter cylinder 201 and the rotating filter cylinder 202 are opened, and the materials in the fixed filter cylinder 201 and the rotating filter cylinder 202 slide to the bottom of the screening box 1, completing the collection of the materials in the fixed filter cylinder 201 and the rotating filter cylinder 202. Through this linkage mechanism, it effectively avoids the materials being squeezed, resulting in the blockage of the filter holes and further reducing the filtration effect of the filtration and screening cylinder.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drum-type multi-layer filtration device for casting coating liquid, comprising a screening box (1), characterized in that: Inside the screening box (1), a filtering mechanism (2) is provided. The filtering mechanism (2) includes a rotating filter cylinder (202), a second pulley (204), a first pulling plate (207), and a second pulling plate (210). Outside the screening box (1), a moving mechanism (3) is provided. The moving mechanism (3) includes a connecting plate (31), a threaded pipe (32), and a linkage plate (36). A threaded rod (35) is rotatably connected to the outer surface of the linkage plate (36). The threaded rod (35) is threadedly connected to the threaded pipe (32). A moving slide rail (38) is fixedly connected to the outer surface of the linkage plate (36). A slider (212) is fixedly connected to the outer surface of the first pulling plate (207). The moving slide rail (38) is slidably connected to the outer surface of the slider (212). A baffle (39) is fixedly connected to the outer surface of the linkage plate (36). The baffle (39) is fixedly connected to the second pulling plate (210). Outside the screening box (1), a feeding mechanism (4) is provided. The feeding mechanism (4) includes a feeding cylinder (41); Two first sliding strips (208) are fixedly connected to the outer surface of the first pulling plate (207). Two chutes adapted to the first sliding strips (208) are provided on the inner wall of the rotating filter cylinder (202). The two first sliding strips (208) are respectively slidably connected to the rotating filter cylinder (202) through the two chutes of the rotating filter cylinder (202); When the material filtering is completed, the threaded rod is driven to move by rotating the threaded pipe. The movement of the threaded rod drives the linkage plate to move. The movement of the linkage plate drives the first pulling plate away from the screening box through the moving slide rail, so that the bottom of the rotating filter cylinder is opened, and the material in the rotating filter cylinder slides to the bottom of the screening box, completing the collection of the material in the rotating filter cylinder; A fixed filter cylinder (201) is fixedly connected to the inner wall of the screening box (1). Four stirring plates (205) are fixedly connected to the outer surface of the rotating filter cylinder (202). The second pulling plate (210) penetrates through the outer surface of the screening box (1) and is slidably connected to the screening box (1). Two second sliding strips (211) are fixedly connected to the outer surface of the second pulling plate (210). Two chutes adapted to the second pulling plate (210) are provided on the inner wall of the fixed filter cylinder (201). The two second sliding strips (211) are respectively slidably connected to the fixed filter cylinder (201) through the two chutes of the fixed filter cylinder (201).

2. The drum - type multi - layer filtering device for casting coating liquid according to claim 1, wherein: The stirring plate (205) is wavy or a hook plate is provided at the end of the stirring plate (205); The stirring plate (205) is hollow, and an air passage is provided inside the stirring plate (205). The air passage is connected to an external air source. A plurality of air holes are provided on the outer surface of the stirring plate (205). The air holes are all communicated with the air passage; A positioning block is provided on the moving slide rail (38). The positioning block cooperates with the slider (212) and is used to position the slider (212).

3. The drum-type multi-layer filtration device for casting coating liquid according to claim 2, characterized in that: The material of the stirring plate (205) is low-carbon steel that has been subjected to gas carburizing treatment and ion nitriding treatment successively. The specific steps of the gas carburizing treatment and ion nitriding treatment include: S1: Fix the low-carbon steel raw material in a high-temperature furnace tank; S2: Energize the resistance wire in the high-temperature furnace tank to heat the furnace body at a high temperature until the temperature in the furnace reaches 900 - 950 °C; S3: Simultaneously introduce methanol and ethyl acetate into the high-temperature furnace tank. The pyrolysis gas of methanol can be used as a carrier gas, and the pyrolysis gas of ethyl acetate can be used as an enriching gas to provide active carbon atoms; S4: Monitor and control the carbon potential with a dew point meter or an infrared analyzer; S5: Pre-cool, quench, and perform low-temperature tempering on the carburized low-carbon steel, with the surface hardness reaching HRC58 - 62 and the core hardness reaching HRC35 - 45; S6: Perform quenching and tempering treatment on the carburized workpiece, then place it in a nitriding container, evacuate the inside of the container, and introduce ammonia until the pressure reaches 1 - 10 mmHg; S7: Apply a DC voltage of 500 - 600 V to make the ionized nitrogen ions move directionally towards the workpiece and penetrate into the workpiece surface to form a nitriding layer. The surface hardness of the nitrided workpiece reaches HRC65 - 70.

4. A drum-type multi-layer filtration device for casting coating liquid according to claim 1, characterized in that: The screening box (1) is rotatably connected to the outer surface of the rotating filter cylinder (202). A pulley one (203) is fixedly connected to the outer surface of the rotating filter cylinder (202), and the pulley one (203) is drivingly connected to a pulley two (204) through a belt.

5. A drum-type multi-layer filtration device for casting coating liquid according to claim 1, characterized in that: A fixing plate (206) is fixedly connected to the outer surface of the rotating filter cylinder (202). An arc-shaped slide rail (209) is slidably connected to the outer surface of the fixing plate (206), and the arc-shaped slide rail (209) is fixedly connected to the outer surface of the screening box (1) through two fixing blocks.

6. A drum-type multi-layer filtration device for casting coating liquid according to claim 1, characterized in that: The connecting plate (31) is fixedly connected to the outer surface of the screening box (1). The connecting plate (31) is rotatably connected to the outer surface of the threaded tube (32). A gear one (33) is fixedly connected to the outer surface of the threaded tube (32). The outer circumferential teeth of the gear one (33) are meshed with a gear two (34). A limiting rod (37) is fixedly connected between the connecting plate (31) and the screening box (1), and the linkage plate (36) is slidably connected to the outer surface of the limiting rod (37).

7. A drum-type multi-layer filtration device for casting coating liquid according to claim 1, characterized in that: The rotating filter cylinder (202) is rotatably connected to the outer surface of the feeding cylinder (41). A feeding port (43) is fixedly communicated with the outer surface of the feeding cylinder (41), and a spiral conveying blade (42) is rotatably connected to the inner wall of the feeding cylinder (41).

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