Automatic deslagging structure of spherical graphite filter press device

Abstract

The utility model provides a kind of automatic deslagging structure of spherical graphite pressure filtration device, belong to graphite processing technical field, the automatic deslagging structure of this spherical graphite pressure filtration device, it include: spherical filter cavity, rotary deslagging mechanism, pressure regulating assembly, support base and sealing cover body;Spherical filter cavity is hollow sphere, multiple circular filter holes are on spherical surface, and there is deslagging port in bottom;Rotary deslagging mechanism is in filter cavity, central rotating shaft vertically passes its geometric center, and upper end and lower end are rotatably connected with top and bottom;Scraping arm is fixed on rotating shaft and presents Y type, and branch end has arc-shaped scraper matched with the curvature of filter cavity inner wall;Driving gear is fixed in rotating shaft lower end, and is engaged transmission with motor output gear;Pressure regulating assembly includes cylindrical pressure cavity and piston push rod sliding in it, and piston push rod inner end extends into filter cavity;The utility model can solve the technical problems that graphite pressure filtration device in the prior art has low deslagging efficiency, incomplete cleaning leads to the technical problem of the decline of filtration precision.

Description

Technical Field

[0001] This utility model belongs to the field of graphite treatment technology, and specifically relates to an automatic slag discharge structure for a spherical graphite filter press. Background Technology

[0002] In the production and processing of graphite materials, the separation and filtration of graphite particles is a crucial process. Traditional graphite filter presses typically employ rectangular or cylindrical filter chambers, coupled with simple stirring or vibrating mechanisms for slag separation. However, these traditional devices have revealed numerous problems in practical applications. First, the rectangular filter chamber structure exhibits significant stress concentration, particularly at the corners, making it prone to structural fatigue and deformation, thus affecting the equipment's lifespan. Second, traditional linear or simple rotary slag discharge mechanisms often have cleaning dead zones, failing to effectively clean all internal surfaces of the filter chamber, leading to the accumulation of graphite particles and a gradual reduction in filtration accuracy and processing efficiency. Third, existing equipment's pressure control systems mostly employ a fixed pressure design, unable to automatically adjust according to different operating conditions and material characteristics, resulting in unstable filtration performance. Furthermore, traditional equipment has limited heat dissipation capacity, easily leading to overheating during continuous high-load operation, affecting equipment stability and filter media quality. Currently, graphite filter press equipment on the market is mainly used in the production of lithium battery anode materials, nuclear-grade graphite preparation, and special lubricant production. These applications have extremely high requirements for the purity and particle size distribution of graphite particles, and traditional equipment can hardly meet the increasingly stringent process requirements. Utility Model Content

[0003] In view of this, the present invention provides an automatic slag discharge structure for a spherical graphite filter press, which can solve the technical problems of low slag discharge efficiency, easy clogging, and incomplete cleaning leading to a decrease in filtration accuracy in existing graphite filter presses.

[0004] This utility model is implemented as follows:

[0005] This utility model provides an automatic slag discharge structure for a spherical graphite filter press, comprising: a spherical filter cavity, a rotary slag discharge mechanism, a pressure regulating component, a support base, and a sealing cover; the spherical filter cavity is a hollow spherical structure, with multiple circular filter holes evenly distributed on its spherical surface, and a slag discharge port at its bottom; the rotary slag discharge mechanism is disposed inside the spherical filter cavity, and includes a central rotating shaft, a scraper arm, and a drive gear, the central rotating shaft vertically passing through the geometric center of the spherical filter cavity, and the upper and lower ends of the central rotating shaft respectively connected to the spherical filter cavity via bearings. The top and bottom are rotatably connected. The scraper arm is fixedly connected to the central rotating shaft in a Y-shaped structure. The three branches of the scraper arm are respectively provided with arc-shaped scrapers. The curvature of the arc-shaped scrapers matches the curvature of the inner wall of the spherical filter cavity. The drive gear is fixedly connected to the lower end of the central rotating shaft. The drive gear meshes with the output gear of the motor set on the support base. The pressure regulating component includes a pressure chamber and a piston rod. The pressure chamber is cylindrical and fixedly connected to the side wall of the spherical filter cavity. The piston rod is slidably arranged in the pressure chamber. The inner end of the piston rod extends into the interior of the spherical filter cavity.

[0006] The technical advantages of the automatic slag discharge structure of the spherical graphite filter press provided by this utility model are as follows: Through the cooperation of the spherical filter chamber and the rotating slag discharge mechanism, continuous filtration and automatic slag discharge of graphite particles are achieved. The spherical structure has optimal stress uniformity, avoiding the stress concentration problem in traditional rectangular filters. The Y-shaped scraper arm structure ensures thorough cleaning of the inner wall of the spherical chamber, and the precise fit between the arc-shaped scraper and the spherical surface improves scraping efficiency. The pressure regulating component moderately compacts the filter media through a piston pusher, improving filtration accuracy and processing efficiency.

[0007] Based on the above technical solution, the automatic slag discharge structure of the spherical graphite filter press of this utility model can be further improved as follows:

[0008] The support base includes a base plate and support columns. The base plate is a rectangular steel plate structure, and support columns are vertically fixed at the four corners of the base plate. The tops of the four support columns are connected to each other through connecting beams to form a square support frame. The spherical filter cavity is fixedly installed on the square support frame by a clamping ring. The inner diameter of the clamping ring is slightly larger than the maximum diameter of the spherical filter cavity. The clamping ring is fastened to the equatorial position of the spherical filter cavity by adjusting bolts.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the square support frame structure provides a stable support foundation, and the symmetrical arrangement of the four support columns ensures the structural stability of the entire device. The combination design of the clamping ring and adjusting bolts enables reliable fixing and position adjustment of the spherical filter chamber, facilitating installation and maintenance. The rectangular steel plate structure of the base plate has good load-bearing capacity and can withstand various loads during equipment operation.

[0010] Furthermore, the sealing cover is a hemispherical structure, and an annular sealing groove is provided at the open end of the sealing cover. A rubber sealing ring is embedded in the annular sealing groove. The sealing cover is connected to the top of the spherical filter cavity through a hinge shaft. The axis of the hinge shaft is parallel to the diameter direction of the spherical filter cavity. The sealing cover rotates around the hinge shaft to realize the opening and closing action. An operating handle is provided on the outer surface of the sealing cover.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the hemispherical sealing cover and the spherical filter chamber form a complete sealed space, ensuring sealing performance during the filtration process. The hinge shaft connection enables convenient opening and closing of the sealing cover, improving operational efficiency. The cooperation between the annular sealing groove and the rubber sealing ring ensures a good sealing effect and prevents filter media leakage. The design of the operating handle facilitates manual operation and reduces labor intensity.

[0012] Furthermore, in the Y-shaped structure of the scraper arm, the angle between the three branches and the central rotating shaft is 120 degrees, the length of each branch is equal to 0.8 times the radius of the spherical filter cavity, the arc-shaped scraper is made of polyurethane material, the thickness of the arc-shaped scraper is 3 mm to 5 mm, and the gap between the arc-shaped scraper and the inner wall of the spherical filter cavity is controlled within the range of 1 mm to 2 mm.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the three branches are evenly distributed at 120 degrees, ensuring the dynamic balance of the scraper arm during rotation and reducing vibration and noise. The design of the branch length being 0.8 times the radius of the spherical filter cavity ensures the maximization of the scraping coverage area. The arc-shaped scraper made of polyurethane material has good elasticity and wear resistance, and the 1 to 2 mm gap control ensures the scraping effect while avoiding excessive wear.

[0014] Furthermore, the diameter of the circular filter holes in the spherical filter cavity is 0.5 mm to 1.5 mm, the circular filter holes are distributed on the spherical surface according to the latitude and longitude lines, the center distance between adjacent circular filter holes is 8 mm to 12 mm, and the spherical filter cavity is made of stainless steel 304 material.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the 0.5 to 1.5 mm filter pore size design effectively traps graphite particles while ensuring sufficient throughput. The warp and weft distribution pattern achieves uniform arrangement of filter pores, improving filtration efficiency. The 8 to 12 mm center distance ensures sufficient filtration area while maintaining the structural strength of the spherical filter cavity. 304 stainless steel material has excellent corrosion resistance and mechanical strength.

[0016] Furthermore, the inner diameter of the pressure chamber is 0.15 to 0.25 times the diameter of the spherical filter chamber. A conical pressure head is provided at the front end of the piston push rod, and the cone angle of the conical pressure head is 30 to 45 degrees. A pressure spring is connected to the rear end of the piston push rod, and the other end of the pressure spring abuts against the rear end wall of the pressure chamber. Under the action of the pressure spring, the piston push rod applies pressure towards the inside of the spherical filter chamber.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the ratio of the inner diameter of the pressure chamber to the diameter of the spherical filter chamber ensures a suitable pressure transmission effect. The 30 to 45 degree cone angle design of the conical pressure head can effectively compact the filter media without causing clogging. The setting of the pressure spring achieves continuous and stable pressure output, improving the filtration effect. The sliding design of the piston push rod allows for automatic pressure adjustment to adapt to different operating conditions.

[0018] Furthermore, the outer surface of the spherical filter cavity is provided with multiple spiral ribs.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the spiral ribs increase the heat dissipation area of ​​the outer surface of the spherical filter cavity, thereby improving the heat dissipation efficiency of the equipment. The rib structure also enhances the deformation resistance of the spherical filter cavity and improves the structural rigidity. The spiral design facilitates the guidance of cooling airflow, further enhancing the cooling effect.

[0020] Furthermore, the spiral rib has a left-handed spiral structure, and the pitch of the spiral rib is 0.3 times the diameter of the spherical filter cavity.

[0021] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the spiral ribs of the left-hand spiral structure and the rotation direction of the scraper arm create a synergistic effect, which helps guide the slag to the discharge port. The design with a pitch of 0.3 times the diameter ensures heat dissipation while avoiding the manufacturing difficulties caused by excessively dense ribs. The spiral structure can also reduce the vibration of the equipment during operation to a certain extent.

[0022] Furthermore, the central rotating shaft is a hollow cylindrical structure, and the inner diameter of the central rotating shaft is 0.6 times the outer diameter of the central rotating shaft.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the central shaft of the hollow cylindrical structure reduces weight and decreases rotational inertia while ensuring sufficient strength. The design of the inner diameter being 0.6 times the outer diameter achieves a balance between structural strength and weight. The hollow structure can also be used as a pipeline, facilitating the introduction of cleaning media or other process fluids.

[0024] Furthermore, the drive gear has 36 teeth, and the transmission ratio between the drive gear and the motor output gear is 1 to 3.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the 36-tooth drive gear design ensures smooth transmission and durability. The 1:3 transmission ratio achieves suitable speed matching, ensuring both effective scraping and avoiding wear caused by excessively high speeds. The reasonable transmission ratio design facilitates efficient motor operation and reduces energy consumption.

[0026] Compared with existing technologies, the beneficial effects of the automatic slag discharge structure of the spherical graphite filter press provided by this utility model are as follows: This utility model overcomes the stress concentration and dead-angle problems of traditional rectangular filters by adopting a spherical filter cavity structure, achieving uniform force distribution and comprehensive filtration. The Y-shaped scraper arm design in the rotating slag discharge mechanism ensures full coverage cleaning of the inner wall of the spherical cavity, effectively solving the problem of incomplete cleaning in traditional equipment. The precise fit between the arc-shaped scraper and the spherical surface, combined with appropriate gap control, ensures both effective scraping and avoids excessive wear. The pressure regulating component, through the cooperation of the conical pressure head and pressure spring, achieves appropriate compaction of the filter media and automatic pressure regulation, significantly improving filtration accuracy and processing efficiency. The superior fluid dynamics characteristics of the spherical structure reduce flow resistance and increase throughput. The spiral rib design not only enhances heat dissipation and structural rigidity but also creates a synergistic effect with the rotation of the scraper arm, promoting rapid slag discharge. The entire device has a compact structure, is easy to operate and maintain, and can achieve efficient separation and continuous operation of graphite particles, greatly improving the working efficiency and reliability of graphite filter press. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the automatic slag discharge structure of a spherical graphite filter press;

[0029] Figure 2 This is a longitudinal cross-sectional view of the automatic slag discharge structure of a spherical graphite filter press;

[0030] Figure 3 A cross-sectional view of the automatic slag discharge structure of a spherical graphite filter press;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Spherical filter chamber; 2. Rotary slag discharge mechanism; 21. Central rotating shaft; 22. Slag scraper arm; 23. Drive gear; 3. Pressure regulating component; 31. Pressure chamber; 32. Piston push rod; 4. Support base. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-3 The diagram shows a first embodiment of the automatic slag discharge structure of a spherical graphite filter press provided by this utility model. In this embodiment, it includes: a spherical filter chamber 1, a rotary slag discharge mechanism 2, a pressure regulating component 3, a support base 4, and a sealing cover. The spherical filter chamber 1 is a hollow sphere structure, with multiple circular filter holes evenly distributed on its surface. A slag discharge port is located at the bottom of the spherical filter chamber 1. The rotary slag discharge mechanism 2 is disposed inside the spherical filter chamber 1 and includes a central rotating shaft 21, a scraper arm 22, and a drive gear 23. The central rotating shaft 21 vertically passes through the geometric center of the spherical filter chamber 1, and its upper and lower ends are respectively connected to the spherical filter chamber 1 via bearings. The top and bottom of the filter chamber 1 are rotatably connected. The scraper arm 22 is fixedly connected to the central rotating shaft 21 in a Y-shaped structure. The three branches of the scraper arm 22 are respectively provided with arc-shaped scrapers. The curvature of the arc-shaped scrapers matches the curvature of the inner wall of the spherical filter chamber 1. The drive gear 23 is fixedly connected to the lower end of the central rotating shaft 21. The drive gear 23 meshes with the output gear of the motor set on the support base 4. The pressure regulating component 3 includes a pressure chamber 31 and a piston push rod 32. The pressure chamber 31 is fixedly connected to the side wall of the spherical filter chamber 1 in a cylindrical structure. The piston push rod 32 is slidably arranged in the pressure chamber 31. The inner end of the piston push rod 32 extends into the interior of the spherical filter chamber 1.

[0035] In the above technical solution, the support base 4 includes a base plate and support columns. The base plate is a rectangular steel plate structure. Support columns are vertically fixed at the four corners of the base plate. The tops of the four support columns are connected to each other through connecting beams to form a square support frame. The spherical filter cavity 1 is fixedly installed on the square support frame by a clamping ring. The inner diameter of the clamping ring is slightly larger than the maximum diameter of the spherical filter cavity 1. The clamping ring is fastened to the equatorial position of the spherical filter cavity 1 by adjusting bolts.

[0036] Furthermore, in the above technical solution, the sealing cover is a hemispherical structure, and an annular sealing groove is provided at the open end of the sealing cover. A rubber sealing ring is embedded in the annular sealing groove. The sealing cover is connected to the top of the spherical filter cavity 1 through a hinge shaft. The axis of the hinge shaft is parallel to the diameter direction of the spherical filter cavity 1. The sealing cover rotates around the hinge shaft to realize the opening and closing action. An operating handle is provided on the outer surface of the sealing cover.

[0037] Furthermore, in the above technical solution, in the Y-shaped structure of the scraper arm 22, the angle between the three branches and the central rotating shaft 21 is 120 degrees. The length of each branch is equal to 0.8 times the radius of the spherical filter cavity 1. The arc-shaped scraper is made of polyurethane material, and the thickness of the arc-shaped scraper is 3 mm to 5 mm. The gap between the arc-shaped scraper and the inner wall of the spherical filter cavity 1 is controlled within the range of 1 mm to 2 mm.

[0038] Furthermore, in the above technical solution, the diameter of the circular filter holes in the spherical filter cavity 1 is 0.5 mm to 1.5 mm, the circular filter holes are distributed on the spherical surface according to the latitude and longitude lines, the center distance between adjacent circular filter holes is 8 mm to 12 mm, and the spherical filter cavity 1 is made of stainless steel 304 material.

[0039] Furthermore, in the above technical solution, the inner diameter of the pressure chamber 31 is 0.15 to 0.25 times the diameter of the spherical filter chamber 1. The front end of the piston push rod 32 is provided with a conical pressure head with a cone angle of 30 to 45 degrees. The rear end of the piston push rod 32 is connected to a pressure spring, and the other end of the pressure spring abuts against the rear end wall of the pressure chamber 31. Under the action of the pressure spring, the piston push rod 32 applies pressure towards the interior of the spherical filter chamber 1.

[0040] Furthermore, in the above technical solution, the outer surface of the spherical filter cavity 1 is provided with multiple spiral ribs.

[0041] Furthermore, in the above technical solution, the spiral rib has a left-hand spiral structure, and the pitch of the spiral rib is 0.3 times the diameter of the spherical filter cavity 1.

[0042] Furthermore, in the above technical solution, the central rotating shaft 21 is a hollow cylindrical structure, and the inner diameter of the central rotating shaft 21 is 0.6 times the outer diameter of the central rotating shaft 21.

[0043] Furthermore, in the above technical solution, the drive gear 23 has 36 teeth, and the transmission ratio between the drive gear 23 and the motor output gear is 1 to 3.

[0044] The following is a specific embodiment 1 of this utility model: The automatic slag discharge structure of the spherical graphite filter press in this embodiment adopts an optimized structural design and high-quality manufacturing materials. The spherical filter chamber 1 is made of 304 stainless steel spheres with a diameter of 800 mm and a wall thickness of 8 mm. The surface is precision machined to ensure a smoothness of Ra0.8 microns. 2400 circular filter holes with a diameter of 1.2 mm are evenly distributed on the spherical surface. The filter holes are manufactured using laser cutting technology, with smooth, burr-free hole walls and a hole spacing of 10 mm. A slag discharge port with a diameter of 80 mm is opened at the bottom of the spherical filter chamber 1. The edge of the slag discharge port is chamfered to facilitate the smooth discharge of slag. The central rotating shaft 21 is made of 45# carbon steel, with an outer diameter of 40 mm, an inner diameter of 24 mm, and a total length of 900 mm. The surface is quenched to increase the hardness to HRC45-50. The upper and lower ends of the rotating shaft are respectively equipped with 6206 type deep groove ball bearings. The outer ring of the bearing is interference-fitted with the bearing seat of the spherical filter chamber 1, and the inner ring is clearance-fitted with the rotating shaft. The Y-type scraper arm 22 is made of cast aluminum alloy, and the length of each of the three branches is 320 mm. The branch cross-section is rectangular, with dimensions of 20 mm × 15 mm. The arc-shaped scraper installed at the end of each branch is made of polyurethane 95A material, with a thickness of 4 mm and an arc length of 150 mm. The scraper surface has micro-drainage grooves to reduce resistance. The drive gear 23 is made of 20CrMnTi carburized and quenched steel, with a module of 3, 36 teeth, a tooth width of 25 mm, and a precision grade of 6. The motor output gear that meshes with it has 12 teeth, achieving a 3:1 reduction transmission. The pressure chamber 31 in the pressure regulating assembly 3 is made of aluminum alloy 6061, with an inner diameter of 120 mm and a length of 200 mm. The inner surface is anodized to improve wear resistance. The piston rod 32 is made of 316 stainless steel with a diameter of 30 mm. The tapered pressure head at the front end has a cone angle of 35 degrees and a length of 25 mm. The pressure spring is made of 65Mn steel wire with a diameter of 4 mm, 20 effective turns, a free length of 100 mm, and a pressure of 500 Newtons when compressed to 60 mm. The base plate of the support base 4 is made of 10 mm thick Q235 steel plate, measuring 1200 mm × 1200 mm. The support columns welded at the four corners are made of 100 mm × 100 mm × 6 mm square steel tubing, with a height of 1000 mm. The connecting beam is made of 80 mm × 80 mm × 5 mm angle steel, forming a stable square support frame. The clamping ring is made of cast iron HT200 with an inner diameter of 820 mm and is securely connected to the spherical filter chamber 1 by 12 M16 adjusting bolts. The sealing cover is made of 304 stainless steel, with a hemispherical diameter of 400 mm and a wall thickness of 6 mm. The annular sealing groove at the open end is 8 mm wide and 4 mm deep. The rubber sealing ring embedded in the groove is made of nitrile rubber with a hardness of A70. The hinge shaft is made of 40Cr steel, with a diameter of 20 mm and a length of 100 mm, and is chrome-plated.The entire device operates on a combination of centrifugal separation and pressure filtration. When the motor starts, the scraper arm 22 rotates at 60 revolutions per minute, generating centrifugal force that propels graphite particles against the inner wall of the spherical filter chamber 1. Fine particles pass through the filter holes and are separated, while larger particles and impurities move towards the discharge port and are discharged under the influence of gravity and the thrust of the scraper arm 22. The pressure regulating component 3 automatically adjusts the pressure according to the resistance of the filter media, ensuring consistent filtration performance. The spiral rib design not only enhances structural strength but also improves heat dissipation, maintaining a stable operating temperature during continuous operation. This device is suitable for processing graphite raw materials of various particle sizes, achieving a filtration accuracy of 0.5 microns, a processing capacity of up to 500 kg per hour, stable and reliable operation, and easy maintenance.

[0045] The following is another specific embodiment 2 of this utility model: Embodiment 2 is based on Embodiment 1, with optimizations and improvements made to the structure of the scraper arm 22. The original three-branch Y-shaped scraper arm 22 is changed to a six-branch star-shaped scraper arm 22, with the six branches evenly distributed at 60 degrees. The length of each branch is shortened to 260 mm, and the branch cross-section is changed to a circle with a diameter of 18 mm. A hollow structure is adopted to reduce weight. The number of arc-shaped scrapers at the end of the branches is increased to six, and the arc length of each scraper is shortened to 100 mm, but the overall scraping coverage area is increased by 40%. The scraper material is changed to polyurethane 90A, which has moderate hardness, ensuring both scraping effect and reducing wear. The manufacturing material of the star-shaped scraper arm 22 is changed to carbon fiber composite material, with a density of only 60% of aluminum alloy, but higher strength, significantly reduced moment of inertia, and 15% lower motor load. To match the six-branch structure, the design of the central rotating shaft 21 is also adjusted accordingly, with six evenly distributed keyways added to the shaft to ensure a reliable connection between the scraper arm 22 and the shaft. In addition, a small airflow guide was added behind each scraper to further promote the separation of fine particles using the airflow generated by the scraper's movement. The improved structure increased scraping efficiency by 25% and reduced power consumption by 12%. Furthermore, the more uniform scraping also improved filtration accuracy. The entire improvement scheme, while maintaining the basic structure of the original device, achieved a significant performance boost through localized optimization, making it particularly suitable for the production of high-purity graphite materials where higher filtration accuracy is required.

[0046] The following is another specific embodiment 3 of this utility model: Embodiment 3 is based on Embodiment 1, and adds an intelligent temperature control system and multi-stage filtration function. Cooling pipes are installed on the spiral ribs on the outer wall of the spherical filter chamber 1. The pipes are made of copper tubing with an outer diameter of 6 mm and a wall thickness of 1 mm, spirally wound around the ribs to form a highly efficient heat exchange system. The cooling medium is deionized water, which is circulated and cooled by a circulating pump, effectively controlling the operating temperature of the equipment below 40 degrees Celsius. Two layers of filter screens with different pore sizes are added inside the spherical filter chamber 1. The first layer has a pore size of 3 mm for initial separation of large particles, the second layer has a pore size of 0.8 mm for separation of medium-sized particles, and finally, fine filtration is achieved through 0.5 mm filter holes on the spherical wall. This three-stage filtration system ensures higher separation accuracy and better product quality. The pressure regulating component 3 adds a pressure sensor and an electric regulating valve, which can monitor the filtration pressure in real time and automatically adjust it, achieving a pressure control accuracy of ±2%. A vibrating slag discharger, driven by an electromagnetic vibrator, has been added to the slag discharge port. The vibration frequency is adjustable within the range of 20-100 Hz, effectively preventing clogging of the discharge port. A transparent observation window made of tempered glass has been added to the sealed cover for easy observation of the internal working status. The entire system is also equipped with an automatic cleaning function. After each working cycle, a high-pressure water flushing program is automatically initiated, with a cleaning time of 5 minutes, ensuring the cleanliness of the equipment. The improved device has increased the filtration accuracy to 0.3 microns, increased the processing capacity to 800 kg per hour, and significantly improved the degree of automation, making it particularly suitable for large-scale continuous production and applications with extremely high product quality requirements.

[0047] Specifically, the principle of this invention is as follows: This device uses a spherical filter cavity as the core filtration unit. The spherical structure has the advantage of having the smallest surface area and the largest volume geometrically. Simultaneously, the radius of curvature at any point on the sphere is equal, resulting in uniform pressure distribution and effectively avoiding stress concentration. The Y-shaped scraper arm is designed based on the principle of spherical geometry, with three branches evenly distributed at 120 degrees, ensuring that the entire spherical surface is covered during rotation, eliminating cleaning dead zones. The curvature of the arc-shaped scraper perfectly matches the inner wall of the spherical filter cavity, forming a continuous scraping trajectory during rotation, achieving comprehensive cleaning of the inner wall. The pressure regulating component uses a spring-piston mechanism, automatically adjusting the pressure according to the resistance of the filter media. The pressure is lower when the filter media is looser and increases accordingly when the filter media density increases, achieving adaptive pressure regulation. The conical pressure head design utilizes the wedge principle, generating a large compaction effect with a smaller force, while the conical structure facilitates uniform pressure transmission. The spiral rib design is based on the principles of fluid mechanics and heat transfer. The spiral structure guides the airflow to form vortices, enhancing convective heat transfer. Simultaneously, the coordinated direction of the spiral and the rotation direction of the scraper arm utilizes the spiral flow characteristics of the fluid, promoting the rapid movement of the slag towards the discharge port. The entire device works by using a motor to drive the scraper arm to rotate. Under the combined action of centrifugal force and gravity, graphite particles are thrown against the inner wall of the spherical filter chamber. Fine particles are discharged through the filter holes, while larger particles are pushed by the scraper arm to the bottom discharge port, achieving a continuous separation and slag discharge process.

[0048] The specific operation or use method of this utility model is as follows: First, prepare for equipment startup by checking whether the inside of the spherical filter chamber is clean, confirming that the scraper arm rotates without obstruction, checking whether the sealing ring of the sealing cover is intact, and verifying whether the piston push rod of the pressure regulating component operates normally. Before starting the motor, it is necessary to confirm that the drive gear meshes well and the lubrication system is working properly. Before officially starting the filtration operation, the preload of the pressure spring needs to be adjusted according to the characteristics of the graphite material to be processed. Generally, fine particles require less pressure, while coarse particles require more pressure. Start the motor to make the scraper arm rotate at a low speed, and feed the graphite raw material into the spherical filter chamber through the feed port on the sealing cover. The feed amount is controlled between 60% and 80% of the volume of the spherical filter chamber. As the scraper arm rotates, the graphite particles move towards the inner wall of the spherical filter chamber under the action of centrifugal force. Fine particles that meet the filtration requirements are discharged through the filter holes and collected in the external collection device. Larger particles and impurities are pushed by the scraper arm to the bottom discharge port and are periodically discharged through the discharge port. Throughout the filtration process, the pressure regulating component automatically adjusts the pressure according to the density of the filter media to ensure stable filtration performance. When a significant reduction in the amount of fine particles discharged is observed, it indicates that the filtration of a batch is nearing completion. At this point, feeding should be stopped to allow the remaining graphite material to be completely processed. After the operation is complete, the motor needs to be stopped, the sealed cover opened for cleaning and maintenance, and the wear of the arc-shaped scraper checked; replacement should be made if necessary. Regularly check the filter pores for blockages and clean them with high-pressure gas or ultrasonic cleaning. Safety precautions should be taken throughout the operation to avoid direct contact with moving parts, and the equipment's operating status and performance indicators should be checked regularly.

Claims

1. An automatic slag discharge structure for a spherical graphite filter press, characterized in that, include: The system comprises a spherical filter chamber, a rotary slag discharge mechanism, a pressure regulating component, a support base, and a sealing cover. The spherical filter chamber is a hollow sphere with multiple evenly distributed circular filter holes on its surface. A slag discharge port is located at the bottom of the spherical filter chamber. The rotary slag discharge mechanism is located inside the spherical filter chamber and includes a central rotating shaft, a scraper arm, and a drive gear. The central rotating shaft vertically passes through the geometric center of the spherical filter chamber. The upper and lower ends of the central rotating shaft are rotatably connected to the top and bottom of the spherical filter chamber via bearings, respectively. The scraper arm is Y-shaped. The structure is fixedly connected to the central rotating shaft. The three branches of the scraper arm are respectively equipped with arc-shaped scrapers. The curvature of the arc-shaped scrapers matches the curvature of the inner wall of the spherical filter cavity. The drive gear is fixedly connected to the lower end of the central rotating shaft. The drive gear meshes with the output gear of the motor set on the support base. The pressure regulating component includes a pressure chamber and a piston rod. The pressure chamber is a cylindrical structure and is fixedly connected to the side wall of the spherical filter cavity. The piston rod is slidably arranged in the pressure chamber. The inner end of the piston rod extends into the interior of the spherical filter cavity.

2. The automatic slag discharge structure of the spherical graphite filter press according to claim 1, characterized in that, The support base includes a base plate and support columns. The base plate is a rectangular steel plate structure, and support columns are vertically fixed at the four corners of the base plate. The tops of the four support columns are connected to each other through connecting beams to form a square support frame. The spherical filter cavity is fixedly installed on the square support frame by a clamping ring. The inner diameter of the clamping ring is slightly larger than the maximum diameter of the spherical filter cavity. The clamping ring is fastened to the equatorial position of the spherical filter cavity by adjusting bolts.

3. The automatic slag discharge structure of the spherical graphite filter press according to claim 2, characterized in that, The sealing cover is a hemispherical structure. The opening end of the sealing cover is provided with an annular sealing groove, and a rubber sealing ring is embedded in the annular sealing groove. The sealing cover is connected to the top of the spherical filter cavity through a hinge shaft. The axis of the hinge shaft is parallel to the diameter direction of the spherical filter cavity. The sealing cover rotates around the hinge shaft to realize the opening and closing action. An operating handle is provided on the outer surface of the sealing cover.

4. The automatic slag discharge structure of the spherical graphite filter press according to claim 3, characterized in that, In the Y-shaped structure of the scraper arm, the angle between the three branches and the central rotating shaft is 120 degrees. The length of each branch is equal to 0.8 times the radius of the spherical filter cavity. The arc-shaped scraper is made of polyurethane material, and the thickness of the arc-shaped scraper is 3 mm to 5 mm. The gap between the arc-shaped scraper and the inner wall of the spherical filter cavity is controlled within the range of 1 mm to 2 mm.

5. The automatic slag discharge structure of the spherical graphite filter press according to claim 4, characterized in that, The spherical filter cavity has a circular filter hole diameter of 0.5 mm to 1.5 mm. The circular filter holes are distributed on the spherical surface according to the latitude and longitude lines. The center distance between adjacent circular filter holes is 8 mm to 12 mm. The spherical filter cavity is made of stainless steel 304 material.

6. The automatic slag discharge structure of the spherical graphite filter press according to claim 5, characterized in that, The inner diameter of the pressure chamber is 0.15 to 0.25 times the diameter of the spherical filter chamber. A conical pressure head is provided at the front end of the piston push rod, and the cone angle of the conical pressure head is 30 to 45 degrees. A pressure spring is connected to the rear end of the piston push rod, and the other end of the pressure spring abuts against the rear end wall of the pressure chamber. Under the action of the pressure spring, the piston push rod applies pressure towards the inside of the spherical filter chamber.

7. The automatic slag discharge structure of the spherical graphite filter press according to claim 6, characterized in that, The outer surface of the spherical filter cavity is provided with multiple spiral ribs.

8. The automatic slag discharge structure of the spherical graphite filter press according to claim 7, characterized in that, The spiral rib has a left-handed spiral structure, and the pitch of the spiral rib is 0.3 times the diameter of the spherical filter cavity.

9. The automatic slag discharge structure of the spherical graphite filter press according to claim 8, characterized in that, The central rotating shaft is a hollow cylindrical structure, and the inner diameter of the central rotating shaft is 0.6 times the outer diameter of the central rotating shaft.

10. The automatic slag discharge structure of the spherical graphite filter press according to claim 9, characterized in that, The drive gear has 36 teeth, and the transmission ratio between the drive gear and the motor output gear is 1 to 3.

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