Ceramic rock plate press powder feeding multi-stage screening and recycling device

Abstract

This utility model discloses a multi-stage screening and recycling device for ceramic slab press powder feeding, including a rotary screen mechanism, a transfer mechanism, a flat screen, and a tilting mechanism. The rotary screen mechanism has an inlet on one side and an outlet on the other side. Screen holes are provided on the circumferential surface of the rotary screen mechanism. The transfer mechanism is located at the bottom of the rotary screen mechanism, and a flat screen is located on one side of the transfer mechanism. The tilting mechanism cooperates with the flat screen. This application achieves preliminary screening of materials and automatically discharges the screen residue by setting an inclined rotary screen mechanism. The transfer mechanism transports the fine material to the flat screen, and the tilting mechanism achieves secondary screening and automatic cleaning. Compared with traditional three-dimensional multi-stage screening, it can effectively reduce the accumulation and blockage of the flat screen, improve the material flowability, and reduce manual intervention with the fully automated conveying and automatic cleaning functions. The graded screening mode and flexible structural design are suitable for various material characteristics, significantly improving screening efficiency and equipment continuous operation capability.

Description

Technical Field

[0001] This utility model relates to the field of ceramic powder screening technology, specifically to a multi-stage screening and recycling device for ceramic slab press powder feeding. Background Technology

[0002] In the ceramic tile production process, the most important factor affecting the forming of the tile blank is the quality of the powder. For large-format ceramic slabs, the requirements for powder quality, including the particle size distribution and the proportion of impurities, coarse particles, wall-adhering material, and powder agglomeration, are even more stringent. Controlling the quality of the powder entering the pressing process is the key to controlling the quality of ceramic tiles.

[0003] Existing screening machines are generally three-dimensional, multi-stage screening machines, specifically including screening cylinders with openings at the top and bottom and screens arranged vertically at intervals inside the screening cylinders. The screens are arranged parallel to each other inside the screening cylinders. Powder is fed into the top of the screening cylinders and screened through multiple screens to obtain powder of different sizes. The screened powder still needs to be manually removed from one side. When screening continuous powder, the above-mentioned screening devices are prone to accumulation and blockage at each layer of screens, requiring manual cleaning, which results in low screening efficiency.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a multi-stage screening and recycling device for ceramic slab press powder feeding, which aims to solve the problem that the screen of the screening device in the prior art is prone to accumulation and blockage, resulting in low screening efficiency.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] A multi-stage screening and recycling device for powder feeding in a ceramic slab press includes:

[0008] The rotary screen mechanism is arranged at an angle; one side of the rotary screen mechanism is provided with an inlet for feeding material and the other side is provided with an outlet for discharging residual material; the circumferential side of the rotary screen mechanism is provided with screen holes for screening out fine material; the inlet is higher than the outlet.

[0009] A transfer mechanism is located at the bottom of the rotary screen mechanism and corresponds to the screen holes, used to receive and transport fine materials;

[0010] A flat screen is located on one side of the transfer mechanism; the transfer mechanism cooperates with the flat screen to convey fine materials onto the flat screen.

[0011] A flipping mechanism is connected to the flat screen and is used to drive the flat screen to flip.

[0012] Furthermore, the rotary screen mechanism includes:

[0013] Support frame;

[0014] A drum screen, one end of which is rotatably mounted on the support frame, and the other end of which is rotatably connected to a lifting mechanism mounted on the support frame;

[0015] The first recovery hopper is located at the outlet of the drum screen.

[0016] Furthermore, the lifting mechanism includes:

[0017] The hydraulic telescopic rod has one end rotatably mounted on the support frame and the other end rotatably mounted on the bottom of the drum screen.

[0018] Furthermore, it also includes:

[0019] A feeding conveyor belt is installed at the top of the drum screen;

[0020] A discharge hopper is located at one end of the feeding conveyor belt; the inlet of the discharge hopper is connected to the feeding conveyor belt, and the outlet of the discharge hopper is located inside the inlet of the drum screen.

[0021] Furthermore, the rotary screen mechanism also includes:

[0022] A guide trough is provided at the bottom of the drum screen to guide the material being screened by the drum screen.

[0023] Furthermore, the transit facility includes:

[0024] A transfer conveyor belt is located at the bottom of the rotary screen mechanism and is used to receive and transport materials screened by the rotary screen mechanism.

[0025] A feeding hopper is located at one end of the intermediate conveyor belt and is used to guide the materials.

[0026] Furthermore, the flipping mechanism includes:

[0027] The frame is located on one side of the transfer mechanism;

[0028] A tilting cylinder is rotatably mounted on the frame; one end of the flat screen is rotatably mounted on the frame, and the other end is rotatably connected to the extended end of the tilting cylinder;

[0029] The second recycling hopper is located on one side of the frame and is used to collect materials that have not passed through the planar screen.

[0030] Furthermore, the flipping mechanism also includes:

[0031] A guide rail is provided at the bottom of the frame; the bottom of the frame is provided with rollers, which cooperate with the guide rail;

[0032] A drive cylinder is located at one end of the guide rail; the extended end of the drive cylinder is connected to the frame to drive the frame to slide back and forth along the guide rail.

[0033] Furthermore, it also includes:

[0034] A receiving hopper, located at the bottom of the flat screen, is used to receive materials that have passed through the flat screen.

[0035] Furthermore, a first pressure sensor is provided on the top of the tilting cylinder, and the other end of the first pressure sensor is rotatably connected to the flat screen.

[0036] Compared with the prior art, the beneficial effects of this utility model are:

[0037] In this invention, the rotary screen mechanism is arranged at an inclination, with an inlet on one side and an outlet on the other, the inlet being higher than the outlet. A transfer mechanism is located at the bottom of the rotary screen mechanism to receive fine materials. A flat screen is located on one side of the transfer mechanism and works in conjunction with it to transfer the fine materials onto the flat screen. A flipping mechanism works in conjunction with the flat screen. This application achieves preliminary screening of materials and automatically discharges the residual material by setting an inclined rotary screen mechanism. The transfer mechanism transports the fine materials to the flat screen, and the flipping mechanism achieves secondary screening and automatic cleaning. Compared with traditional three-dimensional multi-stage screening, it can effectively reduce the accumulation and blockage of the flat screen, improve the flowability of materials, and reduce manual intervention with the fully automated conveying and automatic cleaning functions. The grading screening mode and flexible structural design are suitable for various material characteristics, significantly improving screening efficiency and the continuous operation capability of the equipment. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0039] Figure 2 This is a schematic diagram of the rotary screen mechanism of this utility model.

[0040] Figure 3 This is a schematic diagram of the transfer mechanism of this utility model.

[0041] Figure 4 This is a schematic diagram of the flipping mechanism and the flat screen structure of this utility model.

[0042] The numbers in the diagram represent: 1. Rotary screen mechanism; 11. Support frame; 12. Rotary screen; 13. First recovery hopper; 14. Guide trough plate; 2. Transfer mechanism; 21. Transfer conveyor belt; 22. Feeding hopper; 3. Flat screen; 4. Tilting mechanism; 41. Frame; 42. Tilting cylinder; 43. Second recovery hopper; 44. Guide rail; 45. Roller; 46. Drive cylinder; 5. Feeding conveyor belt; 51. Discharge hopper; 6. Receiving hopper; 7. First pressure sensor; 8. Second pressure sensor. Detailed Implementation

[0043] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0044] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] Existing screening machines are generally three-dimensional multi-stage screening machines, which specifically include screening cylinders with openings at the top and bottom and screens arranged vertically at intervals inside the screening cylinders. The screens are arranged parallel to each other inside the screening cylinders. Powder is fed into the top of the screening cylinders and screened through multiple screens to obtain powder of different sizes. The screened powder needs to be manually removed from one side.

[0047] In multi-stage screening devices, screens are sometimes arranged at an angle, with the discharge port located on one side of the angled screen. However, this arrangement can lead to problems such as short material residence time on the screen, insufficient screening, and uneven discharge. In addition, the screens are subject to heavy local loads, which can cause wear and blockage. They are also difficult to clean and maintain, pose safety hazards, are hard to adapt to different material characteristics, have low automation, and cannot be accurately connected to subsequent equipment, which seriously affects production efficiency and finished product quality.

[0048] In view of the shortcomings of the prior art, this embodiment provides a multi-stage screening and recycling device for powder feeding in a ceramic slab press, as detailed below:

[0049] As attached Figure 1 As shown, a multi-stage screening and recycling device for ceramic slab press powder feeding includes a rotary screen mechanism 1, a transfer mechanism 2, a flat screen 3, and a tilting mechanism 4. The rotary screen mechanism 1 is arranged at an inclination, with an inlet on one side for feeding and an outlet on the other side for discharging screen residue. The inlet is higher than the outlet. Screen holes are provided on the circumferential side of the rotary screen mechanism 1 to output the fine material that passes through the screen, while the unscreened residue is discharged from the outlet. The transfer mechanism 2 is located at the bottom of the rotary screen mechanism 1 and is used to receive the fine material. The flat screen 3 is located on one side of the transfer mechanism 2 and cooperates with the transfer mechanism 2 to convey the fine material onto the flat screen 3. The tilting mechanism 4 is connected to the flat screen 3, and the two are rotatably connected to each other. The tilting mechanism 4 can make the flat screen 3 tilt, which can not only realize secondary screening, but also clean up the unscreened material.

[0050] The rotary screen mechanism 1 is arranged at an angle, which can be adjusted within a certain range according to actual screening requirements, preferably between 10° and 30°. An inlet is located on one side of the rotary screen mechanism 1 for connecting to a feeding device to receive material; this inlet is higher than the outlet on the other side. Large particles that fail to pass through the rotary screen mechanism 1 are automatically discharged from the outlet along the inclined inner wall of the mechanism under gravity, achieving preliminary screening and rapid separation of unqualified materials. The rotary screen mechanism 1 contains a cylindrical screen, ensuring sufficient contact between the material and the screen during rotation, thus improving the screening effect.

[0051] The transfer mechanism 2 is located at the bottom of the rotary screen mechanism 1, and it is equipped with a receiving port and a discharging port. The receiving port is directly opposite the bottom of the rotary screen mechanism 1 and corresponds to the screen holes on the circumferential side of the rotary screen mechanism 1, and is used to receive fine materials. The transfer mechanism 2 transports the fine materials from the receiving port to the discharging port, realizing stable material transfer.

[0052] The flat screen 3 is located on one side of the transfer mechanism 2 and is connected to the discharge port of the transfer mechanism 2. The two are connected by an adjustable height connecting pipe or directly connected to accurately transport the material screened by the roller screen mechanism 1 to the flat screen 3.

[0053] The tilting mechanism 4 is located at the bottom of the flat screen 3 and is rotatably connected to it. After the flat screen 3 completes its screening operation, it can be tilted by the tilting mechanism 4. This not only enables secondary screening of materials, improving screening accuracy, but also allows for quick cleaning of the residue on the flat screen 3, avoiding the tedious manual cleaning process. Simultaneously, the tilting mechanism 4 also allows the flat screen 3 to move horizontally, facilitating connection with different material collection devices and improving the equipment's applicability.

[0054] This invention achieves preliminary and efficient screening of materials through the inclined design of the roller screen mechanism 1, and completes fine grading in conjunction with the structure of the flat screen 3, significantly improving screening efficiency and accuracy; the inclined arrangement and flipping cleaning function reduce the risk of screen blockage, the fully automated operation reduces manual intervention and ensures production continuity; the unscreened material recycling design improves raw material utilization, and the moving and flipping mechanism 4 enhances equipment adaptability, fully meeting the diverse needs of ceramic slab production.

[0055] In this embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, the rotary screen mechanism 1 includes a support frame 11, a rotary screen 12, and a first recovery hopper 13. The support frame 11 can be set on the ground or installed on a platform. The support frame 11 can be constructed from profiles or welded from channel steel. One end of the rotary screen 12 is rotatably mounted on the support frame 11, and the other end is rotatably connected to a lifting mechanism (not shown in the figure) mounted on the support frame 11 to achieve tilt adjustment of the rotary screen 12. The first recovery hopper 13 is provided at the outlet of the rotary screen 12 for recovering materials that have not passed through the rotary screen 12. The first recovery hopper 13 is connected to an external negative pressure recovery system (the negative pressure recovery system is existing technology). The negative pressure adsorbs the materials that have not passed the screening and transports them to the residue slurry tank for reuse after slurrying and grinding.

[0056] The drum screen 12 has a cylindrical structure. One end is rotatably mounted on a column of the support frame 11 via a bearing seat. Specifically, a deep groove ball bearing is installed inside the bearing seat, and the rotating shaft of the drum screen 12 is interference-fitted with the inner ring of the bearing, allowing the drum screen 12 to rotate flexibly. The other end of the drum screen 12 is rotatably connected to a lifting mechanism located on the other side of the support frame 11. The lifting mechanism adopts an electric push rod drive structure. One end of the electric push rod is hinged to the support frame 11, and the other end is connected to the end of the rotating shaft of the drum screen 12 via a universal joint. When it is necessary to adjust the tilt angle of the drum screen 12, the electric push rod is activated by the control system. The extension rod of the electric push rod extends and retracts, driving the drum screen 12 to rotate around the end fixedly connected to the support frame 11, realizing flexible adjustment of the tilt angle within the range of 10°-30° to adapt to the screening requirements of different materials.

[0057] A first recovery hopper 13 is installed at the lower end of the outlet of the inclined drum screen 12. The first recovery hopper 13 has a funnel-shaped structure, and its opening size is larger than the outlet size of the drum screen 12, ensuring that all unscreened material falls into the recovery hopper. A pipe is connected to the bottom of the first recovery hopper 13, which is connected to an external negative pressure recovery system. The negative pressure recovery system adopts existing mature technology and includes components such as a negative pressure fan and a dust collection box. When the negative pressure fan is started, a negative pressure environment is formed in the pipe. Material that has not passed the drum screen 12 is transported to the residue slurry tank through the pipe under the negative pressure adsorption. The residue is mixed with water in the slurry tank to form a slurry, which is then processed by grinding equipment for re-grinding, realizing the reuse of materials, effectively improving the raw material utilization rate and reducing production costs.

[0058] In actual operation, the material enters the drum screen 12 through the feed inlet. As the drum screen 12 rotates, the material moves spirally downwards along the inner wall of the drum screen 12 under its own gravity and the action of the spiral guide plate. During the movement, the material that meets the screen aperture size (fine material) falls through the screen and is received by the transfer mechanism 2 below; while the large particles that do not pass the screening (screen residue) continue to roll along the inner wall of the drum screen 12 and finally fall from the outlet into the first recovery hopper 13, and then are transported to the residue slurry tank by the negative pressure recovery system. By adjusting the inclination angle and rotation speed of the drum screen 12, the residence time of the material in the drum screen 12 and the screening effect can be controlled to meet the needs of different production processes.

[0059] In this embodiment, the rotary screen mechanism 1 achieves full screening of materials through the adjustable tilting angle of the rotary screen 12; at the same time, the first recovery hopper 13, in conjunction with the negative pressure recovery system, regrinds and reuses the unscreened materials, improving the utilization rate of raw materials, and can flexibly adapt to different screening needs, effectively improving screening efficiency.

[0060] In this embodiment, as shown in the appendix Figure 2 As shown, the rotary screen mechanism 1 also includes a guide trough plate 14, which is conical in shape and is located at the bottom of the rotary screen 12. It is used to guide the material screened by the rotary screen 12 so as to transport the material screened by the rotary screen 12 to the transfer mechanism 2.

[0061] The guide trough plate 14 of the rotary screen mechanism 1 is made of high-strength stainless steel in the shape of a truncated cone. The large-diameter end fits into the bottom discharge area of ​​the rotary screen 12, and the small-diameter end connects to the material inlet of the transfer mechanism 2. It is connected to the bottom flange of the rotary screen 12 by bolts and sealed with rubber gaskets. The fine material screened by the rotary screen 12 can be gathered into a stable material flow and accurately transported to the transfer mechanism 2 under the action of gravity, which improves the material transmission efficiency and the stability of equipment collaborative operation.

[0062] In this embodiment, the lifting mechanism includes a hydraulic telescopic rod or an electric push rod; one end of the hydraulic telescopic rod or electric push rod is rotatably mounted on the support frame 11 via a hinge, and the other end is rotatably mounted at the bottom of the drum screen 12 via a universal joint or universal shaft. By activating the hydraulic telescopic rod or electric telescopic rod to extend, the tilt angle of the drum screen 12 can be adjusted.

[0063] In this embodiment, as shown in the appendix Figure 1 As shown, the multi-stage screening and recycling device for ceramic slab press powder feeding also includes a feeding conveyor belt 5 and a discharge hopper 51. The feeding conveyor belt 5 is located at the top of the drum screen 12, and the discharge hopper 51 is located at one end of the feeding conveyor belt 5. The discharge hopper 51 includes an inlet and an outlet, which are arranged in a bent shape. The inlet of the discharge hopper 51 is connected to one end of the feeding conveyor belt 5. The feeding conveyor belt 5 transports the material to the inlet of the discharge hopper 51, and then the material is discharged from the outlet of the discharge hopper 51 and conveyed into the inside of the drum screen 12. The discharge hopper 51 is bent so that the outlet is located inside the drum screen 12 and will not interfere with the inlet of the drum screen 12.

[0064] The combination of the feeding conveyor belt 5 and the bent discharge hopper 51 optimizes the material conveying process of the multi-stage screening and recycling device for ceramic slab press powder feeding. The feeding conveyor belt 5 stably and continuously conveys the material to the discharge hopper 51, ensuring feeding efficiency. The discharge hopper 51 adopts a bent structure, with its inlet receiving the material conveyed by the belt and its outlet precisely extending into the inside of the drum screen 12. This avoids interference with the inlet of the drum screen 12, ensuring safe operation of the equipment, and allows the material to fall directly into the effective screening area of ​​the drum screen 12, reducing material spillage and accumulation. This achieves seamless material connection with the drum screen 12, improving screening efficiency and raw material utilization, while simplifying the conveying path and enhancing the overall operational stability and reliability of the device.

[0065] In this embodiment, as shown in the appendix Figure 3 As shown, the transfer mechanism 2 includes a transfer conveyor belt 21 and a feeding hopper 22. The transfer conveyor belt 21 is located at the bottom of the drum screen 12, with one end inside the support frame 11 and the other end outside the support frame 11, so as to facilitate the conveying of materials to the flat screen 3. The transfer conveyor belt 21, together with the guide trough plate 14, is used to receive and convey fine materials. The feeding hopper 22 is set at one end of the transfer conveyor belt 21 and is used to gather and guide the fine materials, so as to facilitate the conveying of the fine materials to the surface of the flat screen 3.

[0066] The transfer mechanism 2, through the coordinated design of the transfer conveyor belt 21 and the feeding hopper 22, achieves efficient material transfer from the rotary screen mechanism 1 to the flat screen 3. The transfer conveyor belt 21 is arranged close to the bottom of the rotary screen 12, with one end extending into the support frame 11 to receive the screened material discharged from the guide trough plate 14, and the other end extending outside the frame, which can directly and smoothly transport the material to the area of ​​the flat screen 3. Its continuous conveying characteristics prevent material accumulation. The feeding hopper 22 is set at the end of the belt. Through the function of converging and guiding, it gathers the dispersed material into a uniform flow and accurately delivers it to the surface of the flat screen 3. This reduces material spillage during the transmission process and ensures that the material distribution in the screening area of ​​the flat screen 3 is uniform, improving the efficiency of subsequent fine screening. At the same time, the structural design facilitates docking with the front and rear end equipment, enhancing the continuity and reliability of the entire screening system.

[0067] In this embodiment, as shown in the appendix Figure 4 As shown, the tilting mechanism 4 includes a frame 41, a tilting cylinder 42, and a second recycling hopper 43. The frame 41 is located on one side of the transfer conveyor belt 21. The tilting cylinder 42 is rotatably mounted on the frame 41. One end of the flat screen 3 is rotatably mounted on the movable frame, and the other end is rotatably connected to the extended end of the tilting cylinder 42. The second recycling hopper 43 is located on the side of the frame 41 away from the transfer conveyor belt 21 and is used to collect the screen residue of the flat screen 3. By activating the tilting cylinder 42, not only can the angle of the flat screen 3 be adjusted, but the flat screen 3 can also be tilted to realize the dumping of materials.

[0068] The linkage drive of the tilting cylinder 42 enables the automatic tilting of the flat screen 3, which not only performs secondary screening of materials to improve accuracy but also quickly cleans residual materials on the screen, reducing manual intervention. The second recovery hopper 43 accurately receives materials that have not passed through the flat screen 3 and transports them through pipelines for recycling, avoiding material waste. The entire tilting mechanism 4 effectively improves screening efficiency, enhances the automation level of the equipment, reduces maintenance costs, and improves the overall efficiency of ceramic slab raw material screening.

[0069] During the rotation of the flat screen 3, if the distance between the flat screen 3 and the feeding hopper 22 is set to a large distance, the material will not fall accurately onto the flat screen 3; if the distance between the feeding hopper 22 of the flat screen 3 is set to a small distance, although it is convenient for material transportation, the feeding hopper 22 will hinder the rotation of the flat screen 3.

[0070] In this embodiment, as shown in the appendix Figure 4As shown, the flipping mechanism 4 also includes a guide rail 44 and a drive cylinder 46. The guide rail 44 is located at the bottom of the frame 41, and a roller 45 is provided at the bottom of the frame 41. The roller 45 cooperates with the guide rail 44. A drive cylinder 46 is provided at one end of the guide rail 44. The extended end of the drive cylinder 46 is connected to the frame 41. By activating the drive cylinder 46, the frame 41 can be reciprocated along the guide rail 44. The second recycling bucket 43 is located at one end of the moving direction of the frame 41 and is arranged at intervals from the frame 41.

[0071] In this embodiment, the newly added guide rail 44, roller 45, and drive cylinder 46 assembly of the flipping mechanism 4 cleverly resolves the contradiction in the distance setting between the flat screen 3 and the feeding hopper 22: the drive cylinder 46 drives the frame 41 to slide back and forth along the guide rail 44, realizing flexible adjustment of the distance between the flat screen 3 and the feeding hopper 22. During material conveying, the frame 41 can be slid to reduce the distance between the feeding hopper 22 and the flat screen 3, ensuring that the material is accurately and efficiently conveyed from the feeding hopper 22 to the surface of the flat screen 3; when the flat screen 3 needs to be flipped, the drive cylinder 46 pushes the frame 41 to move, increasing the distance between the two, preventing the feeding hopper 22 from obstructing the flipping action of the flat screen 3, and ensuring the smooth progress of secondary screening and screen cleaning. Meanwhile, the second recycling hopper 43 is arranged at intervals with the frame 41 and moves synchronously with the frame 41. While receiving materials that have not passed through the flat screen 3, it does not affect the sliding of the frame 41 or the flipping operation of the flat screen 3. This design not only ensures the accuracy and efficiency of material transmission, but also realizes the flexible application of the flipping function of the flat screen 3, significantly improving the coordination and practicality of the entire screening device.

[0072] In this embodiment, the ceramic slab press powder feeding multi-stage screening and recycling device also includes a receiving hopper 6, which is set at the bottom of the flat screen 3 and is used to receive fine material passing through the screen of the flat screen 3.

[0073] In this embodiment, a first pressure sensor 7 is provided on the top of the tilting cylinder 42, and the other end of the first pressure sensor 7 is rotatably connected to the flat screen 3.

[0074] When the first pressure sensor 7 detects that the residual material on the surface of the flat screen 3 has reached the preset weight, the flipping mechanism 4 is activated, and the transfer conveyor belt 21 stops rotating. At this time, the drum screen 12 can continue to screen, and the screened material falls onto the transfer conveyor belt 21. Then, the drive cylinder 46 drives the flat screen 3 to move along the moving guide rail 44 and move to the first limit point (the first limit point is the flipping position of the flat screen 3). The flipping cylinder 42 is activated to turn the flat screen 3 to a 90-degree position. The residual material on the flat screen 3 is poured into the second recovery hopper 43. The flipping cylinder 42 vibrates the flat screen 3 back and forth twice by air pressure to ensure that the residual material falls completely into the second recovery hopper 43 and then returns the flat screen 3 to an inclination angle of 15°. The drive cylinder 46 drives the flat screen 3 back to the second limit point (the second limit point is the screening working position of the flat screen 3) along the guide rail 44. The transfer conveyor belt 21 starts to start, and the powder screening is repeated in this way.

[0075] In this embodiment, a second pressure sensor 8 is provided at the bottom of the second recovery hopper 43, and the top of the second recovery hopper 43 is connected to the negative pressure recovery system. When the second pressure sensor 8 senses the screen residue, the negative pressure recovery system is activated, and the negative pressure adsorbs the residual screen residue into the material pipe of the second recovery hopper 43 and transports it to the screen residue pulping tank, where it is recycled after pulping and grinding.

[0076] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A multi-stage screening and recycling device for powder feeding in a ceramic slab press, characterized in that, include: The rotary screen mechanism is arranged at an angle; one side of the rotary screen mechanism is provided with an inlet for feeding material and the other side is provided with an outlet for discharging residual material; the circumferential side of the rotary screen mechanism is provided with screen holes for screening out fine material; the inlet is higher than the outlet. A transfer mechanism is located at the bottom of the rotary screen mechanism and corresponds to the screen holes, used to receive and transport fine materials; A flat screen is located on one side of the transfer mechanism; the transfer mechanism cooperates with the flat screen to convey fine materials onto the flat screen. A flipping mechanism is connected to the flat screen and is used to drive the flat screen to flip.

2. The multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 1, characterized in that, The rotary screen mechanism includes: Support frame; A drum screen, one end of which is rotatably mounted on the support frame, and the other end of which is rotatably connected to a lifting mechanism mounted on the support frame; The first recovery hopper is located at the outlet of the drum screen.

3. The multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 2, characterized in that, The lifting mechanism includes: The hydraulic telescopic rod has one end rotatably mounted on the support frame and the other end rotatably mounted on the bottom of the drum screen.

4. The multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 3, characterized in that, It also includes: A feeding conveyor belt is installed at the top of the drum screen; A discharge hopper is located at one end of the feeding conveyor belt; the inlet of the discharge hopper is connected to the feeding conveyor belt, and the outlet of the discharge hopper is located inside the inlet of the drum screen.

5. A multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 2, characterized in that, The rotary screen mechanism further includes: A guide trough is provided at the bottom of the drum screen to guide the fine material.

6. The multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 1, characterized in that, The transit agencies include: A transfer conveyor belt is located at the bottom of the rotary screen mechanism and is used to receive and transport fine materials; A feeding hopper is located at one end of the intermediate conveyor belt and is used to guide fine materials.

7. A multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 1, characterized in that, The flipping mechanism includes: The frame is located on one side of the transfer mechanism; A tilting cylinder is rotatably mounted on the frame; one end of the flat screen is rotatably mounted on the frame, and the other end is rotatably connected to the extended end of the tilting cylinder; The second recycling hopper is located on one side of the frame and is used for the residue from the flat screen.

8. A multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 7, characterized in that, The flipping mechanism further includes: A guide rail is provided at the bottom of the frame; the bottom of the frame is provided with rollers, which cooperate with the guide rail; A drive cylinder is located at one end of the guide rail; the extended end of the drive cylinder is connected to the frame to drive the frame to slide back and forth along the guide rail.

9. A multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 7, characterized in that, It also includes: A receiving hopper, located at the bottom of the flat screen, is used to receive material passing through the screen mesh of the flat screen.

10. A multi-stage screening and recycling device for ceramic slab press powder feeding according to claim 7, characterized in that, The top of the tilting cylinder is equipped with a first pressure sensor, and the other end of the first pressure sensor is rotatably connected to the flat screen.

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