A kaolin screening apparatus

Abstract

The application provides a kaolin screening device, which comprises a box body and a mounting block. Opposite side walls of the box body are provided with movable grooves. A mounting frame is obliquely arranged in the movable grooves. A mesh plate is detachably arranged in the mounting frame. Both ends of the mounting frame pass through the movable grooves. The mounting block is slidably arranged on the top of the mounting frame. An air cavity is arranged in the mounting block. An air inlet pipe, which is in communication with the air cavity, is arranged on the mounting block. The air inlet pipe is in communication with an external air source. A plurality of air holes are arranged on the side of the mounting block facing the mounting frame. A plurality of bristles are arranged on the circumference of each air hole. A linear driving mechanism is further arranged on the mounting frame to drive the mounting block to slide. The application solves the problem that the mesh hole is blocked, the aperture is reduced, the screening efficiency is reduced, and the material classification is not complete in the long-term screening operation of kaolin in the prior art.

Description

Technical Field

[0001] This invention relates to the field of kaolin processing technology, and more particularly to a kaolin screening device. Background Technology

[0002] Kaolin is a high-quality non-metallic clay mineral with abundant reserves in my country. It is named after Gaoling Village in Jingdezhen, Jiangxi Province, where it was first discovered. Its core mineral components are kaolinite and halloysite, along with impurities such as quartz and mica. It has a soft and fine texture, a pure white color, and possesses unique physical and chemical properties such as excellent plasticity, binding properties, refractoriness, and insulation. It is an indispensable basic raw material in industrial production and has extremely high industrial utilization value.

[0003] Kaolin undergoes multiple refined processing steps from raw ore to finished industrial product, with screening being a crucial grading and purification process. After mining, the raw kaolin ore first undergoes pretreatment processes such as crushing, grinding, and washing to break up clumps and remove coarse impurities like sand and gravel, resulting in a kaolin slurry or powder of varying fineness. Subsequently, specialized screening equipment grades the material, selecting fine kaolin powder that meets industrial particle size standards and separating insufficiently ground coarse particles, thus ensuring uniform particle size and purity in the finished product.

[0004] Kaolin itself is highly adhesive, fine-textured, and has a high moisture content. During the screening process, fine clay particles easily adhere to and become embedded in the tiny mesh of the screen. This type of adhering clay has strong adhesion and will continue to accumulate and block the mesh, unable to detach itself during screening. Over time, the area of ​​mesh blockage expands, significantly reducing the effective screening area of ​​the screen, directly causing a decrease in screening efficiency, incomplete material classification, and the problem of mixed coarse and fine particles, seriously affecting the precision and quality stability of the finished kaolin product. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a kaolin screening device, which solves the problem that in the long-term screening of kaolin, the mesh size becomes smaller after the mesh is blocked, resulting in a decrease in screening efficiency and incomplete material classification.

[0006] According to an embodiment of the present invention, a kaolin screening device includes a box and a mounting block. The top of the box is provided with a feeding port, and movable grooves are opened on opposite side walls of the box. An installation frame is inclinedly mounted in the movable groove. The installation frame has a hollow structure and a mesh plate is detachably provided inside the installation frame. Both ends of the installation frame extend out of the movable groove. A first spring is provided in each movable groove. One end of the first spring is fixed to the bottom wall of the movable groove, and the other end of the first spring is fixed to the bottom of the installation frame. A vibration mechanism is also provided at the bottom of the installation frame. The mounting block is slidably mounted on the top of the installation frame. An air cavity is opened in the mounting block. An air inlet pipe communicating with the air cavity is provided on the mounting block and is connected to an external air source. A plurality of air holes are opened on the side of the mounting block facing the installation frame. A plurality of bristles are provided circumferentially at each air hole. A linear drive mechanism for driving the mounting block to slide is also provided on the installation frame.

[0007] Compared with existing technologies, this invention has the following advantages: By using a linear drive mechanism to drive the mounting block to move on top of the mounting frame, at any time during the screening process, the mounting block can be moved to allow an external air source to input high-pressure gas into the air chamber of the mounting block through the air inlet pipe and then discharge it through the air hole. This high-pressure impacts the blocked filter holes on the screen plate below, thereby dislodging the kaolin blocking the filter holes. While the high-pressure gas impacts the filter holes, the bristles at the air hole can further clean the inner wall of the filter holes on the screen plate, reducing residue. The combination of high-pressure gas and bristles allows the bristles to powerfully clean the filter holes on the screen plate, achieving fast and efficient cleaning. This ensures that the screen plate can continuously and efficiently screen the kaolin, guaranteeing the screening quality.

[0008] Furthermore, each air hole is provided with a rotating ring, and each rotating ring is provided with at least one guide vane, with the bristles arranged in the circumferential direction at the end of the rotating ring away from the air hole.

[0009] Furthermore, a guide shell is provided at the bottom of the feeding port, and an air pump is fixedly installed on the outer wall of the guide shell. Several through holes are opened on the guide shell, and the input end of the air pump is connected to the inside of the guide shell through the through holes.

[0010] Furthermore, the air pump is a dual-purpose positive and negative pressure pump. The input end of the dual-purpose positive and negative pressure pump is connected to the through hole, and the output end of the dual-purpose positive and negative pressure pump is connected to the air inlet pipe.

[0011] Furthermore, the flow guide shell is also symmetrically and rotatably equipped with rotating rollers, and the rotating rollers are equipped with several dispersing rods. The horizontal height of the two rotating rollers is located below the horizontal height of the through hole. The flow guide shell is also equipped with a drive assembly for driving the two rotating rollers to rotate.

[0012] Furthermore, the drive assembly includes: a drive motor, which is fixedly mounted on the guide shell. The output end of the drive motor is fixed to one of the rotating rollers. The ends of the two rotating rollers away from the drive motor both extend out of the guide shell and are equipped with gears, which mesh with each other.

[0013] Furthermore, the end face of the mounting frame near the feeding port is provided with a mounting groove, the mesh plate is inserted into the mounting groove, and the mounting frame is also provided with a limiting component to prevent the mesh plate from falling out of the mounting groove.

[0014] Furthermore, the limiting component includes: a slider and a second spring. The slider is slidably disposed at one end of the mounting frame facing the feeding port. A slot is provided on the top of the slider, and a sliding post is slidably disposed in the slot. A pull handle is provided at the end of the sliding post away from the slider. The second spring is sleeved on the sliding post. One end of the second spring is fixed to the pull handle, and the other end of the second spring is fixed to the top of the slider. An insertion hole for inserting the sliding post is also provided on the mounting frame.

[0015] Furthermore, the top of the mounting block is rounded. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the box according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation position of the rotating ring according to an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the rotating ring installation according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation position of the rotating roller in an embodiment of the present invention.

[0021] In the above attached diagram: 1. Box body; 2. Mounting frame; 3. Mesh plate; 4. First spring; 5. Mounting block; 6. Air inlet pipe; 7. Air hole; 8. Brush bristles; 9. Linear drive mechanism; 10. Rotating ring; 11. Guide vane; 12. Guide shell; 13. Positive and negative pressure dual-purpose pump; 14. Rotating roller; 15. Dispersing rod; 16. Drive motor; 17. Gear; 18. Slider; 19. Second spring; 20. Sliding column; 21. Pull handle. Detailed Implementation

[0022] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 3As shown in the figure, this embodiment of the invention proposes a kaolin screening device, including a box body 1 and a mounting block 5. The top of the box body 1 is provided with a feeding port. The opposite side walls of the box body 1 are provided with movable grooves. An installation frame 2 is inclinedly mounted in the movable groove. The installation frame 2 is a hollow structure. A mesh plate 3 is detachably provided in the installation frame 2. Both ends of the installation frame 2 extend out of the movable groove. A first spring 4 is provided in each movable groove. One end of the first spring 4 is fixed to the bottom wall of the movable groove, and the other end of the first spring 4 is fixed to the bottom of the installation frame 2. A vibration mechanism is also provided at the bottom of the installation frame 2. The mounting block 5 is slidably mounted on the top of the installation frame 2. An air cavity is provided in the installation block 5. An air inlet pipe 6 is provided on the installation block 5 and communicates with the air cavity. The air inlet pipe 6 is connected to an external air source. A number of air holes 7 are provided on the side of the installation block 5 facing the installation frame 2. A number of bristles 8 are provided around each air hole 7. A linear drive mechanism 9 is also provided on the installation frame 2 to drive the installation block 5 to slide.

[0024] Specifically, guide rails can be installed along the length of the top of both sides of the mounting frame 2. The mounting block 5 is slidably mounted on the top of the mounting frame 2 via the guide rails. A first spring 4 is provided between the mounting frame 2 and the movable groove, so that the kaolin fed into the feeding port of the mounting frame 2 is discharged from its high end to its low end under the vibration of the vibration mechanism. The vibration mechanism is a vibration exciter in the prior art, such as a vibration motor. It should be noted that dustproof cloths can be installed on both sides of the first spring 4 in the movable groove where the high end of the mounting frame 2 is located, to accommodate the vertical displacement of the mounting frame 2 while preventing internal dust from overflowing. When using this device, kaolin is fed into the box 1 through the feeding port. This kaolin falls onto the mesh plate 3 inside the mounting frame 2. The mesh plate 3 has filter holes. Under the action of the vibration mechanism, this kaolin is screened, and the finer kaolin falls below the mesh plate 3. It should be noted that a door that can be opened and closed can be provided at the bottom of the box 1 to facilitate the removal of the kaolin from the bottom of the box 1. At the appropriate time, the linear drive mechanism 9 is activated and an external air source supplies air to the air inlet pipe 6. The linear drive mechanism 9 drives the mounting block 5 to move, and the external air source provides high-pressure gas. This high-pressure gas is discharged through the air holes 7 on the mounting block 5. While the linear drive mechanism 9 drives the mounting block 5 to move, it works in conjunction with the brush bristles 8 to blow and clean the filter holes on the screen plate 3, thereby ensuring that the screen plate 3 maintains an effective screening area, the material is thoroughly screened, and secondary rework is avoided while also ensuring the screening quality of kaolin. Preferably, the free ends of the brush bristles 8 extend in any direction. It should be noted that the linear drive mechanism 9 is a device in the prior art that can drive objects to move linearly. It can be a linear motor, which is set along the length of the mounting frame 2. The stator of the linear motor is fixed to the mounting block 5. The external air source can be an air compressor, and the output end of the air compressor is connected to the air inlet pipe 6 through a hose.

[0025] like Figure 3 and Figure 4 As shown, furthermore, each air hole 7 is rotatably provided with a rotating ring 10, and each rotating ring 10 is provided with at least one guide vane 11. The bristles 8 are arranged circumferentially at the end of the rotating ring 10 away from the air hole 7. Specifically, the guide vane 11 is fan-shaped. Preferably, the bristles 8 are arbitrarily inclined relative to the axial direction of the rotating ring 10. In this embodiment, the rotating ring 10 is rotatably provided on the air hole 7, and the bristles 8 are arranged on the rotating ring 10. When high-pressure gas is blown out from the air hole 7, part of the gas will be blown onto the guide vane 11. The guide vane 11 is fixed to the inner wall of the rotating ring 10, thereby driving the rotating ring 10 to rotate, which in turn causes the bristles 8 to rotate as well. This further enhances the active cleaning effect of the bristles 8 on the filter holes of the mesh plate 3, making the brushing of the filter holes more powerful, resulting in better cleaning effect and faster cleaning speed.

[0026] like Figure 2 As shown, a guide shell 12 is further provided at the bottom of the feeding port. An air pump is fixedly installed on the outer wall of the guide shell 12. Several through holes are opened on the guide shell 12, and the input end of the air pump is connected to the inside of the guide shell 12 through the through holes. The guide shell 12 is connected to the feeding port. Since semi-dry kaolin may be added and dust will be generated during the kaolin screening process, the air pump generates negative pressure to absorb the dust overflowing upward through the guide shell 12, preventing it from overflowing and affecting the surrounding environment. In this embodiment, a negative pressure pump is selected, and a filter screen can be installed at each through hole to prevent large particles of kaolin from being sucked in.

[0027] like Figure 2 As shown, the air pump is a dual-purpose positive and negative pressure pump 13. The input end of the dual-purpose positive and negative pressure pump 13 is connected to the through hole, and the output end of the dual-purpose positive and negative pressure pump 13 is connected to the air inlet pipe 6. In this embodiment, the dual-purpose positive and negative pressure pump 13 is installed on the outer wall of the guide shell 12. The input end of the dual-purpose positive and negative pressure pump 13 forms a negative pressure band in the guide shell 12 through the through hole, which restricts dust from drifting out from the feeding port. Its output end connects the compressed high-pressure gas to the air inlet pipe 6 through the hose, allowing the air hole 7 to blow out the high-pressure gas to clean the filter holes on the mesh plate 3.

[0028] like Figure 5As shown, furthermore, the guide shell 12 is symmetrically and rotatably equipped with rotating rollers 14, each with several dispersing rods 15. The horizontal height of both rotating rollers 14 is below the horizontal height of the through hole. The guide shell 12 is also equipped with a drive assembly for driving the two rotating rollers 14 to rotate. In this embodiment, to prevent the kaolin material entering the guide shell 12 from becoming compacted and blocked, rotating rollers 14 are rotatably arranged inside the guide shell 12. Driven by the drive assembly, the two rotating rollers 14 drive the dispersing rods 15 to disperse the kaolin material, preventing the compacted kaolin material from being unable to be screened by the filter holes of the screen plate 3. Setting the horizontal height of the rotating rollers 14 below the height of the through hole allows the dust generated during the dispersing process to be absorbed by the negative pressure generated in the through hole, preventing overflow.

[0029] like Figure 5 As shown, the driving assembly further includes a drive motor 16, which is fixedly mounted on the guide shell 12. The output end of the drive motor 16 is fixed to one of the rotating rollers 14. Both rotating rollers 14 have gears 17 extending from the guide shell 12 at their ends away from the drive motor 16, and the two gears 17 mesh with each other. In this embodiment, when the kaolin put into the guide shell 12 is broken up, the drive motor 16 is started, driving one of the rotating rollers 14 to rotate. Since the other end of this rotating roller 14 meshes with the gear 17 on the other rotating roller 14, the two rotating rollers 14 rotate synchronously, causing the breaking-up rods 15 on the rotating rollers 14 to strike the kaolin inside the guide shell 12, breaking up the compacted kaolin. Preferably, protective covers are provided on the two gears 17.

[0030] like Figure 1 As shown, furthermore, the end face of the mounting frame 2 near the feeding port has a mounting groove, and the screen plate 3 is fitted into the mounting groove. The mounting frame 2 is also equipped with a limiting component to prevent the screen plate 3 from being removed from the mounting groove. The screen plate 3 is mounted on the mounting frame 2 through the mounting groove. The screen plate 3 can be pulled out from the mounting groove for easy maintenance or replacement with screen plates 3 of different aperture sizes to meet different screening requirements. After the screen plate 3 is fitted into the mounting groove of the mounting frame 2, it is restrained by the limiting component to prevent it from being removed from the mounting groove during operation.

[0031] like Figure 1As shown, the limiting component further includes a slider 18 and a second spring 19. The slider 18 is slidably disposed at the end of the mounting frame 2 facing the feeding port. A slot is provided on the top of the slider 18, and a sliding post 20 is slidably disposed in the slot. A pull handle 21 is provided at the end of the sliding post 20 away from the slider 18. The second spring 19 is sleeved on the sliding post 20. One end of the second spring 19 is fixed to the pull handle 21, and the other end of the second spring 19 is fixed to the top of the slider 18. The mounting frame 2 also has an insertion hole for the sliding post 20 to be inserted. In this embodiment, two sliders 18 are symmetrically and slidably disposed at one end of the mounting groove opening of the mounting frame 2. A sliding groove can be provided on the mounting frame 2, and a T-shaped block that cooperates with the sliding groove can be provided on the slider 18, so that the slider 18 can slide on the mounting frame 2 without dislodging from the mounting frame 2. Workers can slide slider 18 to block the opening of the mounting slot, and then insert the sliding post 20 on slider 18 into the socket on the mounting frame 2 to prevent the mesh plate 3 in the mounting slot from coming out. When it is necessary to remove the mesh plate 3, pull handle 21 to overcome the elastic force of the second spring 19 and make the sliding post 20 come out of the socket. Then slide the two sliders 18 toward both ends of the mounting frame 2 so that the sliders 18 do not block the opening of the mounting slot.

[0032] Furthermore, the top of mounting block 5 is arc-shaped. During the continuous feeding process into the feeding port, if mounting block 5 is moving for cleaning operations, its arc-shaped top structure can prevent material from accumulating on its top.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A kaolin screening device, characterized in that, include: Box (1), the top of the box (1) is provided with a feeding port, the opposite side walls of the box (1) are provided with movable slots, the movable slots are inclinedly mounted with an installation frame (2), the installation frame (2) is a hollow structure, the installation frame (2) is detachably provided with a mesh plate (3), both ends of the installation frame (2) protrude through the movable slots, each movable slot is provided with a first spring (4), one end of the first spring (4) is fixed to the bottom wall of the movable slot, the other end of the first spring (4) is fixed to the bottom of the installation frame (2), the bottom of the installation frame (2) is also provided with a vibration mechanism; Mounting block (5) is slidably set on the top of mounting frame (2). An air chamber is opened in the mounting block (5). An air inlet pipe (6) communicating with the air chamber is provided on the mounting block (5). The air inlet pipe (6) is connected to an external air source. Several air holes (7) are opened on the side of the mounting block (5) facing the mounting frame (2). Several bristles (8) are provided in the circumferential direction at each air hole (7). A linear drive mechanism (9) for driving the mounting block (5) to slide is also provided on the mounting frame (2).

2. The kaolin screening device as described in claim 1, characterized in that: Each air hole (7) is provided with a rotating ring (10) and each rotating ring (10) is provided with at least one guide vane (11). The bristles (8) are arranged in the circumferential direction of the rotating ring (10) away from the air hole (7).

3. The kaolin screening device as described in claim 1, characterized in that: The bottom of the feeding port is provided with a flow guide shell (12), and an air pump is fixedly provided on the outer wall of the flow guide shell (12). Several through holes are opened on the flow guide shell (12), and the input end of the air pump is connected to the inside of the flow guide shell (12) through the through holes.

4. The kaolin screening device as described in claim 3, characterized in that: The air pump is a dual-purpose positive and negative pressure pump (13). The input end of the dual-purpose positive and negative pressure pump (13) is connected to the through hole, and the output end of the dual-purpose positive and negative pressure pump (13) is connected to the air inlet pipe (6).

5. The kaolin screening device as described in claim 3, characterized in that: The guide shell (12) is also symmetrically and rotatably provided with rotating rollers (14), and several dispersing rods (15) are provided on the rotating rollers (14). The horizontal height of the two rotating rollers (14) is located below the horizontal height of the through hole. The guide shell (12) is also provided with a drive assembly for driving the two rotating rollers (14) to rotate.

6. The kaolin screening device as described in claim 5, characterized in that, The drive assembly includes a drive motor (16), which is fixedly mounted on the guide shell (12). The output end of the drive motor (16) is fixed to one of the rotating rollers (14). The ends of the two rotating rollers (14) away from the drive motor (16) both extend out of the guide shell (12) and are provided with gears (17). The two gears (17) mesh with each other.

7. The kaolin screening device as described in claim 1, characterized in that: The mounting frame (2) has an installation groove on the end face near the feeding port. The mesh plate (3) is installed in the installation groove. The mounting frame (2) is also provided with a limiting member to prevent the mesh plate (3) from coming out of the installation groove.

8. A kaolin screening device as described in claim 7, characterized in that the limiting member... include: The slider (18) and the second spring (19) are slidably disposed on the end of the mounting frame (2) facing the feeding port. The top of the slider (18) has a slot, and a sliding post (20) is slidably disposed in the slot. The end of the sliding post (20) away from the slider (18) has a pull handle (21). The second spring (19) is sleeved on the sliding post (20). One end of the second spring (19) is fixed to the pull handle (21), and the other end of the second spring (19) is fixed to the top of the slider (18). The mounting frame (2) also has a socket for the sliding post (20) to be inserted.

9. The kaolin screening device as described in claim 1, characterized in that: The top of the mounting block (5) is rounded.

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