Multi-stage screening device for raw material screening
By introducing a buffered filter screen and a drawer-type buffer frame into the raw material screening device, the problems of damage and contamination caused by collisions during the raw material screening process are solved, achieving efficient screening and stable equipment operation.
Patent Information
- Application Number
- CN202520357620.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In existing raw material screening devices, the rapid aggregation of raw materials during the screening process leads to violent collisions, causing damage and equipment contamination, which affects quality and operational stability.
A multi-stage screening device was designed, comprising a support, a drive unit, a transmission unit, a screening cylinder, a connecting cylinder, a discharge cylinder, and a feed cylinder. It adopts a buffer filter screen and a drawer-type buffer frame to reduce the impact of raw materials through buffering and filtration, thereby improving screening quality and equipment sealing.
It effectively reduces raw material damage, improves screening quality and equipment lifespan, and ensures stable operation and efficient filtration.
Smart Images
Figure CN223875551U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to raw material multistage screening technical field, especially in raw material screening multistage screening device. BACKGROUND
[0002] Raw material multistage screening device is a kind of efficient screening equipment, it is widely used in chemical industry, food, pharmaceutical, metallurgy, mining and other industries, for granular material screening and grading.Raw material multistage screening device is usually composed of vibration motor, sieve box, multilayer screen, support structure, suspension device and transmission device etc.Vibration motor provides vibration power, drives sieve box to produce vibration, so that material moves and screens on sieve surface.Multilayer screen is located in sieve box, and the aperture size of each layer of screen can be different, for grading and screening material.The aperture size of screen determines the screening granularity, and multilayer screen can realize multistage screening.
[0003] The raw material screening multistage screening device in the prior art has some shortcomings in actual use.When the screened raw material falls from the screening net to the discharge port, due to the high speed and aggregation, it often causes violent collision between the raw materials, resulting in damage to the raw materials.This damage not only affects the quality of the raw materials, but also may reduce the effect of subsequent processing or use.
[0004] In addition, the rapid aggregation and falling of raw materials can also pollute the discharge port.As the raw materials may contain dust, debris and other impurities, these impurities are easily scattered and attached to the discharge port and its surroundings during the collision process, causing equipment pollution and cleaning difficulty.Over time, this pollution may affect the normal operation and screening effect of the equipment. UTILITY MODEL CONTENTS
[0005] The main purpose of the utility model is to provide a raw material screening multistage screening device, which can effectively solve the problems raised in the background art.
[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:
[0007] A raw material screening multistage screening device, comprising a support, a drive device, a transmission device, a screening cylinder, a connecting cylinder, a discharge cylinder and a feeding cylinder, the drive device and the transmission device are installed on the support, the discharge cylinder, the first screening cylinder, the connecting cylinder, the second screening cylinder and the feeding cylinder are arranged in order from bottom to top on the support, the first screening cylinder and the second screening cylinder are rotated by the transmission device, thereby realizing the screening operation of raw material particles.
[0008] The upper part of the support is provided with a first screening cover and a second screening cover, the first screening cover is opposite to the second screening cylinder, and the second screening cover is opposite to the first screening cylinder, and the material falling of the screening cylinder is guided by the screening cover.
[0009] At the lower ends of the first screening cover and the second screening cover, there is a discharge cover, and an isolation plate is provided in the middle of the discharge cover. Two drawer-type buffer frames are provided at the slotted side walls of the discharge cover. Inside each drawer-type buffer frame, there is a buffer-type filter screen connected, and the buffer and filtration of the dropped screening raw materials are achieved through the buffer-type filter screen.
[0010] In a further preferred solution, the first screening cover and the second screening cover are fixed to the inner wall of the bracket by bolts. The inner walls of the first screening cover and the second screening cover are designed in a "丿" shape, and there is a gap between the screening cover and the screening cylinder;
[0011] In a further preferred solution, the discharge cover is connected to the first screening cover and the second screening cover by bolts. The cross-section of the discharge cover is designed in an inverted trapezoid. The discharge cover is fixed to the isolation plate by bolts, and a sealing rubber strip is provided at the connection between the isolation plate and the discharge cover;
[0012] In a further preferred solution, a protruding block is provided at the inner end of the drawer-type buffer frame. The protruding block is inserted into the socket hole on the inner wall of the discharge cover. A handle is provided outside the drawer-type buffer frame, and the disassembly and assembly of the drawer-type buffer frame are operated through the handle;
[0013] In a further preferred solution, the buffer-type filter screen is woven from elastic wire meshes and is fixed to the drawer-type buffer frame by a perforation method. The buffer-type filter screen faces the first screening cylinder or the second screening cylinder;
[0014] In a further preferred solution, a sealing rubber strip is provided at the connection between the drawer-type buffer frame and the discharge cover. A plurality of discharge ports are provided at the lowermost end of the drawer-type buffer frame, and the drawer-type buffer frame is designed to be inclined.
[0015] Compared with the prior art, the present utility model has the following beneficial effects:
[0016] The buffer and filtration of the dropped raw materials are carried out through the buffer-type filter screen, ensuring that the quality of the screened raw materials is higher. The buffer filter screen reduces the direct impact of the raw materials on the equipment, thereby reducing equipment wear and extending its service life.
[0017] The design of the drawer-type buffer frame makes the disassembly and assembly of the filter screen convenient and fast, facilitating regular cleaning and replacement, and improving the maintenance efficiency of the equipment. The buffer-type filter screen faces the screening cylinder, ensuring that the filter screen can capture and filter raw material particles more effectively, and improving the filtering effect.
[0018] The design of the discharge ports helps the materials to be discharged smoothly, reducing the loss during the discharge process. The sealing rubber strip ensures the sealing performance of the equipment, preventing material leakage, and thus improving the stability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is the whole structure schematic view of the utility model;
[0020] Figure 2 It is the whole structure side view of the utility model;
[0021] Figure 3 It is the display drawing of the screening cylinder, screening cover, discharging cover, drawer type buffer frame and buffer type filter screen of the utility model;
[0022] Figure 4 It is the drawing of the discharging cover, isolation plate, drawer type buffer frame, handle and buffer type filter screen of the utility model.
[0023] In the drawing: 1, support; 2, driving device; 3, transmission device; 4, first screening cylinder; 5, second screening cylinder; 6, connecting cylinder; 7, discharging cylinder; 8, feeding cylinder; 9, first screening cover; 10, second screening cover; 11, discharging cover; 12, isolation plate; 13, drawer type buffer frame; 14, buffer type filter screen; 15, discharging port; 16, handle. DETAILED DESCRIPTION
[0024] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0025] As shown in Figure 1 - Figure 4 A multi-stage screening device for raw material screening, which comprises a support 1, a driving device 2, a transmission device 3, a screening cylinder, a connecting cylinder 6, a discharging cylinder 7 and a feeding cylinder 8. The driving device 2 and the transmission device 3 are installed on the support 1, and the discharging cylinder 7, the first screening cylinder 4, the connecting cylinder 6, the second screening cylinder 5 and the feeding cylinder 8 are sequentially arranged on the support 1 from bottom to top. The first screening cylinder 4 and the second screening cylinder 5 are rotated through the transmission device 3, thereby realizing the screening operation of raw material particles of different sizes; this design enables the device to efficiently process raw material particles of different sizes, thereby improving production efficiency and raw material utilization rate.
[0026] The upper part of the support 1 is provided with a first screening cover 9 and a second screening cover 10, wherein the first screening cover 9 is opposite to the second screening cylinder 5, and the second screening cover 10 is opposite to the first screening cylinder 4. The screening cover guides the material of the screening cylinder to fall; this structural design ensures the orderly flow of raw materials during the screening process, and reduces the loss of raw materials during the screening process.
[0027] At the lower ends of the first screening cover 9 and the second screening cover 10, there is a discharge cover 11. At the middle of the discharge cover 11, there is a partition plate 12. At the slotted side walls of the discharge cover 11, there are two drawer-type buffer frames 13. Inside each drawer-type buffer frame 13, there is a buffer-type filter net 14 connected. Through the buffer-type filter net 14, the buffering and filtering of the dropped screening raw materials are realized. This design not only improves the screening quality of the raw materials but also extends the service life of the equipment.
[0028] The first screening cover 9 and the second screening cover 10 are fixed to the inner wall of the bracket 1 by bolts. Their inner walls are designed in a "丿" shape to ensure an appropriate gap between the screening cover and the screening cylinder. This design enables the device to maintain good ventilation during operation, thereby reducing the energy consumption of the equipment.
[0029] The discharge cover 11 is connected to the first screening cover 9 and the second screening cover 10 by bolts. The cross-section of the discharge cover 11 is designed in an inverted trapezoid to optimize the flow of materials. The discharge cover 11 is fixed to the partition plate 12 by bolts. At the connection between the partition plate 12 and the discharge cover 11, there is a sealing rubber strip to prevent material leakage. This design not only improves the flow efficiency of the materials but also ensures the sealing of the equipment, thereby enhancing the operating stability of the equipment.
[0030] At the inner end of the drawer-type buffer frame 13, there is a protruding block. The protruding block is inserted into the embedded hole on the inner wall of the discharge cover 11 to ensure the stable fixation of the frame. On the outside of the drawer-type buffer frame 13, there is a handle 16. Through the handle 16, the disassembly and assembly of the drawer-type buffer frame 13 can be conveniently operated. This design makes the maintenance and replacement of the filter net of the equipment more convenient and fast.
[0031] The buffer-type filter net 14 is woven from elastic wire meshes and is fixed to the drawer-type buffer frame 13 by perforation, ensuring that the buffer-type filter net 14 faces the first screening cylinder 4 or the second screening cylinder 5 to improve the filtering efficiency. This design enables the filter net to better adapt to the screening requirements of the raw materials, thereby enhancing the filtering effect.
[0032] At the connection between the drawer-type buffer frame 13 and the discharge cover 11, there is a sealing rubber strip to ensure the sealing. At the lowermost end of the drawer-type buffer frame 13, there are multiple discharge ports 15. The design of the discharge ports 15 makes the frame inclined, which helps the smooth discharge of materials. This design not only improves the discharge efficiency of the materials but also reduces the loss of materials during the discharge process.
[0033] Assembly process: Install the drive device 2 and the transmission device 3 on the bracket 1. Sequentially arrange the discharge cylinder 7, the first screening cylinder 4, the connecting cylinder 6, the second screening cylinder 5 and the feed cylinder 8 on the bracket 1. Ensure that the first screening cylinder 4 and the second screening cylinder 5 are rotated by the transmission device 3. Install the first screening cover 9 and the second screening cover 10 in the upper part inside the bracket 1, ensuring that the first screening cover 9 faces the second screening cylinder 5 and the second screening cover 10 faces the first screening cylinder 4. Install the discharge cover 11 at the lower ends of the first screening cover 9 and the second screening cover 10, and install two drawer-type buffer frames 13 at the slotted side walls of the discharge cover 11. Connect the buffer-type filter screen 14 inside each drawer-type buffer frame 13. Fix the first screening cover 9 and the second screening cover 10 to the inner wall of the bracket 1 by bolts, and ensure that their inner walls are designed in a "丿" shape. Connect the discharge cover 11 to the first screening cover 9 and the second screening cover 10 by bolts, and ensure that the cross-section of the discharge cover 11 is designed in an inverted trapezoid. Fix the isolation plate 12 to the discharge cover 11 by bolts, and set a sealing rubber strip at the connection. Ensure that the protruding blocks at the inner ends of the drawer-type buffer frames 13 are inserted into the inner wall socket holes of the discharge cover 11, and facilitate disassembly and assembly through the external handle 16. Ensure that the buffer-type filter screen 14 faces the first screening cylinder 4 or the second screening cylinder 5, and is fixed to the drawer-type buffer frame 13 by perforation. Set a sealing rubber strip at the connection between the drawer-type buffer frame 13 and the discharge cover 11, and open multiple discharge ports 15 at the bottom end of the frame.
[0034] During use: Start the drive device 2 to make the transmission device 3 drive the first screening cylinder 4 and the second screening cylinder 5 to rotate. Input the raw materials into the equipment through the feed cylinder 8. The raw materials are subjected to multi-stage screening in the first screening cylinder 4 and the second screening cylinder 5, and raw material particles of different sizes are screened out. The screened raw materials are discharged through the connecting cylinder 6 and the discharge cylinder 7. The discharge cover 11 guides the screened raw materials to fall into the drawer-type buffer frame 13. The buffer-type filter screen 14 buffers and filters the falling raw materials to improve the screening quality. The filtered raw materials are smoothly discharged through the discharge ports 15 of the drawer-type buffer frame 13.
[0035] Turn off the power of the equipment to ensure that the equipment has completely stopped running. Open the external handle 16 of the drawer-type buffer frame 13 and pull the frame out of the discharge cover 11. Remove the residual raw materials and impurities in the frame. If necessary, remove the buffer-type filter screen 14 and clean the filter screen with clean water or an appropriate cleaning agent. After cleaning, dry the filter screen in the air or blow it dry with compressed air. Re-fix the dried filter screen to the drawer-type buffer frame 13. Re-install the drawer-type buffer frame 13 into the discharge cover 11, and ensure that the sealing rubber strip is intact. Check whether all the connection parts are firm, and restart the equipment after ensuring no leakage.
[0036] It is to be noted that, in the present document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0037] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A multi-stage screening device for raw material screening, comprising a support (1), a driving device (2), a transmission device (3), a screening cylinder, a connecting cylinder (6), a discharge cylinder (7) and a feeding cylinder (8), the driving device (2) and the transmission device (3) are installed on the support (1), the discharge cylinder (7), the first screening cylinder (4), the connecting cylinder (6), the second screening cylinder (5) and the feeding cylinder (8) are sequentially arranged on the support (1) from bottom to top, the first screening cylinder (4) and the second screening cylinder (5) rotate through the transmission device (3), thereby realizing the screening operation of the size of raw material particles, characterized in that: The upper part inside the bracket (1) is equipped with a first screening cover (9) and a second screening cover (10). The first screening cover (9) faces the second screening cylinder (5), and the second screening cover (10) faces the first screening cylinder (4). The materials in the screening cylinder are guided by the screening covers to fall down. At the lower ends of the first screening cover (9) and the second screening cover (10), there is a discharge cover (11). And at the middle of the discharge cover (11), there is a partition plate (12). At the slot on the side wall of the discharge cover (11), there are two drawer-type buffer frames (13). Inside each drawer-type buffer frame (13), there is a buffer-type filter net (14) connected. The buffer and filtration of the falling screened raw materials are achieved through the buffer-type filter net (14).
2. A multi-stage screening device for raw material screening according to claim 1, characterized in that: The first screening cover (9) and the second screening cover (10) are fixed to the inner wall of the bracket (1) by bolts. The inner walls of the first screening cover (9) and the second screening cover (10) are designed in a "丿" shape, and there is a gap between the screening cover and the screening cylinder.
3. A multi-stage screening device for raw material screening according to claim 2, characterized in that: The discharge cover (11) is connected to the first screening cover (9) and the second screening cover (10) by bolts. The cross-section of the discharge cover (11) is designed in an inverted trapezoid. The discharge cover (11) is fixed to the partition plate (12) by bolts, and a sealing rubber strip is provided at the connection between the partition plate (12) and the discharge cover (11).
4. A multi-stage screening apparatus for raw material screening according to claim 3, characterized in that: At the inner end of the drawer-type buffer frame (13), there is a protruding block, which is inserted into the embedding hole on the inner wall of the discharge cover (11). On the outside of the drawer-type buffer frame (13), there is a handle (16). The disassembly and assembly of the drawer-type buffer frame (13) are operated through the handle (16).
5. A multi-stage screening apparatus for raw material screening according to claim 4, characterized in that: [[ID= 6. A multi-stage screening apparatus for raw material screening according to claim 5, characterized in that: