High-frequency screening device for screening granules
By introducing multi-stage screening channels, high-frequency tapping, and flow control mechanisms into the screening device, the problems of incomplete screening and uneven particle distribution in traditional screening devices are solved, achieving efficient multi-stage screening and uniform flow, thus improving screening effect and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional screening devices cannot achieve multi-stage screening, the low vibration frequency leads to poor screening effect, and they cannot control the flow rate and uniform distribution of granular material, resulting in incomplete screening.
A high-frequency screening device was designed, which includes multiple screening channels and a high-frequency beating mechanism. The screen mesh count gradually increases. Combined with a tensioning mechanism, a material blocking component, a flow regulating mechanism, and a vibration guiding mechanism, it ensures uniform flow of granular material and efficient screening.
It achieves efficient multi-stage screening of granular materials, improves screening effect and work efficiency, prevents granular material stacking and clogging, and ensures the uniformity and integrity of the screening process.
Smart Images
Figure CN224010394U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of material screening equipment, specifically relating to a high-frequency screening device for screening granular materials. Background Technology
[0002] Particle grading is a crucial step in the production of pelleted materials. There are specific particle size requirements during the production process, and the grading process directly determines the subsequent material properties. Particle grading is typically achieved using screening devices.
[0003] Traditional screening devices use only a single screen to screen granular materials, which cannot meet the needs of multi-stage screening. Moreover, the low vibration frequency leads to poor screening effect. Existing screening devices that can achieve multi-stage screening cannot control the flow rate of granular materials during the screening process, resulting in problems such as short screening time and uneven distribution of granular materials, which in turn leads to incomplete screening. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-frequency screening device for granular material screening, which can realize high-frequency vibration screening and multi-stage screening of granular materials, control the flow rate of granular materials throughout the screening process and enable the granular materials to flow evenly, resulting in good screening effect and high working efficiency.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A high-frequency screening device for granular material screening includes a screener, a material distributor at the top inlet of the screener, multiple screening channels arranged in parallel from top to bottom inside the screener, the screening channels being inclined from the top inlet to the bottom outlet of the screener, the screening channels including multiple screens connected end to end, the screen mesh size gradually increasing from the upper screening channel to the lower screening channel, multiple high-frequency beating mechanisms at the bottom of the screens, a material blocking component at the connection point above the screens, a feed pipe at the top of the material distributor, a flow regulating mechanism inside the feed pipe, and a vibration guiding mechanism inside the material distributor.
[0007] Furthermore, bending plates are fixed at both ends of the screen inside the screen device, the screen is connected through the bending plates, and the ends of the screen are pulled to the bending plates by a tensioning mechanism.
[0008] Furthermore, the tensioning mechanism includes a hook, a fixed plate, a traction spring, a connecting rod, and a fixed block. The fixed plate is fixed inside the screener. One end of the connecting rod moves through the fixed plate and is connected to the hook. The other end of the connecting rod is provided with a fixed block. A traction spring is sleeved on the connecting rod between the fixed block and the fixed plate. Both ends of the traction spring are connected to the fixed plate and the fixed block, respectively. The end of the screen is fixedly connected to the hook.
[0009] Furthermore, the high-frequency beating mechanism includes a high-frequency motor, a beating shaft, a connecting plate, and a beating block. The beating shaft is rotatably mounted inside the screen and connected to the outer wall of the screen. One end of the connecting plate is fixedly connected to the beating shaft, and the other end of the connecting plate is fixed with a beating block for beating the screen.
[0010] Furthermore, the baffle assembly includes a baffle plate and a fixed shaft. The fixed shaft is fixed inside the screen above the screen, one end of the baffle plate is fixedly connected to the fixed shaft, and the other end of the baffle plate is set close to the screen.
[0011] Furthermore, the flow regulation mechanism includes a flow regulation plate, an regulating arm, and a regulating block. There are two flow regulation plates, with their upper ends rotatably mounted on opposite top sides inside the feed pipe. The bottom outer wall of the feed pipe is fixed with regulating blocks corresponding to the flow regulation plates. The bottom of the feed pipe is provided with regulating arms at the regulating blocks. The regulating arms move through the feed pipe and rotatably connect to the bottom of the corresponding flow regulation plate. The regulating blocks are provided with locking holes, and the regulating arms are provided with regulating holes corresponding to the locking holes. There are multiple regulating holes, and the multiple regulating holes are arranged sequentially along the length of the regulating arm.
[0012] Furthermore, the vibration guiding mechanism includes a vibration frame, guide plates, vibrators, vibration springs, fixed seats, and vibration bases. The vibration frame is located inside the distributor, with its top and bottom extending through it. The top of the vibration frame connects to the feed pipe. Two guide plates are installed inside the vibration frame, and the two guide plates are fixedly connected to form a figure-eight structure. One side of the guide plate is fixedly connected to the inner wall of the vibration frame, and the other side of the guide plate forms a material leakage hole between itself and the inside of the vibration frame. Fixed seats are provided at both ends of the outer walls on both sides of the distributor, and vibration bases are provided above the fixed seats. Vibration bases are fixedly connected to the fixed seats by vibration springs. Vibration shafts corresponding to the vibration bases are provided on the outer wall of the vibration frame. The vibration shafts pass through openings on the side walls of the distributor, exit the distributor, and connect to the corresponding vibration bases. One end of the distributor has an opening, and a vibrator connected to the vibration frame is provided at the opening.
[0013] Furthermore, the material distributor is also equipped with flow adjustment components that correspond one-to-one with the guide plates. The flow adjustment components include flow adjustment plates, adjustment rods, adjustment seats, fixed clamps, and movable clamps. The flow adjustment plates are located above the corresponding guide plates and near the connection between the two guide plates. The adjustment seats are fixed to the top of the material distributor. The fixed clamps are fixed to the adjustment seats. The movable clamps and the fixed clamps are connected by bolts. The adjustment rods are clamped between the fixed clamps and the movable clamps. The adjustment rods move through the material distributor and connect to the flow adjustment plates inside the material distributor.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. This utility model sets up multiple screening channels in the screening device, each screening channel is connected by multiple screens, and the screen mesh count gradually increases from the upper screening channel to the lower screening channel. Combined with the high-frequency tapping mechanism, the screen can vibrate at high frequency, so that the granular material can be screened by the vibration of the screen when it flows along the screen, and finally the particle size classification of the granular material is achieved. At the same time, the flow rate of the granular material when it flows along the screen can be controlled by setting up the baffle component, thereby improving the screening effect by ensuring sufficient screening time.
[0016] 2. By setting up a tensioning mechanism, this utility model can ensure that the screen is kept taut during the high-frequency beating mechanism's beating of the screen, thereby ensuring the vibration intensity generated by the beating and thus ensuring the screening effect.
[0017] 3. By setting up a feeder, feed pipe, flow regulation mechanism and vibration guide mechanism, this utility model can control the flow rate of granular material during feeding, prevent granular material from being blocked in the vibrating frame, and enable the granular material to flow evenly along the guide plate into the screen.
[0018] 4. By setting the flow guiding and adjusting component, this utility model can adjust the flow rate of the granular material when it flows on the guide plate, and at the same time, it can further make the granular material flow uniformly, preventing a large amount of granular material from falling into the screen in a short time and piling up, which would cause material accumulation and reduce the screening effect. Attached Figure Description
[0019] Figure 1 This is a side view of the external structure of the sieve in this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of the sieve in this utility model;
[0021] Figure 3 This is a partial structural schematic diagram of the high-frequency striking mechanism of this utility model;
[0022] Figure 4 This is a schematic diagram of the material-blocking assembly in this utility model;
[0023] Figure 5 This is a schematic diagram of the tensioning mechanism in this utility model;
[0024] Figure 6 This is a schematic diagram of the external structure of the fabric feeder in this utility model;
[0025] Figure 7 This is a schematic diagram of the internal structure of the fabric feeder in this utility model;
[0026] Figure 8 This is a schematic diagram of the flow regulation mechanism in this utility model;
[0027] Figure 9 This is a schematic diagram of the flow guiding and adjusting component in this utility model;
[0028] Figure 10 This is a top view of the vibration frame in this utility model.
[0029] In the diagram: 1. Screener; 2. Distributor; 3. Screening channel; 4. Screen; 5. High-frequency beating mechanism; 51. High-frequency motor; 52. Beating shaft; 53. Connecting plate; 54. Beating block; 6. Material blocking assembly; 61. Material blocking plate; 62. Fixed shaft; 7. Feed pipe; 8. Bending plate; 9. Tensioning mechanism; 91. Hook; 92. Fixed plate; 93. Traction spring; 94. Connecting rod; 95. Fixed block; 1 0. Flow regulating plate; 11. Regulating arm; 12. Regulating block; 13. Locking hole; 14. Regulating hole; 15. Vibration frame; 16. Guide plate; 17. Vibrator; 18. Vibration spring; 19. Fixed seat; 20. Vibration seat; 21. Vibration shaft; 22. Flow guiding and regulating assembly; 221. Flow guiding and regulating plate; 222. Regulating rod; 223. Regulating seat; 224. Fixed clamp; 225. Movable clamp. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0031] like Figures 1-2 As shown, a high-frequency screening device for screening granular materials includes a screener 1, a distributor 2 at the top inlet of the screener 1, and a feed pipe 7 at the top of the distributor 2. The granular material to be screened is fed into the distributor 2 through the feed pipe 7. After being evenly distributed by the distributor 2, the granular material falls into the screener 1, and then the screener 1 screens the granular material.
[0032] like Figure 2 As shown, the screening device 1 has multiple screening channels 3 arranged in parallel from top to bottom. The screening channels 3 are inclined from the top feed inlet to the bottom discharge outlet of the screening device 1. Each screening channel 3 includes multiple screens 4 connected end-to-end, and multiple high-frequency beating mechanisms 5 are located at the bottom of the screens 4. The mesh size of the screens 4 gradually increases from the upper to the lower screening channels 3. The granular material is first evenly dropped onto the screens 4 of the uppermost screening channel 3 by the distributor 2, and then vibrated and screened by the high-frequency beating mechanisms 5. The coarser granules flow along the screens 4 to the discharge outlet at the bottom of the screening device 1, while the finer granules pass through the screens 4 and fall to the lower screening channels 3 for further screening. Finally, through screening through multiple screening channels 3, the particle size of the granular material is classified. The multiple screens 4 in each screening channel 3 increase the number of screening operations and further improve screening efficiency.
[0033] like Figure 2 , Figure 5 As shown, bending plates 8 are fixed at both ends of the screen 4 inside the screen 4 device. The screen 4 is connected through the bending plates 8, and the end of the screen 4 is pulled onto the bending plates 8 by the tensioning mechanism 9. The tensioning mechanism 9 includes a hook 91, a fixed plate 92, a traction spring 93, a connecting rod 94, and a fixing block 95. The fixed plate 92 is fixed inside the screen 1. One end of the connecting rod 94 moves through the fixed plate 92 and is fixedly connected to the hook 91. The other end of the connecting rod 94 is fixedly sleeved with the fixing block 95. The traction spring 93 is sleeved on the connecting rod 94 between the fixing block 95 and the fixed plate 92. The two ends of the traction spring 93 are connected to the fixed plate 92 and the fixing block 95 respectively. The end of the screen 4 is fixedly connected to the hook 91. During the process of the high-frequency beating mechanism 5 beating the screen 4, the screen 4 pulls the connecting rod 94 through the hook 91, which compresses the traction spring 93. The traction spring 93 then reacts to the screen 4, thereby ensuring that the screen 4 is in a taut state, so as to ensure the vibration intensity generated by the beating, and thus ensure the screening effect.
[0034] like Figures 1-3 As shown, the high-frequency beating mechanism 5 includes a high-frequency motor 51, a beating shaft 52, a connecting plate 53, and a beating block 54. The high-frequency motor 51 is rotatably installed inside the screen 1 and connected to the outer wall of the screen 1 through bearings and other connecting parts at both ends of the beating shaft 52. One end of the connecting plate 53 is fixedly connected to the beating shaft 52, and the other end of the connecting plate 53 is fixed with the beating block 54. The high-frequency motor 51 drives the beating shaft 52 to rotate, and then the connecting plate 53 drives the beating block 54 to beat the screen 4, thereby realizing the high-frequency vibration of the screen 4.
[0035] like Figure 2 , Figure 4 As shown, a baffle assembly 6 is provided above the screen 4 at the joint. The baffle assembly 6 includes a baffle plate 61 and a fixed shaft 62. The fixed shaft 62 is fixed inside the sieve separator 1 above the screen 4. One end of the baffle plate 61 is fixedly connected to the fixed shaft 62, and the other end of the baffle plate 61 is positioned close to the screen 4. In the screening channel 3, the granular material flows downward through the gap between the baffle plate 61 and the screen 4. The flow rate of the granular material along the screen 4 can be controlled by the baffle plate 61, thereby improving the screening effect by ensuring sufficient screening time.
[0036] In order to control the flow rate of the granular material during feeding and ensure that the granular material can be evenly distributed on the screen 4, a flow regulation mechanism is provided in the feed pipe 7 and a vibration guiding mechanism is provided in the distributor 2.
[0037] like Figure 7 , Figure 8As shown, the flow regulation mechanism includes a flow regulation plate 10, an regulating arm 11, and an regulating block 12. Two flow regulation plates 10 are provided, with their upper ends rotatably mounted on opposite top sides inside the feed pipe 7 via connecting components such as shafts. A regulating block 12, corresponding to each flow regulation plate 10, is fixed to the bottom outer wall of the feed pipe 7. A regulating arm 11 is correspondingly located at the regulating block 12 at the bottom of the feed pipe 7. The regulating arm 11 movably passes through the feed pipe 7 and is rotatably connected to the bottom of the corresponding flow regulation plate 10 via connecting components such as shafts. A locking hole 13 is provided on the regulating block 12, and a regulating hole 14 corresponding to the locking hole 13 is provided on the regulating arm 11. Multiple regulating holes 14 are provided and arranged sequentially along the length of the regulating arm 11. During feeding, the granular material falls into the feeder 2 between the two flow regulating plates 10. The flow regulating plates 10 can be rotated by the telescopic adjusting arm 11, thereby adjusting the gap between the two flow regulating plates 10 and thus adjusting the flow rate of the granular material during feeding. After adjusting the gap between the two flow regulating plates 10, the adjusting hole 14 on the adjusting arm 11 and the locking hole 13 on the adjusting block 12 are aligned. Then, the adjusting arm 11 and the flow regulating plate 10 are fixed by passing the bolt through the adjusting hole 14 and the locking hole 13 and tightening the bolt.
[0038] like Figure 6 , Figure 7 , Figure 10 As shown, the vibration guiding mechanism includes a vibration frame 15, guide plates 16, a vibrator 17, a vibration spring 18, a fixed base 19, and a vibration seat 20. The vibration frame 15 is located inside the distributor 2, with its top and bottom extending through it. The top of the vibration frame 15 is connected to the feed pipe 7. Two guide plates 16 are provided inside the vibration frame 15, and the two guide plates 16 are fixedly connected to form a figure-eight structure. One side of the guide plate 16 is fixedly connected to the inner wall of the vibration frame 15, and the other side of the guide plate 16 forms a leakage hole between itself and the inside of the vibration frame 15. The granular material falls through the feed pipe 7 onto the two guide plates 16, then flows along the two guide plates 16 to the leakage hole, and then falls through the leakage hole into the screen 1. Fixed seats 19 are fixed at both ends of the outer walls on both sides of the feeder 2. Vibrating seats 20 are provided above the fixed seats 19. Vibrating seats 20 and fixed seats 19 are fixedly connected by vibration springs 18. Vibrating shafts 21 corresponding to the vibrating seats 20 are fixed on the outer wall of the vibrating frame 15. The vibrating shafts 21 pass through the openings on the side walls of the feeder 2 and are fixed to the corresponding vibrating seats 20. One end of the feeder 2 has an opening, and a vibrator 17 connected to the vibrating frame 15 is provided at the opening. The vibrator 17 drives the vibrating frame 15 to vibrate, which in turn drives the guide plate 16 to vibrate, so that the granules can be evenly distributed.
[0039] like Figure 6 , Figure 7 , Figure 9As shown, the fabric distributor 2 is also provided with a flow guiding adjustment assembly 22 corresponding to the flow guide plate 16. The flow guiding adjustment assembly 22 includes a flow guiding adjustment plate 221, an adjustment rod 222, an adjustment seat 223, a fixed clamping block 224, and a movable clamping block 225. The flow guiding adjustment plate 221 is located above the corresponding flow guide plate 16 and near the connection between the two flow guide plates 16. The adjustment seat 223 is fixed to the top of the fabric distributor 2. The fixed clamping block 224 is fixed to the adjustment seat 223. The movable clamping block 225 and the fixed clamping block 224 are connected by bolts. The adjustment rod 222 is clamped between the fixed clamping block 224 and the movable clamping block 225. The adjustment rod 222 moves through the fabric distributor 2 and is fixed to the flow guiding adjustment plate 221 inside the fabric distributor 2. When the granular material falls onto the guide plate 16, it flows along the guide plate 16 between the guide plate 221 and the guide plate 16. The gap between the guide plate 221 and the guide plate 16 can be adjusted by the telescopic adjustment rod 222, thereby adjusting the flow rate of the granular material as it flows through the guide plate 16. This also further ensures that the granular material flows evenly, allowing it to fall uniformly into the screen 1 and preventing a large amount of granular material from falling into the screen 1 in a short time and piling up, which would reduce the screening effect. After adjusting the gap between the guide plate 221 and the guide plate 16, the movable clamping block 225 and the fixed clamping block 224 are fixed with bolts, thereby clamping the adjustment rod 222 and fixing the guide plate 221.
[0040] Finally, although embodiments of the present invention have been shown and described above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-frequency screening device for screening granular materials, characterized in that: Includes a screener (1), a feeder (2) is provided at the top feed inlet of the screener (1), multiple screening channels (3) are provided inside the screener (1), the multiple screening channels (3) are arranged in parallel from top to bottom, the screening channels (3) are inclined from the top feed inlet of the screener (1) to the bottom discharge outlet of the screener (1), the screening channels (3) include multiple screens (4) connected end to end, the mesh number of the screens (4) gradually increases from the upper screening channel (3) to the lower screening channel (3), multiple high-frequency beating mechanisms (5) are provided at the bottom of the screens (4), a baffle assembly (6) is provided at the connection point above the screens (4), a feed pipe (7) is provided at the top of the feeder (2), a flow regulating mechanism is provided inside the feed pipe (7), and a vibration guiding mechanism is provided inside the feeder (2).
2. The high-frequency screening device for granular material screening according to claim 1, characterized in that: Inside the screen (4), there are bent plates (8) fixed at both ends of the screen (4). The screen (4) is connected through the bent plates (8), and the end of the screen (4) is pulled onto the bent plates (8) by the tensioning mechanism (9).
3. The high-frequency screening device for granular material screening according to claim 2, characterized in that: The tensioning mechanism (9) includes a hook (91), a fixed plate (92), a traction spring (93), a connecting rod (94), and a fixed block (95). The fixed plate (92) is fixed inside the screen (1). One end of the connecting rod (94) moves through the fixed plate (92) and is connected to the hook (91). The other end of the connecting rod (94) is provided with a fixed block (95). A traction spring (93) is sleeved on the connecting rod (94) between the fixed block (95) and the fixed plate (92). Both ends of the traction spring (93) are connected to the fixed plate (92) and the fixed block (95) respectively. The end of the screen (4) is fixedly connected to the hook (91).
4. The high-frequency screening device for granular material screening according to claim 1, characterized in that: The high-frequency beating mechanism (5) includes a high-frequency motor (51), a beating shaft (52), a connecting plate (53), and a beating block (54). The beating shaft (52) is rotatably mounted inside the screen (1) and connected to the outer wall of the screen (1). One end of the connecting plate (53) is fixedly connected to the beating shaft (52), and the other end of the connecting plate (53) is fixed with a beating block (54) for beating the screen (4).
5. The high-frequency screening device for granular material screening according to claim 1, characterized in that: The baffle assembly (6) includes a baffle plate (61) and a fixed shaft (62). The fixed shaft (62) is fixed inside the sieve (1) above the screen (4). One end of the baffle plate (61) is fixedly connected to the fixed shaft (62), and the other end of the baffle plate (61) is set close to the screen (4).
6. The high-frequency screening device for granular material screening according to claim 1, characterized in that: The flow regulation mechanism includes a flow regulation plate (10), an adjustment arm (11), and an adjustment block (12). There are two flow regulation plates (10). The upper ends of the two flow regulation plates (10) are respectively rotatably set on opposite top sides inside the feed pipe (7). The bottom outer wall of the feed pipe (7) is fixed with an adjustment block (12) corresponding to the flow regulation plate (10). The bottom of the feed pipe (7) is located at the adjustment block (12) and the adjustment arm (11) is correspondingly provided. The adjustment arm (11) moves through the feed pipe (7) and is rotatably connected to the bottom of the corresponding flow regulation plate (10). The adjustment block (12) is provided with a locking hole (13). The adjustment arm (11) is provided with an adjustment hole (14) corresponding to the locking hole (13). There are multiple adjustment holes (14) and multiple adjustment holes (14) are arranged sequentially along the length direction of the adjustment arm (11).
7. The high-frequency screening device for granular material screening according to claim 1, characterized in that: The vibration guiding mechanism includes a vibration frame (15), a guide plate (16), a vibrator (17), a vibration spring (18), a fixed seat (19), and a vibration base (20). The vibration frame (15) is located inside the feeder (2). The top and bottom of the vibration frame (15) are connected. The top of the vibration frame (15) is connected to the feed pipe (7). Two guide plates (16) are provided inside the vibration frame (15). The two guide plates (16) are fixedly connected to form a figure-eight structure. One side of the guide plate (16) is fixedly connected to the inner wall of the vibration frame (15), and the other side of the guide plate (16) is fixedly connected to the inner wall of the vibration frame (15). 15) A material leakage hole is formed between the inside. Fixed seats (19) are provided at both ends of the outer wall of the material distributor (2). A vibrating seat (20) is provided above the fixed seat (19). The vibrating seat (20) and the fixed seat (19) are fixedly connected by a vibrating spring (18). The outer wall of the vibrating frame (15) is provided with a vibrating shaft (21) corresponding to the vibrating seat (20). The vibrating shaft (21) passes through the opening on the side wall of the material distributor (2) and is connected to the corresponding vibrating seat (20). One end of the material distributor (2) is provided with an opening. A vibrator (17) connected to the vibrating frame (15) is provided at the opening.
8. The high-frequency screening device for granular material screening according to claim 7, characterized in that: The feeder (2) is also provided with a flow adjustment assembly (22) corresponding to the flow guide plate (16). The flow adjustment assembly (22) includes a flow adjustment plate (221), an adjustment rod (222), an adjustment seat (223), a fixed clamping block (224), and a movable clamping block (225). The flow adjustment plate (221) is located above the corresponding flow guide plate (16) and close to the connection between the two flow guide plates (16). The adjustment seat (223) is fixed to the top of the feeder (2). The fixed clamping block (224) is fixed to the adjustment seat (223). The movable clamping block (225) and the fixed clamping block (224) are connected by bolts. The adjustment rod (222) is clamped between the fixed clamping block (224) and the movable clamping block (225). The adjustment rod (222) moves through the feeder (2) and connects to the flow adjustment plate (221) inside the feeder (2).