Screening device of multi-stage classifying screen
By designing a multi-stage grading screen screening device and using the combined structure of an inclined screen plate and an interceptor plate, the problem of uneven distribution of plastic particles during the screening process is solved, and efficient and accurate material classification and screening are achieved.
Patent Information
- Application Number
- CN202421123626.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the screening process, the unreasonable structural design of the screening device leads to uneven distribution of the particles, resulting in uneven screening results.
Design a multi-stage classification screen screening device, which uses a frame to install multiple inclined screen plates. Each screen plate is fixedly connected to an interception plate at one end close to the feeding box. The interception plate is provided with guide holes to ensure that the materials are evenly distributed and processed. Sift thoroughly.
Through this device, the material can be evenly distributed on the sieve plate, which improves the screening efficiency and accuracy, ensures that the materials of different levels of materials are effectively separated and processed, and the unevenness of the screening results and the blockage of the material are avoided.
Smart Images
Figure CN222385278U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a multi-stage grading screen screening device, belonging to the technical field of particle screening. Background Art
[0002] The accumulation problem of plastic particles is mainly caused by the blockage of the screen mesh, the accumulation of material discharge too quickly and other reasons. During the screening process, the plastic particles need to be evenly distributed on the screen plate so that the particle classification can be achieved through the screening effect of the screen plate. However, due to the unreasonable structural design of the screening device, the plastic particles may move quickly on the screen plate and cause uneven distribution of particles. The particle density in some areas is too large, while the particle density in other areas is too small, which leads to uneven screening results. Therefore, a multi-stage grading screen screening device is proposed. Utility Model Content
[0003] The purpose of the utility model is to provide a multi-stage grading screen screening device to solve the problems raised in the above background technology.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-stage grading screen screening device, comprising a box body, a screening mechanism is arranged inside the box body, the screening mechanism comprises a frame, the frame is installed inside the box body, a plurality of sieve plates are arranged on the frame, the frame provides support for the sieve plates, the upper surfaces of the plurality of sieve plates are inclined and connected in sequence, a feed box for conveying materials to the highest end sieve plate is installed on the side wall of the sieve plate, sieve holes are opened on the surface of each sieve plate, the diameter of the sieve holes on the sieve plate close to the feed box is small, and the diameter of the sieve holes on the sieve plate farther away from the feed box is larger;
[0005] Among them, each screen plate is fixedly connected to an intercepting plate at one end close to the feed box. The main function of the intercepting plate is to prevent the material from sliding quickly from the upper screen plate to the next screen plate directly, ensuring that the material is fully screened on the screen plate. The intercepting plate is provided with a plurality of guide holes near the bottom of the screen plate to allow the material to pass through the intercepting plate from the upper screen plate to the next screen plate, so that the material is evenly distributed on the next screen plate and moves, further improving the screening effect.
[0006] Preferably, a feed hopper is fixedly installed on the top of the box body above the feed box, and an outlet of the feed hopper is connected to the inner cavity of the feed box through a hose.
[0007] Preferably, a motor is fixedly installed inside the box, a flywheel is fixedly connected to the output shaft of the motor, a connecting rod is rotatably connected to the surface of the flywheel away from the center of the flywheel, and the other end of the connecting rod is rotatably connected to the side wall of the frame, and when the motor is running, the flywheel drives the frame to swing through the connecting rod.
[0008] Preferably, a plurality of tracks are arranged on the inner wall of the box body, the length direction of the tracks is parallel to the length direction of the frame, that is, the length direction of the tracks is perpendicular to the moving direction of the material on the screen plate, and the frame is slidably connected to the inside of the tracks.
[0009] Preferably, a baffle plate adapted to the intercepting plate is fixedly connected to the inner top of the box body, the baffle plate is fitted on the side wall of the corresponding intercepting plate, and a second material guide hole is opened at the bottom of the baffle plate. When the frame swings, the second material guide hole and the first material guide hole alternately switch between the staggered and aligned states.
[0010] Preferably, a support plate is provided below each sieve plate, the support plate is fixed on the box body, a material receiving box is placed on the support plate, and one end of the material receiving box passes through the box body and extends to the outside.
[0011] Preferably, a handle for conveniently pulling out the material receiving box is fixedly connected to the outer end of the material receiving box, so as to facilitate the operator to pull out and move the material receiving box, making the entire operation process more labor-saving and efficient.
[0012] Preferably, a material guide wall capable of guiding the screened material into the material receiving box is arranged on the side wall of the frame and above the material receiving box, and the bottom of the material guide wall is inclined toward the inner cavity of the material receiving box, ensuring that the material can slide smoothly along the inclined surface of the material guide wall and accurately fall into the material receiving box, thereby preventing the material from scattering during the sliding process.
[0013] Compared with existing technologies:
[0014] 1. The utility model prevents materials from rolling down quickly from the upper screen plate to the lower screen plate by adding an intercepting plate, thereby ensuring that the materials are fully screened on the screen plate. The material guide holes on the intercepting plate allow materials to pass through the intercepting plate from the upper screen plate and enter the lower screen plate, and ensure that the materials can be evenly distributed on the lower screen plate, thereby further improving the screening effect, not only improving the screening efficiency, but also ensuring the accuracy of the screening results, so that materials of different levels can be effectively separated and processed.
[0015] 2. The utility model cooperates with the guide hole 2 on the intercepting plate to control the flow of materials. When the frame is driven by the motor to swing, the positional relationship between the guide hole 2 and the guide hole 1 will change. In the staggered state, the material is temporarily intercepted on the upper screen plate and cannot continue to flow downward. In the aligned state, the material can align with the guide hole 1 through the guide hole 2 and enter the next screen plate from the upper screen plate. This not only ensures that the material can be evenly distributed on the next screen plate, but also prevents the material from being blocked or accumulated during the screening process, thereby further improving the screening efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 It is a cross-sectional view of the box body and the screening mechanism of the utility model;
[0018] Figure 3 It is a cross-sectional view of the box, frame and screen plate of the utility model;
[0019] Figure 4 It is a cross-sectional view of the box body, feed hopper, hose and feed box of the utility model;
[0020] Figure 5 It is a cross-sectional exploded view of the frame, screen plate, intercepting plate and baffle of the utility model.
[0021] In the figure: 1, box body, 2, feed hopper, 201, hose, 3, screening mechanism, 301, frame, 302, screen plate, 303, feed box, 4, intercepting plate, 401, material guide hole 1, 5, motor, 6, flywheel, 7, connecting rod, 8, track, 9, baffle, 901, material guide hole 2, 10, support plate, 11, material receiving box, 12, handle, 13, material guide wall. DETAILED DESCRIPTION
[0022] The present invention is described below with specific embodiments, but is not intended to be a limitation of the present invention.
[0023] Example 1
[0024] like Figure 1-Figure 5 As shown, in this embodiment, a multi-stage grading screen screening device is provided, including a box body 1, a screening mechanism 3 is arranged inside the box body 1, and the screening mechanism 3 includes a frame 301, the frame 301 is installed inside the box body 1, a plurality of sieve plates 302 are arranged on the frame 301, the frame 301 provides support for the sieve plates 302, side plates are arranged on both sides of the sieve plates 302 to prevent materials from being scattered from both sides of the sieve plates 302, the upper surfaces of the plurality of sieve plates 302 are inclined and connected in sequence, a feed box 303 for conveying materials to the highest end sieve plate 302 is installed on the side wall of the sieve plate 302, and each sieve plate 302 has a surface provided with a The sieve holes on the sieve plate 302 close to the feed box 303 have a small diameter, and the sieve holes on the sieve plate 302 farther away from the feed box 303 have larger diameters. The sieve holes on the sieve plate 302 allow materials to be screened according to their size. The inclined design of the sieve plate 302 helps the materials slide down along the sieve plate 302 under the action of gravity to achieve continuous screening. The sieve holes on the sieve plate 302 close to the feed box 303 have a small diameter. As the sieve plate 302 moves away from the feed box 303, the diameter of the sieve holes gradually increases, so that small particles can be screened out at an early stage, while large particles can continue to slide downward until they are screened out by the sieve holes of corresponding sizes.
[0025] Among them, each sieve plate 302 is fixedly connected to an interception plate 4 at one end close to the feed box 303. The main function of the interception plate 4 is to prevent the material from sliding quickly from the upper sieve plate 302 to the lower sieve plate 302, so as to ensure that the material is fully screened on the sieve plate 302. The interception plate 4 is provided with a plurality of guide holes 401 near the bottom of the sieve plate 302, which allow the material to pass through the interception plate 4 from the upper sieve plate 302 to enter the lower sieve plate 302, so that the material is evenly distributed on the lower sieve plate 302 and moves, thereby further improving the screening effect.
[0026] The material is evenly conveyed to the highest end screen plate 302 through the feed box 303. The upper surface of the screen plate 302 is inclined, which helps the material slide down along the screen plate 302 under the action of gravity.
[0027] The surface of each sieve plate 302 is provided with sieve holes, and the size of these sieve holes varies according to the position of the sieve plate 302. The diameter of the sieve holes on the sieve plate 302 close to the feed box 303 is smaller, and only material particles smaller than the sieve holes can pass through these sieve holes, while larger particles will continue to slide down on the sieve plate 302;
[0028] As the material slides downward along the inclined screen plate 302, it encounters the screen plates 302 with large screen hole diameters, on which larger material particles begin to be able to pass through the screen holes, while even larger particles continue to slide downward until they encounter screen holes of appropriate sizes;
[0029] At one end of each sieve plate 302 close to the feed box 303, an interception plate 4 is fixed. The main function of the interception plate 4 is to prevent the material from rolling down quickly from the previous sieve plate 302 to the next sieve plate 302, ensuring that the material is fully screened on the sieve plate 302. The guide hole 401 opened on the interception plate 4 allows the material to pass through the interception plate 4 from the previous sieve plate 302 and enter the next sieve plate 302, and ensure that the material can be evenly distributed on the next sieve plate 302, further improving the screening effect;
[0030] Through the above screening principle, the multi-stage grading screen screening device can realize efficient and continuous screening of materials, and divide the materials into different levels according to the particle size. This screening method not only improves the screening efficiency, but also ensures the accuracy of the screening results, so that materials of different levels can be effectively separated and processed;
[0031] In addition, an interception plate 4 is also provided between the outlet of the feed box 303 and the highest end screen plate 302. After the material in the feed box 303 slides out from the outlet of the feed box 303, it rolls onto the screen plate 302 through the guide hole 401.
[0032] like Figure 4As shown, in order to continuously replenish materials into the feed box 303, a feed hopper 2 is fixedly installed on the top of the box body 1 above the feed box 303, and the outlet of the feed hopper 2 is connected to the inner cavity of the feed box 303 through a hose 201;
[0033] A feed hopper 2 is fixedly installed on the top of the box body 1, located above the feed box 303. The feed hopper 2 serves as a material inlet, allowing an operator or an automatic conveying system to continuously add material to be screened therein. In order to allow the material to smoothly enter the feed box 303 from the feed hopper 2, a hose 201 is connected between the two. One end of the hose 201 is connected to the outlet of the feed hopper 2, and the other end extends into the inner cavity of the feed box 303, which not only ensures that the material can be smoothly transmitted, but also allows the feed box 303 to be moved when necessary without affecting the continuity of material replenishment.
[0034] Example 2
[0035] like Figure 2 , Figure 3 As shown, on the basis of Example 1, in order to improve the efficiency of screening materials by the screening mechanism 3, a motor 5 is fixedly installed inside the box 1. The motor 5 serves as a power source, and a flywheel 6 is fixedly connected to its output shaft. The swing of the screening mechanism 3 is controlled by the rotation of the flywheel 6.
[0036] A connecting rod 7 is rotatably connected to the surface of the flywheel 6 away from the center thereof, and the other end of the connecting rod 7 is rotatably connected to the side wall of the frame 301, so that when the flywheel 6 rotates, the frame 301 can be driven to swing through the connecting rod 7;
[0037] When the motor 5 is running, the flywheel 6 starts to rotate and drives the frame 301 to swing through the connecting rod 7. This swing drives the screen plate 302 to move together, causing the material to vibrate on the screen plate 302, thereby accelerating the screening process of the material.
[0038] The swinging screen plate 302 can not only increase the contact opportunity between the material and the screen hole, making it easier for the material to pass through the screen hole, but also effectively prevent the material from accumulating or clogging on the screen plate 302, thereby ensuring the continuity and efficiency of the screening process;
[0039] In addition, by adjusting the rotation parameters of the motor 5 (eg, adjusting the rotation speed), the user can also flexibly adjust the swing frequency of the screening mechanism 3 according to the different characteristics and screening requirements of the materials to achieve the best screening effect.
[0040] like Figure 2 , Figure 3 as well as Figure 4As shown, in order to ensure the stability of the swinging and sliding of the screening mechanism 3, a plurality of tracks 8 are arranged on the inner wall of the box body 1, and the length direction of the tracks is parallel to the length direction of the frame 301, that is, the length direction of the tracks 8 is perpendicular to the moving direction of the material on the screen plate 302, and the frame 301 is slidably connected to the inside of the tracks 8;
[0041] The track 8 is installed in a specific layout and angle to ensure that the screening mechanism 3 can move along a predetermined path when swinging to avoid deviation or shaking;
[0042] The frame 301 can be slidably connected to the inside of the track 8, and a sliding member or roller matching the track 8 is installed on the side wall or bottom of the frame 301, so that the frame 301 can slide smoothly along the track 8;
[0043] When the motor 5 drives the flywheel 6 and the connecting rod 7 to make the frame 301 swing, the frame 301 can slide stably on the track 8 without shaking or deflection.
[0044] like Figure 2 , Figure 5 As shown, in order to enable the material to intermittently move from the upper sieve plate 302 to the next sieve plate 302 to prevent the material from being blocked or piled up during the screening process, a baffle 9 adapted to the interception plate 4 is fixedly connected to the inner top of the box body 1, the baffle 9 is fitted on the side wall of the corresponding interception plate 4, and a second material guide hole 901 is opened at the bottom of the baffle 9. When the frame 301 swings, the second material guide hole 901 and the first material guide hole 401 are alternately switched between the staggered and aligned states.
[0045] The second material guide hole 901 cooperates with the first material guide hole 401 on the intercepting plate 4 to jointly control the flow of the material. When the frame 301 is driven to swing by the motor 5, the positional relationship between the second material guide hole 901 and the first material guide hole 401 will change. In the staggered state, the material is temporarily intercepted on the upper sieve plate 302 and cannot continue to flow downward; in the aligned state, the material can align with the first material guide hole 401 through the second material guide hole 901 and enter the next sieve plate 302 from the upper sieve plate 302;
[0046] By alternating between the staggered and aligned states of the second material guide hole 901 and the first material guide hole 401, the screening device achieves precise control over the material flow, which not only ensures that the material can be evenly distributed on the next screen plate 302, but also prevents the material from being blocked or accumulated during the screening process, further improving the screening efficiency and quality.
[0047] Example 3
[0048] like Figure 1-Figure 3As shown, on the basis of Example 1 or Example 2, in order to collect the screened materials, a support plate 10 is provided under each screen plate 302, the support plate 10 is fixed on the box body 1, and a material receiving box 11 is placed on the support plate 10, and one end of the material receiving box 11 passes through the box body 1 and extends to the outside;
[0049] The main function of the support plate 10 is to provide support for the material receiving box 11 to ensure that it can stably receive the material screened from the screen plate 302 during the screening process.
[0050] The material receiving box 11 is placed on the support plate 10 so that one end can pass through the box body 1 and extend to the outside, making it convenient for the operator to clean the material in the material receiving box at any time. After the material on the screen plate 302 is screened, materials of different particle sizes will fall into the corresponding material receiving box 11 through the screen holes, thereby realizing the classified collection of materials of different particle sizes.
[0051] The outer end of the material receiving box 11 is fixedly connected with a handle 12 for conveniently pulling out the material receiving box 11. In order to facilitate the operator to pull out and move the material receiving box 11, the handle 12 not only provides a convenient gripping point so that the operator can easily pull out the material receiving box 11, but also makes the entire operation process more labor-saving and efficient.
[0052] A material guide wall 13 is provided on the side wall of the frame 301 and above the material receiving box 11, which can guide the screened material into the material receiving box 11. The bottom of the material guide wall 13 is inclined toward the inner cavity of the material receiving box 11, ensuring that the material can slide smoothly along the inclined surface of the material guide wall 13 and fall accurately into the material receiving box 11, preventing the material from scattering during the sliding process.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A multi-stage grading screen screening device, characterized in that: The invention comprises a box body (1), wherein a screening mechanism (3) is arranged inside the box body (1), wherein the screening mechanism (3) comprises a frame (301), wherein a plurality of screen plates (302) are arranged on the frame (301), wherein the upper surfaces of the plurality of screen plates (302) are inclined and connected in sequence, and a feed box (303) for conveying materials to the highest end screen plate (302) is installed on the side wall of the screen plate (302), wherein screen holes are provided on the surface of each screen plate (302), wherein the screen holes on the screen plate (302) close to the feed box (303) have a smaller diameter, and the screen holes on the screen plate (302) farther away from the feed box (303) have a larger diameter; Among them, one end of each sieve plate (302) close to the feed box (303) is fixedly connected to an intercepting plate (4), and a plurality of material guide holes (401) are opened in a line at the bottom end of the intercepting plate (4) close to the sieve plate (302) to allow materials to pass through the intercepting plate (4) from the previous sieve plate (302) and enter the next sieve plate (302), so that the materials are evenly distributed on the next sieve plate (302) and move.
2. A multi-stage grading screen screening device according to claim 1, characterized in that: A feed hopper (2) is fixedly mounted on the top of the box body (1) above the feed box (303), and an outlet of the feed hopper (2) is connected to the inner cavity of the feed box (303) via a hose (201).
3. A multi-stage grading screen screening device according to claim 1, characterized in that: A motor (5) is fixedly installed inside the box (1), and a flywheel (6) is fixedly connected to the output shaft of the motor (5). A connecting rod (7) is rotatably connected to the surface of the flywheel (6) at a position away from the center of the flywheel (6), and the other end of the connecting rod (7) is rotatably connected to the side wall of the frame (301). When the motor (5) is running, the flywheel (6) drives the frame (301) to swing through the connecting rod (7).
4. A multi-stage grading screen screening device according to claim 3, characterized in that: A plurality of tracks (8) are arranged on the inner wall of the box body (1), and the frame (301) is slidably connected inside the tracks (8).
5. A multi-stage grading screen screening device according to claim 3 or 4, characterized in that: A baffle plate (9) adapted to the interception plate (4) is fixedly connected to the inner top of the box body (1); the baffle plate (9) is fitted on the side wall of the corresponding interception plate (4); and a second material guide hole (901) is provided at the bottom of the baffle plate (9); when the frame (301) swings, the second material guide hole (901) and the first material guide hole (401) are alternately switched between a staggered state and an aligned state.
6. A multi-stage grading screen screening device according to claim 1, characterized in that: A support plate (10) is provided below each sieve plate (302), a material receiving box (11) is placed on the support plate (10), and one end of the material receiving box (11) passes through the box body (1) and extends to the outside.
7. A multi-stage grading screen screening device according to claim 6, characterized in that: A handle (12) is fixedly connected to the outer end of the material receiving box (11) for conveniently pulling out the material receiving box (11).
8. A multi-stage grading screen screening device according to claim 6 or 7, characterized in that: A material guide wall (13) capable of guiding the screened material into the material receiving box (11) is arranged on the side wall of the frame (301) and located above the material receiving box (11), and the bottom of the material guide wall (13) is inclined toward the inner cavity of the material receiving box (11).