A multi-stage vibrating screen grading and feeding structure
By designing a graded feeding structure with a main feed hopper and a secondary feed hopper in the vibrating screen, the problem of refeeding affecting normal feeding in traditional vibrating screens is solved, achieving efficient multi-stage screening and improving screening effect.
Patent Information
- Application Number
- CN202521822085.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-26
AI Technical Summary
Traditional vibrating screens only have one feeding structure. Materials that need to be fed again must pass through one screen plate again, which affects the normal feeding and reduces the working efficiency of the vibrating screen.
The design incorporates a multi-stage vibrating screen feeding structure, including a main feed hopper and a secondary feed hopper. Material being re-fed skips the first screen plate and is screened again through the second and third screen plates, thus avoiding disruption to normal feeding.
To ensure the working effect of the vibrating screen, the material is screened again by two or three layers of screen plates to avoid affecting the normal feeding and improve the screening efficiency.
Smart Images
Figure CN224673175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibrating screen feeding technology, specifically to a multi-level vibrating screen grading feeding structure. Background Technology
[0002] Multi-stage vibrating screens are efficient and precise particle material grading equipment, widely used in mining, chemical, building materials, and grain processing industries. Their working principle is based on the excitation force generated by a vibrating motor or exciter, causing high-frequency vibration on the screen surface. The material then undergoes a jumping motion on the screen surface, achieving the separation of particles of different sizes. The screen typically consists of 2-5 layers of screens with different aperture sizes, with the upper layer having larger apertures and decreasing apertures layer by layer, forming a precise grading system. During operation, a problem arises where the material has high moisture content and viscosity, leading to poor screening between the second and third screen layers. This portion of material needs to be re-screened. Traditional vibrating screens usually only have one feed structure; the re-feeding material needs to pass through another screen layer, which affects the normally fed material, reducing the screen's efficiency. Utility Model Content
[0003] The purpose of this utility model is to provide a multi-level vibrating screen grading and feeding structure to solve the problem mentioned in the background art that traditional vibrating screens usually only have one feeding structure, and the re-feeding material needs to pass through one layer of screen plate again. The re-feeding material will affect the normally fed material, resulting in a reduction in the working effect of the vibrating screen.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage vibrating screen grading and feeding structure, including a main feed hopper, a discharge hood connected to the lower end of the main feed hopper, a feed hood provided at the upper end of the main feed hopper, a feed baffle provided at the upper end of the feed hood, a secondary feed hopper provided on one side of the outer surface of the main feed hopper, the upper end of the secondary feed hopper extending to the outer surface of the feed hood, a secondary feed trough provided on the outer side wall of the secondary feed hopper inclined outward, a feed inlet provided on the upper wall of the secondary feed trough and the upper end of the side wall of the secondary feed hopper, a secondary discharge hood connected to the lower end of the secondary feed trough, and a discharge trough connected to the lower end of the secondary discharge hood.
[0005] Preferably, both the discharge hood and the inlet hood are trapezoidal funnel structures, the lower end of the discharge hood is connected to the discharge port, and the output end of the discharge trough is correspondingly located below the discharge port.
[0006] Preferably, the main feed hopper has a cuboid structure, the secondary feed hopper is configured with dimensions corresponding to the long side of the main feed hopper, and the inner wall of the secondary feed hopper is fixedly connected to the outer wall of the main feed hopper.
[0007] Preferably, the sidewall of the feed inlet is correspondingly arranged with the outer surface of the sidewall of the feed hood, and the sidewall of the auxiliary feed trough is arranged at a 45° angle with the sidewall of the auxiliary feed hopper.
[0008] Preferably, the lower end of the discharge trough is bent inward at a 45° angle to the secondary discharge hood.
[0009] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional vibrating screen structure with only one feeding structure, a graded feeding structure is designed so that the re-feeding material skips the first screen plate and is directly fed between the second and third screen plates. The re-feeding material is screened again by the second and third screen plates. The re-feeding material will not affect the normally fed material, thus ensuring the working effect of the vibrating screen. Attached Figure Description
[0010] Figure 1 This is an isometric view of the main structure of this utility model;
[0011] Figure 2 This is an isometric sectional view of the main structure of this utility model;
[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;
[0013] Figure 4 This is a left-side view of the main structure of this utility model;
[0014] Figure 5 This is a left sectional view of the main structure of this utility model.
[0015] In the diagram: 1-Main feed hopper, 2-Discharge hood, 3-Feed hood, 4-Feed baffle, 5-Secondary feed hopper, 6-Secondary feed trough, 7-Feed inlet, 8-Secondary discharge hood, 9-Discharge trough, 10-Discharge outlet. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-5This utility model provides a multi-level vibrating screen grading and feeding structure, including a main feed hopper 1, a discharge hood 2 connected to the lower end of the main feed hopper 1, a feed hood 3 provided at the upper end of the main feed hopper 1, a feed baffle 4 provided at the upper end of the feed hood 3, a secondary feed hopper 5 provided on one side of the outer surface of the main feed hopper 1, the upper end of the secondary feed hopper 5 extending to the outer surface of the feed hood 3, a secondary feed groove 6 provided on the outer side wall of the secondary feed hopper 5 inclined outward, a feed inlet 7 opened on the upper wall of the secondary feed groove 6 and the upper end of the side wall of the secondary feed hopper 5, a secondary discharge hood 8 connected to the lower end of the secondary discharge hood 2, and a discharge groove 9 connected to the lower end of the secondary discharge hood 2.
[0018] In use, the main feed hopper 1 is positioned at the top of the first screen plate of the multi-stage vibrating screen. The material to be screened is fed into the main feed hopper 1 through the feed hood 3. A feed baffle 4 is installed around the upper edge of the feed hood 3 to reduce material splashing. The material inside the main feed hopper 1 is fed onto the first screen plate through the discharge hood 2, where it is screened by the multi-stage screen plates of the vibrating screen and output. The material between the second and third screen plates of the vibrating screen is poured back into the auxiliary feed hopper 5. An auxiliary feed chute 6 is installed on the outside of the auxiliary feed hopper 5. A feed inlet 7 is provided on the feed trough 6. The material between the 2nd and 3rd screen plates is fed into the interior of the auxiliary feed hopper 5 through the feed inlet 7. An auxiliary discharge hood 8 is provided in the middle section of the auxiliary feed hopper 5, and a discharge chute 9 is provided at the lower end of the auxiliary discharge hood 8. The discharge chute 9 is located between the 2nd and 3rd screen plates of the vibrating screen. The material that needs to be screened again is output between the 2nd and 3rd screen plates for further screening. While not affecting the normal screening operation, the material that has not been screened between the 2nd and 3rd screen plates is screened again.
[0019] Both the discharge hood 2 and the inlet hood 3 are trapezoidal funnel structures. The lower end of the discharge hood 2 is connected to the discharge port 10. The output end of the discharge trough 9 is correspondingly located below the discharge port 10. The material inside the main inlet hopper 1 is output to the first layer of the vibrating screen for screening through the discharge hood 2 and the discharge port 10.
[0020] The main feed hopper 1 has a cuboid structure. The secondary feed hopper 5 is configured to correspond to the dimensions of the long side of the main feed hopper 1. The inner wall of the secondary feed hopper 5 is fixedly connected to the outer wall of the main feed hopper 1 to ensure the connection strength between the main feed hopper 1 and the secondary feed hopper 5 and to ensure the overall strength of the feeding structure.
[0021] The sidewall of the feed inlet 7 is correspondingly arranged to the outer surface of the sidewall of the feed hood 3, and the sidewall of the auxiliary feed trough 6 is arranged at a 45° angle to the sidewall of the auxiliary feed hopper 5, so that the material that has not been screened between the 2nd and 3rd sieve plates can be fed into the interior of the auxiliary feed hopper 5 through the feed inlet 7 and the auxiliary feed trough 6, and then output again between the 2nd and 3rd sieve plates.
[0022] The lower end of the discharge trough 9 is bent inward at a 45° angle to the auxiliary discharge cover 8, ensuring that the output end of the discharge trough 9 can be positioned between the 2nd and 3rd sieve plates.
[0023] Although embodiments of the present invention have been shown and described, 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 multi-stage vibrating screen grading and feeding structure, characterized in that: The main feed hopper (1) is connected to a discharge hood (2) at its lower end. A feed hood (3) is provided at the upper end of the main feed hopper (1). A feed baffle (4) is provided at the upper end of the feed hood (3). A secondary feed hopper (5) is provided on one side of the outer surface of the main feed hopper (1). The upper end of the secondary feed hopper (5) extends to the outer surface of the feed hood (3). A secondary feed groove (6) is provided on the outer side wall of the secondary feed hopper (5) at an outward inclination. A feed inlet (7) is provided on the upper wall of the secondary feed groove (6) and the upper end of the side wall of the secondary feed hopper (5). A secondary discharge hood (8) is connected to the lower end of the secondary discharge hood (8). A discharge groove (9) is connected to the lower end of the secondary discharge hood (8).
2. The multi-stage vibrating screen grading and feeding structure according to claim 1, characterized in that: Both the discharge hood (2) and the inlet hood (3) are trapezoidal funnel structures. The lower end of the discharge hood (2) is connected to the discharge port (10), and the output end of the discharge trough (9) is correspondingly located below the discharge port (10).
3. The multi-stage vibrating screen grading and feeding structure according to claim 1, characterized in that: The main feed hopper (1) has a cuboid structure. The secondary feed hopper (5) is configured to correspond to the dimensions of the long side of the main feed hopper (1). The inner wall of the secondary feed hopper (5) is fixedly connected to the outer wall of the main feed hopper (1).
4. The multi-stage vibrating screen grading and feeding structure according to claim 1, characterized in that: The sidewall of the feed inlet (7) is correspondingly arranged with the outer surface of the sidewall of the feed hood (3), and the sidewall of the auxiliary feed trough (6) is arranged at a 45° angle with the sidewall of the auxiliary feed hopper (5).
5. The multi-stage vibrating screen grading and feeding structure according to claim 1, characterized in that: The lower end of the discharge trough (9) is bent inward and set at a 45° angle with the auxiliary discharge cover (8).