A limestone crushing and screening system
By setting a distribution hopper and screen plate at the bottom of the vibrating feeder, the screening system achieves the separation of limestone from soil and sand, solves the problem of small-diameter limestone being discharged with impurities, and improves material utilization and system efficiency.
Patent Information
- Application Number
- CN202522086582.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-28
AI Technical Summary
In existing limestone crushing and screening systems, limestone raw materials are crushed during transportation, resulting in some small-diameter limestone particles being discharged along with impurities such as mud and sand, increasing subsequent separation costs.
A distribution hopper is installed at the bottom of the vibrating feeder. The distribution hopper is equipped with a screen plate and a filter screen. The screen plate separates the soil and sand, and some limestone particles are returned to the crushing production line. Particle size control is achieved through multi-stage crushing and screening.
This improved material utilization, reduced subsequent separation costs, and enhanced the efficiency and finished product quality of the limestone crushing and screening system.
Smart Images
Figure CN224672827U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of limestone production technology, specifically to a limestone crushing and screening system. Background Technology
[0002] The limestone crushing and screening system is a key raw material processing link in the production of lime and cement. It is mainly used to crush and screen limestone into particle sizes that meet the requirements of subsequent calcination or grinding processes. Jaw crushers are usually used for primary coarse crushing, followed by impact crushers for fine crushing, and vibrating screens for grading. Oversized materials can be returned for secondary crushing.
[0003] Currently, jaw crushers are typically fed using a vibrating screen feeder. During feeding, the screen bars at the bottom of the vibrating feeder trough separate fine particles (such as mud, sand, and fine powder) from the material. The separated material is then directly fed into the conveyor belt or hopper below. Limestone raw materials are crushed during transport, resulting in smaller limestone particles. Some of these smaller particles are also separated by the screen bars. If they are discharged along with impurities such as mud and sand, it will increase the cost of subsequent separation. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a limestone crushing and screening system to address the above-mentioned shortcomings.
[0005] To solve the above technical problems, the present invention adopts the following technical solution: A limestone crushing and screening system includes a vibrating feeder, a jaw crusher, an impact crusher, and a vibrating screen. The upper output end of the feed trough of the vibrating feeder is connected to the input end of the jaw crusher. A distribution hopper is provided at the lower part of the feed trough of the vibrating feeder. The bottom of the distribution hopper is provided with a mud and sand outlet and a block outlet. A filter screen for separating the mud and sand outlet and the block outlet is provided inside the distribution hopper. The output end of the jaw crusher is connected to the input end of the impact crusher through a first transmission mechanism, and the block outlet is connected to the input end of the first transmission mechanism. The output end of the impact crusher is connected to the input end of the vibrating screen through a second transmission mechanism.
[0006] Furthermore, a feed hopper is provided on the top of the vibrating feeder.
[0007] Furthermore, the sludge outlet is inclined to the side away from the jaw crusher, while the block outlet is inclined to the side closer to the jaw crusher.
[0008] Furthermore, a guide plate is provided inside the hopper, and the guide plate faces the mud and sand outlet.
[0009] Furthermore, a collection hopper is provided at the bottom of the jaw crusher, and both the output end and the block outlet of the jaw crusher are connected to the collection hopper. The bottom of the collection hopper is connected to the input end of the first transmission mechanism.
[0010] Furthermore, both the first and second transmission mechanisms are belt conveyors.
[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This application provides a distribution hopper at the bottom of the vibrating feeder, which contains a screen plate that can separate soil and sand, allowing some limestone particles to be returned to the crushing production line, thereby improving material utilization.
[0012] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the material distribution hopper.
[0014] The attached diagram lists the components represented by each number as follows: 1. Vibrating feeder; 11. Feed trough; 12. Feed hopper; 2. Jaw crusher; 21. Collecting hopper; 3. Impact crusher; 4. Vibrating screen; 5. Distribution hopper; 51. Sludge outlet; 52. Block outlet; 53. Filter screen; 54. Guide plate; 6. First transmission mechanism; 7. Second transmission mechanism. Detailed Implementation
[0015] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise" and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] like Figure 1 and Figure 2 As shown, a limestone crushing and screening system includes a vibrating feeder 1, a jaw crusher 2, an impact crusher 3, and a vibrating screen 4.
[0018] The top of the vibrating feeder 1 is provided with a feed hopper 12. The bottom of the feed hopper 12 is connected to the upper part of the feeding trough 11 of the vibrating feeder 1. The lower part of the feeding trough 11 is provided with a screen bar, which can separate fine particles in the material. The output end of the feeding trough 11 is connected to the input end of the jaw crusher 2, and a distribution hopper 5 is provided below the screen bar.
[0019] The hopper 5 is used to receive particles separated by the screen bars. The bottom of the hopper 5 is provided with a mud and sand outlet 51 and a block outlet 52. The hopper 5 is provided with a filter screen 53 for separating the mud and sand outlet 51 and the block outlet 52. Specifically, the mud and sand outlet 51 is inclined to the side away from the jaw crusher 2, and the block outlet 52 is inclined to the side closer to the jaw crusher 2; a guide plate 54 is provided in the distribution hopper 5, which faces the mud and sand outlet 51. The guide plate 54 can guide the particles close to the block outlet 52 to the filter screen 53 so that the filter screen 53 can fully screen the particles in the distribution hopper 5.
[0020] The jaw crusher 2 is used for preliminary crushing of materials. The output end of the jaw crusher 2 is connected to the input end of the impact crusher 3 through the first transmission mechanism 6, and the block outlet 52 is connected to the input end of the first transmission mechanism 6. Specifically, a collection hopper 21 is provided at the bottom of the jaw crusher 2. Both the output end of the jaw crusher 2 and the block outlet 52 are connected to the collection hopper 21, and the bottom of the collection hopper 21 is connected to the input end of the first transmission mechanism 6.
[0021] The impact crusher 3 is used to further crush materials. The output end of the impact crusher 3 is connected to the input end of the vibrating screen 4 through the second transmission mechanism 7.
[0022] The vibrating screen 4 is equipped with multiple layers of screens. Different layers of screens can separate materials with different particle sizes. Materials that do not pass through the top layer of screens will be re-transported to the impact crusher 3 for crushing. Materials that pass through the screens will be transported to the finished product stockpile by belt conveyor.
[0023] Preferably, both the first transmission mechanism 6 and the second transmission mechanism 7 are belt conveyors.
[0024] Workflow: Raw materials are poured into the feed hopper by a transport vehicle, and the vibrating feeder 1 conveys the material to the jaw crusher, separating the particles in the material (including small-sized limestone, soil, sand and gravel). The jaw crusher performs preliminary crushing of limestone to reduce it to below the first preset particle size. The crushed limestone is discharged into the collection hopper 21. The separated particles enter the distribution hopper 5 and are separated from the soil and sand by the filter screen 53. The filter screen will block limestone of a certain particle size. The separated limestone will be discharged into the collection hopper 21 through the block outlet 52. The soil and sand separated from the mud and sand outlet 51 will be discharged through the conveyor belt (not shown in the figure). The material in the hopper 21 is conveyed to the impact crusher 3 through the first conveying mechanism 6, and the impact crusher 3 crushes the material to below the second preset particle size. The crushed material is conveyed to the vibrating screen 4 through the second transmission mechanism 7 so that the material that meets the requirements can be directly screened out and transported to the finished stone stockpile as finished stone. The material that does not meet the requirements will be conveyed back to the impact crusher 3 for further crushing.
[0025] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.
Claims
1. A limestone crushing and screening system, characterized in that, The system includes a vibrating feeder (1), a jaw crusher (2), an impact crusher (3), and a vibrating screen (4). The upper output end of the feeding trough (11) of the vibrating feeder (1) is connected to the input end of the jaw crusher (2). A distribution hopper (5) is provided at the lower part of the feeding trough (11) of the vibrating feeder (1). A mud and sand outlet (51) and a block outlet (52) are provided at the bottom of the distribution hopper (5). A filter screen (53) is provided inside the distribution hopper (5) to separate the mud and sand outlet (51) and the block outlet (52). The output end of the jaw crusher (2) is connected to the input end of the impact crusher (3) through the first transmission mechanism (6), and the block outlet (52) is connected to the input end of the first transmission mechanism (6); The output end of the impact crusher (3) is connected to the input end of the vibrating screen (4) through the second transmission mechanism (7).
2. The limestone crushing and screening system according to claim 1, characterized in that, The top of the vibrating feeder (1) is provided with a feed hopper (12).
3. The limestone crushing and screening system according to claim 1, characterized in that, The silt outlet (51) is inclined to the side away from the jaw crusher (2), and the block outlet (52) is inclined to the side closer to the jaw crusher (2).
4. The limestone crushing and screening system according to claim 3, characterized in that, The material distribution hopper (5) is provided with a guide plate (54), which faces the mud and sand outlet (51).
5. The limestone crushing and screening system according to claim 1, characterized in that, The jaw crusher (2) is provided with a collection hopper (21) at the bottom. The output end of the jaw crusher (2) and the block outlet (52) are both connected to the collection hopper (21). The bottom of the collection hopper (21) is connected to the input end of the first transmission mechanism (6).
6. The limestone crushing and screening system according to claim 1, characterized in that, Both the first transmission mechanism (6) and the second transmission mechanism (7) are belt conveyors.