A screen structure

Abstract

The utility model relates to a screen structure relates to the technical field of screening equipment, it contains mounting frame body, first screen mesh is detachably assembled on mounting frame body, the input end of first screen mesh is used for receiving screening material, first screen mesh is provided with a plurality of first mesh, and second screen mesh is provided with one or more, and is detachably assembled on the side away from material of first screen mesh, and second screen mesh is provided with a plurality of second mesh, second screen mesh is provided with two, and the area of second screen mesh is less than the area of first screen mesh, compared with the prior art single layer screen mesh, the above technical scheme has the advantages of accurate screening material, reduces cost and improves screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a screen structure. Background Technology

[0002] Currently, screening equipment is widely used in mining, chemical, food processing, building materials and other fields. It uses the principle of vibration screening to classify materials according to particle size, and the key component for achieving this function is the screen. In existing technical solutions, screening equipment generally uses a single-layer screen as the core screening structure. When material is transferred to the end of the screen (i.e., the material input end), due to the limited dispersion efficiency of the vibration mechanism, the material cannot quickly and evenly spread on the screen surface, but instead accumulates continuously in the end area. The accumulated material generates continuous and concentrated friction with the edge of the screen end, and the weight of the accumulated material causes the screen end to bear a local load far exceeding that of other areas of the screen, making the screen end extremely prone to damage. After the screen end is damaged, the mesh structure is destroyed, making it impossible to accurately intercept and screen material particles by size. Frequent screen replacements are required, increasing the cost of screen consumables and thus affecting continuous screening efficiency. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a screen structure that solves at least one of the aforementioned technical problems, and has the advantages of accurate material screening, reduced costs, and improved screening efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a screen structure, comprising: Mounting frame; A first screen, detachably mounted on the mounting frame, has an input end for receiving screened materials and a plurality of first mesh openings. The second screen has one or more detachable parts attached to the side of the first screen away from the material, and the second screen has a plurality of second mesh openings.

[0005] In a further embodiment of this invention, two second screens are provided.

[0006] The present invention further comprises that the area of ​​the second screen is smaller than the area of ​​the first screen.

[0007] The present invention is further provided that the aperture of the second mesh is larger than the aperture of the first mesh.

[0008] The present invention further provides that the first sieve is 12-20 mesh.

[0009] The present invention further provides that the second sieve is 6-12 mesh.

[0010] The present invention further includes the following: the mounting frame includes a frame, a bracket detachably mounted on the side of the frame away from the second screen, and fasteners disposed between the frame and the bracket; both the first screen and the second screen are disposed between the frame and the bracket. The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, a first screen and a second screen are sequentially arranged on the mounting frame from top to bottom. Both the first screen and the second screen are detachable and can be quickly replaced when the screen is damaged. The input end of the first screen is close to the belt conveyor and is used to receive the screened material. It is provided with a number of first mesh holes. The second screen is provided with a number of second mesh holes. The first mesh holes and the second mesh holes cooperate to screen the material, thereby achieving accurate screening. When the material input end of the first screen is prone to local damage due to friction or load, the second screen can directly receive the material and continue to complete the screening operation. This reduces the downtime caused by frequent screen replacement due to damage of the first screen, reduces costs, and improves screening efficiency. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the sieve structure; Figure 2 This is an exploded view of the sieve structure.

[0013] Explanation of reference numerals in the attached drawings: 100, mounting frame; 110, frame; 120, bracket; 130, fastener; 200, first screen; 210, first mesh; 300, second screen; 310, second mesh. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0016] This embodiment relates to a screen structure, as shown in the reference... Figures 1-2The system includes: a mounting frame 100, a first screen 200, and a second screen 300. The mounting frame 100 supports and fixes the first screen 200 and the second screen 300 to prevent misalignment or loosening that could affect screening accuracy. The first screen 200 is detachably mounted on the mounting frame 100. The input end of the first screen 200 receives material conveyed from the belt conveyor, serving as the main screen layer directly receiving the material and achieving material size screening. The first screen 200 has several uniformly arranged first mesh openings 210 for preliminary particle size screening of the material. Material conforming to the size of the first mesh openings 210 can fall into the second screen 300 below. Specifically, the second screen 300 serves as an auxiliary screen layer for the first screen 200. Two second screens are provided, each detachably mounted on the underside of the first screen 200, to receive material falling from the first screen 200 and continue screening. Furthermore, the second screen 300 can share the weight of the material below the first screen 200, reducing the local load-bearing pressure on the first screen 200. In other embodiments, the second screen 300 may also have one, three, or more. The second screen 300 has a plurality of second mesh openings 310 evenly distributed on it, ensuring that materials of the correct particle size can be smoothly conveyed downwards without interrupting the screening process and preventing materials from falling into the next layer of screen structure. Therefore, the problem of screening failure due to damage to a single-layer screen is solved. Even if the first screen 200 is damaged, the second screen 300 can seamlessly continue screening, ensuring accurate material particle size. Moreover, by sharing the load and reducing the friction between the first screen 200 and the material, the wear rate of the first screen 200 is slowed down, indirectly reducing the replacement frequency of the first screen 200, lowering costs, and improving screening efficiency.

[0017] In this embodiment, refer to Figure 2 The area of ​​the second screen 300 is smaller than that of the first screen 200. The second screen 300 covers the weak area of ​​the material input end of the first screen 200, preventing it from failing to screen after breakage, and at the same time saving material costs.

[0018] In this embodiment, the aperture of the second mesh 310 is larger than that of the first mesh 210. The particle size of the material screened by the first screen 200 is smaller than or equal to the aperture of the first mesh 210, while the aperture of the second mesh 310 is larger, so that the material can pass through the second mesh 310 without obstruction. The material will not be stuck or clogged due to the second mesh 310 being too small. This ensures that the material transfer process from the first screen 200 to the next layer of screen structure is continuous and smooth, avoiding the decrease in screening efficiency or equipment overload caused by clogging.

[0019] Specifically, in this embodiment, the first screen 200 has a mesh size of 14, which meets the sieving accuracy requirements. In other embodiments, the mesh size of the first screen 200 can also be 12, 13, 15, 16, 17, 18, 19, 20, etc., as long as the range of the first screen 200 is between 12 and 20 mesh, there is no need to specifically limit it here.

[0020] Specifically, in this embodiment, the second screen 300 has an 8-mesh size to ensure that the material flow is not blocked. In other embodiments, the mesh size of the second screen 300 can also be 6, 7, 9, 10, 11, 12, etc., as long as the range of the second screen 300 is between 6 and 12 mesh, there is no need to be specifically limited here.

[0021] In this embodiment, refer to Figure 2 The mounting frame 100 includes a frame 110, a bracket 120, and fasteners 130. The frame 110 is positioned at the top of the first screen 200. The bracket 120 is detachably mounted on the side of the frame 110 away from the second screen 300. Multiple horizontal and vertical bars are crisscrossed on the bracket 120, forming a grid support structure to provide multi-point support for the screen, dispersing the pressure of the material on the screen and preventing sagging. Both the first screen 200 and the second screen 300 are positioned between the frame 110 and the bracket 120 to clamp the two screens, preventing loosening during screening and ensuring screening accuracy and efficiency. Fasteners 130 are positioned between the frame 110 and the bracket 120 to ensure a tight fixation of the screen edges. Specifically, in this embodiment, the fastener 130 is a bolt and nut assembly for easy and quick screen replacement. In other embodiments, the fastener 130 may also be a snap-fit ​​type or a lever clamp, or other components.

[0022] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A screen structure, characterized in that, include: Mounting frame (100); The first screen (200) is detachably mounted on the mounting frame (100). The input end of the first screen (200) is used to receive the screened material. The first screen (200) is provided with a plurality of first mesh holes (210). as well as The second screen (300) is provided with one or more detachably assembled to the side of the first screen (200) away from the material, and the second screen (300) is provided with a plurality of second mesh holes (310); The aperture of the second mesh (310) is larger than the aperture of the first mesh (210).

2. The screen structure according to claim 1, characterized in that, There are two second screens (300).

3. The screen structure according to claim 1, characterized in that, The area of ​​the second screen (300) is smaller than the area of ​​the first screen (200).

4. The screen structure according to claim 1, characterized in that, The first screen (200) is 12-20 mesh.

5. The screen structure according to claim 1, characterized in that, The second sieve (300) has a mesh size of 6-12.

6. The screen structure according to claim 1, characterized in that, The mounting frame (100) includes: a frame (110), a bracket (120) detachably mounted on the side of the frame (110) away from the second screen (300), and a fastener (130) disposed between the frame (110) and the bracket (120); the first screen (200) and the second screen (300) are both disposed between the frame (110) and the bracket (120).

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