Wear-resistant bar screen
By introducing ball bearings and return springs into the bar screen, friction is reduced, solving the problem of wear on the bar screen under high load and achieving efficient and precise screening results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINYU ANTAI METALLURGICAL EQUIP CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-22
AI Technical Summary
Existing bar screens suffer severe wear under high-load and harsh environments, resulting in reduced screening accuracy and efficiency, failing to meet the high-efficiency and precise screening requirements of industrial production.
The structure employs ball bearings and return springs. By using guide bars and an outer cylinder, the friction between the material and the bars is reduced. The ball bearings improve the smoothness of rotation, and the return springs further reduce friction and extend service life.
It effectively reduces the friction between the material and the bars, improves the wear resistance and service life of the screen, and ensures efficient and accurate screening.
Smart Images
Figure CN224265820U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen technology, and in particular to a wear-resistant bar screen. Background Technology
[0002] In modern industrial production, especially in mining, coal screening, and building aggregate processing, material screening is a crucial process. Bar screens, as commonly used components of screening equipment, play a key role in separating materials of different particle sizes. While bar screens offer improved structural strength compared to ordinary screens and can withstand greater material impact, the surface of the bars still suffers severe wear due to continuous friction and impact under long-term, high-load, and harsh working conditions. Once the bars wear down to a certain extent, the screening accuracy and efficiency of the screen will significantly decrease, failing to meet the requirements of efficient and precise screening in industrial production.
[0003] With the continuous expansion of industrial production scale and the increasing demand for production efficiency, developing a new type of bar screen with high wear resistance and long service life has become an urgent technical problem to be solved in order to meet the urgent needs of various industries for efficient and stable operation of material screening. Utility Model Content
[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a wear-resistant bar screen.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A wear-resistant bar screen includes a main frame. Ball bearings are embedded in both the left and right ends of the main frame. A middle plate is longitudinally fixed in the middle of the main frame, and a middle ball bearing is embedded in the middle plate laterally. A left bar is embedded laterally between the left side of the middle plate and the left side of the main frame, and a right bar is embedded laterally between the right side of the middle plate and the right side of the main frame. Guide bars are fixed to the upper, lower, front, and rear ends of the outer walls of the left and right bars. Return springs are fixedly connected to the left and right ends of the guide bars. An outer cylinder is nested on the outer side of the left and right bars. Connecting columns are fixedly connected to the left side of the left bar and the right side of the right bar.
[0007] Preferably, the left and right ends of the left bar are respectively embedded between the ball bearing on the left side of the main frame and the middle ball bearing, and the left and right ends of the right bar are respectively embedded between the middle ball bearing and the ball bearing on the right side of the main frame.
[0008] Preferably, the left and right bars are symmetrically arranged around the longitudinal central axis of the middle plate, and the middle parts of the left and right bars are both on the same horizontal plane.
[0009] Preferably, the left and right bars are arranged in 7-12 sets at equal intervals from front to back in the main frame, and the left and right bars rotate horizontally between the ball bearing and the middle ball bearing.
[0010] Preferably, the upper and lower front and rear ends of the outer cylinder are provided with lateral openings and limit grooves. The vertical sectional area of the limit groove is the same as that of the guide bar. The guide bars on the outer walls of the left and right bars are precisely embedded in the middle of the limit groove.
[0011] Preferably, the limiting groove of the outer cylinder slides horizontally left and right on the outer wall of the guide bar, and the other end of the return spring on the left and right sides of the guide bar is connected to the left and right ends of the limiting groove.
[0012] During the material screening process, the material falls through the sieve holes formed between the front and rear ends of the left and right bars. When the material falls vertically and impacts the left or right bar, it will first come into contact with the outer cylinder of the left or right bar. When the outer cylinder is under force, it will drive the left or right bar to rotate between the ball bearing and the middle ball bearing through the guide bar, reducing the friction between the material and the left or right bar. When the material falls to the left or right and impacts the outer cylinder, the outer cylinder will move to the left or right on the outside of the left or right bar, squeezing and pulling the return spring on the outside of the guide bar to deform, which also reduces the friction between the material and the left or right bar. The friction generated by the material contacting the left and right bars when falling is small, which effectively improves the wear resistance of the device and further extends the service life of the device. Attached Figure Description
[0013] Figure 1 This is a front view of the overall structure of this utility model;
[0014] Figure 2 This is a front cross-sectional view of the overall structure of this utility model;
[0015] Figure 3 This is a partial structural diagram of the left and right bars in this utility model;
[0016] Figure 4 This is a front cross-sectional view of a partial structure of the right bar in this utility model.
[0017] Legend:
[0018] Main frame 1, ball bearing 101, middle plate 2, middle ball bearing 201, left bar 3, right bar 4, guide bar 5, return spring 501, outer cylinder 6, connecting column 601. Detailed Implementation
[0019] Example 1, referring to Figures 1-4A wear-resistant bar screen includes a main frame 1. Ball bearings 101 are embedded in the left and right ends of the main frame 1. A middle plate 2 is longitudinally fixed in the middle of the main frame 1. A middle ball bearing 201 is embedded in the middle plate 2 laterally. A left bar 3 is embedded in the left side of the middle plate 2 and the left side of the main frame 1. A right bar 4 is embedded in the right side of the middle plate 2 and the right side of the main frame 1. Guide bars 5 are fixed to the upper, lower, front and rear ends of the outer walls of the left bar 3 and the right bar 4. Return springs 501 are fixedly connected to the left and right ends of the guide bars 5. An outer cylinder 6 is nested on the outer side of the left bar 3 and the right bar 4. A connecting column 601 is fixedly connected to the left side of the left bar 3 and the right side of the right bar 4.
[0020] The left and right ends of the left bar 3 are respectively embedded between the ball bearing 101 on the left side of the main frame 1 and the middle ball bearing 201, and the left and right ends of the right bar 4 are respectively embedded between the middle ball bearing 201 and the ball bearing 101 on the right side of the main frame 1.
[0021] The main function of the ball bearing 201 and the ball bearing 101 is to improve the smoothness of rotation of the left bar 3 and the right bar 4;
[0022] During the material screening process, the material falls through the sieve holes formed between the front and rear ends of the left bar 3 and the front and rear ends of the right bar 4.
[0023] The left bar 3 and the right bar 4 are symmetrically arranged around the longitudinal central axis of the middle plate 2, and the middle parts of the left bar 3 and the right bar 4 are on the same horizontal plane.
[0024] There are 7-12 sets of left bar 3 and right bar 4 equidistantly arranged from front to back in the main frame 1. The left bar 3 and right bar 4 rotate horizontally between the ball bearing 101 and the middle ball bearing 201.
[0025] When the material falls vertically and impacts the left bar 3 or the right bar 4, the material will first come into contact with the outer cylinder 6 outside the left bar 3 or the right bar 4. When the outer cylinder 6 is under force, it will drive the left bar 3 or the right bar 4 to rotate between the ball bearing 101 and the middle ball bearing 201 through the guide bar 5. This reduces the friction between the material and the left bar 3 and the right bar 5, effectively improves the wear resistance of the device, and further improves the service life of the device.
[0026] Example 2 differs from Example 1 in that, in this example, the upper, lower, front and rear ends of the outer cylinder 6 are horizontally opened with limiting grooves, and the vertical sectional area of the limiting groove is the same as the vertical sectional area of the guide bar 5. The guide bars 5 on the outer walls of the left bar 3 and the right bar 4 are precisely embedded in the middle of the limiting groove.
[0027] The guide bar 5 guides and limits the left and right movement of the outer cylinder 6 by closely abutting the limiting groove of the outer cylinder 6, so as to prevent the outer cylinder 6 from being misaligned or tilted during the left and right sliding process.
[0028] The limiting groove of the outer cylinder 6 slides left and right in the horizontal direction on the outer wall of the guide bar 5, and the other end of the return spring 501 on the left and right sides of the guide bar 5 is connected to the left and right ends of the limiting groove.
[0029] When the material tilts to the left or right and falls into the outer cylinder 6, the outer cylinder 6 is subjected to force and moves to the left or right on the outside of the left bar 3 or right bar 4. This squeezes and pulls the return spring 501 on the outside of the guide bar 5 on the left bar 3 or right bar 4, which also reduces the friction between the material and the left bar 3 and right bar 4. The friction generated when the material falls and contacts the left bar 3 and right bar 4 is small, which effectively improves the wear resistance of the device and further improves the service life of the device.
[0030] When the outer cylinder 6 is not subjected to force after the return spring 501 is deformed, the return spring 501 pushes or pulls the outer cylinder 6 to move along the guide bar 5 on the outer wall of the left bar 3 or the right bar 4, so that the outer cylinder 6 can quickly return to its original position.
[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.
Claims
1. A wear-resistant bar screen, comprising a main frame (1), characterized in that, Ball bearings (101) are embedded in the left and right ends of the main frame (1). A middle plate (2) is fixed longitudinally in the middle of the main frame (1). A middle ball bearing (201) is embedded in the middle plate (2) laterally. A left bar (3) is embedded between the left side of the middle plate (2) and the left side of the main frame (1). A right bar (4) is embedded between the right side of the middle plate (2) and the right side of the main frame (1). Guide bars (5) are fixed at the upper, lower, front and rear ends of the outer walls of the left bar (3) and the right bar (4). Return springs (501) are fixedly connected to the left and right ends of the guide bars (5). An outer cylinder (6) is nested on the outer side of the left bar (3) and the right bar (4). A connecting column (601) is fixedly connected to the left side of the left bar (3) and the right side of the right bar (4).
2. The wear-resistant bar screen according to claim 1, characterized in that, The left and right ends of the left bar (3) are respectively embedded between the ball bearing (101) on the left side of the main frame (1) and the middle ball bearing (201), and the left and right ends of the right bar (4) are respectively embedded between the middle ball bearing (201) and the ball bearing (101) on the right side of the main frame (1).
3. The wear-resistant bar screen according to claim 2, characterized in that, The left bar (3) and the right bar (4) are symmetrically arranged around the longitudinal central axis of the middle plate (2), and the middle parts of the left bar (3) and the right bar (4) are both on the same horizontal plane.
4. The wear-resistant bar screen according to claim 2, characterized in that, The left bar (3) and right bar (4) are arranged in 7-12 sets at equal intervals from front to back in the main frame (1), and the left bar (3) and right bar (4) rotate horizontally between the ball bearing (101) and the middle ball bearing (201).
5. The wear-resistant bar screen according to claim 1, characterized in that, The upper, lower, front and rear ends of the outer cylinder (6) are all horizontally opened with limiting grooves. The vertical tangential area of the limiting groove is the same as the vertical tangential area of the guide bar (5). The guide bars (5) on the outer walls of the left bar (3) and the right bar (4) are both embedded in the middle of the limiting groove.
6. The wear-resistant bar screen according to claim 5, characterized in that, The limiting groove of the outer cylinder (6) slides left and right in the horizontal direction on the outer wall of the guide bar (5), and the other end of the return spring (501) on the left and right sides of the guide bar (5) is connected to the left and right ends of the limiting groove.