Bar screen for vibrating screen

Abstract

The bar screen for the vibrating screen comprises a main frame, mounting plates are fixed to the left end and the right end of the outer wall of the main frame, limiting columns are vertically embedded into the front end, the rear end, the left end and the right end of the interior of the main frame, inner sliding blocks are embedded into the middles of the limiting columns, and return springs are embedded into the upper ends and the lower ends of the outer sides of the limiting columns. Supporting plates are fixed to the ends, close to the middle of the main frame, of the limiting columns, bar columns are embedded into the main frame, fixing plates are embedded into the front, rear, left and right ends of the upper portion of the inner wall of the main frame, limiting plates are fixed to the bottoms of the fixing plates, and limiting bolts are vertically embedded into the middles of the fixing plates. When the bar screen is installed on a vibrating screen, the vibration amplitude is larger, materials can rapidly move and roll over on the surface of the bar screen, the speed of passing through screen holes is increased, then the screening efficiency of the materials is improved, meanwhile, the bar columns can be rapidly replaced and overhauled, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of screen technology, and in particular to a bar screen for use in vibrating screens. Background Technology

[0002] In the field of material screening, vibrating screens, as a highly efficient screening equipment, are widely used in many industries such as mining, metallurgy, coal, and building materials. Their working principle involves using the excitation force generated by a vibrating motor to cause the screen box to vibrate at high frequency, thereby prompting the material to be screened on the screen mesh. Currently, there are many types of screen mesh used in vibrating screens, among which bar screens are favored due to their simple structure and resistance to clogging. However, existing bar screens still have many problems in practical applications of vibrating screens. In the process of traditional vibrating motors driving the bar screens to vibrate and screen materials, the vibration amplitude of the bar screens is relatively small, making it difficult for materials to move and tumble quickly on the bar screen surface, resulting in low filtration efficiency. Furthermore, the installation and disassembly of existing bar screens are cumbersome, requiring a significant amount of manpower and time, which is detrimental to the daily maintenance and repair of the equipment. These problems seriously restrict the application of vibrating screens in actual production. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the above-mentioned background technology by proposing a bar screen for vibrating screens.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bar screen for a vibrating screen includes a main frame. Mounting plates are fixed to the left and right ends of the outer wall of the main frame. Limiting posts are vertically embedded in the front, back, left, and right ends of the main frame. An inner slider is nested in the middle of each limiting post. Return springs are nested in the upper and lower ends of the outer side of each limiting post. A support plate is fixed to the end of each limiting post near the middle of the main frame. Bars are embedded inside the main frame. Fixing plates are embedded in the front, back, left, and right ends of the upper inner wall of the main frame. Limiting plates are fixed to the bottom of each fixing plate. Limiting bolts are vertically embedded in the middle of each fixing plate.

[0006] Preferably, the upper interior of the support plate and the lower interior of the limiting plate are provided with limiting grooves, and the outer side of the bar column is precisely embedded in the limiting grooves of the front, rear, left and right end support plates.

[0007] Preferably, the limiting groove at the bottom of the limiting plate is nested on the outer side of the bar column, and the middle part of the limiting plate and the middle part of the support plate are on the same vertical horizontal plane.

[0008] Preferably, the bottom end of the limiting plate is close to the top of the support plate, and the fixing plate is fixedly connected to the support plate by a limiting bolt.

[0009] Preferably, the main frame has vertical openings at the front, rear, left, and right ends with sliding grooves, and the limiting posts are all vertically fixed in the sliding grooves. The cross-sectional area of ​​the sliding grooves is the same as the cross-sectional area of ​​the inner slider.

[0010] Preferably, the inner slider moves vertically up and down along the limiting post in the slide groove, and the ends of the two return springs away from the middle of the limiting post are respectively connected to the upper and lower ends of the slide groove.

[0011] 1. When the main frame is installed in the vibrating screen to screen materials, the main frame vibrates along with the screen. At this time, the bars in the middle of the main frame are simultaneously acted upon by the vibration forces at the upper and lower ends. Since the bars are fixed between the support plate and the limiting plate, the bars drive the inner slider to move up and down along the limiting column. During the up and down movement of the inner slider, the return springs at the upper and lower ends are compressed and deformed. The subsequent deformation of the return springs pushes the bars back to their original positions, so that while the main frame vibrates, the bars also sway up and down inside the main frame. The vibration amplitude of the bar screen is larger, which allows the materials to gain greater kinetic energy on the bar screen composed of bars, making them move and roll faster on the surface of the bar screen, accelerating the speed of passing through the screen holes, and thus improving the screening efficiency of materials.

[0012] 2. When the rod column needs to be replaced, unlock the fixing plate by turning the limit bolt, remove the limit plate below the fixing plate from the top of the support plate, and then take out the rod column. Place the new rod column on the support plate, and then nest the limit plate below the fixing plate on top of the support plate and the rod column. Turn the limit bolt to quickly connect the fixing plate and the support plate, which allows for quick replacement of the rod column above the support plate, making rod maintenance much simpler. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an exploded view of a portion of the main frame structure in this utility model;

[0015] Figure 3 This is a schematic diagram of a partial front cross-section of the main frame structure in this utility model;

[0016] Figure 4 This is a schematic diagram of a partial structure of the inner slider in this utility model.

[0017] Legend:

[0018] Main frame 1, mounting plate 101, limiting post 2, inner slider 201, return spring 202, support plate 203, bar post 204, fixing plate 205, limiting plate 206, limiting bolt 207. Detailed Implementation

[0019] Example 1, referring to Figure 1-4 A bar screen for a vibrating screen includes a main frame 1. Mounting plates 101 are fixed to the left and right ends of the outer wall of the main frame 1. Limiting posts 2 are vertically embedded in the front, back, left and right ends of the main frame 1. An inner slider 201 is nested in the middle of each limiting post 2. A return spring 202 is nested in the upper and lower ends of the outer side of each limiting post 2. A support plate 203 is fixed to the end of each limiting post 2 near the middle of the main frame 1. Bar posts 204 are embedded inside the main frame 1. Fixing plates 205 are embedded in the front, back, left and right ends of the upper inner wall of the main frame 1. Limiting plates 206 are fixed to the bottom of each fixing plate 205. Limiting bolts 207 are vertically embedded in the middle of each fixing plate 205.

[0020] The upper interior of the support plate 203 and the lower interior of the limiting plate 206 are both provided with limiting grooves, and the outer side of the bar column 204 is precisely embedded in the limiting grooves of the front, rear, left and right end support plates 203.

[0021] The limiting groove at the bottom of the limiting plate 206 is nested on the outer side of the bar column 204, and the middle part of the limiting plate 206 and the middle part of the support plate 203 are on the same vertical horizontal plane.

[0022] After the bar 204 is embedded in the limiting groove in the support plate 203 and the fixing plate 205, the fixing plate 205 will simultaneously adhere to the upper and lower ends of the bar 204 to limit the bar 204 and prevent the bar 204 from jumping up and down between the support plate 203 and the fixing plate 205.

[0023] The bottom end of the limiting plate 206 is closely attached to the top of the support plate 203, and the fixing plate 205 is fixedly connected to the support plate 203 through the limiting bolt 207.

[0024] When the bar column 204 needs to be replaced, the fixing plate 205 can be unlocked by turning the limit bolt 207. After the limit plate 206 below the fixing plate 205 is removed from the top of the support plate 203, the bar column 204 can be inspected and replaced.

[0025] The new rod post 204 can be placed on the support plate 203. Then, the limiting plate 206 below the fixing plate 205 is nested above the support plate 203 and the rod post 204. Tightening the limiting bolt 207 allows the fixing plate 205 and the support plate 203 to be quickly connected, which allows the rod post 204 above the support plate 203 to be quickly replaced, making the maintenance of the rod post 204 much simpler.

[0026] Example 2 differs from Example 1 in that, in this example, the front, back, left and right ends of the main frame 1 are all vertically opened with sliding grooves, and the limiting posts 2 are all vertically fixed in the sliding grooves. The cross-sectional area of ​​the sliding grooves is the same as the cross-sectional area of ​​the inner slider 201.

[0027] The limiting post 2 is embedded in the inner slider 201 to limit the inner slider 201 and prevent the inner slider 201 from being misaligned or offset during the up and down movement.

[0028] The inner slider 201 moves up and down vertically in the slide groove along the limiting post 2, and the ends of the two return springs 202 away from the middle of the limiting post 2 are respectively connected to the upper and lower ends of the slide groove.

[0029] When the main frame 1 is installed in the vibrating screen to screen materials, the main frame 1 vibrates along with the vibrating screen. At this time, the bar column 204 in the middle of the main frame 1 is simultaneously acted upon by the vibration force at the upper and lower ends. Since the bar column 204 is fixed between the support plate 203 and the limiting plate 206, the bar column 204 drives the inner slider 201 to move up and down along the limiting column 2. During the up and down movement of the inner slider 201, it will compress the return spring 202 at its upper and lower ends to deform. Subsequently, the deformation of the return spring 202 pushes the bar column 204 to return to its original position, so that while the main frame 1 vibrates, the bar column 204 will also sway up and down inside the main frame 1. The vibration amplitude of the bar screen is larger, which allows the material to obtain greater kinetic energy on the bar screen composed of the bar columns 204, making it move and roll faster on the surface of the bar screen, speeding up the speed of passing through the screen holes, and thus improving the screening efficiency of the material.

[0030] 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 bar screen for a vibrating screen, comprising a main frame (1), characterized in that, Mounting plates (101) are fixed to the left and right ends of the outer wall of the main frame (1). Limiting posts (2) are vertically embedded in the front, back, left and right ends of the main frame (1). An inner slider (201) is nested in the middle of the limiting post (2). A return spring (202) is nested in the upper and lower ends of the outer side of the limiting post (2). A support plate (203) is fixed to the end of the limiting post (2) near the middle of the main frame (1). A bar post (204) is embedded in the inside of the main frame (1). A fixing plate (205) is embedded in the front, back, left and right ends of the upper part of the inner wall of the main frame (1). A limiting plate (206) is fixed to the bottom of the fixing plate (205). A limiting bolt (207) is vertically embedded in the middle of the fixing plate (205).

2. The bar screen for a vibrating screen according to claim 1, characterized in that, The upper interior of the support plate (203) and the lower interior of the limiting plate (206) are both provided with limiting grooves, and the outer side of the bar column (204) is precisely embedded in the limiting grooves of the front, rear, left and right end support plates (203).

3. The bar screen for a vibrating screen according to claim 2, characterized in that, The limiting groove at the bottom of the limiting plate (206) is nested on the outer side of the bar column (204), and the middle part of the limiting plate (206) and the middle part of the support plate (203) are both on the same vertical horizontal plane.

4. The bar screen for a vibrating screen according to claim 1, characterized in that, The bottom end of the limiting plate (206) is close to the top of the support plate (203), and the fixing plate (205) is fixedly connected to the support plate (203) by the limiting bolt (207).

5. The bar screen for a vibrating screen according to claim 1, characterized in that, The main frame (1) has vertical openings at the front, back, left and right ends with sliding grooves. The limiting posts (2) are all vertically fixed in the sliding grooves. The cross-sectional area of ​​the sliding grooves is the same as the cross-sectional area of ​​the inner slider (201).

6. The bar screen for a vibrating screen according to claim 5, characterized in that, The inner slider (201) moves vertically up and down in the groove along the limiting post (2), and the two return springs (202) are connected to the upper and lower ends of the groove respectively at the ends away from the middle of the limiting post (2).

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