Screening equipment capable of optimizing service life of screen

Abstract

The utility model discloses screening equipment for optimizing the service life of a screen. The screening equipment comprises a screen bracket, the screen and a lining net, the screen and the lining net are arranged in parallel at intervals, and the mesh size of the screen is smaller than that of the lining net; the peripheral edge of the lining net is connected with the screen bracket through a first tensioning assembly; the peripheral edge of the screen is connected with the screen bracket through a second tensioning assembly; anti-loosening pressing pieces are arranged on the screen bracket at intervals; the anti-loosening pressing piece comprises a screen fixing hook and a fixing nut. The screen fixing hook is arranged in the screen bracket in a penetrating mode, the hook end of the screen fixing hook is connected to the bottom of the screen bracket in a pressed mode, and the upper end of the screen fixing hook exceeds the top face of the screen. A base plate is pressed on the top surface of the screen at the upper part of the screen fixing hook; the fixing nut is in threaded connection with the screen fixing hook, and the screen and the lining net are arranged on the screen bracket in a pressing mode. The utility model solves the technical problems that the screen mesh of the traditional screening equipment is easy to break wires and damage during high-frequency friction, the labor intensity is high when the screen mesh is frequently replaced, and the maintenance cost is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building materials, especially a screening equipment for optimizing screen life. BACKGROUND

[0002] As a key link of production preparation, the sand and gravel aggregate production line must analyze the problems existing in the sand and gravel aggregate production line in order to better solve the actual problems in the industrial production of sand and gravel aggregate.

[0003] Generally, the main factor that can directly affect the quality and specific capacity of the sand and gravel aggregate production line is the equipment selection. In order to achieve the sand and gravel aggregate of different particle sizes required by the standard of building sand and gravel aggregate, screening equipment is needed for screening. Common screening equipment includes vibrating screen, linear screen, drum screen, circular vibrating screen, etc. Regardless of which kind of screening equipment, different specifications of screen mesh are needed to separate products, therefore, the screen mesh of the screening equipment becomes the key to control the quality of sand and gravel aggregate products. However, through tracking investigation, it is found that the service life of the 5mm*5mm vibrating screen mesh in more than 95% of the production lines in the sand and gravel aggregate industry is less than 200 hours, and even in some production lines with pebbles as the main raw material, the screen mesh is replaced after only 40 hours of use. Frequent replacement of screen mesh brings great trouble to industrial production, reduces production efficiency, and increases labor intensity. Research on how to solve the problem of easy damage of screen mesh has become a technical difficulty and a practical need that needs to be solved urgently in the sand and gravel aggregate industry. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a screening equipment for optimizing screen life, and solves the technical problems of the screen mesh of the traditional screening equipment being easy to cause screen mesh breakage, screen mesh damage, frequent replacement of screen mesh, high labor intensity, and high maintenance cost when high-frequency friction occurs.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions.

[0006] A screening equipment for optimizing screen life, comprising a screen mesh carrier and a screen mesh, further comprising a lining mesh, the screen mesh and the lining mesh are arranged in parallel and at intervals, and the mesh size of the screen mesh is smaller than that of the lining mesh, the four peripheral edges of the lining mesh are connected with the screen mesh carrier through a first tensioning assembly, the four peripheral edges of the screen mesh are connected with the screen mesh carrier through a second tensioning assembly, anti-loosening compression pieces are arranged at intervals on the screen mesh carrier, the anti-loosening compression pieces comprise screen mesh fixing hooks and fixing nuts, the screen mesh fixing hooks are arranged in the screen mesh carrier, the hook ends of the screen mesh fixing hooks are pressed against the bottom of the screen mesh carrier, and the upper ends of the screen mesh fixing hooks are above the top surface of the screen mesh, a pad is arranged on the upper part of the screen mesh fixing hooks and located on the top surface of the screen mesh, and the fixing nuts are threadedly connected on the screen mesh fixing hooks and press the screen mesh and the lining mesh on the screen mesh carrier.

[0007] Preferably, the screen carrier comprises a screen plate carrier and a frame edge; the screen plate carrier is in a rectangular grid structure; and the frame edge is arranged on the top of the screen plate carrier along the four peripheral edges of the screen plate carrier.

[0008] Preferably, the peripheral edges of the lining net are respectively bent upward to form upper turning edges; the upper turning edges are attached to the inner side of the frame edge; the first tensioning assembly comprises a first tensioning pressing plate and a first tensioning bolt; the vertical section of the first tensioning pressing plate is in L shape, and the first tensioning pressing plate is pressed at the corner of the lining net and the upper turning edge; and the first tensioning bolt fixedly connects the vertical edge of the first tensioning pressing plate, the upper turning edge and the frame edge.

[0009] Preferably, the peripheral edges of the screen are respectively bent upward to form hook edges; the hook edges are located close to the frame edge; the second tensioning assembly comprises a second tensioning pressing plate and a second tensioning bolt; the second tensioning pressing plate is a folded plate, and the lower part of the second tensioning pressing plate is hung on the hook edge of the screen, and the upper part of the second tensioning pressing plate is pressed on the frame edge; and the second tensioning bolt fixedly connects the second tensioning pressing plate and the frame edge.

[0010] Preferably, the grid size of the screen is 5mm*5mm; and the grid size of the lining net is 35mm*35mm.

[0011] Preferably, the cushion plate is provided with a protective stopper; and the protective stopper is located on the side of the fixing nut close to the discharge port.

[0012] Compared with the prior art, the utility model has the following characteristics and beneficial effects.

[0013] 1. A uniform installation of the screen anti-loosening pressing device is designed between the screen surface and the screen frame carrier, so that the screen and the screen frame are closely attached, to prevent the mutual friction of the screen in the running process due to loosening, reduce the service life, and the transformation cost is low and the construction is simple.

[0014] 2. By improving the 5mm*5mm screen, the service life is prolonged from less than 200 hours to more than 1500 hours; the service life of the 40mm*40mm polyurethane screen is prolonged from 240 hours to 1800 hours; the prolongation of the service life of the screen ensures the safe, economic, stable and efficient operation of the aggregate production line, eliminates the mixing problem caused by the damage of the screen in the production process, and guarantees the product quality; and the problem of high labor intensity and high maintenance cost caused by frequent replacement of the screen is solved.

[0015] 3. During screen installation or production operation, if the screen tension is insufficient, it will resonate at the same frequency as the vibrating screen body during operation. This will generate secondary vibration relative to the screen body, causing brittle fracture or abnormal wear of the steel wires inside the screen, greatly shortening its service life. This utility model designs a uniformly installed screen anti-loosening clamping device between the screen surface and the screen frame bracket, ensuring a tight fit between the screen and the screen frame to prevent the screen from loosening and rubbing against each other during operation, thus reducing its service life. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the lining mesh in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the screen in this utility model.

[0019] Figure 3 This is a schematic plan view of the connection structure between the screen and the liner in this utility model.

[0020] Figure 4 This is a cross-sectional schematic diagram of the connection structure between the screen and the liner in this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the screen fixing hook in this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the fixing nut in this utility model.

[0023] Figure 7 This is a schematic diagram of the connection structure between the screen, the liner, and the frame in this utility model.

[0024] Reference numerals in the attached drawings: 1 - Screen support bracket, 1.1 - Screen plate frame, 1.2 - Frame edge, 2 - Screen, 2.1 - Hook edge, 3 - Liner, 3.1 - Upward flange, 4 - First tensioning assembly, 4.1 - First tensioning plate, 4.2 - First tensioning bolt, 5 - Second tensioning assembly, 5.1 - Second tensioning plate, 5.2 - Second tensioning bolt, 6 - Anti-loosening clamping component, 6.1 - Screen fixing hook, 6.2 - Fixing nut, 6.3 - Pad, 7 - Protective stop block. Detailed Implementation

[0025] like Figures 1-7As shown, this screening equipment for optimizing screen life includes a screen support 1 and a screen 2; it also includes a liner 3; the screen 2 and the liner 3 are arranged parallel and spaced apart, and the mesh size of the screen 2 is smaller than the mesh size of the liner 3; the four edges of the liner 3 are connected to the screen support 1 through a first tensioning component 4 to improve the strength of the screen structure; the four edges of the screen 2 are connected to the screen support 1 through a second tensioning component 5; anti-loosening clamping components 6 are spaced apart on the screen support 1; the anti-loosening clamping components 6 are spaced apart. The fastener 6 includes a screen fixing hook 6.1 and a fixing nut 6.2; the screen fixing hook 6.1 is inserted into the screen bracket 1, and the hook end of the screen fixing hook 6.1 is pressed against the bottom of the screen bracket 1, and the upper end of the screen fixing hook 6.1 extends beyond the top surface of the screen 2; a pad 6.3 is pressed on the upper part of the screen fixing hook 6.1, located on the top surface of the screen 2; the fixing nut 6.2 is threaded onto the screen fixing hook 6.1, and presses the screen 2 and the liner 3 onto the screen bracket 1.

[0026] In this embodiment, the pads 6.3 located on both sides of the top surface of the screen 2 are block-shaped and are arranged longitudinally at intervals on the top surface of the screen 2; the pads 6.3 located at the longitudinal axis of the screen 2 are strip-shaped and are arranged longitudinally along the top surface of the screen 2.

[0027] In this embodiment, the screen support 1 includes a screen plate frame 1.1 and a frame edge 1.2; the screen plate frame 1.1 has a rectangular grid structure; the frame edge 1.2 is arranged on the top of the screen plate frame 1.1 along the four edges of the screen plate frame 1.1.

[0028] In this embodiment, the four edges of the lining mesh 3 are bent upwards to form an upturned edge 3.1; the upturned edge 3.1 is attached to the inner side of the frame edge 1.2; the first tensioning assembly 4 includes a first tensioning plate 4.1 and a first tensioning bolt 5.1; the vertical cross-section of the first tensioning plate 4.1 is L-shaped, and the first tensioning plate 4.1 is pressed at the corner of the lining mesh 3 and the upturned edge 3.1; the first tensioning bolt 5.1 fixes the vertical edge of the first tensioning plate 4.1, the upturned edge 3.1 and the frame edge 1.2. The first tensioning plate 4.1 is made of angle steel or steel plate bent at 90 degrees.

[0029] In this embodiment, the four edges of the screen 2 are bent upwards to form hook edges 2.1; the hook edges 2.1 are located near the frame edge 1.2; the second tensioning assembly 5 includes a second tensioning plate 5.1 and a second tensioning bolt 5.2; the second tensioning plate 5.1 is a folded plate, and the lower part of the second tensioning plate 5.1 is hooked on the hook edge 2.1 of the screen 2, and the upper part of the second tensioning plate 5.1 is pressed on the frame edge 1.2; the second tensioning bolt 5.2 fixes the second tensioning plate 5.1 to the frame edge 1.2, and the second tensioning plate 5.1 is formed by bending a steel plate twice in a clockwise or counterclockwise direction.

[0030] In this embodiment, the mesh size of the screen 2 is 5mm × 5mm; the mesh size of the lining mesh 3 is 35mm × 35mm, and the wire diameter of the lining mesh 3 is selected to be 7mm. The purpose is to enhance the impact resistance of the screen 2 by increasing the size of the lining mesh 3. At the same time, the shearing force between the screen support 1 and the screen 2 is transferred to the lining mesh 3. Due to the larger wire diameter of the lining mesh 3, the impact resistance, corrosion resistance, and wear resistance are greatly improved.

[0031] In this embodiment, the pad 6.3 is provided with a protective block 7; the protective block 7 is located on the side of the fixing nut 6.2 near the discharge port; the horizontal cross-section of the protective block 7 is L-shaped and is made of angle steel or welded from two steel plates at right angles.

[0032] Reference numerals in the attached drawings: 1 - Screen support bracket, 1.1 - Screen plate frame, 1.2 - Frame edge, 2 - Screen, 2.1 - Hook edge, 3 - Liner, 3.1 - Upward flange, 4 - First tensioning assembly, 4.1 - First tensioning plate, 4.2 - First tensioning bolt, 5 - Second tensioning assembly, 5.1 - Second tensioning plate, 5.2 - Second tensioning bolt, 6 - Anti-loosening clamping component, 6.1 - Screen fixing hook, 6.2 - Fixing nut, 6.3 - Pad, 7 - Protective stop block.

[0033] In this embodiment, the construction method for optimizing the screen life of the screening equipment is as follows: First, lay the 35mm×35mm liner 3 flat on the screen frame bracket 1. Then, lay the 5mm×5mm finished screen 2 on top of the liner 3. Use the tensioning devices at both ends to tension the screen 2 first. Then, use the screen fixing hooks 6.1, fixing nuts 6.2, pads 6.3, and protective blocks 7 to ensure that the screen 2, liner 3, and screen frame 1.1 are tightly fitted together, preventing the screens from loosening and rubbing against each other during operation. See details. Figure 6 Installation diagram of screen and liner.

[0034] The above embodiments are not exhaustive examples of specific implementation methods, and other embodiments may also exist. The purpose of the above embodiments is to illustrate the present utility model, rather than to limit the protection scope of the present utility model. All applications derived from simple variations of the present utility model fall within the protection scope of the present utility model.

Claims

1. A screening device for optimizing the life of the screen, comprising a screen carrier (1) and a screen (2); characterized in that: It further comprises a backing net (3); the screen (2) and the backing net (3) are arranged in parallel and spaced apart, and the mesh size of the screen (2) is smaller than that of the backing net (3); the four peripheral edges of the backing net (3) are connected with the screen carrier (1) through the first tensioning assembly (4); the four peripheral edges of the screen (2) are connected with the screen carrier (1) through the second tensioning assembly (5); the anti-loosening compression pieces (6) are arranged on the screen carrier (1) in a spaced manner; the anti-loosening compression pieces (6) comprise screen fixing hooks (6.1) and fixing nuts (6.2); the screen fixing hooks (6.1) are arranged in the screen carrier (1), and the hook ends of the screen fixing hooks (6.1) are pressed against the bottom of the screen carrier (1), and the upper ends of the screen fixing hooks (6.1) are beyond the top surface of the screen (2); the backing plate (6.3) is arranged on the upper part of the screen fixing hook (6.1) and presses against the top surface of the screen (2); the fixing nuts (6.2) are threadedly connected on the screen fixing hooks (6.1), and the screen (2) and the backing net (3) are pressed on the screen carrier (1).

2. The screening apparatus to optimize screen life of claim 1, wherein: The screen carrier (1) comprises a screen plate frame (1.1) and a frame edge (1.2); the screen plate frame (1.1) is in a rectangular grid structure; the frame edge (1.2) is arranged on the top of the screen plate frame (1.1) along the four peripheral edges of the screen plate frame (1.1).

3. The screening apparatus to optimize screen life of claim 2, wherein: The four peripheral edges of the backing net (3) are respectively bent upwards to form upper flanges (3.1); the upper flanges (3.1) are arranged on the inner side of the frame edge (1.2); the first tensioning assembly (4) comprises a first tensioning pressing plate (4.1) and a first tensioning bolt (4.2); the vertical section of the first tensioning pressing plate (4.1) is in L shape, and the first tensioning pressing plate (4.1) is arranged at the corner of the backing net (3) and the upper flange (3.1); the first tensioning bolt (4.2) fixedly connects the vertical edge of the first tensioning pressing plate (4.1), the upper flange (3.1) and the frame edge (1.2).

4. The screening apparatus of claim 2, wherein: The four peripheral edges of the screen (2) are respectively bent upwards to form hook edges (2.1); the hook edges (2.1) are located close to the frame edge (1.2); the second tensioning assembly (5) comprises a second tensioning pressing plate (5.1) and a second tensioning bolt (5.2); the second tensioning pressing plate (5.1) is a folded plate, and the lower part of the second tensioning pressing plate (5.1) is hooked on the hook edge (2.1) of the screen (2), and the upper part of the second tensioning pressing plate (5.1) is arranged on the frame edge (1.2); the second tensioning bolt (5.2) fixedly connects the second tensioning pressing plate (5.1) and the frame edge (1.2).

5. The screening apparatus of claim 1, wherein: The mesh size of the screen (2) is 5mm×5mm; the mesh size of the backing net (3) is 35mm×35mm.

6. The screening apparatus of claim 1, wherein: The backing plate (6.3) is provided with a protection block (7); the protection block (7) is located on the side of the fixing nut (6.2) close to the discharge port.

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