A device for replacing the screen mesh of a vibrating screen.

Abstract

This utility model provides a device for replacing the screen mesh of a vibrating screen, including a base frame, a pressure frame, a screen mesh winding assembly, a power assembly, and a locking assembly. The base frame and the pressure frame are pressed together, and the contact surfaces of the base frame and the pressure frame are both flat. The screen mesh is pressed between the base frame and the pressure frame. The locking assembly is used to lock and unlock the base frame and the pressure frame. The screen mesh winding assembly includes an unwinding roller shaft disposed on one side of the base frame and the pressure frame, and a winding roller shaft disposed on the other side of the base frame and the pressure frame. At least the winding roller shaft is equipped with a power assembly for driving the winding roller shaft to perform a winding action. A roll of screen mesh is wound on the unwinding roller shaft, the free end of the screen mesh is wound on the winding roller shaft, and the middle part of the screen mesh passes between the base frame and the pressure frame and is pressed and fixed. The area inside the base frame and the pressure frame constitutes the effective screening area of ​​the screen mesh. This device has the advantages of being more economical and easier to replace the screen mesh.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to a device for replacing the screen mesh of a vibrating screen. Background Technology

[0002] Vibrating screens are a type of high-efficiency screening equipment widely used in mining, coal, metallurgy, construction, light industry, chemical and other industries. Vibrating screens use inertial exciters to generate vibration, with a vibrating motor as the vibration source, driving the exciter to generate excitation force. Under the combined action of the excitation force and the material's own weight, the material is thrown up and then falls on the screen. Small materials pass through the screen holes, while large materials are blocked by the screen, thereby achieving the purpose of screening and grading materials.

[0003] The core component of a vibrating screen is the screen mesh. Due to the high-frequency vibration environment and continuous wear, the screen mesh needs to be replaced after a short period of use.

[0004] Currently, the general structure of a vibrating screen mainly includes an upper pressure plate, a bottom support plate, and a middle screen assembly. During use, the upper pressure plate and the bottom support plate press and fix the middle screen assembly. When replacement is needed, the upper pressure plate is removed, the middle screen assembly is completely disassembled, and a new screen is replaced.

[0005] Because of this design structure, the intermediate screen assembly requires more external structural components to reinforce and shape the screen, which increases the cost of the screen. The screen also needs to be replaced frequently, making this design uneconomical.

[0006] In addition, replacing the intermediate screen assembly requires completely removing the upper pressure plate, which is relatively complicated.

[0007] To address these issues, a more economical alternative that also reduces the ease of replacement is needed. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a more economical device for replacing the screen of a vibrating screen that is easier to replace.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a device for replacing the screen mesh of a vibrating screen, comprising a bottom frame, a pressure frame, a screen mesh winding assembly, a power assembly, and a locking assembly;

[0010] The bottom frame and the pressure frame are pressed together, and the screen is pressed between the bottom frame and the pressure frame. The locking component is used to press and lock the bottom frame and the pressure frame and unlock them.

[0011] The screen winding assembly includes an unwinding roller shaft disposed on one side of the bottom frame and the pressure frame, and a winding roller shaft disposed on the other side of the bottom frame and the pressure frame. At least the winding roller shaft is equipped with a power component for driving the winding roller shaft to perform a winding action.

[0012] A rolled-up screen is wound on the unwinding roller, the free end of the screen is wound on the take-up roller, and the middle part of the screen passes between the bottom frame and the pressure frame and is pressed and fixed. The area inside the bottom frame and the pressure frame constitutes the effective screening area of ​​the screen.

[0013] Preferably, an S-shaped spring sheet is installed between the bottom frame and the pressure frame. The S-shaped spring sheet is fixed to the bottom frame or the pressure frame and is used to provide elastic force for the separation of the bottom frame and the pressure frame.

[0014] Preferably, it also includes a support frame base, wherein the support frame base is provided with a screen corresponding to the effective screening area of ​​the screen, and the aperture of the screen is larger than that of the screen.

[0015] Preferably, the bottom frame is mounted on a support frame base, and the pressure frame is mounted on the bottom frame.

[0016] Preferably, the locking assembly includes a screw with threaded sections at both ends, which passes through the pressure frame, the bottom frame, and the support frame base from top to bottom, and locking bolts are respectively installed on the threaded sections at both ends of the screw.

[0017] Preferably, a top compression spring is fitted in the middle of the screw, and two baffles are connected to both ends of the top compression spring. The two baffles at both ends abut against the lower end face of the bottom frame and the upper end face of the support plate base, respectively.

[0018] Preferably, the locking components are arranged in two rows on both sides of the screen traveling direction.

[0019] Preferably, bearings and bearing frames are respectively installed at both ends of the unwinding roller shaft and at both ends of the winding roller shaft. The bearing frames have mounting holes, and the support base or bottom frame is provided with matching mounting holes. The bearing frames are fixed to the support base or bottom frame by mounting bolts and mounting holes.

[0020] Preferably, the power assembly is mounted on the bearing frame, the support base, or the bottom frame. The power assembly is a drive motor, which is connected to the take-up roller shaft via a main synchronous pulley, a synchronous belt, and a secondary synchronous pulley.

[0021] Preferably, the unwinding roller is also equipped with a power assembly, and the power assemblies of the winding roller and the unwinding roller move synchronously.

[0022] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model eliminates the original screen assembly and replaces it with a screen winding assembly with unwinding and winding rollers that are matched. When the screen needs to be replaced, the pressure frame is raised to a certain height without being completely removed. Then, the screen winding assembly is controlled to perform a winding action, updating the screen in the central area. The used screen portion is wound onto the winding roller, and the screen between the pressure frame and the bottom frame is replaced with a new screen. Finally, the screen is pressed and locked in place by the pressure frame and the bottom frame, thus completing the screen replacement.

[0023] Because this structure eliminates the need for the original screen assembly's outer frame and other supporting structures, and the newly added take-up and untake-up rollers can be reused, in the long run, the screen replacement cost only includes the screen itself, and it has a greater cost advantage due to the elimination of cutting costs.

[0024] At the same time, since the replacement action only requires lifting the pressure frame and loosening the locking component, without having to completely remove the pressure frame, the labor intensity is reduced and the replacement difficulty is also reduced. Attached Figure Description

[0025] Figure 1 This is an overall schematic diagram of a device for replacing the screen mesh of a vibrating screen according to the present invention.

[0026] Figure 2 This is a diagram showing the fit between the pressure frame and the bottom frame in a device for replacing the screen of a vibrating screen according to this utility model.

[0027] Figure 3 This is a schematic diagram of the locking component in this utility model.

[0028] In the diagram: 1. Screen support base; 2. Screen winding assembly; 3. Power assembly; 4. Locking assembly; 5. Pressure frame; 6. Bottom frame; 7. S-shaped spring sheet; 8. Screen support;

[0029] 201. Bearing bracket; 202. Bearing; 203. Take-up roller shaft; 204. Mounting hole; 205. Mounting bolt; 301. Drive motor; 302. Main synchronous pulley; 303. Synchronous belt; 304. Secondary synchronous pulley; 401. Screw; 402. Top pressure spring; 403. Baffle plate; 404. Locking nut. Detailed Implementation

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0031] like Figures 1-3 As shown, a device for replacing the screen of a vibrating screen includes a base frame 6, a pressure frame 5, a screen winding assembly 2, a power assembly 3, and a locking assembly 4.

[0032] The bottom frame 6 and the pressure frame 5 are pressed together, and the bottom frame 6 and the pressure frame 5 are used to press the screen. The locking component 4 is used to press and lock the bottom frame 6 and the pressure frame 5 and unlock them.

[0033] Specifically, in this embodiment, in order to press the screen tightly, the contact surface or pressing surface of the bottom frame 6 and the pressing frame 5 can be designed as a structure with grooves and protrusions that interlock with each other, or it can be a plane that connects with each other. Its size or shape design needs to ensure that the screen can pass freely after the pressing frame 5 is raised to a certain height.

[0034] Accordingly, in this embodiment, both the pressure frame 5 and the bottom frame 6 are rectangular, with the long side used for the screen to pass through and the short side used for installing the locking component 4.

[0035] The screen winding assembly 2 includes an unwinding roller shaft disposed on one side of the bottom frame 6 and the pressure frame 5, and a winding roller shaft 203 disposed on the other side of the bottom frame 6 and the pressure frame 5. At least the winding roller shaft 203 is equipped with a power assembly 3 for driving the winding roller shaft 203 to perform winding action.

[0036] like Figure 1 As shown, in order to illustrate the structural features, only the specific connection structure on one side of the take-up roller shaft 203 is described in detail and illustrated. Specifically, bearings 202 and bearing brackets 201 are respectively installed at both ends of the take-up roller shaft 203. The bearing bracket 201 has mounting holes 204. The support base 1 or the bottom frame 6 is provided with matching mounting holes. The bearing bracket 201 is fixed to the support base 6 or the bottom frame by mounting bolts 205 and mounting holes 204.

[0037] To illustrate its structural features, the connecting structure is shown at the bottom but not actually connected, and is presented in an exploded view. At the top, the bearing bracket 201, mounting bolt 205, and mounting hole 204 are omitted from the diagram and are only shown as an indication of the installation position.

[0038] Similarly, the installation method on one side of the unwinding roller shaft is the same as and symmetrical to the installation method of the take-up roller shaft 203, so it is not shown in detail in the figure.

[0039] A rolled-up screen (screen not shown) is wound on the unwinding roller shaft. The free end of the screen is wound on the take-up roller shaft 203. The middle part of the screen passes between the bottom frame 6 and the pressure frame 5 and is pressed and fixed. The area inside the bottom frame 6 and the pressure frame 5 constitutes the effective screening area of ​​the screen.

[0040] The power assembly 3 is mounted on the bearing frame, the support base, or the bottom frame. The power assembly 3 is a drive motor 301. The drive motor 301 is connected to the take-up roller shaft 203 through the main synchronous pulley 302, the synchronous belt 303, and the auxiliary synchronous pulley 304.

[0041] In a preferred embodiment, the unwinding roller is also equipped with a power assembly, and the power assemblies of the winding roller and the unwinding roller move synchronously to achieve uniform unwinding of the screen.

[0042] In order to save effort when lifting the pressure frame 5, in this embodiment, an S-shaped spring plate 7 is installed between the bottom frame 6 and the pressure frame 5. The S-shaped spring plate 7 is fixed on the bottom frame 6 or the pressure frame 5. The S-shaped spring plate 7 is used to provide elastic force for the separation of the bottom frame 6 and the pressure frame 5. Under the direct elastic force of the S-shaped spring plate 7, the pressure frame 5 can be completely lifted.

[0043] Since the screen is relatively fragile, it also includes a support frame base 1. The support frame base 1 is provided with a support mesh 8 corresponding to the effective screening area of ​​the screen. The aperture of the support mesh 8 is larger than that of the screen and is used to support the screen from the bottom and protect the screen.

[0044] Therefore, in terms of specific structural relationships, the support base 1 serves as the base of the entire screen device, the bottom frame 6 is installed based on the support base 1, the pressure frame 5 is installed based on the bottom frame 6, and the screw 401 passes through the pressure frame 5, the bottom frame 6 and the support base 1 from top to bottom. The threaded sections at both ends of the screw 401 are respectively equipped with locking bolts 404.

[0045] Since the bottom frame 6 has certain requirements for installation height, but the vibrating screen is subject to vibration, and the tight connection is not easy to ensure safety, a top pressure spring 402 is installed in the middle of the screw 401. The two ends of the top pressure spring 402 are connected to baffles 403. The two baffles 403 at both ends abut against the lower end face of the bottom frame 6 and the upper end face of the support plate base, respectively, to provide support for the bottom frame 6.

[0046] Work process description:

[0047] This device can be modified based on a traditional screen device. First, retain the original bottom frame and pressure frame structure, and observe whether the pressing area between the bottom frame and the pressure frame meets the requirements. If it does not meet the requirements, the bottom surface of the pressure frame and the top surface of the bottom frame can be processed so that the mating surfaces of the two have a mating basis. At the same time, the mounting holes for installing the locking component 4 are processed, and the S-shaped spring sheet 7 is installed.

[0048] Then, based on the width-to-height ratio of the original bottom frame and pressure frame, the specific dimensions of the screen winding device are designed. The winding roller shaft and unwinding roller shaft are installed on the original screen support base or bottom frame through bearing brackets, and the power assembly is configured, thus completing the transformation process.

[0049] When in use, the screen roll is placed on the unwinding roller. After the unfolded end of the screen passes through the area between the bottom frame and the pressure frame, it is wound onto the take-up roller. After appropriate adjustment, the pressure frame 5 and the bottom frame 6 are engaged and locked by the locking assembly 4 to lock the screen in place and begin use.

[0050] When the screen needs to be replaced after a period of use, loosen the locking component 4. The pressure frame 5 moves up a certain distance under the elastic force of the S-shaped spring plate 7, and the screen is released. Then, start the power component to wind the used screen onto the take-up roller shaft, release the new screen between the pressure frame 5 and the bottom frame 6, and lock it again to complete the screen replacement.

[0051] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An apparatus for vibration screen screen exchange, characterized by: Includes a base frame, pressure frame, screen winding assembly, power assembly, and locking assembly; The bottom frame and the pressure frame are pressed together, and the screen is pressed between the bottom frame and the pressure frame. The locking component is used to press and lock the bottom frame and the pressure frame and unlock them. The screen winding assembly includes an unwinding roller shaft disposed on one side of the bottom frame and the pressure frame, and a winding roller shaft disposed on the other side of the bottom frame and the pressure frame. At least the winding roller shaft is equipped with a power component for driving the winding roller shaft to perform a winding action. A rolled-up screen is wound on the unwinding roller, the free end of the screen is wound on the take-up roller, and the middle part of the screen passes between the bottom frame and the pressure frame and is pressed and fixed. The area inside the bottom frame and the pressure frame constitutes the effective screening area of ​​the screen.

2. The apparatus for vibratory screen mesh replacement of claim 1, wherein: An S-shaped spring sheet is installed between the bottom frame and the pressure frame. The S-shaped spring sheet is fixed to the bottom frame or the pressure frame and is used to provide elastic force for the separation of the bottom frame and the pressure frame.

3. The apparatus for vibratory screen mesh replacement of claim 1, wherein: It also includes a support frame base, which supports the screen in accordance with the effective screening area of ​​the screen, and the aperture of the support screen is larger than that of the screen.

4. The apparatus for vibratory screen mesh replacement of claim 3, wherein: The bottom frame is mounted on the support frame base, and the pressure frame is mounted on the bottom frame.

5. The apparatus for vibratory screen mesh replacement of claim 4, wherein: The locking assembly includes a screw with threaded sections at both ends. The screw passes through the pressure frame, the bottom frame, and the support frame base from top to bottom. Locking bolts are installed on the threaded sections at both ends of the screw.

6. The apparatus for vibratory screen mesh replacement of claim 5, wherein: A top-compression spring is fitted in the middle of the screw, and two baffles are connected to both ends of the top-compression spring. The two baffles at both ends abut against the lower end face of the bottom frame and the upper end face of the support plate base, respectively.

7. The apparatus for vibratory screen mesh replacement of claim 6, wherein: The locking components are arranged in two rows on both sides of the screen's travel direction.

8. The device for replacing the screen mesh of a vibrating screen according to claim 3, characterized in that: Bearings and bearing frames are respectively installed at both ends of the unwinding roller shaft and the two ends of the winding roller shaft. The bearing frames have mounting holes, and the support base or bottom frame is provided with matching mounting holes. The bearing frames are fixed to the support base or bottom frame by mounting bolts and mounting holes.

9. The device for replacing the screen mesh of a vibrating screen according to claim 8, characterized in that: The power assembly is mounted on the bearing frame, the support base, or the bottom frame. The power assembly is a drive motor, which is connected to the take-up roller shaft via a main synchronous pulley, a synchronous belt, and a secondary synchronous pulley.

10. The device for replacing the screen mesh of a vibrating screen according to claim 9, characterized in that: The unwinding roller is also equipped with a power unit, and the power units of the winding roller and the unwinding roller move synchronously.

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