2. Place the fine mesh flat on the mother mesh of the vibrating screen, put the upper frame back in place, and tighten the surrounding fine mesh by hand. At the frame edges of the upper frame and the lower frame at both ends of the fuselage, the upper frame and the lower frame are respectively clamped by universal pliers.
3. Cut off all the fine mesh protruding from the frame edge around the vibrating screen except two centimeters.
4. Reinstall the collar, loosen the universal pliers, hook and lock the collar screw.
5. Knock evenly around the beam ring with a soft hammer, and then lock the copper nut to change the fine mesh. If the mother grid and movable plate are removed when the screen of the vibrating screen is replaced, it should be noted that the movable plate must be embedded in the flange at the bottom of the grid. If the mother screen of vibrating screen is damaged, it can be repaired by itself. If it can't be repaired, please return to the factory for repair immediately and prepare a set of mother screen for standby.
Install the screen on the frame.
The frame for installing the screen is in the shape of "Tian", with a length of 1860mm and a width of 560mm. The top and bottom frames are the same, the screen is sandwiched in the middle, and the surrounding frames are fixed with bolts.
The original installation method of the screen is that 14 mesh screen and 10 mesh screen are assembled together, and 14 mesh screen is installed on the upper 10 mesh screen frame, which has good use effect, but there are some problems such as short service life, screen collapse, warp and weft stainless steel wire breakage and damage. Generally, it will be damaged and scrapped after 7-20 days of use.
In order to change this situation, in March 2008, we contacted the screen manufacturer by searching information on the Internet, and specially customized a 2cm stainless steel screen with a width of 560mm and a diameter of 2.5mm for 10 meter. The purpose of customizing the large-hole and large-diameter stainless steel mesh is to make it replace the bottom 10 mesh stainless steel mesh, increase the "load" of the frame, and avoid the salt crushing the upper 14 mesh filter mesh. The idea is scientific and practical, and the application effect is good. One month later, the edge of the 14 screen pressed by the screen body outside the frame was broken due to the loosening of the angle iron of the pressing frame. When it was removed and replaced, it was found that many rigid 2.5cm screen wires were broken due to the direct contact and rigid connection between the 2.5cm screen and the 14 screen. Later, a waste book conveyor belt was simply put up and down between the frame and the screen, which improved the phenomenon of broken thick silk by vibration. When it was replaced again, it was not damaged by vibration. The problem of screen frame is solved, and the connection mode between screen frame and screen body is improved. It is difficult to ensure the reliability of pressure welding because of the simple way of pressing the screen frame with the inner tube of the angle iron pad trolley, and the screen surface is good and the frame edge is often broken.
We have spent a lot of thoughts on how to solve the crimping mode. The advantages and disadvantages of various schemes are analyzed, mainly considering the reliability of compaction and the difficulty of disassembly, so as to be reliable and convenient for rapid disassembly. Finally, from several schemes, we choose to use two oblique irons to press the screen frame.
This method is easy to manufacture, install and disassemble. One inclined iron is welded on the screen frame, and the other inclined block is welded on a screw with a diameter of 25 mm, and the screw passes through the side wall of the vibrating screen. Under the positioning orientation of the thickened cylindrical hole of the reinforcing plate, the inclined iron connecting the screw only moves horizontally under horizontal tension when the screw is tightened. In this way, it runs alternately with the inclined iron welded on the frame, generating downward pressure and pressing the frame on the vibrating screen body. Such a rigid connection can ensure that the screen frame is firmly pressed on the vibrating screen body, without worrying about other problems. The screw is fixed with double nuts and fastened with spring pads, with two sets on one side and four sets of inclined block pressing devices.