[0039] Example. Filter press combined with two single-chamber machines
[0040] A filter press composed of two single filter chamber machines. As shown in the figure, it has a single filter chamber machine. Each single filter chamber machine consists of a fixed filter plate 12, a multifunctional filter chamber ring 7, a moving frame 5 and The movable filter plate 20 is composed of at least three connecting rod mounting holes 45 on the outer circumference of the fixed filter plate 12, and the fixed filter plate 12 has a left inlet 46, a left filtrate outlet 47, and a right inlet 48 , The right filtrate outlet 49, the front and back sides of the fixed filter plate 12 each have a circle of the fixed filter plate filter chamber sealing surface 43, in the fixed filter plate filter chamber sealing surface 43, the surface of the fixed filter plate 12 has a circle or The diamond-shaped particles constitute the drainage groove 44, which is a channel for the rapid distribution of fluid in and out. The filter chamber sealing surface 43 of the fixed filter plate and the filter chamber sealing surface 40 on the fixed filter plate side of the multifunctional filter chamber ring 7 will fix the filter The plate filter cloth 9 is clamped and fixed, the filter chamber sealing surface 37 on the moving frame side of the multifunctional filter chamber ring 7 and the moving frame sealing surface 33 are fixed to the movable filter plate filter cloth 6, and the moving frame side sealing surface of the multifunctional filter chamber ring On the sealing surface of the fixed filter plate, a circle of grooves are respectively opened to form the shunt chamber 8. The sealing surfaces form the outer ring 41 and the inner ring 42. The outer ring sealing surface is the shunt chamber sealing surface 36, 39, and the inner ring sealing surface is the filter Chamber sealing surface 37,40. The shunt cavity 8 has a liquid outlet 38 of the shunt cavity.
[0041]The moving frame 5 is fixed with upper and lower fixed blocks 4, 16, the upper and lower connecting rods 2, 15 are respectively fixed on the upper and lower fixed blocks 4, 16, and the upper and lower fixed pulleys 1, 14 are installed on the upper and lower connecting rods 2. , 15, due to the difference in the installation angles of the upper and lower connecting rods, the installation positions of the upper and lower fixed pulleys 1, 14 are staggered by a certain distance in the direction of the guide rod 13 of the movable filter plate 20. The upper and lower fixed pulleys 1, 14 The arc surfaces are tangent to the upper and lower cylindrical surfaces of the guide rod 13; the upper and lower fixed pulleys 1, 14 and the upper and lower tangent points on the cylindrical surface of the guide rod 13 are staggered due to the above reasons, and the guide rod 13 becomes the two A lever whose tangent point is the upper and lower fulcrum. The movable filter plate 20 is on the guide rod 13. This lever mechanism ensures that the movable filter plate 20 cannot move in the up and down direction and ensures the stability of the movable filter plate 20 in the up and down direction. . At the same time, the arcs of the arc surfaces on the upper and lower fixed pulleys 1, 14 and the arcs of the upper and lower cylindrical surfaces of the guide rod 13 are completely tangent to the radius, so that the movable filter plate guide rod covers the circle on the upper and lower fixed pulleys 1, 14 In the arc surface, coupled with the staggering of the front and rear positions of the upper and lower fixed pulleys, the stability of the movable filter plate in the left and right directions is ensured. The movable filter plate 20 has a movement range limiting groove 25 on the side of the movable filter plate 20.
[0042] The bottom left and right hydraulic connecting blocks 29 and 31 are fixed on the back of the moving frame 5. The left and right bottom wheels 28 and 32 are respectively installed on the left and right bottoms of the moving frame 5. The top hanging pulley 30 is on the top of the moving frame 5. 28, 30, and 32 are matched with the three frame connecting rods 52 respectively. The pulleys 28, 30, 32 can slide smoothly on the frame connecting rod 52, and the frame connecting rod 52 is fixed on the filter press frame 50. The frame lock nut 51 is fixed. The movable frame 5 is compressed between the movable frame 5, the multifunctional filter chamber ring 7 and the fixed filter plate 12 through a hydraulic system. The fixed filter plate 12, the multifunctional filter chamber ring 7 and the movable frame 5 constitute a filter chamber cavity 24, The two filter chamber cavities 24 are respectively communicated with the liquid inlet 46, 48 and the filtrate outlet 47, 49 of the fixed filter plate 12, and the two movable filter plates 12 can perform piston movement in their respective filter chamber cavities 24 , The side wall of the multifunctional filter chamber ring 7 has a filter chamber feed port 11 and a function socket 10, 21, 22, 23, and a sensor can be inserted into the function socket to detect the concentration of the filtrate and the concentration of the cleaning solution. The pressure in the cavity and the water content of the filter cake, etc., the outer edge of the moving frame side of the multifunctional filter chamber ring 7 has a convex flange ring 35, the inner edge of the flange ring 35 and the outer edge of the moving frame 5 In cooperation, the movable frame 5 can be clamped into the multifunctional filter chamber ring 7. There are round or diamond-shaped particles on the surface and side of the movable filter plate 20 to form the drainage grooves 26 and 27, which are used for rapid fluid in and out. In the distributed channels, there is a guide rod 13 on the back of the movable filter plate 20, and the hydraulic system pushes the movable filter plate forward or backward in the cavity of the filter chamber through the guide rod. In order to ensure the sealing of the filter chamber, the filter press of the present invention has a flat annular filter chamber sealing membrane 17. The inner edge of the filter chamber sealing membrane 17 is sealed and fixedly sleeved at the root of the guide rod 13 of the movable filter plate 20. In the inner fixed groove 19, the outer edge of the filter chamber sealing membrane 17 is sealed and fixed on the circumference of the filter chamber cavity opening of the movable frame 5 in the outer fixed groove 18 of the filter chamber sealing membrane to form a static seal to ensure the filtrate in the filter chamber Do not leak.
[0043] The working process of the single filter chamber machine in the embodiment is: drape the movable filter plate filter cloth 6 on the sealing surface 33 of the movable frame, leaving room for the movable filter plate 20 to reciprocate, and the flange on the multifunctional filter chamber ring 7 The ring 35 is sleeved and locked on the moving frame 5. The filter chamber sealing surface 37 on the moving frame side of the multifunctional filter chamber ring 7 and the moving frame sealing surface 33 on the moving frame 5 just clamp the movable filter plate filter cloth 6. The moving frame 5 is driven by hydraulic pressure to drive the multifunctional filter chamber ring 7 to move to the fixed filter plate 12. The filter chamber sealing surface 40 on the fixed filter plate side and the fixed filter plate sealing surface 43 on the multifunctional filter chamber ring 7 are also at the same time Clamp and fix the filter plate and filter cloth 9. The hydraulic thrust acting on the moving frame 5 is maintained to maintain a certain airtight pressure between the sealing surfaces. The outer ring and inner ring of the filter chamber sealing membrane 17 are respectively installed on the outer fixing groove 18 of the filter chamber sealing membrane and the inner fixing groove 19 of the filter chamber sealing membrane. The outer fixing groove 18 of the filter chamber sealing membrane is on the moving frame 5, and the filter chamber is sealed The fixed groove 19 in the membrane is on the guide rod 13 of the movable filter plate 20. So far, the entire closed filter chamber 24 is formed.
[0044] Under the action of the pump, the slurry enters the filter chamber through the inlet 11 of the filter chamber. Under the action of the pump pressure, the liquid passes through the movable filter plate filter cloth 6, the fixed filter plate filter cloth 9 and drains through the surface of the movable filter plate. The groove 26 and the surface drain groove 44 of the fixed filter plate are discharged from the filtrate outlet 34 of the moving frame and the filtrate outlet 47 on the left side of the fixed filter plate. After the filter press is completed, the guide rod 13 pushes the movable filter plate 20 to filter by hydraulic pressure. The filter cake in the chamber 24 is squeezed under high pressure to compress the volume of the filter chamber 24. After the pressing is completed, the guide rod 13 remains stationary, and the filtrate outlet 47 on the left side of the fixed filter plate is closed. Compressed air is blown in from the liquid inlet 46 on the left side of the fixed filter plate, passes through the filter cake in the filter chamber 24, takes away the water in the filter cake gap, and filtrates the liquid from the moving frame through the drain groove 26 on the surface of the movable filter plate. The outlet 34 discharges. Then press the washing water into the liquid inlet 46 on the left side of the fixed filter plate, so that the filter cake in the filter chamber cavity 24 drives the movable filter plate 20 back by about 20 mm under the action of water pressure, and the filter chamber cavity 24 is close to A water layer about 20mm thick is formed on the side of the fixed filter plate 12, and then push the guide rod 13 to make the filter cake high pressure forward, so that the water layer penetrates the filter cake and is finally discharged from the filtrate outlet 34 of the moving frame, and repeats several times until the filter cake is washed So far, the filter cake washing is complete. After the filter cake is washed, the guide rod 13 can pressurize the filter cake again to make the filter cake dry.
