WO2007104233A1

WO2007104233A1 - A filter press

Info

Publication number: WO2007104233A1
Application number: PCT/CN2007/000700
Authority: WO
Inventors: Zhuobing Jiang
Original assignee: Zhuobing Jiang
Priority date: 2006-03-10
Filing date: 2007-03-05
Publication date: 2007-09-20
Also published as: CN100376307C; CN1843557A

Abstract

A filter press comprises a single-filter-chamber device which consists of a fixed filter plate (12), a multifunctional filter-chamber-hoop (7), a moving frame (5) and a free filter plate (20). There are a liquid & air inlet (46) and the filtrate outlet (47) on the fixed filter plate (12), and there is a round filter-chamber sealing surface (43) of the fixed filter plate on the fixed filter plate (12), and there are discharging grooves (44) on the surface of the fixed filter plate. The filter cloth (9) of the fixed filter plate is fastened by the filter-chamber sealing surface (43) of the fixed filter plate and a filter-chamber sealing surface (40) of the multifunctional filter-chamber-hoop (7), and the filter cloth (6) of the free filter plate is fixed by another filter-chamber sealing surface (37) of the multifunctional filter-chamber-hoop (7) and the sealing surface (33) of the moving frame. The moving frame (5) compacts the space among the moving frame (5), the multifunctional filter-chamber-hoop (7) and the fixed filter plate (12) by an oil hydraulic system. A filter chamber (24) is formed by the fixed filter plate (12), the multifunctional filter-chamber-hoop (7) and the moving frame (5). The free filter plate (20) can move in a pistontype in the filter chamber (24). There is a filter-chamber feed inlet (11) on the side wall of the multifunctional filter-chamber-hoop (7), and there are discharging grooves (26, 27) on the surface and the side surface on the free filter plate (20), and there is a guide rod (13) on the back of the free filter plate (20). The oil hydraulic system promotes the free filter plate (20) to go forward or backward in the filter chamber (24) by the guide rod (13).

Description

a filter press

Technical field

The present invention relates to a filter press for solid-liquid separation. Background technique

Press-filtration dewatering is a deliquoring method in which a solid or liquid two-phase slurry is passed through a filter medium to achieve solid-liquid separation. At present, the plate and frame filter press is a machine for solid-liquid separation of slurry. Because of its good airtightness, high filtration pressure, easy washing, and strong adaptability to the slurry, it can be used in water treatment, metallurgy, coal washing, food. , pharmaceutical, chemical, and other industries have been widely used. The working process of the existing plate and frame filter press is:

Pressurize the filter plate → feed → filter cake press - "► filter cake wash paint - + filter cake purge → discharge

The disadvantages of the existing plate and frame filter presses are:

1. Due to the structural characteristics of the filter plate of the existing plate and frame filter press, the existing plate and frame filter press is composed of a set of filter plates superposed, and the number of filter chambers is large. The working process of the plate and frame filter press is in each filter room. At the same time, while interfering with each other, the working efficiency of the whole machine depends on the working efficiency of the individual filter chambers.

2. The large number of filter plates makes the number of parts of the whole machine huge, the automation control is complicated, and the working condition of the filter chamber is difficult to detect. There are many sealing faces of the whole machine, and the processing requirements of the filter plates are high, and it is difficult to control the capillary exudation of the filter cloth.

3. The press of the filter cake achieves a change in the volume of the filter chamber by deformation of the diaphragm or filter plate seal. The range of volume change of the filter chamber is limited by the diaphragm or the filter plate seal itself, resulting in limited volume change, limited service life of the diaphragm or filter plate seal, and high replacement cost.

4. The filtration pressure and the pressure of the press and the sealing pressure of the filter chamber act and react, and the kinetic energy consumption is huge.

5. The cleaning of the filter cloth is carried out after the open cleaning or disassembly after the filter plate is pulled. The cleaning work is large, and the cleaning liquid forms the secondary filtration workload.

6. The processing requirements of the filter cloth are high, the filter cloth is difficult to use directly, the filter cloth of large equipment is difficult to replace, and the filter cloth replacement takes a long time. Summary of the invention

The object of the present invention is to provide a filter press with superior performance:

The technical solution of the present invention is as follows - a filter press comprising a single filter chamber machine, the single filter chamber machine consisting of a fixed filter plate, a multi-function filter chamber ring, a moving frame and a movable filter plate, and at least three on the outer periphery of the fixed filter plate Connecting rod mounting holes, fixed filter plate with inlet air inlet And the outlet of the filtrate, the front side of the fixed filter plate has a sealing groove for the filter plate filter chamber in a circle, and a drainage groove is arranged on the surface of the fixed filter plate in the sealing ring of the fixed filter plate filter chamber, and the sealing surface of the filter plate filter chamber is fixed The filter chamber sealing surface of the fixed filter plate side of the multifunctional filter chamber ring clamps and fixes the fixed filter plate filter cloth, and the filter chamber sealing surface of the movable frame ring on the moving frame side and the moving frame sealing surface fix the movable filter plate filter cloth. The moving frame presses the moving frame, the multi-function filter chamber ring and the fixed filter plate through the hydraulic system, and the fixed filter plate, the multi-function filter chamber ring and the moving frame constitute a filter chamber cavity, the filter chamber cavity and the fixed filter The inlet inlet and the outlet of the plate are connected to each other, and the movable filter plate can be used for piston movement in the cavity of the filter chamber, and the inlet of the filter chamber on the side wall of the multifunctional filter chamber ring, the surface and the side of the movable filter plate There is a drain groove on the side, and a guide rod is arranged on the back of the movable filter plate. The oil pressure system pushes the movable filter plate forward or backward in the filter chamber cavity through the guide rod.

In the above filter press, the multifunctional filter chamber ring has a function jack on the side wall, and can insert various sensors and functional parts.

The above filter press has a flat annular filter chamber sealing film, and the inner edge of the filter chamber sealing film is sealed and fixed on the guide rod root of the movable filter plate, and the outer edge of the filter chamber sealing film is sealed and fixed in the filter chamber of the moving frame. The circumference of the cavity is open to ensure that the filtrate in the filter chamber is not leaked.

In the above filter press, the sealing surface on the fixed filter plate side of the multi-functional filter chamber ring and the sealing surface on the moving frame side of the multi-function filter chamber ring respectively have a groove around the circumference to form a split cavity, and a split cavity There is a diversion chamber outlet.

In the above filter press, the side of the movable filter plate has a movable filter plate movement range restricting groove.

The above filter press may have two single filter chamber machines, and the two single filter chamber machines share a fixed filter plate, and the fixed filter plate has a liquid discharge groove and a liquid inlet on both sides of the filter plate. And filtrate outlet.

The filter press of the present invention has the following characteristics -

1. Good airtightness, high filtration pressure, easy washing, strong adaptability to slurry;

2. The number of filter chambers is small and the structure is simple. The filter chamber on the same plate and frame filter press can perform all functions by itself. The working process of each filter chamber does not depend on other filter chambers. The workflow of the plate and frame filter presses is The filter chambers do not interfere with each other, forming a time superposition effect, so that the working efficiency of the whole machine is greatly improved;

3, the volume of the filter chamber is not limited, can be simply adjusted according to the material characteristics and the requirements of the liquid content of the filter cake, the main power consumption of the whole machine is to improve the solid content of the filter cake;

4. The filter cloth is cleaned in the machine, the monitoring of the filter chamber condition is simple and convenient, and the filter cake washing method is scientific and effective. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side cross-sectional view of an embodiment of a single filter chamber machine. Figure 2 is a side elevational view of the movable filter plate 20 of the embodiment single filter chamber machine.

Figure 3 is a side elevational view of the movable filter plate 20 in the single filter chamber machine.

Figure 4 is a rear elevational view of the moving frame 5 in a single filter chamber machine.

Figure 5 is a side cross-sectional view of the moving frame 5 in the single filter chamber machine.

Figure 6 is a front elevational view of the multi-purpose filter chamber ring 7 in a single filter chamber machine.

Figure 7 is a cross-sectional view of the multi-purpose filter chamber ring 7 in a single filter chamber machine.

Figure 8 is a three-dimensional right schematic view of the multi-purpose filter chamber ring 7 in a single filter chamber machine.

Figure 9 is a front elevational view of the fixed filter plate 12 in a single filter chamber machine.

Figure 10 is a side elevational view of the fixed filter plate 12 in a single filter chamber machine.

Figure 11 is a two-axis side view of the fixed filter plate 12 in the single filter chamber machine.

Figure 12 is a schematic illustration of a single filter chamber machine combined filter press.

Figure 13 is a three dimensional schematic view of a filter press in combination with two single filter chamber machines.

Figure 14 is a three-dimensional schematic view 2 of a two-filter chamber machine combined filter press.

The figures in the figure are: 1 : upper pulley; 2: upper link; 3: moving frame hydraulic connecting pin; 4: upper fixing block; 5: moving frame; 6: movable filter plate filter cloth; 7: multi-function filter Chamber ring; 8: Split cavity; 9: Fixed filter plate filter cloth; 10: Function socket 1; 11: Filter chamber feed port; 12: Fixed filter plate; 13: Guide rod; 14: Lower pulley; 15: Lower Connecting rod; 16: lower fixing block; 17: filter chamber sealing film; 18: filter chamber sealing film outer fixing groove; 19: filter chamber sealing film inner fixing groove; 20: movable filter plate; 21: function socket 2; : Function jack 3 ; 23: Function jack 4; 24: Filter chamber cavity; 25 : Active filter plate movement range limit groove; 26: Active filter plate surface drain groove; 27: Active filter plate side surface uniform Part of the drain groove; 28: Move the box to the lower left pulley; 29: Move the box to the lower left hydraulic connection block; 30: Move the frame top suspension pulley; 31: Move the box to the lower right hydraulic connection block; 32: Move the frame to the lower right pulley; 33 : moving frame sealing surface; 34: moving frame filtrate outlet; 35 : flange ring; 36: multi-function filter ring moving partition side sealing cavity seal 37: filter chamber sealing surface on the moving frame side of the multi-function filter chamber ring; 38: split chamber outlet port; 39: split chamber sealing surface on the fixed filter plate side of the multi-function filter chamber ring; 40: multi-function filter chamber The filter chamber sealing surface on the fixed filter plate side of the ring; 41: outer ring; 42: inner ring; 43: fixed filter plate sealing surface; 44: fixed filter plate surface drain groove; 45 fixed filter plate connecting rod mounting hole; 46: fixed inlet filter inlet on the left side of the filter plate; 47: fixed filtrate outlet on the left side of the filter plate; 48: inlet port on the right side of the fixed filter plate; 49: outlet of the filtrate on the right side of the fixed filter plate; 50: filter press Rack; 51: Rack lock nut; 52: Rack linkage. detailed description Embodiment. Two single filter chamber machine combined filter press

A filter press with two single filter chamber machines, as shown in the drawing, which has a single filter chamber machine, each single filter chamber machine consists of a fixed filter plate 12, a multi-function filter chamber ring 7, a moving frame 5 and The movable filter plate 20 is configured to have at least three connecting rod mounting holes 45 on the outer circumference of the fixed filter plate 12. The fixed filter plate 12 has a left inlet inlet 46, a left filtrate outlet 47 and a right inlet inlet 48. , the filtrate outlet 49 on the right side, the filter plate sealing surface 43 is fixed on the front side and the back side of the fixed filter plate 12, and the surface of the fixed filter plate 12 in the ring 43 of the fixed filter plate filter chamber has a circular shape or The diamond-shaped particles, which constitute the drainage groove 44, are channels for the rapid distribution of fluid in and out, and the filter chamber sealing surface 43 of the fixed filter plate filter chamber sealing surface 43 and the fixed filter plate side of the multifunctional filter chamber ring 7 will be fixedly filtered. The filter cloth 9 is clamped and fixed, and the filter chamber sealing surface 37 on the moving frame side of the multi-function filter chamber ring 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 multi-function filter chamber ring A circumferential groove on the upper and fixed filter plate side sealing faces respectively form a diverting cavity 8 The sealing surface forms an outer ring 41 and an inner ring 42, the outer ring sealing surface is a split cavity sealing surface 36, 39, and the inner ring sealing cover is a filter chamber sealing surface 37, 40. The split chamber 8 has a split chamber outlet 38.

The moving frame 5 is fixed with upper and lower fixing blocks 4, 16, and the upper and lower connecting rods 2, 15 are respectively fixed on the upper and lower fixing blocks 4, 16, and the upper and lower fixed pulleys 1, 14 are mounted on the upper and lower connecting rods 2 On the 15th, due to the difference in the mounting angles of the upper and lower links, the mounting positions of the upper and lower fixed pulleys 1, 14 are shifted by a certain distance along the guiding rod 13 of the movable filter plate 20, and the upper and lower fixed pulleys 1, 14 The arcuate faces are respectively tangent to the upper and lower cylindrical faces of the guide bar 13; the upper and lower tangential points of the upper and lower fixed pulleys 1, 14 and the guide bar 13 are staggered for the above reasons, so that the guide bar 13 becomes The tangential point is the lever of the upper and lower fulcrums, and 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, ensuring the stability of the movable filter plate 20 in the up and down direction. . At the same time, the arc of the arc surface on the upper and lower pulleys 1, 14 and the arc 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 wraps the circle on the upper and lower fixed pulleys 1, 14. In the arc surface, the misalignment of the front and rear positions of the upper and lower pulleys is ensured to ensure the stability of the movable filter plate in the left and right direction. The movable filter plate 20 has a movable filter plate movement range restricting groove 25 on the side.

The lower left hydraulic connecting block 29 and the lower right hydraulic connecting block 31 are fixed to the back surface of the moving frame 5, and the lower left pulley 28 and the lower right pulley 32 are respectively disposed at the left and the right of the moving frame 5, and the top suspension pulley 30 is mounted on the top of the moving frame 5, the pulley 28, 30 and 32 respectively cooperate with the three frame links 52, the pulleys 28, 30, 32 can slide smoothly on the frame link 52, and the frame link 52 is fixed on the filter frame 50, The frame lock nut 51 is fixed. The moving frame 5 presses the moving frame 5, the multi-purpose filter chamber ring 7 and the fixed filter plate 12 by the hydraulic system, and the fixed filter plate 12, the multi-purpose filter chamber ring 7 and the moving frame 5 constitute a filter chamber cavity 24, Two filter chamber cavities 24 are each fixed to the filter plate 12 The inlet inlets 46, 48 and the filtrate outlets 47, 49 are in communication, and the two movable filter plates 12 are piston-operated in the respective filter chamber cavities 24, and the filter chambers on the side walls of the multi-function filter chamber ring 7 are provided. The feed port 11 and the function jacks 10, 21, 22, 23 can be inserted into the function jack to detect the concentration of the filtrate, the concentration of the cleaning liquid, the pressure in the filter chamber cavity, and the water content of the filter cake. The outer edge of the moving frame side of the functional filter chamber ring 7 has a ring-shaped flange ring 35. The inner edge of the flange ring 35 cooperates with the outer edge of the moving frame 5, and the moving frame 5 can be engaged with the multi-function filter ring. In the seventh, the movable filter plate 20 has circular or diamond-shaped particles on the surface and the side surface thereof, and constitutes the drainage grooves 26, 27, which are channels for the fluid to enter and exit the ^«1 distribution, and the movable filter plate 20 has a guide rod on the back side. 13. The oil pressure system pushes the movable filter plate forward or backward in the filter chamber cavity through the guide rod. In order to ensure the sealing property of the filter chamber, the filter press of the present invention has a flat annular filter chamber sealing film 17, and the inner edge of the filter chamber sealing film 17 is sealed and fixed to the filter chamber sealing film at the root of the guide rod 13 of the movable filter plate 20. In the inner fixing groove 19, the outer edge of the filter chamber sealing film 17 is sealed and fixed in the outer sealing groove 18 of the filter chamber sealing film on the circumference of the filter chamber opening of the moving frame 5 to form a static seal to ensure the filtrate in the filter chamber. Do not leak.

In the embodiment, the working process of the single filter chamber machine is: draping the movable filter cloth filter cloth 6 on the moving frame sealing surface 33, leaving the space for the reciprocating movement of the movable filter plate 20, the flange on the multifunctional filter chamber ring 7 The 35 sets of the ring are combined and locked on the moving frame 5, and the filter chamber sealing surface 37 on the moving frame side of the multi-purpose filter chamber ring 7 and the moving frame sealing surface 33 on the moving frame 5 just clamp the movable filter cloth filter cloth 6. The moving frame 5 is driven by the hydraulic pressure to drive the multi-purpose filter chamber ring 7 to move to the fixed filter plate 12. The filter chamber sealing surface 40 and the fixed filter plate sealing surface 43 on the fixed filter plate side of the multi-purpose filter chamber ring 7 are simultaneously Clamp and fix the filter cloth filter cloth 9. The hydraulic thrust acting on the moving frame 5 is maintained to maintain a certain sealing pressure between the sealing faces. The outer ring and the inner ring of the filter chamber sealing film 17 are respectively mounted on the filter chamber sealing film outer fixing groove 18 and the filter chamber sealing film inner fixing groove 19, and the filter chamber sealing film outer fixing groove 18 is on the moving frame 5, and the filter chamber is sealed. The intra-membrane fixing groove 19 is on the guide rod 13 of the movable filter plate 20. The entire closed filter chamber 24 is thus formed.

The slurry enters the filter chamber through the filter chamber feed port 11 under the action of the pump. Under the action of the pump pressure, the liquid passes through the movable filter plate filter cloth 6, and the fixed filter plate filter cloth 9 is discharged through the surface of the movable filter plate. The groove 26 and the fixed filter plate surface drain groove 44 are discharged from the moving frame filtrate outlet 34 and the fixed filter plate left filtrate outlet 47. After the filter press is completed, the guide rod 13 pushes the movable filter plate 20 against the filter by the hydraulic pressure. The filter cake in chamber 24 is subjected to high pressure pressing to compress the volume of filter chamber 24. At the end of the press, the guide rod 13 remains stationary, closing the filtrate outlet 47 on the left side of the fixed filter plate. The compressed air is blown from the inlet inlet 46 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 moves the filtrate from the moving frame through the surface of the movable filter plate. The outlet 34 is discharged. Then, the washing water is pressed from the left inlet air inlet 46 of the fixed filter plate, so that the filter cake in the filter chamber cavity 24 drives the movable filter plate 20 to retreat by about 20 mm under the action of water pressure, and the filter chamber cavity 24 depends on A water layer of about 20 mm thick is formed on the side of the fixed filter plate 12, and the guide rod 13 is pushed. The filter cake is subjected to a high pressure forward, and the water layer is passed through the filter cake and finally discharged from the moving frame filtrate outlet 34, and repeated until the filter cake is washed, and the filter cake washing is completed. After the filter cake is washed, the guide rod 13 can be repressurized to push the press cake to make the filter cake dry.

The function jacks of the multi-function filter chamber ring 1 and 2 are installed to detect the filter cake in the filter chamber 24 to determine whether the filter cake is washed, compacted or other requirements are met.

After the filter cake detection meets the requirements, under the action of the hydraulic pressure of the moving frame 5, the multi-function filter chamber ring 7 is driven back away from the fixed filter plate 12, and after retreating to a certain position, the movable filter plate 20 is driven back by the mechanism, and then filtered. The cake relies on gravity to disengage the surface of the fixed filter cloth filter cloth 9 into the filter cake collection system.

After the filter cake is detached, the moving frame 5 repeats the foregoing actions to reconstitute the closed filter chamber cavity 24, and after forming the filter chamber cavity 24, the cleaning member mounted on the functional jacks 3, 4 of the multifunctional filter chamber ring 7 starts the squirting activity. The filter cloth filter cloth 6 fixes the surface of the filter cloth filter cloth 9 to maintain the filtering ability of the filter cloth. The sprayed and washed materials are left at the bottom of the filter chamber 24, and are discharged together with the filtrate and the filter cake of the next cycle.

Claims

Rights request

A filter press comprising a single filter chamber machine, characterized in that: a single filter chamber machine consists of a fixed filter plate (12), a multi-purpose filter chamber ring (7), a moving frame (5) and a movable filter plate ( 20) The fixed filter plate (12) has at least three connecting rod mounting holes (45) on the outer circumference thereof, and the fixed filter plate (12) has a liquid inlet (46) and a filtrate outlet (47), and the fixed filter plate (12) The front side of the filter plate sealing chamber sealing surface (43) is fixed on the front side of the filter plate, and the liquid filter groove (44) is fixed on the surface of the fixed filter plate in the sealing surface (43) of the fixed filter plate filter chamber, and the filter plate filter chamber is fixed. Sealing surface (44) and multi-function filter chamber ring

(7) The filter chamber sealing surface (40) on the fixed filter plate side clamps and fixes the fixed filter plate filter cloth (9), and the filter chamber sealing surface (37) on the moving frame side of the multi-function filter chamber ring (7) Move the frame sealing surface (33) to fix the movable filter plate filter cloth (6), move the frame (5) between the moving frame (5), the multi-function filter chamber ring (7) and the fixed filter plate (12) through the hydraulic system Pressing, fixed filter plate (12), multi-function filter chamber ring (7) and moving frame (5) constitute filter chamber cavity (24), filter chamber cavity (24) and fixed filter plate (12) The air inlet (46) and the filtrate outlet (47) are in communication, and the movable filter plate (20) can be piston-type in the filter chamber cavity (24), and the filter chamber on the side wall of the multi-function filter chamber ring (7) At the material port (11), there are drainage grooves (26, 27) on the surface and side of the movable filter plate (20), and a guide rod (13) is arranged on the back of the movable filter plate (20), and the oil pressure system passes through the guide rod ( 13) Push the movable filter plate (20) forward or backward within the filter chamber cavity (24).

2. A filter press according to claim 1, characterized in that the multifunctional filter housing ring (7) has functional jacks (10, 2 22, 23) on its side walls.

The filter press according to claim 1, characterized in that: a flat annular filter chamber sealing film (17) is provided, and an inner edge of the filter chamber sealing film (17) is sealed and fixed on the movable filter plate (20). Guide rod (13) root, filter chamber sealing membrane

The outer edge of (17) is sealed and fixed on the circumference of the opening of the filter chamber cavity (24) of the moving frame (5) to ensure that the filtrate in the filter chamber is not leaked.

The filter press according to claim 1, wherein: the sealing surface on the fixed filter plate side of the multifunctional filter chamber ring (7) and the sealing surface on the moving frame side of the multifunctional filter chamber ring There are a circle of grooves on the top to form a split chamber (8), and the split chamber (8) has a split chamber outlet (38).

The filter press according to claim 1, characterized in that: the side of the movable filter plate (20) has a movable filter plate movement range restricting groove (25).

6. The filter press according to claim 1, wherein: there are two single filter chamber machines, and two single filter chamber machines share a fixed filter plate, and both sides of the fixed filter plate have respective Drainage channels, inlet inlets (46, 48) and filtrate outlets (47, 49).