The specific embodiment
Embodiment 1
With reference to accompanying drawing 1-8.The present invention includes the plate 1 that several are arranged in parallel and can relatively move along the orientation front and back, described dewaterer is provided with the hydraulic pressure hold-down mechanism that described some plates are compressed.With reference to accompanying drawing 1, in the present embodiment, the described hydraulic pressure hold-down mechanism that compresses plate is to be in plate to arrange the fixed plate 31 of an end and be in the pressing plate 32 by hydraulic jack 100 effects that plate is arranged the other end.In the present embodiment, plate other be provided with can before and after the support slide rail 7 of the plate that relatively moves, described can before and after the plate that relatively moves be provided with the hangers 8 that is supported in slide rail 7.Described can before and after be connected with collapsible pull bar between the plate that relatively moves, this pull bar does not draw in the accompanying drawings.Like this, when oil cylinder drive pressing plate 32 is return, can one by one plate be drawn back by the transmission of pull bar, drive device that relatively moves before and after the plate or the device that plate is moved certainly and never be limited to pull bar, even do not adopt link gear, independent piece ground pulling plate also is feasible.
Be provided with rammer board 11 in the part or all of plate 1, can squeezed dynamicliquid pressure oil pocket 10, can be moved back plate dynamicliquid pressure oil pocket 12 by the rammer board of oiling and oil extraction by the rammer board of oiling and oil extraction, described rammer board is in the face of adjacent plate, as shown in the figure, the adjacent plate faced of described rammer board partly is the some of adjacent plate body in the present embodiment.According to the difference of embodiment, the adjacent plate part that described rammer board is faced also can be the plate part of fixedlying connected with adjacent plate or be the rammer board in the adjacent plate.
In the present embodiment, adopt a side that rammer board is set at plate; In force, also can be rammer board all to be set in the both sides of plate; Go back space set and do not establish the plate of hydraulic fluid chamber and rammer board between above-mentioned plate, these plates of not establishing hydraulic fluid chamber and rammer board can bear squeeze force with the rammer board cooperation of adjacent plate.
As shown in drawings, hydraulic fluid chamber 10 is surrounded by rammer board 11 and plate body, and in the accompanying drawing, drawing reference numeral 13 is the oil-feed oil outlet on the plate body of being opened in of oil pocket 10.Hydraulic fluid chamber 12 is for being in the annular oil cavity of rammer board periphery, it is made of the inwall of the periphery of rammer board 11, plate, the back-up ring 16 be located on the inwall of plate, drawing reference numeral 17 is the sealing ring of oil pocket, and drawing reference numeral 14 is the oil-feed oil outlet on the plate body of being opened in of oil pocket 12.Drawing reference numeral 15 is the turnover oil pipe of above-mentioned oil pocket in Fig. 1.
The adjacent plate surface that rammer board surface and rammer board are faced is respectively equipped with filter cloth 4, is sealed and matched around it when plate is compacted between plate, when plate is compacted, forms drying zone between the adjacent plate part that rammer board 11 and it are faced.
Described dewaterer is provided with the filtrate flow pass, and described filtrate flow pass comprises the main 5 in the plate, and the position of the main 5 of each plate is preferably corresponding, and like this, the main of adjacent plate is communicated with when plate is compacted, like this, can simplify the runner pipe network.Certainly, filtrate that also can each plate is directly flowed out separately from each plate.Shown in accompanying drawing 2,3,5,8, back-up ring 16 and plate body offer the intercommunicating pore 51 of main 5 and drying zone.
The outer surface of described rammer board is provided with the guiding gutter 18 that communicates with flow pass, and the adjacent plate surface that rammer board is faced also is provided with the guiding gutter 18 that communicates with flow pass, to improve dewatering efficiency.Be provided with filter cloth supporting network 9 between filter cloth and plate, this can improve the service life of filter cloth 4.
Described dewaterer is provided with mud and carries runner.Described mud carries runner to comprise that the mud in the plate carries main 6, and the position of the main 6 of each plate is preferably corresponding, and like this, the main of adjacent plate is communicated with when plate is compacted, like this, can simplify the runner pipe network.Shown in accompanying drawing 4,5,6, back-up ring 16 and plate body offer be communicated with main 6 and drying zone advance mud groove 19.
Described filter cloth covers on the surface of described plate, and described filter cloth is clamped at the plate surface around the main at the position of corresponding main opening and by packing ring 41 and filter cloth chuck 42.
During production, compress plate is superimposed with the hydraulic pressure hold-down mechanism.With the input of mud 200 usefulness pumps, through carrying runner, enter between the filter cloth of drying zone, the thickness of mud can be determined by the initial bit of thickness of compressive plate variation or pressing plate according to the dewatering of mud.After filling with mud between the filter cloth of drying zone, stop into dredge pump, start hydraulic system again hydraulic oil is injected oil pocket 10 from hydraulic pressure oilhole 13, hydraulic oil in the oil pocket 12 flows out from hydraulic pressure oilhole 14, rising along with oil pocket 10 hydraulic pressures, rammer board is with the sludge pressing between filter cloth, and the water that squeezing is come out flows out through intercommunicating pore 51 inflow and outflow passages 5, thereby reaches the purpose of press dewatering.After dehydration was finished, the water content of filter residue can be reduced to below 45%, and is mud cake, and after plate was drawn back, mud cake dropped automatically.After dehydration was finished, hydraulic system was injected oil pocket 12 with hydraulic oil from hydraulic pressure oilhole 14, and the hydraulic oil in the oil pocket 10 flows out from hydraulic pressure oilhole 13, and rammer board resets, and the hydraulic pressure hold-down mechanism carries out next working cycles with superimposed the compressing of plate.
The quantity of plate of the present invention and size can require to determine according to Treatment of Sludge output.
Embodiment 2
With reference to accompanying drawing 9-11.Present embodiment all is provided with rammer board 11 in the both sides of plate 1, and all is provided with in both sides the plate 20 of not establishing hydraulic fluid chamber and rammer board is set between the plate 1 of rammer board 11, and the adjacent plate that described rammer board is faced partly is the part of adjacent plate 20 bodies.The outer surface of described rammer board is provided with the guiding gutter 18 that communicates with flow pass, and the adjacent plate surface that rammer board is faced also is provided with the guiding gutter 18 that communicates with flow pass.Also being provided with filtrate in the plate 20 flows out main and mud conveying main, intercommunicating pore 51, advances the mud groove.
Hydraulic fluid chamber 10 is surrounded by the rammer board 11 and the plate body of plate both sides, and in the accompanying drawing, drawing reference numeral 13 is the oil-feed oil outlet on the plate body of being opened in of oil pocket 10.Hydraulic fluid chamber 12 is for being in the annular oil cavity of rammer board periphery, it is made of the inwall of the periphery of rammer board 11, plate, the back-up ring 16 be located on the inwall of plate, drawing reference numeral 17 is the sealing ring of oil pocket, and drawing reference numeral 14 is the oil-feed oil outlet on the plate body of being opened in of oil pocket 12.
All the other structures of present embodiment are identical with embodiment 1, in Fig. 9-11, and the identical implication of representative that drawing reference numeral is identical with Fig. 1-8.
Embodiment 3
With reference to accompanying drawing 12.Present embodiment is on the basis of embodiment 1, carry the upstream 300 of runner that mud check-valves 301 is set at mud, upstream also is provided with bypass 302 behind check-valves 301, magnetic valve 303 is set in bypass 302, the plate 1a that mud is carried main that has for latter end, its mud carries main also to be communicated with gas circuit 304, and magnetic valve 305 is set on the gas circuit 304.Behind defeated full each drying zone of mud, stop into mud, stop that by check-valves 301 mud refluxes; After squeezing finishes, open magnetic valve 303 and 304 simultaneously, gases at high pressure are pressed into mud from gas circuit 304 carry main, the wet mud without squeezing in the main is pushed back sludge-tank from pipeline 302.