CN201415967Y - Plate-type sludge dewatering equipment - Google Patents
Plate-type sludge dewatering equipment Download PDFInfo
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- CN201415967Y CN201415967Y CN2009201196926U CN200920119692U CN201415967Y CN 201415967 Y CN201415967 Y CN 201415967Y CN 2009201196926 U CN2009201196926 U CN 2009201196926U CN 200920119692 U CN200920119692 U CN 200920119692U CN 201415967 Y CN201415967 Y CN 201415967Y
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Abstract
The utility model discloses plate-type sludge dewatering equipment. The sludge dewatering equipment is characterized in that at least three sealed filter press chambers with changeable volumes are formed by elastic bodies among filter press plates and adjacent anti-thrust filter plates, air inlet filter plates, feeding filter plates and thrust filter plates , so that the compressive deformation and resilience of the elastic bodies can realize the deep press watering of a filter cake; and seal plugs are mounted in front of air inlet holes on the air inlet filter plates and the thrust filter plates and in the positions relative to feeding openings on the feeding filter plates and the anti-thrust filter plates adjacently butted with the air inlet filter plates, so as to clog and seal the feeding openings when feeding is stopped upon the completion of low-pressure filter dewatering, and to further prevent sludge from returning to a pipeline during press filtering. The plate-type sludge dewatering equipment has the advantages of reasonable structure, high dewatering efficiency, strong suitability, low energy consumption and use cost and the like.
Description
Technical field
The utility model relates to a kind of device for dehydrating sladge waste, and particularly a kind of plate-type sludge dewatering machine is applicable to deeply dehydrating sludges such as municipal sludge, printing and dyeing sludge, vinasse, paper pulp.
Background technology
Chinese patent notification number CN201198463 " device for dehydrating sladge waste " disclose a kind of a plurality of apart from one another by the movable stripper plate of opening between, use flexible filter bag to device for dehydrating sladge waste, this equipment can apply higher pressure, realize dehydration by changing mud volume, break, turn over the bag trouble easily, can't keep defective such as flexible filter bag cleaning but exist flexible filter bag.
Publication number CN101200342 " a kind of press type sludge dehydration equipment and method of work thereof " discloses a kind of piston drive pressing plate the mud in the material cylinder has been squeezed repeatedly, reduce the dewatering unit of sludge moisture content, its dewatering Principle also is to remove moisture in the mud by changing mud volume.This dewatering unit is beneficial to the dewatering efficiency that improves mud; But have following shortcoming: 1, because the mud majority has corrodibility, the sealing coupling of material cylinder and pressing plate is difficult to permanent maintenance, in case the gap increases, will can't carry out effective airtight squeezing to mud because of mud leaks; 2, because a hydro-cylinder can only be used for a material cylinder, equipment manufacturing cost is higher.
Publication number CN101088944 " enhanced sludge dewatering machine " and notification number CN201099651 " novel enhanced sludge dewatering machine " disclose a kind of by the some sludge dewatering equipments that can be formed by the press filtration plate of oiling and oil extraction, the squeeze force of this sludge dewatering equipment has improved squeezing efficient much larger than plate-and-frame filter press; Yet, there is following problem: the oil pressure sealing coupling of 1, press filtration panel edges, because the corrodibility of mud, work under bad environment is difficult to permanent maintenance; 2, the filter cake thickness on the press filtration plate is because can produce inhomogeneously unavoidably from the difference of opening for feed far and near distance, and the inhomogeneous meeting on this thickness causes not parallel between the adjacent press filtration plate, therefore can't guarantee press filtration plate long-term works better in oil cylinder; 3, the press filtration plate can form shearing action to filter cloth when advancing pressurization, easily filter cloth is broken.
Publication number CN101254368 " a kind of sludge pressing filter method and be used for the enhanced sludge dewatering machine of this method " disclose a kind of by adjacent arrangement the press filtration plate with concave surface and have the enhanced sludge dewatering machine that the press filtration plate of convex surface is formed.The dewatering pressure of this enhanced sludge dewatering machine can reach 3～5Mpa for every square centimeter, has improved the dehydration working efficiency., being sealed and matched between the concave surface press filtration plate of this strong force dewatering machine and the convex surface press filtration plate takes to be difficult under mechanical seal, mechanical engagement are sealed in mud directly contacts the severe environment to keep reliable for a long time; And the filter cake thickness on the press filtration plate can produce inhomogeneous unavoidably because of the difference from the opening for feed far and near distance, and the inhomogeneous meeting on this thickness causes adjacent press filtration plate not parallel, also will influence effectively sealing.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the defective that prior art exists, provide a kind of rational in infrastructure, dewatering efficiency is high, adaptability is strong, less energy consumption, plate-type sludge dewatering machine that use cost is low.
The technical scheme in the invention for solving the above technical problem is: this plate-type sludge dewatering machine, comprise frame, the press filtration plate, hydraulic pulldown and utility appliance, described press filtration plate comprises a thrust filter plate and a thrust filter plate, and each air inlet filter plate and charging filter plate at least, thrust filter plate and thrust filter plate lay respectively at spaced air inlet filter plate and charging filter plate both sides, have feed port on charging filter plate and the thrust filter plate, its constructional feature is: also comprise elastomerics and sealing plug, described elastomerics is positioned at adjacent thrust filter plate, the air inlet filter plate, the charging filter plate, between the thrust filter plate, adjacent thrust filter plate, the air inlet filter plate, charging filter plate and thrust filter plate, and the sealing press filtration chamber that is clipped in elastomerics formation at least three variable-volume between above-mentioned two blocks of press filtration plates, have the air inlet port relative on described air inlet filter plate and the thrust filter plate with feed port, before sealing plug is contained in the air inlet port of air inlet filter plate and thrust filter plate, the sealing plug present position and with the air inlet filter plate, the adjacent involutory charging filter plate of thrust filter plate, feed port on the thrust filter plate is relative.Elastomeric compression set and resilience realize the degree of depth press dewatering to filter cake; The sealing plug with the feed port plug for seal, prevents that the mud backflow enters pipeline in the pressure-filtering process after the low pressure filter dehydration finishes to stop charging.
The described elastomeric thickness of the utility model plate-type sludge dewatering machine is 1～5 times of filter cake thickness, and elastomerics adopts the resilient material of good, the anti-extruding of rebound resilience, antifatigue to make.
Described thrust filter plate of the utility model plate-type sludge dewatering machine and thrust filter plate constitute the sidewall of press filtration chamber, and the edge, two side of air inlet filter plate and charging filter plate all is provided with the elastomerics mounting groove, described elastomerics is embedded in the elastomerics mounting groove, and the sidewall of inlaying elastomeric thrust filter plate, air inlet filter plate, charging filter plate and thrust filter plate is convex press filtration plate.
The described elastomerics of the utility model plate-type sludge dewatering machine is the annular collar that convex surface is arranged, and described elastomerics has expansion slot, and described elastomerics adopts rubber or polyurethane material, and described elastomerics mounting groove is a ring-type T type groove.
At least 2 layers of liner net are laid on the surface of the described convex press filtration of the utility model plate-type sludge dewatering machine plate, described liner net is between filter cloth and press filtration plate, the mesh order number of liner net is 4～40 orders, the mesh order number of the liner net that contacts with filter cloth is the highest, and the order of the liner net that contacts with filtrate collector groove on the press filtration plate is counted minimum.The liner net provides enough support strengths to filter cloth, guarantees its work-ing life.
The described liner net of the utility model plate-type sludge dewatering machine adopts wire netting or nonmetal net, the mesh order number of the liner net that contacts with filter cloth at least 2 layers of liner net is 10～40 orders, and the order number of the liner net that contacts with filtrate collector groove on the press filtration plate is 4～8 orders.
The feed-pipe that the described charging filter plate of the utility model plate-type sludge dewatering machine is connected with feed port on the thrust filter plate is downward-sloping feed-pipe, feed-pipe and feed port horizontal plane angle are 5～30 degree, and described thrust filter plate, air inlet filter plate, charging filter plate and thrust filter plate top have blows the liquid air inlet port.In the filter cake that the inflow of rare mud pressed dry in the feed pipe when downward-sloping feed-pipe prevented discharging.
The described sealing plug of the utility model plate-type sludge dewatering machine adopts identical material with elastomerics, and described feed-pipe and feed port horizontal plane angle are 15 degree.
The described hydraulic pulldown of the utility model plate-type sludge dewatering machine is provided with two oil pumps, and wherein, an oil pump is big flow low-pressure pumps, and another oil pump is the low discharge high-pressure pump.Reduce the facility investment expense, big flow low-pressure pumps is used to advance sealing plug to stop up the sealing pressurization and the low pressure filter dehydration of feed port, and the low discharge high-pressure pump is used for the high-pressure compressing dehydration.
The utility model compared with prior art has the following advantages: the utility model plate-type sludge dewatering machine is rational in infrastructure, and dewatering efficiency height, adaptability are strong.1, adopts elastomerics to constitute the press filtration chamber of variable volume, utilize elastomeric compression set and resilience that filter cake is carried out degree of depth press dewatering, improved the mass dryness fraction of press dewatering efficient and filter cake.Elastomerics is inlayed at the edge of the utility model press filtration plate, realized compressing and pressurizeing mud under the whole plate sealed state, be different from the structure of the similar piston mechanism that prior art takes, the mechanical engagement sealing that has fundamentally solved the prior art existence is difficult to long-term the maintenance reliably, and piston body will damage problems such as filter cloth unavoidably.2, adopt sealing plug to close the feed port structure, mud flows backwards when preventing filter-press dehydration, and effectively guarantees to carry out filter-press dehydration under the sealed state, is beneficial to the raising dewatering efficiency.3, the employing of liner net in the work-ing life of assurance filter cloth, is convenient to regulate filter cake thickness, and is provided enough support strengths to filter cloth.4, the design that has a down dip of feed-pipe, discharging place when making discharging is positioned at the vertex of feed-pipe, and the lower concentration material when preventing discharging in the feed-pipe flows in the filter cake that press dry, and guarantees the mass dryness fraction of filter cake.5, charging filter plate top has blows the liquid air inlet port, can both blow down moisture in the filter pocket in charging filter plate top compressed-air blows before discharging, carries out the liquid gas displacement in the filter cake again, makes things convenient for peeling off of filter cloth and mud cake.
Description of drawings
Fig. 1 is the utility model plate-type sludge dewatering machine example structure synoptic diagram.
Fig. 2 is elastomerics 1 a structure enlarged diagram among Fig. 1.
Fig. 3 looks synoptic diagram for the left side of Fig. 2.
Fig. 4 looks synoptic diagram for the right side of Fig. 2.
Fig. 5 is a D enlarged view among Fig. 2.
Fig. 6 is elastomerics 2 structure for amplifying synoptic diagram among Fig. 1.
Fig. 7 looks synoptic diagram for the left side of Fig. 6.
Fig. 8 looks synoptic diagram for the right side of Fig. 6.
Fig. 9 is a thrust filter-plate structure enlarged diagram among Fig. 1.
Figure 10 looks synoptic diagram for the left side of Fig. 9, and band is analysed and observe.
Figure 11 is an air inlet filter-plate structure enlarged diagram among Fig. 1.
Figure 12 looks synoptic diagram for the left side of Figure 11, and band is analysed and observe.
Figure 13 looks synoptic diagram for the right side of Figure 11, and band is analysed and observe.
Figure 14 is a charging filter-plate structure enlarged diagram among Fig. 1.
Figure 15 looks synoptic diagram for the A-A B of Figure 14, and band is analysed and observe.
Figure 16 looks synoptic diagram for the A-A C of Figure 14, and band is analysed and observe.
Figure 17 is a thrust filter-plate structure enlarged diagram among Fig. 1.
Figure 18 looks synoptic diagram for the right side of Figure 17, and band is analysed and observe.
Figure 19 is for having the air inlet filter-plate structure enlarged diagram of elastomerics, sealing plug and liner net among Fig. 1, band is analysed and observe.
Figure 20 is for having the charging filter-plate structure enlarged diagram of elastomerics, sealing plug and liner net among Fig. 1, band is analysed and observe.
Figure 21 is an embodiment plate-type sludge dewatering machine feed state synoptic diagram, and band is analysed and observe.
Figure 22 is an embodiment plate-type sludge dewatering machine press filtration view, and band is analysed and observe.
Figure 23 is that the press filtration plate is arranged enlarged diagram among Fig. 1, and band is analysed and observe.
Figure 24 is that principle schematic 1 is stopped up in the sealing of embodiment plate-type sludge dewatering machine opening for feed, and band is analysed and observe.
Figure 25 is that principle schematic 2 is stopped up in the sealing of embodiment plate-type sludge dewatering machine opening for feed, and band is analysed and observe.
Embodiment
Below by embodiment, in conjunction with the accompanying drawings the utility model is further described.
Example structure is referring to Fig. 1, this plate-type sludge dewatering machine comprises frame, press filtration plate, elastomerics 12, sealing plug 29, liner net 39, hydraulic pulldown, utility appliance and programmable controller PLC, is made of some press filtrations chamber of mud being carried out filter-press dehydration the press filtration plate.
Frame is used for fixing support press filtration plate, and the pressurization oil cylinder 17 of hydraulic pulldown is installed, and as shown in Figure 1, frame mainly is made of preceding envelope 4, girder plate 15, back envelope 16 and base 18.It is indeformable, firmly stable that the frame of plate-type sludge dewatering machine should be able to be born the above axial tension of 600t.
The press filtration plate is the main body of sludge press filtration, adopts steel press filtration plate, can carry out the High Voltage press filtration, can bear the above filtration pressure of 30Mpa.Referring to Figure 23, the press filtration plate comprises a thrust filter plate 6 and a thrust filter plate 13, and each air inlet filter plate 7 and charging filter plate 8 at least, thrust filter plate 6 and thrust filter plate 13 lay respectively at spaced air inlet filter plate 7 and charging filter plate 8 both sides, form independently press filtration chamber after adjacent two blocks of press filtration plates pressing.As shown in Figure 1, thrust filter plate 6 is fixedly mounted on the preceding envelope 4 of frame, and thrust filter plate 13 is positioned at back envelope 16, is connected with the piston of pressurization oil cylinder 17.Thrust filter plate 6 structures are referring to Fig. 9,10, have feed port 27 on one side of thrust filter plate 6, feed port 27 and feed-pipe 36 communicate, its top has blows liquid air inlet port 30, the bottom has filtrate drain drilling 31, press filtration plate sliding handle fixed orifices 32, discharging arm-tie connection hinge fixed orifices 33 and filtrate collector groove 34 are set around it, and thrust filter plate 6 of the present utility model is provided with the elastomerics mounting groove in the sidewall edge that constitutes the press filtration chamber, and embodiment elastomerics mounting groove is a ring-type T type groove 35.Air inlet filter plate 7 structures are referring to Figure 11～13, have two air inlet ports 28 relative respectively on the air inlet filter plate 7 with the feed port 27 of thrust filter plate 6 and charging filter plate 7, air inlet port 28 communicates with sealing plug open holes 37, air inlet filter plate 7 has with thrust filter plate 6 the same its tops and blows liquid air inlet port 30, the bottom has filtrate drain drilling 31, press filtration plate sliding handle fixed orifices 32, discharging arm-tie connection hinge fixed orifices 33 and filtrate collector groove 34 are set around it, and its both sides sidewall edge all is provided with installs elastomeric ring-type T type groove 35.Charging filter plate 8 structures are referring to Figure 14～16, have two feed ports 27 on two sides of charging filter plate 8, feed port 27 and feed-pipe 36 communicate, and are provided with equally on the charging filter plate 8 to blow liquid air inlet port 30, filtrate drain drilling 31, press filtration plate sliding handle fixed orifices 32, discharging arm-tie connection hinge fixed orifices 33, filtrate collector groove 34 and ring-type T type groove 35.Thrust filter plate 13 structures are referring to Figure 17,18, with air inlet filter plate 7 the same air inlet port 28, sealing plug open holes 37 and the ring-type T type grooves 35 of having, also be provided with on the thrust filter plate 13 and blow liquid air inlet port 30, filtrate drain drilling 31, press filtration plate sliding handle fixed orifices 32, discharging arm-tie connection hinge fixed orifices 33 and filtrate collector groove 34 on the sidewall of thrust filter plate formation press filtration chambers 13.By blowing liquid air inlet port 30 from press filtration plate top compressed-air blows, both can blow down moisture in the filtrate collector groove 34, can carry out liquid gas displacement in the filter cake again, be beneficial to peeling off of filter cloth and filter cake.Referring to Fig. 9,14, the feed-pipe 36 that charging filter plate 8 is connected with feed port 27 on the thrust filter plate 13 is downward-sloping feed-pipe, feed-pipe 36 is 5～30 degree with feed port 27 horizontal plane angle α, and as shown in Figure 9, embodiment feed-pipe 36 is set to 15 degree with the horizontal plane angle α of feed port 27.Downward-sloping feed-pipe, discharge port is in the vertex of feed pipe when guaranteeing the arm-tie discharging, prevents that rare mud overflows in the feed pipe, flows in the filter cake that press dry.Structure the applicant of relevant inclination feed-pipe applies for a patent separately simultaneously.
Referring to Fig. 2～8, elastomerics 12 is for there being the annular collar of convex surface, and wherein, elastomerics 12 shown in Fig. 2～5 is contained on the press filtration plate that forms left side, press filtration chamber, and elastomerics 12 shown in Fig. 6～8 is contained on the press filtration plate that forms right side, press filtration chamber.As shown in Figure 5, elastomerics 12 leaves expansion slot 39, and the effect one of expansion slot 39 is protection elastomericss 12, two, is convenient to install.Referring to Fig. 1,19～22 elastomericss 12 between adjacent thrust filter plate 6, air inlet filter plate 7, charging filter plate 8, thrust filter plate 13, adjacent thrust filter plate 6 and air inlet filter plate 7, air inlet filter plate 8 and charging filter plate 8, charging filter plate 8 and thrust filter plate 13, and the elastomerics 12 that is clipped between above-mentioned two blocks of press filtration plates constitutes sealing press filtration at least three variable-volume, relatively independent chamber, the charging of realization sealed state.Requirement is provided with the quantity of press filtration plate according to output, the combination of multiple pressure filter plate, and fractional yield is big, and air inlet filter plate 7 shown in Figure 1 and charging filter plate 8 are each five, constitute 11 press filtration chambers, and large-scale plate-type sludge dewatering machine can dispose up to a hundred blocks of press filtration plates.Elastomerics 12 is embedded in the elastomerics of press filtration plate and installs in the ring-type T type groove 35, and the sidewall of inlaying thrust filter plate 6, air inlet filter plate 7, charging filter plate 8 and the thrust filter plate 13 of elastomerics 12 is convex press filtration plate.The thickness of elastomerics 12 is 1～5 times of filter cake thickness, generally select 2～3 times for use, elastomerics 12 adopts the resilient material of good, the anti-extruding of rebound resilience, antifatigue to make, such as rubber or polyurethane material, embodiment elastomerics 12 adopts the high-quality natural rubber, add a certain proportion of reinforcer mold pressing and form, this elastomerics has the springback capacity more than 40%, and good stability.The press filtration panel edges is inlayed elastomerics 12, the compression set of elastomerics 12 when press filtration is less than 50%, and the filter cake compression factor is 50%～400%, distortion and resilience when utilizing elastomerics 12 compressions realize significantly filter cake compression, experiment discloses, thickness is that 12 millimeters filter cake can greatly improve the mass dryness fraction of filter cake by squeezing to 3 millimeters.Embodiment processed municipal sludge, when the press filtration chamber that adjacent two blocks of press filtration plates form is in feed state as shown in figure 21, distance H between two blocks of press filtration plates
1Be 10mm, this moment, the water ratio of mud was 80%; As shown in figure 22, sealing plug 29 stops up distance H between 27, two blocks of press filtration plates of feed ports when being in press filtration constant pressure press for extracting juice state
2Be 3mm, this moment, the water ratio of mud was 45%.Relevant elastomeric structure the applicant applies for a patent separately simultaneously.
All be provided as the sealing plug 29 of charging plug on each opening for feed 27 on the press filtration plate, referring to Figure 21～24, before sealing plug 29 was contained in the air inlet port 28 of air inlet filter plate 7 and thrust filter plate 13, sealing plug 29 present positions were with relative with the feed port 27 on the thrust filter plate 6 with air inlet filter plate 7 adjacent involutory charging filter plates 8.Sealing plug 29 is after the low pressure filter dehydration finishes to stop charging, and with feed port 27 plugs for seal, sealing plug is closed the action of feed port 27 and controlled by compressed-air actuated switch by the compressed-air actuated promotion sent into from air inlet port 28.Referring to Figure 23, during charging, obstructed pressurized air backs down sealing plug 29 chargings by feed pressure; Referring to Figure 24, charging is opened pressurized air before finishing the high-pressure compressing dehydration, and sealing plug 29 stops up closes feed port 27, and in the high-pressure compressing dehydration, pressurized air is sent constantly into, and stops the supple of gas or steam before discharging.Before the dehydration of beginning high-pressure compressing, close opening for feed 27 in advance, prevent that the mud backflow enters feed pipe in the pressure-filtering process.The material of sealing plug 29 is identical with elastomerics 12, also adopts rubber or polyurethane material elastomeric material to make.Among Figure 24,25 40 is feed port filter cloth annular indent, plays the effect of protection filter cloth.Structure the applicant of relevant sealing plug applies for Chinese patent simultaneously separately.
Referring to Figure 21,22, at least 2 layers of liner net 39 are laid on the surface of convex press filtration plate, consider easy for installation and cost, generally be no more than 3 layers, liner net 39 is between filter cloth 38 and press filtration plate, and its mesh order number is 4～40 orders, the mesh order number of the liner net 39 that contacts with filter cloth 38 is the highest, can be 10～40 orders, guarantee the work-ing life of filter cloth 38, and enough support strengths are provided for filter cloth 38; The order of the liner net 39 that contacts with filtrate collector groove 34 on the press filtration plate is counted minimum, at 4～8 orders, flows out unimpeded to guarantee filtrate.Another purposes of liner net 39 is to regulate filter cake thickness, and liner net 39 is thick more, and filter cake is just thin more.Liner net 39 can adopt wire netting or nonmetal net.2 layers of liner net 39 are laid on the surface of embodiment convex press filtration plate, and the mesh order number of the liner net 39 that contacts with filter cloth 38 is 20 orders, and the order number of the liner net 39 that contacts with filtrate collector groove 34 is 8 orders.Structure the applicant of relevant liner net applies for a patent separately simultaneously.
Among Fig. 1,1 for railway carriage or compartment plate standing bolt, 9 for blow liquid gas joint, 10 for seal air pipe, 11 for sealing air joint, 14 for sealing air house steward, 19 for filtrate arm, 20 for filtrate joint, 21 for advance mud arm, 22 for advance mud joint, 23 for filtrate manifold, 24 for filtrate manifold valve, 25 for mud house steward valve, 26 is mud house steward for sealing air main valve, 5 for blowing liquid air gas house steward, 2 for house steward's valve, 3.
Embodiment sealed hydraulic and squeezing hydraulic pressure are finished by same set of hydraulic pulldown, hydraulic pulldown is provided with two oil pumps, wherein, an oil pump is big flow low-pressure pumps, be used to advance sealing plug 39 to stop up the sealing pressurization and the low pressure filter dehydration of feed port 27, another oil pump is the low discharge high-pressure pump, is used for the high-pressure compressing dehydration, for the sludge pressing dehydration provides powerful positive pressure, adopt the high-voltage oil cylinder of 35Mpa and the Hydraulic Station that matches with it.
The utility appliance of plate-type sludge dewatering machine mainly comprises the electropneumatic valve in sewage sludge feed pump, air compressor, each pipeline, and all kinds of metering, monitoring instrument etc., for the plate-type sludge dewatering machine works better is given security.For improving the automatization of plate-type sludge dewatering machine, embodiment adopts programmable controller PLC to control, requirement according to deeply dehydrating sludge, water ratio≤40% of design dehydrated sludge, in the different water smokings, implement controls such as difference is spacing, pressurization, pressurize, air blowing, arm-tie discharging, realize the operation whole-course automation.The utility model utility appliance and programmable controller PLC all adopt industry technician known technology and equipment.
The utility model plate-type sludge dewatering machine carries out the sludge press filtration dehydration and may further comprise the steps:
1, forms the press filtration chamber.When dehydration operation begins, start earlier hydraulic pulldown, 17 work of pressurization oil cylinder compress, the occlusion pressure filter plate, form whole press filtration chambers.
2, charging of press filtration chamber and low pressure filter dehydration.After the press filtration chamber forms, the sewage sludge feed pump puts into operation automatically, mud is pressed into the press filtration chamber rapidly, sewage sludge feed pump continuous firing, exert pressure to each press filtration chamber that is full of mud, lower concentration mud is under action of pressure, and most of water is by filter cloth 38, and filtrate collector groove 34 on the press filtration plate and filtrate drain drilling 31 flow out.The charging pressure of charging of press filtration chamber and low pressure filter dehydration is controlled at 0.3～15Mpa.The charging pressure of taking to be higher than prior art 0.5～1Mpa has 2 benefits, and the one, be convenient to mud to be drained off is filled the squeezing space of expiring the press filtration chamber; The 2nd, charging is carried out low pressure simultaneously and is dewatered in advance, removes certain moisture in advance before the high-pressure compressing dehydration, helps to improve output.But charging pressure is too high, can sharply increase the investment of equipment such as sewage sludge feed pump, and therefore, it is 0.5～1Mpa that embodiment controls charging pressure.
3, close the feed port of every block of press filtration plate.After filter cake began to take shape, the sewage sludge feed pump quit work, blow hydraulic pressure contract air from press filtration plate top blow liquid air inlet port 30 in the middle of ring groove enters filter cloth and filtrate collector groove 34, blow away remaining moisture around the filter cake; Close and blow the hydraulic pressure air that contracts, then open the seal compression air, pressurized air promotes each feed port 27 corresponding sealing plug 29 via air inlet port 28, seal each opening for feed 27 rapidly, make each independent press filtration chamber complete closed, carry out the high-pressure compressing dehydration operation again, can not flow backwards or obstruction feed port 27 behind the mud pressurized by feed port 27.
4, high-pressure compressing dehydration.After each opening for feed 27 was closed, pressurization oil cylinder 17 improved oil pressure, carried out the high-pressure compressing dehydration.The dehydration pressure of high-pressure compressing dehydration is controlled at 8～20Mpa, if the target solid content of filter cake is 35%, the pressure that then dewaters is controlled at 8～10Mpa.The pressure that the press filtration plate is subjected to increases, and the elastomerics 12 between the press filtration plate further is out of shape, and each space, press filtration chamber further dwindles, and mud is carried out the High Voltage transfiguration overstock the press for extracting juice dehydration.When space, press filtration chamber narrowed down to set(ting)value, oil pressure was stablized and is carried out pressurize.
Adopting elastomerics 12 to carry out elasticity press filtration deep dehydration is key of the present utility model, uses the elastomerics bigger than filter cake thickness, to guarantee obtaining bigger filter cake compression set with less distortion.Evidence, elastomerics 12 compressions are no more than 50%, and the general compression of filter cake can reach 300%.Be compressed to 3 millimeters such as, filter cake from 10 millimeters, compressed 3.33 times, if elastomerics 12 thickness are 25 millimeters, 7 millimeters distortion only accounts for 28% of elastomerics 12 volumes.The rebound deformation of ordinary rubber allows to be at least 30%, and the fine polyurethane adhesive allows 61%, therefore, can realize significantly filter cake compression in very safe resilience scope.In the low pressure filter dehydration, the volume of elastomerics 12 is compressed 0～10% before mud is filtered dehydration, in the high-pressure compressing dehydration, elastomerics 12 is further compressed, finally its volume ratio normality volume compression 10～50%, elastomerics 12 compressions are to the distortion of inward-outward direction, and resilience causes the volume-diminished of sealing press filtration chamber, and filter cake obtains once more squeezing and presses, and does not add chemical assistant, realize deep dehydration, reduced the sludge treatment expense.
5, open the discharging of press filtration chamber.After the high-pressure compressing dehydration is finished, blow the hydraulic pressure air that contracts and open once more,, blow liquid by blowing liquid air inlet port 28 from filter cloth back side compressed-air blows, middle liquid header valve 24 has to be interrupted closes, mainly be to make to blow the hydraulic pressure air that contracts filter cake is carried out gas-liquid displacement, and with the filter cake filter cloth that blows off, pressurize is carried out after certain hour blows liquid, close and blow the hydraulic pressure air that contracts, the press filtration plate is drawn back in 17 commutations of pressurization oil cylinder, promptly opens the press filtration chamber and carries out discharging.
Through a large amount of filter-press dehydration evidences, to handle the very strong municipal sludge of wetting ability is example, the mud of 80% water ratio, under the dehydration pressure of high-pressure compressing 20Mpa, the maximum compressible ratio of mud is 10: 3, if water ratio≤30% that mud is final, enter 10～12 millimeters the bests of thickness of press filtration chamber mud, otherwise form the high Layer cake of the middle water capacity of filter cake easily, no matter pressure gradient has much, always have in the filter-press dehydration process and for the moment carve capillary force, at this moment dewater and to stop with discharge opeing power reaches balance.For this reason, the press filtration deformation ratio of the utility model plate-type sludge dewatering machine design is 10: 3, and elastomeric variable quantity is 10%～60%, and optimization variables is controlled at 30%.
Specific embodiment described in this specification sheets, its zero, the shape of parts, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done, be included in the protection domain of the utility model patent according to the utility model patent.
Claims (10)
1, a kind of plate-type sludge dewatering machine, comprise frame, the press filtration plate, hydraulic pulldown and utility appliance, described press filtration plate comprises a thrust filter plate and a thrust filter plate, and each air inlet filter plate and charging filter plate at least, thrust filter plate and thrust filter plate lay respectively at spaced air inlet filter plate and charging filter plate both sides, have feed port on charging filter plate and the thrust filter plate, it is characterized in that: also comprise elastomerics and sealing plug, described elastomerics is positioned at adjacent thrust filter plate, the air inlet filter plate, the charging filter plate, between the thrust filter plate, adjacent thrust filter plate, the air inlet filter plate, charging filter plate and thrust filter plate, and the sealing press filtration chamber that is clipped in elastomerics formation at least three variable-volume between above-mentioned two blocks of press filtration plates, have the air inlet port relative on described air inlet filter plate and the thrust filter plate with feed port, before sealing plug is contained in the air inlet port of air inlet filter plate and thrust filter plate, the sealing plug present position and with the air inlet filter plate, the adjacent involutory charging filter plate of thrust filter plate, feed port on the thrust filter plate is relative.
2, plate-type sludge dewatering machine according to claim 1 is characterized in that: described elastomeric thickness is 1～5 times of filter cake thickness, and elastomerics adopts the resilient material of good, the anti-extruding of rebound resilience, antifatigue to make.
3, plate-type sludge dewatering machine according to claim 2, it is characterized in that: described thrust filter plate and thrust filter plate constitute the sidewall of press filtration chamber, and the edge, two side of air inlet filter plate and charging filter plate all is provided with the elastomerics mounting groove, described elastomerics is embedded in the elastomerics mounting groove, and the sidewall of inlaying elastomeric thrust filter plate, air inlet filter plate, charging filter plate and thrust filter plate is convex press filtration plate.
4, plate-type sludge dewatering machine according to claim 3, it is characterized in that: described elastomerics is the annular collar that convex surface is arranged, described elastomerics has expansion slot, and described elastomerics adopts rubber or polyurethane material, and described elastomerics mounting groove is a ring-type T type groove.
5, plate-type sludge dewatering machine according to claim 4, it is characterized in that: at least 2 layers of liner net are laid on the surface of described convex press filtration plate, described liner net is between filter cloth and press filtration plate, the mesh order number of liner net is 4～40 orders, the mesh order number of the liner net that contacts with filter cloth is the highest, and the order of the liner net that contacts with filtrate collector groove on the press filtration plate is counted minimum.
6, plate-type sludge dewatering machine according to claim 5, it is characterized in that: described liner net adopts wire netting or nonmetal net, the mesh order number of the liner net that contacts with filter cloth at least 2 layers of liner net is 10～40 orders, and the order number of the liner net that contacts with filtrate collector groove on the press filtration plate is 4～8 orders.
7, plate-type sludge dewatering machine according to claim 6, it is characterized in that: the feed-pipe that described charging filter plate is connected with feed port on the thrust filter plate is downward-sloping feed-pipe, feed-pipe and feed port horizontal plane angle are 5～30 degree, and described thrust filter plate, air inlet filter plate, charging filter plate and thrust filter plate top have blows the liquid air inlet port.
8, plate-type sludge dewatering machine according to claim 7 is characterized in that: described feed-pipe and feed port horizontal plane angle are 15 degree.
9, plate-type sludge dewatering machine according to claim 8 is characterized in that: described sealing plug adopts identical material with elastomerics.
10, plate-type sludge dewatering machine according to claim 9 is characterized in that: described hydraulic pulldown is provided with two oil pumps, and wherein, an oil pump is big flow low-pressure pumps, and another oil pump is the low discharge high-pressure pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201196926U CN201415967Y (en) | 2009-05-11 | 2009-05-11 | Plate-type sludge dewatering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201196926U CN201415967Y (en) | 2009-05-11 | 2009-05-11 | Plate-type sludge dewatering equipment |
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| Publication Number | Publication Date |
|---|---|
| CN201415967Y true CN201415967Y (en) | 2010-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201196926U Expired - Lifetime CN201415967Y (en) | 2009-05-11 | 2009-05-11 | Plate-type sludge dewatering equipment |
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| Country | Link |
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| CN (1) | CN201415967Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145234A (en) * | 2011-05-04 | 2011-08-10 | 强光初 | Belt-type dewatering filter press |
| CN102267790A (en) * | 2010-06-01 | 2011-12-07 | 徐尉 | Automatic indepth anhydration equipment for sludge |
| CN104099812A (en) * | 2013-04-02 | 2014-10-15 | 李南承 | Board Forming Apparatus Using Paper Sludge |
| CN105314811A (en) * | 2015-06-08 | 2016-02-10 | 上海同臣环保有限公司 | Deep sludge dewatering technology |
| CN105561644A (en) * | 2016-03-09 | 2016-05-11 | 华南理工大学 | High-dryness dewatering device for filter press and dewatering method thereof |
| CN110665264A (en) * | 2019-09-25 | 2020-01-10 | 广东新环机电装备制造有限公司 | Tracking control device of dehydrator, dehydrator and tracking control method |
-
2009
- 2009-05-11 CN CN2009201196926U patent/CN201415967Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267790A (en) * | 2010-06-01 | 2011-12-07 | 徐尉 | Automatic indepth anhydration equipment for sludge |
| CN102145234A (en) * | 2011-05-04 | 2011-08-10 | 强光初 | Belt-type dewatering filter press |
| CN102145234B (en) * | 2011-05-04 | 2013-02-20 | 无锡强工机械工业有限公司 | Belt-type dewatering filter press |
| CN104099812A (en) * | 2013-04-02 | 2014-10-15 | 李南承 | Board Forming Apparatus Using Paper Sludge |
| CN104099812B (en) * | 2013-04-02 | 2016-07-06 | 李南承 | Utilize the panel forming apparatus of paper mill sludge |
| CN105314811A (en) * | 2015-06-08 | 2016-02-10 | 上海同臣环保有限公司 | Deep sludge dewatering technology |
| CN105561644A (en) * | 2016-03-09 | 2016-05-11 | 华南理工大学 | High-dryness dewatering device for filter press and dewatering method thereof |
| CN110665264A (en) * | 2019-09-25 | 2020-01-10 | 广东新环机电装备制造有限公司 | Tracking control device of dehydrator, dehydrator and tracking control method |
| CN110665264B (en) * | 2019-09-25 | 2021-10-22 | 广东新环机电装备制造有限公司 | Tracking control device of dehydrator, dehydrator and tracking control method |
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Owner name: ZHEJIANG HUAZHANG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUAZHANG ELECTRIC (TONGXIANG) CO., LTD. Effective date: 20100512 |
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Effective date of registration: 20100512 Address after: 314500 Zhenhua Road, second industrial zone, Tongxiang Economic Development Zone, Zhejiang, Tongxiang 1068, China Patentee after: Zhejiang Huazhang Technology Co., Ltd. Address before: 314500 Zhenhua Road, second industrial zone, Tongxiang Economic Development Zone, Zhejiang, Tongxiang 1068, China Patentee before: Huazhang Electric (Tongxiang) Co., Ltd. |
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