CN104860504A - Dewatering method based on double-body type sewage sludge deep dewatering device - Google Patents
Dewatering method based on double-body type sewage sludge deep dewatering device Download PDFInfo
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- CN104860504A CN104860504A CN201510259572.6A CN201510259572A CN104860504A CN 104860504 A CN104860504 A CN 104860504A CN 201510259572 A CN201510259572 A CN 201510259572A CN 104860504 A CN104860504 A CN 104860504A
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- 238000000034 method Methods 0.000 title abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 208000005156 Dehydration Diseases 0.000 claims description 49
- 230000018044 dehydration Effects 0.000 claims description 49
- 238000006297 dehydration reaction Methods 0.000 claims description 49
- 238000001914 filtration Methods 0.000 claims description 49
- 239000004744 fabric Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 5
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- 239000010802 sludge Substances 0.000 abstract description 14
- 238000001125 extrusion Methods 0.000 abstract description 5
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- 238000005056 compaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a dewatering method based on a double-body type sewage sludge deep dewatering device. According to the dewatering method, sludge which is primarily dewatered and has higher moisture content is sent to a filter-press cavity from a storage bin by a feeding device, two deep dewatering sub-devices are adopted simultaneously, each sub-device can finish deep dewatering of the sludge independently, and the efficiency is doubled than that of a single dewatering device; during secondary deep dewatering, a power transmission mechanism in an extrusion transmission system is extruded to act to drive a push-pull plate, so that a first toggle rod and a second toggle rod are driven to push ahead to act on corresponding extrusion plates; when the sludge is extruded, mutual extrusion is realized by the aid of the mutual action force of the two sub-devices, only smaller force is required from the outside (the power transmission mechanism), the most labor-saving section is realized when the first toggle rod and the second toggle rod are located on the same linear positions, high-pressure filter-press deep dewatering of the sludge can be realized as long as the position of the push-pull plate is kept by external force, and accordingly, the sludge with low moisture content is obtained.
Description
Technical field
The present invention relates to sewage sludge process field, specifically a kind of dewatering based on catamaran type sewage sludge deep dehydrator.
Background technology
Mud is the product after sewage disposal, the a large amount of mud produced after current sewage disposal need process further, dehydration is the important step of sludge treatment, its objective is and most of moisture in mud is removed, make solids level enrichment, significantly reduce sludge volume to reduce investment outlay, improve sludge calorific value and save energy, for the minimizing of mud and follow-up disposal significant.Dehydration generally can be divided into mechanical dehydration and mummification dehydration, mummification dehydration realizes the deep dehydration of mud by consuming a large amount of heats by the moisture evaporation in mud, mechanical dehydration is the dewatering type the most effective, energy consumption is minimum, and current employing conditioning and mechanical means carry out deep dehydration to mud generally can make water ratio reach 80%-60%.
Mechanical dehydration mode and equipment mainly contain belt filter dehydration, centrifuge dehydration, filter press dehydration three major types, belt filter dehydration is by flocculation, gravity dehydration, wedge shape dehydration, dehydration technology, high press-dehydrating, extruding between band realizes continuity dehydration, and the filter cake moisture content after dehydration is about 75%-80%.Centrifuge dehydration is the density difference utilizing solid-liquid two-phase, makes solid phase and liquid phase separation, reach centrifugal settling by the centrifugal acceleration of high speed rotating, adopts centrifuge dehydration moisture content of the cake generally about 80%.Mud is extruded by spiral pump by filter press dehydration, and moisture is by filter cloth, and mud is in sheet frame, and the pressure of squeezing is generally at 1.6Mpa, and the moisture percentage in sewage sludge of barrier film plate-and-frame filter press dehydration is generally about 60%.Dehydration equipment also has dish spiral shell water extracter, steel belt machine, and dish spiral shell water extracter utilizes the filter space formed between rotating ring and stationary ring to realize dehydration, but is bad at the dehydration of the mud that particle is large, hardness is large, and moisture percentage in sewage sludge is between 75%-80%.
Ultra-high voltage elasticity squeezing machine is that a kind of pressure is larger, the filtering equipment that efficiency is higher and solid-liquid separating equipment, and whole process is mainly divided into charging--elasticity squeezing--connects liquid--Four processes such as discharging.First be fed filtration, transport material to filter chamber by fresh feed pump, carry out solid-liquid separation by the press filtration of fresh feed pump while charging, namely once filter; Elasticity is squeezed, and one end of equipment is fixed, and the other end applies ambient pressure by hydraulic ram, compresses chamber space and squeezes, be i.e. twice pressing by elastic force-transmitting device (spring); Filtrate is discharged, and is discharged, the filtrate leached in fed filtration and elasticity expressing process for space is abdicated in next step discharging by mobile liquid dish; Automatic pulling plate, automatic pulling plate mechanism is by the transmission chain on transmission and drawing device, and filter cake Automatic-falling, is transported by the transportation equipment of bottom, major equipment organic frame and Controlling System, filter plate and filter cloth system, automatic pulling plate mechanism, Jie Ye mechanism.This equipment pressure, directly from the pressure of hydraulic ram, is direct squeezing, and it is 1.0 ~ 1.5h that squeeze pressure can reach the mono-batch of work period of 5-7 MPa, and working efficiency is 3-4 times of diaphragm filter press.The spring of this equipment needs to stand repeated load, and load is very large, and the requirement for spring is higher, and the pressure of this equipment is comparatively large simultaneously, requires high for power system.
For current in a large number can by sludge dewatering to the dehydration equipment (belt machine, folded spiral shell machine, whizzer etc.) of water ratio about 80% what use, these equipment are all replaced to deeply dehydrating sludge or ultra-high voltage dehydration equipment, drop into comparatively large and be a kind of larger waste concerning the existing equipment used.So, invent a kind of equipment that is that can use with these coordinative composition of equipments and then that realize secondary deep dewatering significant, be also simultaneously reality in the urgent need to.
Summary of the invention
In view of this, the present invention is directed to moisture percentage in sewage sludge is high, high to power demand, energy consumption is large problem after the process that above-mentioned prior art exists, provide a kind of energy consumption low, realize secondary deep dewatering to reduce the dewatering based on catamaran type sewage sludge deep dehydrator of moisture percentage in sewage sludge further.
Technical solution of the present invention is, a kind of dewatering based on catamaran type sewage sludge deep dehydrator of following structure is provided, described catamaran type sewage sludge deep dehydrator comprises two sub-devices of deep dehydration and extruding transmission system, the sub-device symmetry of two described deep dehydrations is divided into the both sides of extruding transmission system, the sub-device of each deep dehydration includes cylindrical shell, storage bin, be arranged on the stripper plate in cylindrical shell and the base plate being arranged on cylinder body bottom, press filtration chamber is formed between described stripper plate and base plate, described storage bin to be positioned at above press filtration chamber and coupled logical, described base plate is provided with the drainage mechanism that in voltage supply filter chamber, moisture is discharged, described extruding transmission system comprises power drive mechanism, draw back plate, the first toggle link and the second toggle link, described power drive mechanism is connected to drive draw back plate to move with draw back plate, the first described toggle link and one end of the second toggle link are hinged on the both sides of draw back plate respectively, and the other end of the first toggle link and the second toggle link is hinged on corresponding stripper plate respectively,
Described deep dehydrator also comprises the helix transporting device for feeding, described helix transporting device comprises the first transportation section and the second transportation section, the rotary orientation of the first transportation section and the second transportation section is contrary, the discharge port of the two is corresponding with the storage bin of two sub-devices of deep dehydration respectively, and the middle upper part of helix transporting device is provided with hopper;
Described dewatering comprises the following steps:
1) mud after preliminary hydro-extraction, storage bin corresponding is with it sent into respectively by the first transportation section of helix transporting device and the second transportation section, open opening for feed, and be pushed in press filtration chamber by storage bin, keep feed inlet and outlet to be in closing condition and think that press filtration is prepared;
2) drive the first toggle link and the second toggle link by extruding transmission system, the first toggle link and the second toggle link exert a force respectively to the stripper plate of two sub-devices of deep dehydration, start to carry out press filtration to mud, are discharged by moisture by drainage mechanism in press filtration chamber;
3), after dehydration, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out.
Adopt above structure and method, the present invention compared with prior art, have the following advantages: the mud higher through preliminary hydro-extraction water ratio is sent into press filtration chamber by pay-off from storage bin, adopt two sub-devices of deep dehydration simultaneously, every sub-device can complete independently deeply dehydrating sludge, and the single dewatering unit of efficiency ratio doubles, during secondary deep dewatering, power drive mechanism action in extruding transmission system, drive draw back plate, thus drive the first toggle link and the second toggle link to push ahead, to act on corresponding stripper plate, in the process that mud is extruded, rely on the interaction force of two sub-devices, to realize mutual extruding, only need the power that external world's (power drive mechanism) is less, when the first toggle link and the second toggle link are in same linear position, reach the most labour-saving stage, as long as the position of external force maintenance draw back plate can meet the high pressure press filtration deep dehydration to mud, thus obtain the low mud of water ratio.
As preferably, described actuating unit comprises oil motor, first gear, second largest gear and pinion(gear), described oil motor is all connected by gear pair with pinion(gear) with first gear, second largest gear, described pinion(gear) is fixedly connected with first gear is concentric, the end of described draw back plate is articulated with the eccentric position of second largest gear, forms toggle.Adopt this structure, by oil motor tooth and first gears meshing, the once amplification of formation power and deceleration, the secondary forming power by pinion(gear) and second largest gear again amplifies and slows down, by being arranged on the draw back plate of second largest gear eccentricity position, convert second largest pinion rotation to translational motion, then pass through the amplification of draw back plate and the one or two toggle link power, thus realize only needing a less driving source can realize filtering the ultra-high voltage of mud.
As preferably, described drainage mechanism is included on base plate and offers multiple aperture logical for moisture flow and flow channel for liquids, and plate upper surface is wrapped in filter cloth, and described fluid passage one end is connected with water shoot, the other end is connected with inlet pipe, and described inlet pipe is connected with high-pressure air source.After filter cloth uses for some time, mud granule is easily distributed on filter cloth, blocking mesh, cause dewatering efficiency to reduce, adopt inlet pipe high-pressure air source to be connected with base plate and filter cloth, after using certain hour, open source of the gas and opening-closing valve, the mud that filter cloth blocks is rinsed well by high pressure gas, and does not need with water cleaning, and cleaning filter cloth is very convenient.
As preferably, offer opening for feed and discharge port respectively up and down at cylindrical shell, described opening for feed place is provided with charging flashboard, and described discharge outlet is provided with discharging flashboard, input and output material flashboard promotes air cylinder driven by flashboard, and described flashboard promotes cylinder and input and output material flashboard one_to_one corresponding.Mud enters press filtration chamber through storage bin from opening for feed, and during press filtration, input and output material flashboard all cuts out, and after press filtration terminates, opens input and output material flashboard, is released by the mud after process from discharge port.
As preferably, the inner bottom surface of described feed inlet and outlet and the inner bottom surface in press filtration chamber contour, and corresponding flashboard slot is offered on the inner bottom surface of feed inlet and outlet, be provided with spring in described flashboard slot and fill out cover plate, described fills out the upper end that cover plate is fixedly installed on spring.Adopt this structure to be can realize flashboard to be inserted into flashboard slot, meanwhile, fill out cover plate and can be closed by flashboard slot under the action of the spring again when flashboard is opened, preventing mud from entering in flashboard slot affects next time working of flashboard.
As preferably, described stripper plate is provided with mud layer dredging structure, described mud layer dredging structure extends inwardly in press filtration chamber.After mud is extruded, its void ratio diminishes, and easily the circulation of blocking water, causes moisture not easily to discharge, and especially under high pressure press filtration, the space blocking of mud is even more serious, adopts mud layer dredging structure to form the runner of water at sludge blanket, is easy to water and discharges.
As preferably, described mud layer dredging structure is hollow needle structure, offers multiple through hole thereon, and is covered with one deck filter cloth on the surface of mud layer dredging structure.The blocking of mud layer dredging structure can be prevented like this.
As preferably, the barrel wall at the described stripper plate place of movement is cylindrical structural, be provided with local reducer on cylinder inboard wall top, the inner-diameter portion whose of local reducer is greater than the internal diameter of cylindrical tube body wall, and is provided with the rotary cylinder driving stripper plate to rotate in this part of local reducer.This local reducer another part diameter in a circumferential direction increases, and on the asymmetric line that rotary cylinder is arranged on cylindrical shell, namely decentering line has the eccentricity of a section, with provide drive stripper plate rotate needed for moment.
As preferably, described deep dehydrator also comprises first location sensor and second position sensor, described first location sensor is arranged on second largest gear side, to detect the position of rotation of second largest gear, described second position sensor is arranged on reducer place, local, to detect the position of stripper plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of catamaran type sewage sludge deep dehydrator;
As shown in the figure, 1, cylindrical shell, 2, storage bin, 3, stripper plate, 4, base plate, 5, press filtration chamber, 6, draw back plate, 7-1, first toggle link, 7-2, second toggle link, 8, oil motor, 9, first gear, 10, second largest gear, 11, pinion(gear), 12, aperture, 13, flow channel for liquids, 14, filter cloth, 15, water shoot, 16, inlet pipe, 17, high-pressure air source, 18, opening for feed, 18-1, charging flashboard, 19, discharge port, 19-1, discharging flashboard, 20, flashboard promotes cylinder, 21, flashboard slot, 21-1, spring, 21-2, fill out cover plate, 22, mud layer dredging structure, 23, helix transporting device, 23-1, first transportation section, 23-2, second transportation section, 23-3, hopper, 24, local reducer, 25, rotary cylinder, 26, first location sensor, 27, second position sensor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
The present invention contain any make on marrow of the present invention and scope substitute, amendment, equivalent method and scheme.To have the present invention to make the public and understand thoroughly, in the following preferred embodiment of the present invention, describe concrete details in detail, and do not have the description of these details also can understand the present invention completely for a person skilled in the art.In addition, the needs in order to illustrate in the accompanying drawing of the present invention, completely accurately do not draw according to substantial proportion, are explained at this.
As shown in Figure 1, a kind of dewatering based on catamaran type sewage sludge deep dehydrator of the present invention, described catamaran type sewage sludge deep dehydrator comprises two sub-devices of deep dehydration and extruding transmission system, the sub-device symmetry of two described deep dehydrations is divided into the both sides of extruding transmission system, the sub-device of each deep dehydration includes cylindrical shell 1, storage bin 2, the base plate 4 being arranged on the stripper plate 3 in cylindrical shell 1 and being arranged on bottom cylindrical shell 1, press filtration chamber 5 is formed between described stripper plate 3 and base plate 4, described storage bin 2 to be positioned at above press filtration chamber 5 and coupled logical, described base plate 4 is provided with the drainage mechanism that in voltage supply filter chamber 5, moisture is discharged, described extruding transmission system comprises power drive mechanism, draw back plate 6, first toggle link 7-1 and the second toggle link 7-2, described power drive mechanism is connected with draw back plate 6 to drive draw back plate 6 to move, the first described toggle link 7-1 and one end of the second toggle link 7-2 are hinged on the both sides of draw back plate 6 respectively, and the other end of the first toggle link 7-1 and the second toggle link 7-2 is hinged on corresponding stripper plate 3 respectively,
Described deep dehydrator also comprises the helix transporting device 23 for feeding, described helix transporting device comprises the first transportation section 23-1 and the second transportation section 23-2, the rotary orientation of the first transportation section 23-1 and the second transportation section 23-2 is contrary, the discharge port of the two is corresponding with the storage bin 2 of two sub-devices of deep dehydration respectively, and the middle upper part of helix transporting device 23 is provided with hopper 23-3;
Described dewatering comprises the following steps:
1) mud after preliminary hydro-extraction, storage bin corresponding is with it sent into respectively by the first transportation section of helix transporting device and the second transportation section, open opening for feed, and be pushed in press filtration chamber by storage bin, keep feed inlet and outlet to be in closing condition and think that press filtration is prepared;
2) drive the first toggle link and the second toggle link by extruding transmission system, the first toggle link and the second toggle link exert a force respectively to the stripper plate of two sub-devices of deep dehydration, start to carry out press filtration to mud, are discharged by moisture by drainage mechanism in press filtration chamber;
3), after dehydration, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out.
Described actuating unit comprises oil motor 8, first gear 9, second largest gear 10 and pinion(gear) 11, described oil motor 8 is all connected by gear pair with pinion(gear) 11 with first gear 9, second largest gear 10, described pinion(gear) 11 is fixedly connected with first gear 9 is concentric, the end of described draw back plate 6 is articulated with the eccentric position of second largest gear, forms toggle.
For the design of draw back plate, can adopt set square structure, especially isoceles triangle plate, the first toggle link 7-1 and the second toggle link 7-2 is hinged respectively at two summits on isoceles triangle plate base, and another one summit is hinged on the eccentric position of second largest gear.Certainly, this is only a comparatively preferred example, is not limited to this example, such as, can also pass through other linkage assemblys.
Described drainage mechanism is included on base plate 4 and offers multiple aperture 12 logical for moisture flow and flow channel for liquids 13, base plate 4 upper surface is wrapped in filter cloth 14, described fluid passage 13 one end is connected with water shoot 15, the other end is connected with inlet pipe 16, and described inlet pipe 16 is connected with high-pressure air source 17.After filter cloth uses for some time, mud granule is easily distributed on filter cloth, blocking mesh, cause dewatering efficiency to reduce, adopt inlet pipe high-pressure air source to be connected with base plate and filter cloth, after using certain hour, open source of the gas and opening-closing valve, the mud that filter cloth blocks is rinsed well by high pressure gas.
Opening for feed 18 and discharge port 19 is offered up and down respectively at cylindrical shell 1, described opening for feed 18 place is provided with charging flashboard 18-1, described discharge port 19 place is provided with discharging flashboard 19-1, input and output material flashboard promotes cylinder 20 by flashboard and drives, and described flashboard promotes cylinder 20 and input and output material flashboard one_to_one corresponding.Described input and output material flashboard lower end can arrange the sealing materials such as rubber.
The inner bottom surface of described feed inlet and outlet and the inner bottom surface in press filtration chamber 5 contour, and on the inner bottom surface of feed inlet and outlet, offer corresponding flashboard slot 21, be provided with spring 21-1 in described flashboard slot 21 and fill out cover plate 21-2, described fills out the upper end that cover plate 21-2 is fixedly installed on spring 21-1.
It should be noted that the terms such as " base plate ", " inner bottom surface " described in the present invention, all for the direction of stripper plate extruding, particularly in the drawings, the base plate of two sub-devices of deep dehydration with the position in scheming for left side and right side.
Described stripper plate 3 is provided with mud layer dredging structure 22, and described mud layer dredging structure 22 extends inwardly in press filtration chamber 5.The development length of mud layer dredging structure 22 is adjustable, such as, adopt adjustable diameter and screw adjusting.
Described mud layer dredging structure 22 is hollow needle structure, offers multiple through hole thereon, and is covered with one deck filter cloth on the surface of mud layer dredging structure.Mud layer dredging structure 22 is except adopting said structure, and can adopt pin, it offers groove, its end is pointed, and other parts are cylindric or rectangular-shaped.
The barrel wall at described stripper plate 3 place of movement is cylindrical structural, local reducer 24 is provided with in cylindrical shell 1 upper inside wall, the inner-diameter portion whose of local reducer 24 is greater than the internal diameter of cylindrical tube body wall, and is provided with the rotary cylinder 25 driving stripper plate 3 to rotate in this part of local reducer 24.This local reducer another part diameter in a circumferential direction increases, and on the asymmetric line that rotary cylinder is arranged on cylindrical shell, namely decentering line has the eccentricity of a section, with provide drive stripper plate rotate needed for moment.
Described deep dehydrator also comprises first location sensor 26 and second position sensor 27, described first location sensor 26 is arranged on second largest gear 10 side, to detect the position of rotation of second largest gear 10, described second position sensor 27 is arranged on reducer 24 place, local, to detect the position of stripper plate 3.
In step 2) after, along with the carrying out of compression, now the void ratio of mud is very little, and the passage of moisture circulation is by sludge blockage, and not easily cloth is discharged after filtration, under the reverse drive of extruding transmission system, stripper plate returns to the reducer place, local of cylindrical shell, and second position sensor detects stripper plate, and controller sends signal to stripper plate rotary cylinder, cylinder is to stripper plate moment of rotation, and stripper plate rotates an angle; Oil motor rotates forward again, drives stripper plate to carry out secondary extrusion, when stripper plate is pushed to limit position to the mud of press filtration again, now the scale effect of power is maximum, carry out pressurize, continued, until do not have moisture out the ultra-high voltage press filtration regular hour to mud.
For the cleaning of drainage mechanism, moisture is closed the valve on water shoot, is opened inlet pipe valve after discharging from liquid discharge pipe, connects high-pressure air source, rinses the mud granule of aperture clogs on filter cloth and bottom plate.
Specific works principle is as follows:
Entering into through the mud of preliminary hydro-extraction water ratio higher (about 80%) enters in spiral conveyer by hopper, under spiral conveyer conveying, two mud in left and right enter into equal equivalent in the discharging bin of two sub-devices of deep dehydration, after accumulation after a while, charging flashboard is opened by flashboard cylinder operation, and discharging flashboard cuts out, and mud enters into press filtration chamber under gravity, when the mud in storage bin all enters into behind press filtration chamber, charging flashboard cuts out.Oil motor is started working, oil motor rotates forward and drives first gear, pinion(gear), second largest gear, set square (one of draw back plate), toggle link (comprising the first toggle link and the second toggle link), power is sent on stripper plate, in the initial stage of compression, because the void ratio of mud is comparatively large, the power required for compression is also less, but compression speed is very fast, now the transmission system of power mainly plays the effect of crushing failure at high speed, and squeeze is less.Along with the carrying out of extruding, mud is more and more real by what compress, void ratio diminishes, now required force of compression is increasing, and compression displacement is more and more less, and set square and toggle link are in the amplification position of a power, the scale effect of power starts to manifest, only need the power that oil motor is certain, through large pinion(gear) two-stage engagement and set square, toggle link power multiple amplification under, form huge squeeze at stripper plate place and press filtration carried out to mud.When being compressed to rear half stage, now the void ratio of mud is very little, the passage of moisture circulation is by sludge blockage, not easily cloth is discharged after filtration, oil motor is reversed, at large pinion(gear), set square, under the driving of toggle link, stripper plate returns to the reducer place, local of cylindrical shell, second position sensor detects stripper plate, controller sends signal to stripper plate rotary cylinder, cylinder is to stripper plate moment of rotation, after stripper plate rotates an angle, oil motor rotates forward, again stripper plate is driven to carry out secondary extrusion to the mud of press filtration again, now, " duck eye " that pin during first time extruding is formed is supplied to water of compaction circulation passage, water of compaction easily passes through this passage through filter cloth, aperture enters flow channel for liquids, this stage is the packing stage of power, now right toggle link, set square, under state that left toggle link is in " stretching ", the scale effect of squeeze transmission system power is maximum, pressure suffered by mud is also maximum, carry out pressurize certain hour, moisture in mud is constantly extruded, until do not have moisture to extrude, press filtration stops.Discharging flashboard is opened, and mud discharges press filtration chamber under gravity.The moisture be press-filtered out enters into fluid passage by the aperture on filter cloth, fixed base plate, and under check valve effect, this liquid can only from the unidirectional discharge of liquid discharge pipe.After running after a while, as the mesh of mud granule by filter cloth or the aperture clogs of retaining plate, the opening-closing valve now opening high-pressure air source and inlet pipe is opened, the opening-closing valve at water shoot place is closed, and the mud granule blocked on filter cloth and on bottom plate aperture is rinsed well by high pressure gas.
Below only just preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims.The present invention is not only confined to above embodiment, and its concrete structure allows to change.In a word, all various changes done in the protection domain of independent claim of the present invention are all in protection scope of the present invention.
Claims (9)
1. the dewatering based on catamaran type sewage sludge deep dehydrator, described catamaran type sewage sludge deep dehydrator comprises two sub-devices of deep dehydration and extruding transmission system, it is characterized in that: the sub-device symmetry of two described deep dehydrations is divided into the both sides of extruding transmission system, the sub-device of each deep dehydration includes cylindrical shell (1), storage bin (2), be arranged on the stripper plate (3) in cylindrical shell (1) and be arranged on the base plate (4) bottom cylindrical shell (1), press filtration chamber (5) is formed between described stripper plate (3) and base plate (4), described storage bin (2) is positioned at top, press filtration chamber (5) and coupled logical, described base plate (4) is provided with the drainage mechanism that the interior moisture of voltage supply filter chamber (5) is discharged, described extruding transmission system comprises power drive mechanism, draw back plate (6), the first toggle link (7-1) and the second toggle link (7-2), described power drive mechanism is connected to drive draw back plate (6) to move with draw back plate (6), described the first toggle link (7-1) and one end of the second toggle link (7-2) are hinged on the both sides of draw back plate (6) respectively, and the other end of the first toggle link (7-1) and the second toggle link (7-2) is hinged on corresponding stripper plate (3) respectively,
Described deep dehydrator also comprises the helix transporting device (23) for feeding, described helix transporting device comprises the first transportation section (23-1) and the second transportation section (23-2), the rotary orientation of the first transportation section (23-1) and the second transportation section (23-2) is contrary, the discharge port of the two is corresponding with the storage bin (2) of two sub-devices of deep dehydration respectively, and the middle upper part of helix transporting device (23) is provided with hopper (23-3);
Described dewatering comprises the following steps:
1) mud after preliminary hydro-extraction, storage bin corresponding is with it sent into respectively by the first transportation section of helix transporting device and the second transportation section, open opening for feed, and be pushed in press filtration chamber by storage bin, keep feed inlet and outlet to be in closing condition and think that press filtration is prepared;
2) drive the first toggle link and the second toggle link by extruding transmission system, the first toggle link and the second toggle link exert a force respectively to the stripper plate of two sub-devices of deep dehydration, start to carry out press filtration to mud, are discharged by moisture by drainage mechanism in press filtration chamber;
3), after dehydration, open feed inlet and outlet, the mud cake in press filtration chamber is pushed out.
2. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 1, it is characterized in that: described drainage mechanism is included on base plate (4) and offers multiple aperture (12) logical for moisture flow and flow channel for liquids (13), base plate (4) upper surface is wrapped in filter cloth (14), described fluid passage (13) one end is connected with water shoot (15), the other end is connected with inlet pipe (16), and described inlet pipe (16) is connected with high-pressure air source (17).
3. the dewatering based on sewage sludge secondary deep dewatering device according to claim 2, it is characterized in that: described actuating unit comprises oil motor (8), first gear (9), second largest gear (10) and pinion(gear) (11), described oil motor (8) and first gear (9), second largest gear (10) is all connected by gear pair with pinion(gear) (11), described pinion(gear) (11) is fixedly connected with first gear (9) is concentric, the end of described draw back plate (6) is articulated with the eccentric position of second largest gear, form toggle.
4. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 1, it is characterized in that: offer opening for feed (18) and discharge port (19) up and down respectively at cylindrical shell (1), described opening for feed (18) place is provided with charging flashboard (18-1), described discharge port (19) place is provided with discharging flashboard (19-1), input and output material flashboard promotes cylinder (20) by flashboard and drives, and described flashboard promotes cylinder (20) and input and output material flashboard one_to_one corresponding.
5. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 4, it is characterized in that: the inner bottom surface of described feed inlet and outlet and the inner bottom surface of press filtration chamber (5) contour, and on the inner bottom surface of feed inlet and outlet, offer corresponding flashboard slot (21), be provided with spring (21-1) in described flashboard slot (21) and fill out cover plate (21-2), described fills out the upper end that cover plate (21-2) is fixedly installed on spring (21-1).
6. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 2, it is characterized in that: described stripper plate (3) is provided with mud layer dredging structure (22), described mud layer dredging structure (22) extends inwardly in press filtration chamber (5).
7. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 6, it is characterized in that: described mud layer dredging structure (22) is hollow needle structure, offer multiple through hole thereon, and be covered with one deck filter cloth on the surface of mud layer dredging structure.
8. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 2, it is characterized in that: the barrel wall at the mobile place of described stripper plate (3) is cylindrical structural, local reducer (24) is provided with in cylindrical shell (1) upper inside wall, the inner-diameter portion whose of local reducer (24) is greater than the internal diameter of cylindrical tube body wall, and is provided with the rotary cylinder (25) driving stripper plate (3) to rotate in this part of local reducer (24).
9. the dewatering based on catamaran type sewage sludge deep dehydrator according to claim 8, it is characterized in that: described deep dehydrator also comprises first location sensor (26) and second position sensor (27), described first location sensor (26) is arranged on second largest gear (10) side, to detect the position of rotation of second largest gear (10), described second position sensor (27) is arranged on reducer (24) place, local, to detect the position of stripper plate (3).
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| CN108721984A (en) * | 2018-08-16 | 2018-11-02 | 黄文化 | A kind of vertical suspention dehydration device |
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