Background technology
In recent ten years, along with the expansion of material dewatering technical applications, " dehydration ", especially " filtration " are almost present in each industrial circle and environmental protection process.As: industrial wastewater, municipal wastewater, the dehydration of mine coal slime dewatering and drilling sludge etc.
Separate mode is generally divided into three kinds, both gravity filtration, pressure filtration, centrifugation.Gravity filtration floor space is large, the cycle is long, efficiency is low.Pressure filtration mainly contains plate and frame filter press, vane filter, belt filter press, generally all bulky, inconvenient operation, automaticity are low, the typical equipment of centrifugation is centrifuge, it is high that it has the processing request of manufacture, the shortcoming that consumed power is large, cost is high, has affected being widely used of it.Equipment component, in the time separating, separates after material need to being flocculated again, causes system huge, complicated operation, and the use of flocculant needs professional to instruct, and needs mobile operating industry extremely inconvenient to part.Comparatively speaking, separation has the advantages such as simple in structure, easy to use, cost is low.But current existing separation device design is coarse, and the poor continuity of mask work, cannot continue to carry out detached job.
Utility model content
The purpose of this utility model is the defect that overcomes existing equipment work poor continuity, provides a kind of pressurization continuous Separation of Solid and Liquid purifier, changes existing Artificial Control mode into automatic control mode simultaneously, improves work continuity, the reliability of equipment.
Described technical scheme is as follows:
The continuous Separation of Solid and Liquid purifier of a kind of pressurization of the present utility model, comprises propelling worm, cartridge filter and back purge system; Described propelling worm comprises the cone section of straight section and the conical structure of column structure, and the outer setting of described propelling worm has helical blade; There is the cartridge filter of tubular in described propelling worm outer setting; Described propelling worm and described cartridge filter form filter chamber; The front end of described propelling worm is provided with reducing motor, can drive described propelling worm to rotate in described cartridge filter; Described cartridge filter one end is provided with stock inlet; The cone section end of described propelling worm is provided with from slag-draining device; Described back purge system is set in described cartridge filter outside; Described cartridge filter and described back purge system form backwash chamber; Described back purge system one end is provided with backwash mouth; The other end is provided with liquid outlet.
The continuous Separation of Solid and Liquid purifier of pressurization of the present utility model, is also provided with backwash automaton, and described backwash automaton is made up of pressure sensitive device and backwash controller; Described pressure sensitive device comprises and is arranged at entering to starch pressure sensitive interface and being arranged at the cavity pressure induction interface of described back purge system inwall of described stock inlet; Describedly enter to starch pressure sensitive interface and be connected with described backwash controller respectively with described cavity pressure induction interface.
The continuous Separation of Solid and Liquid purifier of pressurization of the present utility model, the screen pack that the barrel of described cartridge filter is made up of filter medium forms.
The continuous Separation of Solid and Liquid purifier of pressurization of the present utility model, the straight section front end of described dress propelling worm is provided with torque controlling device, and described torque controlling device is connected from slag-draining device with described, for controlling the described operation from slag-draining device.
The continuous Separation of Solid and Liquid purifier of pressurization of the present utility model, described filter medium is powder metallurgy or micropore ceramics or industrial filter cloth or sintered meshwork.
The technical scheme that the utility model provides there is following beneficial effect:
When the utility model work, adopt the rotation of inner propelling worm can realize the continuous pressure filtration to slurry, the motion of propelling worm simultaneously makes cartridge filter inwall keep without solid trapped substance or only adhere to skim mud cake at cartridge filter inwall, filter is in all the time under dynamic thin-layer filter type in filtration work, reduce filtration pressure difference, improved filter efficiency.
Simultaneously, in this device, be provided with automatic back-flushing device in cartridge filter outside, when filter medium is blocked cause filter efficiency reduce time, or filter cake is compacted while causing filter pressure once large, automatic anti-cleaning device can start, and by high pressure backwashing water or pressure-air recoil, filter medium can obtain regeneration and recover, continuous filtration be can realize, and then inflow-rate of water turbine filter and filter efficiency improved.
In addition, the utility model also has feature applied widely, can be widely used in Separation of Solid and Liquid and the dehydration of the industries such as chemical industry, oil, pharmacy, papermaking, food, environmental protection.
Detailed description of the invention
In order to understand the utility model in depth, below in conjunction with accompanying drawing, the utility model is elaborated.
Below in conjunction with specific embodiment, the utility model is further described.
The continuous Separation of Solid and Liquid purifier of pressurization that the utility model discloses, comprises by coaxial propelling worm 7, cartridge filter 6 and back purge system 5 constitution equipment agent structures.
Propelling worm 7, at agent structure penetralia, for alleviating the weight of propelling worm, can be set to cavity body structure.Propelling worm 7 is divided into the straight section of column structure and the cone section of anterior conical structure at rear portion.The outer setting of propelling worm 7 has helical blade, and in the time that propelling worm 7 rotates, helical blade can be realized the promotion campaign of rear portion straight section to front portion cone section.
Propelling worm 7 straight section outer cover are equipped with cartridge filter 6, and the screen pack that the barrel of cartridge filter 6 is made up of filter medium forms.According to different filtration requirements, filter Jie's net and can adopt various filter mediums, as powder metallurgy, micropore ceramics, industrial filter cloth, sintered meshwork etc., can reach better effect.
Between propelling worm 7 and cartridge filter 6, have very little gap, back purge system 5 is equipped with in cartridge filter 6 outsides, and cartridge filter 6 forms backwash chamber with back purge system 5.Outside one end of back purge system 5 is provided with backwash mouth 8; The relative other end is provided with liquid outlet 15.The anterior cone section of propelling worm 7 is the pyramidal structure of certain angle, at the end of pyramidal structure, cone section end cap 9 is set, and cone section end cap 9 is fixed on back purge system 5.
The cone section end of propelling worm is provided with from slag-draining device 10, and automatic slag discharge device 10 communicates with propelling worm 7.On the cartridge filter 6 at the rear portion of propelling worm 7, be provided with stock inlet 3.Propelling worm 7 tail end driving shafts are equipped with reducing motor 1, and reducing motor 1 is fixed on cartridge filter 6 by torque controlling device 2.Reducing motor 1 can drive propelling worm 7 in the interior rotation of cartridge filter 6.
The cylindrical body structure that propelling worm 7, filter cylinder 6 and back purge system 5 form is fixed in frame 11, and frame 11 plays the equipment effect that is fixedly connected with.Filtrate tank 12 is also equipped with in the inherent agent structure of frame 11 bottom, and filtrate tank 12 plays and stores filtrate effect, and the liquid flowing out from liquid outlet 15 enters in filtrate tank 12 by the control of magnetic valve 14.The bottom of filtrate tank 12 is provided with leakage fluid dram 13.
In addition the continuous Separation of Solid and Liquid purifier of pressurization of the present utility model is also provided with backwash automaton.Backwash automaton is made up of pressure sensitive device and backwash controller 4.Pressure sensitive device comprises and is arranged at entering to starch pressure sensitive interface and being arranged at the cavity pressure induction interface of back purge system 5 inwalls of stock inlet 3.Entering to starch pressure sensitive interface is connected with backwash controller 4 respectively with cavity pressure induction interface.
This device specific works process is: in the time of system place and normal filtration state, automatic slag discharge device 10, backwash mouth 8 are closed condition, system normal filtration.The slurry of now separation to be filtered injects stock inlet 3 by outside slag stock pump pressurization, slurries are full of in the filtration cavity that propelling worm 7 and cartridge filter 6 form, increase gradually along with filtering cavity internal pressure, filtered fluid filter medium by cartridge filter 6 under differential pressure action is discharged, flow in the peripheral backwash chamber being formed by cartridge filter 6 and back purge system 5, then be pooled in filtrate tank 12 by liquid outlet 15.
The filter medium that solid matter in slurry is filtered cylinder 6 is trapped in filter medium surface, and filter process constantly carries out, and the solid matter that is trapped in filter medium inner surface constantly increases thickening, forms filter cake.Propelling worm 7 rotates under the driving of reducing motor 1, the filter cake on cartridge filter surface is scraped, and under the rotary action of propelling worm 7, be constantly pushed to front end, in pushing course, propelling worm 7 applies larger squeeze force to being attached to the filter cake of filter medium inner surface, the further dehydrated exsiccation of filter cake.Under the effect of propelling worm 7, filter medium surface cannot form filter cake or only have skim filter cake.Like this, under system of the present utility model place and normal filtration state, the inwall of cartridge filter can not accumulate filter cake or just accumulate the filter cake of thin layer, makes pressure filtration process be in dynamic thin-layer filtration condition, has reduced filter pressure, has improved filter efficiency.
Slurry filter-cake after dehydration is gathered in automatic slag discharge device 10 places, and under the control of torque controlling device 2, automatic slag discharge device 10 is opened, and the filter cake after dehydration is discharged from, and completes Separation of Solid and Liquid process.
Along with separation process is constantly carried out, the thin layer filter cake of cartridge filter 6 inner surfaces is by constantly compacting, and cartridge filter 6 filter mediums own also can be blocked, and filtration pressure difference also increases thereupon, causes filter efficiency to reduce.In the case, the flow of filtrate flowing in backwash chamber reduces, pressure decreased, in the time that the cavity pressure induction interface pressure differential of entering to starch pressure sensitive interface and being arranged at back purge system 5 inwalls at stock inlet 3 places reaches setting value, backwash controller 4 can start back-flushing filtering device, liquid outlet 15 is closed, open backwash mouth 8 simultaneously, the pressure-air that the high pressure backwashing water being provided by outside water pump or outside air compressor machine provide passes in backwash chamber, by cartridge filter outer surface flushing-back filtering medium, dispose the impurity of blocking filtering medium and surperficial filter cake, filter medium obtains regeneration and recovers, system is recovered original service behaviour, native system is proceeded isolation of purified operation.The back flushing process duration is very short, within very short time, just can complete, and without impact, makes filter process continuously, efficiently on the continuous mask work of system.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.