CN106865925A - Dehydration device with spiral filtration face - Google Patents
Dehydration device with spiral filtration face Download PDFInfo
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- CN106865925A CN106865925A CN201710110717.5A CN201710110717A CN106865925A CN 106865925 A CN106865925 A CN 106865925A CN 201710110717 A CN201710110717 A CN 201710110717A CN 106865925 A CN106865925 A CN 106865925A
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- spiral filtration
- filtration face
- spiral
- face
- housing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filtering Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of dehydration device with spiral filtration face, rotating shaft including housing and in housing, the housing is provided with sludge inlet and drier outlet, the rotating shaft includes first body of rod with delivery port, flow-guiding channel is provided with inside first body of rod, first body of rod bar wall is provided with the pod apertures of bar wall；The outer wall of first body of rod is provided with spiral filtration face, volume between the spiral filtration face and housing is gradually reduced along the delivery port direction of the rotating shaft, dehydrated raw material flows through pod apertures, flow-guiding channel successively through the liquid obtained by the contracting of spiral filtration face pressure and filtering, last to be discharged from delivery port, dehydrated raw material is discharged through the siccative obtained by the contracting of spiral filtration face pressure and retention from drier outlet.Spiral filtration face significantly extends the contact area of dehydrated raw material and spiral filtration face, so as to be obviously improved dewatering efficiency in the spiral distribution extended along rotating shaft.
Description
Technical field
The present invention relates to sludge dewatering technical field, in particular to the dehydration device with spiral filtration face.
Background technology
Existing sludge dewatering technology mainly has following three kinds：1) Thermal dehydration：Dried using thermals source such as heat smoke, vapours
Roasting sludge, makes moisture evaporation in sludge, reduces sludge moisture content.Sludge moisture content drops to less than 30%, profit after Thermal dehydration
In later use and disposal, but investment and operating cost are very high, and energy utilization rate is low.2) mechanical dehydration (plate and frame sludge dewatering
Machine, belt mud dewatering equipment, centrifugal sludge dewatering machine, Die Shi sludge dewatering equipments, spiral pressing dehydrator etc.)：It is former using extruding
Reason forces the moisture in extrusion sludge.The investment of mechanical dehydration is small, and device is simple to operation, but can not remove and combine water, through passing
The moisture percentage in sewage sludge of system mechanical dehydration method treatment still has 80% or so, it is impossible to meet the requirement of later use and landfill；3) change
Learn conditioning+diaphragm plate frame：A large amount of quick limes, molysite are first added, additive quality accounts for more than the 20% of sludge butt gross mass,
It is subsequently adding, flocculated colloid, albumen etc. carry out mechanical dehydration subsequently into diaphragm plate frame.Required device simple, can contain sludge
Water rate is controlled 60% or so；But because additive amount accounts for sludge butt more than 20%, anti-increasing does not drop in sludge quantity, after increased
Continuous device treatment load and cost of transportation, reduce the calorific value of sludge, are unfavorable for the processing methods such as incineration.
Mechanical dehydration is conventional dewatering, wherein, spiral pressing dehydrator is a kind of conventional mechanical dehydration device,
The rotating shaft of spiral pressing dehydrator and helical blade are arranged in the cylinder being made up of filter screen, from the entrance of dehydrated raw material to outlet
Volume between direction helical blade and cylinder inner wall is tapered into so that sludge is also gradually compressed.Sludge is made by compression
In solid and liquid separate, liquid is by after the mesh of filter screen, dewaterer being flowed to through the flow-guiding channel between housing and cylinder
The liquid collection trough heel row of lower section is to machine exterior.
Because the specific surface area of inner walls is limited, thus filter cylinder ratio of the filter area maximum again smaller than inner walls
A big chunk moisture in surface area, therefore sludge is difficult to be contacted with filter cylinder, and the time of contact is very of short duration, therefore gained
The water content of dry mud is higher, and dewatering efficiency is poor.
The content of the invention
It is existing to solve it is a primary object of the present invention to provide a kind of spiral filtration face-electro-osmosis composite dewatering device
The low problem of dewatering efficiency that dehydration device in technology is present.
To achieve these goals, the invention provides a kind of dehydration device with spiral filtration face, including housing and
Rotating shaft in housing, the housing is provided with sludge inlet and drier outlet, and the rotating shaft includes with delivery port the
One body of rod, is provided with flow-guiding channel inside first body of rod, first body of rod bar wall is provided with the pod apertures of bar wall；Institute
The outer wall for stating first body of rod is provided with spiral filtration face, volume the going out along the rotating shaft between the spiral filtration face and housing
Mouth of a river direction is gradually reduced, and dehydrated raw material flows through pod apertures, water conservancy diversion successively through the liquid obtained by the contracting of spiral filtration face pressure and filtering
Passage, is finally discharged from delivery port, and dehydrated raw material is discharged through the siccative obtained by the contracting of spiral filtration face pressure and retention from drier outlet.
Used as the further improvement of the above-mentioned dehydration device with spiral filtration face, the spiral filtration face includes relative setting
The first filtering surface put and the second filtering surface and the cavity being formed between the first filtering surface and the second filtering surface, the cavity with
The pod apertures conducting, dehydrated raw material flows through cavity, pod apertures, leads successively through the liquid obtained by the contracting of spiral filtration face pressure and filtering
Circulation road, finally discharges from delivery port.
Used as the further improvement of the above-mentioned dehydration device with spiral filtration face, the rotating shaft also includes second body of rod,
The outer wall of second body of rod is provided with the first helical blade.
As the further improvement of the above-mentioned dehydration device with spiral filtration face, the first helical-blade of the enclosure interior
The rotation space of piece is in cylinder；The pitch of first helical blade is more than the pitch in the spiral filtration face and/or described
External diameter of the external diameter of the first helical blade more than the spiral filtration face.
As the further improvement of the above-mentioned dehydration device with spiral filtration face, also including electricity applying system；The power-up
System includes anode connector, positive plate and positive terminal, and the anode connector is connected with rotating shaft, and the positive plate is located in housing
Wall, the positive terminal is connected and through housing with positive plate.
As the further improvement of the above-mentioned dehydration device with spiral filtration face, the positive plate and spiral filtration face phase
The mating surface of cooperation is provided with insulating barrier；The distance between the external diameter and insulating barrier in the spiral filtration face are 8-12mm.
Used as the further improvement of the above-mentioned dehydration device with spiral filtration face, the inner surface in the spiral filtration face sets
There is support flow-guiding screen.
Used as the further improvement of the above-mentioned dehydration device with spiral filtration face, first body of rod is provided with helical form
Projection, the raised side be connected with the support flow-guiding screen, and the opposite side of the projection connects with the spiral filtration face
Connect.
As the further improvement of the above-mentioned dehydration device with spiral filtration face, the spiral filtration face of the enclosure interior
Rotation space be taper；And/or the pitch in the spiral filtration face is gradually reduced along the delivery port direction of the rotating shaft.
Used as the further improvement of the above-mentioned dehydration device with spiral filtration face, the spiral filtration face is using between metal
Compound porous film；The average pore size of the intermetallic compound porous film is 0.1-1 μm, and thickness is 0.3-0.5mm.
As the further improvement of the above-mentioned dehydration device with spiral filtration face, moisture content≤60% of the siccative；
Turbidity≤the 1Ntu of the liquid.
Dehydration device with spiral filtration face of the invention has spiral filtration face, i.e. filtering surface in along rotating shaft extension
Spiral distribution, can not only be compressed to dehydrated raw material, and with multiple spiral helicine filter elements, therefore filtering surface
Product is dramatically increased, while dehydrated raw material can be in contact with each helical layer filter element in spiral filtration face step by step, is significantly prolonged
Dehydrated raw material long and the contact area in spiral filtration face, so as to be obviously improved dewatering efficiency.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or by practice of the invention
Solve.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, specific implementation of the invention
Mode, schematic description and description do not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the dehydration device with spiral filtration face of embodiment 1-2.
Fig. 2 is a kind of partial sectional view at A in Fig. 1.
Fig. 3 is another partial sectional view at A in Fig. 1.
Fig. 4 is the schematic diagram of the dehydration device with spiral filtration face of embodiment 3-4.
Fig. 5 is the partial sectional view at B in Fig. 4.
Specific embodiment
It should be noted that in the case where not conflicting, specific embodiment, embodiment in the application and therein
Feature can be mutually combined.Let us now refer to the figures and combine herein below and describe the present invention in detail.
In order that those skilled in the art are better understood from the present invention program, below in conjunction with specific embodiment party of the present invention
Accompanying drawing in formula, embodiment, clear, complete description is carried out to the technical scheme in the specific embodiment of the invention, embodiment,
Obviously, described embodiment is only the embodiment of a part of the invention, rather than whole embodiments.Based in the present invention
Specific embodiment, embodiment, what those of ordinary skill in the art were obtained on the premise of creative work is not made
Every other implementation method, embodiment, should all belong to the scope of protection of the invention.
In a kind of typical implementation method of the invention, the dehydration device with spiral filtration face, including housing 1 and position
In the rotating shaft 2 in housing 1, the housing 1 is provided with dehydrated raw material entrance 11 and drier outlet 12, and the rotating shaft 2 includes having
First body of rod 21 of delivery port 20, is provided with flow-guiding channel 210 inside first body of rod 21, set on the bar wall of first body of rod 21
There are the pod apertures 211 of bar wall；The outer wall of first body of rod 21 is provided with spiral filtration face 3, the spiral filtration face 3 and shell
Volume between body 1 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2, dehydrated raw material through spiral filtration face 3 compression and
Liquid obtained by filtering flows through pod apertures 211, flow-guiding channel 210 successively, is finally discharged from delivery port 20, and dehydrated raw material is through spiral
Filtering surface 3 is compressed and the siccative obtained by retaining is discharged from drier outlet 12.
In above-mentioned dehydration device, the filter area in spiral filtration face 3 is far above the circle being made up of filter screen of the prior art
The filter area of cylinder, while the filter element that dehydrated raw material can be step by step with each helical layer shape in spiral filtration face 3 is in contact,
Significantly extension dehydrated raw material and the contact area in spiral filtration face 3, realize being compressed and being filtered simultaneously, so as to be obviously improved dehydration
Efficiency.
In order to realize technical scheme, make the volume between the spiral filtration face 3 and housing 1 along the rotating shaft
2 direction of delivery port 20 is gradually reduced, and can use but be not limited to following structures：Spiral filtration face 3 in the housing 1
Rotation space be taper, while making the pitch in the spiral filtration face 3 gradually subtract along the direction of delivery port 20 of the rotating shaft 2
It is small, so that dehydrated raw material is compressed and filtered simultaneously, it is obviously improved dewatering efficiency.
Preferably, the inner surface in the spiral filtration face 3 is provided with support flow-guiding screen 4.The support flow-guiding screen 4 is preferably to be had
The wire netting of loose structure, one can carry out water conservancy diversion to liquid, and two can be supported to spiral filtration face 3, protect it
Keep steady fixed shape, so that the flow channel volume of liquid keeps stabilization, the flow resistance of liquid is reduced, so that dehydrated
Journey keeps stabilization and high efficiency.It is further preferred that first body of rod 21 is provided with spiral helicine raised 212, the projection
212 side is connected with the support flow-guiding screen 4, and raised 212 opposite side is connected with the spiral filtration face 3.Pass through
Raised 212 are set, first body of rod 21 and support flow-guiding screen 4 and the connection area in spiral filtration face 3 can be increased, make the strong of structure
Du Genggao.
Preferably, the spiral filtration face 3 uses intermetallic compound porous film；The intermetallic compound porous film
Average pore size is 0.1-1 μm, and thickness is 0.3-0.5mm.The intermetallic compound porous film has excellent decay resistance, and
And the feature with metal, can weld and can be very suitable for as spiral filtration face 3 of the invention as electrode with rotating shaft 2
Filter medium.
It is of the invention preferred embodiment in, the spiral filtration face 3 includes the first filtering surface 31 for being oppositely arranged
And second filtering surface 32 and the cavity that is formed between the first filtering surface 31 and the second filtering surface 32, the cavity and the water conservancy diversion
Hole 211 turns on, and dehydrated raw material is compressed through spiral filtration face 3 and the liquid obtained by filtering flows through cavity, pod apertures 211, leads successively
Circulation road 210, finally discharges from delivery port 20.The spiral filtration face 3 includes upper and lower two filtering surfaces, therefore can further be lifted
The filter area in spiral filtration face 3, lifts dewatering efficiency.
Preferably, the support flow-guiding screen 4 is located at the opposite inner side of the filtering surface 32 of first filtering surface 31 and second, with
Reach best support effect and water conservancy diversion effect.
Preferably, the filtering surface 32 of first filtering surface 31 and second uses intermetallic compound porous film；Described
The average pore size of one filtering surface 31 and the second filtering surface 32 is 0.1-1 μm, and thickness is 0.3-0.5mm.The intermetallic compound is more
Pore membrane has excellent decay resistance, and the feature with metal, can be welded with rotating shaft 2 and can very be fitted as electrode
Together in the filter medium as spiral filtration face 3 of the invention.
It is of the invention preferred embodiment in, the rotating shaft 2 also include second body of rod 22, second body of rod 22
Outer wall is provided with the first helical blade 51.First helical blade 51 of second body of rod 22 using non-porous steel plate can, second
The body of rod 22 uses the solid or hollow body of rod, and its effect is to realize the precommpression to dehydrated raw material, lifts first body of rod 21
The filter efficiency and compression efficiency in upper spiral filtration face 3.
Preferably, the rotation space of the first helical blade 51 inside the housing 1 is in cylinder, first helical-blade
The pitch of piece 51 is more than the spiral more than the pitch in the spiral filtration face 3 and/or the external diameter of first helical blade 51
The external diameter of filtering surface 3, is easy to reduce precompressed energy consumption.
It is of the invention preferred embodiment in, also including electricity applying system；The electricity applying system include anode connector 61,
Positive plate 62 and positive terminal 63, the anode connector 61 are connected with rotating shaft 2, and the positive plate 62 is located at the inwall of housing 1, described
Positive terminal 63 is connected and through housing 1 with positive plate 62.
Solid phase in dehydrated raw material all carries slight negative electrical charge for water, but solid phase and surrounding medium solution are used as one
Individual entirety is electroneutral, and in order to balance these negative electrical charges, solid phase surface must carry opposite charges in adsorbing medium solution
Cation.Counter ion in the surrounding medium that the negative electrical charge of solid phase surface is adsorbed with it constitutes electric double layer, under electric field action, Gu
The cation of phase surface absorption carries moisture and is moved to the spiral filtration face 3 of negative electrode.After reaching the surface of spiral filtration face 3, moisture
Spiral filtration face 3 is passed through under the collective effect of the compression stress in electric field force and spiral filtration face 3, sewage sludge solid is by spiral filtration face
3 are intercepted, and dewatering efficiency is further lifted with this.
Preferably, the mating surface that the positive plate 62 is engaged with spiral filtration face 3 is provided with insulating barrier 64；The spiral
The distance between external diameter and insulating barrier 64 of filtering surface 3 are 8-12mm；To reach good insulation effect, the stabilization of electric field is lifted
Property and security.
It should be noted that the above-mentioned compound porous film of metalwork can use Chinese invention patent CN104759629A institutes
The flexible, porous metal foil of announcement.
Beneficial effects of the present invention are further illustrated with reference to embodiment.
Embodiment 1
The dehydration device with spiral filtration face 3 as depicted in figs. 1 and 2, including housing 1 and turning in housing 1
Axle 2, the housing 1 is provided with dehydrated raw material entrance 11 and drier outlet 12, and the rotating shaft 2 includes with delivery port 20 first
The body of rod 21, is provided with flow-guiding channel 210 inside first body of rod 21, the bar wall of first body of rod 21 is provided with leading for bar wall
Discharge orifice 211；The outer wall of first body of rod 21 is provided with spiral filtration face 3, the volume between the spiral filtration face 3 and housing 1
It is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.
Also include support flow-guiding screen 4, first body of rod 21 is provided with spiral helicine raised 212 and second helical blade
52, the gap between the helical blade 52 of projection 212 and second turns on the pod apertures 211, and the one of the support flow-guiding screen 4
Side is welded with raised 212, and opposite side is welded with second helical blade 52；Led with the support raised 212 side
Drift net 4 is welded, and opposite side is welded with the spiral filtration face 3；The spiral filtration face 3 near first body of rod 21 side with
Raised 212 welding, opposite side and the second helical blade 52 are welded and formed positioned at the helical blade of spiral filtration face 3 and second
Cavity between 52.Second helical blade 52 is steel plate.The rotation space in the spiral filtration face 3 inside the housing 1 is
Taper, the pitch in the spiral filtration face 3 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The spiral filtration face 3
Using intermetallic compound porous film, the average pore size of the intermetallic compound porous film is 0.1 μm, and thickness is 0.3mm.
When using, rotating shaft 2 is rotated in given pace, be then passed through dehydration original toward housing 1 is interior from dehydrated raw material entrance 11
Material, dehydrated raw material through spiral filtration face 3 compression and filtering obtained by liquid flow through cavity, pod apertures 211, flow-guiding channel successively
210, finally discharged from delivery port 20；Wherein, the turbidity≤1Ntu of gained liquid, can direct reuse in landscape, water for irrigation.It is de-
Water raw material through spiral filtration face 3 compression and retention obtained by siccative discharged from the drier outlet 12 of the lower section of housing 1；Wherein, institute
The moisture content for obtaining siccative is maintained within 40-60%.
Embodiment 2
The dehydration device with spiral filtration face 3 as shown in figures 1 and 3, including housing 1 and turning in housing 1
Axle 2, the housing 1 is provided with dehydrated raw material entrance 11 and drier outlet 12, and the rotating shaft 2 includes with delivery port 20 first
The body of rod 21, is provided with flow-guiding channel 210 inside first body of rod 21, the bar wall of first body of rod 21 is provided with leading for bar wall
Discharge orifice 211；The outer wall of first body of rod 21 is provided with spiral filtration face 3, the volume between the spiral filtration face 3 and housing 1
It is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The spiral filtration face 3 includes the first filtering surface 31 being oppositely arranged
And second filtering surface 32 and the cavity that is formed between the first filtering surface 31 and the second filtering surface 32, the cavity and the water conservancy diversion
Hole 211 turns on.
Also include support flow-guiding screen 4, first body of rod 21 is provided with two spiral helicine raised 212, described two convex
The gap risen between 212 is turned on the pod apertures 211, and two opposite inner sides of projection 212 are welded with the support flow-guiding screen 4
Connect, outside is welded with the first filtering surface 31 and the second filtering surface 32 respectively.The filtering surface 32 of first filtering surface 31 and second
Near the side of first body of rod 21 and raised 212 welding, opposite side is welded to each other and is integrated and is formed positioned at the first filtering
Cavity between the filtering surface 32 of face 31 and second.The rotation space in the spiral filtration face 3 inside the housing 1 is taper, described
The pitch in spiral filtration face 3 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The mistake of first filtering surface 31 and second
Filtering surface 32 uses intermetallic compound porous film, and the average pore size of the intermetallic compound porous film is 0.5 μm, and thickness is
0.4mm。
When using, rotating shaft 2 is rotated in given pace, be then passed through dehydration original toward housing 1 is interior from dehydrated raw material entrance 11
Material, dehydrated raw material through spiral filtration face 3 compression and filtering obtained by liquid flow through cavity, pod apertures 211, flow-guiding channel successively
210, finally discharged from delivery port 20；Wherein, the turbidity≤1Ntu of gained liquid, can direct reuse in landscape, water for irrigation.It is de-
Water raw material through spiral filtration face 3 compression and retention obtained by siccative discharged from the drier outlet 12 of the lower section of housing 1；Wherein, institute
The moisture content for obtaining siccative is maintained within 40-60%.
Embodiment 3
The dehydration device with spiral filtration face 3 as shown in Figure 3 and Figure 4, including housing 1 and turning in housing 1
Axle 2, the housing 1 is provided with dehydrated raw material entrance 11 and drier outlet 12, and the rotating shaft 2 includes second body of rod 22 and has
First body of rod 21 at the mouth of a river 20；Second body of rod 22 is solid construction, and its outer wall is provided with the first helical blade 51, first spiral shell
Vane piece 51 is steel plate；The rotation space of the first helical blade 51 inside the housing 1 is in cylinder；First body of rod 21
Inside is provided with flow-guiding channel 210, and its bar wall is provided with the pod apertures 211 of bar wall, and its outer wall is provided with spiral filtration face 3,
Volume between the spiral filtration face 3 and housing 1 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The spiral
Filtering surface 3 includes the first filtering surface 31 being oppositely arranged and the second filtering surface 32 and is formed at the first filtering surface 31 and the second filtering
Cavity between face 32, the cavity is turned on the pod apertures 211.The pitch and external diameter of first helical blade 51 are big
In the pitch and external diameter in the spiral filtration face 3.
Also include support flow-guiding screen 4, first body of rod 21 is provided with two spiral helicine raised 212, described two convex
The gap risen between 212 is turned on the pod apertures 211, and two opposite inner sides of projection 212 are welded with the support flow-guiding screen 4
Connect, outside is welded with the first filtering surface 31 and the second filtering surface 32 respectively.The filtering surface 32 of first filtering surface 31 and second
Near the side of first body of rod 21 and raised 212 welding, opposite side is welded to each other and is integrated and is formed positioned at the first filtering
Cavity between the filtering surface 32 of face 31 and second.The rotation space in the spiral filtration face 3 inside the housing 1 is taper, described
The pitch in spiral filtration face 3 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The mistake of first filtering surface 31 and second
Filtering surface 32 uses intermetallic compound porous film, and the average pore size of the intermetallic compound porous film is 1 μm, and thickness is
0.5mm。
When using, rotating shaft 2 is rotated in given pace, be then passed through dehydration original toward housing 1 is interior from dehydrated raw material entrance 11
Material, dehydrated raw material first passes around the precommpression of the first helical blade 51, is then obtained after the compression and filtering in spiral filtration face 3 again
To liquid and siccative, wherein, the liquid flows through cavity, pod apertures 211, flow-guiding channel 210 successively, finally from the row of delivery port 20
Go out, the turbidity≤1Ntu of the liquid, can direct reuse in landscape, water for irrigation；The moisture content of gained siccative is maintained at 40-60%
Within.
Embodiment 4
The dehydration device with spiral filtration face 3 as in Figure 3-5, including housing 1 and the rotating shaft in housing 12,
The housing 1 is provided with dehydrated raw material entrance 11 and drier outlet 12, and the rotating shaft 2 includes second body of rod 22 and with delivery port
20 first body of rod 21；Second body of rod 22 is solid construction, and its outer wall is provided with the first helical blade 51, first helical-blade
Piece 51 is steel plate；The rotation space of the first helical blade 51 inside the housing 1 is in cylinder；Inside first body of rod 21
Flow-guiding channel 210 is provided with, its bar wall is provided with the pod apertures 211 of bar wall, and its outer wall is provided with spiral filtration face 3, described
Volume between spiral filtration face 3 and housing 1 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The spiral filtration
Face 3 includes the first filtering surface 31 being oppositely arranged and the second filtering surface 32 and is formed at the first filtering surface 31 and the second filtering surface 32
Between cavity, the cavity turns on the pod apertures 211.The pitch and external diameter of first helical blade 51 are all higher than institute
State the pitch and external diameter in spiral filtration face 3.
Also include support flow-guiding screen 4, first body of rod 21 is provided with two spiral helicine raised 212, described two convex
The gap risen between 212 is turned on the pod apertures 211, and two opposite inner sides of projection 212 are welded with the support flow-guiding screen 4
Connect, outside is welded with the first filtering surface 31 and the second filtering surface 32 respectively.The filtering surface 32 of first filtering surface 31 and second
Near the side of first body of rod 21 and raised 212 welding, opposite side is welded to each other and is integrated and is formed positioned at the first filtering
Cavity between the filtering surface 32 of face 31 and second.The rotation space in the spiral filtration face 3 inside the housing 1 is taper, described
The pitch in spiral filtration face 3 is gradually reduced along the direction of delivery port 20 of the rotating shaft 2.The mistake of first filtering surface 31 and second
Filtering surface 32 uses intermetallic compound porous film, and the average pore size of the intermetallic compound porous film is 1 μm, and thickness is
0.5mm。
Also include making the spiral filtration face 3 be the electricity applying system of anode for negative electrode, the housing 1.The electricity applying system
Including anode connector 61, positive plate 62 and positive terminal 63, the anode connector 61 is connected with rotating shaft 2, the positive plate 62
In the inwall of housing 1, the positive terminal 63 is connected and through housing 1 with positive plate 62.The positive plate 62 and spiral filtration face 3
The mating surface being engaged is provided with insulating barrier 64；The distance between the external diameter and insulating barrier 64 in the spiral filtration face 3 are 12mm.
When using, the positive pole of the positive terminal 63 and anode connector 61 and power supply, negative pole are connected respectively, then make to turn
Axle 2 is rotated in given pace, is then passed through dehydrated raw material toward housing 1 is interior from dehydrated raw material entrance 11, and dehydrated raw material is first passed around
The precommpression of the first helical blade 51, liquid is obtained then under electric field action, then after compression through spiral filtration face 3 and filtering
And siccative, wherein, the liquid flows through cavity, pod apertures 211, flow-guiding channel 210 successively, is finally discharged from delivery port 20, should
Turbidity≤the 1Ntu of liquid, can direct reuse in landscape, water for irrigation；The moisture content of gained siccative is maintained within 40-60%.
Claims (10)
1. there is the dehydration device in spiral filtration face, including housing (1) and the rotating shaft (2) in housing (1), the housing
(1) dehydrated raw material entrance (11) and drier outlet (12) are provided with, it is characterised in that：
The rotating shaft (2) includes first body of rod (21) with delivery port (20), and water conservancy diversion is provided with inside first body of rod (21)
Passage (210), first body of rod (21) the bar wall is provided with the pod apertures (211) of bar wall；
The outer wall of first body of rod (21) is provided with spiral filtration face (3), between the spiral filtration face (3) and housing (1)
Volume is gradually reduced along the delivery port direction of the rotating shaft (2), and dehydrated raw material is compressed and filtering gained through spiral filtration face (3)
Liquid flow through pod apertures (211), flow-guiding channel (210) successively, finally from delivery port (20) discharge, dehydrated raw material is through spiral mistake
Siccative obtained by filtering surface (3) compression and retention is discharged from drier outlet (12).
2. there is the dehydration device in spiral filtration face as claimed in claim 1, it is characterised in that：The spiral filtration face (3)
Including the first filtering surface (31) being oppositely arranged and the second filtering surface (32) and be formed at the first filtering surface (31) and second filtering
Cavity between face (32), the cavity and the pod apertures (211) are turned on, dehydrated raw material through spiral filtration face (3) compression and
Liquid obtained by filtering flows through cavity, pod apertures (211), flow-guiding channel (210) successively, is finally discharged from delivery port (20).
3. there is the dehydration device in spiral filtration face as claimed in claim 1, it is characterised in that：The rotating shaft (2) also includes
Second body of rod (22), the outer wall of second body of rod (22) is provided with the first helical blade (51).
4. there is the dehydration device in spiral filtration face as claimed in claim 3, it is characterised in that：Housing (1) inside
The rotation space of the first helical blade (51) is in cylinder；The pitch of first helical blade (51) is more than the spiral filtration
External diameter of the external diameter of the pitch in face (3) and/or first helical blade (51) more than the spiral filtration face (3).
5. there is the dehydration device in spiral filtration face as claimed in claim 1, it is characterised in that：Also include electricity applying system；Institute
Stating electricity applying system includes anode connector (61), positive plate (62) and positive terminal (63), the anode connector (61) and rotating shaft (2)
Connection, the positive plate (62) is connected and through housing positioned at housing (1) inwall, the positive terminal (63) with positive plate (62)
(1)。
6. there is the dehydration device in spiral filtration face as claimed in claim 5, it is characterised in that：The positive plate (62) and spiral shell
It is threaded through the mating surface that filtering surface (3) is engaged and is provided with insulating barrier (64)；The external diameter of the spiral filtration face (3) and insulating barrier (64)
The distance between be 8-12mm.
7. the dehydration device with spiral filtration face as described in one of claim 1-6, it is characterised in that：The spiral filtration
The inner surface in face (3) is provided with support flow-guiding screen (4).
8. there is the dehydration device in spiral filtration face as claimed in claim 7, it is characterised in that：On first body of rod (21)
Spiral helicine projection (212) is provided with, the side of the projection (212) is connected with support flow-guiding screen (4), the projection
(212) opposite side is connected with the spiral filtration face (3).
9. the dehydration device with spiral filtration face as described in one of claim 1-6, it is characterised in that：The housing (1)
The rotation space in internal spiral filtration face (3) is taper；And/or the pitch of the spiral filtration face (3) is along the rotating shaft
(2) delivery port (20) direction is gradually reduced.
10. the dehydration device with spiral filtration face as described in one of claim 1-6, it is characterised in that：The spiral mistake
Filtering surface (3) uses intermetallic compound porous film；The average pore size of the intermetallic compound porous film is 0.1-1 μm, thickness
It is 0.3-0.5mm；Moisture content≤60% of the siccative；Turbidity≤the 1Ntu of the liquid.
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| CN107989103A (en) * | 2017-12-07 | 2018-05-04 | 朱元彬 | Silt cleaning device in a kind of coal-mine water-house |
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