CN205528354U - Horizontal direct current field sludge drying device that gradually pressurizes - Google Patents
Horizontal direct current field sludge drying device that gradually pressurizes Download PDFInfo
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- CN205528354U CN205528354U CN201620194604.9U CN201620194604U CN205528354U CN 205528354 U CN205528354 U CN 205528354U CN 201620194604 U CN201620194604 U CN 201620194604U CN 205528354 U CN205528354 U CN 205528354U
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- crawler belt
- guide rail
- electric field
- frame
- drying device
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Abstract
The utility model discloses a horizontal direct current field sludge drying device that gradually pressurizes, it includes lower track, distributing device, goes up track, frame, guide rail, drive mechanism, flat brush, tripper, flusher and sweeper. The guide rail sets up separately two -layerly, and the guide rail of fixed connection in frame upper strata both sides be curved surface craspedodrome rail, and fixed connection be plane craspedodrome rail at the guide rail of frame lower floor both sides, and the vertical interval goes up the guide rail restraint transmission that the track is located the upper strata from dextrad left side degradation between the upper and lower two -layer guide rail, and lower track is located the guide rail restraint transmission of lower floor, from this constitution formula pressure intensifying structure step by step. The utility model discloses in put through the last track and the lower wet mud of direct centre gripping between the track of the positive negative pole of direct current field respectively, do not have the voltage drop problem so the expression dewatering district does not establish filter belt, optimize greatly and squeeze the environment, improve dehydration efficiency, the energy saving, the improve equipment security performance improves the mud cake mummification degree of producing above all greatly to the energy consumption of reduction system dehydration.
Description
Technical field
This utility model relates to environmental protecting device field, especially mud drying device field, specifically, this utility model
Relate to a kind of wet sludge anhydration device after city domestic sewage and Industrial Waste Water Treatments, a kind of horizontal type structure
Gradually pressurization DC electric field mud drying device.
Background technology
Along with national environmental protection policy implement, various places most attention city domestic sewage and the advanced treating of trade effluent,
Successively build a collection of sewage treatment plant, be configured with substantial amounts of equipment, preliminarily form scale the dirty water decontamination handles ability.Sewage
The side-product stayed after process is wet mud, reaches 80～90% in gelatinous wet moisture percentage in sewage sludge, is difficult to conventional dehydration methods
Reach intended mummification index.According to measuring and calculating, day process the city domestic sewage of ten thousand stere and about precipitate the wet mud of 10T, a dirt
If output every day the most a large amount of wet mud in water treatment plant's can not get timely drying and other treatment, just form another form of polluter.
The most efficiently the wet mud of mummification has become the technical barrier of current environmental protection industry (epi) facing, and some have the enterprise of research and development strength
Successively release different modes or the technical scheme of different structure form, start new office for the wet mud of sewage treatment plant's mummification
Face.At present, commercially available wet sludge anhydration device mainly has folded spiral shell formula, rotary drum, strainer formula, spiral etc., and these devices are basic
Although structure differs, but it is all that depended on pressure squeezing realizes wet sludge dewatering.4 kinds of forms are had because wet mud is aqueous, therein
Cellular water is difficult to breaking cellular wall by mechanical force, so the wet sludge anhydration index after Ya Zha is the highest, it is left that moisture content is still up to 70%
The right side, does not reaches wet sludge reduction, innoxious and resource type treating target.The good news is that the industry is in recent years in prior art
On the basis of step a stage again, during wet sludge pressing introduce DC electric field, utilize electro-osmosis principle to realize cellular water
Breaking cellular wall oozes out, thus improves dewatering efficiency.Although existing small-scale application on this type of strainer formula technical scheme market, most there is generation
Table is Chinese utility model patent publication number CN102653488A, CN201180005854.3 and China Patent No.
201310281866.Above-mentioned three technology scheme structural features is that drying zone is positioned among DC electric field, the squeezing of applying
Power is only from anode plate molectron and framework deadweight thereof, and in expressing process, this squeeze force is always definite value.This kind of definite value squeezing
Power design can not meet wet mud increases the demand of squeeze force therewith when moisture reduces, and continues to uniform pressure not
Further mummification purpose can be reached.It addition, prior art is provided with filter bag between both positive and negative polarity pole plate, wet mud is at press dewatering
During have the filter bag of isolation material to be separated by, add the voltage drop at both positive and negative polarity pole plate two ends, thus increase DC electric field and exist
The power loss of drying zone, causes energy consumption suddenly to increase, and dewatering efficiency is not the most obviously improved.
Utility model content
This utility model uses the deficiency of constant pressure press dewatering under DC electric field mainly for prior art, and
The filter bag of isolation material increases the problem of voltage drop between positive and negative electrode, proposes a kind of de-at drying zone along with wet mud
Water process takes gradual and orderly approach to apply pressure, and does not configure the horizontal of filter bag in structure between positive and negative electrode and gradually pressurize
DC electric field mud drying device.This apparatus structure is simple, operational efficiency is high, less energy consumption, sludge drying index reach 40～
50%。
This utility model is achieved through the following technical solutions technical goal.
Horizontal gradually pressurization DC electric field mud drying device, it include lower crawler belt, distributing device, upper crawler belt, frame, guide rail,
Drive mechanism, flat brush, discharger, irrigator and sweeper.Described frame is a kind of point of bilevel flat sleeping rectangular frame, ring
The lower crawler belt of shape is placed in frame lower floor, disposes crawler belt in annular, upper crawler belt and the lower alternate overlapping of crawler belt on frame upper strata, connects
The lower crawler belt pairing of the upper crawler belt of DC power anode and connection DC power cathode, composition electric osmose under the conditions of DC electric field
Dehydrated structure thoroughly.Described drive mechanism drives lower crawler belt left-hand circular transmission, the upper crawler belt right-hand circular transmission of linkage, joins
To crawler belt synchronous backward transmission form the right side and enter the material transferring structure that a left side goes out.Described distributing device is placed in crawler belt right-hand member, cloth
The outlet upper crawler belt of alignment of device and lower crawler belt right-hand member joint portion, constitute mouth-to-mouth servo material injecting mechanism.Described flat brush is placed in
Upper crawler belt left end, the palm fiber of flat brush directly contacts crawler belt outer wall and constitutes random cleaning structure.The scraper plate of described discharger is direct
Recline bottom lower crawler belt left end, irrigator built-in bottom lower crawler belt right-hand member and external sweeper position stagger and common faced by
Lower crawler belt shower water.It thes improvement is that: described guide rail is double-layer rail, and the guide rail being fixedly connected on both sides, frame upper strata is song
Face direct movement rail, the guide rail being fixedly connected on frame lower floor both sides is plane direct movement rail, between upper and lower two-layer guide rail vertical dimension from
Decrescence, upper crawler belt is retrained transmission by the guide rail being positioned at upper strata on a dextrad left side, and lower crawler belt is retrained transmission, upper shoe by the guide rail being positioned at lower floor
Band coordinates composition horizontal wedge shape squeezing dehydrated structure with lower crawler belt.
As further improvement project, the cross section of described guide rail is groove type, and opening edge is towards inner side.
As further improvement project, described upper crawler belt coordinates the horizontal wedge shape squeezing constituting a right big left side little de-with lower crawler belt
Water-bound, small end vertical interval 3～8mm, big end spacing vertical interval is than small end spacing big 4～12mm.
As further improvement project, the often joint pressing plate of described lower crawler belt and the link of upper crawler belt is respectively arranged at two ends with roller,
The roller of built-in bearing rolls along guide rail.
As further improvement project, the often joint pressing plate front of described lower crawler belt and the link of upper crawler belt is the length of area equation
Square block, every piece of area is selected one in the range of 0.06～0.20 and is chosen.
As further improvement project, the often joint pressing plate cross section of described lower crawler belt link is wide at the top and narrow at the bottom trapezoidal, often saves
Front reserving gaps 0.2～0.6mm between pressing plate, reverse side reserving gaps is than front preset slot gap length 1.0～3.0mm.
As further improvement project, described lower crawler belt and the linkage of upper crawler belt constant speed, its circulation transmission travel line speed is
0.5～3m/min.
This utility model compared with prior art, has the positive effect that:
1, utilize the upper crawler belt of guide rail constraint and the press dewatering structure of lower crawler haulage, retrain reliably, operate steadily；
2, between upper/lower guide road, vertical interval is successively decreased to discharging opening from charging aperture, and in composition, crawler belt descends crawler belt gradually relatively
Entering formula pressurized construction, under DC electric field, order, lasting supercharging, meet wet mud High-efficiency dehydration technology, create for efficient mummification
Essential condition；
3, because not setting filter bag in structure, wet mud to be drained off, directly between lower crawler belt and upper crawler belt, does not exists
Filter bag Insulation Problems, the both positive and negative polarity of DC source directly turns on wet sludge blanket, therefore the voltage drop produced during press dewatering
The most small, so it is also beneficial to strengthen press-area wet mud cloth area and thickness, can be at optimum voltage, electric current density bar
It is dehydrated under part, easily reaches efficient mummification purpose.
Accompanying drawing explanation
Fig. 1 is this utility model agent structure generalized section.
Fig. 2 is structural profile schematic diagram at C-C in Fig. 1, shows upper crawler belt and lower crawler belt linkage structure in figure.
Fig. 3 is that in Fig. 1, upper crawler belt and lower crawler belt coordinate the partial structurtes schematic diagram implementing the gradual squeezing of wet mud.
Fig. 4 is structural profile schematic diagram at B-B in Fig. 1, shows and be positioned at the upper crawler belt of charging aperture and lower crawler belt and lead in figure
Rail initial engagement state.
Fig. 5 is structural profile schematic diagram at A-A in Fig. 1, shows and be positioned at the upper crawler belt of discharging opening and lower crawler belt and lead in figure
The final mated condition of rail.
Fig. 6 is structure partial enlarged diagram at I in Fig. 5.
Detailed description of the invention
Below according to accompanying drawing and in conjunction with the embodiments, the utility model is described in further detail.
Horizontal gradually pressurization DC electric field mud drying device shown in Fig. 1, is supporting day to process 20,000 m3City domestic sewage
Treatment plant for the embodiment of sludge dewatering, the architectural feature of this device be embodied in utilize built-in guide rail 5 limit upper crawler belt 3 and under
Crawler belt 1 circulates transmission in the track determined.Because between levels guide rail 5, spacing is horizontal wedge shape, in formation crawler belt 3 relatively under
The pressurized construction that crawler belt 1 is gradual.Under the conditions of DC electric field, on the one hand this structure subtracts along with the wet sludge moisture content being squeezed
Few, strengthen squeeze force constantly, in an orderly manner.On the other hand impacted the water wall of cellular water in wet mud by electron stream, facilitate
Cellular water breaking cellular wall overflows, and is achieved in the purpose that produced sludge cake moisture content is low.
This utility model is horizontal gradually adds formula DC electric field mud drying device, and it includes lower crawler belt 1, distributing device 2, upper crawler belt
3, frame 4, guide rail 5, drive mechanism 6, flat brush 7, discharger 8, irrigator 9 and sweeper 10.Described frame 4 is a kind of dividing up and down
The flat sleeping rectangular frame of layer, this part is the carrier for installing associated components.As it is shown in figure 1, the lower crawler belt 1 of annular is placed in machine
Frame 4 lower floor, disposes crawler belt 3 in annular, upper crawler belt 3 and the lower alternate overlapping of crawler belt 1 on frame 4 upper strata.In this device, upper crawler belt 3 is even
Connecing the positive pole of DC electric field, lower crawler belt 1 connects DC electric field negative pole, and both are composed of as shown in Figure 3 under the conditions of DC electric field
Electroosmotic dewatering structure.This is rational in infrastructure utilizes electron stream to impact the cellular water water wall being difficult to discharge in wet mud, facilitates thin
Born of the same parents' water breaking cellular wall overflows, thus strengthens the mass dryness fraction of produced sludge cake.Described drive mechanism 6 is to drive upper crawler belt 3 together with lower crawler belt 1
The actuating unit of transmission.Drive mechanism 6 as shown in Figure 2 directly drives lower crawler belt 1 transmission counterclockwise, and the upper crawler belt 3 of linkage is then
Having right-hand circular transmission, although both transmission direction are different, but transmission speed is identical.The present embodiment specification is little, therefore is being permitted
Can select to stand the transmission speed of 1.5m/min in scope.This utility model reversely rotates because of the crawler belt constant speed of pairing, is formed such as Fig. 3
Shown in the right side enter the material transferring structure that a left side goes out, Fig. 4 is structural profile schematic diagram B-B in Fig. 1, shows charging aperture on the right side of being positioned in figure
Upper crawler belt 3 and lower crawler belt 1 and guide rail 5 initial engagement state, Fig. 5 is structural profile schematic diagram, displaying in figure A-A in Fig. 1
It is positioned at the left side upper crawler belt 3 of discharging opening and lower crawler belt 1 and the final mated condition of guide rail 5.Described distributing device 2 is that one is injected and waited to press
Squeezing the device of wet mud, distributing device 2 as shown in Figure 1 is placed in crawler belt 3 right-hand member, and the outlet of distributing device 2 faces toward upper crawler belt 3 He
Lower crawler belt 1 right-hand member joint portion, constitutes mouth-to-mouth servo material injecting mechanism.Export waiting of persistently exporting from distributing device 2 and squeeze wet dirt
Mud, is jointly involved in drying zone by the upper crawler belt 3 of right-hand circular transmission and the lower crawler belt 1 of left-hand circular transmission immediately and is squeezed
Dehydration.This utility model middle guide 5 cross section is groove type, and opening edge is towards inner side, and guide rail 5 sets up separately in frame about 4 two-layer,
The guide rail 5 being fixedly connected on both sides, frame 4 upper strata is curved surface direct movement rail, and the guide rail 5 being fixedly connected on frame 4 lower floor both sides is flat
Face direct movement rail, between upper and lower two-layer guide rail 5, vertical interval is the most decrescence, and upper crawler belt 3 is passed by guide rail 5 constraint being positioned at upper strata
Dynamic, lower crawler belt 1 is retrained transmission by the guide rail 5 being positioned at lower floor.During installation, upper crawler belt 3 coordinates preset clearance between face with lower crawler belt 1
In horizontal wedge shape, the present embodiment Right vertical spacing is 11mm, and left vertical spacing is 4mm.Upper crawler belt 3 in this utility model
With the both positive and negative polarity that lower crawler belt 1 is respectively turned on DC electric field, when upper crawler belt 3 and upper crawler belt 1 in the lump along guide rail 5 wedge shape track transport
OK, gradual pressurization stages is i.e. entered.Another important technology feature of this utility model is upper crawler belt 3 and lower crawler belt 1 coordinates face
Between do not set filter bag, during squeezing, wet mud is directly by folded by upper crawler belt 3 and lower crawler belt 1, so not depositing during press dewatering
In the side effect of filter bag insulation, the both positive and negative polarity of DC electric field directly passes through the wet mud being squeezed, therefore during press dewatering
The voltage drop produced is the most small, is so conducive to increasing press-area wet mud cloth area and thickness, it is simple to accomplish
Press dewatering under good voltage, current density condition, also allows for the cellular water water wall that electron stream is squeezed in wet mud, breaking cellular wall
The cellular water overflowed is discharged with water of crystallization.This utility model in order to reduce the frictional resistance of upper crawler belt 3 and lower crawler belt 1 and guide rail 5,
The often joint pressing plate linked at upper crawler belt 3 and lower crawler belt 1 is respectively arranged at two ends with roller I, roller I built-in bearing II, this kind such as Fig. 6 institute
The rolling structure shown is easy to roller I along guide rail 5 smart scroll.
The wet mud being squeezed in said structure forms mud cake and water after drying zone, water from lower crawler belt 1 link pressing plate it
Between gap in drench under, mud cake easily sticks to the front of lower crawler belt 1 pressing plate.Because of crawler belt 3 upper in this utility model and lower crawler belt 1 it
Between do not set filter bag, so be equipped with lower crawler belt 1 in addition to possessing pressing function, should have trickle function, also to prevent wet mud
Invalid discharge gap between pressing plate.The lower crawler belt 1 of this utility model design has drip-preventing function, the often joint pressure of its link
Block front is the rectangular blocks of area equation, and often joint briquetting cross section is wide outside and narrow inside trapezoidal.Cross section is trapezoidal pressing plate
One along link, and the gap of formation is splayed, this kind of flaring groove part gap can effective filtrate, avoid again wet mud to adhere to or leak
Fall.The long 1000mm of the present embodiment pressing plate, wide 100mm, its area is 0.1.Front preset slot outwardly between the pressing plate of link
Gap 0.3mm, reverse side reserving gaps 3.3mm inwardly.Lower the 1st adhesion mud cake of carrying out in operation, the mud cake that the lower crawler belt 1 of removing adheres to leans on
Discharger 8 performs, and is arranged on the discharger 8 on the left of lower crawler belt 1 and passes through at the uniform velocity to rotate, will stick to the mud on lower crawler belt 1 front
Cake scrapes, and this kind of mechanicalness is removed and adhered to mud cake reliably, efficiently.But it is the highest that mechanicalness removes cleanliness factor, and lower crawler belt 1 front is still
There is trace mud cake vestige, this utility model uses the method for hydrodynamic cleaning uninterruptedly to clean lower crawler belt 1, specifically performs
Machinery includes being positioned at the irrigator 9 inside and outside lower filter belt 1 and sweeper 10, this two pieces machinery rinse in terms of inside and outside two crawler belt 1,
Guarantee that the lower crawler belt 1 again going into press-area often saves holding cleaning at pressing plate front and gap, rinse the sewage produced
Then have to concentrate from discharge outlet and leak.The flat brush 7 of location and installation relies on palm fiber to remove the residual dirt that upper crawler belt 3 often saves on clamp surface
Mud, it is ensured that upper crawler belt 3 often saves pressing plate and is again introduced into surface cleaning during press-area.
In this utility model, upper crawler belt 3 coordinates reserved spacing between face with lower crawler belt 1, can be by guide rail 5 installation site
Adjust and obtain.Depending on concrete spacing dimension is according to specification or produced moisture content of the cake, as long as spacing is permitted at this utility model
In the range of can accomplish wet mud high-efficiency dehydration.The mud cake of the low-water-content of output had both been accomplished notable decrement, had been subtracted dirt, and was easy to
Subsequent transportation, storage, also allow for following resourceization and utilize.
In sum, both ways, one is upper crawler belt 3 to the structure innovation major embodiment of this utility model hinge structure
And not setting filter bag between lower crawler belt 1, wet mud to be squeezed directly is folded squeezing by upper crawler belt 3 and lower crawler belt 1.Two is directly
Longitudinal wedge shape squeezing dehydrated structure is used, it is achieved incremental formula supercharging is dehydrated under stream electric field.Above-mentioned two structure common implementings, enter
The press dewatering environment of the wet mud of one-step optimization, significantly improves press dewatering rate, is greatly saved the energy, and effective lifting means is pacified
Full performance, it is most important that be greatly improved produced mud cake mummification degree.The moisture content of the cake only 50% that the present embodiment produces, ratio is existing
Have technical products to improve about 15%, and often produce one ton of mud cake and economize on electricity about 100 degree, than prior art products energy-conservation 15% with
On, its economic benefit and social benefit are the most notable.
Claims (7)
1. horizontal gradually pressurization a DC electric field mud drying device, it include lower crawler belt (1), distributing device (2), upper crawler belt (3),
Frame (4), guide rail (5), drive mechanism (6), flat brush (7), discharger (8), irrigator (9) and sweeper (10)；Described frame
(4) being a kind of point of bilevel flat sleeping rectangular frame, the lower crawler belt (1) of annular is placed in frame (4) lower floor, in frame (4)
Upper strata disposes the upper crawler belt (3) of annular, upper crawler belt (3) and the alternate overlapping of lower crawler belt (1), connects the upper crawler belt of DC power anode
And connect lower crawler belt (1) pairing of DC power cathode, composition electroosmotic dewatering structure under the conditions of DC electric field (3)；Institute
State drive mechanism (6) and drive lower crawler belt (1) left-hand circular transmission, upper crawler belt (3) the right-hand circular transmission of linkage, pairing
Crawler belt synchronous backward transmission forms the right side and enters the material transferring structure that a left side goes out；Described distributing device (2) is placed in crawler belt (3) right-hand member, cloth
The upper crawler belt (3) of outlet alignment of glassware (2) and lower crawler belt (1) right-hand member joint portion, constitute mouth-to-mouth servo material injecting mechanism；Described
Flat brush (7) is placed in crawler belt (3) left end, and the palm fiber of flat brush (7) directly contacts crawler belt (3) outer wall composition and cleans knot at random
Structure；The scraper plate of described discharger (8) directly against crawler belt on the lower (1) left end bottom, irrigator built-in bottom lower crawler belt (1) right-hand member
(9) stagger with external sweeper (10) position and common in the face of lower crawler belt (1) shower water；It is characterized in that: described guide rail (5)
For double-layer rail, the guide rail (5) being fixedly connected on frame (4) both sides, upper strata is curved surface direct movement rail, is fixedly connected on frame (4) lower floor
The guide rail (5) of both sides is plane direct movement rail, and between bilevel guide rail (5), vertical dimension is the most decrescence, upper crawler belt (3)
By be positioned at upper strata guide rail (5) constraint transmission, lower crawler belt (1) by be positioned at lower floor guide rail (5) constraint transmission, upper crawler belt (3) with
Lower crawler belt (1) coordinates composition horizontal wedge shape squeezing dehydrated structure.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described guide rail
(5) cross section is groove type, and opening edge is towards inner side.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described upper crawler belt
(3) coordinate with lower crawler belt (1) the horizontal wedge shape constituting a right big left side little to squeeze dehydrated structure, small end vertical interval 3～8mm, hold greatly
Vertical interval is than small end spacing big 4～12mm.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described lower crawler belt
(1) and the often joint pressing plate that links of upper crawler belt (3) is respectively arranged at two ends with roller (I), the roller (I) of built-in bearing (II) is along guide rail
(5) roll.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described lower crawler belt
(1) and upper crawler belt (3) link often joint pressing plate front be the rectangular blocks of area equation, every piece of area is at 0.06～0.20 model
Select one in enclosing to choose.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described lower crawler belt
(1) the often joint pressing plate cross section linked is wide at the top and narrow at the bottom trapezoidal, often front reserving gaps 0.2～0.6mm between joint pressing plate, reverse side
Reserving gaps is than front preset slot gap length 1.0～3.0mm.
Horizontal gradually pressurization DC electric field mud drying device the most according to claim 1, it is characterised in that: described lower crawler belt
(1) linking with upper crawler belt (3) constant speed, its circulation drive line speed is 0.5～3m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620194604.9U CN205528354U (en) | 2016-03-15 | 2016-03-15 | Horizontal direct current field sludge drying device that gradually pressurizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620194604.9U CN205528354U (en) | 2016-03-15 | 2016-03-15 | Horizontal direct current field sludge drying device that gradually pressurizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205528354U true CN205528354U (en) | 2016-08-31 |
Family
ID=56781496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620194604.9U Expired - Fee Related CN205528354U (en) | 2016-03-15 | 2016-03-15 | Horizontal direct current field sludge drying device that gradually pressurizes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205528354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668982A (en) * | 2016-03-15 | 2016-06-15 | 江苏百新环境工程有限公司 | Horizontal gradually-pressurizing direct-current electric field sludge drying device |
| CN110540351A (en) * | 2019-08-18 | 2019-12-06 | 山东鹤见红旗环境科技有限公司 | sludge dewatering machine |
-
2016
- 2016-03-15 CN CN201620194604.9U patent/CN205528354U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668982A (en) * | 2016-03-15 | 2016-06-15 | 江苏百新环境工程有限公司 | Horizontal gradually-pressurizing direct-current electric field sludge drying device |
| CN110540351A (en) * | 2019-08-18 | 2019-12-06 | 山东鹤见红旗环境科技有限公司 | sludge dewatering machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 |