CN2538801Y - Mud concentration dewatering machine - Google Patents
Mud concentration dewatering machine Download PDFInfo
- Publication number
- CN2538801Y CN2538801Y CN 02212781 CN02212781U CN2538801Y CN 2538801 Y CN2538801 Y CN 2538801Y CN 02212781 CN02212781 CN 02212781 CN 02212781 U CN02212781 U CN 02212781U CN 2538801 Y CN2538801 Y CN 2538801Y
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- strainer
- dehydration tube
- filter
- mud
- sludge concentration
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- Filtration Of Liquid (AREA)
Abstract
The utility model discloses a sludge concentrated dewaterer which integrates the concentration and the dehydration of mud as a whole, comprising a concentration device, a pressure and filter device, a water spraying cycle device and a frame group. The utility model is characterized in that: the concentration device is arranged in the anterior part of the equipment, which comprises a mixed blender and a rotating slowly pre-dewatering tube covered with a filter screen. The pressure and filter device comprises a press roller group, two filter belts and a pneumatic control device; the filter belts tense and rectify pneumatically. The mud after being concentrated pre-dewatered is discharged by the pre-dewatering tube and comes into the pressure and filter device for further pressurizing dehydration through the press roller group. The water spraying cycle device recycles the discharged clear filtrate. The utility model has the advantages of suitability for small and medium sized sewage treatment factory, commutability of concentration poll, construction investment saving, full automatic operation of equipment, and lower energy consumption and water consumption.
Description
Technical field
The utility model relates to a kind of waste disposal plant, exactly, is a kind of sludge concentration and dewatering machine that the dehydration concentrated and mud of mud is integrated in one.
Background technology
Develop rapidly along with China's industry and urban construction, trade effluent and municipal effluent are increasing, demand to sewage disposal also grows with each passing day, the process of domestic general sewage disposal at present is: will be put in the settling tank through the sewage after physical treatment and the bio-aeration and precipitate, the mud of post precipitation is sent into concentration basin and is concentrated, discharge supernatant liquor wherein, mud suction dehydration equipment after will concentrating with pump dewaters, this sewage water treatment method is owing to need build concentration basin, enlarged the floor space of sewage work, and then construction cost and running cost have been increased, for addressing this problem, domestic existing sewage disposal project has been introduced external concentrating and dewatering integrated sewage disposal device, but owing to cost an arm and a leg, far can not satisfy the needs of domestic sewage treatment project.Therefore, develop and develop the economical and practical matter of great urgency that has become environment-protecting industrial with dewatering integrated sewage disposal device that concentrates.
Jiangsu scientific and technological achievement circular/20000101,07,12 discloses a kind of " sludge dewatering belt filter press ", this machine adopts pneumatic tensioning, automatic deviation correction, mud through the gravity district, precompression district, three levels of pressed zone dewater, the descending realization of squeeze roll diameter is progressively pressurizeed.This belt filter press is compared with the frame-type pressure filter, and the level of automation height can be worked continuously, and power consumption is low, but only possesses dehydrating function, still must build concentration basin.
Summary of the invention
The purpose of this utility model provides and a kind ofly is applicable to that concentrate and dehydration middle or small sewage treatment, collection mud are the sludge concentration and dewatering machine of one, and the fully automatic operation of implement device, thereby the investment cost and the working cost of reduction middle or small sewage treatment.
For achieving the above object, the technical solution adopted in the utility model is: the frame front of this sludge concentration and dewatering machine is equipped with concentrating unit, filter-pressing device is equipped with at the frame rear portion, the feed end of filter-pressing device is positioned at the below of concentrating unit mud outlet end, with concentrating unit and the corresponding position of filter-pressing device, the water spray circulation device also is housed.
Concentrating unit comprises motor, variator 1, mixing agitator 27 and pre-dehydration tube 3, mixing agitator 27 is installed in the equipment front portion, be communicated with the mud inlet end of pre-dehydration tube 3, variator 1 is connected with the axis 2 of pre-dehydration tube, drive pre-dehydration tube rotation, pre-dehydration tube circumference is coated with filter screen 3-6, in motor bottom revolution speed control device 23 is arranged.
Filter-pressing device comprises motor 26, synchromesh gear 24, goes up strainer 7, lower filter belt 12, live roll group 16, squeeze roll group 15 and air control unit, the feed end of last strainer 7 is positioned at the below of pre-dehydration tube 3 mud outlet ends, strainer 7 merges with lower filter belt 12 in upset place of feed end, the parallel multiple tracks squeeze roll that move through, at the filter-pressing device discharge end separately, return the zero position of feed end respectively, the corresponding site of upper and lower strainer is equipped with air control unit, at the feed end of last strainer 7 chute 18 and distribution measuring apparatus is housed also.
The water spray circulation device comprises pump 25, syringe pipe 4,17,20 and Rinsing Area 22, and Rinsing Area is communicated with pump 25, external water source and syringe pipe 4,17,20 below pre-dehydration tube 3.
The axis 2 of pre-dehydration tube 3 is made up of two minor axis 2-1 and a sleeve pipe 2-2, the two ends of sleeve pipe 2-2 match to merge with the afterbody of two minor axis 2-1 respectively and are rigidly connected, pre-dehydration tube 3 excircles are skeleton constructions, the framework front end face is fixed with ring-shaped baffle 3-1, back-end framework has tail ring 3-5, be fixed with pole 3-2 and supporting ring 3-3 between baffle plate and the tail ring, supporting ring 3-3 is fixed on the sleeve pipe 2-2 of axis by gusset, tail ring 3-5 is fixed on the minor axis 2-1 of back by the clip at center, be equipped with in the pre-dehydration tube 3 and carry impeller 3-4, impeller is consolidated with pre-dehydration tube framework, and filter screen 3-6 is subjected to frame supported.
The filter screen setting device is equipped with in the filter screen 3-6 outside of pre-dehydration tube, and this device is made up of two pull bar 3-7, screw 3-8 and bolt 3-9, on two pull bars corresponding bolt hole is arranged, and also has the screw of position corresponding on pull bar 3-7 and strut framework 3-2.
Air control unit comprises strainer tightening device 19,21 and strainer apparatus for correcting 5,11, strainer tightening device 19,21 is installed in upset place of upper and lower strainer respectively, strainer apparatus for correcting 5,11 is contained in the backward position of upper and lower strainer after separately respectively, at the discharge end of upper and lower strainer cleaning shoe 10 is housed respectively also.
The syringe pipe 4,17,20 of water spray circulation device bridge respectively pre-dehydration tube 3 and upper and lower strainer 7,12 do not carry the mud position above, filtrate collection box 14 also is housed below single squeeze roll.
Conveying impeller 3-4 in the pre-dehydration tube 3 is not for there being the axle volution, and the height of impeller and helix angle are successively decreased from the mud inlet end to the mud outlet end successively, and the length of impeller is less than the length of pre-dehydration tube.
The utility model has been saved occupation of land and investment that sewage treatment project is built concentration basin owing to adopt pre-dehydration tube to carry out concentrating of mud; Owing to adopt pre-dehydration tube and belt filter-pressing device, greatly reduce energy consumption; The fully automatic operation of equipment has reduced artificial operation and maintenance cost.The water spray circulation device that equipment adopts makes filtrate can be recycled utilization, reduces the water consumption.High efficiency, maximum solid capture rate is about 99%, greater than general same category of device.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of sludge concentration and dewatering machine;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the fundamental diagram of sludge concentration and dewatering machine;
Fig. 4 is the structural representation of pre-dehydration tube;
Fig. 5 is a strainer tightening device synoptic diagram;
Fig. 6 is the A-A cross sectional view of Fig. 5;
Fig. 7 is a distribution measuring apparatus synoptic diagram;
Fig. 8 is the A-A cross sectional view of Fig. 7.
Embodiment
The utility model comprises frame, concentrating unit, filter-pressing device and water spray circulation device, concentrating unit is contained in frame front, filter-pressing device is contained in the frame rear portion, the feed end of filter-pressing device is positioned at the below of concentrating unit mud outlet end, and the water spray circulation device is contained in respectively and concentrating unit and the corresponding position of filter-pressing device.Fig. 1 and Fig. 2 are a specific embodiment of the present utility model, as shown in the figure, motor and variator 1 are fixed on the frame 6, dismountable protective shield 13 is housed on the frame, the output terminal of variator 1 is connected with axis 2 keys of pre-dehydration tube 3, drive pre-dehydration tube rotation, because the rotating speed of pre-dehydration tube 3 directly has influence on the quality of sludge yield and sludge dewatering, therefore must look cases of dehydration adjusts at any time, this machine adopts hand gear to regulate rotating speed, the device of control rotating speed is a handwheel 23, and below motor, stepless change is regulated.The mud inlet end of pre-dehydration tube 3 is fixed with ring-shaped baffle 3-1, thickened sludge is admitted in the tube by the collar extension place of baffle plate 3-1, clean filtrate flows out by filter screen 3-6, import Rinsing Area 22, mud is carried under the guiding of impeller 3-4, by the uncovered discharge of pre-dehydration tube 3 mud outlet ends at tube internal screw shape, drop on the strainer 7 through chute 18, the distribution measuring apparatus is housed herein, and effect is the thickness of mud cake on the control strainer, and makes its uniform distribution on whole bandwidth.Last strainer 7 and lower filter belt 12 begin to merge after upset, and mud is sandwiched between two bands and moves forward.Squeeze roll group 15 is vertical multilayer arranges, and the squeeze roll diameter is descending, realizes the pressurization gradually to mud in the strainer.Upper and lower strainer after the merging is parallel to each other and passes through the multiple tracks squeeze roll circuitously, at the discharge end of filter-pressing device separately, mud cake is discharged.On the upper and lower strainer of discharge end, cleaning shoe 10 is housed respectively.The pressure in press filtration district is mainly controlled by the tensile force of strainer, and strainer tightening device 19,21 is installed in upset place of upper and lower strainer respectively, moves bridle rolls by cylinder and makes the strainer tensioning.The straight line of strainer does not have inclined to one side operation to be realized by the strainer apparatus for correcting, two strainer apparatus for correcting 5,11 are contained in the backward position of upper and lower strainer after separately respectively, comprise cylinder and pneumatic limit switch, when the strainer sideslip, the limit switch contactor is touched on the strainer limit, control cylinder moves, and makes strainer produce opposite drift angle, thereby corrects sideslip.When the strainer sideslip excessively or control when malfunctioning, the emergency switch that is positioned at both sides starts, strainer drives and stops immediately.At the drive roll 9 of filter-pressing device discharge end and the axle head of driven roll 8, synchromesh gear 24 is installed, guarantee the synchronous operation of two rollers and upper and lower strainer.Above pre-dehydration tube, a syringe pipe 4 is arranged, respectively there are a syringe pipe 17 and 20, three syringe pipes to be communicated with at upper and lower strainer above not with the mud position with pump 25, Rinsing Area 22 and external water source, can clean filter screen and strainer.In single squeeze roll bottom filtrate collection dish 14 is housed respectively, during erecting equipment, can repaiies a kerve in the bottom, catch tray is communicated with kerve, and the dirty filtrate that addle after the flushing and strainer extrude can all flow into kerve, returns settling tank again.
As shown in Figure 3, mud mixes with flocculant solution 28 in mixing agitator 27, be admitted to the pre-dehydration tube 3 that is lined with filter screen of slow rotation through pipeline, by pre-dehydration tube the time, the most of moisture of disengaging in the flocculation process is discharged by filter screen, is collected in the Rinsing Area 22 of pre-dehydration tube below.Discharge by the mud outlet end of pre-dehydration tube through the mud that concentrates the pre-dehydration in back, fall on the strainer 7 along a chute 18, be turned to when being moved to the turning point on the lower filter belt 12, mud is sandwiched between the upper and lower strainer through descending multiple tracks squeeze roll, pressure and shearing force that water is increased are gradually extruded, and the mud cake after the dehydration is discharged from the discharge end of filter-pressing device.Be collected into the filtrate in the Rinsing Area 22, be pressed and delivered to cleaning head 4,17,20 through circulation and clean filter screen and strainer, or overflow through overflow port.
As shown in Figure 4, the axis 2 of pre-dehydration tube 3 is made up of two minor axis 2-1 and a sleeve pipe 2-2, and the tail end of two minor axises and sleeve pipe two ends are rigidly connected, and two minor axis 2-1 are fixed on the frame 6 by bearing support.The ring-shaped baffle 3-1 of pre-dehydration tube 3 framework front end faces can make mud can't help the front end outflow, and the tail ring 3-5 of tail end opens wide, and mud is discharged.Be fixed with axial pole 3-2 and radial supporting ring 3-3 between baffle plate 3-1 and the tail ring 3-5, in order to support filter screen 3-6.Supporting ring 3-3 is fixed on by gusset on the sleeve pipe 2-2 of axis, and tail ring 3-5 is fixed on the diameter of axle of back minor axis 2-1 by the clip at muscle and center, and the fixedly screw of filter screen is arranged at least one pole 3-2.It is the cored screw that does not have axle that spirrillum in the pre-dehydration tube 3 is carried impeller 3-4, play guide functions, and can stir mud, be beneficial to dehydration, the length of impeller is less than pre-dehydration tube length, and in order to alleviate cylindrical shell weight, the length of impeller 3-4 is about 1/3 of pre-dehydration tube length in the present embodiment, the position helps mud extraction at the postmedian of tube.Because mud continuous multiviscosisty during by pre-dehydration tube, the height of spiral impeller and the angle of helix angle are successively decreased from the mud inlet end to the mud outlet end gradually.Carry the outward flange and the framework of impeller 34 to be consolidated.
As shown in Figure 5 and Figure 6, the filter screen setting device that present embodiment adopts is: be shaped on perforation at filter screen 3-6 two ends vertically, two pull bar 3-7 insert in the hole, and a pull bar is fixed on the pole 3-2 with screw 3-8, behind another root tension filter screen, two lever locks are tight with bolt 3-9.With the filter screen tensioning and be fixed on the framework alternate manner can also be arranged, first-class as filter screen tension back is directly sewed up two ends and is fixed on pole.
Fig. 7 and the distribution measuring apparatus that Figure 8 shows that present embodiment adopts.The upper end of chute 18 is corresponding with the mud outlet end of pre-dehydration tube 3, but the grid distributor 18-1 of move left and right is housed on the chute 18, there is distribution pawl 18-2 the grid distributor lower end, the distribution pawl is screwed on grid distributor, angle can be adjusted, and mobile grid distributor 18-1 can make mud at the bandwidth direction uniform distribution.The distribution pawl can be an one with grid distributor also, stretches out certain-length and bend an angle to get final product.Both sides, chute 18 lower end are fixed with splash pan 18-3, and splash pan is positioned at the top of strainer 7 feed end both sides, and measuring apparatus 18-4 is housed between two splash pans.In the present embodiment, measuring apparatus 18-4 is a block length plate, and the long slab two ends tilt to be fixed on the splash pan of both sides with screw, and there is forward an inclination angle upper edge of long slab, there is an inclination angle backward on the base of long slab, adjusts the thickness that mud cake just can be controlled in space between long slab base and the last strainer.Measuring apparatus can also adopt other form such as vertical long slab.
The utility model also can adopt belt filter-pressing device of the prior art and water spray circulation device, then is assembled by the array configuration in this specification sheets technical scheme.
In addition, concentrating unit of the present utility model and filter-pressing device two portions can also be made separate type, use as the thickening machine or the filter pressing dehydrator of simple function.
Claims (10)
1, a kind of sludge concentration and dewatering machine, comprise frame, it is characterized in that: frame front is equipped with concentrating unit, filter-pressing device is equipped with at the frame rear portion, the feed end of filter-pressing device is positioned at the below of concentrating unit mud outlet end, with concentrating unit and the corresponding position of filter-pressing device, the water spray circulation device also is housed.
2, sludge concentration and dewatering machine according to claim 1, it is characterized in that: concentrating unit comprises motor, variator (1), mixing agitator (27) and pre-dehydration tube (3), mixing agitator (27) is installed in the equipment front portion, be communicated with the mud inlet end of pre-dehydration tube (3), variator (1) is connected with the axis (2) of pre-dehydration tube, drive pre-dehydration tube rotation, pre-dehydration tube circumference is coated with filter screen (3-6), in motor bottom revolution speed control device (23) is arranged.
3, sludge concentration and dewatering machine according to claim 1, it is characterized in that: filter-pressing device comprises motor (26), synchromesh gear (24), last strainer (7), lower filter belt (12), live roll group (16), squeeze roll group (15) and air control unit, the feed end of last strainer (7) is positioned at the below of pre-dehydration tube (3) mud outlet end, strainer in upset place of feed end (7) merges with lower filter belt (12), the parallel multiple tracks squeeze roll that move through, at the filter-pressing device discharge end separately, return the zero position of feed end respectively, on, the corresponding site of lower filter belt is equipped with air control unit, at the feed end of last strainer (7) chute (18) and distribution measuring apparatus is housed also.
4, sludge concentration and dewatering machine according to claim 1, it is characterized in that: the water spray circulation device comprises pump (25), syringe pipe (4,17,20) and Rinsing Area (22), Rinsing Area is communicated with pump (25), external water source and syringe pipe (4,17,20) in pre-dehydration tube (3) below.
5, sludge concentration and dewatering machine according to claim 2, it is characterized in that: the axis (2) of pre-dehydration tube (3) is made up of two minor axises (2-1) and a sleeve pipe (2-2), the two ends of sleeve pipe (2-2) match to merge with the afterbody of two minor axises (2-1) respectively and are rigidly connected, pre-dehydration tube (3) excircle is a skeleton construction, the framework front end face is fixed with ring-shaped baffle (3-1), back-end framework has tail ring (3-5), be fixed with pole (3-2) and supporting ring (3-3) between baffle plate and the tail ring, supporting ring (3-3) is fixed on the sleeve pipe (2-2) of axis by gusset, tail ring (3-5) is fixed on the back minor axis (2-1) by the clip at center, be equipped with in the pre-dehydration tube (3) and carry impeller (3-4), impeller is consolidated with pre-dehydration tube framework, and filter screen (3-6) is subjected to frame supported.
6, sludge concentration and dewatering machine according to claim 2, it is characterized in that: the filter screen setting device is equipped with in filter screen (3-6) outside of pre-dehydration tube, this device is made up of two pull bars (3-7), screw (3-8) and bolt (3-9), on two pull bars corresponding bolt hole is arranged, go up the screw that also has position corresponding at pull bar (3-7) and strut framework (3-2).
7, sludge concentration and dewatering machine according to claim 3, it is characterized in that: air control unit comprises strainer tightening device (19,21) and strainer apparatus for correcting (5,11), strainer tightening device (19,21) is installed in upset place of upper and lower strainer respectively, strainer apparatus for correcting (5,11) is contained in the backward position of upper and lower strainer after separately respectively, at the discharge end of upper and lower strainer cleaning shoe (10) is housed respectively also.
8, sludge concentration and dewatering machine according to claim 4, it is characterized in that: the syringe pipe (4,17,20) of water spray circulation device bridges respectively and does not carry the top at mud position at pre-dehydration tube (3) and upper and lower strainer (7,12), and filtrate collection box (14) also is housed below single squeeze roll.
9, according to claim 2 or 5 described sludge concentration and dewatering machines, it is characterized in that: the conveying impeller (3-4) in the pre-dehydration tube (3) is not for there being the axle volution, the height and the helix angle of impeller are successively decreased from the mud inlet end to the mud outlet end successively, and the length of impeller is less than pre-dehydration tube length.
10, sludge concentration and dewatering machine according to claim 3, it is characterized in that: chute (18) is contained in the top of strainer (7) feed end, the chute upper end is corresponding with the mud outlet end of pre-dehydration tube (3), movably grid distributor (18-1) is housed on the chute (18), there is distribution pawl (18-2) the grid distributor lower end, chute (18) both sides, lower end are fixed with splash pan (18-3), and measuring apparatus (18-4) is housed between two splash pans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212781 CN2538801Y (en) | 2002-02-08 | 2002-02-08 | Mud concentration dewatering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212781 CN2538801Y (en) | 2002-02-08 | 2002-02-08 | Mud concentration dewatering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2538801Y true CN2538801Y (en) | 2003-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212781 Expired - Fee Related CN2538801Y (en) | 2002-02-08 | 2002-02-08 | Mud concentration dewatering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2538801Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255001B (en) * | 2005-04-14 | 2011-07-20 | 株式会社石垣 | Differential velocity rotary concentrator and sludge concentration method thereof |
| CN101797451B (en) * | 2010-02-24 | 2011-09-21 | 无锡达尼智能科技有限公司 | Roll immersed membrane capillary sludge deep dehydrator |
| CN102992578A (en) * | 2012-12-28 | 2013-03-27 | 湖北君集水处理有限公司 | Sludge thickening and dehydration system |
| CN104591518A (en) * | 2014-12-31 | 2015-05-06 | 广东开源环境科技有限公司 | Sludge deep treatment equipment |
| CN106116097A (en) * | 2016-08-18 | 2016-11-16 | 华南理工大学 | A kind of deep dehydration device for sludge and method |
| CN106865949A (en) * | 2017-03-25 | 2017-06-20 | 芜湖海容自动化科技有限公司 | A kind of water process sludge piece-rate system |
| CN107671067A (en) * | 2017-11-13 | 2018-02-09 | 重庆洁邦电器有限公司 | It is a kind of that there is the cleaning machine for increasing journey cyclic water tank |
| CN110981148A (en) * | 2019-12-31 | 2020-04-10 | 安徽企路石工程技术开发有限公司 | Mud-water separation method |
| CN112745000A (en) * | 2021-01-21 | 2021-05-04 | 黄河水利职业技术学院 | Industrial sludge recycling treatment system and treatment method thereof |
| CN114380479A (en) * | 2021-12-30 | 2022-04-22 | 江苏博一环保科技有限公司 | Fold spiral shell formula sludge dewatering system |
| CN117585883A (en) * | 2024-01-19 | 2024-02-23 | 苏州和青环保科技有限公司 | Sludge press filtration dewatering equipment |
-
2002
- 2002-02-08 CN CN 02212781 patent/CN2538801Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255001B (en) * | 2005-04-14 | 2011-07-20 | 株式会社石垣 | Differential velocity rotary concentrator and sludge concentration method thereof |
| CN101797451B (en) * | 2010-02-24 | 2011-09-21 | 无锡达尼智能科技有限公司 | Roll immersed membrane capillary sludge deep dehydrator |
| CN102992578A (en) * | 2012-12-28 | 2013-03-27 | 湖北君集水处理有限公司 | Sludge thickening and dehydration system |
| CN104591518A (en) * | 2014-12-31 | 2015-05-06 | 广东开源环境科技有限公司 | Sludge deep treatment equipment |
| CN104591518B (en) * | 2014-12-31 | 2016-08-17 | 广东开源环境科技有限公司 | Sludge deep processing equipment |
| CN106116097A (en) * | 2016-08-18 | 2016-11-16 | 华南理工大学 | A kind of deep dehydration device for sludge and method |
| CN106116097B (en) * | 2016-08-18 | 2023-08-22 | 华南理工大学 | Deep dehydration equipment and method for sludge |
| CN106865949B (en) * | 2017-03-25 | 2020-03-24 | 广东飞南资源利用股份有限公司 | Sludge separation system for water treatment |
| CN106865949A (en) * | 2017-03-25 | 2017-06-20 | 芜湖海容自动化科技有限公司 | A kind of water process sludge piece-rate system |
| CN107671067A (en) * | 2017-11-13 | 2018-02-09 | 重庆洁邦电器有限公司 | It is a kind of that there is the cleaning machine for increasing journey cyclic water tank |
| CN110981148A (en) * | 2019-12-31 | 2020-04-10 | 安徽企路石工程技术开发有限公司 | Mud-water separation method |
| CN112745000A (en) * | 2021-01-21 | 2021-05-04 | 黄河水利职业技术学院 | Industrial sludge recycling treatment system and treatment method thereof |
| CN112745000B (en) * | 2021-01-21 | 2021-07-30 | 黄河水利职业技术学院 | Industrial sludge recycling treatment system and treatment method thereof |
| CN114380479A (en) * | 2021-12-30 | 2022-04-22 | 江苏博一环保科技有限公司 | Fold spiral shell formula sludge dewatering system |
| CN117585883A (en) * | 2024-01-19 | 2024-02-23 | 苏州和青环保科技有限公司 | Sludge press filtration dewatering equipment |
| CN117585883B (en) * | 2024-01-19 | 2024-04-16 | 苏州和青环保科技有限公司 | Sludge press filtration dewatering equipment |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |