CN105107251A - Belt filter press for sludge dehydration - Google Patents
Belt filter press for sludge dehydration Download PDFInfo
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- CN105107251A CN105107251A CN201510609589.XA CN201510609589A CN105107251A CN 105107251 A CN105107251 A CN 105107251A CN 201510609589 A CN201510609589 A CN 201510609589A CN 105107251 A CN105107251 A CN 105107251A
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- pressure
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- roller
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- sludge dewatering
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Abstract
The invention discloses a belt filter press for sludge dehydration. The belt filter press comprises an upper filter belt, a lower filter belt, a frame, a pressing area, a rinsing device, a rectification and protection device, a synchronous tensioning device, a transmission and unloading device, an electric connection box, a pneumatic control system, and a uniform material distributing device (6), wherein the pressing area comprises a pre-pressing arrangement area (8), a low-pressure pressing area (3) and a high-pressure pressing area (2); the lower filter belt is connected with the upper filter belt in the pre-pressing arrangement area (8) after passing through the uniform material distributing device (6), and then the upper and lower filter belts pass through the low-pressure pressing area (3) and the high-pressure pressing area (2), and are separated from the transmission and unloading device. The belt filter press is novel high-pressure belt press dehydration equipment for deep dehydration of sludge of which the moisture content is about 80 percent, is compact in structure, reliable and durable, and can be effectively butted with the conventional equipment of a belt (concentration) filter press, a centrifugal machine and the like in a sewage treatment plant.
Description
Technical field
The present invention relates to deeply dehydrating sludge process, make a kind of New Type of Sludge Dewatering belt filter press that moisture percentage in sewage sludge is lower.
Background technology
The sewage treatment plant of numerous domestic all can produce a large amount of mud every day, and the main dehydration equipment adopted at present has belt (concentrating) filter press, centrifuge, chamber-type press filter etc.Moisture percentage in sewage sludge after traditional processed, generally about 80%, could meet environmental requirement after the mud of this moisture content must carry out subsequent treatment.
What current moisture content adopted usually in the subsequent treatment of the mud of about 80% is landfill, concentrates the method such as deep dehydration.
Sludge landfill without harmless treatment may cause secondary pollution to environment and underground water, so this way is not harmless, a sustainable method.
The Treatment of Sludge expense spending that concentrated Deep dehydration treatment method can increase very large one of Sewage Plant is carried out in mud outward transport, the mud of moisture content about 80% also has certain sewage to ooze out and mobility in addition, be easy to during Automobile Transportation shed water clock, cause secondary pollution to the environment along road.Current advanced treatment process of sludge mainly adopts chamber-type press filter to carry out squeezing process to the mud after modulation, and this equipment has the defects such as floor space is large, investment is large, auxiliary equipment is many, integrated level is high, interval work, maintaining is difficult, spare part expense is large.
Existing producer adopts the belt filter press through simple refit to carry out deep dehydration to the mud of moisture content about 80% at present, owing to being subject to the restriction of squeeze pressure, reduction moisture content that generally can only be limited, sludge quality simultaneously after modulation treatment changes, belt filter press through simple refit cannot effectively adapt to, have that fluctuation of service, cloth mud are uneven, strainer is easy to shortcomings such as damaging, maintenance capacity is large, the normal instructions for use of user cannot be met.
In prior art, such as patent " belt filter press of the strong mud of ultra-fine viscosity ", publication number: 10220519A; Patent " belt sludge treatment press filter ", publication number: 102206029A, prior art discloses the General Principle that belt filter press relates to band filter structure.
As shown in Figure 8, it comprises frame, frame is provided with electric cabinet, pneumatic control case, the top of its structural feature frame is for being provided with feed arrangement, the side of frame is provided with upper and lower a pair of identical gear, gear is driven by motor, the axle of a pair gear is respectively arranged with driven roller, lower driven roller; Upper strainer on upper driven roller successively by the feed arrangement above frame, gravity dewatering zone, deviation correcting device, walk around pony press, pressure roller after, get back on driven roller; Lower filter belt on lower driven roller is walked around intermediate calender rolls, deviation correcting device, is overlapped at the same strainer of pony press, then after pressure roller, gets back to lower press; The inside of machine is provided with water receiving tank, and the bottom of water receiving tank is provided with drainpipe; Upper scraping plate, lower scraping plate is respectively arranged with at upper driven roller, lower driven roller place.
The squeeze force of its dehydration is supplied to the tension force of strainer from tensioning apparatus, be subject to the restriction of mud and strainer physical property, generally can only be reduced to about 80% by the moisture percentage in sewage sludge after this kind of device processes.The said equipment of prior art cannot carry out deep dehydration to the mud that moisture content is about 80%.
Summary of the invention
For the deficiencies in the prior art, goal of the invention of the present invention be solve moisture content a large amount of at present about 80% the deep dehydration key processing equipment problem of mud, while meeting environmental requirement, make equipment run more stable, investment is lower, it is more convenient to safeguard.
In order to realize foregoing invention object, the technical solution used in the present invention is: a kind of sludge dewatering belt press filtering machine, comprises strainer, frame 1, pressed zone, flusher 4, correction and protective device 5, synchronous tensioning device 7, transmission and device for discharging 11, electric circuit connection container 12, atmospheric control 14, described strainer, pressed zone, flusher 4, correction and protective device 5, synchronous tensioning device 7, transmission and device for discharging 11, electric circuit connection container 12, atmospheric control 14 is all installed in described frame 1, and described strainer divides strainer and lower filter belt, described flusher 4, correction and protective device 5 and synchronous tensioning device 7 provide flushing respectively at described upper lower filter belt, correction and tension, it is characterized in that: also comprise uniform distribution device 6, described pressed zone comprises precompressed Distribution Area 8, low pressure pressed zone 3 and high-pressure compressing district 2, described lower filter belt by after described uniform distribution device 6 with described upper strainer after described precompressed Distribution Area 8 goes out to converge successively by described low pressure pressed zone 3 and high-pressure compressing district 2, go out to be separated in described transmission and device for discharging 11.
Above-mentioned sludge dewatering belt press filtering machine; it is further characterized in that: described high-pressure compressing district 2 is one group or many groups independently single high-pressure modular composition; described single high-pressure modular comprises cylinder 201, geo-stationary orbit 202, squeezing roller 203, limit protection device 204, pressure-bearing roller 206, synchronous frame 207; described squeezing roller 203 is corresponding with described pressure-bearing roller about 206 to be arranged; described cylinder 201 provides required squeeze pressure, and described geo-stationary orbit 202 is connected described cylinder 201 and squeezing roller 203 with synchronous frame 207.The single high-pressure modular in described high-pressure compressing district 2 is identical with the single low-voltage module structure of described low pressure pressed zone 3.
Above-mentioned sludge dewatering belt press filtering machine, it is further characterized in that: described uniform distribution device 6 is made up of Xian Liao mechanism 612, feed bin 606, material tidying mechanism 605, material-feeding mechanism 609, arrange at regular intervals between described Xian Liao mechanism 612 and described strainer, the rotary motion of described Xian Liao mechanism 612 is relative with the horizontal movement of described strainer and go, described material tidying mechanism 605 moves back and forth, be uniformly distributed by the mud dropped in described feed bin 606 by reason claw tooth, described material-feeding mechanism 609 is with brambles by two and distribute roll forms in relative rotation.
Above-mentioned sludge dewatering belt press filtering machine, it is further characterized in that: described flusher 4 is made up of water inlet pipe 401, nozzle 402, seal bootr 403, is provided with many covers, rinses strainer up and down.Described correction and protective device 5 are provided with induction installation signalling generator, correction reversal valve, cylinder piston rod and deviation rectification roller, when strainer sideslip by correction reversal valve, cylinder piston rod and deviation rectification roller, make it to get back to normal position; When the one-sided running deviation value of strainer is greater than setting value, by induction installation signalling generator, warning, system-down.Flushing water and the water filtered down are also concentrated enters sewage network for collecting also to comprise filtrate collecting tank 9.The pressure-bearing roller in described high-pressure compressing district 2 and the pressure-bearing roller of described low pressure pressed zone 3 form bearing roller system 10 jointly, for supporting the effect of strainer, mud cake, support the pressure of pressed zone.The coated abrasive rubber layer of live-roller outer surface of described transmission and device for discharging 11, to increase coefficient of friction; The synchronous of upper lower filter belt is realized by synchromesh gear, and provides power for the running of upper lower filter belt, and live-roller is provided with stripper.
Beneficial effect: the mud that is about 80% to moisture content of the present invention carries out the belt-type squeezing-dewatering equipment of the novel high-pressure of deep dehydration, there is compact conformation, reliability and durability feature simultaneously, can realize continuous operation, simple to operate, effectively can dock with sewage treatment plant's equipment such as existing belt (concentrating) filter press, centrifuge etc., the feature such as floor space is little, scrap build small investment, disposal cost are low and energy consumption is low.The invention of this equipment successfully will produce larger economy and social value.
Accompanying drawing explanation
Fig. 1 is the press filtering machine complete machine structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the complete machine structure side view of the embodiment of the present invention.
In figure: 1, frame, 2, high-pressure compressing district, 3, low pressure pressed zone; 4, flusher, 5, correction and protective device, 6, uniform distribution device; 7, synchronous tensioning device; 8, precompressed Distribution Area, 9, filtrate collecting tank, 10, bearing roller system; 11, transmission and device for discharging; 12, electric circuit connection container, 13, protected enclosure, 14, atmospheric control.
Fig. 3 is the high-pressure compressing plot structure schematic diagram of the embodiment of the present invention.
In figure: 201, cylinder, 202, geo-stationary orbit, 203, squeezing roller, 204, limit protection device, 205, wait to squeeze mud, 206, pressure-bearing roller, 207, synchronous frame.
Fig. 4 is the flusher structural representation of the embodiment of the present invention.
In figure: 401, water inlet pipe, 402, nozzle, 403, seal bootr.
Fig. 5 is the uniform distribution device structure chart of the embodiment of the present invention.
In figure, 601, mounting bracket, 602, Rocker arm-motor, 603, rocker-arm link device, 604, charging aperture, 605, material tidying mechanism, 606, feed bin, 607, wheel chain wheels, 608, black box, 609, material-feeding mechanism, 610, strainer, 611, cloth motor, 612, Xian Liao mechanism.
Fig. 6, Fig. 7 are the uniform distribution device operation principle schematic diagram of the embodiment of the present invention.
In figure, 612, Xian Liao mechanism, 606, feed bin, 605, material tidying mechanism, 609, material-feeding mechanism.
Fig. 8 is belt filter press structural representation of the prior art.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
The sludge dewatering belt press filtering machine of the present embodiment, adopt the shearing uniform distribution mechanism of new structure and many groups, high pressure, roller arrangement mode to pressure combination, and there is adjustable squeeze pressure, to arrange in pairs or groups the structural designs such as two-sided flushing, band reaction type correction, strainer synchronous tension, shaft-mounted driving, high strength frame simultaneously, a kind of novel belt-type squeezing-dewatering machine of formation.Refer to equipment complete machine structure schematic diagram as shown in Figure 1 and Figure 2.
Parts 1: frame
The carrier of a complete set of equipment, for equipment provides the support of high strength to ensure, other all parts are all arranged in frame.
Parts 2: high-pressure compressing district (core component)
These parts can be 1 group or organize independently high-pressure modular (according to the increase and decrease of different sludge qualities) more, each module can be supplied to separately the very high squeeze pressure of mud, make that the water of its inside is as much as possible to be squeezed out, reduce moisture content of the cake further.The moisture content be applicable to can be obtained by the adjustment of pressure.
As shown in Figure 3, be single high-pressure modular schematic diagram.
Parts in figure:
201, cylinder: required squeeze pressure is provided.
202, geo-stationary orbit: ensure cylinder upper and lower time synchronous.
203, squeeze roller: apply squeeze force, when strainer joint or have hard foreign matter by time can rotate in certain angle and avoid, play and protect strainer effect.
204, limit protection: protection strainer effect.
205, mud to be squeezed.
206, bearing roller system: support during squeezing is provided.
207, synchronous frame: ensure that squeeze force evenly applies in mud width range.
Parts 3, low pressure pressed zone (core component)
These parts can be 1 group or organize independently low-voltage module (according to the increase and decrease of different sludge qualities) more, each module can provide lower squeeze pressure to make its preliminary hydro-extraction to mud separately, and arrange inner mud to suitable proterties, the high-pressure compressing in later stage can be born.Mud of different nature can be adapted to by the adjustment of pressure.
Low-voltage module structure and high-pressure modular are substantially identical, just low than high-pressure modular on stressed setting.
The present embodiment arranges high-pressure modular and the low-voltage module example of each two groups respectively.
Parts 4, flusher
Flusher is made up of water inlet pipe 401, nozzle 402, seal bootr 403 etc., totally four covers.As shown in Figure 4.In the equipment course of work, 2 tunnels or more can be selected to have the flushing line of certain pressure, make lower filter belt clean up regeneration, ensure next the normal work circulated.
Parts 5, correction and protective device
When strainer sideslip, induction installation sender, corresponding reversal valve commutation in correction pneumatic circuit, cylinder piston rod action, deviation rectification roller is angled with strainer traffic direction, thus correction strainer sideslip, make it to get back to normal position.When deviation correcting device is malfunctioning, when the one-sided running deviation value of strainer is greater than setting value, then induction installation sender, system-down, warning.
Parts 6, uniform distribution device (critical component)
These parts are the critical component of this equipment, as illustrated in figs. 5-7, are the schematic diagram of uniform distribution device.
Fig. 5 is uniform distribution device structure chart.
Parts in Fig. 5:
601, mounting bracket: play and install the effect of supports cloth materials device.
602, Rocker arm-motor: for rocker-arm link provides driving.
603, rocker-arm link device: reciprocating device is provided.
604, charging aperture: mud enters feed bin by this mouth.
605, material tidying mechanism: material tidying mechanism can move reciprocatingly, is responsible for being distributed to the gamut of feed bin uniformly by dropping on the middle mud of feed bin and having the function preventing the blocking of mud bridge formation by reason claw tooth.
606, feed bin: the casing storing mud.
607, wheel chain wheels: connect Xian Liao mechanism and material-feeding mechanism running.
608, black box: play the effect preventing mud and dust from leaking outside.
609, material-feeding mechanism: material-feeding mechanism is with brambles by 2 and distribute roll forms in relative rotation, and mud is smashed and is distributed to uniformly on strainer by primary responsibility.
610, strainer: the carrier of Treatment of Sludge.
611, cloth motor: be limited and expect that mechanism and material-feeding mechanism running provide driving.
612, Xian Liao mechanism: be responsible for mud being arranged smooth, prevent bulk mud from entering strainer inside, play the effect of protection strainer.
Fig. 6, Fig. 7 are uniform distribution device operation principle schematic diagram.
In figure, mud enters in feed bin 606 by charging aperture, be responsible for by reason claw tooth the gamut mud dropped in the middle of feed bin being distributed to uniformly feed bin in the reciprocating motion that material tidying mechanism 605 provides at Rocker arm-motor and rocker-arm link device, simultaneously material-feeding mechanism 609 makes to be realized relatively rotating by the distribute roll of 2 band brambles under the drive of cloth motor and wheel chain wheels, mud is smashed and is distributed to uniformly on strainer, mud is followed strainer and is moved to place of Xian Liao mechanism 612 subsequently, along with rugged mud arranges smooth by the reverse rotation of Xian Liao mechanism 612, can prevent the mud of bulk from entering strainer inside simultaneously, play the effect of protection strainer.
Parts 7, synchronous tensioning device
The effect of synchronous tensioning device is the upper and lower strainer of tensioning, applies certain pressure make it to obtain precompressed arrangement to filter sludge.On filter pressing section, lower filter belt adopts four cylinder synchronous tensions, and upper lower filter belt tensioning pressure can adjust respectively by air pressure regulator.
Parts 8, precompressed Distribution Area
Precompressed Distribution Area mainly makes mud predrainage, makes it to be formed the mud cake of road low pressure squeezing after allowing.
Parts 9, filtrate collecting tank
Main Function is collect flushing water to enter sewage network with the water filtered down is also concentrated.
Parts 10, bearing roller system
The pressure-bearing roller in high-pressure compressing district 2 and the pressure-bearing roller of low pressure pressed zone 3 form bearing roller system 10 jointly, and these parts play the effect supporting strainer, mud cake, support the high pressure of squeezing system.
Parts 11, transmission and device for discharging
The coated abrasive rubber layer of live-roller outer surface, to increase coefficient of friction.The synchronous of upper lower filter belt is realized by synchromesh gear.For the running of strainer provides power.
Upper and lower strainer all arranges device for discharging at main drive roller place, for the filter cake after removal dehydration, and outside stripper discharge machine.
Parts 12, electric circuit connection container
For the drive motors of complete machine, executing agency and protection circuit provide wiring carrier.
Parts 13, protected enclosure
Play the function improving operating environment, proterctive equipment and operator safety, adopt gate-type handle switch mode, easy to operate.And often needing cleaning and safeguarding that the case place at position is provided with assistance opening device.
Parts 14, atmospheric control
There is source of the gas process, lubrication, pressure regulation and commutation element, for the executive component such as strainer tensioning, correction, squeezing of complete machine provides qualified stable source of the gas.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change that technical scheme basis is done, all falls within scope; The technology that the present invention does not relate to all is realized by prior art.
Claims (10)
1. a sludge dewatering belt press filtering machine, comprises strainer, frame (1), pressed zone, flusher (4), correction and protective device (5), synchronous tensioning device (7), transmission and device for discharging (11), electric circuit connection container (12), atmospheric control (14), described strainer, pressed zone, flusher (4), correction and protective device (5), synchronous tensioning device (7), transmission and device for discharging (11), electric circuit connection container (12), atmospheric control (14) is all installed in described frame (1), and described strainer divides strainer and lower filter belt, described flusher (4), correction and protective device (5) and synchronous tensioning device (7) provide flushing respectively at described upper lower filter belt, correction and tension, it is characterized in that: also comprise uniform distribution device (6), described pressed zone comprises precompressed Distribution Area (8), low pressure pressed zone (3) and high-pressure compressing district (2), described lower filter belt by described uniform distribution device (6) afterwards with described upper strainer after described precompressed Distribution Area (8) goes out to converge successively by described low pressure pressed zone (3) and high-pressure compressing district (2), go out to be separated at described transmission and device for discharging (11).
2. sludge dewatering belt press filtering machine according to claim 1, it is characterized in that: described high-pressure compressing district (2) is one group or many groups independently single high-pressure modular composition, described single high-pressure modular comprises cylinder (201), geo-stationary orbit (202), squeezing roller (203), limit protection device (204), pressure-bearing roller (206), synchronous frame (207), described squeezing roller (203) is arranged with described pressure-bearing roller (206) is corresponding up and down, described cylinder (201) provides required squeeze pressure, described geo-stationary orbit (202) is connected described cylinder (201) and squeezing roller (203) with synchronous frame (207).
3. sludge dewatering belt press filtering machine according to claim 1; it is characterized in that: described low pressure pressed zone (3) is one group or many groups independently single low-voltage module composition; described single low-voltage module comprises cylinder, geo-stationary orbit, squeezing roller, limit protection device, pressure-bearing roller, synchronous frame; described squeezing roller is arranged with described pressure-bearing roller is corresponding up and down; described cylinder provides required squeeze pressure, and described geo-stationary orbit is connected described cylinder and squeezing roller with synchronous frame.
4. the sludge dewatering belt press filtering machine according to Claims 2 or 3, is characterized in that: the single high-pressure modular of described high-pressure compressing district (2) is identical with the single low-voltage module structure of described low pressure pressed zone (3).
5. sludge dewatering belt press filtering machine according to claim 1, it is characterized in that: described uniform distribution device (6) is by Xian Liao mechanism (612), feed bin (606), material tidying mechanism (606), material-feeding mechanism (609) forms, arrange at regular intervals between described Xian Liao mechanism (612) and described strainer, the rotary motion of described Xian Liao mechanism (612) is relative with the horizontal movement of described strainer and go, described material tidying mechanism (605) moves back and forth, by reason claw tooth, the mud dropped in described feed bin (606) is uniformly distributed, described material-feeding mechanism (609) is with brambles by two and distribute roll forms in relative rotation.
6. the sludge dewatering belt press filtering machine according to claim 2,3 or 5, it is characterized in that: described flusher (4) is made up of water inlet pipe (401), nozzle (402), seal bootr (403), be provided with many covers, rinse strainer up and down.
7. the sludge dewatering belt press filtering machine according to claim 2,3 or 5, it is characterized in that: described correction and protective device (5) are provided with induction installation signalling generator, correction reversal valve, cylinder piston rod and deviation rectification roller, when strainer sideslip by correction reversal valve, cylinder piston rod and deviation rectification roller, make it to get back to normal position; When the one-sided running deviation value of strainer is greater than setting value, by induction installation signalling generator, warning, system-down.
8. the sludge dewatering belt press filtering machine according to claim 2,3 or 5, is characterized in that: flushing water and the water filtered down are also concentrated enters sewage network for collecting also to comprise filtrate collecting tank (9).
9. the sludge dewatering belt press filtering machine according to claim 2,3 or 5, it is characterized in that: the pressure-bearing roller of described high-pressure compressing district (2) and the pressure-bearing roller of described low pressure pressed zone (3) form bearing roller system (10) jointly, for supporting the effect of strainer, mud cake, support the pressure of pressed zone.
10. the sludge dewatering belt press filtering machine according to claim 2,3 or 5, is characterized in that: the coated abrasive rubber layer of live-roller outer surface of described transmission and device for discharging (11), to increase coefficient of friction; The synchronous of upper lower filter belt is realized by synchromesh gear, and provides power for the running of upper lower filter belt, and live-roller is provided with stripper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510609589.XA CN105107251B (en) | 2015-09-22 | 2015-09-22 | Sludge dewatering belt press filtering machine |
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| CN201510609589.XA CN105107251B (en) | 2015-09-22 | 2015-09-22 | Sludge dewatering belt press filtering machine |
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| CN105107251A true CN105107251A (en) | 2015-12-02 |
| CN105107251B CN105107251B (en) | 2016-12-07 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477923A (en) * | 2016-01-29 | 2016-04-13 | 威海丰泰新材料科技股份有限公司 | Rapid carbon separation device for sewage treatment |
| CN108147641A (en) * | 2016-12-05 | 2018-06-12 | 广州绿鼎环保设备有限公司 | A kind of sludge dewatering equipment and mud dewatering method |
| CN110117147A (en) * | 2019-06-20 | 2019-08-13 | 成都颂源环保科技有限公司 | A kind of continuous deep dehydration equipment |
| CN112026234A (en) * | 2020-08-07 | 2020-12-04 | 莱州洁宇机械设备有限公司 | Domestic waste extrusion mechanism |
| CN112142292A (en) * | 2019-06-28 | 2020-12-29 | 成都颂源环保科技有限公司 | Continuous deep dehydration all-in-one machine and deep dehydration process |
| CN114225520A (en) * | 2021-12-09 | 2022-03-25 | 山西瑞光热电有限责任公司 | Vacuum belt dehydrator |
| CN114702224A (en) * | 2022-04-11 | 2022-07-05 | 秦皇岛嘉易科技开发有限公司 | Rolling type self-adaptive sludge high-pressure dehydration process and device |
| CN116282814A (en) * | 2023-05-18 | 2023-06-23 | 长春市城建维护集团股份有限公司 | Environment-friendly convenient sludge dewatering machine |
| CN116773277A (en) * | 2023-08-21 | 2023-09-19 | 成都亿联云创科技有限公司 | Smart city sewage environment monitoring and processing device based on Internet of things |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477923A (en) * | 2016-01-29 | 2016-04-13 | 威海丰泰新材料科技股份有限公司 | Rapid carbon separation device for sewage treatment |
| CN108147641A (en) * | 2016-12-05 | 2018-06-12 | 广州绿鼎环保设备有限公司 | A kind of sludge dewatering equipment and mud dewatering method |
| CN110117147A (en) * | 2019-06-20 | 2019-08-13 | 成都颂源环保科技有限公司 | A kind of continuous deep dehydration equipment |
| CN112142292A (en) * | 2019-06-28 | 2020-12-29 | 成都颂源环保科技有限公司 | Continuous deep dehydration all-in-one machine and deep dehydration process |
| CN112026234A (en) * | 2020-08-07 | 2020-12-04 | 莱州洁宇机械设备有限公司 | Domestic waste extrusion mechanism |
| CN114225520A (en) * | 2021-12-09 | 2022-03-25 | 山西瑞光热电有限责任公司 | Vacuum belt dehydrator |
| CN114702224A (en) * | 2022-04-11 | 2022-07-05 | 秦皇岛嘉易科技开发有限公司 | Rolling type self-adaptive sludge high-pressure dehydration process and device |
| CN114702224B (en) * | 2022-04-11 | 2024-04-19 | 秦皇岛嘉易科技开发有限公司 | Rolling type self-adaptive sludge high-pressure dehydration process and device |
| CN116282814A (en) * | 2023-05-18 | 2023-06-23 | 长春市城建维护集团股份有限公司 | Environment-friendly convenient sludge dewatering machine |
| CN116282814B (en) * | 2023-05-18 | 2023-08-18 | 长春市城建维护集团股份有限公司 | Environment-friendly convenient sludge dewatering machine |
| CN116773277A (en) * | 2023-08-21 | 2023-09-19 | 成都亿联云创科技有限公司 | Smart city sewage environment monitoring and processing device based on Internet of things |
| CN116773277B (en) * | 2023-08-21 | 2023-10-31 | 成都亿联云创科技有限公司 | Smart city sewage environment monitoring and processing device based on Internet of things |
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