CN202910061U - Real-time aquatic plant processing device - Google Patents
Real-time aquatic plant processing device Download PDFInfo
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- CN202910061U CN202910061U CN 201220550659 CN201220550659U CN202910061U CN 202910061 U CN202910061 U CN 202910061U CN 201220550659 CN201220550659 CN 201220550659 CN 201220550659 U CN201220550659 U CN 201220550659U CN 202910061 U CN202910061 U CN 202910061U
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- extrusion channel
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- aquatic plants
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- 230000018044 dehydration Effects 0.000 claims abstract description 35
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000010865 sewage Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 230000007423 decrease Effects 0.000 claims abstract 2
- 230000008859 change Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 41
- 241000196324 Embryophyta Species 0.000 description 34
- 241000169203 Eichhornia Species 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 240000008436 Ipomoea aquatica Species 0.000 description 1
- 244000207740 Lemna minor Species 0.000 description 1
- 235000006439 Lemna minor Nutrition 0.000 description 1
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 235000000365 Oenanthe javanica Nutrition 0.000 description 1
- 244000207867 Pistia stratiotes Species 0.000 description 1
- 235000006440 Pistia stratiotes Nutrition 0.000 description 1
- 235000001855 Portulaca oleracea Nutrition 0.000 description 1
- 235000001601 Sabal palmetto Nutrition 0.000 description 1
- 235000013559 Schnittsellerie Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Crushing And Pulverization Processes (AREA)
Abstract
本实用新型涉及一种即时处理水生植物的装置，其中：包括前期粉碎机构和螺旋式固液分离机，前期粉碎机构中的粉碎机位于搅拌池的顶部，搅拌装置中的搅拌叶片位于搅拌池的中轴线上，潜污泵的吸入口位于搅拌池的底部，输出口与螺旋式固液分离机中的进料口对接；螺旋式固液分离机包括含有进料口、脱水出口和残渣出口的挤压通道，挤压通道中设有匹配的螺旋推进叶片，挤压通道的直径由进料口端向残渣出口端逐渐减小呈锥状，螺旋推进叶片的中心轴由轴承支撑于挤压通道中，其一端由进料口端伸出挤压通道与驱动电机的输出轴连接，残渣出口上设有阻力调节装置，脱水出口位于挤压通道的下方。
The utility model relates to a device for immediate treatment of aquatic plants, which includes a pre-stage crushing mechanism and a spiral solid-liquid separator, the crushing machine in the pre-stage crushing mechanism is located at the top of a stirring pool, and the stirring blades in the stirring device are located at the top of the stirring pool On the central axis, the suction port of the submersible sewage pump is located at the bottom of the mixing tank, and the output port is connected to the feed port in the spiral solid-liquid separator; the spiral solid-liquid separator includes a feed port, a dehydration outlet and a residue outlet. Extrusion channel, the extrusion channel is equipped with a matching screw propulsion blade, the diameter of the extrusion channel gradually decreases from the feed inlet end to the residue outlet end in a tapered shape, and the central axis of the screw propulsion blade is supported by the bearing in the extrusion channel Among them, one end extends from the feed port to the extrusion channel and is connected to the output shaft of the drive motor, the residue outlet is provided with a resistance adjustment device, and the dehydration outlet is located below the extrusion channel.
Description
Technical field
The utility model relates to a kind of water plant by the equipment of fashion of extrusion dehydration, is a kind of key technology based on the residual body recycling of water pollution rehabilitation plant, belongs to field of environment protection.
Background technology
Be subjected to the impact of the discharging of industrial wastewater and sanitary sewage and widespread pollution from the overuse of fertilizers and pesticides in rural area, the eutrophication of water body increases the weight of increasingly, the body eutrophication important symbol is N in the water body, P content severe overweight, but simultaneously, if the nutrients such as nitrogen, phosphorus are used, to be huge nutrients resource storehouse, also can play the purpose that purifies water simultaneously.Water plant is primary productivity important in the Freshwater ecosystems, in recent years, utilize water plant to absorption, degraded or the fixation of nitrogen, phosphorus composition, realization is to the enrichment of polluted-water nitrogen phosphorus, plays simultaneously water body purification and repairs purpose, have small investment, risk little, do not produce the advantage such as secondary pollution, simultaneously by reasonably selecting, gather in the crops water plant, can also increase income, therefore, be subject to domestic and international researcher's extensive concern.
The effective way of phytoremediation polluted-water to the recycling based on the residual body of water body rehabilitation plant, yet, owing to be used for the water plant water content of polluted-water reparation generally all more than 90%, even up to more than 95%, if do not carry out processed, not only increased cost of transportation, bring difficulty also for the subsequent treatment of plant residue, therefore, to hydrophyte extrusion dehydration be the key of plant residue recycling.
Publication number is the patent of CN101235966, proposes first the water hyacinth of newly gathering to be carried out heat and floats, and enters subsequently centrifuge dewatering, then enters the squeezer dehydration, when the moisture content of the water hyacinth behind the press dewatering≤40%, directly sends into the incinerator burning; When moisture content＞40%, be introduced into drying machine and carry out drying, so that the moisture content of dried water hyacinth is 25%～40%, and then sends in the incinerator and burn.
Publication number is the patent of CN1806493,---making beating---dehydration---batching---pre-fermentation---finished product pack that propose a kind of method of utilizing water hyacinth to prepare mushroom class culture medium, this utility model prepares mushroom class culture medium take water hyacinth as raw material by following technique: gather.
Publication number is the patent of CN1439775, propose waterborne moveable and process the device of water hyacinth, the picking and processing equipment for plants of leaving the water, with material toggling flap, shearing saw disc, cleaning rotating disk, turning hoisting machine, shower nozzle, pulverizer, dewaterer sequential combination on known hull or car, after plants on water surface is sent to picking and processing equipment by the material toggling flap, plant waterborne sequentially enter cut cut, clean, carry, pulverizing, dehydration procedure.
Above patent is all mentioned the extrusion dehydration of water hyacinth, but the degree of dehydration that does not all propose dewatering efficiency and can reach, existing press type, strip-type and the solid-liquid separating machine such as spiral all can be used for the extrusion dehydration of water plant, but degree of dehydration is low to be difficult to reach the fertile needed water content of follow-up extruding slag muck and to be lower than 80% requirement, moreover, existing dehydration equipment dewatering efficiency is low, can not work continuously, and is difficult to adapt to extensive water plant dehydration needs.
Present situation for present water plant treatment facility, this case patent applicant had once proposed the utility application that name is called " the vertical submersible sewage pump of the dirty material of pumping high-concentration " on April 7th, 2011 to State Intellectual Property Office, and obtained patent right, the patent No. is 201120099096.3, and name is called the utility application of " a kind of pulverizer that is exclusively used in water plant ", and having obtained patent right, the patent No. is 201120099076.6.Provide convenience for processing water plant.
The utility model content
The purpose of this utility model is: utilize the actual needs that need to dewater to the high water plant of water content in the process in order to solve Resources of Aquatic Plants, a kind of equipment that is exclusively used in the water plant dehydration is provided.
The purpose of this utility model is achieved in that the device of a kind of instant processing water plant, it is characterized in that: comprise in earlier stage disintegrating mechanism and screw type solid-liquid separating machine, wherein:
Early stage, disintegrating mechanism comprised pulverizer, agitating device, stirring pool and submersible sewage pump, pulverizer is positioned at the top of stirring pool, stirring vane in the agitating device is positioned on the axis of stirring pool, the suction inlet of submersible sewage pump is positioned at the bottom of stirring pool, and delivery outlet docks with charging aperture in the screw type solid-liquid separating machine;
Screw type solid-liquid separating machine comprises the squeezing passage that contains charging aperture, dehydration outlet and residue outlet, be provided with the screw propulsion blade of coupling in the squeezing passage, the diameter of squeezing passage reduces to be taper by feed inlet end gradually to the residue port of export, the central shaft of screw propulsion blade by bearings in squeezing passage, the one end stretches out squeezing passage by feed inlet end and is connected with the output shaft of drive motors, the residue outlet is provided with drag regulator, and the dehydration outlet is positioned at the below of squeezing passage.
In the utility model: described pulverizer is the water plant pulverizer, and the discharging opening of water plant pulverizer directly communicates with stirring pool, and described submersible sewage pump is vertical submersible sewage pump; The bottom, pond at next-door neighbour's stirring pool edge is provided with a pitting, tilts to pitting radially at the bottom of the stirring pool pond, and the gradient of inclination is 15-20 °, and the pedestal of submersible sewage pump is arranged in pitting, and the suction inlet of submersible sewage pump is positioned at the lowest part at the bottom of the stirring pool pond; The diameter of squeezing passage feed inlet end is 38-50cm, and the length of squeezing passage is 100-130cm, and tapering is 1-20 °, and the inwall of squeezing passage is covered with stainless steel filtering net, and the below of squeezing passage is provided with the dehydration outlet of two axially-aligned at least.
In the utility model: described drag regulator is by being located at the hinge-type cover plate in the residue outlet and the mechanism that the hinge-type cover plate applies adjustable pressure being formed, the central shaft of described screw propulsion blade passes drag regulator and extends to the residue outlet, is furnished with scraper on the central shaft in the residue outlet.
In the utility model: described scraper is made of laterally zygomorphic cast iron sheet, is mounted by means of bolts on the central shaft.
In the utility model: the described mechanism that the hinge-type cover plate is applied adjustable pressure is comprised of resistance arm and pressure regulation weight, resistance arm forms leverage by fulcrum support, one end of resistance arm is butted on the hinge-type cover plate, another section is furnished with the pressure regulation weight, the pressure that bears by changing the position adjustments hinge-type cover plate of pressure regulation weight on resistance arm.
In the utility model: the described mechanism that the hinge-type cover plate is applied adjustable pressure is comprised of compression spring, spring base and setting-up screw, compression spring one end is butted on the hinge-type cover plate, the other end is butted on the spring base on the setting-up screw, change the position of spring base by setting-up screw, the pressure that bears by the prestressing force adjustable hinge formula cover plate that changes compression spring.
In the utility model: the described mechanism that the hinge-type cover plate is applied adjustable pressure is comprised of tension spring, screw rod and setting-up screw, tension spring one end is connected with the hinge-type cover plate, the other end is connected with the screw rod end, regulate tension spring length by setting-up screw, change tension spring to the pulling force of hinge-type cover plate.
The utility model has the advantage of: will salvage the aquatic plant residues of disembarkation after horizontal flail knife pulverizer is pulverized, under the immixture of mixer, adopt the instant mode of pulverizing instant suction extrusion dehydration, having overcome material leaves standstill floating crust in the process and causes the difficult problem that is difficult to aspirate, be convenient to work continuously, improved extrusion dehydration efficient.
Technology indicators of overall performance of the present invention is with the advantage of similar technology comparison: water plant is pulverized through horizontal flail knife pulverizer, under the immixture of mixer, adopt the instant mode of pulverizing instant suction extrusion dehydration, having overcome material leaves standstill floating crust in the process and causes the difficult problem that is difficult to aspirate, be convenient to work continuously, improved extrusion dehydration efficient.Moisture content is that 94.5% water hyacinth adopts the technology of the present invention to dewater, and can obtain the dehydration residue that moisture content is about 78%-82%, and the water hyacinth dry rate of recovery is greater than 65%, and dehydration rate is 76%-81%, unit processed ability can reach the 5-8 ton/hour.
Description of drawings
Fig. 1 is the structural representation of utility model embodiment.
Fig. 2 is a kind of structural representation of drag regulator.
Fig. 3 is the structural representation of another kind of drag regulator.
Fig. 4 is the structural representation of another drag regulator.
Among the figure: 1, pulverizer; 2, agitating device; 3, stirring pool; 4, submersible sewage pump; 5, squeezing passage; 6, residue outlet; 7, screw propulsion blade; 8, dehydration outlet; 9, charging aperture; 10, drive motors; 11, drag regulator; 12, hinge-type cover plate; 13, resistance arm; 14, pressure regulation weight, 15, scraper, 16, compression spring, 17, setting-up screw, 18, spring base, 19, tension spring, 20, screw rod.
The specific embodiment
Accompanying drawing discloses the concrete structure of the utility model embodiment without limitation, below in conjunction with accompanying drawing present embodiment is further described.
As seen from Figure 1, the utility model comprises in earlier stage disintegrating mechanism and screw type solid-liquid separating machine, wherein:
Early stage, disintegrating mechanism comprised pulverizer 1, agitating device 2, stirring pool 3 and submersible sewage pump 4, pulverizer 1 is positioned at the top of stirring pool 3, stirring vane in the agitating device 2 is positioned on the axis of stirring pool 3, the suction inlet of submersible sewage pump 4 is positioned at the bottom of stirring pool 3, and delivery outlet docks with charging aperture 9 in the screw type solid-liquid separating machine;
Screw type solid-liquid separating machine comprises the squeezing passage 5 that contains charging aperture 9, dehydration outlet 8 and residue outlet 6, be provided with the screw propulsion blade 7 of coupling in the squeezing passage 5, the diameter of squeezing passage 5 exports 6 ends by charging aperture 9 ends to residue and reduces gradually to be taper, tapering is 1-20 °, the central shaft of screw propulsion blade 7 by bearings in squeezing passage 5, the one end stretches out squeezing passage 5 by charging aperture 9 ends and is connected with the output shaft of drive motors 10, residue outlet 6 is provided with drag regulator 11, and dehydration outlet 8 is positioned at the below of squeezing passage 5.
In the present embodiment: described pulverizer 1 is the water plant pulverizer of No. 201120099076.6 patent disclosures, the discharging opening of water plant pulverizer directly communicates with stirring pool 3, and described submersible sewage pump 4 is the vertical submersible sewage pump of No. 201120099096.3 patent disclosures; The bottom, pond at next-door neighbour's stirring pool 3 edges is provided with a pitting, tilts to pitting radially at the bottom of stirring pool 3 ponds, and the gradient of inclination is 15-20 °, and the pedestal of submersible sewage pump 4 is arranged in pitting, and the suction inlet of submersible sewage pump 4 is positioned at the lowest part at the bottom of stirring pool 3 ponds.The diameter of squeezing passage 5 charging apertures 9 ends is 40cm, and the length of squeezing passage 5 is 100cm, and tapering is 8 °, and the dehydration outlet 8 of four axially-aligned in below of squeezing passage 5 all is furnished with filter screen in each dehydration outlet 8.
As seen from Figure 2, described drag regulator 11 is by being located at the hinge-type cover plate 12 in the residue outlet 6 and the mechanism that hinge-type cover plate 12 applies adjustable pressure being formed, the central shaft of described screw propulsion blade 7 passes drag regulator 11 and extends to residue outlet 6, is furnished with scraper 15 on the central shaft in the residue outlet 6; Described scraper 15 is made of laterally zygomorphic cast iron sheet, is mounted by means of bolts on the central shaft.
In the present embodiment: the described mechanism that hinge-type cover plate 12 is applied adjustable pressure is comprised of resistance arm 13 and pressure regulation weight 14, resistance arm 13 forms leverage by fulcrum support, one end of resistance arm 13 is butted on hinge-type cover plate 12, another section is furnished with pressure regulation weight 14, the pressure that bears by changing the position adjustments hinge-type cover plate 12 of pressure regulation weight 14 on resistance arm 13.
During implementation, described hinge-type cover plate 12 is applied the mechanism of adjustable pressure also can be as shown in Figure 3, formed by compression spring 16, spring base 18 and setting-up screw 17, compression spring 16 1 ends are butted on hinge-type cover plate 12, the other end is butted on the spring base 18 on the setting-up screw 17, change the position of spring bases 18 by setting-up screw 17, the pressure that bears by the prestressing force adjustable hinge formula cover plate 12 that changes compression spring 16.
During implementation, described hinge-type cover plate 12 is applied the mechanism of adjustable pressure can also be as shown in Figure 4, formed by tension spring 19, screw rod 20 and setting-up screw 17, tension spring 19 1 ends are connected with hinge-type cover plate 12, the other end is connected with screw rod 20 ends, regulate tension spring 19 length by setting-up screw 20, change the pulling force of 19 pairs of hinge-type cover plates 12 of tension spring.
Embodiment 2
With water plant or the aquatic plant residues of salvaging, carry material-uploading style to send into the entrance of pulverizer 1 in the disintegrating mechanism in early stage by artificial loading or conveyer belt, through pulverizing, stir, material is sent into the charging aperture 9 of screw type solid-liquid separating machine by submersible sewage pump 4, under the driving of drive motors 10, screw propulsion blade 7 promotion materials are moved to residue outlet 6 by the charging aperture 9 of squeezing passage 5, because the diameter of squeezing passage 5 reduces gradually, especially residue outlet 6 also is provided with cover plate 12, material at the volley and be extruded, extruding force can be regulated by drag regulator 11, the moisture that is squeezed out in the extrusion process is discharged by dehydration outlet 8, and the residue after the dehydration is discharged by residue outlet 6.
In the present embodiment: described water plant is water hyacinth and the residual body of water hyacinth in the eutrophic water body, the water hyacinth moisture content of salvaging is 94.5%, and after pulverizer 1 was pulverized, water hyacinth length was less than 5cm, disqualification rate is far below 10%, and material water cucurbit volume can reduce 68%-77%.
Substance recovery refers to after Separation of Solid and Liquid, the solid content that enters solid portion accounts for the percentage of the front total solid of Separation of Solid and Liquid, dehydration rate refers to that material accounts for the percentage that raw material always contains the water yield, common-used formula through the water yield that screw extrusion processed process removes out from initial material:
Wherein: the M1 front comminuting matter weight that represents to dewater;
The M2 rear residue weight that represents to dewater;
A% represent the to dewater moisture content of front comminuting matter;
B% represent the to dewater moisture content of residue.
Through calculating, adopt the instant instant extrusion dehydration mode of pulverizing, can obtain the dehydration residue that moisture content is about 78%-82%, the water hyacinth dry rate of recovery is greater than 65%, dehydration rate is 76%-81%, unit processed ability can reach the 5-8 ton/hour.
Water after the separation can be used for the anaerobic fermentation Biogas, natural pond liquid after the fermentation can be used as the high-quality fertilizer, as base manure or the promotion crop growth that topdresses, and the water hyacinth residue after separating can be used for the raw material of aquaculture ensilage, also can be used as the raw material of making flowers or nursery matrix, fertilizer, thereby the water plant harmless treatment that whole treatment process will be overflowed, and further realize turning waste into wealth, process the cost payout that rear value-added content of product remedies harmless treatment by improving, help to accelerate industrialization process.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220550659 CN202910061U (en) | 2012-10-25 | 2012-10-25 | Real-time aquatic plant processing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220550659 CN202910061U (en) | 2012-10-25 | 2012-10-25 | Real-time aquatic plant processing device |
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| CN202910061U true CN202910061U (en) | 2013-05-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909213A (en) * | 2012-10-25 | 2013-02-06 | 江苏省农业科学院 | Device for treating aquatic plants in real time and application of device |
| CN105689362A (en) * | 2016-03-11 | 2016-06-22 | 江苏维尔利环保科技股份有限公司 | Recycling device for organic matters of solid residues of organic garbage |
| CN110549666A (en) * | 2019-08-15 | 2019-12-10 | 南京清中环境技术有限公司 | Submerged plant residual body compression decrement device |
-
2012
- 2012-10-25 CN CN 201220550659 patent/CN202910061U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909213A (en) * | 2012-10-25 | 2013-02-06 | 江苏省农业科学院 | Device for treating aquatic plants in real time and application of device |
| CN105689362A (en) * | 2016-03-11 | 2016-06-22 | 江苏维尔利环保科技股份有限公司 | Recycling device for organic matters of solid residues of organic garbage |
| CN105689362B (en) * | 2016-03-11 | 2017-10-27 | 江苏维尔利环保科技股份有限公司 | Organic waste solid slag organic matter retracting device |
| CN110549666A (en) * | 2019-08-15 | 2019-12-10 | 南京清中环境技术有限公司 | Submerged plant residual body compression decrement device |
| CN110549666B (en) * | 2019-08-15 | 2022-03-04 | 南京清中环境技术有限公司 | Submerged plant residual body compression decrement device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151025 |
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| EXPY | Termination of patent right or utility model |