CN112807791A - Sewage treatment is with integrative equipment of filtration, dehydration - Google Patents
Sewage treatment is with integrative equipment of filtration, dehydration Download PDFInfo
- Publication number
- CN112807791A CN112807791A CN202110040889.6A CN202110040889A CN112807791A CN 112807791 A CN112807791 A CN 112807791A CN 202110040889 A CN202110040889 A CN 202110040889A CN 112807791 A CN112807791 A CN 112807791A
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- China
- Prior art keywords
- sewage
- cylinder
- piston disc
- blowdown
- outer shell
- Prior art date
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- 239000010865 sewage Substances 0.000 title claims abstract description 92
- 238000001914 filtration Methods 0.000 title claims abstract description 36
- 230000018044 dehydration Effects 0.000 title claims description 9
- 238000006297 dehydration reaction Methods 0.000 title claims description 9
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000010802 sludge Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
Abstract
The invention discloses filtering and dewatering integrated equipment for sewage treatment, which comprises an outer shell, a filter cylinder and a sewage discharge cylinder, wherein the filter cylinder is arranged in the outer shell; the filter cartridge is fixedly arranged in the outer shell, a sewage inlet pipe communicated with the inner cavity of the filter cartridge is arranged on the outer shell, and filter holes are formed in the side wall of the filter cartridge; the blowdown cylinder is fixed at the bottom of the filter cylinder and communicated with the filter cylinder; the inner side wall of the sewage discharging cylinder is provided with a piston disc in a sliding fit manner, the piston disc is provided with at least one sewage discharging flow channel, and the sewage discharging flow channel penetrates downwards from the upper end surface of the piston disc to the outer side wall of the piston disc; the peripheral side wall of the sewage discharging cylinder is provided with a sewage discharging pipe communicated with the inner cavity of the sewage discharging cylinder, and the piston disc can axially slide along the sewage discharging cylinder to enable the lower port of the sewage discharging flow passage to be communicated or disconnected with the sewage discharging pipe; the bottom end of the piston disc is provided with an elastic supporting piece which is used for supporting the piston disc to slide upwards through elasticity so as to disconnect the lower port of the sewage drainage flow channel from the sewage drainage pipe. The sewage treatment device can discharge sewage while filtering and treating sewage, and the sewage treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a filtering and dewatering integrated device for sewage treatment.
Background
Municipal sewage is mainly domestic sewage, a part of industrial wastewater and urban public sewage are mixed, the pollutant types are various, and a large-scale sewage treatment plant is generally required to be arranged. The sewage treatment generally needs to be carried out by the working procedures of flocculation, sedimentation, ionization, magnetic separation, filtration and the like. Apparatuses such as centrifugal filters, screen filters, and sludge driers are apparatuses frequently used in sewage treatment processes.
Filtration equipment among the prior art makes filtration efficiency reduce gradually along with the filth is at the inside deposit of filter screen, and the filth also is difficult to the clearance, bonds easily simultaneously and causes the filter screen to block up on the filter screen surface, leads to filtration equipment to need frequently to shut down the clearance filth, has not only reduced sewage treatment efficiency, has still caused the water waste.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a filtering and dewatering integrated device for sewage treatment.
The invention provides a filtering and dewatering integrated device for sewage treatment, which comprises an outer shell, a filter cylinder and a sewage discharge cylinder, wherein the filter cylinder is arranged in the outer shell; the filter cartridge is fixedly arranged in the outer shell, a sewage inlet pipe communicated with the inner cavity of the filter cartridge is arranged on the outer shell, filter holes are formed in the side wall of the filter cartridge, a drainage cavity is formed between the outer wall of the filter cartridge and the inner wall of the outer shell, and a drainage pipe communicated with the drainage cavity is arranged on the outer shell;
the blowdown cylinder is fixed at the bottom of the filter cylinder and communicated with the filter cylinder; the inner side wall of the sewage discharging cylinder is provided with a piston disc in a sliding fit manner, the piston disc is provided with at least one sewage discharging flow channel, and the sewage discharging flow channel penetrates downwards from the upper end surface of the piston disc to the outer side wall of the piston disc;
the peripheral side wall of the blowdown cylinder is provided with a blowdown pipe communicated with the inner cavity of the blowdown cylinder, the number of the blowdown pipes is the same as that of the blowdown flow passages, the positions of the inner ports of the blowdown pipes and the lower ports of the blowdown flow passages in the circumferential direction of the blowdown cylinder are the same, and the piston disc slides along the axial direction of the blowdown cylinder to enable the lower ports of the blowdown flow passages to be communicated or disconnected with the blowdown pipes;
the bottom end of the piston disc is provided with an elastic supporting piece which is used for supporting the piston disc to slide upwards through elasticity so as to disconnect the lower port of the sewage drainage flow channel from the sewage drainage pipe.
Preferably, a rotating shaft is coaxially and rotatably arranged in the filter cartridge, a scraper relatively fixed with the rotating shaft is arranged in the filter cartridge, and the scraper is attached to the inner side wall of the filter cartridge.
Preferably, the rotating shaft is coaxially and fixedly provided with a spiral conveying shaft, and the spiral blades of the spiral conveying shaft are in clearance fit with the inner side wall of the filter cartridge.
Preferably, sewage treatment with filtering, integrative equipment of dehydration, still including being used for driving pivot pivoted drive arrangement, drive arrangement includes the motor, the motor is installed in the frame, the shell body is installed in the frame, the pivot runs through to the shell body outside, motor output shaft passes through drive mechanism and is connected with the pivot transmission.
Preferably, the elastic supporting piece comprises a pressure spring and a guide rod, the guide rod is axially arranged at the bottom of the piston disc along the sewage discharging cylinder, and the pressure spring is sleeved on the guide rod.
Preferably, the bottom end of the guide rod penetrates through the lower portion of the outer shell, the guide rod can move up and down along the outer shell, a positioning nut is connected to the guide rod in a threaded mode, and the positioning nut is pressed at the bottom of the outer shell.
Preferably, the sewage treatment is with integrative equipment of filtration, dehydration, still include the backwash inlet tube of setting on the shell body, backwash inlet tube and drainage chamber intercommunication.
According to the integrated filtering and dewatering equipment for sewage treatment, the lower end of the filter cylinder is sealed through the piston disc in the sewage discharge cylinder, when the hydraulic pressure is increased due to sewage accumulation, the piston disc can descend to enable the sewage discharge flow channel to be communicated with the outside, so that the equipment can discharge sewage while filtering sewage, and the sewage treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a filtration and dehydration integrated equipment for sewage treatment according to the present invention;
fig. 2 is a schematic structural view of the filtering and dewatering integrated equipment in fig. 1 during sewage discharge.
Detailed Description
Referring to fig. 1-2, the present invention provides a filtering and dewatering integrated device for sewage treatment, which comprises an outer casing, a filter cartridge 4 and a drainage cartridge 5. Wherein, the shell body is preferred to be formed by outer barrel 1, upper end cap 2 and lower end cap 3, and upper end cap 2 and lower end cap 3 detachably install port and end opening on outer barrel 1.
Wherein, cartridge filter 4 fixed mounting is inside the shell body to cartridge filter 4 upper end is fixed with 2 lower extremes of upper end cover, is equipped with the sewage that is linked together with 4 inner chambers of cartridge filter on the upper end cover 2 of shell body and advances pipe 6, forms drainage chamber 7 between 4 outer walls of cartridge filter and the inner wall of shell body. The lateral wall of the filter cartridge 4 is provided with a filter hole, and the lateral wall of the outer cylinder 1 of the outer shell is provided with a drain pipe 8 communicated with the drain cavity chamber 7.
This sewage treatment is with filtering, integrative equipment of dehydration at the during operation, sewage enters pipe 6 by sewage and enters into cartridge filter 4 in, filters the back through cartridge filter 4, and mud is held back in cartridge filter 4, and the clear water that enters into among the drainage cavity 7 can be followed drain pipe 8 and is discharged.
Wherein, the blowdown section of thick bamboo 5 is fixed in cartridge filter 4 bottom to the blowdown section of thick bamboo 5 is linked together with cartridge filter 4, and the blowdown section of thick bamboo 5 is fixed in 3 upper ends of lower end cover.
The piston plate 9 is installed to 5 inside wall sliding fit of blowdown section of thick bamboo 5, is equipped with at least one blowdown runner 10 on the piston plate 9, and the blowdown runner 10 is run through to 9 lateral walls of piston plate by the piston plate 9 up end downwards.
The side wall of the periphery of the blowdown cylinder 5 is provided with a blowdown pipe 11 communicated with the inner cavity of the blowdown cylinder, the blowdown pipe 11 penetrates to the outside of the outer shell, the blowdown pipe 11 and the blowdown flow channel 10 are the same in quantity, and the inner port of the blowdown pipe 11 and the lower port of the blowdown flow channel 10 are the same in position in the circumferential direction of the blowdown cylinder 5, so that the lower port of the blowdown flow channel 10 can be communicated or disconnected with the blowdown pipe 11 by the piston disc 9 sliding along the axial direction of the blowdown cylinder 5.
As shown in fig. 2, when the piston plate 9 slides to a position where the lower port of the sewage flow passage 10 is at the same height as the inner port of the sewage pipe 11, the sewage pipes can be communicated with the sewage flow passage 10 in a one-to-one correspondence.
And the bottom end of the piston disc 9 is also provided with an elastic supporting piece which is used for supporting the piston disc 9 to slide upwards through elasticity so as to disconnect the lower port of the sewage flow channel 10 from the sewage discharge pipe 11.
This integrative equipment of filtration, dehydration for sewage treatment is at the filtration sewage in-process, because the mud in the cartridge filter 4 can be more and more to the filtration efficiency of filtration pore descends, can lead to the hydraulic pressure of piston dish 9 upper portion to increase gradually. In the initial stage of operation, the supporting elastic force of the elastic supporting member is enough to support the gravity of the piston disc 9 and the sewage hydraulic pressure in the filter cartridge 4. And along with pressure increase, the piston disc 9 can slide downwards under the action of pressure, thereby finally communicating the sewage flow passage 10 with the sewage pipe 11, and discharging the sludge accumulated in the filter cartridge 4 through the sewage flow passage 10 and the sewage pipe 11.
After the sludge is discharged, the hydraulic pressure on the upper part of the piston disc 9 is reduced, the piston disc 9 is reset again under the action of the elastic supporting piece, and the filtering treatment can be continued. Therefore, the equipment can carry out the work of filtering and discharging sewage at the same time under different shutdown states, and the efficiency of sewage treatment can be improved.
In one example of the invention, the elastic supporting piece comprises a pressure spring 12 and a guide rod 13, the guide rod 13 is arranged at the bottom of the piston disc 9 along the axial direction of the pollution discharge cylinder 5, and the pressure spring 12 is sleeved on the guide rod 13. The pressure spring 12 serves to support the piston disc 9 upwards and the guide rods 13 serve to maintain the position of the pressure spring 12.
The bottom end of the guide rod 13 penetrates through the lower end cover 3 of the outer shell, the guide rod 13 can move up and down along the lower end cover 3, the bottom of the guide rod 13 is in threaded connection with a positioning nut 14, and the positioning nut 14 is pressed at the bottom of the lower end cover 3. By adjusting the position of the positioning nut 14 on the guide rod 13, the stroke of the piston disc 9 can be adjusted.
According to one embodiment of the present invention, a rotating shaft 15 is coaxially and rotatably installed in the filter cartridge 4, a scraper 17 fixed relative to the rotating shaft 15 is installed in the filter cartridge 4, and the scraper 17 is attached to the inner side wall of the filter cartridge 4. The pivot 15 drive scraper 17 rotates and is used for striking off the mud of adhering to on the cartridge filter 4 inside wall, can prevent that cartridge filter 4 from leading to filtering sewage's efficiency seriously to descend because of blockking up, and simultaneously, the mud that will gather is scraped and is done benefit to mud and subsides to cartridge filter 4 bottom.
According to one embodiment of the present invention, a screw conveying shaft 16 is coaxially and fixedly mounted on the rotating shaft 15, and the screw blades of the screw conveying shaft 16 are in clearance fit with the inner side wall of the filter cartridge 4. In some examples, since the shaft 15 is also fixed with the scraper 17 relatively, the scraper 17 may be fixed on the outer edge of the spiral blade rigidly.
The spiral conveying shaft 16 is used for stirring the sewage and increasing the centrifugal force of the sewage, thereby improving the filtering efficiency; on the other hand, the screw conveying shaft 16 can provide a downward conveying force to convey the sludge to the bottom of the filter cylinder 4, so that the pollution discharge effect of the equipment can be improved. The screw conveyor shaft 16 makes the apparatus useful not only for sewage filtration but also for dewatering sludge.
Wherein, this integrative equipment of filtration, dehydration for sewage treatment still includes and is used for driving 15 pivoted drive arrangement of pivot, and drive arrangement includes motor 18, and motor 18 installs in frame 19, and the shell body of this equipment is installed in frame 19, and pivot 15 runs through to the shell body outside, and 18 output shafts of motor are connected with 15 transmissions of pivot through the drive mechanism who comprises band pulley and belt.
In some embodiments, the apparatus further comprises a backwash water inlet pipe 20 provided on the side wall of the outer drum 1, the backwash water inlet pipe 20 being in communication with the drainage chamber 7. The filter cartridge 4 can be backwashed by injecting water from the backwash water inlet pipe 20 to clean up clogged contaminants in the filter pores.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A filtering and dewatering integrated device for sewage treatment is characterized by comprising an outer shell, a filter cylinder (4) and a sewage discharge cylinder (5); the filter cartridge (4) is fixedly arranged in the outer shell, a sewage inlet pipe (6) communicated with the inner cavity of the filter cartridge (4) is arranged on the outer shell, a filter hole is formed in the side wall of the filter cartridge (4), a drainage chamber (7) is formed between the outer wall of the filter cartridge (4) and the inner wall of the outer shell, and a drainage pipe (8) communicated with the drainage chamber (7) is arranged on the outer shell;
the sewage discharging cylinder (5) is fixed at the bottom of the filter cylinder (4), and the sewage discharging cylinder (5) is communicated with the filter cylinder (4); a piston disc (9) is arranged on the inner side wall of the sewage discharging cylinder (5) in a sliding fit manner, at least one sewage discharging flow channel (10) is arranged on the piston disc (9), and the sewage discharging flow channel (10) penetrates through the outer side wall of the piston disc (9) from the upper end surface of the piston disc (9) downwards;
the peripheral side wall of the blowdown cylinder (5) is provided with a blowdown pipe (11) communicated with the inner cavity of the blowdown cylinder, the number of the blowdown pipes (11) is the same as that of the blowdown flow passages (10), the positions of the inner ports of the blowdown pipes (11) and the lower ports of the blowdown flow passages (10) in the peripheral direction of the blowdown cylinder (5) are the same, and the lower ports of the blowdown flow passages (10) can be communicated or disconnected with the blowdown pipes (11) by axially sliding the piston disc (9) along the blowdown cylinder (5);
the bottom end of the piston disc (9) is provided with an elastic supporting piece which is used for supporting the piston disc (9) to slide upwards through elasticity so as to disconnect the lower port of the sewage drainage flow channel (10) from the sewage drainage pipe (11).
2. A filtering and dewatering integrated device for sewage treatment according to claim 1, wherein a rotating shaft (15) is coaxially and rotatably mounted in the filter cartridge (4), a scraper (17) fixed relative to the rotating shaft (15) is arranged in the filter cartridge (4), and the scraper (17) is attached to the inner side wall of the filter cartridge (4).
3. A filtering and dewatering integrated device for sewage treatment according to claim 2, wherein the rotating shaft (15) is coaxially and fixedly provided with a spiral conveying shaft (16), and spiral blades of the spiral conveying shaft (16) are in clearance fit with the inner side wall of the filter cylinder (4).
4. The integrated filtering and dewatering device for sewage treatment according to claim 2 or 3, further comprising a driving device for driving the rotating shaft (15) to rotate, wherein the driving device comprises a motor (18), the motor (18) is mounted on a frame (19), the outer shell is mounted on the frame (19), the rotating shaft (15) penetrates outside the outer shell, and an output shaft of the motor (18) is in transmission connection with the rotating shaft (15) through a transmission mechanism.
5. The integrated filtering and dewatering device for sewage treatment according to claim 1, wherein the elastic supporting member comprises a pressure spring (12) and a guide rod (13), the guide rod (13) is axially mounted at the bottom of the piston disc (9) along the sewage draining cylinder (5), and the pressure spring (12) is sleeved on the guide rod (13).
6. The integrated filtering and dewatering device for sewage treatment according to claim 5, wherein the bottom end of the guide rod (13) penetrates below the outer shell, the guide rod (13) can move up and down along the outer shell, a positioning nut (14) is connected to the guide rod (13) in a threaded mode, and the positioning nut (14) presses the bottom of the outer shell.
7. A filtration and dehydration integrated device for sewage treatment according to claim 1, further comprising a backwash water inlet pipe (20) provided on the outer casing, the backwash water inlet pipe (20) being communicated with the drainage chamber (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110040889.6A CN112807791A (en) | 2021-01-13 | 2021-01-13 | Sewage treatment is with integrative equipment of filtration, dehydration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110040889.6A CN112807791A (en) | 2021-01-13 | 2021-01-13 | Sewage treatment is with integrative equipment of filtration, dehydration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112807791A true CN112807791A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110040889.6A Pending CN112807791A (en) | 2021-01-13 | 2021-01-13 | Sewage treatment is with integrative equipment of filtration, dehydration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112807791A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114344991A (en) * | 2022-01-17 | 2022-04-15 | 湖南鑫恒环境科技有限公司 | Suspended matter discharge equipment for purifying black and odorous water body of sewer |
| CN116371056A (en) * | 2023-05-08 | 2023-07-04 | 山东尼德环保装备有限公司 | Adjustable sewage extrusion treatment device |
| CN116508659A (en) * | 2023-07-04 | 2023-08-01 | 江苏爱索新材料科技有限公司 | Solid-liquid separation type water-fertilizer integrated machine for returning feces to field |
| CN114344991B (en) * | 2022-01-17 | 2024-04-19 | 湖南鑫恒环境科技有限公司 | Suspended matter discharge equipment for purifying black and odorous water body of sewer |
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| JP2004249184A (en) * | 2003-02-19 | 2004-09-09 | Tsurumi Mfg Co Ltd | Screw type filtration and dehydration apparatus |
| CN201840924U (en) * | 2010-07-02 | 2011-05-25 | 何建明 | Self-cleaning sewage filter |
| CN106989186A (en) * | 2017-03-07 | 2017-07-28 | 袁芳革 | Gravity type pollution discharge device |
| CN206814437U (en) * | 2017-05-24 | 2017-12-29 | 合肥赛德美金属表面科技有限公司 | A kind of environment-friendly non-cyanogen alkaline zinc plating Additive Production liquid waste treating apparatus |
| CN110451696A (en) * | 2019-09-13 | 2019-11-15 | 李斯琪 | A kind of biochemistry sewage separation agitation and filtration cleaning treatment system |
| CN111569502A (en) * | 2020-06-11 | 2020-08-25 | 广东省资源综合利用研究所 | Spiral solid-liquid separation device |
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2021
- 2021-01-13 CN CN202110040889.6A patent/CN112807791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004249184A (en) * | 2003-02-19 | 2004-09-09 | Tsurumi Mfg Co Ltd | Screw type filtration and dehydration apparatus |
| CN201840924U (en) * | 2010-07-02 | 2011-05-25 | 何建明 | Self-cleaning sewage filter |
| CN106989186A (en) * | 2017-03-07 | 2017-07-28 | 袁芳革 | Gravity type pollution discharge device |
| CN206814437U (en) * | 2017-05-24 | 2017-12-29 | 合肥赛德美金属表面科技有限公司 | A kind of environment-friendly non-cyanogen alkaline zinc plating Additive Production liquid waste treating apparatus |
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| CN111569502A (en) * | 2020-06-11 | 2020-08-25 | 广东省资源综合利用研究所 | Spiral solid-liquid separation device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114344991A (en) * | 2022-01-17 | 2022-04-15 | 湖南鑫恒环境科技有限公司 | Suspended matter discharge equipment for purifying black and odorous water body of sewer |
| CN114344991B (en) * | 2022-01-17 | 2024-04-19 | 湖南鑫恒环境科技有限公司 | Suspended matter discharge equipment for purifying black and odorous water body of sewer |
| CN116371056A (en) * | 2023-05-08 | 2023-07-04 | 山东尼德环保装备有限公司 | Adjustable sewage extrusion treatment device |
| CN116371056B (en) * | 2023-05-08 | 2023-12-22 | 四川省生态环保产业集团有限责任公司 | Adjustable sewage extrusion treatment device |
| CN116508659A (en) * | 2023-07-04 | 2023-08-01 | 江苏爱索新材料科技有限公司 | Solid-liquid separation type water-fertilizer integrated machine for returning feces to field |
| CN116508659B (en) * | 2023-07-04 | 2023-09-15 | 江苏爱索新材料科技有限公司 | Solid-liquid separation type water-fertilizer integrated machine for returning feces to field |
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