CN114522473B - Full-automatic solid-liquid enrichment separator - Google Patents
Full-automatic solid-liquid enrichment separator Download PDFInfo
- Publication number
- CN114522473B CN114522473B CN202210192666.6A CN202210192666A CN114522473B CN 114522473 B CN114522473 B CN 114522473B CN 202210192666 A CN202210192666 A CN 202210192666A CN 114522473 B CN114522473 B CN 114522473B
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- mixing box
- device shell
- sedimentation
- liquid
- transmission shaft
- Prior art date
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 238000002156 mixing Methods 0.000 claims abstract description 51
- 238000004062 sedimentation Methods 0.000 claims abstract description 51
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 33
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 10
- 238000007790 scraping Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 abstract description 31
- 239000002245 particle Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0045—Plurality of essentially parallel plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0048—Plurality of plates inclined in alternating directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0069—Making of contact surfaces, structural details, materials therefor
- B01D21/0072—Means for adjusting, moving or controlling the position or inclination of the contact surfaces, e.g. for optimising the particle-liquid separation, for removing the settled particles, for preventing fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a full-automatic solid-liquid enrichment separator which comprises a device shell, a first mixing box and a second mixing box, wherein the first mixing box and the second mixing box are arranged at two ends of the top of the device shell, and are communicated through a bottom cover; a clear liquid outlet is formed in the side wall of the first mixing box, a mixed liquid inlet is formed in the side wall of the second mixing box, and filter screens are arranged in the first mixing box and the second mixing box; the mixed solution entering the first mixing box and the second mixing box from the mixed solution inlet is filtered by a filter screen, and then can be discharged through a clear liquid outlet, so that the separation of a first level is realized; the mixed solution after passing through the first sedimentation zone can be discharged through a liquid taking port, so that the separation of a second level is realized; the mixed solution filtered by the second sedimentation zone can be discharged through the separation liquid outlet, thereby realizing the separation of the third level.
Description
Technical Field
The invention belongs to the technical field of solid-liquid separators, and particularly relates to a full-automatic solid-liquid enrichment separator.
Background
The solid-liquid separator is a high-efficiency solid-liquid separation technology developed based on the agglomeration principle, and can effectively treat high-turbidity raw water, mine wastewater, coal washing wastewater, mud water and the like with larger particulate matters. The low content of particles in raw water leads to the reduction of the probability of destabilization and coagulation of particles in the coagulation process, so that the coagulation difficulty of the low-turbidity raw water is increased, the purification efficiency is low, and the purification cost of the treatment technology of the turbid matters such as kaolin, fine sand and the like is higher. The principle of improving the turbidity of raw water by using an active sludge backflow technology is used as a reference, and the concentrated sludge treatment low-turbidity water in the backflow high-efficiency solid-liquid separation has certain exploration value and theoretical significance.
Gravity settling is the simplest method of separating dust particles from an airflow. Only when the particles are larger and the air speed is smaller, the gravity sedimentation effect is obvious; the nano-scale material is slow to settle, and double-layer or multi-layer inclined plates are added on the basis of original solid-liquid separation, so that nano mixed liquid forms a pipe adsorption effect in a narrow space range, fine particles are quickly settled in a relatively static state, mixed liquid with required concentration can be obtained according to the settling rate and the settling distance, and the nano mixed liquid can be used as a solid-liquid separator without thickening.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a full-automatic solid-liquid enrichment separator, which solves the problem that the existing solid-liquid separator cannot settle in a grading manner.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a full-automatic solid-liquid enrichment separator is characterized in that: the device comprises a device shell 19, a first mixing box 20 and a second mixing box 21, wherein the first mixing box 20 and the second mixing box 21 are arranged at two ends of the top of the device shell 19, and the first mixing box 20 and the second mixing box 21 are communicated through a bottom cover 6; a clear liquid outlet 11 is formed in the side wall of the first mixing box 20, a mixed liquid inlet 10 is formed in the side wall of the second mixing box 21, and filtering screens 23 are arranged in the first mixing box 20 and the second mixing box 21 and used for filtering impurities in the mixed liquid; when the mixed solution is injected into the first mixing tank 20 and the second mixing tank 21, impurities in the mixed solution are filtered through the filter screen 23, and separation of the first stage is achieved.
The bottoms of the first mixing box 20 and the second mixing box 21 are sequentially provided with a first sedimentation area and a second sedimentation area; a liquid taking port 12 is formed in one side of the device shell 19, and the liquid taking port 12 is positioned between the first sedimentation area and the second sedimentation area; the mixed solution passing through the first sedimentation zone can be discharged through the liquid taking port 12, so that the separation of the second level is realized; the mixed solution filtered by the second sedimentation zone can be discharged through the separation liquid outlet, thereby realizing the separation of the third level.
A transmission mechanism is arranged in the device shell 19, the transmission mechanism is positioned in the center of the device shell 19, and a stirrer 18 is arranged on the transmission mechanism;
the bottom of the device shell 19 is provided with a waste residue outlet 16 for discharging waste residue and a back-blowing inlet 15 for stirring the mixed liquid again, and the device shells 19 positioned at the two sides of the waste residue outlet 16 are respectively provided with a separating liquid outlet 14.
Further, the first sedimentation zone and the second sedimentation zone are respectively composed of a first sedimentation plate and a second sedimentation plate, and the first sedimentation plate and the second sedimentation plate respectively comprise a plurality of inclined plates 8, and the inclined plates 8 are fixed on the support 22.
Further, the transmission mechanism comprises a transmission shaft 7, a shaft coupling 3, a speed reducer 2 and a deslagging motor 1, wherein the transmission shaft 7 penetrates through a mounting bottom cover 6 to extend downwards to the bottom of a device shell 19, the transmission shaft 7 is connected with the deslagging motor 1 through the shaft coupling 3 and the speed reducer 2, the speed reducer 2 is fixed on a frame 4, and a packing 5 used for sealing is arranged at the bottom. When the mixed solution is injected into the device shell, the slag removal motor 1 is controlled to operate to drive the speed reducer 2, and the output shaft of the speed reducer 2 rotates the transmission shaft 7 through the coupler 3, so that the mixed solution is stirred, and the mixed solution is fully filtered in the first sedimentation zone and the second sedimentation zone.
Further, the bottom of the device shell 19 is of a conical structure, small scraping plates 24 are symmetrically arranged at the bottom, and the small scraping plates 24 are fixed on the transmission shaft 7 through the pull rods 9.
Further, a plurality of fixing brackets 17 for supporting the device housing 19 are installed at the bottom of the device housing 19.
Further, a manhole 13 for overhauling the separator is formed in the side wall of the second sedimentation area, and is used for overhauling the separator when the separator is in fault or damage.
Further, the mixed solution inlet 10, the liquid outlet 12 and the manhole 13 are all positioned on opposite side walls of the clear solution outlet 11, so that the mixed solution is sufficiently filtered.
The invention discloses a full-automatic solid-liquid enrichment separator, which has the beneficial effects that:
(1) According to the invention, the second mixing box is provided with the clear liquid outlet, the stationary room is provided with the liquid taking port, the bottom is provided with the separating liquid outlet, and the mixed solution subjected to different degrees of filtering treatment can be obtained through different outlets, so that the mixed solution can be separated at different levels.
(2) According to the invention, the speed reducer is driven by controlling the operation of the deslagging motor, the output shaft of the speed reducer rotates the transmission shaft through the coupler so as to realize the stirring of the mixed solution, so that the mixed solution is fully filtered when passing through the first sedimentation zone and the second sedimentation zone, the distance between the inclined plates can be adjusted according to the particle sizes in the mixed solution, the rapid sedimentation of different particle sizes is realized, the solid-liquid separation cost is reduced, the automation of the solid-liquid separation process flow is realized, and the labor cost and the potential safety hazard are reduced.
(3) The invention solves the problem that solid-liquid separation in each production process can not be operated automatically, and has application prospect in the production processes of chemical industry, pharmacy, food processing, edible oil processing, papermaking and the like.
Drawings
Fig. 1 is a schematic structural diagram of a fully automatic solid-liquid enrichment separator according to the present invention.
Fig. 2 is a top view of the fully automatic solid-liquid enrichment separator according to the present invention.
In the figure: 1-a deslagging motor; 2-a speed reducer; a 3-coupling; 4-a frame; 5-packing; 6-mounting a bottom cover; 7-a transmission shaft; 8-sloping plates; 9-stirring paddles; 10, a mixed liquid inlet; 11-clear liquid outlet; 12, a liquid taking port; 13-manhole; 14-a separation liquid outlet; 15-blowback inlet; 16-waste residue outlet; 17-fixing a bracket; 18-a stirrer; 19-a device housing; 20-a first mixing tank; 21-a second mixing tank; 22-a bracket; 23-a filter screen; 24-small scraper.
Detailed Description
While specific embodiments of the present invention have been described in order to facilitate understanding of the present invention by those skilled in the art, it should be apparent that the present invention is not limited to the scope of the specific embodiments, and that all the inventions which make use of the inventive concept are within the spirit and scope of the present invention as defined and defined by the appended claims to those skilled in the art.
Example 1
Referring to fig. 1, a full-automatic solid-liquid enrichment-separation device of the present embodiment includes a device housing 19, a first mixing tank 20 and a second mixing tank 21, the first mixing tank 20 and the second mixing tank 21 are installed at both ends of the top of the device housing 19, and the first mixing tank 20 and the second mixing tank 21 are communicated by installing a bottom cover 6; a clear liquid outlet 11 is formed in the side wall of the first mixing box 20, a mixed liquid inlet 10 is formed in the side wall of the second mixing box 21, and a filter screen 23 is arranged in each of the first mixing box 20 and the second mixing box 21;
the bottoms of the first mixing box 20 and the second mixing box 21 are sequentially provided with a first sedimentation area and a second sedimentation area; a liquid taking port 12 is formed in one side of the device shell 19, and the liquid taking port 12 is located between the first sedimentation area and the second sedimentation area.
A transmission mechanism is arranged in the device shell 19, the transmission mechanism is positioned in the center of the device shell 19, and a stirrer 18 is arranged on the transmission mechanism.
The bottom of the device shell 19 is provided with a waste residue outlet 16 for discharging waste residue and a back-blowing inlet 15 for stirring the mixed liquid again, and the device shells 19 positioned at the two sides of the waste residue outlet 16 are respectively provided with a separating liquid outlet 14.
The first sedimentation zone and the second sedimentation zone are respectively composed of a first sedimentation plate and a second sedimentation plate, each of the first sedimentation plate and the second sedimentation plate comprises a plurality of inclined plates 8, and the inclined plates 8 are fixed on the support 22.
When the mixed solution flows through the first settling zone, large particles in the mixed solution are filtered by a plurality of inclined plates 8 arranged in the first settling plate and the second settling plate, the separation of the second level and the separation of the third level are realized, and the stirrer 18 is used for stirring the mixed solution.
As a preferred embodiment of the invention, the transmission mechanism comprises a transmission shaft 7, a coupler 3, a speed reducer 2 and a deslagging motor 1, wherein the transmission shaft 7 penetrates through a mounting bottom cover 6 to extend downwards to the bottom of a device shell 19, the transmission shaft 7 is connected with the deslagging motor 1 through the coupler 3 and the speed reducer 2, the speed reducer 2 is fixed on a frame 4, and a packing 5 for sealing is arranged at the bottom.
Further, the bottom of the device shell 19 is of a conical structure, small scraping plates 24 are symmetrically arranged at the bottom, and the small scraping plates 24 are fixed on the transmission shaft 7 through the pull rods 9.
When the deslagging motor 1 drives the transmission shaft 7 to rotate, the small scraping plate 24 and the stirrer 18 which are connected with the transmission shaft 7 are driven to operate through the rotation of the transmission shaft 7; when the mixed solution is injected into the device shell 19, the slag removal motor 1 is controlled to operate to drive the speed reducer 2, and the output shaft of the speed reducer 2 rotates the transmission shaft 7 through the coupler 3, so that the mixed solution is stirred, and the mixed solution is fully filtered in the first sedimentation zone and the second sedimentation zone.
Further, a plurality of fixing brackets 17 for supporting the device housing 19 are installed at the bottom of the device housing 19.
Further, a manhole 13 for overhauling the separator is formed in the side wall of the second sedimentation area, and the manhole 13 is used for overhauling the separator when the separator is failed or damaged.
Further, the mixed liquor inlet 10, the liquor taking port 12 and the overhaul hole 13 are all positioned on the opposite side walls of the clear liquor outlet 11.
The deslagging motor 1 used in the embodiment is a YP2-100L2-4 motor.
The working principle of the full-automatic solid-liquid enrichment separator in the embodiment is as follows:
the mixed solution is injected through the mixed solution inlet 10, filtered through the filter screen 23, and discharged through the clear solution outlet 11, thereby realizing the first-stage separation.
Before flowing through the first sedimentation zone, the deslagging motor 1 is controlled to operate so as to drive the speed reducer 2, and an output shaft of the speed reducer 2 rotates a transmission shaft through the coupler 3 so as to stir the mixed solution; when the mixed solution flows through the first sedimentation zone, large particles in the mixed solution are filtered through a plurality of inclined plates 8 arranged in the first sedimentation plate, and the filtered mixed solution is discharged through a liquid taking port 12, so that the separation of a second level is realized.
When the mixed solution flows through the second sedimentation zone, the inclined plates 8 in the second sedimentation plate realize rapid sedimentation of different particle sizes, and the third-level separation is realized by discharging through the separation liquid outlet 14.
Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (1)
1. A full-automatic solid-liquid enrichment separator is characterized in that: the device comprises a device shell (19), a first mixing box (20) and a second mixing box (21), wherein the first mixing box (20) and the second mixing box (21) are arranged at two ends of the top of the device shell (19), and the first mixing box (20) and the second mixing box (21) are communicated through a mounting bottom cover (6); a clear liquid outlet (11) is formed in the side wall of the first mixing box (20), a mixed liquid inlet (10) is formed in the side wall of the second mixing box (21), and filtering screens (23) are arranged in the first mixing box (20) and the second mixing box (21);
the bottoms of the first mixing box (20) and the second mixing box (21) are sequentially provided with a first sedimentation area and a second sedimentation area; a liquid taking port (12) is formed in one side of the device shell (19), and the liquid taking port (12) is positioned between the first sedimentation area and the second sedimentation area;
a transmission mechanism is arranged in the device shell (19), the transmission mechanism is positioned in the center of the device shell (19), and a stirrer (18) is arranged on the transmission mechanism;
a waste residue outlet (16) for discharging waste residue and a back-blowing inlet (15) for stirring mixed liquid again are formed in the bottom of the device shell (19), and separation liquid outlets (14) are formed in the device shell (19) positioned on two sides of the waste residue outlet (16) respectively;
the first sedimentation zone and the second sedimentation zone are respectively composed of a first sedimentation plate and a second sedimentation plate, each of the first sedimentation plate and the second sedimentation plate comprises a plurality of sloping plates (8), and the sloping plates (8) are fixed on a bracket (22);
the transmission mechanism comprises a transmission shaft (7), a coupler (3), a speed reducer (2) and a deslagging motor (1), wherein the transmission shaft (7) penetrates through a mounting bottom cover (6) to extend downwards to the bottom of a device shell (19), the transmission shaft (7) is connected with the deslagging motor (1) through the coupler (3) and the speed reducer (2), the speed reducer (2) is fixed on a frame (4), and a packing (5) for sealing is arranged at the bottom of the transmission shaft;
the bottom of the device shell (19) is of a conical structure, small scraping plates (24) are symmetrically arranged at the bottom, and the small scraping plates (24) are fixed on the transmission shaft (7) through pull rods (9);
the bottom of the device shell (19) is provided with a plurality of fixed brackets (17) for supporting the device shell (19);
a manhole (13) for overhauling the separator is formed in the side wall of the second sedimentation zone;
the mixed liquid inlet (10), the liquid taking port (12) and the overhaul hole (13) are all positioned on opposite side walls of the clear liquid outlet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192666.6A CN114522473B (en) | 2022-03-01 | 2022-03-01 | Full-automatic solid-liquid enrichment separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192666.6A CN114522473B (en) | 2022-03-01 | 2022-03-01 | Full-automatic solid-liquid enrichment separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114522473A CN114522473A (en) | 2022-05-24 |
| CN114522473B true CN114522473B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210192666.6A Active CN114522473B (en) | 2022-03-01 | 2022-03-01 | Full-automatic solid-liquid enrichment separator |
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| Country | Link |
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| CN (1) | CN114522473B (en) |
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| CN111450581A (en) * | 2020-05-18 | 2020-07-28 | 宜兴市荣盛达环保有限公司 | High-effect solid-liquid clarification separator |
| CN212283017U (en) * | 2020-05-18 | 2021-01-05 | 宜兴市荣盛达环保有限公司 | High-effect solid-liquid clarification separator |
| CN217490075U (en) * | 2021-11-15 | 2022-09-27 | 成都阿利特建材有限公司 | Full-automatic solid-liquid thickening separator |
-
2022
- 2022-03-01 CN CN202210192666.6A patent/CN114522473B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2771637A1 (en) * | 2011-08-12 | 2013-02-12 | Ecodays Co., Ltd. | Apparatus for treating wastewater |
| CN202729869U (en) * | 2012-07-25 | 2013-02-13 | 北京朗新明环保科技有限公司南京分公司 | Automatic integrated coagulation, clarification and filtration device |
| CN103272413A (en) * | 2013-06-21 | 2013-09-04 | 长春联创水质工程有限公司 | Bidirectional flow variable-spacing inclined plate sedimentation tank |
| CN204958419U (en) * | 2015-08-24 | 2016-01-13 | 德兴市龙圣碳酸钙有限公司 | Continuous densification jar of calcium carbonate |
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| CN217490075U (en) * | 2021-11-15 | 2022-09-27 | 成都阿利特建材有限公司 | Full-automatic solid-liquid thickening separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114522473A (en) | 2022-05-24 |
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