CN113281219A - Laboratory measuring device for laboratory sludge density index - Google Patents
Laboratory measuring device for laboratory sludge density index Download PDFInfo
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- CN113281219A CN113281219A CN202110646279.0A CN202110646279A CN113281219A CN 113281219 A CN113281219 A CN 113281219A CN 202110646279 A CN202110646279 A CN 202110646279A CN 113281219 A CN113281219 A CN 113281219A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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Abstract
The invention discloses a laboratory measuring device for a laboratory sludge density index, which comprises a laboratory frame, wherein a fixed frame is arranged on one side of the inner side of the laboratory frame, a sampling groove is arranged on one side of the bottom of the inner side of the laboratory frame, a sludge density test board and an index tester body are respectively arranged at the middle position of one side of the fixed frame, and a measuring groove is arranged on one side of the fixed frame; the density measuring instrument performs density measuring work on the sludge entering the measuring tank through the mutual matching of the index tester body and the sludge density test board, during the process, the sludge entering the guide chute is filtered under the permeation of the filter net bag under the matching of the centrifugal filter component, granular impurities contained in the sludge are extracted, the water liquid spraying component is matched to spray water liquid with a plurality of groups of nozzles, the falling lubricity of the sludge is enhanced, the centrifugal rotation of the guide chute is matched, the sludge conveying falling filtering efficiency is effectively improved, and the flocculation effect in the sludge centralized measuring tank is increased.
Description
Technical Field
The invention relates to the technical field of sludge density measurement, in particular to a laboratory measuring device for laboratory sludge density index.
Background
The density index value of the sludge is one of important parameters of water quality indexes, represents the content of particles, colloid and other substances which can block various water purification equipment in water, corresponding water purification technologies or equipment can be selected by measuring an SDI value, the SDI value is one of important marks for measuring the water inflow of a reverse osmosis system in the process of reverse osmosis water treatment, is a main means for detecting whether the effluent of a pretreatment system meets the requirements of reverse osmosis water inflow, and the size of the SDI value is important for the service life of the reverse osmosis system.
During the measurement period of the current sludge density index, sludge to be measured is often required to be placed into a measuring tank body according to a certain index for precipitation, however, the sludge contains more granular impurities, and the sludge contains certain viscosity, so that the impurities are difficult to filter and remove, and the sludge is easy to block at a feed inlet during pouring and conveying, thereby affecting the subsequent measurement efficiency and precision; after sludge is measured, the tank body for measuring the sludge generally needs to be cleaned, however, the sludge is possibly concentrated and adhered to the inner wall of the device due to viscosity and is difficult to clean, and the working difficulty and inconvenience of operators are increased; during the silt is measured, probably need take out partial silt or water liquid, carry out sample test work to the attribute and the quality of silt etc. nevertheless silt is difficult to take out during the measurement, influences the normal measurement work of silt density very easily, increases the limitation of device use, reduces operating personnel's work efficiency.
Disclosure of Invention
The invention aims to provide a laboratory measuring device for laboratory sludge density index, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the device comprises an experiment frame, wherein a fixing frame is arranged on one side of the inner side of the experiment frame, a sampling groove is arranged on one side of the bottom of the inner side of the experiment frame, a sludge density test platform and an index tester body are respectively arranged at the middle position of one side of the fixing frame, a measuring groove is arranged on one side of the fixing frame, mounting grooves which are mutually connected are arranged at the top of the measuring groove, a driving motor is arranged on one side of the bottom of the inner part of the mounting groove, a gear is arranged at the output end of the driving motor, a bearing seat is arranged at the middle position of the bottom of the inner part of the mounting groove, a feeding hole is arranged at the middle position of the top of the mounting groove, a discharge valve which is mutually communicated is arranged at the middle position of the bottom of the measuring groove, a sampling pump is arranged on one side of the bottom of the, one side at the fixed bolster top is equipped with water liquid and sprays the subassembly, the inboard cover of bearing frame is equipped with centrifugal filter assembly, one side at experiment frame top is equipped with the control cabinet.
Preferably, a liquid storage tank is arranged on one side of the top of the water liquid spraying assembly, pressure stabilizing valves communicated with each other are arranged on one side of the liquid storage tank, water pumps communicated with each other are arranged on the tops of the pressure stabilizing valves, an annular liquid guide tank is arranged on the outer side, close to the feed inlet, of the top of the mounting groove, the annular liquid guide tank is communicated with the water pumps, and spray heads communicated with each other are uniformly arranged at the bottom of the annular liquid guide tank.
Preferably, the inboard cover of centrifugal filtration subassembly is equipped with the sleeve pipe, sheathed tube top is equipped with the baffle box of mutual intercommunication, the inside top of baffle box is equipped with the filter screen bag, sheathed tube bottom is equipped with the honeycomb duct of mutual intercommunication, the bin outlet has evenly been seted up in the outside of honeycomb duct, the edge at the inside top of measurement groove is equipped with annular spout, the inboard symmetry of annular spout is equipped with the slider of mutually supporting, and is two sets of the bottom of slider is equipped with the linking arm with honeycomb duct interconnect, and is two sets of one side that the linking arm bottom was kept away from each other is equipped with the brush board of laminating each other with the measurement inslot wall, the bottom in the baffle box outside is equipped with the outer ring gear with gear intermeshing.
Preferably, a liquid level observation window is arranged at one end of the front surface of the sampling groove, a liquid receiving port is arranged at one side of the top of the sampling groove, and the liquid receiving port corresponds to the drainage pipe.
Preferably, one side of measuring tank bottom is equipped with communicating pipe, and one side of communicating pipe is equipped with the drain valve, the both sides of measuring tank inside bottom are equipped with interconnect's oblique type fixed plate, and the top of oblique type fixed plate is equipped with the fixed column, and the outside of fixed column is equipped with three group and the toper guide block that multiunit bin outlet position corresponds, the intermediate position department in the measuring tank outside is equipped with fixed frame, and fixed frame respectively with experiment frame and mount interconnect.
Preferably, the edge at the inside top of mounting groove is equipped with the guide ring, and the guide ring is mutually supported with the baffle box, the bottom of mounting groove one side is equipped with the fixed block, and the bottom of fixed block is equipped with discharge valve, and discharge valve communicates each other with the inside of measuring tank.
Preferably, the index tester body passes through the mounting groove and extends to the inside of measuring tank, and one end of silt density testboard is equipped with data display screen.
Preferably, a plurality of groups of the nozzles are in an inclined structure and are communicated with the annular liquid guide groove for assembly, and the plurality of groups of the nozzles correspond to the inside of the liquid guide groove.
Preferably, positioning columns are arranged on two sides of the top of the guide chute, and positioning rings matched with the positioning columns are arranged on the top of two sides of the filter net bag.
Preferably, the top of the plurality of groups of discharge outlets is provided with an inclined flow guide frame, and one side of each group of cleaning plates, which is close to each other, is provided with a stirring brush.
Compared with the prior art, the invention provides a laboratory measuring device for laboratory sludge density index, which has the following beneficial effects:
1. the invention carries out density measurement on the sludge entering the measuring tank through the mutual matching of the index tester body and the sludge density test bench, during the process, the sludge entering the guide chute is filtered under the permeation of the filter net bag under the matching of the centrifugal filter component, the granular impurities contained in the sludge are extracted, and the water spraying component is matched to spray water with a plurality of groups of nozzles, so that the falling lubricity of the sludge is enhanced, the centrifugal rotation of the guide chute is matched, the falling filtering efficiency of the sludge conveying is effectively improved, the flocculation effect in the sludge centralized measuring tank is increased, thereby well matching with the index tester body and the sludge density test bench to carry out the sludge density index measurement work, utilize the sample pump simultaneously and inhale the intercommunication cooperation of material pipe, be convenient for take out the silt ration in the measuring tank to the sample tank in and collect, conveniently sample alone silt, increase functional and the flexibility that the device used.
2. The invention utilizes the mutual matching of the centrifugal filtering components, is convenient for separating impurities contained in the sludge under the centrifugal rotation of the guide chute and the filtering permeation of the filtering net bag, and enables the filtered impurities to be concentrated on the surface of the filtering net bag, so that the filtering net bag is convenient to be taken and cleaned independently, and simultaneously, under the communication and matching of a plurality of groups of discharge ports and the guide pipes, the sludge conveyed by the guide pipes is enabled to be discharged outwards under the influence of the centrifugal force, the uniformity of the sludge concentrated in the measuring tank is improved, and the sedimentation efficiency of the sludge and the accuracy of subsequent measurement are improved.
3. According to the invention, through the mutual matching of the water liquid spraying components, when the measuring tank needs to be cleaned, the water liquid is enabled to fly outwards under the communication of the guide chute and the guide pipe by spraying of the multiple groups of spray heads, and the two groups of connecting arms and the cleaning plates are driven to rotate annularly under the guiding matching of the sliding blocks and the annular sliding grooves along with the rotation of the guide pipe in the centrifugal filtering component, so that the two groups of cleaning plates are enabled to stir the water liquid entering the measuring tank and scrape the inner wall of the measuring tank, and further, the sludge adhered in the measuring tank is automatically cleaned and removed by matching with the spraying of the water liquid, the convenience of the cleaning work of the device is improved, and the practicability of the device is enhanced.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged cross-sectional view of the mounting groove of the present invention;
FIG. 4 is an enlarged cross-sectional view of the measuring tank of the present invention;
FIG. 5 is a bottom view of the annular fluid guide channel of the present invention;
FIG. 6 is a perspective view of the draft tube of the present invention;
fig. 7 is a perspective view of the material guide chute of the present invention.
In the figure: 1. an experiment frame; 2. a sampling groove; 3. a measuring tank; 4. a fixed mount; 5. an index tester body; 6. a sludge density test bench; 7. a console; 8. a liquid storage tank; 801. a pressure maintaining valve; 802. a water pump; 803. an annular liquid guide groove; 804. a spray head; 9. mounting grooves; 10. a feed inlet; 11. a gear; 12. a drive motor; 13. a bearing seat; 14. an outer ring gear; 141. a sleeve; 142. a material guide chute; 143. a filter net bag; 144. a slider; 145. an annular chute; 146. a flow guide pipe; 147. a discharge outlet; 148. a connecting arm; 149. cleaning the board; 15. a discharge valve; 16. a material suction pipe; 17. a sampling pump; 18. a drain pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a laboratory measuring device for laboratory sludge density index comprises a laboratory frame 1, wherein a fixing frame 4 is arranged on one side of the inner side of the laboratory frame 1, a sampling groove 2 is arranged on one side of the bottom of the inner side of the laboratory frame 1, a sludge density test table 6 and an index tester body 5 are respectively arranged at the middle position of one side of the fixing frame 4, a measuring groove 3 is arranged on one side of the fixing frame 4, a mounting groove 9 which is mutually connected is arranged at the top of the measuring groove 3, a driving motor 12 is arranged on one side of the inner bottom of the mounting groove 9, a gear 11 is arranged at the output end of the driving motor 12, a bearing seat 13 is arranged at the middle position of the inner bottom of the mounting groove 9, a feeding port 10 is arranged at the middle position of the top of the mounting groove 9, a discharge valve 15 which is mutually communicated is arranged at the middle position of the bottom of the measuring groove 3, a sampling pump 17 is arranged on, inhale the inside that material pipe 16 extends to measuring tank 3, one side at mount 4 top is equipped with water liquid and sprays the subassembly, and the inboard cover of bearing frame 13 is equipped with centrifugal filter assembly, and one side at experiment frame 1 top is equipped with control cabinet 7.
As a preferable embodiment of the present embodiment: one side at the top of water liquid spraying assembly is equipped with reservoir 8, and one side of reservoir 8 is equipped with pressure stabilizing valve 801 that communicates each other, and pressure stabilizing valve 801's top is equipped with water pump 802 that communicates each other, and the outside that the top of mounting groove 9 is close to feed inlet 10 is equipped with annular liquid guide groove 803, and annular liquid guide groove 803 and water pump 802 communicate each other, and the bottom in annular liquid guide groove 803 evenly is equipped with shower nozzle 804 that communicates each other.
As a preferable embodiment of the present embodiment: the inboard cover of centrifugal filter subassembly is equipped with sleeve pipe 141, sleeve pipe 141's top is equipped with the baffle box 142 of mutual intercommunication, the inside top of baffle box 142 is equipped with filtration string bag 143, sleeve pipe 141's bottom is equipped with the honeycomb duct 146 of mutual intercommunication, bin outlet 147 has evenly been seted up in the outside of honeycomb duct 146, the edge at the inside top of measurement groove 3 is equipped with annular spout 145, the inboard symmetry of annular spout 145 is equipped with the slider 144 of mutually supporting, the bottom of two sets of sliders 144 is equipped with the linking arm 148 with honeycomb duct 146 interconnect, the one side of keeping away from each other bottom two sets of linking arms 148 is equipped with the brush-cleaning plate 149 with the mutual laminating of measurement groove 3 inner wall, the bottom in the baffle box 142 outside is equipped with the outer ring gear 14 with gear 11 intermeshing.
As a preferable embodiment of the present embodiment: the positive one end of sample groove 2 is equipped with the liquid level observation window, and one side at 2 tops of sample groove is equipped with and connects the liquid mouth, and connects the liquid mouth and correspond each other with discharge tube 18, is convenient for take a sample to partial silt through sample groove alone, and the silt of convenient removal sample carries out subsequent test work.
As a preferable embodiment of the present embodiment: one side of measuring tank 3 bottom is equipped with communicating pipe, and one side of communicating pipe is equipped with the drain valve, be convenient for will long-pending water liquid seepage discharge inside silt, improve the accuracy nature of silt density test work, the both sides of the inside bottom of measuring tank 3 are equipped with interconnect's oblique type fixed plate, and the top of oblique type fixed plate is equipped with the fixed column, and the outside of fixed column is equipped with the toper guide block that three groups and multiunit bin outlet 147 position correspond, increase the guidance quality that silt carried the whereabouts, the intermediate position department in the 3 outsides of measuring tank is equipped with fixed frame, and fixed frame respectively with experiment frame 1 and mount 4 interconnect.
As a preferable embodiment of the present embodiment: the edge at the inside top of mounting groove 9 is equipped with the guide ring, and the guide ring is mutually supported with baffle box 142, and the bottom of mounting groove 9 one side is equipped with the fixed block, and the bottom of fixed block is equipped with discharge valve, and discharge valve communicates each other with the inside of measuring cell 3, is convenient for discharge the gas in measuring cell 3 fast to cooperation silt density measurement work.
As a preferable embodiment of the present embodiment: the index tester body 5 passes through the inside that mounting groove 9 extended to measuring tank 3, and the one end of silt density test platform 6 is equipped with data display screen, is convenient for carry out density detection work to silt through the index tester body, throws out the data that detect simultaneously through data display screen.
As a preferable embodiment of the present embodiment: the multiple groups of spray heads 804 are of an inclined structure and are communicated with the annular liquid guide groove 803 for assembly, the multiple groups of spray heads 804 correspond to the inside of the liquid guide groove 142, so that water can be conveniently concentrated and sprayed to the inside of the liquid guide groove 142, the falling of sludge is matched to improve the filtering effect of the sludge, and the subsequent device cleaning work is facilitated.
As a preferable embodiment of the present embodiment: the both sides at baffle box 142 top are equipped with the reference column, and the top of filter screen bag 143 both sides is equipped with the holding ring of mutually supporting with the reference column, and the block of the cancellation holding ring of being convenient for and reference column is fixed, makes filter screen bag 143 take out alone, and the impurity that filters silt with filter screen bag 143 carries out the cleaning work, increases the convenience that this structure used the dismouting.
As a preferable embodiment of the present embodiment: the top of multiunit bin outlet 147 all is equipped with oblique type water conservancy diversion frame, increases the water conservancy diversion nature of discharging silt from bin outlet 147, and one side that two sets of clear brush boards 149 are close to each other is equipped with the stirring brush, can be when the device carries out the cleaning work to the water liquid stirring, strengthens the cleaning efficiency of device.
The working principle is as follows: when the device is used, sludge to be measured can be poured into the mounting groove 9 from the feeding hole 10, during the period, the driving motor 12 is started through the control console 7, the gear 11 is driven to rotate along with the starting of the driving motor 12, the gear 11 and the outer gear ring 14 are forced to be meshed with each other to drive the sleeve 141, the guide chute 142 and the guide pipe 146 to integrally rotate under the matching of the bearing block 13, at this time, the sludge falling from the feeding hole 10 can be received through the guide chute 142 and the filter net bag 143, and is subjected to osmotic filtration through the filter net bag 143 rotating centrifugally to promote the separation of impurities in the sludge, then the separated sludge enters the guide pipe 146 from the sleeve 141, the sludge is promoted to fly out from the plurality of groups of discharge openings 147 under the influence of centrifugal force, and then is uniformly covered and deposited in the measuring groove 3, at this time, the sludge density detection work can be carried out through the mutual matching of the index tester body 5 and the sludge density testing table 6, during this time, the silt in the measuring tank 3 is absorbed to the drainage pipe 18 from the material suction pipe 16 and discharged through the sampling pump 17, and the silt is received through the sampling tank 2, so that part of the silt can be taken out independently to perform subsequent sampling test work, and the functionality and the practicability of the device are improved.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A laboratory measuring device for laboratory sludge density index, comprising a laboratory frame (1), characterized in that: the testing device is characterized in that a fixing frame (4) is arranged on one side of the inner side of the testing frame (1), a sampling groove (2) is arranged on one side of the inner side bottom of the testing frame (1), a sludge density testing table (6) and an index testing instrument body (5) are respectively arranged at the middle position of one side of the fixing frame (4), a measuring groove (3) is arranged on one side of the fixing frame (4), mounting grooves (9) which are mutually connected are arranged at the top of the measuring groove (3), a driving motor (12) is arranged on one side of the inner bottom of the mounting groove (9), a gear (11) is arranged at the output end of the driving motor (12), a bearing seat (13) is arranged at the middle position of the inner bottom of the mounting groove (9), a feeding hole (10) is formed at the middle position of the top of the mounting groove (9), and a discharging valve (15) which is mutually communicated is arranged at the middle position of the bottom of the measuring groove (3), one side of measuring tank (3) bottom is equipped with sample pump (17), the both sides of sample pump (17) are equipped with the suction pipe (16) and drainage pipe (18) that communicate each other respectively, suction pipe (16) extend to the inside of measuring tank (3), one side at mount (4) top is equipped with water liquid spray assembly, the inboard cover of bearing frame (13) is equipped with centrifugal filter assembly, one side at experiment frame (1) top is equipped with control cabinet (7).
2. The laboratory sludge density index laboratory measuring device of claim 1, wherein: one side at water liquid spray assembly top is equipped with reservoir (8), one side of reservoir (8) is equipped with pressure stabilizing valve (801) that communicate with each other, the top of pressure stabilizing valve (801) is equipped with water pump (802) that communicate with each other, the outside that the mounting groove (9) top is close to feed inlet (10) is equipped with annular liquid guide groove (803), and annular liquid guide groove (803) and water pump (802) communicate with each other, the bottom in annular liquid guide groove (803) evenly is equipped with shower nozzle (804) that communicate with each other.
3. The laboratory sludge density index laboratory measuring device of claim 1, wherein: a sleeve (141) is sleeved on the inner side of the centrifugal filtering component, the top of the sleeve (141) is provided with a guide chute (142) which is communicated with each other, the top of the interior of the material guide groove (142) is provided with a filtering net bag (143), the bottom of the sleeve (141) is provided with a guide pipe (146) which is communicated with each other, the outer side of the draft tube (146) is uniformly provided with a discharge outlet (147), the edge of the inner top of the measuring groove (3) is provided with an annular chute (145), the inner sides of the annular chutes (145) are symmetrically provided with mutually matched sliding blocks (144), the bottoms of the two groups of sliding blocks (144) are provided with connecting arms (148) mutually connected with the guide pipe (146), the sides of the bottoms of the two groups of connecting arms (148) far away from each other are provided with brushing plates (149) mutually attached to the inner wall of the measuring groove (3), and an outer gear ring (14) meshed with the gear (11) is arranged at the bottom of the outer side of the material guide groove (142).
4. The laboratory sludge density index laboratory measuring device of claim 1, wherein: the liquid level observation window is arranged at one end of the front face of the sampling groove (2), a liquid receiving port is arranged at one side of the top of the sampling groove (2), and the liquid receiving port corresponds to the drainage pipe (18).
5. The laboratory sludge density index laboratory measuring device of claim 1, wherein: one side of measuring tank (3) bottom is equipped with communicating pipe, and one side of communicating pipe is equipped with the drain valve, the both sides of the inside bottom of measuring tank (3) are equipped with interconnect's oblique type fixed plate, and the top of oblique type fixed plate is equipped with the fixed column, and the outside of fixed column is equipped with three group's toper guide blocks that correspond with multiunit bin outlet (147) position, the intermediate position department in the measuring tank (3) outside is equipped with fixed frame, and fixed frame respectively with experiment frame (1) and mount (4) interconnect.
6. The laboratory sludge density index laboratory measuring device of claim 1, wherein: the edge at the inside top of mounting groove (9) is equipped with the guide ring, and the guide ring is mutually supported with baffle box (142), the bottom of mounting groove (9) one side is equipped with the fixed block, and the bottom of fixed block is equipped with discharge valve, and discharge valve communicates each other with the inside of measuring cell (3).
7. The laboratory sludge density index laboratory measuring device of claim 1, wherein: the index tester body (5) penetrates through the mounting groove (9) and extends into the measuring groove (3), and one end of the sludge density testing table (6) is provided with a data display screen.
8. The laboratory sludge density index laboratory measuring device of claim 2, wherein: the multiple groups of spray heads (804) are in an inclined structure and are mutually communicated and assembled with the annular material guide groove (803), and the multiple groups of spray heads (804) correspond to the interior of the material guide groove (142).
9. The laboratory sludge density index laboratory measuring device of claim 3, wherein: positioning columns are arranged on two sides of the top of the guide chute (142), and positioning rings matched with the positioning columns are arranged on the top of two sides of the filter net bag (143).
10. The laboratory sludge density index laboratory measuring device of claim 3, wherein: the top of the plurality of groups of discharge outlets (147) is provided with an inclined flow guide frame, and one side of each group of cleaning plates (149) close to each other is provided with a stirring brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646279.0A CN113281219B (en) | 2021-06-10 | 2021-06-10 | Be used for laboratory silt density index laboratory measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646279.0A CN113281219B (en) | 2021-06-10 | 2021-06-10 | Be used for laboratory silt density index laboratory measuring device |
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| Publication Number | Publication Date |
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| CN113281219A true CN113281219A (en) | 2021-08-20 |
| CN113281219B CN113281219B (en) | 2022-06-28 |
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| CN202110646279.0A Active CN113281219B (en) | 2021-06-10 | 2021-06-10 | Be used for laboratory silt density index laboratory measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114858669A (en) * | 2022-07-07 | 2022-08-05 | 江苏科德生态环保水处理有限公司 | Intelligent sludge settlement ratio detection device |
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| US20080029457A1 (en) * | 2005-04-28 | 2008-02-07 | Hitachi, Ltd. | Magnetic Separation Purifying Apparatus and Magnetic Separation Purifying Method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114858669B (en) * | 2022-07-07 | 2022-09-20 | 江苏科德生态环保水处理有限公司 | Intelligent sludge settlement ratio detection device |
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| CN113281219B (en) | 2022-06-28 |
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