CN219823894U - Intelligent coarse separation system - Google Patents
Intelligent coarse separation system Download PDFInfo
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- CN219823894U CN219823894U CN202122407529.3U CN202122407529U CN219823894U CN 219823894 U CN219823894 U CN 219823894U CN 202122407529 U CN202122407529 U CN 202122407529U CN 219823894 U CN219823894 U CN 219823894U
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Abstract
The utility model provides an intelligent coarse separation system, which belongs to the technical field of sewage treatment and comprises a coagulation reaction tank, a flocculation reaction tank, a precipitation concentration tank, an inclined tube separation zone, a cyclone separation device and a dosing device.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to an intelligent coarse separation system.
Background
At present, no matter municipal sewage or industrial sewage is treated, various modes such as solid-liquid separation, liquid-liquid separation and the like are adopted for treatment. The separation accuracy of coagulating sedimentation separation for the purpose of removing a precipitable suspended substance and liquid-liquid separation for removing suspended and floating states is also becoming higher and higher. In general, sewage (especially sewage containing phosphorus) is treated at least by a coarse separation stage and a fine separation stage, wherein the sewage is subjected to primary or primary separation in the coarse separation stage, and then is subjected to secondary separation in the fine separation stage, so that sewage or purified water meeting the treatment effect can be finally obtained. However, the coarse separation system used in the coarse separation stage in the prior art has a less-ideal sewage treatment effect, is troublesome in treatment operation, and has the phosphorus content of 1.0-1.5 mg/L in the treated sewage.
Disclosure of Invention
The utility model aims to provide an intelligent coarse separation system, which aims to solve the technical problem that the coarse separation system is troublesome to sewage treatment operation in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is an intelligent coarse separation system, comprising:
the upper part of the coagulation reaction tank is provided with a water inlet, the lower part of the coagulation reaction tank is provided with a water outlet, the interior of the coagulation reaction tank is provided with a mixture of water and phosphorus to be subjected to coarse separation, and a first stirrer for stirring the mixture is arranged in the coagulation reaction tank;
the flocculation reaction tank is internally provided with a second stirrer for stirring the mixture, and the flocculation reaction tank is used for enabling the mixture to undergo flocculation reaction;
the sedimentation and concentration tank comprises a sedimentation area positioned at the upper part and a concentration area positioned at the lower part, the upper part of the sedimentation area is provided with a water inlet which is mutually in butt joint and communicated with a water outlet of the flocculation reaction tank, the mixture enters the sedimentation area after undergoing flocculation reaction in the flocculation reaction tank, the sedimentation area is used for settling suspended solids in the mixture, the settled suspended solids enter the concentration area, and the concentration area is used for concentrating the settled suspended solids; a mud scraper with grid bars is arranged in the concentration area and is used for scraping mud and accelerating concentration of suspended solids;
the inclined tube separation zone is arranged at the upper part of the sedimentation zone and is used for separating suspended solids which are not precipitated in the sedimentation zone, a water outlet is arranged at the side part of the sedimentation zone, which is close to the inclined tube separation zone, and the mixture separated by the inclined tube separation zone can flow out from the water outlet;
the input end of the cyclone separation device is communicated with the concentration area and is used for separating and recycling substances discharged from the concentration area, and liquid separated by the cyclone separation device can also flow into the flocculation reaction tank;
and the dosing device is respectively used for adding coagulant into the coagulation reaction tank and adding flocculant into the flocculation reaction tank.
In one possible implementation manner, a guide cylinder is arranged in the middle of the flocculation reaction tank, a guide plate is arranged at the bottom of the guide cylinder, a flocculant adding ring is arranged in the guide cylinder, the added flocculant is placed on the flocculant adding ring, flocculation reaction is carried out in the guide cylinder, and the flocculation speed in the guide cylinder is higher than the flocculation speed in the outer part of the guide cylinder by virtue of the stirring of the second stirrer, so that different flocculation energy differences are formed in the inner part and the outer part of the guide cylinder.
In one possible implementation, the intelligent coarse separation system further comprises:
and the multiple groups of detection devices are arranged at the water inlet of the coagulation reaction tank and the water outlet of the sedimentation tank and are used for detecting the total phosphorus and suspended solid data in the mixture on line.
In one possible implementation, the detection device includes a total phosphorus detector for detecting total phosphorus in the mixture on-line and a suspended solids detector for detecting suspended solids in the mixture on-line.
In one possible implementation, the intelligent coarse separation system further comprises a control panel for controlling the dosage of the dosing device, wherein a dosing flow control button and a dosing speed control button are arranged on the control panel.
In one possible implementation, the reaction time of the mixture in the coagulation reaction tank is 1-2 minutes and the residence time in the flocculation reaction tank is 20 minutes.
In one possible implementation, the drug delivery device comprises:
two medicine boxes respectively containing coagulant and flocculant;
the two dosing pumps are respectively communicated with the two drug boxes through pipelines correspondingly, the output ends of the two dosing pumps are respectively communicated with the coagulation reaction tank and the flocculation reaction tank correspondingly through pipelines, and are used for respectively pumping coagulant and flocculant into the coagulation reaction tank and the flocculation reaction tank, and the pumping flow of the dosing pumps is controllable.
In one possible implementation manner, a sludge bucket which is in an inverted trapezoid shape is arranged at the bottom of the concentration area, the sludge scraper scrapes sludge into the sludge bucket, a sludge pump is arranged at the bottom of the sludge bucket, and the sludge pump can suck the sludge in the sludge bucket and discharge the sludge outside.
In one possible implementation manner, the intelligent coarse separation system further comprises a sludge storage tank, the sludge storage tank is communicated with the sludge pump, sludge output by the sludge pump flows into the sludge storage tank, the cyclone separation device is further communicated with the sludge storage tank, and sludge separated by the cyclone separation device is also conveyed into the sludge storage tank.
In one possible implementation manner, the dosing pump is a variable frequency type, and a solenoid valve and a flowmeter are arranged on a pipeline at the output end of the dosing pump, the solenoid valve is used for controlling dosing amount, and the flowmeter is used for monitoring current dosing flow.
The intelligent coarse separation system provided by the utility model has the beneficial effects that: compared with the prior art, the intelligent coarse separation system comprises the coagulation reaction tank, the flocculation reaction tank, the sedimentation concentration tank, the inclined tube separation area, the cyclone separation device and the dosing device, wherein the coagulation reaction tank is used for carrying out coagulation reaction on the mixture, the flocculation reaction tank is used for carrying out flocculation reaction on the mixture, the sedimentation concentration tank is used for carrying out sedimentation and concentration on the mixture, the mud scraper is used for scraping mud, the inclined tube separation area is used for separating suspended solids which are not precipitated in the sedimentation area, the cyclone separation device is used for separating and recycling substances discharged from the concentration area, the dosing device is used for adding a coagulant into the coagulation reaction tank and adding a flocculant into the flocculation reaction tank, the technical problem that the coarse separation system is troublesome in sewage treatment operation in the prior art is solved, the coarse separation effect on phosphorus-containing sewage is ideal, the phosphorus content in the treated sewage is in the order of 0.5 m/L, the solid sedimentation is fast, the separation precision is high, the mud drainage water content is low, and the treatment effect is superior to the prior art.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an intelligent coarse separation system according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a coagulation reaction tank; 2. a flocculation reaction tank; 3. a sedimentation and concentration tank; 31. a precipitation zone; 32. a concentration zone; 4. a sloped tube separation zone; 5. a cyclone separation device; 6. a dosing device; 7. a first mixer; 8. a second stirrer; 9. a mud scraper; 10. a guide cylinder; 11. a deflector; 12. a mud bucket; 13. and (5) a sludge storage pool.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, an intelligent coarse separation system according to the present utility model will now be described. The intelligent coarse separation system comprises a coagulation reaction tank 1, a flocculation reaction tank 2, a precipitation concentration tank 3, an inclined tube separation zone 4, a cyclone separation device 5 and a dosing device 6, wherein the upper part of the coagulation reaction tank 1 is provided with a water inlet, the lower part of the coagulation reaction tank is provided with a water outlet, a mixture of water and phosphorus to be subjected to coarse separation is contained in the coagulation reaction tank 1, and a first stirrer 7 for stirring the mixture is arranged in the coagulation reaction tank 1; the lower part of the flocculation reaction tank 2 is provided with a water inlet, the upper part of the flocculation reaction tank 2 is provided with a water outlet, the water inlet of the flocculation reaction tank 2 is in butt joint communication with the water outlet of the flocculation reaction tank 1, the mixture enters the flocculation reaction tank 2 after undergoing a coagulation reaction in the coagulation reaction tank 1, the flocculation reaction tank 2 is internally provided with a second stirrer 8 for stirring the mixture, and the flocculation reaction tank 2 is used for causing the mixture to undergo a flocculation reaction; the sedimentation and concentration tank 3 comprises a sedimentation area 31 positioned at the upper part and a concentration area 32 positioned at the lower part, the upper part of the sedimentation area 31 is provided with a water inlet which is mutually in butt joint and communicated with a water outlet of the flocculation reaction tank 2, the mixture enters the sedimentation area 31 after undergoing flocculation reaction in the flocculation reaction tank 2, the sedimentation area 31 is used for settling suspended solids in the mixture, the settled suspended solids enter the concentration area 32, and the concentration area 32 is used for concentrating the settled suspended solids; a mud scraper 9 with grid bars is arranged in the concentration zone 32, and the mud scraper 9 is used for scraping mud and accelerating concentration of suspended solids; the inclined tube separation zone 4 is arranged at the upper part of the sedimentation zone 31 and is used for separating suspended solids which are not precipitated in the sedimentation zone 31, a water outlet is arranged at the side part of the sedimentation zone 31 which is close to the inclined tube separation zone 4, and the mixture separated by the inclined tube separation zone 4 can flow out from the water outlet; the input end of the cyclone separation device 5 is communicated with the concentration area 32 and is used for separating and recovering substances discharged from the concentration area 32, and liquid separated by the cyclone separation device 5 can also flow into the flocculation reaction tank 2; the dosing device 6 is used for adding coagulant into the coagulation reaction tank 1 and flocculant into the flocculation reaction tank 2 respectively.
Compared with the prior art, the intelligent coarse separation system comprises a coagulation reaction tank 1, a flocculation reaction tank 2, a precipitation concentration tank 3, an inclined tube separation zone 4, a cyclone separation device 5 and a medicine adding device 6, wherein the coagulation reaction tank 1 is used for carrying out coagulation reaction on a mixture, the flocculation reaction tank 2 is used for carrying out flocculation reaction on the mixture, the precipitation concentration tank 3 is used for carrying out precipitation and concentration on the mixture, a mud scraper 9 is used for scraping mud, the inclined tube separation zone 4 is used for separating suspended solids which are not precipitated in the precipitation zone 31, the cyclone separation device 5 is used for separating and recycling substances discharged from the concentration zone 32, the medicine adding device 6 is used for adding a coagulant into the coagulation reaction tank 1 and a flocculant into the flocculation reaction tank 2, the technical problem that the coarse separation system is troublesome in sewage treatment operation in the prior art is solved, the coarse separation effect on phosphorus-containing sewage is ideal, the phosphorus content in the treated sewage is at a level of 0.5 m/L, the solid precipitation is fast, the separation accuracy is high, and the water content of the mud is superior to the prior art treatment effect.
The utility model is mainly applied to a coarse separation system for separating out total phosphorus from phosphorus-containing sewage; the adding amount of the coagulant and the flocculant is determined according to the volumes of the coagulation reaction tank 1 and the flocculation reaction tank 2, and the amount of the agent to be added is obtained through reasonable calculation, so that the coagulant and the flocculant can be furthest utilized in the treatment of the phosphorus-containing sewage, the content of phosphorus in the finally treated sewage is in the level of 0.5 mg/L, the content of phosphorus is reduced, and the treatment method is better than the treatment method for the content of phosphorus in the prior art. The substances which are not separated in the coarse separation system can be separated in the fine separation system, the content of phosphorus in the sewage treated by the fine separation system is in the level of 0.2 mg/L, and the phosphorus in the sewage passing through the fine separation system can reach the standard, thereby meeting the treatment requirement.
Specifically, the sedimentation area 31 and the concentration area 32 are an upper part and a lower part in the sedimentation and concentration tank 3, and the mixture can be sedimented and concentrated in the sedimentation and concentration tank 3 to finish the coarse separation of the phosphorus-containing sewage. The inclined tube separation has the functions of diversion, avoiding the transverse flow of water and reducing the influence of the transverse flow on the sedimentation effect (the transverse flow has a great influence on the sedimentation effect). In the chute separation zone 4, fine flocs are further removed on the chute. The clarified supernatant is discharged into a river channel or recycled after reaching the standard. Because the specific gravity of the flocs is large, the flocs have good precipitation performance, most suspended solids can be precipitated (more than 90 percent), and concentration is finished; the concentration of the concentrated sludge is generally 10-20 g/L. The inclined tube separation zone 4 improves the hydraulic ascending flow rate, saves space, can ensure excellent clarified effluent, and can avoid water flow short circuit in the whole inclined tube separation zone 4, so that precipitation is completed in an optimal state. The recovery efficiency of the cyclone separation device 5 is up to 99%, the pre-reaction of recovery and flocculant can be completed, the flocculation efficiency is improved, and the operation cost and investment are reduced.
In some embodiments, referring to fig. 1, a guide cylinder 10 is arranged in the middle of the flocculation reaction tank 2, a guide plate 11 is arranged at the bottom of the guide cylinder 10, a flocculant adding ring is arranged in the guide cylinder 10, the added flocculant is placed on the flocculant adding ring, flocculation reaction occurs in the guide cylinder 10, and the flocculation speed in the guide cylinder 10 is faster than the flocculation speed in the outside of the guide cylinder 10 by virtue of the stirring of a second stirrer 8, so that different flocculation energy differences are formed in the inside and outside of the guide cylinder 10. The flocculant addition ring is not shown in the figures, which can be readily understood.
Specifically, guide cylinder 10 is the tube-shape, and upper end and lower extreme all open, guide cylinder 10 passes through connecting piece fixed connection in flocculation reaction tank 2, and guide plate 11 is the round platform that falls, and the upper end is docked and communicates each other with the lower extreme of guide cylinder 10, and the lower extreme opening is towards flocculation reaction tank 2's bottom, and the flocculant adds the ring and is a circular plate, can hold or hold the flocculant, is convenient for make the inside mixture of guide cylinder 10 react with the flocculant, stirs through second mixer 8, can accelerate the emergence reaction. The stirring function is to make the small flocs form large flocs, and the large flocs are fully mixed without being destroyed.
The first stirrer 7 and the second stirrer 8 are all stirrers in the prior art, and each stirrer comprises a motor, a rotating shaft and blades, wherein the motor is arranged above the flocculation reaction tank 2 or the flocculation reaction tank 1, the rotating shaft is vertically arranged, the upper end of the motor is connected with the power output end of the motor, the lower end of the motor is connected with the blades, and the blades are arranged inside the flocculation reaction tank 2 or the flocculation reaction tank 1 and are used for stirring the mixture so as to accelerate coagulation or flocculation reaction.
In some embodiments, referring to fig. 1, the intelligent coarse separation system further includes a plurality of groups of detection devices, each group of detection devices being disposed at the water inlet of the coagulation reaction tank 1 and the water outlet of the sedimentation tank, for online detection of total phosphorus and suspended solids data in the mixture. The water inlet and the water outlet are detected in real time through the detection device, the content of total phosphorus and suspended solids in the mixture can be seen at any time, preparation is made for reasonably preparing the addition amount of the flocculating agent and the flocculating agent, the two are related and have interaction, and the beneficial effect of coarse separation can be realized only by intelligently calculating to obtain the addition amount of the flocculating agent or the flocculating agent. The detection means are not shown in the figures and can be easily understood.
In some embodiments, referring to fig. 1, the detection apparatus includes a total phosphorus detector for detecting total phosphorus in the mixture on-line and a suspended solids detector for detecting suspended solids in the mixture on-line. The total phosphorus detector and the suspended solid detector can be products in the prior art.
The detection device also comprises a flow monitor for monitoring flow, a temperature monitor for monitoring temperature, a pH value monitor for monitoring pH value and a turbidity meter for monitoring turbidity.
In some embodiments, referring to fig. 1, the intelligent rough separation system further includes a control panel for controlling the dosage of the medicine feeding apparatus 6, and the control panel is provided with a medicine feeding flow control button and a medicine feeding speed control button. Through manual operation control panel, can realize adding the medicament to the automatic in coagulation reaction pond 1 and the flocculation reaction pond 2, and the quantity of adding the medicament can be preset, just so can accomplish automatic dosing. The control panel is not shown in the figures and can be easily understood.
In some embodiments, referring to FIG. 1, the reaction time of the mixture in coagulation reaction tank 1 is 1-2 minutes and the residence time in flocculation reaction tank 2 is 20 minutes.
In some embodiments, referring to fig. 1, the dosing device 6 comprises two drug tanks containing coagulant and flocculant, respectively, and two dosing pumps; the input ends of the two dosing pumps are correspondingly communicated with the two medicine boxes through pipelines respectively, the output ends of the two dosing pumps are correspondingly communicated with the coagulation reaction tank 1 and the flocculation reaction tank 2 through pipelines respectively, and are used for pumping coagulant and flocculant into the coagulation reaction tank 1 and the flocculation reaction tank 2 respectively, and the pumping flow of the dosing pumps is controllable.
In some embodiments, referring to fig. 1, a sludge bucket 12 having an inverted trapezoid shape is disposed at the bottom of the concentration zone 32, the sludge scraper 9 scrapes the sludge into the sludge bucket 12, and a sludge pump is disposed at the bottom of the sludge bucket 12, and can suck the sludge in the sludge bucket 12 and discharge the sludge. The sludge hopper 12 has an inverted trapezoid shape, and can accommodate a certain amount of sludge, so that the sludge can be pumped or discharged by the sludge pump. The sludge pump is not shown in the drawings and can be easily understood.
In some embodiments, referring to fig. 1, the intelligent coarse separation system further includes a sludge storage tank 13, the sludge storage tank 13 is communicated with a sludge pump, the sludge output by the sludge pump is fed into the sludge storage tank, the cyclone separation device 5 is also communicated with the sludge storage tank 13, and the sludge separated by the cyclone separation device 5 is also fed into the sludge storage tank 13. The flocculation reaction tank has the advantages that the sludge concentration of the flocculation reaction tank 2 is increased, the use efficiency of the medicament is improved, and the medicament consumption is reduced.
In some embodiments, referring to fig. 1, the dosing pump is a variable frequency type, and a solenoid valve and a flowmeter are arranged on a pipeline at the output end of the dosing pump, the solenoid valve is used for controlling dosing amount, and the flowmeter is used for monitoring current dosing flow.
The utility model is one-time separation of sewage separation, and has the advantages of high precipitation efficiency, stable and excellent effluent quality, small occupied area, strong shock resistance, flexible and reliable operation, running consumption saving and the like.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (4)
1. An intelligent coarse separation system, comprising:
the upper part of the coagulation reaction tank is provided with a water inlet, the lower part of the coagulation reaction tank is provided with a water outlet, the interior of the coagulation reaction tank is provided with a mixture of water and phosphorus to be subjected to coarse separation, and a first stirrer for stirring the mixture is arranged in the coagulation reaction tank;
the flocculation reaction tank is internally provided with a second stirrer for stirring the mixture, and the flocculation reaction tank is used for enabling the mixture to undergo flocculation reaction;
the sedimentation and concentration tank comprises a sedimentation area positioned at the upper part and a concentration area positioned at the lower part, the upper part of the sedimentation area is provided with a water inlet which is mutually in butt joint and communicated with a water outlet of the flocculation reaction tank, the mixture enters the sedimentation area after undergoing flocculation reaction in the flocculation reaction tank, the sedimentation area is used for settling suspended solids in the mixture, the settled suspended solids enter the concentration area, and the concentration area is used for concentrating the settled suspended solids; a mud scraper with grid bars is arranged in the concentration area and is used for scraping mud and accelerating concentration of suspended solids;
the inclined tube separation zone is arranged at the upper part of the sedimentation zone and is used for separating suspended solids which are not precipitated in the sedimentation zone, a water outlet is arranged at the side part of the sedimentation zone, which is close to the inclined tube separation zone, and the mixture separated by the inclined tube separation zone can flow out from the water outlet;
the input end of the cyclone separation device is communicated with the concentration area and is used for separating and recycling substances discharged from the concentration area, and liquid separated by the cyclone separation device can also flow into the flocculation reaction tank;
the dosing device is respectively used for adding coagulant into the coagulation reaction tank and flocculant into the flocculation reaction tank;
a guide cylinder is arranged in the middle part in the flocculation reaction tank, a guide plate is arranged at the bottom of the guide cylinder, a flocculant adding ring is arranged in the guide cylinder, the added flocculant is placed on the flocculant adding ring, flocculation reaction occurs in the guide cylinder, and the flocculation speed in the guide cylinder is higher than the flocculation speed outside the guide cylinder by virtue of the stirring of the second stirrer so as to form different flocculation energy differences inside and outside the guide cylinder;
the intelligent coarse separation system further comprises a control panel for controlling the dosage of the medicine adding device, and a medicine adding flow control button and a medicine adding speed control button are arranged on the control panel; the sludge pump at the bottom of the concentration zone is communicated with a sludge storage pool and a cyclone separation device, and the sludge separated by the cyclone separation device is conveyed into the sludge storage pool;
the intelligent coarse separation system further comprises:
the multiple groups of detection devices are respectively arranged at the water inlet of the coagulation reaction tank and the water outlet of the sedimentation tank and are used for detecting the total phosphorus and suspended solid data in the mixture on line;
the bottom of the concentration area is provided with a sludge bucket which is in an inverted trapezoid shape, the sludge scraper scrapes sludge into the sludge bucket, the bottom of the sludge bucket is provided with a sludge pump, and the sludge pump can suck the sludge in the sludge bucket and discharge the sludge outwards;
the dosing device comprises:
two medicine boxes respectively containing coagulant and flocculant;
the input ends of the two dosing pumps are correspondingly communicated with the two medicine boxes through pipelines respectively, the output ends of the two dosing pumps are correspondingly communicated with the coagulation reaction tank and the flocculation reaction tank through pipelines respectively, and are used for pumping coagulant and flocculant into the coagulation reaction tank and the flocculation reaction tank respectively, and the pumping flow of the dosing pumps can be controlled;
the intelligent coarse separation system further comprises a sludge storage pool, the sludge storage pool is communicated with the sludge pump, sludge output by the sludge pump reaches the sludge storage pool, the cyclone separation device is further communicated with the sludge storage pool, and the sludge separated by the cyclone separation device is also conveyed into the sludge storage pool.
2. An intelligent coarse separation system according to claim 1 wherein the detection means comprises a total phosphorus detector for on-line detection of total phosphorus in the mixture and a suspended solids detector for on-line detection of suspended solids in the mixture.
3. An intelligent coarse separation system according to claim 1, wherein the reaction time of the mixture in the coagulation reaction tank is 1-2 minutes and the residence time in the flocculation reaction tank is 20 minutes.
4. The intelligent coarse separation system of claim 1, wherein the dosing pump is variable frequency, a solenoid valve and a flowmeter are arranged on a pipeline at the output end of the dosing pump, the solenoid valve is used for controlling dosing amount, and the flowmeter is used for monitoring current dosing flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122407529.3U CN219823894U (en) | 2021-09-30 | 2021-09-30 | Intelligent coarse separation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122407529.3U CN219823894U (en) | 2021-09-30 | 2021-09-30 | Intelligent coarse separation system |
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| CN219823894U true CN219823894U (en) | 2023-10-13 |
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| CN202122407529.3U Active CN219823894U (en) | 2021-09-30 | 2021-09-30 | Intelligent coarse separation system |
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