CN205288718U - Full -automatic addition system of flocculating agent - Google Patents
Full -automatic addition system of flocculating agent Download PDFInfo
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- CN205288718U CN205288718U CN201521122733.9U CN201521122733U CN205288718U CN 205288718 U CN205288718 U CN 205288718U CN 201521122733 U CN201521122733 U CN 201521122733U CN 205288718 U CN205288718 U CN 205288718U
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Abstract
The utility model belongs to the technical field of the concentrated quick -witted flocculating agent of middlings adds control, concretely relates to full -automatic addition system of flocculating agent, it includes the controller, the loading hopper, dissolve the case in advance, case and explosive box dispense, the loading hopper passes through the feeder and is connected with material powder heating device, material powder in the material powder heating device is through the air -blower, the conveying pipe gets into and dissolves the case in advance, it is connected with the case that dispenses to dissolve the case in advance, the case that dispenses passes through the second motorised valve and is connected with the explosive box, the discharge gate of explosive box passes through the discharging pipe and is connected with coal slime water storage pool, be equipped with the flow measurement ware on the discharge gate, be equipped with third motorised valve and dosing pump on the discharging pipe, coal slime water storage pool passes through coal slime water outlet pipe and connects coal slime water detection device, still include the infrared remote control unit, the infrared remote control unit is connected to the input of controller, flow measurement ware and coal slime water detection device's output, display, alarm and dosing pump are connected to the output of controller. The utility model has the advantages of degree of automation is high, can realize remote control.
Description
Technical field
The utility model belongs to middle coal thickener flocculant and adds control technology field, is specifically related to the full-automatic add-on system of a kind of flocculant.
Background technology
At present, flocculant is used widely in Coal Slurry in Preparation Plant is processed, and dry powder-shaped flocculating agent formulation is become to certain density solution, and reasonably add in concentration basin, can reduce on the one hand the turbidity of overflow water; Can accelerate on the other hand the sinking speed of coal slime, enhance productivity. But in actual applications, preparation and the adding procedure of flocculant have the following disadvantages: 1, do not possess remote control function, need staff to arrive field control equipment working state; 2, aspect flocculant interpolation control, automaticity is low, by controlling manually, affected by extraneous human factor larger, the interpolation of flocculant and black water concentration can not keep good proportionate relationship, and addition is too much or very few, finally all can have influence on the quality of cleaned coal and other products of coal, easily cause waste, and workman's labour intensity is large.
Utility model content
The purpose of this utility model is to provide the full-automatic add-on system of full-automatic flocculant that a kind of flocculant solution preparation is even, automaticity is high.
For achieving the above object, the utility model is by the following technical solutions: the full-automatic add-on system of a kind of flocculant, comprise controller, loading hopper, pre-molten case, join the Scatula of flocculant and for storing the explosive box of flocculant for making, material powder in described loading hopper enters material powder heater by feed appliance, the discharging opening of described material powder heater is connected with air blast, the air outlet of described air blast is connected with one end of feed pipe, the other end of described feed pipe stretches in pre-molten case, described pre-molten case is provided with water inlet pipe, described water inlet pipe is connected with cistern by the first motor-driven valve, the discharging opening of described pre-molten case is connected with the charging aperture of Scatula, in described Scatula, be provided with the first liquid level detector, Scatula is provided with agitator, the discharging opening of Scatula is connected with the charging aperture of explosive box by the second motor-driven valve, in described explosive box, be provided with the second liquid level detector, the discharging opening of explosive box is deposited pond by discharge nozzle and black water and is connected, described discharge nozzle is provided with the 3rd motor-driven valve, described black water is deposited pond and is connected black water checkout gear by black water efferent duct, described the first liquid level detector is connected with the output of the second liquid level detector and the input of controller, and the output of described controller is connected with air blast, agitator, the first motor-driven valve, the second motor-driven valve and the 3rd motor-driven valve, also comprise infrared remote control unit, described explosive box discharging opening place is provided with flow detector, described discharge nozzle is provided with dosing pump, described black water checkout gear comprises sinking speed detector, and the input of described controller connects the output of infrared remote control unit, flow detector, sinking speed detector, the output of described controller connects display and for pointing out the alarm of Scatula overflow, the output of described controller is also connected with dosing pump by frequency converter.
The output of described controller connects host computer.
On described host computer, be connected with mobile communication module.
On described host computer, be connected with printer.
Described material powder heater comprises material powder heater and Temperature Detector, and the input of described material powder heater is connected with the output of controller, and the output of described Temperature Detector is connected with the input of controller.
Described feed pipe is a bended pipe, and one end that feed pipe stretches into pre-molten case is provided with the material powder shower nozzle for spreading material powder.
The delivery port of described water inlet pipe is provided with atomizer.
The bottom of described explosive box is provided with bracing or strutting arrangement, and described bracing or strutting arrangement comprises four support bars, and support bar below is connected with adjustable for height support cap, and support bar below is also connected with universal wheel.
The top of described explosive box is provided with observation panel.
Compared with prior art, the beneficial effects of the utility model are:
1, the infrared remote control unit in the utility model can be realized the duty of tele-control system, and it is convenient to control, and controls to scene without workman person; The flow information measuring is sent to controller by flow detector, after controller analyzing and processing, flow information shown on display, facilitates staff to understand at any time the situation of flocculant solution use amount; Display also shows the liquid level information in the temperature information in material powder heater, liquid level information and the explosive box in Scatula, facilitates staff to learn corresponding information, understands system running state; In the time that the solution in Scatula reaches overflow alarm bit, controller control alarm equipment alarm, reminds staff to notice that scene observes conditions, and avoids Scatula liquid level to continue to rise and overflows from spout hole, causes the wasting of resources; Sinking speed detector by the sinking speed Real-time Feedback of the current black water detecting to controller, controller is by the measurement sinking speed and the comparative analysis of standard sinking speed that receive, and regulate the rotating speed of dosing pump by frequency converter according to analysis result, and then regulate to the amount of adding flocculant solution in black water, make black water effect of settling reach best;
2, the controller in the utility model and host computer communication connection, can complete the relevant parameter in controller is adjusted to setting by host computer, and can check liquid level information, the warning message of explosive box and Scatula, the consumption information of flocculant solution by host computer;
3, the mobile communication module in the utility model is connected with host computer by communication network, mobile communication module is mobile phone, for receiving the warning message from host computer, staff is not at the scene in time, also can learn in time warning message by mobile communication module, facilitate staff to make in time effective counter-measure;
4, the printer in the utility model needs to retain information for future use for printing, for example, flocculant solution consumption on duty is printed, for later stage Optimized Operation and sophisticated systems provide reference;
5, the material powder heater in the utility model is used for heating material powder, easily lumps because material powder makes moist, and adopts material powder heater that material powder is heated to 50～60 DEG C, medicinal powder is kept dry state, and at this temperature, material powder is soluble in water, make the flocculant solution of preparation more even; Temperature Detector is for detection of the internal temperature of material powder heater, and the temperature signal detecting is sent to controller, controller carries out analyzing and processing to the received signal, when the internal temperature of material powder heater is during higher than preset upper limit temperature, controller control material powder heater quits work; When the internal temperature of material powder heater is during lower than default lower limit temperature, the work of controller control material powder heater starting, ensures that material powder heater internal temperature, in preset temperature range, ensures the heating effect of material powder;
6, the material powder shower nozzle in the utility model is used for spreading material powder, before contacting with water, material powder spread by material powder shower nozzle, after the atomizer of water by the delivery port of water inlet pipe, be dispersed as vaporific, material powder of diffusion can fully contact with spray water, improve the dissolved efficiency of material powder and water, not only make to expect that powder and water fully dissolve in advance, and effectively avoided dry material pruinescence to be blown in air, pollute and harm to people;
7, the bottom of the explosive box in the utility model is provided with bracing or strutting arrangement, bracing or strutting arrangement comprises four support bars, support bar below is connected with adjustable for height support cap, and support bar below is also connected with universal wheel, can make to support on cap move or move down by the screw on rotary support bar, in the time of needs position of mobile equipment, can rotate up screw, make to support on cap and move and depart from ground, universal wheel contacts with ground, by universal wheel, equipment moving is arrived to desired location, mobile efficient and convenient; When equipment moves on to after assigned address, can be rotated down screw, make to support that cap moves down and tightly contact with ground, universal wheel departs from ground, by regulating the position of four screws can make equipment in a poised state, the while height of conditioning equipment as required, keeps a safe distance equipment and ground, the corrosion that keeps away from moisture, highly easy to adjust;
8, the observation panel at the explosive box top in the utility model is convenient to staff and is checked explosive box inner case.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is control principle drawing of the present utility model.
Detailed description of the invention
The utility model discloses the full-automatic add-on system of a kind of flocculant, as shown in Figure 1-2, comprise controller, loading hopper, pre-molten case 6, join the Scatula 8 of flocculant and for storing the explosive box 9 of flocculant for making, material powder in loading hopper 1 enters material powder heater 3 by feed appliance and heats, the design's feed appliance adopts feeding screw 2, material powder heater 3 comprises material powder heater and Temperature Detector, the input of material powder heater is connected with the output of controller, the output of Temperature Detector is connected with the input of controller, material powder heater is used for heating material powder, because making moist, material powder easily lumps, adopt material powder heater that material powder is heated to 50～60 DEG C, medicinal powder is kept dry state, and at this temperature, material powder is soluble in water, make the flocculant solution of preparation more even, Temperature Detector is for detection of the internal temperature of material powder heater 3, and the temperature signal detecting is sent to controller, controller carries out analyzing and processing to the received signal, when the internal temperature of material powder heater 3 is during higher than preset upper limit temperature, controller control material powder heater quits work, when the internal temperature of material powder heater 3 is during lower than default lower limit temperature, the work of controller control material powder heater starting, ensures that material powder heater 3 internal temperatures, in preset temperature range, ensure the heating effect of material powder.
The discharging opening of material powder heater 3 is connected with air blast 4, the air outlet of air blast 4 is connected with one end of feed pipe 5, the other end of feed pipe 5 stretches into pre-molten case 6, feed pipe 5 is a bended pipe, one end that feed pipe 5 stretches into pre-molten case 6 is provided with the material powder shower nozzle for spreading material powder, makes to expect to be diffused by material powder shower nozzle before powder contacts with water. pre-molten case 6 is provided with water inlet pipe, water inlet pipe is connected with cistern by the first motor-driven valve 7, the water outlet that the delivery port of water inlet pipe stretches into pre-molten case 6 and water inlet pipe is provided with atomizer, water is dispersed as after by atomizer vaporific, material powder by the diffusion of material powder shower nozzle can fully contact with spray water, adopt a pre-molten case 6, make to expect that powder and water are pre-mixed dissolving, improve the dissolved efficiency of material powder and water, and effectively avoid dry material pruinescence to be blown in air, pollute and harm to people, the discharging opening of pre-molten case 6 is connected with the charging aperture of Scatula 8.
In Scatula 8, be provided with the first liquid level detector, the output of the first liquid level detector is connected with the input of controller, the liquid level information of the Scatula detecting 8 is sent to controller by the first liquid level detector, and the first liquid level detector comprises overflow alarm bit, a high position, meta and four kinds of liquid level signals of low level. Scatula 8 is provided with agitator 81, and Scatula 8 sides are provided with spout hole 82 and the first outage 83, and in the time that the liquid level in Scatula 8 continues to rise to a certain degree, unnecessary liquid flows out from spout hole 82; The first outage 83 is discharged the waste liquid in Scatula 8 when cleaning Scatula 8; The discharging opening of Scatula 8 is connected with the charging aperture of explosive box 9 by the second motor-driven valve 10.
In explosive box 9, be provided with the second liquid level detector, the output of the second liquid level detector is connected with the input of controller, the liquid level information of the Scatula detecting 9 is sent to controller by the second liquid level detector, and the second liquid level detector comprises high-order and two kinds of liquid level signals of low level. The top of explosive box 9 is provided with observation panel 92, and observation panel 92 is convenient to staff and is checked explosive box 9 inner cases; The side of explosive box 9 is provided with second outage 91 of the waste liquid in explosive box 9 being discharged when cleaning explosive box 9. Explosive box 9 bottoms are provided with bracing or strutting arrangement, bracing or strutting arrangement comprises four support bars 93, support bar 93 belows are connected with adjustable for height support cap 95, and support bar 93 belows are also connected with universal wheel, can make to support on cap 95 move or move down by the screw 94 on rotary support bar 93, in the time of the mobile complete equipment of needs position, can rotate up screw 94, make to support on cap 95 and move and depart from ground, universal wheel contacts with ground, by universal wheel, complete equipment is moved to desired location, mobile efficient and convenient; When equipment moves on to after assigned address, can be rotated down screw 94, making to support cap 95 moves down and tightly contacts with ground, universal wheel departs from ground, by regulating the position of four screws 94 can make equipment in a poised state, the while height of conditioning equipment as required, keeps a safe distance explosive box 9 and ground, the corrosion that keeps away from moisture, highly easy to adjust.
Explosive box 9 discharging opening places are provided with flow detector 11, the discharging opening of explosive box 9 is deposited pond 14 by discharge nozzle and black water and is connected, discharge nozzle is provided with the 3rd motor-driven valve 12 and dosing pump 13, black water is deposited pond 14 and is connected black water checkout gear 16 by black water efferent duct 15, black water checkout gear 16 comprises sinking speed detector, sinking speed detector is by the sinking speed Real-time Feedback of the current black water detecting to controller, and controller is by the measurement sinking speed and the comparative analysis of standard sinking speed that receive.
The input of controller is also connected with infrared remote control unit, and infrared remote control unit can be realized the duty of tele-control system, and it is convenient to control, and controls to scene without workman person. Above-mentioned the first motor-driven valve 7, the second motor-driven valve 10, the 3rd motor-driven valve 12, air blast 4, agitator 81, feeding screw 2 are all connected with the output of controller, and the output of controller is also connected with alarm, frequency converter, very first time relay and second time relay.
Controller shows each detected parameters on display, and controller also communicates to connect with host computer, can adjust setting to the relevant parameter in controller by host computer, and can check liquid level information, the alarm equipment alarm information of explosive box 9 and Scatula 8, the consumption information of flocculant solution by host computer. On host computer, connect printer and mobile communication module, mobile communication module is mobile phone, for receiving the warning message from host computer, even if staff is not at the scene, also can learn in time warning message by mobile communication module, facilitate staff to make in time effective counter-measure; Printer needs to retain information for future use for printing, for example, print Flocculants solution consumption amount, for later stage Optimized Operation and sophisticated systems provide reference.
Operation principle: when the liquid level in Scatula 8 is during in low level, start to prepare flocculant solution, controller control the first motor-driven valve 7 is opened, the second motor-driven valve 10 cuts out, water enters Scatula 8 through pre-molten case 6, meanwhile, controller control air blast 4 is started working, and clears up in advance and dry up residue and hydrone in feed pipe 5; In the time that the liquid level in Scatula 8 reaches meta, controller control feeding screw 2, material powder heater and agitator 81 are started working, very first time relay starts timing simultaneously, material powder in hopper 1 enters heater 3 by feeding screw 2 and heats, material powder after heating enters batcher 8 through pre-molten case 6, when very first time relay timing time arrives, feeding screw 2 quits work; In the time that the liquid level in batcher 8 is a high position, controller control the first motor-driven valve 7 cuts out, stop into water, air blast 4 quits work simultaneously, and agitator 81 still works on, and second time relay starts timing, when the second time relay timing time arrives, agitator 81 quits work, and flocculant solution has been prepared, and preparing flocculant solution, to be stored in Scatula 8 interior for subsequent use; If when the liquid level in Scatula 8 attains to a high place, equipment breaks down, for example the first motor-driven valve 7 does not cut out, the liquid level in Scatula 8 will continue to rise, while rising to overflow alarm bit, controller control alarm equipment alarm, host computer display alarm information, mobile communication module receives warning message simultaneously, reminds staff to note observing conditions.
The second liquid level detector is for detection of the liquid level in explosive box 9, when the liquid level in explosive box 9 is during in a high position, controller control the second motor-driven valve 10 cuts out, stop the flocculant solution in Scatula 8 to enter explosive box 9, when the liquid level in explosive box 9 is during in low level, controller control the second motor-driven valve 10 is opened, and makes the flocculant solution in Scatula 8 enter explosive box 9; Scatula 8 is arranged with 9 points of explosive boxs, in normal use procedure, can not cause the phenomenon that flocculant solution is in short supply, has improved operating efficiency.
The flow detector 11 at explosive box 9 discharging opening places, flow detector 11 detects the flow information of discharging opening in real time, and the information detecting is sent to controller, after controller analyzing and processing, the flow information of the outflow of discharging opening is shown on display, facilitate staff to understand at any time flocculant solution consumption. When needs are deposited pond 14 while adding flocculant to black water, controller control the 3rd motor-driven valve 12 is opened, simultaneously, the current black water water quality parameter signal canonical parameter information inner with it that controller detects according to the black water checkout gear 16 receiving compares analysis, regulate the rotating speed of dosing pump 13 by frequency converter according to analysis result, and then the addition of adjusting flocculant solution, make the effect of settling of black water reach best.
The Temperature Detector relating in the utility model, the first liquid level detector, the second liquid level detector, flow detector 11 and black water checkout gear 16 are prior art, wherein black water checkout gear 16 can be the water turbidity detector of the detection of the overflow water turbidity to black water, also can be the sinking speed detector of the detection to current black water sinking speed, what the utility model adopted is the sinking speed detector that current black water sinking speed is detected, sinking speed detector by the sinking speed Real-time Feedback of the current black water detecting to controller, controller is by the measurement sinking speed and the comparative analysis of standard sinking speed that receive, in the time measuring sinking speed and standard sinking speed value zero deflection, dosing pump rotating speed is constant, be that chemical feeding quantity is constant: in the time that measured value is less than standard value, illustrate that now the consumption of flocculant is somewhat few, its deviation is pressed after the feedback control algorithm computing in controller, control accuracy to system is revised, control the faster rotational speed of dosing pump 13, increase the addition of flocculant solution, otherwise, in the time that measured value is greater than standard value, illustrating that now the consumption of flocculant is a little many, the rotating speed of controller control dosing pump 13 slows down, and reduces the addition of flocculant solution, makes effect of settling reach best.
The preparation of the utility model flocculant solution, add whole automations, automaticity is high, the addition control of flocculant solution accurately, can realize the advantages such as Long-distance Control.
Claims (9)
1. the full-automatic add-on system of flocculant, comprise controller, loading hopper, pre-molten case, join the Scatula of flocculant and for storing the explosive box of flocculant for making, material powder in described loading hopper enters material powder heater by feed appliance, the discharging opening of described material powder heater is connected with air blast, the air outlet of described air blast is connected with one end of feed pipe, the other end of described feed pipe stretches in pre-molten case, described pre-molten case is provided with water inlet pipe, described water inlet pipe is connected with cistern by the first motor-driven valve, the discharging opening of described pre-molten case is connected with the charging aperture of Scatula, in described Scatula, be provided with the first liquid level detector, Scatula is provided with agitator, the discharging opening of Scatula is connected with the charging aperture of explosive box by the second motor-driven valve, in described explosive box, be provided with the second liquid level detector, the discharging opening of explosive box is deposited pond by discharge nozzle and black water and is connected, described discharge nozzle is provided with the 3rd motor-driven valve, described black water is deposited pond and is connected black water checkout gear by black water efferent duct, described the first liquid level detector is connected with the output of the second liquid level detector and the input of controller, and the output of described controller is connected with air blast, agitator, the first motor-driven valve, the second motor-driven valve and the 3rd motor-driven valve, it is characterized in that: also comprise infrared remote control unit, described explosive box discharging opening place is provided with flow detector, described discharge nozzle is provided with dosing pump, described black water checkout gear comprises sinking speed detector, and the input of described controller connects the output of infrared remote control unit, flow detector, sinking speed detector, the output of described controller connects display and for pointing out the alarm of Scatula overflow, the output of described controller is also connected with dosing pump by frequency converter.
2. the full-automatic add-on system of flocculant as claimed in claim 1, is characterized in that: the output of described controller connects host computer.
3. the full-automatic add-on system of flocculant as claimed in claim 2, is characterized in that: on described host computer, be connected with mobile communication module.
4. the full-automatic add-on system of flocculant as claimed in claim 3, is characterized in that: on described host computer, be connected with printer.
5. the full-automatic add-on system of flocculant as described in as arbitrary in claim 1-4, it is characterized in that: described material powder heater comprises material powder heater and Temperature Detector, the input of described material powder heater is connected with the output of controller, and the output of described Temperature Detector is connected with the input of controller.
6. the full-automatic add-on system of flocculant as claimed in claim 5, is characterized in that: described feed pipe is a bended pipe, and one end that feed pipe stretches into pre-molten case is provided with the material powder shower nozzle for spreading material powder.
7. the full-automatic add-on system of flocculant as claimed in claim 6, is characterized in that: the delivery port of described water inlet pipe is provided with atomizer.
8. the full-automatic add-on system of flocculant as claimed in claim 7, it is characterized in that: the bottom of described explosive box is provided with bracing or strutting arrangement, described bracing or strutting arrangement comprises four support bars, and support bar below is connected with adjustable for height support cap, and support bar below is also connected with universal wheel.
9. the full-automatic add-on system of flocculant as claimed in claim 8, is characterized in that: the top of described explosive box is provided with observation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122733.9U CN205288718U (en) | 2015-12-31 | 2015-12-31 | Full -automatic addition system of flocculating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122733.9U CN205288718U (en) | 2015-12-31 | 2015-12-31 | Full -automatic addition system of flocculating agent |
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| Publication Number | Publication Date |
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| CN205288718U true CN205288718U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122733.9U Expired - Fee Related CN205288718U (en) | 2015-12-31 | 2015-12-31 | Full -automatic addition system of flocculating agent |
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| CN (1) | CN205288718U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423585A (en) * | 2016-11-30 | 2017-02-22 | 丹东东方测控技术股份有限公司 | Plunger type flotation chemical feeding machine |
| CN107640832A (en) * | 2017-10-27 | 2018-01-30 | 江苏永钢集团有限公司 | A kind of boiler-steam dome chemicals dosing plant |
| CN108255056A (en) * | 2017-12-29 | 2018-07-06 | 武汉长江仪器自动化研究所有限公司 | Water factory's intelligent dosing control system and its control method |
| CN109293068A (en) * | 2018-11-12 | 2019-02-01 | 中铁十四局集团大盾构工程有限公司 | A kind of shield slurry processing system and processing method |
| CN111686509A (en) * | 2020-06-22 | 2020-09-22 | 广州南档科技有限公司 | Sewage treatment sedimentation tank for environmental protection field |
| CN112624558A (en) * | 2020-11-30 | 2021-04-09 | 天津渤化永利化工股份有限公司 | Novel combined-alkali waste mud separation and removal method |
| CN114455744A (en) * | 2022-02-16 | 2022-05-10 | 梁欣丽 | Intelligent mine water treatment device for underground coal mine |
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2015
- 2015-12-31 CN CN201521122733.9U patent/CN205288718U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423585A (en) * | 2016-11-30 | 2017-02-22 | 丹东东方测控技术股份有限公司 | Plunger type flotation chemical feeding machine |
| CN107640832A (en) * | 2017-10-27 | 2018-01-30 | 江苏永钢集团有限公司 | A kind of boiler-steam dome chemicals dosing plant |
| CN108255056A (en) * | 2017-12-29 | 2018-07-06 | 武汉长江仪器自动化研究所有限公司 | Water factory's intelligent dosing control system and its control method |
| CN109293068A (en) * | 2018-11-12 | 2019-02-01 | 中铁十四局集团大盾构工程有限公司 | A kind of shield slurry processing system and processing method |
| CN111686509A (en) * | 2020-06-22 | 2020-09-22 | 广州南档科技有限公司 | Sewage treatment sedimentation tank for environmental protection field |
| CN111686509B (en) * | 2020-06-22 | 2021-12-17 | 广州同藜环境科技有限公司 | Sewage treatment sedimentation tank for environmental protection field |
| CN112624558A (en) * | 2020-11-30 | 2021-04-09 | 天津渤化永利化工股份有限公司 | Novel combined-alkali waste mud separation and removal method |
| CN114455744A (en) * | 2022-02-16 | 2022-05-10 | 梁欣丽 | Intelligent mine water treatment device for underground coal mine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20161231 |