Lime adding system
By setting up vibrators, heaters and flushing pipes in the conveying pipelines, discharge pipelines and loading pipelines of the lime feeding system, and automatically control them using a PLC controller, the problems of pipeline blockage, chemical residues and silo discharge interruption in the system are solved, and efficient operation and maintenance costs of the system are reduced.
Patent Information
- Application Number
- CN202421404480.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing lime loading system is prone to pipeline blockage, lime agent residues and silo discharge interruptions after long-term operation, resulting in high maintenance costs and difficult handling.
A lime feeding system is designed, by setting up a vibrator on the conveying pipeline, setting up a heater in the feeding pipeline, and setting up a flushing pipeline in the feeding pipeline, combining with a PLC controller to achieve automatic vibration, heating and flushing to avoid material agglomeration and drug residues.
It effectively prevents pipeline blockage and chemical residues, ensures the normal transportation and injection of materials, reduces maintenance costs, and ensures the continuous operation of the system.
Smart Images
Figure CN222961224U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater treatment, in particular to a lime dosing system. Background Art
[0002] In the process of wastewater treatment, especially industrial wastewater treatment, since acidic substances, heavy metal ions and other pollutants often exist in the wastewater, it is often necessary to add lime to the wastewater to be treated to adjust the pH value of the water body and remove the pollutants in the water body. Specifically, lime (calcium hydroxide) is added to the water, and the alkalinity of calcium hydroxide is used to neutralize the acidic substances in the water. At the same time, chemical reactions occur with some pollutants, causing the pollutants to precipitate or be adsorbed by the precipitate to achieve the purpose of purifying the water quality. At present, the industry mainly uses a lime dosing system to add lime to the wastewater to be treated. It transports lime to the silo through a material transfer pipeline, and further discharges the material from the silo into the medicine pool for stirring. Subsequently, a metering pump adds the stirred and mixed lime water to the water body through a dosing pipeline. In this lime dosing system, as the operation time of the system prolongs, lime is prone to caking in the material transfer pipeline. When the climate changes greatly, lime is also prone to getting damp and caking in the pipeline, resulting in pipeline blockage and uneven chemical dosing. It is necessary to regularly knock on the pipeline manually to ensure the normal addition of lime, and the maintenance cost of the pipeline is relatively high. Moreover, when it is not used for a long time or the dosing is stopped, lime solution will remain in the dosing pipeline. The treatment of this residual solution is difficult, and it has a great impact on the subsequent operation of the system. In addition, after the silo is used for a period of time, materials will accumulate in the silo, forming cavities or arches in the silo wall, which will cause the material discharge from the silo to be interrupted and affect the effective addition of materials. Summary of the Utility Model
[0003] Based on this, in view of the above deficiencies, it is necessary to provide a lime dosing system that can prevent pipeline blockage, reduce the residue of the solution in the dosing pipeline, and avoid the interruption of material discharge from the silo.
[0004] A lime dosing system includes:
[0005] A first silo, in which lime is stored. A delivery pump is arranged at the discharging end of the first silo, and a first vibrator is fixed on the outer surface of the first silo;
[0006] A delivery pipeline, the input end of which is communicated with the output end of the delivery pump and receives the material transported by the delivery pump. A second vibrator for driving the delivery pipeline to vibrate is fixed on the outer surface of the delivery pipeline, and a first feeder is arranged at the output end of the delivery pipeline;
[0007] A second silo, which is arranged at the output end of the first feeder and receives the material transported by the first feeder. A third vibrator for driving the second silo to vibrate is fixed on the outer surface of the second silo;
[0008] A blanking pipeline, the input end of the blanking pipeline is communicated with the blanking end of the second bin, the length direction of the blanking pipeline is perpendicular to the height direction of the second bin, and a second feeder and a heater for heating the blanking pipeline are arranged in the blanking pipeline;
[0009] A medicine pool, which is used to access clean water and receive the materials transported by the second feeder, and a stirrer for stirring the materials and clean water to form a medicine is arranged in the medicine pool;
[0010] A dosing pipeline, the input end of the dosing pipeline is communicated with the output end of the medicine pool, and a lime dosing pump for sending the medicine in the medicine pool into the dosing pipeline is arranged at the input end of the dosing pipeline. The output end of the dosing pipeline corresponds to the wastewater treatment container, and a flushing port communicated with the inner cavity of the dosing pipeline is arranged on the side wall of the dosing pipeline;
[0011] A flushing pipeline, which is located beside the dosing pipeline. The input end of the flushing pipeline is used to access flushing water, and the output end of the flushing pipeline is fixed on the dosing pipeline and communicated with the flushing port;
[0012] A controller, which is electrically connected to the conveying pump, the first vibrating device, the second vibrating device, the first feeder, the third vibrating device, the second feeder, the heater, the stirrer and the lime dosing pump respectively.
[0013] In one embodiment, the first vibrating device, the second vibrating device and the third vibrating device are all three-phase vibrating motors.
[0014] In one embodiment, the conveying pump is a screw conveyor, and the first feeder and the second feeder are both screw feeders.
[0015] In one embodiment, the second feeder includes a first rotating shaft housed in the blanking pipeline, a spiral blade fixed on the first rotating shaft and arranged along the axial direction of the first rotating shaft, and a first driving motor located outside the blanking pipeline and driving the first rotating shaft to rotate. A spiral feeding channel is formed by enclosing the outer surface of the first rotating shaft, the spiral blade and the inner surface of the blanking pipeline; The heater is fixed in the blanking pipeline, or fixed on the first rotating shaft, or fixed on the spiral blade.
[0016] In one embodiment, the lime dosing system further includes a water inlet pipe communicated with an external water storage device or a water supply system and used for conveying clean water to the medicine pool. A first solenoid valve electrically connected to the controller is arranged on the water inlet pipe, and a flow meter electrically connected to the controller is arranged at one end of the water inlet pipe adjacent to the medicine pool.
[0017] In one embodiment, a second solenoid valve electrically connected to the controller is arranged on the flushing pipeline.
[0018] In one embodiment, at least two first level sensors are provided at the discharging end of the first bin, and each first level sensor is located at the same horizontal height; at least two second level sensors are provided at the discharging end of the second bin, and each second level sensor is located at the same horizontal height.
[0019] In one embodiment, a first anti-arching feeder is further provided in the first bin. The first anti-arching feeder includes a second rotating shaft inserted into the first bin and extending along the height direction of the first bin, a plurality of first flexible scrapers arranged at intervals along the axial direction of the second rotating shaft and fixedly connected to the second rotating shaft respectively, and a second driving motor for driving the second rotating shaft to rotate. The first flexible scraper extends along the radial direction of the second rotating shaft, and the angle between adjacent first flexible scrapers is non-zero.
[0020] In one embodiment, a second anti-arching feeder is further provided in the second bin. The second anti-arching feeder includes a third rotating shaft inserted into the second bin and extending along the height direction of the second bin, a plurality of second flexible scrapers arranged at intervals along the axial direction of the third rotating shaft and fixedly connected to the third rotating shaft respectively, and a third driving motor for driving the third rotating shaft to rotate. The second flexible scraper extends along the radial direction of the third rotating shaft, and the angle between adjacent second flexible scrapers is non-zero.
[0021] In one embodiment, the controller is a PLC controller.
[0022] Implementing the lime dosing system of the present utility model, by setting a second vibrator on the conveying pipeline, the conveying pipeline can be automatically vibrated during the material transmission process to avoid the material from caking in the conveying pipeline; by setting a heater at the discharging pipeline and heating the inside of the discharging pipeline, the moisture in the material inside the discharging pipeline can be dried, avoiding the problem of blockage of the discharging pipeline caused by the material getting damp and caking, ensuring the normal transportation of the material, replacing the way of manually knocking the pipeline, reducing the maintenance cost of the pipeline; by flushing the pipeline to flush the dosing pipeline, the residual lime agent in the dosing pipeline can be avoided from hardening and caking, reducing the residue of the solution in the dosing pipeline, ensuring the smoothness of the dosing pipeline; by setting a first vibrator on the first bin and a third vibrator on the second bin, the powder in the first bin and the second bin becomes loose through strong vibration, enabling the materials in the second bin and the second bin to be continuously discharged, ensuring the effective addition of the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of the lime dosing system in an embodiment of the present utility model;
[0024] Figure 2 is a control schematic diagram of the first vibrator in an embodiment of the present utility model;
[0025] Figure 3 This is the control schematic diagram of the second vibrator in an embodiment of the present utility model;
[0026] Figure 4 This is the control schematic diagram of the third vibrator in an embodiment of the present utility model. Detailed implementation manners
[0027] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0028] Please refer to Figure 1 , the present utility model discloses a lime dosing system that can prevent pipeline blockage, reduce the residue of the solution in the dosing pipeline, and avoid the interruption of the material silo discharging. The lime dosing system includes a first silo 100, a conveying pipeline 200, a second silo 300, a discharging pipeline 400, a medicine pool 500, a dosing pipeline 600, a flushing pipeline 700, and a controller (not shown in the figure) for realizing the control of the entire lime dosing system, which are connected in sequence. In this embodiment, the structures of the first silo 100 and the second silo 300 are the same, and both include a cylindrical silo body and a conical discharging part fixed at the lower part of the silo body. Lime is stored in the first silo 100, and the lime can be added to the first silo 100 manually or automatically through a screw feeder. A conveying pump 110 is arranged at the discharging end of the first silo 100, and the conveying pump 110 is a screw conveyor 110 for feeding the lime powder in the first silo 100 into the conveying pipeline 200. A first vibrator 120 is fixed on the outer surface of the first silo 100, and the first vibrator 120 is used to drive the first silo 100 to vibrate as a whole during operation, so that the materials in the first silo 100 become loose, facilitating the materials in the first silo 100 to fall smoothly onto the conveying pump 110 and be transported through the conveying pump 110.
[0029] The input end of the conveying pipeline 200 is communicated with the output end of the conveying pump 110 and receives the material transmitted by the conveying pump 110. A second vibrator 210 for driving the conveying pipeline 200 to vibrate is fixed on the outer surface of the conveying pipeline 200. The second vibrator 210 is used to drive the conveying pipeline 200 to vibrate during operation. In this way, the lime powder fed into the conveying pipeline 200 by the conveying pump 110 will vibrate simultaneously with the conveying pipeline 200, making the lime powder loose to avoid caking of the lime powder and prevent the problem of difficult lime powder conveying caused by blockage of the conveying pipeline 200 by the lime powder. A first feeder 220 is provided at the output end of the conveying pipeline 200. The first feeder 220 is a screw feeder and is used to send the lime powder entering the conveying pipeline 200 to the second bin 300. In this embodiment, the conveying pipeline 200 is inclined, and the horizontal height of the first bin 100 is higher than the horizontal height of the second bin 300, or the conveying pipeline 200 is arranged vertically, so that the lime powder fed into the conveying pipeline 200 by the conveying pump 110 is transported along the conveying pipeline 200 under the action of its own gravity to the first feeder 220, which is convenient for the first feeder 220 to further transport the lime powder. The first feeder 220 includes a transmission pipe 221 located below the conveying pipeline 200, communicated with the conveying pipeline 200 and extending horizontally, a central shaft 222 inserted into the transmission pipe 221, a spiral transmission fin 223 fixed on the surface of the central shaft 222 and arranged along a spiral path on the surface of the central shaft 222, and a servo motor 224 drivingly connected to the central shaft 222. When the lime powder in the conveying pipeline 200 falls on the spiral transmission fin 223, the servo motor 224 drives the central shaft 222 to rotate, further driving the spiral transmission fin 223 to rotate, so as to transport the lime powder on the spiral transmission fin 223 to the second bin 300.
[0030] The second silo 300 is arranged at the output end of the first feeder 220 and receives the materials conveyed by the first feeder 220. A third vibrator 310 for driving the second silo 300 to vibrate is fixed on the outer surface of the second silo 300. When the third vibrator 310 works, it drives the second silo 300 to vibrate, so that the lime powder in the second silo 300 becomes loose, avoiding local compaction after the lime powder accumulates, and further preventing cavities from appearing on the wall of the second silo 300 during the feeding process, so as to ensure the normal feeding of the lime powder in the second silo 300. In this embodiment, the output end of the first feeder 220 is located above the barrel of the second silo 300, so as to feed materials into the second silo 300 from the upper part of the second silo 300. The feeding pipeline 400 is located below the second silo 300 and is used to receive the lime powder output from the lower feeding end of the second silo 300. In this embodiment, the input end of the feeding pipeline 400 is communicated with the feeding end of the second silo 300, the length direction of the feeding pipeline 400 is perpendicular to the height direction of the second silo 300, and a second feeder 410 and a heater 420 for heating the feeding pipeline 400 are arranged in the feeding pipeline 400. The second feeder 410 is a screw feeder, and the heater 420 is used to heat the lime powder entering the feeding pipeline 400 to remove the moisture in the lime powder, avoiding the accumulation of the lime powder in the feeding pipeline 400 due to moisture caking, and further preventing the problem of blockage of the feeding pipeline 400 and inability to normally feed materials into the medicine pool 500.
[0031] The medicine pool 500 is used to access clean water and receive the materials transported by the second feeder 410. A stirrer 510 for stirring the materials and clean water to form a medicine is provided in the medicine pool 500. That is to say, the lime powder discharged from the second bin 300 is put into the medicine pool 500 through the second feeder 410. At the same time, clean water is added to the medicine pool 500. The lime powder and clean water in the medicine pool 500 are stirred by the stirrer 510, so that the lime powder is fully mixed in the clean water, thereby forming a lime aqueous solution (i.e., the medicine). The input end of the dosing pipeline 600 is communicated with the output end of the medicine pool 500, and a lime dosing pump 610 for sending the medicine in the medicine pool 500 into the dosing pipeline 600 is provided at the input end of the dosing pipeline 600. The output end of the dosing pipeline 600 corresponds to the wastewater treatment container, and a flushing port communicated with the inner cavity of the dosing pipeline 600 is opened on the side wall of the dosing pipeline 600. The lime dosing pump 610 can be a water pump made of anti-corrosion material, so as to pump the medicine in the medicine pool 500 into the dosing pipeline 600, and then add it to the wastewater treatment container through the dosing pipeline 600. In this embodiment, the dosing pipeline 600 can be inclined, and the horizontal height of the input end of the dosing pipeline 600 is higher than the horizontal height of the output end of the dosing pipeline 600, so that the lime aqueous solution in the dosing pipeline 600 can flow into the wastewater treatment container by gravity. The flushing pipeline 700 is located beside the dosing pipeline 600. The input end of the flushing pipeline 700 is used to access flushing water, and the output end of the flushing pipeline 700 is fixed on the dosing pipeline 600 and communicated with the flushing port. In this way, by accessing external flushing water through the flushing pipeline 700, the residual lime aqueous solution in the dosing pipeline 600 can be flushed to avoid the problem that the residual lime aqueous solution hardens and caking in the dosing pipeline 600, thereby blocking the dosing pipeline 600. The controller is electrically connected to the delivery pump 110, the first vibrator 120, the second vibrator 210, the first feeder 220, the third vibrator 310, the second feeder 410, the heater 420, the stirrer 510 and the lime dosing pump 610 respectively. The controller is used to control the delivery pump 110, the first vibrator 120, the second vibrator 210, the first feeder 220, the third vibrator 310, the second feeder 410, the heater 420, the stirrer 510 and the lime dosing pump 610. Preferably, the controller of this embodiment is a PLC controller.
[0032] In one embodiment, the first vibrator 120, the second vibrator 210, and the third vibrator 310 are all three-phase vibration motors. Preferably, the first vibrator 120, the second vibrator 210, and the third vibrator 310 are all three-phase vibration motors of model MVE800 / 3 produced by Vibro S.p.A. To monitor the material levels in the first bin 100 and the second bin 300 and avoid material shortage in the lime dosing system, in this embodiment, level sensors are respectively provided at the discharging ends of the first bin 100 and the second bin 300. Preferably, at least two first level sensors 130 are provided at the discharging end of the first bin 100, and each first level sensor 130 is at the same horizontal height; at least two second level sensors 320 are provided at the discharging end of the second bin 300, and each second level sensor 320 is at the same horizontal height. That is to say, multiple first level sensors 130 are provided at the discharging end of the first bin 100. When one of the first level sensors 130 fails, the remaining first level sensors 130 can still continue to monitor the material level in the first bin 100, avoiding the situations of discharging overflow or inability to identify the material level in the bin caused by the inability to accurately identify the material level in the first bin 100, making the material level control of the first bin 100 more accurate and reliable. Similarly, by providing multiple second level sensors 320 at the discharging end of the second bin 300, when one of the second level sensors 320 fails, the remaining second level sensors 320 can still continue to monitor the material level in the second bin 300, avoiding the situations of discharging overflow or inability to identify the material level in the bin caused by the inability to accurately identify the material level in the second bin 300, making the material level control of the second bin 300 more accurate and reliable.
[0033] Please combine Figures 1-4 , Figure 2 In it, M10.1 is the first level sensor 130 of the first bin 100, M4.0 is the emergency stop switch, and M14.0 is the first vibrator 120; Figure 3 In it, M10.0 is the relay of the transfer pump 110, M4.0 is the emergency stop switch, and M13.0 is the second vibrator 210; Figure 4Among them, M10.2 is the second level sensor 320 of the second bin 300, M4.0 is the emergency stop switch, and M15.0 is the third vibrator 310. During the operation of the lime dosing system, when the first level sensor 130 at the discharging end of the first bin 100 detects that the material level in the first bin 100 is lower than its lowest level, the controller controls the external conveying equipment to automatically feed the first bin 100, or the controller controls the alarm equipment to give an alarm to prompt the staff to manually add lime powder into the first bin 100. After the material in the first bin 100 is added, the controller controls the conveying pump 110 to work, and the conveying pump 110 conveys the lime powder into the conveying pipeline 200. While the conveying pump 110 is running, the first vibrator 120 installed on the first bin 100 and the second vibrator 210 installed on the conveying pipeline 200 work synchronously, and respectively vibrate the first bin 100 and the conveying pipeline 200 to ensure the normal discharging of the first bin 100 and prevent the lime powder from caking in the conveying pipeline 200. When the lime powder enters the conveying pipeline 200, the first feeder 220 further conveys the lime powder to the second bin 300 to achieve the feeding of the second bin 300. At the same time, the second level sensor 320 on the second bin 300 monitors the material level in the second bin 300, and the third vibrator 310 vibrates the second bin 300 so that the lime powder entering the second bin 300 can smoothly enter the second feeder 410 and be further sent to the medicine tank 500 for stirring and dissolving through the second feeder 410.
[0034] The second feeder 410 includes a first rotating shaft 411 received in the feeding pipeline 400, a spiral blade 412 fixed on the first rotating shaft 411 and arranged along the axial direction of the first rotating shaft 411, and a first driving motor 413 located outside the feeding pipeline 400 and driving the first rotating shaft 411 to rotate. The outer surface of the first rotating shaft 411, the spiral blade 412 and the inner surface of the feeding pipeline 400 enclose a spiral feeding channel; the heater 420 is fixed in the feeding pipeline 400, or fixed on the first rotating shaft 411, or fixed on the spiral blade 412. In this way, the lime powder in the feeding pipeline 400 can be heated by directly heating the feeding pipeline 400, or by heating the first rotating shaft 411 or the spiral blade 412. Of course, the feeding pipeline 400, the first rotating shaft 411 and the spiral blade 412 can also be heated simultaneously to improve the drying efficiency of the lime powder. The heating sheets of the heater 420 are distributed on the inner surface of the feeding pipeline 400, or on the surfaces of the first rotating shaft 411 and the spiral blade 412.
[0035] In one embodiment, the lime dosing system further includes a water inlet pipe 900 that is connected to an external water storage device or a water supply system and is used to convey clean water to the chemical tank 500. A first solenoid valve 910 electrically connected to the controller is provided on the water inlet pipe 900, and a flow meter 920 electrically connected to the controller is provided at one end of the water inlet pipe 900 adjacent to the chemical tank 500. The first solenoid valve 910 is used to control the on / off of the water inlet pipe 900, and the flow meter 920 is used to control the amount of clean water added to the chemical tank 500, thereby quantitatively adjusting the concentration of the lime aqueous solution. A second solenoid valve 710 electrically connected to the controller is provided on the flushing pipe 700. The second solenoid valve 710 is used to control the on / off of the flushing pipe 700. In actual operation, the second solenoid valve 710 is opened when the lime dosing system is started or stopped, so as to introduce flushing water into the flushing pipe 700 and flush the dosing pipe 600. Preferably, the flushing port is opened on one side of the dosing pipe 600 adjacent to the input end of the dosing pipe 600 to extend the flow path of the flushing water in the dosing pipe 600 and minimize the residue of the lime aqueous solution in the dosing pipe 600.
[0036] A first arch-breaking feeder 140 is further provided in the first silo 100. The first arch-breaking feeder 140 includes a second rotating shaft 141 inserted into the first silo 100 and extending along the height direction of the first silo 100, a plurality of first flexible scrapers 142 arranged at intervals along the axial direction of the second rotating shaft 141 and fixedly connected to the second rotating shaft 141 respectively, and a second driving motor 143 for driving the second rotating shaft 141 to rotate. The first flexible scraper 142 extends along the radial direction of the second rotating shaft 141, and the included angle between adjacent first flexible scrapers 142 is non-zero. In this embodiment, the first flexible scraper 142 has a rectangular strip structure. Preferably, the first flexible scraper 142 extends from the center of the second rotating shaft 141 to one side edge thereof, and the length of the first flexible scraper 142 is less than the radius of the first silo 100 at its corresponding height; or the first flexible scraper 142 extends from the center of the second rotating shaft 141 to both side edges thereof, and the length of the first flexible scraper 142 is less than the diameter of the first silo 100 at its corresponding height. By providing the first arch-breaking feeder 140 in the first silo 100, when the second driving motor 143 drives the second rotating shaft 141 to rotate, each first flexible scraper 142 rotates and strikes the cavities or arches formed by the accumulation and subsequent feeding of lime powder in the first silo 100, so that the lime powder is in a loose state, facilitating the smooth feeding of the lime powder, thereby further improving the smoothness of the feeding of the first silo 100. A second arch-breaking feeder 330 is further provided in the second silo 300. The second arch-breaking feeder 330 includes a third rotating shaft 331 inserted into the second silo 300 and extending along the height direction of the second silo 300, a plurality of second flexible scrapers 332 arranged at intervals along the axial direction of the third rotating shaft 331 and fixedly connected to the third rotating shaft 331 respectively, and a third driving motor 333 for driving the third rotating shaft 331 to rotate. The second flexible scraper 332 extends along the radial direction of the third rotating shaft 331, and the included angle between adjacent second flexible scrapers 332 is non-zero. The structure and working principle of the second arch-breaking feeder 330 are the same as those of the first arch-breaking feeder 140, and will not be elaborated herein.
[0037] In the above lime dosing system, by setting a second vibrator 210 on the conveying pipeline 200, the conveying pipeline 200 can be automatically vibrated during the material transmission process to prevent the material from caking in the conveying pipeline 200. A heater 420 is set at the feeding pipeline 400 and the inside of the feeding pipeline 400 is heated to dry the moisture in the material in the feeding pipeline 400, avoiding the blockage problem of the feeding pipeline 400 caused by the caking of the damp material, ensuring the normal transportation of the material. It replaces the way of manually knocking on the pipeline, reducing the maintenance cost of the pipeline. By flushing the dosing pipeline 600 with the flushing pipeline 700, the residual lime agent in the dosing pipeline 600 can be prevented from hardening and caking, reducing the residue of the solution in the dosing pipeline 600 and ensuring the smoothness of the dosing pipeline 600. A first vibrator 120 is set on the first bin 100, and a third vibrator 310 is set on the second bin 300. By strong vibration, the powder in the first bin 100 and the second bin 300 becomes loose, enabling the continuous feeding of the material in the second bin 300 and the second bin 300, ensuring the effective addition of the material.
[0038] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0039] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A lime dosing system, characterized in that: include: A first silo, wherein lime is stored in the first silo, a delivery pump is provided at a discharge end of the first silo, and a first rapper is fixed on an outer surface of the first silo; A conveying pipeline, wherein the input end of the conveying pipeline is connected to the output end of the conveying pump and receives the material transmitted by the conveying pump, a second rapper for driving the conveying pipeline to vibrate is fixed on the outer surface of the conveying pipeline, and a first feeder is provided at the output end of the conveying pipeline; a second silo, the second silo being arranged at the output end of the first feeder and receiving the material transmitted by the first feeder, a third rapper for driving the second silo to vibrate being fixed on an outer surface of the second silo; A material discharge pipe, wherein the input end of the material discharge pipe is connected to the material discharge end of the second silo, the length direction of the material discharge pipe is perpendicular to the height direction of the second silo, and a second feeder and a heater for heating the material discharge pipe are arranged in the material discharge pipe; A medicine tank, the medicine tank is used to receive clean water and receive materials transmitted by the second feeder, and a mixer is provided in the medicine tank for mixing materials and clean water to form medicine; A dosing pipe, wherein the input end of the dosing pipe is connected to the output end of the medicine pool, and the input end of the dosing pipe is provided with a lime dosing pump for delivering the medicine in the medicine pool into the dosing pipe, the output end of the dosing pipe corresponds to the wastewater treatment container, and the side wall of the dosing pipe is provided with a flushing port connected to the inner cavity of the dosing pipe; A flushing pipe, the flushing pipe is located beside the dosing pipe, the input end of the flushing pipe is used to receive flushing water, and the output end of the flushing pipe is fixed on the dosing pipe and connected to the flushing port; A controller is electrically connected to the delivery pump, the first rapper, the second rapper, the first feeder, the third rapper, the second feeder, the heater, the mixer and the lime dosing pump.
2. The lime dosing system according to claim 1, characterized in that: The first rapper, the second rapper and the third rapper are all three-phase vibration motors.
3. The lime dosing system according to claim 1, characterized in that: The delivery pump is a screw delivery pump, and the first feeder and the second feeder are both screw feeders.
4. The lime dosing system according to claim 3, characterized in that: The second feeder includes a first rotating shaft accommodated in a discharge pipe, a spiral blade fixed on the first rotating shaft and arranged axially along the first rotating shaft, and a first driving motor located outside the discharge pipe and driving the first rotating shaft to rotate. The outer surface of the first rotating shaft, the spiral blade and the inner surface of the discharge pipe form a spiral feeding channel; the heater is fixed in the discharge pipe, or fixed on the first rotating shaft, or fixed on the spiral blade.
5. The lime dosing system according to claim 1, characterized in that: The lime dosing system also includes a water inlet pipe connected to an external water storage device or a water supply system and used to transport clean water to the medicine pool. The water inlet pipe is provided with a first solenoid valve electrically connected to the controller, and one end of the water inlet pipe adjacent to the medicine pool is provided with a flow meter electrically connected to the controller.
6. The lime dosing system according to claim 1, characterized in that: The flushing pipeline is provided with a second solenoid valve electrically connected to the controller.
7. The lime dosing system according to claim 1, characterized in that: The unloading end of the first silo is provided with at least two first material level sensors, and each first material level sensor is located at the same horizontal height; the unloading end of the second silo is provided with at least two second material level sensors, and each second material level sensor is located at the same horizontal height.
8. The lime dosing system according to claim 1, characterized in that: A first arch-breaking feeder is also provided in the first silo, and the first arch-breaking feeder includes a second rotating shaft inserted into the first silo and extending along the height direction of the first silo, a plurality of first flexible scrapers arranged at intervals along the axial direction of the second rotating shaft and respectively fixedly connected to the second rotating shaft, and a second driving motor driving the second rotating shaft to rotate, the first flexible scrapers extend radially along the second rotating shaft, and the angle between adjacent first flexible scrapers is non-zero.
9. The lime dosing system according to claim 1, characterized in that: A second arch-breaking feeder is also provided in the second silo, and the second arch-breaking feeder includes a third rotating shaft inserted into the second silo and extending along the height direction of the second silo, a plurality of second flexible scrapers arranged at intervals along the axial direction of the third rotating shaft and respectively fixedly connected to the third rotating shaft, and a third driving motor driving the third rotating shaft to rotate, the second flexible scrapers extend radially along the third rotating shaft, and the angle between adjacent second flexible scrapers is non-zero.
10. The lime dosing system according to claim 1, characterized in that: The controller is a PLC controller.