Automatic dosing system

Abstract

The utility model provides an automatic dosing system, and relates to the technical field of automatic dosing, the automatic dosing system comprises a medicine storage box, a dosing pipe, a dosing pump, a turbidity sensor, a suspended solid sensor and a controller, the medicine storage box is used for temporarily storing a mixed liquid medicine formed by a flocculating agent and a coagulant, one end of the dosing pipe is connected with a medicine outlet of the medicine storage box, and the other end of the dosing pipe is connected with a water outlet of the medicine storage box; one end of the chemical feeding pipe is connected with the chemical storage tank, the other end of the chemical feeding pipe is connected with the treatment tank, the chemical feeding pump is arranged on the chemical feeding pipe and used for controlling mixed chemical liquid in the chemical storage tank to flow towards the treatment tank, and the turbidity sensor is arranged on the treatment tank. The controller controls the dosing pump to operate according to signals of the turbidity sensor and the suspended solid sensor, the defect of blind dosing of traditional dosing equipment is avoided, a flocculating agent and a flocculating agent are used for replacing diesel oil, alcohol collecting agents and foaming agents in the prior art, volatilization is not prone to occurring, and the health of post personnel is guaranteed.

Description

Technical Field

[0001] This application relates to the field of automatic dosing technology, and more specifically, to an automatic dosing system. Background Technology

[0002] Coal slurry water thickening, as a pre-filtration process, is a key step in achieving closed-loop recycling of washing water in coal preparation plants. The flotation system plays an important role in the coal slurry water thickening process. It can improve the thickening effect of coal slurry water, recover clean coal resources, optimize the coal slurry water thickening process, and work synergistically with the thickening system to achieve efficient treatment and recycling of coal slurry water.

[0003] In existing technologies, the reagent dosing equipment in flotation systems can only achieve continuous quantitative dosing, and often cannot adjust the reagents in a timely manner according to the condition of the flotation slurry. This easily leads to reagent waste and loss of flotation concentrate, directly affecting the quality of the produced products, and the indicators of flotation concentrate are also difficult to guarantee. The collectors and frothers used in flotation are diesel oil and alcohol, which are chemical reagents with a certain degree of volatility. During long-term production operations, these volatile reagents can harm the health of the workers on the job. Summary of the Invention

[0004] The purpose of this application is to provide an automatic dosing system that can solve the technical problems of existing flotation system dosing devices that can only continuously and quantitatively administer reagents without adjusting the reagents according to the condition of the flotation slurry, which easily leads to reagent waste and clean coal loss, affecting product quality and clean coal indicators; and the use of diesel, alcohol collectors and frothers that are volatile, which will endanger the health of personnel in long-term operation.

[0005] This application provides an automatic dosing system, including:

[0006] A drug storage tank, which is used to temporarily store a mixed drug solution formed by flocculant and coagulant;

[0007] A dosing pipe, one end of which is connected to the outlet of the storage tank, and the other end of which is connected to the treatment pool;

[0008] A dosing pump, which is installed on the dosing pipe, is used to control the flow of the mixed medicine solution in the storage tank to the treatment pool;

[0009] A turbidity sensor, which is installed on the treatment tank, is used to measure the concentration of coal slurry water in the treatment tank;

[0010] A solid suspended matter sensor is installed on the treatment tank and is used to measure the concentration of solid suspended matter in the treatment tank;

[0011] The controller is used to receive signals from the turbidity sensor and the solid suspended matter sensor, and to control the operation of the dosing pump based on the signals from the turbidity sensor and the solid suspended matter sensor.

[0012] Furthermore, the inlet of the drug storage tank is connected to a stirring device through a first pipe. The stirring device is used to stir the flocculant and coagulant. The flocculant and coagulant, after being stirred evenly, are then mixed with water to form a mixed drug solution. The inlet of the drug storage tank is equipped with a drug inlet valve.

[0013] Furthermore, the medicine storage tank is equipped with an upper limit liquid level sensor, an intermediate liquid level sensor, and a lower limit liquid level sensor in sequence from top to bottom. The upper limit liquid level sensor, the intermediate liquid level sensor, and the lower limit liquid level sensor are electrically connected to the controller. The controller controls the opening and closing of the medicine inlet valve based on the signals from the upper limit liquid level sensor and the intermediate liquid level sensor, and controls the start and stop of the medicine dosing pump based on the signal from the lower limit liquid level sensor.

[0014] Furthermore, it also includes a feeding hopper and a ring vacuum pump. The feeding port of the feeding hopper is connected to the ring vacuum pump through a second pipe, and the ring vacuum pump is connected to the feeding port of the stirring device through a third pipe.

[0015] Furthermore, it also includes a first solid feeder and a second solid feeder, through which flocculant and coagulant are added to the hopper respectively.

[0016] Furthermore, both the first solid feeder and the second solid feeder are screw conveyors.

[0017] Furthermore, a discharge valve is provided at the discharge port of the hopper.

[0018] The beneficial effects of this utility model are:

[0019] This invention enables real-time and accurate monitoring of key parameters of coal slurry water in the treatment tank using turbidity and suspended solids sensors. The controller controls the operation of the dosing pump based on the signals from the turbidity and suspended solids sensors, avoiding the drawbacks of blind dosing in traditional dosing equipment. By accurately measuring the concentration of coal slurry water and suspended solids, the mixed solution of flocculant and coagulant can be precisely added according to the actual situation, ensuring that the appropriate dosage can be applied under different water quality conditions. This improves the accuracy of dosing and reduces the problems of poor treatment effect due to insufficient dosing or waste of reagents due to excessive dosing. By replacing diesel fuel, alcohol collectors, and foaming agents in the existing technology with flocculants and coagulants, the flocculants are less volatile and protect the health of personnel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a system flowchart of some embodiments of this application;

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Drug storage tank; 2. Dosing pipe; 3. Treatment tank; 4. Dosing pump; 5. Turbidity sensor; 6. Solid suspended matter sensor; 7. First pipeline; 8. Stirring device; 9. Inlet valve; 10. Upper limit liquid level sensor; 11. Intermediate liquid level sensor; 12. Lower limit liquid level sensor; 13. Feed hopper; 14. Air ring vacuum pump; 15. Second pipeline; 16. Third pipeline; 17. First solid feeder; 18. Second solid feeder; 19. Feed valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0031] like Figure 1As shown, this application provides an automatic dosing system, including a storage tank 1, a dosing pipe 2, a dosing pump 4, a turbidity sensor 5, a suspended solids sensor 6, and a controller. The storage tank 1 temporarily stores a mixed solution of flocculant and coagulant. One end of the dosing pipe 2 is connected to the outlet of the storage tank 1, and the other end is connected to a treatment tank 3. The dosing pump 4 is mounted on the dosing pipe 2 and controls the flow of the mixed solution from the storage tank 1 to the treatment tank 3. The turbidity sensor 5 is mounted on the treatment tank 3 and measures the concentration of coal slurry water in the treatment tank 3. The suspended solids sensor 6 is mounted on the treatment tank 3 and measures the concentration of suspended solids in the treatment tank 3. The controller receives signals from the turbidity sensor 5 and the suspended solids sensor 6 and controls the operation of the dosing pump 4 based on these signals. Specifically, turbidity sensor 5 and suspended solids sensor 6 are electrically connected to the controller, which in turn is electrically connected to the dosing pump 4. The turbidity sensor 5 and suspended solids sensor 6 enable real-time and accurate monitoring of key parameters of the coal slurry water in treatment tank 3. The controller controls the operation of the dosing pump 4 based on the signals from these sensors, avoiding the drawbacks of blind dosing in traditional dosing equipment. By accurately measuring the concentration of coal slurry water and suspended solids, the controller can precisely add a mixture of flocculants and coagulants according to the actual situation, ensuring appropriate dosage under different water quality conditions. This improves the accuracy of dosing and reduces the problems of poor treatment effect due to insufficient dosing or waste of chemicals due to excessive dosing. The use of flocculants and coagulants instead of diesel fuel, alcohol collectors, and foaming agents in existing technologies is less volatile, protecting the health of personnel.

[0032] like Figure 1As shown, the inlet of the storage tank 1 is connected to a stirring device 8 via a first pipe 7. The stirring device 8 is used to stir the flocculant and coagulant. After uniform stirring, the flocculant and coagulant are then mixed with water to form a mixed solution. The inlet of the storage tank 1 is equipped with an inlet valve 9. In this embodiment, the stirring device 8 is existing technology, and the user can select a suitable stirring device 8 according to the actual situation. The stirring device 8 is equipped with a water inlet pipe. After the flocculant and coagulant are uniformly stirred in the stirring device 8, water is injected into the stirring device 8 through the water inlet pipe to mix the flocculant and coagulant with the water and continue to mix. Continue stirring to form a mixed solution. The setting of the inlet valve 9 can precisely control the flow rate and timing of the agent entering the storage tank 1 from the stirring device 8. After the stirring device 8 completes the uniform stirring of a batch of agents, the inlet valve 9 can be opened and closed in a timely manner according to the liquid level in the storage tank 1 and the production needs. When the storage tank 1 needs to be replenished with agents, the inlet valve 9 is opened and closed in time after the agent is added to prevent too much or too little agent from entering the storage tank 1. This helps to maintain a reasonable liquid level and concentration of the agent in the storage tank 1 and ensures that the dosing equipment can continuously and stably provide the treatment tank 3 with a suitable mixed solution.

[0033] like Figure 1 As shown, the medicine storage tank 1 is equipped with an upper limit liquid level sensor 10, an intermediate liquid level sensor 11, and a lower limit liquid level sensor 12, arranged sequentially from top to bottom. These sensors are electrically connected to a controller. The controller controls the opening and closing of the inlet valve 9 based on signals from the upper limit and intermediate liquid level sensors 10 and 11, and controls the start and stop of the dosing pump 4 based on signals from the lower limit sensor 12. The upper limit and intermediate liquid level sensors 10 and 11 work together to accurately monitor changes in the liquid level within the medicine storage tank 1 and control the inlet valve 9. When the liquid level reaches the position indicated by the upper limit sensor 10, it signifies that the medicine storage tank 1 is about to be full, and the controller receives the signal. After the signal is received, the inlet valve 9 is closed to prevent further drug feeding, effectively avoiding waste and environmental pollution caused by drug overflow. The intermediate liquid level sensor 11 can be used as a supplementary reference point. If the flow rate of coal slurry water is large and the drug is consumed quickly during production, the drug can continue to be fed for a period of time after the liquid level reaches the intermediate level to ensure sufficient reserves to maintain production continuity. When the liquid level drops to the position of the lower limit liquid level sensor 12, it indicates that the drug storage tank 1 is insufficient. The controller immediately controls the dosing pump 4 to stop working to prevent the dosing pump 4 from running dry and being damaged, and to prevent the treatment effect from being affected by the lack of drug to be added. For example, in the process of treating coal slurry water, if the drug storage tank 1 is empty and the dosing pump 4 continues to run, not only will it be unable to add drugs normally, but it may also cause mechanical failure due to running dry.

[0034] like Figure 1As shown, the automatic dosing equipment of this application also includes a feeding hopper 13 and a ring vacuum pump 14. The feeding port of the feeding hopper 13 is connected to the ring vacuum pump 14 through a second pipe 15. The ring vacuum pump 14 is connected to the feeding port of the stirring device 8 through a third pipe 16. The ring vacuum pump 14 can generate strong suction, and quickly draws the flocculant and coagulant in the feeding hopper 13 into the stirring device 8 through the second pipe 15 and the third pipe 16. The vacuum suction method improves the material conveying speed, shortens the feeding time interval, and improves the efficiency of the entire production process.

[0035] like Figure 1 As shown, the automatic dosing equipment of this application also includes a first solid feeder 17 and a second solid feeder 18. The flocculant and coagulant are added to the hopper 13 through the first solid feeder 17 and the second solid feeder 18, respectively. The first solid feeder 17 and the second solid feeder 18 can accurately control the amount of flocculant and coagulant added. The flocculant and coagulant are quantitatively added to the hopper 13 and can be initially mixed in the hopper 13. They are then mixed again under the suction of the air ring vacuum pump 14 and finally mixed evenly in the stirring device 8.

[0036] like Figure 1 As shown, both the first solid feeder 17 and the second solid feeder 18 are screw conveyors. Screw conveyors can achieve relatively precise control of material conveying volume. The screw conveyor propels the material forward by rotating the screw blades. By adjusting the speed of the screw, the conveying speed and flow rate of the material can be accurately controlled. During the addition of flocculants and coagulants, the amount of reagents added can be ensured to be accurate, avoiding the impact on the treatment effect of coal slurry water due to excessive or insufficient reagent addition.

[0037] like Figure 1 As shown, a discharge valve 19 is provided at the discharge port of the discharge hopper 13. The discharge valve 19 can accurately control the material flow rate from the discharge hopper 13 into subsequent equipment (such as the air ring vacuum pump 14, the stirring device 8, etc.). By adjusting the opening of the discharge valve 19, the discharge speed of flocculant and coagulant can be flexibly adjusted according to production needs and actual conditions.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic dosing system, characterized in that, The application relates to a coal slurry treatment device. The device comprises a storage tank for temporarily storing mixed liquid formed by flocculants and coagulants; a dosing pipe, one end of which is connected with a dosing opening of the storage tank, and the other end of which is connected with a treatment tank; a dosing pump arranged on the dosing pipe and used for controlling the flow of the mixed liquid in the storage tank to the treatment tank; a turbidity sensor arranged on the treatment tank and used for measuring the concentration of coal slurry in the treatment tank; a solid suspension sensor arranged on the treatment tank and used for measuring the concentration of solid suspension in the treatment tank; and a controller used for receiving signals of the turbidity sensor and the solid suspension sensor and controlling the operation of the dosing pump according to the signals of the turbidity sensor and the solid suspension sensor. The dosing opening of the storage tank is connected with a stirring device through a first pipeline, the stirring device is used for stirring the flocculants and the coagulants, the flocculants and the coagulants after uniform stirring are mixed with water to form the mixed liquid, and a dosing valve is arranged at the dosing opening of the storage tank. The storage tank is sequentially provided with an upper limit liquid level sensor, an intermediate liquid level sensor and a lower limit liquid level sensor from top to bottom, the upper limit liquid level sensor, the intermediate liquid level sensor and the lower limit liquid level sensor are electrically connected with the controller, the controller controls the opening and closing of the dosing valve according to signals of the upper limit liquid level sensor and the intermediate liquid level sensor, and the controller controls the start and stop of the dosing pump according to a signal of the lower limit liquid level sensor. The device further comprises a lower hopper and a gas ring vacuum pump, a lower dosing opening of the lower hopper is connected with the gas ring vacuum pump through a second pipeline, and the gas ring vacuum pump is connected with a feeding opening of the stirring device through a third pipeline. The device further comprises a first solid feeder and a second solid feeder, the flocculants and the coagulants are respectively added into the lower hopper through the first solid feeder and the second solid feeder. The first solid feeder and the second solid feeder are both screw conveying augers.

2. An automatic dosing system according to claim 1, characterized in that: A dosing valve is arranged at the lower dosing opening of the lower hopper.

3. An automatic dosing system according to claim 2, characterized in that: ​ 4. An automatic dosing system according to claim 3, characterized in that: ​ 5. An automatic dosing system according to claim 4, characterized in that: ​ 6. An automatic dosing system according to claim 5, characterized in that: ​ 7. An automatic dosing system according to claim 4, characterized in that: ​

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