Powdery medicine collaborative adding device for water treatment system

Abstract

The invention relates to the technical field of water treatment, in particular to a powder medicine collaborative adding device for a water treatment system, which comprises a liquid medicine adding unit, a powder medicine adding unit and a collaborative control module, and the collaborative control module is respectively connected with the liquid medicine adding unit and the powder medicine adding unit. The cooperative control module controls opening and closing of electric valve inserting plates at corresponding positions and starting and stopping of a recycling mechanism, independent operation, mutual standby and cooperative chemical feeding of the liquid chemical feeding unit and the powdery chemical feeding unit are achieved, three chemical feeding modes are achieved, and the chemical feeding efficiency is improved. The liquid dosing unit can be started in time to perform corresponding dosing on the wastewater treatment tank when the liquid dosing unit breaks down, so that the problem that the treatment process of the water treatment system is out of control due to dosing interruption easily caused by difficulty in supplementing subsequent chemicals or chemicals in time when a certain unit breaks down is avoided.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to a device for co-doping powdered chemicals in water treatment systems. Background Technology

[0002] In water treatment processes in fields such as chemical engineering and environmental protection, various chemicals such as coagulants, flocculants, sodium hypochlorite, and calcium hydroxide need to be added. These chemicals can be stirred and dissolved, and then the solution can be added to each dosing point through a variable frequency metering pump or water jet. Alternatively, powdered chemicals can be added directly by setting up a device.

[0003] Existing dosing devices often focus on only one dosing mode, which is to add powdered chemicals to a dissolving device for dissolution and then add the dissolved chemicals to the wastewater for treatment. When a unit fails, such as when the dissolving system is blocked or the powder delivery is interrupted, it is difficult to replenish the subsequent chemicals in time, which can easily lead to the water treatment system losing control of its treatment process due to the interruption of dosing. Summary of the Invention

[0004] This application provides a device for co-doping powdered chemicals in a water treatment system, which solves the problem that using only one dosing method in the prior art can easily lead to the loss of control of the water treatment process due to the interruption of dosing.

[0005] This application provides a device for co-doping powdered chemicals in a water treatment system, comprising: The liquid dosing unit consists of a dissolving tank, a stirrer, a densitometer, a level gauge, a variable frequency metering pump, and a recirculation mechanism, and is used to add and transport the dissolved drug solution. The powder dosing unit consists of a storage tank, a stirring device, a vibrating device, a screw feeder, and a weighing device, for adding and conveying undissolved powdered medicines; The collaborative control module is connected to the liquid dosing unit and the powder dosing unit respectively, and is used to control the start and stop status of the liquid dosing unit and the powder dosing unit to change the dosing mode of the device.

[0006] Preferably, the medicine storage tank and the dissolving tank are connected by a powder conveying pipe, and a first electric valve gate is provided at the connection between the powder conveying pipe and the medicine storage tank. The first electric valve gate is connected to the collaborative control module.

[0007] Preferably, the input end of the screw feeder is connected to the output end of the medicine storage tank, and a second electric valve gate is also provided at the connection between the screw feeder and the medicine storage tank. The second electric valve gate is connected to the collaborative control module. The weighing device is located at the input or output end of the screw feeder.

[0008] Preferably, the stirring device is located inside the medicine storage tank, and the vibrating device is integrated into the outer periphery of the medicine storage tank.

[0009] Preferably, the top of the medicine storage tank is movably provided with a sealing cover, the side wall of the medicine storage tank is provided with an inspection hole, and the top of the medicine storage tank is also provided with a safety valve and a dust collection device.

[0010] Preferably, the stirrer is located inside the dissolving tank, the densitometer and the level gauge are both located on the outer periphery of the dissolving tank, and a stirrer drive motor for driving the stirrer is provided at the top of the dissolving tank.

[0011] Preferably, the device further includes a wastewater treatment tank, which has a first dosing point and a second dosing point for connecting to the liquid dosing unit and the powder dosing unit, respectively.

[0012] Preferably, the output end of the screw feeder is connected to the second drug delivery point through a screw feeder conveying pipe; The wastewater treatment tank is also equipped with a wastewater agitator.

[0013] Preferably, the input end of the variable frequency metering pump is connected to the output end of the dissolving tank, the output end of the variable frequency metering pump is connected to the second drug delivery point through a drug delivery pipe, the input end of the recirculation mechanism is connected to the drug delivery pipe, and the other end is connected to the dissolving tank.

[0014] Preferably, a third electric valve gate is further provided between the variable frequency metering pump and the second drug delivery point, and the input end of the recirculation mechanism is located between the third electric valve gate and the variable frequency metering pump; The third electric valve gate is connected to the collaborative control module, which can control the opening and closing of the recirculation mechanism and the third electric valve gate through the density meter and the level meter.

[0015] The beneficial effects of this application are as follows: The powdered chemical co-doping device for water treatment systems disclosed in this application controls the opening and closing of electric valve slides and the start and stop of the recirculation mechanism at corresponding locations through a co-control module. This enables the independent operation, mutual backup, and co-doping of the liquid dosing unit and the powdered dosing unit, providing three dosing modes. This allows the powdered dosing unit to be activated promptly to do the corresponding chemicals in the wastewater treatment tank when the liquid dosing unit fails. This avoids the problem of the water treatment system losing control due to the interruption of dosing when one unit fails, making it difficult to replenish the subsequent agents or chemicals in time. Furthermore, the actual concentration of the reagent solution stored in the dissolving tank is detected and characterized by a level gauge and a density gauge, thereby monitoring whether the liquid dosing unit is operating normally. This allows for timely detection of any issues with the actual concentration of the reagent solution, and the timely activation of the powder dosing unit to replenish the reagents when problems occur via a collaborative control module. In the event of a malfunction in the liquid dosing unit, the powder dosing unit can be activated promptly to add the appropriate reagents to the wastewater treatment tank, preventing imbalances in the treatment process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a powdered chemical co-doping device for a water treatment system provided in an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the liquid dosing unit in the embodiments of this application; Figure 3 This is a schematic diagram of the overall structure of the powder dosing unit in the embodiments of this application.

[0018] Figure label: 1. Agitator; 2. Agitator drive motor; 3. Densitometer; 4. Level gauge; 5. Variable frequency metering pump; 6. Recirculation mechanism; 7. First electric valve gate; 8. Storage tank; 9. Agitator; 10. Second electric valve gate; 11. Vibrating device; 12. Weighing device; 13. Screw feeder; 14. Screw feeder conveying pipe; 15. Powder conveying pipe; 16. Powder silo inlet; 17. Dissolving tank; 18. Wastewater treatment tank; 19. Wastewater agitator; 20. Safety valve; 21. Dust collection device; 22. Third electric valve gate. Detailed Implementation

[0019] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The following is combined Figures 1-3 This application describes a device for co-doping powdered chemicals in a water treatment system, as provided in the embodiments of this application.

[0021] Reference Figure 1 As shown in the embodiment of this application, the powdered chemical co-doping device for a water treatment system includes a liquid dosing unit, a powdered dosing unit, and a co-control module. The liquid dosing unit consists of a dissolving tank 17, a stirrer 1, a densitometer 3, a level gauge 4, a variable frequency metering pump 5, and a recirculation mechanism 6, used to add and transport the dissolved chemical solution. The powdered dosing unit consists of a storage tank 8, a stirring device 9, a vibrating device 11, a screw feeder 13, and a weighing device 12, used to add and transport undissolved powdered chemicals. The co-control module is connected to both the liquid dosing unit and the powdered dosing unit, used to control the start and stop states of the liquid dosing unit and the powdered dosing unit, thereby changing the dosing method of the device.

[0022] The collaborative control module controls the opening and closing of the electric valve slide gates at the corresponding locations and the start and stop of the recirculation mechanism 6, enabling the independent operation, mutual backup, and collaborative dosing of the liquid dosing unit and the powder dosing unit. This provides three dosing modes, allowing the powder dosing unit to be activated promptly to dosing the wastewater treatment tank when the liquid dosing unit malfunctions. This avoids the problem of difficulty in replenishing subsequent agents or chemicals when one unit fails, which could easily lead to the water treatment system losing control due to dosing interruption.

[0023] In some specific embodiments, the medicine storage tank 8 and the dissolving tank 17 are connected by a powder conveying pipe 15. A first electric valve gate 7 is also provided at the connection between the powder conveying pipe 15 and the medicine storage tank 8. The first electric valve gate 7 is connected to the collaborative control module.

[0024] The storage tank 8 has a cylindrical upper part and a conical lower part. The conical end of the storage tank 8 is its output end. The powder conveying pipe 15 is located on the side of the storage pipe 8 near the dissolving tank 17. The powder conveying pipe 15 is a retractable flexible connection structure pipe to adapt to dissolving tanks 17 of different heights. The collaborative control module can control the powdered drug delivery between the powder dosing unit and the liquid dosing unit by controlling the opening and closing of the first electric valve slide plate 7.

[0025] In some specific embodiments, the input end of the screw feeder 13 is connected to the output end of the medicine storage tank 8, and a second electric valve gate 10 is also provided at the connection between the screw feeder 13 and the medicine storage tank 8. The second electric valve gate 10 is connected to the collaborative control module. Weighing device 12 is installed at the input or output end of screw feeder 13 to accurately measure the medicines conveyed to wastewater treatment tank 18.

[0026] Furthermore, the screw feeder 13 is a variable frequency screw feeder. By setting the screw feeder 13 as a variable frequency screw feeder and equipping it with a weighing device 12, the dosage of the chemical can be precisely adjusted.

[0027] In some specific embodiments, the stirring device 9 is disposed inside the medicine storage tank 8, and the rapping device 11 is integrated on the outer periphery of the medicine storage tank 8.

[0028] The powdered medicine stored inside the medicine storage tank 8 is stirred by the medicine stirring device 9 installed inside the medicine storage tank 8 to assist the flow of the powder. The outer wall of the medicine storage tube 8 is tapped and vibrated by the rapping device installed on the outer four walls of the medicine storage tank 8 to prevent the powdered medicine from caking on its inner wall, thus solving the problems of powdered medicine caking or poor material feeding.

[0029] In some specific embodiments, the top of the medicine storage tank 8 is movably provided with a sealing cover, an inspection hole is provided on the side wall of the medicine storage tank 8, and a safety valve 20 and a dust collection device 21 are also provided on the top of the medicine storage tank 8.

[0030] By configuring a movable sealing cover on the top of the medicine storage tank 8 and opening an inspection hole on the side wall, the stored medicines are protected from moisture, which facilitates later maintenance and timely handling of powder discharge problems. At the same time, the safety valve 20 and dust collection device 21 set at the top of the tank monitor and collect any loose medicines that may be present at the top, so as to avoid pollution to the surrounding environment or injury to the operators.

[0031] The storage tank 8 is also equipped with a powder hopper inlet 16 for adding powdered medicines on one side. The powder hopper inlet 16 is also equipped with a vertical conveying device such as a conveyor belt, bucket elevator, or screw elevator for transporting large quantities of powdered medicines, so as to reduce the workload of operators and make it suitable for processing systems that require long-term dosing.

[0032] In some specific embodiments, the stirrer 1 is located inside the dissolving tank 17, and the densitometer 3 and the level gauge 4 are both located on the outer periphery of the dissolving tank 17 to measure and display the real-time storage and actual concentration of the drug solution inside. A stirrer drive motor 2 for driving the stirrer 1 to operate is provided at the top of the dissolving tank 17.

[0033] A speed reducer is provided between the stirrer drive motor 2 and the stirrer 1 to facilitate the adjustment of its stirring speed.

[0034] In some specific embodiments, the device further includes a wastewater treatment tank 18, which has a first dosing point and a second dosing point for connection to the liquid dosing unit and the powder dosing unit, respectively.

[0035] In some specific embodiments, the output end of the screw feeder 13 is connected to the second drug delivery point through the screw feeder conveying pipe 14; The wastewater treatment tank 18 is also equipped with a wastewater agitator 19.

[0036] Sealed observation holes are provided between the screw feeder 13 and the screw feeder conveying pipe 14, and between the medicine storage tank 8 and the powder conveying pipe 15, so as to facilitate the observation of the dosing process.

[0037] In some specific embodiments, the input end of the variable frequency metering pump 5 is connected to the output end of the dissolving tank 17, the output end of the variable frequency metering pump 5 is connected to the second drug delivery point through the drug delivery pipe, the input end of the recirculation mechanism 6 is connected to the drug delivery pipe, and the other end is connected to the dissolving tank 17.

[0038] The dissolving tank 17 is a cylindrical container with its top as the input end and its bottom as the output end. The top and bottom are respectively provided with input holes and output holes for connecting to the powder conveying pipe 15 and the variable frequency metering pump 5. The output end of the stirrer drive motor 2 extends into the interior of the dissolving tank 17 and is connected to the stirrer 1.

[0039] The inner wall of the dissolving tank 17, which is in contact with the liquid, is treated with anti-corrosion measures or made of corrosion-resistant materials such as stainless steel. Similarly, the parts of the medicine storage tank 8 and the screw feeder 13 that are in contact with the material are treated in the same way to reduce the rate of corrosion of the device by the medicine and extend its service life.

[0040] In some specific embodiments, a third electric valve slide plate 22 is also provided between the variable frequency metering pump 5 and the second drug delivery point, and the input end of the recirculation mechanism 6 is located between the third electric valve slide plate 22 and the variable frequency metering pump 5. The third electric valve gate 22 is connected to the collaborative control module. The collaborative control module can control the opening and closing of the recirculation mechanism 6 and the third electric valve gate 22 through the densitometer 3 and the level gauge 4. The densitometer 3 characterizes the actual concentration of the reagent solution stored in the dissolving tank 3. The collaborative control module is set with preset reagent concentration values ​​to monitor whether the concentration of the prepared reagent solution meets the standard, thereby detecting whether there is a fault in its delivery process and avoiding the addition of reagent solutions with unbalanced concentrations to the water treatment system, which would affect its treatment process. Specifically, the preset reagent concentration value should be selected based on the liquid level of the reagent solution stored in the dissolving tank and the actual reagent solution concentration required for the wastewater to be treated. The preset reagent concentration value is the concentration value that the reagent solution stored in the dissolving tank 17 should have at the current liquid level under normal circumstances. The data of the density meter 3 and the liquid level meter 4 set in the dissolving tank 17 are collected by the collaborative control module, and then the actual concentration of the solvent solution stored in the dissolving tank 17 at the current liquid level is collected and characterized. When the actual concentration of the solvent solution at the current liquid level does not match the preset reagent concentration value, the collaborative control module will control the third electric valve gate 22 to close and control the recirculation mechanism 6 to start, and reconfigure the internal structure of the dissolving tank 17 after the reagent at the current concentration is transported until the concentration is correct. At the same time, the second electric valve gate 10 is controlled to open, and the powdered reagent is temporarily added to the wastewater treatment tank 18 through the powdered reagent dosing unit to avoid affecting its normal treatment process. Specifically, the collaborative dosing device provided in this application can control the opening and closing of the electric valve slide plate at the corresponding position and the start and stop of the recirculation mechanism 6 through the collaborative control module, so as to control the start and stop status of the liquid dosing unit and the powder dosing unit. This allows the liquid dosing unit and the powder dosing unit to have three dosing modes: independent operation, mutual backup, and collaborative dosing. This enables the liquid dosing unit and the powder dosing unit to complement each other, avoiding the problem that if one unit fails, it will be difficult to replenish the subsequent agents or chemicals in time, which could easily lead to the water treatment system losing control of its treatment process due to the interruption of dosing.

[0041] Specifically, when the dosing mode is the standalone operation of the liquid dosing unit, the first electric valve gate 7 is opened by the collaborative control module, and the powdered medicine enters the interior of the dissolving tank 17 through the powder conveying pipe 15. At this time, the stirrer 1, driven by the stirrer drive motor 2, stirs the medicine entering the dissolving tank 17 to accelerate its dissolution, and keeps the stirrer 1 running continuously to ensure that the medicine is fully dissolved while preventing it from depositing inside the dissolving tank 17, thus preparing a drug solution of the required concentration. The third electric valve gate 22 is opened by the collaborative control module, and the prepared drug solution is transported from the second dosing point to the interior of the wastewater treatment tank 18 through the drug delivery pipe for wastewater treatment.

[0042] When the dosing mode is the standalone operation of the powder dosing unit, the second electric valve gate 10 is opened, the first electric valve gate 7 is closed, and the third electric valve gate 22 is closed by the collaborative control module. The powdered medicine is transported by the screw feeder 13 and enters the interior of the wastewater treatment tank 18 through the first dosing point. The total amount of medicine entering the wastewater treatment tank 18 is controlled by the weighing device 12, and the rate of medicine entering the wastewater treatment tank 18 is controlled by controlling the operating speed of the screw feeder 13. Then, the powdered medicine and wastewater entering the tank are stirred by the wastewater agitator 19 to treat the wastewater. When the dosing mode is the collaborative dosing mode, the collaborative control module controls the first electric valve to open, the second electric valve gate 10 to close, and the third electric valve gate 22 to fully open, so that the dissolved reagent solution and undissolved powdered medicine are simultaneously introduced into the wastewater treatment tank 18 to treat the wastewater.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for co-doping powdered chemicals in a water treatment system, characterized in that, include: The liquid dosing unit consists of a dissolving tank (17), a stirrer (1), a densitometer (3), a level gauge (4), a variable frequency metering pump (5), and a recirculation mechanism (6), and is used to add and transport the dissolved drug solution. The powder dosing unit consists of a storage tank (8), a stirring device (9), a vibrating device (11), a screw feeder (13), and a weighing device (12) to add and transport undissolved powdered medicines. The collaborative control module is connected to the liquid dosing unit and the powder dosing unit respectively, and is used to control the start and stop status of the liquid dosing unit and the powder dosing unit to change the dosing mode of the device.

2. The device for co-doping powdered chemicals in a water treatment system according to claim 1, characterized in that, The medicine storage tank (8) and the dissolving tank (17) are connected by a powder conveying pipe (15). A first electric valve insert (7) is also provided at the connection between the powder conveying pipe (15) and the medicine storage tank (8). The first electric valve insert (7) is connected to the collaborative control module.

3. The device for co-doping powdered chemicals in a water treatment system according to claim 2, characterized in that, The input end of the screw feeder (13) is connected to the output end of the medicine storage tank (8). A second electric valve slide plate (10) is also provided at the connection between the screw feeder (13) and the medicine storage tank (8). The second electric valve slide plate (10) is connected to the collaborative control module. The weighing device (12) is located at the input or output end of the screw feeder (13).

4. The device for co-doping powdered chemicals in a water treatment system according to claim 3, characterized in that, The stirring device (9) is located inside the medicine storage tank (8), and the vibrating device (11) is integrated on the outer periphery of the medicine storage tank (8).

5. The device for co-doping powdered chemicals in a water treatment system according to claim 4, characterized in that, The top of the medicine storage tank (8) is movably provided with a sealing cover, and an inspection hole is provided on the side wall of the medicine storage tank (8). The top of the medicine storage tank (8) is also provided with a safety valve (20) and a dust collection device (21).

6. The device for co-doping powdered chemicals in a water treatment system according to claim 5, characterized in that, The stirrer (1) is located inside the dissolving tank (17). The density meter (3) and the level gauge (4) are both located on the outer periphery of the dissolving tank (17). A stirrer drive motor (2) for driving the stirrer (1) to operate is provided at the top of the dissolving tank (17).

7. The device for co-doping powdered chemicals in a water treatment system according to claim 6, characterized in that, The device also includes a wastewater treatment tank (18), which has a first dosing point and a second dosing point for connecting to the liquid dosing unit and the powder dosing unit, respectively.

8. The device for co-doping powdered chemicals in a water treatment system according to claim 7, characterized in that, The output end of the screw feeder (13) is connected to the second drug delivery point through the screw feeder delivery pipe (14); The wastewater treatment tank (18) is also equipped with a wastewater agitator (19).

9. The device for co-doping powdered chemicals in a water treatment system according to claim 8, characterized in that, The input end of the variable frequency metering pump (5) is connected to the output end of the dissolving tank (17). The output end of the variable frequency metering pump (5) is connected to the second drug delivery point through the drug delivery pipe. The input end of the recirculation mechanism (6) is connected to the drug delivery pipe, and the other end is connected to the dissolving tank (17).

10. The device for co-doping powdered chemicals in a water treatment system according to claim 9, characterized in that, A third electric valve plate (22) is also provided between the variable frequency metering pump (5) and the second drug administration point, and the input end of the recirculation mechanism (6) is located between the third electric valve plate (22) and the variable frequency metering pump (5). The third electric valve gate (22) is connected to the collaborative control module, which can control the opening and closing of the recirculation mechanism (6) and the third electric valve gate (22) through the density meter (3) and the level meter (4).

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