Liquid caustic soda adding and conveying system

Abstract

The utility model relates to a liquid caustic soda adding and conveying system. The caustic soda liquid adding and conveying system comprises a caustic soda liquid storage tank, a variable-frequency caustic soda liquid pump, a treatment pond, a flushing water tank and a controller; a liquid conveying pipeline is connected between a liquid outlet of the liquid caustic soda storage tank and the treatment pond, a first control valve and a variable-frequency liquid caustic soda pump are sequentially installed on the liquid conveying pipeline, the installation height of the flushing water tank is higher than that of the liquid caustic soda storage tank, a water outlet of the flushing water tank is connected with the liquid conveying pipeline through a flushing pipeline, and the connection point is located between the first control valve and the variable-frequency liquid caustic soda pump. A second control valve is mounted on the flushing pipeline, and the first control valve, the variable-frequency liquid caustic soda pump and the second control valve are electrically connected with the controller respectively. The pipeline and the variable-frequency liquid caustic soda pump are flushed through the flushing water tank, liquid caustic soda in the pipeline and the variable-frequency liquid caustic soda pump is flushed out, the pipeline and the variable-frequency liquid caustic soda pump are filled with cleaning water, the pipeline and the variable-frequency liquid caustic soda pump are prevented from being corroded by the liquid caustic soda, the service life of the variable-frequency liquid caustic soda pump is prolonged, and the construction risk of maintenance personnel is reduced.

Description

Technical Field

[0001] This application relates to the field of liquid alkali dosing and conveying technology, and in particular to a liquid alkali dosing and conveying system. Background Technology

[0002] In related technologies, liquid alkali is stored in a designated storage tank. When in use, the liquid alkali is pumped to the treatment tank by a variable frequency liquid alkali pump for pH adjustment. The variable frequency liquid alkali pump starts when the water treatment is started and stops when the system is shut down. Because the start-up is not fixed, it is turned on every few hours, and sometimes only once a day. During the process of the variable frequency liquid alkali pump stopping, the liquid alkali will crystallize in the variable frequency liquid alkali pump and pipeline, affecting production and causing corrosion damage to the variable frequency liquid alkali pump. A lot of manpower and resources are wasted on repairing and replacing the variable frequency liquid alkali pump. Maintenance personnel also face the risk of being burned by liquid alkali when repairing the variable frequency liquid alkali pump and cleaning the pipeline. Utility Model Content

[0003] To address or partially address the problems existing in related technologies, this application provides a liquid alkali dosing and delivery system that can extend the service life of variable frequency liquid alkali pumps and reduce the construction risks for maintenance personnel.

[0004] This application provides a liquid alkali dosing and delivery system, including a liquid alkali storage tank 1, a variable frequency liquid alkali pump 2, a treatment tank 3, a flushing water tank 4, and a controller; a delivery pipeline 5 connects the outlet of the liquid alkali storage tank 1 and the treatment tank 3, and a first control valve 6 and the variable frequency liquid alkali pump 2 are installed sequentially on the delivery pipeline 5. The flushing water tank 4 is installed at a higher height than the liquid alkali storage tank 1, and its outlet is connected to the delivery pipeline 5 through a flushing pipeline 7, with the connection point located between the first control valve 6 and the variable frequency liquid alkali pump 2. A second control valve 8 is installed on the flushing pipeline 7, and the first control valve 6, the variable frequency liquid alkali pump 2, and the second control valve 8 are electrically connected to the controller.

[0005] Optionally, in some embodiments, a level gauge 9 is installed on the upper end of the inner wall of the flushing water tank 4, and a water supply pipe 10 connected to a water source is connected to the water inlet of the flushing water tank 4. A third control valve 11 is installed on the water supply pipe 10, and the level gauge 9 and the third control valve 11 are electrically connected to the controller.

[0006] Optionally, in some embodiments, a water flow meter 12 is installed on the flushing pipe 7, and the water flow meter 12 is electrically connected to the controller.

[0007] The technical solution provided in this application may include the following beneficial effects:

[0008] This application uses a flushing water tank to flush the pipelines and variable frequency liquid alkali pumps, flushing out the liquid alkali inside and filling them with cleaning water. This prevents the liquid alkali from corroding the pipelines and pumps, extends the service life of the variable frequency liquid alkali pumps, saves time and effort, and reduces the construction risks for maintenance personnel.

[0009] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0010] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0011] Figure 1 This is a schematic diagram of the liquid alkali dosing and delivery system shown in the embodiments of this application.

[0012] Figure label:

[0013] 1-Liquid alkali storage tank, 2-Variable frequency liquid alkali pump, 3-Treatment pool, 4-Flushing water tank, 5-Liquid delivery pipeline, 6-First control valve, 7-Flushing pipeline, 8-Second control valve, 9-Level gauge, 10-Water supply pipeline, 11-Third control valve, 12-Water flow meter. Detailed Implementation

[0014] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0015] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0017] 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] To address the aforementioned issues, this application provides a liquid alkali dosing and delivery system that can extend the service life of the variable frequency liquid alkali pump and reduce the construction risks for maintenance personnel.

[0019] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0020] See Figure 1 The liquid alkali dosing and delivery system includes a liquid alkali storage tank 1, a variable frequency liquid alkali pump 2, a treatment tank 3, a flushing water tank 4, and a controller. A delivery pipeline 5 connects the outlet of the liquid alkali storage tank 1 and the treatment tank 3. A first control valve 6 and the variable frequency liquid alkali pump 2 are installed sequentially on the delivery pipeline 5. The flushing water tank 4 is installed at a higher height than the liquid alkali storage tank 1. Its outlet is connected to the delivery pipeline 5 through a flushing pipeline 7, and the connection point is located between the first control valve 6 and the variable frequency liquid alkali pump 2. A second control valve 8 is installed on the flushing pipeline 7. The first control valve 6, the variable frequency liquid alkali pump 2, and the second control valve 8 are electrically connected to the controller.

[0021] During operation, when the liquid alkali in the treatment tank 3 reaches the required amount, the first control valve 6 closes and the variable frequency liquid alkali pump 2 stops working. At this time, the delivery pipeline 5 and the variable frequency liquid alkali pump 2 are filled with liquid alkali. Then, the controller controls the second control valve 8 to open. Since the installation height of the flushing water tank 4 is higher than that of the liquid alkali storage tank 1, the cleaning water in the flushing water tank 4 enters the delivery pipeline 5 and the variable frequency liquid alkali pump 2, filling the treatment tank 3 with liquid alkali. This prevents the liquid alkali from corroding the pipeline and the variable frequency liquid alkali pump, extends the service life of the variable frequency liquid alkali pump, saves time and effort, and reduces the construction risk for maintenance personnel.

[0022] In some embodiments, a level gauge 9 is installed on the upper end of the inner wall of the flushing water tank 4, and a water supply pipe 10 connected to a water source is connected to the water inlet of the flushing water tank 4. A third control valve 11 is installed on the water supply pipe 10, and the level gauge 9 and the third control valve 11 are electrically connected to the controller.

[0023] During operation, the level gauge 9 detects whether the cleaning water in the flushing water tank 4 has reached the designated level, and then transmits the signal to the controller. When the level has not reached the designated level, the third control valve 11 is in the open state, and water is supplied through the water supply pipe 10. When the level reaches the designated level, the controller controls the third control valve 11 to close, preventing the cleaning water in the flushing water tank 4 from overflowing.

[0024] In some embodiments, a water flow meter 12 is installed on the flushing pipe 7, and the water flow meter 12 is electrically connected to the controller.

[0025] During operation, the sum of the water capacity of the flushing pipe 7 between the water flow meter 12 and the infusion pipe 5, the water capacity of the infusion pipe 5 between the first control valve 6 and the treatment tank 3, and the water capacity of the variable frequency liquid alkali pump 2 is first measured and set as the preset flow rate value. When the second control valve 8 is opened and the water flow rate through the water flow meter 12 reaches the preset flow rate value, a signal is transmitted to the controller. The controller controls the second control valve 8 to close. At this time, the flushing pipe 7 between the water flow meter 12 and the infusion pipe 5, the infusion pipe 5 between the first control valve 6 and the treatment tank 3, and the variable frequency liquid alkali pump 2 are all filled with cleaning water to prevent too much cleaning water from entering the treatment tank 3 and affecting the liquid alkali concentration in the treatment tank 3. At this time, the amount of cleaning water in the pipes is insufficient to affect the liquid alkali concentration in the treatment tank 3 and will not affect subsequent construction. It can also prevent the liquid alkali from corroding the pipes and the variable frequency liquid alkali pump.

[0026] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0027] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0028] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A liquid alkali dosing and conveying system, characterized in that: The liquid alkali dosing and delivery system includes a liquid alkali storage tank (1), a variable frequency liquid alkali pump (2), a treatment tank (3), a flushing water tank (4), and a controller. A delivery pipeline (5) is connected between the outlet of the liquid alkali storage tank (1) and the treatment tank (3). A first control valve (6) and a variable frequency liquid alkali pump (2) are installed sequentially on the delivery pipeline (5). The flushing water tank (4) is installed at a higher height than the liquid alkali storage tank (1). Its outlet is connected to the delivery pipeline (5) through a flushing pipeline (7), and the connection point is located between the first control valve (6) and the variable frequency liquid alkali pump (2). A second control valve (8) is installed on the flushing pipeline (7). The first control valve (6), the variable frequency liquid alkali pump (2), and the second control valve (8) are electrically connected to the controller.

2. The liquid alkali dosing and conveying system according to claim 1, characterized in that: A level gauge (9) is installed on the upper end of the inner wall of the flushing water tank (4). A water supply pipe (10) connected to the water source is connected to the water inlet of the flushing water tank (4). A third control valve (11) is installed on the water supply pipe (10). The level gauge (9) and the third control valve (11) are electrically connected to the controller.

3. The liquid alkali dosing and conveying system according to claim 1 or 2, characterized in that: A water flow meter (12) is installed on the flushing pipe (7), and the water flow meter (12) is electrically connected to the controller.

Images