Automatic descaling device for pipes

Abstract

The utility model provides a kind of automatic descaling device for pipeline, at least includes: descaling agent tank, liquid-adding metering pump, dilution flushing tank, flushing circulating pump and control system;The descaling agent tank is used to store descaling agent stock solution, with stock solution filling port and stock solution discharge port;The liquid-adding metering pump is set to the stock solution discharge port, and descaling agent stock solution is transported to downstream by pipeline;The dilution flushing tank has the first inlet connected with water source by electric stop valve, the second inlet connected with the liquid-adding metering pump outlet, and dilution liquid outlet;One end of the flushing circulating pump is connected with the dilution liquid outlet by pipeline, and the other end is used to be connected with the pipeline to be cleaned;The control system controls the liquid-adding metering pump and the electric stop valve to open, and water and descaling agent stock solution are mixed to form descaling agent dilution after entering the dilution flushing tank, and then the flushing circulating pump is controlled to open, and the pipeline to be flushed is flushed and descaled using descaling agent dilution.

Description

Technical Field

[0001] This utility model relates to the field of pipeline descaling technology, and in particular to an automatic descaling device for pipelines. Background Technology

[0002] Piping systems are widely used in modern manufacturing processes. During use, scale and other foreign matter often accumulate inside these systems, affecting their normal operation. For example, electric furnaces are an indispensable piece of equipment in modern manufacturing processes, involving sintering, heat treatment, and other procedures. The operating temperature inside an electric furnace can often reach hundreds or even thousands of degrees Celsius, placing extremely stringent requirements on the quality of its cooling pipes. Blockage in the cooling pipes can have a fatal impact on the temperature uniformity and safety of the furnace. Over time, a large amount of rust, scale, and other foreign matter accumulates in the furnace's cooling pipes. The common method is to add a descaling agent to the entire pipe system and then activate the cooling circulation system to circulate the liquid, draining the waste liquid after a period of time. This method is rather crude and cannot precisely clean the pipes according to the actual degree of blockage, resulting in incomplete cleaning. This method can even corrode unblocked pipes outside the furnace, affecting the equipment's lifespan and, in severe cases, damaging the pipes or even external cooling towers.

[0003] Therefore, there is a need for a device that can precisely and quantitatively clean and descale pipelines with different degrees of blockage, so as to minimize the impact of descaling on the equipment, improve descaling capacity, increase the service life of the equipment, and reduce production costs. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes an automatic descaling device for pipelines. Utilizing advanced sensors and a programmable logic controller (PLC), it achieves automatic, quantitative, and precise cleaning of pipelines. After connecting tap water and descaling agent, the device can automatically complete the pipeline cleaning process by setting parameters according to cleaning requirements, eliminating the need for manual control. Using this descaling device for pipeline cleaning significantly reduces the damage to equipment caused by descaling, resulting in a more thorough cleaning in a single pass, increasing equipment lifespan, and reducing production costs for enterprises.

[0005] This utility model provides an automatic descaling device for pipelines, comprising at least: a descaling agent tank, a metering pump, a dilution flushing tank, a flushing circulation pump, and a control system. The descaling agent tank stores the descaling agent concentrate and has a concentrate filling port and a concentrate discharge port. The metering pump is located at the concentrate discharge port and delivers the descaling agent concentrate downstream through a pipeline. The dilution flushing tank has a first inlet connected to a water source via an electric shut-off valve, a second inlet connected to the outlet of the metering pump, and a diluent outlet. One end of the flushing circulation pump is connected to the diluent outlet through a pipeline, and the other end is connected to the pipeline to be cleaned. The control system is communicatively connected to the metering pump, the electric shut-off valve, and the flushing circulation pump. The control system controls the metering pump and the electric shut-off valve to open, allowing water and the descaling agent concentrate to enter the dilution flushing tank and mix to form a descaling agent dilution. Then, the control system controls the flushing circulation pump to open, using the descaling agent dilution to flush and descale the pipeline.

[0006] In one embodiment, a flow meter, a pressure sensor, and an electric pressure regulating valve are sequentially installed between the flushing circulation pump and the pipeline to be cleaned; the flow meter, the pressure sensor, and the electric pressure regulating valve are respectively communicatively connected to the control system; the control system adjusts the electric pressure regulating valve to ensure that the measured values ​​of the pressure sensor and the flow meter meet the standards.

[0007] In one embodiment, the descaling agent tank is equipped with a first pH sensor, and the dilution rinsing tank is equipped with a second pH sensor. The first pH sensor and the second pH sensor are respectively connected to the control system. The control system controls the switching of the electric shut-off valve and the liquid metering pump according to the preset pH value and the acquired values ​​of the first pH sensor and the second pH sensor, until the measured value of the second pH sensor is consistent with the preset pH value.

[0008] In one embodiment, the descaling agent tank is equipped with a first level sensor, and the dilution flushing tank is equipped with a second level sensor. The control system obtains the measurement data from the first level sensor to determine the level of the stock solution in the descaling agent tank. When the level is too low, the control system adds descaling agent stock solution to the descaling agent tank through the stock solution filling port. The control system obtains the measurement data from the second level sensor to determine the level of the diluent in the dilution flushing tank. When the level is too low, the control system controls the electric shut-off valve and the liquid metering pump to open, adding water and descaling agent stock solution to the dilution flushing tank.

[0009] In one embodiment, the dilution rinsing tank is equipped with a stirrer.

[0010] In one embodiment, the dilution rinsing tank and the descaling agent tank are respectively connected to the waste liquid recovery tank via manual shut-off valves.

[0011] In one embodiment, the outlet of the pipeline to be flushed is connected to the dilution flushing tank through a pipeline equipped with a first filter, so as to realize the recovery and reuse of the descaling agent dilution.

[0012] In one embodiment, a second filter is provided at the undiluted solution filling port of the descaling agent tank.

[0013] In one embodiment, the control system is a programmable logic controller (PLC).

[0014] In one embodiment, the automatic descaling device of this utility model further includes a touch panel; the touch panel realizes human-machine interaction through a PLC.

[0015] The automatic descaling device for pipelines provided by this utility model has at least one of the following beneficial effects:

[0016] I. The automatic descaling device of this utility model can accurately clean the pipeline to be cleaned, without over- or under-cleaning, making the cleaning more thorough.

[0017] Second, the automatic descaling device of this utility model can automate cleaning, ensuring the scientific and stable nature of cleaning and reducing labor costs;

[0018] Third, using a novel automatic descaling device to clean pipelines can extend the service life of the equipment compared to traditional methods.

[0019] Fourth, the automatic descaling device of this utility model can reduce damage to peripheral equipment and lower equipment maintenance costs.

[0020] Fifth, the automatic descaling device of this utility model can significantly reduce the cost of using descaling agents.

[0021] Upon reading the detailed embodiments and examining the accompanying drawings, those skilled in the art will recognize additional features and advantages. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the automatic descaling device according to an embodiment of the present invention. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0025] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0027] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., and should not be considered limiting. Similar terms are used throughout the description to refer to similar elements.

[0028] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0029] See Figure 1 This utility model provides an automatic descaling device for pipelines, comprising at least a descaling agent tank 1, a metering pump 2, a dilution and flushing tank 3, a flushing circulation pump 4, and a control system. The descaling agent tank 1 stores the descaling agent concentrate and has a concentrate filling port 11 and a concentrate outlet. The concentrate outlet is connected to the dilution and flushing tank 3 via the metering pump 2 and a pipeline. The descaling agent concentrate in the descaling agent tank 1 is transported to the dilution and flushing tank 3 via the metering pump 2. The dilution and flushing tank 3 has a first inlet connected to a water source via an electric shut-off valve 51, a second inlet connected to the outlet of the metering pump 2, and a diluent outlet. The descaling agent concentrate and water are mixed evenly in the dilution and flushing tank 3 and then discharged through the diluent outlet. The diluent outlet is connected to one end of the flushing circulation pump 4 via a pipeline. The other end of the flushing circulation pump 4 is used to connect to the pipeline to be cleaned (such as the electric furnace cooling pipeline 10). After the flushing circulation pump 4 is turned on, it provides power to dilute the descaling agent in the flushing tank 3, and uses the descaling agent to flush the electric furnace cooling pipes 10.

[0030] The control system is communicatively connected to the metering pump 2, the electric shut-off valve 51, and the flushing circulation pump 4, allowing the control system to control the on / off switching of these components. When using the automatic descaling device of this embodiment, the control system opens the metering pump 2 and the electric shut-off valve 51, allowing water and the descaling agent concentrate to enter the dilution flushing tank 3 and mix to form a diluted descaling agent solution. Once the diluted descaling agent solution in the dilution flushing tank 3 meets the requirements, the control system closes the metering pump 2 and the electric shut-off valve 51; the control system then opens the flushing circulation pump 4, allowing the diluted descaling agent solution to flush and descale the electric furnace cooling pipes 10.

[0031] Furthermore, the automatic descaling device in this embodiment has constant pressure flushing descaling function and constant flow flushing descaling function. For example, a flow meter 61, a pressure sensor 62, and an electric pressure regulating valve 63 are sequentially installed between the flushing circulation pump 4 and the electric furnace cooling pipe 10. The outlet of the electric pressure regulating valve 63 is connected to the electric furnace cooling pipe 10 through a pipe. The flow meter 61, pressure sensor 62, and electric pressure regulating valve 63 are respectively communicatively connected to the control system. The control system adjusts the electric pressure regulating valve 63 to ensure that the measured values ​​of the pressure sensor 62 and the flow meter 63 meet the standards.

[0032] Specifically, the pressure for descaling is provided by the flushing circulation pump 4. After the electric furnace cooling pipe 10 is connected in place, the preset pressure or preset flow rate of the flushing pipe is set. After the setting is completed, the control system adjusts the electric pressure regulating valve 63 (which controls the valve opening, thereby controlling the liquid flow cross-sectional area and thus the pressure output) according to the preset pressure and the value of the pressure sensor 62 to make the pressure of the descaling agent diluent reach the preset pressure and stabilize this pressure, or automatically adjusts the electric pressure regulating valve 63 (which controls the valve opening, thereby controlling the liquid flow cross-sectional area and thus the pipe flow) according to the preset flow rate and the measurement value of the flow meter 61 to make the flow rate of the descaling agent diluent reach the preset flow rate and stabilize this flow rate, so as to ensure the quality of descaling.

[0033] To facilitate operator adjustment of preset pressure, preset flow rate, and other preset operations, the automatic descaling device in this embodiment also includes a touch panel for human-machine interaction. The control system in this embodiment can employ a programmable logic controller (PLC). Besides human-machine interaction and real-time parameter display, the touch panel can also be used for PLC program writing, PLC program modification, communication with the PLC, program downloading, and uploading. The human-machine interaction function displays the real-time status of key points in the entire system on the interface, allowing the operator to assess the overall system status and execute necessary measures or operations. The PLC programming software allows for writing, modifying, and online monitoring of the PLC program.

[0034] Furthermore, the automatic descaling device in this embodiment also has a timed flushing and descaling function. For example, the time, pH value, pressure, and flow rate of this pipeline descaling and flushing can be preset on the touch panel. After the flushing starts, the PLC will start a countdown. After the countdown ends, the entire device will stop and issue a prompt sound to remind the operator that the flushing and descaling has been completed.

[0035] See also Figure 1 Since some pipelines to be cleaned have high requirements for the pH value of the descaling agent, the pH value of the descaling agent needs to be automatically proportioned when flushing such pipelines. For example, the descaling agent tank 1 is equipped with a first pH sensor 71, and the dilution flushing tank 3 is equipped with a second pH sensor 72. The first pH sensor 71 and the second pH sensor 72 are respectively connected to the control system PLC. The PLC can control the switching of the electric shut-off valve 51 and the liquid metering pump 2 according to the preset pH value and the values ​​obtained from the first pH sensor 71 and the second pH sensor 72, until the measured value of the second pH sensor 72 is consistent with the preset pH value.

[0036] In addition, to ensure the automatic operation of the automatic descaling device in this embodiment, the liquid volumes in the descaling agent tank 1 and the dilution flushing tank 3 need to meet certain requirements. Therefore, a first liquid level sensor 81 can be installed in the descaling agent tank 1, and a second liquid level sensor 82 can be installed in the dilution flushing tank 3. The PLC obtains the measurement data from the first liquid level sensor 81 to determine the liquid level of the original liquid in the descaling agent tank 1. When the liquid level is too low, descaling agent concentrate can be added to the descaling agent tank 1 through the concentrate filling port 11. The PLC obtains the measurement data from the second liquid level sensor 82 to determine the liquid level of the diluted liquid in the dilution flushing tank 3. When the liquid level is too low, the PLC controls the electric shut-off valve 51 and the liquid metering pump 2 to open, adding water and descaling agent concentrate to the dilution flushing tank 3.

[0037] The specific operating steps are as follows: Descaling agent tank 1 is filled with descaling agent concentrate through the concentrate filling port 11; dilution and rinsing tank 3 is connected to the tap water pipe through the electric shut-off valve 51, and the electric furnace cooling pipe 10 to be cleaned is connected in place; then, the preset pH value and preset volume of the descaling agent dilution are set on the touch panel. After the automatic descaling device is turned on, it runs automatically. The PLC adds tap water to dilute the descaling agent by controlling the opening and closing of the electric shut-off valve 51 according to the values ​​of the first pH sensor 71 and the second pH sensor 72, increases the concentration of the descaling agent by controlling the opening and closing of the liquid metering pump 2 (which can add liquid in a quantitative manner), and obtains the volume of the dilution in the dilution and rinsing tank through the second liquid level sensor 82, and finally adjusts a tank of descaling agent solution that meets the preset pH value and preset volume for cleaning.

[0038] The equipment alarms when the level of the first liquid level sensor 81 or the second liquid level sensor 82 falls below a preset value, requiring inspection for leaks or insufficient raw material supply. The equipment alarms when the flow meter 61 or pressure sensor 62 readings are abnormal, requiring inspection for leaks or connection issues in the piping. Alarm thresholds for other sensors can be set on the touch panel according to actual usage conditions to meet safe production requirements. Equipment alarms are linked to the motors of all valves; when an alarm occurs, the equipment automatically stops and closes all valves to ensure safety.

[0039] In any of the above embodiments, the dilution rinsing tank 3 is equipped with a stirrer 31 for stirring the descaling agent stock solution and water evenly.

[0040] To enable the recycling of the descaling agent and avoid waste, the outlet of the electric furnace cooling pipe 10 to be cleaned can be connected to the dilution and rinsing tank 3 to achieve the recovery and reuse of the descaling agent dilution. To ensure the cleanliness of the recycled descaling agent dilution, a first filter 91 can be installed on the pipe between the outlet of the electric furnace cooling pipe 10 and the dilution and rinsing tank 3 to filter the cleaned scale. In this embodiment, the first filter is used to remove impurities from the descaling agent and is installed at the outlet of the return water pipe to maximize the cleanliness of the descaling agent while also ensuring the stable operation of the rinsing circulation pump.

[0041] In one embodiment, a second filter 92 is provided at the raw material filling port 11 of the descaling agent tank 1. The raw descaling agent is initially filtered by the second filter 92 to ensure the cleanliness of the raw descaling agent.

[0042] In any of the above embodiments, in order to facilitate the disposal of the dirty cleaning solution after the cleaning and descaling work is completed, a waste liquid discharge port can be set at the bottom of the dilution rinsing tank 3 and the bottom of the descaling agent tank 1, respectively, and a manual shut-off valve 64 can be set at the waste liquid discharge port, which is connected to the waste liquid recovery tank.

[0043] The automatic descaling device for pipelines of this invention can achieve simultaneous operation of multiple pipelines by adding circulating pumps, sensors, instruments, etc.

[0044] This utility model discloses an automatic descaling device for pipelines. The control core and actuators of the entire system consist of a PLC, a flushing circulation pump 4, a liquid metering pump 2, an electric shut-off valve 51, and an electric pressure regulating valve 63. This device outputs descaling agent at specific pressures, flow rates, and pH levels as needed. The PLC, the core of the system, receives signals from various sensors, flow meters, and other instruments. After conversion and calculation, it outputs corresponding control signals to the actuators. This allows the system to control the pumps and valves according to the cleaning requirements of the pipeline to be cleaned, thereby outputting descaling agent cleaning solutions with different pressures, flow rates, and concentrations. Simultaneously, the system status is displayed on the touch panel.

[0045] The above embodiments can be combined with each other and have corresponding technical effects.

[0046] The automatic descaling device of this invention can accurately clean and descale cooling pipes, and the entire cleaning and descaling process can be automatically handled by the equipment through automated control, reducing labor costs.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic descaling device for pipelines, characterized in that, At least including: The descaling agent tank stores the descaling agent concentrate and has a concentrate filling port and a concentrate discharge port. A liquid metering pump is installed at the raw liquid outlet and delivers the descaling agent raw liquid to the downstream via pipeline; The dilution rinsing tank has a first inlet connected to a water source via an electric shut-off valve, a second inlet connected to the outlet of the metering pump, and a diluent outlet; A flushing circulation pump is connected at one end to the outlet of the diluent via a pipeline, and at the other end to the pipeline to be cleaned. The control system is communicatively connected to the liquid metering pump, the electric shut-off valve, and the flushing circulation pump. The control system controls the opening of the liquid metering pump and the electric shut-off valve. Water and descaling agent stock solution enter the dilution flushing tank and mix to form a descaling agent dilution solution. Then, the flushing circulation pump is controlled to open, and the descaling agent dilution solution is used to flush and remove scale from the pipeline to be flushed.

2. The automatic descaling device according to claim 1, characterized in that, A flow meter, a pressure sensor, and an electric pressure regulating valve are sequentially installed between the flushing circulation pump and the pipeline to be cleaned; the flow meter, the pressure sensor, and the electric pressure regulating valve are respectively communicatively connected to the control system; The control system adjusts the electric pressure regulating valve to ensure that the measured values ​​of the pressure sensor and the flow meter meet the standards.

3. The automatic descaling device according to claim 2, characterized in that, The descaling agent tank is equipped with a first pH sensor, and the dilution rinsing tank is equipped with a second pH sensor. The first pH sensor and the second pH sensor are respectively connected to the control system. The control system controls the switching of the electric shut-off valve and the liquid metering pump based on the preset pH value and the acquired values ​​of the first and second pH sensors, until the measured value of the second pH sensor matches the preset pH value.

4. The automatic descaling device according to claim 3, characterized in that, The descaling agent tank is equipped with a first liquid level sensor, and the dilution rinsing tank is equipped with a second liquid level sensor; The control system obtains the measurement data from the first liquid level sensor to determine the liquid level of the original liquid in the descaling agent tank. When the liquid level is too low, the control system adds the original liquid descaling agent to the descaling agent tank through the original liquid filling port. The control system obtains the measurement data from the second liquid level sensor to determine the liquid level of the diluent in the dilution flushing tank. When the liquid level is too low, it controls the electric shut-off valve and the liquid metering pump to open, adding water and descaling agent concentrate to the dilution flushing tank.

5. The automatic descaling device according to claim 4, characterized in that, The dilution rinsing tank is equipped with a stirrer.

6. The automatic descaling device according to claim 5, characterized in that, The dilution rinsing tank and the descaling agent tank are respectively connected to the waste liquid recovery tank via manual shut-off valves.

7. The automatic descaling device according to claim 1, characterized in that, The outlet of the pipeline to be flushed is connected to the dilution flushing tank through a pipeline equipped with a first filter, so as to realize the recovery and reuse of the descaling agent dilution.

8. The automatic descaling device according to claim 7, characterized in that, A second filter is installed at the undiluted solution filling port of the descaling agent tank.

9. The automatic descaling device according to any one of claims 1 to 8, characterized in that, The control system uses a programmable logic controller (PLC).

10. The automatic descaling device according to claim 9, characterized in that, It also includes a touch panel; the touch panel enables human-machine interaction through a PLC.

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