Automatic defoaming agent adding device for continuous annealing

Abstract

The invention provides a continuous annealing automatic defoaming agent adding device, and relates to the technical field of defoaming agent adding equipment.The continuous annealing automatic defoaming agent adding device comprises a defoaming agent adding box, a monitoring mechanism and a control system.The bottom of one side of the defoaming agent adding box is provided with a liquid outlet, the liquid outlet is connected with a main pipeline, and the main pipeline is connected with a first branch pipe and a second branch pipe which are connected in parallel; a first valve and an electromagnetic valve are installed on the main pipeline, a second valve and a third valve are installed on the first branch pipe and the second branch pipe respectively, the monitoring mechanism is installed on the alkali liquor storage tank, and the electromagnetic valve and the monitoring mechanism are both electrically connected with the control system. The adding amount and the adding time of the defoaming agent can be controlled, instability and errors caused by manual adding are avoided, foam in the cleaning section is always in a controllable range, and continuous and stable operation of production is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of defoamer addition equipment technology, and more particularly to an automatic defoamer addition device for continuous operation. Background Technology

[0002] In the continuous annealing cleaning section, the cleaning fluid reacts with impurities on the strip surface, easily generating a large amount of foam. Currently, the method to eliminate foam is to manually add defoamer to the storage tank frequently. Manually adding defoamer is not only labor-intensive, but the amount added is also difficult to control precisely. Insufficient addition leads to foam overflow, polluting the environment and affecting equipment operation, such as clogging pipes and reducing spraying effect; excessive addition alters the properties of the cleaning fluid, increases costs, and may affect the surface quality of the strip. Summary of the Invention

[0003] In response to the aforementioned technical problems, an automatic defoamer addition device for continuous retraction is provided.

[0004] The technical means employed in this invention are as follows:

[0005] An automatic defoamer addition device includes: a defoamer addition tank, a monitoring mechanism, and a control system. The bottom side of the defoamer addition tank is provided with a liquid outlet, which is connected to a main pipeline. The main pipeline is connected to a first branch pipe and a second branch pipe in parallel. A first valve and a solenoid valve are installed on the main pipeline. A second valve and a third valve are respectively installed on the first branch pipe and the second branch pipe. The monitoring mechanism is installed on an alkali storage tank. Both the solenoid valve and the monitoring mechanism are electrically connected to the control system.

[0006] Furthermore, the first valve, the second valve, and the third valve are all ball valves.

[0007] Furthermore, the defoamer addition box is made of corrosion-resistant stainless steel and has an addition port at the top, which is equipped with a sliding cover with opening and closing function.

[0008] Furthermore, the monitoring mechanism includes a photoelectric switch, which is installed on the upper inner wall of the storage tank.

[0009] Furthermore, the defoamer addition box is mounted on the base.

[0010] Furthermore, a footrest is provided on one side of the base, and the footrest is located below the other side of the defoamer addition box.

[0011] Furthermore, the footrest has a stepped structure.

[0012] Furthermore, the main pipe, the first branch pipe, and the second branch pipe are all made of acid and alkali resistant rubber pipes.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The automatic defoamer addition device for continuous washing provided by the present invention can achieve precise control and improve production stability: the device, through the cooperation of manual valve, solenoid valve, monitoring mechanism and control system, can control the amount and timing of defoamer addition, avoid the instability and error of manual addition, and keep the foam in the washing section within a controllable range, ensuring continuous and stable production operation.

[0014] 2. The automatic defoamer addition device provided by this invention can reduce costs and increase efficiency, thereby improving economic benefits. On the one hand, by controlling the opening of the solenoid valve through the control system, the addition of defoamer dosage can be controlled, reducing defoamer waste and lowering raw material costs. On the other hand, it saves time and labor costs associated with frequent manual additions, improving labor efficiency. Simultaneously, it reduces equipment malfunctions and maintenance frequency caused by foam, lowering equipment maintenance costs.

[0015] 3. The automatic defoamer addition device for continuous stripping provided by the present invention can improve quality and enhance product competitiveness: effectively control foam, ensure the normal implementation of the cleaning process, improve the cleaning quality of strip steel, reduce surface defects of strip steel caused by foam residue, improve product qualification rate and quality, and enhance the competitiveness of products in the market.

[0016] 4. The automatic defoamer addition device provided by this invention can achieve green and environmentally friendly operation and is in line with sustainable development: it reduces the pollution of equipment and environment caused by excessive use of defoamer and foam overflow, and enhances the corporate image.

[0017] Based on the above reasons, this invention can be widely promoted in fields such as continuous annealing production lines. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the device of the present invention.

[0020] Figure 2 This is a side view of the device of the present invention.

[0021] Figure 3 This is a top view of the device of the present invention.

[0022] Figure 4 This is a physical diagram of the device of the present invention.

[0023] In the diagram: 1. Defoamer addition box; 2. First valve; 3. Solenoid valve; 4. Second valve; 5. Base; 6. Third valve; 7. Foot pedal. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0031] During the cleaning of steel strip, the strip is cleaned twice using a cleaning solution (pre-mixed alkaline solution, which is reused after defoaming). The first cleaning is a coarse cleaning, and the second is a fine cleaning. Alkaline solution storage tanks are located beneath the strip, with two tanks placed side-by-side along the strip's running direction. The alkaline solution is sprayed onto the strip surface through nozzles extending from the tanks. The alkaline solution reacts with the strip surface to create foam, which flows back into the corresponding storage tanks. Each time the strip is cleaned, foam overflows from the storage tanks, resulting in wasted alkaline solution. Currently, the solution to this overflow is to manually and frequently add defoamer to the storage tanks.

[0032] Therefore, the present invention provides an automatic defoamer addition device for continuous annealing, which is an automatic defoamer addition control technology for the cleaning process on continuous annealing production lines.

[0033] The present invention discloses an automatic defoamer addition device for continuous retraction, comprising: a defoamer addition tank 1, a monitoring mechanism and a control system (using an existing control system). The bottom side of the defoamer addition tank 1 is provided with a liquid outlet, which is connected to a main pipeline. The main pipeline is connected to a first branch pipe and a second branch pipe in parallel. A first valve 2 and a solenoid valve 3 are installed on the main pipeline. A second valve 4 and a third valve 6 are respectively installed on the first branch pipe and the second branch pipe. The monitoring mechanism is installed on an alkali storage tank. Both the solenoid valve 3 and the monitoring mechanism are electrically connected to the control system.

[0034] Preferably, the first valve, the second valve, and the third valve are all ball valves.

[0035] Preferably, the defoamer addition box 1 is made of corrosion-resistant stainless steel, with an addition port on the top and a sliding cover with opening and closing function at the addition port.

[0036] Preferably, the monitoring mechanism includes a photoelectric switch (using an existing structural form), which is installed on the upper inner wall of the storage tank to monitor the foam height. A safe distance is maintained between the photoelectric switch and the top of the storage tank to prevent foam from overflowing too quickly; by the time the photoelectric switch detects foam, it has already overflowed rapidly.

[0037] Preferably, the defoamer addition box 1 is mounted on the base 5. A footrest 7 is provided on one side of the base 5, and the footrest 7 is located below the other side of the defoamer addition box 1. The footrest 7 has a stepped structure.

[0038] Preferably, the main pipe, the first branch pipe, and the second branch pipe are all made of acid and alkali resistant rubber pipes.

[0039] When in use, the device of this invention can also add defoamer to the storage tank at regular intervals and in measured quantities. The solenoid valve opens once every hour, for 10 minutes each time. It can also comprehensively evaluate the production process of the continuous cleaning section, the foam generation pattern (observed and summarized on-site), and the existing equipment conditions to clarify the functional requirements of the automatic addition system, such as the addition adjustment range and response time. Based on the evaluation results, an automatic addition system scheme is designed, determining the system composition, and the selection and layout of equipment such as solenoid valves, pipelines, wiring, and containers. According to the design scheme, solenoid valves, pipelines, connectors, and related accessories are procured. Non-standard equipment that cannot meet the requirements is customized to ensure that the equipment performance meets production requirements. Before installation, the addition area of ​​the continuous cleaning section is cleared to make room for the installation of the device of this invention. The on-site electrical supply is checked to ensure it meets the equipment operation requirements. The defoamer addition box, base, pipelines, solenoid valves, and other valves are installed sequentially according to the design scheme. It is ensured that the equipment can add defoamer at regular intervals and in measured quantities, that the pipeline connections are tight and leak-free, and that the wiring is standardized and neat to avoid interference. It reduces the labor intensity of operators while improving the safety of construction operations, allowing operators to devote more energy to other tasks, and optimizes the overall automation control and management.

[0040] This invention can solve the foam interference problem in the continuous annealing cleaning section through automated monitoring, timed and quantitative control, and intelligent addition, thereby achieving efficient and intelligent operation of the cleaning process, reducing labor costs, optimizing raw material consumption, and ultimately improving the automation level and product quality of strip steel production.

[0041] This invention can also utilize existing sensors to monitor the strip steel specifications and operating conditions in real time, obtain the foam generation pattern, and transmit the data to the control system. The control system controls the solenoid valve switching based on the foam generation pattern, achieving closed-loop control.

[0042] Solenoid valves and manual valves: High-precision metering pumps can be selected, which have stable flow, wide adjustment range, and can accurately control the amount added.

[0043] Control system: It is based on a PLC, receives liquid level signals to control solenoid valves, and has a human-machine interface for convenient parameter setting and monitoring.

[0044] Piping and valves: The connecting pipes are made of acid and alkali resistant rubber tubing, equipped with solenoid valves and manual shut-off valves, which are used for precise flow regulation and emergency shut-off, respectively.

[0045] Installation and debugging: 1. Installation: Fix the defoamer addition box, install the solenoid valve, lay the connecting pipes, install the foot pedal and valve, open the top addition port and sliding cover, install the control system and connect the wiring, and ensure that all components are stable, tightly connected and leak-free.

[0046] 2. Debugging: Power on the equipment to test its operation, calibrate the liquid solenoid valve, set the control system parameters, and optimize the parameters based on the test results to ensure stable and accurate operation of the device.

[0047] Benefit assessment: 1. Economic benefits: Reduces labor costs, defoamer usage, and equipment maintenance costs.

[0048] 2. Environment: Reduces waste of defoaming agents and foam pollution, improves the workshop environment, and conforms to the concept of green production.

[0049] 3. Production: Ensure stable operation of the cleaning section, improve the quality of strip steel cleaning and product qualification rate, and enhance market competitiveness.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for automatically adding defoamer during continuous operation, characterized in that, include: The defoamer addition tank (1), monitoring mechanism and control system are provided. The bottom side of the defoamer addition tank (1) is provided with a liquid outlet. The liquid outlet is connected to a main pipe. The main pipe is connected to a first branch pipe and a second branch pipe in parallel. A first valve (2) and a solenoid valve (3) are installed on the main pipe. A second valve (4) and a third valve (6) are installed on the first branch pipe and the second branch pipe, respectively. The monitoring mechanism is installed on the alkali storage tank. The solenoid valve (3) and the monitoring mechanism are electrically connected to the control system.

2. The automatic defoamer addition device for continuous retraction according to claim 1, characterized in that, The first valve, the second valve, and the third valve are all ball valves.

3. The automatic defoamer addition device for continuous retraction according to claim 1, characterized in that, The defoamer addition box (1) is made of corrosion-resistant stainless steel and has an addition port on the top. The addition port is equipped with a sliding cover with opening and closing function.

4. The automatic defoamer addition device for continuous retraction according to claim 1, characterized in that, The monitoring device includes a photoelectric switch, which is installed on the upper inner wall of the storage tank.

5. The automatic defoamer addition device for continuous retraction according to claim 1, characterized in that, The defoamer addition box (1) is installed on the base (5).

6. The automatic defoamer addition device for continuous retraction according to claim 5, characterized in that, A footrest (7) is provided on one side of the base (5), and the footrest (7) is located below the other side of the defoamer addition box (1).

7. The automatic defoamer addition device for continuous retraction according to claim 6, characterized in that, The footrest (7) has a stepped structure.

8. The automatic defoamer addition device for continuous retraction according to claim 1, characterized in that, The main pipe, the first branch pipe, and the second branch pipe are all made of acid and alkali resistant rubber pipes.

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