A circulating tank defoaming system, control method and related equipment

Abstract

The application provides a circulating tank defoaming system, a control method and related equipment. The system comprises: a foam elimination assembly, an inlet end of the foam elimination assembly being located in a foam layer of a liquid surface of a circulating tank; and a mist elimination assembly, the mist elimination assembly being sleeved on an outlet end of the foam elimination assembly, and the mist elimination assembly being used for collecting mist generated after the foam elimination assembly performs a defoaming operation, so that the mist enters the circulating tank. The circulating tank defoaming system provided by the application can realize adsorption and destruction of bubbles generated by an environmental protection coating in the circulating tank, and can eliminate mist generated after the bubbles are broken, which is beneficial to improving the quality of an alloy surface and recycling the mist, so that pollution to the environment can be reduced.

Description

Technical Field

[0001] This invention relates to the field of alloy coating technology, and in particular to a defoaming system, control method and related equipment for a circulating tank. Background Technology

[0002] Currently, in the process of adding environmentally friendly coatings to alloys, such as in the coating of cold-rolled silicon steel, the high viscosity of the environmentally friendly coating makes it prone to foaming, which in turn reduces the surface quality of the alloy. Existing technologies mostly use chemical agents for defoaming. However, the amount of chemical agents added is difficult to control. On the one hand, adding too many chemicals can easily lead to a decline in the surface quality of the alloy; on the other hand, adding too few chemicals cannot effectively control foam formation, and once the foam overflows, it can easily cause environmental pollution.

[0003] Therefore, a new technical solution is urgently needed to solve the above problems. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect, the present invention provides a defoaming system for a circulating tank, comprising: a foam elimination component, the inlet end of which is located in the foam layer on the surface of the liquid in the circulating tank; and a droplet elimination component, which is sleeved on the outlet end of the foam elimination component, the droplet elimination component being used to collect droplets generated after the foam elimination component performs defoaming operation, so that the droplets enter the circulating tank.

[0006] Optionally, the foam elimination assembly includes: a foam suction device, the first end of which is placed in the foam layer on the surface of the liquid in the circulation tank for sucking up foam; and a foam inlet device, one end of which is connected to the second end of the foam suction device, and the other end of which is connected to the mist elimination assembly, the foam inlet device being used to guide the foam sucked up by the foam suction device to the mist elimination assembly; the bending angle between the foam suction device and the foam inlet device is less than or equal to 90 degrees.

[0007] Optionally, the other end of the foam inlet is provided with a hole; the circulating tank defoaming system also includes: a pressure regulating component, which is inserted into the gas flow channel formed by the foam inlet through a preset hole in the foam inlet, and the pressure regulating component is used to input preset pressure gas.

[0008] Optionally, the foam suction device has a funnel shape at its first end within a preset length range, and the cross-sectional area of ​​the first end is larger than the cross-sectional area of ​​the other ends.

[0009] Optionally, the mist elimination component includes: a liquid collection and venting component, the side surface of which has a first preset number of venting holes; and a mist collecting component, which is sleeved on the outside of the liquid collection and venting component, and the mist collecting component and the liquid collection and venting component form a return cavity, the return cavity being used to return the mist discharged from the venting holes, and the side surface of the mist collecting component corresponding to the circulation tank having a second preset number of draining holes, the draining holes being used to discharge mist, wherein the first preset number is greater than the second preset number.

[0010] Optionally, the parallelism between the end of the pressure regulating element that extends into the gas flow channel and the gas flow channel is greater than a preset parallelism.

[0011] Optionally, the distance between the outlet end of the pressure regulator extending into the gas flow channel and the smaller sidewall of the foam inlet away from the circulation tank is less than or equal to one-third of the diameter of the foam inlet.

[0012] Secondly, the present invention proposes a defoaming control method for a circulating tank, used to control a circulating tank defoaming system, comprising: obtaining the volume of foam to be eliminated in the circulating tank; and controlling the gas pressure flowing into the foam elimination component based on the volume of foam to be eliminated.

[0013] Optionally, the above method further includes: obtaining the foam flow rate; and controlling the gas pressure based on the foam flow rate and foam volume.

[0014] Thirdly, the present invention proposes a defoaming control device for a circulating tank, comprising: an acquisition unit for acquiring the volume of foam to be eliminated in the circulating tank; and a control unit for controlling the gas pressure flowing into the foam elimination component based on the volume of foam to be eliminated.

[0015] Compared to existing technologies, the defoaming system for circulating tanks proposed in this application, by configuring a foam elimination component with its inlet end located in the foam layer on the surface of the liquid in the circulating tank, adsorbs and breaks down the bubbles generated by the environmentally friendly coating in the circulating tank. Subsequently, by configuring a droplet elimination component, which is fitted onto the outlet end of the foam elimination component, the droplet elimination component is used to collect the droplets generated after the foam elimination component performs the defoaming operation, so that the droplets enter the circulating tank. This achieves the elimination of droplets generated after the bubbles burst, which is beneficial to improving the quality of the alloy surface. At the same time, the droplets can be recycled, thereby reducing environmental pollution. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of a circulating tank defoaming system according to an embodiment of this application; Figure 2 A structural schematic diagram of a circulating tank defoaming system according to another embodiment of this application; Figure 3 This application provides a schematic flowchart of a circulating tank defoaming control method according to an embodiment of the present application. Figure 4 A flowchart illustrating another embodiment of the defoaming control method for a circulating tank provided in this application; Figure 5 A schematic block diagram of the structure of a ring tank defoaming control device according to an embodiment of this application.

[0017] in, Figures 1-2 The correspondence between the reference numerals in the attached drawings and the names of the components is as follows: 100 Foam Elimination Kit; 200 Foam Elimination Kit; 110 Foam suction unit; 120 Foam inlet unit; 210 Liquid collection and exhaust unit; 220 Droplet agglomeration unit; 121 Hole body; 211 Vent hole body; 221 Drain hole body. Detailed Implementation

[0018] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0019] In a first aspect, the present invention provides a defoaming system for a circulating tank. Figure 1 and Figure 2 A structural schematic diagram of a circulating tank defoaming system according to an embodiment of this application is provided. Figures 1-2 As shown, the system may include: a foam elimination component 100 and a fog elimination component 200.

[0020] Foam elimination component 100, the inlet end of which is located in the foam layer on the surface of the liquid in the circulation tank; mist elimination component 200, which is sleeved on the outlet end of foam elimination component 100, is used to collect the mist generated after the foam elimination component 100 performs defoaming operation, so that the mist can enter the circulation tank.

[0021] It is understood that the foam elimination component 100 can be made of polymeric synthetic materials, such as polyvinyl chloride. The fog elimination component 200 can be bonded to the outlet end of the foam elimination component 100 by heat fusion.

[0022] It should be noted that the foam elimination component 100 can eliminate or break up foam by introducing high-speed flowing fluid.

[0023] For example, the foam elimination assembly 100 may include a PVC pipe with a length of 400 mm and a PVC pipe with a length of 300 mm. The PVC pipe may be a 3-point PVC pipe. The 400 mm PVC pipe and the 300 mm PVC pipe may be connected by an elbow.

[0024] Specifically, a high-speed fluid is introduced into the foam elimination component 100. As the flow velocity around the foam in the foam elimination component 100 increases, the external pressure of the foam decreases. Since the internal pressure of the foam is greater than the external pressure, the foam itself becomes unbalanced and then breaks into smaller droplets. After the droplets enter the droplet elimination component 200, they can be aggregated into larger droplets, which facilitates discharge and recycling.

[0025] The defoaming system for the circulating tank proposed in this application, by configuring a foam elimination component 100, with its inlet end located in the foam layer on the surface of the liquid in the circulating tank, adsorbs and breaks down the bubbles generated by the environmentally friendly coating in the circulating tank. Subsequently, by configuring a droplet elimination component 200, which is sleeved on the outlet end of the foam elimination component 100, the droplet elimination component 200 is used to collect the droplets generated after the foam elimination component 100 performs the defoaming operation, so that the droplets enter the circulating tank. This achieves the elimination of droplets generated after the bubbles burst, which is beneficial to improving the quality of the alloy surface. At the same time, the droplets can be recycled, thereby reducing environmental pollution.

[0026] In some feasible embodiments, the foam elimination component 100 may include: a foam suction member 110, the first end of which is placed in the foam layer on the surface of the liquid in the circulation tank for absorbing foam; and a foam inlet member 120, one end of which is connected to the second end of the foam suction member 110, and the other end of which is connected to the mist elimination component 200, the foam inlet member 120 being used to guide the foam absorbed by the foam suction member 110 into the mist elimination component 200; the bending angle between the foam suction member 110 and the foam inlet member 120 is less than or equal to 90 degrees.

[0027] It should be noted that the first end of the foam suction device 110 is placed in the foam layer on the surface of the liquid in the circulation tank and should not come into direct contact with the environmentally friendly coating liquid phase in the circulation tank.

[0028] It is understandable that, such as Figures 1-2 As shown, the bending angle between the foam suction component 110 and the foam inlet component 120 A bend angle of 90 degrees or less can be achieved by selecting an elbow with an angle of 90 degrees or less. Therefore, by limiting the bend angle between the foam intake 110 and the foam inlet 120 to 90 degrees or less, it is possible to effectively prevent the liquid droplets from flowing back along the pipe wall and atomizing. For example, the foam intake 110 can be a 3-point PVC pipe with a length of 400 mm, and the foam inlet 120 can be a 3-point PVC pipe with a length of 300 mm.

[0029] Specifically, one end of a 400 mm long three-part PVC pipe, i.e., the foam intake component 110, is placed in the foam layer on the surface of the liquid in the circulation tank. The other end of the foam intake component 110 is connected to one end of a 300 mm long three-part PVC pipe, i.e., the foam inlet component 120, by heat fusion using a right-angle elbow. The other end of the foam inlet component 120 is connected to the mist elimination component 200 by heat fusion.

[0030] Understandably, high-speed fluid can be introduced into the 300mm long three-part PVC pipe, i.e., the foam inlet 120. Due to the action of the fluid, the foam on the liquid surface will pass through the 400mm long three-part PVC pipe, i.e., the foam suction device 110, enter the right-angle bend, and then enter the foam inlet 120 with a higher flow rate. Due to the change in the flow rate of the environment around the foam, the external pressure of the foam decreases, resulting in the external pressure of the foam being less than the internal pressure of the foam. The foam eventually breaks into small droplets due to the unequal pressure on the inside and outside. The small droplets can flow into the droplet elimination component 200 at the end of the system along with the high-speed fluid. The droplet elimination component 200 will agglomerate the small droplets into larger droplets and then discharge them from the circulation tank defoaming system along with the fluid.

[0031] It should be noted that large droplets can be recovered by placing the droplet elimination component 200 horizontally above the circulation tank. The circulation tank defoaming system proposed in this application, through the configuration of a foam suction component 110, with its first end placed in the foam layer on the liquid surface of the circulation tank for foam absorption; and a foam inlet component 120, one end of which is connected to the second end of the foam suction component 110, and the other end of which is connected to the droplet elimination component 200, is used to guide the foam absorbed by the foam suction component 110 to the droplet elimination component 200. This system achieves segmented detachable connection of the foam suction component 110, and by limiting the bending angle between the foam suction component 110 and the foam inlet component 120 to less than or equal to 90 degrees, it facilitates efficient adsorption and destruction of foam. Furthermore, a bending angle of less than or equal to 90 degrees effectively prevents the droplet liquid from flowing back along the pipe wall and atomizing.

[0032] In some feasible implementations, the other end of the foam inlet 120 is provided with a hole 121; the circulating tank defoaming system also includes a pressure regulating component, which is inserted into the gas flow channel formed by the foam inlet 120 through a preset hole, and the pressure regulating component is used to input preset pressure gas.

[0033] It is understood that the aforementioned pressure regulating component may include a pressure supply device and a pressure regulating valve, thereby achieving a stable supply of gas at a preset pressure to the foam inlet 120. Simultaneously, the preset pressure can be controlled to be greater than or equal to 0.5 MPa and less than or equal to 0.8 MPa.

[0034] Understandably, to increase the gas flow rate in this system, the diameters of the foam inlet 120 and the foam suction 110 can be controlled to be greater than or equal to 15 mm and less than or equal to 20 mm. Therefore, by configuring a pressure regulator, which is inserted into the gas flow channel formed by the foam inlet 120 through a preset orifice, and uses a preset pressure gas input, a stable high-speed gas flow can be introduced into the foam inlet 120. This alters the external pressure environment of the foam within the foam inlet 120, thereby eliminating foam on the surface without adding any chemical agents, which is beneficial for improving the alloy surface quality. Furthermore, by controlling the input of the preset pressure gas, excessively high gas pressure can be effectively avoided, which would cause the droplets formed after foam rupture to directly atomize and overflow from the system, making effective recovery impossible.

[0035] Specifically, taking a 300mm long three-part PVC pipe as an example, the foam inlet 120 can have an 8mm diameter hole 121 at the other end. A gas pipe with a pressure of 0.6 MPa can be inserted into the hole 121, thereby connecting the foam inlet 120 to the gas supply pipe. A pressure regulating valve can be installed on the pipe to control the flow rate of the gas entering the system.

[0036] It should be noted that the gas output end of the pipeline can be directed toward the droplet elimination component 200, thereby guiding the droplets after the foam inlet 120 bursts and preventing the droplets from flowing back.

[0037] In some feasible embodiments, the foam suction member 110 is funnel-shaped within a predetermined length range of its first end, and the cross-sectional area of ​​the first end is larger than the cross-sectional area of ​​the other ends.

[0038] It is understandable that placing the end of the foam suction device 110 with a cross-sectional area larger than other cross-sections in the foam layer on the surface of the liquid in the circulation tank can improve the foam suction efficiency of the foam suction device 110, thereby improving the foam elimination efficiency of the system.

[0039] Specifically, when the foam suction device 110 is a PVC pipe with a diameter of 30 mm, the first end of the foam suction device 110 can be a flared tube with a diameter of 60 mm.

[0040] Therefore, by controlling the first end of the foam suction device 110 to be funnel-shaped within a preset length range, and the cross-sectional area of ​​the first end being larger than the cross-sectional area of ​​other sections, this system can effectively increase the contact area between the foam suction device 110 and the foam layer, thereby improving the foam suction efficiency of the foam suction device 110.

[0041] In some feasible embodiments, the mist elimination component 200 may include: a liquid collection and exhaust component 210, the liquid collection and exhaust component 210 having a first preset number of exhaust holes 211 around its periphery; a mist collection component 220, the mist collection component 220 being sleeved on the outside of the liquid collection and exhaust component 210, the mist collection component 220 and the liquid collection and exhaust component 210 forming a return cavity, the return cavity being used to return the mist discharged from the exhaust holes 211, the side surface of the mist collection component 220 corresponding to the circulation tank having a second preset number of drain holes 221, the drain holes 221 being used to discharge mist, the first preset number being greater than the second preset number.

[0042] Understandably, the droplet elimination component 200 can be horizontally positioned above the circulation tank so that droplets can return to the circulation tank via the drain hole 221. A first predetermined number of vent holes 211 can be formed around the periphery of the liquid collection and venting component 210, which simultaneously introduce gas and small-volume droplets generated after foam bursting into the droplet aggregator 220. Since the droplet aggregator 220 is located outside the liquid collection and venting component 210, and the droplet aggregator 220 and the liquid collection and venting component 210 form a return cavity, small-volume droplets can flow in the return cavity, thereby converging into a large volume of liquid, which is then discharged from the system through the drain holes 221 on the side surface of the droplet aggregator 220 corresponding to the circulation tank, and flows back into the circulation tank.

[0043] It should be noted that if small droplets are emitted directly, they are easily affected by the gas flow rate and enter the atmosphere, thus polluting the environment. However, large droplets that have been collected can flow back into the circulation tank smoothly due to gravity.

[0044] Specifically, the liquid collecting and venting component 210 can be a tube with a diameter of 50 mm and a length of 200 mm, and can have venting holes 211 with a diameter of 5 mm around its perimeter. The spacing between the venting holes 211 can be 5 mm. The droplet aggregator 220 can be a tube with a diameter of 100 mm and a length of 300 mm, and can have a draining hole 221 with a width of 5 mm and a length of 250 mm at its bottom. The droplet aggregator 220 can be coaxially sleeved on the outside of the liquid collecting and venting component 210. It is understood that due to the size difference between the droplet aggregator 220 and the liquid collecting and venting component 210, a return cavity can be formed in both components to facilitate the collection and return of droplets.

[0045] For example, foam enters the foam inlet 120 through the foam suction device 110. Due to the inflow of high-speed gas, the pressure on the inner and outer walls of the foam becomes unbalanced, causing it to break into small droplets. These small droplets flow into the liquid collection and exhaust device 210 along with the gas, and then enter the return chamber through the exhaust holes 211 in the liquid collection and exhaust device 210. In the return chamber, the small droplets converge into larger droplets, which are then discharged from the droplet elimination component 200 along with the gas through the drain holes 221. The gas is directly discharged into the atmosphere, while the droplets flow back into the circulation tank due to gravity. Thus, the circulation tank defoaming system provided in this application, by configuring the liquid collection and exhaust device 210, with a first preset number of exhaust holes 211 on its side surface, can achieve the diversion of gas and droplets. Then, by configuring a droplet aggregator 220, which is sleeved on the outside of the liquid collection and exhaust device 210, a return cavity is formed between the droplet aggregator 220 and the liquid collection and exhaust device 210. The return cavity is used to return the droplets discharged from the exhaust port 211. The side surface of the droplet aggregator 220 corresponding to the circulation tank has a second preset number of drain ports 221 for discharging droplets. The first preset number is greater than the second preset number, which can effectively achieve the aggregation of droplets flowing through the exhaust port 211 and then entering the return cavity. The droplets are then discharged uniformly through the drain ports 221, which can effectively prevent droplets from directly entering the atmosphere and causing environmental pollution. It can also effectively collect the aggregated droplets and discharge them into the circulation tank, achieving effective recovery of droplets.

[0046] In some feasible implementations, the parallelism between the end of the pressure regulating element that extends into the gas flow channel and the gas flow channel is greater than a preset parallelism.

[0047] Understandably, the angle deviation between the end of the pressure regulator that rises into the gas flow channel and the gas flow channel can easily cause the liquid droplets to flow back along the pipe wall and atomize.

[0048] Therefore, by controlling the parallelism between the end of the pressure regulating component that extends into the gas flow channel and the gas flow channel to be greater than the preset parallelism, it is possible to effectively prevent the liquid droplets from flowing back along the pipe wall and atomizing.

[0049] Specifically, the parallelism between the end of the pressure regulating element that extends into the gas flow channel and the gas flow channel can be greater than or equal to 95%.

[0050] Therefore, by ensuring that the parallelism between the end of the pressure regulating component that extends into the gas flow channel and the gas flow channel is greater than or equal to 95%, it is possible to effectively prevent the liquid droplets from flowing back along the pipe wall and atomizing, thereby improving the subsequent aggregation and diversion of the droplets, thus improving the surface quality of the alloy and reducing environmental pollution.

[0051] In some feasible implementations, the distance between the outlet end of the pressure regulator extending into the gas flow channel and the smaller sidewall of the foam inlet 120 away from the circulation tank is less than or equal to one-third of the diameter of the foam inlet 120.

[0052] It is understandable that... Figure 2 The distance between the outlet end of the pressure regulating element extending into the gas flow channel and the smaller side wall of the foam inlet 120 away from the circulation tank is shown. The diameter is less than or equal to one-third of the diameter of the foam inlet 120, so that the outlet end of the pressure regulating component that extends into the gas flow channel can be placed in a relatively central position of the foam inlet 120. This is beneficial to make the external pressure on the foam on both sides of the upper and lower walls of the foam inlet 120 equal, thereby symmetrically eliminating the foam in the foam inlet 120. This also ensures that the foam elimination speed on both sides of the upper and lower walls of the foam inlet 120 is equal, avoiding the situation where the foam elimination speed is faster in some positions and slower in others.

[0053] For example, when the foam inlet 120 is made of a PCV pipe with a diameter greater than or equal to 15 mm, the distance between the outlet end of the pressure regulator extending into the gas flow channel and the side wall of the foam inlet 120 away from the circulation tank can be controlled. Less than or equal to 5 millimeters.

[0054] Therefore, by controlling the distance between the outlet end of the pressure regulator extending into the gas flow channel and the smaller side wall of the foam inlet 120 away from the circulation tank to be less than or equal to one-third of the diameter of the foam inlet 120, the above system can effectively achieve synchronous elimination of foam on both sides of the upper and lower walls of the foam inlet 120, avoiding uneven elimination.

[0055] Secondly, this invention proposes a defoaming control method for a circulating tank, used to control the defoaming system of the circulating tank. Figure 3 This is a schematic flowchart illustrating a defoaming control method for a circulating tank according to an embodiment of this application. Figure 3 As shown, method 300 may include the following steps: Step S310: Obtain the volume of foam to be eliminated in the circulation tank.

[0056] For example, the volume of foam to be eliminated in the circulation tank can be automatically calculated by obtaining the depth of the foam to be eliminated in the circulation tank and combining it with the cross-sectional area of ​​the circulation tank using a volume formula.

[0057] Step S320: Based on the volume of foam to be eliminated, control the gas pressure flowing into the foam elimination component 100.

[0058] For example, the gas pressure flowing into the foam elimination component 100 can be controlled based on the volume of foam to be eliminated obtained in step S310. It is understood that the gas pressure flowing into the foam elimination component 100 is directly proportional to the volume of foam to be eliminated.

[0059] It should be noted that the gas pressure flowing into the foam elimination component 100 must be greater than or equal to 0.5 MPa and less than or equal to 0.8 MPa.

[0060] Therefore, the defoaming control method for the circulating tank proposed in this invention can control the gas pressure flowing into the foam elimination component 100 based on the volume of foam to be eliminated in the circulating tank in real time by acquiring the volume of foam to be eliminated in real time. This allows for real-time adjustment of the gas pressure entering the foam elimination component 100 based on the volume of foam to be eliminated, thereby accurately controlling the foam elimination speed according to the actual situation.

[0061] Figure 4 A schematic flowchart of a defoaming control method for a circulating tank according to another embodiment of this application is provided. In a feasible implementation, the above method 300 may further include the following steps: Step S330: Obtain the foam flow rate.

[0062] For example, a liquid flow rate sensor can be configured in the foam elimination component 100 and the foam suction component 110 to obtain the foam flow rate in real time.

[0063] Step S340: Control the gas pressure based on foam flow rate and foam volume.

[0064] For example, the gas pressure can be controlled by using the volume of foam to be eliminated obtained in step S310 and the foam flow rate obtained in step S330, and by automatically adjusting the opening of the pressure regulating valve in the pressure regulating component. It is understood that the gas pressure and the foam flow rate are inversely proportional.

[0065] Therefore, the above method, by obtaining the foam flow rate and controlling the gas pressure based on the foam flow rate and foam volume, achieves effective control of gas pressure by comprehensively considering the foam flow rate and foam volume. This effectively avoids the situation where the foam droplets generated after foam rupture due to excessive gas pressure and excessive flow rate are atomized and cannot be efficiently recovered.

[0066] Thirdly, the present invention proposes a defoaming control device for annular tanks. Figure 5 This is a structural schematic block diagram of a ring tank defoaming control device according to an embodiment of this application. Figure 5 As shown, the device 400 may include: an acquisition unit 410 and a control unit 420.

[0067] The acquisition unit 410 is used to acquire the volume of foam to be eliminated in the circulation tank.

[0068] Control unit 420 is used to control the gas pressure flowing into the foam elimination component based on the volume of foam to be eliminated.

[0069] Those skilled in the art can understand the specific details and beneficial effects of the defoaming control device for the circulating tank by reading the above description of the defoaming control method for the circulating tank, and will not be repeated here for the sake of brevity.

[0070] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and / or device can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0071] 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.

[0072] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0073] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0074] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0075] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be 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 invention according to the specific circumstances.

[0076] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," 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 the present invention. 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.

[0078] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A defoaming system for a circulating tank, characterized in that, include: A foam elimination assembly, wherein the inlet end of the foam elimination assembly is located in the foam layer on the surface of the liquid in the circulation tank; A droplet elimination component is sleeved on the outlet end of the foam elimination component. The droplet elimination component is used to collect the droplets generated after the foam elimination component performs defoaming operation, so that the droplets enter the circulation tank. The foam elimination component includes: A foam suction device, the first end of which is placed in the foam layer on the surface of the liquid in the circulation tank for sucking up foam; A foam inlet, one end of which is connected to the second end of the foam inhaler, and the other end of which is connected to the mist elimination assembly; One end of the foam inlet is provided with a hole, which is located on the side wall of the foam inlet along its length and is close to the end of the foam inlet that is connected to the foam suction component. The length of the foam inlet is 300 mm, and the diameter of the foam inlet is greater than or equal to 15 mm and less than or equal to 20 mm. The circulating tank defoaming system also includes: A pressure regulating component is inserted into the gas flow channel formed by the foam inlet component through a preset hole, and the pressure regulating component is used to input gas at a preset pressure. The distance between the outlet end of the pressure regulator extending into the gas flow channel and the smaller side wall of the foam inlet away from the circulation tank is less than or equal to one-third of the diameter of the foam inlet. The fog elimination component includes: A liquid collecting and venting device, wherein a first preset number of venting holes are provided on the side surface of the liquid collecting and venting device; A droplet collector is sleeved on the outside of the liquid collection and exhaust device. The droplet collector and the liquid collection and exhaust device form a return cavity, which is used to return the droplets discharged from the exhaust hole. The foam inlet is used to guide the foam sucked up by the foam inlet into the mist elimination component; The bending angle between the foam inhaler and the foam inlet is less than or equal to 90 degrees.

2. The circulating tank defoaming system as described in claim 1, characterized in that, The foam inhaler has a funnel-shaped first end within a predetermined length range, and the cross-sectional area of ​​the first end is larger than the cross-sectional area of ​​the other ends.

3. The circulating tank defoaming system as described in claim 1, characterized in that, The droplet collector has a second preset number of drain holes on its side surface corresponding to the circulation tank. The drain holes are used to discharge droplets, and the first preset number is greater than the second preset number.

4. A method for controlling defoaming in a circulating tank, used to control any one of the circulating tank defoaming systems as described in claims 1-3, characterized in that, include: Obtain the volume of foam to be eliminated in the circulation tank; The gas pressure flowing into the foam elimination component is controlled based on the volume of the foam to be eliminated.

5. The defoaming control method for a circulating tank as described in claim 4, characterized in that, Also includes: Obtain the foam flow rate; The gas pressure is controlled based on the foam flow rate and the volume of foam to be eliminated.

6. A defoaming control device for a circulating tank, used to control a defoaming system for a circulating tank as described in any one of claims 1-3, characterized in that, include: The acquisition unit is used to acquire the volume of foam to be eliminated in the circulation tank; A control unit is used to control the gas pressure flowing into the foam elimination component based on the volume of the foam to be eliminated.

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