CN116425247A - Defoaming spraying method and defoaming spraying device for bamboo fiber recovery liquid - Google Patents
Defoaming spraying method and defoaming spraying device for bamboo fiber recovery liquid Download PDFInfo
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- CN116425247A CN116425247A CN202310460818.0A CN202310460818A CN116425247A CN 116425247 A CN116425247 A CN 116425247A CN 202310460818 A CN202310460818 A CN 202310460818A CN 116425247 A CN116425247 A CN 116425247A
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- 238000005507 spraying Methods 0.000 title claims abstract description 85
- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 25
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 25
- 241001330002 Bambuseae Species 0.000 title claims abstract description 25
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 25
- 239000011425 bamboo Substances 0.000 title claims abstract description 25
- 239000000835 fiber Substances 0.000 title claims abstract description 24
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000007921 spray Substances 0.000 claims abstract description 81
- 239000012530 fluid Substances 0.000 claims abstract description 50
- 230000000630 rising effect Effects 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000004075 alteration Effects 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 10
- 239000010865 sewage Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/12—Prevention of foaming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model relates to the technical field of papermaking technology, in particular to a defoaming spraying method and a defoaming spraying device for bamboo fiber recovery liquid, wherein the defoaming spraying method comprises the following steps: detecting the real-time rising rate of a foam layer in the water tank, and comparing the real-time rising rate of the foam layer with a preset rising rate; detecting the real-time coverage rate of the foam layer covering the water surface of the pool, and comparing the real-time coverage rate of the foam layer with a preset coverage rate; and if the real-time rising rate is larger than the preset rising rate and the real-time coverage rate is larger than the preset coverage rate, reducing the flow path length of the spraying fluid of the spraying device. According to the technical scheme, by combining two different detection conditions, the actual foam quantity of the water tank can be accurately judged, the spraying water consumption is optimized, and the energy consumption is reduced; meanwhile, the water outlet speed of the rotary spray head is improved by reducing the path of the spray fluid, so that the defoaming efficiency is improved, the power of a booster pump is not required to be improved, and the spray can be more energy-saving.
Description
Technical Field
The utility model relates to the technical field of papermaking processes, in particular to a defoaming spraying method and a defoaming spraying device for bamboo fiber recovery liquid.
Background
In the preparation process of the bamboo fiber for papermaking, a large amount of foam can be generated in the process of adding liquid alkali for softening and the process of steaming, if the foam is not treated, the accuracy of liquid level display of a water tank can be affected, and the foam can overflow to the outside of the tank to cause sanitary pollution.
The existing foam treatment is to add an antifoaming agent into the system. Chinese patent CN204569471U provides a spray defoaming system for sewage treatment, including the reaction tank, spray defoaming device and be used for controlling the controller that sprays defoaming device worked, the reaction tank is equipped with the infrared detection subassembly that is used for detecting the foam height in the reaction tank, and infrared detection subassembly includes infrared emitter and infrared receiver, and infrared emitter and infrared receiver divide to locate the upper end opening both sides of reaction tank, and infrared receiver links to each other with the controller. The utility model has the advantages of convenient use, stable and reliable work, reduced labor intensity, saved production cost, etc. In the scheme, the upper end of the reaction tank is provided with a spray nozzle, and defoaming liquid is sprayed through the spray nozzle, so that foam on the surface of the water tank is eliminated. However, the scheme does not adopt any spraying energy-saving measures, and under the unattended condition, the spraying nozzle continuously works, so that resource waste is caused.
Chinese patent CN216909257U provides a defoaming agent spray system for accelerating defoaming sewage treatment, comprising a sewage treatment tank, a surface spray mechanism, an internal spray mechanism and a stirring assembly. The surface spray head of the surface spray mechanism is positioned below the top cover of the sewage treatment tank, and an exhaust port is arranged above the tank body of the sewage treatment tank. The internal spray mechanism comprises a defoaming injection pump, an air pump, a vertical injection pipe and at least one transverse injection pipe. The vertical injection pipe comprises a liquid inlet, an air inlet and at least one liquid outlet, and the liquid outlet is positioned below the sewage liquid level. The defoaming injection pump is communicated with the liquid inlet of the vertical injection pipe, and the air pump is communicated with the air inlet. The liquid outlet is located vertical injection pipe side, and liquid outlet quantity is unanimous with horizontal injection pipe quantity to both intercommunication settings. The stirring mechanism comprises a stirring motor, the stirring motor is fixedly arranged above the top cover, a stirring shaft of the stirring motor downwards penetrates through the top cover, and at least one group of stirring blades are fixedly arranged on the side part of the stirring motor. The utility model reduces the defoaming time in the sewage treatment process and improves the defoaming efficiency. In the scheme, the surface spray head is turned on by the rotary motor, so that the defoaming agent is uniformly dispersed to all corners of the surface of the sewage treatment tank, and spray defoaming is performed on the surface of the sewage. Likewise, the scheme does not take any spraying energy-saving measures, except for manual control of a switch, when the foam of the water tank is eliminated, the spray header can continuously work, so that resources are wasted.
Therefore, the existing defoaming system adopts a spraying mode to realize defoaming, but the spraying mode does not adopt energy-saving measures, and under the unattended condition, the spray header continuously works, so that resource waste is caused.
Disclosure of Invention
The utility model aims to provide a defoaming spraying method and a defoaming spraying device for bamboo fiber recovery liquid, and aims to solve the technical problem that the existing defoaming system lacks of adopting spraying energy-saving measures, and resources are wasted due to continuous spraying of a spraying nozzle.
In order to achieve the above purpose, the utility model provides a defoaming and spraying method of a bamboo fiber recovery liquid, which comprises the following steps:
detecting the real-time rising rate of a foam layer in the water tank, and comparing the real-time rising rate of the foam layer with a preset rising rate;
detecting the real-time coverage rate of the foam layer covering the water surface of the pool, and comparing the real-time coverage rate of the foam layer with a preset coverage rate;
if the real-time rising rate is larger than the preset rising rate and the real-time coverage rate is larger than the preset coverage rate, the flow path length of the spraying fluid of the spraying device is reduced, and the spraying of the spraying fluid on the foam layer through the rotary nozzle of the spraying device is accelerated.
As a further improvement of the utility model: the step of detecting the real-time coverage rate of the foam layer covering the water surface of the pool comprises the following steps:
acquiring the foam area in the plane of the target area through the chromatic aberration of the visual image;
and comparing the foam area with the surface area of a preset pool to obtain the real-time coverage rate of the foam layer.
As a further improvement of the utility model: the step of comparing the real-time coverage rate and the preset coverage rate of the foam layer comprises the following steps:
uniformly dividing a plurality of circular rings with the same ring width along the circumferential direction of the water tank by taking the surface of the water tank as a reference plane and the center of the water tank as an origin, and calibrating a coverage value corresponding to each circular ring;
detecting whether foam exists in each circular ring, if so, giving corresponding coverage values and summing to obtain real-time coverage rate;
and comparing the real-time coverage rate with a preset coverage rate.
As a further improvement of the utility model: the step of reducing the flow path length of the spray fluid of the spray device comprises:
and opening the parallel valve assembly to enable the first defoaming pipeline, the second defoaming pipeline and the third defoaming pipeline of the spraying device to form parallel pipelines.
As a further improvement of the utility model: the method also comprises the following steps:
the spray fluid is caused to flow in the first defoaming pipe, the second defoaming pipe, and the third defoaming pipe in a continuously alternating manner of low speed and high pressure and high speed and low pressure.
As a further improvement of the utility model: the method also comprises the following steps:
the thickness of the foam layer is not reduced after a certain period of time, a valve of the defoaming agent pipeline is opened, and the defoaming agent pipeline is communicated with a rotary spray head of the spraying device.
As a further improvement of the utility model: the method also comprises the following steps:
the flow path length of the spray fluid of the spray device is increased, and the water outlet speed of the spray fluid passing through the spray device is reduced.
In order to achieve the above purpose, the utility model also provides a defoaming and spraying device for the bamboo fiber recovery liquid, which comprises:
a detection assembly;
rotating the spray head;
one end of the defoaming pipeline is connected with the water tank, and the other end of the defoaming pipeline is connected with the rotary spray head;
and the parallel valve assembly is connected in the defoaming pipeline and is used for enabling the defoaming pipeline to form a parallel pipeline by opening a valve.
As a further improvement of the utility model: the defoaming pipeline comprises a first defoaming pipeline, a second defoaming pipeline and a third defoaming pipeline; the first defoaming pipeline, the second defoaming pipeline and the third defoaming pipeline are respectively provided with a plurality of defoaming cylinders which are connected in sequence, and the diameter of one end of each defoaming cylinder is firstly reduced and then increased along the axial direction.
As a further improvement of the utility model: the parallel valve assembly comprises a first valve, a second valve, a third valve and a fourth valve, wherein a water inlet pipe and a water outlet pipe are respectively arranged at two ends of the defoaming pipeline, the water inlet pipe is connected with the second defoaming pipeline through the first valve, the water inlet pipe is connected with the third defoaming pipeline through the second valve, the water outlet pipe is connected with the first defoaming pipeline through the third valve, and the water outlet pipe is connected with the second defoaming pipeline through the fourth valve.
As a further improvement of the utility model: the defoaming device further comprises a heating assembly, and the heating assembly is connected with the defoaming pipeline.
As a further improvement of the utility model: the detection component comprises an infrared sensor and an image detector.
Compared with the prior art, the utility model has the following beneficial effects:
according to the technical scheme, the real-time rising rate and the preset rising rate of the foam layer in the water tank are compared, and meanwhile, the real-time coverage rate and the preset coverage rate of the foam layer are compared, and the actual foam amount of the water tank can be judged more accurately by combining two different detection conditions, so that the spraying water consumption is optimized, and the energy consumption is reduced; meanwhile, the water outlet speed of the rotary spray head is improved by reducing the path of the spray fluid, so that the defoaming efficiency is improved, and compared with the existing mode of increasing the power of the booster pump, the scheme does not need to improve the power of the booster pump, and can enable spraying to be more energy-saving.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a defoaming spray apparatus of the present application;
FIG. 2 is a schematic diagram of the tandem operation of one embodiment of the defoaming pipeline of the present application;
FIG. 3 is a schematic diagram of parallel operation of one embodiment of the defoaming pipeline of the present application;
FIG. 4 is a schematic representation of the calculation of an embodiment of the real-time coverage of a foam layer of the present application.
Reference numerals illustrate:
1-pond, 2-rotatory nozzle, 11-inlet tube, 12-outlet pipe, 21-first valve, 22-second valve, 23-third valve, 24-fourth valve, 31-first connecting pipe, 32-second connecting pipe, 41-first defoaming pipeline, 42-second defoaming pipeline, 43-third defoaming pipeline, 44-defoaming section of thick bamboo.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The existing defoaming system adopts a spraying mode to realize defoaming, but the spraying mode does not adopt energy-saving measures, and under the unattended condition, the spray header continuously works, so that resource waste is caused.
The utility model aims to provide a defoaming spraying method and a defoaming spraying device for bamboo fiber recovery liquid, and aims to solve the technical problem that the existing defoaming system lacks energy-saving measures for a spraying mode, and resource waste is caused by continuous spraying of a spraying nozzle.
Referring to fig. 1-4, in an embodiment of a defoaming spraying device for a bamboo fiber recovery liquid according to the present disclosure, the defoaming spraying device includes:
a detection assembly;
a rotary shower head 2;
one end of the defoaming pipeline is connected into the water tank, and the other end of the defoaming pipeline is connected with the rotary spray head 2;
and the parallel valve assembly is connected in the defoaming pipeline and is used for enabling the defoaming pipeline to form a parallel pipeline by opening a valve.
Specifically, in this embodiment, the detection component is configured to detect a real-time rising rate of a foam layer in the pool, and compare the real-time rising rate of the foam layer with a preset rising rate; detecting the real-time coverage rate of the foam layer covering the water surface of the pool, and comparing the real-time coverage rate of the foam layer with a preset coverage rate; if the real-time rising rate is greater than the preset rising rate, and the real-time coverage rate is greater than the preset coverage rate, the parallel valve assembly is opened to enable the defoaming pipeline to form a parallel pipeline, the spraying fluid flows through multiple channels, the flowing path length of the spraying fluid is reduced, and the spraying fluid is accelerated to be sprayed onto a foam layer through the rotary spray head 2 of the spraying device.
According to the technical scheme, the real-time rising rate and the preset rising rate of the foam layer in the water tank are compared, and meanwhile, the real-time coverage rate and the preset coverage rate of the foam layer are compared, and the actual foam amount of the water tank can be judged more accurately by combining two different detection conditions, so that the spraying water consumption is optimized, and the energy consumption is reduced; meanwhile, the water outlet speed of the rotary spray head is improved by reducing the path of the spray fluid, so that the defoaming efficiency is improved, and compared with the existing mode of increasing the power of the booster pump, the scheme does not need to improve the power of the booster pump, and can enable spraying to be more energy-saving.
Further, in a certain embodiment, the defoaming pipeline comprises a first defoaming pipeline 41, a second defoaming pipeline 42 and a third defoaming pipeline 43; the first defoaming pipe 41, the second defoaming pipe 42 and the third defoaming pipe 43 are respectively provided with a plurality of sequentially connected defoaming cylinders 44, and the diameter of one end of each defoaming cylinder 44 is firstly reduced and then increased along the axial direction;
the parallel valve assembly comprises a first valve 21, a second valve 22, a third valve 23 and a fourth valve 24, wherein two ends of the defoaming pipeline are respectively provided with a water inlet pipe 11 and a water outlet pipe 12, the water inlet pipe 11 is connected with the second defoaming pipeline 42 through the first valve 21, the water inlet pipe 11 is connected with the third defoaming pipeline 43 through the second valve 22, the water inlet pipe 11 is connected with one end of the first defoaming pipeline 41, and one end of the second defoaming pipeline 42 is communicated with one end of the third defoaming pipeline 43 through a first connecting pipe 31;
the water outlet pipe 12 is connected with the first defoaming pipeline 41 through the third valve 23, the water outlet pipe 12 is connected with the second defoaming pipeline 42 through the fourth valve 24, and one end of the first defoaming pipeline 41 is communicated with one end of the second defoaming pipeline 42 through the second connecting pipe 32.
Specifically, referring to fig. 1 to 3, in the present embodiment, a water inlet pipe 11 is provided in a side wall of the water tank, and a water inlet of the water inlet pipe 11 is used for sucking the water in the water tank 1. The first defoaming pipeline 41, the second defoaming pipeline 42 and the third defoaming pipeline 43 of the defoaming pipeline are arranged in parallel, the head ends of the first defoaming pipeline 41, the second defoaming pipeline 42 and the third defoaming pipeline 43 are communicated with the water inlet pipe 11, the first valve 21 is arranged between the second defoaming pipeline 42 and the water inlet pipe 11, and the second valve 22 is arranged between the head end of the third defoaming pipeline 43 and the water inlet pipe 11. The tail ends of the first defoaming pipeline 41, the second defoaming pipeline 42 and the third defoaming pipeline 43 are communicated with the water outlet pipe 12, a third valve 23 is arranged between the first defoaming pipeline 41 and the water outlet pipe 12, and a fourth valve 24 is arranged between the tail end of the second defoaming pipeline 42 and the water outlet pipe 12. Under the condition that the foam of the water tank is not much, the power of a booster pump of the spraying device is constant, at the moment, the defoaming pipeline works in a form of a series pipeline, and spraying fluid passes through the water inlet pipe 11, the first defoaming pipeline 41, the second defoaming pipeline 42, the third defoaming pipeline 43 and the water outlet pipe 12 and is sprayed to the surface of the water tank through the rotary spray head 2, so that the defoaming effect is realized; when the pond foam is more under the condition, the power of spray set's booster pump is unchangeable, and the first valve 21 of parallel valve subassembly, second valve 22 are opened this moment, and third valve 23, fourth valve 24 are closed, and the defoaming pipeline is worked with the form of parallelly connected pipeline, sprays the fluid and passes through first defoaming pipeline 41, second defoaming pipeline 42, third defoaming pipeline 43 simultaneously, and the route that sprays the fluid's flow is shorter, and it is faster at rotatory nozzle spun water velocity to spray the fluid, more is favorable to eliminating the foam to defoaming efficiency has been improved.
In addition, the first defoaming pipe 41, the second defoaming pipe 42, and the third defoaming pipe 43 are each provided with a plurality of sequentially connected defoaming cylinders 44, and the diameter of one end of each defoaming cylinder 44 is reduced and then increased in the axial direction. The two ends of the defoaming cylinder 44 are symmetrically arranged, and the capacity of the two ends of the defoaming cylinder 44 is larger than that of the middle part. Before entering the de-foaming cartridge 44, the spray fluid flows at a relatively low velocity and high pressure. As the spray fluid enters the constricted diameter region of the de-bubbling cartridge 44, the spray fluid flow rate increases and the pressure decreases; subsequently, the spray fluid rapidly flows into the expanded region of increased diameter of the de-foaming cartridge 44, the spray fluid flow rate decreases, and the pressure increases. During this rapid pressure change, the bubbles within the spray fluid can be encouraged to collapse more rapidly, thereby achieving a defoaming effect.
Further, in one embodiment, in order to make the spray fluid form a high pressure and high temperature state, so as to be beneficial to puncturing bubbles, the defoaming spray device further comprises a heating assembly, wherein the heating assembly is connected with the defoaming pipeline, and the heating assembly can heat the first defoaming pipeline 41, the second defoaming pipeline 42 and the third defoaming pipeline 43, so that the spray fluid flowing through the defoaming pipeline is heated and heated, and the high pressure and high temperature state is formed.
Further, in one embodiment, the detection assembly includes an infrared sensor disposed on a side wall of the pool and an image detector disposed on a top of the pool. The infrared sensor is used for detecting the height of the foam layer; the image detector is used for acquiring the foam area of the surface of the pool through the chromatic aberration of the visual image.
Further, in one embodiment, to eliminate the foam layer rising not being caused by the rise of the water tank liquid level, the defoaming spraying device further comprises a weighing device, wherein the weighing device is arranged at the bottom of the water tank and is used for weighing the weight of the water tank.
The utility model also provides a defoaming and spraying method of the bamboo fiber recovery liquid, which is realized based on the defoaming and spraying device of the embodiment, and in one embodiment of the defoaming and spraying method, the method comprises the following steps:
s100: detecting the real-time rising rate of a foam layer in the water tank, and comparing the real-time rising rate of the foam layer with a preset rising rate;
s200: detecting the real-time coverage rate of the foam layer covering the water surface of the pool, and comparing the real-time coverage rate of the foam layer with a preset coverage rate;
s300: if the real-time rising rate is larger than the preset rising rate and the real-time coverage rate is larger than the preset coverage rate, the flow path length of the spraying fluid of the spraying device is reduced, and the spraying of the spraying fluid on the foam layer through the rotary nozzle of the spraying device is accelerated.
Specifically, the foam layer of the water tank does not have to overflow when rising quickly, the rising area of the foam layer does not have to be around the water tank, and the accumulation of the foam layer in the middle area of the water tank is possibly serious, but the accumulation of the foam layer in the middle area does not cause overflow. Therefore, in order to optimize monitoring, the scheme is also provided with a means for detecting the foam area on the surface of the water tank, and by comparing the real-time coverage rate and the preset coverage rate of the foam layer and combining two different detection conditions, the actual foam amount of the water tank can be accurately judged, the spraying water consumption is optimized, and the energy consumption is reduced.
Further, in other embodiments, step S200: the step of detecting the real-time coverage rate of the foam layer covering the water surface of the pool comprises the following steps:
acquiring the foam area in the plane of the target area through the chromatic aberration of the visual image;
and comparing the foam area with the surface area of a preset pool to obtain the real-time coverage rate of the foam layer.
In particular, in the present embodiment, since there is a color difference between the color of the foam and the water body of the pool, the foam distribution can be obtained by the color difference of the visual image. In visual image detection, the foam is larger in occupied area, representing a wider foam coverage area.
Further, in other embodiments, step S200: the step of comparing the real-time coverage rate and the preset coverage rate of the foam layer comprises the following steps:
uniformly dividing a plurality of circular rings with the same ring width along the circumferential direction of the water tank by taking the surface of the water tank as a reference plane and the center of the water tank as an origin, and calibrating a coverage value corresponding to each circular ring;
detecting whether each circular ring has foam, if so, giving corresponding coverage value and summing to obtain real-time coverage rate,
and comparing the real-time coverage rate with a preset coverage rate.
Specifically, in this embodiment, if foam accumulation occurs seriously in the middle area of the pool, the accumulation in this area does not cause overflow, and foam at the edge of the pool is easy to overflow, so that foam at the edge is treated preferentially. Based on that the foam is generally gathered in the form of circle aggregation, the area of foam distribution is divided by weight, for example, as shown in fig. 4, if the foam area in the central circle exceeds 50% of the area of the central circle, a 1-minute coverage value is given; when the foam area in the first circular ring extending outwards from the central circle exceeds 50% of the area of the first circular ring, giving a 3-point coverage value; when the foam area in the second ring extending outwards from the first ring exceeds 50% of the area of the second ring, giving a 5-minute coverage value; when the foam area in the third ring, where the second ring extends outward, exceeds 50% of the area of the third ring, an 8-point coverage value is assigned. The sum of coverage values at a certain moment is equal to the real-time coverage rate, if the preset coverage rate is 8, the real-time coverage rate is more than or equal to 8, the condition is judged to be met, and the system switches the defoaming pipeline to the parallel pipeline, so that the flow path length of the spraying fluid is reduced.
Further, in other embodiments, step S300: the step of reducing the flow path length of the spray fluid of the spray device comprises:
and opening the parallel valve assembly to enable the first defoaming pipeline, the second defoaming pipeline and the third defoaming pipeline of the spraying device to form parallel pipelines.
Specifically, in this embodiment, when the foam of the pool is not much, the pressure of the booster pump of the spraying device is constant, and at this time, the defoaming pipeline works in a form of a serial pipeline, and the spraying fluid passes through the water inlet pipe 11, the first defoaming pipeline 41, the second defoaming pipeline 42, the third defoaming pipeline 43 and the water outlet pipe 12, and is sprayed to the surface of the pool through the rotary sprayer 2, so as to achieve the defoaming effect; when the pond foam is more under the condition, the booster pump of spray set's pressure is invariable, and the first valve 21 of parallel valve subassembly, second valve 22 are opened this moment, and third valve 23, fourth valve 24 are closed, and the defoaming pipeline is worked with the form of parallelly connected pipeline, sprays the fluid and passes through first defoaming pipeline 41, second defoaming pipeline 42, third defoaming pipeline 43 simultaneously, and the route that sprays the fluid's flow is shorter, and it is faster at rotatory nozzle spun water velocity to spray the fluid, more is favorable to eliminating the bubble to defoaming efficiency has been improved.
Further, in other embodiments, the defoaming spraying method further includes the steps of:
the spray fluid is caused to flow in the first defoaming pipe, the second defoaming pipe, and the third defoaming pipe in a continuously alternating manner of low speed and high pressure and high speed and low pressure.
Specifically, in the present embodiment, the first defoaming pipe 41, the second defoaming pipe 42, and the third defoaming pipe 43 are each provided with a plurality of sequentially connected defoaming cylinders 44, and the diameter of one end of the defoaming cylinder 44 decreases and then increases in the axial direction. The two ends of the defoaming cylinder 44 are symmetrically arranged, and the capacity of the two ends of the defoaming cylinder 44 is larger than that of the middle part. Before entering the middle region of the de-bubbling cartridge 44, the spray fluid flows at a relatively low velocity and high pressure. As the spray fluid enters the constricted diameter region of the de-bubbling cartridge 44, the spray fluid flow rate increases and the pressure decreases; subsequently, the spray fluid rapidly flows into the expanded region of increased diameter of the de-foaming cartridge 44, the spray fluid flow rate decreases, and the pressure increases. During this rapid pressure change, the bubbles within the spray fluid can be encouraged to collapse more rapidly, thereby achieving a defoaming effect.
Further, in other embodiments, the defoaming spraying method of the bamboo fiber recovery liquid further includes the following steps:
s400: the thickness of the foam layer is not reduced after a certain period of time, a valve of the defoaming agent pipeline is opened, and the defoaming agent pipeline is communicated with a rotary spray head of the spraying device.
Specifically, in this embodiment, when the pool foam is excessive, and the working load of the defoaming pipeline has been exceeded, the thickness of the foam layer is detected to be not reduced after a certain period of time, and at this time, the valve of the defoaming agent pipeline is opened, so that the defoaming agent enters the defoaming pipeline and is sprayed out from the rotary nozzle.
Further, in other embodiments, the defoaming spraying method of the bamboo fiber recovery liquid further includes the following steps:
s500: the flow path length of the spray fluid of the spray device is increased, and the water outlet speed of the spray fluid passing through the spray device is reduced.
Specifically, in the present embodiment, when the thickness of the detected foam layer is reduced and the real-time coverage rate of the foam is lower than the preset coverage rate, the defoaming pipeline is restored to the serial pipeline, the flow path length of the spray fluid is increased, and the water outlet speed of the fluid sprayed from the rotary nozzle is reduced.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (12)
1. The defoaming and spraying method of the bamboo fiber recovery liquid is characterized by comprising the following steps of:
detecting the real-time rising rate of a foam layer in the water tank, and comparing the real-time rising rate of the foam layer with a preset rising rate;
detecting the real-time coverage rate of the foam layer covering the water surface of the pool, and comparing the real-time coverage rate of the foam layer with a preset coverage rate;
if the real-time rising rate is larger than the preset rising rate and the real-time coverage rate is larger than the preset coverage rate, the flow path length of the spraying fluid of the spraying device is reduced, and the spraying of the spraying fluid on the foam layer through the rotary nozzle of the spraying device is accelerated.
2. The defoaming and spraying method of the bamboo fiber recovery liquid according to claim 1, wherein the step of detecting the real-time coverage rate of the foam layer covering the water surface of the pool comprises:
acquiring the foam area in the plane of the target area through the chromatic aberration of the visual image;
and comparing the foam area with the surface area of a preset pool to obtain the real-time coverage rate of the foam layer.
3. The defoaming and spraying method of the bamboo fiber recovery liquid according to claim 1, wherein the step of comparing the real-time coverage rate of the foam layer with the preset coverage rate comprises:
uniformly dividing a plurality of circular rings with the same ring width along the circumferential direction of the water tank by taking the surface of the water tank as a reference plane and the center of the water tank as an origin, and calibrating a coverage value corresponding to each circular ring;
detecting whether foam exists in each circular ring, if so, giving corresponding coverage values and summing to obtain real-time coverage rate;
and comparing the real-time coverage rate with a preset coverage rate.
4. The defoaming spraying method of the bamboo fiber recovery liquid according to claim 1, wherein the step of reducing the flow path length of the spray fluid of the spraying device comprises:
and opening the parallel valve assembly to enable the first defoaming pipeline, the second defoaming pipeline and the third defoaming pipeline of the spraying device to form parallel pipelines.
5. The defoaming and spraying method of the bamboo fiber recovery liquid according to claim 4, further comprising the steps of:
the spray fluid is caused to flow in the first defoaming pipe, the second defoaming pipe, and the third defoaming pipe in a continuously alternating manner of low speed and high pressure and high speed and low pressure.
6. The defoaming and spraying method of the bamboo fiber recovery liquid according to claim 1, further comprising the steps of:
the thickness of the foam layer is not reduced after a certain period of time, a valve of the defoaming agent pipeline is opened, and the defoaming agent pipeline is communicated with a rotary spray head of the spraying device.
7. The defoaming and spraying method of the bamboo fiber recovery liquid according to claim 1, further comprising the steps of:
the flow path length of the spray fluid of the spray device is increased, and the water outlet speed of the spray fluid passing through the spray device is reduced.
8. Defoaming spray set of bamboo fibre recovery liquid, its characterized in that includes:
a detection assembly;
rotating the spray head;
one end of the defoaming pipeline is connected with the water tank, and the other end of the defoaming pipeline is connected with the rotary spray head;
and the parallel valve assembly is connected in the defoaming pipeline and is used for enabling the defoaming pipeline to form a parallel pipeline by opening a valve.
9. The defoaming spraying device of the bamboo fiber recovery liquid according to claim 8, wherein the defoaming pipeline comprises a first defoaming pipeline, a second defoaming pipeline and a third defoaming pipeline; the first defoaming pipeline, the second defoaming pipeline and the third defoaming pipeline are respectively provided with a plurality of defoaming cylinders which are connected in sequence, and the diameter of one end of each defoaming cylinder is firstly reduced and then increased along the axial direction.
10. The defoaming spraying device of the bamboo fiber recovery liquid according to claim 9, wherein the parallel valve assembly comprises a first valve, a second valve, a third valve and a fourth valve, wherein water inlet pipes and water outlet pipes are respectively arranged at two ends of the defoaming pipeline, the water inlet pipes are connected with the second defoaming pipeline through the first valve, the water inlet pipes are connected with the third defoaming pipeline through the second valve, the water outlet pipes are connected with the first defoaming pipeline through the third valve, and the water outlet pipes are connected with the second defoaming pipeline through the fourth valve.
11. The defoaming spray apparatus of claim 8, further comprising a heating assembly connected to the defoaming pipeline.
12. The defoaming spray apparatus for bamboo fiber recovery liquid according to claim 8, wherein the detection assembly comprises an infrared sensor, an image detector.
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| JP2000254408A (en) * | 1999-03-12 | 2000-09-19 | Sharp Corp | Treating liquid defoaming device, treating liquid defoaming method, treating liquid circulating device, and treating liquid circulating method |
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| CN116425247B (en) | 2024-03-15 |
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