CN108854611B - Micro-bubble water generating device and control method thereof - Google Patents
Micro-bubble water generating device and control method thereof Download PDFInfo
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- CN108854611B CN108854611B CN201710325607.0A CN201710325607A CN108854611B CN 108854611 B CN108854611 B CN 108854611B CN 201710325607 A CN201710325607 A CN 201710325607A CN 108854611 B CN108854611 B CN 108854611B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2319—Methods of introducing gases into liquid media
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
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Abstract
The invention belongs to the technical field of micro-bubble water generating equipment, and discloses a micro-bubble water generating device which comprises a closed gas-liquid mixer and a primary mixing device applying a Venturi effect, wherein when water enters the primary mixing device, gas is sucked into the primary mixing device by negative pressure generated by the primary mixing device, the water and the gas are preliminarily mixed by the primary mixing device and then are conveyed into the gas-liquid mixer, and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer again to form micro-bubble water, and the micro-bubble water can maintain a certain liquid level in the gas-liquid mixer and be continuously output. The invention also discloses a control method of the micro-bubble water generating device. Water and gas are conveyed into the gas-liquid mixer after being preliminarily mixed by the preliminary mixing device, and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer again to form micro-bubble water, so that the micro-bubble water generated by the mode has higher air fusion degree and better effect.
Description
Technical Field
The invention relates to the technical field of micro-bubble water generating equipment, in particular to a micro-bubble water generating device and a control method thereof.
Background
Microbubbles are microbubbles having a diameter of 50 μm or less. The micro-bubble water generation principle is mainly realized by a differential pressure mixing method. Under a certain pressure, a certain gas (such as air) is fully mixed with water to form a gas-water mixed solution, and then the pressure is released by expansion, so that the gas dissolved in the water is suddenly polymerized to form fine micro-bubbles to be milk-white. The process change is the mixing state of gas and water, and belongs to physical change. The water has strong decontamination function, is industrially used for treating production sewage, has certain effect on cultivation and improving ecological environment, and is generally used for washing and the like in daily life.
The existing micro-bubble water is usually generated by a micro-bubble water generating device, and the micro-bubble water generating device generally comprises three parts, namely a water path supercharging device, a gas path supplementing device and a gas-liquid mixer. They are connected by pipelines and special joints. The working principle is as follows: water and external air passing through the air path supplementing device enter the air-liquid mixer together through the water path supercharging device, and the water and the air are fully mixed and compressed under the high-pressure action of the air-liquid mixer. Finally, the generation of micro-bubble water can be realized through a specific water outlet valve. However, the existing micro-bubble water generating device has poor effect on generating micro-bubble water and cannot generate the micro-bubble water continuously.
In addition, most of the existing micro-bubble water generating devices utilize a pressure switch to detect the pressure in the gas-liquid mixer, namely when the pressure in the gas-liquid mixer reaches the working value of the pressure switch, the pressure switch is switched off, the device stops running, and no water or gas is supplemented into the gas-liquid mixer any more. And after the water in the gas-liquid mixer is discharged, the pressure in the gas-liquid mixer is lower than the working value of the pressure switch, and the device operates again. However, when the pressure of the gas-liquid mixer is too high, it cannot be detected whether the gas-liquid ratio in the gas-liquid mixer is within a reasonable value.
In addition, if there is a quality problem in the gas-liquid mixer, the pressure maintaining or pressure maintaining capability can not meet the requirement, and when there is a water leakage and air leakage phenomenon, the closing pressure value of the pressure switch can not be reached all the time, and at this time, the waterway supercharging device continuously works, which will result in the micro bubble water generating device water leakage and other consequences, and along with the increasing pressure of the gas-liquid mixer, the waterway supercharging device is easy to be damaged, and dangerous consequences can be caused.
Disclosure of Invention
The invention aims to provide a micro-bubble water generating device and a control method thereof, and aims to solve the problems that the conventional micro-bubble water generating device cannot realize reasonable gas-liquid ratio and cannot maintain pressure or cannot meet the requirement of pressure maintaining when a gas-liquid mixer has quality problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a little bubble water produces device, includes an inclosed gas-liquid mixer and uses the preliminary mixing device of venturi effect, when water gets into preliminary mixing device, the negative pressure that preliminary mixing device produced inhales preliminary mixing device with gas, water with gas is carried to the gas-liquid mixer in after preliminary mixing of preliminary mixing device to form little bubble water with the gas remixing that maintains certain pressure in the gas-liquid mixer, little bubble water can maintain certain liquid level and continuous output in the gas-liquid mixer.
As preferred, still including all connecting in preliminary mixing arrangement's water pump and air supply, when the water that the water pump was carried gets into preliminary mixing arrangement, the negative pressure that preliminary mixing arrangement produced inhales preliminary mixing arrangement with the gas of air supply department in to by preliminary mixing arrangement preliminary mixing.
Preferably, the preliminary mixing device is an ejector or a venturi tube.
Preferably, a liquid level detection unit is arranged in the gas-liquid mixer, and the liquid level detection unit detects at least two liquid level detection points from high to low.
Preferably, the liquid level detection unit comprises a first detection probe and a second detection probe which are arranged in sequence from high to low;
or the liquid level detection unit comprises a first detection probe, a second detection probe and a third detection probe which are sequentially arranged from high to low.
Preferably, the two sides of the water pump are connected in parallel with third one-way valves opposite to the water inlet direction, and the opening pressure of the third one-way valves is greater than the pressure at the liquid level detection point corresponding to the second detection probe.
Preferably, one side of the water pump is provided with a first one-way valve which can be conducted along the water inlet direction, and one side of the air source is provided with a second one-way valve which can be conducted along the air inlet direction.
Preferably, a pressure relief valve is arranged at the upper end of the gas-liquid mixer.
The invention also provides a control method of the micro-bubble water generating device, water is fed into the preliminary mixing device, the gas is sucked into the preliminary mixing device by the negative pressure generated by the preliminary mixing device, the water and the gas are preliminarily mixed by the preliminary mixing device and then are conveyed into the gas-liquid mixer, and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer to form micro-bubble water, and the micro-bubble water can maintain a certain liquid level in the gas-liquid mixer and be continuously output.
Preferably, the method further comprises the following steps: detect the liquid level in the gas-liquid mixer through the liquid level detection unit, when the liquid level in the gas-liquid mixer is less than the second setting value, control water pump is intake in to preliminary mixing arrangement, and the negative pressure that preliminary mixing arrangement produced simultaneously inhales preliminary mixing arrangement with the gas of air supply department, water with in gas carries to the gas-liquid mixer after preliminary mixing arrangement preliminary mixing, until the liquid level in the gas-liquid mixer reaches the second setting value.
Preferably, when the water pump is started, recording the running time T of the water pump;
and when the liquid level in the gas-liquid mixer reaches a second set value, if the running time T is more than or equal to the set water inlet time T1, the water pump is closed.
Preferably, after the water pump is turned off, if the liquid level drops to or below the first set value, the water pump is controlled to feed water into the gas-liquid mixer.
Preferably, if the running time T is less than the set water inlet time T1, controlling the water pump to continuously feed water to the set water inlet time T1;
preferably, when the pressure in the gas-liquid mixer is higher than the opening pressure of the third check valve, the water output by the water pump flows to the inlet of the water pump through the third check valve.
Preferably, when the third one-way valve fails, if the liquid level in the gas-liquid mixer reaches a third set value, the water pump is closed;
preferably, when the liquid level detection unit fails to detect the third set value or the failure of the controller of the micro-bubble water generating device, if the pressure in the gas-liquid mixer reaches the pressure relief pressure value of the pressure relief valve, the pressure relief valve performs pressure relief.
According to the invention, the water and the gas are primarily mixed by the primary mixing device and then are conveyed into the gas-liquid mixer, and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer again to form the micro-bubble water, so that the micro-bubble water generated in such a way has higher air fusion degree and better effect. And the micro-bubble water can be continuously output at a certain liquid level in the gas-liquid mixer, and the requirement of continuously using the micro-bubble water by a user can be met.
The liquid level detection unit is provided with at least two liquid level detection points, pressure in the gas-liquid mixer can be judged according to liquid level height in the gas-liquid mixer, opening and closing control of the water pump is further performed, gas entering amount is controlled according to water entering amount through the primary mixing device, and gas-liquid ratio in the gas-liquid mixer is more reasonable. And when the gas-liquid mixer has quality problems, the water pump can be controlled in time, so that the continuous increase of the pressure in the gas-liquid mixer is avoided, and the use safety of the micro-bubble water generating device is influenced.
Through the third check valve that has in parallel with the water inlet direction opposite in water pump both sides, when the pressure in the gas-liquid mixer is greater than the cracking pressure of third check valve, the water that flows out after the water pump pressure boost can flow to the entry of water pump from the third check valve, and can not enter into in the gas-liquid mixer, can reduce the frequency of opening and close of water pump, just also can prolong the life of water pump.
Drawings
FIG. 1 is a schematic diagram of a micro-bubble water generating device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a micro-bubble water generating device according to an embodiment of the present invention.
In the figure:
1. a gas-liquid mixer; 2. a water inlet pipeline; 3. an air intake line; 4. a first check valve; 5. a water pump; 6. a gas source; 7. a second one-way valve; 8. a liquid level detection unit; 9. a third check valve; 10. an electrically controlled stop valve; 11. a pressure relief valve; 12. a water outlet valve; 13. a preliminary mixing device; 14. a pipe joint; 81. a first detection probe; 82. a second detection probe; 83. a third detection probe.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a micro-bubble water generating device, as shown in figure 1, the micro-bubble water generating device comprises a closed gas-liquid mixer 1, an inlet is arranged at the upper part of the gas-liquid mixer 1, a water outlet is arranged at the bottom of the gas-liquid mixer 1, a pipeline joint 14 is arranged at the inlet, and a water outlet valve 12 is connected at the water outlet.
The pipeline joint 14 is connected with a primary mixing device 13 applying the Venturi effect through a pipeline, when water enters the primary mixing device 13, the primary mixing device 13 can generate negative pressure, gas is sucked into the primary mixing device 13 through the negative pressure, the primary mixing device 13 primarily mixes the gas and the entering water, the primarily mixed water and the gas are conveyed into the gas-liquid mixer 1 through the pipeline joint 14 and the inlet, and are mixed with the gas maintaining certain pressure in the gas-liquid mixer 1 again to form micro-bubble water, and the micro-bubble water can maintain certain liquid level in the gas-liquid mixer and is continuously output through the water outlet and the water outlet valve 12.
In this embodiment, the preliminary mixing device 13 may be a jet ejector or a venturi tube, and it can be understood that other devices capable of adsorbing gas under negative pressure in the prior art and primarily mixing water and gas are also within the protection scope of this embodiment. An ejector is preferably used in this embodiment.
In this embodiment, the preliminary mixing device 13 is connected with the water inlet pipeline 2 and the air inlet pipeline 3 respectively, wherein:
the water inlet pipeline 2 is provided with a first one-way valve 4 and a water pump 5, and water is conveyed into the preliminary mixing device 13 through the water inlet pipeline 2 by the water pump 5. The first check valve 4 is configured to be conductive in the water inlet direction, and may be located on one side of the water pump 5, for example, on the left side of the illustrated water pump 5, or on the right side of the water pump 5, for preventing the water from flowing backwards. The water pump 5 is connected to a controller (not shown) of the microbubble water generating apparatus. In this embodiment, the water pump 5 may have a pressurizing function (e.g., a high-pressure water pump) so as to deliver water at a predetermined pressure, and the water pump 5 may be another device capable of delivering water at a predetermined pressure.
The air inlet pipeline 3 is provided with a second one-way valve 7, and the second one-way valve 7 can be conducted along the air inlet direction and is positioned between the air source 6 and the preliminary mixing device 13. In this embodiment, the air source 6 may be an air source, or may be another air source.
This embodiment is through setting up the import department at gas-liquid mixer 1 top with pipe joint 14, pass through pipe connection on pipe joint 14 with preliminary mixing arrangement 13 afterwards, when opening water pump 5, water through water pump 5 transport enters into preliminary mixing arrangement 13, preliminary mixing arrangement 13 can produce the negative pressure this moment, and adsorb the gas of air supply 6 department to it in through this negative pressure, and preliminary mixing with the water that water pump 5 carried, preliminary mixing arrangement 13 carries preliminary mixed water and gas to gas-liquid mixer 1 in afterwards, and form little bubble water with the gas remixing that maintains certain pressure in the gas-liquid mixer, the air of the little bubble water that this kind of mode generated fuses the degree higher, the effect is better. And the micro-bubble water can maintain a certain liquid level in the gas-liquid mixer 1 and is continuously output from the water outlet at the bottom of the gas-liquid mixer 1 and the water outlet at the bottom of the gas-liquid mixer 1, so that the requirement of continuously using the micro-bubble water by a user is met. Through the setting of above-mentioned preliminary mixing device 13, can not need gas conveying equipment, can realize gaseous absorption and with the preliminary mixing of water.
In this embodiment, a liquid level detection unit 8 is disposed in the gas-liquid mixer 1, and the liquid level detection unit 8 detects at least two liquid level detection points from high to low, and two liquid level detection points are detected in this embodiment. Specifically, the liquid level detection unit 8 includes a first detection probe 81 and a second detection probe 82, which are arranged from high to low, and the first detection probe 81 and the second detection probe 82 respectively correspond to two liquid level detection points for detecting whether the liquid in the gas-liquid mixer 1 reaches the liquid level detection points.
The water pump needs to be closed after the internal pressure of the existing gas-liquid mixer reaches a set value, and then the water outlet valve of the gas-liquid mixer is frequently opened in the use process, so that the water pump needs to be started when the internal pressure of the gas-liquid mixer is lower than the set value, and the frequent opening and closing of the water outlet valve in the use process can cause the frequent starting of the water pump, which can influence the service life of the water pump. And under the highly compressed condition in water route, start the water pump and can lead to its stifled commentaries on classics, cause the water pump motor to become hot, seriously influence the life of water pump.
For the above reasons, in the present embodiment, the third check valve 9 is connected in parallel to both sides of the water pump 5, and the opening pressure of the third check valve 9 is greater than the pressure at the liquid level detection point corresponding to the second detection probe 82. When the pressure in the gas-liquid mixer 1 is greater than the opening pressure of the third check valve 9, the third check valve 9 is conducted, and at this time, the water flowing out after being pressurized by the water pump 5 flows to the inlet of the water pump 5 from the third check valve 9 and continues to circulate by the water pump 5 without entering the gas-liquid mixer 1, so that the over-high pressure of the gas-liquid mixer 1 is avoided. And the third check valve 9 can reduce the opening and closing frequency of the water pump 5, and the service life of the water pump 5 can be prolonged.
In this embodiment, a pressure release valve 11 is further provided at the upper end of the gas-liquid mixer 1, when the first detection probe 81 of the liquid level detection unit 8 fails or the controller of the microbubble water generating device fails, the water pump 5 cannot be closed or cannot be closed at this time, and through the pressure release valve 11, if the pressure in the gas-liquid mixer 1 reaches the pressure release pressure value of the pressure release valve 11, the pressure can be released by the pressure release valve 11, so as to ensure the safety of the gas-liquid mixer 1.
In this embodiment, further, an electronic control stop valve 10 is disposed between the first check valve 4 and the water pump 5, the electronic control stop valve 10 is connected to the controller, when the micro bubble water outlet effect is not obvious or is not used for a long time, the water in the gas-liquid mixer 1 needs to be discharged, at this time, the water inlet pipeline 1 is disconnected through the electronic control stop valve 10, and then the water in the gas-liquid mixer 1 is discharged out of the water outlet valve 12 under the pressure in the gas-liquid mixer 1.
The invention also provides a control method of the micro-bubble water generating device, which comprises the following steps of controlling the water pump 5 to feed water into the primary mixing device 13, sucking the gas at the gas source 6 into the primary mixing device 13 by the negative pressure generated by the primary mixing device 13, preliminarily mixing the water and the gas by the primary mixing device 13, conveying the preliminarily mixed water and the gas into the gas-liquid mixer 1, mixing the preliminarily mixed water and the gas with the gas maintaining a certain pressure in the gas-liquid mixer 1 to form micro-bubble water, and continuously outputting the micro-bubble water at a certain liquid level in the gas-liquid mixer 1.
In this embodiment, further, the control method further includes: two detection probes through liquid level detection unit 8 detect the liquid level in the gas-liquid mixer 1, when the liquid level in the gas-liquid mixer 1 is less than the second set value that second detection probe 82 corresponds, second detection probe 82 feedback signal gives the controller, controller control water pump 5 starts to carry water to preliminary mixing device 13, meanwhile, the gas of 6 departments of air supply is through preliminary mixing device 13's negative pressure effect, be adsorbed in preliminary mixing device 13 and preliminary mixing with water, the water and the gas of mixing afterwards are carried to gas-liquid mixer 1 through preliminary mixing device 13 in, and form little bubble water with the gas phase mixture that maintains certain pressure in the gas-liquid mixer 1. When the water pump 5 is started, the controller starts to record the operation time T of the water pump 5.
Along with the continuous operation of the water pump 5, the water level in the gas-liquid mixer 1 rises and gradually rises to a second set value corresponding to the second detection probe 82, when the liquid level reaches the second set value corresponding to the second detection probe 82, the second detection probe 82 feeds back a signal to the controller, the controller judges whether the operation time T of the water pump 5 is greater than or equal to a set water inlet time T1, if the operation time T of the water pump 5 is greater than or equal to the set water inlet time T1, the pressure in the gas-liquid mixer 1 reaches the required pressure, at this time, the controller turns off the water pump 5, and the gas in the gas source 6 does not flow to the preliminary mixing device 13 along with the turning off of the water pump 5.
If the operation time T is less than the set water inlet time T1, although the liquid level reaches the second set value corresponding to the second detection probe 82, the pressure in the gas-liquid mixer 1 may not reach the required pressure, so the controller controls the water pump 5 to continue to feed water until the set water inlet time T1.
In the process that the water pump 5 continues to feed water until the set water feeding time T1, when the pressure in the gas-liquid mixer 1 is smaller than the opening pressure of the third check valve 9, the water pump 5 continues to feed water into the gas-liquid mixer 1. When the pressure in the gas-liquid mixer 1 is higher than the opening pressure of the third check valve 9, the water output by the water pump 5 flows to the inlet of the water pump 5 through the third check valve 9 and circularly flows, at this time, the water pump 5 does not feed water into the gas-liquid mixer 1, and the pressure in the gas-liquid mixer 1 is kept constant. The water output by the water pump 5 flows circularly, the opening and closing frequency of the water pump 5 can be reduced, and the service life of the water pump 5 can be prolonged.
In this embodiment, when the third check valve 9 fails, if the liquid level in the gas-liquid mixer 1 reaches a third set value corresponding to the first detection probe 81, the first detection probe 81 feeds back a signal to the controller, the controller turns off the water pump 5, and sends an alarm through the display or the buzzer, so as to prompt a user that the pressure in the gas-liquid mixer 1 is too high, and drainage needs to be performed in time, so as to prevent the pressure in the gas-liquid mixer 1 from being too high and affecting the safety performance of the gas-liquid mixer 1.
Further, when the liquid level detection unit 8 fails and cannot detect the third set value or the failure of the controller of the micro-bubble water generation device, the continuous water inlet of the water pump 5 exists, the pressure in the gas-liquid mixer 1 is increased, and when the pressure in the gas-liquid mixer 1 reaches the pressure relief pressure value of the pressure relief valve 11, the pressure can be relieved through the pressure relief valve 11, so that the pressure in the gas-liquid mixer 1 does not rise any more, and the safe use is prevented from being influenced by the overhigh pressure in the gas-liquid mixer 1.
Example two
The present embodiment provides a micro-bubble water generating device, which is different from the first embodiment in that: the liquid level detection unit 8 of this embodiment includes a first detection probe 81, a second detection probe 82, and a third detection probe 83, which are sequentially arranged from high to low, as shown in fig. 2, and the three detection probes respectively correspond to three liquid level detection points for detecting whether the liquid in the gas-liquid mixer 1 reaches the liquid level detection points.
Through above-mentioned third test probe 83, reach the position of second test probe 82 at the liquid level, and operating time T more than or equal to sets for into water time T1, after having closed water pump 5, when the user uses little bubble water, the liquid level can fall when third test probe 83 and second test probe 82 between this moment, water pump 5 can not start this moment, when the liquid level falls to the position of third test probe 83 and below, control water pump 5 is intake to preliminary mixing arrangement 13 in, and adsorb through preliminary mixing arrangement 13 negative pressure, it enters gas-liquid mixer 1 after preliminary mixing arrangement 13, repeat above-mentioned process and reach the position of second test probe 82 to the liquid level.
The present embodiment further provides a control method of the micro-bubble water generating device, which is different from the first embodiment only in that:
this embodiment reaches the second setting value that second detecting probe 82 corresponds at the liquid level, and operating time T more than or equal to sets for into water time T1, after having closed water pump 5, when the user used little bubble water, the liquid level can drop between third detecting probe 83 and the second detecting probe 82, water pump 5 can not start this moment, when the liquid level dropped to the first setting value that third detecting probe 83 corresponds and below, control water pump 5 and intake to preliminary mixing device 13, and adsorb through preliminary mixing device 13 negative pressure, get into gas-liquid mixer 1 after preliminary mixing device 13 preliminary mixing, repeat above-mentioned process and reach the second setting value that second detecting probe 82 corresponds to the liquid level.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (11)
1. The micro bubble water generating device is characterized by comprising a closed gas-liquid mixer (1) and a primary mixing device (13) applying a Venturi effect, when water enters the primary mixing device (13), negative pressure generated by the primary mixing device (13) sucks gas into the primary mixing device (13), the water and the gas are preliminarily mixed by the primary mixing device (13) and then conveyed into the gas-liquid mixer (1) and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer (1) again to form micro bubble water, and the micro bubble water can maintain a certain liquid level in the gas-liquid mixer (1) and is continuously output;
the device is characterized by further comprising a water pump (5) and an air source (6) which are both connected to the preliminary mixing device (13), when water conveyed by the water pump (5) enters the preliminary mixing device (13), the negative pressure generated by the preliminary mixing device (13) sucks the air at the air source (6) into the preliminary mixing device (13) and is preliminarily mixed by the preliminary mixing device (13), and the preliminary mixing device (13) is a jet ejector or a Venturi tube;
a liquid level detection unit (8) is arranged in the gas-liquid mixer (1), and the liquid level detection unit (8) comprises a first detection probe (81) and a second detection probe (82) which are sequentially arranged from high to low;
when the water pump is started, recording the running time T of the water pump, and when the liquid level of the gas-liquid mixer (1) reaches a second set value corresponding to the second detection probe (82), if the running time T is less than the set water inlet time T1, the pressure in the gas-liquid mixer (1) does not reach the required pressure, and controlling the water pump to continuously feed water to the set water inlet time T1; when the liquid level of the gas-liquid mixer (1) reaches a second set value corresponding to the second detection probe (82), if the running time T is greater than or equal to the set water inlet time T1, the water pump (5) is closed, and the gas at the gas source (6) does not flow to the preliminary mixing device (13) any more along with the closing of the water pump (5).
2. The microbubble water generating apparatus according to claim 1, wherein the liquid level detection unit (8) comprises a first detection probe (81), a second detection probe (82), and a third detection probe (83) which are arranged in this order from top to bottom.
3. The microbubble water generating apparatus according to claim 2, wherein a third check valve (9) opposite to the water inlet direction is connected in parallel to both sides of the water pump (5), and the opening pressure of the third check valve (9) is greater than the pressure at the liquid level detection point corresponding to the second detection probe (82).
4. Micro bubble water generating device according to claim 1, wherein one side of the water pump (5) is provided with a first one-way valve (4) that is conductive along the water inlet direction, and one side of the air source (6) is provided with a second one-way valve (7) that is conductive along the air inlet direction.
5. Micro bubble water generating device according to claim 4, wherein a pressure relief valve (11) is provided at the upper end of the gas-liquid mixer (1).
6. A control method using the micro-bubble water generating device of any one of claims 1 to 5, wherein water is fed into the preliminary mixing device, the negative pressure generated by the preliminary mixing device sucks the gas into the preliminary mixing device, the water and the gas are preliminarily mixed by the preliminary mixing device and then are conveyed into the gas-liquid mixer, and are mixed with the gas maintaining a certain pressure in the gas-liquid mixer to form micro-bubble water, and the micro-bubble water can maintain a certain liquid level in the gas-liquid mixer and be continuously output;
when the water pump is started, recording the running time T of the water pump, and when the liquid level in the gas-liquid mixer reaches a second set value corresponding to a second detection probe (82), if the running time T is less than the set water inlet time T1, controlling the water pump to continuously feed water to the set water inlet time T1, wherein the pressure in the gas-liquid mixer does not reach the required pressure.
7. The control method according to claim 6, characterized by further comprising:
when the liquid level in the gas-liquid mixer is lower than the second setting value that second detecting probe (82) correspond, control water pump is intake in to preliminary mixing arrangement, and the negative pressure that preliminary mixing arrangement produced simultaneously inhales preliminary mixing arrangement with the gas of air supply department, water with gas is carried to the gas-liquid mixer after preliminary mixing of preliminary mixing arrangement in, until the liquid level in the gas-liquid mixer reaches the second setting value that second detecting probe (82) correspond.
8. The control method according to claim 7, characterized in that after the water pump is turned off, if the liquid level drops to or below the first set value corresponding to the third detection probe (83), the water pump is controlled to feed water into the gas-liquid mixer.
9. The control method according to claim 6, wherein when the pressure in the gas-liquid mixer is higher than the opening pressure of the third check valve, the water output by the water pump flows to the inlet of the water pump through the third check valve.
10. The control method according to claim 9, characterized in that, in case of failure of the third one-way valve, if the liquid level in the gas-liquid mixer reaches a third set value corresponding to the first detection probe (81), the water pump is shut down and an alarm is given.
11. The control method according to claim 10, wherein when the liquid level detection unit fails and cannot detect a third set value corresponding to the first detection probe (81) or a controller of the micro bubble water generation device fails, if the pressure in the gas-liquid mixer reaches a pressure relief value of the pressure relief valve, the pressure relief valve performs pressure relief.
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| CN110102195A (en) * | 2019-04-23 | 2019-08-09 | 上海行恒科技有限公司 | A kind of micro-nano bubble bathtub of high concentration and its control method |
| CN110479125B (en) * | 2019-09-03 | 2022-05-10 | 梁荷 | Overpressure aeration device and application |
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| CN108854611A (en) | 2018-11-23 |
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