CN205412853U - Gaseous pulse agitating unit under liquid - Google Patents
Gaseous pulse agitating unit under liquid Download PDFInfo
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- CN205412853U CN205412853U CN201620188879.1U CN201620188879U CN205412853U CN 205412853 U CN205412853 U CN 205412853U CN 201620188879 U CN201620188879 U CN 201620188879U CN 205412853 U CN205412853 U CN 205412853U
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Abstract
Gaseous pulse agitating unit under liquid and method, the device is arranged in liquid at operating condition, can include box (1), vertical cylinder (2) and float (3), box (1) lateral wall is sealed, feasible gas can not see through the lateral wall and overflow, the structure that the bottom can see through for liquid, the top of box exists accesss to the outside opening of box, the box has can let in gaseous passageway, it is inside that vertical cylinder (2) are located box (1), be used for holding the float, at least, the vertical cylinder lateral wall can see through the liquid gentleness body, the box top is fixed in at its top, the top exists uncoveredly and is relative with opening on the box top, and float (3) be located vertical cylinder, and the weight of float is less than the buoyancy that receives when the float dipes the liquid level completely, the opening contact on float upper end and the box top and the blocking during full of liquid in the box the opening to and the float is followed when the inside gaseous volume of box reaches the predetermined quantity the opening part falls, its simple structure, makes easy, low in cost, easy to maintain.
Description
Technical field
The utility model relates generally in water or forms the liquid agitation technology of gas disturbance in other liquid, relates more specifically to gas pulses agitating device and liquid stirring method under a kind of liquid.
Background technology
In technical fields such as chemical industry, water process and bioengineering, there is a lot of occasion to need in water and be passed through gas formation disturbance and stirring.
Such as in water treatment field, the biological treatment of sewage typically requires and is passed through gas in inoculum, and one of its purpose is that inoculum is carried out the stirring that intensity is enough.
For another example, in chemical industry and water treatment field, there is such situation, in order to prevent the suspension in water from precipitating in container, need it to be stirred or disturbance.
Existing technology is to use mechanical agitation or continuous aeration mostly, consumes a lot of energy.The most above-mentioned filter process is not required to continuous aeration stirring in many instances, and suitable intermittent aerating also can reach stir purpose and ensure that technical process is smoothed out.Existing technology just has replaced by the opening and closing of the valve on aerated conduit and realize intermittent aerating, but such mode needs more valve and control equipment, adds investment, and poor reliability.
Utility model content
Problem above in view of prior art, it is proposed that the utility model.
According to an aspect of the present utility model, provide gas pulses agitating device under a kind of liquid, this device busy state is placed in liquid, casing (1) can be included, column (2) and float (3), casing (1) sidewall seals, gas can not be escaped through sidewall, the structure that bottom can pass through for liquid, the top of casing exists and leads to the opening outside casing, casing has the passage that can be passed through gas, it is internal that column (2) is positioned at casing (1), for accommodating float, at least column sidewall can pass through liquids and gases, casing top is fixed at its top, top exists uncovered and relative with the opening on casing top；And float (3) is positioned at column, the buoyancy that the weight of float is subject to when being completely immersed in liquid level less than float, when in casing hydraulically full time float upper end and casing top on openings contact and block described opening, and float falls from described opening part when the gas volume of box house reaches predetermined quantity.
Alternatively, float (3) is single strip object.
Alternatively, float (3) is that the float assembly being made up of upper float (301), flexible connecting member (302) and lower float (303), upper float (301) and lower float (303) are linked together by flexible connecting member (302).
Gas pulses agitating device under liquid according to the utility model embodiment, the composition of float can meet following condition: the center of gravity of (1) float is positioned on the axle center of length direction and is partial to vertical lower end when float is positioned over column；And (2) are when the opening on upper surface and the described casing top of float (3) completely attaches to, the weight of float > amass to the open section on the vertical range × described casing top of float bottom at liquid unit weight × float and the openings contact on described casing top.
Gas pulses agitating device under liquid according to the utility model embodiment, in the case of for float assembly, the composition of float assembly meets following condition: the weight of (1) upper float (301) is totally immersed in liquid suffered buoyancy less than it, and buoyancy sum suffered by each several part when the gross weight of float assembly is totally immersed in liquid less than it；And (2) are when the upper float of float assembly completely attaches to the lower port of aeration passage and float assembly is stretched over full-size, float assembly gross weight > liquid unit weight × float is long-pending to the open section on the vertical discrepancy in elevation × described casing top of lower float minimum point with at the openings contact on described casing top.
Alternatively, the opening on described casing top can do interior chamfered.
Gas pulses agitating device under liquid according to the utility model embodiment, float contacts the opening on described casing top and the bottom of column time different under maximum extension state.
Gas pulses agitating device under liquid according to the utility model embodiment, the cross section of column (2) can be circular.
Gas pulses agitating device under liquid according to the utility model embodiment, upper float (301) can be the spheroid of smooth outer surface.
Gas pulses agitating device under liquid according to the utility model embodiment, described bottom half can be uncovered, and gas can be passed through by bottom half.
Gas pulses agitating device under liquid according to the utility model embodiment, described column can be detachable block.
Gas pulses agitating device under liquid according to the utility model embodiment, under liquid, gas pulses agitating device may be used for water treatment technology.
Gas pulses agitating device under liquid according to the utility model embodiment, the opening at the top of casing can be to lead to the aeration passage (101) outside casing, and float can block aeration passage when contacting with the lower port of aeration passage.
Gas pulses agitating device under liquid according to the utility model embodiment, aeration passage (101) can be cross section be circular pipeline, its upper end exceeds the outer surface at casing 1 top, and its lower end is less than the inner surface at casing 1 top.
According to another aspect of the present utility model, provide under a kind of liquid utilized any one of aforementioned claim gas pulses agitating device to carry out the liquid stirring method of liquid agitation, under liquid, gas pulses agitating device is placed in liquid, under original state, float blocks the opening on casing top, and described liquid stirring method may include that (a) continues to be passed through gas to box house；B the liquid level of () box house declines, when the liquid level of box house drops to predetermined altitude, float falls automatically, the opening effusion from casing top of the gas in casing, liquid level rises, float rises the opening blocked on casing top again, and again repeats the process of step (b).
Liquid stirring method according to the utility model embodiment, it is also possible to include changing float by operations described below: pull down column, and take out the float being replaced；The float of replacement is placed in column；And column is fixed to casing.
Under liquid according to the utility model embodiment, gas stirring device and method, have the advantage that
(1) in the occasion needing high intensity agitation liquid, under liquid, gas pulses agitating device low discharge air-flow is high intensity pulses, avoid high power air blowers or the use of air compressor machine using the stirring of high intensity continuous flow to cause, thus save equipment investment and operating cost；
(2) simple structure, easy to manufacture, cheap；And
(3) there is not easily worn part, fault rate is little and is easily maintained, and service life is long.
Accompanying drawing explanation
From detailed description to the utility model embodiment below in conjunction with the accompanying drawings, these and/or other side of the present utility model and advantage will become clearer from and are easier to understand, wherein:
Fig. 1 shows the structural representation of gas pulses agitating device 100 under the liquid according to one embodiment of the utility model, and wherein float is single strip object.
Fig. 2 (a)-(f) shows the course of work schematic diagram of gas pulses agitating device under the liquid shown in the Fig. 1 according to the utility model embodiment, wherein L0 indicating liquid liquid level, and A0 indicates breather pipe.
Fig. 3 shows according to the structural representation of gas pulses agitating device 200 under the liquid that wherein float is the float assembly being comprised of multiple members of one embodiment of the utility model.
Fig. 4 (a)-4 (f) shows the course of work schematic diagram of gas pulses agitating device under the liquid shown in the Fig. 3 according to the utility model embodiment.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the utility model, with detailed description of the invention, the utility model is described in further detail below in conjunction with the accompanying drawings.
Before being described in detail, understand for ease of those of ordinary skill in the art, first summarize invention thought the most of the present utility model.The utility model is made up of casing, column and float, and column is in casing, and float is vertically contained in column, and casing top exists opening.In the case of being completely filled with liquid in casing, casing open top blocked by float, along with insufflation gas in hydraulically full casing, in gas makes casing, liquid level declines, when the gas volume of box house reaches predetermined quantity, float falls from described opening part, thus gas exposes in casing, thus liquid is formed disturbance；Along with the effusion of gas, the liquid level in casing rises, and float rises the opening blocked on casing top again.When gas is persistently filled with, above-mentioned liquid level decline → float drops → to block opening be the process moved in circles to gas ejection → liquid level rising → float, and automatically carries out, it is achieved that gas is with the impulse form disturbance to liquid.In said process, in addition to keeping insufflation gas, without artificial or Mechanical course, save energy, replace with traditional opening and closing by the valve on aerated conduit and realize compared with the situation of intermittent aerating, save parts, it is to avoid because valve frequently uses easy out of order problem, it is achieved that the economic and gas pulses formula liquid perturbation of high reliability.
According to the utility model embodiment, it is provided that gas pulses agitating device under a kind of liquid, this device busy state is placed in liquid, including casing, column and float.Wall box seals so that gas can not escape through sidewall, and bottom is the structure that liquid can pass through, and the top of casing exists and leads to the opening outside casing, and casing has the passage that can be passed through gas.Column is positioned at box house, is used for accommodating float, and at least column sidewall can pass through liquids and gases, and casing top is fixed at its top, and top exists uncovered and relative with the opening on casing top.Float is positioned at column, the buoyancy that the weight of float is subject to when being completely immersed in liquid level less than float, when in casing hydraulically full time float upper end and casing top on openings contact and block described opening, and float falls from described opening part when the gas volume of box house reaches predetermined quantity.
Describing according to the float of one embodiment of the utility model below in conjunction with Fig. 1 is the structure of gas pulses agitating device under the liquid in the case of single strip object.
Fig. 1 shows the structural representation of gas pulses agitating device 100 under the liquid according to one embodiment of the utility model, and wherein float is single strip object.
As it is shown in figure 1, gas pulses agitating device 100 includes casing 1, column 2 and float 3 under liquid.
Casing 1 can be a cube shaped or cylindrical housings the most uncovered, and surrounding sidewall is airtight.But being only for preferred exemplary, as required, casing can be other shape.
In one example, during work, gas can be passed through from bottom half, as shown in Fig. 3, Fig. 4 below.But it should be noted that be not required to offer gas from bottom half to be passed through passage, alternatively, gas can be offered at casing top or side and be passed through passage.About being passed through the number of gas passage, example below is shown as one, but could be arranged to two or more as required.
In the example depicted in fig. 1, the form that the opening outside casing is aeration passage is led at casing top, and aeration passage 101 exceeded the outer surface of the upper bottom surface of casing 1 through the upper end and its upper end open, and lower ending opening is less than the inner surface at the upper end of casing 1.But, the form of opening is not limited to this, can be other form as required, only opens a hole at casing top for example, it is possible to be simply.
In the example depicted in fig. 1, column 2 can be the tubular shell that a sidewall being positioned within casing 1 is permeable, its cross section is circular or square, and its upper end is uncovered and relative with the lower port of aeration passage 101, and the cross dimension of the inner chamber of column 2 is more than the diameter of aeration passage 101.
In the example depicted in fig. 1, float 3 is an elongate objects being placed within column 2.Float preferred surface is smooth, and such frictional force is little, easily the opening at casing top is carried out tight seal.Float upper end can be hemispherical or semielliptical shape or taper or be simply plane, as long as opening can be blocked.
Float 3 weight is less than its buoyancy suffered in being totally immersed in liquid, its center of gravity is positioned on the axle center of length direction and is partial to one end, that is being vertical floating state when float 3 is devoted in liquid when and its one end is exposed on the water surface, when so ensureing hydraulically full in casing, float can automatically float and block casing open top.
In addition, the length of float 3 less than the interior end of column 2 to the vertical range between the lower port of aeration passage 101, also just say when float 3 is placed in column 2 inside when, it can not contact its upper and lower two ends simultaneously, i.e. can not contact the interior end and the lower port of aeration passage 101 of column 2 simultaneously, otherwise float can only remain and block the open-topped state of casing, and cannot drop from opening part, the most just cannot exit.
In addition, can draw through force analysis, so that gas has been filled with to (assuming that now casing open top still blocked by float) float 3 during float bottom to drop from opening part in casing, the composition of float 3 also needs to meet following condition: the weight of float 3 is multiplied by, more than the unit weight of liquid, the horizontal section long-pending (when the upper-end contact of float 3 is to the lower end of aeration passage 101 obstruction aeration passage 101 completely) that aeration passage 101 inner chamber is multiplied by again to the vertical discrepancy in elevation between the lower port of aeration passage 101 in the lower end of float 3.
Fig. 2 (a)-(f) shows the course of work schematic diagram of gas pulses agitating device under the liquid shown in the Fig. 1 according to the utility model embodiment, wherein L0 indicating liquid liquid level, and A0 indicates breather pipe.
Being full of water logging in Fig. 2 (a) shows casing and do not had the situation of float, this is original state, it is seen that the opening of aeration passage blocked by float 2.
Fig. 2 (b) shows that the liquid level L1 in casing constantly declines along with being inflated in casing by breather pipe A0.
Fig. 2 (c) shows that, when the gas volume of box house reaches predetermined quantity, float falls from aeration passage 101, and aeration starts.
Fig. 2 (d) shows during aeration is carried out, and liquid level rises.
Fig. 2 (e) shows that aeration is nearly completed, and float rises.
Fig. 2 (f) shows that aeration is complete, and the opening of aeration passage 101 blocked again by float.
It follows that the cyclic process that Fig. 2 (b)-2 (f) will be repeated, i.e. repeating: liquid level declines-" float falls beginning aeration-" liquid level rises-" float rises-" aeration is complete, the process of opening blocked by float.
Above in conjunction with Fig. 1 and Fig. 2 (a)-(f), describe structure and the example of the course of work of gas pulses agitating device under the liquid that wherein float is single strip object.Structure and the example of the course of work of gas pulses agitating device under the liquid that wherein float is the float assembly being comprised of multiple members are described below with reference to Fig. 3 and Fig. 4 (a)-(f).
Fig. 3 shows according to the structural representation of gas pulses agitating device 200 under the liquid that wherein float is the float assembly being comprised of multiple members of one embodiment of the utility model.
As it is shown on figure 3, float 3 includes: upper float 301, flexible connecting member 302 and lower float 303.Upper float 301 is spheroid, and its diameter is less than internal diameter or the cross section length of side of column 2, and more than aeration passage 101 internal diameter, preferably spherome surface is smooth；Lower float 303 is smooth less than the spheroid of internal diameter of column 2 or cylinder or other any shape, preferably outer wall for diameter；The upper float 301 of flexible connecting member 302 and lower float 303 link up, its length makes the maximum extension length of float 301, connector 302 and the lower float 303 interior end less than column 2 to the vertical range of the lower surface of aeration passage 101, and works as upper float 301 and completely attaches to the circumference of aeration passage lower port and float assembly 3 vertical stretching does not reaches the bottom of column 2 to full-size float 303 at present.Additionally, the composition of float assembly also needs to meet three below condition:
Condition one, the buoyancy that the weight of upper float 301 is subject in a liquid less than it, i.e. go up when float 301 is individually placed in liquid it be floating in a liquid and a part is an exposure on liquid level；
Condition two, the weight of upper float 301 is multiplied by float 301 less than the unit weight of liquid and is multiplied by the basal area of aeration passage 101 inner chamber with the vertical discrepancy in elevation of the minimum point of upper float 301 during the formation full contact of the lower port of aeration passage 101 to the lower port of aeration passage 101 again；
Condition three, the gross weight of float assembly is multiplied by aeration passage 101 lower port more than the unit weight of liquid and is multiplied by the basal area of aeration passage 101 inner chamber to the vertical drop (when the lower end of upper float 301 with aeration passage 101 is formed and completely attaches to and be stretched over maximum length) between the minimum point of lower float 303 again.
Below in conjunction with the operation principle of gas pulses agitating device under the liquid shown in Fig. 4 (a)-4 (f) explanatory diagram 3 and process.When reality is applied, under above-mentioned liquid, gas pulses agitating device must be fixedly mounted on the container or the reactor that need aeration agitation so that it is be submerged in completely under liquid level；It is passed through continuous print air-flow so that gas just ascends into the inside of casing 1 in the bottom of casing 1.Its course of work is as follows: originally the inside of casing 1 is liquid filled, the upper float 301 of float assembly acting on float downward and terminating in the lower port of aeration passage at liquid buoyancy, just aeration passage 101 is blocked (Fig. 4 (a))；Along with starting inflation toward casing 1, the inside of casing 1 starts inventory of gas, form gas-liquid interface and interface in casing 1 and move down (Fig. 4 (b)) in the accumulation within casing 1 along with gas, now playing float 301 and still suffer from due to the lifting force of the blocked formation of aeration passage 101 in addition to bearing buoyancy, this thrust is numerically equal to the unit weight of liquid and is multiplied by the lower surface of aeration passage 101 and is multiplied by the basal area of aeration passage to the vertical height of the gas-liquid interface in casing 1 again；Along with air-flow continues to be filled with casing 1, the liquid level within casing 1 continues to decline, and lower float 303 is also followed liquid level and declined, until flexible connecting member 302 reaches its maximum extension length (Fig. 4 (c))；Gas continues to be passed through, liquid level within casing 1 continues to decline, but lower float 303 connected piece 302 is held and stops declining, thus lower float 303 starts to be exposed to (Fig. 4 (d)) in the gas on liquid level, until float 303 is almost fully exposed on the liquid level in casing 1, float 303 is no longer influenced by the buoyancy of liquid and its weight is all added on upper float 301 by flexible connecting member 302；Owing to the gross weight of above-mentioned float assembly meets above-mentioned condition three, upper float 301 falls from the lower port of aeration passage 101 immediately, aeration passage 101 is opened, in casing 1, the gas of accumulation escapes and to liquid formation disturbance (Fig. 4 (e)) with speed quickly from aeration passage 101, and the liquid level in casing 1 rises the most rapidly until upper float 301 is pushed up delivering to again aeration passage 101 be blocked (Fig. 4 (f)), aeration interrupts immediately, starts again at accumulation gas in casing 1；So circulation is repeatedly, and the continuous flow that flow is less is i.e. converted into the pulse feature air-flow of interval.
It should be noted that the figures above is merely illustrative, should not be used as restriction of the present utility model.
Such as, in Fig. 3, float assembly includes float and lower float (can be referred to as sub-float), but the number of sub-float can be more, such as, can have three or more sub-floats, changes an angle and says, lower float 303 can split further.
In one example, the opening on described casing top has done interior chamfered.The benefit of chamfering is for instance that (1) removes break corner, it is to avoid scratch float；(2) gas flushing to opening it is easy to, it is possible to rinse out the foreign material clung on opening
In example above, the cross section of column 2 is illustrated as circle or square, but the shape of column 2 can be other form, preferably regular polygon, such as square, regular hexagon, positive eight deformation etc..
In example above, the upper surface shape of single float (2) is illustrated as hemisphere, or the shape of upper float is illustrated as spheroid, the most as previously mentioned, float upper end can be other shape, semielliptical shape or taper or be simply plane, as long as opening can be blocked.
Preferably, column is detachable block, consequently facilitating the installation of float, maintenance.
Under the liquid of the utility model embodiment, gas pulses agitating device is passed through gas formation disturbance and the occasion of stirring be applicable at chemical industry, water process and bioengineering and any needs toward water or other liquid.
According to the utility model embodiment, additionally provide under a kind of liquid utilized any one of aforementioned claim gas pulses agitating device to carry out the liquid stirring method of liquid agitation, under liquid, gas pulses agitating device is placed in liquid in working order, under original state, float blocks the opening on casing top, and described liquid stirring method includes: (a) continues to be passed through gas to box house；B the liquid level of () box house declines, when the liquid level of box house drops to predetermined altitude, float falls automatically, the opening effusion from casing top of the gas in casing, liquid level rises, float rises the opening blocked on casing top again, and again repeats the process of step (b).
In the liquid stirring method of aforementioned exemplary, float can be changed by operations described below: pull down column from casing；The float being replaced is taken out from column；The float of replacement is placed in column；And column is again fixed to casing.Certainly, if it find that float is not required to change, and only need to be cleaned processing, it is also possible to after being cleaned float processing, put back to column again, then column is again fixed to casing.
Under liquid according to the utility model embodiment, gas stirring device and method, have the advantage that
(1) in the occasion needing high intensity agitation liquid, under liquid, gas pulses agitating device low discharge air-flow is high intensity pulses, avoid high power air blowers or the use of air compressor machine using the stirring of high intensity continuous flow to cause, thus save equipment investment and operating cost；
(2) simple structure, easy to manufacture, cheap；And
(3) there is not easily worn part, fault rate is little and is easily maintained, and service life is long.
Being described above each embodiment of the present utility model, described above is exemplary, and non-exclusive, and it is also not necessarily limited to disclosed each embodiment.In the case of the scope and spirit without departing from illustrated each embodiment, many modifications and changes will be apparent from for those skilled in the art.Therefore, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (10)
1. a gas pulses agitating device under liquid, this device busy state is placed in liquid, including casing (1), column (2) and float (3),
Casing (1) sidewall seals so that gas can not escape through sidewall, and bottom is the structure that liquid can pass through, and the top of casing exists and leads to the opening outside casing, and casing has the passage that can be passed through gas,
It is internal that column (2) is positioned at casing (1), is used for accommodating float, and at least column sidewall can pass through liquids and gases, and casing top is fixed at its top, and top exists uncovered and relative with the opening on casing top；And
Float (3) is positioned at column, the buoyancy that the weight of float is subject to when being completely immersed in liquid level less than float, when in casing hydraulically full time float upper end and casing top on openings contact and block described opening, and float falls from described opening part when the gas volume of box house reaches predetermined quantity.
Gas pulses agitating device under liquid the most according to claim 1, is characterized in that described float (3) is single strip object.
Gas pulses agitating device under liquid the most according to claim 1, it is characterized in that float (3) is that the float assembly being made up of upper float (301), flexible connecting member (302) and lower float (303), upper float (301) and lower float (303) are linked together by flexible connecting member (302).
Under liquid the most according to claim 2, gas pulses agitating device, is characterized in that, the composition of float meets following condition:
(1) center of gravity of float is positioned on the axle center of length direction and is partial to vertical lower end when float is positioned over column；And
(2) when the opening on upper surface and the described casing top of float (3) completely attaches to, the weight of float > amass to the open section on the vertical range × described casing top of float bottom at liquid unit weight × float and the openings contact on described casing top.
Under liquid the most according to claim 3, gas pulses agitating device, is characterized in that, the composition of float assembly meets following condition:
(1) weight of upper float (301) is totally immersed in liquid suffered buoyancy less than it, and buoyancy sum suffered by each several part when the gross weight of float assembly is totally immersed in liquid less than it；And
(2) when the upper float of float assembly completely attaches to the lower port of aeration passage and float assembly is stretched over full-size, float assembly gross weight > liquid unit weight × float is long-pending to the open section on the vertical discrepancy in elevation × described casing top of lower float minimum point with at the openings contact on described casing top.
6., according to gas pulses agitating device under the liquid according to any one of claim 1 to 5, it is characterized in that the opening on described casing top has done interior chamfered.
7., according to gas pulses agitating device under the liquid according to any one of claim 1 to 5, it is characterized in that contacting the opening on described casing top and the bottom of column when described float is different under maximum extension state.
8., according to gas pulses agitating device under the liquid according to any one of claim 1 to 5, it is characterized in that the cross section of column (2) is circle.
Under liquid the most according to claim 3, gas pulses agitating device, is characterized in that, upper float (301) is the spheroid of smooth outer surface.
10. according to gas pulses agitating device under the liquid according to any one of claim 1 to 5, it is characterized in that described bottom half is uncovered, gas is passed through by bottom half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188879.1U CN205412853U (en) | 2016-03-11 | 2016-03-11 | Gaseous pulse agitating unit under liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188879.1U CN205412853U (en) | 2016-03-11 | 2016-03-11 | Gaseous pulse agitating unit under liquid |
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| CN205412853U true CN205412853U (en) | 2016-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105582846A (en) * | 2016-03-11 | 2016-05-18 | 美清科技（北京）有限公司 | Gas pulse stirring device under liquid and liquid stirring method |
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2016
- 2016-03-11 CN CN201620188879.1U patent/CN205412853U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105582846A (en) * | 2016-03-11 | 2016-05-18 | 美清科技（北京）有限公司 | Gas pulse stirring device under liquid and liquid stirring method |
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