CN114192205B - Organic solution evaporation device - Google Patents
Organic solution evaporation device Download PDFInfo
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- CN114192205B CN114192205B CN202111486544.XA CN202111486544A CN114192205B CN 114192205 B CN114192205 B CN 114192205B CN 202111486544 A CN202111486544 A CN 202111486544A CN 114192205 B CN114192205 B CN 114192205B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/16—Retorts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/08—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs
- B01D3/085—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs using a rotary evaporator
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- Chemical Kinetics & Catalysis (AREA)
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides an organic solution evaporation device, relates to the technical field of test equipment, and solves the technical problem that the evaporation device in the prior art is low in working efficiency when multi-sample continuous processing is performed. The organic solution evaporation device comprises a rack, wherein an evaporation sealing mechanism, a heating mechanism and a condensation collecting mechanism are arranged on the rack, the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part, the fixing part is rotatably arranged on the rack, the abutting part comprises a bottle seat and a rotating assembly, and the rotating assembly is connected with the bottle seat; the driving part is connected with the rotating assembly, the driving part drives the rotating assembly to move towards the fixing part so that the sample bottle on the bottle seat is in sealing and abutting connection with the fixing part, the rotating assembly drives the bottle seat, the sample bottle and the fixing part to rotate, and the heating mechanism is arranged behind the sample bottle; an air outlet channel is arranged in the fixing part and is communicated with the sample bottle and the condensation collecting mechanism. The invention is used for providing the organic solution evaporation device which effectively improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to an organic solution evaporation device.
Background
The evaporating device can be used for recovering and evaporating organic solvent, generally comprises a motor, a distillation flask, a heating pot and a condensing pipe, the motor is used for driving the distillation flask to rotate, the heating pot heats the distillation flask to evaporate the organic solvent in the distillation flask, and evaporated gas enters the condensing pipe for condensation.
However, when the conventional evaporation device is subjected to continuous processing of multiple samples, the distillation flask is fixed in a limited manner, so that the distillation flask is replaced and the organic solvent is very troublesome, and the working efficiency is low.
The applicant has found that the prior art has at least the following technical problems: the existing evaporation device has low working efficiency when facing multi-sample continuous treatment.
Disclosure of Invention
The invention aims to provide an organic solution evaporation device, which aims to solve the technical problem that the working efficiency of the evaporation device in the prior art is low when multi-sample continuous treatment is faced. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an organic solution evaporation device, which comprises a rack, wherein an evaporation sealing mechanism, a heating mechanism and a condensation collecting mechanism are arranged on the rack, wherein:
the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part, the fixing part is rotationally arranged on the rack, the abutting part comprises a bottle seat and a rotating assembly, the rotating assembly is connected with the bottle seat, the rotating assembly drives the bottle seat to rotate, and a sample bottle is arranged on the bottle seat;
the driving part is connected with the rotating assembly, the driving part drives the rotating assembly to move towards the fixing part so as to enable the sample bottle to be in sealed butt joint with the fixing part, the rotating assembly drives the bottle seat, the sample bottle on the bottle seat and the fixing part to rotate, the heating mechanism is arranged behind the sample bottle, and the heating mechanism is used for heating the sample bottle so as to enable organic solution in the sample bottle to be rapidly evaporated;
an air outlet channel is arranged in the fixing part, one end of the air outlet channel is communicated with the sample bottle, and the other end of the air outlet channel is communicated with the condensation collecting mechanism.
As a further improvement of the invention, the fixed part comprises a fixed seat and a movable seat, a fixed boss is arranged on the fixed seat, and the movable seat is sleeved on the fixed boss and can reciprocate along the fixed boss;
a positioning hole is formed in the movable seat, and a positioning piece penetrates through the positioning hole to be connected with the fixed seat, so that the movable seat can move relative to the fixed seat along the length direction of the positioning piece;
an elastic part is arranged between the fixed seat and the movable seat, and the elastic force of the elastic part drives the movable seat to move towards the direction far away from the fixed seat.
As a further improvement of the invention, a bottle mouth terminal is arranged at the end part of the fixed lug boss and is matched with the bottle mouth of the sample bottle.
As a further improvement of the present invention, a sealing pad is disposed on the movable seat, and the sample bottle abuts against the sealing pad.
As a further improvement of the invention, a rotating shaft is further arranged on the rack, the rotating shaft is rotatably connected to the rack through a coupling, and the fixing part is connected to the rotating shaft.
As a further improvement of the present invention, a first through hole is provided in the fixing portion, a second through hole is provided in the rotating shaft, the first through hole is communicated with the second through hole, and two ends of the first through hole and the second through hole respectively communicate the sample bottle with the condensation collecting mechanism.
As a further improvement of the present invention, liquid inlet pipes are further disposed in the first through hole and the second through hole, and the liquid inlet pipes pass through the first through hole and the second through hole and extend into the sample bottle.
As a further improvement of the present invention, the driving portion includes a driving assembly, a guide rail and a slider, the rotating assembly is connected to the slider, the slider is matched with the guide rail, and the driving assembly drives the slider to reciprocate on the guide rail.
As a further improvement of the invention, a vacuumizing mechanism is also arranged on the rack and is communicated with the air outlet channel.
As a further improvement of the present invention, the condensation collection mechanism includes a condenser, a cold trap and a collection bottle, the condenser is connected to the cold trap, the cold trap is connected to the air outlet channel, and the collection bottle is located at an outlet of the cold trap.
The beneficial effects of the invention are: the invention provides an organic solution evaporation device, which comprises an evaporation sealing mechanism, a heating mechanism and a condensation collecting mechanism, wherein the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part; the rotating assembly can drive the sample bottle and the fixed part to rotate, the heating mechanism is used for heating the sample bottle, so that the organic solvent in the sample bottle can be quickly and rotationally evaporated, the evaporated gas is collected by the condensation collecting mechanism, and when the sample bottle needs to be replaced in the process of facing multi-sample continuity treatment, the sample bottle is driven to move only by the driving part, so that the sample bottle can be replaced efficiently and quickly, and the working efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a partial block diagram of the present invention;
FIG. 3 is a perspective view of the evaporative sealing mechanism of the present invention;
FIG. 4 is a cross-sectional view of the evaporative sealing mechanism of the present invention;
fig. 5 is a partial structural sectional view of the evaporative sealing mechanism of the present invention.
In the figure 1, a frame; 2. a fixed part; 3. an abutting portion; 4. a drive section; 5. a liquid inlet pipe; 6. a heating mechanism; 7. a vacuum pumping mechanism; 8. a condensing and collecting mechanism; 11. a rotating shaft; 12. a coupling; 13. a first through hole; 14. a protective cover; 21. a fixed seat; 22. a movable seat; 23. fixing the boss; 24. an elastic member; 25. a positioning member; 26. positioning holes; 27. a gasket; 28. a bottle mouth terminal; 29. a second through hole; 31. a bottle seat; 32. a rotating assembly; 41. a drive assembly; 42. a guide rail; 43. a slider; 61. a heating assembly; 62. A temperature detection assembly; 71. a vacuum pump; 72. a vacuum gauge; 81. a condenser; 82. and (5) cold trap.
Detailed Description
The contents of the present invention and the differences between the present invention and the prior art can be understood with reference to fig. 1 to 5 and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown. It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any one of the technical means provided by the invention can be replaced or any two or more of the technical means or technical features provided by the invention can be combined with each other to obtain a new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without making creative efforts, and any two or more technical solutions or technical features provided by the present invention that are combined with each other by those skilled in the art to obtain a new technical solution.
In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The invention provides an organic solution evaporation device which can effectively improve the working efficiency.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 5.
The invention provides an organic solution evaporation device, which comprises a rack, wherein an evaporation sealing mechanism, a heating mechanism and a condensation collecting mechanism are arranged on the rack, wherein:
the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part, the fixing part is rotationally arranged on the rack, the abutting part comprises a bottle seat and a rotating assembly, the rotating assembly is connected with the bottle seat, the rotating assembly drives the bottle seat to rotate, and a sample bottle is arranged on the bottle seat;
the driving part is connected with the rotating assembly, the driving part drives the rotating assembly to move towards the fixing part so as to enable the sample bottle to be abutted against the fixing part in a sealing manner, the rotating assembly drives the bottle seat, the sample bottle on the bottle seat and the fixing part to rotate, the heating mechanism is arranged behind the sample bottle, and the heating mechanism is used for heating the sample bottle so as to enable the organic solution in the sample bottle to be evaporated quickly;
an air outlet channel is arranged in the fixing part, one end of the air outlet channel is communicated with the sample bottle, and the other end of the air outlet channel is communicated with the condensation collecting mechanism.
The invention provides an organic solution evaporation device, which comprises an evaporation sealing mechanism, a heating mechanism and a condensation collecting mechanism, wherein the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part; the rotating assembly can drive the sample bottle and the fixed part to rotate, the heating mechanism is used for heating the sample bottle, so that the organic solvent in the sample bottle can be quickly and rotationally evaporated, the evaporated gas is collected by the condensation collecting mechanism, and when the sample bottle needs to be replaced in the process of facing multi-sample continuity treatment, the sample bottle is driven to move only by the driving part, so that the sample bottle can be replaced efficiently and quickly, and the working efficiency is greatly improved.
As a further improvement of the invention, the fixed part comprises a fixed seat and a movable seat, a fixed boss is arranged on the fixed seat, and the movable seat is sleeved on the fixed boss and can reciprocate along the fixed boss;
a positioning hole is formed in the movable seat, and a positioning piece penetrates through the positioning hole to be connected with the fixed seat, so that the movable seat can move relative to the fixed seat along the length direction of the positioning piece;
an elastic part is arranged between the fixed seat and the movable seat, and the elastic force of the elastic part drives the movable seat to move towards the direction far away from the fixed seat.
Above-mentioned structure, fixed part include fixing base and sliding seat, and are provided with setting element and elastic component between fixing base and sliding seat for the sample bottle can elasticity butt on the sliding seat, improves the sealed effect between sample bottle and the sliding seat.
As a further improvement of the invention, a bottle mouth terminal is arranged at the end part of the fixed lug boss and is matched with the bottle mouth of the sample bottle. Bottleneck terminal and sample bottle's bottleneck phase-match, when sample bottle is high-speed rotatory, bottleneck terminal can play the positioning action to sample bottle, prevents that the horizontal direction displacement from appearing in sample bottle, further improves sealed effect.
As a further improvement of the present invention, a sealing pad is disposed on the movable seat, and the sample bottle abuts against the sealing pad. The sample bottle is abutted against the sealing gasket, so that the sealing effect is improved.
As a further improvement of the invention, a rotating shaft is further arranged on the rack, the rotating shaft is rotatably connected to the rack through a coupling, and the fixing part is connected to the rotating shaft.
The fixed part is rotated through pivot and shaft coupling and is set up in the frame, and runner assembly can drive the fixed part and rotate to realize high-speed rotatory evaporation.
As a further improvement of the present invention, a first through hole is provided in the fixing portion, a second through hole is provided in the rotating shaft, the first through hole is communicated with the second through hole, and two ends of the first through hole and the second through hole respectively communicate the sample bottle with the condensation collecting mechanism.
The bottom and the sample bottle intercommunication of first through-hole, first through-hole upper end and second through-hole intercommunication, the second through-hole collects the mechanism intercommunication with the condensation to ensure that the gas after the evaporation gets into the condensation through first through-hole, second through-hole and collects the mechanism. In addition, the first through hole and the second through hole are connected with a vacuumizing mechanism and used for vacuumizing the interior of the sample bottle.
As a further improvement of the present invention, liquid inlet pipes are further disposed in the first through hole and the second through hole, and the liquid inlet pipes pass through the first through hole and the second through hole and extend into the sample bottle.
The liquid inlet pipe is used for continuously supplying organic solvent into the sample bottle so as to realize continuous evaporation of a single sample.
As a further improvement of the present invention, the driving portion includes a driving assembly, a guide rail and a slider, the rotating assembly is connected to the slider, the slider is matched with the guide rail, and the driving assembly drives the slider to reciprocate on the guide rail.
As a further improvement of the invention, a vacuumizing mechanism is also arranged on the rack and is communicated with the air outlet channel.
As a further improvement of the present invention, the condensation collection mechanism includes a condenser, a cold trap and a collection bottle, the condenser is connected to the cold trap, the cold trap is connected to the air outlet channel, and the collection bottle is located at an outlet of the cold trap.
Example 1:
the invention provides an organic solution evaporation device, which comprises a rack 1, wherein an evaporation sealing mechanism, a heating mechanism 6, a vacuumizing mechanism 7 and a condensation collecting mechanism 8 are arranged on the rack 1, wherein:
the evaporation sealing mechanism comprises a fixing portion 2, an abutting portion 3 and a driving portion 4, a rotating shaft 11 is further arranged on the rack 1, the rotating shaft 11 is connected to the rack 1 in a rotating mode through a coupler 12, the fixing portion 2 is connected to the rotating shaft 11, and therefore the fixing portion 2 is arranged on the rack 1 in a rotating mode.
The fixed part 2 comprises a fixed seat 21 and a movable seat 22, a fixed boss 23 is arranged on the fixed seat 21, and the movable seat 22 is sleeved on the fixed boss 23 and can reciprocate along the fixed boss 23;
a positioning hole 26 is formed in the movable seat 22, and a positioning element 25 passes through the positioning hole 26 to be connected with the fixed seat 21, so that the movable seat 22 can move relative to the fixed seat 21 along the length direction of the positioning element 25;
an elastic part 24 is arranged between the fixed seat 21 and the movable seat 22, and the elastic force of the elastic part 24 drives the movable seat 22 to move towards the direction away from the fixed seat 21.
A sealing gasket 27 is arranged at the bottom of the movable seat 22, and a sample bottle is elastically abutted against the sealing gasket 27 to form an elastic sealing structure. And a bottleneck terminal 28 is arranged at the bottom of the fixed boss 23, and the bottleneck terminal 28 is matched with the bottleneck of the sample bottle.
The abutting part 3 comprises a bottle seat 31 and a rotating component 32, the rotating component 32 is connected with the bottle seat 31, the rotating component 32 drives the bottle seat 31 to rotate, and a sample bottle is arranged on the bottle seat 31.
Drive division 4 with rotating component 32 connects, drive division 4 drive rotating component 32 to fixed part 2 removes, so that the sealed butt of sample bottle is in on the sliding seat 22 of fixed part 2, rotating component 32 drives sample bottle on bottle seat 31, the bottle seat 31 and fixed part 2 rotates, heating mechanism 6 sets up in the sample bottle rear, heating mechanism 6 is used for heating the sample bottle so that the organic solution in the sample bottle evaporates fast. The heating mechanism 6 includes a heating unit 61 and a temperature detection unit 62.
Preferably, a protective cover 14 is arranged on the rack 1, and the sample bottle, the heating mechanism 6 and the fixing part 2 are wrapped in the protective cover 14.
Optionally, the driving portion 4 includes a driving assembly 41, a guide rail 42 and a sliding block 43, the rotating assembly 32 is connected to the sliding block 43, the sliding block 43 is matched with the guide rail 42, and the driving assembly 41 drives the sliding block 43 to reciprocate on the guide rail 42. So that the sample bottle is elastically sealed against the movable seat 22 of the fixed part 2.
The sample bottle condensation collecting device is characterized in that a first through hole 13 is formed in the fixing portion 2, the bottom of the first through hole 13 is communicated with a sample bottle, a second through hole 29 is formed in the rotating shaft 11, the first through hole 13 is communicated with the second through hole 29, and the sample bottle is communicated with the condensation collecting mechanism through the two ends of the first through hole 13 and the second through hole 29 respectively.
A liquid inlet pipe 5 is further arranged in the first through hole 13 and the second through hole 29, and the liquid inlet pipe 5 penetrates through the first through hole 13 and the second through hole 29 and extends into the sample bottle.
The vacuum pumping mechanism 7 comprises a vacuum pump 71 and a vacuum gauge 72, wherein the vacuum pump 71 is communicated with the first through hole 13 and the second through hole 29 and is used for pumping vacuum in the sample bottle. The condensation collection mechanism 8 comprises a condenser 81, a cold trap 82 and a collection bottle, wherein the condenser 81 is connected with the cold trap 82, the cold trap 82 is communicated with the first through hole 13 and the second through hole 29, and the collection bottle is positioned on an outlet of the cold trap 82.
The working process of the invention is as follows:
1. the sample bottle is placed on the bottle seat 31, the driving part 4 drives the rotating component 32 to move towards the fixing part 2, so that the sample bottle is elastically and hermetically abutted to the movable seat 22 of the fixing part 2, and the rotating component 32 drives the bottle seat 31, the sample bottle on the bottle seat 31 and the fixing part 2 to rotate.
2. The vacuum-pumping mechanism 7 is started to make the sample bottle in a vacuum state.
3. The heating mechanism 6 is activated to heat the sample vial to rapidly evaporate the organic solution in the sample vial. The liquid inlet pipe 5 is used for continuously supplying organic solution into the sample bottle.
The evaporated gas enters the cold trap 82 through the first through hole 13 and the second through hole 29, and is discharged from the outlet of the cold trap 82 after being condensed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides an organic solution evaporation plant which characterized in that, includes the frame be provided with evaporation sealing mechanism, heating mechanism and condensation collection mechanism in the frame, wherein:
the evaporation sealing mechanism comprises a fixing part, an abutting part and a driving part, the fixing part is rotationally arranged on the rack, the abutting part comprises a bottle seat and a rotating assembly, the rotating assembly is connected with the bottle seat, the rotating assembly drives the bottle seat to rotate, and a sample bottle is arranged on the bottle seat;
the driving part is connected with the rotating assembly, the driving part drives the rotating assembly to move towards the fixing part so as to enable the sample bottle to be in sealed butt joint with the fixing part, the rotating assembly drives the bottle seat, the sample bottle on the bottle seat and the fixing part to rotate, the heating mechanism is arranged behind the sample bottle, and the heating mechanism is used for heating the sample bottle so as to enable organic solution in the sample bottle to be rapidly evaporated;
an air outlet channel is arranged in the fixing part, one end of the air outlet channel is communicated with the sample bottle, and the other end of the air outlet channel is communicated with the condensation collecting mechanism.
2. The organic solution evaporation device according to claim 1, wherein the fixed portion comprises a fixed base and a movable base, a fixed boss is disposed on the fixed base, and the movable base is sleeved on the fixed boss and can reciprocate along the fixed boss;
a positioning hole is formed in the movable seat, and a positioning piece penetrates through the positioning hole to be connected with the fixed seat, so that the movable seat can move relative to the fixed seat along the length direction of the positioning piece;
an elastic part is arranged between the fixed seat and the movable seat, and the elastic force of the elastic part drives the movable seat to move towards the direction far away from the fixed seat.
3. The organic solution evaporation device of claim 2, wherein a bottleneck terminal is arranged at the end of the fixing boss, and the bottleneck terminal is matched with the bottleneck of the sample bottle.
4. The organic solution evaporation device of claim 2, wherein a sealing pad is provided on the movable seat, and the sample bottle abuts against the sealing pad.
5. The organic solution evaporation device of claim 2, wherein a rotating shaft is further disposed on the frame, the rotating shaft is rotatably connected to the frame through a coupling, and the fixing portion is connected to the rotating shaft.
6. The organic solution evaporation device of claim 5, wherein a first through hole is provided in the fixing portion, a second through hole is provided in the rotation shaft, the first through hole communicates with the second through hole, and both ends of the first through hole and the second through hole communicate the sample bottle with the condensation collection mechanism, respectively.
7. The organic solution evaporation device according to claim 6, wherein a liquid inlet pipe is further disposed in the first through hole and the second through hole, and the liquid inlet pipe extends into the sample bottle through the first through hole and the second through hole.
8. The organic solution evaporation apparatus of claim 1, wherein the driving unit comprises a driving assembly, a guide rail, and a slider, the rotating assembly is connected to the slider, the slider is engaged with the guide rail, and the driving assembly drives the slider to reciprocate on the guide rail.
9. The organic solution evaporation device of claim 1, wherein a vacuum pumping mechanism is further disposed on the frame, and the vacuum pumping mechanism is communicated with the air outlet channel.
10. The organic solution evaporation device of claim 1, wherein the condensation collection mechanism comprises a condenser, a cold trap and a collection bottle, the condenser is connected with the cold trap, the cold trap is connected with the air outlet channel, and the collection bottle is positioned on an outlet of the cold trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486544.XA CN114192205B (en) | 2021-12-07 | 2021-12-07 | Organic solution evaporation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486544.XA CN114192205B (en) | 2021-12-07 | 2021-12-07 | Organic solution evaporation device |
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| CN114192205A CN114192205A (en) | 2022-03-18 |
| CN114192205B true CN114192205B (en) | 2022-11-15 |
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