CN112827430A - Liquid caustic soda injection device used in reaction tower - Google Patents
Liquid caustic soda injection device used in reaction tower Download PDFInfo
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- CN112827430A CN112827430A CN202110007356.8A CN202110007356A CN112827430A CN 112827430 A CN112827430 A CN 112827430A CN 202110007356 A CN202110007356 A CN 202110007356A CN 112827430 A CN112827430 A CN 112827430A
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- caustic soda
- fixedly connected
- liquid caustic
- ball sleeve
- reaction tower
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/002—Nozzle-type elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of injection devices, in particular to a liquid caustic soda injection device used in a reaction tower, which comprises a circular tube, an inner ball sleeve and an outer ball sleeve, wherein a double-connection mechanism is arranged on the circular tube, the inner ball sleeve is connected with the circular tube, the inner ball sleeve is communicated with the circular tube, the outer ball sleeve is connected with the inner ball sleeve, the outer ball sleeve is connected with an installation tube, the outer ball sleeve is communicated with the installation tube, a positioning mechanism is connected between the installation tube and the circular tube, the installation tube is provided with two semi-annular grooves, circular hole grooves are respectively arranged in the two semi-annular grooves, tension springs are respectively connected in the two circular hole grooves, pull rods are respectively connected in the two semi-annular grooves, the pull rods are connected with the tension springs, a fixed water distribution plate is connected between the two pull rods, a vertical shaft is connected on the fixed water distribution plate, two semi-spiral grooves are arranged in the installation tube, a dynamic water distribution mechanism is, the use is comparatively clean, and installation angle is easily adjusted simultaneously, and the mounting means is comparatively nimble, comparatively practical.
Description
Technical Field
The invention relates to the technical field of injection devices, in particular to a liquid caustic soda injection device used in a reaction tower.
Background
As is well known, the liquid caustic soda injection device used in the reaction tower is an auxiliary device which is used for liquid caustic soda injection during the operation of the reaction tower so as to make the liquid caustic soda injection more uniform and make the reaction effect of the reaction tower better, and is widely used during the liquid caustic soda injection process in the reaction tower.
The existing liquid caustic soda injection device comprises a circular tube and a flange plate, one end of the circular tube is fixedly connected with the flange plate, the other end of the circular tube is fixedly connected with a liquid separation frame, when the liquid caustic soda injection device is used, the liquid caustic soda injection device is firstly installed in a liquid caustic soda tube system in a reaction tower through bolts, and liquid caustic soda penetrates through the circular tube and is injected through the liquid separation frame.
However, the prior art scheme has the following defects that the structure is fixed, the injection amount of the caustic soda liquid is not easy to adjust according to the reaction condition in the reaction tower, the injection effect is poor, scaling is easy to occur after long-term use, the use cleanness is poor, and meanwhile, the flange plate and the circular tube are of a fixed structure, so that the flange plate is easy to be limited by the space in the reaction tower, the installation limitation is high, and the practicability is low.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a liquid caustic soda injection device used in a reaction tower, which is easy to adjust the injection amount of liquid caustic soda according to the specific conditions in the reaction tower, has better injection effect and more flexible structure, has less scale formation amount after long-term use, better use cleanness, easier adjustment of installation angle, more flexible installation mode, lower use limitation and higher practicability.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a liquid caustic soda injection device used in a reaction tower comprises a circular tube, an inner ball sleeve and an outer ball sleeve, wherein a double-connection mechanism is installed on the circular tube, the inner ball sleeve is fixedly connected with the circular tube, the inner ball sleeve is communicated with the circular tube, the outer ball sleeve is connected with the inner ball sleeve, the outer ball sleeve is fixedly connected with an installation tube, the outer ball sleeve is communicated with the installation tube, a positioning mechanism is fixedly connected between the installation tube and the circular tube, two semicircular grooves are formed in the bottom end of the installation tube, circular hole grooves are formed in the two semicircular grooves, tension springs are fixedly connected in the two circular hole grooves, pull rods are slidably connected in the two semicircular grooves, the pull rods are fixedly connected with the tension springs, a fixed water distribution plate is fixedly connected between the two pull rods, a vertical shaft is fixedly connected on the fixed water distribution plate, two semi-spiral grooves are formed in the installation tube, and a dynamic water distribution mechanism is installed in the two semi-spiral grooves, the movable water distribution mechanism is connected with the vertical shaft in a rotating mode, the movable water distribution mechanism comprises two connecting shafts, the two connecting shafts are respectively connected with the two semi-spiral grooves, the two connecting shafts are connected with arc-shaped scrapers, the two arc-shaped scrapers are fixedly connected with movable water distribution plates, the movable water distribution plates are connected with the vertical shaft in a rotating mode, the positioning mechanism comprises two upper positioning pieces and two lower positioning pieces, the two upper positioning pieces are fixedly connected with the circular pipe, the two lower positioning pieces are fixedly connected with the installation pipe, upper connecting holes are formed in the two upper positioning pieces, lower connecting holes are formed in the two lower positioning pieces, and fastening bolts are arranged in one connecting hole in the upper connecting holes.
Preferably, the double-link mechanism includes ring flange and screwed pipe, the ring flange with the pipe rotates to be connected, has seted up a plurality of vertical grooves in the pipe, and is a plurality of equal sliding connection has vertical strip in the vertical groove, and is a plurality of vertical strip all with screwed pipe fixed connection, ring flange and screwed pipe threaded connection.
Preferably, a water collecting ring is fixedly connected to the installation pipe.
Preferably, the vertical shaft is sleeved with a spring, and the spring is positioned between the fixed water distribution plate and the movable water distribution plate.
Preferably, the top end of the vertical shaft is fixedly connected with a conical cap.
Preferably, the bottom end of the fixed water distribution plate is fixedly connected with a pull ring.
Preferably, the arc-shaped scraper blade is fixedly connected with two scrapers.
Preferably, a washer is provided on the fastening bolt.
Preferably, the flange plate is provided with an annular groove, and a sealing ring is arranged in the annular groove.
Preferably, a sealing gasket is arranged in the outer ball sleeve.
(III) advantageous effects
Compared with the prior art, the invention provides a liquid caustic soda injection device used in a reaction tower, which has the following beneficial effects:
1. this a liquid caustic soda injection apparatus for in reaction tower through being connected of extension spring and pull rod, is convenient for decide the distributive plate and move the distributive plate and adjust the jet mass of liquid caustic soda according to the liquid pressure in the pipe, and it is better to spray the effect, is connected through moving the rotation of distributive plate and vertical scroll, is convenient for move the distributive plate and rotates for deciding the distributive plate to be convenient for when liquid caustic soda jet mass is great, reduce liquid caustic soda spun resistance, it is comparatively practical.
2. This a liquid caustic soda injection apparatus for among reaction tower, through the connection of half helicla flute, connecting axle and arc scraper blade, be convenient for the stable board that divides that moves of installation pipe, the arc scraper blade of being convenient for simultaneously realizes the clearance of the inner wall of installation pipe when the liquid caustic soda injection volume of being convenient for changes, and the intraductal scale deposit volume of installation is less, uses the cleanliness factor better.
3. This a liquid caustic soda injection apparatus for in reaction tower, through the connection of interior ball cover and outer ball cover, be convenient for adjust installation angle, through the cooperation of last spacer and spacer down, be convenient for stabilize the relative angle of interior ball cover and outer ball cover, the angle between interior ball cover and the outer ball cover is easier to be controlled, and the stability in use is better, through the design of doubly-linked mechanism, be convenient for this a liquid caustic soda injection apparatus's for in reaction tower flange joint and threaded connection, the mounting means is comparatively nimble, the use limitation is lower, and the practicality is higher.
Drawings
FIG. 1 is a schematic cross-sectional perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;
FIG. 4 is an enlarged partial view of FIG. 1 at C;
FIG. 5 is an enlarged view of a portion of FIG. 1 at D according to the present invention;
fig. 6 is a schematic perspective view of the present invention.
In the figure: 1. a circular tube; 2. an inner ball sleeve; 3. an outer ball sleeve; 4. installing a pipe; 5. a tension spring; 6. a pull rod; 7. fixing a water distribution plate; 8. a vertical shaft; 9. a connecting shaft; 10. an arc-shaped scraper plate; 11. a dynamic water distribution plate; 12. an upper positioning sheet; 13. a lower locating plate; 14. fastening a bolt; 15. a flange plate; 16. a threaded pipe; 17. a vertical strip; 18. a water collecting ring; 19. a spring; 20. a conical cap; 21. a pull ring; 22. a scraper; 23. a gasket; 24. a seal ring; 25. and a gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-6, a liquid caustic soda injection device used in a reaction tower comprises a circular tube 1, an inner ball sleeve 2 and an outer ball sleeve 3, wherein a double connection mechanism is installed on the circular tube 1, the double connection mechanism comprises a flange 15 and a threaded pipe 16, the flange 15 is rotatably connected with the circular tube 1, a plurality of vertical grooves are formed in the circular tube 1, vertical strips 17 are slidably connected in the vertical grooves, the vertical strips 17 are fixedly connected with the threaded pipe 16, the flange 15 is in threaded connection with the threaded pipe 16, so that the flange connection and the threaded connection of the liquid caustic soda injection device used in the reaction tower are facilitated, the installation mode is flexible, the use limitation is low, the practicability is high, the inner ball sleeve 2 is fixedly connected with the circular tube 1, the inner ball sleeve 2 is communicated with the circular tube 1, the outer ball sleeve 3 is connected with the inner ball sleeve 2, the installation angle is convenient to adjust, the outer ball sleeve 3 is fixedly connected with an installation pipe 4, the outer ball sleeve 3 is communicated with the installation pipe 4, a positioning mechanism is fixedly connected between the installation pipe 4 and the circular pipe 1, two semi-annular grooves are formed in the bottom end of the installation pipe 4, circular hole grooves are formed in the two semi-annular grooves, tension springs 5 are fixedly connected in the two circular hole grooves, pull rods 6 are connected in the two semi-annular grooves in a sliding manner, the pull rods 6 are fixedly connected with the tension springs 5, the fixed water distribution plate 7 and the movable water distribution plate 11 can adjust the spraying amount of the liquid caustic soda according to the liquid pressure in the circular pipe 1 conveniently, the spraying effect is good, the fixed water distribution plate 7 is fixedly connected between the two pull rods 6,
it should be further noted that the fixed water diversion plate 7 is fixedly connected with a vertical shaft 8, two semi-spiral grooves are formed in the installation pipe 4, a movable water diversion mechanism is installed in the two semi-spiral grooves and is rotatably connected with the vertical shaft 8, the movable water diversion mechanism comprises two connecting shafts 9, the two connecting shafts 9 are respectively connected with the two semi-spiral grooves, the two connecting shafts 9 are respectively connected with an arc-shaped scraper 10, so that the movable water diversion plate 11 is convenient to be stabilized relative to the installation pipe 4, the cleaning of the inner wall of the installation circular pipe 1 by the arc-shaped scraper 10 is convenient to realize when the injection quantity of the liquid caustic soda changes, the scaling quantity in the installation pipe 4 is less, the use and cleaning performance is better, the movable water diversion plate 11 is fixedly connected between the two arc-shaped scrapers 10, the movable water diversion plate 11 is rotatably connected with the vertical shaft 8, the movable water diversion plate 11 is convenient to rotate relative to the fixed water diversion plate, comparatively practical, positioning mechanism includes spacer 12 and two lower spacers 13 on two, spacer 12 all with 1 fixed connection of pipe on two, spacer 13 all with installation pipe 4 fixed connection under two, the connecting hole has all been seted up on spacer 12 on two, the connecting hole has all been seted up down on spacer 13 under two, be provided with fastening bolt 14 in the connecting hole in two, be convenient for stabilize the relative angle of interior ball cover 2 and outer ball cover 3, the angle between interior ball cover 2 and the outer ball cover 3 is easily controlled, stability in use is better.
It should be further noted that the water collecting ring 18 is fixedly connected to the installation pipe 4, so as to reduce the amount of sprayed liquid caustic soda flying out of the reaction tower along with air, and is more practical, the spring 19 is sleeved on the vertical shaft 8, and the spring 19 is positioned between the fixed water distribution plate 7 and the movable water distribution plate 11, so as to reduce the vibration between the fixed water distribution plate 7 and the movable water distribution plate 11, so that the vibration is smaller, the noise is smaller, and the reaction tower is more practical, the top end of the vertical shaft 8 is fixedly connected with the conical cap 20, so as to facilitate the distribution of liquid caustic soda, and is more practical, the pull ring 21 is fixedly connected to the bottom end of the fixed water distribution plate 7, so as to facilitate the pulling of the fixed water distribution plate 7, thereby facilitating the manual cleaning of the liquid caustic soda injection device used in the reaction tower, the pulling is more labor-saving, the practicability is better, the two scrapers 22 are fixedly connected to the arc scraper 10, the fastening bolt 14 is provided with the gasket 23, so that the fastening effect of the fastening bolt 14 is improved conveniently, the fastening bolt is reliable, the ring groove is formed in the flange plate 15, the sealing ring 24 is arranged in the ring groove, the connection sealing performance of the flange plate 15 during connection is facilitated, the sealing gasket 25 is arranged in the outer ball sleeve 3, the sealing effect between the inner ball sleeve 2 and the outer ball sleeve 3 is improved conveniently, liquid leakage is avoided easily, and the use is reliable.
In summary, the operating principle and the operating process of the liquid caustic soda injection device used in the reaction tower are that, when in use, the liquid caustic soda injection device used in the reaction tower is firstly fixedly installed on a liquid caustic soda pipe system in the reaction tower through a flange 15 or a threaded pipe 16, when the liquid caustic soda pipe system is connected through the flange 15, the threaded pipe 16 slides into the circular pipe 1 by rotating the flange 15 relative to the circular pipe 1, when the liquid caustic soda pipe system is connected through the threaded pipe 16, the flange 15 is rotated reversely relative to the circular pipe 1, the threaded pipe 16 extends out of the circular pipe 1 to realize the connection and communication with the liquid caustic soda pipe system, when the demand of liquid caustic soda in the reaction tower is large, the liquid caustic soda pressure in the liquid caustic soda pipe system is increased, the liquid caustic soda is dispersed through the circular pipe 1 via the fixed water diversion plate 7 and the movable water diversion plate 11, when the liquid caustic soda pressure is large, the speed of the liquid caustic soda passing through the circular pipe 1, make under the effect of liquid caustic soda impact force decide water diversion plate 7 and move water diversion plate 11 and overcome the pulling force of extension spring 5 and keep away from installation pipe 4 and remove, move water diversion plate 11 and keep away from the in-process that installation pipe 4 removed under the cooperation of half helical groove and connecting axle 9, realize two arc scraper blades 10 for the rotation of installation pipe 4, the rotation of water diversion plate 11 for vertical scroll 8 is moved in the realization simultaneously, thereby be convenient for the clearance of the dirt on the inside wall of installation pipe 4, be convenient for simultaneously reduce liquid caustic soda and spray resistance, improve the injection efficiency and the injection effect of liquid caustic soda, and is relatively practical.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A liquid caustic soda injection device for a reaction tower comprises a round pipe (1), and is characterized in that: the ball valve is characterized by further comprising an inner ball sleeve (2) and an outer ball sleeve (3), wherein a doubly-linked mechanism is installed on the circular tube (1), the inner ball sleeve (2) is fixedly connected with the circular tube (1), the inner ball sleeve (2) is communicated with the circular tube (1), the outer ball sleeve (3) is connected with the inner ball sleeve (2), the outer ball sleeve (3) is fixedly connected with an installation tube (4), the outer ball sleeve (3) is communicated with the installation tube (4), a positioning mechanism is fixedly connected between the installation tube (4) and the circular tube (1), two semicircular grooves are formed in the bottom end of the installation tube (4), circular hole grooves are formed in the two semicircular grooves, tension springs (5) are fixedly connected in the circular hole grooves, pull rods (6) are slidably connected in the two semicircular grooves, the pull rods (6) are fixedly connected with the tension springs (5), and a fixed water distribution plate (7) is fixedly connected between the two pull rods (6), the vertical shaft (8) is fixedly connected to the fixed water distribution plate (7), two semi-spiral grooves are formed in the installation pipe (4), movable water distribution mechanisms are installed in the two semi-spiral grooves, the movable water distribution mechanisms are rotatably connected with the vertical shaft (8), each movable water distribution mechanism comprises two connecting shafts (9), the two connecting shafts (9) are respectively connected with the two semi-spiral grooves, the two connecting shafts (9) are respectively connected with arc-shaped scrapers (10), a movable water distribution plate (11) is fixedly connected between the two arc-shaped scrapers (10), the movable water distribution plate (11) is rotatably connected with the vertical shaft (8), each positioning mechanism comprises two upper positioning pieces (12) and two lower positioning pieces (13), the two upper positioning pieces (12) are both fixedly connected with the circular pipe (1), and the two lower positioning pieces (13) are both fixedly connected with the installation pipe (4), the two upper positioning pieces (12) are provided with upper connecting holes, the two lower positioning pieces (13) are provided with lower connecting holes, and one connecting hole in each upper connecting hole is internally provided with a fastening bolt (14).
2. The liquid caustic soda injection apparatus for use in a reaction tower as claimed in claim 1, wherein: doubly link mechanism includes ring flange (15) and screwed pipe (16), ring flange (15) with pipe (1) rotates to be connected, has seted up a plurality of vertical grooves in pipe (1), and is a plurality of equal sliding connection has vertical strip (17), and is a plurality of in the vertical groove vertical strip (17) all with screwed pipe (16) fixed connection, ring flange (15) and screwed pipe (16) threaded connection.
3. The liquid caustic soda injection apparatus for use in a reaction tower according to claim 2, wherein: and a water collecting ring (18) is fixedly connected to the mounting pipe (4).
4. The liquid caustic soda injection apparatus for use in a reaction tower according to claim 3, wherein: the vertical shaft (8) is sleeved with a spring (19), and the spring (19) is positioned between the fixed water distribution plate (7) and the movable water distribution plate (11).
5. The liquid caustic soda injection apparatus for use in a reaction tower according to claim 4, wherein: the top end of the vertical shaft (8) is fixedly connected with a conical cap (20).
6. The liquid caustic soda injection apparatus for use in a reaction tower according to claim 5, wherein: the bottom end of the fixed water distribution plate (7) is fixedly connected with a pull ring (21).
7. The liquid caustic soda injection apparatus for use in a reaction tower according to claim 6, wherein: two scrapers (22) are fixedly connected to the arc-shaped scraper (10).
8. The liquid caustic soda injection apparatus for use in a reaction tower as claimed in claim 7, wherein: and a washer (23) is arranged on the fastening bolt (14).
9. The liquid caustic soda injection apparatus for use in a reaction tower as claimed in claim 8, wherein: an annular groove is formed in the flange plate (15), and a sealing ring (24) is arranged in the annular groove.
10. The liquid caustic soda injection apparatus for use in a reaction tower as claimed in claim 9, wherein: and a sealing gasket (25) is arranged in the outer ball sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007356.8A CN112827430B (en) | 2021-01-05 | 2021-01-05 | Liquid alkali spraying device used in reaction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007356.8A CN112827430B (en) | 2021-01-05 | 2021-01-05 | Liquid alkali spraying device used in reaction tower |
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| Publication Number | Publication Date |
|---|---|
| CN112827430A true CN112827430A (en) | 2021-05-25 |
| CN112827430B CN112827430B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110007356.8A Active CN112827430B (en) | 2021-01-05 | 2021-01-05 | Liquid alkali spraying device used in reaction tower |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864241A (en) * | 1957-06-28 | 1961-03-29 | Lewis Dwight Funk | An injector assembly for injecting a liquid fertilizer into an irrigation system |
| DE3637060A1 (en) * | 1986-10-31 | 1988-05-05 | Wacker Chemie Gmbh | Device for spraying or injecting liquid into a container and use thereof |
| CN203431338U (en) * | 2013-07-09 | 2014-02-12 | 芜湖市金贸流体科技股份有限公司 | Conversion connector for connection between flange and threaded pipe |
| CN207609609U (en) * | 2017-11-23 | 2018-07-13 | 青岛华宏达电气有限公司 | A kind of fan inlet is taken over |
| CN208976123U (en) * | 2018-10-08 | 2019-06-14 | 焦作市源波环保科技有限公司 | A kind of novel polymeric ferric sulfate production atomizer |
| CN211706717U (en) * | 2019-11-19 | 2020-10-20 | 上海继尔新材料科技有限公司 | Polyethylene comonomer feeding device in polyethylene production |
| CN111998721A (en) * | 2020-09-09 | 2020-11-27 | 张彩丽 | Flushing method of heat exchange tube assembly |
-
2021
- 2021-01-05 CN CN202110007356.8A patent/CN112827430B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864241A (en) * | 1957-06-28 | 1961-03-29 | Lewis Dwight Funk | An injector assembly for injecting a liquid fertilizer into an irrigation system |
| DE3637060A1 (en) * | 1986-10-31 | 1988-05-05 | Wacker Chemie Gmbh | Device for spraying or injecting liquid into a container and use thereof |
| CN203431338U (en) * | 2013-07-09 | 2014-02-12 | 芜湖市金贸流体科技股份有限公司 | Conversion connector for connection between flange and threaded pipe |
| CN207609609U (en) * | 2017-11-23 | 2018-07-13 | 青岛华宏达电气有限公司 | A kind of fan inlet is taken over |
| CN208976123U (en) * | 2018-10-08 | 2019-06-14 | 焦作市源波环保科技有限公司 | A kind of novel polymeric ferric sulfate production atomizer |
| CN211706717U (en) * | 2019-11-19 | 2020-10-20 | 上海继尔新材料科技有限公司 | Polyethylene comonomer feeding device in polyethylene production |
| CN111998721A (en) * | 2020-09-09 | 2020-11-27 | 张彩丽 | Flushing method of heat exchange tube assembly |
Non-Patent Citations (1)
| Title |
|---|
| 《机械设计手册》联合编写组: "《机械设计手册 中册 第二版(修订)》", 31 October 1982, 化学工业出版社, pages: 174 * |
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| CN112827430B (en) | 2023-04-21 |
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