CN105443358A - Air compressor with air inlet control function and air channel check function - Google Patents
Air compressor with air inlet control function and air channel check function Download PDFInfo
- Publication number
- CN105443358A CN105443358A CN201511015231.0A CN201511015231A CN105443358A CN 105443358 A CN105443358 A CN 105443358A CN 201511015231 A CN201511015231 A CN 201511015231A CN 105443358 A CN105443358 A CN 105443358A
- Authority
- CN
- China
- Prior art keywords
- air
- piston
- valve body
- compressor
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The invention particularly relates to an air compressor with the air inlet control function and the air channel check function. The air compressor comprises a compressor body, a piston type air inlet control valve is arranged at the air inlet end of the compressor body, and an air channel check valve is arranged at the air outlet end of the compressor body. The air compressor has the beneficial effects that a piston is used for closing or opening an air suction port, the air inflow can be feedback and controlled, and leakage can be prevented; a valve core on an air suction valve end cover is used for pushing the piston, then the piston can be in a vacuum closed state, and the air suction port cannot be opened; a spring is effectively fixed through a spring installation cavity, and therefore the elastic force of the spring can be uniformly distributed on the piston, and the piston can be driven to be reset easily; compressed air can be gathered easily through a piston cavity in the piston, and therefore the piston can be driven to move in the piston cavity better; a one-way valve body is used for closure, the compressed air in an air storage tank is effectively prevented from flowing back to the compressor body, and therefore the energy consumption of the compressor body is lowered, and the energy is saved.
Description
Technical field
The present invention relates to a kind of air compressor technical field, specifically a kind of air compressor with air inlet control and gas circuit check function.
Background technique
Existing down-the-hole drill adopts air compressor to provide contractive pressure air, during rock drilling, impactor slips in hole, by the pressurized air that air compressor produces, bit shank is hit in piston (hammer body) to-and-fro motion ordered about in impactor, drill bit is produced hole bed rock stone and impacts realization boring.
There is following problem in air compressor: the air pressure 1, in gas holder reaches setting value in actual use, still continues to provide pressurized air, easily can produce the pressure release because of overpressure, the loss that produce power is unnecessary; In addition, the suction port of existing air compressor compressor head does not have design con-trol tolerance device, then cannot provide the air quantity that air compressor is required under different operating modes; 2, when air compressor quits work, the pressurized air in gas holder and in conveyance conduit can produce refluence, makes the energy consumption of compressor increase.
Down-the-hole drill industry wishes to improve air compressor further, thus promotes air compressor usability, reduces energy ezpenditure further.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of air compressor with air inlet control and gas circuit check function, air inflow, Leakage prevention can be controlled and effectively prevent the pressurized air in gas holder from flowing back on compressor, thus reduce the energy consumption of compressor, play energy-conservation object.
A kind of air compressor with air inlet control and gas circuit check function that the present invention describes, comprise compressor, wherein the inlet end of compressor is provided with piston type air intake control valve, the outlet side of compressor is provided with gas circuit safety check, piston type air intake control valve comprises Aspirating valves end cap and intake valve body, Aspirating valves end cap is placed on intake valve body, Aspirating valves end cap is provided with spring and intakeport, piston cavity and air supply opening is provided with in intake valve body, piston cavity is between intakeport and air supply opening, the piston for closing or open intakeport is provided with in piston cavity, spring one end extends on piston, intake valve body is provided with the second air input joint, second air input joint is connected with piston cavity, gas circuit safety check comprises flanged pipe and Oil/Gas Pipe, wherein be provided with check valve body between flanged pipe and Oil/Gas Pipe, be provided with for being shifted up and down in check valve body and implementing to be sealed or to open the sheet packing of Oil/Gas Pipe outlet side in check valve body, interior snap ring is provided with above sheet packing, interior snap ring is fixed on inwall, the inner wall surface of check valve body is provided with gas guide groove.
In addition, a kind of air compressor with air inlet control and gas circuit check function according to the present invention also has following additional technical feature, according to some embodiments of the present invention, specifically further, described intakeport place is provided with interior fixture block, and the described spring the other end is connected with interior fixture block.
Further concrete, described interior fixture block place is provided with end cap setting-in portion, and described spring one end is placed in end cap setting-in portion.
Further concrete, described Aspirating valves end cap is provided with spool and promotes air flue, and spool promotes to be provided with spool in air flue.
Further concrete, the entry end that described spool promotes air flue is provided with the first air input joint.
Further concrete, described spool peaks in the front-end surface of piston.
Further concrete, the front-end surface of described piston is provided with Piston bowl.
Further concrete, the rear end surface of described piston is provided with spring fitting chamber, and the other end of spring is placed in installation cavity.
Further concrete, have check valve body cushion cap in described check valve body, have the diameter of sheet packing described in through hole in the middle part of check valve body cushion cap and be more than or equal to the diameter of through hole, described check valve body in a tubular form.
Further concrete, the upper face of described check valve body is provided with annular groove, flanged pipe is provided with pipe clamp, one end of pipe clamp is placed in annular groove, check valve body be connected with flanged pipe, described Oil/Gas Pipe is provided with oil gas end cap, and the top end of check valve body is provided with valve body end cap, be connected by screw rod between valve body end cap with oil gas end cap, and check valve body is fixed on Oil/Gas Pipe.
The invention has the beneficial effects as follows: 1, utilize piston to realize closing or opening intakeport, play the effect controlling air inflow and Leakage prevention; 2, utilize the spool on Aspirating valves end cap to push piston open, play preventing from piston to be in vacuum closing state, and intakeport cannot be opened; 3, utilize the effective fixing spring in spring fitting chamber, make the elastic force of spring be uniformly distributed on piston, be conducive to promoting piston reset; 4, the Piston bowl on piston is conducive to assembling pressurized air, makes to promote piston better and moves in piston cavity; 5, utilize check valve body to dam, effectively prevent the pressurized air in gas holder from flowing back on compressor, and reduce the energy consumption of compressor, play energy-conservation object.
Accompanying drawing explanation
Fig. 1 is the structural representation of using state of the present invention.
Fig. 2 is the structural representation of piston type air intake control valve.
Fig. 3 is that structure for amplifying schematic diagram is analysed and observe at the A-A place of Fig. 2.
Fig. 4 is the structural representation of Aspirating valves end cap.
Fig. 5 is the structural representation of gas circuit safety check.
Fig. 6 is that structure for amplifying schematic diagram is analysed and observe at the B-B place of Fig. 5.
Fig. 7 is the C place partial enlargement structural representation of Fig. 6.
The icon of the following drawings illustrates:
Piston type air intake control valve 1;
Aspirating valves end cap 11; Intakeport 1101; Interior fixture block 1102; Spool 1103; First air input joint 1104; End cap setting-in portion 1105; Intake valve body 12; Air supply opening 1201; Piston cavity 1202; Second air input joint 1203; Spring 13; Piston 14; Piston bowl 1401; Spring fitting chamber 1402;
Gas circuit safety check 2;
Flanged pipe 21; Oil/Gas Pipe 22; Oil gas end cap 2201; Check valve body 23; Sheet packing 2301; Check valve body cushion cap 2302; Interior snap ring 2303; Gas guide groove 2304; Valve body end cap 2305;
Compressor 3.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figures 1 to 7, a kind of air compressor with air inlet control and gas circuit check function that the present invention describes, comprise compressor 3, wherein the inlet end of compressor 3 is provided with piston type air intake control valve 1, the outlet side of compressor 3 is provided with gas circuit safety check 2, compressor 3 enters air by piston type air intake control valve 1, through compressor 3, air compressing is output into pressurized air, input gas holder from gas circuit safety check 2, gas holder storing compressed air, Deng to be supplied on impactor or other gas circuit use, structure of the present invention is improved for piston type air intake control valve 1 and gas circuit safety check 2 respectively, such as the improvement of piston type air intake control valve 1 is as follows: piston type air intake control valve 1 comprises Aspirating valves end cap 11 and intake valve body 12, Aspirating valves end cap 11 is placed on intake valve body 12, Aspirating valves end cap 11 is provided with spring 13 and intakeport 1101, piston cavity 1202 and air supply opening 1201 is provided with in intake valve body 12, piston cavity 1202 is between intakeport 1101 and air supply opening 1201, the piston 14 for closing or open intakeport 1101 is provided with in piston cavity 1202, spring 13 one end extends on piston 14, intake valve body 12 is provided with the second air input joint 1203, second air input joint 1203 is connected with piston cavity 1202.The pressurized air wherein provided by compressor 3 is promoted piston 14 and moves, and realizes closing intakeport, plays the effect controlling air inflow and Leakage prevention; When the pressurized air in gas holder consumes certain value, compressor 3 stops pressurized air being input in piston cavity 1202, under the effect of spring 13, promotes piston 14 and resets, reenter the inlet end place of air to compressor 3.In addition, the present invention also improves gas circuit safety check 2, specific as follows: gas circuit safety check 2 comprises flanged pipe 21 and Oil/Gas Pipe 22, wherein be provided with check valve body 23 between flanged pipe 21 and Oil/Gas Pipe 22, be provided with for being shifted up and down in check valve body 23 and implementing to be sealed or to open the sheet packing 2301 of Oil/Gas Pipe 22 outlet side in check valve body 23, be provided with interior snap ring 2303 above sheet packing 2301, interior snap ring 2303 is fixed on inwall, and the inner wall surface of check valve body 23 is provided with gas guide groove 2304.Wherein utilize check valve body to dam, effectively prevent the pressurized air in gas holder from flowing back on compressor 3, and reduce the energy consumption of compressor 3, play energy-conservation object.Particularly, utilize sheet packing 2301 when pressurized air refluxes, promote sheet packing 2301 and be shifted and be sealed Oil/Gas Pipe 22 outlet side, play the effect of damming.Moreover when compressor 3 is restarted, compressor 3 output squeezing air, the sheet packing 2301 promoted in check valve body 23 leaves surface, Oil/Gas Pipe 22 outlet side, makes flanged pipe 21 and Oil/Gas Pipe 22 conducting again.
In addition, according to a kind of air compressor with air inlet control and gas circuit check function of the present invention, also there is following additional technical feature, according to some embodiments of the present invention, such as shown in Fig. 2, Fig. 3 and Fig. 4, specifically further, described intakeport 1101 place is provided with interior fixture block 1102, described spring 13 the other end is connected with interior fixture block 1102, for fixing spring 13.This structure is shifted to prevent spring 13 one end, and interior fixture block 1102 place is provided with end cap setting-in portion 1105, and described spring 13 one end is placed in end cap setting-in portion 1105, plays restriction.
Further concrete, Aspirating valves end cap 1 is provided with spool and promotes air flue, spool promotes to be provided with spool 1103 in air flue, the entry end that spool promotes air flue is provided with the first air input joint 1104, spool 1103 peaks in the front-end surface of piston 14, spool 1103 wherein on Aspirating valves end cap 1, for pushing piston 14 open, plays preventing from piston to be in vacuum closing state, and cannot open the problems such as intakeport.
Further concrete, the front-end surface of described piston 14 is provided with Piston bowl 1401, is conducive to assembling pressurized air, makes to promote piston 14 better mobile in piston cavity 1202.
Further concrete, the rear end surface of described piston 14 is provided with spring fitting chamber 1402, and the other end of spring 13 is placed in installation cavity 1402, wherein utilizes the other end of the effective fixing spring in spring fitting chamber 1402, make the elastic force of spring be uniformly distributed on piston, be conducive to promoting piston reset.
Such as shown in Fig. 5, Fig. 6 and Fig. 7, part is improved as follows in addition: specifically further for gas circuit safety check 2, have check valve body cushion cap 2302 in described check valve body 23, have through hole in the middle part of check valve body cushion cap 2302, wherein check valve body cushion cap 2302 allows and better bears and be convenient to be sealed through hole.Wherein the diameter of sheet packing 2301 is more than or equal to the diameter of through hole, effectively promotes tightness.
Connection between check valve body 23 and flanged pipe 21 can take following mode of structure: specifically further, the upper face of check valve body 23 is provided with annular groove, flanged pipe 21 is provided with pipe clamp, one end of pipe clamp is placed in annular groove, check valve body 23 is connected with flanged pipe 21, plays the effect of firmly connection and be convenient to daily dismounting and maintenance.
Further concrete, Oil/Gas Pipe 22 is provided with oil gas end cap 2201, the top end of check valve body 23 is provided with valve body end cap 2305, be connected by screw rod between valve body end cap 2305 with oil gas end cap 2201, and check valve body 23 is fixed on Oil/Gas Pipe 22, play and facilitate fixed valve body end cap 2305 and check valve body 23, in addition, also between valve body end cap 2305 and check valve body 23, be provided with sealing density ring, the tightness between poppet body end cap 2305 and check valve body 23.The shape of check valve body 23 of the present invention is preferably as follows: specifically further, check valve body 23 in a tubular form, is convenient to processing or the buying of manufacturing enterprise.
On be only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent to replace or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind has the air compressor of air inlet control and gas circuit check function, comprise compressor (3), it is characterized in that: the inlet end of compressor (3) is provided with piston type air intake control valve (1), the outlet side of compressor (3) is provided with gas circuit safety check (2), piston type air intake control valve comprises Aspirating valves end cap (11) and intake valve body (12), Aspirating valves end cap (11) is placed on intake valve body (12), Aspirating valves end cap (11) is provided with spring (13) and intakeport (1101), piston cavity (1202) and air supply opening (1201) is provided with in intake valve body (12), piston cavity (1202) is positioned between intakeport (1101) and air supply opening (1201), the piston (14) for closing or open intakeport (1101) is provided with in piston cavity (1202), spring (13) one end extends on piston (14), intake valve body (12) is provided with the second air input joint (1203), second air input joint (1203) is connected with piston cavity (1202), gas circuit safety check (2) comprises flanged pipe (21) and Oil/Gas Pipe (22), check valve body (23) is provided with between flanged pipe (21) and Oil/Gas Pipe (22), be provided with for being shifted up and down in check valve body (23) and implementing to be sealed or to open the sheet packing (2301) of Oil/Gas Pipe (22) outlet side in check valve body (23), sheet packing (2301) top is provided with interior snap ring (2303), on the fixing inwall of interior snap ring (2303), the inner wall surface of check valve body (23) is provided with gas guide groove (2304).
2. a kind of air compressor with air inlet control and gas circuit check function according to claim 1, it is characterized in that: described intakeport (1101) place is provided with interior fixture block (1102), described spring (13) the other end is connected with interior fixture block (1102).
3. a kind of air compressor with air inlet control and gas circuit check function according to claim 2, it is characterized in that: described interior fixture block (1102) place is provided with end cap setting-in portion (1105), and described spring (13) one end is placed in end cap setting-in portion (1105).
4. a kind of air compressor with air inlet control and gas circuit check function according to claim 1, is characterized in that: described Aspirating valves end cap (11) is provided with spool and promotes air flue, and spool promotes to be provided with spool (1103) in air flue.
5. a kind of air compressor with air inlet control and gas circuit check function according to claim 4, is characterized in that: the entry end that described spool promotes air flue is provided with the first air input joint (1104).
6. a kind of air compressor with air inlet control and gas circuit check function according to claim 4, is characterized in that: described spool (1103) peaks in the front-end surface of piston (14).
7. a kind of air compressor with air inlet control and gas circuit check function according to claim 1, is characterized in that: the front-end surface of described piston (14) is provided with Piston bowl (1401).
8. a kind of air compressor with air inlet control and gas circuit check function according to claim 1, it is characterized in that: the rear end surface of described piston (14) is provided with spring fitting chamber (1402), the other end of spring (13) is placed in installation cavity (1402).
9. a kind of air compressor with air inlet control and gas circuit check function according to claim 1, it is characterized in that: in described check valve body (23), have check valve body cushion cap (2302), check valve body cushion cap (2302) middle part has through hole, in a tubular form, the diameter of described sheet packing (2301) is more than or equal to the diameter of through hole to check valve body (23).
10. a kind of air compressor with air inlet control and gas circuit check function according to claim 9, it is characterized in that: the upper face of described check valve body (23) is provided with annular groove, flanged pipe (21) is provided with pipe clamp, one end of pipe clamp is placed in annular groove, check valve body (23) is connected with flanged pipe (21), described Oil/Gas Pipe (22) is provided with oil gas end cap (2201), the top end of check valve body (23) is provided with valve body end cap (2305), be connected by screw rod between valve body end cap (2305) with oil gas end cap (2201), and check valve body (23) is fixed on Oil/Gas Pipe (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015231.0A CN105443358B (en) | 2015-12-31 | 2015-12-31 | A kind of air compressor machine with air inlet control and gas circuit check function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015231.0A CN105443358B (en) | 2015-12-31 | 2015-12-31 | A kind of air compressor machine with air inlet control and gas circuit check function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105443358A true CN105443358A (en) | 2016-03-30 |
| CN105443358B CN105443358B (en) | 2017-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511015231.0A Active CN105443358B (en) | 2015-12-31 | 2015-12-31 | A kind of air compressor machine with air inlet control and gas circuit check function |
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| Country | Link |
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| CN (1) | CN105443358B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628125A (en) * | 2019-09-24 | 2021-04-09 | 周文三 | Non-return joint structure combining tyre air tap and air compressor hose |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788776A (en) * | 1972-08-10 | 1974-01-29 | Gardner Denver Co | Compressor unloading control |
| GB1512332A (en) * | 1975-05-07 | 1978-06-01 | Linde Ag | Oil-cooled compressors |
| US20040213679A1 (en) * | 2003-04-22 | 2004-10-28 | R. Conrader Company | Air compressor with inlet control mechanism and automatic inlet control mechanism |
| CN201013559Y (en) * | 2007-03-19 | 2008-01-30 | 上海斯可络压缩机有限公司 | Air-intake lifting valve |
| CN201934282U (en) * | 2010-12-30 | 2011-08-17 | 浙江劳士顿焊接设备有限公司 | Self-controlled constant pressure air compressor |
| JP2014196718A (en) * | 2013-03-29 | 2014-10-16 | 北越工業株式会社 | Compressor air intake portion structure |
| CN205260267U (en) * | 2015-12-31 | 2016-05-25 | 广东顺德孔山重工机械有限公司 | Air compressor machine with air admits air and controls and gas circuit non return function |
-
2015
- 2015-12-31 CN CN201511015231.0A patent/CN105443358B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788776A (en) * | 1972-08-10 | 1974-01-29 | Gardner Denver Co | Compressor unloading control |
| GB1512332A (en) * | 1975-05-07 | 1978-06-01 | Linde Ag | Oil-cooled compressors |
| US20040213679A1 (en) * | 2003-04-22 | 2004-10-28 | R. Conrader Company | Air compressor with inlet control mechanism and automatic inlet control mechanism |
| CN201013559Y (en) * | 2007-03-19 | 2008-01-30 | 上海斯可络压缩机有限公司 | Air-intake lifting valve |
| CN201934282U (en) * | 2010-12-30 | 2011-08-17 | 浙江劳士顿焊接设备有限公司 | Self-controlled constant pressure air compressor |
| JP2014196718A (en) * | 2013-03-29 | 2014-10-16 | 北越工業株式会社 | Compressor air intake portion structure |
| CN205260267U (en) * | 2015-12-31 | 2016-05-25 | 广东顺德孔山重工机械有限公司 | Air compressor machine with air admits air and controls and gas circuit non return function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628125A (en) * | 2019-09-24 | 2021-04-09 | 周文三 | Non-return joint structure combining tyre air tap and air compressor hose |
| CN112628125B (en) * | 2019-09-24 | 2022-07-22 | 周文三 | Non-return joint structure combining tire air nozzle and air compressor hose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105443358B (en) | 2017-11-14 |
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Address after: 528322 No. 3-1-2, Fu'an Industrial Zone, leliulian Du Village, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong Kongshan Heavy Industry Machinery Co.,Ltd. Address before: 528322 No. 3-1-2, Fu'an Industrial Zone, leliulian Du Village, Shunde District, Foshan City, Guangdong Province Patentee before: GUANGDONG SHUNDE KOSAN HEAVY INDUSTRY MACHINERY CO.,LTD. |
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Effective date of registration: 20230619 Address after: No. 68, Zheda Road, Jianchi Street, Longquan City, Lishui City, Zhejiang Province 323700 Patentee after: Zhejiang Kongshan Heavy Industry Machinery Co.,Ltd. Address before: 528322 No. 3-1-2, Fu'an Industrial Zone, leliulian Du Village, Shunde District, Foshan City, Guangdong Province Patentee before: Guangdong Kongshan Heavy Industry Machinery Co.,Ltd. |
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Denomination of invention: An air compressor with air intake control and air circuit check function Effective date of registration: 20231101 Granted publication date: 20171114 Pledgee: Longquan Branch of China Construction Bank Co.,Ltd. Pledgor: Zhejiang Kongshan Heavy Industry Machinery Co.,Ltd. Registration number: Y2023980063343 |
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