CN113350876B - Bypass microcirculation online super-purification equipment and manufacturing method thereof - Google Patents
Bypass microcirculation online super-purification equipment and manufacturing method thereof Download PDFInfo
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- CN113350876B CN113350876B CN202110702166.8A CN202110702166A CN113350876B CN 113350876 B CN113350876 B CN 113350876B CN 202110702166 A CN202110702166 A CN 202110702166A CN 113350876 B CN113350876 B CN 113350876B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0083—Lubricating greases
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Abstract
The invention discloses bypass microcirculation on-line super-cleaning equipment and a manufacturing method thereof, and the equipment comprises a case; the filter is characterized by also comprising a detachable filter element structure which is arranged in the filter mechanism in a sliding way; the filter core structure contains the screw rod and wears the filter core on the screw rod, the filter core contains a plurality of filter core boards, the filter core board both sides all are equipped with a plurality of dirty grooves of receiving, receive on the adjacent filter core board when the filter core board stacks dirty groove and become crisscross stack, the filter core board adopts the suppression of kapok fibre to form. The filter element structure is arranged in a detachable manner and is slidably arranged in the filter mechanism, so that the filter element structure is convenient to disassemble, assemble and replace; the filter element is formed by overlapping a plurality of filter element plates in a staggered manner, and the two sides of each filter element plate are respectively provided with a dirt accommodating groove, so that the dirt accommodating amount of the filter element is increased and the service life is prolonged through the staggered overlapping; the filter core plate is formed by pressing kapok fibers, so that the filtering adsorption capacity is improved, and the purification effect is enhanced.
Description
Technical Field
The invention relates to purification equipment, in particular to bypass microcirculation online ultra-purification equipment and a manufacturing method thereof.
Background
Lubricating oil is inevitably polluted by various impurities, dust, moisture, gas, abrasive particles, microorganisms, oxides and the like generated in the environment and in the system work in the actual operation process of an oil station, so that the lubricating oil is degraded, the oxidation is accelerated, the performance is reduced and the like; resulting in wear and damage, corrosion, and rusting of the surfaces of lubricated parts, resulting in failure of equipment lubrication systems and components.
In the prior art, an oil filtering mechanism is connected in a lubricating oil station, lubricating oil is filtered and adsorbed by the oil filtering mechanism, but a filter element in a general oil filtering machine has poor filtering effect, cannot filter fine impurities, and has poor water absorption, so that more water in the lubricating oil is left, the dirt holding capacity of the general filter element is small, the general filter element cannot work for a long time, frequent replacement and maintenance are needed, the replacement is troublesome, and much workload is increased and troublesome; therefore, the invention provides bypass microcirculation online super-purification equipment and a manufacturing method thereof.
Disclosure of Invention
The invention aims to solve the problems and provides bypass microcirculation online super-purification equipment and a manufacturing method thereof.
In order to achieve the aim, the invention provides the following technical scheme that the bypass microcirculation online super-cleaning equipment comprises a case, an oil pump arranged in the case and a filtering mechanism arranged in the case and connected with the oil pump through a pipeline; the filter is characterized by also comprising a detachable filter element structure which is arranged in the filter mechanism in a sliding way; the filter element structure comprises a screw rod and a filter element penetrating through the screw rod, the filter element comprises a plurality of filter element plates, a plurality of dirt containing grooves are formed in the two sides of each filter element plate, the dirt containing grooves in the adjacent filter element plates are overlapped in a staggered mode when the filter element plates are overlapped, and the filter element plates are formed by pressing kapok fibers; the filter element structure is arranged on the valve block in a sliding manner and is positioned in the shell; the valve block is provided with an oil outlet pipe and an oil return pipe which are connected with the oil pump, and a sewage discharge pipe arranged at the bottom of the valve block; an oil inlet cavity communicated with the oil outlet pipe and an oil outlet cavity communicated with the sewage discharge pipe and the oil return pipe are arranged on the valve block; the valve block is also provided with a sliding groove.
Preferably, the filter element structure comprises a screw, an upper end plate, a partition plate, a lower end plate and filter elements, wherein the upper end plate, the partition plate and the lower end plate are arranged on the screw, and the filter elements are arranged between the upper end plate and the partition plate and between the partition plate and the lower end plate; the lower end plate is provided with a sliding block matched with the sliding groove; and an oil inlet hole communicated with the oil inlet cavity is formed in the lower end plate.
Further preferably, the sliding groove and the sliding block are in an inverted T shape.
Further preferably, the filtering mechanism comprises a valve block installed in the chassis, a housing and a top cover installed on the housing; the valve block is fixedly arranged in the case through bolts; the filter element structure also comprises a lower end plate fixedly arranged at the bottom of the shell and movably connected with the screw rod, a separation plate movably arranged on the screw rod and an upper end plate; and the lower end plate is fixedly connected with the valve block through bolts.
Preferably, the upper end plate, the lower end plate and the partition plate are provided with a plurality of protrusions, and the partition plate and the lower end plate are provided with a plurality of oil through holes.
Preferably, the housing is also movably provided with a flip cover, one end of the flip cover is movably connected with the housing through a hinge, and the other end of the flip cover is fixedly connected with the housing through a bolt; the top of the shell is also provided with a safety valve; still be equipped with seal assembly on shell and the flip, seal assembly contains sets up on shell and flip and each other is mutually supporting seal block and seal groove, install the sealing washer in the seal groove.
Preferably, the case comprises a framework and a cover plate arranged on the framework, and the cover plate is movably provided with a plurality of fixing buckles; the framework is also provided with a plurality of lifting rings; the case is also provided with a pressure gauge connected with the filtering mechanism through a pipeline; and the bottom of the case is also provided with rollers.
A manufacturing method of bypass microcirculation online super-purification equipment is characterized by comprising the following steps: the preparation method comprises the following steps:
the first step is as follows: assembling the filter element structure; firstly, overlapping a plurality of pressed filter core plates on a screw rod in a staggered manner and fixing the filter core plates through an upper end plate, a partition plate and a lower end plate;
the second step is that: installing a filter element structure; installing the assembled filter element structure into the shell and connecting the assembled filter element structure with the valve block;
the third step: fixing the filter element structure; fixedly connecting the flip cover and the shell or the top cover and the shell through bolts;
the fourth step: installing a cover plate: the cover plate is fixedly installed on the framework through the fixing buckles, and installation is completed.
The purification equipment is arranged to purify the lubricating oil in the lubricating oil station, so that particle impurities in the lubricating oil are intercepted, water in the lubricating oil is absorbed, oxides in the lubricating oil are adsorbed, and the lubricating oil always keeps good performance parameters; the filter element structure is arranged in a detachable manner and is slidably arranged in the filter mechanism, so that the filter element structure is convenient to disassemble, assemble and replace; the filter element is formed by overlapping a plurality of filter element plates in a staggered manner, and the two sides of each filter element plate are respectively provided with a dirt accommodating groove, so that the dirt accommodating amount of the filter element is increased and the service life is prolonged through the staggered overlapping; the filter core plate is formed by pressing kapok fibers, so that the filtering adsorption capacity is improved, and the purification effect is enhanced.
Drawings
FIG. 1 is a schematic view of a portion of the structure of the present invention;
FIG. 2 is a schematic diagram of a filter structure according to the present invention;
FIG. 3 is a schematic view of a filter structure and a filter element structure according to the present invention;
FIG. 4 is a schematic view of a part of the enlarged structure at A in the present invention;
FIG. 5 is a schematic view of a part of the enlarged structure of the present invention at B;
FIG. 6 is a schematic illustration of a cartridge panel construction of the present invention;
FIG. 7 is a schematic view of a retaining buckle according to the present invention;
FIG. 8 is a schematic sectional view showing the structure of example 2 of the present invention;
FIG. 9 is a partial structural view of embodiment 3 of the present invention.
Illustration of the drawings: 1. a chassis; 11. a framework; 12. a cover plate; 13. a fixing buckle; 14. a hoisting ring; 15. a pressure gauge; 16. a roller; 2. an oil pump; 3. a filtering mechanism; 31. a housing; 32. a valve block; 33. an oil outlet pipe; 34. an oil return pipe; 35. a blow-off pipe; 36. an oil inlet cavity; 37. an oil outlet cavity; 38. a chute; 39. a cover is turned; 310. a safety valve; 311. a top cover; 4. a filter element structure; 41. a screw; 42. a filter element; 43. a filter element plate; 44. a sewage containing tank; 45. an upper end plate; 46. a partition plate; 47. a lower end plate; 48. a slider; 49. a protrusion; 410. an oil through hole; 411. an oil inlet hole; 5. a seal assembly; 51. a sealing groove; 52. a sealing block; 53. and (5) sealing rings.
Detailed Description
The bypass microcirculation online super-cleaning device and the manufacturing method thereof according to the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-3 and fig. 6, the bypass microcirculation online super-cleaning apparatus of the present embodiment includes a case 1, an oil pump 2 installed in the case 1, and a filtering mechanism 3 installed in the case 1 and connected to the oil pump 2 through a pipeline; the filter is characterized by also comprising a detachable filter element structure 4 which is arranged in the filter mechanism 3 in a sliding way; the filter element structure 4 comprises a screw rod 41 and a filter element 42 penetrating through the screw rod 41, the filter element 42 comprises a plurality of filter element plates 43, a plurality of dirt receiving grooves 44 are formed in two sides of each filter element plate 43, when the filter element plates 43 are overlapped, the dirt receiving grooves 44 in the adjacent filter element plates 43 are overlapped in a staggered mode, and the filter element plates 43 are formed by pressing kapok fibers; the lubricating oil in the lubricating oil station is purified through the arrangement of the purifying equipment, so that particle impurities in the lubricating oil are intercepted, moisture in the lubricating oil is absorbed, oxides in the lubricating oil are adsorbed, and the lubricating oil is enabled to keep good performance parameters all the time; the filter element structure 4 is arranged and is arranged in the filter mechanism 3 in a sliding way, so that the filter element structure is convenient to disassemble, assemble and replace; the filter element 42 is formed by overlapping a plurality of filter element plates 43 in a staggered manner, and the two sides of each filter element plate 43 are respectively provided with a dirt accommodating groove 44, so that the dirt accommodating grooves 44 are useless in order to avoid the matching of the dirt accommodating grooves 44 of the adjacent filter element plates 43; the arrangement of the dirt containing groove 44 improves the dirt containing capacity of the filter element 42, thereby prolonging the service life; the filter element plate 43 is formed by compressing kapok fiber, can intercept particle impurities which cannot be removed by a filter on a lubricating oil station and are less than or equal to 10 mu m, absorb water in the lubricating oil and adsorb oxides generated in the using process of the lubricating oil; the filter mechanism 3 comprises a shell 31 installed in the cabinet 1, a valve block 32 installed at the bottom of the shell 31 and partially located in the shell 31, and the filter element structure 4 is slidably installed on the valve block 32 and located in the shell 31; the valve block 32 is arranged at the bottom of the shell 31, part of the valve block is positioned in the shell 31, and the valve block positioned in the shell 31 is fixedly connected with the filter element structure 4, wherein the valve block is used for communicating an oil path and has a fixing and supporting effect on the filter element structure 4; the valve block 32 is provided with an oil outlet pipe 33 connected with the oil pump 2, an oil return pipe 34 and a sewage discharge pipe 35 arranged at the bottom of the valve block 32; an oil inlet cavity 36 communicated with the oil outlet pipe 33 and an oil outlet cavity 37 communicated with the sewage discharge pipe 35 and the oil return pipe 34 are arranged on the valve block 32; the valve block 32 is also provided with a slide groove 38.
Further, referring to fig. 3 to 5, the filter element arrangement 4 includes a screw 41, an upper end plate 45 mounted on the screw 41, a partition plate 46, a lower end plate 47, and a filter element 42 mounted between the upper end plate 45 and the partition plate 46 and between the partition plate 46 and the lower end plate 47; the lower end plate 47 is provided with a slide block 48 matched with the slide groove 38; an oil inlet 411 communicated with the oil inlet cavity 36 is formed in the lower end plate 47; through the arrangement and the matching of the sliding groove 38 and the sliding block 48, the disassembly and the assembly are convenient; through the arrangement of the drain pipe 35, the filter mechanism 3 can be cleaned when the filter element 42 is replaced, the cleaned impurities are discharged through the drain pipe 35, and the drain pipe 35 is in a closed state during normal use; the upper end plate 45, the separation plate 46 and the lower end plate 47 are arranged for tightly pressing the filter element 42 and fixing the filter element 42; through the setting of division board 46, avoid leading to its whole position skew because of filter core 42 overlength, lead to the filter effect not good.
Further, referring to fig. 5, the chute 38 and the slider 48 are of an inverted T shape; through the setting of the type of falling T, position when installing filter core structure 4 is spacing, avoids it to take place the displacement and rock in the use, and leads to unable normal clear work.
Further, referring to fig. 3 and 5, a plurality of protrusions 49 are disposed on the upper end plate 45, the lower end plate 47 and the partition plate 46, and a plurality of oil through holes 410 are disposed on the partition plate 46 and the lower end plate 47; through the arrangement of a plurality of protrusions 49, the contact between the upper end plate 45, the lower end plate 47 and the partition plate 46 and the filter element 42 is increased, and the stability of the compression of the filter element 42 is increased.
Further, as shown in fig. 2-4, a flip cover 39 is movably mounted on the housing 31, one end of the flip cover 39 is movably connected with the housing 31 through a hinge, and the other end of the flip cover 39 is fixedly connected with the housing 31 through a bolt; a safety valve 310 is also arranged at the top of the outer shell 31; the housing 31 and the flip cover 39 are further provided with a sealing component 5, the sealing component 5 comprises a sealing block 51 and a sealing groove 52 which are arranged on the housing 31 and the flip cover 39 and are matched with each other, and a sealing ring 53 is arranged in the sealing groove 52; the filter element structure 4 is convenient to disassemble and assemble through the arrangement of the turnover cover 39; by arranging the sealing component 5, the sealing performance of the joint of the flip cover 39 and the shell 31 is increased, and the lubricating oil is prevented from leaking.
Further, referring to fig. 1 and 7, the chassis 1 includes a framework 11 and a cover plate 12 installed on the framework 11, wherein a plurality of fixing buckles 13 are movably installed on the cover plate 12; the framework 11 is also provided with a plurality of lifting rings 14; the case 1 is also provided with a pressure gauge 15 connected with the filtering mechanism 3 through a pipeline; the bottom of the case 1 is also provided with a roller 16; through the arrangement of the fixing buckles 13, when the cover plate 12 is installed, the cover plate 12 can be fixedly installed only by rotating the fixing buckles 13 to clamp the framework 11; the hoisting is facilitated by the arrangement of the hoisting ring 14; the movement is facilitated by the arrangement of the rollers 16.
The lubricating oil purification working process of the invention comprises the following steps: referring to fig. 1-7, the purifying apparatus is first connected to the lubricating oil station through a pipeline, then the lubricating oil in the oil tank is pumped into the oil pump 2 through the pipeline by the oil pump 2, and is pumped into the oil inlet chamber 36 of the valve block 32 through the oil outlet pipe 33, then the lubricating oil in the oil chamber 36 flows into the housing 31 through the oil inlet 411 on the lower end plate 47 to contact with the filter element 42, and flows into the filter element 42 after being intercepted, absorbed and adsorbed by the filter element 42, and flows into the oil outlet chamber 37 through the oil through hole 410 on the lower end plate 47 and then flows back to the oil tank through the oil return pipe 33.
The filter element structure replacing process of the invention comprises the following steps: referring to fig. 1-7, firstly, several filter element plates 43 are stacked on the screw rod 41 in a staggered manner and fixed by the upper end plate 45, the separation plate 46 and the lower end plate 47, then the fixing buckle 13 is rotated, the cover plate 12 is removed, then the bolt of the flip cover and the housing 31 is removed, then the flip cover 39 is opened, after the filter element structure 4 is removed from the slide block 48 by the matching of the slide block 48 and the slide groove 38, a new filter element structure 4 is slidably mounted on the valve block 32 by the matching of the slide block 48 and the slide groove 38, then the flip cover 39 is fixedly connected with the housing 31 by the bolt, finally the cover plate 12 is mounted on the framework 11 and the fixing buckle 13 is rotated, and the framework 11 is clamped by the fixing buckle 13, namely the mounting is completed.
Example 2:
referring to fig. 8, the difference between this embodiment and embodiment 1 is that the filter mechanism 3 in this embodiment includes a valve block 32 installed in the cabinet 1, a housing 31, and a top cover 311 installed on the housing 31; the valve block 32 is fixedly arranged in the case 1 through bolts; the filter element structure 4 further comprises a lower end plate 47 fixedly installed at the bottom of the housing 31 and movably connected with the screw rod 41, a partition plate 46 movably installed on the screw rod 41, and an upper end plate 45; the lower end plate 47 is fixedly connected with the valve block 32 through bolts; this embodiment needs to pull down whole filter mechanism from quick-witted incasement when carrying out filter core structure change, then is carrying out the renew cartridge.
The filter cartridge replacement process of this embodiment: firstly, the fixing buckle 13 is rotated, the cover plate 12 is taken down, then bolts for fixing the valve block 32 and the lower end plate 47 are unscrewed, the shell 31 is taken out, the top cover 311 is opened, then the upper end plate 45, the filter element 42 and the separation plate 46 are taken out, then a plurality of new filter element plates 43 are alternately overlapped and threaded on the screw rod 41, the separation plate 46 and the upper end plate 45 are installed, the filter element 42 is separated through the separation plate 46, the filter element 42 is pressed through the upper end plate 45, then the top cover 311 is installed on the shell 31, the shell 31 is installed on the valve block 32, the valve block 32 and the lower end plate 47 are fixedly connected through the bolts, finally, the cover plate 12 is installed on the framework 11, the fixing buckle 13 is rotated, and the framework 11 is clamped through the fixing buckle 13, and then the installation is finished.
Example 3:
referring to fig. 9, the present embodiment is different from embodiments 1 and 2 in that the present embodiment does not have a pump, and the microcirculation is performed by the power of the oil pump in the lubricating oil station directly through the bypass connected in parallel to the lubricating oil station, and the separate provision of the oil pump is not needed, thereby saving the cost.
The scope of protection of the invention is not limited to the above embodiments and variations thereof. The present invention is not limited to the above embodiments, but may be modified in various ways.
Claims (8)
1. A bypass microcirculation online super-cleaning device comprises a case (1), an oil pump (2) arranged in the case (1) and a filtering mechanism (3) which is arranged in the case (1) and is connected with the oil pump (2) through a pipeline; it is characterized by also comprising a filter element structure (4) which is arranged in the filtering mechanism (3) and can be disassembled and assembled; the filter element structure (4) comprises a screw rod (41) and a filter element (42) penetrating through the screw rod (41), the filter element (42) comprises a plurality of filter element plates (43), a plurality of dirt receiving grooves (44) are formed in two sides of each filter element plate (43), when the filter element plates (43) are stacked, the dirt receiving grooves (44) in the adjacent filter element plates (43) are stacked in a staggered mode, and the filter element plates (43) are formed by pressing kapok fibers; the filtering mechanism (3) comprises a shell (31) installed in the chassis (1), and a valve block (32) installed at the bottom of the shell (31) and partially located in the shell (31), wherein the filter element structure (4) is slidably installed on the valve block (32) and located in the shell (31); an oil outlet pipe (33) connected with the oil pump (2), an oil return pipe (34) and a drain pipe (35) arranged at the bottom of the valve block (32) are arranged on the valve block (32); an oil inlet cavity (36) communicated with the oil outlet pipe (33) and an oil outlet cavity (37) communicated with the sewage discharge pipe (35) and the oil return pipe (34) are arranged on the valve block (32); the valve block (32) is also provided with a chute (38).
2. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 1, characterized in that: the filter element structure (4) comprises a screw rod (41), an upper end plate (45) arranged on the screw rod (41), a separation plate (46), a lower end plate (47) and filter elements (42) arranged between the upper end plate (45) and the separation plate (46) and between the separation plate (46) and the lower end plate (47); the lower end plate (47) is provided with a sliding block (48) matched with the sliding groove (38); and an oil inlet hole (411) communicated with the oil inlet cavity (36) is formed in the lower end plate (47).
3. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 2, characterized in that: the sliding groove (38) and the sliding block (48) are in an inverted T shape.
4. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 1, characterized in that: the filtering mechanism (3) comprises a valve block (32) arranged in the case (1), a shell (31) and a top cover (311) arranged on the shell (31); the valve block (32) is fixedly arranged in the case (1) through bolts; the filter element structure (4) further comprises a lower end plate (47) fixedly arranged at the bottom of the shell (31) and movably connected with the screw rod (41), a separation plate (46) movably arranged on the screw rod (41) and an upper end plate (45); the lower end plate (47) is fixedly connected with the valve block (32) through bolts.
5. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 2, characterized in that: all be equipped with a plurality of archs (49) on upper end plate (45), lower end plate (47) and division board (46), all be equipped with a plurality of oil through holes (410) on division board (46) and lower end plate (47).
6. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 1, characterized in that: the shell (31) is also movably provided with a flip cover (39), one end of the flip cover (39) is movably connected with the shell (31) through a hinge, and the other end of the flip cover (39) is fixedly connected with the shell (31) through a bolt; the top of the shell (31) is also provided with a safety valve (310); still be equipped with seal assembly (5) on shell (31) and flip (39), seal assembly (5) contain set up on shell (31) and flip (39) each other be mutually supporting seal block (51) and seal groove (52), install sealing washer (53) in seal groove (52).
7. The on-line ultra-cleaning equipment of the bypass microcirculation according to claim 1, characterized in that: the case (1) comprises a framework (11) and a cover plate (12) arranged on the framework (11), wherein a plurality of fixing buckles (13) are movably arranged on the cover plate (12); the framework (11) is also provided with a plurality of lifting rings (14); a pressure gauge (15) connected with the filtering mechanism (3) through a pipeline is further installed on the case (1); and the bottom of the case (1) is also provided with rollers (16).
8. The method for manufacturing a bypass microcirculation online ultra-cleaning device as claimed in any one of claims 1 to 7, wherein: the preparation method comprises the following steps:
the first step is as follows: assembling the filter element structure (4); firstly, overlapping a plurality of pressed filter plates (43) on a screw rod (41) in a staggered way and fixing the filter plates through an upper end plate (45), a partition plate (46) and a lower end plate (47);
the second step is that: the filter element structure (4) is installed; mounting the assembled filter element structure (4) into the shell (31) and connecting the assembled filter element structure with the valve block (32);
the third step: a fixed filter element structure (4); fixedly connecting the flip cover (39) with the shell (31) or fixedly connecting the top cover (311) with the shell (31) through bolts;
the fourth step: mounting cover plate (12): the cover plate (12) is fixedly arranged on the framework (11) through the fixing buckle (13) to finish the installation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110702166.8A CN113350876B (en) | 2021-06-24 | 2021-06-24 | Bypass microcirculation online super-purification equipment and manufacturing method thereof |
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| CN202110702166.8A CN113350876B (en) | 2021-06-24 | 2021-06-24 | Bypass microcirculation online super-purification equipment and manufacturing method thereof |
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| CN113350876B true CN113350876B (en) | 2022-04-19 |
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| CN113350876A (en) | 2021-09-07 |
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Denomination of invention: A bypass microcirculation online ultra clean purification equipment and its production method Effective date of registration: 20230323 Granted publication date: 20220419 Pledgee: Bank of China Limited by Share Ltd. Fuyang branch Pledgor: ZHEJIANG YIPU LUBRICATION EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2023980035725 |
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