CN113775915A - Deep sea equipment oil cleaner - Google Patents
Deep sea equipment oil cleaner Download PDFInfo
- Publication number
- CN113775915A CN113775915A CN202011512378.1A CN202011512378A CN113775915A CN 113775915 A CN113775915 A CN 113775915A CN 202011512378 A CN202011512378 A CN 202011512378A CN 113775915 A CN113775915 A CN 113775915A
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- CN
- China
- Prior art keywords
- guide
- diaphragm
- phase
- deep sea
- filter
- 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.)
- Pending
Links
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 abstract description 24
- 239000010705 motor oil Substances 0.000 abstract description 15
- 238000001914 filtration Methods 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 2
- 239000013618 particulate matter Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229920001967 Metal rubber Polymers 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
An oil filter for deep sea equipment is applied to the deep sea equipment and is used for filtering oil of the deep sea equipment. The main structure of the device consists of a shell, a bottom shell, an impeller, a phase rod, a diaphragm guide disc, a guide pressure disc, a filter frame, a homing spring, a filter element and a phase rod guide seat. The engine oil enters from the inlet at the upper part of the shell, is pressurized by the impeller to flow to the filter element for filtering, and flows out from the outlet at the lower part of the bottom shell after being filtered. When the filter element begins to be blocked due to particulate matter accumulation, the pressure difference between the upper side and the lower side of the phase rod is increased, and the phase rod moves axially and drives the membrane diversion disc to rotate to switch the filter element. The device solves the problems that the deep sea equipment electric control element is unreliable in long-time work and high in part replacement cost.
Description
Technical Field
The invention belongs to the field of deep sea oil extraction equipment, and particularly relates to an oil filter for deep sea equipment.
Background
At present, the domestic deep sea oil extraction field still needs to face a lot of difficulties, and in the aspect of deep sea oil extraction equipment, the problem of high oil extraction cost exists. The deep sea oil extraction equipment can not be opened after working for a long time, the cleaning degree of lubricating oil directly influences the service life and the reliability of the oil extraction equipment, and the lubricating oil is polluted to cause the aggravation of the abrasion of equipment parts and even the consequence of equipment shutdown.
On the other hand, the reliability of the electronic element is rapidly reduced after the electronic element works in a deep sea environment for a period of time, and the electric control equipment is not suitable for long-term deep sea operation.
The underwater robot has huge deep sea operation cost, limited degree of freedom and force of the current deep sea robot manipulator, higher replacement work cost of deep sea equipment parts and higher difficulty.
The invention provides an oil filter for deep sea equipment, which can reliably work for a long time without an electric control element or replacing parts.
Disclosure of Invention
The invention aims to solve the problem that the deep sea equipment cannot replace engine oil and an engine oil filter for a long time. The invention designs an oil filter which does not need manual replacement and remote control.
The technical scheme adopted by the invention for solving the problems is as follows: the invention designs an oil filter for deep sea equipment, wherein the filter element material is made of metal rubber, the material has high strength and small diameter of filter particles, and can filter tiny particles in engine oil while ensuring high oil pressure. The invention uses the impeller to provide power for filtration, and the impeller is connected with a motor or a pump shaft in the oil extraction equipment through a transmission mechanism. When the filter uses small particulate matter jam in the filter core can be by the machine oil after a period, the continuous work of impeller can cause impeller below and export both sides pressure differential increase this moment, at this moment pressure differential under-action push phase pole axial displacement, and phase pole front end gets into phase pole guide holder direction tooth and begins to rotate, extrudes the diaphragm simultaneously and drives the rotation of diaphragm water conservancy diversion dish to the realization is at the switching of filter core. In the switching process, the positioning spring pin of the diaphragm flow guide disc can accurately position the rotating position of the flow guide disc, when the oil flow channel is switched to a next filter element, the pressure difference between the two sides of the inlet and the outlet of the filter is reduced, and the phase rod returns under the action of the extruded diaphragm and the return spring.
The invention has the technical advantages that: the invention provides a filtering device capable of ensuring the cleanliness of engine oil for a long time without replacement and control, and compared with the current marine equipment, the filtering device has the advantages of deeper working water depth, small device volume, no need of additional control and no need of replacing a filter element.
Drawings
FIG. 1 is an external view of the present invention.
Fig. 2 is an internal structural view of the present invention.
Figure 3 is an impeller according to the present invention.
Fig. 4 is a housing of the present invention.
Fig. 5 shows a phase rod according to the invention.
Fig. 6 is a diaphragm deflector of the present invention.
Fig. 7 is a pressure guide plate according to the present invention.
Fig. 8 is a bottom view of fig. 7.
Fig. 9 shows a diaphragm deflector positioning spring pin of the present invention.
Fig. 10 is a filter frame according to the present invention.
Fig. 11 is a bottom view of fig. 10.
FIG. 12 is a cross-sectional view of a filter cartridge according to the present invention.
Fig. 13 shows a phase rod guide of the present invention.
Fig. 14 is a filter cartridge of the present invention.
FIG. 15 shows a bottom case according to the present invention.
Fig. 16 is an assembly view of the phase rod, the return spring, and the phase rod guide of the present invention.
Fig. 17 shows a bottom gasket of the present invention.
Fig. 18 is a pilot pressure disk seal ring of the present invention.
Fig. 19 is a phase rod seal ring of the present invention.
In the figure, 1, an impeller; 101, an impeller shaft; 102, a blade; 2, a housing; 201, bolt seat; 202, a diaphragm deflector positioning ring; 3, a phase bar; 301, a contact pad; 302, contact pad guide teeth; 303, a first transmission rod; 304, the phase rod homing spring positioning seat; 305, a second transmission rod; 306, a drive link guide tooth; 4, bolts; 5, a diaphragm flow guide disc; 501, guiding teeth of a diaphragm flow guide disc; 502, a diaphragm; 503, positioning a spring pin hole by a diaphragm guide disc; 504, diaphragm deflector plate deflector holes; 6, a diversion pressure plate; 601, guiding holes of a guiding pressure plate; 602, phase rod through hole; 603, sealing ring grooves of diversion holes of the diversion pressure plate; 604, a flow guide ring; 7, a bottom shell sealing ring; 8, positioning a spring pin by the diaphragm flow guide disc; 801, positioning a spring pin shell by a diaphragm flow guide disc; 802, a spring; 803, a base; 9, a diversion pressure plate sealing ring; 10, a nut; 11, a filter frame; 1101, a filter frame phase rod through hole; 1102, fixing the disc; 1103, a filter element holder; 1104, a filter frame positioning pin hole; 1105, a phase rod seal ring groove; 1106, a phase rod sleeve; 1107, filter rack screw holes; 12, a phase rod seal ring; 13, a homing spring; 14, a phase rod guide; 1401, a phase rod shoe guide tooth; 1402, a spring positioning pin for returning the phase rod guide seat; 1403, a phase rod guide seat screw hole; 15, phase rod guide seat bolt; 16, a filter element; 17, a bottom shell; 1701, fixing a diaphragm guide disc; 1702, filter cartridge retaining pin; 1703, bottom case sealing ring groove; 1704, a filter holder fixing table; 1705, nut seat.
Detailed Description
As shown in fig. 1, 2, 16, 17, 18, and 19, an oil filter for deep sea equipment includes an impeller 1, a housing 2, a phase rod 3, a bolt 4, a diaphragm guide plate 5, a guide pressure plate 6, a bottom case seal ring 7, a diaphragm guide plate positioning spring pin 8, a guide pressure plate seal ring 9, a nut 10, a filter frame 11, a phase rod seal ring 12, a homing spring 13, a phase rod guide seat 14, a phase rod guide seat screw 15, a filter element 16, and a bottom case 17. In use, the impeller 1 is powered by the oil recovery unit motor or pump so that the oil is held at a pressure after entering the upper inlet and is pressurized before entering the filter element 16. The engine oil enters the filter element 16 through the membrane flow guide disc 5 and flows out after being filtered. When the filter element 16 is blocked due to the accumulation of particles generated by long-time filtration, the flow resistance of the filter element 16 is increased, the pressure difference between the space below the impeller 1 and the bottom outlet is increased, the phase rod 3 is in contact with the environment below the impeller 1 and the outlet, the pressure difference causes the phase rod 3 to move axially and extrude the membrane deflector 5, the phase rod 3 enters the phase rod guide seat 14 and rotates, the phase rod 3 drives the membrane deflector 5 to rotate and simultaneously compress the homing spring 13, the membrane deflector 5 is rotationally positioned by the membrane deflector positioning spring pin 8, the positioned engine oil is switched to enter the next filter element for filtration, the pressure difference between the two sides below the impeller 1 and the outlet is reduced, and the phase rod 3 is repositioned under the extrusion force of the membrane deflector 5 and the homing spring 13.
Fig. 3 shows an impeller 1 according to the invention, which consists of an impeller shaft 101 and blades 102. The impeller shaft 101 is powered by the oil extraction motor or pump mechanism.
Fig. 4 shows a housing 2 according to the invention, comprising a bolt seat 201 and a diaphragm retaining ring 202. The diaphragm guide disc positioning ring 202 is designed in a wave shape, the highest position is the position of the diaphragm guide disc positioning spring pin 8 when the filter normally works, when the phase rod 3 drives the diaphragm guide disc 5 to rotate, the diaphragm guide disc positioning spring pin 8 slides along the diaphragm guide disc positioning ring 202 and is compressed at the same time, and when the diaphragm guide disc positioning ring slides over the wave crest of the positioning ring 202 and enters the wave trough, the diaphragm guide disc 5 is accurately positioned.
Fig. 5 shows a phase lever 3 according to the present invention, which includes a contact pressure plate 301, a contact plate guide tooth 302, a first transmission lever 303, a return spring positioning seat 304, a second transmission lever 305, and a transmission lever guide tooth 306. The phase lever 3 does not participate in the normal operation of the device, when the filter element 16 is blocked to cause the pressure difference between the lower part of the impeller 1 and the outlet to be increased, the contact pressure plate 301 presses the diaphragm guide disc 5, the transmission lever guide tooth 306 rotates in the phase lever guide seat 14, and meanwhile, the contact disc guide tooth 302 drives the diaphragm guide disc 5 to rotate. The contact position of the first transmission rod 303 and the filter frame 11 is sealed by the phase rod sealing ring 12, so that the engine oil can only flow through the filter element 16 without other leakage. A return spring 13 is arranged outside the second transmission rod 305, and the position of the return spring is determined by a return spring positioning seat 304, so that the return spring 13 can work normally when the phase rod 3 rotates.
Fig. 6 shows a diaphragm guide plate 5 of the present invention, which includes a diaphragm guide plate guide tooth 501, a diaphragm 502, a diaphragm guide plate positioning spring pin hole 503, and a diaphragm guide plate guide hole 504. The guide teeth 501 are engaged with the contact disc guide teeth 302 of the phase rod 3, a diaphragm deflector disc positioning spring pin 8 is arranged in the diaphragm deflector disc positioning spring pin hole 503, and the diaphragm deflector disc positioning spring pin 8 positions the rotation angle of the diaphragm deflector disc 5. When the phase rod 3 rotates, the contact disc guide teeth 302 drive the membrane guide disc guide teeth 501 to rotate, the membrane guide disc guide teeth 501 and the contact disc guide teeth 302 are designed to be in one-way guide, and the membrane guide disc 5 does not rotate along with the phase rod 3 when the phase rod is extruded by the homing spring 13 to rotate and home. The membrane diversion plate diversion holes 504 cooperate with the diversion pressure plate 6 to ensure that engine oil enters the corresponding filter element through the diversion holes.
Fig. 7 and 8 show a flow guide platen 6 of the present invention, which includes a flow guide platen flow guide hole 601, a phase rod through hole 602, a flow guide platen flow guide hole seal ring groove 603, and a flow guide ring 604. The flow guide holes 601 of the flow guide plate are matched with the flow guide holes 504 of the membrane flow guide plate 5, the sealing ring grooves 603 of the flow guide plate are matched with the flow guide plate sealing ring 9, it is ensured that engine oil flows only to the corresponding filter element 16 without other leakage, and the flow guide ring 604 ensures that the engine oil smoothly enters the filter element 16 and is fully filtered.
Fig. 9 shows a diaphragm positioning spring pin 8 of the present invention, which includes a diaphragm positioning spring pin housing 801, a spring 802, and a base 803. The device is matched with a membrane guide disc positioning spring pin hole 503 of a membrane guide disc 5, a shell 801 of the membrane guide disc positioning spring pin is contacted with a membrane guide disc positioning ring 202 of a shell 2, and a base 803 is contacted with a membrane guide disc fixing platform 1701 of a bottom shell 17. When the diaphragm guide disc 5 rotates, the spring 802 slides from the trough of the diaphragm guide disc positioning ring 203 to the crest and is compressed at the same time, and when the crest slides to the trough, the compressed spring 802 recovers the length to fix the positioning spring pin 8 at the trough position, so that the diaphragm guide disc 5 is accurately positioned.
Fig. 10 and 11 show a filter frame 11 according to the present invention, which includes a through hole 1101 for fitting the phase rod 3, a fixing plate 1102, a filter element frame 1103, a filter frame positioning pin hole 1104, a phase rod sleeve 1106, and a filter frame screw hole 1107. The phase rod 3 passes through the through hole 1101, the fixing disc 1102 is placed on a filter holder fixing table 1704 of the bottom case 17, the filter element 16 is placed in the filter element holder 1103, the filter holder positioning pin hole 1104 is matched with a filter holder fixing positioning pin 1702 of the bottom case 17 to ensure that the filter holder 11 is fixed in position, and the phase rod 3 is placed in the phase rod sleeve 1106. The bottom of the phase rod sleeve 1106 is fitted to the phase rod guide 14, and the guide hole 1107 fits to the phase rod guide screw 15 to fix the phase rod guide 14.
Fig. 12 is a cross-sectional view of the filter holder 11 of the present invention, and it can be seen that the filter holder 11 includes a phase rod seal groove 1105, and the phase rod seal groove 1105 is provided with a phase rod seal 12 to ensure that the camera oil does not flow in the gap between the first transmission rod 303 of the position rod 3 and the phase rod sleeve 1106. The positions of the filter frame positioning pin holes 1104 and the filter frame screw holes 1107 can be seen.
Fig. 13 shows a phase rod guide 14 of the present invention, which includes a phase rod guide tooth 1401, a phase rod guide return spring positioning pin 1402, and a phase rod guide screw hole 1403. The device is secured to the phase rod sleeve 1106 of the filter housing 11 by a phase rod guide housing screw 1403. The drive rod guide teeth 306 of the phase rod 3 rotate as it moves axially under the influence of differential pressure cutting into the phase rod guide housing guide teeth 1401. The return spring positioning pin 1402 of the phase lever guide is engaged with the return spring 13 to ensure that the return spring 13 is correctly deformed when the phase lever 3 is rotated. At the same time, the phase rod guide 14 is designed such that when it is fitted to the phase rod sleeve 1106, there is a gap at the connection, so that oil can be drained or sucked in through the gap at the connection of the phase rod guide 14 and the phase rod sleeve 1106, between the phase rod 3 and the phase rod sleeve 1106 when the phase rod 3 is moved axially.
Fig. 14 shows a filter element 16 of the present invention, which uses metal rubber as a material, which has high strength and small diameter of filterable particles, and meets the requirement of oil filtration. The filter element 16 is placed in the filter element frame 1103 of the filter frame 11, and the upper inlet is matched with the flow guide ring 604 of the flow guide pressure plate 6, so that the engine oil can smoothly enter the filter element 16 from the flow guide pressure plate flow guide holes 601 of the flow guide pressure plate 6 and can be effectively filtered.
Fig. 15 shows a bottom case 17 of the present invention, which includes a diaphragm guide plate fixing stage 1701, a filter holder fixing pin 1702, a bottom case seal ring groove 1703, a filter holder fixing stage 1704, and a nut holder 1705. Wherein the membrane diaphragm fixing stand 1701 is matched with the membrane diaphragm 5, and the base 803 of the membrane diaphragm positioning spring pin 8 slides on the plane when the membrane diaphragm 5 rotates. The filter cartridge retaining pin 1702 mates with the filter cartridge retaining pin hole 1104 of the filter cartridge 11. The bottom case sealing ring groove 1703 is provided with a bottom case sealing ring 7 to ensure that the shell 2 is tightly matched with the bottom case 17 and prevent engine oil or seawater from leaking. The filter holder fixing stand 1704 fits the fixing plate 1102 of the filter holder 11. The nut seat 1705 is fitted with the nut 10 and the bolt 4.
Fig. 17 shows the bottom case gasket 7 of the present invention, which is installed in the bottom case gasket groove 1703 to ensure the tight fit between the housing 2 and the bottom case 17 and prevent leakage of engine oil or seawater.
Fig. 18 shows a guide pressure plate seal ring 9 of the present invention, which is installed in a guide hole seal ring groove 603 of a guide pressure plate, and the guide hole seal ring groove 603 of the guide pressure plate is matched with the guide pressure plate seal ring 9, so as to ensure that the engine oil flows only to the corresponding filter element 16 without other leakage.
Fig. 19 shows the phase rod seal 12 of the present invention, wherein the phase rod seal groove 1105 is provided with the phase rod seal 12 to ensure that the camera oil does not flow in the gap between the first transmission rod 303 of the position rod 3 and the phase rod sleeve 1106.
Claims (8)
1. An oil filter for deep sea equipment is characterized by comprising an impeller, a shell, a phase rod, a bolt, a diaphragm guide disc, a guide pressure disc, a diaphragm guide disc positioning spring pin, a nut, a filter frame, a homing spring, a phase rod guide seat screw, a filter element and a bottom shell.
2. The deep sea equipment oil filter of claim 1 wherein the housing includes a bolt seat, a diaphragm deflector positioning ring; the diaphragm deflector locating ring adopts a wave-shaped design.
3. The deep sea equipment oil filter of claim 1, wherein the phase lever comprises a contact pressure plate, a contact plate guide tooth, a first transmission rod, a homing spring positioning seat, a second transmission rod and a transmission rod guide tooth; the contact disc guide teeth are unidirectional guide teeth; the transmission rod guide teeth are one-way guide teeth.
4. The deep sea equipment oil filter of claim 1 wherein the diaphragm deflector includes diaphragm deflector guide teeth, a diaphragm, diaphragm deflector positioning spring pin holes, diaphragm deflector guide holes; the membrane deflector guide teeth are one-way teeth.
5. The oil filter for deep sea equipment of claim 1, wherein the flow guide pressure plate comprises a flow guide pressure plate flow guide hole, a phase rod through hole, a flow guide pressure plate flow guide hole seal ring groove and a flow guide ring.
6. The oil filter of claim 1, wherein the diaphragm deflector disc positioning spring pin comprises a diaphragm deflector disc positioning spring pin housing, a spring, and a base.
7. The oil filter for deep sea equipment of claim 1, wherein the filter frame comprises a through hole for matching with the phase rod, a phase rod sealing ring groove, a fixed disc, a filter element frame, a filter frame positioning pin hole, a phase rod sleeve and a filter frame screw hole.
8. The oil filter for deep sea equipment of claim 1, wherein the phase rod guide seat comprises a phase rod guide seat guide tooth, a phase rod guide seat homing spring positioning pin and a phase rod guide seat screw hole, and the phase rod guide seat guide tooth is a one-way guide tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011512378.1A CN113775915A (en) | 2020-12-19 | 2020-12-19 | Deep sea equipment oil cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011512378.1A CN113775915A (en) | 2020-12-19 | 2020-12-19 | Deep sea equipment oil cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113775915A true CN113775915A (en) | 2021-12-10 |
Family
ID=78835356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011512378.1A Pending CN113775915A (en) | 2020-12-19 | 2020-12-19 | Deep sea equipment oil cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113775915A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370445A (en) * | 2022-10-06 | 2022-11-22 | 郑州筹艮汽车配件有限公司 | Automobile oil filter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000033209A (en) * | 1998-07-16 | 2000-02-02 | Kyuno Kk | Filter housing |
| CN205013088U (en) * | 2015-08-31 | 2016-02-03 | 淄博永华滤清器制造有限公司 | Pair lubricating oil filter handle auto -change over device |
| CN105771666A (en) * | 2016-04-12 | 2016-07-20 | 成都美富特膜科技有限公司 | Membrane filtration assembly |
| CN210660253U (en) * | 2019-09-27 | 2020-06-02 | 潍柴重机股份有限公司 | Three-cylinder filter base capable of replacing filter element without stopping machine |
| CN210699093U (en) * | 2019-09-29 | 2020-06-09 | 大庆市腾飞石油机械有限公司 | Filter |
| CN214093954U (en) * | 2020-12-19 | 2021-08-31 | 青岛深蓝水下工程技术有限公司 | Deep sea equipment oil cleaner |
-
2020
- 2020-12-19 CN CN202011512378.1A patent/CN113775915A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000033209A (en) * | 1998-07-16 | 2000-02-02 | Kyuno Kk | Filter housing |
| CN205013088U (en) * | 2015-08-31 | 2016-02-03 | 淄博永华滤清器制造有限公司 | Pair lubricating oil filter handle auto -change over device |
| CN105771666A (en) * | 2016-04-12 | 2016-07-20 | 成都美富特膜科技有限公司 | Membrane filtration assembly |
| CN210660253U (en) * | 2019-09-27 | 2020-06-02 | 潍柴重机股份有限公司 | Three-cylinder filter base capable of replacing filter element without stopping machine |
| CN210699093U (en) * | 2019-09-29 | 2020-06-09 | 大庆市腾飞石油机械有限公司 | Filter |
| CN214093954U (en) * | 2020-12-19 | 2021-08-31 | 青岛深蓝水下工程技术有限公司 | Deep sea equipment oil cleaner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370445A (en) * | 2022-10-06 | 2022-11-22 | 郑州筹艮汽车配件有限公司 | Automobile oil filter |
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