CN205298496U - Lubricant oil filter - Google Patents
Lubricant oil filter Download PDFInfo
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- CN205298496U CN205298496U CN201521036410.8U CN201521036410U CN205298496U CN 205298496 U CN205298496 U CN 205298496U CN 201521036410 U CN201521036410 U CN 201521036410U CN 205298496 U CN205298496 U CN 205298496U
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- pressure limiting
- lubricating oil
- oil inlet
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Abstract
The application discloses lubricant oil filter includes sealing connection's strainer cover and filter main part and sets up the voltage limiting piece on the strainer cover, be provided with the oil feed passageway in the strainer cover, produce oil passageway and bypass passageway, the oil feed passageway with produce oil the passageway and all communicate with filter main part and the external world separately, the bypass passageway passes through the by -pass port and communicates with the passageway intercommunication that produces oil, oil feed passageway and bypass passageway, the voltage limiting piece sets up in the bypass passageway for open with the shutoff by -pass port. After the jam appears in the filter, the increase of the oil pressure of oil feed passageway, when the oil pressure was greater than the restriction of voltage limiting piece, the by -pass port was opened to the voltage limiting piece, and the oil feed passageway passes through the by -pass port and gets into the bypass passageway with bypass passageway intercommunication, lubricating oil by the oil feed passageway, at last from the passageway discharge filter that produces oil, in the entering speed reducer box, can continue to well -off lubricating oil in the speed reducer box to lubricating oil can not leak, can not cause the pollution of operating mode, can be applicable to abominable operating mode environment.
Description
Technical field
This utility model relates to mechanical lubrication technical field, particularly to a kind of lubricating oil filter.
Background technology
Force feed is one of primary lubricant form of reductor; filter is the groundwork device of force feed; filter act as in elimination lubricating oil solid particulate matter (be mainly reductor operationally wear and tear produce chip); protect the gear in reductor and bearing; prevent the oil pipe that metal fragment or other impurity are decelerated in machine from spraying into the contact surface of gear or bearing, in turn result in heavy wear.
Existing filter is typically in front end and installs overflow valve, is filtered the pressure limiting of device porch. Along with the long-time use of filter, the impurity dregs that filter element leaches increase gradually, and the pressure reduction of filter element both sides also can be gradually increased until blocking. When both sides pressure reduction is more than the setting value of overflow valve, lubricating oil will flow out from overflow valve, to remind workman to change filter element or cleaning filter. But when plugged filter, the flow at filter outlet place will reduce, cause that the oil jet lubrication in decelerating chassis body is insufficient, it is likely that cause that reductor internal workpiece is damaged. Meanwhile, when plugged filter, the lubricating oil at filter inlet place is leaked by overflow valve, cause the pollution of field working conditions, and owing to lubricating oil has certain viscosity, clear up very easily covered with dust and cinder not in time, therefore use under more severe operating mode and need to constantly clear up, waste time and energy.
In addition, iron filings or scum and part iron oxides it is mainly due to the sediment impurity in reductor lubricating oil, magnet generally can be built in the filter element of filter by prior art, in order to the fe in impurity screening, although this filtered version efficiency is significantly high, but it is easily caused the saturated rapidly of filter element, occurs especially in the running-in period of reductor. Causing that the frequency changing filter element is higher, cost is also higher.
In sum, how to solve plugged filter and cause that the flow of lubrication of filter outlet reduces, make the oil jet lubrication in decelerating chassis body insufficient, and lubricating oil leak pollute problem, become those skilled in the art's problem demanding prompt solution.
Utility model content
In view of this, the purpose of this utility model is in that to provide a kind of lubricating oil filter, and can continue to sufficient lubrication reductor when blocking occurs filter, and lubricating oil will not leak contaminated environment.
For reaching above-mentioned purpose, this utility model provides techniques below scheme:
A kind of lubricating oil filter, including the strainer cover being tightly connected and filter body and be arranged at the pressure limiting part on described strainer cover; Oil inlet passage, oil discharge passage and bypass channel it is provided with in described strainer cover, described oil inlet passage each connects with described filter body and the external world with described oil discharge passage, described bypass channel connects with described oil discharge passage, and described oil inlet passage is connected by by-pass port with described bypass channel; Described pressure limiting part is arranged in described bypass channel, is used for opening and block described by-pass port.
Preferably, in above-mentioned lubricating oil filter, described bypass channel is provided with the installing port for installing pressure limiting part being in communication with the outside, and described pressure limiting part is sealedly attached in described installing port.
Preferably, in above-mentioned lubricating oil filter, described pressure limiting part includes:
Fixing seat, is seal-installed in described installing port, and offers pilot hole on described fixing seat;
Pressure limiting bolt, one end of described pressure limiting bolt is movably through described pilot hole the outer face stretching out described fixing seat, and the other end is provided with the plug for blocking described by-pass port;
Elastic reset part, is sheathed on described pressure limiting bolt, and the two ends of described elastic reset part elastic reaction respectively is on described fixing seat and described plug.
Preferably, in above-mentioned lubricating oil filter, described pressure limiting part also includes being arranged at the sealing ring for sealing with the periphery of described pressure limiting bolt in described pilot hole.
Preferably, in above-mentioned lubricating oil filter, described pressure limiting part also includes the nut that the threaded one end stretching out described fixing seat with described pressure limiting bolt is connected.
Preferably, in above-mentioned lubricating oil filter, described filter body includes:
Filter housing, one end of described filter housing and described strainer cover are tightly connected, and the other end is closed;
Filter element, is arranged in described filter housing;
Oil inlet pipe, is fixed in described filter housing, and connects with described oil inlet passage, and described oil inlet pipe stretches out one end end face away from described strainer cover of described filter element.
Preferably, in above-mentioned lubricating oil filter, described filter body also includes the magnet being fixed in described filter housing, and described magnet is arranged near the outlet of described oil inlet pipe.
Preferably, in above-mentioned lubricating oil filter, the exit position of the close described oil inlet pipe of described filter housing is provided with annular groove, and described magnet is two arc magnets, and described arc magnet is fixed in described annular groove.
Preferably, in above-mentioned lubricating oil filter, being provided with the conical flow guiding chamber for reverse water conservancy diversion between blind end and the described magnet of described filter housing, the cone point in described conical flow guiding chamber is away from the outlet of described oil inlet pipe.
Preferably, in above-mentioned lubricating oil filter, described filter body also includes the some gussets being fixed in described filter housing, described gusset is parallel to the axis of described oil inlet pipe, and the both sides of the edge of the axis being parallel to oil inlet pipe of described gusset are individually fixed on the inwall of described filter housing and the tube wall of described oil inlet pipe.
Compared with prior art, the beneficial effects of the utility model are:
In the lubricating oil filter that this utility model provides, strainer cover and filter body are tightly connected, pressure limiting part is arranged on strainer cover, oil inlet passage, oil discharge passage and bypass channel it is provided with in strainer cover, oil inlet passage each all connects with filter body and the external world with oil discharge passage, and bypass channel connects with oil discharge passage, and oil inlet passage is connected by by-pass port with bypass channel, pressure limiting part is arranged in bypass channel, is used for opening and closing by-pass port.Lubricating oil is entered in filter body by oil inlet passage and is filtered, lubricating oil after filtration passes through oil discharge passage discharge filter, after filter uses appearance blocking for a long time, the oil pressure of oil inlet passage increases, and when oil pressure is more than the restriction of pressure limiting part, by-pass port is opened by pressure limiting part, oil inlet passage is connected with bypass channel by by-pass port, lubricating oil is entered bypass channel by oil inlet passage, finally from oil discharge passage discharge filter, enters in decelerating chassis body. Visible, when blocking occurs in filter, lubricating oil can continue to well-off lubricating oil in decelerating chassis body, and lubricating oil will not leak, and does not result in the pollution of operating mode, it is not necessary to labor cleaning, it is possible to suitable in severe work condition environment.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
The structural representation of a kind of lubricating oil filter that Fig. 1 provides for this utility model embodiment;
The mounting structure schematic diagram of the pressure limiting part of a kind of lubricating oil filter that Fig. 2 provides for this utility model embodiment.
Wherein, 1 be strainer cover, 101 be oil inlet passage, 102 be oil discharge passage, 103 be bypass channel, 104 be by-pass port, 105 be installing port, 2 be filter body, 201 be filter housing, 202 be filter element, 203 be oil inlet pipe, 204 be conical flow guiding chamber, 205 be magnet, 206 be gusset, 3 be limited casting die, 301 be fixing seat, 302 be pressure limiting bolt, 303 be elastic reset part, 304 be plug, 305 be nut.
Detailed description of the invention
Core of the present utility model there is provided a kind of lubricating oil filter, can continue to sufficient lubrication reductor when blocking occurs filter, and lubricating oil will not leak contaminated environment.
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to shown in Fig. 1 and Fig. 2, this utility model embodiment provides a kind of lubricating oil filter, and including strainer cover 1, filter body 2 and pressure limiting part 3, wherein, strainer cover 1 and filter body 2 are tightly connected, and pressure limiting part 3 is arranged on strainer cover 1; Oil inlet passage 101, oil discharge passage 102 and bypass channel 103 it is provided with in strainer cover 1, oil inlet passage 101 connects extraneous and filter body 2, oil discharge passage 102 also connects extraneous and filter body 2, bypass channel 103 connects with oil discharge passage 102, and oil inlet passage 101 is connected by the by-pass port 104 in strainer cover 1 with bypass channel 103; Pressure limiting part 3 is arranged in bypass channel 103, is used for opening and block by-pass port 104.
The operation principle of above-mentioned lubricating oil filter is: lubricating oil is entered in filter body 2 by the oil inlet passage 101 on strainer cover 1 and is filtered, the lubricating oil filtered, by oil discharge passage 102 discharge filter on strainer cover 1, enters in decelerating chassis body.When normal filtration, by-pass port 104 is blocked by pressure limiting part 3, oil inlet passage 101 does not connect with bypass channel 103, when filter is after using for a long time, there is blocking in filter body 2, lubricating oil can not be smoothly through filter body 2, the oil pressure at oil inlet passage 101 place is gradually increased, simultaneously, enter the flow of lubrication in decelerating chassis body from oil discharge passage 102 to start to reduce, when the oil pressure of oil inlet passage 101 is more than the pressure limit of pressure limiting part 3, pressure limiting part 3 opens by-pass port 104, oil inlet passage 101 connects with bypass channel 103, owing to bypass channel 103 connects with oil discharge passage 102, therefore, oil inlet passage 101 connects with oil discharge passage 102, lubricating oil is through oil inlet passage 101, by-pass port 104, bypass channel 103 and oil discharge passage 102, enter in decelerating chassis body. visible, when blocking occurs in filter, lubricating oil can continue to provide sufficient lubricating oil in decelerating chassis body, it is ensured that the lubrication of reductor. and during plugged filter, do not have lubricating oil and leak, thus avoid work condition environment to be subject to lubricant pollution, it is not required that labor intensive is cleared up, it is possible to suitable in clean or severe operating mode.
As depicted in figs. 1 and 2, in the present embodiment, bypass channel 103 is provided with the installing port 105 for installing pressure limiting part 3 being in communication with the outside, and installing port 105 is preferably provided at the top of strainer cover 1, and pressure limiting part 3 is sealedly attached in installing port 105. Pressure limiting part 3 includes fixing seat 301, pressure limiting bolt 302 and elastic reset part 303. Wherein, fixing seat 301 is seal-installed in installing port 105, fixing seat 301 offers pilot hole, one end of pressure limiting bolt 302 is movably through pilot hole the outer face stretching out fixing seat 301, the other end of pressure limiting bolt 302 is provided with the plug 304 for blocking by-pass port 104, and plug 304 can seal with the EDGE CONTACT of by-pass port 104; Elastic reset part 303 is sheathed on pressure limiting bolt 302, and the two ends of elastic reset part 302 elastic reaction respectively is on fixing seat 301 and plug 304, pressure limiting bolt 302 applies to point to the pressure of by-pass port 104, and elastic reset part 303 can be compression spring or gum elastic.
The operation principle of above-mentioned pressure limiting part 3 is: when filter body 2 blocks, oil pressure in oil inlet passage 101 gradually rises, when oil pressure reaches elastic reset part 303 in pressure limiting part 3 to the pressure of pressure limiting bolt 302, plug 304 and pressure limiting bolt 302 are backed down by lubricating oil from by-pass port 104, pressure limiting bolt 302 moves along pilot hole to the outside of fixing seat 301, by-pass port 104 is opened, lubricating oil enters bypass channel 103, oil discharge passage 102 by by-pass port 104, finally enter in decelerating chassis body, thus ensure that the lasting sufficient lubrication of reductor. And owing to pressure limiting bolt 302 stretches out certain length to fixing seat 301 is outside, according to pressure limiting bolt 302, staff can stretch out whether condition adjudgement filter occurs in that blocking when safeguarding, in order to carry out follow-up replacing and maintenance.
Fixing seat 301 in the present embodiment is connected with installing port 105 thread seal of strainer cover 1, easy disassembly, by the degree of depth in the fixing seat 301 precession installing port 105 of adjustment, the elastic force of elastic reset part 303 can also be adjusted, thus regulating the pressure limit of pressure limiting part 3. Specifically, fixing seat 301 can be formed by the stifled processing transformation of an outer-hexagonal, and the outer face as stifled at outer-hexagonal hollows out, and at central aperture, i.e. pilot hole, outer-hexagonal is stifled has external screw thread, arranges the female thread matched at installing port 105 place.Certainly, fixing seat 301 can also press-fit and is fixed in installing port 105, it is not limited to the version cited by the present embodiment.
As in figure 2 it is shown, further, in the present embodiment, pressure limiting part 3 also includes the sealing ring being arranged in pilot hole, and sealing ring is preferably O RunddichtringO, for and sealing between the periphery of pressure limiting bolt 302. Leaking of lubricating oil can be avoided better. The inwall of pilot hole is arranged to the cannelure of accommodating sealing ring, sealing ring is embedded the installation that can realize sealing ring in cannelure. It is of course also possible to be not provided with sealing ring, sealing between the two also can be improved by improving the quality of fit of pilot hole and pressure limiting bolt.
As in figure 2 it is shown, further, in the present embodiment, pressure limiting part 3 also includes the nut 305 that the threaded one end stretching out fixing seat 301 with pressure limiting bolt 3023 is connected. The effect of nut 305 has two, and one is the screw thread rotation number of turns by adjusting nut 305 with pressure limiting bolt 302, regulates the elastic force of elastic reset part 303 further, the pressure limit of pressure limiting part 3 is adjusted; Another effect is with nut 305 for mark, the height that the convenient observation lubricated oil of pressure limiting bolt 302 ejects, it is simple to staff judges whether that needs are replaced and safeguard filter. It is of course also possible to be not provided with nut 305, the elastic force of elastic reset part 303 simply can not be regulated together with fixing seat 301. Ejection height as pressure limiting bolt 302, it is possible to draw corresponding labelling on pressure limiting bolt 302, can facilitate staff to observe equally.
As it is shown in figure 1, in the present embodiment, filter body 2 includes filter housing 201, filter element 202 and oil inlet pipe 203. Wherein, one end of filter housing 201 and strainer cover 1 are tightly connected, it is preferred to thread seal connects, and one end of filter housing 201 is closed; Filter element 202 is arranged in filter housing 201, and filter element 202 is made up of filtering material and drainage screen, and drainage screen is arranged at the two ends up and down of filtering material, and filtering material is fixed in filter housing 201 by drainage screen; Oil inlet pipe 203 is fixed in filter housing 201, oil inlet pipe 203 connects with oil inlet passage 101, and oil inlet pipe 203 stretches out one end end face away from strainer cover 1 of filter element 202, preferably, oil inlet pipe 203 is positioned at the medium position of filter housing 201, can with the dead in line of filter housing 201, certainly, other position can also be arranged at, between the blind end of filter element 202 and filter housing 201, there is chamber. During work, lubricating oil enters in this chamber through the outlet of oil inlet pipe 203, after this chamber fills, lubricating oil enters filter element 202 from the side of the close blind end of filter element 202, after filter element 202 filters, from the side of the close strainer cover 1 of filter element 202 out, finally discharge from oil discharge passage 103, enter in decelerating chassis body.
It can be seen that oil inlet passage 101 and oil discharge passage 102 can be arranged at homonymy by the filter in this utility model, and concentrate on a strainer cover 1, make filtration device structure compact simply.
As it is shown in figure 1, further, in the present embodiment, filter body 2 also includes the magnet 205 being fixed in filter housing 201, and magnet 205 is arranged near the outlet of oil inlet pipe 203. Arranging magnet 205 in the exit position of oil inlet pipe 203 is in order to lubricating oil is before entering filter element 202, by the iron adsorption in lubricating oil on magnet 205, the iron filings in lubricating oil are avoided to be filtered by filter element 202, cause filter element 202 saturated rapidly, thus improve the service life of filter element 202, reduce maintenance cost.It is of course also possible to be not provided with magnet 205, or being arranged in filter element 202 by magnet 205, simply filter effect is not as the good filtration effect in the present embodiment.
Specifically, the exit position of the close oil inlet pipe 203 of filter housing 201 is provided with annular groove, and magnet 205 is two arc magnets, and arc magnet is fixed in annular groove. Certainly, magnet 205 other shape all right, as long as can adsorbing the iron filings in lubricating oil.
Further, in the present embodiment, it is provided with the conical flow guiding chamber 204 for reverse water conservancy diversion lubricating oil between blind end and the magnet 205 of filter housing 201, and the cone point in conical flow guiding chamber 204 is away from the outlet of oil inlet pipe 203. Owing to oil inlet pipe 203 is arranged at the medium position of filter housing 201, lubricating oil enters conical flow guiding chamber 204 after discharging from the outlet of oil inlet pipe 203, lubricating oil reversely flows back under the guide functions of taper surface, lubricating oil is directed to the position at magnet 205 place, thus facilitating the absorption of iron filings in lubricating oil. It is of course also possible to be not provided with conical flow guiding chamber 204, the inner face of blind end can also is that planar structure.
In the present embodiment, filter body 2 also includes the some gussets 206 being fixed in filter housing 201, gusset 206 is parallel to the axis of oil inlet pipe 203, and the both sides of the edge of the axis being parallel to oil inlet pipe 202 of gusset 206 are individually fixed on the inwall of filter housing 201 and the tube wall of oil inlet pipe 203. Thus oil inlet pipe 203 is fixed in filter housing 201 by gusset 206, it is preferable that multiple gussets 206 are evenly arranged on the tube wall of oil inlet pipe 203, and filter element 202 is arranged in the space formed by multiple gussets 206. Gusset 206 may also operate as the effect of the structural strength improving filter housing 201. Certainly, oil inlet pipe 203 can also be fixed in filter housing 201 by filter element 202, it is not necessary to gusset 206 is fixed.
Placement after dismantling for convenient filter, is arranged to plane by the blind end outer face of filter housing, it is possible to keep the stability placed.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments. Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a lubricating oil filter, it is characterised in that include the strainer cover (1) that is tightly connected and filter body (2) and the pressure limiting part (3) being arranged on described strainer cover (1); Oil inlet passage (101), oil discharge passage (102) and bypass channel (103) it is provided with in described strainer cover (1), described oil inlet passage (101) each all connects with described filter body (2) and the external world with described oil discharge passage (102), described bypass channel (103) connects with described oil discharge passage (102), and described oil inlet passage (101) is connected by by-pass port (104) with described bypass channel (103);Described pressure limiting part (3) is arranged in described bypass channel (103), is used for opening and block described by-pass port (104).
2. lubricating oil filter according to claim 1, it is characterized in that, described bypass channel (103) is provided with the installing port (105) for installing described pressure limiting part (3) being in communication with the outside, and described pressure limiting part (3) is sealedly attached in described installing port (105).
3. lubricating oil filter according to claim 2, it is characterised in that described pressure limiting part (3) including:
Fixing seat (301), is seal-installed in described installing port (105), and offers pilot hole on described fixing seat (301);
Pressure limiting bolt (302), one end of described pressure limiting bolt (302) is movably through described pilot hole the outer face stretching out described fixing seat (301), and the other end is provided with the plug (304) for blocking described by-pass port (104);
Elastic reset part (303), it is sheathed on described pressure limiting bolt (302), and the two ends of described elastic reset part (303) elastic reaction respectively is on described fixing seat (301) and described plug (304).
4. lubricating oil filter according to claim 3, it is characterised in that described pressure limiting part (3) also includes being arranged at the sealing ring for sealing with the periphery of described pressure limiting bolt (302) in described pilot hole.
5. lubricating oil filter according to claim 3, it is characterized in that, described pressure limiting part (3) also includes the nut (305) that the threaded one end stretching out described fixing seat (301) with described pressure limiting bolt (302) is connected.
6. the lubricating oil filter according to any one of claim 1-5, it is characterised in that described filter body (2) including:
Filter housing (201), one end of described filter housing (201) and described strainer cover (1) are tightly connected, and the other end is closed;
Filter element (202), is arranged in described filter housing (201);
Oil inlet pipe (203), it is fixed in described filter housing (201), and connect with described oil inlet passage (101), described oil inlet pipe (203) stretches out one end end face away from described strainer cover (1) of described filter element (202).
7. lubricating oil filter according to claim 6, it is characterized in that, described filter body (2) also includes the magnet (205) being fixed in described filter housing (201), and described magnet (205) is arranged near the outlet of described oil inlet pipe (203).
8. lubricating oil filter according to claim 7, it is characterized in that, the exit position of the close described oil inlet pipe (203) of described filter housing (201) is provided with annular groove, described magnet (205) is two arc magnets, and described arc magnet is fixed in described annular groove.
9. lubricating oil filter according to claim 7, it is characterized in that, being provided with the conical flow guiding chamber (204) for reverse water conservancy diversion between blind end and the described magnet (205) of described filter housing (201), the cone point of described conical flow guiding chamber (204) is away from the outlet of described oil inlet pipe (203).
10. the lubricating oil filter according to any one of claim 6-9, it is characterized in that, described filter body (2) also includes the some gussets (206) being fixed in described filter housing (201), described gusset (206) is parallel to the axis of described oil inlet pipe (203), and the both sides of the edge of the axis being parallel to oil inlet pipe (203) of described gusset (206) are individually fixed on the inwall of described filter housing (201) and the tube wall of described oil inlet pipe (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036410.8U CN205298496U (en) | 2015-12-10 | 2015-12-10 | Lubricant oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036410.8U CN205298496U (en) | 2015-12-10 | 2015-12-10 | Lubricant oil filter |
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| Publication Number | Publication Date |
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| CN205298496U true CN205298496U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521036410.8U Active CN205298496U (en) | 2015-12-10 | 2015-12-10 | Lubricant oil filter |
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| CN (1) | CN205298496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370867A (en) * | 2015-12-10 | 2016-03-02 | 沃德传动（天津）股份有限公司 | Lubricating oil filter |
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2015
- 2015-12-10 CN CN201521036410.8U patent/CN205298496U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370867A (en) * | 2015-12-10 | 2016-03-02 | 沃德传动（天津）股份有限公司 | Lubricating oil filter |
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