CN110772873B - Installation guide structure of filter element end cover - Google Patents

Installation guide structure of filter element end cover Download PDF

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Publication number
CN110772873B
CN110772873B CN201911163860.6A CN201911163860A CN110772873B CN 110772873 B CN110772873 B CN 110772873B CN 201911163860 A CN201911163860 A CN 201911163860A CN 110772873 B CN110772873 B CN 110772873B
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ring
oil return
filter element
rotating body
sealing
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CN110772873A (en
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程建彬
张宇
邓青林
朱桂香
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Zhejiang Weitai Automobile Parts Co ltd
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Zhejiang Weitai Automobile Parts Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30Filter housing constructions

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  • Chemical Kinetics & Catalysis (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The invention aims to provide an installation guiding structure of a filter element end cover, which is used for solving the problems in the prior art, and comprises a circular cover body arranged at the lower end of a filter element, and further comprises: a rotating body: the rotary body is sleeved on the cover body and at least comprises a first base ring which is stopped against the cover body and a first guiding driving part which is arranged on the inner wall of the first base ring and is directed downwards, and the rotary body can relatively rotate with the cover body under the action of the first guiding driving part; and (2) a mounting seat: the rotating body is sleeved on the mounting seat, and the mounting seat is in sealing connection with the rotating body and at least comprises a second base ring in sealing connection with the rotating body and an oil return hole positioned on the side surface of the second base ring. The installation guide structure of the filter element end cover can realize the installation positioning guide function of the filter element during installation through a simple structure, and meanwhile, the structure is simple, the production is convenient, and the filter element can be conveniently installed on the traditional filter element with the existing model for use.

Description

Installation guide structure of filter element end cover
Technical Field
The invention relates to the technical field of fluid filtering devices, in particular to an installation guiding structure of a filter element end cover.
Background
The filter element separates solid particles in liquid or gas, or makes different substance components fully contact, quickens the reaction time, can protect the normal work of equipment or the cleaning of air, and when fluid enters the filter element provided with a filter screen with certain specification, the impurity of the fluid is blocked, and clean fluid flows out through the filter element. The liquid filter element can clean the polluted liquid (including oil, water and the like) to the state required by production and life, namely, the liquid reaches a certain cleanliness.
The filter element is generally installed in a filter shell which is positioned in a fluid passage and can isolate the external environment for working, and a safety and a valve which are closed for replacing the filter element in the fluid passage are opened through a filter element structure in order to stabilize the working effect during working. In the existing installation process, an installer is required to manually insert the filter element into the filter housing and adjust the position of the filter element under the condition of no view to try alignment of the mating structure, resulting in troublesome installation and low efficiency. Meanwhile, the filter element partially adopting the spiral track type automatic guiding function is complex in structure and high in production cost.
Disclosure of Invention
The invention aims to provide the installation guide structure of the filter element end cover, which is used for solving the problems in the prior art, and the installation guide structure of the filter element end cover can realize the installation positioning guide function of the filter element during installation with a simple structure, is simple in structure and convenient to produce, and can be conveniently installed on the traditional filter element with the existing model for use.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the utility model provides an installation guide structure of filter core end cover, includes the annular lid of installing in the filter core lower extreme, still includes:
a rotating body: the rotary body is sleeved on the cover body and at least comprises a first base ring which is abutted against the cover body and a first guiding oil return plug which is arranged on the inner wall of the first base ring and points downwards, and the rotary body can rotate relative to the cover body under the action of the first guiding oil return plug.
As a preferred aspect of the present invention, the present invention further comprises a mount: the rotary body is sleeved on the mounting seat, the mounting seat is in sealing connection with the rotary body, and the rotary body at least comprises a second base ring in sealing connection with the rotary body and an oil return hole positioned on the side surface of the second base ring; the rotator further comprises an oil return plug, wherein the oil return plug is connected to the outer circumference of the first base ring, and the oil return plug is inserted into the oil return hole.
Preferably, the oil return plug comprises a base body integrally connected with the first base ring and a movable body mounted at the end of the base body and movable along the axial direction of the base body, and the periphery of the movable body is in sealing contact with the inner wall of the oil return hole.
Preferably, the oil return hole is connected with the oil return plug in a sealing way through a sealing ring.
Preferably, the rotary body further comprises a first shoulder part which is circumferentially arranged in the first base ring and is abutted against the upper end of the first guide oil return plug.
Preferably, the first shoulder portion extends inward to form a stop portion, a supporting ring sleeved in the rotating body is further arranged between the rotating body and the mounting seat, the lower end of the supporting ring is in stop contact with the mounting seat, the upper end of the supporting ring extends to form a second shoulder portion in stop contact with the first shoulder portion, and the supporting ring wall surface is provided with a first groove connected with the first guiding oil return plug and a second groove connected with the stop portion.
Preferably, the rotating body further comprises an extension ring extending upwards from the first base ring, the extension ring has an upward diameter gradually increasing at a joint with the first base ring, and a connecting part is arranged at the upper end part of the extension ring.
In the invention, preferably, the inner ring edge of the cover body extends upwards to form a first sealing part, the outer side surface of the extending ring is provided with a second sealing part, and the first sealing part is in sealing connection with the second sealing part.
Preferably, the upper end of the first sealing part extends to be stopped/clamped with the connecting part.
Preferably, the lower surface of the cover body is provided with at least two arranged closed rings, and the rotating body further comprises a ring shoulder extending outwards from the side surface of the first base ring, and the closed rings are abutted against the ring shoulder.
The invention has the beneficial effects that: the structure of sleeving the rotary body and the mounting seat layer by layer and other structures can respectively realize a more convenient guiding and positioning function for mounting the filter element and an opening function for a valve or a safety of the filtering passage; the rotary body and the mounting seat can rotate freely relative to the filter element through rotation, so that the filter element is further not required to be regulated, and the rotary positioning and the safety and valve opening can be automatically realized, so that the mounting convenience is further improved; the end cover has simple integral structure and small volume, can be installed on the common filter element of the existing model, is convenient to install and saves the production cost; the speed of guide loading and stability during supporting can be further improved by adding the supporting ring again; through the design of the oil return plug, the splash and other problems of oil can be effectively reduced when the filter element is disassembled and assembled.
Drawings
FIG. 1 is a schematic view of a bottom view of a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention with a filter cartridge attached;
FIG. 3 is a schematic view of a fitting structure installed in a filter according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second embodiment of the present invention with a filter cartridge attached;
FIG. 5 is a schematic cross-sectional view of a third embodiment of the present invention with a filter cartridge attached;
FIG. 6 is a schematic view illustrating a connection structure between a rotating body and a mounting base in a third embodiment of the present invention;
FIG. 7 is a schematic view of the structure of an oil return plug in a third embodiment of the present invention;
the drawings are respectively as follows: the oil-liquid separator comprises a cover body 1, a first sealing part 11, a closed ring 12, a rotating body 2, a first base ring 21, a first guiding oil return plug 22, a second oil return plug 23, a base 231, a movable body 232, a first shoulder part 24, a stopping part 241, an extending ring 25, a connecting part 251, a second sealing part 252, a ring shoulder 26, a mounting seat 3, a second base ring 31, an oil return hole 33, a sealing ring 331, a supporting ring 4, a second shoulder part 41, a first groove 42, an oil liquid passage column 5, a guiding ring 51 and a positioning groove 52.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
example 1
The installation guide structure of a filter element end cover as shown in fig. 1, 2 and 3 comprises a circular cover body 1 installed at the bottom of a filter element and serving as a lower end cover, and further comprises: injection molded rotary body 2: the rotating body 2 is concentrically sleeved on the inner side of the cover body 1 and comprises a first base ring 21 which is abutted against the cover body 1 and a first guiding oil return plug 22 which is integrally arranged on the inner wall of the first base ring 21 and points downwards. Further comprises: the mount pad 3 of fixed mounting in the filter casing internal bottom: in this embodiment, the mounting base 3 is concentrically sleeved (in other preferred embodiments, the mounting base 3 may be arranged in a non-concentric manner, so long as the mounting base is structurally rotatable, and the arrangement of the lower mounting base 3, the sealing ring 12, etc. may be also so long as the mounting base is rotatable), and when the mounting base is mounted on the outer side of the rotating body 2, the mounting base 3 is sealed and sleeved on the outer side of the rotating body 2 by rotating the filter element to realize sealing connection. In this embodiment, the mounting base 3 further includes an oil return hole 33 extending from the second base ring 31 and sleeved on the outer side of the oil return plug 23.
Referring to fig. 3, the operation of the present invention is as follows (for convenience of viewing, the cover 1 and other parts of the filter element are hidden): the middle is provided with an oil liquid passage column 5 for oil passing through the filter shell, the wall surface of the oil liquid passage column is integrally formed with two guide rings 51 which are in spiral surrounding structures, the two guide rings 51 are symmetrically arranged, a space is arranged between the lower side ends of the two guide rings 51, and a positioning groove 52 extends downwards along the space. When installing the filter core that has the installation guide structure of this application, the installer only need make the hole cover of filter core outside the center post and insert the filter core to the filter casing, first direction oil return stopper 22 moves down and contacts guide ring 51, installer's push down power makes first direction oil return stopper 22 follow two guide ring 51 surfaces that make up and form the surrounding structure and continue to move down (i.e. rotator 2 also rotates thereupon), first direction oil return stopper card promptly is gone into and is not rotationally moved down along its direction after rotating to constant head tank 52, guarantee that the oil return stopper etc. that is located on the rotator is confirmed thereupon, and can conveniently insert corresponding position on the filter casing etc. downwards. Therefore, the working procedure that an installer rotates the filter element to align when the existing filter element is installed is omitted, the installation efficiency is improved, and the probability of occurrence of the problems of wrong installation and the like is reduced.
In this embodiment, the first oil return guide 22 is a ridge extending in the axial direction.
In this embodiment, the rotating body 2 further includes an oil return plug 23, which is integrally formed and connected to the outer circumference of the first base ring 21 in this embodiment, and is inserted into an oil return hole 33 located on the mounting seat 3, meanwhile, the oil return hole 33 is used for discharging oil when the filter element is replaced, so as to avoid the problem that the oil is possibly thrown away and pollutes the working environment due to the replacement operation of the oil, and after the filter element is inserted, the oil return plug 23 is inserted into the oil return hole 33, so that the filter element is sealed, so that the oil can be accumulated in the filter to realize filtering operation, and when the filter element is removed, the oil return plug 23 is pulled out along with the filter element, and the passage of the oil return hole 33 is opened, so that the oil leaks outwards into the oil tank. The oil return plug 23 can realize a stable opening effect after being accurately positioned and mounted through the rotating body 2 and the mounting seat 3, and meanwhile, the end part of the oil return plug 23 is in a truncated cone shape (in other preferred embodiments, the end part can also be in a conical shape or other guidable structures) and can realize a more efficient guiding and sealing effect through the conical surface of the truncated cone shape.
In this embodiment, the oil return hole 33 is connected with the oil return plug 23 through the seal ring 331 in a sealing manner, so that on one hand, leakage of fluid in the valve/safety opened by the oil return plug 23 is realized, and on the other hand, the connection stability between the rotating body 2 and the mounting seat 3 is improved through elastic force and elastic force generated by extrusion of the seal ring 331, so that the problems of falling off and the like during downward insertion are prevented.
In this embodiment, the rotating body 2 further includes a first shoulder 24 circumferentially provided around the inner circumference of the first base ring 21, the first shoulder 24 being stopped against the upper end of the first pilot oil return plug 22 and having the first base ring 21 extending inward to a thickness smaller than that of the first pilot oil return plug 22, and preferably being in a sleeved relationship with the outer diameter of the guide ring 51 of the oil passage column 5, this arrangement makes it possible to provide a reinforcing rib or other structure for controlling the oil passage having a thickness smaller than that of the first shoulder 24 on the inner wall surface of the first base ring 21 without affecting the fit of the first pilot oil return plug 22 with the positioning groove 52 (only the first pilot oil return plug 22 is thicker than the first shoulder 22 so as to be insertable into the positioning groove 52), while providing a space for other functions and structures, and reducing the risk of erroneous installation.
In this embodiment, the rotating body 2 further includes an extension ring 25 extending upward from the first base ring 21, where the extension ring 25 has an upward diameter increasing at a connection position with the first base ring 21, please refer to fig. 2, the extension ring 25 is in a state of being inserted into a central tube of the filter core to achieve connection when the end cap is installed in the filter core, and the elastic clamping and blocking in the central tube of the filter core can be effectively achieved to prevent falling through the increasing diameter of the extension ring, meanwhile, the stable installation of the end cap on the filter core can be achieved only through simple insertion action, so that the end cap can be applied to the common filter core of the existing model for installation without structural modification, and thus, the filter core has good production economy and convenience.
In this embodiment, the upper end portion of the extension ring 25 is integrally formed with a connecting portion 251 protruding to the side surface thereof in a hook shape, please refer to fig. 2, and when the extension ring is mounted to the central column of the filter element, the connecting portion 251 is just clamped on the ring body of the central column in the hook shape thereof to form a further stable connection effect.
In this embodiment, the inner ring edge of the cover body 1 extends upward to form a first sealing portion 11 with a tapered horn shape, the outer side surface of the extending ring 25 is provided with a second sealing portion 252 with a horizontal extending ring shape, the first sealing portion 11 and the second sealing portion 252 are mutually abutted to form a sealing connection through a structure, and a V-shaped sealing ring is arranged between the first sealing portion 11 and the second sealing portion 252 to prevent leakage of filtered fluid.
In this embodiment, the lower surface of the cover body 1 is integrally formed with two concentrically arranged ridge-shaped sealing rings 12, the rotating body 2 further includes a shoulder 26 extending outwards from the side surface of the first base ring 21, the sealing rings 12 and the shoulder 26 are stopped so as to reduce contact friction therebetween, so that the rotating body 2 and the mounting seat 3 can be conveniently and smoothly rotated, and the sealing and leakage-preventing effects are ensured through the structure of the multi-layer sealing rings 12.
Example two
The technical scheme described in the second embodiment is similar to the first embodiment, and is different from the first embodiment in that:
referring to fig. 4, in the present embodiment, the upper end portion of the connecting portion extending ring 25 is integrally formed with a connecting portion 251 protruding to the side surface thereof in a claw shape. Meanwhile, the inner ring edge of the cover body 1 is upwards extended to form a first sealing part 11 with a gradually-reduced horn shape, the outer side surface of the extension ring 25 is provided with a second sealing part 252 with a horizontally-extended ring shape, the first sealing part 11 and the second sealing part 252 are mutually abutted to form sealing connection through structures, and a V-shaped sealing element is arranged between the first sealing part 11 and the second sealing part 252 to prevent leakage of filtered fluid. The upper end of the first seal portion 11 extends to be abutted against the bottom surface of the connection portion 251 (in other preferred embodiments, other structures may be used to form abutment or engagement between the connection portion 251 and the first seal portion 11). Thus, after the two are installed, a structure similar to a labyrinth seal with better sealing effect can be formed.
Meanwhile, the central column of the filter element in the embodiment is gradually thinned in a wedge shape at the end cover of the filter element, and when the filter element is installed, the outer side surface of the first sealing part 11 just abuts against the ring body of the central column to form a stable connection effect. Meanwhile, the structure of the non-permanent fixed connection with the central column also brings the effect of convenient disassembly and assembly, and the filter element end cover can be conveniently detached, recycled and reused when the maintenance and replacement of the filter element are carried out, so that the use cost is reduced.
Example III
The technical scheme described in the third embodiment is similar to the second embodiment, and is different from the second embodiment in that:
as shown in fig. 5, 6 and 7, the oil return plug 23 in the present embodiment is of a split type design, and includes a base 231 integrally connected to the first base ring 21, and a movable body 232 mounted to an end of the base 231 by being engaged with each other and movable in an axial direction thereof, the outer periphery of the movable body 232 having a circumferential umbrella shape, and being in sealing contact with an inner wall of the oil return hole 33 by an elastic action of a larger diameter and the umbrella shape. When the oil return hole 33 is inserted, the edge of the movable body 232 is elastically deformed by compression of the oil return hole 33, sealing is achieved, friction force caused by elastic deformation stops in the oil return hole 33, and the base 231 continues to be inserted until the rotating body 2 is stopped against the mounting seat 3 due to radial movement with the movable body 232, which achieves the same function as the oil return plug 23 in the first embodiment. When the filter element is replaced by maintenance of the vehicle, the base 231 which is integrally and rigidly connected with the filter element body is pulled up at first when the action of pulling out the filter element is just started, at this time, the movable body 232 does not act due to relative movement and friction until the action range of pulling out the filter element is larger than the relative movement range between the base 231 and the movable body 232, and the movable body 232 is pulled out, namely, the pulled-out action presents two-section pulling-out action through the movable body 232 and has a slow action interval in the middle, the action interval enables the oil possibly remained at the oil return plug 23 during operation to flow out to the outside in a time, the problem that the oil is thrown out (causing pollution to the working environment) when the oil is directly pulled out is solved, the action is an effect naturally brought by the structure, the time of the oil is not needed for the oil to flow out by a worker to be specially and semi-pulled out by the filter element is not needed, and therefore the training cost of the worker is reduced, and the possibility of the oil is thrown out by misoperation is eliminated.
Meanwhile, in the present embodiment, the rotating body 2 further includes a first shoulder 24 circumferentially provided around the inner circumference of the first base ring 21, the first shoulder 24 is stopped against the upper end of the first guide oil return plug 22, the first shoulder 24 is inwardly extended with a stopping portion 241, the stopping portion 241 is used for realizing downward positioning stopping and for pressing the supporting ring 4 downward to press-open the oil passage under the oil passage column 5, and the stopping portion 241 includes two kinds of: shorter for positioning the stop and longer for pressing the support ring 4. There is also a supporting ring 4 between the rotating body 2 and the mounting seat 3, the supporting ring 4 is placed in the mounting seat 3 at ordinary times and is placed in a compressible suspension by a small spring, the lower end of the supporting ring can be stopped against the mounting seat 3 after the spring is compressed (the spring is used for bouncing the spring to close the lower oil liquid passage to prevent leakage after removing the filter element), the upper end of the supporting ring extends to form a second shoulder 41 which is stopped against the first shoulder 24, the wall surface of the supporting ring 4 is provided with a first groove 42 which is connected with a longer stopping part 241 and has a square notch at the bottom of the guiding inclined surface, and a second groove which is connected with a shorter stopping part 241 and has a horizontal notch structure. When the filter element is installed, the rotary body 2 is downwards placed in the filter housing and downwards finally contacts with the supporting ring 4, the walls of the two parts are in a sleeved structure, at the moment, the longer abutting part 241 downwards can contact with the guide inclined surface of the first groove 42 and push the supporting ring 4 to rotate (the rotary body 2 where the abutting part 241 is located can not rotate because of the cooperation of the first guide oil return plug 22 and the positioning groove 52 at the moment) and can be guided to continuously downwards rotate to press the baffle of the oil liquid passage below, and after the longer abutting part 241 downwards clamps into the square notch of the first groove 42, the shorter abutting part 241 also clamps into the second groove and abuts against the second groove (the correspondence between the two parts is realized through parameter setting), and meanwhile, the first shoulder 24 is abutted against the second shoulder 41, so that a good fixed supporting effect after installation is realized.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention fall within the scope of the present invention, and the technical content claimed by the present invention is fully described in the claims.

Claims (6)

1. The utility model provides a mounting guide structure of filter core end cover, includes to install in the annular lid (1) of filter core lower extreme, its characterized in that still includes:
rotating body (2): the rotating body (2) is concentrically sleeved on the inner side of the cover body (1); the middle is provided with an oil liquid passage column (5) for oil passing through the filter shell, the wall surface of the oil liquid passage column is integrally formed with two guide rings (51) which are in spiral surrounding structures, the two guide rings (51) are symmetrically arranged, a space is arranged between the lower side ends of the two guide rings (51), and a positioning groove (52) is formed by extending downwards along the space;
the specific structure of the rotating body (2) comprises a first base ring (21) which is stopped by the cover body (1) and a first guiding oil return plug (22) which is integrally arranged on the inner wall of the first base ring (21) and points downwards; an extension ring (25) extending upwards from the first base ring (21), wherein the diameter of the extension ring (25) upwards increases at the joint of the extension ring and the first base ring (21), and a connecting part (251) protruding to the side surface of the extension ring (25) in a hook claw shape is integrally formed at the upper end part of the extension ring; the edge of the inner ring of the cover body (1) is upwards extended with a first sealing part (11) which is gradually and downwards horn-shaped, the outer side surface of the extension ring (25) is provided with a second sealing part (252) which is horizontally and annularly extended, and the first sealing part (11) and the second sealing part (252) are mutually stopped by a structure to form sealing connection; the first shoulder (24) is arranged around the inner circumference of the first base ring (21), the first shoulder (24) is abutted against the upper end of the first guide oil return plug (22), and the thickness of the first base ring (21) extending inwards is smaller than the thickness of the first guide oil return plug (22); the first shoulder part (24) is internally provided with a stopping part (241) in an extending way, and the stopping part (241) is used for realizing downward positioning stopping and is used for pressing the supporting ring (4) downwards to open an oil liquid passage below the oil liquid passage column (5); the abutment portion (241) includes two types: the shorter one is used for positioning and stopping, and the longer one is used for pressing the supporting ring (4);
the mounting seat (3) is fixedly arranged at the inner bottom of the filter shell body: the installation seat (3) is concentrically sleeved on the outer side of the rotating body (2), and when the filter element is installed, the installation seat (3) is in sealing sleeve connection with the outer side of the rotating body (2) to realize sealing connection;
there is also a supporting ring (4) sleeved in the rotating body (2) between the rotating body (2) and the mounting seat (3), the supporting ring (4) is placed in the mounting seat (3) at ordinary times and is placed in a compressible suspension mode through a spring, the lower end of the supporting ring is stopped against the mounting seat (3) after the spring is compressed, the upper end of the supporting ring extends to form a second shoulder (41) stopped against the first shoulder (24), the wall surface of the supporting ring (4) is provided with a first groove (42) which is connected with the longer stopping part (241) and has a square notch at the bottom of the guiding inclined surface, and a second groove which is connected with the shorter stopping part (241) and has a horizontal notch structure, and the rotating body (2) can rotate relative to the cover body (1) under the action of the first guiding oil return plug (22).
2. The installation guide structure of the filter element end cover according to claim 1, wherein the installation seat (3) at least comprises a second base ring (31) in sealing connection with the rotating body (2) and an oil return hole (33) positioned on the side surface of the second base ring (31); the rotary body (2) further comprises an oil return plug (23), the oil return plug (23) is connected to the outer circumference of the first base ring (21), and the oil return plug (23) is inserted into the oil return hole (33).
3. The mounting guide structure of a cartridge head cover according to claim 2, wherein the oil return plug (23) includes a base body (231) integrally connected to the first base ring (21) and a movable body (232) mounted to an end portion of the base body (231) and movable in an axial direction thereof, and an outer periphery of the movable body (232) is in sealing contact with an inner wall of the oil return hole (33).
4. The installation guide structure of the filter element end cover according to claim 2, wherein the oil return hole (33) is in sealing connection with the oil return plug (23) through a sealing ring (331).
5. The mounting guide structure of a cartridge end cap according to claim 1, wherein the upper end of the first seal portion (11) extends to a stop/snap engagement with the connecting portion (251).
6. The installation guiding structure of the filter element end cover according to claim 1, wherein at least two arranged sealing rings (12) are arranged on the lower surface of the cover body (1), the rotating body (2) further comprises a ring shoulder (26) extending outwards from the side surface of the first base ring (21), and the sealing rings (12) are abutted against the ring shoulder (26).
CN201911163860.6A 2019-11-25 2019-11-25 Installation guide structure of filter element end cover Active CN110772873B (en)

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