CN110772873A - Installation guide structure of filter element end cover - Google Patents
Installation guide structure of filter element end cover Download PDFInfo
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- CN110772873A CN110772873A CN201911163860.6A CN201911163860A CN110772873A CN 110772873 A CN110772873 A CN 110772873A CN 201911163860 A CN201911163860 A CN 201911163860A CN 110772873 A CN110772873 A CN 110772873A
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- 238000009434 installation Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000008093 supporting effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering 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
- B01D35/30—Filter housing constructions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention aims to provide an installation guide 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 also comprises: rotating body: the rotating 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 guide driving part which is arranged on the inner wall of the first base ring and points downwards, and the rotating body can rotate relative to the cover body under the action of the first guide driving part; a mounting seat: the rotator cup joints on the mount pad, and the mount pad and rotator sealing connection, its at least include with rotator sealing connection's second base ring with be located the oil gallery of second base ring side. The installation guide structure of the filter element end cover can realize a simple structure, namely, the installation positioning guide function when the filter element is installed, and meanwhile, the installation guide 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.
Description
Technical Field
The invention relates to the technical field of fluid filtering devices, in particular to an installation guide structure of a filter element end cover.
Background
The filter element separates solid particles in liquid or gas or makes different material components fully contact, so that the reaction time is shortened, the normal work of equipment or the cleanness of air can be protected, when fluid enters the filter element with a filter screen with a certain specification, impurities are blocked, and clean fluid flows out through the filter element. The liquid filter element makes the liquid (including oil, water, etc.) clean the polluted liquid to the state required by production and life, namely, the liquid reaches a certain cleanliness.
The filter element is generally installed in a filter casing which is positioned in a fluid passage and can isolate the external environment for working, and in order to stabilize the working effect and open a safety valve and a valve which are closed for replacing the filter element in the fluid passage through the filter element structure during working, corresponding matching structures (such as key matching, guide rail sliding block matching and the like) are generally arranged on the filter casing and the filter element to realize the guiding positioning during installation and push the safety valve and the valve open. 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 without visual field to try to align the mating structure, resulting in troublesome installation and low efficiency. Meanwhile, the filter element partially adopting the spiral track type automatic guiding function has a complex structure and high production cost.
Disclosure of Invention
The invention aims to provide an installation guide structure of a filter element end cover, which is used for solving the problems in the prior art, can realize a simple structure, namely, the installation positioning guide function during the installation of a filter element, has a simple structure, is convenient to produce, and can be conveniently installed on the traditional filter element with the existing model for use.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
the utility model provides an installation guide structure of filter core end cover, still includes including installing in the annular lid of the ring shape of filter core lower extreme:
rotating body: the rotator cup joints in the lid, its at least include with the lid end first base ring with locate the first direction oil return stopper of the directional below of first base ring inner wall, the rotator be in under the effect of first direction oil return stopper can with lid relative rotation.
Preferably, the present invention further comprises a mounting seat: the rotating body is sleeved on the mounting seat, the mounting seat is in sealed connection with the rotating body and at least comprises a second base ring in sealed connection with the rotating body and an oil return hole positioned on the side face of the second base ring; the rotating body further comprises an oil return plug, 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 includes a base integrally connected to the first base ring, and a movable body attached to an end of the base and movable in an axial direction thereof, and an outer periphery of the movable body is in sealing contact with an inner wall of the oil return hole.
Preferably, the oil return hole is connected with the oil return plug in a sealing manner through a sealing ring.
Preferably, the rotating body further includes a first shoulder portion disposed around an inner circumference of the first base ring, and the first shoulder portion abuts against an upper end of the first oil return plug.
Preferably, the first shoulder extends inward to form a stop portion, a support ring sleeved in the rotating body is further arranged between the rotating body and the mounting seat, the lower end of the support ring abuts against the mounting seat, the upper end of the support ring extends to form a second shoulder which abuts against the first shoulder, and a first groove connected with the first guide oil return plug and a second groove connected with the stop portion are formed in the wall surface of the support ring.
Preferably, the rotating body further includes an extension ring extending upward from the first base ring, the extension ring has a diameter gradually increasing upward from a connection with the first base ring, and a connection portion is provided at an upper end of the extension ring.
Preferably, the inner ring edge of the cover body extends upwards to form a first sealing part, the outer side surface of the extension ring is provided with a second sealing part, and the first sealing part is connected with the second sealing part in a sealing mode.
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 closed rings, 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 that the rotating body and the mounting seat are sleeved layer by layer and other structures of the rotating body and the mounting seat can respectively realize a more convenient guiding and positioning function during the installation of the filter element and an opening function for a valve or a safety of a filtering passage; the rotary body and the mounting seat can rotate freely relative to the filter element, so that the rotary positioning and the opening of the safety and the valve can be automatically realized without adjusting the filter element so as to further improve the mounting convenience; the end cover has simple integral structure and small volume, can be arranged on the common filter element with the existing model, is convenient to install and saves the production cost; the guide loading speed and the stability during supporting can be further improved by adding the supporting ring again; through the design of oil return plug, can effectively reduce the scheduling problem that splashes of fluid when the filter core dismouting.
Drawings
Fig. 1 is a schematic bottom view of a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a filter cartridge in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a mating 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 structural diagram of the connection between the rotator and the mounting base in the third embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an oil return plug in the third embodiment of the present invention;
the items in the figure are respectively: the sealing structure 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 guide oil return plug 22, an oil return plug 23, a 231 basal body, a 232 movable body, a first shoulder 24, a butting part 241, an extension 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 41, a first groove 42, a second groove 43, a oil passage column 5, a guide ring 51 and a positioning groove 52.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
example one
As shown in fig. 1, 2 and 3, the installation guide structure of a filter element end cover includes a cover body 1 which is installed at the bottom of a filter element in a circular ring shape and is used as a lower end cover, and further includes: injection-molded rotary body 2: the rotating body 2 is concentrically sleeved inside the cover body 1, and includes a first base ring 21 abutting against the cover body 1 and a first guiding oil return plug 22 integrally arranged on the inner wall of the first base ring 21 and pointing downward. Further comprising: the mounting seat 3 fixedly mounted at the bottom in the filter housing: the mounting base 3 in this embodiment is sleeved concentrically (in other preferred embodiments, the mounting base 3 and the driving ring 12 may be arranged eccentrically as long as they can rotate relatively structurally), and when the mounting base is mounted on the outer side of the rotating body 2, the mounting base 3 is sleeved on the outer side of the rotating body 2 in a sealing manner by rotating the filter element, so as to achieve sealing connection. In this embodiment, the mounting base 3 further includes an oil return hole 33 extending outward from the second base ring 31 and sleeved outside the oil return plug 23.
Referring to fig. 3, the operation of the present invention when installed is as follows (for ease of viewing, the cover 1 and other parts of the filter cartridge are hidden): the middle oil passage column 5 is used for oil passing through the filter housing, guide rings 51 in a spiral surrounding structure are integrally formed on the wall surface of the oil passage column 5, the two guide rings 51 are symmetrically arranged in the embodiment, and a space is formed between the lower end parts of the two guide rings 51 and extends downwards along the space to form a wall surface to form a positioning groove 52. When the filter element with the installation guide structure is installed, an installer only needs to enable an inner hole of the filter element to be sleeved outside the center column and insert the filter element into the filter shell, the first guide oil return plug 22 moves downwards and contacts the guide ring 51, the downward pushing force of the installer enables the first guide oil return plug 22 to continuously move downwards along the surface of the two guide rings 51 which are combined to form the surrounding structure (namely the rotating body 2 rotates along with the first guide oil return plug), the first guide oil return plug is clamped into the first guide oil return plug after rotating to the positioning groove 52 and moves downwards along the direction without rotating, the positions of the oil return plug on the rotating body and the like are ensured to be determined, and the first guide oil return plug can be conveniently inserted downwards into the corresponding positions on devices such as the filter shell and. Therefore, the process 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 wrong installation and other problems is reduced.
In this embodiment, the first pilot oil return plug 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 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 base 3, and meanwhile, the oil return hole 33 is used for discharging oil when replacing the filter element, thereby avoiding the problem that the replacement operation with oil causes possible throwing and polluting the working environment, the oil return plug 23 is also inserted into the oil return hole 33 after the filter element is inserted, so as to seal the oil return plug, so that the oil can be stored in the filter, thereby realizing the filtering operation, and when the filter element is removed, the oil return plug 23 is pulled out along with the filter element to leave the oil return hole 33, thereby opening the passage of the oil return hole 33 and making the oil return hole leak the oil to the oil tank. The oil return plug 23 can achieve a stable opening effect after being accurately positioned and mounted by 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 of the oil return plug can also be in a cone shape or other structures capable of guiding), and a more efficient guiding and sealing effect can be achieved through the conical surface of the truncated cone shape.
In this embodiment, the oil return hole 33 and the oil return plug 23 are hermetically connected by the sealing ring 331, so that on one hand, leakage of fluid in the valve/safety valve opened to 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 by the elastic force and the elastic force generated by the pressing of the sealing ring 331, thereby preventing the problems of falling off and the like when the rotating body is inserted downward.
In this embodiment, the rotating body 2 further includes a first shoulder 24 disposed around the inner circumference of the first base ring 21, the first shoulder 24 is stopped against the upper end of the first guiding oil return plug 22, and the first shoulder 24 has a thickness that the first base ring 21 extends inward and is smaller than the thickness of the first guiding oil return plug 22, in this embodiment, it is preferable that the first shoulder 24 and the outer diameter of the guiding ring 51 of the oil passage column 5 just form a sleeved relationship, and this arrangement makes it possible to provide a reinforcing rib or other structure for controlling the oil passage, which has a thickness smaller than the first shoulder 24, on the inner wall surface of the first base ring 21, without affecting the matching between the first guiding oil return plug 22 and the positioning groove 52 (only the first guiding oil return plug 22 is thicker than the first shoulder 22 and can be inserted into the positioning groove 52), thereby providing a setting space for other functions and structures and reducing the risk of incorrect installation.
In this embodiment, the rotating body 2 further includes an extending ring 25 extending upward from the first base ring 21, the extending ring 25 is of a diameter gradually larger than the upward connection of the first base ring 21, please refer to fig. 2, the extending ring 25 is of a state of connecting with the central tube inserted into the filter element when the end cap is installed in the filter element, the diameter gradually increases to effectively prevent the elastic clip in the central tube of the filter element from abutting and falling off, and meanwhile, the stable installation of the end cap on the filter element can be realized only by simple inserting action, so that the end cap can be applied to the common filter element of the existing model for installation without structural change, thereby having good production economy and convenience.
In this embodiment, the upper end of the extension ring 25 is integrally formed with a connecting portion 251 protruding to the side surface thereof and having a hook shape, referring to fig. 2, when the extension ring is mounted to the center post of the filter element, the connecting portion 251 is just clipped on the ring body of the center post in the hook shape to form a further stable connection effect.
In this embodiment, a first sealing portion 11 with a gradually tapering horn shape extends upward from the inner ring edge of the cover body 1, a second sealing portion 252 with a horizontally extending ring shape is disposed on the outer side surface of the extending ring 25, the first sealing portion 11 and the second sealing portion 252 are mutually abutted by a structure to form a sealing connection, and a V-shaped sealing ring is disposed between them to prevent leakage of the filtered fluid.
In this embodiment, the lower surface of the cover body 1 is integrally formed with two concentrically arranged ridge-shaped driving rings 12, the rotating body 2 further includes a ring shoulder 26 extending outward from the side surface of the first base ring 21, the driving ring 12 abuts against the ring shoulder 26 so as to reduce the contact friction between them, so that the rotating body 2 and the mounting seat 3 can conveniently and smoothly rotate, and the sealing and leakage-proof effects are ensured by the structure of the multi-layer driving ring 12.
Example two
The technical solution described in the second embodiment is similar to that of the first embodiment, and the difference is that:
referring to fig. 4, in the present embodiment, the upper end of the connecting portion extending ring 25 is integrally formed with a connecting portion 251 protruding toward the side surface thereof and having a hook shape. Meanwhile, the inner ring edge of the cover body 1 extends upwards to form a first sealing part 11 with a gradually-reduced trumpet shape, the outer side surface of the extension ring 25 is provided with a second sealing part 252 with a horizontally-extending annular shape, the first sealing part 11 and the second sealing part 252 are mutually abutted through structures to form sealing connection, 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 sealing portion 11 extends to abut against the bottom surface of the connecting portion 251 (in other preferred embodiments, other structures may be used to form an abutment or a snap-fit between the connecting portion 251 and the first sealing portion 11). Therefore, 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 tapered at the end cover of the filter element, and when the filter element is installed to the filter element, 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. This structure with the impermanent fixed connection of center post has also brought the effect of convenient dismouting simultaneously, and when the dimension of carrying out the filter core was protected and is changed, the filter core end cover of this application can be convenient pull down the recovery and recycle, reduce use cost.
EXAMPLE III
The technical solution described in the third embodiment is similar to that of the second embodiment, and the difference is that:
as shown in fig. 5, 6, and 7, the oil return plug 23 in this embodiment is of a split design, and includes a base 231 integrally connected to the first base ring 21, and a movable body 232 mounted on an end of the base 231 in a snap-fit manner and movable along an axial direction thereof, wherein an outer periphery of the movable body 232 is of a circumferential umbrella shape, and is in sealing contact with an inner wall of the oil return hole 33 through a larger diameter thereof and an elastic action of the umbrella shape. When the oil return hole 33 is inserted, the edge of the movable body 232 is compressed and elastically deformed by the oil return hole 33, so that sealing is achieved and the friction force caused by the elastic deformation stops in the oil return hole 33, and meanwhile, the base 231 is continuously inserted until the rotating body 2 abuts against the mounting seat 3 because of radial movement between the base 231 and 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 in vehicle maintenance, the action of pulling out the filter element is just started, the base 231 which is integrally and rigidly connected with the filter element body is pulled up, at the moment, the movable body 232 does not act because of 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, namely, the action of pulling out is in two-section pulling out through the movable body 232 at the position and has slow stagnation action interval in the middle, the action interval ensures that oil possibly remained at the position of the oil return plug 23 has time to flow out to the outside during operation, the problem of throwing the oil out (causing pollution to working environment) when being directly pulled out is reduced, the action is the effect naturally brought by the structure, the training time for the oil to flow out by a worker without pulling out the filter element in half specially is not needed, and the cost of the worker is reduced, the possibility of throwing oil by misoperation is eliminated.
Meanwhile, in this embodiment, the rotating body 2 further includes a first shoulder 24 disposed around the inner circumference of the first base ring 21, the first shoulder 24 abuts against the upper end of the first guiding oil return plug 22, a stopping portion 241 extends inwards from the first shoulder 24, the stopping portion 241 is used for realizing downward positioning and stopping and is used for pressing the supporting ring 4 downwards to open the oil passage below the oil passage column 5, and the stopping 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. A supporting ring 4 sleeved in the rotating body 2 is further arranged between the rotating body 2 and the mounting seat 3, the supporting ring 4 is normally placed in the mounting seat 3 and is in a compressible suspension type through a small spring, the lower end of the supporting ring can be abutted to the mounting seat 3 after the spring is compressed (the spring is used for bouncing up and closing the oil liquid passage below the mounting seat to prevent leakage after a filter element is detached), the upper end of the supporting ring extends to form a second shoulder 41 abutted to the first shoulder 24, and the wall surface of the supporting ring 4 is provided with a first groove 42 which is connected with a longer abutting part 241, is provided with a guide inclined surface and is provided with a square notch at the bottom of the guide inclined surface, and a second groove 43 which is connected with the shorter abutting part 241 and is in a horizontal notch structure. When the filter element is installed, the rotating body 2 is placed downwards into the filter housing and is finally contacted with the supporting ring 4 downwards, the wall surfaces of the rotating body 2 and the supporting ring 4 are in a sleeving structure, at this time, the longer abutting part 241 can be contacted with the guiding inclined surface of the first groove 42 downwards and further pushes the supporting ring 4 to rotate (the rotating body 2 where the abutting part 241 is located cannot rotate due to the matching of the first guiding oil return plug 22 and the positioning groove 52) and can be guided to continuously descend and rotate to press open the baffle of the lower oil passage, after the longer abutting part 241 is downwards clamped into the square notch of the first groove 42, the shorter abutting part 241 is also just clamped into the second groove 43 and abutted against the second groove 43 (the correspondence between the first and second grooves is realized through parameter setting), and meanwhile, the first shoulder 24 is also abutted against the second shoulder 41, so that a good fixing and supporting effect after installation is achieved.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention fall into the protection scope of the present invention, and the technical contents of the present invention which are claimed are all described in the claims.
Claims (10)
1. The utility model provides an installation guide structure of filter core end cover, is including installing lid (1) of the ring shape of filter core lower extreme, its characterized in that still includes:
rotating body (2): the rotating body (2) is sleeved on the cover body (1) and at least comprises a first base ring (21) which is abutted against the cover body (1) and a first guide oil return plug (22) which is arranged on the inner wall of the first base ring (21) and points downwards, and the rotating body (2) can rotate relative to the cover body (1) under the action of the first guide oil return plug (22).
2. A filter cartridge end cap mounting guide structure according to claim 1, further comprising a mounting seat (3): the rotating body is sleeved on the mounting seat (3), the mounting seat (3) is in sealed connection with the rotating body (2), and the mounting seat at least comprises a second base ring (31) in sealed connection with the rotating body (2) and an oil return hole (33) located on the side face of the second base ring (31); the rotating 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. A filter element end cap mounting guide structure according to claim 2, wherein the oil return plug (23) comprises a base body (231) integrally connected with the first base ring (21) and a movable body (232) mounted at an end of the base body (231) and movable along 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. A filter element end cap installation guide structure according to claim 2, wherein the oil return hole (33) and the oil return plug (23) are hermetically connected by a seal ring (331).
5. A filter cartridge end cap assembly guide according to claim 1, wherein the rotary body (2) further comprises a first shoulder (24) circumferentially disposed on the inner circumference of the first base ring (21), the first shoulder (24) abutting against the upper end of the first guide oil return plug (22).
6. The mounting guide structure of a filter element end cover according to claim 5, wherein the first shoulder (24) extends inwards to form a stop portion (241), a support ring (4) sleeved in the rotary body (2) is further arranged between the rotary body (2) and the mounting seat (3), the lower end of the support ring (4) is stopped against the mounting seat (3), the upper end of the support ring extends to form a second shoulder (41) stopped against the first shoulder (24), and a first groove (42) connected with the first guide oil return plug (22) and a second groove (43) connected with the stop portion (241) are formed in the wall surface of the support ring (4).
7. A filter cartridge end cap mounting guide structure according to claim 1, wherein the rotary body (2) further comprises an extension ring (25) extending upward from the first base ring (21), the extension ring (25) has a gradually increasing diameter upward from the connection with the first base ring (21), and the upper end of the extension ring (25) is provided with a connecting portion (251).
8. The filter element end cover installation guide structure according to claim 7, wherein a first sealing portion (11) extends upwards from the inner ring edge of the cover body (1), a second sealing portion (252) is arranged on the outer side surface of the extension ring (25), and the first sealing portion (11) is connected with the second sealing portion (252) in a sealing mode.
9. A filter element end cap assembly guide according to claim 8, wherein the first sealing portion (11) extends to stop/snap with the connecting portion (251).
10. A filter cartridge end cap mounting guide structure according to claim 1, wherein the lower surface of the cover body (1) is provided with at least two closed rings (12), the rotating body (2) further comprises a ring shoulder (26) extending outwards from the side of the first base ring (21), and the closed rings (12) are stopped against the ring shoulder (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163860.6A CN110772873B (en) | 2019-11-25 | 2019-11-25 | Installation guide structure of filter element end cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163860.6A CN110772873B (en) | 2019-11-25 | 2019-11-25 | Installation guide structure of filter element end cover |
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| CN110772873A true CN110772873A (en) | 2020-02-11 |
| CN110772873B CN110772873B (en) | 2023-06-13 |
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