CN115342008A

CN115342008A - Variable flow filter assembly

Info

Publication number: CN115342008A
Application number: CN202211017058.8A
Authority: CN
Inventors: 冉超; 郑旭峰; 郭元凤; 姜朝辉
Original assignee: Zhejiang Ruixu Filtration Technology Co ltd
Current assignee: Zhejiang Ruixu Filtration Technology Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-11-15
Anticipated expiration: 2041-10-22
Also published as: CN115342008B; CN113775444A; CN115163357A

Abstract

The invention provides a variable flow filter assembly, which comprises a Filter Unit (FU), wherein the Filter Unit (FU) comprises an outer barrel (20) and an inner barrel (12) which are nested with each other, fluid can flow between the outer barrel (20) and the inner barrel (12) to form spiral motion, the outer barrel (20) comprises an inlet barrel (23) and an inlet assembly (24), the inlet assembly (24) comprises a sleeve (241), at least one valve sheet (242) and a stop member (243), the valve sheet (242) can move relative to the sleeve (241) under the pushing of the fluid to change the cross-sectional area allowing the fluid to pass through, the stop member (243) is used for applying force resisting the pushing of the fluid to the valve sheet (242), the outer wall of the inner barrel (12) is provided with an inner barrel baffle (121) radiating towards the radial outer side, and the inner barrel baffle (121) abuts against the inner wall of the outer barrel (20). The variable flow filter assembly according to the present invention is compact in structure, strong in filtering ability and low in manufacturing cost.

Description

Variable flow filter assembly

The invention is a divisional application of an invention patent application with the application date of 2021, 10 and 22 months, the application number of 202111231215.0 and the name of a variable flow filter assembly.

Technical Field

The present disclosure relates to the field of filters, and more particularly to a variable flow filter assembly.

Background

Chinese patent publication CN113153588a is a prior application of the present applicant, and discloses a variable flow filter that can be applied to, for example, an engine intake system of an engineering vehicle, and that can adjust the flow rate according to the flow rate of a fluid, and has a good separation capability.

To facilitate the fabrication and assembly of variable flow filters and to further increase the filtration capacity of variable flow filter assemblies, applicants have proposed an improved variable flow filter assembly.

Disclosure of Invention

The invention provides a variable flow filter assembly, which comprises a filter unit, wherein the filter unit comprises an outer barrel and an inner barrel which are nested with each other, fluid can flow into between the outer barrel and the inner barrel to form spiral motion,

the outer barrel comprises an inlet barrel and an inlet assembly, the inlet assembly comprises a sleeve, at least one valve plate and a stop piece, the sleeve is detachably arranged on the inlet barrel,

the valve plate can move relative to the sleeve under the pushing of the fluid to change the cross-sectional area allowing the fluid to pass through, and the stop piece is used for applying force to the valve plate to block the pushing of the fluid.

In at least one embodiment, the wall of the inlet cartridge is formed with a plurality of inlet cartridge connections, the wall of the sleeve is formed with a plurality of sleeve connections, and the inlet cartridge connections and the sleeve connections are matingly connected to one another.

In at least one embodiment, the stop member is a double torsion spring, the stop member comprises two energy storage parts, two ends of each energy storage part are respectively connected with a first support leg and a second support leg, two adjacent first support legs are connected together through a support leg connecting part,

a stopper mounting part is formed on the inner wall of the inlet tube, two stopper first fixing parts are formed on the edge of the valve plate, a stopper second fixing part is formed on the surface of the valve plate,

two of the stop part the energy storage part is respectively sleeved at two the first fixed part of the stop part, the leg connecting part of the stop part is matched with the second fixed part of the stop part, and the second legs of the stop part are fixed at the stop part mounting part.

In at least one embodiment, the inlet assembly further includes two bearings, the sleeve is formed with two rotation connection portions, an outer ring of each of the bearings is embedded in one of the rotation connection portions, and the valve sheet is non-rotatably connected to an inner ring of the bearing.

In at least one embodiment, the valve plate includes a main blocking surface and a bead, the bead is located at one end of the main blocking surface away from the rotation axis of the valve plate, and the bead is inclined or curled toward the opposite direction of opening of the valve plate relative to the main blocking surface.

In at least one embodiment, the outer wall of the inner barrel is formed with inner barrel baffles radiating radially outward, the inner barrel baffles abutting against the inner wall of the outer barrel.

In at least one embodiment, the length of the inner barrel baffle in the axial direction of the outer barrel covers at least the length of the inlet barrel.

In at least one embodiment, the inner barrel is formed from a base comprising a base plate and at least one inner barrel,

the outer cylinder is mounted on the substrate.

In at least one embodiment, the variable flow filter assembly further comprises an outlet cartridge connected to the base plate and having an axis parallel to an axis of the inner cartridge, the fluid filtered through the filter unit being able to flow into the outlet cartridge.

In at least one embodiment, the filter unit is provided in plurality,

a plurality of said filter units are arranged side by side on one side of said outlet barrel, or

A plurality of said filter units are arranged side by side on both sides of said outlet tube, or

A plurality of the filter units are disposed around the outlet cartridge.

In at least one embodiment, at least one outlet cartridge baffle is formed in the outlet cartridge, which outlet cartridge baffle divides a partial region of the outlet cartridge in the axial direction into a plurality of outlet cartridge regions, into which different outlet cartridge regions fluid from at least two different filter units can flow.

In at least one embodiment, the outlet barrel comprises a first section, a second section and a third section in order in the axial direction in the flow direction of the fluid,

in an axial direction perpendicular to the outlet barrel, the outer profile of the cross section of the first section is kidney-shaped, the cross section of the third section is circular, and the sectional area of the third section is smaller than that of the first section.

The variable flow filter assembly according to the present invention is compact in structure, strong in filtering ability and low in manufacturing cost.

Drawings

FIG. 1 is a schematic view of a variable flow filter assembly according to a first embodiment of the present application.

Fig. 2 is a partially exploded schematic view of the variable flow filter assembly of fig. 1.

Fig. 3 is a schematic view of a base of the variable flow filter assembly of fig. 1.

FIG. 4 is a schematic view of the outer cartridge of the variable flow filter assembly of FIG. 1.

Fig. 5 is an exploded schematic view of the outer tub in fig. 4.

Fig. 6 is a partially exploded schematic view of the outer barrel of fig. 5.

Fig. 7 is a schematic view of a valve plate on the outer cartridge of fig. 4.

Fig. 8 is a schematic view of a partial structure of the outer tub in fig. 5.

Fig. 9 is a schematic view of the variable flow filter assembly of fig. 1 taken perpendicular to the axial direction.

Fig. 10 and 11 are schematic views of a variable flow filter assembly according to a second embodiment of the present application.

Fig. 12 and 13 are schematic views of a variable flow filter assembly according to a third embodiment of the present application.

Description of reference numerals:

f a variable flow filter assembly; an FU filtration unit; an F0 inlet; a first outlet F1; a second outlet for F2; an FE outlet cartridge; an FE1 first section; a FE2 second segment; FE3 third section; an FE4 outlet drum baffle;

10, a base; 11 a substrate; 12, an inner barrel; 121 inner cylinder baffle plates;

20, an outer cylinder; 20a ear mount; 21 a main cylinder; 22 a variable diameter section; 23 an inlet barrel; 23a inlet cartridge connection; 23b a stopper mounting portion;

24 an inlet assembly; 241 sleeve; 241a sleeve connecting part; 241b a rotation connecting part; 242 valve plate; 2421 a primary stop surface; 2422, curling; 2423 a stopper first fixing part; 2424 a stopper second fixing part; 2425 rotating the shaft; 243 stop piece; 2430 an energy storage portion; 2431 a first leg; 2432 a second leg; 2433 a leg connecting portion; 244 bearing.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is intended only to teach one skilled in the art how to practice the invention, and is not intended to be exhaustive or to limit the scope of the invention.

The present invention is an improvement upon chinese patent publication CN113153588a, which is hereby incorporated by reference in its entirety for all purposes.

A variable flow filter assembly according to the present invention will be described with reference to fig. 1 to 13, taking as an example a filter device applied to an intake system of an engine of a working vehicle.

Unless otherwise noted, reference to FIGS. 1 and 2,A indicates the axial direction of the variable flow filter assembly, which axis A coincides with the axial direction of the main cartridge 21 of the filter unit FU.

(first embodiment)

First, referring to fig. 1 to 9, a variable flow rate filter assembly F according to a first embodiment of the present invention will be described.

Referring to fig. 1, the variable flow filter assembly F includes two filter units FU and an outlet cartridge FE. Each filter unit FU is a cyclone filter formed with an inlet F0, a first outlet F1 and a second outlet F2. Air flows into the filtering unit FU from the inlet F0 under the action of negative pressure, and clean air after cyclone separation flows to the outlet barrel FE; the impurities are discharged through the second outlet F2. The arrows filled by shading in fig. 1 show the flow direction of the fluid.

Referring to FIG. 2, each filter unit FU comprises an outer cartridge 20 and an inner cartridge 12. The inner tube 12 and the outlet tube FE are integrated with the substrate 11 to form a base 10 for easy installation. In other words, from the perspective of the individual components, the variable flow filter assembly F comprises a base 10 and two outer cartridges 20; the outlet cartridge FE and the inner cartridge 12 of the filter unit FU are formed integrally with the base plate 11.

The outer cylinder 20 may be fixed to the base 10 by a connector such as a screw. For example, referring to fig. 4, one end of the outer barrel 20 is provided with two ear seats 20a for engaging with screws.

Each outer barrel 20 includes a main barrel 21, a reducer section 22, an inlet barrel 23, and an inlet assembly 24. The main cylinder 21, the reducer section 22, and the inlet cylinder 23 are integrally formed, and hereinafter, may be simply referred to as a cylinder base. The inlet assembly 24 is removably mounted with the cartridge base.

The main cylinder 21 has a substantially cylindrical shape. The inlet cylinder 23 is provided at one end portion in the axial direction a of the main cylinder 21, and the inlet cylinder 23 extends in a direction perpendicular to the axial direction a and substantially in a tangential direction of a cross-sectional circle of the inlet cylinder 23. The diameter-changing section 22 has a substantially conical cylindrical shape. The reducing section 22 is provided at the other end portion in the axial direction a of the main cylinder 21, and is away from the inlet cylinder 23 in the axial direction a, and the inner diameter of the reducing section 22 is gradually reduced.

Referring to fig. 4 to 6, an inlet assembly 24 is installed at an opening of the inlet cylinder 23. The inlet assembly 24 includes a sleeve 241, a valve plate 242, a stop 243 and two bearings 244.

The sleeve 241 can be sleeved on the inlet barrel 23, and the sleeve 241 provides a base for installing the valve sheet 242. In the present embodiment, a plurality of sleeve connecting portions 241a, specifically, through holes formed in the wall, are formed in the wall of the sleeve 241; a plurality of inlet cylinder connection portions 23a, specifically, protrusions protruding from the outer wall surface, are formed on the wall of the inlet cylinder 23. The sleeve connecting portion 241a is engaged with the inlet cylinder connecting portion 23a, and in this embodiment, is shown as being engaged with each other, so that the sleeve 241 is fixed to the inlet cylinder 23 in a manner that facilitates mounting and dismounting. It should be understood that the sleeve 241 and the inlet barrel 23 may also be connected to each other using other connection structures.

The sleeve 241 forms two rotation coupling portions 241b at one side close to the axis of the main cylinder 21, and the rotation coupling portions 241b are used for mounting the bearing 244. The line connecting the two rotation connecting portions 241b is parallel to the axial direction a, so that the valve sheet 242, which is completely mounted, can rotate about the line connecting axis of the two rotation connecting portions 241 b.

The valve sheet 242 includes a main barrier 2421, a bead 2422, a stopper first fixing part 2423, a stopper second fixing part 2424 and two rotating shafts 2425.

The main damper 2421 is sheet-shaped. One side of the main baffle 2421 is a connecting part for mounting the main baffle 2421 on the sleeve 241; the other side of the main baffle 2421 is an opening part for forming an opening with the sleeve 241 in the process that the main baffle 2421 rotates along with the pushing of the fluid.

The bead 2422 is located at an opening portion of the main flap 2421. The surface of the bead 2422 is inclined to the outside of the filter unit FU (or to the opposite direction of the opening direction of the valve sheet 242) with respect to the surface of the main barrier 2421, or the bead 2422 is curled or bent to the outside of the filter unit FU with respect to the main barrier 2421. This allows the valve plate 242 to have a large contact area with the fluid, and improves the efficiency of the fluid pushing the valve plate 242 to rotate.

The two rotating shafts 2425 are in a short column shape and are respectively located at two ends of the side where the connecting part of the main baffle 2421 is located. The outer ring of the bearing 244 is embedded in the rotation connecting portion 241b, or the outer ring of the bearing 244 is non-rotatably connected with the rotation connecting portion 241 b; the rotating shaft 2425 is embedded in the inner ring of the bearing 244, or the rotating shaft 2425 and the inner ring of the bearing 244 are connected in a non-rotatable manner. Therefore, under the thrust of fluid with different magnitudes, the valve plate 242 can flexibly rotate relative to the sleeve 241, so as to change the cross-sectional area allowing airflow to pass through and dynamically adjust the air inflow.

A stopper 243 is provided between the valve sheet 242 and the inlet tube 23 for providing the valve sheet 242 with a suitable amount of force to block the force pushed by the fluid. In the present embodiment, the stop 243 is a double torsion spring having two energy accumulating portions 2430 in the form of coil springs. Two ends of each energy storage part 2430 extend to form a support leg, the support legs of the two energy storage parts 2430 close to each other are called first support legs 2431, and the support legs far away from each other are called second support legs 2432. The two first legs 2431 are connected together by a leg connecting portion 2433 to form a snap-fit structure, which cooperates with a second stopper fixing portion 2424 described below to facilitate the fixing of the stopper 243 to the valve sheet 242.

The stopper 243 in the form of a double torsion spring can provide a stable resistance force of a large strength to the valve sheet 242 and also facilitate the installation of the stopper 243.

Referring also to fig. 7, the outer surface (surface facing the outside of the filter unit FU) of the main barrier 2421 of the valve sheet 242 is formed with a stopper second fixing part 2424 turned up to the outside. A gap is formed between the second fixing part 2424 of the stopper and the main baffle 2421, and the gap is used for accommodating the leg connecting part 2433, so that the stopper 243 can be hooked with the valve sheet 242.

Referring back to fig. 5, two first stopper fixing parts 2423 of a short column shape spaced apart in the axial direction a are formed at a portion between the two rotating shafts 2425 of the valve sheet 242, and a connection line between the rotating shaft 2425 and the first stopper fixing parts 2423 passes through a rotation axis of the valve sheet 242.

Each energy accumulating portion 2430 of the stopper 243 can be fixed by being sleeved outside one first stopper fixing portion 2423.

Referring to fig. 5, 6 and 8 together, the inner wall of the inlet cylinder 23 is formed with an inlet cylinder connection part 23b. The inlet cylinder connection portion 23b forms a slit which is penetrated by just the two second legs 2432 of the stopper 243 so that the second legs 2432 can be fixed with respect to the inlet cylinder 23 and brought into abutment.

It should be understood that, since the sleeve 241 is sleeved on the inlet cylinder 23, in other possible embodiments, the fixing portion of the second leg 2432 may be disposed on the inner wall of the sleeve 241.

During installation, for example, the valve plate 242 may be first installed on the sleeve 241 through the bearing 244; then the stopper 243 is mounted to the valve sheet 242; finally, the sleeve 241 is mounted to the inlet cylinder 23 with the second leg 2432 fixed to the inlet cylinder connection portion 23b.

Next, referring to fig. 1, 2, 3, and 9, the inner barrel 12 and the outlet barrel FE will be described.

The inner barrel 12 is substantially tubular. An inner cylinder baffle 121 radiating radially outward is formed on the outer wall of the inner cylinder 12. In the radial direction of the inner cylinder 12, the inner cylinder baffle 121 abuts against the inner wall of the main cylinder 21, thereby forming a barrier between the inner cylinder 12 and the main cylinder 21. In the circumferential direction of the inner cylinder 12, the inner cylinder damper 121 is located substantially at the position of the connecting portion of the main damper 2421 of the valve sheet 242, i.e., the rotating shaft 2425. In the axial direction a of the inner cylinder 12, the length of the inner cylinder baffle 121 is substantially equal to or slightly greater than the length of the inlet cylinder 23, or the length of the inner cylinder baffle 121 at least covers the length of the inlet cylinder 23.

The barrier formed by the inner barrel baffle 121 within the outer barrel 20 is such that: the air flow just entering the outer tube 20 through the inlet tube 23 does not collide with the air flow in the outer tube 20 that has spirally flowed around the inner tube 12, thereby reducing the loss of kinetic energy of the air flow.

In the present embodiment, since the air flow flowing out from the first outlet F1 formed by the two inner cylinders 12 is further guided (for example, by providing the base 10 with an upper cover) to the outlet cylinder FE, the outlet cylinder FE has a larger opening near the end in the axial direction a where the air flow flows in. While in order to make the device compact, the outlet barrel FE optionally has a smaller opening in the axial direction a near the end from which the gas flows out.

Specifically, with reference to fig. 2 and 3, the outlet cartridge FE comprises, in the axial direction, in succession, a first section FE1, a second section FE2 and a third section FE3, in the direction of flow of the gas flow.

In an axial direction perpendicular to the outlet barrel FE, the outer cross-sectional profile of the first section FE1 is substantially kidney-shaped (or oblong), the cross-section of the third section FE3 is circular, and the cross-sectional area of the third section FE3 is smaller than the cross-sectional area of the first section FE 1. The second section FE2 is generally flat and funnel-shaped to connect the first section FE1 and the third section FE3.

In order to prevent the flows from the two filter units FU from colliding with each other after flowing into the outlet cartridge FE, an outlet cartridge baffle FE4 is formed in the outlet cartridge FE (see fig. 9). Preferably, in the axial direction a, the length of the outlet cartridge baffle FE4 is not less than 50mm, and the outlet cartridge baffle FE4 is located at the inlet of the first section FE 1. In addition, the setting of an export section of thick bamboo baffle FE4 has strengthened the holistic structural strength of an export section of thick bamboo FE still as internal stay structure.

(second embodiment)

A variable flow filter assembly according to a second embodiment of the present invention will be described with reference to fig. 10 and 11. The second embodiment is a modification of the first embodiment, and the same reference numerals are used in the present embodiment for the same or similar features as those of the first embodiment, and detailed descriptions of these features are omitted.

In the first embodiment, the plurality of filtration units FU are distributed on the same side of the outlet cartridge FE; in the present embodiment, however, the plurality of filter units FU are arranged in parallel on both sides of the outlet cartridge FE.

Specifically, the number of the filter units FU in this embodiment is 4, the 4 filter units FU are divided into two groups of 2, one group of filter units FU is disposed at one side of the outlet cartridge FE, and each group of 2 filter units FU is arranged along the long side of the kidney-shaped first section FE1 of the outlet cartridge FE.

Preferably, with reference to FIG. 11,4, the inlets F0 of the filter units FU are oriented in a total of two, either direction D1 or direction D2. The certainty of the air inlet direction can facilitate the arrangement of other components outside the variable flow filter assembly, so that the other components do not block the inlet F0.

(third embodiment)

A variable flow rate filter assembly according to a third embodiment of the present invention will be described with reference to fig. 12 and 13. The third embodiment is a modification of the second embodiment, and the same reference numerals are used in the present embodiment for the same or similar features as those of the second embodiment, and detailed descriptions of these features are omitted.

In this embodiment, a plurality of filter units FU are disposed around the periphery of the outlet cartridge FE. This arrangement is particularly suitable for filter units FU of greater than or equal to 5, for example, in this embodiment, there are 7 filter units FU.

Since the filter units FU can be evenly distributed over the outer circumference of the outlet cartridge FE, the outlet cartridge FE can be arranged as a cylindrical cartridge.

Although in fig. 12 and 13, the plurality of inlets F0 are oriented substantially perpendicular to a line connecting the centers of the cross sections of the inlet barrel FE and the inner barrel 12, this allows the air intake direction of the entire variable flow filter assembly to be uniformly distributed in the circumferential direction; this arrangement is not necessary and other orientations of the inlet F0 may be selected to make the variable flow filter assembly compact without interfering with other components and without the inlet F0 being blocked.

It will be appreciated that the above described embodiments and some of their aspects or features may be combined as appropriate.

The invention has at least one of the following advantages:

(i) The inlet assembly 24 and the inlet cylinder 23 of the variable flow filter assembly F according to the present application are manufactured and installed separately, and the inlet assembly 24 has a modular feature, which facilitates manufacturing and assembly.

(ii) The valve plate 242 provides the variable flow filter assembly F with a function of varying inlet flow rate according to the magnitude of the airflow, and the bead 2422 of the valve plate 242 makes the windward area of the valve plate 242 larger, and has a good effect of responding to the thrust of the airflow.

(iii) The stopper 243 in the form of a double torsion spring can provide a stable stopping force and facilitate the installation of the stopper 243 with the valve sheet 242 and the inlet tube 23.

(iv) The use of the bearing 244 makes the opening and closing of the valve plate 242 smooth and has small frictional resistance.

(v) The inner cartridge 12 and the outlet cartridge FE of the filter unit FU are integrated to form a part of the base 10, so that the apparatus has a simple structure and high structural strength.

(vi) The outer cartridge 20 of the filter unit FU can be mounted to the base 10 by, for example, screws, for ease of installation.

(vii) One outlet cartridge FE can be fitted with multiple filter units FU, so that the entire variable flow filter assembly F has a high filtering capacity, and the shape and dimensions can be adapted as desired.

(viii) An outlet barrel baffle plate FE4 is arranged in the outlet barrel FE, so that the guiding effect on the air flow from the plurality of filter units FU is achieved, and the pressure loss caused by air flow disorder is avoided.

Of course, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various modifications to the above-described embodiments of the present invention without departing from the scope of the present invention under the teaching of the present invention. For example:

(i) The present application proposes a solution for integrating the filtration units FU in a modular form into the variable flow filter assembly, based on the idea of the solution, a person skilled in the art can reasonably set a plurality of filtration units FU in a proper number and in a proper arrangement according to the specific situation of the use environment (e.g. installation space size, etc.).

(ii) The shape of the outlet cartridge FE can be varied as desired, depending on the number of filter units FU.

(iii) The specific configuration and number of the outlet cartridge baffles FE4 can be varied accordingly depending on the number of filter units FU so that the number and location of the outlet cartridge zones separated by the outlet cartridge baffles FE4 can be adapted to the first outlets F1 of a plurality of filter units FU.

(vi) The number of the valve plates 242 of the filter unit FU may be more than one, and a plurality of valve plates may be located at the same depth in the axial direction of the inlet cartridge 23 or at different depths. The valve plates can enable the accuracy of sectional area change to be higher, and the valve plates can also serve as redundant designs to improve the reliability of the device.

(v) The filter according to the invention is not limited to filtering air but can also be used for filtering other fluids.

Claims

1. A variable flow filter assembly comprising a Filter Unit (FU) comprising an outer cartridge (20) and an inner cartridge (12) nested within each other, fluid being able to flow between the outer cartridge (20) and the inner cartridge (12) to form a helical movement, characterized in that,

the outer barrel (20) comprises an inlet barrel (23) and an inlet assembly (24), the inlet assembly (24) comprises a sleeve (241), at least one valve sheet (242) and a stop piece (243),

the valve plate (242) can move relative to the sleeve (241) under the pushing of the fluid to change the cross-sectional area allowing the fluid to pass through, the stop piece (243) is used for applying force to the valve plate (242) to block the pushing of the fluid,

an inner cylinder baffle (121) radiating to the radial outer side is formed on the outer wall of the inner cylinder (12), and the inner cylinder baffle (121) is abutted to the inner wall of the outer cylinder (20).

2. The variable flow filter assembly according to claim 1, wherein the length of the inner cartridge baffle (121) covers at least the length of the inlet cartridge (23) in the axial direction of the outer cartridge (20).

3. The variable flow filter assembly according to claim 1, wherein the sleeve (241) is removably mounted to the inlet barrel (23).

4. The variable flow filter assembly according to claim 3, wherein the wall of the inlet barrel (23) is formed with a plurality of inlet barrel connection portions (23 a), the wall of the sleeve (241) is formed with a plurality of sleeve connection portions (241 a), and the inlet barrel connection portions (23 a) and the sleeve connection portions (241 a) are matingly connected to each other.

5. The variable flow filter assembly according to claim 1, wherein the stopper (243) is a double torsion spring, the stopper (243) includes two energy accumulating portions (2430), one first leg (2431) and one second leg (2432) are respectively connected to both ends of each energy accumulating portion (2430), two adjacent first legs (2431) are connected together by a leg connecting portion (2433),

the inner wall of the inlet tube (23) is formed with a stopper mounting part (23 b), the edge of the valve sheet (242) is formed with two first fixing parts (2423) of the stopper, the surface of the valve sheet (242) is formed with a second fixing part (2424) of the stopper,

the two energy storage parts (2430) of the stop part (243) are respectively sleeved on the two first stop part fixing parts (2423), the leg connecting part (2433) of the stop part (243) is matched with the second stop part fixing part (2424), and the two second legs (2432) of the stop part (243) are fixed on the stop part mounting part (23 b).

6. Variable flow filter assembly according to claim 1, wherein the inlet assembly (24) further comprises two bearings (244), the sleeve (241) being formed with two rotary connections (241 b), an outer ring of each bearing (244) being embedded in one of the rotary connections (241 b), the valve plate (242) being non-rotatably connected to an inner ring of the bearing (244).

7. The variable flow filter assembly according to claim 1, wherein the valve plate (242) includes a main stop surface (2421) and a bead (2422), the bead (2422) being located at an end of the main stop surface (2421) distal from the rotational axis of the valve plate (242), the bead (2422) being inclined or curled relative to the main stop surface (2421) in a direction opposite to the direction in which the valve plate (242) opens.

8. A variable flow filter assembly according to any one of claims 1 to 7, wherein the inner cartridge (12) is formed from a base (10), the base (10) comprising a base plate (11) and at least one inner cartridge (12),

the outer cylinder (20) is attached to the substrate (11).

9. The variable flow filter assembly according to claim 8, further comprising an outlet cartridge (FE) associated with said base plate (11) and having an axis parallel to the axis of said inner cartridge (12), said outlet cartridge (FE) being able to be flown by the fluid filtered by said Filtering Unit (FU).

10. Variable flow filter assembly according to claim 9, characterised in that said Filtering Unit (FU) is a plurality of,

a plurality of said Filter Units (FU) being arranged side by side on one side of said outlet cartridge (FE), or

A

A plurality of said Filter Units (FU) being arranged side by side on both sides of said outlet cartridge (FE), or

A

A plurality of said Filter Units (FU) are arranged around said outlet cartridge (FE).

11. The variable flow filter assembly according to claim 10, wherein at least one outlet bobbin baffle (FE 4) is formed in the outlet bobbin (FE), said outlet bobbin baffle (FE 4) dividing a partial region of the outlet bobbin (FE) in an axial direction into a plurality of outlet bobbin regions, into which different outlet bobbin regions the fluid from at least two different Filter Units (FU) can flow.

12. Variable flow filter assembly according to claim 10, wherein the outlet cartridge (FE) comprises, in the direction of flow of the fluid, a first section (FE 1), a second section (FE 2) and a third section (FE 3) in the order named in the axial direction,

in the axial direction perpendicular to the outlet barrel (FE), the outer profile of the cross section of the first section (FE 1) is kidney-shaped, the cross section of the third section (FE 3) is circular, and the sectional area of the third section (FE 3) is smaller than that of the first section (FE 1).