CN220939389U - Stacked deep filter and filter assembly - Google Patents

Abstract

The utility model discloses a stacked deep filter and a filter assembly, wherein the stacked deep filter comprises a shell and a plurality of deep filter cores which are axially stacked in an inner cavity of the shell, the shell comprises an upper shell and a lower shell with a central hole, a plurality of through holes are circumferentially arranged on the outer side of the central hole, a plurality of inner cavity ribs which are radially arranged from the center outwards are arranged on the bottom surface of the inner cavity of the shell, the inner cavity ribs comprise supporting ribs and flow guide ribs which are arranged between the adjacent supporting ribs, and the height of the flow guide ribs is lower than that of the supporting ribs. The utility model aims to improve the overall strength of the shell, ensure the stability and the tightness of the filter and effectively prevent the filtering performance of the filter element from being influenced by the deformation of the shell.

Description

Stacked deep filter and filter assembly

Technical Field

The utility model belongs to the field of filters, and particularly relates to a stacked deep filter.

Background

Stacked filters are commonly used for prefiltering, and different numbers of filter cartridges can be selected to be stacked together to form a stacked filter according to practical needs, and the filter cartridges are pressed through a housing to form a seal. In the actual operation process, under the impact of large flow, the overall strength of the shell is lower, and the shell is easy to deform, so that the sealing effect of the shell on the filter element is reduced, and the filtering performance of the filter element is influenced.

Disclosure of utility model

The utility model provides a stacked deep filter and a filter assembly, which improve the overall strength of a shell, ensure the stability and the tightness of the filter and effectively prevent the filtration performance of a filter element from being influenced by the deformation of the shell.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a stacked deep filter, includes the shell and along a plurality of deep filter cores of axial stack arrangement in the inner chamber of shell, the shell is including the epitheca and the inferior valve that have the centre bore, the outside of centre bore is encircleed and is provided with a plurality of through-holes, the inner chamber bottom surface of shell is equipped with a plurality of by the outside radial inner chamber rib that arranges of center, the inner chamber rib includes the supporting rib and sets up the water conservancy diversion muscle between adjacent supporting rib, water conservancy diversion muscle height is less than the supporting rib height. The inner cavity ribs can effectively strengthen the strength of the bottom plane of the shell and prevent the filter from deforming in the use process, so that the connection stability of the upper shell and the lower shell on the inner ring and the outer ring is ensured. The support rib can play a supporting role on the deep filter element in the inner cavity, the surface of the deep filter element is prevented from being attached to the bottom surface of the inner cavity, and meanwhile, the liquid between the support ribs can be effectively guided by the guide rib, so that smooth liquid inlet is ensured.

Preferably, one end of the inner cavity rib close to the central hole is provided with a columnar rib end, and the section diameter of the rib end is larger than the width of the inner cavity rib. Because the pressure born by the deep filter element at the middle position is larger, the deep filter element is easy to break when being contacted with the end face of the rib of the inner cavity, and the edge of the end part of the cylindrical rib is arc-shaped, so that the deep filter element is uniformly stressed when being contacted, and the deep filter element can be prevented from being damaged. When the inner cavity ribs support the deep filter element, the ends of the ribs have larger contact areas, so that the contact pressure can be further reduced, and the filter medium inside the deep filter element is prevented from being damaged. Meanwhile, the air trapping phenomenon of the inner cavity ribs during injection molding can be improved at the end parts of the ribs, the internal stress of the inner cavity ribs is reduced, and the strength of the inner cavity ribs is increased, so that the effect of increasing the strength of the shell is achieved.

Preferably, the outer surface of the shell is provided with outer reinforcing ribs, each outer reinforcing rib comprises radial ribs extending outwards from the center and circumferential ribs connected with each radial rib, and the outer reinforcing ribs and the inner cavity ribs are arranged in a staggered mode. The inner cavity ribs of the outer reinforcing ribs and the inner cavity ribs of the upper shell and the lower shell are distributed in a staggered mode, so that the strength of a bottom plane can be effectively enhanced, and deformation of the filter in the use process is prevented.

Preferably, the number of the supporting ribs is 8 to 16, the height of the supporting ribs is 2 to 8mm, and the width of the supporting ribs is 1 to 4mm. The deep filter element can be effectively supported when the number of the supporting ribs is 8-16, but the supporting effect can not be achieved when the number of the supporting ribs is small, so that part of the deep filter element falls down, and the excessive number of the supporting ribs can cause the overlarge contact area between the filter medium and the ribs so as to lose the effective filter area. The support rib needs to ensure certain height and certain width, and when the height of the support rib is lower than 2mm and the width is smaller than 1mm, the filter is deeply stuck to the bottom surface of the shell under the action of gravity in the use process, so that the liquid inlet is not smooth. The supporting rib is higher than 8mm in height, can lead to cavity bottom space not by the complete utilization, and waste cost, when the width is greater than 4mm, supporting rib and deep filter core area of contact are great, influence filtration area, lead to filtration efficiency to reduce.

Preferably, the number of the guide ribs between the supporting ribs is 1 to 3, the height of the guide ribs is 1 to 4mm, and the width of the guide ribs is 1 to 4mm. When the number of the supporting ribs is greater than 3, more inner cavity ribs exist on the ground of the inner cavity of the shell or the width is large, the flow passage area of liquid can be seriously influenced, and the pressure required by fluid filtration is increased. When the water conservancy diversion muscle height is higher, the upper end of water conservancy diversion muscle contacts the submerged deep filter core, leads to the filtration area reduction of deep filter core, influences filtration efficiency. Preferably, the outer ring of the upper shell and the outer ring of the lower shell are welded and sealed and fixed, an upper shell lock catch is arranged on the inner ring of the central hole of the upper shell, a lower shell lock catch is arranged on the inner ring of the central hole of the lower shell, the upper shell lock catch and the lower shell lock catch are arranged in a staggered mode along the circumferential direction of the central hole, and the upper shell lock catch and the lower shell lock catch are mutually buckled so that the upper shell and the lower shell are sealed by extrusion on the central part of the deep filter element. The upper shell and the lower shell of the shell are fixed on the outer ring of the shell through welding, so that the tightness and the fixing effect of the outer ring of the shell are ensured. The inner rings of the upper shell and the lower shell are connected in a locking manner, so that the connection strength of the inner rings is improved, and the upper shell and the lower shell continuously keep a pressing effect on the central part of the deep filter element when the filter runs at a large flow rate, so that the stable and reliable filtering process is ensured.

Preferably, the upper shell lock catch and the lower shell lock catch comprise a first lock catch part and a second lock catch part, and one end of the first lock catch part is connected with the middle part of the second lock catch part to form a T-shaped structure. The upper shell lock catch and the lower shell lock catch are interlocked through corresponding T-shaped structures, and the fact that the stress on the two sides of the upper shell lock catch or the stress on the two sides of the lower shell lock catch are consistent is guaranteed, so that the compression force on the deep filter element is even.

Preferably, a gap is arranged between the upper shell lock catch and/or the lower shell lock catch and the corresponding inner ring of the central hole, the upper shell lock catch and/or the lower shell lock catch are connected with the corresponding center Kong Najuan through a connecting part, and a reinforcing rib is arranged on the connecting part. Therefore, after the upper shell lock catch is matched with the lower shell lock catch, the pressing force of the inner ring on the deep filter element can be further amplified, and the sealing effect of the shell on the deep filter element is improved.

Preferably, the top end of the second locking portion is provided with an inclined guide surface, and the inclined angle of the guide surface relative to the axial direction of the central hole is 10 ° to 40 °. The upper shell lock catch and the lower shell lock catch play a role in guiding in the buckling process, and the situation that dislocation impact damage occurs to the lock catches at two sides is prevented.

Preferably, the contact area between the upper shell lock catch and the adjacent lower shell lock catch is 2-10 cm ², and the contact area accounts for 50% -70% of the cross section area of the second lock catch part. The proper contact area is selected to reduce the buckling pressure, and meanwhile, the strength of the lock catch is ensured, so that the service life is prolonged.

The utility model provides a stacked depth filter subassembly, includes upper cover and lower cover, be equipped with at least one stacked depth filter between upper cover and the lower cover, upper cover and lower cover are equipped with respectively with stacked depth filter's centre bore intercommunication first pipeline and with stacked depth filter's through-hole intercommunication second pipeline.

Preferably, the upper cover and the lower cover are both provided with a central groove communicated with the first pipeline, and the central groove corresponds to the central hole position of the stacked deep layer filter.

Preferably, the upper cover and the lower cover are respectively provided with an annular groove communicated with the second pipeline, and the annular grooves correspond to the through holes of the stacked deep-layer filter.

Preferably, when a plurality of stacked deep filters are arranged between the upper cover and the lower cover, the central holes and the through holes between the adjacent stacked deep filters are respectively communicated correspondingly.

The beneficial effects of the utility model are as follows: (1) The shell improves the strength of the shell through the inner cavity ribs, and plays roles of guiding and supporting the deep filter element; (2) The outer reinforcing ribs are matched with the inner cavity ribs, so that the overall strength of the shell is enhanced, the sealing performance of the outer ring and the inner ring of the shell is further improved, and the filtering effect is ensured; (3) The inner and outer connection of the upper shell and the lower shell ensures the connection strength and the sealing performance, and improves the filtering stability; (4) The buckling process between the upper shell lock catch and the lower shell lock catch is rapid and convenient, the connection between the lock catches is stable and reliable, and the sealing performance of the filter is effectively ensured; (5) The end parts of the ribs of the inner cavity lead the compression force applied to the filter medium of the inner deep filter element to be evenly distributed, thereby being beneficial to keeping the integrity of the deep filter element.

Drawings

FIG. 1 is a schematic illustration of a stacked depth filter of the present utility model;

FIG. 2 is a schematic view of the internal structure of a stacked depth filter according to the present utility model;

FIG. 3 is a schematic view of the lower shell structure of the present utility model;

FIG. 4 is a schematic view of the upper shell structure of the present utility model;

FIG. 5 is a schematic view of the partial structure at the inner periphery of the upper shell of the present utility model;

FIG. 6 is a schematic view of the distribution structure of the upper shell latch on the inner ring of the present utility model;

FIG. 7 is a schematic view of the structure of the upper shell latch of the present utility model;

FIG. 8 is a schematic view of a stacked depth filtration assembly according to the present utility model;

fig. 9 is a schematic view of the structure of the upper cover of the present utility model.

In the figure: the shell 1, the upper shell 11, the lower shell 12, the lower shell lock 13a, the upper shell lock 13b, the outer reinforcement 14, the circumferential rib 14a, the radial rib 14b, the center hole 15, the connecting portion 16, the reinforcement rib 16a, the inner cavity rib 17, the support rib 17a, the guide rib 17b, the rib end 171, the inner ring 18, the through hole 19, the second lock 131, the first lock 132, the guide surface 133, the cross section 134, the contact surface 135, the guide surface 101, the inner cavity bottom 102, the stacked deep filter 10, the deep filter element 2, the upper cover 2a, the lower cover 2b, the first pipe 21, the center groove 22, the second pipe 23, and the annular groove 24.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

In the embodiment shown in fig. 1 and 2, a stacked depth filter comprises a housing 1 and a plurality of depth cartridges 2 stacked in an axial direction in an inner cavity of the housing 1, wherein the housing 1 comprises an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 are provided with a central hole 15 so as to facilitate a liquid flowing along a central channel formed by the central hole 15. The outer ring of the upper shell 11 and the outer ring of the lower shell 12 are fixed in a welding mode, and the outer ring of the upper shell 11 and the outer ring of the lower shell 12 are kept in sealing connection after welding. The inner ring 18 of the central hole 15 of the upper shell 11 is provided with an upper shell lock catch 13b, the inner ring 18 of the central hole 15 of the lower shell 12 is provided with a lower shell lock catch 13a, and the upper shell lock catch 13b is matched with the lower shell lock catch 13a in a clamping way, so that the upper shell 11 and the lower shell 12 squeeze and seal the central part of the deep filter element 2, and the inner ring 18 between the upper shell 11 and the lower shell 12 positions the deep filter element 2. The upper and lower shells 11 and 12 also have a plurality of through holes 19 disposed around the central hole 15, and the through holes 19 communicate with the inner cavity of the outer shell 1 to facilitate the smooth in-out and out of the liquid.

As shown in fig. 3 and 4, the upper shell 11 and the lower shell 12 are provided with a plurality of inner cavity ribs 17 on the inner cavity bottom surface 102, and the inner cavity ribs 17 are radially arranged from the center outwards. The inner cavity ribs 17 comprise supporting ribs 17a and guide ribs 17b, wherein the number of the supporting ribs 17a is 8-16, the height of the supporting ribs 17a is 2-8 mm, and the width of the supporting ribs 17a is 1-4 mm. The guide ribs 17b are arranged between the adjacent support ribs 17a, the number of the guide ribs 17b between the support ribs 17a is 1 to 3, the height of the guide ribs 17b is 1 to 4mm, and the width of the guide ribs 17b is 1 to 4mm. In combination with the illustration of fig. 2, the top of the supporting ribs 17a is in contact with the surface of the deep filter element 2, and a certain number of supporting ribs 17a can support the filter media on the surface of the deep filter element 2, so that a liquid inlet channel between the deep filter element 2 and the bottom surface 102 of the inner cavity is reserved, the filter media and the bottom surface 102 of the inner cavity are prevented from being attached, and the filtering resistance is reduced. When the filter element is arranged, the height of the guide rib 17b is lower than that of the support rib 17a, so that the guide rib 17b is prevented from contacting the deep filter element 2, and the guide rib 17b is favorable for achieving a sufficient guide effect.

As shown in fig. 5, the end of the cavity rib 17 near the center hole 15 is provided with a rib end 171 in a column shape, and the cross-sectional diameter of the rib end 171 is larger than the width of the cavity rib 17. In this embodiment, the bead ends 171 are cylindrical to minimize the effect on the flow of liquid. The cylindrical rib end 171 can effectively prevent the air trapping phenomenon of the inner cavity rib 17 during injection molding, reduce the internal stress of the inner cavity rib 17, and increase the strength of the inner cavity rib 17, thereby achieving the effect of increasing the strength of the shell 1. In addition, the cylindrical rib end 171 can effectively disperse the compression stress to the depth filter element 2, thereby preventing the filter medium in the middle of the depth filter element 2 from being damaged.

As shown in fig. 2, 3 and 4, the inner wall corners of the upper and lower cases 11 and 12 are provided with arc-shaped guide surfaces 101, the radius of the rounded corners of the guide surfaces 101 is 3 to 10mm, and the guide surfaces 101 form arc-shaped transition between the inner wall and the bottom surface. When the liquid of the filter flows through the corner, the resistance along the way of the liquid is reduced through the arc-shaped diversion surface 101 with larger fillet radius.

As shown in fig. 1, the outer surface of the housing 1 is provided with an outer reinforcing rib 14, the outer reinforcing rib 14 comprises radial ribs 14b extending outwards from the center and circumferential ribs 14a connected with the radial ribs 14b, and the outer reinforcing rib 14 and the inner cavity ribs 17 are arranged in a staggered manner, so that the strength of the bottom plane of the housing 1 can be more effectively enhanced, and the deformation amount of the filter in the use process can be reduced. The outer ribs 14 have a width of 2 to 4mm, the outer ribs 14 have a height of 1 to 3mm, the radial ribs 14b have a number of 15 to 24, and the circumferential ribs 14a have a number of 5 to 8. The interaction of the inner cavity ribs 17 inside the shell 1 and the outer external ribs 14 ensures that the overall strength of the shell 1 is higher and the bearing capacity is higher.

Referring to fig. 2, 5 and 6, the upper shell lock 13b and the lower shell lock 13a are arranged in a staggered manner along the circumferential direction of the central hole 15, and the upper shell lock 13b and the lower shell lock 13a include a first lock portion 132 and a second lock portion 131, and as shown in fig. 5 and 6, taking the lower shell lock 13a as an example, the top end of the first lock portion 132 is connected with the middle of the second lock portion 131 to form a T-shaped structure. When the upper shell 11 and the lower shell 12 are combined and fixed, the upper shell lock catches 13b and the lower shell lock catches 13a are mutually buckled, any one upper shell lock catch 13b is positioned between two adjacent lower shell lock catches 13a to form an interlocking mechanism, and after buckling, the inner ring 18 is driven to generate a pressing force acting on the inner deep filter element 2. Because the upper shell lock catches 13b and the lower shell lock catches 13a are orderly staggered along the circumferential direction of the central hole 15, the pressing force of the inner ring 18 can uniformly act on the deep filter element 2, and a stable pressing sealing effect is realized.

Gaps are arranged between the upper shell lock catch 13b and the lower shell lock catch 13a and the inner ring 18 of the corresponding central hole 15, and the upper shell lock catch 13b and the lower shell lock catch 13a are connected with the inner ring 18 of the corresponding central hole 15 through the connecting part 16. In order to improve the strength of the connecting portion 16, a reinforcing rib 16a is provided on the connecting portion 16, one end of the reinforcing rib 16a is connected to the end of the corresponding upper shell lock 13b or the end of the corresponding lower shell lock 13a, and the other end of the reinforcing rib 16a is connected to the corresponding upper shell 11 or lower shell 12, so that the end of the upper shell lock 13b or the end of the lower shell lock 13a is reliably connected to the inner ring 18.

As shown in fig. 6 and 7, the tip of the second locking portion 131 is provided with an inclined guide surface 133, and the inclination angle of the guide surface 133 with respect to the axial direction of the center hole 15 is 10 ° to 40 °. When the inner rings 18 of the upper and lower shells are fixed, the guide surface 133 at the top can play a role in guiding, so that the risk of dislocation collision possibly occurring in the upper and lower shell catches is prevented, and the upper shell catches 13b and the corresponding lower shell catches 13a can be smoothly buckled.

As shown in fig. 2 and 7, after the fastening, the contact surface 135 between the upper shell fastener 13b and the lower shell fastener 13a is the bottom surface of the second fastener 131, and is distributed on two sides of the first fastener 132, and the contact area between the upper shell fastener 13b and the lower shell fastener 13a is 2 to 10cm ². The cross section 134 of the second locking portion 131 is a projection plane of the widest part of the second locking portion 131 along the axial direction perpendicular to the central hole 15, and the contact surface 135 between the upper shell locking portion 13b and the lower shell locking portion 13a and the cross section 134 of the second locking portion 131 may be arranged in parallel when actually designed. The contact area of the upper shell lock 13b and the lower shell lock 13a accounts for 50% -70% of the cross section area of the second lock part 131, so that the connection strength of the first lock part 132 is ensured, the buckling pressure is reduced, and a good protection effect is achieved on the lock.

A stacked depth filter assembly, as shown in fig. 8, comprises an upper cover 2a and a lower cover 2b, wherein a stacked depth filter 10 is arranged between the upper cover 2a and the lower cover 2b, and the upper cover 2a and the lower cover 2b are respectively provided with a first pipeline 21 communicated with a central hole 15 of the stacked depth filter 10 and a second pipeline 23 communicated with a through hole 19 of the stacked depth filter 10.

As shown in connection with fig. 9, both the upper and lower caps 2a and 2b are provided with a central groove 22 communicating with the first pipe 21, the central groove 22 corresponding in position to the central hole 15 of the stacked depth filter 10. The upper cover 2a and the lower cover 2b are each provided with an annular groove 24 communicating with the second pipe 23, the annular groove 24 corresponding to the position of the through hole 19 of the stacked depth filter 10.

Further, when a plurality of stacked depth filters 10 are provided between the upper cover 2a and the lower cover 2b, the center holes 15 and the through holes 19 between adjacent stacked depth filters 10 are respectively communicated correspondingly.

In actual use, at least one first pipe 21 in the upper cover 2a or the lower cover 2b is used for liquid inlet, the liquid enters the central groove 22 and then flows into the central hole 15 of the stacked deep-layer filter 10, the liquid enters the inner cavity of the stacked deep-layer filter 10 after being filtered, flows into the through holes 19 of the stacked deep-layer filter 10 through the flow channels between the flow guide ribs, and finally flows into the annular groove 24 and flows out of the second pipe 23. Of course, it is also possible to use the second conduit 23 for the inlet liquid and the first conduit 21 for the outlet liquid. In order to ensure sealing stability, sealing gaskets can be arranged at the periphery of the central hole 15 and the through hole 19 of the shell, and a clamp is arranged outside the stacked deep-layer filter assembly and is used for extruding the upper cover 2a and the lower cover 2b so as to extrude the stacked deep-layer filter 10 between the upper cover and the lower cover, thereby ensuring the overall sealing performance of the stacked deep-layer filter assembly.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (12)

1. The utility model provides a stacked deep filter, includes shell (1) and a plurality of deep filter core (2) of arranging along the axial stack in the inner chamber of shell (1), a serial communication port, shell (1) are including upper shell (11) and inferior valve (12) that have centre bore (15), the outside of centre bore (15) is encircleed and is provided with a plurality of through-holes (19), inner chamber bottom surface (102) of shell (1) are equipped with a plurality of by the outside inner chamber rib (17) that are radial arrangement of centre, inner chamber rib (17) include supporting rib (17 a) and set up water conservancy diversion muscle (17 b) between adjacent supporting rib (17 a), water conservancy diversion muscle (17 b) highly are less than supporting rib (17 a) height.

2. The stacked depth filter as claimed in claim 1, wherein the end of the cavity rib (17) adjacent to the central bore (15) is provided with a rib end (171) having a cylindrical shape, the rib end (171) having a cross-sectional diameter greater than the width of the cavity rib (17).

3. A stacked depth filter as claimed in claim 1, wherein the outer surface of the housing (1) is provided with outer stiffening ribs (14), the outer stiffening ribs (14) comprising radial ribs (14 b) extending outwardly from the centre and circumferential ribs (14 a) connected to each radial rib (14 b), the outer stiffening ribs (14) being arranged offset from the inner cavity ribs (17).

4. A stacked depth filter as claimed in claim 1 or 2 or 3, wherein the number of support ribs (17 a) is 8 to 16, the height of the support ribs (17 a) is 2 to 8mm, and the width of the support ribs (17 a) is 1 to 4mm.

5. A stacked depth filter as claimed in claim 1 or 2 or 3, wherein the number of ribs (17 b) between the support ribs (17 a) is 1 to 3, the height of the ribs (17 b) is 1 to 4mm, and the width of the ribs (17 b) is 1 to 4mm.

6. The stacked deep filter according to claim 1, wherein the outer ring of the upper shell (11) and the outer ring of the lower shell (12) are welded and sealed and fixed, an inner ring (18) of a central hole (15) of the upper shell (11) is provided with an upper shell lock catch (13 b), an inner ring (18) of a central hole (15) of the lower shell (12) is provided with a lower shell lock catch (13 a), the upper shell lock catch (13 b) and the lower shell lock catch (13 a) are arranged in a staggered manner along the circumferential direction of the central hole (15), and the upper shell lock catch (13 b) and the lower shell lock catch (13 a) are mutually buckled so that the upper shell (11) and the lower shell (12) are in extrusion sealing with the central part of the deep filter element (2).

7. The stacked depth filter of claim 6, wherein the upper shell latch (13 b) and the lower shell latch (13 a) include a first latch portion (132) and a second latch portion (131), and one end of the first latch portion (132) is connected to a middle portion of the second latch portion (131) to form a T-shaped structure.

8. The stacked depth filter according to claim 6 or 7, wherein a gap is provided between the upper shell lock (13 b) and/or the lower shell lock (13 a) and the inner ring (18) of the corresponding central hole (15), the upper shell lock (13 b) and/or the lower shell lock (13 a) are connected with the inner ring (18) of the corresponding central hole (15) through a connecting portion (16), and a reinforcing rib (16 a) is provided on the connecting portion (16).

9. The stacked depth filter as claimed in claim 7, wherein the top end of the second latching portion (131) is provided with an inclined guide surface (133), the guide surface (133) being inclined at an angle of 10 ° to 40 ° with respect to the axial direction of the central bore (15).

10. The stacked depth filter of claim 7, wherein the upper shell latch (13 b) and the adjacent lower shell latch (13 a) have a contact area of 2 to 10cm ², the contact area accounting for 50% -70% of the cross-sectional area of the second latch portion (131).

11. The utility model provides a stacked depth filter subassembly, its characterized in that includes upper cover (2 a) and lower cover (2 b), be equipped with at least one stacked depth filter (10) between upper cover (2 a) and lower cover (2 b), upper cover (2 a) and lower cover (2 b) are equipped with respectively with first pipeline (21) of the centre bore (15) intercommunication of stacked depth filter (10) and with second pipeline (23) of the through-hole (19) intercommunication of stacked depth filter (10).

12. The stacked depth filtration assembly of claim 11, wherein the upper and lower caps (2 a, 2 b) are each provided with a central slot (22) in communication with the first conduit (21), the central slot (22) corresponding to the central aperture (15) of the stacked depth filter (10), and the upper and lower caps (2 a, 2 b) are each provided with an annular slot (24) in communication with the second conduit (23), the annular slot (24) corresponding to the through-hole (19) of the stacked depth filter (10).