CN220404991U - Deep filtration unit, deep filtration assembly and deep filtration device - Google Patents

Abstract

The utility model discloses a depth filtration unit, which comprises two groups of depth filtration media, wherein the peripheral sides of the two groups of depth filtration media are provided with sealed edges, and the center of each group of depth filtration media is provided with a first through hole; the flow guide piece is arranged between the two groups of deep filtration media, a second through hole corresponding to the first through hole in position is arranged at the center of the flow guide piece, and a flow guide channel communicated with the second through hole is arranged on the flow guide piece; further comprises: the two connecting pieces are oppositely arranged and are respectively arranged at the first through holes of the two groups of deep-layer filter media, each connecting piece comprises a connecting part inserted into the corresponding first through hole and a sealing part encircling the periphery of the corresponding connecting part, the sealing part is positioned on one side of the deep-layer filter media, which is away from the guide piece, and is used for sealing and covering the part of the deep-layer filter media encircling the corresponding first through hole, and the connecting part is provided with a third through hole communicated with the corresponding second through hole. In addition, the utility model also discloses a deep layer filter assembly adopting the deep layer filter unit and a deep layer filter device adopting the deep layer filter assembly.

Description

Deep filtration unit, deep filtration assembly and deep filtration device

Technical Field

The utility model relates to the technical field of filtration, in particular to a deep filtration unit, a deep filtration assembly and a deep filtration device.

Background

Chinese patent No. CN217188220U discloses a combined loading type deep filtration mechanism, which comprises a housing, a central rod positioned in the housing, a combined filtration structure mounted on the central rod and positioned in the housing, and a self-locking structure arranged on the housing; the combined type filtering structure comprises a plurality of filter elements arranged on the central rod and a separation ring arranged on the central rod and having a separation sealing function on the filter elements; through the setting of auto-lock structure, be convenient for the installation between the adjacent filtering mechanism is fixed. The arrangement of the separating ring plays a role in separating adjacent filter elements, and when the upper shell and the lower shell produce axial opposite extrusion action on the filter elements in the installation, the separating ring produces extrusion action on the periphery of the central hole of the filter element so as to realize extrusion sealing at the position.

Because the filter element in the filtering mechanism is sealed, the shell needs to produce opposite extrusion action in the axial direction, and the requirements on the strength of the shell are higher, namely, the thickness of the shell needs to be increased, and/or the shell is made of a material with better performance, so that the integrity of the shell can be ensured, and the manufacturing cost of the shell is increased.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a deep filtration unit, a deep filtration assembly and a deep filtration device, and by improving the sealing mode of the deep filtration unit at the periphery of a first through hole, the deep filtration unit is not required to be axially extruded by a shell, so that the integrity of the deep filtration unit can be ensured by adopting a shell with common strength, and the manufacturing cost of the shell is further reduced.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a depth filtration unit comprising:

the periphery sides of the two groups of deep filtration media are provided with sealed edges, and the center of each group of deep filtration media is provided with a first through hole;

the flow guide piece is arranged between the two groups of deep filtration media, a second through hole which is positioned corresponding to the first through hole is arranged at the center of the flow guide piece, and a flow guide channel which is communicated with the second through hole is arranged on the flow guide piece;

further comprises:

the two connecting pieces are oppositely arranged and are respectively arranged at the first through holes of the two groups of deep-layer filter media, each connecting piece comprises a connecting part inserted into the corresponding first through hole and a sealing part encircling the periphery of the corresponding connecting part, the sealing parts are positioned on one side of the deep-layer filter media, which is away from the guide piece, and are used for sealing and covering the part of the deep-layer filter media encircling the corresponding first through holes, and the connecting parts are provided with third through holes communicated with the corresponding second through holes.

After the deep filtration units are assembled, the sealing part of the connecting piece can be used for sealing and covering the part of the deep filtration medium surrounding the first through hole, so that the sealing of each deep filtration unit at the first through hole is realized, and the third through hole arranged on the connecting part can discharge filtrate or enable filtrate to flow into the diversion channel through the second through hole. In addition, when a plurality of deep filtration units are required to be assembled together, the ends of the connecting parts of the adjacent deep filtration units are only required to be connected in a welding mode, so that the operation is convenient and the sealing performance is reliable. That is, before the deep-layer filtration units are assembled into the housing, the first through holes of the deep-layer filtration units are sealed through the sealing parts of the connecting pieces, and sealing packaging among the deep-layer filtration units is realized without the help of opposite extrusion action of the high-strength housing in the axial direction, namely, the integrity of the high-strength housing can be ensured by adopting the housing with common strength, so that the manufacturing cost of the housing is reduced.

In the above depth filtration unit, the connector is integrally overmolded at the first through hole of the depth filtration media, and the sealing portion is made to cover and seal the portion of the depth filtration media surrounding the first through hole. In this design, the connecting piece can be formed at the first through hole through two-time molding by an integral over-molding process, more specifically, a mold with a specific shape is clamped at the first through hole, then molten plastic is extruded to the first through hole, and the connecting piece with a preset shape is formed after the molten plastic is cooled, so that the assembling process of the connecting piece is omitted, and in addition, the sealing reliability between the sealing part and the deep-layer filter medium can be improved, so that leakage is avoided.

In the above-mentioned deep filtration unit, the deep filtration unit still includes two isolating rings, two the isolating rings are located the both sides of water conservancy diversion spare respectively, the isolating ring is including around the interior ring body that the second through-hole set up and the outer ring body of integrated into one piece in the interior ring body outside, the center department of interior ring body is equipped with the through-hole that communicates with the second through-hole, the terminal surface of interior ring body sets up with the terminal surface of connecting portion relatively, the deep filtration medium surrounds the sealed clamp of the position of first through-hole and adorns between sealing portion and outer ring body. With the design, for the scheme that the connecting piece is integrally overmolded on the depth filtration medium, the flow range of the molten plastic can be limited through the inner ring body, so that the connecting piece is conveniently integrally overmolded at the first through hole; for the scheme that the connecting piece is independently processed and molded and then assembled to the deep-layer filter medium, the inner ring body can play a role in supporting and limiting the connecting part so as to avoid the problem that the sealing part excessively extrudes the deep-layer filter medium to rupture; finally, the part of the deep layer filter medium surrounding the first through hole is sealed and clamped between the sealing part and the outer ring body, so that the sealing performance of the deep layer filter medium surrounding the first through hole can be improved.

In the deep filtration unit, the end face of the inner ring body is connected with the end face of the connecting part; and/or a hollow column which is axially communicated is arranged between the two inner ring bodies, connecting ribs are filled in the hollow column, and two ends of the hollow column are respectively connected with opposite end surfaces of the connecting part. By the design, the two connecting pieces can be axially connected, namely the two connecting pieces are mutually pulled, the opposite pressing effect of the sealing part on the first through hole periphery area of the two groups of deep filter media is increased, and the sealing performance of the sealing part on the periphery part of the first through hole of the deep filter media is further improved; in addition, the arrangement of the hollow column can also enable molten plastics to flow through for integrally-overmoulded connecting pieces so as to simultaneously form two connecting pieces through a one-time overmoulding process, thereby improving the production efficiency of products; or glue solution is filled in the hollow column to bond the connecting pieces which are independently processed and formed at the two sides, so that the pressing effect of the two sealing parts on the deep filtration media and the integral structural strength of the connecting pieces at the two sides are further improved.

In the deep filtration unit, the two isolating rings and the hollow column are integrally formed with the guide piece; or one of the isolating rings and the flow guiding piece are integrally formed, the other isolating ring is independently formed, the hollow column and one of the isolating rings are integrally formed, and the other isolating ring is provided with an opening corresponding to the hollow column; by the design, the assembly steps of the deep filtration unit can be effectively reduced, so that the assembly efficiency of the product is improved; or, the two isolating rings and the guide piece are independently processed and molded, the hollow column and one of the isolating rings are integrally processed and molded, and the other isolating ring is provided with an opening corresponding to the hollow column in position; by the design, the respective processing and forming difficulty of the guide piece and the isolating ring can be reduced, so that the development cost of the die is reduced.

In the depth filtration unit, the aperture of the through hole is equal to the aperture of the second through hole, and the aperture of the through hole is smaller than the aperture of the third through hole. When the rubber coating is formed into the connecting piece, the inner ring body can prevent molten rubber coating feed liquid from entering the through hole so as to avoid blocking the flow guide channel.

In the deep filtration unit, the outer peripheral side of the connecting part is in sealing fit with the inner wall of the first through hole, one end face of the connecting part, which is far away from the guide piece, comprises an outer annular face and an inner annular face protruding out of the outer annular face, and the outer annular face is flush with the outer side face of the sealing part. So design, the periphery side of accessible connecting portion promotes holistic seal reliability with the sealed laminating of inner wall of first through-hole, in addition, interior ring face protrusion in the design of outer ring face, the interior ring face welding of the connecting portion of still accessible interior ring face and adjacent depth filtration unit or with the interior top surface or the interior bottom surface welding of shell, from this, guaranteed to form the circulation clearance between two adjacent depth filtration units and between the roof or the diapire of depth filtration unit and shell, so that the flow of liquid, promote filtration efficiency, the material cost of connecting piece has also been reduced simultaneously.

In the above deep filtration unit, the outer annular surface is provided with a plurality of radially distributed reinforcing ribs, and the height of the reinforcing ribs is smaller than the height difference between the outer annular surface and the inner annular surface. The design can improve the overall structural strength of the connecting part and the sealing part; in addition, the reinforcing ribs can be prevented from being scalded when the inner annular surfaces of the adjacent deep filtration units are welded and connected.

In the deep filtration unit, the guide piece comprises a plurality of guide ribs extending radially, the guide ribs are connected through a connecting block extending circumferentially, the starting ends of the radial inner sides of the guide ribs are surrounded to form the second through holes, and the guide channel is formed between two adjacent guide ribs. The design is simple in structure, and the material cost is low, so that the manufacturing cost of the flow guiding piece is reduced.

In the above-described depth filtration unit, the opposite end surfaces of the connecting portions of the two connecting members are connected so that the two sealing portions are axially pressed to seal the portion of the depth filtration medium surrounding the first through hole. The design can be in advance independently processing and shaping two connecting pieces, then assemble the connecting piece on the depth filtration medium, make the terminal surface that connecting portion is relative of two connecting pieces link to each other at last to make two sealing parts axial extrusion with sealed depth filtration medium encircle the position of first through-hole, this kind of processing mode is lower to the requirement of production technology and production facility.

The utility model also provides a deep filtration assembly, which comprises a shell and at least one deep filtration unit axially and hermetically stacked in the shell, wherein the deep filtration unit is the deep filtration unit according to any one of the technical schemes, the top wall and the bottom wall of the shell are respectively provided with a first opening communicated with a third through hole, and a plurality of second openings which encircle the outer side of the first opening and are communicated with the outside of the deep filtration unit, the connecting parts of the adjacent deep filtration units are hermetically connected, the connecting parts of the deep filtration units adjacent to the top wall of the shell are hermetically connected with a first joint, the first joint penetrates through the first opening on the top wall of the shell, the connecting parts of the deep filtration units adjacent to the bottom wall of the shell are hermetically connected with a second joint, and the second joint penetrates through the first opening on the bottom wall of the shell;

the outer end face of the first connector is provided with a first sealing ring, the outer end face of the second connector is provided with a first pressing convex rib axially corresponding to the first sealing ring, the outer side face of the top wall of the shell is also provided with a second sealing ring positioned at the periphery of the second opening, and the outer side face of the bottom wall of the shell is provided with a second pressing convex rib axially corresponding to the second sealing ring.

When the multiple deep-layer filter assemblies are axially stacked, the first pressing ribs at the bottom of the deep-layer filter assembly above the axial direction are pressed on the first sealing ring at the top of the deep-layer filter assembly below the axial direction to form extrusion sealing, the second pressing ribs at the outer side surface of the bottom wall of the shell of the deep-layer filter assembly above the axial direction are pressed on the second sealing ring at the outer side surface of the top wall of the shell of the deep-layer filter assembly below the axial direction to form extrusion sealing, namely, after the multiple deep-layer filter assemblies are axially stacked, the extrusion sealing between two adjacent deep-layer filter assemblies can be realized, and the assembly is simple and convenient; in addition, the shell is not required to axially squeeze the deep filtration unit, so that the shell with general strength can be adopted to ensure the integrity of the deep filtration unit, and the manufacturing cost of the shell is reduced.

The utility model also provides a depth filtration device, which comprises a liquid guide plate, an exhaust plate and at least one depth filtration component which is overlapped between the liquid guide plate and the exhaust plate in a sealing way, wherein the depth filtration component is the depth filtration component according to any technical scheme, the liquid guide plate is provided with a first liquid guide pipe communicated with a first opening and a second liquid guide pipe communicated with a second opening, and the exhaust plate is provided with a first exhaust pipe communicated with the first opening and a second exhaust pipe communicated with the second opening.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

Drawings

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of a depth filtration unit according to an embodiment of the present utility model;

FIG. 2 is a perspective cross-sectional view of a depth filtration unit according to a first embodiment of the present utility model;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is an enlarged partial schematic view of FIG. 3A;

FIG. 5 is a schematic view of an embodiment of the present utility model in which two spacer rings are integrally formed with a guide member;

FIG. 6 is a perspective cross-sectional view of FIG. 5;

FIG. 7 is a schematic diagram of an embodiment of the present utility model in which a spacer ring, a hollow column and a flow guiding member are integrally formed;

FIG. 8 is a perspective cross-sectional view of FIG. 7;

FIG. 9 is a schematic diagram of another spacer ring according to a second embodiment of the present utility model;

FIG. 10 is a perspective cross-sectional view of FIG. 9;

FIG. 11 is a schematic view of a depth filtration module according to a fourth embodiment of the present utility model;

FIG. 12 is a schematic illustration of a depth filter assembly according to a fourth embodiment of the present utility model with a housing removed;

FIG. 13 is a perspective cross-sectional view of a depth filtration assembly according to a fourth embodiment of the present utility model;

FIG. 14 is an enlarged partial schematic view of B in FIG. 13;

FIG. 15 is an enlarged partial schematic view of C in FIG. 13;

FIG. 16 is an enlarged partial schematic view of D of FIG. 13;

FIG. 17 is a schematic view of a depth filtration device according to a fifth embodiment of the present utility model;

FIG. 18 is a perspective cross-sectional view of a depth filtration device according to a fifth embodiment of the present utility model;

reference numerals:

100. a depth filtration unit; 110. depth filtration media; 111. a first through hole; 120. a flow guide; 121. a second through hole; 122. a diversion channel; 123. a flow guiding rib; 124. a connecting block; 130. a connecting piece; 131. a connection part; 1311. a third through hole; 1312. an outer annulus; 1313. an inner annulus; 1314. reinforcing ribs; 132. a sealing part; 140. sealing the edges; 150. a spacer ring; 151. an inner ring body; 1511. a through hole; 152. an outer ring body; 153. opening holes; 160. a hollow column; 170. a connecting rib; 200. a housing; 210. a first opening; 220. a second opening; 230. a first joint; 231. a first groove; 240. a second joint; 241. a first pressing rib; 250. a first seal ring; 260. a second seal ring; 270. the second presses the convex rib; 300. a liquid guide plate; 310. a first catheter; 320. a second catheter; 400. an exhaust plate; 410. a first exhaust pipe; 420. and a second exhaust pipe.

Detailed Description

The present utility model provides a depth filtration unit comprising:

the periphery sides of the two groups of deep filtration media are provided with sealed edges, and the center of each group of deep filtration media is provided with a first through hole;

the flow guide piece is arranged between the two groups of deep filtration media, a second through hole which is positioned corresponding to the first through hole is arranged at the center of the flow guide piece, and a flow guide channel which is communicated with the second through hole is arranged on the flow guide piece;

further comprises:

the two connecting pieces are oppositely arranged and are respectively arranged at the first through holes of the two groups of deep-layer filter media, each connecting piece comprises a connecting part inserted into the corresponding first through hole and a sealing part encircling the periphery of the corresponding connecting part, the sealing parts are positioned on one side of the deep-layer filter media, which is away from the guide piece, and are used for sealing and covering the part of the deep-layer filter media encircling the corresponding first through holes, and the connecting parts are provided with third through holes communicated with the corresponding second through holes.

After the deep filtration units are assembled, the sealing part of the connecting piece can be used for sealing and covering the part of the deep filtration medium surrounding the first through hole, so that the sealing of each deep filtration unit at the first through hole is realized, and the third through hole arranged on the connecting part can discharge filtrate or enable filtrate to flow into the diversion channel through the second through hole. In addition, when a plurality of depth filtration units are required to be assembled together, the ends of the connecting parts of the adjacent depth filtration units are only required to be connected in a welding mode, that is, before the depth filtration units are assembled into the shell, the first through holes of the depth filtration units are sealed through the sealing parts of the connecting pieces, and then sealing packaging among the depth filtration units is realized without the help of opposite extrusion action of the high-strength shell in the axial direction, namely, the integrity of the shell can be ensured by adopting the shell with general strength, so that the manufacturing cost of the shell is reduced.

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model. In addition, it is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, which refer to an orientation or positional relationship, are merely based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices/elements referred to must have a specific orientation or be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.

Example 1

Referring to fig. 1 to 6, the depth filter unit 100 in this embodiment includes two sets of depth filter media 110, a flow guiding member 120 and two connecting members 130, where the outer peripheral sides of the two sets of depth filter media 110 are provided with sealing edges 140 to seal the outer peripheries of the two sets of depth filter media 110 by the sealing edges 140, a first through hole 111 is provided at the center of each set of depth filter media 110, the flow guiding member 120 is disposed between the two sets of depth filter media 110, a second through hole 121 corresponding to the first through hole 111 is provided at the center of the flow guiding member 120, and it should be noted that "corresponding" herein means that at least part of the first through hole 111 and the second through hole 121 are opposite so that they are in communication, the flow guiding member 120 is provided with a flow guiding channel 122 that is in communication with the second through hole 121 so as to guide the filtrate in the second through hole 121 into the depth filter unit 100 along the flow guiding channel 122, or so that the filtrate in the depth filter unit 100 is collected into the second through hole 121 along the flow guiding channel 122.

The two connectors 130 are disposed opposite to each other and are respectively mounted at the first through holes 111 of the two sets of depth filter media 110, the connectors 130 include a connecting portion 131 inserted into the first through holes 111 and a sealing portion 132 surrounding the outer periphery of the connecting portion 131, the sealing portion 132 is located at a side of the depth filter media 110 facing away from the flow guiding member 120 and is used for sealing and covering a portion of the depth filter media 110 surrounding the first through holes 111, and the connecting portion 131 is provided with a third through hole 1311 communicating with the second through holes 121.

After the depth filtration units 100 in the present embodiment are assembled, the sealing portion 132 of the connecting member 130 can seal and cover the portion of the depth filtration medium 110 surrounding the first through hole 111, so that the sealing of each depth filtration unit 100 at the first through hole 111 is achieved, and the third through hole 1311 provided on the connecting portion 131 can drain the filtrate or allow the filtrate to flow into and flow into the diversion channel 122 through the second through hole 121. In addition, when a plurality of depth filtration units 100 are required to be assembled together, the ends of the connection portions 131 of the adjacent depth filtration units 100 are only required to be connected in a welding manner, for example, so that the operation is convenient and the sealing performance is reliable. That is, before the depth filter unit 100 is assembled into the housing, the sealing is already achieved at the first through hole 111 by the sealing portion 132 of the connecting piece 130, and the housing of the depth filter unit 100 is subsequently packaged without the aid of a high-strength housing having to be pressed against each other in the axial direction, i.e. the integrity of the housing is ensured even with a housing having a general strength, so that the manufacturing cost of the housing is reduced.

Specifically, the connecting piece 130 in this embodiment is integrally formed at the first through hole 111 of the depth filter medium 110 in an over-molding manner, so that the sealing portion 132 covers and seals the portion of the depth filter medium 110 surrounding the first through hole 111, that is, the connecting piece 130 is formed at the first through hole 111 by two-shot molding, more specifically, a mold with a specific shape is clamped at the first through hole 111, including the outer periphery and the inner area of the first through hole 111, then molten plastic slurry is extruded at the first through hole 111, the outer periphery of the first through hole 111 and a part of the area filled in the first through hole 111 are covered, and after the molten plastic is cooled, the connecting piece 130 with a preset shape is formed.

In order to facilitate the integral overmolding of the connecting piece 130 at the first through hole 111, the depth filtration unit 100 in this embodiment further includes two isolation rings 150, where the two isolation rings 150 are respectively disposed at two sides of the flow guiding piece 120, the flow guiding piece 120 includes a plurality of flow guiding ribs 123 extending radially, the flow guiding ribs 123 are connected through a plurality of connecting blocks 124 extending circumferentially, the second through hole 121 is formed by surrounding the starting ends of the radial inner sides of the plurality of flow guiding ribs 123, and a flow guiding channel 122 is formed between two adjacent flow guiding ribs 123. The two isolating rings 150 are respectively arranged at the upper side and the lower side of the flow guiding rib 123, the isolating rings 150 comprise an inner ring body 151 arranged around the second through hole 121 and an outer ring body 152 integrally formed at the outer side of the inner ring body 151, a through hole 1511 communicated with the second through hole 121 is arranged at the center of the inner ring body 151, the end face of the inner ring body 151 and the end face of the connecting part 131 inserted into the first through hole 111 are oppositely arranged, and the part of the deep filtration medium 110 surrounding the first through hole 111 is sealed and clamped between the sealing part 132 and the outer ring body 152. In this way, the flow range of the molten plastic can be limited by the inner ring 151, so that the connecting piece 130 is conveniently integrally formed at the first through hole 111 in an over-coating manner, in addition, the end face of the inner ring 151 can be connected with the end face of the connecting part 131, so that the two connecting pieces 130 are axially connected, namely, the two connecting pieces 130 are mutually pulled, the opposite pressing effect of the sealing part 132 on the peripheral area of the first through hole 111 of the two groups of deep filtration media 110 is increased, and the sealing performance of the sealing part 132 on the peripheral part of the deep filtration media 110 located at the first through hole 111 is further improved; finally, the portion of depth filter media 110 surrounding first throughbore 111 can also be sealingly sandwiched between sealing portion 132 and outer ring 152, thereby improving the sealing performance of depth filter media 110 at the portion surrounding first throughbore 111.

Preferably, a hollow column 160 is axially penetrating between the two inner rings 151 in the present embodiment, the hollow column 160 is filled with connecting ribs 170, and two ends of the hollow column 160 are respectively connected with opposite end surfaces of the connecting portion 131, so that the reliability of the axial connection of the two connecting pieces 130 can be further enhanced, and in addition, for the integrally overmolded connecting pieces 130, the arrangement of the hollow column 160 can also enable molten plastic to flow through to simultaneously form the two connecting pieces 130 through a one-time overmolding process, thereby improving the production efficiency of products.

Preferably, in order to further improve the production efficiency of the product, in this embodiment, the two spacer rings 150 and the hollow column 160 are integrally formed with the guide 120. By the design, the assembly steps of the deep filtration unit 100 can be effectively reduced, so that the assembly efficiency of the product is improved.

Next, in the present embodiment, the aperture of the through hole 1511 is equal to the aperture of the second through hole 121, and the aperture of the through hole 1511 is smaller than the aperture of the third through hole 1311. So designed, when the connecting piece 130 is formed by encapsulation, the inner ring 151 can prevent molten encapsulation liquid from entering the through hole 1511, so as to avoid blocking the diversion channel 122.

Furthermore, it should be noted that, after the connecting piece 130 is integrally overmolded at the first through hole 111, the outer peripheral side of the connecting portion 131 is sealed and attached to the inner wall of the first through hole 111, and an end surface of the connecting portion 131 away from the flow guiding piece 120 includes an outer annular surface 1312 and an inner annular surface 1313 protruding from the outer annular surface 1312, and the outer annular surface 1312 is flush with an outer side surface of the sealing portion 132 facing away from the flow guiding piece 120. So designed, the outer peripheral side of the connecting portion 131 and the inner wall of the first through hole 111 are sealed and attached to promote the overall sealing reliability, in addition, the inner annular surface 1313 protrudes out of the outer annular surface 1312, and the inner annular surface 1313 of the connecting portion of the inner annular surface 1313 and the adjacent depth filtration units 100 is welded or welded with the inner top surface or the inner bottom surface of the outer shell, so that the circulation gaps are formed between the two adjacent depth filtration units 100 and between the depth filtration units and the top wall or the bottom wall of the outer shell, thereby facilitating the flow of liquid, improving the filtration efficiency, and simultaneously reducing the material cost of the connecting piece 130.

Preferably, the outer annular surface 1312 is provided with a plurality of radial ribs 1314, the ribs 1314 extend to the outer side surface of the sealing portion 132, and the height of the ribs 1314 is smaller than the height difference between the outer annular surface 1312 and the inner annular surface 1313. By the design, the overall structural strength of the connecting part 131 and the sealing part 132 can be improved; in addition, scalding of the reinforcing ribs 1314 when the inner annular surfaces 1313 of adjacent depth filtration units are welded together is avoided.

Finally, the manufacturing steps of the depth filtration unit 100 in this embodiment are substantially as follows:

firstly, two isolation rings 150 are respectively formed on two end faces of the guide piece 120, which are positioned in the peripheral area of the second through hole 121, in an integral processing and forming mode, then the guide piece 120 and the isolation rings 150 are together arranged between two groups of deep layer filter media 110, and the periphery of the deep layer filter media 110 is encapsulated to form a sealed edge 140;

two connecting pieces 130 are formed by encapsulation at the first through holes 111 of the deep layer filter media 110, in the encapsulation process, part of molten encapsulation feed liquid flows into the hollow column 160 between the two isolating rings 150, the encapsulation feed liquid forms connecting ribs 170 after cooling, after encapsulation, the connecting parts 131 of the two connecting pieces 130 are connected with the end faces of the inner ring body 151 into a whole, two ends of the connecting ribs 170 are respectively connected with the end faces of the two connecting parts 131, and the outer ring body 152 of the isolating rings and the sealing part 132 are used for sealing and clamping the peripheral parts of the first through holes 111 on each group of deep layer filter media 110 together so as to improve the sealing performance. Because the hollow column 160 is arranged between the two isolation rings 150, the two connecting pieces 130 can be formed through one encapsulation process, and the two connecting pieces 130 are connected into a whole through the connecting rib 170, which is equivalent to that the two connecting pieces 130 are mutually pulled, so that the integral structural strength of the two connecting pieces is improved.

It will be appreciated that in other embodiments of the utility model, the provision of hollow posts may be omitted, where the end faces of the connecting portions are connected only to the end faces of the inner ring body.

Example two

As shown in fig. 7 to 10, compared with the first embodiment, the difference of the present embodiment is that the hollow column 160, one of the isolation rings 150, and the guide 120 are integrally formed, the other isolation ring 150 is independently formed, the independently formed isolation ring 150 is provided with the opening 153 corresponding to the hollow column 160, and the independently formed isolation ring 150 is subsequently fixed on the guide 120 by bonding or welding, so that the assembly steps of the deep filtration unit 100 can be effectively reduced, and the assembly efficiency of the product can be improved.

It will be appreciated that in other embodiments of the utility model, the hollow post may also be integrally formed with a separate formed spacer ring.

It will be appreciated that in other embodiments of the utility model, the separately machined spacer rings are merely placed on the baffle member, and after the connectors are formed by encapsulation at the first through-hole of the depth filter media, the two spacer rings are pressed toward each other by the connectors at both ends into contact with both end surfaces of the peripheral region of the second through-hole of the baffle member.

It can be understood that in other embodiments of the present utility model, the two spacer rings and the guide member are formed by separate processing, the hollow column and one of the spacer rings are formed by integral processing, and the other spacer ring is provided with an opening corresponding to the hollow column.

Example III

Compared with the first and second embodiments, the difference of the present embodiment is that the two connecting pieces are processed and molded independently, after the two connecting pieces are assembled with the depth filtration medium, the opposite end faces of the connecting portions of the two connecting pieces are connected, in this embodiment, the end faces of the two connecting pieces are indirectly connected through the isolating ring, preferably, the end face of the inner ring body is coated with glue solution, the end face of the connecting portion is adhered to the end face of the inner ring body through the glue solution, preferably, the hollow column is filled with the glue solution, and after the glue solution is cured, the connecting ribs for connecting the two connecting portions are formed. The two connecting pieces can be mutually pulled by connecting the opposite end surfaces of the connecting parts of the two connecting pieces, so that the two sealing parts axially squeeze to seal the part of the depth filtration medium surrounding the first through hole.

It should be noted that, in this embodiment, the spacer ring may also make the inner ring body play a role in supporting and limiting the connection portion, so as to avoid the problem that the sealing portion excessively extrudes the depth filtration medium to rupture.

It will be appreciated that in other embodiments of the present utility model, the hollow column may be omitted, and the end face of the connecting portion is bonded to the end face of the inner ring body only by glue; or, instead of coating glue solution on the end face of the inner ring body, the hollow column is filled with glue solution to realize the connection of the opposite end faces of the connecting parts of the two connecting pieces.

Example IV

As shown in fig. 11 to 16, the present embodiment further provides a depth filter assembly using the above-mentioned depth filter unit, which includes a housing 200 and at least one depth filter unit 100 axially and sealingly stacked in the housing 200, wherein the top wall and the bottom wall of the housing 200 each have a first opening 210 communicating with a third through hole 1311, and a plurality of second openings 220 surrounding the outside of the first opening 210 and communicating with the outside of the depth filter unit 100, the connection portions 131 of adjacent depth filter units 100 are sealingly connected by welding, the connection portions 131 of the depth filter units 100 adjacent to the top wall of the housing are sealingly connected by welding with a first joint 230, the first joint 230 penetrates the first opening 210 on the top wall of the housing, the connection portions 131 of the depth filter units 100 adjacent to the bottom wall of the housing are sealingly connected by welding with a second joint 240, and the second joint 240 penetrates the first opening 210 on the bottom wall of the housing;

the outer end surface of the first joint 230 is provided with a first groove 231, a first sealing ring 250 is embedded in the first groove 231, the outer end surface of the second joint 240 is provided with a first pressing rib 241 axially corresponding to the first sealing ring 250, the outer side surface of the top wall of the shell is also provided with a second groove positioned at the periphery of the second opening 220, a second sealing ring 260 is embedded in the second groove, and the outer side surface of the bottom wall of the shell is provided with a second pressing rib 270 axially corresponding to the second sealing ring 260.

When the multiple depth filter assemblies are axially stacked, the first pressing ribs 241 at the bottom of the depth filter assembly above the axial direction are pressed and held on the first sealing ring 250 at the top of the depth filter assembly below the axial direction to form extrusion sealing, the second pressing ribs 270 at the outer side surface of the bottom wall of the shell of the depth filter assembly above the axial direction are pressed and held on the second sealing ring 260 at the outer side surface of the top wall of the shell of the depth filter assembly below the axial direction to form extrusion sealing, namely, after the multiple depth filter assemblies are axially stacked, the extrusion sealing between two adjacent depth filter assemblies can be realized, and the assembly is simple and convenient; in addition, the housing is not required to axially compress the depth filtration unit 100, so that a housing with a general strength can be used to ensure the integrity of the unit, thereby reducing the manufacturing cost of the housing.

Example five

As shown in fig. 17 and 18, this embodiment also provides a depth filtration device, which includes a liquid guide plate 300, an exhaust plate 400 and at least one depth filtration assembly sealingly stacked therebetween, the depth filtration assembly being the depth filtration assembly described in the fourth embodiment, wherein the liquid guide plate 300 has a first liquid guide tube 310 communicating with the first opening 210 and a second liquid guide tube 320 communicating with the second opening 220, and the exhaust plate 400 has a first exhaust tube 410 communicating with the first opening 210 and a second exhaust tube 420 communicating with the second opening 220.

When the depth filtration device in this embodiment filters, the liquid to be filtered enters each second opening 220 through the second liquid guide tube 320 of the liquid guide plate 300, then flows into the housing 200 and flows to the outer surface of the depth filtration media 110 of each depth filtration unit 100, after being filtered by the depth filtration media 110, the impurity contaminants are trapped outside the depth filtration unit 100, and the filtrate enters the depth filtration unit 100, flows to the second through holes 121 along the flow guide channel 122 of the flow guide member, finally flows to the first liquid guide tube 310 through the third through holes 1311, and finally is discharged out of the depth filtration device; in addition, the gas in the filtrate is also discharged through the second exhaust pipe 420 of the exhaust plate 400, and the gas in the filtrate is discharged through the first through hole 111 and the first exhaust pipe 410. Of course, the flow path of the fluid may be reversed.

While the utility model has been described in terms of embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.

Claims (12)

1. A depth filtration unit comprising:

the periphery sides of the two groups of deep filtration media are provided with sealed edges, and the center of each group of deep filtration media is provided with a first through hole;

the flow guide piece is arranged between the two groups of deep filtration media, a second through hole which is positioned corresponding to the first through hole is arranged at the center of the flow guide piece, and a flow guide channel which is communicated with the second through hole is arranged on the flow guide piece;

characterized by further comprising:

the two connecting pieces are oppositely arranged and are respectively arranged at the first through holes of the two groups of deep-layer filter media, each connecting piece comprises a connecting part inserted into the corresponding first through hole and a sealing part encircling the periphery of the corresponding connecting part, the sealing parts are positioned on one side of the deep-layer filter media, which is away from the guide piece, and are used for sealing and covering the part of the deep-layer filter media encircling the corresponding first through holes, and the connecting parts are provided with third through holes communicated with the corresponding second through holes.

2. The depth filtration unit of claim 1, wherein the connector is integrally overmolded at the first through-hole of the depth filtration media such that the seal covers and seals the portion of the depth filtration media surrounding the first through-hole.

3. The depth filtration unit according to claim 1 or 2, further comprising two isolation rings, wherein the two isolation rings are respectively arranged at two sides of the flow guiding member, the isolation rings comprise an inner ring body arranged around the second through hole and an outer ring body integrally formed at the outer side of the inner ring body, a through hole communicated with the second through hole is arranged at the center of the inner ring body, the end face of the inner ring body is opposite to the end face of the connecting part, and the depth filtration medium is clamped between the sealing part and the outer ring body in a sealing way around the part of the first through hole.

4. A depth filtration unit according to claim 3, wherein the end face of the inner ring body is connected to the end face of the connecting portion; and/or a hollow column which is axially communicated is arranged between the two inner ring bodies, connecting ribs are filled in the hollow column, and two ends of the hollow column are respectively connected with opposite end surfaces of the connecting part.

5. The depth filtration unit of claim 4, wherein both the spacer ring and hollow post are integrally formed with the baffle; or, one of the isolating rings and the guide piece are integrally formed, the other isolating ring is independently formed, the hollow column and one of the isolating rings are integrally formed, the other isolating ring is provided with a hole corresponding to the hollow column, or, the two isolating rings and the guide piece are independently formed, the hollow column and one of the isolating rings are integrally formed, and the other isolating ring is provided with a hole corresponding to the hollow column.

6. A depth filtration unit according to claim 3, wherein the aperture of the through-going hole is equal to the aperture of the second through-going hole, the aperture of the through-going hole being smaller than the aperture of the third through-going hole.

7. The depth filtration unit of claim 1 or 2, wherein the outer peripheral side of the connection portion is in sealing engagement with the inner wall of the first through hole, and an end surface of the connection portion remote from the flow guide member comprises an outer annular surface and an inner annular surface protruding from the outer annular surface, and the outer annular surface is flush with the outer side surface of the sealing portion.

8. The depth filtration unit of claim 7, wherein the outer annular surface is provided with a plurality of radially disposed ribs having a height less than a height difference between the outer annular surface and the inner annular surface.

9. The depth filtration unit of claim 1 or 2, wherein the flow guide member comprises a plurality of radially extending flow guide ribs connected by a circumferentially extending connecting block, the second through hole being defined by the radially inner starting ends of the plurality of flow guide ribs, and the flow guide channel being defined between two adjacent flow guide ribs.

10. The depth filtration unit of claim 1, wherein the opposed end surfaces of the connecting portions of the two connectors are joined such that the two sealing portions are axially compressed to seal the portion of the depth filtration media surrounding the first through hole.

11. A depth filtration assembly comprising a housing and at least one depth filtration unit axially sealingly stacked within the housing, wherein the depth filtration unit is a depth filtration unit according to any one of claims 1 to 9, wherein the top wall and the bottom wall of the housing each have a first opening communicating with a third through hole, and a plurality of second openings surrounding the first opening and communicating with the exterior of the depth filtration unit, the connection portions of adjacent depth filtration units being sealingly connected, the connection portions of depth filtration units adjacent the top wall of the housing being sealingly connected with a first connector extending through the first opening in the top wall of the housing, the connection portions of depth filtration units adjacent the bottom wall of the housing being sealingly connected with a second connector extending through the first opening in the bottom wall of the housing;

the outer end face of the first connector is provided with a first sealing ring, the outer end face of the second connector is provided with a first pressing convex rib axially corresponding to the first sealing ring, the outer side face of the top wall of the shell is also provided with a second sealing ring positioned at the periphery of the second opening, and the outer side face of the bottom wall of the shell is provided with a second pressing convex rib axially corresponding to the second sealing ring.

12. A depth filtration device comprising a liquid guide plate, an exhaust plate and at least one depth filtration module sealingly stacked therebetween, wherein the depth filtration module is the depth filtration module of claim 11, the liquid guide plate having a first liquid conduit in communication with a first opening and a second liquid conduit in communication with a second opening, the exhaust plate having a first exhaust conduit in communication with the first opening and a second exhaust conduit in communication with the second opening.