CN218076664U - Filtering component, filtering device and filtering system - Google Patents

Abstract

The utility model provides a filter assembly, filter equipment and filtration system, filter assembly includes stack shell, inner frame, filter membrane, end, and the stack shell includes entry region and external region, and filter equipment includes stack shell and shell, and filtration system includes filter equipment and power device. The utility model has the advantages that different aperture ratios are arranged in the external area and the inlet area of the cylinder body, so that the tolerance of the cylinder body is ensured, the fluid residue in the filtering device is reduced, the fluid recovery rate is improved, and the cost is reduced; the utility model adds the fixed support on the shell, so that the filter device is more stable and safe when being placed; the utility model discloses a structure to the inserted sheet of end improves, makes more convenient when fixing filtering component in the shell. The utility model discloses convenient to use, efficient, low cost have higher practical value.

Description

Filtering component, filtering device and filtering system

Technical Field

The utility model belongs to the bio-pharmaceuticals field, concretely relates to filter assembly, filter equipment and filtration system.

Background

In the bio-pharmaceutical process, different filters including a deep layer filter, a surface filter and a membrane filter are required, and in the prior art, the common forms of the membrane filter include a cartridge filter and a bag filter, and the cartridge filter generally comprises a cartridge body, an inner framework, a filter membrane, a support layer, an end head, an end cover, a filter shell and other components; the bag filter is generally composed of a cylinder body, an inner framework, a filter membrane, a supporting layer, an end cover and a filter shell. The filter membrane and the supporting layer are fixed between the cylinder body and the inner framework, the cylinder body and the inner framework are sealed and fixed through the end covers and/or the ends, the cylinder body and the inner framework are provided with through holes for fluid to pass through, the fluid enters the filter membrane from the through holes of the cylinder body, and the fluid enters the hollow part of the inner framework through the through holes of the inner framework after being filtered and is discharged. The cylinder type filter is a stainless steel shell and can be reused, and the bag type filter is a disposable product and is discarded after use.

In prior art, the general evenly distributed through-hole of stack shell outer wall is used for the fluid to get into filter medium region between stack shell and the inner frame, because in filtering process, the stack shell need bear high temperature, high pressure, consequently has very high requirement to the tolerance of stack shell, in order to guarantee the intensity of stack shell, generally is being equipped with the external region of take the altitude apart from the stack shell bottom, does not set up the through-hole in this region to guarantee that the stack shell can not produce deformation, fracture in high temperature, highly compressed environment. Although this design can solve the problem of barrel tolerance, there are the following problems:

fluid gets into the filter after the filter, and the through-hole from the stack shell outer wall gets into the filter medium region, because external region does not set up the through-hole, be less than in the inner chamber of filter the unable entering of the fluid of external region height the filter medium region can form the fluid residue in the filter housing, and this part fluid is not filtered, and also can not reuse behind the discharge filter, can reduce fluid recovery rate, increase cost. Because the stack shell outer wall needs satisfy certain percent by opening to satisfy filtering capability's requirement, consequently, if the trompil region through the increase stack shell outer wall reduces fluid residue, external regional height can corresponding reduction, thereby can reduce the bottom tolerance of stack shell, influence the performance of filter.

In addition, the conventional cartridge filter generally fixes the cartridge body to the filter housing by matching the insertion sheet with the fixing groove at the bottom of the filter housing, and the insertion sheet at the end of the conventional cartridge filter has uniform thickness, so that the conventional cartridge filter can encounter large resistance when being rotated after being placed in the fixing groove, and is difficult to operate; the existing bag type filter is generally used flatly, and the shell of the filter is cylindrical, so that the filter can roll when placed on a plane, and the use is inconvenient.

In view of the above, there is a need for a high-performance filter assembly, a filter device and a filter system that can ensure filtration efficiency, meet the tolerance of the cylinder, increase the fluid recovery rate, and facilitate the use.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model discloses an object is to provide a filter assembly, another object is to provide a filter equipment, still another object is to provide another kind of filter equipment, the utility model discloses a still another object is to provide a filtration system. In order to realize the purpose, the utility model discloses a technical scheme as follows:

a first aspect of the present invention provides a filter assembly, which comprises a cylinder body, an inner frame and a filter membrane, wherein the cylinder body and the inner frame are hollow tubes with two open ends, and the inner frame is arranged in the hollow tube of the cylinder body and is coaxial with the cylinder body; the filter membrane is fixed between the cylinder body and the inner framework; the outer wall of the cylinder body comprises an inlet area and an external area, the external area is arranged around at least one opening at one end of the outer wall of the cylinder body and extends to the middle part of the outer wall of the cylinder body, and the inlet area extends from the middle part of the outer wall of the cylinder body to the opening directions at two ends of the cylinder body respectively to be connected with the external area; the inlet area comprises at least one set of fluid inlets arranged on the outer wall of the barrel body, the inner framework comprises a fluid outlet, fluid is discharged from the fluid inlets through the fluid outlets after being filtered by the filter membrane, the external area comprises a set of through holes, and the aperture ratio of the external area is smaller than that of the inlet area.

Preferably, a first end cover is arranged at an opening at one end of the cylinder body, which is far away from the circumscribed area, and is used for completely closing the opening at one end of the cylinder body; and a second end cover is arranged at an opening at the other end of the cylinder body and used for sealing a radial section between the cylinder body and the inner framework, and fluid is filtered by the filter membrane from the fluid inlet and then is discharged from the hollow pipe of the inner framework through the fluid outlet.

Preferably, the filter assembly further comprises a spear and an end, the spear is fixed to the first end cover, the end is a hollow pipe with two open ends, one end of the hollow pipe is fixed to the second end cover, the other end of the hollow pipe is open, the hollow pipe of the end is communicated with the hollow pipe of the inner frame, and the fluid enters the hollow pipe of the end from the hollow pipe of the inner frame and is discharged.

Preferably, at least one pair of inserting pieces are arranged in the direction perpendicular to the outer wall of the end head, and each inserting piece becomes thinner gradually in the anticlockwise or clockwise direction along the outer wall of the end head.

Preferably, the other end of the end head and the outer wall surrounding the end head between the inserting sheets are at least provided with a circle of groove for accommodating an elastic sealing ring.

A second aspect of the present invention provides a filtering apparatus, including the filtering assembly and the first housing as mentioned above, the first housing includes a first inlet and a first outlet, the filtering assembly is fixed in the first housing, the fluid passes through the first inlet enters into the inner cavity of the first housing, and after the filtering assembly filters, the fluid is discharged from the first outlet.

Preferably, the first housing further comprises a fixing bracket for supporting the filter device to be horizontally placed.

A third aspect of the present invention provides another filtering device, comprising the filtering assembly and a second housing as above, wherein the second housing comprises a second inlet and a second outlet, the filtering assembly is fixed to the second housing through the end, the fluid passes through the second inlet into the inner cavity of the second housing, and the filtering assembly filters the fluid to be discharged from the second outlet.

A fourth aspect of the present invention provides a filtration system, comprising a filtration device and a power device as described above, wherein the power device drives the fluid to enter the filtration device from the first inlet under a certain pressure, and the filtration assembly filters the fluid to discharge the fluid from the first outlet.

A fifth aspect of the present invention provides another filtering system, comprising a filtering device and a power device as described above, wherein the power device drives the fluid to enter the filtering device from the second inlet under a certain pressure, and the filtering assembly filters the fluid and discharges the fluid from the second outlet.

The filtering component, the filtering device and the filtering system of the utility model have the advantages that the external area and the inlet area of the cylinder body are provided with different opening rates, so that the tolerance of the cylinder body is ensured, the fluid residue in the filtering device is reduced, the fluid recovery rate is improved, and the cost is reduced; the utility model adds the fixed support on the shell, so that the filter device is more stable and safe when being placed; the utility model discloses a structure to the inserted sheet of end improves, makes more convenient when fixing filtering component in the shell. The utility model discloses convenient to use, efficient, low cost have higher practical value.

Drawings

Various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,

FIG. 1 is a filter assembly according to one embodiment of the present invention;

FIG. 2 is a filter assembly according to another embodiment of the present invention;

fig. 3 is a barrel according to an embodiment of the present invention;

FIG. 4 is an inner frame of an embodiment of the present invention;

fig. 5 is a tip according to an embodiment of the present invention;

FIG. 6 is a bladder filter housing according to one embodiment of the present invention;

FIG. 7 is a bladder filter arrangement according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a bladder filter arrangement according to an embodiment of the present invention;

fig. 9 is a cartridge filter apparatus according to an embodiment of the present invention;

fig. 10 shows a base of a cartridge filter apparatus according to an embodiment of the present invention.

Description of reference numerals:

1: a filter assembly; 2: a first housing; 3: a second housing;

11: a barrel body; 12: an inner skeleton; 13: a first end cap; 14: a second end cap; 15: a spear tip; 16: a tip;

111: an inlet region; 112: a circumscribed area;

161: inserting sheets; 162: installing a groove;

21: a fixed bracket; 22: a first inlet; 23: a first outlet;

31: a second inlet; 32: a second outlet; a base: 33;

331: and fixing the groove.

Detailed Description

In order to make the disclosure more complete and complete, reference is made to the appended drawings and the following detailed description of the invention. However, it should be understood by those skilled in the art that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for illustrative purposes and are not drawn to scale.

The term "connected" in the specification includes both direct connection and indirect connection. The terms "a plurality" or "an" in the specification mean two or more. The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The following specifically describes the technical solutions of the present invention, and the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

The first embodiment is as follows:

the present embodiment provides a filter assembly 1 for a capsule filter device. Referring to fig. 1, 3 and 4, the filter assembly 1 includes a barrel 11, an inner frame 12, a filter membrane (not shown), a first end cap 13 and a second end cap 14. The filter assembly 1 is installed in a shell of the bag type filter device, and fluid is filtered by the filter assembly 1 and then discharged after entering the bag type filter device.

In this embodiment, both the barrel 11 and the inner frame 12 are hollow tubes with two open ends, the inner frame 12 is disposed in the hollow tube of the barrel 11 and is coaxial with the barrel 11, specifically, the axial heights of the barrel 11 and the inner frame 12 are the same; the filter membrane is fixed between the barrel body 11 and the inner framework 12; specifically, a filter membrane is pleated in a pleated manner to form a folded filter membrane, and the folded filter membrane surrounds the inner frame 12, so that the filter membrane is simultaneously abutted against the outer wall of the inner frame 12 and the inner wall of the barrel 11, and the folded filter membrane is fixed between the barrel 11 and the inner frame 12.

In this embodiment, the outer wall of the barrel 11 includes an inlet area 111 and an outer region 112, the outer region 112 is disposed around at least one opening of the outer wall of the barrel 11 and extends to the middle of the outer wall of the barrel 11, the inlet area 111 extends from the middle of the outer wall of the barrel 11 to the openings of the two ends of the barrel 11 respectively to meet the outer region 112; the inlet region 111 includes at least one set of fluid inlets formed in the outer wall of the barrel 11, the endoskeleton 12 includes a fluid outlet from which fluid is discharged after being filtered through the membrane, the outer region 112 includes a set of through holes, and the aperture ratio of the outer region 112 is smaller than that of the inlet region 111.

Specifically, referring to fig. 3, the two ends of the barrel 11 respectively include external regions 112, the inlet region 111 respectively meets each external region 112, the inlet region 111 uniformly distributes a set of fluid inlets for the fluid to enter the filtering medium region between the barrel 11 and the inner frame 12, and in order to ensure the filtering efficiency, the opening ratio of the inlet region 111 must satisfy a certain requirement, and the opening ratio is related to the number and size of the fluid inlets. The external connection region 112 is used to ensure the tolerance of the two ends of the barrel 11 at high temperature when the barrel is externally connected with other components by hot melting, so as to prevent the barrel 11 from deforming in the hot melting process, and meanwhile, ensure the tolerance of the barrel 11 at high pressure and high temperature in the using process, thereby ensuring the performance of the filter component 1. In the prior art, a non-opening area with a certain height is reserved at each end of the barrel 11 to ensure the tolerance of the barrel 11, but when fluid enters the bag type filtering device, the fluid below the height cannot enter the filtering medium area between the barrel 11 and the inner frame 12, so that fluid residue is formed between the outer shell of the bag type filtering device and the outer wall of the barrel 11. The solution of the present embodiment adds a set of through holes to the external region 112, which substantially further reduces the height of the non-perforated region, thereby reducing the fluid residue, and the aperture ratio of the external region 112 is smaller than the aperture ratio of the inlet region 111, specifically, in the present embodiment, the size of the set of through holes added to the external region 112 is smaller than the size of the through holes of the inlet region 111, and the interval is larger, so that the external region 112 is more stable than the inlet region 111, and the aperture ratio of the external region 112 is empirically set to ensure that the barrel 11 will not deform or break under the high temperature and high pressure environment.

In this embodiment, the circumscribed area 112 is disposed around an opening at one end of the outer wall of the barrel 11, and a first end cover 13 is disposed at an opening at one end of the barrel 11 away from the circumscribed area 112, so as to completely close the opening at one end of the barrel 11; a second end cover 14 is disposed at an opening at the other end of the cylinder 11, and is used for sealing a radial cross section between the cylinder 11 and the inner frame 12, so that one end of a hollow tube of the inner frame 12 is not closed, and fluid entering the bag-type filtering device enters the filtering assembly 1 from the inlet region 111 and the external region 112, and is discharged from the hollow tube of the inner frame 12 after being filtered by the filtering assembly 1.

In another embodiment of the present invention, both ends of the cylinder 11 respectively include an external connection region 112, and a first end cap 13 is disposed at an opening at one end of the cylinder 11 for completely closing the opening at one end of the cylinder 11; and a second end cover 14 is arranged at an opening at the other end of the cylinder body 11 and is used for sealing a radial section between the cylinder body 11 and the inner framework 12.

The second embodiment:

the present embodiment provides another filter assembly 1 for use in a cartridge filter arrangement. Referring to fig. 2, 3, 4 and 5, the filter assembly 1 includes a barrel 11, an inner frame 12, a filter membrane (not shown), a first end cap 13, a second end cap 14, a lance 15 and a tip 16.

In this embodiment, the lance 15 is fixed to the first end cap 13, the end 16 is a hollow tube with two open ends, one end is fixed to the second end cap 14, the other end is open, the hollow tube of the end 16 is communicated with the hollow tube of the inner frame 12, and the fluid enters the hollow tube of the end 16 from the hollow tube of the inner frame 12 and is discharged. The connection relationship of other components of the filter assembly 1 is the same as that of the first embodiment, and is not described herein again.

Referring to fig. 3, both ends of the barrel 11 respectively include external connection regions 112, the inlet region 111 respectively connects with the external connection regions 112, a set of fluid inlets are uniformly distributed in the inlet region 111 for the fluid to enter the filter medium region between the barrel 11 and the inner frame 12, in order to ensure the filtering efficiency, the aperture ratio of the inlet region 111 must satisfy a certain requirement, and the aperture ratio is related to the number and size of the fluid inlets. In the present embodiment, a set of through holes is added to the external region 112, so as to reduce the fluid residue, and the aperture ratio of the external region 112 is smaller than the aperture ratio of the inlet region 111, specifically, in the present embodiment, the size of the set of through holes added to the external region 112 is smaller than the size of the through holes of the inlet region 111, and the interval is large, so that the external region 112 is more stable than the inlet region 111, and the experience setting of the aperture ratio of the external region 112 can ensure that the barrel 11 does not deform or break under the high-temperature and high-pressure environment.

Referring to fig. 5, in the present embodiment, at least one pair of insertion pieces 161 is disposed along a direction perpendicular to an outer wall of the tip 16, and each insertion piece 161 becomes thinner gradually along the outer wall of the tip 16 in a counterclockwise direction or a clockwise direction. Specifically, in the prior art, the thickness of the insert sheet is uniform, and referring to fig. 10, the filter assembly 1 is installed in the cartridge filter device in such a manner that the insert sheet 161 is inserted into the fixing groove 331 of the cartridge filter device, and the insert sheet is inserted into the fixing groove 331 by rotating the head 16, so that the filter assembly 1 is fixed, and since the thickness of the insert sheet is uniform, the resistance is large during rotation, and the operation is inconvenient. By adopting the design of the embodiment, one end of the inserting piece 161 is thinner, and when the end head 16 rotates, the inserting piece can conveniently enter the fixing groove 331, so that the operation is more convenient.

In this embodiment, the other end of the end head 16 and the insert 161 surround the outer wall of the end head 16 and are at least provided with a circle of mounting groove 162 for accommodating an elastic sealing ring, and the end head 16 is completely attached to the fixing groove 331 through the elastic sealing ring, so that the filter assembly 1 is more stably mounted.

Example three:

referring to fig. 6 to 8, the filter device includes a filter element 1 and a first housing 2 according to the first embodiment, and the filter element 1 and the first housing 2 are made of a high polymer material, such as a polypropylene material, a polycarbonate material, a polysulfone material, and the like. The bag type filtering device can be used once or repeatedly, the filtering component 1 and the first shell 2 are welded through a hot melting technology, and the filtering component 1 does not need to be disassembled after the use. Specifically, the first housing 2 includes a body with openings at two ends and an inlet cover and an outlet cover fixed at two ends of the body, the inlet cover includes a first inlet 22, the outlet cover includes a first outlet 23, the second end cover 14 of the filter assembly 1 is welded to the outlet cover, the hollow pipe of the inner frame 12 is communicated with the first outlet 23, and the first end cover 13 of the filter assembly 1 and the inner wall of the inlet cover have a certain accommodating space. The fluid enters the inner cavity of the first housing 2 through the first inlet 22, is filtered by the filter assembly 1, and then is discharged from the first outlet 23.

In this embodiment, the first housing 2 further comprises a fixing bracket 21 for supporting the bag-type filtering device to be horizontally placed.

The following describes the process of using the bag filter to further describe the technical solution of this embodiment:

(1) And carrying out moist heat sterilization or irradiation sterilization treatment on the bag type filtering device.

(2) The bag-type filtering device is horizontally placed, and the bag-type filtering device is ensured not to roll when being horizontally placed through the fixing support 21. In the horizontal direction, the first inlet 22 is on one side of the bag filter, and the first outlet 23 is on the other side of the bag filter.

(3) The first inlet 22 is connected to a power device, such as an air compressor, a rotopump, or a peristaltic pump.

(4) Fluid is driven under pressure from the first inlet 22 into the internal cavity of the first housing 2 by the power means.

(5) Since the first end cap 13 is closed and the second end cap 14 is welded to the outlet cap, the fluid can only flow to the space between the outer wall of the cartridge 11 and the inner wall of the first housing 2, which is the filtration upstream space, and since the pressure in the space is higher than the filtration media area between the inner wall of the cartridge 11 and the inner frame 12, the fluid is forced into the filtration media area between the cartridge 11 and the inner frame 12 from the through holes of the inlet area 111 and the through holes of the circumscribed area 112.

(6) The fluid is filtered by the filter membrane in the filter medium region and then enters a downstream filtering space, namely enters the hollow pipe of the inner framework 12 from the through hole of the inner framework 12, further enters the first outlet 23 and is discharged from the bag type filtering device.

(7) After filtration is completed, the bag type filtering device is directly discarded if the bag type filtering device is disposable; if the bag-type filtering device is repeatedly used, the bag-type filtering device needs to be washed by water and dried at high temperature, and then the bag-type filtering device is used again.

Example four:

referring to fig. 9 and 10, the cartridge type filtering apparatus of the present embodiment includes the filtering element 1 according to the second embodiment and a second housing 3, the second housing 3 is made of stainless steel, the second housing 3 is reusable, and the filtering element 1 is detachably mounted on the second housing 3.

In this embodiment, the second housing 3 includes a body and a base 33, the base 33 includes a second inlet 31 and a second outlet 32, the body and the base 33 are fixedly connected by a stainless steel clamp, the filter assembly 1 is fixed to the base 33 by the end head 16, and the hollow pipe of the inner frame 12 of the filter assembly 1 is communicated with the second outlet 32. Specifically, the base 33 includes a fixing groove 331, and after the head 16 is placed in the fixing groove 331, the inserting sheet 161 is inserted into the fixing groove 331 by rotating the head 16, so as to fix the filter assembly 1 to the fixing groove 331.

In this embodiment, the fluid enters the inner cavity of the second housing 3 through the second inlet 31, is filtered by the filter assembly 1, and then is discharged from the second outlet 32.

The following describes the use of the cartridge filter device to further illustrate the technical solution of the present embodiment:

(1) The cartridge filter apparatus is generally upright and the base 33 is provided with the second inlet 31 on one side and the second outlet 32 on the other side.

(2) The filter assembly 1 is secured to the base 33 by the head 16.

(3) The body is mounted to the base 33 and secured by a clamp.

(4) The second inlet 31 is connected to the power plant conduit and the sterilization plant conduit.

(5) And (3) starting a sterilization device, carrying out damp-heat sterilization on the drum type filtering device, closing the sterilization device after the sterilization is finished, and naturally cooling the drum type filtering device.

(6) The power means is turned on and drive fluid enters the internal cavity of the second housing 3 from the second inlet 31.

(7) Since the filter assembly 1 is closed at one end and fixed at the other end to the base 33, the fluid entering the second housing 3 can only flow to the space between the outer wall of the barrel 11 and the inner wall of the second housing 3, which is the upstream space for filtering, and since the pressure in the space is higher than the pressure in the area of the filter medium between the inner wall of the barrel 11 and the inner frame 12, the fluid is forced to enter the area of the filter medium between the barrel 11 and the inner frame 12 from the through holes of the inlet area 111 and the through holes of the outer area 112;

(8) The fluid is filtered by the filter membrane in the filter medium region and then enters a filtering downstream space, namely enters the hollow pipe of the inner framework 12 from the through hole of the inner framework 12, enters the second outlet 32 from the hollow pipe and is discharged from the cartridge type filtering device.

(9) After filtering, the cylindrical filtering device needs to be washed by water, after the water washing, the filtering component 1 needs to be detached, and if the cylindrical filtering device is disposable, the filtering component 1 is directly discarded; if the filter assembly is repeatedly used, the filter assembly 1 needs to be dried at a high temperature and then installed in the second housing 3 again for continuous use.

Example five:

the embodiment provides a filtration system, including filter equipment and power device, through power device drive fluid gets into under certain pressure filter equipment, through filter component in the filter equipment filters the back, follow filter equipment's export is discharged. Specifically, the filter device is a bag type filter device as described in the third embodiment or a cartridge type filter device as described in the fourth embodiment, and the power device is an air compressor, a rotor pump or a peristaltic pump.

The filtering component, the filtering device and the filtering system of the utility model have the advantages that the external area and the inlet area of the cylinder body are provided with different opening rates, so that the tolerance of the cylinder body is ensured, the fluid residue in the filtering device is reduced, the fluid recovery rate is improved, and the cost is reduced; the utility model adds the fixed support on the shell, so that the filter device is more stable and safe when being placed; the utility model discloses a structure to the inserted sheet of end improves, makes more convenient when fixing filtering component in the shell. The utility model discloses convenient to use, efficient, low cost have higher practical value.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limited to the embodiments of the present invention, and it is obvious to those skilled in the art that other variations or changes of different forms can be made on the basis of the above description. All documents mentioned in this application are incorporated by reference into this application as if each were individually incorporated by reference.

Claims (10)

1. A filter assembly comprises a cylinder body, an inner framework and a filter membrane, wherein the cylinder body and the inner framework are hollow pipes with openings at two ends, and the inner framework is arranged in the hollow pipe of the cylinder body and is coaxial with the cylinder body; the filter membrane is fixed between the cylinder body and the inner framework; the outer wall of the cylinder body comprises an inlet area and an external area, the external area is arranged around at least one opening at one end of the outer wall of the cylinder body and extends to the middle part of the outer wall of the cylinder body, and the inlet area extends from the middle part of the outer wall of the cylinder body to the opening directions at two ends of the cylinder body respectively to be connected with the external area; the inlet area includes at least one set of fluid inlet that locates the stack shell outer wall, and the endoskeleton includes the fluid export, and the fluid discharges from the fluid export after filtering through the filter membrane from the fluid inlet, characterized in that, the circumscribed area includes a set of through-hole, the aperture ratio of circumscribed area is less than the aperture ratio of inlet area.

2. The filter assembly of claim 1, wherein the opening of the cartridge body at one end away from the circumscribed area is provided with a first end cap for completely closing the opening of the cartridge body at one end; and a second end cover is arranged at an opening at the other end of the cylinder body and used for sealing a radial section between the cylinder body and the inner framework, and fluid is filtered by the filter membrane from the fluid inlet and then is discharged from the hollow pipe of the inner framework through the fluid outlet.

3. The filter assembly of claim 2, further comprising a spear point and an end tip, wherein the spear point is fixed to the first end cap, the end tip is a hollow tube with two open ends, one end is fixed to the second end cap, the other end is open, the hollow tube of the end tip is communicated with the hollow tube of the inner frame, and the fluid is discharged from the hollow tube of the inner frame into the hollow tube of the end tip.

4. A filter assembly as claimed in claim 3, in which at least one pair of tabs is provided along the outer wall of the head in a direction perpendicular thereto, each tab tapering in a direction counter-clockwise or clockwise along the outer wall of the head.

5. The filter assembly of claim 4, wherein at least one groove is formed in an outer wall of the head surrounding the head between the other end of the head and the insert for receiving an elastomeric seal.

6. A filter assembly according to claim 2, wherein the first housing comprises a first inlet and a first outlet, the filter assembly being secured in the first housing, the fluid entering the interior of the first housing through the first inlet and being filtered by the filter assembly and exiting the first outlet.

7. The filtration device of claim 6, wherein the first housing further comprises a fixed bracket for supporting the filtration device in a horizontal position.

8. A filtration device comprising a filter element according to any one of claims 3 to 5 and a second housing, the second housing comprising a second inlet and a second outlet, the filter element being secured to the second housing by the tip, the fluid entering the interior of the second housing through the second inlet and being filtered by the filter element and exiting the second outlet.

9. A filtration system comprising a filtration apparatus according to any one of claims 6 or 7 and a motive means by which said fluid is driven under pressure into said filtration apparatus from said first inlet, filtered by said filter assembly and discharged from said first outlet.

10. A filtration system comprising the filtration apparatus of claim 8 and a motive device, wherein the motive device drives the fluid under pressure into the filtration apparatus from the second inlet, through the filter assembly, and out the second outlet.

Images