CN218687092U - Filtering and concentrating device - Google Patents

Abstract

The utility model provides a filtering and concentrating device, which comprises a shell, a filter cartridge, a second discharging pipe, a driving mechanism and a negative pressure mechanism; the shell is provided with a side wall in a conical barrel-shaped structure, the outer diameter of the lower end of the side wall of the shell is smaller than that of the upper end of the side wall of the shell, the shell is provided with a feeding pipe and a first discharging pipe which are respectively communicated with an inner cavity of the shell, and the feeding pipe is positioned above the first discharging pipe; the filter cartridge is rotatably accommodated in the inner cavity of the shell, the rotation axis of the filter cartridge extends along the vertical direction, the side wall of the filter cartridge is a filter screen, and the filter screen is in a conical cylindrical structure matched with the shape of the shell; the second discharge pipe is fixed at the bottom of the shell, the upper end of the second discharge pipe is rotatably connected to the center of the bottom of the filter cylinder and communicated with the inner cavity of the filter cylinder, and the lower end of the second discharge pipe extends out of the shell; the driving mechanism is arranged outside the shell and used for driving the filter cartridge to rotate; the negative pressure mechanism is arranged on the second discharge pipe and used for providing a negative pressure environment to drive the material to move.

Description

Filtering and concentrating device

Technical Field

The utility model relates to a chemical industry equipment technical field especially relates to a filter enrichment facility.

Background

The existing filtering concentrator is provided with a rotatable filtering rotor in a shell, and the filtering rotor is utilized to realize the functions of filtering and concentrating. However, although the existing filtration concentrator can ensure that the impurities cannot enter the inner cavity of the filtration rotor through the filtration holes of the filtration rotor, the flow direction of the material containing the impurities in the gap between the filtration rotor and the shell is relatively disordered, so that the impurities are easily attached to the outer wall of the filtration rotor to block the filtration holes, the circulation of the liquid through the filtration holes is influenced, and the production efficiency of the filtration concentrator is reduced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a filtration and concentration device capable of alleviating the adhesion of impurities to a filter cartridge.

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

according to an aspect of the present invention, a filtering and concentrating apparatus is provided, which includes a housing, a filter cartridge, a second discharging pipe, a driving mechanism, and a negative pressure mechanism; the shell is provided with a side wall in a conical barrel-shaped structure, the outer diameter of the lower end of the side wall of the shell is smaller than that of the upper end of the side wall of the shell, the shell is provided with a feeding pipe and a first discharging pipe which are respectively communicated with an inner cavity of the shell, and the feeding pipe is positioned above the first discharging pipe; the filter cartridge is rotatably accommodated in the inner cavity of the shell, the rotation axis of the filter cartridge extends along the vertical direction, the side wall of the filter cartridge is a filter screen, and the filter screen is in a conical cylindrical structure matched with the shell in shape; the second discharge pipe is fixed at the bottom of the shell, the upper end of the second discharge pipe is rotatably connected to the center of the bottom of the filter cylinder and is communicated with the inner cavity of the filter cylinder, and the lower end of the second discharge pipe extends out of the shell; the driving mechanism is arranged outside the shell and used for driving the filter cartridge to rotate; the negative pressure mechanism is arranged on the second discharge pipe and used for providing a negative pressure environment to drive the material to move.

According to one of the embodiments of the present invention, the taper of the filter screen is equal to the taper of the housing.

According to one of the embodiments of the present invention, wherein: the taper of the side wall of the shell is 45-75 degrees; and/or the taper of the filter screen is 45-75 degrees.

According to the utility model discloses a wherein one of them embodiment, the lateral wall of casing has along the first section and the second section of axial connection, first section is located the top of second section, the tapering of first section is less than the tapering of second section.

According to one embodiment of the present invention, the side wall of the filter cartridge has a third section and a fourth section connected in the axial direction, the third section is located above the fourth section, the taper of the third section is equal to the taper of the first section, and the taper of the fourth section is equal to the taper of the second section.

According to one embodiment of the invention, the feed direction of the feed pipe is opposite to the rotation direction of the filter cartridge.

According to the utility model discloses an in one of them embodiment, first discharging pipe is for linking more tubular construction and including at least two spinal branch pipes, at least two spinal branch pipes are followed the circumference interval arrangement of casing, at least two spinal branch pipes are connected via the antithetical couplet pipe.

According to one of the embodiments of the present invention, the inlet pipe is provided with a positive pressure mechanism for cooperating with the negative pressure mechanism to drive the material to move.

According to one embodiment of the present invention, the inner surface of the side wall of the housing is provided with a spiral guide step, and the first discharging pipe is located at a lower end of the guide step.

According to one of the embodiments of the present invention, wherein: the upper end of the guide step is flush with or lower than the upper end of the filter screen; and/or the lower end part of the guide step is flush with or lower than the lower end part of the filter screen; and/or the lower end part of the guide step is positioned at the bottom of the shell; and/or the upper end part of the guide step is positioned below the feeding pipe; and/or the screw pitch of the spiral corresponding to the guide step is 10 mm-200 mm; and/or the inclination angle of the spiral type corresponding to the guide step is 5-45 degrees; and/or the spiral direction of the spiral type corresponding to the guide step is consistent with the rotation direction of the filter cylinder; and/or the axis of the first discharge pipe is perpendicular to the tangent of the spiral lower end part corresponding to the guide step.

According to the above technical scheme, the utility model provides a filtering concentration device's advantage lies in with positive effect:

the utility model provides a filter enrichment facility includes casing and cartridge filter. The lateral wall of casing is big-end-up's awl tubular structure, and the lateral wall of cartridge filter is the filter screen, and the filter screen is the awl tubular structure with the shape assorted of the lateral wall of casing. Through the structure design, the utility model discloses can make the adnexed impurity receive gravity and drop by the filter screen on the filter screen of awl tubular structure, alleviate the adnexed problem of impurity on the filter screen of cartridge filter in view of the above, avoid blockking up the mesh of filter screen, guarantee liquid via the circulation of mesh, promote the production efficiency who filters concentrated machine.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic perspective view of a filtration concentration apparatus according to an exemplary embodiment;

FIG. 2 is a front view of the filtration concentrator shown in FIG. 1;

FIG. 3 is a partial cross-sectional view of the filter concentrator assembly shown in FIG. 1;

FIG. 4 is a partial cross-sectional view of a filter concentrator device according to another exemplary embodiment;

FIG. 5 is a partial cross-sectional view of a filter concentrator device according to another exemplary embodiment;

fig. 6 is a schematic perspective view of a filtration concentration apparatus according to another exemplary embodiment.

The reference numerals are explained below:

100. a housing;

110. a side wall;

120. a guide step;

130. a feed pipe;

140. a first discharge pipe;

141. a sub-tube;

142. connecting pipes;

150. a second discharge pipe;

200. a filter cartridge;

210. a side wall;

300. a drive mechanism;

310. a drive motor;

320. a drive shaft;

a. a first stage;

b. a second stage;

c. a third stage;

d. and a fourth stage.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

Referring to fig. 1, a schematic perspective view of a filtration and concentration apparatus according to the present invention is representatively illustrated. In this exemplary embodiment, the present invention provides a filtration and concentration apparatus, which is described by way of example as applied to a filtration and concentration machine. It will be readily appreciated by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to adapt the relevant design of the present invention to other types of filter concentrator devices, and such changes are within the scope of the principles of the filter concentrator device as set forth herein.

As shown in fig. 1, in an embodiment of the present invention, the filtration concentration apparatus at least includes a housing 100, a filter cartridge 200, a driving mechanism 300, and a negative pressure mechanism. Referring to fig. 2-3, representatively illustrated in fig. 2 is a partial cross-sectional view of a filter concentrator which can embody principles of the present disclosure; a schematic perspective view of a portion of a filter concentrator embodying the principles of the present invention is representatively illustrated in fig. 3. The structure, connection and functional relationship of the main components of the filtration and concentration device according to the present invention will be described in detail with reference to the drawings.

As shown in fig. 1 to 3, in an embodiment of the present invention, the housing 100 has a sidewall 110 having a cone-shaped structure, and an outer diameter of a lower end of the sidewall 110 of the housing 100 is smaller than an outer diameter of an upper end. The housing 100 is provided with a feeding pipe 130 and a first discharging pipe 140 respectively communicated with the inner cavity of the housing 100, the feeding pipe 130 is positioned above the first discharging pipe 140, and the first discharging pipe 140 is used for discharging slurry filtered from the material. The filter cartridge 200 is rotatably received in the inner cavity of the housing 100, and the rotation axis of the filter cartridge 200 extends in a vertical direction. Wherein, the lateral wall 210 of the filter cartridge 200 is a filter screen, and the filter screen is a cone-shaped cylindrical structure matched with the shape of the lateral wall 110 of the housing 100, that is, the filter cartridge 200 can filter impurities by using the meshes of the filter screen, and the impurities are prevented from entering the inner cavity of the filter cartridge 200. The housing 100 is further provided with a second discharge pipe 150, the second discharge pipe 150 is fixed to the bottom of the housing 100, the upper end of the second discharge pipe 150 is rotatably connected to the center of the bottom of the filter cartridge 200 (i.e., the rotation axis of the filter cartridge 200) and is communicated with the inner cavity of the filter cartridge 200, the lower end of the second discharge pipe 150 extends out of the housing 100, and the second discharge pipe 150 is used for discharging clarified liquid. The driving mechanism 300 is disposed outside the housing 100 for driving the filter cartridge 200 to rotate. The negative pressure mechanism is arranged on the second discharging pipe 150 and is used for providing negative pressure to drive the material to move. Through the structure design, the utility model discloses can make the filter screen of awl tubular structure on adnexed impurity receive gravity and drop by the filter screen, alleviate the adnexed problem of impurity on the filter screen of cartridge filter 200 in view of the above, avoid blockking up the mesh of filter screen, guarantee liquid via the circulation of mesh, promote the production efficiency who filters the concentrated machine.

In an embodiment of the present invention, the taper of the filter screen of the filter cartridge 200 and the taper of the sidewall 110 of the housing 100 may be equal. Through the structure design, the utility model discloses can further improve equipment's overall structure uniformity for the circulation of liquid in the clearance between lateral wall 110 and filter screen is more even, smooth and easy.

In an embodiment of the present invention, the taper of the conical cylinder corresponding to the sidewall 110 of the housing 100 may be 45 ° to 75 °, for example, 45 °, 50 °, 70 °, 75 °. In some embodiments, the taper of the corresponding conical cylinder shape of the sidewall 110 of the housing 100 may also be less than 45 °, or may be greater than 75 °, for example, 40 °, 80 °, and the like, which is not limited to this embodiment.

Further, the sidewall 110 of the housing 100 may have a taper of 60 ° corresponding to the tapered cylindrical shape.

In an embodiment of the present invention, the taper of the conical cylinder corresponding to the filter screen of the filter cartridge 200 may be 45 ° to 75 °, for example, 45 °, 50 °, 70 °, 75 °. In some embodiments, the taper of the cone-shaped filter screen of the filter cartridge 200 may also be less than 45 °, or greater than 75 °, such as 40 °, 80 °, and the like, which is not limited to this embodiment.

Further, the filter screen of the filter cartridge 200 may have a taper of 60 ° corresponding to the shape of the cone cylinder.

In an embodiment of the present invention, the feeding direction of the feeding pipe 130 and the rotation direction of the filter cartridge 200 may be opposite. Specifically, the feeding pipe 130 is connected to the housing 100 along a direction tangential to a corresponding circle of the housing 100, and a direction of the material entering the housing 100 through the tangential path is a feeding direction of the feeding pipe 130, and correspondingly, at a position of the tangential path, a rotation direction of the filter cartridge 200 is opposite to the feeding direction. Through the structure design, the utility model discloses can make and can be fully broken up by reverse circulation environment via the material with two 130 initial entering casings 100, further promote the filter effect.

In an embodiment of the present invention, the feeding pipe 130 may be provided with a positive pressure mechanism, and the main structure can be matched with the negative pressure mechanism to drive the material to move.

Referring to fig. 4, a partial cross-sectional view of a filter concentrator, in another exemplary embodiment, that can embody principles of the present invention is representatively illustrated in fig. 4.

As shown in fig. 4, in an embodiment of the present invention, the inner surface of the side wall 110 of the housing 100 is provided with a spiral guide step 120, and the first discharge pipe 140 is located at a lower end portion of the guide step 120. Through the structure design, the utility model discloses can utilize guide step 120 to provide the guide function for the material that is arranged in the clearance between cartridge filter 200 and casing 100 can flow from top to bottom along the route of screw-tupe, strengthens the washing away to the surface of cartridge filter 200 lateral wall in view of the above, alleviates impurity at the adhesion problem of the surface of cartridge filter 200 lateral wall, avoids blockking up the mesh of filter screen, guarantees that liquid promotes the production efficiency of filtering concentrated machine via the circulation in mesh.

As shown in fig. 4, based on the structural design that the inner surface of the sidewall 110 of the housing 100 is provided with the guide step 120, in an embodiment of the present invention, the upper end of the guide step 120 may be flush with the upper end of the sidewall 210 (i.e., the filter screen) of the filter cartridge 200. Through the structure design, the utility model discloses can make the guide effect scope of guide step 120 cover the upper end of filter screen completely in the direction of height, further alleviate the impurity adhesion phenomenon of filter screen. In some embodiments, the upper end of the guiding step 120 may be lower than the upper end of the sidewall 210 of the filter cartridge 200, and is not limited to this embodiment.

As shown in fig. 4, based on the structural design that the inner surface of the sidewall 110 of the housing 100 is provided with the guide step 120, in an embodiment of the present invention, the lower end of the guide step 120 may be lower than the lower end of the sidewall 210 (i.e., the screen) of the filter cartridge 200. Through the structure design, the utility model discloses can make the guide effect scope of guide step 120 cover the lower tip of filter screen completely on the direction of height, further alleviate the impurity adhesion phenomenon of filter screen. In some embodiments, the lower end of the guiding step 120 may be flush with the upper end of the sidewall 210 of the filter cartridge 200, and the embodiment is not limited thereto.

As shown in fig. 4, based on the structural design that the inner surface of the sidewall 110 of the housing 100 is provided with the guide step 120, in an embodiment of the present invention, the lower end of the guide step 120 may be located at the bottom of the housing 100. Through the structure design, the utility model discloses can make the guide effect of guide step 120 more abundant. In some embodiments, the lower end of the guiding step 120 may also be located at a position near the bottom of the inner surface of the sidewall 110 of the housing 100, and is not limited to this embodiment.

As shown in fig. 4, based on the structural design that the inner surface of the sidewall 110 of the housing 100 is provided with the guide step 120, in an embodiment of the present invention, the upper end of the guide step 120 may be located below the feeding pipe 130. Through the above structure design, the utility model discloses can guarantee that the material that gets into casing 100 by inlet pipe 130 can receive the guide of guide step 120 more fully for the flow path of the material that is arranged in the clearance between cartridge filter 200 and casing 100 can present spiral regular path more fully. In some embodiments, the feeding pipe 130 may be flush with the upper end of the guiding step 120, and is not limited to this embodiment.

Based on the structural design that the inner surface of the side wall 110 of the housing 100 is provided with the guiding step 120, in an embodiment of the present invention, the pitch of the spiral shape corresponding to the guiding step 120 may be 10mm to 200mm, for example, 10mm, 50mm, 100mm, 200mm, etc. In some embodiments, the pitch of the spiral shape corresponding to the guiding step 120 may also be less than 10mm, or may be greater than 200mm, such as 9mm, 220mm, and the like, which is not limited to this embodiment.

Due to the structural design that the inner surface of the side wall 110 of the housing 100 is provided with the guiding step 120, in an embodiment of the present invention, the inclination angle of the spiral corresponding to the guiding step 120 may be 5 ° to 45 °, for example, 5 °, 15 °, 30 °, 45 °. In some embodiments, the inclination angle of the spiral shape corresponding to the guiding step 120 may also be less than 5 °, or may be greater than 45 °, for example, 4 °, 46 °, and the like, and is not limited to this embodiment.

Based on the structural design that the inner surface of the sidewall 110 of the housing 100 is provided with the guiding step 120, in an embodiment of the present invention, the spiral direction of the spiral type corresponding to the guiding step 120 may be consistent with the rotation direction of the filter cartridge 200. Through the structure design, the utility model discloses can guarantee that the material receives the rotatory flow direction that produces of cartridge filter 200 and the helical direction of guide step 120 is roughly the same, avoids leading to the flow direction confusion of material because of the direction of rotation of cartridge filter 200 is opposite with the helical direction.

Due to the structural design of the inner surface of the side wall 110 of the housing 100 having the guiding step 120, in an embodiment of the present invention, the axis of the first discharging pipe 140 may be perpendicular to the tangent line of the lower end of the spiral shape corresponding to the guiding step 120. Through the structure design, the utility model discloses can make the material (being the concentrate) with impurity guide to casing 100 bottom back by guide step 120, more smoothly, discharge via first discharging pipe 140 fast, further promote the production efficiency who filters enrichment facility.

Referring to fig. 5, a partial cross-sectional view of a filter concentrator, in another exemplary embodiment, that can embody principles of the present invention is representatively illustrated in fig. 5.

As shown in fig. 5, in an embodiment of the present invention, the sidewall 110 of the casing 100 may have a first section a and a second section b connected in an axial direction (e.g., a vertical direction in the figure), the first section a is located above the second section b, and the taper of the first section a is smaller than that of the second section b.

As shown in fig. 5, based on the structural design that the side wall 110 of the housing 100 has a first section a and a second section b, in an embodiment of the present invention, the side wall 210 of the filter cartridge 200 may have a third section c and a fourth section d connected in an axial direction (e.g., a vertical direction in the figure), the third section c is located above the fourth section d, the taper of the third section c is equal to that of the first section a, and the taper of the fourth section d is equal to that of the second section b. In some embodiments, when the sidewall 110 of the body has a first section a and a second section b, and the sidewall 210 of the filter cartridge 200 has a third section c and a fourth section d, the taper of the third section c may not be equal to the taper of the first section a, and the taper of the fourth section d may not be equal to the taper of the second section b, but it is required to ensure that the taper of the third section c is less than the taper of the fourth section d, which is not limited by the present embodiment.

Referring to fig. 6, a schematic perspective view of a filtration concentrator in another exemplary embodiment that embodies principles of the present invention is representatively illustrated in fig. 6.

As shown in fig. 6, in an embodiment of the present invention, the first discharging pipe 140 may be a multi-pipe structure. Specifically, the first discharge pipe 140 includes three sub-pipes 141, and the three sub-pipes 141 are arranged at intervals in the circumferential direction of the casing 100 and connected via a connecting pipe 142, and the connecting pipe 142 is provided with an outlet capable of discharging slurry merged by the three sub-pipes in parallel. In some embodiments, when the first discharge pipe 140 is a multi-connected pipe structure, it may also include two, four or more sub-pipes 141, which is not limited to this embodiment.

It should be noted herein that the filter concentrator shown in the drawings and described in the present specification are but a few examples of the many types of filter concentrators that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details or any of the components of the filtration and concentration apparatus shown in the drawings or described in the specification.

As another example, in an embodiment of the present invention, the filtration concentration device provided by the present invention may further include a support, the support is disposed outside the casing 100, and the support is used for supporting the casing 100. In some embodiments, the housing 100 may also be fixedly installed by hoisting, or may be fixedly installed by directly fixing on a base, and the like, which is not limited to this embodiment.

As another example, as shown in fig. 2, in an embodiment of the present invention, the driving mechanism 300 may include a driving motor 310 and a driving shaft 320, the driving motor 310 is fixed on the outside (for example, but not limited to, the top) of the housing 100 by a fixing structure (for example, a mounting seat), the driving motor 310 is in transmission connection with a transmission shaft, and the transmission shaft extends into the housing 100 and is fixedly connected to the center of the top of the filter cartridge 200, i.e., the transmission shaft coincides with the rotation axis of the filter cartridge 200. In addition, other transmission components, such as a speed reducer and a speed-adjusting gear box, may be disposed between the driving mechanism 300 and the driving shaft 320.

To sum up, the present invention provides a filtration concentration device, which comprises a housing 100 and a filter cartridge 200. The sidewall 110 of the housing 100 is a tapered cylindrical structure with a large top and a small bottom, the sidewall of the filter cartridge 200 is a filter screen, and the filter screen is a tapered cylindrical structure matching with the sidewall 110 of the housing 100. Through the structure design, the utility model discloses can make the filter screen of awl tubular structure on adnexed impurity receive gravity and drop by the filter screen, alleviate the adnexed problem of impurity on the filter screen of cartridge filter 200 in view of the above, avoid blockking up the mesh of filter screen, guarantee liquid via the circulation of mesh, promote the production efficiency who filters the concentrated machine.

Exemplary embodiments of a filtration and concentration apparatus as set forth in the present disclosure are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims (10)

1. A filtration and concentration apparatus, comprising:

the device comprises a shell, a first discharging pipe and a second discharging pipe, wherein the shell is provided with a side wall in a conical barrel-shaped structure, the outer diameter of the lower end of the side wall of the shell is smaller than that of the upper end of the side wall of the shell, the shell is provided with a feeding pipe and the first discharging pipe which are respectively communicated with an inner cavity of the shell, and the feeding pipe is positioned above the first discharging pipe;

the filter cylinder is rotatably accommodated in the inner cavity of the shell, the rotation axis of the filter cylinder extends along the vertical direction, the side wall of the filter cylinder is a filter screen, and the filter screen is in a conical cylindrical structure matched with the shape of the shell;

the second discharging pipe is fixed at the bottom of the shell, the upper end of the second discharging pipe is rotatably connected to the center of the bottom of the filter cylinder and is communicated with the inner cavity of the filter cylinder, and the lower end of the second discharging pipe extends out of the shell;

the driving mechanism is arranged outside the shell and used for driving the filter cartridge to rotate; and

and the negative pressure mechanism is arranged on the second discharge pipe and used for providing a negative pressure environment to drive the material to move.

2. The filter concentrator of claim 1, wherein the taper of the screen is equal to the taper of the housing.

3. The filtration concentration apparatus of claim 1, wherein:

the taper of the side wall of the shell is 45-75 degrees; and/or

The taper of the filter screen is 45-75 degrees.

4. The filter concentrator of claim 1, wherein the sidewall of the housing has first and second axially connected sections, the first section being positioned above the second section, the first section having a taper that is less than a taper of the second section.

5. The filter concentrator of claim 4, wherein the sidewall of the filter cartridge has third and fourth axially connected segments, the third segment being positioned above the fourth segment, the third segment having a taper equal to the taper of the first segment, and the fourth segment having a taper equal to the taper of the second segment.

6. The filtration concentrator of claim 1, wherein the feed direction of the feed tube is opposite to the direction of rotation of the filter cartridge.

7. The filtration concentration apparatus of claim 1, wherein the first discharge pipe is a multi-connected pipe structure and includes at least two sub-pipes arranged at intervals along a circumferential direction of the housing, the at least two sub-pipes being connected via a connecting pipe.

8. The filtration concentrator of claim 1, wherein the feed pipe is provided with a positive pressure mechanism for driving material movement in cooperation with the negative pressure mechanism.

9. The filtration concentration apparatus according to any one of claims 1 to 8, wherein the inner surface of the side wall of the housing is provided with a spiral-type guide step, and the first discharge pipe is located at a lower end portion of the guide step.

10. The filtration concentration apparatus of claim 9, wherein:

the upper end of the guide step is flush with or lower than the upper end of the filter screen; and/or

The lower end of the guide step is flush with or lower than the lower end of the filter screen; and/or

The lower end part of the guide step is positioned at the bottom of the shell; and/or

The upper end part of the guide step is positioned below the feeding pipe; and/or

The screw pitch of the spiral corresponding to the guide step is 10 mm-200 mm; and/or

The inclination angle of the spiral corresponding to the guide step is 5-45 degrees; and/or

The spiral direction of the spiral corresponding to the guide step is consistent with the rotation direction of the filter cylinder; and/or

The axis of the first discharge pipe is perpendicular to the tangent of the spiral lower end part corresponding to the guide step.

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