CN111167192A - Sand filtering device - Google Patents
Sand filtering device Download PDFInfo
- Publication number
- CN111167192A CN111167192A CN201811339079.5A CN201811339079A CN111167192A CN 111167192 A CN111167192 A CN 111167192A CN 201811339079 A CN201811339079 A CN 201811339079A CN 111167192 A CN111167192 A CN 111167192A
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- China
- Prior art keywords
- sand
- pipe
- lifting
- extraction
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004576 sand Substances 0.000 title claims abstract description 287
- 238000001914 filtration Methods 0.000 title abstract description 15
- 238000000605 extraction Methods 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000009287 sand filtration Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 239000002351 wastewater Substances 0.000 abstract description 9
- 238000000746 purification Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- 238000005406 washing Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4668—Regenerating the filtering material in the filter by moving the filtering element
- B01D24/4689—Displacement of the filtering material to a compartment of the filtering device for regeneration
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a sand filtering device, which comprises: a housing having a water inlet and a water outlet; the sand washer is arranged in the shell; the sand extracting pipe is arranged in the shell, connected to the sand washer and used for conveying the filter sand at the bottom of the shell to the sand washer, and a sand cavity and a plurality of sand extracting branches communicated with the sand cavity are formed at the lower end of the sand extracting pipe; and the sand extracting air pipe is communicated with the sand cavity to convey compressed air to the sand cavity. According to the sand filtering device provided by the embodiment of the invention, uniform sand extraction can be realized, the sand extraction effect is good, and the efficiency is high, so that dirty sand can be fully cleaned, and the filtering effect and the purification effect on waste water are improved.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a sand filtration device.
Background
In the related art, the bottom of the sand filtering device is generally constructed in a conical structure, dirty sand is deposited and gathered to the bottom of the conical structure under the action of gravity, and the sand lifting pipe extends into the bottom of the conical structure to lift the dirty sand into the sand washer for cleaning. However, the sand-extracting pipe is limited by a single opening, so that dirty sand at the bottom of the conical structure cannot be uniformly lifted to the sand washer by the sand-extracting pipe, the sand-extracting effect on the dirty sand at each part of the bottom of the conical structure is different, the whole sand-extracting effect is influenced, and the cleaning effect of the sand washer on the dirty sand is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the sand filtering device provided by the invention can uniformly extract sand, and has the advantages of good sand extraction effect and high sand extraction efficiency.
The sand filtering device according to the embodiment of the present invention comprises: a housing having a water inlet and a water outlet; the sand washer is arranged in the shell; the sand extracting pipe is arranged in the shell, connected to the sand washer and used for conveying the filter sand at the bottom of the shell to the sand washer, and a sand cavity and a plurality of sand extracting branches communicated with the sand cavity are formed at the lower end of the sand extracting pipe; and the sand extracting air pipe is communicated with the sand cavity to convey compressed air to the sand cavity.
According to the sand filtering device provided by the embodiment of the invention, uniform sand extraction can be realized, the sand extraction effect is good, and the efficiency is high, so that dirty sand can be fully cleaned, and the filtering effect and the purification effect on waste water are improved.
According to some embodiments of the invention, the sand extracting air pipes are multiple and are connected with the sand extracting branches in a one-to-one correspondence manner.
According to some embodiments of the invention, each sand extraction pipe is provided with a flow regulating device.
According to some embodiments of the invention, a sand wash chamber is defined within the housing, a bottom wall of the sand wash chamber being configured with a flat corresponding to the plurality of sand lifting branch positions.
According to some embodiments of the invention, a plurality of the sand lifting branches are distributed at intervals along the circumferential direction of the sand lifting pipe, and each sand lifting branch is obliquely arranged from top to bottom in a direction away from the central axis of the sand lifting pipe.
According to some embodiments of the invention, the sand lifting pipe is arranged with its axial direction parallel to the central axis of the housing, and the distance between the lower end of each sand lifting branch and the straight portion is equal.
According to some embodiments of the invention, the lower end of the sand lifting pipe is supported on the straight portion.
According to some embodiments of the invention, the sand wash chamber comprises: a cylindrical section having a cross-sectional area equal everywhere in the up-down direction; the circular truncated cone section is located the below of cylindricality section, the cross-sectional area of circular truncated cone section from top to bottom reduces gradually.
According to some embodiments of the invention, the sand screen apparatus further comprises: the water distributor is arranged in the shell and is communicated with the water inlet.
According to some embodiments of the invention, the sand extraction pipe, the sand extraction air pipe and the water distributor are one piece.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a sand filtering device according to an embodiment of the present invention.
Reference numerals:
a sand filtration device 100;
a housing 10; a water inlet 10 a; a water outlet 10 b; a sand washing cavity 11; a cylindrical section 11 a; a circular table section 11 b; a straight portion 12;
a sand washer 20; a sand washing water delivery pipe 21;
a sand extracting pipe 30; a sand chamber 31; a sand extraction branch 32; a sand extraction section 33;
a sand extraction air pipe 40; a liquid level meter 50; a water distributor 60; and a weir 70.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships illustrated in the drawings, are used for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A sand filtration apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1.
As shown in fig. 1, a sand filtering apparatus 100 according to an embodiment of the present invention includes a housing 10, a sand washer 20, a sand lifting pipe 30 and a sand lifting pipe 40, the housing 10 having a water inlet 10a and a water outlet 10b, the sand washer 20 being provided in the housing 10, the sand lifting pipe 30 being provided in the housing 10 and connected to the sand washer 20 for conveying filtered sand at the bottom of the housing 10 to the sand washer 20, the sand lifting pipe 30 being configured at a lower end thereof with a sand chamber 31 and a plurality of sand lifting branches 32 communicating with the sand chamber 31, the sand lifting pipe 40 communicating with the sand chamber 31 to convey compressed air to the sand chamber 31.
Specifically, the sand washer 20 is located in the housing 10 and is disposed adjacent to an upper portion of the housing 10, the sand lifting pipe 30 is connected below the sand washer 20, and the housing 10 accommodates therein sand filter for filtering and purifying wastewater. The waste water enters the shell 10 from the water inlet 10a, after the waste water is filtered and purified by sand filtration, filtrate is discharged out of the shell 10 from the water outlet 10b, dirty sand is deposited to the bottom of the shell 10, the lower end of the sand lifting pipe 30 is arranged close to the bottom wall of the shell 10, the sand lifting air pipe 40 conveys compressed air into the sand cavity 31 so that the pressure in the sand cavity 31 is lower than the external pressure, therefore, the dirty sand at the bottom of the shell 10 is pumped to the sand cavity 31 by the sand lifting branches 32, the dirty sand in the sand cavity 31 is continuously conveyed upwards to the sand washer 20 through the sand lifting pipe 30, the sand washer 20 cleans the dirty sand to remove dirt attached to the surface of the dirty sand, and the cleaned sand washing water is discharged out of the shell 10.
It should be noted that the extending directions of the sand lifting branches 32 are different from each other, that is, the sand lifting branches 32 can extend into the dirty sand distributed in different areas of the bottom of the casing 10, so that the dirty sand at the bottom of the casing 10 can be lifted into the sand washer 20 uniformly, and the efficiency of conveying the dirty sand is improved.
According to the sand filtering device 100 of the embodiment of the invention, the sand cavity 31 and the plurality of sand lifting branches 32 communicated with the sand cavity 31 are constructed below the sand lifting pipe 30, and compressed air is conveyed into the sand cavity 31 through the sand lifting air pipe 40 so as to pump dirty sand at the bottom of the shell 10 into the sand cavity 31 through the plurality of sand lifting branches 32, and then the dirty sand is conveyed upwards to the sand washer 20 through the sand lifting pipe 30 for cleaning.
In some embodiments of the present invention, as shown in fig. 1, the sand stripping air pipes 40 are plural and are connected to the plurality of sand stripping branches 32 in a one-to-one correspondence. Specifically, a plurality of sand extraction air pipes 40 are arranged at the lower end of the sand extraction pipe 30, each sand extraction air pipe 40 extends upwards and is communicated with the corresponding sand extraction branch 32, and the sand cavity 31 is indirectly communicated with the plurality of sand extraction air pipes 40 through the plurality of sand extraction branches 32, so that compressed air can be uniformly distributed into each sand extraction branch 32, the sand extraction amount of each sand extraction branch 32 is equal, and therefore, the sand extraction effect of the plurality of sand extraction branches 32 is more uniform.
Optionally, each sand stripping pipe 40 is provided with a flow regulating device (not shown in the figures). Specifically, flow control device can adjust its effective flow area who carries sand trachea 40 at place to adjust the compressed gas's of this interior circulation of sand trachea 40 flow, when the partial dirty sand of casing 10 bottom will take place to harden or has taken place to harden, can be through adjusting rather than the close flow that carries sand trachea 40 that carries sand branch road 32 communicates, improve the volume of the compressed air in this carries sand branch road 32, thereby improve the sand lifting volume of this carry sand branch road 32, in order to accelerate the promotion to dirty sand, avoid local dirty sand to harden in the bottom of casing 10.
In some examples of the present invention, as shown in fig. 1, a sand wash chamber 11 is defined in the housing 10, and a bottom wall of the sand wash chamber 11 is configured with a straight portion 12 corresponding to the positions of the plurality of sand lifting branches 32.
Specifically, the upper surface of the straight portion 12 is a horizontally arranged plane, dirty sand is deposited to the straight portion 12 and uniformly distributed on the straight portion 12, the lower end of the sand lifting branch 32, that is, the inlet of the dirty sand entering the sand lifting branch 32, is located above the straight portion 12, and it is worth explaining that in the sand filtration device in the related art, the part of the lower portion of the housing corresponding to the lower end of the sand lifting pipe is generally conical, and the lower end of the sand lifting pipe extends to the conical lower end of the housing, the bottom wall of the housing 10 in the embodiment of the present invention is configured as the straight portion 12, which reduces the processing difficulty and the processing cost of the housing 10, furthermore, the dirty sand can be uniformly deposited to the straight portion 12, the dirty sand can be uniformly lifted to the sand washer 20 through the plurality of sand lifting branch pipes at the bottom of the sand lifting pipe 30, and the length of the sand lifting pipe 30 is correspondingly shortened, thereby reducing the work done to the dirty sand in the sand lifting process, the sand extraction efficiency is improved.
In some specific examples of the present invention, as shown in fig. 1, the sand washing chamber 11 includes a cylindrical section 11a and a truncated cone section 11b, the cross-sectional area of the cylindrical section 11a is equal everywhere in the up-down direction, the truncated cone section 11b is located below the cylindrical section 11a, and the cross-sectional area of the truncated cone section 11b is gradually reduced from the top to the bottom. Specifically, the cylindrical section 11a is configured as a cylinder, the circular truncated cone section 11b is located below the cylindrical section 11a, the maximum cross-sectional area is equal to the cross-sectional area of the cylindrical section 11a, the bottom wall of the circular truncated cone section 11b is a straight portion 12 and is circular, dirty sand can be deposited and gathered to the straight portion 12 along the side wall of the circular truncated cone section 11b in the deposition process, and the dirty sand is uniformly distributed in the straight portion 12, so that the plurality of sand lifting branch pipes are favorable for uniformly lifting the dirty sand to the sand washer 20.
Alternatively, as shown in fig. 1, the lower end of the sand lifting pipe 30 is supported on the straight portion 12. Specifically, the lower extreme of sand extraction pipe 30 has sand extraction portion 33, sand extraction portion 33's cross-sectional area from top to bottom crescent, and sand extraction portion 33's minimum cross-sectional area equals sand extraction pipe 30's cross-sectional area, sand cavity 31 has been injectd to sand extraction portion 33's inside, a plurality of sand extraction branches 32 are by sand extraction portion 33's lateral wall inwardly extending and with sand cavity 31 intercommunication, sand extraction portion 33's diapire structure supports in straight portion 12 for planar structure, therefore, sand extraction pipe 30's installation in casing 10 is comparatively convenient, and can not take place to rock, sand extraction process is comparatively stable.
Further, a plurality of sand lifting branches 32 are distributed at intervals along the circumferential direction of the sand lifting pipe 30, and each sand lifting branch 32 is obliquely arranged from top to bottom in a direction away from the central axis of the sand lifting pipe 30. Like this, the distribution of the relative straight portion 12 of sand extraction pipe 30 is comparatively even, avoids appearing the dead angle region that the partial dirty sand on the straight portion 12 can't be pumped by the sand extraction branch pipe, and it is more even to carry the sand effect, and every slope setting of sand extraction branch road 32 is favorable to dirty sand to get into sand cavity 31 through carrying the sand branch pipe.
Preferably, as shown in fig. 1, the sand lifting pipe 30 is arranged with its axial direction parallel to the central axis of the housing 10, and the distance between the lower end of each sand lifting branch 32 and the straight portion 12 is equal. Specifically, the central axis of the sand extraction pipe 30 can be arranged coaxially with the central axis of the housing 10, so that a plurality of sand extraction branch pipes at the lower end of the sand extraction pipe 30 are just opposite to the straight portion 12, and the distance between the inlet of each sand extraction branch pipe 32 and the straight portion 12 is equal, so that dirty sand on the straight portion 12 uniformly enters the sand cavity 31 through the plurality of sand extraction branch pipes, and the sand extraction effect is better.
According to some embodiments of the present invention, with continued reference to the embodiment shown in FIG. 1, the sand screen apparatus 100 further includes a water distributor 60, the water distributor 60 being disposed within the housing 10 and communicating with the water inlet 10 a. The wastewater enters from the water inlet 10a and then flows into the shell 10 uniformly through the water distributor 60, so that the wastewater is in full contact with the filter sand, and the filtering and purifying effects of the filter sand on the wastewater are improved.
Alternatively, the sand stripping tube 30, the sand stripping air tube 40, and the water distributor 60 are a unitary piece. Specifically, the sand extraction pipe 30, the sand extraction air pipe 40 and the water distributor 60 can be manufactured through an integrated forming process, and the part of the sand extraction air pipe 40 is embedded at the lower end of the sand extraction pipe 30, so that the connection effect of the sand extraction air pipe 40 and the sand extraction pipe 30 is good, the situation that the sand extraction air pipe 40 and the sand extraction branch 32 are disconnected due to the displacement of the sand extraction air pipe 40 can be avoided, and the stability of the sand extraction effect is improved.
In some specific examples of the present invention, as shown in fig. 1, the sand filtration apparatus 100 further includes a liquid level meter 50, the liquid level meter 50 being provided outside the casing 10 and communicating with the water inlet 10a, the liquid level meter 50 being configured to detect resistance to water inflow. Specifically, the liquid level meter 50 is provided with a graduated scale, and the resistance of water inlet can be reflected by the level of the liquid level in the liquid level meter 50, so as to detect whether dirty sand needs to be cleaned or not, and discharge the sand washing water out of the shell 10.
In some alternative examples of the invention, as shown in fig. 1, the sand screen apparatus 100 further includes a weir 70, the weir 70 being disposed within the housing 10 and adjacent the outlet 10 b. Specifically, the overflow weir 70 is disposed in the housing 10 and is installed on the side wall of the housing 10, the overflow weir 70 is disposed adjacent to the upper end of the housing 10, and the clarified filtrate of the wastewater filtered and purified by the sand filter overflows into the overflow weir 70 and is discharged from the water outlet 10b, so that the water discharged from the water outlet 10b is the supernatant of the upper layer, and the quality of the discharged water is better.
According to some illustrative examples of the present invention, as shown in fig. 1, the sand washer 20 is further provided with a sand wash water lead-out pipe 21 for leading out sand wash water inside the sand washer 20 out of the housing 10. Specifically, after the compressed air is introduced into the sand cavity 31 through the sand extraction air pipe 40, the sand extraction pipe 30 lifts dirty sand and water into the sand washer 20 together due to the internal and external pressure difference, the dirty sand is washed by the hydraulic power and the friction of the compressed air, and the dirt attached to the surface of the dirty sand is washed into the water to form sand washing water, and the sand washing water is discharged out of the housing 10 through the sand washing water outlet pipe 21 due to the fact that the liquid level of the sand washing water in the sand washer 20 is higher than the liquid level outside the sand washer 20.
Other constructions and operations of the sand screen apparatus 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A sand filtration device, comprising:
a housing having a water inlet and a water outlet;
the sand washer is arranged in the shell;
the sand extracting pipe is arranged in the shell, connected to the sand washer and used for conveying the filter sand at the bottom of the shell to the sand washer, and a sand cavity and a plurality of sand extracting branches communicated with the sand cavity are formed at the lower end of the sand extracting pipe;
and the sand extracting air pipe is communicated with the sand cavity to convey compressed air to the sand cavity.
2. The sand filter device according to claim 1, wherein the sand extracting air pipes are multiple and are connected with the sand extracting branches in a one-to-one correspondence manner.
3. A sand filter unit according to claim 2, characterised in that each sand extraction pipe is provided with a flow regulating device.
4. The sand filter device of claim 1 wherein a sand wash chamber is defined within the housing, a bottom wall of the sand wash chamber being configured with a flat corresponding to the plurality of sand lifting branch positions.
5. The sand filter device according to claim 4, wherein a plurality of the sand lifting branches are distributed at intervals along the circumferential direction of the sand lifting pipe, and each sand lifting branch is obliquely arranged from top to bottom in a direction away from the central axis of the sand lifting pipe.
6. The sand filter device according to claim 4, wherein the sand lifting pipe is arranged with its axial direction parallel to the central axis of the housing, and the distance between the lower end of each sand lifting branch and the straight portion is equal.
7. The sand filtration device of claim 4 wherein the lower end of the sand lifting pipe is supported on the straight portion.
8. The sand filtration device of claim 4, wherein the sand wash chamber comprises:
a cylindrical section having a cross-sectional area equal everywhere in the up-down direction;
the circular truncated cone section is located the below of cylindricality section, the cross-sectional area of circular truncated cone section from top to bottom reduces gradually.
9. The sand filter device of any one of claims 1-8, further comprising:
the water distributor is arranged in the shell and is communicated with the water inlet.
10. The sand filtration device of claim 9 wherein the sand extraction tube, the sand extraction air tube, and the water distributor are a unitary piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339079.5A CN111167192B (en) | 2018-11-12 | 2018-11-12 | Sand filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339079.5A CN111167192B (en) | 2018-11-12 | 2018-11-12 | Sand filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111167192A true CN111167192A (en) | 2020-05-19 |
| CN111167192B CN111167192B (en) | 2024-08-16 |
Family
ID=70648632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811339079.5A Active CN111167192B (en) | 2018-11-12 | 2018-11-12 | Sand filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111167192B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112791465A (en) * | 2021-04-07 | 2021-05-14 | 微资源(上海)生物技术有限公司 | Active sand filter |
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| CN112791465A (en) * | 2021-04-07 | 2021-05-14 | 微资源(上海)生物技术有限公司 | Active sand filter |
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| Publication number | Publication date |
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| CN111167192B (en) | 2024-08-16 |
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