CN220899664U - Separation filter equipment suitable for alkali metal salt - Google Patents
Separation filter equipment suitable for alkali metal salt Download PDFInfo
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- CN220899664U CN220899664U CN202322333808.9U CN202322333808U CN220899664U CN 220899664 U CN220899664 U CN 220899664U CN 202322333808 U CN202322333808 U CN 202322333808U CN 220899664 U CN220899664 U CN 220899664U
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- solid
- alkali metal
- inner cylinder
- liquid
- box body
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- -1 alkali metal salt Chemical class 0.000 title claims abstract description 29
- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 27
- 238000000926 separation method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 238000005192 partition Methods 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000011344 liquid material Substances 0.000 abstract description 13
- 239000000498 cooling water Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011343 solid material Substances 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052730 francium Inorganic materials 0.000 description 1
- KLMCZVJOEAUDNE-UHFFFAOYSA-N francium atom Chemical compound [Fr] KLMCZVJOEAUDNE-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Extraction Or Liquid Replacement (AREA)
Abstract
The utility model provides a separation and filtration device suitable for alkali metal salt, which belongs to the technical field of chemical equipment and comprises a box body, an inner barrel, a feed pipe, an auger, a driving motor and a filter plate. According to the separation and filtration device suitable for the alkali metal salt, the solid-liquid pump conveys the solid-liquid mixed state materials to the inner cavity of the inner cylinder through the feeding pipe, the auger is driven to rotate, so that the solid-liquid mixed state materials in the inner cylinder are conveyed upwards, cooling water in the cooling channel can cool the solid-liquid mixed state materials in the inner cylinder, part of liquid materials in the solid-liquid mixed state materials enter the box body through the first liquid discharge hole, most of the solid-liquid mixed state materials enter the box body through the discharge hole at the top of the inner cylinder under the action of the auger and fall onto the filter plate, and the solid-liquid mixed state materials are cooled, so that the filtration and separation rate of the solid-liquid mixed state materials on the filter plate is improved.
Description
Technical Field
The utility model belongs to the technical field of chemical equipment, and particularly relates to a separation and filtration device suitable for alkali metal salts.
Background
Alkali metal salts generally refer to inorganic acid salts composed of six metal elements of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr), and common alkali metal salts comprise lithium bis-fluorosulfonyl imide salt applied to the field of lithium batteries; in the preparation process of the alkali metal salt, the filtrate is required to be separated and filtered, a static manner is generally adopted in the prior art, so that solid-liquid mixed state materials are cooled and separated into solid materials and liquid materials, and then the liquid materials and the fixed materials are respectively recovered, thereby completing the purification and filtration of the alkali metal salt filtrate. Because the heat in the solid-liquid mixed state material is difficult to remove in time, the standing time required by the solid-liquid mixed state material is prolonged, and the purification and filtration efficiency of the alkali metal salt filtrate is reduced.
Disclosure of utility model
The utility model aims to provide a separation and filtration device suitable for alkali metal salt, and aims to solve the problems that the existing alkali metal salt filtrate purification and filtration mode has long standing time and the purification and filtration efficiency is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided a separation filtration device suitable for alkali metal salts comprising:
A case;
The inner barrel is fixedly arranged in the box body along the vertical direction, a first liquid discharging hole is formed in the side wall of the inner barrel, a discharge hole for solid-liquid mixed state materials to pass through is formed in the top of the inner barrel, the discharge hole is communicated with the inner cavity of the box body, a cooling channel penetrating through the inner barrel along the vertical direction is formed in the inner barrel, an upper plug and a lower plug are arranged at the openings of the upper end and the lower end of the cooling channel, a partition plate is fixedly arranged at the top of the lower plug, the partition plate is arranged along the vertical direction, the cooling channel is divided into a water inlet channel and a water outlet channel by the partition plate, a water inlet pipe and a water outlet pipe are formed in the upper end of the partition plate, the water inlet pipe is communicated with the water inlet channel, and the water outlet pipe is communicated with the water outlet channel;
The feeding pipe is fixedly arranged at the bottom of the inner cylinder and is communicated with the inner cavity of the inner cylinder, and a solid-liquid pump is arranged on the feeding pipe and is used for conveying solid-liquid mixed state materials to the inner cavity of the inner cylinder;
The packing auger is rotatably arranged at the top of the box body along the vertical direction, extends downwards to the bottom of the inner cavity of the inner barrel and is used for conveying solid-liquid mixed state materials upwards;
the driving motor is fixedly arranged on the box body and used for driving the auger to rotate; and
The filter is fixedly arranged between the box body and the inner cylinder, and a second liquid draining hole is formed in the filter.
In one possible implementation manner, the number of the first liquid draining holes is a plurality of, and the first liquid draining holes are uniformly distributed on the side wall of the inner barrel.
In one possible implementation manner, a cover body is detachably mounted at the top opening of the box body, and both the auger and the driving motor are mounted on the cover body.
In one possible implementation, the output shaft of the drive motor is fixedly connected with the auger through a coupling.
In one possible implementation, a rolling bearing is mounted between the auger and the cover.
In one possible implementation manner, at least two supporting rods are fixedly mounted on the top of the inner cylinder, the supporting rods are uniformly distributed along the circumferential direction of the inner cylinder, and one end, away from the inner cylinder, of each supporting rod abuts against the inner side wall of the box body.
In one possible implementation, the filter plate is conical, and the cross-sectional dimension of the filter plate increases gradually from top to bottom.
In one possible implementation, the filter plate is fixed to the inner cylinder by welding.
In one possible implementation, a shutter is mounted on a side wall of the tank, the shutter being located above the filter plate.
In one possible implementation manner, a liquid discharge pipe is fixedly arranged at the bottom of the box body, and the liquid discharge pipe is communicated with the inner cavity of the box body.
Compared with the prior art, the scheme of the embodiment of the utility model is that the inner barrel is arranged in the box body, the side wall of the inner barrel is provided with the first liquid discharge hole, the first liquid discharge hole can only allow liquid materials to pass through and separate solid materials, the filter plate is arranged between the box body and the inner barrel, the filter plate is provided with the second liquid discharge hole, the second liquid discharge hole can only allow liquid materials to pass through and separate solid materials, the top of the inner barrel is provided with the discharge hole for allowing solid-liquid mixed state materials to pass through, the inner barrel is internally provided with the cooling channel, the upper end and the lower end of the cooling channel are respectively blocked by the upper plug and the lower plug, the cooling channel is separated into the water inlet channel and the water outlet channel by the baffle plate on the lower plug, and the top of the baffle plate is provided with the water inlet hole for communicating the water inlet channel and the water outlet channel. The cooling water enters the water inlet channel through the water inlet pipe, then enters the water outlet channel through the water through holes, and finally enters the water outlet pipe to be discharged. The solid-liquid pump is with solid-liquid mixed state material through the inner chamber of inlet pipe transport to the inner tube, driving motor passageway auger rotates, thereby carry the solid-liquid mixed state material in the inner tube upwards, the cooling water in the cooling channel can cool down the solid-liquid mixed state material in the inner tube, some liquid material in the solid-liquid mixed state material can enter into the inside of box earlier through first flowing back hole, and most solid-liquid mixed state material can enter into the inside of box and fall to the filter through the bin outlet at inner tube top under the effect of auger, through cooling down the solid-liquid mixed state material, thereby promoted the filtration separation rate of solid-liquid mixed state material on the filter, the liquid material finally enters into the inner chamber bottom surface of box, and the solid material is in on the filter screen.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a separation filter apparatus for alkali metal salts according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an inner barrel according to an embodiment of the present utility model;
FIG. 3 is a top view of an inner barrel according to an embodiment of the present utility model.
In the figure: 1. a case; 101. a cover body; 102. a flashboard; 103. a liquid discharge pipe; 2. an inner cylinder; 201. a first drain hole; 202. a discharge port; 203. upper blocking; 204. a lower plug; 205. a partition plate; 206. a water inlet channel; 207. a water outlet channel; 208. a water through hole; 209. a water inlet pipe; 210. a water outlet pipe; 211. a support rod; 3. a feed pipe; 301. a solid-liquid pump; 4. an auger; 5. a driving motor; 501. a coupling; 502. a rolling bearing; 6. a filter plate; 601. and a second drain hole.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 2, a separation filter device suitable for alkali metal salts according to the present utility model will now be described. The separation filter device suitable for alkali metal salt comprises: the device comprises a box body 1, an inner cylinder 2, a feeding pipe 3, a packing auger 4, a driving motor 5 and a filter plate 6. The inner cylinder 2 is fixedly arranged in the box body 1 along the vertical direction, a first liquid discharging hole 201 is formed in the side wall of the inner cylinder 2, a discharge hole 202 for solid-liquid mixed state materials to pass through is formed in the top of the inner cylinder 2, the discharge hole 202 is communicated with the inner cavity of the box body 1, a cooling channel penetrating through the inner cylinder 2 along the vertical direction is formed in the inner cylinder 2, an upper plug 203 and a lower plug 204 are arranged at the openings of the upper end and the lower end of the cooling channel, a partition 205 is fixedly arranged at the top of the lower plug 204, the partition 205 is arranged along the vertical direction, the partition 205 divides the cooling channel into a water inlet channel 206 and a water outlet channel 207, a water inlet hole 208 for communicating the water inlet channel 206 with the water outlet channel 207 is formed in the upper end of the partition 205, a water inlet pipe 209 and a water outlet pipe 210 are arranged on the lower plug 204, the water inlet pipe 209 is communicated with the water inlet channel 206, and the water outlet pipe 210 is communicated with the water outlet channel 207; the feeding pipe 3 is fixedly arranged at the bottom of the inner cylinder 2 and is communicated with the inner cavity of the inner cylinder 2, the feeding pipe 3 is provided with a solid-liquid pump 301, and the solid-liquid pump 301 is used for conveying solid-liquid mixed state materials to the inner cavity of the inner cylinder 2; the packing auger 4 is rotatably arranged at the top of the box body 1 along the vertical direction, the packing auger 4 extends downwards to the bottom of the inner cavity of the inner cylinder 2, and the packing auger 4 is used for conveying solid-liquid mixed state materials upwards; the driving motor 5 is fixedly arranged on the box body 1 and is used for driving the auger 4 to rotate; the filter plate 6 is fixedly arranged between the box body 1 and the inner cylinder 2, and a second liquid drain hole 601 is formed in the filter plate 6.
Compared with the prior art, the separation filtering device suitable for alkali metal salt is provided, the inner barrel 2 is installed in the box body 1, the first liquid drain hole 201 is formed in the side wall of the inner barrel 2, the first liquid drain hole 201 can only allow liquid materials to pass through and separate solid materials, the filter plate 6 is installed between the box body 1 and the inner barrel 2, the second liquid drain hole 601 is formed in the filter plate 6, the second liquid drain hole 601 can only allow liquid materials to pass through and separate solid materials, the discharge hole 202 for allowing solid-liquid mixed state materials to pass through is formed in the top of the inner barrel 2, the cooling channel is formed in the inner barrel 2, the upper end and the lower end of the cooling channel are respectively blocked by the upper plug 203 and the lower plug 204, the partition 205 on the lower plug 204 separates the cooling channel into the water inlet channel 206 and the water outlet channel 207, and the water through hole 208 communicated with the water inlet channel 206 and the water outlet channel 207 is formed in the top of the partition 205. The cooling water enters the water inlet channel 206 through the water inlet pipe 209, then enters the water outlet channel 207 through the water through holes 208, and finally is discharged through the water outlet pipe 210. The solid-liquid pump 301 conveys solid-liquid mixed state materials to the inner cavity of the inner cylinder 2 through the feeding pipe 3, the driving motor 5 is used for driving the auger 4 to rotate, so that the solid-liquid mixed state materials in the inner cylinder 2 are conveyed upwards, cooling water in the cooling channel can cool the solid-liquid mixed state materials in the inner cylinder 2, part of liquid materials in the solid-liquid mixed state materials can enter the inner part of the box body 1 through the first liquid discharge hole 201, most of the solid-liquid mixed state materials can enter the inner part of the box body 1 through the discharge hole 202 at the top of the inner cylinder 2 under the action of the auger 4 and fall onto the filter plate 6, the solid-liquid mixed state materials are cooled, and therefore the filtering separation rate of the solid-liquid mixed state materials on the filter plate 6 is improved, the liquid materials finally enter the bottom surface of the inner cavity of the box body 1, and the solid materials are positioned on the filter plate.
In some embodiments, referring to fig. 1, the number of the first drain holes 201 is plural, and the first drain holes are uniformly distributed on the sidewall of the inner cylinder 2. In this embodiment, since the number of the first liquid drain holes 201 is plural and is uniformly arranged on the side wall of the inner cylinder 2, the liquid material can be continuously filtered to the box 1 through the first liquid drain holes 201 in the process of upward conveying of the solid-liquid mixed material, so as to promote the rate of filtering separation.
In some embodiments, referring to fig. 1, a cover 101 is detachably mounted at the top opening of the case 1, and both the auger 4 and the driving motor 5 are mounted on the cover 101. In this embodiment, the case 1 is cylindrical, the top of the case is in an opening structure, the cover 101 is mounted at the top opening of the case 1, and the cover 101 is detachably connected with the case 1 through a screw. The cover 101 is used to seal the top opening of the case 1, thereby preventing foreign matters from outside from entering the inside of the case 1. The cover 101 also provides support for the auger 4 and the drive motor 5.
In some embodiments, referring to fig. 1, an output shaft of a driving motor 5 is fixedly connected with a packing auger 4 through a coupling 501. In this embodiment, the coupling 501 is installed between the output shaft of the driving motor 5 and the packing auger 4, so that the assembling difficulty of the driving motor 5 is reduced.
In some embodiments, referring to fig. 1, a rolling bearing 502 is installed between auger 4 and cover 101. In this embodiment, the rolling bearing 502 reduces frictional resistance between the packing auger 4 and the cover 101, and avoids a large amount of heat generated between the packing auger 4 and the cover 101 due to friction.
In some embodiments, referring to fig. 1 to 3, at least two support rods 211 are fixedly mounted on the top of the inner cylinder 2, the support rods 211 are uniformly arranged along the circumferential direction of the inner cylinder 2, and one end of the support rod 211 away from the inner cylinder 2 abuts against the inner side wall of the box 1. In this embodiment, a space for the solid-liquid mixed material to pass through is left between the top surface of the inner cylinder 2 and the bottom surface of the top cover, so that there is no direct contact between the inner cylinder 2 and the top cover. The bottom of inner tube 2 and box 1 fixed connection, in order to further promote the stability of inner tube 2, consequently at the top fixed mounting bracing piece 211 of inner tube 2, the quantity of bracing piece 211 is four, evenly arranges along the circumference of inner tube 2. The support rods 211 are radially provided on the inner tube 2. One end of the supporting rod 211 is welded and fixed with the side wall of the inner cylinder 2, and the other end of the supporting rod is abutted with the inner side wall of the box body 1, so that the inner cylinder 2 is prevented from shaking.
In some embodiments, referring to fig. 1, the filter plate 6 is conical, and the cross-sectional dimension of the filter plate 6 increases gradually from top to bottom. In this embodiment, the filter plate 6 is conical and is fixed around the inner cylinder 2. The cross section of the filter plate 6 gradually increases from top to bottom, so that the top surface of the filter plate 6 is inclined downwards to one side close to the inner side wall of the box body 1, and the flow of solid-liquid mixed material on the filter plate 6 is accelerated.
In some embodiments, the filter plate 6 is secured to the inner barrel 2 by welding.
In some embodiments, referring to fig. 1, a shutter 102 is mounted on a sidewall of the case 1, and the shutter 102 is located above the filter plate 6. In this embodiment, the bottom surface of the shutter 102 is flush with the lowest point of the top surface of the filter plate 6. The operator can open the shutter 102 and then remove the solid material from the filter screen.
In some embodiments, referring to fig. 1, a drain 103 is fixedly installed at the bottom of the case 1, and the drain 103 is in communication with the inner cavity of the case 1. In this embodiment, a drain pipe 103 is fixedly installed at the bottom of the tank 1, and a valve is installed on the drain pipe 103. When the liquid material in the tank 1 needs to be taken out, the valve on the liquid discharge pipe 103 is opened.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A separation filtration device suitable for use with alkali metal salts, comprising:
A case;
The inner barrel is fixedly arranged in the box body along the vertical direction, a first liquid discharging hole is formed in the side wall of the inner barrel, a discharge hole for solid-liquid mixed state materials to pass through is formed in the top of the inner barrel, the discharge hole is communicated with the inner cavity of the box body, a cooling channel penetrating through the inner barrel along the vertical direction is formed in the inner barrel, an upper plug and a lower plug are arranged at the openings of the upper end and the lower end of the cooling channel, a partition plate is fixedly arranged at the top of the lower plug, the partition plate is arranged along the vertical direction, the cooling channel is divided into a water inlet channel and a water outlet channel by the partition plate, a water inlet pipe and a water outlet pipe are formed in the upper end of the partition plate, the water inlet pipe is communicated with the water inlet channel, and the water outlet pipe is communicated with the water outlet channel;
The feeding pipe is fixedly arranged at the bottom of the inner cylinder and is communicated with the inner cavity of the inner cylinder, and a solid-liquid pump is arranged on the feeding pipe and is used for conveying solid-liquid mixed state materials to the inner cavity of the inner cylinder;
The packing auger is rotatably arranged at the top of the box body along the vertical direction, extends downwards to the bottom of the inner cavity of the inner barrel and is used for conveying solid-liquid mixed state materials upwards;
the driving motor is fixedly arranged on the box body and used for driving the auger to rotate; and
The filter is fixedly arranged between the box body and the inner cylinder, and a second liquid draining hole is formed in the filter.
2. The separation filter device for alkali metal salts according to claim 1, wherein the first liquid discharge holes are distributed uniformly on the side wall of the inner cylinder.
3. The separation filter device for alkali metal salts according to claim 1, wherein a cover is detachably mounted at the top opening of the tank, and the auger and the driving motor are mounted on the cover.
4. A separation filter device suitable for alkali metal salts as claimed in claim 1, wherein the output shaft of the drive motor is fixedly connected with the auger by a coupling.
5. A separation filter device for alkali metal salts as claimed in claim 3, wherein a rolling bearing is mounted between said auger and said cover.
6. A separation and filtration device suitable for alkali metal salt as claimed in claim 1, wherein at least two support rods are fixedly arranged at the top of the inner cylinder, the support rods are uniformly distributed along the circumferential direction of the inner cylinder, and one end of each support rod, which is far away from the inner cylinder, is abutted against the inner side wall of the box body.
7. A separation filter device for alkali metal salts as claimed in claim 1, wherein said filter plate has a conical shape, and wherein the cross-sectional dimension of said filter plate increases from top to bottom.
8. A separation filter suitable for alkali metal salts as claimed in claim 1 wherein said filter plate is secured to said inner cylinder by welding.
9. A separation filter device for alkali metal salts as claimed in claim 1, wherein a shutter is mounted on a side wall of said housing, said shutter being located above said filter plate.
10. A separation filter device for alkali metal salts as claimed in claim 1, wherein a drain is fixedly mounted at the bottom of said housing, said drain being in communication with the interior of said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322333808.9U CN220899664U (en) | 2023-08-29 | 2023-08-29 | Separation filter equipment suitable for alkali metal salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322333808.9U CN220899664U (en) | 2023-08-29 | 2023-08-29 | Separation filter equipment suitable for alkali metal salt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220899664U true CN220899664U (en) | 2024-05-07 |
Family
ID=90903419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322333808.9U Active CN220899664U (en) | 2023-08-29 | 2023-08-29 | Separation filter equipment suitable for alkali metal salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220899664U (en) |
-
2023
- 2023-08-29 CN CN202322333808.9U patent/CN220899664U/en active Active
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