CN113620557A - Filter screen of dehydrator and medium-high voltage dehydrator - Google Patents
Filter screen of dehydrator and medium-high voltage dehydrator Download PDFInfo
- Publication number
- CN113620557A CN113620557A CN202110998250.9A CN202110998250A CN113620557A CN 113620557 A CN113620557 A CN 113620557A CN 202110998250 A CN202110998250 A CN 202110998250A CN 113620557 A CN113620557 A CN 113620557A
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- Prior art keywords
- filter screen
- pipeline
- frame
- dehydrator
- medium
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 238000011001 backwashing Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract 2
- 239000010802 sludge Substances 0.000 claims description 47
- 238000007599 discharging Methods 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 230000018044 dehydration Effects 0.000 description 14
- 238000006297 dehydration reaction Methods 0.000 description 14
- 239000010410 layer Substances 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Abstract
The invention relates to the technical field of dewaterers, and discloses a filter screen of a dewaterer and a medium-high pressure dewaterer, wherein the filter screen of the dewaterer is of a spiral spring-shaped structure, filter materials are introduced into the spiral spring-shaped structure, and the side wall of the spiral spring-shaped structure is used for filtering liquid. The invention relates to a medium-high pressure dehydrator, which comprises: the filter screen is fixed on the frame, a gap is reserved between the filter screen and the side wall of the frame, the outlet end of the backwashing pipeline is located on the water filtering side of the filter screen, the outlet end of the feed pipeline is communicated with the mud filtering side of the filter screen, mud stays on one side of the filter screen, the inlet end of the filtering water discharging pipeline is arranged on the same side as the backwashing pipeline, and the mud discharging pipeline is arranged on the same side as the outlet end of the feed pipeline. The invention makes the filter screen be in the structural form of a spiral spring made of flat steel.
Description
Technical Field
The invention relates to the technical field of dewaterers, in particular to a filter screen of a dewaterer and a medium-high pressure dewaterer.
Background
At present, domestic dehydrators can be divided into the following parts according to dehydration pressure: supercritical high-pressure dehydrator (8-15Mpa), ultrahigh-pressure dehydrator (6-8MPa), high-pressure dehydrator (3-6MPa), medium-pressure dehydrator (1.6-3MPa) and low-pressure dehydrator (less than or equal to 1.6MPa), can divide into according to the structural style scope: plate and frame filter presses (square or round), belt sludge dewaterers and stacked screw sludge dewaterers.
The most important part of decision hydroextractor dewatering pressure is the filter screen, because plate and frame pressure filter (square or circular) and belt sludge dewaterer's dewatering pressure is higher, the price of filter screen is comparatively expensive and the life of filter screen is shorter, pile formula sludge dewaterer belongs to middling pressure formula dewatering machine, the circular piece that its filter screen was done for the stainless steel, divide into stationary blade and movable piece, install respectively on screw axis and hydroextractor mount, moisture flows from the filter space between stationary blade and the movable piece, equipment relies on the self-cleaning function between stationary blade and the movable piece simultaneously, wash the filter space, prevent to block up, nevertheless pile formula sludge dewaterer has following problem:
firstly, the clearance between the fixed sheet and the movable sheet is large, and only large sludge particles can be filtered, and the sludge with small size can be pretreated only by a method of adding chemical reagents;
secondly, the clearance between the fixed sheet and the movable sheet is large, the working pressure of the system is less than or equal to 3Mpa, the sludge with the pressure higher than the critical value of cell water wall breaking can not be treated, the dewatering effect is poor, and the stacked sludge dewatering machine can dewater the sludge to the water content of about 80%.
The fixed plate and the movable plate are relatively thin in thickness, cannot bear high working pressure, are easy to deform under the action of spiral thrust, are high in equipment failure rate, and need to be completely replaced after being worn, so that the replacement cost is high.
Disclosure of Invention
The invention provides a filter screen of a dehydrator and a medium-high pressure dehydrator, wherein a fixed sheet and a movable sheet of the filter screen of a screw laminating machine are designed into a whole, the filter screen is in a structural form similar to a spiral spring made of flat steel, the design requirement of the dehydrator on the filter screen can be met by utilizing the elasticity of a metal material, and the pressure born by the filter screen is more than or equal to 10 Mpa.
The invention provides a filter screen of a dehydrator, which is of a spiral spring-shaped structure, wherein the inside of the spiral spring-shaped structure is used for introducing filter substances, and the side wall of the spiral spring-shaped structure is used for filtering liquid.
Optionally, the spiral pitch of the filter screen is 0-1.0 mm.
Optionally, the diameter of the filter screen is 100-5000 mm.
The invention also provides a medium-high pressure dehydrator, which comprises:
a frame;
the filter screen is fixed on the frame, and a gap is reserved between the filter screen and the side wall of the frame;
the back washing pipeline is fixed on the frame, the outlet end of the back washing pipeline is positioned on the water filtering side of the filter screen, and the water filtering side is the side where water passes through the filter screen;
the feeding pipeline is fixed on the frame, the outlet end of the feeding pipeline is introduced into the mud filtering side of the filter screen, the mud filtering side is the side where the mud stays on the filter screen, and the mud filtering side and the water filtering side are respectively positioned on the two sides of the filter screen;
the filtered water discharge pipeline is fixed on the rack, and the inlet end of the filtered water discharge pipeline is arranged at the same side as the backwashing pipeline;
the sludge discharge pipeline is fixed on the frame, and the sludge discharge pipeline is arranged at the same side as the outlet end of the feeding pipeline.
Optionally, an adjusting mechanism is connected between the longitudinal end of the filter screen and the frame, and the adjusting mechanism is used for adjusting the longitudinal length of the filter screen.
Optionally, the filter screen is fixedly connected to the first end of the frame along a longitudinal first end portion of the filter screen, and the adjusting mechanism is connected between the second end of the filter screen and the second end of the frame along a longitudinal second end portion of the filter screen.
Optionally, the adjusting mechanism includes an adjusting bolt, the adjusting bolt is screwed with the second end of the frame, and the end of the adjusting bolt tightly abuts against the second end of the filter screen.
Optionally, there is one filter screen.
Optionally, the filter screens are multiple, the filter screens are nested together in sequence in a concentric circle manner, the filter screens are not in contact with each other, and the outlet end of a feeding pipeline is introduced into a cavity formed between every two adjacent filter screens.
Optionally, the plurality of filter screens are fixed to the frame by fixing devices, respectively.
Compared with the prior art, the invention has the beneficial effects that: the invention designs the fixed piece and the movable piece of the filter screen of the screw overlapping machine into a whole, so that the filter screen is in a structure form similar to a spiral spring made of flat steel, when in dehydration, muddy water is pressurized by a high-pressure ceramic plunger pump and then is sent into a dehydration cavity of a dehydrator through a feeding pipeline, the feeding pipeline has a stirring function, moisture flows out of the dehydration cavity through the gap of the filter screen to separate the sludge from the moisture, the dehydrator adopting the invention can filter the sludge with different sizes by adjusting the spiral pitch of the filter screen, the sludge with smaller size can be filtered without adding chemical reagents, simultaneously the working pressure of the system is increased to be not less than 10Mpa and exceeds the wall-breaking pressure value of sludge water molecules, the sludge with 98 percent of water content can be dehydrated to between 40 percent and 50 percent of water content, the volume of the sludge is reduced by more than 90 percent, the service life of the filter screen is long, the washing is easy and the replacement is convenient, the unit dehydration energy consumption of the medium-high pressure dehydrator provided by the invention is greatly reduced, and the energy is saved.
Drawings
Fig. 1 is a schematic structural diagram of a dehydrator screen according to an embodiment of the present invention, wherein D1 is an inner diameter, D2 is an outer diameter, D is a middle diameter, and f is a spiral pitch;
fig. 2 is a schematic structural diagram of a medium-high pressure dehydrator according to an embodiment of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a sectional view taken along line B-B in fig. 2.
Description of reference numerals:
1-a frame, 2-a filter screen, 21-an inner filter screen, 22-an outer filter screen, 3-a backwashing pipeline, 31-an inner filter screen backwashing pipeline, 32-an outer filter screen backwashing pipeline, 4-a feeding pipeline, 5-a filtered water discharging pipeline, 6-a sludge discharging pipeline, 7-a fixing device and 8-an adjusting mechanism.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
At present, domestic dehydrators can be divided into the following parts according to dehydration pressure: supercritical high-pressure dehydrator (8-15Mpa), ultrahigh-pressure dehydrator (6-8MPa), high-pressure dehydrator (3-6MPa), medium-pressure dehydrator (1.6-3MPa) and low-pressure dehydrator (less than or equal to 1.6MPa), can divide into according to the structural style scope: plate and frame filter presses (square or round), belt sludge dewaterers and stacked screw sludge dewaterers.
The most important part of decision hydroextractor dewatering pressure is the filter screen, because plate and frame pressure filter (square or circular) and belt sludge dewaterer's dewatering pressure is higher, the price of filter screen is comparatively expensive and the life of filter screen is shorter, pile formula sludge dewaterer belongs to middling pressure formula dewatering machine, the circular piece that its filter screen was done for the stainless steel, divide into stationary blade and movable piece, install respectively on screw axis and hydroextractor mount, moisture flows from the filter space between stationary blade and the movable piece, equipment relies on the self-cleaning function between stationary blade and the movable piece simultaneously, wash the filter space, prevent to block up, nevertheless pile formula sludge dewaterer has following problem:
firstly, the clearance between the fixed sheet and the movable sheet is large, and only large sludge particles can be filtered, and the sludge with small size can be pretreated only by a method of adding chemical reagents;
secondly, the clearance between the fixed sheet and the movable sheet is large, the working pressure of the system is less than or equal to 3Mpa, the sludge with the pressure higher than the critical value of cell water wall breaking can not be treated, the dewatering effect is poor, and the stacked sludge dewatering machine can dewater the sludge to the water content of about 80%.
The fixed plate and the movable plate are relatively thin in thickness, cannot bear high working pressure, are easy to deform under the action of spiral thrust, are high in equipment failure rate, and need to be completely replaced after being worn, so that the replacement cost is high.
As shown in fig. 1, in the filter screen of the dewatering machine according to the embodiment of the present invention, the filter screen 2 is a spiral spring-shaped structure, the inside of the spiral spring-shaped structure is used for introducing filtered substances, and the side wall of the spiral spring-shaped structure is used for filtering out liquid.
Optionally, the spiral pitch of the filter screen 2 is 0-1.0 mm.
Optionally, the diameter of filter screen 2 is 100-5000 mm.
The filter screen 2 of the invention adopts flat steel with the thickness of 0.4-3.00 mm and the width of 5-20 mm, and is rolled into a cylindrical flat steel spiral spring with the diameter of phi 100-5000 mm and the height of 0-5000 mm, namely: the spiral pitch f is 0-1 mm, D1 is 100-5000 mm, D2 is D1 ten (5-20) mm, the filter screen provided by the invention can bear the working pressure of more than or equal to 10Mpa, exceeds the wall-breaking pressure value of sludge water molecules, can dehydrate the sludge with the water content of 98% to the water content of 40-50%, so that the sludge volume is reduced by more than 90%, the service life of the filter screen is long, the flushing is easy, and the replacement is convenient.
As shown in fig. 2 to 4, a medium-high pressure dehydrator according to an embodiment of the present invention includes: a frame 1, a filter screen 2 and a back washing pipeline 3, the filter screen 2 is fixed on the frame 1, a gap is reserved between the filter screen 2 and the side wall of the frame 1, the backwashing pipeline 3 is fixed on the frame 1, the outlet end of the backwashing pipeline 3 is located on the water filtering side of the filter screen 1, the water filtering side is one side where water passes through the filter screen 2, the feed pipeline 4 is fixed on the frame 1, the outlet end of the feed pipeline 4 is led into the mud filtering side of the filter screen 2, the mud filtering side is mud and stays on one side of the filter screen 2, the mud filtering side and the water filtering side are respectively located on two sides of the filter screen 2, the filtered water discharging pipeline 5 is fixed on the frame 1, the inlet end of the filtered water discharging pipeline 5 is arranged on the same side as the backwashing pipeline 3, the sludge discharging pipeline 6 is fixed on the frame 1, and the sludge discharging pipeline 6 and the outlet end of the feed pipeline 4 are arranged on the same side.
The invention designs the fixed piece and the movable piece of the filter screen of the screw overlapping machine into a whole, so that the filter screen is in a structure form similar to a spiral spring made of flat steel, when in dehydration, muddy water is pressurized by a high-pressure ceramic plunger pump and then is sent into a dehydration cavity of a dehydrator through a feeding pipeline, the feeding pipeline has a stirring function, moisture flows out of the dehydration cavity through the gap of the filter screen to separate the sludge from the moisture, the dehydrator adopting the invention can filter the sludge with different sizes by adjusting the spiral pitch of the filter screen, the sludge with smaller size can be filtered without adding chemical reagents, simultaneously the working pressure of the system is increased to be not less than 10Mpa and exceeds the wall-breaking pressure value of sludge water molecules, the sludge with 98 percent of water content can be dehydrated to between 40 percent and 50 percent of water content, the volume of the sludge is reduced by more than 90 percent, the service life of the filter screen is long, the washing is easy and the replacement is convenient, the unit dehydration energy consumption of the medium-high pressure dehydrator provided by the invention is greatly reduced, and the energy is saved.
Because the clearance between traditional filter screen stationary blade and the movable plate is difficult to adjust, this is the main difficult problem of this equipment production, and this filter screen is in case wearing and tearing, and it is great to change the degree of difficulty, needs whole filter screen parts of changing.
In view of the above, in the present embodiment, an adjusting mechanism 8 is connected between the end of the filter screen 2 in the longitudinal direction and the frame 1, and the adjusting mechanism 8 is used for adjusting the longitudinal length of the filter screen 2.
The spiral pitch of the filter screen 2 can be adjusted between 0-1.0 mm through the adjusting mechanism 8, sludge of various sizes can be filtered, meanwhile, when the filter screen 2 is blocked by the sludge, the spiral pitch of the filter screen 2 can be increased through the adjusting mechanism 8, the backwashing pump is started, flushing water flows from the backwashing pipeline 3 to clean the filter screen 2 by utilizing the reverse osmosis principle, and after the cleaning is finished, the filter screen 2 is adjusted through the adjusting mechanism 8 to reset the spiral pitch.
In order to facilitate the processing and the installation, in this embodiment, the filter screen 2 is fixedly connected with the first end of the frame 1 along the longitudinal first end portion thereof, and the adjustment mechanism 8 is connected between the filter screen 2 and the second end of the frame 1 along the longitudinal second end portion thereof, and the adjustment is performed through a single side.
Optionally, the adjusting mechanism 8 includes an adjusting bolt, the adjusting bolt is screwed with the second end of the frame 1, and the end of the adjusting bolt tightly abuts against the second end of the filter screen 2.
Optionally, there is one screen 2.
Optionally, the filter screens 2 are multiple, the filter screens 2 are nested together in sequence in a concentric circle manner, the filter screens 2 are not in contact with each other, and the outlet end of one feeding pipeline 4 is introduced into a cavity formed between two adjacent filter screens 2.
The medium-high pressure dehydrator provided by the embodiment of the invention can adopt a structural form of forming a concentric circle by adopting a single layer or multiple layers of filter screens with different inner diameters, namely a structural form of Russian nesting doll, and can increase the contact area of muddy water and the filter screens along with the increase of the number of the filter screens 2, so as to improve the filtering efficiency, as shown in figures 1-3, the filter screens 2 respectively comprise an inner layer filter screen 21 and an outer layer filter screen 22, at this time, the outlet end of the feeding pipeline 4 is positioned between the inner layer filter screen 21 and the outer layer filter screen 22, the backwashing pipeline 3 is divided into an outer filter screen backwashing pipeline 32 and an inner filter screen backwashing pipeline 31 after entering the rack 1, the outer filter screen backwashing pipeline 32 is positioned outside the outer layer filter screen 22, and the inner filter screen backwashing pipeline 31 is positioned inside the inner layer filter screen 21.
Optionally, the plurality of filter screens 2 are fixed to the frame 1 by fixing devices 7, respectively.
The use method and the working principle are as follows:
the middle-high pressure dehydrator provided by the embodiment pressurizes sludge with the water content of 98% by the high-pressure ceramic plunger pump, and then sends the sludge into the dehydration cavity of the dehydrator through the feeding pipeline 4, the feeding pipeline 4 has a stirring function, and water flows out of the dehydration cavity through the gap between the outer layer filter screen 22 and the inner layer filter screen 21, so that the sludge is separated from the water;
when the filter screen 2 is blocked, the gap of the filter screen is adjusted by the adjusting bolt 8 through the adjusting structure 8, the gap of the filter screen is increased under the elastic action of the flat steel spring, the back washing pump is started, the filter screen is cleaned by utilizing the reverse osmosis principle, and after the cleaning is finished, the gap of the filter screen is returned to the dehydration state of the original dehydrator through adjusting the gap adjusting mechanism 8 of the filter screen, and the dehydration is carried out again.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. The filter screen of the dehydrator is characterized in that the filter screen (2) is of a spiral spring-shaped structure, filter materials are introduced into the spiral spring-shaped structure, and the side wall of the spiral spring-shaped structure is used for filtering liquid.
2. A dehydrator screen according to claim 1, wherein the helix pitch of screen (2) is 0-1.0 mm.
3. A dehydrator screen according to claim 1, wherein the diameter of screen (2) is 100-5000 mm.
4. The utility model provides a medium and high pressure dehydrator, includes frame (1), its characterized in that still includes: a sieve (2) according to claim 1 or 2 or 3, said sieve (2) being fixed to said frame (1), said sieve (2) being spaced from the side walls of said frame (1);
the backwashing pipeline (3) is fixed on the rack (1), the outlet end of the backwashing pipeline (3) is positioned on the water filtering side of the filter screen (1), and the water filtering side is the side where water passes through the filter screen (2);
the feeding pipeline (4) is fixed on the rack (1), the outlet end of the feeding pipeline (4) is introduced into the mud filtering side of the filter screen (2), the mud filtering side is the side where the mud stays on the filter screen (2), and the mud filtering side and the water filtering side are respectively positioned on two sides of the filter screen (2);
the filtered water discharge pipeline (5) is fixed on the rack (1), and the inlet end of the filtered water discharge pipeline (5) is arranged on the same side as the backwashing pipeline (3);
and the sludge discharge pipeline (6) is fixed on the rack (1), and the sludge discharge pipeline (6) and the outlet end of the feeding pipeline (4) are arranged on the same side.
5. The medium-high pressure dehydrator according to claim 4, wherein an adjusting mechanism (8) is connected between the end of the strainer (2) in the longitudinal direction and the frame (1), wherein the adjusting mechanism (8) is used for adjusting the longitudinal length of the strainer (2).
6. The medium-high pressure dehydrator according to claim 5, wherein a first end of the sieve (2) in its longitudinal direction is attached to a first end of the frame (1), and wherein the adjusting mechanism (8) is connected between a second end of the sieve (2) in its longitudinal direction and a second end of the frame (1).
7. Medium-high pressure extractor according to claim 6, characterized in that the adjusting mechanism (8) comprises an adjusting bolt, which is screwed to the second end of the frame (1), the end of the adjusting bolt abutting against the second end of the screen (2).
8. Medium-high-pressure dehydrator according to claim 4, wherein said sieve (2) is one.
9. The medium-high pressure dehydrator according to claim 4, wherein the number of the filter screens (2) is plural, the plurality of filter screens (2) are sequentially nested together in a concentric circle manner, the plurality of filter screens (2) are not in contact with each other, and the outlet end of one of the feeding pipes (4) is respectively led into the cavity formed between two adjacent filter screens (2).
10. Medium-high pressure dehydrator according to claim 9 wherein a plurality of said sieves (2) are fixed to said frame (1) by fixing means (7) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110998250.9A CN113620557A (en) | 2021-08-27 | 2021-08-27 | Filter screen of dehydrator and medium-high voltage dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110998250.9A CN113620557A (en) | 2021-08-27 | 2021-08-27 | Filter screen of dehydrator and medium-high voltage dehydrator |
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| Publication Number | Publication Date |
|---|---|
| CN113620557A true CN113620557A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110998250.9A Pending CN113620557A (en) | 2021-08-27 | 2021-08-27 | Filter screen of dehydrator and medium-high voltage dehydrator |
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| CN202107605U (en) * | 2011-06-30 | 2012-01-11 | 济南凯达环保有限公司 | Adjustable stacked spiral type sludge dewatering machine |
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| CN106082583A (en) * | 2016-08-24 | 2016-11-09 | 江苏鸿佑环保有限公司 | Space-changeable type spiral shell press-dehydrating all-in-one |
| CN205965211U (en) * | 2016-08-24 | 2017-02-22 | 江苏鸿佑环保有限公司 | Inorganic sludge dewaterer of rotary extrusion type |
| RU2646905C1 (en) * | 2017-10-13 | 2018-03-12 | Михаил Геннадьевич Зубов | Device for separation of solid and liquid phases and mobile element of its set of plate filter |
| CN108079664A (en) * | 2018-02-11 | 2018-05-29 | 卡塔罗精密部件（苏州）有限公司 | Filtration |
| CN207760213U (en) * | 2017-12-13 | 2018-08-24 | 福建东森节能环保科技股份有限公司 | A kind of sewage solid-liquid separation device |
| CN109758806A (en) * | 2019-01-18 | 2019-05-17 | 李艺 | A kind of inside and outside double-layer leaching net and inside and outside sieve pore cartridge type serialization Efficient dehydrator |
-
2021
- 2021-08-27 CN CN202110998250.9A patent/CN113620557A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202107605U (en) * | 2011-06-30 | 2012-01-11 | 济南凯达环保有限公司 | Adjustable stacked spiral type sludge dewatering machine |
| CN203916229U (en) * | 2014-06-20 | 2014-11-05 | 北京东方润泽生态科技股份有限公司 | Wound form gap filter plant |
| CN106082583A (en) * | 2016-08-24 | 2016-11-09 | 江苏鸿佑环保有限公司 | Space-changeable type spiral shell press-dehydrating all-in-one |
| CN205965211U (en) * | 2016-08-24 | 2017-02-22 | 江苏鸿佑环保有限公司 | Inorganic sludge dewaterer of rotary extrusion type |
| RU2646905C1 (en) * | 2017-10-13 | 2018-03-12 | Михаил Геннадьевич Зубов | Device for separation of solid and liquid phases and mobile element of its set of plate filter |
| CN207760213U (en) * | 2017-12-13 | 2018-08-24 | 福建东森节能环保科技股份有限公司 | A kind of sewage solid-liquid separation device |
| CN108079664A (en) * | 2018-02-11 | 2018-05-29 | 卡塔罗精密部件（苏州）有限公司 | Filtration |
| CN109758806A (en) * | 2019-01-18 | 2019-05-17 | 李艺 | A kind of inside and outside double-layer leaching net and inside and outside sieve pore cartridge type serialization Efficient dehydrator |
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Application publication date: 20211109 |