CN207347213U - A kind of activated carbon capsule - Google Patents
A kind of activated carbon capsule Download PDFInfo
- Publication number
- CN207347213U CN207347213U CN201721258886.5U CN201721258886U CN207347213U CN 207347213 U CN207347213 U CN 207347213U CN 201721258886 U CN201721258886 U CN 201721258886U CN 207347213 U CN207347213 U CN 207347213U
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- Prior art keywords
- charcoal
- activated carbon
- intracapsular
- courage
- outer layer
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A kind of activated carbon capsule that the application provides, including charcoal capsule outer layer, the intracapsular courage of charcoal and active carbon particle;In a ring, charcoal capsule outer layer is internally formed ring cavity to charcoal capsule outer layer;In a ring, the intracapsular courage of charcoal is arranged inside charcoal capsule outer layer the intracapsular courage of charcoal;Active carbon particle is arranged inside the intracapsular courage of charcoal;Outer layer opening is provided with charcoal capsule outer layer, outer layer opening is set along the radial direction of charcoal capsule outer layer;The intracapsular courage of charcoal is internally provided with three walls, disconnecting unit is provided with the intracapsular courage of charcoal, be provided at both ends with end barrier layer, wall and the end barrier layer of disconnecting unit will be separated into multiple activated carbon memory spaces inside the intracapsular courage of charcoal, active carbon particle is provided with each activated carbon memory space;Activated carbon charging port is provided with above corresponding each activated carbon memory space outside the intracapsular courage of charcoal, by setting multiple activated carbon memory spaces in the intracapsular courage of charcoal so that the active carbon particle inside the intracapsular courage of charcoal is evenly distributed, and lifts the clean-up effect of activated carbon capsule.
Description
Technical field
This application involves technical field of sewage purification, more particularly to a kind of activated carbon capsule.
Background technology
Activated carbon is black powder or bulk, graininess, cellular amorphous carbon, also there is the crystal of arranged regular
Carbon.In activated carbon in addition to carbon, also comprising two class admixtures:One kind is chemically combined element, mainly oxygen and hydrogen, these
Element is due to not carbonize and remained in charcoal completely, or in activation process, external non-carbon element and activated carbon surface
Chemical bond;Another kind of admixture is ash content, it is the inorganic part of activated carbon, and ash content easily causes secondary dirt in activated carbon
Dye.During activated carbon is due to stronger adsorptivity, being widely used in producing, living.
Activated carbon is placed in cloth bag by activated carbon capsule, realizes the product to the catharsis of water.Existing activated carbon capsule
Usually activated carbon is placed in the cloth bag of a pocket-like, then cloth bag can be put into related occasion purifies water.
However, existing activated carbon capsule is when in use, the easily somewhere aggregation inside cloth bag of internal activated carbon, causes
The activated carbon skewness in the intracapsular portion of activated carbon, influences the clean-up effect of activated carbon capsule.
Utility model content
The application provides a kind of activated carbon capsule, to solve the easily interior active carbon particle skewness of existing activated carbon capsule, leads
The problem of causing clean-up effect limited.
A kind of activated carbon capsule that the application provides, including charcoal capsule outer layer, the intracapsular courage of charcoal and active carbon particle;The charcoal capsule
In a ring, the charcoal capsule outer layer is internally formed ring cavity to outer layer;In a ring, the intracapsular courage of charcoal is arranged at the intracapsular courage of charcoal
Inside the charcoal capsule outer layer;The active carbon particle is arranged inside the intracapsular courage of the charcoal;It is provided with the charcoal capsule outer layer outer
Layer opening, the outer layer opening are set along the radial direction of the charcoal capsule outer layer;
Through hole is provided with the charcoal capsule outer layer in the both sides of the outer layer opening, every side of the outer layer opening is provided with
Two through holes, radial distribution of described two through holes along the charcoal capsule outer layer, fastening rope is provided with the through hole, described tight
Gu restrict through opposite two through hole of the outer layer opening both sides;
The intracapsular courage of charcoal is internally provided with three walls, and disconnecting unit, the disconnection are provided with the intracapsular courage of charcoal
Portion be provided at both ends with end barrier layer, the wall and the end barrier layer will be separated into inside the intracapsular courage of the charcoal it is more
A activated carbon memory space, is each provided with active carbon particle in the activated carbon memory space;
Activated carbon charging port is provided with above corresponding each activated carbon memory space outside the intracapsular courage of charcoal, it is described
Activated carbon charging port is set along the circumference of the intracapsular courage of the charcoal.
Optionally, the side of the activated carbon charging port is provided with fig leaf, the covering outside the intracapsular courage of the charcoal
The side of cloth towards the activated carbon charging port is provided with velcro sub-portion, in the activated carbon charging port outside the intracapsular courage of charcoal
Opposite side is provided with velcro mother portion, and the position of the velcro sub-portion is adapted with the position in the velcro mother portion.
Optionally, the fig leaf, the velcro sub-portion and the velcro mother portion are each along the intracapsular courage of the charcoal
Circumference set, the area of the fig leaf is more than the area of the activated carbon charging port.
Optionally, the velcro sub-portion and the velcro mother portion are strip.
Optionally, the velcro sub-portion and the velcro mother portion are around the side that the activated carbon charging port is set
Frame-shaped.
Optionally, the fig leaf edge is provided with the portion of pullling.
Optionally, the material of the charcoal capsule outer layer and the intracapsular courage of the charcoal is non-woven fabrics.
Optionally, the density of the charcoal capsule outer layer is less than the density of the intracapsular courage of the charcoal.
From above-described embodiment as can be seen that the application provide a kind of activated carbon capsule, including charcoal capsule outer layer, the intracapsular courage of charcoal with
And active carbon particle;In a ring, charcoal capsule outer layer is internally formed ring cavity to charcoal capsule outer layer;The intracapsular courage of charcoal in a ring, the intracapsular courage of charcoal
It is arranged inside charcoal capsule outer layer;Active carbon particle is arranged inside the intracapsular courage of charcoal;Outer layer opening, outer layer are provided with charcoal capsule outer layer
Opening is set along the radial direction of charcoal capsule outer layer;Be provided with through hole on charcoal capsule outer layer in the both sides of outer layer opening, outer layer opening it is every
Side is provided with two through holes, radial distribution of two through holes along charcoal capsule outer layer, is provided with fastening rope in through hole, fastening rope through
Opposite two through hole of outer layer opening both sides;The intracapsular courage of charcoal is internally provided with three walls, is provided with the intracapsular courage of charcoal disconnected
Open portion, disconnecting unit be provided at both ends with end barrier layer, wall and end barrier layer will be separated into inside the intracapsular courage of charcoal it is multiple
Activated carbon memory space, is provided with active carbon particle in each activated carbon memory space;Corresponding each activity outside the intracapsular courage of charcoal
Activated carbon charging port is provided with above charcoal memory space, activated carbon charging port is set along the circumference of the intracapsular courage of charcoal;By in charcoal capsule
Multiple activated carbon memory spaces are set in liner, and each activated carbon memory space is separately provided activated carbon charging port so that charcoal capsule
Active carbon particle inside liner is evenly distributed, and lifts the clean-up effect of activated carbon capsule.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of outside schematic diagram for activated carbon capsule that the application provides;
Fig. 2 is a kind of diagrammatic cross-section for activated carbon capsule that the application provides;
Fig. 3 is a kind of intracapsular courage schematic diagram of charcoal for activated carbon capsule that the application provides;
Fig. 4 is the close-up schematic view of the a-quadrant of Fig. 3;
Fig. 5 is the schematic diagram that a kind of activated carbon capsule that the application provides is applied to activated carbon sewage purification system.
Wherein, 100- charcoals capsule outer layer, the intracapsular courage of 200- charcoals, 300- active carbon particles, 101- outer layer openings, 102- through holes,
103- fastening ropes, 201- walls, 202- ends barrier layer, 203- fig leaves, 204- velcro sub-portions, 205- pull portion,
206- activated carbon charging port 207- velcro mothers portion, 1- water inlets, 2- inlet channels, the first filter chambers of 3-, 4- active carbon purifyings
Room, the second filter chambers of 5-, 6- outlet conduits, 7- water outlets, 21- pressure gauges, the first filter houses of 31-, 41- mesh screens, 42- chargings
Device, 43- detach device, 44- activated carbon capsules, 51- sealing rings, the second filter houses of 52-, 53- ultraviolet lamps, 61- throttle valves.
Embodiment
Please refer to Fig.1 to Fig.4, the utility model embodiment provides a kind of activated carbon capsule, including charcoal capsule outer layer 100, charcoal capsule
Liner 200 and active carbon particle 300;In a ring, charcoal capsule outer layer 100 is internally formed ring cavity to charcoal capsule outer layer 100;Charcoal is intracapsular
In a ring, the intracapsular courage 200 of charcoal is arranged inside charcoal capsule outer layer 100 courage 200;Active carbon particle 300 is arranged in the intracapsular courage 200 of charcoal
Portion;Outer layer opening 101 is provided with charcoal capsule outer layer 100, outer layer opening 101 is set along the radial direction of charcoal capsule outer layer 100;Charcoal capsule
Through hole 102 is provided with outer layer 100 in the both sides of outer layer opening 101, every side of outer layer opening 101 is provided with two through holes
102, radial distribution of two through holes 102 along charcoal capsule outer layer 100 is provided with fastening rope 103 in through hole 102, and fastening rope 103 is worn
Cross opposite two through hole 102 of 101 both sides of outer layer opening.
The intracapsular courage 200 of charcoal can be put into charcoal capsule outer layer 100 by outer layer opening 101, or be taken out out of charcoal capsule outer layer 100.
Fastening rope 103 can be fastened mutually, the intracapsular courage 200 of charcoal is fixed in charcoal capsule outer layer 100, charcoal capsule outer layer 100 and the intracapsular courage of charcoal
200 material is non-woven fabrics, and the density of charcoal capsule outer layer 100 is less than the density of the intracapsular courage 200 of charcoal.
Wherein, the intracapsular courage 200 of charcoal is internally provided with three walls 201, and disconnecting unit is provided with the intracapsular courage 200 of charcoal, breaks
Opening be provided at both ends with end barrier layer 202, wall 201 and the end barrier layer 202 in portion will be separated into inside the intracapsular courage 200 of charcoal
Multiple activated carbon memory spaces, are provided with active carbon particle in each activated carbon memory space, can avoid active carbon particle in charcoal
Somewhere is assembled in intracapsular courage 200, is caused active carbon particle skewness, is influenced local clean-up effect.
Specifically, it is provided with activated carbon charging port above the intracapsular corresponding each activated carbon memory space in the outside of courage 200 of charcoal
206, activated carbon charging port 206 is set along the circumference of the intracapsular courage 200 of charcoal.In activated carbon charging port 206 outside the intracapsular courage 200 of charcoal
Side be provided with fig leaf 203, the side of fig leaf 203 towards activated carbon charging port 206 is provided with velcro sub-portion 204,
Opposite side outside the intracapsular courage 200 of charcoal in activated carbon charging port 206 is provided with velcro mother portion 207, the position of velcro sub-portion 204
Put and be adapted with the position in velcro mother portion 207.
Wherein, activated carbon charging port 206 is used to be put into active carbon particle 300 into each activated carbon memory space, and can
It is combined by velcro mother portion 207 of the velcro sub-portion 204 on fig leaf 203 outside the intracapsular courage 200 of charcoal, by activated carbon
Charging port 206 seals.
In the present embodiment, fig leaf 203, velcro sub-portion 204 and velcro mother portion 207 are each along the intracapsular courage of charcoal
200 circumference is set, and the area of fig leaf 203 is more than the area of activated carbon charging port 206, to avoid active carbon particle 300 outside
Leakage.
Velcro sub-portion 204 and velcro mother portion 207 can be disposed as strip, in addition, velcro sub-portion 204 and magic
Patch mother portion 207 can also be disposed as the box shape set around activated carbon charging port 206, and compared with strip, leakproofness is stronger.
Further, 203 edge of fig leaf is provided with the portion of pullling 205, easy to the opening of fig leaf 203.
The activated carbon capsule of the utility model, available in active carbon purifying sewerage.
Referring to Fig. 5, a kind of structure diagram of the active carbon purifying sewerage provided for the application.
Active carbon purifying sewerage includes water inlet 1, inlet channel 2, the first filter chamber 3, active carbon purifying room 4, the
Two filter chambers 5, outlet conduit 6 and water outlet 7.
Wherein, described 2 one end of inlet channel is connected with the water inlet 1, and the other end is connected with first filter chamber 3;
Described 4 one end of active carbon purifying room connects first filter chamber 3, and the other end connects the second filter chamber 5;The outlet conduit 6
One end connects second filter chamber 5, other end connection water outlet 7;The water inlet 1, inlet channel 2, the first filter chamber 3,
Active carbon purifying room 4, the second filter chamber 5, outlet conduit 6 and water outlet 7 center point-blank;First filter chamber
3 are internally provided with the first filter house 31;The top of first filter chamber 3, institute are fixed in one end of first filter house 31
The other end for stating the first filter house 31 is fixed on the bottom of first filter chamber 3;If it is provided with the active carbon purifying room 4
Dry activated carbon capsule 44;The second filter house 52 is provided with second filter chamber 5.
Specifically, sewage enters inlet channel 2 by water inlet 1, and enters the first filter chamber 3 via inlet channel 2, the
The first filter house 31 set in one filter chamber 3 is the special grid of sewage disposal, it is widely used in sewage treatment field, can be with
Continuously intercept automatically and remove the special equipment for waste water treatment of variously-shaped debris in sewage, grid is by one or more groups of parallel gold
Belong to grizzly bar to form with frame, the grid grizzly bar section that the application uses so can effectively filter out dirt when in use for rectangle
Thick suspended matter in water, moreover it is possible to ensure velocity optimization when sewage passes through grid, grid rises in whole sewage purification system
To sewage is pre-processed, the effect of coarse filtration, and grid is dismantled cleaning and is also convenient in a device.
Enter active carbon purifying room 4 after the coarse filtration that sewage passes through the first filter house 31, the both ends of active carbon purifying room 4 are equal
It is provided with mesh screen 41.Mesh screen 41 is made of double-deck austenite stainless steel plate, can effectively prevent the corrosion of sewage, mesh screen 41 is right
Filtered again via the sewage after grid filtration, filter out medium-grain impurity, improve sewage cleanliness factor, be sewage into
Enter active carbon purifying room 4 to be ready.
Sewage formally enters active carbon purifying room 4, active carbon purifying room after the mesh screen 41 of active carbon purifying room one end
4 are distributed several activated carbon capsules 44.
Activated carbon is by the amorphous carbon obtained by working process, has very big specific surface area, to inorganic in sewage
Or organic substance has a good adsorption capacity, chemical property is stablized, and high mechanical strength is acidproof, alkaline-resisting, heat-resisting, it is not soluble in water with
Organic solvent, also renewable use.More than activated carbon 80-90% is made of carbon, this is also that activated carbon is inhaled as hydrophobicity
The reason for attached medium, in addition to carbon, also include two class admixtures, and one kind is chemically combined element, mainly oxygen and hydrogen,
These elements are remained in charcoal due to non-carbonization, or in activation process, external non-carbon element and activated carbon surface
Chemical bond, reaches purification purpose.
Active carbon purifying room 4 in the application is the core of whole system, has played irreplaceable effect.Using pure thing
The design of the cyclic structure for the activated carbon capsule 44 that the method for reason provides fine impurity adsorption cleaning in sewage, the application alleviates
The weight of activated carbon capsule 44, the buoyancy being subject in water also just reduce therewith, and the material of activated carbon capsule 44 is using highdensity
Non-woven fabrics makes, and highdensity nonwoven cloth material is homogeneous, is more advantageous to the infiltration and absorption of impurity in sewage, thin in sewage
Small impurity still can be tightly held by activated carbon by non-woven fabrics.
Further, the top of the active carbon purifying room 4 is provided with feed arrangement 42, the active carbon purifying room 4
Bottom, which is provided with, detaches device 43.The setting of feed arrangement 42 is the convenient capsule of replacement activated carbon in time 44, is active carbon purifying room 4
New material is constantly conveyed, device 43 periodically detaches and recycling had been used activated carbon capsule 44 likewise, detaching, and makes activity
High efficiency sewage purification state can be maintained in carbon purifying room 4 always.Sewage is behind active carbon purifying room 4 again by institute
Mesh screen 41 is stated to filter.Meanwhile 41 most important function of mesh screen is to prevent the activated carbon capsule 44 in active carbon purifying room 4 from entering water inlet
Pipeline 2 and outlet conduit 6, play the role of good partition.
Further, sewage enters the second filter chamber 5, and end is carried out via the second filter house 52 of setting in the second filter chamber 5
Pole is filtered, and the second filter house 52 can refine remaining more fine impurity in sewage, sewage is purified, and is ensured last net
Change quality.The top and bottom of second filter chamber 5 are symmetrically arranged with ultraviolet lamp 53.Distributed by ultraviolet lamp 53
The acute irradiation of ultraviolet realizes that wastewater disinfection is degerming.
Sewage flows through 6 junction of second filter chamber 5 and outlet conduit after the ultimate purification of the second filter chamber 5
Throttle valve 61, throttle valve 61 control purification after sewage flowing velocity, outlet conduit 6 and water outlet are entered with stable flow velocity
7.So that whole sewage purification process is smoothed out.
Further, the inlet channel 2, be both provided with pressure gauge 23 on the outlet conduit 6.For controlling water inlet pipe
Pressure in road 2 and outlet conduit 6.
The junction of 4 and second filter chamber 5 of active carbon purifying room is provided with sealing ring 51.The setting of sealing ring 51 carries
The high patency and security of junction.Prevent the connection of fine impurity blocking activities carbon purifying room 4 and the second filter chamber 5
Place.
From above-described embodiment as can be seen that sewage is in whole purification process, successively via water inlet 1, inlet channel 2,
One filter chamber 3, active carbon purifying room 4, the second filter chamber 5, outlet conduit 6 and water outlet 7, core are active carbon purifying room 4
Pure physical absorption, the activated carbon capsule 44 of cyclic structure is distributed with active carbon purifying room 4, activated carbon capsule 44 uses high density
Nonwoven cloth material makes, and utilizes the good adsorption capacity of activated carbon, chemical property stabilization, high mechanical strength, acidproof, alkaline-resisting, resistance to
Heat, the advantages of being used with organic solvent and regeneration not soluble in water, to create the absorption environment of non-toxic efficient, ensures purification process
Thoroughly, while the first filter chamber 3,41 and second filter chamber 5 of mesh screen at 4 both ends of active carbon purifying room are the auxiliary of whole purification process
Condition is helped, assists active carbon purifying room 4 to realize coarse filtration, purification and ultimate filtering etc., mesh screen can also prevent active carbon purifying room
Interior other regions of the outflow of activated carbon capsule 44;The feed arrangement 42 on 4 top of active carbon purifying room is arranged on, is arranged on bottom
Detach device 43 realize activated carbon capsule 44 into give recycling, the pressure gauge 21 being arranged on inlet channel 2 and outlet conduit 6,
Pressure in control pipeline, maintains stable circulation environment.Whole active carbon purifying sewerage device is simple and convenient, is handling
During simplify operation, reduce manually, the time, purification sewage it is thorough, purification result is safe and healthy, fully ensure sewage circulation
Use, meet the theme built a conservation-minded society.
From above technical scheme, a kind of activated carbon capsule of the application offer is multiple by being set in the intracapsular courage of charcoal
Activated carbon memory space, each activated carbon memory space are separately provided activated carbon charging port so that the activity inside the intracapsular courage of charcoal
Charcoal even particle distribution, lifts the clean-up effect of activated carbon capsule.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
New other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, the utility model
True scope and spirit are pointed out by following claim.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model only will by appended right
Ask to limit.
Claims (8)
1. a kind of activated carbon capsule, it is characterised in that including charcoal capsule outer layer (100), the intracapsular courage of charcoal (200) and active carbon particle
(300);
In a ring, the charcoal capsule outer layer (100) is internally formed ring cavity to the charcoal capsule outer layer (100);The intracapsular courage of charcoal
(200) in a ring, it is internal to be arranged at the charcoal capsule outer layer (100) for the intracapsular courage of the charcoal (200);The active carbon particle (300)
It is internal to be arranged at the intracapsular courage of the charcoal (200);Outer layer opening (101) is provided with the charcoal capsule outer layer (100), the outer layer is opened
Mouth (101) is set along the radial direction of the charcoal capsule outer layer (100);
The both sides of the outer layer opening (101) are provided with through hole (102), the outer layer opening on the charcoal capsule outer layer (100)
(101) every side is provided with two through holes (102), radial direction point of described two through holes (102) along the charcoal capsule outer layer (100)
Cloth, the through hole (102) is interior to be provided with fastening rope (103), and the fastening rope (103) passes through outer layer opening (101) both sides
Opposite two through hole (102);
The intracapsular courage of charcoal (200) is internally provided with three walls (201), and disconnection is provided with the intracapsular courage of charcoal (200)
Portion, the disconnecting unit are provided at both ends with end barrier layer (202), the wall (201) and the end barrier layer (202)
Multiple activated carbon memory spaces will be separated into inside the intracapsular courage of the charcoal (200), be set in each activated carbon memory space
Active charcoal particle;
Outside the intracapsular courage of charcoal (200) activated carbon charging port is provided with above corresponding each activated carbon memory space
(206), the activated carbon charging port (206) is set along the circumference of the intracapsular courage of the charcoal (200).
2. a kind of activated carbon capsule according to claim 1, it is characterised in that the intracapsular courage of charcoal (200) is exterior described
The side of activated carbon charging port (206) is provided with fig leaf (203), and the fig leaf (203) is towards the activated carbon charging port
(206) side is provided with velcro sub-portion (204), and the intracapsular courage of charcoal (200) is exterior in the another of the activated carbon charging port (206)
Side is provided with velcro mother portion (207), the position of the velcro sub-portion (204) and the position of the velcro mother portion (207)
Put and be adapted.
3. a kind of activated carbon capsule according to claim 2, it is characterised in that the fig leaf (203), the magic notice
Portion (204) and the velcro mother portion (207) are set each along the circumference of the intracapsular courage of the charcoal (200), the fig leaf
(203) area is more than the area of the activated carbon charging port (206).
4. a kind of activated carbon capsule according to claim 3, it is characterised in that the velcro sub-portion (204) and the evil spirit
Art patch mother portion (207) is strip.
5. a kind of activated carbon capsule according to claim 3, it is characterised in that the velcro sub-portion (204) and the evil spirit
Art patch mother portion (207) is the box shape set around the activated carbon charging port (206).
6. a kind of activated carbon capsule according to claim 3, it is characterised in that fig leaf (203) edge is provided with drawing
Pull portion (205).
7. a kind of activated carbon capsule according to claim 1, it is characterised in that the charcoal capsule outer layer (100) and the charcoal capsule
The material of liner (200) is non-woven fabrics.
8. a kind of activated carbon capsule according to claim 7, it is characterised in that the density of the charcoal capsule outer layer (100) is less than
The density of the intracapsular courage of charcoal (200).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721258886.5U CN207347213U (en) | 2017-09-28 | 2017-09-28 | A kind of activated carbon capsule |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721258886.5U CN207347213U (en) | 2017-09-28 | 2017-09-28 | A kind of activated carbon capsule |
Publications (1)
Publication Number | Publication Date |
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CN207347213U true CN207347213U (en) | 2018-05-11 |
Family
ID=62356862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201721258886.5U Expired - Fee Related CN207347213U (en) | 2017-09-28 | 2017-09-28 | A kind of activated carbon capsule |
Country Status (1)
Country | Link |
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CN (1) | CN207347213U (en) |
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2017
- 2017-09-28 CN CN201721258886.5U patent/CN207347213U/en not_active Expired - Fee Related
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Granted publication date: 20180511 Termination date: 20210928 |