CN204356575U - A kind of firework paper using paper making wastewater zero discharge reclamation set - Google Patents
A kind of firework paper using paper making wastewater zero discharge reclamation set Download PDFInfo
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- CN204356575U CN204356575U CN201420775884.3U CN201420775884U CN204356575U CN 204356575 U CN204356575 U CN 204356575U CN 201420775884 U CN201420775884 U CN 201420775884U CN 204356575 U CN204356575 U CN 204356575U
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Abstract
A kind of firework paper using paper making wastewater zero discharge reclamation set.The outlet of waste water transfer member (1) communicates with pulper; The outlet of screening wastewater disposal basin (2) is communicated with described waste water transfer member, and the outlet of sheet forming wastewater disposal basin (3) is communicated with described waste water transfer member; The outlet of squeezing wastewater disposal basin (4) is communicated with described waste water transfer member; Described sheet forming wastewater disposal basin is provided with the first wastewater outlet providing dilution water (5) to pulp dilution pond, described first wastewater outlet is positioned at the bottom of sheet forming wastewater disposal basin sidewall, and communicate with bottom, pulp dilution pond, another side wall upper part of sheet forming wastewater disposal basin is provided with can start to control to paper pulp liquid level in pulp dilution pond the outlet made; Be provided with paper pulp grit catcher (6), pulping waste water is communicated with pulper by the wastewater outlet of paper pulp grit catcher.There is the sand grains can effectively removed after pulping in paper pulp, improve desanding waste water recycling quality, and the feature such as structure is more rational and practical.
Description
Technical field
The utility model relates to the Zero-discharge reuse device of paper waste, specifically waste paper or sole plales produce a paper making wastewater zero discharge reclamation set for the paper usings such as firework, firecrackers and lead-in wire, are also applicable to the Zero-discharge reuse producing the paper wastes such as corrugated paper, yellow plate paper, brown paper.
Background technology
Utilize paper to give up or sole plales produces the paper waste of the paper using such as firework, firecrackers and lead-in wire, comprise pulping waste water, pulp sifting waste water, sheet forming waste water, page squeezing waste water, also has the cleaning waste water of cleaning woollen blanket.
The patent No. is that the patent document of ZL201310030262.8 has announced a kind of " waste paper or sole plales paper making wastewater zero discharge reclamation set ", and " device " should comprise total wastewater disposal basin and waste water transfer member, the outlet of waste water transfer member communicates with total wastewater disposal basin; Be provided with pulping wastewater disposal basin, the outlet of pulping wastewater disposal basin is communicated with described waste water transfer member; Be provided with screening wastewater disposal basin, the outlet of screening wastewater disposal basin is communicated with described waste water transfer member; Be provided with sheet forming wastewater disposal basin, the outlet of sheet forming wastewater disposal basin is communicated with described waste water transfer member; Be provided with squeezing wastewater disposal basin, the outlet of squeezing wastewater disposal basin is communicated with described waste water transfer member, and woollen blanket cleaning waste water can be communicated with described waste water transfer member, also can be incorporated to squeezing wastewater disposal basin; Be provided with the first waste water recycling pump, the water inlet of the first waste water recycling pump is communicated with total wastewater disposal basin, and delivery port connects reuse water-supply-pipe, and reuse water-supply-pipe is communicated with pulper and realizes waste water recycling; The whole waste water produced in paper-making process from waste paper can be carried out reuse by this device, realize wastewater zero discharge, avoid producing environment polluting.But not enough to some extent to the sand grains removal effect in the paper pulp after pulping, affect the reuse quality of desanding waste water.
Summary of the invention
The utility model improves and structure optimization prior art, a kind of firework paper using paper making wastewater zero discharge reclamation set is proposed, effectively can remove the sand grains in paper pulp after pulping, improve desanding waste water recycling quality, be conducive to the zero-emission and the fully recovering that promote the paper using such as firework and firecrackers paper waste, and structure is more rational and practical.
Technical solutions of the utility model ginseng comprises:
Waste water transfer member, the outlet of waste water transfer member is communicated with pulper;
Screening wastewater disposal basin, the outlet of screening wastewater disposal basin is communicated with described waste water transfer member;
Sheet forming wastewater disposal basin, the outlet of sheet forming wastewater disposal basin is communicated with described waste water transfer member;
Squeezing wastewater disposal basin, the outlet of squeezing wastewater disposal basin is communicated with described waste water transfer member;
Be provided with paper pulp grit catcher, pulping waste water is communicated with pulper by the wastewater outlet of paper pulp grit catcher.
Namely pulping waste water, screening waste water, sheet forming waste water, squeezing waste water and woollen blanket cleaning waste water direct reuse are in pulper.
Further:
Described paper pulp grit catcher comprises inferior pyramidal housing, and inferior pyramidal housing upper is provided with the pulp-inlet pipe of tangential admission, and there is pulp outlet on top, and there is sand export lower end;
The sand export of described inferior pyramidal housing lower end connects auxiliary inferior pyramidal housing, described sand export communicates with the inner chamber of auxiliary inferior pyramidal housing, there is sand removing hole auxiliary inferior pyramidal housing lower end, and the sectional area of sand removing hole is less than the sectional area of described inferior pyramidal housing lower end sand export.
The below of the sand removing hole of described auxiliary inferior pyramidal housing lower end is provided with and stores sand launder, stores sand launder and is provided with wastewater outlet, and namely pulping waste water is communicated with pulper by the sand launder wastewater outlet that stores of paper pulp grit catcher.
The operation principle of described paper pulp grit catcher is, paper pulp after pulping tangentially enters inferior pyramidal housing cavity top by pulp-inlet pipe, eddy flow is formed in inferior pyramidal housing cavity, paper pulp is produced with sand grains be separated, sand grains after separation falls within auxiliary inferior pyramidal housing because of gravity, sectional area due to auxiliary inferior pyramidal housing lower end sand removing hole is less than the sectional area of inferior pyramidal housing lower end sand export, namely the technical measures of changes in flow rate are adopted, make to enter the sand grains in auxiliary inferior pyramidal housing and a small amount of or part pulp mixture generation delay, and under the cyclonic action formed in the described inferior pyramidal housing effect of exerting oneself, be stranded in sand grains in auxiliary inferior pyramidal housing and pulp mixture namely in eddy flow state, in the delay process of eddy flow state, secondary separation is realized to the sand grains entered in auxiliary inferior pyramidal housing and a small amount of or part paper pulp, namely paper pulp after secondary separation rise and to mix with the paper pulp of first separation, discharged by the pulp outlet of inferior pyramidal housing tip and enter the subsequent processing of production process, namely sand grains after separation and waste water are fallen into by the sand removing hole discharge of auxiliary inferior pyramidal housing lower end and store sand launder, thus improve the separating effect of paper pulp and sand grains and improve the reuse quality of paper pulp sand-removing waste water, be conducive to the reuse of paper pulp sand-removing waste water, and meet the requirement of paper pulp sand-removing waste water recycling.
In the utility model operation process, to the raw material before entering pulper, through artificial fine selection, all kinds of visible foreign material not of uniform size in effective removal raw material, the utility model requires based on the papery of the similar paper usings such as firework the feature being different from writing paper, in waste water recycling process, the sediment in each wastewater disposal basin and suspended matter in production, all meet the requirement of producing the similar paper using such as firework and firecrackers with waste water recycling direct reuse.The utility model, in the sheet paper products of inner actual production, has been applied to the production such as firecrackers, firework, meets the requirement of production and product serviceability.
Technique effect of the present utility model is:
1, because the outlet of waste water transfer member communicates with pulper, the screening waste water produced in production process, sheet forming waste water, squeezing waste water and woollen blanket cleaning waste water namely by waste water transfer member direct reuse in pulper, and pulping waste water by the wastewater outlet direct reuse of desander in pulper, not only simplify system architecture, and structure is more rational and practical.
2, outlet due to the inferior pyramidal housing lower end of described paper pulp grit catcher connects auxiliary inferior pyramidal housing, and the sectional area of auxiliary inferior pyramidal housing lower end sand removing hole is less than the sectional area of inferior pyramidal housing lower end sand export, namely the technical measures of changes in flow rate are adopted, make to enter the sand grains in auxiliary inferior pyramidal housing and pulp mixture generation delay, and in eddy flow state under the cyclonic action formed in the described inferior pyramidal housing effect of exerting oneself, the sand grains entered in auxiliary inferior pyramidal housing is made to realize secondary separation with a small amount of or part paper pulp, thus improve the separating effect of paper pulp and sand grains and improve the reuse quality of paper pulp sand-removing waste water, meet the reuse requirement of paper pulp sand-removing waste water.
The other technologies effect that the utility model has will further describe in a specific embodiment.
Accompanying drawing explanation
Fig. 1 is scenario-frame schematic diagram of the present utility model, determines that this figure is Figure of abstract;
Fig. 2 is the structural representation of a kind of embodiment of the utility model;
The facade structures schematic diagram that Fig. 3 is the wastewater disposal basin of sheet forming shown in Fig. 1 and pulp dilution pond, illustrates the connectivity structure in sheet forming wastewater disposal basin and pulp dilution pond;
Fig. 4 is that the facade structures of pulper and paper pulp grit catcher is illustrated;
Fig. 5 is the structural representation of paper pulp grit catcher.
Detailed description of the invention
See Fig. 1, Fig. 2.The utility model comprises:
Waste water transfer member 1, the outlet of waste water transfer member 1 communicates with pulper;
Screening wastewater disposal basin 2, the outlet of screening wastewater disposal basin is communicated with described waste water transfer member 1;
Sheet forming wastewater disposal basin 3, the outlet of sheet forming wastewater disposal basin is communicated with described waste water transfer member 1;
Squeezing wastewater disposal basin 4, the outlet of squeezing wastewater disposal basin is communicated with described waste water transfer member 1;
Arrange paper pulp grit catcher 6, pulping waste water is communicated with pulper by the wastewater outlet of paper pulp grit catcher 6.
The cleaning waste water of woollen blanket 7 enters squeezing wastewater disposal basin 4, as shown in Figure 1 and Figure 2, also enters waste water transfer member 1 by transfer member; Be provided with cleaning water pipe 8, when needing, cleaning water pipe 8 provides clear water to clean woollen blanket 7, plays the supplementary water needed for production process simultaneously.
Fig. 4 illustrates the facade schematic construction of pulper and paper pulp grit catcher, pulper is low level setting relative to waste water transfer member 1, be illustrated as the vertical pulper be located in melt pit, pulper also can be the Horizontal pulper that low level is arranged, this version is convenient in pulper, add paper making raw material from ground, and make waste water enter in pulper realize reuse with the state of gravity flow, make the structure of wastewater recycling device more reasonable and applicable; In pulper, paper pulp and pulping waste water deliver to the pulp-inlet pipe of paper pulp grit catcher by delivery pump.
Fig. 5 is the structural representation of paper pulp grit catcher.
Described paper pulp grit catcher 6 comprises inferior pyramidal housing 9, and inferior pyramidal housing 9 top is provided with the pulp-inlet pipe 10 of tangential admission, and there is pulp outlet 11 on top, and there is sand export 12 lower end; The sand export 12 of inferior pyramidal housing 9 lower end connects auxiliary inferior pyramidal housing 13, described sand export 12 communicates with the inner chamber of auxiliary inferior pyramidal housing, there is sand removing hole 14 auxiliary inferior pyramidal housing 13 lower end, and the sectional area of described sand removing hole 14 is less than the sectional area of inferior pyramidal housing lower end sand export 12.The below of the sand removing hole 14 of described auxiliary inferior pyramidal housing lower end is provided with and stores sand launder 15, stores sand launder 15 and is provided with wastewater outlet 16, and namely pulping waste water is communicated with pulper by the sand launder wastewater outlet that stores of described paper pulp grit catcher 6.In enforcement, inferior pyramidal housing 9 is supported by column 9a.In addition, described inferior pyramidal housing 9 upper end can connect cylindrical sections, and namely described pulp-inlet pipe 10 is tangentially connected with the cylindrical sections of inferior pyramidal housing upper end, as shown in Figure 5.Described inferior pyramidal housing 9 also can be overall inferior pyramidal housing, and namely pulp-inlet pipe 10 is tangentially connected with the conical section of inferior pyramidal housing upper.
The back cut diameter (sectional area) of described auxiliary inferior pyramidal housing 13 is greater than the diameter (sectional area) of inferior pyramidal housing 9 lower end sand export 12, the sand grains being beneficial to be discharged by sand export 12 can enter in auxiliary inferior pyramidal housing 13 with a small amount of or part pulp mixture swimmingly, make the inner chamber of auxiliary inferior pyramidal housing 13 have relative capacity simultaneously, and suitably can reduce the height of auxiliary inferior pyramidal housing 13, be conducive to the whole height reducing paper pulp grit catcher, reduce requisite space.In enforcement, the auxiliary back cut diameter (sectional area) of inferior pyramidal housing 13 is unsuitable excessive with the difference of the diameter (sectional area) of inferior pyramidal housing lower end sand export 12, is beneficial to the paper pulp after secondary separation and rises.
Described inferior pyramidal housing 9 and auxiliary inferior pyramidal housing 13 are lower conical structure.
Through test application, the sectional area of auxiliary inferior pyramidal housing 13 lower end sand removing hole 14 is while the sectional area being less than inferior pyramidal housing 9 lower end sand export 12, the diameter (sectional area) of auxiliary inferior pyramidal housing lower end sand removing hole 14 is relevant to the sand grains in pulp density and paper pulp, the diameter of auxiliary inferior pyramidal housing lower end sand removing hole 14 is preferably 15-40 millimeter, namely the diameter (sectional area) of inferior pyramidal housing lower end sand removing hole 6 can be determined according to pulp density and sand grains size, as pulp density is high, when grit particles is less, the diameter of sand removing hole 14 should get smaller value, namely the mixture of sand grains and paper pulp holdup time in auxiliary inferior pyramidal housing 13 chamber is slightly long, there is time enough realize paper pulp and sand grains secondary separation, otherwise as low in pulp density and sand grains is more appropriate to the occasion gets larger value, is separated because paper pulp and sand grains are easier to realization, i.e. the holdup time can be slightly short in auxiliary inferior pyramidal housing 13 chamber for the mixture of sand grains and paper pulp, as: the diameter of inferior pyramidal housing lower end sand export 12 is 80 millimeters, paper pulp be intermediate concentration, grit particles moderate time, the diameter of auxiliary inferior pyramidal housing 13 lower end sand removing hole 14 is preferably 20 millimeters.Through the desanding effect contrast test of medium consistency pulp, still containing obvious paper pulp in the sand grains that existing desander is discharged, and be difficult to see obvious paper pulp in the sand grains that paper pulp grit catcher of the present utility model is discharged, namely improve the separating effect of paper pulp and sand grains and improve the quality of waste water recycling, meeting the reuse requirement of waste water.
Fig. 3 illustrates the facade structures schematic diagram in sheet forming wastewater disposal basin 3 and pulp dilution pond 5, described sheet forming wastewater disposal basin 3 is provided with the first wastewater outlet 3a providing dilution water to pulp dilution pond 5, first wastewater outlet 3a is positioned at the bottom of sheet forming wastewater disposal basin 3 one sidewall, communicate with the bottom in pulp dilution pond 5, another side wall upper part of sheet forming wastewater disposal basin is provided with can start to control to paper pulp liquid level in pulp dilution pond 5 the outlet 3b made, outlet 3b is positioned at the suitable height on sidewall, by determining the volume in pulp dilution pond 5 and the wastewater flow rate of required reuse, when the pulp density in pulp dilution pond 5 higher than produce needed for concentration time then paper pulp liquid level be relatively in place's low-end trim, waste water in sheet forming wastewater disposal basin 3 then automatically enters 5 pairs, pulp dilution pond paper pulp by the first wastewater outlet 3a and dilutes, when the concentration of paper pulp meets the concentration needed for production, namely paper pulp liquid level in pulp dilution pond 5 is in a set high position, described first wastewater outlet 3a then stops intaking to pulp dilution pond 5 automatically, waste water in sheet forming wastewater disposal basin 3 then flows into waste water transfer member 1 by outlet 3b, namely the outlet 3b of described sheet forming wastewater disposal basin 3 side wall upper part plays control action to the paper pulp liquid level (pulp density) in pulp dilution pond 5, thus pulp density automatically adjusted and control, with the quality of the concentration and stable paper that are conducive to stable paper pulp.
In addition, auxiliary waste water is set and stores pond 17 and waste water connectedness 18, see Fig. 2, one end of waste water connectedness 18 is communicated with waste water transfer member 1, the other end and auxiliary waste water store pond 17 and communicate, waste water connectedness 18 is provided with the first stop valve 18a, and the segment of waste water transfer member 1 outlet section arranges the second stop valve 19; Be provided with delivery pump 20, entrance point and the auxiliary waste water of delivery pump 20 store pond 17 and are communicated with, and the port of export connecting conveying pipe 21 of delivery pump 20, the other end of carrier pipe 21 is communicated with pulper.Be provided with aerator 22, aerator 22 comprises gas generator 22a and is positioned at the aeration component 22b that auxiliary waste water stores pond 17, aeration component 22b preferably adopts pipe, and be provided with some solarization air caps, gas generator 22a preferably adopts Roots blower, by aeration operation, the sediment that auxiliary waste water is stored in pond 17 suspends more uniformly, and the sediment stored in pond 17 to be conducive to auxiliary waste water is back to pulper with reuse waste water.It is that low level is arranged that auxiliary waste water stores pond 17 relative to waste water transfer member, makes waste water enter auxiliary waste water with the state of gravity flow and stores in pond 17.
Under normal production scenarios, the first stop valve 18a on waste water connectedness 18 is in cut-off state, and the second stop valve 19 is opening, the waste water of each wastewater disposal basin then direct reuse in pulper, with background technology ratio, the operation of aerator 22 can be reduced, save energy consumption.The Main Function that auxiliary waste water stores pond 17 is, when carrying out each production equipment and the cleaning such as wastewater disposal basin and waste water transfer member when stopping producing, namely open the first stop valve 18a and close the second stop valve 19, allow the waste water of described cleaning enter auxiliary waste water and store transition storage in pond 17, described auxiliary waste water store pond 17 to arrange capacity little, can occupied ground be reduced.When producing, being about to auxiliary waste water and storing waste water recycling in pond 17 in pulper.
The set-up mode of the described each wastewater disposal basin in the utility model is not unique, and according to production equipment deployment scenarios, in described screening wastewater disposal basin 2, sheet forming wastewater disposal basin 3, squeezing wastewater disposal basin 4, two adjacent wastewater disposal basins can merge into one.
The utility model is during normal operation, and waste water is in normal flow regime, and according to the principle of " Running water never becomes putrid ", waste water is not easy to produce different gas, if desired can spray deodorant.When long period (more than two days or three days) are stagnated in operation, should to spray deodorant in wastewater disposal basin, deodorant can adopt existing deodorant, also can adopt with the disinfectant of 70% and 30% air freshener after high uniformity, new water is added in the ratio of 1:300, spray in wastewater disposal basin, stir if desired.
Various enforcement structure described by the utility model detailed description of the invention and any distressed structure on technical solutions of the utility model basis all belong to scope of the present utility model.
Claims (10)
1. a firework paper using paper making wastewater zero discharge reclamation set, is characterized in that:
Be provided with waste water transfer member, the outlet of waste water transfer member communicates with pulper;
Be provided with screening wastewater disposal basin, the outlet of screening wastewater disposal basin is communicated with described waste water transfer member;
Be provided with sheet forming wastewater disposal basin, the outlet of sheet forming wastewater disposal basin is communicated with described waste water transfer member;
Be provided with squeezing wastewater disposal basin, the outlet of squeezing wastewater disposal basin is communicated with described waste water transfer member;
Be provided with paper pulp grit catcher, pulping waste water is communicated with pulper by the wastewater outlet of paper pulp grit catcher.
2. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 1, it is characterized in that: described paper pulp grit catcher (6) comprises inferior pyramidal housing (9), inferior pyramidal housing (9) top is provided with the pulp-inlet pipe (10) of tangential admission, there is pulp outlet (11) on top, there is sand export (12) lower end, the sand export (12) of inferior pyramidal housing (9) lower end connects auxiliary inferior pyramidal housing (13), described sand export (12) communicates with the inner chamber of auxiliary inferior pyramidal housing, there is sand removing hole (14) auxiliary inferior pyramidal housing (13) lower end, the sectional area of sand removing hole (14) is less than the sectional area of inferior pyramidal housing lower end sand export (12),
The below of the sand removing hole (14) of described auxiliary inferior pyramidal housing lower end is provided with and stores sand launder (15), stores sand launder (15) and is provided with wastewater outlet (16), and namely pulping waste water is communicated with pulper by the sand launder wastewater outlet (16) that stores of described paper pulp grit catcher (6).
3. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 2, it is characterized in that: the diameter of the sand removing hole (14) of described auxiliary inferior pyramidal housing lower end is 15-40 millimeter.
4. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 2, it is characterized in that: the back cut diameter of auxiliary inferior pyramidal housing (13) is greater than the diameter of inferior pyramidal housing (9) lower end sand export (12).
5. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 2, it is characterized in that: the upper end of inferior pyramidal housing (9) connects cylindrical sections, and described pulp-inlet pipe (10) is namely tangentially connected with the cylindrical sections of inferior pyramidal housing upper end.
6. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 2, it is characterized in that: inferior pyramidal housing (9) is overall inferior pyramidal housing, and described pulp-inlet pipe (10) is namely tangentially connected with the conical section of inferior pyramidal housing upper.
7. according to claim 2-6 any described in a kind of firework paper using paper making wastewater zero discharge reclamation set, it is characterized in that: inferior pyramidal housing (9) and auxiliary inferior pyramidal housing (13) are lower conical structure.
8. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 1, it is characterized in that: described sheet forming wastewater disposal basin (3) is provided with the first wastewater outlet (3a) providing dilution water to pulp dilution pond (5), first wastewater outlet (3a) is positioned at the bottom of sheet forming wastewater disposal basin (3) sidewall, communicate with the bottom of pulp dilution pond (5), another side wall upper part of sheet forming wastewater disposal basin is provided with can start to control to pulp dilution pond (5) interior paper pulp liquid level the outlet (3b) made.
9., according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 1, it is characterized in that:
Be provided with auxiliary waste water and store pond (17) and waste water connectedness (18), one end of waste water connectedness (18) is communicated with waste water transfer member (1), and the other end and auxiliary waste water store pond (17) and communicates, and waste water connectedness (18) is provided with the first stop valve (18a);
Be provided with delivery pump (20), entrance point and the auxiliary waste water of delivery pump (20) store pond (17) and are communicated with, the port of export connecting conveying pipe (21) of delivery pump (20), and carrier pipe (21) other end is communicated with pulper;
The segment of described waste water transfer member (1) outlet section arranges the second stop valve (19);
Be provided with aerator (22), aerator (22) comprises gas generator (22a) and is positioned at the aeration component (22b) that auxiliary waste water stores pond (17), and aeration component (22b) is provided with some solarization air caps.
10. according to a kind of firework paper using paper making wastewater zero discharge reclamation set according to claim 1, it is characterized in that: in described screening wastewater disposal basin, sheet forming wastewater disposal basin, squeezing wastewater disposal basin, two adjacent wastewater disposal basins can merge into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775884.3U CN204356575U (en) | 2014-12-11 | 2014-12-11 | A kind of firework paper using paper making wastewater zero discharge reclamation set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775884.3U CN204356575U (en) | 2014-12-11 | 2014-12-11 | A kind of firework paper using paper making wastewater zero discharge reclamation set |
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| Publication Number | Publication Date |
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| CN204356575U true CN204356575U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420775884.3U Withdrawn - After Issue CN204356575U (en) | 2014-12-11 | 2014-12-11 | A kind of firework paper using paper making wastewater zero discharge reclamation set |
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| CN (1) | CN204356575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480765A (en) * | 2014-12-11 | 2015-04-01 | 钟立福 | Zero-emission reusing device for paper-making wastewater for fireworks paper |
-
2014
- 2014-12-11 CN CN201420775884.3U patent/CN204356575U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480765A (en) * | 2014-12-11 | 2015-04-01 | 钟立福 | Zero-emission reusing device for paper-making wastewater for fireworks paper |
| CN104480765B (en) * | 2014-12-11 | 2017-04-26 | 钟立福 | Zero-emission reusing device for paper-making wastewater for fireworks paper |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20171114 |