CN204034360U - Fill rinsing type ore pulp filter press - Google Patents
Fill rinsing type ore pulp filter press Download PDFInfo
- Publication number
- CN204034360U CN204034360U CN201420558290.7U CN201420558290U CN204034360U CN 204034360 U CN204034360 U CN 204034360U CN 201420558290 U CN201420558290 U CN 201420558290U CN 204034360 U CN204034360 U CN 204034360U
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Abstract
The utility model discloses a kind of filling rinsing type ore pulp filter press, comprise filter press, wherein stir chemical combination bucket, bucket with slurry and storage tank are all connected filter press with filter pressing pump ore pulp import through valve; Common water nozzle and magnetic dynamic control water nozzle are installed in filter press plate interval, and magnetic moves the hickey controlling water nozzle and realizes the connection with filter press plate, and swivel nut is convenient to valve rod and is moved up and down flexibly, and valve rod is by the closedown of magneticaction band movable valve plug or open fluid course; Magnetic dynamic control is provided with magnetic stripe substrate near water nozzle, and magnetic stripe substrate is provided with magnet, and magnetic stripe substrate connects motor-operating mechanism, and motor-operating mechanism realizes magnet and is toward or away from magnetic dynamic control water nozzle.The convenient recovery achieving valuable constituent in slag filter cake of the utility model, the rate of recovery reaches more than 90%, can significantly energy-saving and emission-reduction, improves yield; It is ingenious that magnetic moves valve simplicity of design, greatly reduces labour intensity, improves the security of operation, and magnetic to move valve more simple and reliable than electromagnetic valve structure, easy to use.
Description
Technical field
The utility model relates to a kind of ore pulp filter press, specifically refers to fill rinsing type ore pulp filter press.
Background technology
Hydrometallurgy is the processing and utilization mode of carrying out lixiviate after ore being broken into powder, and the ore pulp after lixiviate needs to carry out press filtration, and thus filter press carries out the very important equipment of Separation of Solid and Liquid in hydrometallurgy process.In hydrometallurgical processes, be all generally relatively large filter press hydraulic compression, carry out hydraulic pressure expansion deckle board inner septum after having filtered, realize extruding of expanding, content liquid in filter residue is reduced as far as possible, reduce the loss of solubility valuable constituent.
But the liquid still containing about 30% in the ore pulp filter residue of overexpansion extruding, the water-soluble valuable constituent (metal ion) that residual liquid contains not only can make the yield of hydrometallurgy reduce, if discharge also can serious environment pollution.Owing to needing the ore pulp amount of carrying out press filtration very large in hydrometallurgical processes, thus reclaim the valuable constituent composition (mainly water miscible metal ion) of residual liquid in ore pulp filter residue, just can significantly energy-saving and emission-reduction.
But existing ore pulp filter press does not all have to solve this technical problem more easily, although filter residue can blow more dry with air by the filter press of some field of food, but need the artificial water nozzle of turning on or closing on filter press plate one by one in air-blowing process, very loaded down with trivial details, the workload of workman is very large, particularly during ore pulp press filtration, because filtration yield is huge, general have up to a hundred taps, and ore pulp is mostly through soda acid process, have corrosivity and toxicity, thus manual operation not only bothers, also very dangerous.
And still remain the liquid of about 20% with the filter cake after air blow drying, therefore, existing filter press can not meet the requirement of people for ore pulp press filtration, needs the feature for ore pulp, improves.
Utility model content
The technical problems to be solved in the utility model overcomes the deficiencies in the prior art exactly, for the feature of ore pulp, provide a kind of filling rinsing type ore pulp filter press that conveniently can reclaim the valuable constituent (mainly water miscible metal ion) of residual liquid in ore pulp filter cake.The slurries that the design uses clean slag and water to be formed and clear water carry out displacement to slag filter cake and penetrate, and valuable constituent in filter cake (mainly metal ion) are almost all washed out and reclaim, and improve yield and significantly energy-saving and emission-reduction.
For overcoming the deficiencies in the prior art, the utility model takes following technical scheme:
A kind of filling rinsing type ore pulp filter press, comprise the filter press be made up of ore pulp import, filter press plate, hydraulic power unit and hydraulic jack, it is characterized in that: by stirring motor, reductor, the stirring chemical combination bucket that mixer base, shaft and stirring vane form is connected ore pulp import through chemical combination outlet valve with filter pressing pump; The bucket with slurry be made up of motor with slurry and reductor, shaft with slurry, stirring vane with slurry and pump with slurry is connected ore pulp import through outlet valve with slurry and filter pressing pump; Storage tank is connected ore pulp import through outlet valve with filter pressing pump; Common water nozzle and magnetic dynamic control water nozzle are installed in filter press plate interval, the dynamic water nozzle that controls of magnetic comprises plastic jacket, steel disk, lock nut, swivel nut, valve rod, valve body, hickey, drain pipe, spool and plug screw, hickey realizes the connection with filter press plate, swivel nut plays effect of contraction to valve rod and is convenient to valve rod and moves up and down flexibly, when steel disk moves upward by magneticaction, valve seat upwards can be coordinated to close fluid course by valve rod band movable valve plug, when magnetic force is removed, spool can free-falling under gravity, makes valve opening; Magnetic dynamic control is provided with magnetic stripe substrate near water nozzle, and magnetic stripe substrate is provided with magnet, and magnetic stripe substrate connects motor-operating mechanism, and motor-operating mechanism realizes magnet and is toward or away from magnetic dynamic control water nozzle.Namely magnetic field is near closing water nozzle, and magnetic field is left and just opened water nozzle, realizes Magnetic Control water nozzle switch.
Described motor-operating mechanism drives pinion to rotate, pinion engages with gear wheel, gear wheel and magnetic substrate connect as one, when gear wheel drives magnet close to spool, spool is attracted to mention closedown water nozzle, when gear wheel drives magnet away from spool, spool departs from magnetic influence, and water nozzle is opened in free-falling under gravity.
During press filtration operation, carry the ore pulp stirred in chemical combination bucket to enter filling rinsing type filter press by filter pressing pump and carry out press filtration, the common water nozzle that filtrate is installed by interval and the dynamic water nozzle that controls of magnetic are discharged, to a certain degree explanation filtration end is reduced to when going out flow quantity, now close chemical combination outlet valve, open outlet valve with slurry, the slurries that slag clean in bucket with slurry and water are formed are conveyed into filter press by filter pressing pump, before hydraulic pressure is extracted, carry out this step operate the liquid stream runner that press filtration can be utilized to be formed and realize displacement and washing to the water-soluble valuable constituent (mainly metal ion) in filter cake, the ore pulp simultaneously allocated into fully can fill up filter press, avoid because in filter press plate, space is larger, the excessive compression that barrier film hydraulic expansion causes barrier film deckle board and expansion damage.
Bucket with slurry drops into the press filtration slag cleaned, add water to appropriate, open pump with slurry and slag is smashed refinement, bucket bottom with slurry cone structure can make into lump ore slag and concentrate on cone bucket bottom, pump with slurry sucks top ore pulp does not have bulk particle, can not result in blockage and affect the circulation stirring of pump with slurry, pump with slurry sprays into the bulk slag can concentrated and spray and be gathered in the cone end toward bottom, make the complete loose pulp of slag in bucket with slurry, at this moment open stirring motor with slurry again and make whole bucket ore pulp homogenising, carry out slurry output.Bulk slag is broken up in the effect of pump with slurry, and avoid mixer blocked and cause damage, stop the secondary settlement of ore pulp, favourable ore pulp evenly exports.
After certain washing with slurry completes, hydraulic pressure can be entered and extract operation; Start hydraulic pressure force (forcing) pump and carry out hydraulic pressure expansion deckle board inner septum, realize extruding of expanding, content liquid in filter cake is reduced.
Expand at the end of extruding, open motor-operating mechanism and make magnetic stripe substrate close to magnetic-control water discharge-nozzle, common water nozzle maintenance is unimpeded but magnet on magnetic stripe substrate controls water nozzle Close All by dynamic for magnetic, forms water nozzle interval and opens.
Open outlet valve, in storage tank, clear water delivers into filter press by filter pressing pump, after clear water enters filter press, boosting is assembled in the filtrating-pressing plate frame that magnetic-control water discharge-nozzle is closed, pressure raises the pressure reduction that just can be formed and often open between common water nozzle filtrating-pressing plate frame, pressure reduction makes water pass filter cake between sheet frame, realizing clear water extruding, discharging by often opening common water nozzle through clear water, realize filter cake again penetrated by clear water and wash, further reduce water-soluble valuable constituent (mainly metal ion) content in filter cake, realize energy-saving and emission-reduction.
Compared with prior art, the beneficial effects of the utility model are:
Do not have large change to common filter press, the convenient recycling realizing valuable constituent (mainly metal ion) in slag filter cake, the rate of recovery reaches more than 90%, can significantly energy-saving and emission-reduction, improves yield; If water to be changed into other solvent, also can other valuable constituent in convenient recovery filter cake; It is ingenious that magnetic moves valve simplicity of design, and a controlling organization just can control hundreds and thousands of magnetic-control water discharge-nozzles simultaneously, greatly reduces the labour intensity of press filtration operation breaker in middle water nozzle, also improves the security of operation; Magnetic dynamic control water nozzle is more simple and reliable than electromagnetic valve structure, is difficult to blocking, does not also need electric wire and power supply, use very easy.
Present design is particularly suitable for requiring that the occasion of thoroughly cleaning filter cake and reclaiming valuable constituent uses, and can separate operations on demand, meets various instructions for use.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of the present utility model.
Fig. 2 is that magnetic moves the planar structure schematic diagram controlling water nozzle.
Fig. 3 is that magnetic moves the planar structure schematic diagram controlled when water nozzle is closed.
Fig. 4 is that magnetic moves the planar structure schematic diagram controlled when water nozzle is opened.
In figure, each label represents:
1, ore pulp import; 2, filter press plate; 3, water nozzle; 4, magnetic stripe substrate; 5, motor-operating mechanism; 6, hydraulic jack; 7, hydraulic power unit; 8, filter pressing pump; 9, bucket with slurry; 10, stirring motor; 11, reductor; 12, mixer base; 13, chemical combination bucket is stirred; 14, shaft; 15, stirring vane; 16, chemical combination outlet valve; 17, motor with slurry and reductor; 18, shaft with slurry; 19, stirring vane with slurry; 20, outlet valve with slurry; 21, outlet valve; 22, storage tank; 23, gear wheel; 24, pinion; 25, magnet; 26, pump with slurry; 31, plastic jacket; 32, steel disk; 33, lock nut; 34, swivel nut; 35, valve rod; 36, valve body; 37, hickey; 38, drain pipe; 39, spool; 40, plug screw.
Detailed description of the invention
Now by reference to the accompanying drawings, the utility model is illustrated further.
Fill rinsing type ore pulp filter press as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise the filter press be made up of ore pulp import 1, filter press plate 2, hydraulic power unit 7 and hydraulic jack 6, by stirring motor 10, reductor 11, the stirring chemical combination bucket 13 that mixer base 12, shaft 14 and stirring vane 15 form is connected ore pulp import 1 through chemical combination outlet valve 16 with filter pressing pump 8, the bucket with slurry 9 be made up of motor with slurry and reductor 17, shaft with slurry 18, stirring vane with slurry 19 and pump with slurry 26 is connected ore pulp import 1 through outlet valve 20 with slurry and filter pressing pump 8, storage tank 22 is connected ore pulp import 1 through outlet valve 21 with filter pressing pump 8, common water nozzle and magnetic dynamic control water nozzle are installed in filter press plate 2 interval, the dynamic water nozzle that controls of magnetic comprises plastic jacket 31, steel disk 32, lock nut 33, swivel nut 34, valve rod 35, valve body 36, hickey 37, drain pipe 38, spool 39 and plug screw 40, hickey 37 realizes the connection with filter press plate 2, swivel nut 34 pairs of valve rods 35 effect of contractions are convenient to valve rod 35 and are moved up and down flexibly, when steel disk 32 moves upward by magneticaction, movable valve plug 39 can be with upwards to coordinate valve seat to close fluid course by valve rod 35, when magnetic force is removed, spool 39 meeting free-falling under gravity, make valve opening, magnetic dynamic control is provided with magnetic stripe substrate 4 near water nozzle, and magnetic stripe substrate 4 is provided with magnet 25, and magnetic stripe substrate 4 connects motor-operating mechanism 5, and motor-operating mechanism 5 realizes magnet 25 and is toward or away from magnetic dynamic control water nozzle.Namely magnetic field is near closing water nozzle, and magnetic field is left and just opened water nozzle, realizes Magnetic Control water nozzle switch.
Described motor-operating mechanism 5 drives pinion 24 to rotate, pinion 24 engages with gear wheel 23, gear wheel 23 and magnetic substrate 4 connect as one, when gear wheel 23 drives magnet 25 close to spool 39, spool 39 is attracted to mention closedown water nozzle, when gear wheel 23 drives magnet 25 away from spool 39, spool 39 departs from magnetic influence, and water nozzle is opened in free-falling under gravity.
During press filtration operation, carry the ore pulp stirred in chemical combination bucket 13 to enter filling rinsing type filter press by filter pressing pump 8 and carry out press filtration, the common water nozzle that filtrate is installed by interval and the dynamic water nozzle that controls of magnetic are discharged, to a certain degree explanation filtration end is reduced to when going out flow quantity, now close chemical combination outlet valve 16, open outlet valve 20 with slurry, the slurries that clean slag and water in bucket 9 with slurry are formed are conveyed into filter press by filter pressing pump 8, before hydraulic pressure is extracted, carry out this step operate the liquid stream runner that press filtration can be utilized to be formed and realize displacement and washing to the water-soluble valuable constituent (mainly metal ion) in filter cake, the ore pulp simultaneously allocated into fully can fill up filter press, avoid because in filter press plate, space is larger, the excessive compression that barrier film hydraulic expansion causes barrier film deckle board and expansion damage.
Bucket 9 with slurry drops into the press filtration slag cleaned, add water to appropriate, open pump 26 with slurry and slag is smashed refinement, bucket bottom with slurry cone structure can make into lump ore slag and concentrate on cone bucket bottom, pump 26 with slurry sucks top ore pulp does not have bulk particle, can not result in blockage and affect the circulation stirring of pump with slurry, pump with slurry sprays into the bulk slag can concentrated and spray and be gathered in the cone end toward bottom, make the complete loose pulp of slag in bucket with slurry, at this moment open stirring motor 17 with slurry again and make whole bucket ore pulp homogenising, carry out slurry output.Bulk slag is broken up in the effect of pump 26 with slurry, and avoid mixer blocked and cause damage, stop the secondary settlement of ore pulp, favourable ore pulp evenly exports.
After certain washing with slurry completes, hydraulic pressure can be entered and extract operation; Start hydraulic pressure force (forcing) pump and carry out hydraulic pressure expansion deckle board inner septum, realize extruding of expanding, content liquid in filter cake is reduced.
Expand at the end of extruding, open motor-operating mechanism 5 and make magnetic stripe substrate 4 close to magnetic-control water discharge-nozzle, common water nozzle maintenance is unimpeded but magnet 25 on magnetic stripe substrate 4 controls water nozzle Close All by dynamic for magnetic, forms water nozzle interval and opens.
Open outlet valve 21, in storage tank 22, clear water delivers into filter press by filter pressing pump 8, after clear water enters filter press, boosting is assembled in the filtrating-pressing plate frame that magnetic-control water discharge-nozzle is closed, pressure raises the pressure reduction that just can be formed and often open between common water nozzle filtrating-pressing plate frame 2, pressure reduction makes water pass filter cake between sheet frame, realizing clear water extruding, discharging by often opening common water nozzle through clear water, realize filter cake again penetrated by clear water and wash, further reduce water-soluble valuable constituent (mainly metal ion) content in filter cake, realize energy-saving and emission-reduction.
Above-mentioned just preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.Any those of ordinary skill in the art, when not departing from technical solutions of the utility model scope, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solutions of the utility model, according to the utility model technical spirit to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solutions of the utility model protection.
Claims (2)
1. fill rinsing type ore pulp filter press for one kind, comprise the filter press be made up of ore pulp import, filter press plate, hydraulic power unit and hydraulic jack, it is characterized in that: by stirring motor, reductor, the stirring chemical combination bucket that mixer base, shaft and stirring vane form is connected ore pulp import through chemical combination outlet valve with filter pressing pump; The bucket with slurry be made up of motor with slurry and reductor, shaft with slurry, stirring vane with slurry and pump with slurry is connected ore pulp import through outlet valve with slurry and filter pressing pump; Storage tank is connected ore pulp import through outlet valve with filter pressing pump; Common water nozzle and magnetic dynamic control water nozzle are installed in filter press plate interval, the dynamic water nozzle that controls of magnetic comprises plastic jacket, steel disk, lock nut, swivel nut, valve rod, valve body, hickey, drain pipe, spool and plug screw, hickey realizes the connection with filter press plate, swivel nut plays effect of contraction to valve rod and is convenient to valve rod and moves up and down flexibly, when steel disk moves upward by magneticaction, valve seat upwards can be coordinated to close fluid course by valve rod band movable valve plug, when magnetic force is removed, spool can free-falling under gravity, makes valve opening; Magnetic dynamic control is provided with magnetic stripe substrate near water nozzle, and magnetic stripe substrate is provided with magnet, and magnetic stripe substrate connects motor-operating mechanism, and motor-operating mechanism realizes magnet and is toward or away from magnetic dynamic control water nozzle.
2. filling rinsing type ore pulp filter press according to claim 1, it is characterized in that: described motor-operating mechanism drives pinion to rotate, pinion engages with gear wheel, gear wheel and magnetic substrate connect as one, when gear wheel drives magnet close to spool, spool is attracted to mention closedown water nozzle, when gear wheel drives magnet away from spool, spool departs from magnetic influence, and water nozzle is opened in free-falling under gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558290.7U CN204034360U (en) | 2014-09-26 | 2014-09-26 | Fill rinsing type ore pulp filter press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558290.7U CN204034360U (en) | 2014-09-26 | 2014-09-26 | Fill rinsing type ore pulp filter press |
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| CN204034360U true CN204034360U (en) | 2014-12-24 |
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| CN201420558290.7U Expired - Fee Related CN204034360U (en) | 2014-09-26 | 2014-09-26 | Fill rinsing type ore pulp filter press |
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Cited By (17)
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| CN104190127A (en) * | 2014-09-26 | 2014-12-10 | 吉首大学 | Filling and washing type ore pulp press filter |
| CN104911347A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Device for carrying out chemical combination and efficient filter pressing in manganese electrolyzing process |
| CN104911346A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Combined and efficient filter pressing device in electrolytic manganese process |
| CN104911348A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Combined and efficient filter pressing device in electrolytic zinc process |
| CN104922951A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Pump-circulation anti-blocking type efficient basic magnesium carbonate filter pressing device |
| CN104922952A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Chemical combination and efficient filter-pressing device in zinc electrolysis process |
| CN104928466A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Device for conducting chemical combination and efficient filter pressing in electrolytic manganese process |
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| CN104961145A (en) * | 2015-07-08 | 2015-10-07 | 吉首大学 | Pump cycle blockage prevention device for efficiently pressing and filtering basic magnesium carbonate |
| CN105002304A (en) * | 2015-07-08 | 2015-10-28 | 吉首大学 | Sugarcane juicing and efficient filter pressing device |
| CN105000590A (en) * | 2015-07-08 | 2015-10-28 | 吉首大学 | Chemical combination and efficient filter pressing device in electrolytic zinc process |
| CN105018723A (en) * | 2015-07-08 | 2015-11-04 | 吉首大学 | Chemical combination and efficient filter pressing device in manganese electrolysis process |
| CN105018652A (en) * | 2015-07-08 | 2015-11-04 | 吉首大学 | Sugarcane juicing and efficient filter pressing device |
| CN105031987A (en) * | 2015-07-08 | 2015-11-11 | 吉首大学 | Pump-cycle anti-plugging type efficient filter pressing device for basic magnesium carbonate |
| CN105154668A (en) * | 2015-07-08 | 2015-12-16 | 吉首大学 | Device for conducting combination and efficient filter pressing in zinc electrolysis process |
| CN104984576B (en) * | 2015-07-08 | 2016-08-24 | 吉首大学 | Basic magnesium carbonate is carried out the device of efficient filter pressing by a kind of pump circulation anti-blockage type |
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- 2014-09-26 CN CN201420558290.7U patent/CN204034360U/en not_active Expired - Fee Related
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| CN104190127A (en) * | 2014-09-26 | 2014-12-10 | 吉首大学 | Filling and washing type ore pulp press filter |
| CN104190127B (en) * | 2014-09-26 | 2015-11-04 | 吉首大学 | Fill rinsing type ore pulp filter press |
| CN105002304A (en) * | 2015-07-08 | 2015-10-28 | 吉首大学 | Sugarcane juicing and efficient filter pressing device |
| CN105000590A (en) * | 2015-07-08 | 2015-10-28 | 吉首大学 | Chemical combination and efficient filter pressing device in electrolytic zinc process |
| CN104922951A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Pump-circulation anti-blocking type efficient basic magnesium carbonate filter pressing device |
| CN104922952A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Chemical combination and efficient filter-pressing device in zinc electrolysis process |
| CN104928466A (en) * | 2015-07-08 | 2015-09-23 | 吉首大学 | Device for conducting chemical combination and efficient filter pressing in electrolytic manganese process |
| CN104943221A (en) * | 2015-07-08 | 2015-09-30 | 吉首大学 | High-efficiency filter-press device of squeezed sugarcane juice |
| CN104943220A (en) * | 2015-07-08 | 2015-09-30 | 吉首大学 | High-efficiency filter-press device of squeezed sugarcane juice |
| CN104961145A (en) * | 2015-07-08 | 2015-10-07 | 吉首大学 | Pump cycle blockage prevention device for efficiently pressing and filtering basic magnesium carbonate |
| CN104911346A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Combined and efficient filter pressing device in electrolytic manganese process |
| CN104911348A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Combined and efficient filter pressing device in electrolytic zinc process |
| CN105018723A (en) * | 2015-07-08 | 2015-11-04 | 吉首大学 | Chemical combination and efficient filter pressing device in manganese electrolysis process |
| CN104911347A (en) * | 2015-07-08 | 2015-09-16 | 吉首大学 | Device for carrying out chemical combination and efficient filter pressing in manganese electrolyzing process |
| CN105018652A (en) * | 2015-07-08 | 2015-11-04 | 吉首大学 | Sugarcane juicing and efficient filter pressing device |
| CN105031987A (en) * | 2015-07-08 | 2015-11-11 | 吉首大学 | Pump-cycle anti-plugging type efficient filter pressing device for basic magnesium carbonate |
| CN105154668A (en) * | 2015-07-08 | 2015-12-16 | 吉首大学 | Device for conducting combination and efficient filter pressing in zinc electrolysis process |
| CN104922952B (en) * | 2015-07-08 | 2016-06-08 | 吉首大学 | Chemical combination in electrolytic zinc technique and efficient filter-pressing device |
| CN104984576B (en) * | 2015-07-08 | 2016-08-24 | 吉首大学 | Basic magnesium carbonate is carried out the device of efficient filter pressing by a kind of pump circulation anti-blockage type |
| CN105018723B (en) * | 2015-07-08 | 2017-12-19 | 湖南双创部落信息咨询服务有限责任公司 | Chemical combination and efficient filter-pressing device in electrolytic manganese process |
| CN105002304B (en) * | 2015-07-08 | 2018-07-13 | 吉首大学 | Sugar cane crushing and filter-pressing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150926 |
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| EXPY | Termination of patent right or utility model |