CN201140539Y - Ring-mould extrusion moulding machine - Google Patents
Ring-mould extrusion moulding machine Download PDFInfo
- Publication number
- CN201140539Y CN201140539Y CNU2007200975488U CN200720097548U CN201140539Y CN 201140539 Y CN201140539 Y CN 201140539Y CN U2007200975488 U CNU2007200975488 U CN U2007200975488U CN 200720097548 U CN200720097548 U CN 200720097548U CN 201140539 Y CN201140539 Y CN 201140539Y
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- Prior art keywords
- ring
- pressure roller
- ring mould
- circular mold
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
- B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
- B30B11/207—Feed means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
- B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
Abstract
The utility model relates to a circular mold extrusion forming machine which can extrude materials whose extrusion forming is difficult, extrusion density is small, weight is light, volume is big and water content is high and the like, such as waste RDF, straw RDF, sludge RDF, filtered mud, dangerous refuse and the like, a shaft gear which is connected with a motor is installed in a reducer casing body of the machine, the shaft gear is connected with a speed reduction gear, which is connected with a main drive shaft, a feeding opening is arranged on the front face of a circular mold cover, a discharging opening is arranged on the bottom, a circular mold extrusion chamber is installed in the inner of the circular mold cover and is composed of a circular mold, a compression roller and a plough, wherein the circular mold is connected with the main drive shaft, a mold hole is arranged on the circular mold, the compression roller is installed in the circular mold and is supported though a supporting shaft, a reversed V-shape spiral groove is arranged on the periphery of the compression roller, and the plough which is positioned on the feeding opening and is arranged along the radius of the circular mold is fixed on the supporting shaft. The utility model has the advantages of big extrusion power, high manufacturing efficiency and low energy consumption, the compression roller of the reversed V-shape spiral groove has the function of discharging gas in materials through a spiral groove, the quality of the extruded granule products is good, and the density is big.
Description
Technical field
The utility model belongs to combustible material in a kind of rubbish, mud moisture content≤20%, filter mud moisture content≤20% and biomass material: stalk, wood chip, medium-height grass dregs of a decoction the like waste and coal mix the extrusion formation equipment as utilization of regenerative energy, particularly are used for the little (0.1～0.5t/m of extruding density
3), the material of big, the more high difficult extrusion modling of moisture content of in light weight, volume such as above-mentioned materials such as pressing waste RDF, stalk RDF, mud RDF, filter mud and hazardous waste are as the ring model extrusion machine of utilization of regenerative energy.
Background technology
The extrusion equipment and the testing equipment of the house refuse RDF renewable sources of energy mainly contain both at home and abroad:
U.S.'s punching type single lead screw ex truding briquetting machine, it is that it has big extruding force by shaping and roasting furnace charge and brown coal brick moulding development, 100MPa～200Mpa, power＞100KW, house refuse RDF moulding power consumption 20～35KWh per ton, production efficiency is low, and every h has only 1～3t.
The double-shaft spiral single lead screw ex truding briquetting machine of HIT, Tian Xiong company is by extruding fish meal and catalyst development, extrudes 40 two kinds of particles of particle Φ 25, Φ, and its technical-economic index and impact briquetting machine are similar, and productivity ratio is then lower.
Domestic house refuse RDF mixes coal 20%, and China Mining University tests with hydraulic press, test optimum pressure 70-106Mpa, and HeiLongJiang Science academy is tested with hydraulic press, and pressure is 15-50Mpa, and optimum pressure is 25Mpa.
China Mining University's hydraulic press conclusion (of pressure testing) is: briquetting pressure 35Mpa, and moulding is poor, and is loose, frangible, and have gentle hands is touched can be broken.
The product that China Mining University releases is a roller briquetting machine, and it has high productivity ratio, low characteristics such as energy consumption, but this machine is not suitable for pressing waste RDF, stalk RDF, mud RDF and hazardous waste particle; Its reason place: material is entering pair roller when extruding, and one is to be two extruding between the line between two cylindrical rollers, rather than the extruding between two faces; The 2nd, material is extruded the time of stop in two pressure rollers too short, is far smaller than 0.1s, can't finish plastic deformation; The 3rd, briquetting pressure 5-15Mpa, briquetting pressure is too low, and limiting pressure appears in pressing waste RDF time 〉=10Mpa.
Therefore extrusion modling house refuse RDF still finds no suitable shaping extruder both at home and abroad.
Both at home and abroad the situation of biomass material single lead screw ex truding briquetting machine such as stalk is: the biomass material of≤6mm granularity under certain pressure, is heated or do not add hot extrusion molding, be shaped as various shaped fuels such as cylindrical particle, bulk, its density is 0.8～1.32t/m
3, be 0.3～0.8t/m before the material forming
3, light especially, contain a large amount of gases.
Domestic have 6 kinds of model make-up machines, and the common situation that exists is:
The one, productivity ratio is low, 50～150kg/h;
The 2nd, energy consumption is too high, 71.4～120.5KWh/t, average 100KWh;
The 3rd, the operating cost height is difficult to large-scale popularization.
14 kinds of model single lead screw ex truding briquetting machines are arranged, the three major types type abroad: screw extrusion, hydraulic pressure punching press and mechanical stamping, common issue with is:
The one, production capacity is lower;
Screw extrusion productivity ratio is low.50～800kg/h；
Hydraulic pressure punching production rate.65.5～525kg/h；
Mechanical stamping productivity ratio.675～2000kg/h；
The 2nd, high energy consumption;
Screw extrusion is 56～100kWh/t, average out to 65KWh/t;
Hydraulic pressure is stamped into 56～100kWh/t, average out to 85KWh/t;
Mechanical stamping is 21～40KWh/t, average out to 33KWh/t;
In a word, biomass extrusion molding machine ubiquity energy consumptions such as domestic and international stalk are big, and productivity ratio is low again, and operating cost is too high, is difficult to wide popularization and application.
Mud (filter mud) single lead screw ex truding briquetting machine does not appear in the newspapers both at home and abroad.
Solid dangerous waste, as contain the lime-ash and the medical lime-ash of dioxin, density is little, is 0.1-0.5t/m
3, volume is big, solidifies, stabilisation is very difficult, it is carried out extruded granule density reach 1～1.5t/m
3, do not appear in the newspapers both at home and abroad.
The utility model content
The utility model is at many deficiencies of domestic and international single lead screw ex truding briquetting machine, a kind of ring model extrusion machine is provided, it is big to have extruding force, the molding materials time of staying is long, and energy consumption is low, the characteristics that productivity ratio is high, its " ∧ " shape helicla flute pressure roller of having particularly, have the material degassing function, adapt to the light material of little, the bulky multiple spy of density, be suitable for industrialization promotion and use.
The technical solution of the utility model is by following realization: a kind of ring model extrusion machine, and it is characterized in that: it comprises transmission device and pressurizing unit,
Wherein, transmission device is made up of support, motor and transmission mechanism, motor and transmission mechanism are fixed on the support, transmission mechanism comprises the reduction box casing, the shaft gear that is connected with motor is installed in the casing, shaft gear connects reduction gearing, and reduction gearing is connected with final drive shaft, and back shaft also is installed in the reduction box;
Wherein, pressurizing unit comprises ring mould cover, and ring mould cover front is provided with charging aperture, and the bottom is provided with discharge port, inside is provided with ring mould extrusion chamber, ring mould extrusion chamber is made up of ring mould, pressure roller and plough, and the ring mould is connected with final drive shaft, and the ring mould is provided with nib, in the ring mould pressure roller is housed, pressure roller is connected with back shaft, is laid with many ∧ type helicla flutes on the pressure roller circumference, and the charging aperture place is fixed on the back shaft along the plough of ring mode radius setting.
Above-mentioned pressure roller can be installed 2-3.
Keep 0.1～0.5mm gap between above-mentioned ring mould and the pressure roller.
Above-mentioned nib is provided with charging hole, compression district and elastic deformation area from inside to outside successively, and charging hole is 30 ° of trumpet types, and the elastic deformation area is 0.05-1 ° a trumpet type.
The other end of above-mentioned back shaft is installed overload protection arrangement; form by safety key seat, security insurance pin, fairlead, spring; safe key seat is fixed by the bearing block that is provided with on security insurance pin and the back shaft, and spring clip is contained between the fairlead safety key seat, is fixed by nut.
Above-mentioned support is a frame structure.
Above-mentioned reduction box casing is provided with radial reinforcement.
Above-mentioned final drive shaft, axle point wheel and reduction gearing adopt the alloy steel material manufacturing.
The utlity model has following advantage: 1, ∧ type helicla flute pressure roller has by gas function in the helicla flute discharge material, and extruding force is big, is 30Mpa-150Mpa; 2, productivity ratio height is 2000kg-20000kg/h; 3, the pressing materials time of staying long, be 5S～80S; 4, particle diameter Φ 8～50, good product quality, the big (1～1.5t/m of density
3); 5, energy consumption is low, mud 7～10KWh/t (Φ 13mm), moulded coal 9～15KWh/t (Φ 13mm), stalk 15～25KWh/t (Φ 13mm), rubbish 9～20KWh/t (Φ 13mm), hazardous waste lime-ash 9-20KWh/t (Φ 13).
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is pressure roller " ∧ " type swivelling chute partial schematic diagram.
Fig. 3 is ring mould and two pressure roller installation site schematic diagrames.
Fig. 4 is ring mould and three pressure roller partial schematic diagrams.
Fig. 5 is the nib partial schematic diagram.
Fig. 6 is the reduction box partial schematic diagram.
Fig. 7 is the support partial schematic diagram.
Fig. 8 is safe overload protection arrangement partial schematic diagram.
The specific embodiment
Embodiment: shown in Fig. 1-8, a kind of ring model extrusion machine, it comprises transmission device and pressurizing unit, wherein, transmission device (shown in Fig. 1, the 6-7) is made up of frame structure support 13, motor 7 and transmission mechanism, motor 7 and transmission mechanism are fixed on the support 13, transmission mechanism comprises the reduction box casing 6 that is provided with radial reinforcement 21, the shaft gear 8 that is connected with motor 7 is installed in the casing 6, shaft gear 8 connects reduction gearing 9, reduction gearing 9 is connected with final drive shaft 10, and back shaft 5 also is installed in the reduction box 6; Final drive shaft 10, shaft gear 8 and reduction gearing 9 adopt the alloy steel material manufacturing.
Wherein, pressurizing unit (Fig. 1-3, shown in 5) comprise and encircle mould cover 1, ring mould cover 1 front is provided with charging aperture 12, the bottom is provided with discharge port 14, inside is provided with ring mould extrusion chamber, ring mould extrusion chamber is by ring mould 3, pressure roller 4 and plough 2 are formed, ring mould 3 is connected with final drive shaft 10, ring mould 3 is provided with nib 15, nib 15 is provided with charging hole 15-1 from inside to outside successively, compression district 15-2 and elastic deformation area 15-3, charging hole is 30 ° of trumpet types, and the elastic deformation area is 0.05-1 ° a trumpet type, is provided with 2 pressure rollers 4 in the ring mould 3, keep 0.1～0.5mm gap between ring mould 3 and the pressure roller 4, pressure roller 4 is supported by back shaft 5, is laid with many ∧ type helicla flutes on pressure roller 4 circumference, is positioned at charging aperture 12 places and is fixed on the back shaft 5 along the plough 2 that encircles mould 3 radius settings; The other end of back shaft 5 is installed overload protection arrangement; form by safety key seat 16, security insurance pin 17, fairlead 18, spring 19; safe key seat 16 is fixing by the bearing block 20 that is provided with on security insurance pin 17 and the back shaft 5; spring 19 is installed between fairlead 1 and the safe key seat 16, and is fixing by nut 22.
Above-mentioned pressure roller 4 can also be 3 (as shown in Figure 4).
The material principle of extrusion moulding:
Frequency control belt feeder even feeding, material is sent into the 0.1～0.5mm gap that keeps between ring mould and the pressure roller by charging aperture by ring mould cover by plough, under the ring mould drives, utilize material to be distributed in the friction that the gap between ring mould and the pressure roller produces, the drive pressure roller rotates, and pressure roller is supported by back shaft; Twin pressure roller drives twin pressure roller by the ring mould and rotates; Three pressure rollers drive three pressure rollers by the ring mould and rotate; After material enters the ring mould, the ring mould whenever turns around, as two rollers, then material is extruded two-layer material in the nib that entrance pressure roller roll surface covers, three pressure rollers are three layers, material is through the rotation extruding with many ∧ shape helicla flute pressure rollers, by the gas in many continuous pressing materials of helicla flute and the discharge material, enter material and the compression layer that rotates pressure roller formation wedge shape in the ring mould, under the rotation extruding of ∧ shape helicla flute pressure roller, constantly from helicla flute, discharge the gas that is mingled with in material and the material, be subjected to ∧ helicla flute pressure roller and successively rotate powerful extruding down, after the material layer upon layer is discharged gas, enter in the charging hole of nib, enter nib compression district successively, continue to enter the nib elastic deformation area, be shaped to cylindrical, be expanded to D3 by D2, be out of shape lessly, be expanded to L3 by length L 2, be out of shape bigger, material is under the effect of rotation pressure roller extruding force, and layer upon layer is discharged the gas that is mingled with in material and the material before entering 30 ° of charging apertures of nib from helicla flute, overcome the frictional force with the nib hole wall, the pressing materials in the nib compressional zone of layer upon layer; The layer upon layer material is finished plastic deformation in nib; One deck material and two layers, three layers ... between the n layer material, under the powerful extruding of rotation pressure roller, in nib, be bonded to cylindrical particle; Material is continuously extruded down at the rotation pressure roller, the cylindrical bulky grain of finishing plastic deformation in the compressional zone is clamp-oned depanning after elastic deformation area's dilatancy, and under the centrifugal action that the rotation of ring mould produces, particle throws away ring mould nib, strike on the Dump gate, fall into conveyer belt from discharge port and be transported away; Cylindrical bulky grain will have enough fall strength of briquette, could guarantee cylindrical particle ratio of briquetting 〉=98%, guarantee that key that cylindrical bulky grain has a sufficient intensity is the degassing function of ∧ helicla flute pressure roller flute profile, exhaust better, granule strength is better, and ∧ helicla flute pressure roller is the cylindrical oarse-grained key of pressing waste RDF, stalk RDF, the mixed coal of mud RDF.
In addition, material stops the sufficiently long time in the compressional zone.The one, the material that enters in the ring mould and between the ∧ shape helicla flute pressure roller of rotation the material bed thickness of wedge shape compression layer that forms by thick attenuation, material bedly be subjected to ascending extruding force, ∧ shape helicla flute pressure roller is continuous pressing materials in rotation, constantly discharge material and the gas that is mixed in the material, material in the wedge shape compression layer is subjected to rotating extruding and constantly discharges the gas that is mingled with, be generally 0.1～0.5mm gap between the great circle arcwall face in the cylindrical surface of pressure roller cylindrical and the ring mould, form the material bed wedge shape extruding between two faces and the face between them, with the both sides of the gas that is mingled with in material and material row to pressure roller, this is the maximum difference of ring mould extruder and the extruding of pair roller extruder line, also be it and hydraulic pressure (machinery) stamping machine, twin rollers can't have prime advantage by the exhaust phase ratio from material, also be that its energy consumption is low, the grain products quality that squeezes out is good, the key that density is big.Successively in compression layer, rotate the material of extruding and exhaust through ∧ shape helicla flute pressure roller, 0.1～0.5 gap between process ring mould and the pressure roller, the brute force extruding of layer upon layer, material is squeezed to the 30 ° of charging holes in ring modular group hole, through constantly compression once more, then enter among the nib, 1 layer of material, 2 layers, 3 layers ... the n layer, got into the compressional zone of moulding, up to the whole spaces that are crowded with nibs, then by the pressure roller of continuous rotation with the n1 layer, the n2 layer, the n3 layer ... nn layer material successively got into nib moulding compressional zone, and the material in the nib moulding compressional zone is all extruded, enter the elastic deformation area, form great circle cylindricality particle, therefore material time of staying in ring mould extrusion ring nib long, push the summation of the time of staying for charging aperture and compression district and elastic deformation area.
With Φ 350 ring mould extruders is example:
Ring nib internal diameter Φ 350,300 rev/mins of revolutions, extruding Φ 15 cylindrical particles, compressional zone L/d=6, L=90mm, Φ 350 ring loft speed v=5.49m/s are 1mm as each extruded layer thickness, need 90 layers of extruding, as be the twin pressure roller extruder, then need 45 to change, material is the time of staying 〉=9s in the compressional zone, does not comprise charging aperture and elastic deformation area's the time of staying; As be three pressure roller extruders, then need 30 to change, material is the time of staying 〉=6s in the compressional zone, does not comprise charging aperture and elastic deformation area's the time of staying; The time of staying＜0.1s compares with roller briquetting machine, then encircles long 60～90 times of the mould extruder time of staying, and the time of staying of ram extrusion machine will keep 6s, then per minute can only dash 5 times, and efficient is too low, wants high as ram extrusion machine production efficiency, per minute dashes 15 times, and the time of staying can only guarantee 2s.
Ring model extrusion facility have the longest time of staying of material and maximum density, can reach 1.45～1.5t/m as garbage fuel density
3, stalk fuel density can reach 1.01～1.22t/m
3
For guaranteeing high-power high pulling torque and can carry the impact of alternate load, the one, the reduction box casing adopts radial reinforcement, and support adopts frame structure, guarantees that single lead screw ex truding briquetting machine extruding Φ 8～Φ 50 big column particles have the structure of stability, rigidity and vibration resistance; The 2nd, reduction gearing and shaft gear, final drive shaft high pulling torque driving member adopt the steel alloy manufacturing, and carry out modifier treatment.
Spring Flexible Safety overload safety device; when the pressure roller overburden; or be mingled with foreign matter in the material, as iron block, wooden stick, stone, brick etc., be the protection device security; cut off safety pin; safe key seat stops operating, and bearing block is rotated further under effect of inertia, makes nut loosening gradually; the size of load force is regulated by the pressure of nut holddown spring, and back shaft stops operating then.
Claims (7)
1, a kind of ring model extrusion machine, it is characterized in that: it comprises transmission device and pressurizing unit,
Wherein, transmission device is made up of support, motor and transmission mechanism, motor and transmission mechanism are fixed on the support, transmission mechanism comprises the reduction box casing, the shaft gear that is connected with motor is installed in the casing, shaft gear connects reduction gearing, and reduction gearing is connected with final drive shaft, and back shaft also is installed in the reduction box;
Wherein, pressurizing unit comprises ring mould cover, and ring mould cover front is provided with charging aperture, and the bottom is provided with discharge port, inside is provided with ring mould extrusion chamber, ring mould extrusion chamber is made up of ring mould, pressure roller and plough, and the ring mould is connected with final drive shaft, and the ring mould is provided with nib, in the ring mould pressure roller is housed, pressure roller is connected with back shaft, is laid with many ^ type helicla flutes on the pressure roller circumference, is positioned at the charging aperture place and is fixed on the back shaft along the plough that encircles the mode radius setting.
2, a kind of ring model extrusion machine according to claim 1 is characterized in that: above-mentioned pressure roller is for installing 2-3.
3, a kind of ring model extrusion machine according to claim 1, it is characterized in that: above-mentioned nib is provided with charging hole, compression district and elastic deformation area from inside to outside successively, and charging hole is 30 ° of trumpet types, and the elastic deformation area is a 0.05-1 ° of trumpet type.
4, a kind of ring model extrusion machine according to claim 1; it is characterized in that: the other end of above-mentioned back shaft is installed overload protection arrangement; form by safety key seat, security insurance pin, fairlead, spring; safe key seat is fixed by the bearing block that is provided with on security insurance pin and the back shaft; spring clip is contained between fairlead and the safe key seat, is fixed by nut.
5, a kind of ring model extrusion machine according to claim 1, it is characterized in that: above-mentioned support is a frame structure.
6, a kind of ring model extrusion machine according to claim 1, it is characterized in that: above-mentioned reduction box casing is provided with radial reinforcement.
7, a kind of ring model extrusion machine according to claim 1 is characterized in that: above-mentioned final drive shaft, shaft gear and reduction gearing adopt the alloy steel material manufacturing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200975488U CN201140539Y (en) | 2007-11-08 | 2007-11-08 | Ring-mould extrusion moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200975488U CN201140539Y (en) | 2007-11-08 | 2007-11-08 | Ring-mould extrusion moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201140539Y true CN201140539Y (en) | 2008-10-29 |
Family
ID=40068253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200975488U Expired - Fee Related CN201140539Y (en) | 2007-11-08 | 2007-11-08 | Ring-mould extrusion moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201140539Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310578A (en) * | 2011-08-31 | 2012-01-11 | 萧钠 | Biomass molding machine with annular tooth-shaped mold |
| CN102494720A (en) * | 2011-12-13 | 2012-06-13 | 南京理工大学 | Rotary powder rolling extrusion forming test device |
| CN103753849A (en) * | 2014-01-06 | 2014-04-30 | 湖北合加环境设备有限公司 | Intelligent RDF environment former |
| CN103963341A (en) * | 2014-05-22 | 2014-08-06 | 湖州镭宝机械有限公司 | Efficient biomass fuel forming machine |
| CN106393782A (en) * | 2016-06-15 | 2017-02-15 | 湖北铭鼎节能科技有限公司 | Device and method for preparing rice hull forming and briquetting fuel |
| CN107415304A (en) * | 2017-07-17 | 2017-12-01 | 徐丽 | A kind of good Chinese herbal medicine tablet press machine of tabletting effect |
| CN109051715A (en) * | 2018-08-20 | 2018-12-21 | 镇江裕太防爆电加热器有限公司 | A kind of structure for conveying for triangle magnesium pipe agglomerating plant |
| CN112645558A (en) * | 2020-12-30 | 2021-04-13 | 安阳艾尔旺新能源环境有限公司 | Sludge drying system and sludge drying treatment process |
-
2007
- 2007-11-08 CN CNU2007200975488U patent/CN201140539Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310578A (en) * | 2011-08-31 | 2012-01-11 | 萧钠 | Biomass molding machine with annular tooth-shaped mold |
| CN102494720A (en) * | 2011-12-13 | 2012-06-13 | 南京理工大学 | Rotary powder rolling extrusion forming test device |
| CN103753849A (en) * | 2014-01-06 | 2014-04-30 | 湖北合加环境设备有限公司 | Intelligent RDF environment former |
| CN103753849B (en) * | 2014-01-06 | 2015-08-19 | 湖北合加环境设备有限公司 | Intelligent RDF environment former |
| CN103963341A (en) * | 2014-05-22 | 2014-08-06 | 湖州镭宝机械有限公司 | Efficient biomass fuel forming machine |
| CN103963341B (en) * | 2014-05-22 | 2015-09-23 | 湖州镭宝机械有限公司 | A kind of efficient biomass fuel forming |
| CN106393782A (en) * | 2016-06-15 | 2017-02-15 | 湖北铭鼎节能科技有限公司 | Device and method for preparing rice hull forming and briquetting fuel |
| CN107415304A (en) * | 2017-07-17 | 2017-12-01 | 徐丽 | A kind of good Chinese herbal medicine tablet press machine of tabletting effect |
| CN107415304B (en) * | 2017-07-17 | 2019-08-09 | 刘秀梅 | A kind of Chinese herbal medicine tablet press machine |
| CN109051715A (en) * | 2018-08-20 | 2018-12-21 | 镇江裕太防爆电加热器有限公司 | A kind of structure for conveying for triangle magnesium pipe agglomerating plant |
| CN112645558A (en) * | 2020-12-30 | 2021-04-13 | 安阳艾尔旺新能源环境有限公司 | Sludge drying system and sludge drying treatment process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20161108 |