CN202573053U - Forming mold for biomass molding fuel - Google Patents
Forming mold for biomass molding fuel Download PDFInfo
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- CN202573053U CN202573053U CN 201220120632 CN201220120632U CN202573053U CN 202573053 U CN202573053 U CN 202573053U CN 201220120632 CN201220120632 CN 201220120632 CN 201220120632 U CN201220120632 U CN 201220120632U CN 202573053 U CN202573053 U CN 202573053U
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- gear
- undercut
- biomass
- molding fuel
- mould
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Abstract
The utility model discloses a forming mold for a biomass molding fuel. A first gear (1) generates undercutting to a second gear (2); the second gear (2) is a undercut gear; a tooth root part of the undercut gear is an undercut tooth profile; and the undercut tooth profile is a tooth profile formed after partial standard tooth profile of the tooth root part is undercut, so that undercut areas for storing biomass materials are respectively formed on two sides of each gear tooth root part. During engagement of the gears, a cutting effect is generated on the biomass materials stored in the undercut area, the cutting force can be decomposed into an axial component force along a forming hole, and the biomass materials are pushed into the forming hole; therefore, an extruding effect is obvious enhanced. The externally engaged gear type forming mold disclosed by the utility model has the advantages of simple structure, long service life and less energy consumption and can operate continuously; and a technical problem to be solved in a biomass molding fuel manufacturing technology is solved.
Description
Technical field
The utility model belongs to new energy field, is specifically related to be used to make a kind of external gear pump formula mould of biomass molding fuel.
Technical background
The energy is the material base that the mankind depend on for existence, is the primary condition of the national economic development.China is energy-consuming big country; Energy supply mainly relies on non-renewable fossil energies such as coal, oil and natural gas; And the immense pressure that the finiteness of fossil energy resource and development and use process thereof cause environmental ecology is seriously restricting continuous development of society economy.Renewable Energy Development is the important technology approach of sustainable development that realizes comprehensive utilization and the economic society of natural resources.
So-called biomass energy (biomass energy) is that green plants is that chemical energy is stored in the inner energy of living beings through chlorophyll with conversion of solar energy, is a kind of regenerative resource, also is unique a kind of regenerative resource.
So-called biomass molding fuel be with draft or woody biomass material through the mechanical-physical effect, be processed into the granular fuel of shape such as cylindrical, tubular.
It is the forming technique of the biomass molding fuel of raw material that Europe has taken the lead in developing with the wood chip, is that the biomass molding fuel of raw material is widely used in European countries such as Germany, Denmark, Sweden, Italy with the wood chip.
Utilizing on the mode of biomass energy, gaseous state, liquid state and solid-state three kinds are arranged, solid-state biomass molding fuel is the industrialization direction that market prospects are arranged most.According to " the medium-term and long-term development plan of regenerative resource " of the promulgation National Development and Reform Commission of the People's Republic of China (PRC) in September, 2007, to the year two thousand twenty, Chinese biological matter shaped fuel year utilization will reach 5,000 ten thousand tons.
The dried calorific value of biomass material generally at 3500kcal/kg between the 5000kcal/kg, wherein with bamboo wood for the highest.The bamboo wood and the raw coal of 1 kilogram of drying are suitable, and its calorific value is about 5000kcal/kg, are equivalent to 0.714 kilogram of raw coal (calorific value of standard coal is 7000kcal/kg, and the per kilogram raw coal is equivalent to 0.7143 kilogram of standard coal).
Piston type make-up machine, spiral make-up machine, roller press type make-up machine are the capital equipments of making biomass molding fuel.
Different with draft agricultural waste materials such as rice husk, straws, the calorific value of biomass materials such as bamboo bits, wood chip is higher, but difficult forming; Mould very easily weares and teares; Bearing breaks and happens occasionally, and is difficult to continuous operation, thereby causes maintenance cost high; Energy resource consumption is big, has improved the manufacturing cost of biomass molding fuels such as bamboo bits, wood chip greatly.
For these make-up machines of biomass molding fuel, mould with become the technical problem that needs to be resolved hurrily in the biomass molding fuel manufacturing technology based on the forming method of this mould.
Patent of invention (invention number: 201110274628.7) disclose a kind of with the mould of cylinder as pressure roller, patent of invention (invention number: 2011100022153) disclose a kind of with the mould of gear as pressure roller.In foregoing invention, a pair of cylinder in built-in moulding hole or a pair of gear constitute the roller press type mould, and its basic forming method is:
Biomass material after the pulverizing gets into gap or the inter-lobe clearance between two gears between two cylinders, and because of the grinding pressure of pressure roller to material, thereby moulding is carried out in the moulding hole that causes material to be rolled getting in the pressure roller.
There are 3 major defects in above-mentioned roller press type mould and forming method:
What be used to when 1, rolling to store biomass material is the gap between a pair of pressure roller.Said gap is very little, thus roll at every turn get into the moulding hole biomass material seldom.
2, there are many spaces in biomass material inside, thereby is compressible.The compressibility of biomass material causes most of grinding pressure to be dissipated in these spaces, and the grinding pressure that acts on biomass material reduces greatly, the extruding force wretched insufficiency that produces when rolling, and squeezing effect is poor.
3, produced great frictional force in the forming process of biomass material in the moulding hole.For overcoming this frictional force, need sizable axial compression power.Yet, can not directly produce said axial compression power to material during the pressure roller running, mould very easily weares and teares, and bearing breaks and happens occasionally, and energy resource consumption is big, is difficult to continuous operation.
Summary of the invention
Produce the principle of undercut during based on gear drive, the utility model proposes a kind of external gear pump formula mould, is used to make biomass molding fuel.
The technical scheme of the utility model is following.
A kind of mould of biomass molding fuel comprises a pair of external gear pump formula pressure roller that first gear and second gear by mutual external toothing constitute, and is used to make biomass molding fuel; Said first gear is the simple structure of circle, and the middle part is provided with the through hole that is used for the biomass collection shaped fuel; Each gear teeth of said first gear are provided with the moulding hole vertically, are used for the moulding of biomass material; Said first gear and the said second gear external toothing also produce undercut to said second gear; Said second gear is the undercut gear; The tooth root portion of said undercut gear is the undercut flank profil; Said undercut flank profil is that tooth root portion undercut falls the flank profil that forms after the part of standards flank profil, thereby the root in each gear teeth both sides forms a undercut district that is used to store biomass material respectively.
Said first gear and second gear are involute gear, and the number of teeth of said second gear is 8～12.
The standard flank profil of the tooth of said second gear is connected by one section smooth easement curve with the undercut flank profil of tooth root portion.
Each teeth groove root of said first gear also is provided with the moulding hole vertically.
Said moulding hole comprises crush zone and curing area; Said crush zone is common taper hole, and the compression ratio of said curing area is 4.5～6.
Said crush zone is the streamlined taper hole.
With the prior art contrast, the beneficial effect that the utility model produces is:
1, in the prior art, biomass material is stored in the inter-lobe clearance or in the cylinder gap.Said gap is less, and the biomass material of storage is few.In the utility model, biomass material is stored in the undercut district, and the biomass material of storage is many.
2, prior art relies on the grinding pressure of the gear teeth or cylinder generation that biomass material is expressed in the shaped hole.Because the compressibility of biomass material, most of grinding pressure is dissipated in the space between the biomass material, the extruding force wretched insufficiency that produces when rolling, and squeezing effect is poor.In the utility model, during gears engaged the biomass material that is stored in the undercut district is produced shear action, its cutting force can be decomposed into the axial compression power along the moulding hole, and the biomass material extruding is got in the moulding hole, has significantly improved squeezing effect.
3, the external gear pump formula mould that proposes of the utility model, simple in structure, long service life, energy resource consumption are few, can move continuously, have solved the technical problem that needs to be resolved hurrily in the biomass molding fuel manufacturing technology.
Description of drawings
Fig. 1 is the principle schematic of the external gear pump formula mould of the specific embodiment;
Fig. 2 is the flank profil sketch map of undercut gear among Fig. 1;
Fig. 3 is a moulding hole distribution schematic diagram vertically among Fig. 1;
Fig. 4 is the sketch map in the common taper moulding hole among Fig. 1;
Fig. 5 is the sketch map in another kind of streamlined moulding hole.
The specific embodiment
During Gear Processing, if less by the number of teeth of gear cutting machine, for example; For standard involute gear (pressure angle is that 20 °, addendum coefficient are 1); Be equal to or less than 17 o'clock by the number of teeth of gear cutting machine, certainly lead to undercut, promptly by the tooth root excision standard flank profil of gear cutting machine.Fewer by the number of teeth of gear cutting machine, undercut is more serious.
Tooth root portion undercut falls the flank profil that forms after the part of standards flank profil and is referred to as the undercut flank profil.Exist the gear of undercut flank profil to be referred to as the undercut gear.
In gear drive, undercut will produce serious interference, and gear or stuck or damage cause the transmission failure.For this reason, when undercut occurring, prior art takes technological means such as displacement to process profile modified gear, to avoid producing the undercut gear.
The present invention is used to push biomass material with the gear meshing motion, and undercut can produce undercut power, helps the extrusion modling of biomass material.Thereby the present invention constitutes external gear pump formula pressure roller mould according to undercut condition processing undercut gear with another master gear.
A kind of concrete technical scheme is as shown in Figure 1.For guaranteeing the stationarity of gear motion, have at least a pair of above gear teeth to mesh simultaneously.First gear 1 and the 2 mutual external toothings of second gear constitute a pair of external gear pump formula pressure roller, and its middle gear 2 is the undercut gear.
For involute gear, the number of teeth of second gear 2 generally can be taken as 8～12, is the undercut gear that has shaped.
The flank profil structure of second gear 2 is as shown in Figure 2, and its flank profil is divided into two sections of ab, cd, and ab is the standard flank profil, and cd is the undercut flank profil.Dotted line among the figure is by the standard flank profil of undercut, and the zone between itself and the undercut flank profil is referred to as the undercut district.The undercut district has two, the gear teeth radially both sides each one.
When external gear pump formula pressure roller produced gear motion, the biomass material that is stored in the inter-lobe clearance was rolled.Because the compressibility of biomass material, most of grinding pressure is dissipated in the space between the biomass material, and the extruding force that rolls generation is not enough, and squeezing effect is poor.
In present technique embodiment, the biomass material in inter-lobe clearance, most of biomass material is stored in the undercut district of second gear 2.When external gear pump formula pressure roller produces gear motion; 1 pair second gear of first gear 2 produces undercut; Biomass material to being stored in second gear, the 2 undercut districts produces shear action; Its cutting force can be decomposed into the axial compression power of 3 directions along the moulding hole, and the biomass material extruding is got in the moulding hole 3.
The structure in moulding hole 3 is as shown in Figure 4.Wherein, crush zone 3-1 is a common taper hole shown in Figure 3, and curing area 3-2 is a circular hole.In crush zone 3-1, biomass material is squeezed into curing molding among the curing area 3-2.The length-to-diameter of circular hole is called compression ratio among the curing area 3-2; The diameter of circular hole is generally 8mm, and compression ratio is generally 4.5～6.
Particularly, crush zone 3-1 is a streamlined taper hole shown in Figure 5, increases radial compression power to reduce axial friction.
Frictional force when being pressed into moulding hole 3 for reducing biomass material, the standard flank profil ab of second gear 2 is connected with one section smooth easement curve bc with the undercut flank profil cd of root.
In above-mentioned external gear pump formula pressure roller, first gear 1 or second gear 2 all can be used as driving wheel.The other technologies problem, for example, the connected mode of external gear pump formula pressure roller and motor, the configuration of bearing, fit, speed regulating method etc. is routine techniques.
The external gear pump formula mould that adopts the utility model to propose can be used for the biomass material of difficult forming such as bamboo bits, wood chip, the biomass material that particularly bamboo bits content is high or 100% bamboo bits constitute.
At the utility model, biomass material also comprises agricultural waste materials such as rice husk, straw, Chinese silvergrass, huge bacterium grass equal energy source grass.
At the utility model, need not any additives and cementing agent in the biomass material, die life is long, production efficiency is high, energy resource consumption is little.
Above-mentioned biomass fuel forming die is used for biomass fuel forming and comprises following processing step:
Step (1), with biomass material pulverizing, stirring, superheated steam softening and dry (moisture content is below 30%).Biomass material is got into external gear pump formula biomass fuel forming die from charging aperture;
Step (2), the running of external gear pump formula mould; Biomass material forwards the undercut district that gets into and be stored in second gear to gear, and the undercut power that produces when first gear and second gears engaged gets into the said biomass material extruding that is stored in the second under cut district in the moulding hole of first gear;
Step (3), said biomass material push in the crush zone in said moulding hole and are shaped fuel;
Step (4), said shaped fuel solidify in the curing area in said moulding hole;
Step (5), said shaped fuel get into the discharge that fractures in the middle part through hole of said first gear.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.Those of ordinary skill for technical field under the utility model; Under the prerequisite that does not break away from the utility model design; Some simple deduction or replace can also be made, for example, spur gear or helical gear can be adopted; Can also adopt various pitch curve and make undercut gear etc., all should be regarded as belonging to the protection domain of the utility model according to different undercut conditions.
Claims (6)
1. the mould of a biomass molding fuel comprises by first gear (1) of mutual external toothing and a pair of external gear pump formula pressure roller of second gear (2) formation, is used to make biomass molding fuel; Said first gear (1) is the simple structure of circle, and the middle part is provided with the through hole that is used for the biomass collection shaped fuel; Each gear teeth of said first gear (1) are provided with moulding hole (3) vertically, are used for the moulding of biomass material (4); It is characterized in that:
Said first gear (1) produces undercut to said second gear (2); Said second gear (2) is the undercut gear; The tooth root portion of said undercut gear is the undercut flank profil; Said undercut flank profil is the flank profil that forms after the tooth root portion undercut part of standards flank profil, thereby forms a undercut district that is used to store biomass material respectively in the both sides of each gear teeth root.
2. the mould of biomass molding fuel as claimed in claim 1, its characteristic is that also said first gear (1) and second gear (2) they are involute gear, the number of teeth of said second gear (2) is 8～12.
3. the mould of biomass molding fuel as claimed in claim 1, its characteristic is that also the standard flank profil of the tooth of said second gear (2) is connected by one section smooth easement curve with the undercut flank profil of tooth root portion.
4. the mould of biomass molding fuel as claimed in claim 1, its characteristic is that also each teeth groove root of said first gear (1) also is provided with moulding hole (3) vertically.
5. the mould of biomass molding fuel as claimed in claim 4, its characteristic is that also said moulding hole (3) comprises crush zone (3-1) and curing area (3-2); Said crush zone (3-1) is common taper hole, and the compression ratio of said curing area (3-2) is 4.5～6.
6. the mould of biomass molding fuel as claimed in claim 5, its characteristic is that also said crush zone (3-1) is the streamlined taper hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120632 CN202573053U (en) | 2012-03-27 | 2012-03-27 | Forming mold for biomass molding fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120632 CN202573053U (en) | 2012-03-27 | 2012-03-27 | Forming mold for biomass molding fuel |
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| CN202573053U true CN202573053U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220120632 Expired - Lifetime CN202573053U (en) | 2012-03-27 | 2012-03-27 | Forming mold for biomass molding fuel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615848A (en) * | 2012-03-27 | 2012-08-01 | 江俊逢 | Forming mold for biomass briquette and forming method |
| CN103120915A (en) * | 2013-01-24 | 2013-05-29 | 通辽市洪金机械制造有限责任公司 | Biomass gear mould blade pellet press |
| CN103120914A (en) * | 2013-01-24 | 2013-05-29 | 通辽市洪金机械制造有限责任公司 | Biomass tooth mould pellet press |
| CN109173933A (en) * | 2018-11-09 | 2019-01-11 | 高翔 | A kind of ring mold structure of the bicyclic mould double-roller granulator of external tooth |
-
2012
- 2012-03-27 CN CN 201220120632 patent/CN202573053U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615848A (en) * | 2012-03-27 | 2012-08-01 | 江俊逢 | Forming mold for biomass briquette and forming method |
| CN102615848B (en) * | 2012-03-27 | 2014-07-09 | 江俊逢 | Forming mold for biomass briquette and forming method |
| CN103120915A (en) * | 2013-01-24 | 2013-05-29 | 通辽市洪金机械制造有限责任公司 | Biomass gear mould blade pellet press |
| CN103120914A (en) * | 2013-01-24 | 2013-05-29 | 通辽市洪金机械制造有限责任公司 | Biomass tooth mould pellet press |
| CN109173933A (en) * | 2018-11-09 | 2019-01-11 | 高翔 | A kind of ring mold structure of the bicyclic mould double-roller granulator of external tooth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140709 |
|
| RGAV | Abandon patent right to avoid regrant |