Standard hammer piece type disintegrator is the type that processes feed of low albumen adult fish to often be chosen, if machine collect blame fish, block eye fish, catfish or carp feed. No matter make bead, or Peng is changed, this type feed asks raw material smashs commonly granuality is 500 M or above, allow particle size distribution wider. Use standard hammer piece type disintegrator machines this type feed to have treatment adaptability life of strong, disintegrator grows and efficiency is advanced advantage. However, increase of demand quickly as feed of grain of special type aquatic product, the requirement is used smash specially technology, namely grinding (Fine Grinding) and small smash (exceed grinding, namely U Ltra Fine Grinding) technology. Grinding and small smash the technology can be used at machining shrimp, eel, kind fish, prelarva and view and admire piscine feed.
Standard hammer piece of type disintegrator sift a bag horn to regard 360 ° , aperture generally for 3. 00mm, raw material smashs granuality is less than 840 M for the grain of 80% commonly. Hammer piece type grinding machine (Fine Grinding Hammer Miu) sift a bag horn to be for 180 ° , aperture 2. 00mm (some manufacturers product is 1. 20mm) , raw material smashs granuality is less than 400 M for the grain of 80% commonly. Small disintegrator (Pulveriser) raw material smashs granuality is less than 250 M for the grain of 80% commonly or the following, and particle size distribution is narrower. Small smash systematic raw material smashs the grain that granuality has 80% commonly is less than 100 M. Particle size distribution is a crucial parameter that smash, because,this is hammer piece of type disintegrator smash particle size distribution is common wider, report all is less than some to secure a value for the grain of 80% in afore-mentioned particle size distribution. General, particle size distribution is narrower, action is jumped over at the treatment parameter such as the quantity of heat of grain, intensity of pressure even. Granuality can raise suppress and Peng consistently to change feed quality. Raw material of demand of some fish feed smashs granuality is less than 500 M for the grain of 90% . Raw material of demand of feed of the shrimp on the world smashs granuality is less than 250 M for the grain of 95% . Raw material of demand of common eel feed smashs granuality is less than 180 M for the grain of 98% . Raw material of a lot of prelarva feed demand smash granuality is less than 100 M for the grain of 95% . Smash when the raw material that compares feed demand granuality and effective raw material smash when granuality, must analyse particle size distribution.
Of feedstuff of 2 aquatic product small smash
Use small smash should be opposite according to every kinds of fish the requirement of feed. Raw material is small smash the digestive process of granuality and fish, grow environment, photograph feed method and feed nutrition composition to concern. For example, the bodily form of shrimp is small, enteron is short, cannot digest completely to big grain, because this asks feedstuff is small,smash. The treatment that some eel feed uses a convention, cast feed a method, feed figuration is dough. Eel getting is photographed inside feed, among them big grain injures eel mouth, make eel although the head is whole sell not easily in the market however. Accordingly the raw material of eel grain feed smashs granuality cannot too big. Feedstuff of decision aquatic product smashs granuality, should consult expert of aquatic product dietetics when necessary.
Constituent of aquatic product feed and raw material smash the requirement that granuality must satisfy the downstream treatment that make bead. Recommend commonly feed granulator or Peng changes the pink of machine to expect granuality is less than diameter of Kong Zhi of 1/ 3 model for the grain of 99% , jam in order to prevent modular opening. Be less than when diameter of bead of aquatic product feed 1. When 0mm, recommend pink to expect granuality is less than diameter of bead of 1/ 5 feed for the grain of 80% commonly. For example, diameter of bead of aquatic product feed is 500 M, requirement pink expects granuality is less than 100 M for the grain of 80% . This experience is only the requirement according to grain feed machining, simpler. Should decide aquatic product feedstuff smashs granuality, should consider the nutrient demand of this kind of fish and its located growth period above all.
3 hammer piece concussion linear velocity and generation caloric concern
Business of treatment of aquatic product feed uses special weight piece type grinding can be encountered when machine and small disintegrator with standard hammer piece the question with type same disintegrator, more serious even. Grinding and small smash the high protein of the high temperature of generation and aquatic product feedstuff, tall adipose mix, cause raw material to be in smash accumulate in systematic component. Because compositive characteristic smashs harder,also have some of feedstuff, be like soja crust and the fish meal of all sorts of different constituent.
Hammer piece type disintegrator and small disintegrator use concussion to be able to attack broken grain, reduce size. Standard hammer piece the hammer of type disintegrator piece concussion linear velocity (hammer piece extreme linear velocity) it is 5800m/ Min about. Hammer piece type grinding the hammer of machine piece concussion linear velocity is 6400 M/ Min. The hammer of small disintegrator piece concussion linear velocity is 7, 620- 10, 000 M/ Min.
Hammer piece concussion linear velocity is bigger, business is bigger, waste time can be more, smash room generation quantity of heat is bigger. Smash a large number of quantity of heat of the room can reduce disintegrator crop, waste those who cause component is energy, excessive wear away and injure feedstuff. Accordingly, smash the system must be adopted cogent and effective medicinal powder hot method. Fan has this effect, at the same time can eduction pink body. The advantage of small disintegrator of type suction wind is to use the air that accumulates roughly to take away smash a large number of quantity of heat of the process.
Air current of negative pressure of area of 4 screen mesh classifications technology
Smash efficiency and hammer piece the percussion frequency of big to raw material grain and fine grained from smash the rate of room eduction is concerned, fine grained should be deducted return smash the is more than granuality requirement grain of the room. Standard hammer piece area of type disintegrator use screen mesh creates negative pressure (suck wind) system, rotate in order to overcome hammer piece the powerful air current that cause, make fine grained from smash room eduction controls dust. Hammer piece grinding machine uses formula system of negative pressure of strong air current of screen mesh area, quicken powdery makings eduction. Hammer piece the negative pressure system of machine compares type grinding standard hammer piece type disintegrator needs 20% cubage breath more (M3/ Min) . Small disintegrator of type suction wind does not have screen mesh, use air completely to classification upstream principle. Fine grained is very fast eduction smashs room.
Bigger grain stops amid, rate of going from place to place is slower, concussion probability rises, be pounded to smash ceaselessly. Finally, concussion carries force and air current to carried force to overcome grain momentum force, grain subsequently eduction.
Force of momentum of small disintegrator of type suction wind (M Omentum Force) related to grain quality, carry force and grain watch area and density ratio to show a share relevant. General, grain size is smaller, the specific value that its express area and quality is greater, the flotage in air current increases. Use air current to classification to natural and organic feedstuff, efficiency is inferior. Because the character such as the density of different type feedstuff is different,this is, if some of lipoid content has the surface to accumulate very big, quality,very small, appearance grows and thin character, this type raw material can pass air current to classification like fine grained device is carried. Use one class air current to classification the small disintegrator of device, hammer piece somes concussion linear velocity is small, the efficiency that machines aquatic product feed accordingly is a few lower. Although 2 class air current classifications plant efficiency is taller, but can cause feed constituent adulteration.
Do not advocate will smash more than the raw material that granuality asks is returned smash system. These are difficult smash stock can be in smash room accumulate, those who cause disintegrator part is excessive wear away.
The design of 5 transfer unit
Feedstuff transfer unit is small smash and exceed small smash the main problem of Lv of the take an examination in systematic design. Duct course design must assure to be carried in all turning raw material expedite, did not qualify area. Powdery makings is collected implement bottom should be designed the belt is tangential the Sha Kelong form of the entrance. Among them eddy current rate is minor, pile up with reducing plane as far as possible.
Proposal treatment does not use the filter of the core that bear strain when feed of tall fat aquatic product. Use mechanical orgnaization to clear filter core surface, although conduce to filter working normally, but most filter core does not have this orgnaization. The proposal designs a brake that take energy of life, can leave quickly shut, with convenient cleanness. The feedstuff conveyor with good performance will reduce equipment to safeguard, make treatment operation simple.
6 raw material smash the relation of granuality, power consumption and crop
Smash granuality requirement and power consumption are very significant also in disintegrator design. Compare hammer piece type disintegrator and the crop that small disintegrator machines feed of distinct size aquatic product: Standard hammer piece type disintegrator, screen mesh aperture is 3. 00mm, raw material smashs granuality is less than 840 M for the grain of 80% , crop is 61. 7kg/ KW? H. Hammer piece type grinding machine, screen mesh aperture is 1. 2mm, raw material smashs granuality is less than 390 M for the grain of 80% , crop is 24. 6 Kg/ KW? H. Grinding of type suction wind machine, raw material smashs granuality is less than 250 M for the grain of 95% , crop is 12. 4kg/ KW? H. Suck wind type small disintegrator, raw material smashs granuality is less than 177 M for the grain of 98% , crop is 6. 1kg/ KW? H. Because differ,the composition of feed of phyletic aquatic product and raw material quality have a difference, above is general quantitative concept only quite. According to different aquatic product feedstuff, of these a few kinds of disintegrator smash treatment circumstance and spare parts wear away to also differ.
Business of treatment of aquatic product feed has a variety of raw material to smash the technology can offer an alternative. The nutrition that must analyse feed of fish of avery kind of asks, smash in order to decide parameter. Grinding and small smash can raise aquatic product feed to change quality of coefficient, grain, control an environment to pollute, to treatment the operation is brought convenient and reduce what Peng spends plane part to wear away speed. However, raw material smashs granuality is reduced a little, finished cost will rise significantly. Because this must consider the economy that smash, excessive smash wasteful.
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