A kind of bulking machine of producing high curing extruded products
Technical field
The utility model relates to a kind of production equipment of extruded product, especially relates to a kind of bulking machine of producing high curing extruded products.
Background technology
In the prior art, in order to obtain the extruded product of high gelatinization degree, material at first makes water and steam carry out modified by quality-adjusting device, material contacts infiltration fully with water, steam in quality-adjusting device, through after a while, material obtains certain pre-gelatinization, and generally between 35~50%, the material after the pre-gelatinization enters in the screw extruder and pushes the gelatinization degree of material more at this moment.
Chinese invention patent Shen Qing Publication specification, publication number is CN101057702A, open day is on October 24th, 2007, disclose a kind of expanded bulking machine of high starch materials that is used for, comprised feed cavity and extrusion chamber, feed cavity is connected an end of extrusion chamber, discharging mode is connected the other end of extrusion chamber, the front portion of feed cavity is provided with charging aperture, is provided with end to end screw rotor in feed cavity and the extrusion chamber, and the external diameter of each section screw rod all equates.Material enters feed cavity from charging aperture, extrusion chamber moves to the discharging mode direction in the rotation extruding lower edge of screw rod, in this process, material is subjected to the powerful mechanical energy effect of screw rod, material temperature, pressure promote gradually, arrive the discharging nib before, the gelatinization degree of material reaches high state, from the nib of discharging mode, be extruded out subsequently, obtain the extruding grain products of high gelatinization degree through the cutting knife cutting.
China's utility model patent specification; notification number is CN2437152Y, and the day for announcing is July 4 calendar year 2001, discloses a kind of expanded granulator; the steam regulation of texture, conditioning of texture device is connected with the outlet of drawing-in device by pipeline, and the steam regulation of texture, conditioning of texture device is furnished with radially steam inlet and filler.For regulating swelling temperature, add cooling water or steam in the interlayer of expanded tube.
The sectional area that can by material be filled of above bulking machine between from the charging aperture to the discharging mode all is to diminish gradually or constant, the input of material energy in whole maturing process is mainly derived from two parts: the one, and modified by steam and water in quality-adjusting device makes material obtain certain precuring; The 2nd, by slaking fully, this part energy relies on the input of mechanical energy to material in extruder.The degree of the precuring that material obtains in quality-adjusting device in the prior art is not very high, generally only reach 35~50%, if just require the gelatinization degree of final extrudate to reach 100%, its complementary energy input that material slaking needs mainly depends on mechanical energy, and the input dependence of mechanical energy is in the main motor of extruder.So after the power of bulking machine master motor is determined, want to make material to reach high gelatinization degree, the production capacity of bulking machine will be lower.
The utility model content
For solving the problem that the material bulking machine tool can digest greatly, production capacity is low in the prior art, the utility model provides a kind of reduction can import food, feed extrusion machinery, improves a kind of bulking machine of producing high curing extruded products of heat energy input.
For solving above technical problem, the technical solution of the utility model is, a kind of bulking machine of producing high curing extruded products is provided, comprise feed cavity and extrusion chamber, feed cavity is connected an end of extrusion chamber, the front portion of feed cavity is provided with charging aperture, be provided with end to end screw rotor in feed cavity and the extrusion chamber, the gabarit shape of screw rotor is suitable with the shape of place cavity respectively, described extrusion chamber front portion is provided with enlarged diameter section, one end of enlarged diameter section amplifies section by taper and is connected with feed cavity, the other end is connected with the afterbody of extrusion chamber by the tapered reduction section, and the periphery wall that section and/or enlarged diameter section are amplified in described taper is provided with the vapor interface that communicates with its inner chamber.
The beneficial effects of the utility model are, section is amplified in taper and enlarged diameter section constitutes amplification slaking district, by in amplification slaking district vapor interface being set, can add steam easily in material, amplify the slaking district and can make material stop the long time, make material obtain further slaking.
As improvement of the present utility model, the spiral of described major diameter screw rod is interrupted setting around screw shaft.Be interrupted that the conveying capacity that spiral can reduce this section being set, make material stop the regular hour, obtain degree of depth slaking in this zone.
As further improvement of the utility model, be provided with pressure rings between tapered reduction screw rod and the afterbody screw rod.Because the existence of pressure rings, material enters afterbody slaking district by amplification slaking district and becomes not too easy, makes material can set up certain pressure in amplification slaking zone, is beneficial to the slaking of material.
As another improvement of the present utility model, also be provided with the vapor interface that communicates with feed cavity inside on the periphery wall at feed cavity rear portion.Can be by this vapor interface in feed cavity promptly to material input steam.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 charging aperture, 2 feed cavity, 3a feed cavity vapor interface, the extrusion chamber vapor interface is amplified in the 3b taper, 3c major diameter extrusion chamber vapor interface, and section is amplified in 4 tapers, 6 enlarged diameter sections, 7 tapered reduction sections, 8 afterbody slaking sections, 9 discharging modes, 10 cutting knifes, 11 feed worms, screw rod, 13 major diameter screw rods, 14 tapered reduction screw rods are amplified in 12 tapers, 15 pressure rings, 16 afterbody screw rods.
The specific embodiment
As shown in Figure 1, a kind of bulking machine of producing high curing extruded products of the present utility model, comprise feed cavity 2 and extrusion chamber, feed cavity 2 is connected an end of extrusion chamber, drawing mechanism is connected the other end of extrusion chamber, be provided with end to end screw rotor in feed cavity 2 and the extrusion chamber, the front portion of feed cavity 2 is provided with charging aperture 1, and the periphery wall at feed cavity 2 rear portions is provided with the vapor interface that communicates with feed cavity inside.Extrusion chamber comprises taper amplification section 4, enlarged diameter section 6, tapered reduction section 7 and the afterbody slaking section 8 that connects successively, is respectively taper with the corresponding screw rod of each section of extrusion chamber and amplifies screw rod 12, major diameter screw rod 13, tapered reduction screw rod 14 and afterbody screw rod 16.The spiral of major diameter screw rod 13 is interrupted setting around screw shaft, and promptly spiral is not continuous, and some position disconnects.Be provided with pressure rings 15 between tapered reduction screw rod 14 and the afterbody screw rod 16.Be equipped with the vapor interface that communicates with extrusion chamber on the periphery wall of taper amplification section and enlarged diameter section.
Bulking machine mainly is divided into three zones: feeding zone, amplification slaking district and afterbody crush zone, feeding zone is made up of feed cavity 2 and feed worm 11, amplify the slaking district and comprise taper amplification section and enlarged diameter section, the extrusion chamber that connects a tapered reduction afterwards, connect the afterbody crush zone at last, the afterbody crush zone comprises the afterbody slaking section 8 and the afterbody screw rod 16 of extrusion chamber.The extrusion chamber afterbody is equipped with discharging mode 9, and cutting knife 10 is installed behind the discharging mode 9, and cutting knife 10 is driven by cutting motor.
In process of production, material through certain precuring at first enters bulking machine by the charging aperture 1 of feed cavity 2, rotation by feed worm 11 moves to discharging mode 9 directions, and material arrives the feed cavity rear portion, adds a certain amount of steam by the material of feed cavity vapor interface 3a to this position.
Material enters and amplifies the slaking district then, material amplifies extrusion chamber vapor interface 3b, major diameter extrusion chamber vapor interface 3c in amplification slaking district by taper and further add steam in material, because there is a bigger space in this zone, the spiral of major diameter screw rod 13 is non-continuous structures simultaneously, its conveying capacity is not very strong, so material can stop the regular hour in this zone, and can be full of whole space.Owing to the existence of pressure rings 15, material enters the afterbody crush zone by amplification slaking district and becomes not too easy in addition, and material can be set up certain pressure in amplification slaking zone like this.Material through the sufficiently long time, adds to material and adds under the condition of steam under certain pressure, the further slaking of material meeting, the particularly important is, the input of the energy of material slaking is mainly derived from relatively cheap heat energy under this operating mode, but not mechanical energy.Material dependence to mechanical energy in the process of whole slaking can diminish like this, can import constant situation in mechanical energy and improve the mach production capacity of extruding.
Material is after amplifying the further slaking in slaking district, and it is liquid or semi-fluid state, the good fluidity of material, and mechanical resistance is little, has reduced mechanical friction, has saved from the mechanical energy of extruding screw input, has reduced the wearing and tearing of extruding screw and extrusion chamber.This bulking machine is energy-conservation, efficient, can be used for the expanding processing of materials such as grain, feed.