CN102793054B

CN102793054B - Double-screw extruder for preparing textured fiber protein

Info

Publication number: CN102793054B
Application number: CN201210308489.XA
Authority: CN
Inventors: 江旭海; 徐庆磊
Original assignee: ZHEJIANG BAICHUAN FOOD CO Ltd
Current assignee: Baichuan Biotechnology Co ltd
Priority date: 2012-08-27
Filing date: 2012-08-27
Publication date: 2014-04-16
Anticipated expiration: 2032-08-27
Also published as: CN102793054A

Abstract

The invention discloses a double-screw extruder, which comprises a shell and double screws which are arranged in the shell in parallel in the same direction, wherein a preheating region, a hydration region, a curing region and a filament forming region are arranged in the advance direction of the screws in sequence; the screws in the preheating region are single-end equidistant coarse pitch thread groups; the screws in the hydration region are single-end equidistant second largest pitch thread groups; the screws in the curing region are single-end equidistant second smallest pitch thread groups; the screws in the filament forming region are single-end equidistant small pitch thread groups; the coarse pitch thread groups, the second largest pitch thread groups, the second smallest pitch thread groups and the small pitch thread groups are arranged in sequence according to the pitch sizes of the thread groups of the thread groups; supercharging regions are arranged on the screws at the hydration region and the curing region; and the length-diameter ratio of the screws is 22-28. The invention further provides the double-screw extruder for fully opening and curing soybean meal protein molecules to generate a structure with muscle fibers.

Description

A kind of double screw extruder for the preparation of wire-drawing protein

Technical field

The present invention relates to food processing field, relate in particular to a kind of double screw extruder for the preparation of soybean wire-drawing protein.

Background technology

In prior art, production textured soybean protein or wire-drawing protein mainly adopt double screw extruder, its operation principle is to adopt twin-screw cocurrent and parallel to extrude, the twin-feed spiral of different lead and forward and reverse kneading block are socketed to multiple key core axle by internal spline to be connected and to combine, reach certain compression ratio, by low temperature soy meal THE ADIABATIC SHEAR IN aquation under the state of high temperature, high pressure, complete opening and recombinating of Harmonic Protein Molecular Chains, generation has the soy protein products of institutional framework, i.e. textured soybean protein or wire-drawing protein.

As Chinese patent literature CN102058011A discloses a kind of screw-rod structure of preparing the double screw extruder of wire-drawing protein for the high temperature degreasing dregs of rice, described screw rod is full engagement same-directional flat twin-screw, by several screwing elements and kneading block, formed, be divided into delivery area, melting zone and metering San Ge functional areas, homogenization zone, guarantee that filling coefficient of abrasives and the premixed delivery area of material are comprised of single head spiral and kneading block, to increase, mix, the melting zone of homogeneous and shearing function is comprised of kneading block and fluting spiral, to realize quantitatively, the metering homogenization zone of metering is comprised of twin-feed spiral and double end cone spiral, described screw rod is socketed multiple key core by screwing element and kneading block by internal spline and forms.The kneading block arranging in above-mentioned screw extruder is formed according to certain stagger arrangement angle and stagger arrangement directional combination by several kneading disks, it is a kind of conventional shearing original paper, except shear action, described kneading block has also played the effect of supercharging simultaneously, rotation by described kneading block can promote local pressure, and then promotes aquation and the slaking of material.

The screw rod of above-mentioned double screw extruder is disposed with delivery area along direction of propulsion, melting zone and metering San Ge functional areas, homogenization zone, at each region division kneading block and multi-form screwing element, material is carried out to aquation and maturation process, but because above-mentioned screw-rod structure is only provided with three functional areas, and the aquation to material and maturing process all carry out at melting zone, the process of dregs of beans is not carried out to refinement, therefore just cause dregs of beans protein molecule fully not open and slaking, and then make most of protein molecule fully not open and become silk, but still with the form of institutional framework, exist, the albumen preparing does not have fibre structure, reconstitution rate is low, tenacity and poor flexibility, beany flavor is residual overweight.

Summary of the invention

Technical problem to be solved by this invention is that the screw-rod structure of prior art does not carry out refinement to the process of dregs of beans, therefore just cause dregs of beans protein molecule fully not open and slaking, and then most of protein molecule is still existed with the form of institutional framework and do not become silk, the residual overweight problem of albumen beany flavor preparing, and then provide one can make dregs of beans protein molecule fully open and slaking, generate the double screw extruder that there is meat fiber state and have good tenacity, elasticity, chewiness.

The technical scheme of double screw extruder of the present invention is:

A kind of double screw extruder, comprising: housing and be arranged on the corotating twin-screw in described housing, and described screw rod is disposed with along the direction of propulsion of himself:

Preheating zone, the screw rod of described preheating zone is the equidistant steep-pitch thread group of single head;

Hydration zone, the screw rod of described hydration zone is the equidistant inferior steep-pitch thread group of single head;

Slaking district, the screw rod in described slaking district is the equidistant inferior fine pitch thread set of single head;

Cheng Siqu, the screw rod of described Cheng Siqu is the equidistant fine pitch thread set of single head;

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group;

Hydration zone and slaking district at described screw rod are provided with supercharging device;

The draw ratio of described screw rod is 22-28.

Gap between described screw flight external diameter and described inner walls is 0.5-1mm.

Described supercharging device comprises and setting gradually along the direction of propulsion of screw rod:

Build pressure ring, described in build pressure ring and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring equals described screw flight internal diameter, described in build pressure ring outside wall surface be hydraulically smooth surface;

Blocking material ring, described blocking material ring is nested to be built in the outside wall surface of pressure ring described in being fixed on, and the external diameter of described blocking material ring equals described screw flight external diameter.

Described outside wall surface of building pressure ring and blocking material ring is hydraulically smooth surface.

Intersection in described preheating zone and hydration zone is provided with supercharging device, be arranged on the outer wall of blocking material ring of the supercharging device of described preheating zone and hydration zone intersection and offer at least three backflashes, two bottom surfaces that described backflash is parallel to the axial direction of described blocking material ring and runs through described blocking material ring arrange.

The width of described backflash equal hydration zone time steep-pitch thread group pitch 1/4.

The axial length of the supercharging device of described preheating zone and hydration zone is 3/5-3/4 with the ratio of the pitch of described steep-pitch thread group.

The axial length of the supercharging device in described slaking district is 1-1.5 with the ratio of the pitch of described fine pitch thread set.

Described steep-pitch thread group is 2-2.6 with the ratio of the pitch of described fine pitch thread set.

Hydration zone and slaking district at described screw rod are provided with 3 supercharging devices, and one of them is arranged on the intersection in described hydration zone and slaking district, and two other is separately positioned on middle part and the afterbody in described slaking district.

The screw rod of described preheating zone comprises at least 8 steep-pitch threads and at least one supercharging device;

The screw rod of described hydration zone is connected with at least 9 steep-pitch threads, at least 1 hydration zone supercharging device successively along direction of propulsion;

The screw rod in described slaking district is connected with at least 5 fine pitch screw threads, at least 1 slaking district supercharging device, at least 5 fine pitch screw threads, at least 1 slaking district supercharging device, at least 5 fine pitch screw threads successively along direction of propulsion;

Described fine pitch thread set comprises at least 10 fine pitch screw threads.

The ratio range of described preheating zone length and described screw rod total length is 1/4-1/3;

The ratio of described hydration zone length and described screw rod total length is 1/5-1/4;

The ratio of described slaking section length and described screw rod total length is 1/4-1/3;

The ratio of described one-tenth silk section length and described screw rod total length is 1/6-1/5.

The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/40-1/30;

The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/50-1/40;

The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60-1/50;

The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/70-1/60.

The rotating speed of described screw rod is 400-600r/min.

The present invention compared with prior art tool has the following advantages:

(1) double screw extruder of the present invention, the draw ratio that described screw rod is set is 22-28, and described screw rod is arranged to preheating zone, hydration zone, Si Ge functional areas, He Chengsi district, slaking district, when guaranteeing residence time of raw material, also the process of dregs of beans has been carried out to refinement, in the application, on four functional areas, the setting of helical pitch is successively decreasing according to the filling coefficient of abrasives of difference in functionality district spiral, thereby make material build pressure four times by four functional areas time-divisions, both met the performance change that each functional areas complete material, while guaranteeing again that each functional areas pressure increases progressively, material smoothness advances to relief port, preheating zone is to guarantee that material evenly mixes with water by the object of maximum pitch screw, be both material in hydration zone abundant aquation, for several districts of end fully build pressure, provide enough material fillings again, hydration zone, slaking district, Cheng Siqu thread pitch dwindle successively, thereby play the effect of building pressure, in order to guarantee aquation, the slaking effect in hydration zone and slaking district, in described hydration zone and slaking district, be provided with supercharging device, at Cheng Siqu, do not re-use supercharging device, Shi Gai district constant pressure, allow material pass through the stop of long period and to be carded to chain structure at Cheng Siqu, make mould relax release to material, make product obtain by appearance after extrusion die release, not exploding after neat fiber, obtain the wire-drawing protein of surfacing.

(2) double screw extruder of the present invention, the described supercharging device of setting comprise along the direction of propulsion of screw rod, set gradually build pressure ring and blocking material ring, wherein said blocking material ring is nested to be built in the outside wall surface of pressure ring described in being fixed on.Described in the application's setting, build pressure ring and be fixedly connected with described screw coaxial, described in build pressure ring external diameter equal described screw flight internal diameter; Because described outside wall surface of building pressure ring is hydraulically smooth surface, when building pressure ring surface described in arriving under the impetus of material at screw flight, can be at the described surface sediment of building pressure ring, while is due to the barrier effect of described blocking material ring, thereby increased the pressure of building pressure ring surf zone, played the effect of building pressure.Compared with the kneading block using in prior art, supercharging device described in the application no longer arranges shearing original paper, no longer described material is sheared, in prior art, use kneading block to shear, while making pressure part, easily cause dregs of beans protein molecule to shear in different interval repeating, thereby cause material to be difficult to into silk, the wire-drawing protein forming is difficult to into silk, supercharging device in the present invention has avoided the dregs of beans protein molecule that uses kneading block to cause in different intervals, to repeat the problem of shearing, make material easily become silk, the wire-drawing protein forming has meat fibre structure, there is good tenacity and elasticity.

(3) double screw extruder of the present invention, discharging opening place and hydration zone intersection in described preheating zone are provided with supercharging device, on the outer wall of the blocking material ring of described supercharging device, offer at least three backflashes, material arrives behind hydration zone by described supercharging device, because the pitch of hydration zone is less, pressure is larger, and partial material meeting under the effect of pressure again be got back to preheating zone by described backflash and mix with charging, thereby has effectively promoted the abundant mixing of material.

(4) double screw extruder of the present invention, arranges the axial length of supercharging device of described preheating zone and hydration zone and the ratio of the pitch of described steep-pitch thread group is 3/5-3/4; The axial length of the supercharging device in described slaking district is 1-1.5 with the ratio of the pitch of described fine pitch thread set.When the object arranging is like this to guarantee that described supercharging device is built pressure effect, can also guarantee that material advances to end smooth, avoid causing because pressure is excessive follow-up region material to fill situation inhomogeneous, pressure transient.

(5) double screw extruder of the present invention, it is 2-2.6 with the ratio of the pitch of described fine pitch thread set that described steep-pitch thread group is set.Reason is, if this ratio setting is excessive, easily causes equipment capacity too low, and each functional areas pressure is excessive, and raw material is slaking too, and mould cannot relax release, and then makes product coking or explosion; And arrange too small, can cause again building press too low, it is too fast that material is carried in machine chamber, the time of staying is too short, fully slaking.

(6) double screw extruder of the present invention, is provided with 3 supercharging devices in hydration zone and the slaking district of described screw rod, and one of them is arranged on the intersection in discharging opening place and the slaking district of described hydration zone, and two other is arranged in described slaking district.The supercharging device that is arranged on the discharging opening place of described hydration zone has played the effect of supercharging to the material of described hydration zone, the supercharging device in two other slaking district is for the pressure of building in slaking district.Thereby the pressure that guarantees regional is suitable for aquation and the slaking of material.

(7) double screw extruder of the present invention, the rotating speed that described screw rod is set is 400-600r/min.When guaranteeing that each district completes material aquation, slaking, one-tenth silk function, also guaranteed the production capacity of equipment, the production capacity of described screw apparatus is 2-3 times of same category of device in prior art.

Accompanying drawing explanation

For content of the present invention is more easily understood, the present invention is further detailed content of the present invention in connection with the drawings and specific embodiments:

Fig. 1 is the structural representation of double screw extruder of the present invention;

Fig. 2 is the supercharging device structural representation that double screw extruder of the present invention is provided with backflash;

Fig. 3 is double screw extruder supercharging device structural representation of the present invention;

Fig. 4 is the double screw extruder structural representation that middle part, slaking of the present invention district and afterbody are provided with supercharging device.

Wherein, Reference numeral is:

1-preheating zone, 2-hydration zone, 3-slaking district, 4-Cheng Si district, 5-supercharging device, 6-blocking material ring, 7-builds pressure ring, 8-backflash.

The specific embodiment

Below the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of the specific embodiment.

embodiment 1

As shown in Figure 1, be a kind of double screw extruder described in the present embodiment, it comprises corotating twin-screw, described screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district; Gap 0.5mm between described screw flight external diameter and described inner walls.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/4, described steep-pitch thread group comprises 10 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/40, and described preheating zone 1 heating-up temperature is set as 60 ℃.

Along screw rod direction of propulsion, after described preheating zone 1, be provided with described hydration zone 2, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, the ratio of described hydration zone 2 length and described screw rod total length is 1/4; The screw rod of described hydration zone 2 is connected with the supercharging device 5 of 11 steep-pitch threads and 1 hydration zone 2 successively along direction of propulsion; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/50; The axial length of the supercharging device 5 of described hydration zone 2 is 1.5 with the ratio of the pitch of described steep-pitch thread group; Described hydration zone 2 heating-up temperatures are set as 100 ℃.

Along screw rod direction of propulsion, after described slaking district 3 is positioned at hydration zone 2, the screw rod in described slaking district 3 is the equidistant inferior fine pitch thread set of single head; The screw rod in described slaking district 3 is connected with 5 and 5 the fine pitch screw threads of supercharging device in 5,5 the fine pitch screw threads of supercharging device in 5 fine pitch screw threads, 1 slaking

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 3/10; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60; Along screw rod direction of propulsion, the axial length of described Liang Ge slaking district 3 supercharging devices 5 is respectively 1.5 with the ratio of the pitch of described fine pitch thread set; Described slaking district 3 heating-up temperatures are set as 140 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described fine pitch thread set comprises 14 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 1/5; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/70; Described Cheng Siqu 4 heating-up temperatures are set as 160 ℃.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.75 with the ratio of the pitch of described fine pitch thread set; The draw ratio of described screw rod is 25, and the diameter of described screw rod is 57mm.

In the present embodiment, be arranged on described slaking district 3 and described hydration zone 2 supercharging device 5 structure as shown in Figure 2, described supercharging device 5 comprises and setting gradually along the direction of propulsion of screw rod:

Build pressure ring 7, described in build pressure ring 7 and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring 7 equals described screw flight internal diameter;

Blocking material ring 6, builds in the outside wall surface of pressure ring 7 described in nested being fixed on of described blocking material ring 6, and the external diameter of described blocking material ring 6 equals described screw flight external diameter; Described outside wall surface of building pressure ring 7 and blocking material ring 6 is hydraulically smooth surface.

The motor speed 1450r/min of double screw extruder of the present invention, reduction box speed reducing ratio is Sj2 ∽ Sj3.7, twin shaft rotating speed (Vz), value is 400r/min, the cast aluminium heat block of each district's machine boring outsourcing 1-2 piece 2KW, vertical lower adds four high speed axial flow cooling blowers again, by automatic temperature-controlled instrument, guarantees that each section machine boring temperature constant is in setting range ± 1 ℃.By improving twin shaft rotating speed and compression ratio, can reduce the outside heating power of machine boring, reach the cost-saving and object energy.

Embodiment 2

The structure of a kind of double screw extruder described in the present embodiment as shown in Figure 1, comprises corotating twin-screw, and screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district; Gap 0.5mm between described screw flight external diameter and described inner walls.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, and the screw rod of described preheating zone 1 is connected with 8 steep-pitch threads and a supercharging device 5 successively along direction of propulsion; The ratio range of described preheating zone 1 length and described screw rod total length is 1/4, and the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/40.Described supercharging device 5 is arranged on the intersection of described preheating zone 1 and hydration zone 2, and be positioned at the end of described preheating zone 1 along screw rod direction of propulsion, its structure as shown in Figure 3, described supercharging device 5 comprise along the direction of propulsion of screw rod, set gradually build pressure ring 7 and blocking material ring 6, described in build pressure ring 7 and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring 7 equals described screw flight internal diameter, described in build pressure ring 7 outside wall surface be hydraulically smooth surface; Described in nested being fixed on of described blocking material ring 6, build in the outside wall surface of pressure ring 7, the external diameter of described blocking material ring 6 equals described screw flight external diameter; Be arranged on the outer wall of described preheating zone 1 and the blocking material ring 6 of the supercharging device 5 of hydration zone 2 intersections and offer at least three backflashes 8, two bottom surfaces that described backflash 8 is parallel to the axial direction of described blocking material ring 6 and runs through described blocking material ring 6 arrange.Being arranged on described preheating zone 1 is 2 with the ratio of the axial length of the supercharging device 5 of hydration zone 2 intersections and the pitch of described steep-pitch thread group; The width of described backflash 8 equals 1/4 of hydration zone 2 helical pitch; Described preheating zone 1 heating-up temperature is set as 70 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/4.The screw rod of described hydration zone 2 is connected with 11 steep-pitch threads and 1 supercharging device 5 successively along direction of propulsion, and the supercharging device 5 of described hydration zone 2 is positioned at the afterbody of hydration zone 2; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/48; The axial length of the supercharging device 5 of described hydration zone 2 is 1 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 105 ℃.

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/3; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/50; The axial length of two supercharging devices 5 in described slaking district 3 is 5/6 with the ratio of the pitch of described fine pitch thread set; Described slaking district 3 heating-up temperatures are set as 145 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 10 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 1/6.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60.Described Cheng Siqu 4 heating-up temperatures are set as 165 ℃.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.5 with the ratio of the pitch of described fine pitch thread set; The draw ratio of described screw rod is 22.The diameter of described screw rod is 85mm.

The structure of the supercharging device 5 arranging on the screw rod in hydration zone 2 and slaking district 3 in the present embodiment as shown in Figure 2, comprise along the direction of propulsion of screw rod, set gradually build pressure ring 7 and blocking material ring 6, described in build pressure ring 7 and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring 7 equals described screw flight internal diameter; Described in nested being fixed on of described blocking material ring 6, build in the outside wall surface of pressure ring 7, the external diameter of described blocking material ring 6 equals described screw flight external diameter; Described outside wall surface of building pressure ring 7 and blocking material ring 6 is hydraulically smooth surface.

The motor speed 1450r/min of double screw extruder of the present invention, reduction box speed reducing ratio is Sj2 ∽ Sj3.7, the rotating speed of screw rod is 450r/min, the cast aluminium heat block of each district's machine boring outsourcing 1-2 piece 2KW, vertical lower adds four high speed axial flow cooling blowers again, by automatic temperature-controlled instrument, guarantees that each section machine boring temperature constant is in setting range ± 1 ℃.By improving twin shaft rotating speed and compression ratio, can reduce the outside heating power of machine boring, reach the cost-saving and object energy.

Embodiment 3

As shown in Figure 1, it comprises corotating twin-screw to the structure of a kind of double screw extruder described in the present embodiment, and described screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district.Gap between described screw flight external diameter and described machine boring inwall is 0.8mm.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, and the screw rod of described preheating zone 1 is connected with 9 steep-pitch threads and a supercharging device 5 successively along direction of propulsion; The ratio range of described preheating zone 1 length and described screw rod total length is 1/3, and the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/30.Described supercharging device 5 is arranged on the intersection of described preheating zone 1 and hydration zone 2, and be positioned at the end of described preheating zone 1 along screw rod direction of propulsion, its structure as shown in Figure 3, described supercharging device 5 comprise along the direction of propulsion of screw rod, set gradually build pressure ring 7 and blocking material ring 6, described in build pressure ring 7 and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring 7 equals described screw flight internal diameter, described in build pressure ring 7 outside wall surface be hydraulically smooth surface; Described in nested being fixed on of described blocking material ring 6, build in the outside wall surface of pressure ring 7, the external diameter of described blocking material ring 6 equals described screw flight external diameter; Be arranged on the outer wall of described preheating zone 1 and the blocking material ring 6 of the supercharging device 5 of hydration zone 2 intersections and offer at least three backflashes 8, two bottom surfaces that described backflash 8 is parallel to the axial direction of described blocking material ring 6 and runs through described blocking material ring 6 arrange.Being arranged on described preheating zone 1 is 1 with the ratio of the axial length of the supercharging device 5 of hydration zone 2 intersections and the pitch of described steep-pitch thread group; The width of described backflash 8 equals 1/4 of hydration zone 2 helical pitch; Described preheating zone 1 heating-up temperature is set as 70 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/5.The screw rod of described hydration zone 2 is connected with 9 steep-pitch threads and 1 hydration zone 2 supercharging device 5 successively along direction of propulsion, and the supercharging device 5 of described hydration zone 2 is positioned at the afterbody of hydration zone 2, i.e. the intersection in hydration zone and slaking district; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/48; The axial length of the supercharging device 5 of described hydration zone 2 is 3/5 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 110 ℃.

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/3; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/50; The axial length of two supercharging devices 5 in described slaking district 3 is 5/6 with the ratio of the pitch of described fine pitch thread set.Described slaking district 3 heating-up temperatures are set as 150 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 10 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 2/15.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/75.Described Cheng Siqu 4 heating-up temperatures are set as 170 ℃.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 2.5 with the ratio of the pitch of described fine pitch thread set, is compression ratio.The draw ratio of described screw rod is 28, and the diameter of described screw rod is 115mm.

On the screw rod in described hydration zone 2 and slaking district 3, be provided with supercharging device 5, as shown in Figure 2, comprise along the direction of propulsion of screw rod, set gradually build pressure ring 7 and blocking material ring 6, described in build pressure ring 7 and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring 7 equals described screw flight internal diameter; Described in nested being fixed on of described blocking material ring 6, build in the outside wall surface of pressure ring 7, the external diameter of described blocking material ring 6 equals described screw flight external diameter; Described outside wall surface of building pressure ring 7 and blocking material ring 6 is hydraulically smooth surface.

The motor speed 1450r/min of double screw extruder of the present invention, reduction box speed reducing ratio is Sj2.5 ∽ Sj3.7, twin shaft rotating speed (Vz), value is 500r/min, the cast aluminium heat block of each district's machine boring outsourcing 1-2 piece 2KW, vertical lower adds four high speed axial flow cooling blowers again, by automatic temperature-controlled instrument, guarantees that each section machine boring temperature constant is in setting range ± 1 ℃.By improving twin shaft rotating speed and compression ratio, can reduce the outside heating power of machine boring, reach the cost-saving and object energy.

Embodiment 4

As shown in Figure 1, be the embodiment of a kind of double screw extruder of the present invention, it comprises same-directional flat twin-screw, described screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district.Gap 1mm between described screw flight external diameter and described inner walls.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/4, comprise 9 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/40.Intersection in described preheating zone 1 with described hydration zone 2, and the end that is positioned at described preheating zone 1 is provided with 1 supercharging device 5, as shown in Figure 3, described supercharging device 5 is by building pressure ring 7 and blocking material ring 6 forms, the described pressure ring 7 of building is hollow tubular, fix with screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described blocking material ring 6 is hollow tubular, the nested outer wall of building pressure ring 7 that is arranged on of described blocking material ring 6, described blocking material ring 6 is provided with 3 backflashes 8, described backflash 8 is parallel to the axial direction of blocking material ring 6, and two bottom surfaces running through described blocking material ring 6 arrange, described preheating zone 1 is 1 with the ratio of the axial length of the supercharging device 5 of the intersection of hydration zone 2 and the pitch of described steep-pitch thread group, the width of described backflash 8 equals hydration zone 2 helical pitch 1/4.Described preheating zone 1 heating-up temperature is set as 75 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/4.The screw rod of described hydration zone 2 is connected with the supercharging device 5 of 9 steep-pitch threads and 2 hydration zones 2 successively along direction of propulsion, the supercharging device 5 of described hydration zone 2 is positioned at the intersection in hydration zone 2 and slaking district 3; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/42; The axial length of the supercharging device 5 of described hydration zone 2 is 3/4 with the ratio of the pitch of described steep-pitch thread group.Described preheating zone 1 heating-up temperature is set as 115 ℃.

Along screw rod direction of propulsion, after described slaking district 3 is positioned at hydration zone 2, the screw rod in described slaking district 3 is the equidistant inferior fine pitch thread set of single head; The screw rod in described slaking district 3 is connected with 5 and 4 the fine pitch screw threads of supercharging device in 5,4 the fine pitch screw threads of supercharging device in 4 fine pitch screw threads, 1 slaking district 3,2 slaking districts 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/4; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/56; The axial length of two supercharging devices 5 in described slaking district 3 is 2/3 with the ratio of the pitch of described fine pitch thread set.Described slaking district 3 heating-up temperatures are set as 155 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 15 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 1/4.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60.Described slaking district 3 heating-up temperatures are set as 175 ℃.

On the screw rod in described hydration zone 2 and slaking district 3, be provided with supercharging device 5, as shown in Figure 2, described supercharging device 5 comprises: build pressure ring 7 and blocking material ring 6, described building on the nested lateral wall that is arranged on described screw rod of body that pressure ring 7 is hollow, the described pressure ring 7 of building is fixedly connected with described screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described in build pressure ring 7 external diameter equal described screw flight root footpath, described in build pressure ring 7 outside wall surface be hydraulically smooth surface.The body that described blocking material ring 6 is hollow, builds in the outside wall surface of pressure ring 7 described in nested being fixed on of described blocking material ring 6, and the external diameter of described blocking material ring 6 equals described screw flight external diameter, and the outside wall surface of described blocking material ring 6 is hydraulically smooth surface.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.5 with the ratio of the pitch of described fine pitch thread set, is compression ratio.The draw ratio of described screw rod is 28.The diameter of described screw rod is 65mm.

The motor speed 1450r/min of double screw extruder of the present invention, reduction box speed reducing ratio is Sj2 ∽ Sj3.7), twin shaft rotating speed (Vz), value is 550r/min, the cast aluminium heat block of each district's machine boring outsourcing 1-2 piece 2KW, vertical lower adds four high speed axial flow cooling blowers again, by automatic temperature-controlled instrument, guarantees that each section machine boring temperature constant is in setting range ± 1 ℃.By improving twin shaft rotating speed and compression ratio, can reduce the outside heating power of machine boring, reach the cost-saving and object energy.

Embodiment 5

As shown in Figure 1, be the embodiment of a kind of double screw extruder of the present invention, it comprises same-directional flat twin-screw, described screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district.Gap 0.7mm between described screw flight external diameter and described inner walls.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/5, comprise 8 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/43.The discharging opening place of described preheating zone 1 is that preheating zone 1 is provided with 1 supercharging device 5 with the intersection of hydration zone 2, as shown in Figure 3, described supercharging device 5 is by building pressure ring 7 and blocking material ring 6 forms, the described pressure ring 7 of building is hollow tubular, fix with screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described blocking material ring 6 is hollow tubular, the nested outer wall of building pressure ring 7 that is arranged on of described blocking material ring 6, described blocking material ring 6 is provided with 3 backflashes 8, described backflash 8 is parallel to the axial direction of blocking material ring 6, and two bottom surfaces running through described blocking material ring 6 arrange, described preheating zone 1 is 3/5 with the ratio of the axial length of the supercharging device 5 of the intersection of hydration zone 2 and the pitch of described steep-pitch thread group.The width of described backflash 8 equals hydration zone 2 helical pitch 1/4.Described preheating zone 1 heating-up temperature is set as 80 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/3.The screw rod of described hydration zone 2 is connected with 12 steep-pitch threads and 1 hydration zone 2 supercharging device 5 successively along direction of propulsion, and the supercharging device 5 of described hydration zone 2 is positioned at the intersection in 2 discharging opening places, hydration zone and slaking district 3; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/39; The axial length of the supercharging device 5 of described hydration zone 2 is 1 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 125 ℃.

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/4; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/68; Described slaking district 3 along screw rod direction of propulsion, the axial length of supercharging device 5 is 1 with the ratio of the pitch of described fine pitch thread set, described slaking district 3 heating-up temperatures are set as 160 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 13 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 13/60.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60.Described Cheng Siqu 4 heating-up temperatures are set as 185 ℃.

On the screw rod in described preheating zone 1 and hydration zone 2 intersections, hydration zone 2 and slaking district 3 intersections and slaking district 3, be provided with supercharging device 5.As shown in Figure 2, described supercharging device 5 comprises: build pressure ring 7 and blocking material ring 6, described building on the nested lateral wall that is arranged on described screw rod of body that pressure ring 7 is hollow, the described pressure ring 7 of building is fixedly connected with described screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, the described external diameter of building pressure ring 7 equals described screw flight root footpath, described in build pressure ring 7 outside wall surface be hydraulically smooth surface.The body that described blocking material ring 6 is hollow, builds in the outside wall surface of pressure ring 7 described in nested being fixed on of described blocking material ring 6, and the external diameter of described blocking material ring 6 equals described screw flight external diameter, and the outside wall surface of described blocking material ring 6 is hydraulically smooth surface.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.4 with the ratio of the pitch of described fine pitch thread set, is compression ratio.The draw ratio of described screw rod is 24.The diameter of described screw rod is 90mm.

The motor speed 1450r/min of double screw extruder of the present invention, reduction box speed reducing ratio is Sj2 ∽ 2.5, twin shaft rotating speed (Vz), value is 600r/min, the cast aluminium heat block of each district's machine boring outsourcing 1-2 piece 2KW, vertical lower adds four high speed axial flow cooling blowers again, by automatic temperature-controlled instrument, guarantees that each section machine boring temperature constant is in setting range ± 1 ℃.By improving twin shaft rotating speed and compression ratio, can reduce the outside heating power of machine boring, reach the cost-saving and object energy.

Embodiment 6

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/3, comprise 10 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/36.The discharging opening place of described preheating zone 1 is that preheating zone 1 is provided with 2 supercharging devices 5 with the intersection of hydration zone 2, as shown in Figure 3, described supercharging device 5 is by building pressure ring 7 and blocking material ring 6 forms, the described pressure ring 7 of building is hollow tubular, fix with screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described blocking material ring 6 is hollow tubular, the nested outer wall of building pressure ring 7 that is arranged on of described blocking material ring 6, described blocking material ring 6 is provided with 3 backflashes 8, described backflash 8 is parallel to the axial direction of blocking material ring 6, and two bottom surfaces running through described blocking material ring 6 arrange, 1 discharging opening place, described preheating zone is 1 with the ratio of the axial length of the supercharging device 5 of the intersection of hydration zone 2 and the pitch of described steep-pitch thread group.The width of described backflash 8 equals hydration zone 2 helical pitch 1/4.Described preheating zone 1 heating-up temperature is set as 80 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/5.The screw rod of described hydration zone 2 is connected with 9 steep-pitch threads and 1 hydration zone 2 supercharging device 5 successively along direction of propulsion, and the supercharging device 5 of described hydration zone 2 is positioned at the intersection in 2 discharging opening places, hydration zone and slaking district 3; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/48; The axial length of the supercharging device 5 of described hydration zone 2 is 3/5 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 125 ℃.

Along screw rod direction of propulsion, after described slaking district 3 is positioned at hydration zone 2, the screw rod in described slaking district 3 is the equidistant inferior fine pitch thread set of single head; The screw rod in described slaking district 3 is connected with 5 and 5 the fine pitch screw threads of supercharging device in 5,6 the fine pitch screw threads of supercharging device in 5 fine pitch screw threads, 1 slaking

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/3; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/54; Described slaking district 3 along screw rod direction of propulsion, the axial length of supercharging device 5 is 1 with the ratio of the pitch of described fine pitch thread set, described slaking district 3 heating-up temperatures are set as 160 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 8 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 2/15.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/60.Described Cheng Siqu 4 heating-up temperatures are set as 185 ℃.

On the screw rod in described hydration zone 2 and slaking district 3, be provided with supercharging device 5.As shown in Figure 2, described supercharging device 5 comprises: build pressure ring 7 and blocking material ring 6, described building on the nested lateral wall that is arranged on described screw rod of body that pressure ring 7 is hollow, the described pressure ring 7 of building is fixedly connected with described screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, the described external diameter of building pressure ring 7 equals described screw flight root footpath, described in build pressure ring 7 outside wall surface be hydraulically smooth surface.The body that described blocking material ring 6 is hollow, builds in the outside wall surface of pressure ring 7 described in nested being fixed on of described blocking material ring 6, and the external diameter of described blocking material ring 6 equals described screw flight external diameter, and the outside wall surface of described blocking material ring 6 is hydraulically smooth surface.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.67 with the ratio of the pitch of described fine pitch thread set, is compression ratio.The draw ratio of described screw rod is 22.The diameter of described screw rod is 100mm.

Embodiment 7

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/3, comprise 10 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/36.The discharging opening place of described preheating zone 1 is that preheating zone 1 is provided with 2 supercharging devices 5 with hydration zone 2 intersections, as shown in Figure 3, described supercharging device 5 is by building pressure ring 7 and blocking material ring 6 forms, the described pressure ring 7 of building is hollow tubular, fix with screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described blocking material ring 6 is hollow tubular, the nested outer wall of building pressure ring 7 that is arranged on of described blocking material ring 6, described blocking material ring 6 is provided with 3 backflashes 8, described backflash 8 is parallel to the axial direction of blocking material ring 6, and two bottom surfaces running through described blocking material ring 6 arrange, 1 discharging opening place, described preheating zone is 1 with the ratio of the axial length of the supercharging device 5 of the intersection of hydration zone 2 and the pitch of described steep-pitch thread group.The width of described backflash 8 equals hydration zone 2 helical pitch 1/4.Described preheating zone 1 heating-up temperature is set as 80 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 5/24.The screw rod of described hydration zone 2 is connected with the supercharging device 5 of 8 steep-pitch threads and 1 hydration zone 2 successively along direction of propulsion, the supercharging device 5 of described hydration zone 2 is positioned at the intersection in 2 discharging opening places, hydration zone and slaking district 3; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/48; The axial length of the supercharging device 5 of described hydration zone 2 is 2 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 125 ℃.

Along screw rod direction of propulsion, after described slaking district 3 is positioned at hydration zone 2, the screw rod in described slaking district 3 is the equidistant inferior fine pitch thread set of single head; The screw rod in described slaking district 3 is connected with 5 and 7 the fine pitch screw threads of supercharging device in 5,4 the fine pitch screw threads of supercharging device in 5 fine pitch screw threads, 1 slaking

district

3,1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/3; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/54; Described slaking district 3 along screw rod direction of propulsion, the axial length of supercharging device 5 is followed successively by 3/4 and 5/4 with the ratio of the pitch of described fine pitch thread set along screw rod direction of propulsion, described slaking district 3 heating-up temperatures are set as 160 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 8 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 1/8.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/64.Described Cheng Siqu 4 heating-up temperatures are set as 185 ℃.

Wherein, the sequence of the pitch of described thread set size is: > fine pitch thread set > fine pitch thread set of > steep-pitch thread group of steep-pitch thread group; Described steep-pitch thread group is 1.67 with the ratio of the pitch of described fine pitch thread set, is compression ratio.The draw ratio of described screw rod is 27.The diameter of described screw rod is 45mm.

Embodiment 8

As shown in Figure 4, be the embodiment of a kind of double screw extruder of the present invention, it comprises same-directional flat twin-screw, described screw rod is disposed with along the direction of propulsion of himself: preheating zone 1, hydration zone 2,3 He Chengsi districts 4, slaking district.Gap 0.7mm between described screw flight external diameter and described inner walls.

Described preheating zone 1 is positioned at along first section of screw rod direction of propulsion, the screw rod of described preheating zone 1 is the equidistant steep-pitch thread group of single head, the ratio range of described preheating zone 1 length and described screw rod total length is 1/3, comprise 10 steep-pitch threads, the ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/33.The discharging opening place of described preheating zone 1 is that preheating zone 1 is provided with 1 supercharging device 5 with the intersection of hydration zone 2, as shown in Figure 3, described supercharging device 5 is by building pressure ring 7 and blocking material ring 6 forms, the described pressure ring 7 of building is hollow tubular, fix with screw coaxial, the described pressure ring 7 of building is connected with spiral by mandrel, described blocking material ring 6 is hollow tubular, the nested outer wall of building pressure ring 7 that is arranged on of described blocking material ring 6, described blocking material ring 6 is provided with 3 backflashes 8, described backflash 8 is parallel to the axial direction of blocking material ring 6, and two bottom surfaces running through described blocking material ring 6 arrange, 1 discharging opening place, described preheating zone is 1 with the ratio of the axial length of the supercharging device 5 of the intersection of hydration zone 2 and the pitch of described steep-pitch thread group.The width of described backflash 8 equals hydration zone 2 helical pitch 1/4.Described preheating zone 1 heating-up temperature is set as 80 ℃.

Along screw rod direction of propulsion, after described hydration zone 2 is positioned at preheating zone 1, the screw rod of described hydration zone 2 is the equidistant inferior steep-pitch thread group of single head, and the ratio of described hydration zone 2 length and described screw rod total length is 1/5.The screw rod of described hydration zone 2 is connected with 9 steep-pitch threads and 1 hydration zone 2 supercharging device 5 successively along direction of propulsion, and the supercharging device 5 of described hydration zone 2 is positioned at the intersection in hydration zone 2 and slaking district 3; The ratio of the pitch of described steep-pitch thread group and described screw rod total length is 1/48; The axial length of the supercharging device 5 of described hydration zone 2 is 3/5 with the ratio of the pitch of described steep-pitch thread group.Described hydration zone 2 heating-up temperatures are set as 125 ℃.

Along screw rod direction of propulsion, after described slaking district 3 is positioned at hydration zone 2, the screw rod in described slaking district 3 is the equidistant inferior fine pitch thread set of single head; The screw rod in described slaking district 3 is connected with 5,8 the fine pitch screw threads of supercharging device in 7 fine pitch screw threads, 1 slaking district 3, the supercharging device 5 in 1 slaking district 3 successively along direction of propulsion; The ratio of described slaking district 3 length and described screw rod total length is 1/3; The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/54; Described slaking district 3 along screw rod direction of propulsion, the axial length of supercharging device 5 is 1.5 with the ratio of the pitch of described fine pitch thread set, described slaking district 3 heating-up temperatures are set as 160 ℃.

After described Cheng Siqu 4 is positioned at slaking district 3, the screw rod of described Cheng Siqu 4 is the equidistant fine pitch thread set of single head; Described Cheng Siqu 4, described fine pitch thread set comprises 10 fine pitch screw threads; The ratio of described Cheng Siqu 4 length and described screw rod total length is 2/15.The ratio of the pitch of described fine pitch thread set and described screw rod total length is 1/75.Described Cheng Siqu 4 heating-up temperatures are set as 185 ℃.

The course of work of double screw extruder of the present invention is as follows, and described dregs of beans protein enters described preheating zone 1, and at a certain temperature, through rotational shear and the extruding of steep-pitch thread group, described dregs of beans evenly mixes and pushes hydration zone 2 to water.

Under the rotation of screw rod promotes, described dregs of beans moves forward, and in preheating zone, 1 discharging opening place runs into supercharging device 5, and the pressure ring 7 of building of described supercharging device 5 is made pressure, and extruding dregs of beans, is fully integrated with water the dregs of beans in preheating zone 1.Under the obstruction of the blocking material ring 6 of supercharging device 5, the extruding that part dregs of beans is deposited in preheating zone 1 and continues to be subject to building pressure ring 7 is subject to follow-uply without the extruding of building the new dregs of beans that pressure ring 7 pushes, promoting and then moving forward simultaneously, another part dregs of beans enters described hydration zone 2 by the backflash 8 of the supercharging device 5 of 1 discharging opening place, preheating zone and hydration zone 2 intersections, wherein part dregs of beans enters hydration zone 2 and can not via the rotation of inferior king bolt, promote at once, and then be deposited near of supercharging device 5, being deposited near dregs of beans supercharging device 5 enters preheating zone 1 by the backflash 8 of supercharging device 5 and carries out aquation again, do not pile up near the dregs of beans of supercharging device 5 under the rotational shear and squeezing action of the inferior steep-pitch thread group of hydration zone 2, dregs of beans continues to move forward, run into the supercharging device 5 at 2 discharging opening places, hydration zone, under the extruding of building pressure ring 7 of supercharging device 5, the abundant aquation of dregs of beans, described dregs of beans is subject to follow-up dregs of beans extruding and promotes to move forward the blocking material ring 6 that runs into supercharging device 5, described part dregs of beans stops moving forward, be deposited in together, play certain pressure effect of building, extruding dregs of beans, make dregs of beans protein molecule open modification, wherein the described dregs of beans of part supercharging device 5 the inhibition of blocking material ring 6 under reflux, dregs of beans is rotational shear and the extruding of warp time steep-pitch thread group again, make dregs of beans protein open fully modification, reach the abundant aquation of dregs of beans, make material aquation more even, more abundant.

Under the rotation of screw rod promotes, in hydration zone 2, dregs of beans is when the supercharging device 5 of the intersection in 2 discharging opening places, hydration zone and slaking district 3, part dregs of beans continues to move forward by described supercharging device 5, enter described slaking district 3, under the rotational shear and squeezing action of inferior fine pitch thread set, dregs of beans modification slaking, dregs of beans moves forward under the rotation of inferior fine pitch screw thread promotes, when running into supercharging device 5, dregs of beans is subject to the squeezing action of building pressure ring 7 of supercharging device 5, owing to building the outer wall of pressure ring 7, be smooth, therefore dregs of beans lacks the power that screw thread rotation promotes forward, the movement of dregs of beans can only be by the promotion of dregs of beans below, therefore dregs of beans moves slowly, a large amount of dregs of beans extruding are deposited in together, increased upwarding pressure perpendicular to screw rod side of dregs of beans, and also increased the dead time of dregs of beans, make dregs of beans protein fully open modification and slaking, the chain structure that simultaneously guarantees the restructuring of dregs of beans protein molecule is not damaged.When dregs of beans runs into the blocking material ring 6 of supercharging device 5, described blocking material ring 6 hinders the movement of part dregs of beans, dregs of beans accretion is at blocking material ring 6 places, when dregs of beans is stacked into a certain degree, dregs of beans backflow is again through rotational shear and the extruding of time fine pitch thread set, and dregs of beans protein is fully opened modification and slaking.Part dregs of beans continues to move forward by the blocking material ring 6 of supercharging device 5 until run into supercharging device 5 in addition, part dregs of beans refluxes through extruding and the obstruction of supercharging device 5 again, rotational shear and the extruding of warp time fine pitch thread set again, make the further modification of dregs of beans and slaking, part continues to be subject to rotational shear and the extruding of time fine pitch thread set by the dregs of beans of supercharging device 5, through the inferior fine pitch thread set of certain length, then enter Cheng Si district 4.

Under the rotation of screw rod promotes, described dregs of beans moves forward, enter described Cheng Siqu 4, dregs of beans by first three district completes slaking, what reach protein molecule opens modification completely, and under the rotary squeezing of the fine pitch thread set of Cheng Siqu 4, dregs of beans protein is carded to chain, arrange restructuring, after extrusion die extruding, obtain the wire-drawing protein of surfacing.

It should be noted that, the corotating twin-screw described in the present invention is a kind of Essential Terms of those skilled in the art, refer to and be arranged in parallel, and two identical screw rods of direction of rotation, and described two screw flights are meshed.

Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments, and the apparent variation of being extended out thus or variation are still among the protection domain in the claims in the present invention.

Claims

1. a double screw extruder, comprising: housing and be arranged on the corotating twin-screw in described housing, it is characterized in that, and described screw rod is disposed with along the direction of propulsion of himself:

Hydration zone and slaking district at described screw rod be provided with supercharging device, and described supercharging device comprises and setting gradually along the direction of propulsion of screw rod:

Build pressure ring, described in build pressure ring and be fixedly connected with described screw coaxial; The described external diameter of building pressure ring equals described screw flight internal diameter;

Blocking material ring, described blocking material ring is nested to be built in the outside wall surface of pressure ring described in being fixed on, and the external diameter of described blocking material ring equals described screw flight external diameter; Described outside wall surface of building pressure ring and blocking material ring is hydraulically smooth surface;

The draw ratio of described screw rod is 22-28:1; Gap between described screw flight external diameter and described inner walls is 0.5-1mm.

2. double screw extruder according to claim 1, it is characterized in that, intersection in described preheating zone and hydration zone is provided with supercharging device, be arranged on the outer wall of blocking material ring of the supercharging device of described preheating zone and hydration zone intersection and offer at least three backflashes, two bottom surfaces that described backflash is parallel to the axial direction of described blocking material ring and runs through described blocking material ring arrange.

3. double screw extruder according to claim 2, is characterized in that, the width of described backflash equal hydration zone time steep-pitch thread group pitch 1/4.

4. double screw extruder according to claim 3, is characterized in that, the axial length of the supercharging device of described preheating zone and hydration zone is 0.6-0.75:1 with the ratio of the pitch of described steep-pitch thread group.

5. double screw extruder according to claim 4, is characterized in that the axial length of supercharging device in described slaking district and the ratio of the pitch of described fine pitch thread set are 1-1.5:1.

6. double screw extruder according to claim 5, is characterized in that, described steep-pitch thread group is 2-2.6:1 with the ratio of the pitch of described fine pitch thread set.

7. according to the double screw extruder described in claim 1-6 any one, it is characterized in that, hydration zone and slaking district at described screw rod are provided with 3 supercharging devices, and one of them is arranged on the afterbody of described hydration zone, and two other is separately positioned on middle part and the afterbody in described slaking district.

8. according to the double screw extruder described in claim 1-6 any one, it is characterized in that,

The screw rod of described preheating zone is connected with at least 8 steep-pitch threads and at least one supercharging device successively along direction of propulsion;

The screw rod of described hydration zone is connected with at least 9 steep-pitch threads, at least 1 supercharging device successively along direction of propulsion;

The screw rod in described slaking district is connected with at least 5 fine pitch screw threads, at least 1 supercharging device, at least 5 fine pitch screw threads, at least 1 supercharging device, at least 5 fine pitch screw threads successively along direction of propulsion;

Described fine pitch thread set comprises at least 10 fine pitch screw threads.

9. double screw extruder according to claim 7, is characterized in that, the ratio range of described preheating zone length and described screw rod total length is 1/4-1/3;

10. double screw extruder according to claim 8, is characterized in that, the ratio range of described preheating zone length and described screw rod total length is 1/4-1/3;

11. according to the double screw extruder described in claim 9 or 10, it is characterized in that,

12. double screw extruders according to claim 11, is characterized in that, the rotating speed of described screw rod is 400-600r/min.