CN116369566B - Twin-screw extrusion puffing equipment and application thereof in improving glutinous rice starch characteristics - Google Patents
Twin-screw extrusion puffing equipment and application thereof in improving glutinous rice starch characteristics Download PDFInfo
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- CN116369566B CN116369566B CN202310653319.3A CN202310653319A CN116369566B CN 116369566 B CN116369566 B CN 116369566B CN 202310653319 A CN202310653319 A CN 202310653319A CN 116369566 B CN116369566 B CN 116369566B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 48
- 230000001007 puffing effect Effects 0.000 title claims abstract description 14
- 229940100486 rice starch Drugs 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000002994 raw material Substances 0.000 claims abstract description 53
- 229920002472 Starch Polymers 0.000 claims abstract description 44
- 235000019698 starch Nutrition 0.000 claims abstract description 44
- 239000008107 starch Substances 0.000 claims abstract description 44
- 238000012216 screening Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 28
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 238000012545 processing Methods 0.000 abstract description 13
- 230000003111 delayed effect Effects 0.000 abstract description 3
- 235000013305 food Nutrition 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 239000000047 product Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 physical Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P30/00—Shaping or working of foodstuffs characterised by the process or apparatus
- A23P30/30—Puffing or expanding
- A23P30/32—Puffing or expanding by pressure release, e.g. explosion puffing; by vacuum treatment
- A23P30/34—Puffing or expanding by pressure release, e.g. explosion puffing; by vacuum treatment by extrusion-expansion
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Cereal-Derived Products (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to the technical field of food processing, in particular to double-screw extrusion and puffing equipment and application thereof in improving the characteristic of glutinous rice starch, wherein the double-screw extrusion and puffing equipment comprises a base, a vertical plate fixedly arranged on the base and a conveying channel arranged on the base, and further comprises: the extrusion conveying mechanism is arranged in the conveying channel and is used for executing extrusion pushing action on starch entering the conveying channel, and a water supply mechanism is arranged on the periphery of the conveying channel; the mounting bracket is fixedly arranged on one side of the vertical plate, which faces the conveying channel, and the raw material screening mechanism is arranged on the mounting bracket and can perform screening action on starch raw materials, in actual processing, the mixed treatment work of the raw materials and water is not needed, the problem that layering difference occurs in the water content of the starch due to the time delayed in the feeding process is prevented, and the gelatinization property of the starch can be effectively improved.
Description
Technical Field
The invention relates to the technical field of food processing, in particular to double-screw extrusion puffing equipment and application thereof in improving the characteristics of glutinous rice starch.
Background
Starch is an important industrial raw material in addition to being a major component of human grains. Based on natural starch, physical, chemical or enzymatic treatment can be utilized to improve the properties of the starch and expand the application range, thereby changing the properties of the starch to different extents.
At present, pregelatinized starch is used in industry, and has the excellent characteristics of convenient use, environmental protection, high economic benefit and the like. As a purely natural green plant adhesive, the adhesive has wide market prospect in industries such as food, medical treatment, agriculture, metal casting, papermaking, petroleum, building materials and the like, and has great significance in the development of a plurality of industries by combining the requirements of different industries for preparation and application.
Today, in gelatinization of starch, it is common to mix the starch with a certain amount of water, then introduce it into an extruder, and discharge it through the die orifice of the extruder by shearing of the screw and high temperature and high pressure treatment, so that the starch is instantaneously swollen. After the starch and water are mixed, a process of introducing the starch and water into the extruder is involved, and in the process, a certain time is required to be delayed in a feeding process of the mixed product, so that the moisture content in the product is easily layered due to gravity and other factors (vibration during mechanical working), and further, the materials entering the extruder have differences in different feeding stages, so that the gelatinization property of the starch is influenced.
Disclosure of Invention
The invention aims to provide double-screw extrusion puffing equipment and application thereof in improving the characteristics of glutinous rice starch so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
double screw extrusion equipment, be in including base, fixed mounting riser on the base and locate conveying channel on the base still includes: the extrusion conveying mechanism is arranged in the conveying channel and used for executing extrusion pushing action on starch entering the conveying channel, a water supply mechanism is arranged on the periphery of the conveying channel, and the water supply mechanism is connected with the extrusion conveying mechanism and can pump clean water into the conveying channel; the mounting bracket is fixedly arranged on one side of the vertical plate, which faces the conveying channel, and a raw material screening mechanism is arranged on the mounting bracket and can perform screening action on starch raw materials and conduct the screened starch raw materials into the conveying channel.
As a further scheme of the invention: the extrusion conveying mechanism comprises two screws rotatably arranged in the conveying channel, the two screws are connected with a driving device arranged on the base, and a first hopper is arranged at the upper part of the conveying channel; wherein, two screw rods intermesh, and one of them screw rod with water supply mechanism is connected.
As still further aspects of the invention: the water supply mechanism comprises a reciprocating transverse moving assembly arranged on the base and connected with the screw rod, and a plurality of groups of sealing drawing and placing assemblies arranged on the periphery of the conveying channel, and the sealing drawing and placing assemblies are matched with the reciprocating transverse moving assembly.
As still further aspects of the invention: the base is fixedly provided with two guide plates, and the reciprocating transverse assembly comprises a transverse moving plate which is in sliding fit with the two guide plates, a frame body fixedly arranged on the transverse moving plate and a disc rotatably arranged on the base; the frame body is movably provided with a plurality of pulleys matched with the sealing drawing and placing assembly through a plurality of connecting rods, a push-pull rod is arranged between the disc and the transverse moving plate, and two ends of the push-pull rod are respectively hinged with the eccentric position of the disc and one side of the transverse moving plate facing the disc; the conveying channel is further provided with a partition board in a sealing mode, the partition board divides the conveying channel into a transmission cavity and a squeezing cavity, the screw is connected with a bevel gear set arranged in the transmission cavity, and the bevel gear set is connected with a rotating shaft of the disc.
As still further aspects of the invention: the sealing and drawing-out assembly comprises a second one-way valve which is arranged on the outer wall of the conveying channel and communicated with the extruding and conveying cavity, a cylinder connected with the second one-way valve, and a piston disc which is arranged in the cylinder in a sealing sliding manner, and the outer wall of the cylinder is also provided with a first one-way valve which is connected with a water source; the piston disc is fixedly connected with a transverse plate through a connecting plate, and the transverse plate is connected with two groups of elastic telescopic structures arranged on the outer wall of the conveying channel.
As still further aspects of the invention: the elastic telescopic structure comprises a fixed seat fixed on the outer wall of the conveying channel, a supporting rod arranged in the fixed seat in a sliding manner and a cylindrical spring arranged in the fixed seat, and one end of the supporting rod, far away from the conveying channel, is fixed with the transverse plate; the cylindrical spring is sleeved on the periphery of the supporting rod, a boss is fixed at one end of the supporting rod, which is far away from the transverse plate, a parting surface is formed at the joint of the boss and the supporting rod, and two ends of the cylindrical spring are respectively connected with the parting surface and the inner wall of the fixing seat; wherein, the diaphragm deviates from one side of drum is fixed with the drive plate, just the drive plate has seted up logical groove, logical groove with the pulley reaches the axis of rotation adaptation of pulley, just the drive plate orientation one side of pulley is equipped with the inclined plane, it installs the locating part to lead to the inslot rotation, the locating part orientation one side of pulley with the inclined plane is in the coplanar, the locating part with be equipped with the torsional spring between the drive plate, just the tip of locating part be formed with the bulge of inclined plane butt.
As still further aspects of the invention: the raw material screening mechanism comprises a blanking slide carriage which is fixed on the mounting frame and is obliquely arranged, and a screen drum which is rotatably arranged on the blanking slide carriage and is parallel to the blanking slide carriage, and a driving motor is also arranged on the blanking slide carriage, and the output end of the driving motor is connected with the rotating shaft of the screen drum; the outside of the screen cylinder is provided with a feeding structure, the inside of the screen cylinder is provided with a swinging structure, the swinging structure is triggered when the driving motor drives the screen cylinder to rotate, and stirring action is carried out on starch entering the screen cylinder from the feeding structure.
As still further aspects of the invention: the swing structure comprises a rotating shaft which is rotatably arranged on the blanking slide carriage, extends into the screen cylinder and is in sealed and rotary connection with the screen cylinder, and a swing plate which is fixed on the outer wall of the rotating shaft, wherein a plurality of tooth-shaped bulges are equidistantly arranged on one side of the swing plate, which is far away from the rotating shaft; the rotating shaft is coincident with the central axis of the two sieve barrels, an incomplete toothed ring is fixed at one end of the sieve barrel far away from the driving motor, and the incomplete toothed ring is matched with a gear rotatably arranged on the blanking slide carriage; the rotating shaft of the gear is connected with the rotating shaft through a second transmission belt, one end, far away from the driving motor, of the rotating shaft is fixedly provided with a swinging rod, and an elastic piece is arranged between the swinging rod and a protruding block fixed on the blanking slide carriage.
As still further aspects of the invention: the feeding structure comprises a circular ring fixedly installed on the blanking slide carriage and in sealing and rotating connection with the screen cylinder and a second hopper fixed on the outer wall of the circular ring, wherein the circular ring is hollow, and a plurality of feeding through holes matched with the circular ring are formed in the outer wall of the screen cylinder along the circumference at equal intervals.
The double-screw extrusion puffing equipment is applied to improving the characteristics of glutinous rice starch.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, when in use, the raw materials are added into the raw material screening mechanism by staff, the raw material screening mechanism can screen the raw materials, the agglomerated raw materials are prevented from entering the conveying channel to influence the uniformity of mixing of the raw materials and the clear water in the conveying channel, when in operation, the extrusion conveying mechanism drives the water supply mechanism to move, the water supply mechanism pumps the clear water into the conveying channel from each side part of the conveying channel, under the action of the extrusion conveying mechanism, the starch and the clear water are mixed, so that the starch is conveyed, sheared, mixed and heated in the conveying channel, cured under the action of high temperature and high pressure, and finally extruded out of the conveying channel through the die to achieve the effect of extrusion and puffing treatment.
Drawings
FIG. 1 is a schematic view of an embodiment of a twin screw extrusion apparatus;
FIG. 2 is a schematic view of a twin screw extrusion apparatus at another angle;
FIG. 3 is a partial cross-sectional view of one embodiment of a twin screw extrusion apparatus;
FIG. 4 is a schematic view of a structure of an embodiment of a twin screw extrusion apparatus at another angle;
FIG. 5 is an enlarged view of the structure at A in FIG. 3;
FIG. 6 is an enlarged view of the structure at B in FIG. 3;
FIG. 7 is an exploded view of the structure of the reciprocating traversing assembly in one embodiment of a twin screw extrusion apparatus;
FIG. 8 is an exploded view of the seal extraction assembly of one embodiment of a twin screw extrusion apparatus;
fig. 9 is an enlarged view of the structure at C in fig. 8;
fig. 10 is an exploded view of the structure of the raw material screening mechanism in one embodiment of the twin screw extrusion apparatus.
In the figure: 1. a base; 101. a guide plate; 2. a vertical plate; 3. a driving device; 4. a conveying channel; 401. a screw; 402. a partition plate; 403. a first hopper; 404. a mold; 5. a cylinder; 501. a first one-way valve; 502. a second one-way valve; 6. a piston disc; 7. a connecting plate; 8. a cross plate; 9. a fixing seat; 10. a support rod; 1001. a boss; 11. a cylindrical spring; 12. a drive plate; 1201. an inclined surface; 1202. a through groove; 13. a frame; 1301. a connecting rod; 14. a pulley; 15. a transverse moving plate; 16. a disc; 17. a push-pull rod; 18. a bevel gear set; 19. a transmission shaft; 20. a first belt; 21. a limiting piece; 2101. a protruding portion; 22. a mounting frame; 23. discharging a chute; 2301. a protruding block; 2302. a guide wheel; 24. a screen drum; 2401. a feed port; 2402. a cover body; 25. a drive motor; 26. an incomplete ring gear; 27. a rotating shaft; 2701. a swinging rod; 28. a swinging plate; 29. a gear; 30. a second belt; 31. an elastic sheet; 32. a circular ring; 3201. and a second hopper.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 10, in an embodiment of the present invention, a twin-screw extrusion and puffing apparatus includes a base 1, a vertical plate 2 fixedly installed on the base 1, and a conveying channel 4 provided on the base 1, and further includes: the extrusion conveying mechanism is arranged in the conveying channel 4, and a water supply mechanism connected with the extrusion conveying mechanism is arranged on the periphery of the conveying channel 4; the mounting bracket 22 is fixedly arranged on one side of the vertical plate 2 facing the conveying channel 4, and is provided with a raw material screening mechanism, and the raw material screening mechanism can perform screening action on the starch raw materials and conduct the screened starch raw materials into the conveying channel 4.
It should be noted that, an electrothermal assembly (not shown in the figure, using the prior art) is further disposed on the base 1, and the electrothermal assembly is used for heating the conveying channel 4 to ensure that the temperature in the conveying channel 4 reaches the temperature required by the processing; when the device is used, a worker adds starch raw materials into the raw material screening mechanism, the raw material screening mechanism can screen the raw materials, the agglomerated raw materials are prevented from entering the conveying channel 4 to influence the uniformity of mixing of the raw materials and clear water in the conveying channel 4, when the extrusion conveying mechanism works, the water supply mechanism is driven to move, the clear water is pumped into the conveying channel 4 from each side part of the conveying channel 4 by the water supply mechanism, and under the action of the extrusion conveying mechanism, the starch and the clear water are mixed, so that the starch is conveyed, sheared, mixed and heated in the conveying channel 4, cured under the action of high temperature and high pressure, and finally extruded out of the conveying channel 4 through the die 404 (detachably arranged at the discharge end of the conveying channel 4) to achieve the extrusion puffing treatment effect; it should be noted that in actual production, usually, the staff inputs the starch raw material into a special stirring device in advance, then adds water into the stirring device, and after the mixing treatment of the starch and the clear water by the stirring device is finished, conveys the obtained product into the conveying channel 4, and compared with the invention (in the invention, the mixing of the starch and the clear water is carried out in the conveying channel 4), the invention has the following advantages:
firstly, the mixing effect of the double screw extrusion process is utilized, so that the mixing treatment work of raw materials and water is not needed in advance in the actual processing, and the processing flow is effectively simplified;
secondly, as starch and water are mixed in advance, the obtained product needs to be conveyed into the conveying channel 4, and the conveying process needs to be delayed for a certain time, so that the water content in the product is easily layered due to gravity and other factors (vibration during mechanical work), and further, the materials entering the conveying channel 4 have differences in different stages of conveying.
In addition, before starch gets into in the conveying channel 4, the raw materials screening mechanism can carry out screening treatment to the starch raw materials, prevents that the raw materials of caking from getting into in the conveying channel 4, influences the mixing effect of clear water and raw materials, and then causes the influence to final gelatinization effect, provides effective guarantee for the quality of final product.
Referring to fig. 3 again, the extruding and conveying mechanism includes two screws 401 rotatably installed inside the conveying channel 4, and the two screws 401 are connected with a driving device 3 installed on the base 1, and a first hopper 403 is disposed at the upper portion of the conveying channel 4. Two screws 401 are engaged with each other, and one screw 401 is connected to the water supply mechanism.
During processing, the raw materials processed by the raw material screening mechanism enter the conveying channel 4 through the first hopper 403, the driving device 3 drives the two screws 401 to synchronously rotate, meanwhile, one screw 401 drives the water supply mechanism to move, the water supply mechanism pumps water into the conveying channel 4, and the rotation of the two screws 401 has a mixing effect on starch and clear water, so that the mixing effect of the double-screw extrusion process is effectively utilized, the mixing treatment work of the raw materials and the water is not needed in advance in actual processing, and the processing flow is effectively simplified.
Referring to fig. 3, 4, 5, 7, 8 and 9, the water supply mechanism includes a reciprocating and traversing assembly mounted on the base 1 and connected to the screw 401, and a plurality of groups of sealing and extracting assemblies disposed on the periphery of the conveying channel 4, and the sealing and extracting assemblies are matched with the reciprocating and traversing assembly.
When the screw 401 rotates, the reciprocating and traversing assembly is driven to move, so that the reciprocating and traversing assembly is matched with a plurality of groups of sealing and extracting assemblies, and in the matching process, the sealing and extracting assemblies firstly extract clean water, and then pump the extracted clean water into the conveying channel 4.
The base 1 is fixedly provided with two guide plates 101, and the reciprocating transverse moving assembly comprises a transverse moving plate 15 which is in sliding fit with the two guide plates 101, a frame 13 fixedly arranged on the transverse moving plate 15 and a disc 16 rotatably arranged on the base 1. A plurality of pulleys 14 matched with the sealing and drawing-out assembly are movably arranged on the frame 13 through a plurality of connecting rods 1301, a push-pull rod 17 is arranged between the disc 16 and the transverse moving plate 15, and two ends of the push-pull rod 17 are respectively hinged with the eccentric position of the disc 16 and one side of the transverse moving plate 15 facing the disc 16; the conveying channel 4 is further provided with a partition plate 402 in a sealing manner, the partition plate 402 divides the conveying channel 4 into a transmission cavity and a squeezing cavity, the screw 401 is connected with a bevel gear set 18 arranged in the transmission cavity, and the bevel gear set 18 is connected with a rotating shaft of the disc 16.
In detail, a transmission shaft 19 is rotatably mounted on the base 1, the transmission shaft 19 extends into the transmission cavity and is rotatably connected with the conveying channel 4, and the transmission shaft 19 is also connected with the rotation shaft of the disc 16 through a first transmission belt 20; next, the bevel gear set 18 includes a first bevel gear fixedly mounted on the screw 401 and a second bevel gear fixedly mounted on one end of the transmission shaft 19 in the transmission chamber, and the second bevel gear is meshed with the first bevel gear.
When the driving device 3 drives the screw 401 to rotate, the screw 401 can drive the transmission shaft 19 to rotate through the bevel gear set 18, and the transmission shaft 19 drives the disc 16 to rotate through the first transmission belt 20; in the first half of the rotation process of the disc 16, under the guiding action of the two guide plates 101 on the traverse plates 15, the disc 16 can push the traverse plates 15 to slide on the two guide plates 101 along the length direction of the base 1 towards the transmission shaft 19 through the push-pull rods 17, and correspondingly, the frame 13 moves along with the traverse plates 15, so that the pulley 14 is matched with the sealing and drawing assembly, and the sealing and drawing assembly is driven to draw clear water and pump the drawn clear water into the extrusion cavity; during the second half of the rotation, the disc 16 pulls the traversing plate 15 to slide on the two guide plates 101 away from the transmission shaft 19 through the push-pull rod 17, so that the pulley 14 is reset; in this way, the sealing and pumping assembly can automatically pump water into the squeezing cavity during the rotation process of the screw 401.
The sealing and drawing and discharging assembly comprises a second one-way valve 502 which is arranged on the outer wall of the conveying channel 4 and communicated with the extruding and conveying cavity, a cylinder 5 which is connected with the second one-way valve 502, and a piston disc 6 which is arranged in the cylinder 5 in a sealing sliding manner, wherein the outer wall of the cylinder 5 is also provided with a first one-way valve 501 which is connected with a water source. The piston disc 6 is fixedly connected with a transverse plate 8 through a connecting plate 7, and the transverse plate 8 is connected with two groups of elastic telescopic structures arranged on the outer wall of the conveying channel 4.
The elastic telescopic structure comprises a fixed seat 9 fixed on the outer wall of the conveying channel 4, a supporting rod 10 arranged in the fixed seat 9 in a sliding manner and a cylindrical spring 11 arranged in the fixed seat 9, and one end, away from the conveying channel 4, of the supporting rod 10 is fixed with the transverse plate 8; the cylindrical spring 11 is sleeved on the periphery of the supporting rod 10, a boss 1001 is fixed at one end of the supporting rod 10 away from the transverse plate 8, a parting surface is formed at the joint of the boss 1001 and the supporting rod 10, and two ends of the cylindrical spring 11 are respectively connected with the parting surface and the inner wall of the fixed seat 9; wherein, the diaphragm 8 deviates from one side of drum 5 is fixed with drive plate 12, just drive plate 12 has seted up logical groove 1202, logical groove 1202 with pulley 14 and the axis of rotation adaptation of pulley 14, just drive plate 12 orientation one side of pulley 14 is equipped with inclined plane 1201, the locating part 21 is installed in the rotation of logical groove 1202, locating part 21 orientation one side of pulley 14 with inclined plane 1201 is in the coplanar, locating part 21 with be equipped with the torsional spring between the drive plate 12, just the tip of locating part 21 be formed with the bulge 2101 of inclined plane 1201 butt.
In the first half of the rotation process of the disc 16, that is, the traverse plate 15 drives the pulley 14 to move towards the transmission plate 12, the pulley 14 will first contact with the limiting piece 21, with the continuous movement of the traverse plate 15, and the limiting piece 21 cannot rotate due to the arrangement of the protruding part 2101, further, the pulley 14 rolls along the inclined surface 1201 and forces the transmission plate 12 to yield, accordingly, the transmission plate 12 drives the support rod 10 to slide towards the outside of the fixed seat 9 through the traverse plate 8, the cylindrical spring 11 is compressed, and in addition, the traverse plate 8 drives the piston disc 6 to slide away from the transmission channel 4 in the cylinder 5 through the connecting plate 7, so that the first one-way valve 501 is conducted, the second one-way valve 502 is not conducted, and then clean water is extracted into the cylinder 5 through the first one-way valve 501; after the pulley 14 is separated from the inclined surface 1201, the cylindrical spring 11 releases elastic potential energy, so that the supporting rod 10 is quickly retracted into the fixed seat 9, and correspondingly, the piston disc 6 is quickly slid and reset in the cylinder 5, so that the first one-way valve 501 is not conducted, and the second one-way valve 502 is conducted, so that clean water in the cylinder 5 is pumped into the conveying channel 4 at a relatively fast flow rate, the dispersibility of the clean water after being pumped into the conveying channel 4 is ensured, and the uniformity of mixing of starch raw materials and clean water is improved; the pulley 14 moves in the through groove 1202, the pulley 14 contacts with the limiting piece 21 to drive the limiting piece 21 to rotate, the torsion spring deforms, and the torsion spring recovers to deform until the pulley 14 is pulled out of the through groove 1202, so that the limiting piece 21 is driven to reversely rotate and reset, and the pulley 14 can smoothly drive the transmission plate 12 to yield when moving towards the transmission plate 12 in the next rotation process of the pulley 16, so that the piston disc 6 can extract clean water.
Referring to fig. 3, 6 and 10 again, the raw material screening mechanism includes a blanking chute 23 fixed on the mounting frame 22 and arranged obliquely, and a screen drum 24 rotatably mounted on the blanking chute 23 and parallel to the blanking chute 23, and a driving motor 25 is further mounted on the blanking chute 23, and an output end of the driving motor 25 is connected with a rotating shaft of the screen drum 24. The outside of screen drum 24 is equipped with the pan feeding structure, and inside is equipped with the swing structure, the swing structure is in driving motor 25 drives the rotation of screen drum 24 is triggered to the starch that gets into by the pan feeding structure the inside of screen drum 24 is carried out and is stirred the action.
It should be noted that, a plurality of guide wheels 2302 are provided on the inner wall of the blanking chute 23, and the guide wheels 2302 are in rolling fit with the outer wall of the screen drum 24, so as to perform an effective supporting function on the screen drum 24, and ensure the stability of the screen drum 24 in the rotation process.
The swing structure comprises a rotating shaft 27 rotatably installed on the blanking slide carriage 23 and extending into the screen drum 24 and in sealing and rotating connection with the screen drum 24, and a swing plate 28 fixed on the outer wall of the rotating shaft 27, wherein a plurality of tooth-shaped protrusions are equidistantly arranged on one side of the swing plate 28 away from the rotating shaft 27; wherein, the central axis of the rotating shaft 27 and the central axis of the screen drum 24 coincide, one end of the screen drum 24 far away from the driving motor 25 is fixed with an incomplete toothed ring 26, and the incomplete toothed ring 26 is matched with a gear 29 rotatably arranged on the blanking slide 23; the rotation shaft of the gear 29 is connected with the rotation shaft 27 through a second transmission belt 30, a swinging rod 2701 is fixed at one end of the rotation shaft 27 far away from the driving motor 25, and an elastic piece 31 is arranged between the swinging rod 2701 and a protruding block 2301 fixed on the blanking slide 23.
When in use, starch raw materials are input into the screen drum 24 through the feeding structure, meanwhile, the driving motor 25 works to drive the screen drum 24 to rotate, and then, the minor raw materials which are not agglomerated in the screen drum 24 fall onto the blanking chute 23 through the filtering holes on the screen drum 24, and then enter the extruding cavity through the first hopper 403 by the blanking chute 23; meanwhile, the incomplete toothed ring 26 rotates along with the screen drum 24, when the toothed part on the incomplete toothed ring 26 is meshed with the gear 29, the gear 29 rotates, the rotating shaft of the gear 29 drives the rotating shaft 27 to rotate through the second transmission belt 30, accordingly, the swinging plate 28 swings towards one side in the screen drum 24, the swinging rod 2701 swings and causes the elastic piece 31 to deform, after the toothed part on the incomplete toothed ring 26 is separated from the gear 29, the elastic piece 31 bounces, the swinging rod 2701 drives the swinging plate 28 to swing towards the other side through the rotating shaft 27, the effect of reciprocating the swinging plate 28 in the screen drum 24 is realized in the rotating process of the screen drum 24, the swinging plate 28 has a stirring effect on raw materials in the screen drum 24, on one hand, the screening efficiency of the screen drum 24 on starch raw materials can be quickened, on the other hand, loose caking parts in the raw materials can be scattered, and finally, the phenomenon that the raw materials entering into the extrusion area have a mixed effect on the other side is remarkably improved, and the actual processing characteristics of the raw materials are affected by the caking phenomenon in the processing are avoided.
After a period of time during processing, a portion of agglomerated material may accumulate inside the screen drum 24 (not broken up by the swing plate 28), and an openable cover 2402 is further provided on the screen drum 24, so that a worker can open the cover 2402 to clean the material inside the screen drum 24 in time.
The feeding structure comprises a circular ring 32 fixedly installed on the blanking slide 23 and in sealing and rotating connection with the screen cylinder 24, and a second hopper 3201 fixed on the outer wall of the circular ring 32, wherein the circular ring 32 is hollow, and a plurality of feeding through holes 2401 matched with the circular ring 32 are formed in the outer wall of the screen cylinder 24 along the circumference at equal intervals.
In production, the screen drum 24 is in a rotating state, and a worker can input starch raw materials into the second hopper 3201, so that the starch raw materials can enter the screen drum 24 through the circular ring 32 and the feeding through hole 2401, and inconvenience brought to feeding work due to rotation of the screen drum 24 can be avoided through the arrangement of the feeding structure.
As another embodiment of the present invention, an application of the twin-screw extrusion device in improving the glutinous rice starch characteristics is also provided, and in actual processing production, the twin-screw extrusion device is utilized, before starch enters the conveying channel 4, the raw material sieving mechanism can perform sieving treatment on the starch raw material, so that the agglomerated raw material is prevented from entering the conveying channel 4, the mixing effect of clean water and the raw material is affected, the final gelatinization effect is further affected, and an effective guarantee is provided for the quality of the final product.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. Double screw extrusion equipment, is in including base (1), fixed mounting riser (2) on base (1) and locate conveying channel (4) on base (1), its characterized in that still includes:
the extrusion conveying mechanism is arranged in the conveying channel (4) and is used for executing extrusion pushing action on starch entering the conveying channel (4), a water supply mechanism is arranged on the periphery of the conveying channel (4), and the water supply mechanism is connected with the extrusion conveying mechanism and can pump clean water into the conveying channel (4);
the mounting frame (22) is fixedly arranged on one side of the vertical plate (2) facing the conveying channel (4), and is provided with a raw material screening mechanism which can perform screening action on the starch raw materials and conduct the screened starch raw materials into the conveying channel (4);
the raw material screening mechanism comprises a blanking slide carriage (23) fixed on the mounting frame (22) and obliquely arranged, and a screen drum (24) rotatably installed on the blanking slide carriage (23) and parallel to the blanking slide carriage (23), and a driving motor (25) is also installed on the blanking slide carriage (23), and the output end of the driving motor (25) is connected with the rotating shaft of the screen drum (24);
the outside of the screen cylinder (24) is provided with a feeding structure, the inside of the screen cylinder is provided with a swinging structure, and the swinging structure is triggered when the driving motor (25) drives the screen cylinder (24) to rotate and performs stirring action on starch entering the screen cylinder (24) from the feeding structure;
the extrusion conveying mechanism comprises two screws (401) rotatably arranged in the conveying channel (4), the two screws (401) are connected with a driving device (3) arranged on the base (1), and a first hopper (403) is arranged at the upper part of the conveying channel (4);
wherein two screws (401) are meshed with each other, and one screw (401) is connected with the water supply mechanism;
the water supply mechanism comprises a reciprocating transverse moving assembly which is arranged on the base (1) and connected with the screw rod (401) and a plurality of groups of sealing drawing and placing assemblies which are arranged on the periphery of the conveying channel (4), and the sealing drawing and placing assemblies are matched with the reciprocating transverse moving assembly.
2. The twin-screw extrusion and puffing equipment according to claim 1, wherein two guide plates (101) are fixedly arranged on the base (1), and the reciprocating traversing assembly comprises traversing plates (15) which are slidably embedded between the two guide plates (101), a frame body (13) fixedly arranged on the traversing plates (15) and a disc (16) rotatably arranged on the base (1);
the frame body (13) is movably provided with a plurality of pulleys (14) matched with the sealing and drawing and placing assembly through a plurality of connecting rods (1301), a push-pull rod (17) is arranged between the disc (16) and the transverse moving plate (15), and two ends of the push-pull rod (17) are respectively hinged with the eccentric position of the disc (16) and one side of the transverse moving plate (15) facing the disc (16);
a partition plate (402) is further arranged in the conveying channel (4) in a sealing manner, the partition plate (402) divides the conveying channel (4) into a transmission cavity and a squeezing cavity, and the screw (401) is connected with a bevel gear set (18) arranged in the transmission cavity;
a transmission shaft (19) is rotatably arranged on the base (1), and the transmission shaft (19) stretches into the transmission cavity and is connected with the rotating shaft of the disc (16) through a first transmission belt (20);
the bevel gear group (18) comprises a first bevel gear fixedly arranged on the screw rod (401) and a second bevel gear fixedly arranged at one end of the transmission shaft (19) positioned in the transmission cavity, and the second bevel gear is meshed with the first bevel gear.
3. The twin-screw extrusion and puffing equipment according to claim 2, wherein the sealing and pumping assembly comprises a second one-way valve (502) which is arranged on the outer wall of the conveying channel (4) and is communicated with the extrusion cavity, a cylinder (5) connected with the second one-way valve (502) and a piston disc (6) which is arranged in the cylinder (5) in a sealing sliding manner, and a first one-way valve (501) connected with a water source is also arranged on the outer wall of the cylinder (5);
the piston disc (6) is fixedly connected with a transverse plate (8) through a connecting plate (7), and the transverse plate (8) is connected with two groups of elastic telescopic structures arranged on the outer wall of the conveying channel (4).
4. A twin-screw extrusion and puffing equipment according to claim 3, characterized in that the elastic telescopic structure comprises a fixed seat (9) fixed on the outer wall of the conveying channel (4), a supporting rod (10) arranged in the fixed seat (9) in a sliding manner and a cylindrical spring (11) arranged in the fixed seat (9), wherein one end of the supporting rod (10) far away from the conveying channel (4) is fixed with the transverse plate (8);
the cylindrical spring (11) is sleeved on the periphery of the supporting rod (10), a boss (1001) is fixed at one end, far away from the transverse plate (8), of the supporting rod (10), a parting surface is formed at the joint of the boss (1001) and the supporting rod (10), and two ends of the cylindrical spring (11) are respectively connected with the parting surface and the inner wall of the fixing seat (9);
wherein, diaphragm (8) deviate from one side of drum (5) is fixed with drive plate (12), just drive plate (12) has seted up logical groove (1202), logical groove (1202) with pulley (14) and the axis of rotation adaptation of pulley (14), just drive plate (12) orientation one side of pulley (14) is equipped with inclined plane (1201), limit piece (21) are installed in logical groove (1202) rotation, limit piece (21) orientation one side of pulley (14) with inclined plane (1201) are in the coplanar, limit piece (21) with be equipped with the torsional spring between drive plate (12), just the tip of limit piece (21) be formed with bulge (2101) of inclined plane (1201) butt.
5. The twin-screw extrusion and puffing equipment according to claim 1, wherein the swinging structure comprises a rotating shaft (27) rotatably mounted on the blanking slide carriage (23) and extending into the interior of the screen drum (24) and in sealing and rotating connection with the screen drum (24), and a swinging plate (28) fixed on the outer wall of the rotating shaft (27), and a plurality of tooth-shaped bulges are equidistantly arranged on one side of the swinging plate (28) away from the rotating shaft (27);
wherein the central axes of the rotating shaft (27) and the screen cylinder (24) coincide, an incomplete toothed ring (26) is fixed at one end of the screen cylinder (24) far away from the driving motor (25), and the incomplete toothed ring (26) is matched with a gear (29) rotatably arranged on the blanking slide (23);
the rotating shaft of the gear (29) is connected with the rotating shaft (27) through a second transmission belt (30), one end, far away from the driving motor (25), of the rotating shaft (27) is fixed with a swinging rod (2701), and an elastic piece (31) is arranged between the swinging rod (2701) and a protruding block (2301) fixed on the blanking slide (23).
6. The twin-screw extrusion equipment according to claim 5, wherein the feeding structure comprises a circular ring (32) fixedly mounted on the blanking slide (23) and in sealing and rotating connection with the screen cylinder (24), and a second hopper (3201) fixed on the outer wall of the circular ring (32), the interior of the circular ring (32) is hollow, and a plurality of feeding through holes (2401) matched with the circular ring (32) are formed in the outer wall of the screen cylinder (24) along the circumference at equal intervals.
7. Use of the twin screw extrusion apparatus of claim 1 for improving the properties of waxy rice starch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310653319.3A CN116369566B (en) | 2023-06-05 | 2023-06-05 | Twin-screw extrusion puffing equipment and application thereof in improving glutinous rice starch characteristics |
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| CN202310653319.3A CN116369566B (en) | 2023-06-05 | 2023-06-05 | Twin-screw extrusion puffing equipment and application thereof in improving glutinous rice starch characteristics |
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| CN116369566B true CN116369566B (en) | 2023-07-25 |
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| CN116369566A (en) | 2023-07-04 |
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