CN112898602B - Preparation method of edible straw and raw material mixing device - Google Patents
Preparation method of edible straw and raw material mixing device Download PDFInfo
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- CN112898602B CN112898602B CN202110049298.5A CN202110049298A CN112898602B CN 112898602 B CN112898602 B CN 112898602B CN 202110049298 A CN202110049298 A CN 202110049298A CN 112898602 B CN112898602 B CN 112898602B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/96—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with openwork frames or cages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/181—Preventing generation of dust or dirt; Sieves; Filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
- B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
- B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
- B01F35/5311—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom with horizontal baffles mounted on the walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/06—Mixing of food ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/04—Starch derivatives
- C08J2303/10—Oxidised starch
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- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a preparation method of an edible straw and a raw material mixing device, and relates to the technical field of the preparation method of the edible straw and the raw material mixing device; adding the obtained mixture into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank; and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven for drying through a conveying belt to form the edible straw. The straw can be completely degraded after use, and can also be eaten as food, so that the environment pollution is avoided. The mixing efficiency of the raw materials is improved, and the raw materials are mixed more uniformly.
Description
Technical Field
The invention relates to the technical field of a preparation method of an edible straw and a raw material mixing device, in particular to a preparation method of an edible straw and a raw material mixing device.
Background
The existing suction pipe, or drinking pipe, is a cylindrical hollow plastic product, and has the main functions of drinking the beverage in a cup and sucking the bone marrow of a cooked animal long bone. The plastic straw is often used as a disposable tool and is discarded after being used, so that the resource waste is caused, and meanwhile, the degradability is poor, and the burden is brought to the environment.
However, the existing degradable straw is usually made of rice flour and tapioca starch, and has the problems of too fast water absorption, incapability of resisting high temperature, poor freezing resistance and insufficient strength. The straw is often needed to mix the raw materials in the preparation process, but the existing mixing device has the problems of low efficiency, uneven mixing and the like.
Therefore, an edible straw is needed, which can be completely degraded after being used and can also be eaten as food, so as to avoid environmental pollution. The mixing efficiency of the raw materials is improved, and the raw materials are mixed more uniformly.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of an edible straw and a raw material mixing device, the straw can be completely degraded after being used, and can also be eaten as food, so that the environmental pollution is avoided. The mixing efficiency of the raw materials is improved, and the raw materials are mixed more uniformly.
The invention specifically adopts the following technical scheme:
the preparation method of the edible straw comprises the following steps: preparation of a first raw material S1: taking 600-2000 parts of cassava starch, adding water to adjust the pH value to Be 8.4-8.6, adjusting the temperature to Be 20-25 ℃, adding 200-800 parts of epoxypropane, adding 200-1200 parts of acetic anhydride, maintaining the pH value to Be 8.30-8.6 in the reaction process, reacting for 30-60 min, adding 4-10 parts of sodium bisulfate, reacting for 10-15 min, adjusting the pH value to Be 5.0-5.5 by using 10% HCl, dehydrating and drying to prepare powder for later use;
preparation of a second raw material S2: taking 10-30 parts of high-chain corn starch, adding water to adjust the pH value to 11-12, adding 4-10 parts of epoxypropane, reacting for 1.5-3 h under the environment of 20-30 ℃ T, heating to 45.0-49 ℃ T, maintaining the pH value to 11.5-12.5 by using 2.6-3.0% sodium hydroxide, etherifying for 20h, adjusting the pH value to 6-8 by using 8-10% hydrogen chloride after etherification, adding 6-10 parts of catalyst, adding 0.3-1.2% sodium metabisulfite, continuing to react for 10-15 min, adjusting the pH value to 5.0-5.7 by using 8-10% hydrogen chloride, dehydrating and drying to prepare powder for later use; it is further preferable to use copper sulfate as the catalyst.
Preparation of a third raw material S3: taking 20-50 parts of potato starch, adding water to adjust the pH value of milk to 23.5-24.5 Be, heating to 36.5-37.5 ℃, adjusting the pH value to 10-11 by using 2.3-2.5% of sodium hydroxide in the heating process, adding 2.0-5.0 parts of sodium trimetaphosphate, adding 10% of hydrogen chloride to adjust the pH value to 5.0-5.5 after the reaction is finished, and dehydrating and drying to prepare powder for later use;
preparation of the fourth raw material of S4: taking 400-600 parts of cassava starch, 500-1000 parts of wheat starch and 500-1000 parts of corn starch, adding water to adjust 22-23 Be, adjusting the pH value to 8.0-9.6 by using 2.3-2.5% of sodium hydroxide, adjusting the temperature T to 20-25 ℃, adding 50-100 parts of anhydride in which adipic acid is dissolved, then adding 200-450 parts of acetic anhydride, adding acetic anhydride and diluted alkali to maintain the pH value to 8.0-9.5, balancing the pH value to 8.0-9.5, controlling the temperature of materials in the reaction process to Be less than 40 ℃, maintaining the pH value of a reaction system to 8.0-9.5 by using 2.3-2.5% of sodium hydroxide to react for 30-60 min, adjusting the pH value to 5.0-6.0 by using 10% of hydrogen chloride, dehydrating and drying to prepare powder for later use;
mixing S5 raw materials, namely mixing the raw materials prepared from S1-S4 by a mixing device to obtain a mixture;
preparation of S6 tube blank: adding the mixture obtained in the step S5 into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank;
s7 slitting and drying: and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven for drying through a conveying belt to form the edible straw.
In the invention, preferably, 2.3-2.5% of dilute alkali is added to balance the flow rate of acetic anhydride and dilute alkali while adding acetic anhydride to S1.
According to the present invention, it is further preferred that the catalyst and sodium metabisulfite in S2 are completely dissolved with water before being added.
The invention is further preferable that before dehydration and drying, S2-S4 are washed by rotational flow until the conductivity of the pulp is less than 1500 us/cm.
In a further preferred embodiment of the present invention, after adding sodium trimetaphosphate to S3, the viscosity at 5% ds92 ℃ is measured at intervals of one hour, and the reaction is terminated when the viscosity is 12000 to 20000 mpa.s.
The invention discloses a raw material mixing device for an edible straw, which comprises a tank body, wherein a stirring shaft is rotationally arranged in the tank body, a partition plate is horizontally arranged in the tank body to divide the tank body into a feeding cavity and a stirring cavity, a feeding box is rotationally arranged at the upper end of the partition plate, a stirring assembly is arranged in the stirring cavity of the stirring shaft, a spacer bush which is convenient for the penetration of the stirring shaft is arranged in the middle of the feeding box, a plurality of baffle plates are arranged between the outer wall of the spacer bush and the inner wall of the feeding box to divide the feeding box into four feeding areas, a discharging pipe penetrating through the partition plate is arranged at the lower end of each feeding area, a feeding port mutually communicated with the feeding box is formed in the upper end of the tank body, and a discharging port is formed in the lower end of the tank body.
Preferably, the partition board is provided with an annular through groove, a positioning ring is rotatably arranged in the through groove, two inner side walls of the through groove are respectively provided with a first groove, two side walls of the positioning ring are provided with second grooves respectively aligned with the first grooves, the first grooves and the second grooves are buckled to form ball grooves, the ball grooves are filled with ball bodies, the upper end of the partition board is provided with mounting holes mutually communicated with the first grooves, the inner walls of the mounting holes are in threaded connection with limiting blocks, the positioning ring penetrates through the through holes in the thickness direction and is provided with through holes convenient for a discharging pipe to pass through, and a lower pipe of the discharging pipe penetrates through the positioning ring and is provided with a valve.
The invention is further preferable that the charging box is cylindrical, a gear ring is sleeved on the outer wall of the charging box, a driving motor is arranged at the upper end of the partition plate, a driving wheel is sleeved on a driving shaft of the driving motor, the driving wheel is meshed with the gear ring, an annular first guide groove is arranged at the upper end of the partition plate, a second guide groove aligned with the first guide groove is arranged at the bottom wall of the lower end of the charging box, and a plurality of guide balls are arranged between the first guide groove and the second guide groove.
The invention is further preferable that the stirring component comprises a sleeve shaft, a positioning plate, a connecting rod, a first stirring blade and a second stirring blade; the outer wall connection that the jar body was run through to the upper end of (mixing) shaft has servo motor, the sleeve shaft is established on the (mixing) shaft, the sleeve shaft is located the stirring intracavity, the below at the jar body is installed to the locating plate, the lower extreme of the jar body is all run through to the lower extreme of (mixing) shaft and sleeve shaft and is rotated with the locating plate and be connected, the lower extreme of sleeve shaft is provided with drive assembly, the upper end and the (mixing) shaft interconnect of connecting rod, the unsettled setting of lower extreme of connecting rod, first stirring leaf is provided with a plurality ofly, the one end and the connecting rod lateral wall interconnect of first stirring leaf, the unsettled setting of two other ends of first stirring leaf, be provided with the clearance between the adjacent first stirring leaf, second stirring leaf is provided with a plurality ofly, the first and the sleeve shaft interconnect of second stirring leaf, the unsettled setting of the other end of second stirring leaf, first stirring leaf and second stirring leaf dislocation set.
As a further preferred of the present invention, the driving assembly includes a first pulley, a second pulley, a v-belt, and a belt motor; first belt pulley cover is established on the sleeve shaft and is located jar body below, and the lower extreme outer wall at jar body is installed to the belt motor, and the second belt pulley cover is established in the pivot of belt motor, and first belt pulley and second belt pulley pass through V belt interconnect.
The invention has the following beneficial effects:
1. according to the invention, four different modified starches are prepared, and then the four different modified starches are uniformly mixed to be used as raw materials to prepare the edible straw, so that starch gelatinization is increased, and the water resistance and strength of the straw are improved. The straw can be completely degraded after being used, and can also be eaten as food, so that the environment is prevented from being polluted. Through the mixing arrangement who sets up, improve the mixing efficiency of raw materials, make four kinds of raw materials mix more evenly. The first raw material has the advantages of improving the flexibility of the straw, stabilizing the moisture of the straw, improving the freezing resistance of the straw and improving the strength of the straw. The second raw material has strong film-forming strength, has good improvement effect on the water resistance and the strength of the straw, belongs to resistant starch, is one of dietary fibers, has a plurality of benefits to the body if eaten as food, and mainly comprises the following components: resistant starch is resistantEnzymeHas slow release of glucose in vivo and low content of glucoseInsulinReaction of (a) withControl ofBlood sugarBalance, reduce hunger sensation, especially suitable forDiabetes mellitusThe food is taken by patients. ② the resistant starch has the function of soluble edible fiber, can increase the defecation amount after eating, reduce constipation and reduce the number of constipationCancer of colonThe danger of (2). ③ resistant starch can be reducedBlood gallbladder SterolsAnd triglyceride, and has weight reducing effect due to increased cholesterol and triglyceride in excrement after resistant starch is eaten. The microorganisms metabolize carbohydrate to generate short-chain fat such as butyric acid and the like through fermentation to promote intestinal health. The third raw material has larger starch molecules, higher starch viscosity and higher starch paste transparency, is beneficial to improving the transparency and strength of the straw, ensures that the straw is softer, and improves the pressure strength, the heat resistance and the like. The fourth raw material has a different reaction mode from the other three raw materials, and is improved mainly in terms of the water resistance of the straw, and the straw can be kept in hot water for more than 2 hours and in cold water for more than 6 hours after the fourth raw material is added.
2. Mixing arrangement's jar internal portion is provided with the baffle, and the baffle is with jar internal partitioning for adding material chamber and stirring wall, and the upper end of baffle is provided with the charging box, and jar body is seted up the charge door that communicates each other with the charging box, can realize not shutting down reinforced at the in-process of stirring, improves stirring efficiency. The charging box divides the charging box into four charging areas through a plurality of baffles, and the four charging areas respectively hold four modified starch raw materials. The charging box can rotate, when avoiding the raw materials to add to the stirring intracavity from the charging box, makes the raw materials of interpolation more disperse, piles up in fixed position, improves the mixing efficiency of raw materials.
3. Through setting up the holding ring, the holding ring can rotate by the relative baffle, and the discharging pipe runs through the holding ring, and the holding ring keeps relative static at pivoted in-process and charging box, and then when the discharge gate that realizes the charging box can rotate, adds the material chamber and stirs the chamber and keep apart relatively, and the dust that the stirring of stirring intracavity produced can not the loss to reinforced intracavity, and reinforced and stirring are independent relatively, and the two does not influence each other. The holding ring passes through ball body with the baffle and can rotate relatively when keeping wholeness to the friction is the rotational friction, and the friction loss is little. The mounting hole that communicates each other with first recess is seted up to the baffle, conveniently installs and dismantles the ball body, through threaded connection's stopper, plays the spacing fixed action to the ball body.
4. Through the gear ring and the driving motor, the charging box is driven to rotate independently. The lower end of the feeding box and the partition plate are loaded through the guide balls, and friction is rolling friction in the relative rotating process, so that friction loss is reduced.
5. The first stirring blade and the connecting rod of the stirring component are connected with the stirring shaft as a whole and rotate along with the stirring shaft. The second stirring blade and the sleeve shaft are mutually connected and rotate under the action of the driving component as a whole. Can realize that first stirring leaf and second stirring leaf can be followed opposite direction and rotated, a plurality of first stirring leaves are parallel to each other to be provided with the clearance between the adjacent first stirring leaf, first stirring leaf and second stirring leaf dislocation set improve stirring efficiency. The connecting rod is located the periphery of (mixing) shaft, and the upper end of connecting rod is to being close to the bending of (mixing) shaft and with (mixing) shaft interconnect, the lower extreme of connecting rod and (mixing) shaft be parallel to each other, the part that is parallel to each other is the position with first stirring leaf interconnect.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the edible custom raw material mixing device of the present invention;
FIG. 2 is a schematic structural view of the stirring assembly;
FIG. 3 is a schematic top view of the feed box;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 5 is an enlarged view of the structure at B in FIG. 1;
FIG. 6 is an enlarged view of the structure at C in FIG. 1;
in the attached drawings, 1-a tank body, 2-a partition plate, 201-a feeding cavity, 202-a stirring cavity, 3-a stirring shaft, 4-a feeding box, 401-a baffle plate, 402-a feeding area, 403-a spacer bush, 404-a discharging pipe, 405-a valve, 5-a stirring component, 501-a connecting rod, 502-a first stirring blade, 503-a second stirring blade, 504-a sleeve shaft, 505-a positioning plate, 6-a positioning ring, 7-a ball body, 701-a limiting block, 8-a guiding ball, 801-a first guiding groove, 802-a second guiding groove, 9-a driving component, 901-a first belt pulley, 902-a second belt pulley, 903-a triangular belt, 904-a belt motor, 10-a toothed ring, 11-a driving wheel and 12-a driving motor, 13-servo motor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1
The preparation method of the edible straw comprises the following steps: preparation of a first raw material S1: taking 600 parts of cassava starch, adding water to adjust the pH value to 8.4, adding 200 parts of propylene oxide, adjusting the temperature to 20 ℃, adding 200 parts of acetic anhydride, maintaining the pH value to 8.30 in the reaction process, reacting for 30min, adding 4 parts of sodium bisulfate, reacting for 10min, adjusting the pH value to 5.0 by 10% HCl, dehydrating and drying to prepare powder for later use;
preparation of a second raw material S2: taking 10 parts of high-chain corn starch, adding water to adjust the pH value to 11, adding 4 parts of propylene oxide, reacting for 1.5h under the environment of T-20 ℃, heating to the temperature of T-45.0 ℃, maintaining the pH value to 11.5 by using 2.6% of sodium hydroxide, etherifying for 20h, adjusting the pH value to 6 by using 8% of hydrogen chloride after etherification is finished, adding 6 parts of catalyst, adding 0.3% of hydrogen peroxide, adding 3 parts of sodium metabisulfite, continuing to react for 10min, adjusting the pH value to 5.0 by using 8% of hydrogen chloride, dehydrating and drying to prepare powder for later use;
preparation of a third raw material S3: taking 20 parts of potato starch, adding water to adjust the pH value of the milk 23.5.5Be, heating to 36.5 ℃, adjusting the pH value to 10 by using 2.3% of sodium hydroxide in the heating process, adding 2.0 parts of sodium trimetaphosphate, adding 10% of hydrogen chloride to adjust the pH value to 5.0 after the reaction is finished, and preparing the mixture into powder for later use after dehydration and drying;
preparation of the fourth raw material of S4: taking 400 parts of cassava starch, 500 parts of wheat starch and 500 parts of corn starch, adding water to adjust milk 22, adjusting the pH to 8.0 by using 2.3% of sodium hydroxide, adjusting the temperature T to 20 ℃, adding 50 parts of anhydride in which adipic acid is dissolved, then adding 200 parts of acetic anhydride, adding acetic anhydride and dilute alkali to maintain the pH to 8.0, balancing the pH to 8.0, controlling the temperature of materials in the reaction process to be less than 40 ℃, maintaining the pH of a reaction system to 8.0 by using 2.3% of sodium hydroxide to react for 30min, adjusting the pH to 5.0 by using 10% of hydrogen chloride, dehydrating and drying to prepare powder for later use;
mixing S5 raw materials, namely mixing the raw materials prepared from S1-S4 by a mixing device to obtain a mixture;
preparation of S6 tube blank: adding the mixture obtained in the step S5 into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank;
s7 slitting and drying: and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven for drying through a conveying belt to form the edible straw.
More preferably, acetic anhydride is added in S1, and 2.3% dilute alkali is added simultaneously to balance the acetic anhydride and dilute alkali flow rate.
It is further preferred that both the catalyst and sodium metabisulfite in S2 are completely dissolved with water prior to addition.
More preferably, before dehydration and drying of S2-S4, rotational flow washing is carried out until the conductivity of the milk is less than 1500 us/cm.
Further preferably, after addition of sodium trimetaphosphate in S3, samples were taken every hour to measure 5% ds92 ℃ viscosity and the reaction was stopped at 12000 mpa.s.
Example 2
The present embodiment is further optimized on the basis of embodiment 1 as follows: the preparation method of the edible straw comprises the following steps: preparation of a first raw material S1: taking 1000 parts of cassava starch, adding water to adjust the pH value to 8.5 by adding water to adjust the milk to 22.5Be, adjusting the pH value to 8.5 by using 2.4% sodium hydroxide, adding 500 parts of propylene oxide, adjusting the temperature to 24 ℃, adding 1000 parts of acetic anhydride, maintaining the pH value to 8.5 in the reaction process, reacting for 40min, adding 6 parts of sodium bisulfate, reacting for 12min, adjusting the pH value to 5.4 by using 10% HCl, dehydrating and drying to prepare powder for later use;
preparation of a second raw material S2: taking 20 parts of high-chain corn starch, adding water to adjust the milk 225Be, adjusting the pH value to 11 by using 2.8% sodium hydroxide, adding 8 parts of epoxypropane, reacting for 2 hours under the environment of T-25 ℃, heating to the temperature of T-47 ℃, maintaining the pH value to 12 by using 2.8% sodium hydroxide, etherifying for 20 hours, adjusting the pH value to 7 by using 9% hydrogen chloride after etherification is finished, adding 9 parts of catalyst, adding 1.0% hydrogen peroxide, adding 10 parts of sodium metabisulfite, continuously reacting for 13 minutes, adjusting the pH value to 5.5 by using 9% hydrogen chloride, dehydrating and drying to prepare powder for later use;
preparation of a third raw material S3: taking 30 parts of potato starch, adding water to adjust the pH value of 24Be, heating to 37 ℃, adjusting the pH value to 10 by using 2.4% sodium hydroxide in the heating process, adding 3 parts of sodium trimetaphosphate, adding 10% hydrogen chloride after the reaction is finished to adjust the pH value to 5.3, and dehydrating and drying to prepare powder for later use;
preparation of the fourth raw material of S4: taking 500 parts of cassava starch, 800 parts of wheat starch and 800 parts of corn starch, adding water to adjust milk to 22.5Be, adjusting the pH to 9.0 by using 2.4% sodium hydroxide, adjusting the temperature T to 23 ℃, adding 80 parts of anhydride in which adipic acid is dissolved, then adding 300 parts of acetic anhydride, adding diluted alkali to maintain the pH to 9.0, balancing the pH to 9.0, controlling the temperature of materials in the reaction process to Be less than 40 ℃, maintaining the pH of a reaction system to 9.0 by using 2.4% sodium hydroxide, reacting for 50min, adjusting the pH to 5.5 by using 10% hydrogen chloride, dehydrating and drying to prepare powder for later use;
s5, mixing the raw materials prepared from S1-S4 by a mixing device to obtain a mixture;
preparation of S6 tube blank: adding the mixture obtained in the step S5 into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank;
s7 slitting and drying: and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven through a conveying belt for drying to form the edible straw.
More preferably, acetic anhydride is added in S1, and 2.4% dilute alkali is added simultaneously to balance the acetic anhydride and dilute alkali flow rate.
It is further preferred that both the catalyst and sodium metabisulfite in S2 are completely dissolved with water prior to addition.
More preferably, before dehydration and drying of S2-S4, rotational flow washing is carried out until the conductivity of the milk is less than 1500 us/cm.
Further preferably, after adding sodium trimetaphosphate to S3, the viscosity at 5% ds92 ℃ was measured at an hourly sampling and the reaction was stopped at a viscosity of 15000 mpa.s.
Example 3
The present embodiment is further optimized on the basis of embodiment 1 as follows: the preparation method of the edible straw comprises the following steps: preparation of a first raw material S1: taking 2000 parts of cassava starch, adding water to adjust the pH value to 8.6 by adding 23.0Be, adjusting the pH value to 8.6 by using 2.5% sodium hydroxide, adding 800 parts of propylene oxide, adjusting the temperature to 25 ℃, adding 1200 parts of acetic anhydride, maintaining the pH value to 8.6 in the reaction process, reacting for 60min, adding 10 parts of sodium bisulfate, reacting for 15min, adjusting the pH value to 5.5 by using 10% HCl, dehydrating and drying to prepare powder for later use;
preparation of a second raw material S2: taking 30 parts of high-chain corn starch, adding water to adjust the pH value to 12, adding 10 parts of propylene oxide, reacting for 3 hours under the environment of T-30 ℃, heating to the temperature of T-49 ℃, maintaining the pH value to 12.5 by using 3.0% sodium hydroxide, etherifying for 20 hours, adjusting the pH value to 8 by using 10% hydrogen chloride after etherification is finished, adding 10 parts of catalyst, adding 1.2% hydrogen peroxide, adding 15 parts of sodium metabisulfite, continuously reacting for 15 minutes, adjusting the pH value to 5.7 by using 10% hydrogen chloride, dehydrating and drying to prepare powder for later use;
preparation of a third raw material S3: taking 50 parts of potato starch, adding water to adjust the pH value of the potato starch to 24.5Be, heating to 37.5 ℃, adjusting the pH value to 11 by using 2.5% sodium hydroxide in the heating process, adding 5.0 parts of sodium trimetaphosphate, adding 10% hydrogen chloride to adjust the pH value to 5.5 after the reaction is finished, and dehydrating and drying to prepare powder for later use;
preparation of the fourth raw material of S4: taking 600 parts of cassava starch, 1000 parts of wheat starch and 1000 parts of corn starch, adding water to adjust the milk to 23Be, adjusting the pH to 9.6 by using 2.5% sodium hydroxide, adjusting the temperature T to 25 ℃, adding 100 parts of anhydride dissolved with adipic acid, then adding 450 parts of acetic anhydride, adding diluted alkali to maintain the pH to 9.5, balancing the pH to 9.5, controlling the temperature of materials in the reaction process to Be less than 40 ℃, using 2.5% sodium hydroxide to maintain the pH of the reaction system to 9.5, reacting for 60min, adjusting the pH to 6.0 by using 10% hydrogen chloride, dehydrating and drying to prepare powder for later use;
s5, mixing the raw materials prepared from S1-S4 by a mixing device to obtain a mixture;
preparation of S6 tube blank: adding the mixture obtained in the step S5 into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank;
s7 slitting and drying: and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven for drying through a conveying belt to form the edible straw.
More preferably, acetic anhydride is added in S1, and 2.5% dilute alkali is added simultaneously to balance the flow rate of acetic anhydride and dilute alkali.
It is further preferred that both the catalyst and sodium metabisulfite in S2 are completely dissolved with water prior to addition.
More preferably, before dehydration and drying of S2-S4, rotational flow washing is carried out until the conductivity of the milk is less than 1500 us/cm.
Further preferably, after adding sodium trimetaphosphate to S3, the viscosity at 5% ds92 ℃ was measured at one hour intervals and the reaction was stopped at a viscosity of 20000 mpa.s.
Example 4
The invention discloses a raw material mixing device for an edible straw, which comprises a tank body 1, wherein a stirring shaft 3 is rotatably arranged in the tank body 1, a partition plate 2 is horizontally arranged in the tank body 1 to divide the tank body 1 into a feeding cavity 201 and a stirring cavity 202, the upper end of the partition plate 2 is rotatably provided with a feeding box 4, the stirring shaft 3 is positioned in the stirring cavity 202 and is provided with a stirring assembly 5, the middle part of the feeding box 4 is provided with a spacer 403 through which the stirring shaft 3 can conveniently penetrate, a plurality of baffle plates 401 are arranged between the outer wall of the spacer 403 and the inner wall of the feeding box 4 to divide the feeding box 4 into four feeding areas 402, the lower end of each feeding area 402 is provided with a discharging pipe 404 penetrating through the partition plate 2, the upper end of the tank body 1 is provided with a feeding port mutually communicated with the feeding box 4, and the lower end of the tank body 1 is provided with a discharging port.
After the technical scheme is adopted: mixing arrangement's 1 inside baffles 2 that are provided with of jar body, baffle 2 will jar 1 internal partitioning of body for adding material chamber 201 and stirring wall, and the upper end of baffle 2 is provided with feed box 4, and jar body 1 is seted up the charge door that communicates each other with feed box 4, can realize not shutting down at the in-process of stirring reinforced, improves stirring efficiency. The charging box 4 is internally divided into four charging areas 402 by a plurality of baffle plates 401, and the four charging areas 402 respectively hold four modified starch raw materials. Feed box 4 can rotate, when avoiding the raw materials to add from feed box 4 to stirring chamber 202 in, makes the raw materials of interpolation more disperse, piles up at fixed position, improves the mixing efficiency of raw materials.
Example 5
The present embodiment is further optimized on the basis of embodiment 1 as follows: annular logical groove has been seted up to baffle 2, it is provided with holding ring 6 to lead to the inslot rotation, first recess has all been seted up to two inside walls that lead to the groove, the second recess that aligns with first recess respectively is seted up to the both sides wall of holding ring 6, first recess and second recess lock form the ball groove, the ball inslot intussuseption is provided with ball body 7, the mounting hole that communicates each other with first recess is seted up to the upper end of baffle 2, mounting hole inner wall threaded connection has stopper 701, holding ring 6 runs through the through-hole of seting up the discharging pipe 404 of being convenient for and passing through along thickness direction, the low tube of discharging pipe 404 runs through holding ring 6 and sets valve 405.
After the technical scheme is adopted: through setting up holding ring 6, holding ring 6 can rotate relative baffle 2, discharging pipe 404 runs through holding ring 6, holding ring 6 keeps relative static at pivoted in-process and charging box 4, and then when the discharge gate that realizes charging box 4 can rotate, adds material chamber 201 and stirring chamber 202 and keeps apart relatively, and the dust that the stirring in the stirring chamber 202 produced can not the loss to adding material chamber 201 in, and it is reinforced relatively independent with the stirring, and the two does not influence each other. The positioning ring 6 and the partition board 2 can rotate relatively while keeping integrity through the ball body 7, and friction is rotational friction, so that friction loss is small. The mounting hole that communicates each other with first recess is seted up to baffle 2, conveniently installs and dismantles ball body 7, and stopper 701 through threaded connection plays the spacing fixed action to ball body 7.
Example 6
The present embodiment is further optimized on the basis of embodiment 1 as follows: the appearance of feed box 4 is the cylinder, the outer wall cover of feed box 4 is equipped with ring gear 10, the upper end of baffle 2 is provided with driving motor 12, the cover is equipped with action wheel 11 in driving motor 12's the drive shaft, action wheel 11 and ring gear 10 intermeshing, the upper end of baffle 2 is provided with annular first guide way 801, the lower extreme diapire of feed box 4 is provided with the second guide way 802 that aligns with first guide way 801, be provided with a plurality of direction ball 8 between first guide way 801 and the second guide way 802.
After the technical scheme is adopted: the charging box 4 is driven to rotate independently through the gear ring 10 and the driving motor 12. The lower end of the feeding box 4 and the partition plate 2 are loaded through the guide ball 8, and friction is rolling friction in the relative rotating process, so that friction loss is reduced.
Example 7
The present embodiment is further optimized on the basis of embodiment 1 as follows: the stirring assembly 5 comprises a sleeve shaft 504, a positioning plate 505, a connecting rod 501, a first stirring blade 502 and a second stirring blade 503; the outer wall that the upper end of (mixing) shaft 3 runs through jar body 1 is connected with servo motor 13, sleeve 504 is established on (mixing) shaft 3, sleeve 504 is located stirring chamber 202, locating plate 505 is installed in the below of jar body 1, the lower extreme of (mixing) shaft 3 and sleeve 504 all runs through the lower extreme of jar body 1 and rotates with locating plate 505 to be connected, the lower extreme of sleeve 504 is provided with drive assembly 9, the upper end and the (mixing) shaft 3 interconnect of connecting rod 501, the unsettled setting of lower extreme of connecting rod 501, first stirring leaf 502 is provided with a plurality ofly, the one end and the connecting rod 501 lateral wall interconnect of first stirring leaf 502, the unsettled setting of two other ends of first stirring leaf 502, be provided with the clearance between the adjacent first stirring leaf 502, second stirring leaf 503 is provided with a plurality ofly, the first and sleeve 504 interconnect of second stirring leaf 503, the unsettled setting of the other end of second stirring leaf 503, first stirring leaf 502 and the dislocation set of second stirring leaf 503. The driving assembly 9 comprises a first belt pulley 901, a second belt pulley 902, a triangular belt 903 and a belt motor 904; the first belt pulley 901 is sleeved on the sleeve shaft 504 and is located below the tank body 1, the belt motor 904 is installed on the outer wall of the lower end of the tank body 1, the second belt pulley 902 is sleeved on a rotating shaft of the belt motor 904, and the first belt pulley 901 and the second belt pulley 902 are connected with each other through a triangular belt 903.
After the technical scheme is adopted: the first stirring blade 502 of the stirring assembly 5 and the connecting rod 501 are connected with the stirring shaft 3 as a whole and rotate together with the stirring shaft 3. The second stirring blade 503 is connected to the sleeve shaft 504 and rotates as a unit under the action of the driving assembly 9. Can realize that first stirring leaf 502 and second stirring leaf 503 can rotate along opposite direction, a plurality of first stirring leaves 502 are parallel to each other to be provided with the clearance between the adjacent first stirring leaf 502, first stirring leaf 502 and second stirring leaf 503 dislocation set improve stirring efficiency. The connecting rod 501 is located at the periphery of the stirring shaft 3, the upper end of the connecting rod 501 is bent towards the stirring shaft 3 and is connected with the stirring shaft 3, the lower end of the connecting rod 501 is parallel to the stirring shaft 3, and the parallel part is the part connected with the first stirring blade 502.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. A preparation method of an edible straw is characterized by comprising the following steps: the method comprises the following steps:
preparation of a first raw material S1: taking 600-2000 parts of cassava starch, adding water to adjust the pH value to Be 8.4-8.6, adjusting the temperature to Be 20-25 ℃, adding 200-800 parts of epoxypropane, adding 200-1200 parts of acetic anhydride, maintaining the pH value to Be 8.30-8.6 in the reaction process, reacting for 30-60 min, adding 4-10 parts of sodium bisulfate, reacting for 10-15 min, adjusting the pH value to Be 5.0-5.5 by using 10% HCl, dehydrating and drying to prepare powder for later use;
preparation of a second raw material S2: taking 10-30 parts of high-chain corn starch, adding water to adjust the pH value of 22.0-23.0 Be, adjusting the pH value to 11-12 by using 2.6-3.0% of sodium hydroxide, adding 4-10 parts of propylene oxide, reacting for 1.5-3 h under the environment of 20-30 ℃ T, heating to 45.0-49 ℃, maintaining the pH value to 11.5-12.5 by using 2.6-3.0% of sodium hydroxide, etherifying for 20h, adjusting the pH value to 6-8 by using 8-10% of hydrogen chloride after etherification, adding 6-10 parts of catalyst, adding 0.3-1.2% of sodium metabisulfite, continuing to react for 10-15 min, adjusting the pH value to 5.0-5.7 by using 8-10% of hydrogen chloride, dehydrating and drying to prepare powder for later use;
preparation of a third raw material S3: taking 20-50 parts of potato starch, adding water to adjust the pH value of milk to 23.5-24.5 Be, heating to 36.5-37.5 ℃, adjusting the pH value to 10-11 by using 2.3-2.5% of sodium hydroxide in the heating process, adding 2.0-5.0 parts of sodium trimetaphosphate, adding 10% of hydrogen chloride to adjust the pH value to 5.0-5.5 after the reaction is finished, and dehydrating and drying to prepare powder for later use;
preparation of the fourth raw material of S4: taking 400-600 parts of cassava starch, 500-1000 parts of wheat starch and 500-1000 parts of corn starch, adding water to adjust 22-23 Be, adjusting the pH value to 8.0-9.6 by using 2.3-2.5% of sodium hydroxide, adjusting the temperature T to 20-25 ℃, adding 50-100 parts of anhydride in which adipic acid is dissolved, then adding 200-450 parts of acetic anhydride, adding acetic anhydride and diluted alkali to maintain the pH value to 8.0-9.5, balancing the pH value to 8.0-9.5, controlling the temperature of materials in the reaction process to Be less than 40 ℃, maintaining the pH value of a reaction system to 8.0-9.5 by using 2.3-2.5% of sodium hydroxide to react for 30-60 min, adjusting the pH value to 5.0-6.0 by using 10% of hydrogen chloride, dehydrating and drying to prepare powder for later use;
mixing S5 raw materials, namely mixing the raw materials prepared from S1-S4 by a raw material mixing device to obtain a mixture;
preparation of S6 tube blank: adding the mixture obtained in the step S5 into a straw extrusion device for extrusion molding, extruding the mixture through a molding die head, and cooling and molding to form a pipe blank;
s7 slitting and drying: and cooling and cutting the pipe blank, and conveying the pipe blank into a drying oven through a conveying belt for drying to form the edible straw.
2. The method for preparing an edible straw according to claim 1, wherein: and adding 2.3-2.5% of dilute alkali while adding acetic anhydride to S1.
3. The method for preparing an edible straw according to claim 1, wherein: both the catalyst and sodium metabisulfite in S2 were completely dissolved with water before addition.
4. The method for preparing an edible straw according to claim 1, wherein: and (3) carrying out rotational flow washing before dehydrating and drying S2-S4 until the conductivity of the slurry is less than 1500 us/cm.
5. The method for preparing an edible straw according to claim 1, wherein: after adding sodium trimetaphosphate to S3, sampling every other hour to measure the viscosity of 5% ds92 ℃, and stopping the reaction when the viscosity is 12000-20000 mpa.s.
6. A raw material mixing apparatus for the edible straw of claim 1, wherein: the raw material mixing device comprises a tank body, wherein a stirring shaft is arranged in the tank body in a rotating manner, a partition plate is horizontally arranged in the tank body to divide the tank body into a feeding cavity and a stirring cavity, a feeding box is arranged at the upper end of the partition plate in a rotating manner, the stirring shaft is positioned in the stirring cavity and is provided with a stirring assembly, a spacer bush which is convenient for the stirring shaft to penetrate through is arranged in the middle of the feeding box, a plurality of baffle plates are arranged between the outer wall of the spacer bush and the inner wall of the feeding box to divide the feeding box into four feeding areas, a discharging pipe penetrating through the partition plate is arranged at the lower end of each feeding area, a feeding port mutually communicated with the feeding box is formed in the upper end of the tank body, and a discharging port is formed in the lower end of the tank body;
the partition board is provided with an annular through groove, a positioning ring is rotationally arranged in the through groove, first grooves are formed in two inner side walls of the through groove, second grooves which are aligned with the first grooves respectively are formed in two side walls of the positioning ring, the first grooves and the second grooves are buckled to form ball grooves, ball bodies are filled in the ball grooves, mounting holes which are mutually communicated with the first grooves are formed in the upper end of the partition board, a limiting block is connected to the inner wall of each mounting hole in a threaded manner, the positioning ring penetrates through a through hole which is convenient for a discharging pipe to pass through along the thickness direction, and a lower pipe of the discharging pipe penetrates through the positioning ring and is provided with a valve;
the feeding box is cylindrical, a toothed ring is sleeved on the outer wall of the feeding box, a driving motor is arranged at the upper end of the partition plate, a driving wheel is sleeved on a driving shaft of the driving motor, the driving wheel and the toothed ring are meshed with each other, an annular first guide groove is arranged at the upper end of the partition plate, a second guide groove aligned with the first guide groove is arranged on the bottom wall of the lower end of the feeding box, and a plurality of guide balls are arranged between the first guide groove and the second guide groove;
the stirring assembly comprises a sleeve shaft, a positioning plate, a connecting rod, a first stirring blade and a second stirring blade; the upper end of the stirring shaft penetrates through the outer wall of the tank body and is connected with a servo motor, the sleeve shaft is arranged on the stirring shaft, the sleeve shaft is positioned in the stirring cavity, the positioning plate is arranged below the tank body, the lower ends of the stirring shaft and the sleeve shaft penetrate through the lower end of the tank body and are rotationally connected with the positioning plate, the lower end of the sleeve shaft is provided with a driving component, the upper end of the connecting rod is mutually connected with the stirring shaft, the lower end of the connecting rod is arranged in a suspension manner, a plurality of first stirring blades are arranged, one end of each first stirring blade is connected with the side wall of the connecting rod, the two other ends of each first stirring blade are arranged in a suspension manner, a gap is arranged between every two adjacent first stirring blades, the number of the second stirring blades is multiple, a first sleeve shaft of each second stirring blade is connected with a sleeve shaft, the other end of each second stirring blade is suspended in the air, and the first stirring blades and the second stirring blades are arranged in a staggered mode;
the driving assembly comprises a first belt pulley, a second belt pulley, a triangular belt and a belt motor; first belt pulley cover is established on the cover axle and is located jar body below, the lower extreme outer wall at jar body is installed to the belt motor, the second belt pulley cover is established in the pivot of belt motor, first belt pulley and second belt pulley pass through V belt interconnect.
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| CN115254243B (en) * | 2022-08-18 | 2024-01-16 | 福建顺成面业发展股份有限公司 | Preparation method of wheat bran capable of preparing edible powder |
| CN116574313A (en) * | 2023-05-26 | 2023-08-11 | 齐鲁工业大学(山东省科学院) | Waterproof starch-based straw and preparation method thereof |
| CN116492071B (en) * | 2023-06-25 | 2023-09-05 | 南昌红谷滩普瑞眼科医院有限责任公司 | Auxiliary device for operation |
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