CN110916193A - Preparation method of selenium-rich food additive - Google Patents

Preparation method of selenium-rich food additive Download PDF

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Publication number
CN110916193A
CN110916193A CN201911204189.5A CN201911204189A CN110916193A CN 110916193 A CN110916193 A CN 110916193A CN 201911204189 A CN201911204189 A CN 201911204189A CN 110916193 A CN110916193 A CN 110916193A
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China
Prior art keywords
box
air
rod
selenium
heating cylinder
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CN201911204189.5A
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Chinese (zh)
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陈伟
徐亚琴
刘玉婷
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陈伟
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Priority to CN201911204189.5A priority Critical patent/CN110916193A/en
Publication of CN110916193A publication Critical patent/CN110916193A/en
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A23B - A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A23L33/16Inorganic salts, minerals or trace elements
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/005Cultivation methods
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00Tea; Tea substitutes; Preparations thereof
    • A23F3/06Treating tea before extraction; Preparations produced thereby
    • A23F3/14Tea preparations, e.g. using additives
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

Abstract

The invention belongs to the field of preparation methods of food additives, and particularly relates to a preparation method of a selenium-rich food additive, wherein a baking box adopted by the method comprises a box body; the bottom of the box body is provided with a heating cylinder; an air disk is connected in the heating cylinder in a sliding way; the bottom of the ventilation disc is fixedly connected with a first rod, and the bottom of the first rod is hinged with a second rod; the middle part of the second rod is hinged with a support fixedly connected with the bottom of the box body; the bottom of the box body is fixedly connected with an arc-shaped chain wheel, and grooves are uniformly formed in one side of the chain wheel, which is close to the second rod; one end of the second rod, which is far away from the first rod, is provided with a sliding hole, a sliding column is connected in the sliding hole in a sliding manner, and one side of the heating cylinder is provided with a fuel pipe which is obliquely arranged; according to the tea leaf drying device, the baking state of tea leaves is sensed through the observation hole, then the second rod is rotated to be matched with the sliding column and the groove, so that the second rod drives the first rod, the ventilating plate is further driven to slide in the heating cylinder, the supply of fire coal particles in the heating cylinder is controlled, the temperature in the furnace is finally controlled, and the drying quality and efficiency of the tea leaves are guaranteed.

Description

Preparation method of selenium-rich food additive
Technical Field
The invention belongs to the field of preparation methods of food additives, and particularly relates to a preparation method of a selenium-rich food additive.
Background
Selenium is a trace element necessary for human and animals, has multiple biological functions of cancer resistance, oxidation resistance and the like, and is proved to be caused by selenium deficiency by medical research on human Kashin-Beck disease, keshan disease and white muscle disease of livestock, and the research shows that the improvement of the selenium intake level through daily diet is considered to be the safest selenium supplement mode at present.
At present, the selenium-enriched food additive is mainly prepared by converting inorganic selenium into organic selenium through a plant seed bud method, collecting bud seedlings for direct drying treatment or extracting protein. The invention aims to provide a preparation method of a selenium-rich food additive, which can overcome the defects in the prior art, the selenium-rich tea is used and then mixed with vegetable powder to prepare the green, safe and nutrient-rich food additive, the preparation method is simple and easy to operate, the production cost is low, the large-scale production is convenient, the selenium content in the food additive is greatly improved, but the production efficiency of the traditional manual charcoal fire drying is low in the tea drying process, and the carbon aroma generated in the charcoal fire drying process is reserved when underwear is dried by adopting an electric heating method.
Disclosure of Invention
In order to make up the defects of the prior art and solve the problems that after inorganic selenium is converted into organic selenium by a plant seed bud method, bud seedlings are collected and directly dried or the selenium-rich food additive is prepared by a protein extraction method, the produced food additive has single nutrient content and taste and cannot meet the requirements of the majority of people, when tea leaves are added to improve the selenium content of the selenium-rich food, the production efficiency of traditional manual charcoal fire drying is low in the drying process of the tea leaves, and the carbon aroma of underwear dried by charcoal fire is reserved by adopting an electric heating method.
The technical scheme adopted by the invention for solving the technical problems is as follows: the preparation method of the selenium-rich food additive comprises the following steps:
s1, cultivating selenium-rich tea: spraying selenite or selenate culture solution on tea leaves or in soil for growth of the tea leaves, spraying for 1-2 times every day, and continuously spraying until one day before picking new leaves, wherein the soil is selenium-rich soil or common soil; the concentration of the selenite or selenate culture solution is 100-200 mg/L;
s2, preparing selenium-rich tea powder: placing the selenium-rich tea obtained in the step S1 in a baking oven, baking at a high temperature of 180-200 ℃, and grinding to obtain selenium-rich tea powder;
s3, preparing vegetable powder: baking and grinding the vegetable leaves at a high temperature of 180-200 ℃ to obtain plant powder; the particle size of the selenium-rich tea powder and the plant powder is 100-150 meshes;
s4, uniformly mixing the selenium-rich tea powder obtained in the step S2 and the vegetable powder obtained in the step S3 according to the weight part ratio of 3-57-12 to obtain the selenium-rich food additive;
the baking box adopted in the invention comprises a cylindrical box body; the bottom of the box body is provided with support legs, the top of the box body is provided with an inlet and an outlet for placing and taking tea leaves, a top cover is arranged on the inlet and the outlet, the center of the top cover is provided with an observation hole, and the upper part of the top cover is provided with a pair of handles; the bottom of the box body is provided with a heating cylinder with openings at two ends, and the heating cylinder penetrates through the bottom of the box body and extends to the outside of the box body; an air-through disc is connected in the heating cylinder in a sliding manner, and a group of air holes are uniformly distributed on the air-through disc; the bottom of the first rod is hinged with a second rod which is horizontally arranged; the middle part of the second rod is hinged with a support fixedly connected with the bottom of the box body; an arc-shaped chain wheel is fixedly connected to the bottom of the box body and the position, corresponding to one end of the second rod, far away from the first rod, and grooves are uniformly formed in one side, close to the second rod, of the chain wheel; a sliding hole is formed in one end, far away from the first rod, of the second rod, a sliding column is connected in the sliding hole in a sliding mode, and a spring is arranged between the sliding column and the bottom of the sliding hole; one end of the sliding column close to the chain wheel is matched with the groove; one side of the heating cylinder is provided with a fuel pipe which is obliquely arranged, one end of the fuel pipe is communicated with the inner wall of the heating cylinder, and the other end of the fuel pipe penetrates through the box body; a fuel bin for storing fire coal is arranged at the position of the periphery of the box body corresponding to the fuel pipe; a soaking plate is fixedly connected to the inner wall of the box body above the heating cylinder, a support column is fixedly connected to the top of the soaking plate, and a group of circular baking trays for containing tea leaves are mounted on the support column; the coal feeding amount in the heating cylinder is controlled by adjusting the angle of the second rod, so that the heating temperature in the box body is controlled, and the drying quality and efficiency of the tea leaves are further ensured; when the tea leaf baking device is used, the top cover is opened through the handle, tea leaves are uniformly spread on the baking tray, the top cover is covered, crushed coal-fired particles are added into the fuel bin, the coal-fired particles flow into the ventilation tray in the heating cylinder through the fuel pipe, when the height of the coal-fired particles on the ventilation tray is higher than that of the fuel pipe at the outlet of the heating cylinder, the coal-fired particles stop falling, the coal-fired particles are ignited through the ignition device at the moment, the tea leaves on the baking tray can be baked, at the moment, a worker stretches into the baking tray through the observation hole, the baking state of the tea leaves is sensed through fingers, then the sliding column and the groove are matched through rotating the second rod, the first rod is driven by the second rod, the ventilation plate is driven to slide in the heating cylinder, the supply of the coal-fired particles in the heating cylinder is controlled, the temperature in the heating cylinder.
Preferably, the top of the fuel bin is provided with a bin cover, and the bin cover is in sealing connection with the fuel bin; a miniature blower is arranged above the bin cover and is driven by a speed regulating motor, and the speed regulating motor is communicated with a power supply through a controller; positive pressure air is introduced into the fuel pipe, so that combustion of fire coal in the fuel pipe is avoided, the temperature in the box body is further controlled, and the drying quality and efficiency of the tea leaves are further ensured; through the cang gai with bunker sealing connection, the cooperation air-blower carries out the gas blowing to the bunker for the air in the fuel pipe remains the malleation throughout, and then avoids the fire coal granule in the intercommunication bunker to be ignited by the cartridge heater in the fuel pipe, thereby the temperature risees in the control box, guarantees that tealeaves is in suitable baking temperature, further guarantees the oven-dry mass and the efficiency of tealeaves.
Preferably, the soaking plate is funnel-shaped, and a group of first holes are uniformly formed in the soaking plate; the diameter of the first hole is gradually increased from the center of the soaking plate to the outside, so that the heat is reduced to be concentrated in the middle of the box body, the tea leaves are uniformly heated, and the drying quality and efficiency of the tea leaves are further ensured; through the soaking plate of infundibulate, utilize the higher air of box middle part temperature in the box of thermal convection homodisperse, cooperate the diameter simultaneously by soaking plate center outwards gradually crescent a hole for the hot-air rising speed at box central part reduces, further reduces the high-temperature gas at box middle part and concentrates, and then makes every overware evenly heated in the box, further increases the efficiency of baking of tealeaves, and then further guarantees the oven-dry mass and the efficiency of tealeaves.
Preferably, a group of arc-shaped air-inducing copper pipes are uniformly distributed on the inner circumference of the box body, and the air-inducing copper pipes penetrate through the first holes; the bottom end of the air induction copper pipe penetrates through the side wall of the box body and is communicated with the outside atmosphere, and the upper end of the air induction copper pipe penetrates through the baking tray; the air inducing copper pipe between the adjacent baking trays is communicated with a transverse air pipe which is communicated with the interior of the box body; the heat at the lower part of the box body is quickly transferred to the position near the baking tray at the upper part of the box body through the air-inducing copper pipe, so that the uniformity of the temperature in the box body is further improved, and the drying quality and efficiency of the tea leaves are further improved; absorb the heat of bottom half through the induced air copper pipe, later heat the air in the induced air copper pipe for air in the induced air copper pipe is discharged from the breather pipe at induced air copper pipe top after being heated, later with heat transfer to the tealeaves in the overware, thereby further reduce the temperature of lower part tealeaves, promote the temperature of upper portion tealeaves simultaneously, make the temperature of the inside upper and lower part of box more balanced, further increase the oven-dry mass and the efficiency of tealeaves.
Preferably, the length of the vent pipe is gradually shortened from top to bottom, a group of downward air injection holes are formed in the vent pipe, hot air is injected downwards through the air injection holes, the heating effect of the hot air on the tea is further improved, and the drying quality and efficiency of the tea are further improved; because breather pipe length shortens from top to bottom gradually for near more steam is carried the overware on upper portion in the box, further the temperature of each overware, and the fumarole that cooperates the opening down simultaneously further increases the dwell time of hot-air in overware department, and then increases hot-air's utilization and efficiency, further saves the coal granule of burning, increases the oven-dry mass and the efficiency of tealeaves simultaneously.
Preferably, one side of the air injection hole is connected with an air disturbing sheet through a pull rope, and the uniformity of differential pressure heating is further increased through disturbance of the air disturbing sheet on air flow, so that the drying quality and efficiency of the tea leaves are further increased; when the hot air of fumarole spun flowed through the wind piece, the wind piece was blown, and then disturbed the spun air current, and then reduced the wind speed of fumarole spun air current, further increased the homodisperse of hot air, and then further increased the oven-dry mass and the efficiency of tealeaves.
The invention has the following beneficial effects:
1. according to the preparation method of the selenium-rich food additive, the baking state of tea leaves is sensed through the observation hole, then the second rod is rotated to drive the first rod by matching with the sliding column and the groove, so that the ventilation plate is driven to slide in the heating cylinder, the supply of coal-fired particles in the heating cylinder is controlled, the temperature in the furnace is finally controlled, and the drying quality and efficiency of the tea leaves are guaranteed.
2. According to the preparation method of the selenium-rich food additive, the bin cover in sealing connection with the fuel bin is matched with the air blower to blow air to the fuel bin, so that the air in the fuel pipe is always kept at positive pressure, and further, fire coal particles communicated with the fuel bin in the fuel pipe are prevented from being ignited by the heating cylinder, so that the temperature in the box body is controlled to rise, the tea leaves are ensured to be at a proper baking temperature, and the drying quality and efficiency of the tea leaves are further ensured.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a perspective view of a baking oven employed in the present invention;
FIG. 3 is a cross-sectional view of a baking oven employed in the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at B;
in the figure: the device comprises a box body 1, a top cover 11, an observation hole 12, a handle 13, a heating cylinder 14, a ventilation plate 15, a ventilation hole 16, a first rod 17, a second rod 18, a support 19, a dental plate 20, a groove 21, a sliding hole 22, a sliding column 23, a fuel pipe 24, a fuel bin 25, a soaking plate 26, a supporting column 27, a baking tray 28, a bin cover 3, a blower 31, a first hole 29, an air inducing copper pipe 4, a ventilation pipe 41, an air injection hole 42 and an air disturbing sheet 43.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the preparation method of the selenium-rich food additive of the invention comprises the following steps:
s1, cultivating selenium-rich tea: spraying selenite or selenate culture solution on tea leaves or in soil for growth of the tea leaves, spraying for 1-2 times every day, and continuously spraying until one day before picking new leaves, wherein the soil is selenium-rich soil or common soil; the concentration of the selenite or selenate culture solution is 100-200 mg/L;
s2, preparing selenium-rich tea powder: placing the selenium-rich tea obtained in the step S1 in a baking oven, baking at a high temperature of 180-200 ℃, and grinding to obtain selenium-rich tea powder;
s3, preparing vegetable powder: baking and grinding the vegetable leaves at a high temperature of 180-200 ℃ to obtain plant powder; the particle size of the selenium-rich tea powder and the plant powder is 100-150 meshes;
s4, uniformly mixing the selenium-rich tea powder obtained in the step S2 and the vegetable powder obtained in the step S3 according to the weight part ratio of 3-57-12 to obtain the selenium-rich food additive;
the baking box adopted in the invention comprises a cylindrical box body 1; the bottom of the box body 1 is provided with support legs, the top of the box body 1 is provided with an inlet and an outlet for placing and taking tea leaves, the inlet and the outlet are provided with top covers 11, the center of each top cover 11 is provided with an observation hole 12, and the upper parts of the top covers 11 are provided with a pair of handles 13; the bottom of the box body 1 is provided with a heating cylinder 14 with openings at two ends, and the heating cylinder 14 penetrates through the bottom of the box body 1 and extends to the outside of the box body 1; an air-vent disc 15 is connected in the heating cylinder 14 in a sliding manner, and a group of air vents 16 are uniformly distributed on the air-vent disc 15; the bottom of the ventilating disc 15 is fixedly connected with a first rod 17 which is vertically arranged, and the bottom of the first rod 17 is hinged with a second rod 18 which is horizontally arranged; the middle part of the second rod 18 is hinged with a support 19 fixedly connected with the bottom of the box body 1; an arc-shaped chain wheel 20 is fixedly connected to the bottom of the box body 1 and the position, corresponding to one end of the second rod 18 far away from the first rod 17, and grooves 21 are uniformly formed in one side, close to the second rod 18, of the chain wheel 20; a sliding hole 22 is formed in one end, far away from the first rod 17, of the second rod 18, a sliding column 23 is connected in the sliding hole 22 in a sliding mode, and a spring is arranged between the sliding column 23 and the bottom of the sliding hole 22; one end of the sliding column 23 close to the chain wheel 20 is matched with the groove 21; one side of the heating cylinder 14 is provided with a fuel pipe 24 which is obliquely arranged, one end of the fuel pipe 24 is communicated with the inner wall of the heating cylinder 14, and the other end of the fuel pipe 24 penetrates through the box body 1; a fuel bin 25 for storing fire coal is arranged at the position of the periphery of the box body 1 corresponding to the fuel pipe 24; a soaking plate 26 is fixedly connected to the inner wall of the box body 1 above the heating barrel 14, a supporting column 27 is fixedly connected to the top of the soaking plate 26, and a group of circular baking trays 28 for containing tea leaves are mounted on the supporting column 27; the coal feeding amount in the heating cylinder 14 is controlled by adjusting the angle of the second rod 18, so that the heating temperature in the box body 1 is controlled, and the drying quality and efficiency of the tea leaves are further ensured; when in use, the top cover 11 is opened through the handle 13, then the tea leaves are evenly spread on the baking tray 28, then the top cover 11 is covered, pulverized coal particles are added to the bunker 25, the coal particles flow through the fuel pipe 24 to the aeration disk 15 in the cartridge heater 14, when the height of the fire coal particles on the aeration disc 15 is higher than that of the fuel pipe 24 at the outlet of the heating cylinder 14, the fire coal particles stop falling, at this time, the fire coal particles are ignited by the ignition device, the tea leaves on the baking tray 28 can be baked, at this time, the worker can extend into the baking tray 28 through the observation hole 12, the baking state of the tea leaves is sensed by fingers, then the second rod 18 is rotated to be matched with the sliding column 23 and the groove 21, so that the first rod 17 is driven by the second rod 18, and then drive the ventilating board and slide in heating cylinder 14, the supply of the coal burning granule in the control heating cylinder 14 finally controls the stove temperature, guarantees the oven-drying quality and the efficiency of tealeaves.
As an embodiment of the invention, the top of the fuel bin 25 is provided with a bin cover 3, and the bin cover 3 is hermetically connected with the fuel bin 25; a miniature blower 31 is arranged above the bin cover 3, the blower 31 is driven by a speed regulating motor, and the speed regulating motor is communicated with a power supply through a controller; positive pressure air is introduced into the fuel pipe 24, so that combustion of fire coal in the fuel pipe 24 is avoided, the temperature in the box body 1 is further controlled, and the drying quality and efficiency of the tea leaves are further ensured; through the cang gai 3 with bunker 25 sealing connection, cooperation air-blower 31 carries out the gassing to bunker 25 for the air in fuel pipe 24 remains the malleation throughout, and then avoids communicating the fire coal granule in bunker 25 in the fuel pipe 24 to be ignited by cartridge heater 14, thereby temperature rising in the control box 1, guarantees that tealeaves is in suitable temperature of baking, further guarantees the oven-dry mass and the efficiency of tealeaves.
As an embodiment of the present invention, the soaking plate 26 is funnel-shaped, and a group of first holes 29 are uniformly formed on the soaking plate 26; the diameter of the first hole 29 is gradually increased from the center of the soaking plate 26 to the outside, so that the heat is reduced to be concentrated in the middle of the box body 1, the tea leaves are uniformly heated, and the drying quality and efficiency of the tea leaves are further ensured; through the soaking plate 26 of infundibulate, utilize the higher air of box 1 middle part temperature in the box 1 of thermal convection homodisperse, cooperate the diameter simultaneously by soaking plate 26 center outwards gradually crescent a hole 29, make the hot air rising speed at box 1 central part reduce, the high-temperature gas who further reduces box 1 middle part is concentrated, and then make every overware 28 evenly heated in the box 1, further increase the efficiency of baking of tealeaves, and then further guarantee the oven-dry mass and the efficiency of tealeaves.
As an embodiment of the invention, a group of arc-shaped air-inducing copper pipes 4 are uniformly distributed on the inner circumference of the box body 1, and the air-inducing copper pipes 4 penetrate through the first hole 29; the bottom end of the air-inducing copper pipe 4 penetrates through the side wall of the box body 1 and is communicated with the outside atmosphere, and the upper end of the air-inducing copper pipe 4 penetrates through the baking tray 28; the air inducing copper pipe 4 between the adjacent baking trays 28 is communicated with a transverse vent pipe 41, and the vent pipe 41 is communicated with the interior of the box body 1; the heat at the lower part of the box body 1 is quickly transferred to the vicinity of the baking tray 28 at the upper part of the box body 1 through the air-inducing copper pipe 4, so that the uniformity of the temperature in the box body 1 is further improved, and the drying quality and efficiency of the tea leaves are further improved; absorb the heat of box 1 bottom through induced air copper pipe 4, later heat the air in the induced air copper pipe 4 for the air in the induced air copper pipe 4 is discharged from the breather pipe 41 at induced air copper pipe 4 top after being heated, later with on heat transfer to the tealeaves in overware 28, thereby further reduce the temperature of lower part tealeaves, promote the temperature of upper portion tealeaves simultaneously, make the temperature of the inside upper and lower part of box 1 more balanced, further increase the drying quality and the efficiency of tealeaves.
As an embodiment of the present invention, the length of the vent pipe 41 is gradually shortened from top to bottom, and a group of downward air injection holes 42 are formed on the vent pipe 41, so that hot air is injected downward through the air injection holes 42, the heating effect of the hot air on the tea leaves is further increased, and the drying quality and efficiency of the tea leaves are further increased; because the length of the vent pipe 41 is gradually shortened from top to bottom, more hot air is conveyed to the positions near the baking trays 28 at the upper part in the box body 1, the temperature of each baking tray 28 is further balanced, meanwhile, the air injection holes 42 with downward openings are matched, the retention time of the hot air at the positions of the baking trays 28 is further increased, the utilization and the efficiency of the hot air are further increased, the fire coal particles are further saved, and the drying quality and the drying efficiency of the tea leaves are increased.
As an embodiment of the invention, one side of the air injection hole 42 is connected with an air disturbing sheet 43 through a pull rope, and the uniformity of differential pressure heating is further increased through the disturbance of the air disturbing sheet 43 to the air flow, so that the drying quality and efficiency of the tea leaves are further increased; when the hot air ejected from the air jet holes 42 flows through the air disturbing sheet 43, the air disturbing sheet 43 is blown, and then the ejected air flow is disturbed, so that the air speed of the air flow ejected from the air jet holes 42 is reduced, the uniform dispersion of the hot air is further increased, and the drying quality and efficiency of the tea leaves are further increased.
When in use, the top cover 11 is opened through the handle 13, then the tea leaves are evenly spread on the baking tray 28, then the top cover 11 is covered, pulverized coal particles are added to the bunker 25, the coal particles flow through the fuel pipe 24 to the aeration disk 15 in the cartridge heater 14, when the height of the fire coal particles on the aeration disc 15 is higher than that of the fuel pipe 24 at the outlet of the heating cylinder 14, the fire coal particles stop falling, at this time, the fire coal particles are ignited by the ignition device, the tea leaves on the baking tray 28 can be baked, at this time, the worker can extend into the baking tray 28 through the observation hole 12, the baking state of the tea leaves is sensed by fingers, then the second rod 18 is rotated to be matched with the sliding column 23 and the groove 21, so that the first rod 17 is driven by the second rod 18, the ventilating plate is driven to slide in the heating cylinder 14, the supply of fire coal particles in the heating cylinder 14 is controlled, the temperature in the furnace is finally controlled, and the drying quality and efficiency of the tea leaves are ensured; the bin cover 3 hermetically connected with the fuel bin 25 is matched with the air blower 31 to blow air into the fuel bin 25, so that the air in the fuel pipe 24 is always kept at positive pressure, and further coal particles communicated with the fuel bin 25 in the fuel pipe 24 are prevented from being ignited by the heating cylinder 14, so that the temperature in the box body 1 is controlled to rise, the tea leaves are ensured to be at proper baking temperature, and the drying quality and efficiency of the tea leaves are further ensured; through the funnel-shaped soaking plate 26, air with higher temperature in the middle of the box body 1 is uniformly dispersed into the box body 1 by utilizing heat convection, and meanwhile, the diameter of the first hole 29 gradually increasing from the center of the soaking plate 26 outwards is matched, so that the rising speed of the hot air in the center of the box body 1 is reduced, the concentration of high-temperature gas in the middle of the box body 1 is further reduced, each baking tray 28 in the box body 1 is uniformly heated, the baking efficiency of tea is further increased, and the drying quality and efficiency of the tea are further ensured; the heat at the bottom of the box body 1 is absorbed by the air inducing copper pipe 4, then the air in the air inducing copper pipe 4 is heated, the air in the air inducing copper pipe 4 is discharged from the vent pipe 41 at the top of the air inducing copper pipe 4 after being heated, and then the heat is transferred to the tea leaves in the baking tray 28, so that the temperature of the tea leaves at the lower part is further reduced, meanwhile, the temperature of the tea leaves at the upper part is increased, the temperature of the upper part and the lower part in the box body 1 is more balanced, and the drying quality and the drying efficiency of the tea leaves are further increased; because the length of the vent pipe 41 is gradually shortened from top to bottom, more hot air is conveyed to the position near the baking trays 28 at the upper part in the box body 1, the temperature of each baking tray 28 is further balanced, and meanwhile, the retention time of the hot air at the baking trays 28 is further increased by matching with the air jet holes 42 with downward openings, so that the utilization and the efficiency of the hot air are further increased, the fire coal particles are further saved, and the drying quality and the drying efficiency of the tea leaves are increased; when the hot air ejected from the air jet holes 42 flows through the air disturbing sheet 43, the air disturbing sheet 43 is blown, and then the ejected air flow is disturbed, so that the air speed of the air flow ejected from the air jet holes 42 is reduced, the uniform dispersion of the hot air is further increased, and the drying quality and efficiency of the tea leaves are further increased.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A preparation method of a selenium-rich food additive is characterized by comprising the following steps: the method comprises the following steps:
s1, cultivating selenium-rich tea: spraying selenite or selenate culture solution on tea leaves or in soil for growth of the tea leaves, spraying for 1-2 times every day, and continuously spraying until one day before picking new leaves, wherein the soil is selenium-rich soil or common soil; the concentration of the selenite or selenate culture solution is 100-200 mg/L;
s2, preparing selenium-rich tea powder: placing the selenium-rich tea obtained in the step S1 in a baking oven, baking at a high temperature of 180-200 ℃, and grinding to obtain selenium-rich tea powder;
s3, preparing vegetable powder: baking and grinding the vegetable leaves at a high temperature of 180-200 ℃ to obtain plant powder; the particle size of the selenium-rich tea powder and the plant powder is 100-150 meshes;
s4, uniformly mixing the selenium-rich tea powder obtained in the step S2 and the vegetable powder obtained in the step S3 according to the weight part ratio of 3-57-12 to obtain the selenium-rich food additive;
the baking box adopted by the invention comprises a cylindrical box body (1); the tea box is characterized in that support legs are arranged at the bottom of the box body (1), an inlet and an outlet for placing and taking tea are formed in the top of the box body (1), a top cover (11) is arranged on the inlet and the outlet, an observation hole (12) is formed in the center of the top cover (11), and a pair of handles (13) is arranged on the upper portion of the top cover (11); the bottom of the box body (1) is provided with a heating cylinder (14) with two open ends, and the heating cylinder (14) penetrates through the bottom of the box body (1) and extends to the outside of the box body (1); an air-through disc (15) is connected in the heating cylinder (14) in a sliding manner, and a group of air holes (16) are uniformly distributed on the air-through disc (15); the bottom of the ventilation disc (15) is fixedly connected with a first rod (17) which is vertically arranged, and the bottom of the first rod (17) is hinged with a second rod (18) which is horizontally arranged; the middle part of the second rod (18) is hinged with a support (19) fixedly connected with the bottom of the box body (1); an arc-shaped chain wheel (20) is fixedly connected to the bottom of the box body (1) and the corresponding position of one end, far away from the first rod (17), of the second rod (18), and grooves (21) are uniformly formed in one side, close to the second rod (18), of the chain wheel (20); one end of the second rod (18) far away from the first rod (17) is provided with a sliding hole (22), a sliding column (23) is connected in the sliding hole (22) in a sliding mode, and a spring is arranged between the sliding column (23) and the bottom of the sliding hole (22); one end of the sliding column (23) close to the chain wheel (20) is matched with the groove (21); one side of the heating cylinder (14) is provided with a fuel pipe (24) which is obliquely arranged, one end of the fuel pipe (24) is communicated with the inner wall of the heating cylinder (14), and the other end of the fuel pipe (24) penetrates through the box body (1); a fuel bin (25) for storing fire coal is arranged at the position, corresponding to the fuel pipe (24), of the periphery of the box body (1); a soaking plate (26) is fixedly connected to the inner wall of the box body (1) above the heating cylinder (14), a supporting column (27) is fixedly connected to the top of the soaking plate (26), and a group of circular baking trays (28) for containing tea leaves are mounted on the supporting column (27); the coal feeding amount in the heating cylinder (14) is controlled by adjusting the angle of the second rod (18), so that the heating temperature in the box body (1) is controlled, and the drying quality and efficiency of the tea leaves are guaranteed.
2. The method for preparing the selenium-enriched food additive according to claim 1, wherein the method comprises the following steps: the top of the fuel bin (25) is provided with a bin cover (3), and the bin cover (3) is hermetically connected with the fuel bin (25); a miniature blower (31) is arranged above the bin cover (3), the blower (31) is driven by a speed regulating motor, and the speed regulating motor is communicated with a power supply through a controller; positive pressure air is introduced into the fuel pipe (24), so that coal burning in the fuel pipe (24) is avoided, the temperature in the box body (1) is further controlled, and the drying quality and efficiency of the tea leaves are further ensured.
3. The method for preparing the selenium-enriched food additive according to claim 1, wherein the method comprises the following steps: the soaking plate (26) is funnel-shaped, and a group of first holes (29) are uniformly formed in the soaking plate (26); the diameter of the first hole (29) is gradually increased outwards from the center of the soaking plate (26), so that the heat is reduced and concentrated in the middle of the box body (1), the tea leaves are uniformly heated, and the drying quality and efficiency of the tea leaves are further guaranteed.
4. The method for preparing the selenium-enriched food additive according to claim 3, wherein the method comprises the following steps: a group of arc air-inducing copper pipes (4) are uniformly distributed on the inner circumference of the box body (1), and the air-inducing copper pipes (4) penetrate through the first hole (29); the bottom end of the air-inducing copper pipe (4) penetrates through the side wall of the box body (1) and is communicated with the outside atmosphere, and the upper end of the air-inducing copper pipe (4) penetrates through the baking tray (28); a transverse vent pipe (41) is communicated with the air inducing copper pipe (4) between the adjacent baking trays (28), and the vent pipe (41) is communicated with the interior of the box body (1); the heat at the lower part of the box body (1) is quickly transferred to the position near the baking tray (28) at the upper part of the box body (1) through the air-inducing copper pipe (4), so that the uniformity of the temperature in the box body (1) is further improved, and the drying quality and efficiency of the tea leaves are further improved.
5. The method for preparing the selenium-enriched food additive according to claim 4, wherein the method comprises the following steps: breather pipe (41) length from top to bottom shortens gradually, and has seted up a set of fumarole (42) down on breather pipe (41), through fumarole (42) blowout steam down, further increases the heating effect of steam to tealeaves, and then further increases the drying quality and the efficiency of tealeaves.
6. The method for preparing the selenium-enriched food additive according to claim 5, wherein the method comprises the following steps: one side of the air injection hole (42) is connected with an air disturbing sheet (43) through a pull rope, the uniformity of differential pressure heating is further increased through the disturbance of the air disturbing sheet (43) to air flow, and then the drying quality and efficiency of tea leaves are further increased.
CN201911204189.5A 2019-11-29 2019-11-29 Preparation method of selenium-rich food additive Withdrawn CN110916193A (en)

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CN201911204189.5A CN110916193A (en) 2019-11-29 2019-11-29 Preparation method of selenium-rich food additive

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Application Number Priority Date Filing Date Title
CN201911204189.5A CN110916193A (en) 2019-11-29 2019-11-29 Preparation method of selenium-rich food additive

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CN110916193A true CN110916193A (en) 2020-03-27

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Country Link
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Application publication date: 20200327