CN1815117A - Vacuum drum drying machine - Google Patents
Vacuum drum drying machine Download PDFInfo
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- CN1815117A CN1815117A CN 200610038660 CN200610038660A CN1815117A CN 1815117 A CN1815117 A CN 1815117A CN 200610038660 CN200610038660 CN 200610038660 CN 200610038660 A CN200610038660 A CN 200610038660A CN 1815117 A CN1815117 A CN 1815117A
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- vacuum
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- roller drier
- drying drum
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Abstract
Present invention discloses a vacuum roller drier. It includes drying drum, scraper device and feeder, wherein said drying drum, scraper device and feeder set in inclosed vacuum hood whose lower part hermetically connected with collection hopper, lower end of said collection hopper connected with buffer discharge hopper through aggregate seal valve, said vacuum hood set with pumping out pipe connection seat. Material outlet of Said buffer discharge hopper is installed start-stop bleeder valve. Pumping out pipe connection seat of said vacuum hood is connected with vacuum pump through pumping out pipe. Said vacuum roller drier has simple structure, high thermal efficiency and quick drying speed, and can be widely used in dryness suitable for protein, saccharide, fruit juice and yeast etc thermosensitive substance.
Description
Technical field
The present invention relates to a kind of food drying machinery, in particular for the drum drying equipment of thermal sensitivity food materials such as protein, fruit juice, yeast and carbohydrate.
Background technology
Roller drier is a kind of in the conduction heat transfer mode, and liquid material or the slurry that is attached to simplified outer wall heated, and makes it the constant pressure and dry equipment of moisture vaporization.Because the heat transfer type of roller drier is from inside to outside, and cloth is even, the bed of material is thin, and thermograde is big, and heat utilization efficiency reaches 70%-80%, so roller drier is widely used in the food drying.
Yet along with the variation of human diet structure and the progress of food industry, the demand of heat sensitive materials such as protein, carbohydrate constantly increases, and quality requirements improves day by day.But because these heat sensitive materials are easy to decomposition, polymerization and rotten in the high temperature drying situation, desirable baking temperature should not surpass even also will be significantly less than 100 ℃, and the baking temperature of roller drier commonly used is nearly all more than boiling point, very easily making materials such as protein, carbohydrate produce sex change destroys, be difficult to realize good quality and high output, this with regard to significant limitation the range of application of roller drier and the performance of usefulness.Adopt spray drying process, exist investment huge again, the deficiency that production cost is high, simultaneous spray drying also can't solve the dry problem of plaster material.Therefore, according to the new development trend of China's food industry and agricultural byproducts processing, particularly the demand of protein resource comprehensive utilization presses for a kind of thermal efficiency height, the drying equipment of dried material quality better.
In sum, the drying of thermal sensitivity food materials such as protein, carbohydrate should have the higher thermal efficiency, to reduce energy consumption for drying; Strict again control baking temperature obtaining high-quality dried material, thereby has different characteristics and designing requirement with common drying machinery.Up to now, designer of the present invention still finds no closes under the relative cryogenic conditions, the drum drying equipment of energy highly effective drying thermal sensitivity food material.
Summary of the invention
At the above-mentioned deficiency of existing in prior technology, technical problem to be solved by this invention provides a kind of vacuum roller drier, it not only has thermal efficiency height, rate of drying is fast, and can satisfy the dry requirement of heat sensitive materials such as protein, carbohydrate, and the quality of dried material is good.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is a kind of vacuum roller drier, and it comprises drying drum, doctor blade device and loader, and described drying drum, doctor blade device and loader all are arranged in the enclosed vacuum cover; End opening at this vacuum (-tight) housing is connected with aggregate bin hermetically, and this aggregate bin lower end is connected with the buffering discharge bucket by the able to turn on or off seal valve that gathers materials; Also be provided with the evacuation tube Connection Block on the described vacuum (-tight) housing.
The discharging opening of described buffering discharge bucket is equipped with able to turn on or off bleeder valve.
Evacuation tube Connection Block on the described vacuum (-tight) housing is connected with vavuum pump by evacuation tube.
The below of described drying drum is provided with feed chute, and this feed chute is positioned at vacuum (-tight) housing.
After adopting said structure, because drying devices such as drying drum, doctor blade device and loader are arranged in the enclosed vacuum cover, vacuum (-tight) housing connects to vavuum pump by the pipeline of finding time again, when the vacuum roller drier is worked, vavuum pump is evacuated to certain vacuum with the air pressure in the vacuum (-tight) housing, thereby makes material carry out drying process under vacuum state.So on the one hand, under vacuum state, the boiling point of water reduces, and has avoided the destruction of the nutritional labeling under the high-temperature condition, vitamin etc. effectively, has also improved dry materials speed simultaneously widely; On the other hand in vacuum environment, the content of air significantly is lower than the content in the atmosphere in the unit volume, under this relative anoxic environment, carry out food drying, alleviate even avoid the deterioration of oxidation chance, pigment brown stain or other the dried material qualities such as oxidation deterioration of fat in the food again, guaranteed the dried material quality.Therefore, this vacuum roller drier not only has the high advantage of the normal pressure roller drier thermal efficiency, and rate of drying is fast, dried material product characteristics of fine quality but also have, thereby has solved the highly effective drying problem of thermal sensitivity food material effectively.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the front view of a kind of concrete enforcement structure of roller drier of the present invention;
Fig. 2 is the left view of structure shown in Figure 1.
Fig. 3 is the front view that a kind of vacuum (-tight) housing is specifically implemented structure in the roller drier of the present invention.
Fig. 4 is the vertical view of structure shown in Figure 3.
Fig. 5 is the left view of structure shown in Figure 3.
Fig. 6 is a kind of drying equipment process chart that comprises vacuum roller drier of the present invention.
Among the figure, the 1-bleeder valve, 2-cushions discharge bucket, the 3-frame, the 4-seal valve that gathers materials, 5-aggregate bin, the 6-vacuum (-tight) housing, 7-admission, drainpipe, 8-drying drum, the 9-switch board, 10-doctor blade device, 11-loader, 12-evacuation tube Connection Block, 13-quick operating valve, 14-observation window, the 15-feed chute, 16-reductor, 17-guard shield, the 18-transmission device, 19-motor, the sealing of 20-drum spindle, the 21-main shaft bearing, 22-drum spindle, 23-blade shaft bearing, the sealing of 24-blade shaft, 25-blade shaft, 26-doctor blade device handwheel, 27-cylinder gear wheel, the 28-reduction pinion teeth.
The specific embodiment
Fig. 1, vacuum roller drier shown in Figure 2 comprise two drying drums 8, the drum spindle 22 of this drying drum 8 passes the both sides side plate of vacuum (-tight) housing 6 and is supported on by main shaft bearing 21 on the side plate of vacuum (-tight) housing 6, and drum spindle 22 also seals with vacuum (-tight) housing 6 rotationally by drum spindle sealing 20.This main shaft bearing 21 adopts self-aligning roller bearing, and packing_seal is adopted in drum spindle sealing 20, and material is an expanded PTFE, and two drying drum sizes are Φ 600mm * 600mm, and operating pressure reaches the casting cylinder of 0.8MPa, chrome-faced.
Two drying drums 8 are adjacent and be arranged in parallel, and the slurry tank top of its formation is provided with loader 11, and this loader 11 is one to have the feeder sleeve of some feed spouts, so that material is arranged in two drying drum slurry tanks continuously equably; Respectively be provided with a doctor blade device 10 on urceolus face above the drying drum 8, this doctor blade device 10 includes blade shaft 25, is fixedly installed in wing and doctor blade device handwheel 26 on the blade shaft 25; Blade shaft 25 passes the both sides side plate of vacuum (-tight) housing 6 equally and is supported on by blade shaft bearing 23 on the side plate of vacuum (-tight) housing 6, scraper on the blade shaft 25 adopts the 65Mn steel plate to make through Carburization Treatment, by regulating doctor blade device handwheel 26 wing is close on the drying drum 8, so that continuously scrape the material film of being dried from drying drum 8 urceolus faces.Admission, drainpipe 7 pass the core of drum spindle 22 respectively steam are imported in the tube chamber of drying drum 8, and pass through a suction pipe with outside the condensed water expelling tube; Be provided with feed chute 15 at the relative lower position of adjacent two drying drums, 8 formed slurry tanks, this feed chute 15 is not dropped in the dried material in order to avoid will dry material along the axial setting of drying drum 8.
Above-mentioned drying drum 8, drying devices such as doctor blade device 10 and loader 11 all are arranged in the vacuum (-tight) housing 6, and vacuum (-tight) housing 6 is installed on the frame 3, and switch board 9 also is installed on the frame 3.Be provided with at the tip position of vacuum (-tight) housing 6 and can install and the vavuum pump evacuation tube Connection Block 12 of pipeline that interlinks, so that when work, make formation appropriate vacuum degree vacuum (-tight) housing 6 in.The both sides, top of vacuum (-tight) housing 6 also are provided with quick operating valve 13 symmetrically, quick operating valve 13 by bolt, tighten handwheel and sealing gasket is pressed on the vacuum (-tight) housing 6 hermetically, also being provided with on quick operating valve 13 can be for the observation window 14 of observing working condition in the vacuum (-tight) housing; Be arranged on quick operating valve 13 and observation window 14 easy accesses and observation on the vacuum (-tight) housing 6.
End opening at vacuum (-tight) housing 6 is connected with aggregate bin 5 hermetically, and these aggregate bin 5 employing sides connect round structure; End opening at aggregate bin 5 is equipped with the able to turn on or off seal valve 4 that gathers materials hermetically by sealing gasket, and this seal valve 4 that gathers materials is a ball valve, realizes opening and closing apace, to enhance productivity.Outlet at the seal valve 4 that gathers materials also is connected with buffering discharge bucket 2 hermetically, this buffering discharge bucket 2 is a drum barrel shape structure, effect with middle material stock and pressure buffer thereof, the discharging opening of buffering discharge bucket 2 is equipped with an able to turn on or off bleeder valve 1, and this bleeder valve 1 is a butterfly valve.
Side end at two drum spindles 22 all is equipped with cylinder gear wheel 27, the transmission that is meshing with each other of these two cylinder gear wheels 27, and wherein a cylinder gear wheel 27 also is meshed with reduction pinion teeth 28, and reduction pinion teeth 28 is loaded on the axle head of reductor 16 output shafts.The motor 19 that is installed on the frame 3 is in transmission connection mutually by transmission device 18 and reductor 16, and transmission device 18 adopts the band transmission, and the band transmission is provided with guard shield 17, and motor 19 adopts buncher.
As the vacuum (-tight) housing 6 of Fig. 3, Fig. 4, a kind of vacuum roller drier shown in Figure 5, this vacuum (-tight) housing 6 comprises the side plate of cover body and cover body both sides.Cover body is waist shape structure, can adorn two drying drums 8 in it; Center of top at cover body is provided with the adpting flange that evacuation tube 12 is installed, and is provided with to the adpting flange bilateral symmetry observation window mount pad; Also be provided with the mount pad of two quick operating valves 13 at the top of cover body; This mount pad is the adpting flange structure equally, so that aggregate bin is installed hermetically.The bilateral symmetry of cover body be sealedly connected with side plate.
As shown in Figure 6, the evacuation tube 12 on the vacuum roller drier vacuum (-tight) housing 6 is communicated with separation and collection device, condenser, condensed water receiver and vavuum pump successively, and vavuum pump is connected with steam-water separator again.
During dry work, at first open steam valve, drying drum 8 is remained on preheating under the normal pressure, heat carrier adopts low-pressure steam; After reaching preheating time, close vacuum (-tight) housing 6 all valves and make it to form an airtight container; Start vavuum pump, after being evacuated to certain vacuum (reaching 700mmHg) in the vacuum (-tight) housing 6, opening the slurry feed valve and make loader 11 feed in the slurry tank of drying drum 8, adjust the feed amount, till feed amount and oven dry amount maintenance balance as vacuum; After drying was produced certain hour, every certain interval of time was alternately opened gather materials seal valve 4 and bleeder valve 1 discharging, and two alternately need to keep the vacuum in the vacuum (-tight) housing 6 in the opening procedure.Need close inlet valve earlier during shutdown, make loader 11 stop feed, finish until slurry drying and close vavuum pump again.
In the above-mentioned course of work, the oven dry of material on drying drum urceolus face conducted heat from inside to outside, material film surface evaporation intensity height, thereby have the higher thermal efficiency; Also because the interior working vacuum degree of vacuum (-tight) housing is low, the boiling point of water descends, evaporation rate is accelerated, the destruction and the gelatinization of material nutrition under the condition of high temperature have been avoided, satisfied the drying requirement of thermal sensitivity food material fully, in vacuum (-tight) housing 6, air content and oxygen content are all relatively low simultaneously, alleviate even avoided the oxidation chance of fat in the food, the dried foods materials quality improved greatly.
As the another kind of embodiment of vacuum roller drier of the present invention, the drying drum 8 in its vacuum (-tight) housing 6 is one, and correspondingly its doctor blade device 10 also is one.But above-mentioned these structures only are to have enumerated preferred implementations more of the present invention, yet the present invention is not limited thereto; As gather materials seal valve 4 except that adopting ball valve, and to go back but slide valve etc., same bleeder valve 1 also is not limited to butterfly valve, and they both can be manual, also can be pneumatic or electronic; Gather materials seal valve 4, bleeder valve 1 can also be pneumatic sealing gland formula gate valve or the like; Vacuum (-tight) housing 6 also is not limited to said structure, can also adopt other closed structure form; On the urceolus face of every drying drum 8 some auxiliary pressure rollers can also be set, so that expect film uniformity more; Loader 11 also is not limited to the tubulose loader fixed, can also be can be along the inlet of drying drum axially reciprocating; Certainly the feed mode can also adopt pulp-hanging type, spray to wash multiple corresponding manners such as formula, immersion; The heat medium of thermal source both steam also add deep fat; Drive the dry transmission device that rotates of drying drum work and also do not limit the band transmission, go back other kind of drive of using always or the like.Therefore in all improvement and the conversion under basic principle situation of the present invention, done, all fall within the scope of protection of the present invention.
Claims (10)
1, a kind of vacuum roller drier, it comprises drying drum (8), doctor blade device (10) and loader (11), it is characterized in that: described drying drum (8), doctor blade device (10) and loader (11) all are arranged in the enclosed vacuum cover (6); End opening at this vacuum (-tight) housing (6) is connected with aggregate bin (5) hermetically, and this aggregate bin (5) lower end is connected with buffering discharge bucket (2) by the able to turn on or off seal valve that gathers materials (4); Also be provided with evacuation tube Connection Block (12) on the described vacuum (-tight) housing (6).
2, vacuum roller drier according to claim 1 is characterized in that: the discharging opening of described buffering discharge bucket (2) is equipped with able to turn on or off bleeder valve (1).
3, vacuum roller drier according to claim 1 is characterized in that: the evacuation tube Connection Block (12) on the described vacuum (-tight) housing (6) is connected with vavuum pump by evacuation tube.
4, vacuum roller drier according to claim 1 is characterized in that: the below of described drying drum (8) is provided with feed chute (15), and this feed chute (15) is positioned at vacuum (-tight) housing (6).
5, according to each described vacuum roller drier among the claim 1-4, it is characterized in that: be provided with two drying drums (8) and adjacent arrangement in the described vacuum (-tight) housing (6); Described loader (11) is positioned at the top of two drying drums (8), all posts doctor blade device (10) on the urceolus face of every drying drum (8).
6, according to each described vacuum roller drier among the claim 1-4, it is characterized in that: be provided with a drying drum (8) in the described vacuum (-tight) housing (6); Described loader (11) is positioned at the top of drying drum (8), posts doctor blade device (10) on the urceolus face of this drying drum (8).
7, according to each described vacuum roller drier among the claim 1-4, it is characterized in that: the drum spindle (22) of described drying drum (8) passes the side plate of vacuum (-tight) housing (6), is supported on hermetically on this vacuum (-tight) housing (6).
8, according to each described vacuum roller drier among the claim 1-4, it is characterized in that: can be provided with a quick operating valve (13) on the described vacuum (-tight) housing (6) at least, also be provided with observation window (14) on this quick operating valve (13).
9, vacuum roller drier according to claim 2 is characterized in that: described bleeder valve (1) is a butterfly valve.
10, vacuum roller drier according to claim 1 and 2 is characterized in that: the described seal valve that gathers materials (4) is a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038660 CN1815117A (en) | 2006-03-07 | 2006-03-07 | Vacuum drum drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038660 CN1815117A (en) | 2006-03-07 | 2006-03-07 | Vacuum drum drying machine |
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| Publication Number | Publication Date |
|---|---|
| CN1815117A true CN1815117A (en) | 2006-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610038660 Pending CN1815117A (en) | 2006-03-07 | 2006-03-07 | Vacuum drum drying machine |
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| Country | Link |
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| CN (1) | CN1815117A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968653A (en) * | 2013-01-24 | 2014-08-06 | 湖南工业大学 | Slurry drying roller device |
| CN104642713A (en) * | 2015-01-26 | 2015-05-27 | 江苏大学 | Continuous dry drum zein drying device and method |
| CN109772551A (en) * | 2018-12-17 | 2019-05-21 | 中国农业科学院农产品加工研究所 | Potato full-powder preparation system and its application method |
| CN111569449A (en) * | 2020-05-19 | 2020-08-25 | 昆明白鸥微藻技术有限公司 | Haematococcus pluvialis broken wall algae sheet roller drying equipment |
-
2006
- 2006-03-07 CN CN 200610038660 patent/CN1815117A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968653A (en) * | 2013-01-24 | 2014-08-06 | 湖南工业大学 | Slurry drying roller device |
| CN103968653B (en) * | 2013-01-24 | 2017-10-27 | 湖南工业大学 | A kind of slurry drying drum device |
| CN104642713A (en) * | 2015-01-26 | 2015-05-27 | 江苏大学 | Continuous dry drum zein drying device and method |
| CN104642713B (en) * | 2015-01-26 | 2018-02-27 | 江苏大学 | Zein continuous vacuum drum drying equipment and method |
| CN109772551A (en) * | 2018-12-17 | 2019-05-21 | 中国农业科学院农产品加工研究所 | Potato full-powder preparation system and its application method |
| CN111569449A (en) * | 2020-05-19 | 2020-08-25 | 昆明白鸥微藻技术有限公司 | Haematococcus pluvialis broken wall algae sheet roller drying equipment |
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