CN112066704B - Control method of wheat-making drying equipment - Google Patents
Control method of wheat-making drying equipment Download PDFInfo
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- CN112066704B CN112066704B CN202010848056.8A CN202010848056A CN112066704B CN 112066704 B CN112066704 B CN 112066704B CN 202010848056 A CN202010848056 A CN 202010848056A CN 112066704 B CN112066704 B CN 112066704B
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- drying furnace
- drying
- cold air
- steam
- air door
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a control method of malting drying equipment, which comprises a first drying furnace, a second drying furnace and a third drying furnace, wherein the first drying furnace and the second drying furnace are arranged side by side from top to bottom, steam is introduced into the third drying furnace through a first steam valve, the steam is introduced into the first drying furnace and the second drying furnace through a second steam valve at the same time, the steam discharged from the third drying furnace is introduced into a second steam valve, a first cold air door corresponding to the first drying furnace is arranged on the upper side of the second steam valve, a second cold air door corresponding to the second drying furnace is arranged on the lower side of the second steam valve, the first cold air door and the second cold air door are controlled by an electric valve, and the electric valve and a temperature sensor in the drying furnace are connected with a main control unit. The invention improves the drying equipment and the control method, and improves the stability and the uniformity of the quality control of the malt.
Description
Technical Field
The invention relates to the field of malting equipment, in particular to a control method of malting drying equipment.
Background
In the malt manufacturing process, malt needs to be dried, a plurality of drying furnaces are adopted in the existing drying equipment, two drying furnaces which are used at the beginning share a set of heater and temperature control regulation mode, the temperature regulation takes the inlet air temperature control of one drying furnace as a reference value, the advantages are that the investment is low, the air channel structure is simple and compact, but the temperature control of the two drying furnaces is not synchronous, the drying periods of the two drying furnaces are different, and the inlet air temperature deviation of one drying furnace further increases the control difficulty of the drying rhythm, so that the synchronous withering and simultaneous discharging are realized as far as possible by regulating the speed of a drying fan, but the production delay is caused by the process difference; the difference in the drying process between the two drying ovens also has a negative effect on the stability and homogeneity of the malt quality. A new drying apparatus and control method are needed to solve the above problems.
Disclosure of Invention
The invention improves the drying equipment and the control method, and improves the stability and the uniformity of the quality control of the malt.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a malting drying equipment, includes first drying oven, second drying oven and third drying oven, wherein first drying oven and second drying oven are the setting side by side from top to bottom, the third drying oven let in steam by first steam valve, first drying oven and second drying oven let in steam by the second steam valve simultaneously, the steam of discharging of third drying oven let in the second steam valve, the upside of second steam valve be provided with the first cold wind door corresponding with first drying oven, the downside of second steam valve be provided with the second cold wind door corresponding with the second drying oven, first cold wind door and second cold wind door control by electric valve, electric valve and the temperature sensor in the drying oven all link to each other with the master control unit.
Preferably, the first drying furnace, the second drying furnace and the third drying furnace are all provided with a blower at one end.
Preferably, the first drying furnace, the second drying furnace and the third drying furnace are internally and transversely provided with a rotatable spiral stirring shaft.
The invention also relates to a control method of the wheat-making drying equipment, which comprises the following specific steps:
the third drying furnace starts to heat, then the first drying furnace and the second drying furnace start to feed materials, and hot steam passing through the third drying furnace enters the first drying furnace and the second drying furnace through the second steam valve simultaneously;
the temperature in the second drying furnace is controlled by opening and closing the second steam valve, when the inlet air temperature of the first drying furnace is higher, the second cold air door is closed, the first cold air door is opened, the opening degree of the electric valve is controlled by the main control unit to execute the valve opening, and the inlet air temperature of the first drying furnace is accurately reduced;
when the inlet air temperature of the first drying oven is lower than the low temperature, the first cold air door is closed, the second cold air door is opened, the electric valve is controlled by the main control unit to execute the opening degree of the valve so as to reduce the inlet air temperature of the second drying oven, and then the opening degree of the steam valve is automatically adjusted by the second steam valve according to a temperature control program until the temperatures of the first drying oven and the second drying oven meet the control requirements.
Compared with the prior art, the invention has the beneficial effects that:
the corresponding cold air door is added in the drying furnace and is automatically controlled, a new control method is adopted, the two drying layers are controlled by one set of heater, the air inlet temperature of the two drying layers can be accurately controlled respectively, the production process requirements are met, and the stability and the uniformity of malt quality control are improved finally; the production punctuality and the operation standard of each unit in the drying procedure can be effectively improved, conditions are created for lean production of a production line, the operation of the production line can be optimized, the production rhythm is accelerated, the yield is reasonably improved, and the production cost is reduced.
Drawings
Fig. 1 is a system configuration diagram of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in figure 1, the invention relates to a wheat-making drying device, which comprises a first drying furnace K1, a second drying furnace K2 and a third drying furnace K3, wherein the first drying furnace K1 and the second drying furnace K2 are arranged side by side from top to bottom, the third drying furnace K3 is introduced with steam through a first steam valve 4, the first drying furnace K1 and the second drying furnace K2 are simultaneously aerated with steam through a second steam valve 2, the discharged steam of the third drying oven K3 is introduced into a second steam valve 2, a first cold air door 1 corresponding to the first drying oven K1 is arranged at the upper side of the second steam valve 2, a second cold air door 3 corresponding to the second drying oven K2 is arranged at the lower side of the second steam valve 2, the first cold air door 1 and the second cold air door 3 are controlled by an electric valve, and the electric valve and a temperature sensor in the drying furnace are connected with a main control unit.
Wherein, the blower 5 is arranged at one end of each of the first drying furnace K1, the second drying furnace K2 and the third drying furnace K3, and cold air and hot steam can be introduced into the first drying furnace K1, the second drying furnace K2 and the third drying furnace K3.
The first drying furnace K1, the second drying furnace K2 and the third drying furnace K3 are all transversely provided with a rotatable spiral stirring shaft 6, so that the malt in the drying furnaces can be uniformly dried.
Also relates to a control method of the malting and drying equipment, which comprises the following steps:
the third drying furnace K3 starts to be heated, then the first drying furnace K1 and the second drying furnace K2 start to be fed with the materials, and hot steam passing through the third drying furnace K3 simultaneously enters the first drying furnace K1 and the second drying furnace K2 through the second steam valve 2;
the temperature in the second drying furnace K2 is controlled by the opening and closing of the second steam valve 2, when the temperature of the inlet air of the first drying furnace K1 is higher, the second cold air door 3 is closed, the first cold air door 1 is opened, the opening degree of the electric valve is controlled by the main control unit to execute the valve opening degree, and the inlet air temperature of the first drying furnace K1 is accurately reduced;
when the air inlet temperature of the first drying oven K1 is low, the first cold air door 1 is closed, the second cold air door 3 is opened, the electric valve is controlled by the main control unit to execute the valve opening degree so as to reduce the air inlet temperature of the second drying oven K2, and then the second steam valve 2 automatically adjusts the steam valve opening degree according to the temperature control program until the temperatures of the first drying oven K1 and the second drying oven K2 both meet the control requirements.
The first embodiment is as follows:
the drying process of the drying equipment comprises the following steps: barley after germination of each batch of fed barley is conveyed to a drying furnace through a combination machine and a stainless steel pipeline, half of the barley is fed into a second drying furnace (K2) firstly, the time is about 1.5 hours, the other half of the barley is fed into a first drying furnace (K1), and drying is started immediately after feeding of each furnace is finished, wherein the typical drying process is as follows: 50 ℃ (2hr) -55 ℃ (4hr) -58 ℃ (4hr) -60 ℃ (4hr) -62 ℃ (4hr), after drying withering of the first drying furnace (K1) and the second drying furnace (K2) makes the moisture of wheat layer lower than 10% and exhaust air temperature reach 50 ℃, finally mixing the materials in the first drying furnace (K1) and the second drying furnace (K2) and feeding into the third drying furnace (K3) for drying again.
Specifically, a Canadian barley variety Metcalf is selected, and a tower type saratin malt production line is adopted; the average material amount is 280t, and the drying process of K1 and K2 are set to 50 deg.C (2hr) -55 deg.C (4hr) -58 deg.C (4hr) -60 deg.C (4hr) -62 deg.C (4 hr).
The method comprises the following steps:
s1: after the third drying furnace K3 normally operates, the first drying furnace K1 and the second drying furnace K2 are sequentially fed, and drying is started immediately after the feeding of each furnace is finished;
s2, starting the second drying furnace K2 to realize automatic temperature control, wherein the temperature reaches a set value of 50 ℃, and after starting the first drying furnace K1, because the first drying furnace K1 is influenced by hot air of the third drying furnace K3, the air inlet temperature of the first drying furnace K1 is set to be 50 ℃, and the actual air inlet temperature is 55 ℃ and is higher than the set temperature;
s3: the main control unit automatically adjusts the opening degree of the first cold air door 1, so that the inlet air temperature of the first drying furnace K1 is controlled to reach a set value of 50 ℃;
s4: the third drying furnace K3 runs step by step, the fan speed is reduced from 95% to 85%, the influence of hot air reduction of the third drying furnace K3 is reduced, the first drying furnace K1 sets the air inlet temperature to be 58 ℃, the actual air inlet temperature is 55 ℃, adjustment is not needed, the second steam valve 2 can automatically control the temperature, the temperature of the second drying furnace K2 reaches the set value of 60 ℃, and if the first cold air door 1 is opened at the moment, the opening degree of the first cold air door 1 is automatically reduced until the air inlet temperature of the first drying furnace K1 reaches the set value of 58 ℃;
if the inlet air temperature is only 57 ℃ after the first cold air door 1 is completely closed and does not reach the set value, the program automatically opens the second cold air door 3, the actual inlet air temperature of the second drying furnace K2 is gradually reduced to 59 ℃ from the set value of 60 ℃, the second steam valve 2 automatically adjusts the valve to increase the steam flow of the heater, and finally the first drying furnace K1 reaches the set value of 58 ℃ and the second drying furnace K2 reaches the set value of 60 ℃;
s5, the third drying furnace K3 is operated step by step, the speed of a fan is increased from 85% to 100%, the fan is influenced by the increase of hot air of the third drying furnace K3, the air inlet temperature of the first drying furnace K1 is set to be 60 ℃, and the actual air inlet temperature is 65 ℃; the air inlet temperature of the second drying furnace K2 is set to be 60 ℃, the actual air inlet temperature is 64 ℃, the second steam valve 2 automatic regulating valve reduces the steam flow of the heater, and finally the temperature of the first drying furnace K1 is 63 ℃ and is higher than the set value;
if the first cold air door 1 is opened and the second cold air door 3 is closed at the moment, the air inlet temperature of the first drying furnace K1 can be controlled to reach a set value of 60 ℃ by automatically increasing the opening degree of the first cold air door 1;
if the second cold air door 3 is opened at the moment, the first cold air door 1 is closed, the opening degree of the second cold air door 3 is gradually reduced, the second steam valve 2 automatically controls steam to be automatically adjusted until the second drying furnace K2 reaches a set value of 60 ℃, and the first drying furnace K1 reaches a set value of 60 ℃;
if the second cold air door 3 is fully closed, the regulating valve of the second steam valve 2 automatically regulates the temperature of the second drying furnace K2 to reach a set value of 60 ℃, and if the inlet air temperature of the first drying furnace K1 is still higher than the set value of 60 ℃, the first cold air door 1 is opened until the temperature of the first drying furnace K1 reaches the set value of 60 ℃;
and S6, after the blowing cooling of the third drying furnace K3 is finished, the second drying furnace K2 realizes automatic temperature control, the temperature reaches a set value of 63 ℃, at the moment, the air inlet temperature of the first drying furnace K1 is slightly lowered to 58 ℃ due to lack of hot air of the third drying furnace K3, the temperature is lower than the set value of 63 ℃, the air inlet temperature of the second drying furnace K2 is lowered to 60 ℃ through automatically adjusting the second cold air door 3, at the moment, the air inlet temperature of the second drying furnace K2 is adjusted to 63 ℃ through the second steam valve 2, and the air inlet temperature of the first drying furnace K1 reaches the set value of 63 ℃.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (3)
1. A method for controlling a malting and drying device is characterized in that the malting and drying device comprises a first drying furnace (K1), a second drying furnace (K2) and a third drying furnace (K3), wherein the first drying furnace (K1) and the second drying furnace (K2) are arranged side by side from top to bottom, steam is introduced into the third drying furnace (K3) through a first steam valve (4), the first drying furnace (K1) and the second drying furnace (K2) are simultaneously introduced into the steam through a second steam valve (2), the discharged steam of the third drying furnace (K3) is introduced into the second steam valve (2), a first cold air door (1) corresponding to the first drying furnace (K1) is arranged on the upper side of the second steam valve (2), a second cold air door (3) corresponding to the second drying furnace (K2) is arranged on the lower side of the second steam valve (2), and the first cold air door (3) and the second cold air door (3) are controlled by a second cold air door (3), the electric valve and the temperature sensor in the drying furnace are connected with the main control unit, wherein the specific control steps are as follows:
the third drying furnace (K3) starts to be heated, then the first drying furnace (K1) and the second drying furnace (K2) start to be fed with the materials, and hot steam passing through the third drying furnace (K3) simultaneously enters the first drying furnace (K1) and the second drying furnace (K2) through a second steam valve (2);
the temperature in the second drying furnace (K2) is controlled by the opening and closing of the second steam valve (2), when the inlet air temperature of the first drying furnace (K1) is higher, the second cold air door (3) is closed, the first cold air door (1) is opened, the opening degree of the electric valve is controlled by the main control unit to execute the valve, and the inlet air temperature of the first drying furnace (K1) is accurately reduced;
when the air inlet temperature of the first drying oven (K1) is low, the first cold air door (1) is closed, the second cold air door (3) is opened, the electric valve is controlled by the main control unit to execute the valve opening degree so as to reduce the air inlet temperature of the second drying oven (K2), and then the second steam valve (2) automatically adjusts the steam valve opening degree according to the temperature control program until the temperatures of the first drying oven (K1) and the second drying oven (K2) all meet the control requirements.
2. The method of controlling a malting drying apparatus according to claim 1, wherein: and one ends of the first drying furnace (K1), the second drying furnace (K2) and the third drying furnace (K3) are respectively provided with a blower (5).
3. The method of controlling a malting drying apparatus according to claim 1, wherein: and rotatable spiral stirring shafts (6) are transversely arranged in the first drying furnace (K1), the second drying furnace (K2) and the third drying furnace (K3).
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| CN202010848056.8A CN112066704B (en) | 2020-08-21 | 2020-08-21 | Control method of wheat-making drying equipment |
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| CN202010848056.8A CN112066704B (en) | 2020-08-21 | 2020-08-21 | Control method of wheat-making drying equipment |
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| CN112066704B true CN112066704B (en) | 2022-03-18 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301486A (en) * | 1994-05-06 | 1995-11-14 | Hayashi Satoko | Temperature controlling method and temperature controller for cold trap in steam condensing device for vacuum freeze dryer |
| CN204438737U (en) * | 2015-01-07 | 2015-07-01 | 福田雷沃国际重工股份有限公司 | A kind of dryer temperature control device |
| CN204987799U (en) * | 2015-09-01 | 2016-01-20 | 山东长江粮油仓储机械有限公司 | Hot -blast automatic temperature adjustment device of grain drying machine |
| CN205124901U (en) * | 2015-11-09 | 2016-04-06 | 河南中川科技有限公司 | Grain drying system |
| CN105558003A (en) * | 2015-12-18 | 2016-05-11 | 安徽中科自动化股份有限公司 | Grain drying machine with cold air replenishing device |
| CN207147192U (en) * | 2017-09-15 | 2018-03-27 | 滁州奥岚格机械有限公司 | One kind automatically controls cold-hot air door |
| CN208765456U (en) * | 2018-08-09 | 2019-04-19 | 辽宁海帝升机械有限公司 | Grain drying machine hot blast temperature self-checking device |
| KR20200005308A (en) * | 2018-07-06 | 2020-01-15 | 박광현 | Organic waste and cereal injury dryer |
| CN210952280U (en) * | 2019-11-07 | 2020-07-07 | 湖北盛琪达工程科技有限公司 | Air adjusting control device on grain drying machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000005308U (en) * | 1998-08-27 | 2000-03-25 | 윤종용 | Wide Area Network Protocol Analyzer |
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2020
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301486A (en) * | 1994-05-06 | 1995-11-14 | Hayashi Satoko | Temperature controlling method and temperature controller for cold trap in steam condensing device for vacuum freeze dryer |
| CN204438737U (en) * | 2015-01-07 | 2015-07-01 | 福田雷沃国际重工股份有限公司 | A kind of dryer temperature control device |
| CN204987799U (en) * | 2015-09-01 | 2016-01-20 | 山东长江粮油仓储机械有限公司 | Hot -blast automatic temperature adjustment device of grain drying machine |
| CN205124901U (en) * | 2015-11-09 | 2016-04-06 | 河南中川科技有限公司 | Grain drying system |
| CN105558003A (en) * | 2015-12-18 | 2016-05-11 | 安徽中科自动化股份有限公司 | Grain drying machine with cold air replenishing device |
| CN207147192U (en) * | 2017-09-15 | 2018-03-27 | 滁州奥岚格机械有限公司 | One kind automatically controls cold-hot air door |
| KR20200005308A (en) * | 2018-07-06 | 2020-01-15 | 박광현 | Organic waste and cereal injury dryer |
| CN208765456U (en) * | 2018-08-09 | 2019-04-19 | 辽宁海帝升机械有限公司 | Grain drying machine hot blast temperature self-checking device |
| CN210952280U (en) * | 2019-11-07 | 2020-07-07 | 湖北盛琪达工程科技有限公司 | Air adjusting control device on grain drying machine |
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