WO2023097876A1 - 一种ddgs饲料干燥设备及ddgs饲料干燥工艺 - Google Patents

一种ddgs饲料干燥设备及ddgs饲料干燥工艺 Download PDF

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WO2023097876A1
WO2023097876A1 PCT/CN2022/071913 CN2022071913W WO2023097876A1 WO 2023097876 A1 WO2023097876 A1 WO 2023097876A1 CN 2022071913 W CN2022071913 W CN 2022071913W WO 2023097876 A1 WO2023097876 A1 WO 2023097876A1
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drum
feeding track
ddgs feed
feeding
ddgs
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PCT/CN2022/071913
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English (en)
French (fr)
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何德方
蒋伟
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江苏贝尔机械有限公司
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Publication of WO2023097876A1 publication Critical patent/WO2023097876A1/zh

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/04—Heating arrangements using electric heating
    • 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
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87—Re-use of by-products of food processing for fodder production

Definitions

  • the invention relates to the technical field of feed production, in particular to a DDGS feed drying equipment and a DDGS feed drying process.
  • DDGS distillers dried grains and its solubles.
  • DDGS is the trade name of distiller's grain protein feed, that is, dried distiller's grains containing soluble solids.
  • the starch in it is converted into ethanol and carbon dioxide, and other nutrients (such as protein, fat and fiber, etc.) are left in the distiller's grains.
  • the content of protein, B vitamins and amino acids in distiller's grains is higher than that of corn, and contains unknown growth-promoting factors produced during fermentation.
  • the existing drying process is a large-scale drum drying method.
  • the drum is heated to dry the feed inside; this kind of equipment is easy to cause sticking phenomenon (feed sticks to the drum inner wall) due to the high temperature of the inner wall of the drum. , and even burn the feed, which reduces the nutritional value of the feed; and the inner wall of the drum is extremely difficult to clean, which affects the next processing and use.
  • the main purpose of the present invention is to provide a DDGS feed drying equipment and a DDGS feed drying process to solve the above problems.
  • the present invention provides a kind of DDGS feed drying equipment, including vibrating feeder, drum heater and cooling impurity remover;
  • the vibrating feeder includes a base and a feeding track, the base and the feeding track are connected by a plurality of linear vibrators, and electric heating wires are arranged on the outside of the feeding track; a cover is arranged on the top of the feeding track plate; the discharge end of the feeding track is inserted into the feed end of the drum heater; the side of the cover plate away from the discharge end of the feeding track is provided with a feeding funnel;
  • the drum heater includes a support frame, a sleeve and a drum; the sleeve is fixed on the support frame, the drum is sleeved in the sleeve, and connected to the sleeve through a bearing; the outer wall of the sleeve is set There is a power device for driving the drum to rotate; the inner wall of the sleeve is provided with a heating tube for heating the drum; the inside of the drum is provided with spiral fins;
  • the cooling impurity remover includes a conveyor belt, a centrifugal impurity removal device is provided at one end of the conveyor belt, and the centrifugal impurity removal device is located below the discharge end of the drum heater.
  • the centrifugal impurity removal device includes a discharge cylinder; the lower end of the discharge cylinder is connected to the conveyor belt; the first motor is connected to the discharge cylinder through a bracket, and the output end of the first motor is connected to Centrifugal turntable; the centrifugal turntable is located inside the feeding cylinder and leaves a blanking space between it and the discharging cylinder.
  • the discharge end of the feeding track is inclined downward.
  • a plurality of pin-shaped protrusions are arranged on the feeding track.
  • a waste gas collection and treatment device is connected to the cover plate.
  • the power device includes a second motor, the output end of the second motor is provided with a gear; the outer wall of the drum is provided with a ring gear, and the ring gear meshes with the gear.
  • the present invention also provides a DDGS feed drying process, comprising the following steps:
  • the vibrating feeder makes the feeding track vibrate, and the DDGS feed jumps in the feeding track to prevent the DDGS feed from sticking to the heated feeding track;
  • DDGS feed enters the drum heater from the discharge end of the feeding track for secondary drying. Since the drum keeps rotating, the DDGS feed rolls in the drum and is heated more evenly;
  • step S1 continuous feeding may be adopted.
  • the invention disperses and pre-dries the DDGS feed through the vibrating feeder, reduces the moisture in the DDGS feed entering the drum heater, and effectively prevents the phenomenon of sticking to the inner wall of the drum; uniformly heats and dries the drum heater, and further removes the remaining The water is dry, and the DDGS feed that is not completely dried can be effectively intercepted by cooling the impurity remover to prevent it from entering the next process.
  • Fig. 1 is a perspective view of a DDGS feed drying equipment of the present invention.
  • Fig. 2 is a sectional view of a DDGS feed drying equipment of the present invention.
  • 1-vibrating feeder 2-drum heater; 3-cooling impurity remover; 11-base; 12-linear vibrator; 13-feeding track; 14-feeding funnel; 15-pin convex 16-cover plate; 21-support frame; 22-sleeve; 23-roller; 24-bearing; 31-conveyor belt; 32-centrifugal impurity removal device; 221-second motor; 222-gear; 223-heating Tube; 231-ring gear; 232-spiral fin; 321-centrifugal turntable; 322-first motor; 323-support; 324-feeding cylinder.
  • the present invention provides a DDGS feed drying equipment, including a vibrating feeder 1, a drum heater 2 and a cooling impurity remover 3;
  • Described vibrating feeder 1 comprises base 11 and feeding rail 13, is connected by a plurality of linear vibrators 12 between described base 11 and feeding rail 13, and described feeding rail 13 exterior is provided with heating wire (not shown Out); the top of the feeding track 13 is provided with a cover plate 16; the discharge end of the feeding track 13 is inserted into the feed end of the drum heater 2; the cover plate 16 is far away from the discharge end of the feeding track 13
  • the side is provided with a feeding funnel 14;
  • the drum heater 2 includes a support frame 21, a sleeve 22 and a drum 23; the sleeve 22 is fixed on the support frame 21, the drum 23 is sleeved in the sleeve 22, and is connected to the sleeve by a bearing 24 22 connection; the outer wall of the sleeve 22 is provided with a power device for driving the rotation of the drum 23; the inner wall of the sleeve 22 is provided with a heating tube 223 for heating the drum 23; the inner wall of the drum 23 is provided with a spiral fin slice 232;
  • the cooling impurity remover 3 includes a conveyor belt 31 , one end of the conveyor belt 31 is provided with a centrifugal impurity removal device 32 , and the centrifugal impurity removal device 32 is located below the discharge end of the drum heater 2 .
  • the centrifugal impurity removal device 32 includes a discharge cylinder 324; the lower end of the discharge cylinder 324 is connected to the conveyor belt 31; A motor 322 , the output end of the first motor 322 is connected to a centrifugal turntable 321 ; the centrifugal turntable 321 is located inside the feeding cylinder 324 and there is a blanking space between the feeding cylinder 324 and the feeding cylinder 324 .
  • the centrifugal impurity removal device 32 can effectively intercept the incompletely dried DDGS feed to prevent it from entering the next process. At the same time, the incompletely dried DDGS feed can continue to dry under the rotating friction of the centrifugal turntable 321 until it is completely dried and then discharged.
  • the discharge end of the feeding track 13 is arranged inclined downward. It is convenient for the feed to move toward the discharge end of the feeding track 13.
  • a plurality of needle protrusions 15 are arranged on the feeding track 13 .
  • the feed shaken up by the feeding track 13 will be broken up and decomposed when it hits the pin-type protrusion 15 when falling, so as to improve the drying efficiency.
  • the cover plate 16 is connected with a waste gas collection and treatment device (not shown), which can process the generated water vapor in time.
  • the power device includes a second motor 221, the output end of the second motor 221 is provided with a gear 222; the outer wall of the drum 23 is provided with a ring gear 231, and the ring gear 231 is connected to the engage.
  • the present invention also provides a DDGS feed drying process, comprising the following steps:
  • the vibrating feeder 1 makes the feeding track 13 vibrate, and the DDGS feed jumps in the feeding track 13, so as to prevent the DDGS feed from sticking to the heated feeding track 13;
  • the DDGS feed enters the drum heater 2 from the discharge end of the feeding track 13 for secondary drying. Since the drum 23 has been rotating, the DDGS feed rolls in the drum 23 and is heated more evenly;
  • step S1 continuous feeding can be adopted to streamline operations and improve production efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

一种DDGS饲料干燥设备，包括震动上料器(1)、滚筒式加热器(2)和冷却除杂器(3)；震动上料器(1)包括底座(11)和上料轨道(13)，底座(11)和上料轨道(13)之间通过多个直线振动器(12)连接，上料轨道(13)外部布设有电热丝；上料轨道(13)顶部设置有盖板(16)；上料轨道(13)出料端插入滚筒式加热器(2)进料端；滚筒式加热器(2)包括支撑架(21)、套筒(22)和滚筒(23)；套筒(22)内壁上设置有用于为滚筒加热的加热管(223)；滚筒(23)内部上设置有螺旋翅片(232)；冷却除杂器(3)包括输送带(31)，输送带(31)一端设置有离心除杂装置(32)，离心除杂装置(32)位于滚筒式加热器(2)出料端下方。一种采用该干燥设备的DDGS饲料干燥工艺。

Description

一种DDGS饲料干燥设备及DDGS饲料干燥工艺 技术领域
本发明涉及饲料生产技术领域，特别是涉及一种DDGS饲料干燥设备及DDGS饲料干燥工艺。
背景技术
DDGS是干酒糟及其可溶物。DDGS是酒糟蛋白饲料的商品名，即含有可溶固形物的干酒糟。在以玉米为原料发酵制取乙醇的过程中，其中的淀粉被转化成乙醇和二氧化碳，其他营养成分(如蛋白质、脂肪和纤维等)均留在酒糟中。同时，由于微生物的作用，酒糟中蛋白质、B族维生素及氨基酸含量均比玉米高，并含有发酵中生成的未知促生长因子。
为了解决国内在DDGS干燥制取上的不足，一方面，需要我国实施标准的生产工艺和提供足够耐高湿生产环境的储存设施；另一方面，需要企业积极开展DDGS的研发。
现有采用的干燥工艺为大型滚筒式干燥方法，通过对滚筒加热，以对内部的饲料进行烘干；此种设备由于滚筒内壁温度较高，极易造成粘锅现象(饲料粘在滚筒内壁)，甚至将饲料烤糊，降低了饲料的营养价值；且滚筒内壁极难清理，影响下次加工使用。
发明内容
本发明主要目的在于提供一种DDGS饲料干燥设备及DDGS饲料干燥工艺，以解决上述问题。
为达上述目的，本发明提供一种DDGS饲料干燥设备，包括震动上料器、滚筒式加热器和冷却除杂器；
所述震动上料器包括底座和上料轨道，所述底座和上料轨道之间通过多个直线振动器连接，所述上料轨道外部布设有电热丝；所述上料轨道顶部设 置有盖板；所述上料轨道出料端插入滚筒式加热器进料端；所述盖板上远离上料轨道出料端的一侧设置有上料漏斗；
所述滚筒式加热器包括支撑架、套筒和滚筒；所述套筒固定于支撑架上，所述滚筒套设于套筒内，并通过轴承与套筒连接；所述套筒外壁上设置有用于驱动滚筒旋转的动力装置；所述套筒内壁上设置有用于为滚筒加热的加热管；所述滚筒内部上设置有螺旋翅片；
所述冷却除杂器包括输送带，所述输送带一端设置有离心除杂装置，所述离心除杂装置位于滚筒式加热器出料端下方。
进一步的，所述离心除杂装置包括下料筒体；所述下料筒体下端与输送带连接；所述下料筒体内通过支架连接有第一电机，所述第一电机输出端连接有离心转盘；所述离心转盘位于下料筒体内部且与下料筒体之间留有下料空间。
进一步的，所述上料轨道出料端向下倾斜设置。
进一步的，所述上料轨道上设置有多个针式凸起。
进一步的，所述盖板上连接有废气收集处理装置。
进一步的，所述动力装置包括第二电机，所述第二电机输出端设置有齿轮；所述滚筒外壁上设置有齿圈，所述齿圈与齿轮啮合。
本发明还提供一种DDGS饲料干燥工艺，包括以下步骤：
S1、启动DDGS饲料干燥设备，将混合好的DDGS饲料从上料漏斗倒入；
S2、打散预干燥；震动上料器使上料轨道震动，DDGS饲料在上料轨道内跳动，以防止DDGS饲料与加热后的上料轨道粘连；
S3、二次干燥；DDGS饲料从上料轨道出料端进入滚筒式加热器进行二次干燥，由于滚筒一直旋转，使DDGS饲料在滚筒内翻滚，受热更均匀；
S4、除杂，DDGS饲料从滚筒式加热器出料端进入离心除杂装置中，在离心转盘作用下，轻的物料沿下料筒体落到输送带上，含有残余水分的重物料留在离心转盘内；
S5、冷却，在输送带的运动状态下风冷，进入下一工艺。
进一步的，在步骤S1中可采用连续上料形式。
本发明具有以下有益效果：
本发明通过震动上料器对DDGS饲料进行打散和预干燥，降低进入滚筒式加热器的DDGS饲料中的水分，有效防止滚筒内壁粘锅现象；通过滚筒式加热器均匀加热干燥，进一步将残余水分干燥，通过冷却除杂器可以有效对未完全干燥的DDGS饲料进行拦截，防止进入下一工序。
附图说明
图1为本发明一种DDGS饲料干燥设备立体图。
图2为本发明一种DDGS饲料干燥设备剖视图。
其中，1-震动上料器；2-滚筒式加热器；3-冷却除杂器；11-底座；12-直线振动器；13-上料轨道；14-上料漏斗；15-针式凸起；16-盖板；21-支撑架；22-套筒；23-滚筒；24-轴承；31-输送带；32-离心除杂装置；221-第二电机；222-齿轮；223-加热管；231-齿圈；232-螺旋翅片；321-离心转盘；322-第一电机；323-支架；324-下料筒体。
具体实施方式
为达成上述目的及功效，本发明所采用的技术手段及构造，结合附图就本发明较佳实施例详加说明其特征与功能。
如图1-2所示，本发明中提供了一种DDGS饲料干燥设备，包括震动上料器1、滚筒式加热器2和冷却除杂器3；
所述震动上料器1包括底座11和上料轨道13，所述底座11和上料轨道13之间通过多个直线振动器12连接，所述上料轨道13外部布设有电热丝(未画出)；所述上料轨道13顶部设置有盖板16；所述上料轨道13出料端插入滚筒式加热器2进料端；所述盖板16上远离上料轨道13出料端的一侧设置有上料漏斗14；
所述滚筒式加热器2包括支撑架21、套筒22和滚筒23；所述套筒22固定于支撑架21上，所述滚筒23套设于套筒22内，并通过轴承24与套筒22连接；所述套筒22外壁上设置有用于驱动滚筒23旋转的动力装置；所述套筒22内壁上设置有用于为滚筒23加热的加热管223；所述滚筒23内部上设置有螺旋翅片232；
所述冷却除杂器3包括输送带31，所述输送带31一端设置有离心除杂装置32，所述离心除杂装置32位于滚筒式加热器2出料端下方。
在另一实施例中，所述离心除杂装置32包括下料筒体324；所述下料筒体324下端与输送带31连接；所述下料筒体324内通过支架323连接有第一电机322，所述第一电机322输出端连接有离心转盘321；所述离心转盘321位于下料筒体324内部且与下料筒体324之间留有下料空间。通过离心除杂装置32可以有效对未完全干燥的DDGS饲料进行拦截，防止进入下一工序，同时，未完全干燥的DDGS饲料在离心转盘321的转动摩擦下可以继续干燥，直至完全干燥后排出。
在另一实施例中，所述上料轨道13出料端向下倾斜设置。方便饲料向上料轨道13出料端运动。
在另一实施例中，所述上料轨道13上设置有多个针式凸起15。被上料轨道13震起的饲料在落下时碰到针式凸起15会被打散分解，提高干燥效率。
在另一实施例中，所述盖板16上连接有废气收集处理装置(未画出)， 可以及时对产生的水汽进行处理。
在另一实施例中，所述动力装置包括第二电机221，所述第二电机221输出端设置有齿轮222；所述滚筒23外壁上设置有齿圈231，所述齿圈231与齿轮222啮合。
本发明还提供一种DDGS饲料干燥工艺，包括以下步骤：
S1、启动DDGS饲料干燥设备，将混合好的DDGS饲料从上料漏斗14倒入；
S2、打散预干燥；震动上料器1使上料轨道13震动，DDGS饲料在上料轨道13内跳动，以防止DDGS饲料与加热后的上料轨道13粘连；
S3、二次干燥；DDGS饲料从上料轨道13出料端进入滚筒式加热器2进行二次干燥，由于滚筒23一直旋转，使DDGS饲料在滚筒23内翻滚，受热更均匀；
S4、除杂，DDGS饲料从滚筒式加热器2出料端进入离心除杂装置32中，在离心转盘321作用下，轻的物料沿下料筒体324落到输送带31上，含有残余水分的重物料留在离心转盘321内；
S5、冷却，在输送带的运动状态下风冷，进入下一工艺。
在步骤S1中可采用连续上料形式，是作业流水化，提高生产效率。
以上所述仅为本发明较佳实施例而已，非全部实施例，任何人应该得知在本发明的启示下做出的结构变化，凡是与本发明具有相同或者相近似的技术方案，均属于本发明的保护范围。

Claims (8)

  1. 一种DDGS饲料干燥设备，其特征在于，包括震动上料器、滚筒式加热器和冷却除杂器；
    所述震动上料器包括底座和上料轨道，所述底座和上料轨道之间通过多个直线振动器连接，所述上料轨道外部布设有电热丝；所述上料轨道顶部设置有盖板；所述上料轨道出料端插入滚筒式加热器进料端；所述盖板上远离上料轨道出料端的一侧设置有上料漏斗；
    所述滚筒式加热器包括支撑架、套筒和滚筒；所述套筒固定于支撑架上，所述滚筒套设于套筒内，并通过轴承与套筒连接；所述套筒外壁上设置有用于驱动滚筒旋转的动力装置；所述套筒内壁上设置有用于为滚筒加热的加热管；所述滚筒内部上设置有螺旋翅片；
    所述冷却除杂器包括输送带，所述输送带一端设置有离心除杂装置，所述离心除杂装置位于滚筒式加热器出料端下方。
  2. 如权利要求1所述的一种DDGS饲料干燥设备，其特征在于，所述离心除杂装置包括下料筒体；所述下料筒体下端与输送带连接；所述下料筒体内通过支架连接有第一电机，所述第一电机输出端连接有离心转盘；所述离心转盘位于下料筒体内部且与下料筒体之间留有下料空间。
  3. 如权利要求1或2所述的一种DDGS饲料干燥设备，其特征在于，所述上料轨道出料端向下倾斜设置。
  4. 如权利要求3所述的一种DDGS饲料干燥设备，其特征在于，所述上料轨道上设置有多个针式凸起。
  5. 如权利要求1或4所述的一种DDGS饲料干燥设备，其特征在于，所述盖板上连接有废气收集处理装置。
  6. 如权利要求1所述的一种DDGS饲料干燥设备，其特征在于，所述动力 装置包括第二电机，所述第二电机输出端设置有齿轮；所述滚筒外壁上设置有齿圈，所述齿圈与齿轮啮合。
  7. 一种DDGS饲料干燥工艺，其特征在于，包括以下步骤：
    S1、启动DDGS饲料干燥设备，将混合好的DDGS饲料从上料漏斗倒入；
    S2、打散预干燥；震动上料器使上料轨道震动，DDGS饲料在上料轨道内跳动，以防止DDGS饲料与加热后的上料轨道粘连；
    S3、二次干燥；DDGS饲料从上料轨道出料端进入滚筒式加热器进行二次干燥，由于滚筒一直旋转，使DDGS饲料在滚筒内翻滚，受热更均匀；
    S4、除杂，DDGS饲料从滚筒式加热器出料端进入离心除杂装置中，在离心转盘作用下，轻的物料沿下料筒体落到输送带上，含有残余水分的重物料留在离心转盘内；
    S5、冷却，在输送带的运动状态下风冷，进入下一工艺。
  8. 如权利要求7所述的一种DDGS饲料干燥工艺，其特征在于，在步骤S1中可采用连续上料形式。
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