許輝明冷卻器培訓(xùn)

1、Sakchai BoamoonFeedmill KnowledgeBaseCOOLING PROCESS1冷卻過程 COOLING PROCESS 冷卻過程是在一定的時間內(nèi)將產(chǎn)品 的溫度和水分平衡到標(biāo)準(zhǔn)質(zhì)量狀態(tài) 的一種熱交換過程。 The process balanced temperature and humidity of the product to standard quality within limited time定義 / Definition2溫度平衡 TEMPERATURE EQUILIBRIUM熱通過蒸發(fā)過程而變成水蒸汽 HEAT USED FOR EVAPORATION

2、PROCESS TO VAPOR熱通過熱的傳播過程傳遞到冷卻介質(zhì)上 HEAT TRANSFER TO COOLANT (MOIST AIR) THROUGH THERMAL DIFFUSION PROCESS3- 毛細(xì)管作用造成的液體流動 LIQUID MOVEMENT DUE TO CAPILLARITY滲透力造成的液體流動 LIQUID MOVEMENT DUE TO OSMOTIC FORCE- 水份差異造成的液體流動（液體擴散作用） LIQUID MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE (LIQUID DIFFUSION)溫度

3、平衡 TEMPERATURE EQUILIBRIUM4- 重力造成的液體流動 LIQUID MOVEMENT DUE TO GRAVITY- 水份差異造成的蒸汽流動（蒸汽擴散作用） VAPOR MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE (VAPOR DIFFUSION)- 溫度差異造成的蒸汽流動（熱擴散作用） VAPOR MOVEMENT DUE TO TEMPERATURE DIFFERENCE (THERMAL DIFFUSION)溫度平衡 TEMPERATURE EQUILIBRIUM5冷卻過程 Cooling Process1.

4、 蒸發(fā) EVAPORATION2. 熱擴散 THERMAL DIFFUSION3. 機械或化學(xué)力造成的液體流動 Liquid movement by Mechanical & Chemical Force4. 機械或化學(xué)力造成的蒸汽流動 Vapor movement by Mechanical & Chemical Force6顆粒料冷卻 PELLET COOLING它是通過蒸發(fā)和熱擴散過程，使料的溫度和環(huán)境空氣相平衡， 從而降低顆粒料溫度和水份（粉狀料經(jīng)過蒸汽調(diào)質(zhì)與制粒過程而 增加的溫度與水份部分）的一種過程。 The process of decreasing temperature an

5、d moisture from pellets (which increase by mash conditioning with steam and pelleting process.) 環(huán)境空氣進(jìn)入冷卻器，在一定的時間內(nèi)與顆粒料外表面接觸，直到顆粒料溫度不超過環(huán)境溫度 +5 oC以上, 顆粒水份不超過 12%. by temperature and humidity balance with ambient air through the evaporation and thermal diffusion process, the ambient air is brought in co

6、ntact with the outer surface of the pellets in the cooler within limited duration until the pellet Temperature is less than or equal the ambient temperature +5 oC and the pellets moisture must not be exceed 12%.7Cool AirWarm AirVaporVaporWaterHeat溫度降低原因有： Temperature Decrease by蒸發(fā)(熱用于將液體變成蒸汽）Evapora

7、tion (heat used for change liquid to vapor)熱擴散(熱傳遞出去) Heat Diffusion (heat transfer out)水份降低原因有： Moisture Decrease by蒸發(fā) (蒸汽脫離) Evaporation (vapor move out)運動力 (液體脫離) Kinetic Force (liquid move out)顆粒料冷卻 PELLET COOLING8顆粒料冷卻 PELLET COOLING40 C12%M32 CAmbient Temp.Heat Diffusion32 C11%M32 CAmbient Tem

8、p.Heat BalanceSurface14%M9顆粒料冷卻特性 PELLET COOLING CHARACTERISTIC臥式冷卻器 / CROSSFLOW COOLERAir FlowProduct flowAir Inlet TempAir Outlet TempPellet Begin TempPellet End Temp10逆流式（或立式）冷卻器 / COUNTERFLOW COOLERAir FlowProduct flowAir Inlet TempAir Outlet TempPellet Begin TempPellet End Temp顆粒料冷卻特性 PELLET CO

9、OLING CHARACTERISTIC11顆粒料冷卻曲線圖 PELLET COOLING PROFILEEvaporationStageThermal DiffusionAmbient Temperature 30 CRelative Humidity 70 %12EvaporationStageLiquid & VaporMovementAmbient Temperature 30 CRelative Humidity 70 %顆粒料冷卻曲線圖 PELLET COOLING PROFILE1314冷卻過程影響因素 The factors effected to cooling proces

10、s.顆粒狀態(tài) Pellets - 溫度 Temperature - 水份 Moisture - 密度 Density - 大小和形狀 Size & Shape - 油脂噴涂 Fat Coated152. 環(huán)境空氣 Ambient Air - 溫度 Temperature - 相對濕度 Relative Humidity - 風(fēng)量 Volume - 蒸氣壓力 Vapor Pressure - 空氣中水份與蒸氣濃度 Water content and vapor content in the air顆粒料在空氣中的流動時間 Time that pellets move within the air

11、冷卻過程影響因素 The factors effected to cooling process.16EVAPORATIONTHERMAL DIFFUSIONLIQUID& VAPOR MOVEMENTPRODUCT INPRODUCT OUTMOIST AIR INMOIST AIR OUT17影響動物消化的因素 Animal digestion factors1. 蒸發(fā) Evaporation - 顆粒溫度 Pellet temperature - 顆粒濕度 Pellet moisture - 油脂噴涂 Fat coating - 風(fēng)量 Air volume - 蒸氣壓力 Vapor pr

12、essure182. 熱傳遞 Heat transfer - 顆粒溫度 Pellet temperature - 顆粒密度 Pellet density - 顆粒大小與形狀 Pellet size and shape - 油脂噴涂 Fat coating - 風(fēng)量 Air volume - 空氣溫度 Air temperature - 顆粒停留時間 Pellet dwell time影響動物消化的因素 Animal digestion factors193.4 因機械和化學(xué)作用造成的蒸氣/液體流動 Vapor / liquid movement by mechanical and chemic

13、al force - 顆粒水份 Pellet moisture - 顆粒密度 Pellet density - 顆粒大小與形狀 Pellet size and shape - 風(fēng)量 Air volume - 空氣相對濕度 Relative humidity of air - 空氣蒸發(fā)壓力 Air vapor pressure - 空氣中水份與蒸氣濃度 Moisture and vapor air content - 顆粒停留時間 Pellet dwell time影響動物消化的因素 Animal digestion factors20冷卻過程需要的風(fēng)量 Air Volume Required

14、for Cooling Process為降低1000 KGs.顆粒料溫度與水分: 進(jìn)料溫度 90 C 出料溫度 33 C進(jìn)料水份 15% 出料水份 12%采用30 C 的環(huán)境空氣冷卻器空氣出口溫度 45 CTo decrease temperature and moisture of 1000 KGs.-pellets Pellets Inlet Temp. 90 C Pellet Outlet Temp. 33 CPellets Inlet Moisture 15% Pellet Outlet Moisture 12%By using the ambient air at 30C Outle

15、t temperature from cooler 45 C冷卻過程空氣需要量經(jīng)驗計算Practical calculation for finding air volume uses for cooling process21將顆粒水分從15% 降低到 12%:水分 15% 意味著顆粒 1000 KGs. 包括水 150 KGs.和干料 850 KGs.水分12%意味著顆粒 100 KGs. 由干料 88 KGs. 和水 12 KGs.組成.故此, 如干料有850 KGs. 水則有 12 x 850 /88 = 116 KGs.那么蒸發(fā)掉的水就是 150-116 = 34 KGs.To de

16、crease moisture from 15% to 12%Moisture 15% means the pellets 1000 KGs. Consist of water 150 KGs.and dry component 850 KGs.Moisture 12% means the pellets 100 KGs. Consist of dry component 88 KGs. and water 12 KGs.So,If there are dry component 850 KGs. water 12 x 850 /88 = 116 KGs.Then must be evapor

17、ated water 150-116 = 34 KGs.冷卻過程空氣需要量經(jīng)驗計算Practical calculation for finding air volume uses for cooling process冷卻過程空氣體積需要量 Air Volume Required for Cooling Process22冷卻過程空氣體積需要量 Air Volume for Cooling Process自顆粒傳遞的熱: / Heat transfer from pellets: 由: Q = mc (t2 - t1)Q = 1000*1.8*(33 - 90) = -102,600 KJ.

18、將 1 KG.水蒸發(fā)變成蒸氣需要的熱量 = 2,360 KJ.Heat used to evaporate water 1 KG.to vapor故; 蒸發(fā) 34 KGs.水需要的熱量 So; Heat used to evaporate water 34 KGs. = 34*2,360 KJ. = 80,240 KJ顆粒必須傳遞的熱量 Heat must be transferred from pellets = 80,240 - 102,600= 22,360 KJ.23空氣體積需要量: / Air volume required:由 Q = mc (t2 - t1)故; 22,360 =

19、 m*1*(45 - 30)空氣重量需要量 (m). / Air weight required(m) = 22,360 / 15 = 1,490 KGs單位空氣體積重量 / Weight of air by volume = 1.2 KGs./ 1 m3故; 空氣體積需要量 / So; Air volume required = 1,490 / 1.2 = 1,240 m3估計的空氣體積需要量 1,200 m3/ton-顆粒Estimated air volume require 1,200 m3/ton-pellets冷卻過程空氣體積需要量 Air Volume for Cooling P

20、rocess24顆粒位置與空氣流量對環(huán)境空氣與顆粒間的蒸發(fā)和熱擴散的影響Evaporation and Thermal Diffusion Effected between Ambient Air and Pellets at Different Layer And Different Air Volume25冷卻器后顆粒溫度、水份與空氣流量之間的關(guān)系 Relation of Temperature, Moisture of pellets after cooler and Air Volume低溫,低水份Low Temp., Low Moisture 高溫，高水份Highest Temp.,

21、 Highest Moisture 1800 m3/t正常溫度，正常水份Normal Temp., Normal Moisture26空氣流速過高的影響 Effected from Excessive Air Velocity滑動式排料機構(gòu)的適宜氣流速度: 1.2 m/s (在冷卻機最大產(chǎn)能上)翻板式排料機構(gòu)的適宜氣流速度: 1.3 m/s (在冷卻機最大產(chǎn)能上)Appropriate air velocity for Slide Grid Discharge System : 1.2 m/s at max cooler capacityAppropriate air velocity for

22、 Swivel Valve Discharge System :1.3 m/s at max cooler capacity27 不能排料或排料不連續(xù); Cannot discharge pellets from cooler or inconsistent discharge 顆粒開裂或風(fēng)道吸入粉塵; Cracked pellets or dust is sucked up to air duct. 料層一直上下移動,使顆粒料在冷卻器中停留時間變化不定。 因而造成顆粒料排出冷卻器后有效水份和溫度不均。 Pellets layer move up and down all the time a

23、nd cause the time of pellets in cooler are different. So these effect moisture and temperature after discharge cooler are uneven. 引起料層出現(xiàn)空洞，使多數(shù)冷卻空氣由此穿過。 Cause of the holes in the product layer. So most air is flowed through these hole空氣流速過高的影響 Effected from Excessive Air Velocity2829逆流式冷卻器的主要部件 Impor

24、tant component of COUNTERFLOW COOLER1. 喂料閉風(fēng)器 INLET ROTARY VALVE2. 頂蓋 / HOOD3. 分料器 / PRODUCT DISTRIBUTOR4. 冷卻室 / COOLER BIN5. 排料門 / DISCHARGE GATE6. 支架 / SUPPORT FRAME7. 集料斗 / COLLECTING HOPPER8. 排料傳感器 DISCHARGE LEVEL SENSOR9. 溢料傳感器 OVERFLOW LEVEL SENSOR10.裝有著火調(diào)溫器的出風(fēng)管 AIR OUTLET WITH FIRE THERMOSTAT

25、30逆流式冷卻器的附屬部件 Accessory part of COUNTERFLOW COOLER31固定分料器 / STATIONARY PRODUCT DISTRIBUTOR分料器 PRODUCT DISTRIBUTOR1. 在上下與水平方向上調(diào)節(jié)分料器以使顆粒料進(jìn)入冷卻機箱體時分散均勻。 Adjust product distributor vertically and horizontally for distribute pellets to the cooler housing.2. 調(diào)節(jié)分料器中間間隙，以控制顆粒料在中間位置和四周的數(shù)量。 Adjust the gap of p

26、roduct distributor for control pellets quantity at the middle and the corner of cooler32旋轉(zhuǎn)分料器 / ROTATING PRODUCT DISTRIBUTOR分料器 PRODUCT DISTRIBUTOR33旋轉(zhuǎn)分料器 ROTATING PRODUCT DISTRIBUTOR調(diào)節(jié)分料器(1)的角度使顆粒料流經(jīng)散料器進(jìn)入冷卻器。Adjust the angle of the product distributor(1) for control the distribution of pellets thro

27、ugh the cooler housing.分料板之間的距離可以靠松掉螺栓(2)來調(diào)節(jié)。下端的間隙應(yīng)大于上端的間隙。The gap between the distributor trays can be adjusted by releasing the bolts (2) and sliding the trays. The lower gap should be larger than the upper gap.34滑動式排料門 SLIDE GRID DISCHARGE GATE35頂部框（1）為固定框，中間框（2）為活動框由電機驅(qū)動, 下面的工作框(3)的位置改變依靠氣缸驅(qū)動TOP

28、 GRID(1) STATIONARY GRID, MIDDLE GRID(2) MOVABLE GIRDDRIVE BY MOTOR, LOWER GRID(3) CHANGE POSITIONDRIVE BY PNUEMATIC CYLINDER排料位置 / DISCHARGE MOVEMENT不排料位置 / CLOSED POSITION清料時，框 (3) 向右移動CLEAN OUT (3) MOVE TO RIGHT動力切斷時，框 (3) 移動到左邊POWER FAIL (3) MOVE TO LEFT滑動式排料門 / SLIDE GRID DISCHARGE GATE36Contro

29、l circuit37翻板式排料門 SWIVEL VALVE DISCHARGE GATE38關(guān)閉位置CLOSED POSITION打開位置OPEN POSITION清料位置CLEAN OUT翻板式排料門 SWIVEL VALVE DISCHARGE GATE39翻板式排料門 SWIVEL VALVE DISCHARGE GATE40關(guān)閉位置CLOSED POSITION打開位置OPEN POSITION清料位置CLEAN OUT翻板式排料門 SWIVEL VALVE DISCHARGE GATE41Timer for delay discharge time of the next stro

30、ke.When “Clean Out” Circuit will force Open solenoid.控制電路 Control circuit42溢料料位傳感器 OVERFLOW LEVEL SENSOR 當(dāng)顆粒料觸到這個傳感器執(zhí)行部位時，控制電路切斷制粒機喂料器。When the product reaches the active part of this sensor, the control circuit will switch off the pellet mill feeder排料料位傳感器 DISCHARGE LEVEL SENSOR當(dāng)顆粒料觸到這個傳感器執(zhí)行部位時，控制電

31、路接通排料門進(jìn)行排料。調(diào)節(jié)排料料位傳感器高度，可以影響到顆粒料在冷卻器里的停留時間。如果蒸發(fā)過程獲得足夠的進(jìn)風(fēng)量，顆粒水份和溫度就會變化。When the product reaches the active part of this sensor, the control circuit will switch on the cooler discharge gate.By adjust the discharge level sensor this effect to the time that pellet be in the cooler. If there are enough ai

32、r volume for evaporation process ,then the pellets moisture and temperature changedOVERFLOW SENSORDISCHARGE SENSORROTARY PADDLE LEVEL SENSOR料位傳感器 Level sensor43由于制粒機或熟化機過熱，冷卻器里可能會發(fā)生著火情況。探測到著火溫度時，著火調(diào)溫器就會停止排風(fēng)風(fēng)機和關(guān)閉風(fēng)閘。Due to overheating in a pellet mill or expander a fire might occur in the cooler. Upon

33、 fire the thermostat stops the exhaust fan and closes damper通常，應(yīng)按將著火控制溫度點調(diào)整到比出風(fēng)口溫度約高出 10C 但不超過 75 CNormally, set point temperature should more than air outlet temperature about 10C or not over 75 C著火調(diào)溫器 / FIRE THERMOSTAT 44逆流式冷卻器的調(diào)整與操作Adjustment and OperationCOUNTERFLOW COOLER45逆流式冷卻器的調(diào)整與操作 Adjustme

34、nt and Operation COUNTERFLOW COOLER1. 運行前的調(diào)整 Adjustment before operation2. 分料器調(diào)整 Pellet distribution adjustment3. 顆粒在冷卻器內(nèi)停留時間 Dwell time of pellet in cooler4. 排料速度 Pellet discharge rate5. 進(jìn)風(fēng)量控制 Air volume control6. 維護(hù)保養(yǎng) Maintenance46運行前的調(diào)整 Adjustment before Operation滑動式排料門 / SLIDE GRID DISCHARGE GAT

35、E在料門的關(guān)閉位置上，將中間框驅(qū)動凸輪的停止排料位置調(diào)節(jié)至行程（B）終端松動螺栓 (9, 10), 將限位開關(guān)（4）移動到要求位置。 Adjust the stopped position of driven cam of the middle grid to the end stroke(B) at theclose position of the gate , Loose screw (9, 10), move limit switch (4) to the required position將中間框驅(qū)動凸輪的停止排料位置調(diào)節(jié)到與頂部框相配，使之能 防止中間框產(chǎn) 生積料。松下螺母 (11)

36、, 拉長或縮短這段距離，使中間框左上端靠近頂部框左下端。 Adjust the stopped position of the middle grid in proportion with the top grid to defendthe remaining product on the middle grid, Loose nut (11), extended or shorten the range until the top left of the middle grid close to the bottom left of the top grid473. 調(diào)節(jié)下部框位置使其與中間

37、框位置相配。 Adjust the position of the lower grid in proportion with the middle grid - 為使運行正常，清料柱塞(5) 須縮進(jìn), 動力切斷柱塞（19）須外伸。 For normal operation the clean out piston(5) must be shrink, the power fail piston(19) must be extend - 順時針方向轉(zhuǎn)動手輪(13) 到底（靠近螺母15）, 在此位置，下部框離開中間框，如 細(xì)節(jié)圖A 所示。如果從冷卻器里面垂直看下去，應(yīng)看不到光線通過，但沿 450

38、 方向則可看見光線通過。 Turn the handwheel(13) in the clockwise direction to the end (close to nut 15), at this position the lower grid is off from the middle grid as shown in detail A. if see from inside cooler in the vertical direction, can not see the light pass through the cooler, but in 450 direction can

39、see the light pass through運行前的調(diào)整 Adjustment before Operation滑動式排料門 / SLIDE GRID DISCHARGE GATE483.將下部框的位置調(diào)節(jié)至與中間框位置相配. / Adjust the position of the lower grid in proportion with the middle grid - 正常運行時，下部框的位置不應(yīng)靠近主（ Stop Boss bar）。下部框的位置應(yīng)離開主止動塊，如細(xì)節(jié)圖B所示。 In normal operation,the lower grid position must

40、 not be close to the Stop Boss bar. The lower grid position is off from the Stop Boss bar as show in detail B. - 不生產(chǎn)時，動力切斷柱塞（19）縮進(jìn)，使下部框移動到靠住主止動塊，致使中間框各處均不發(fā)生漏料。 When the plant is blacked out, the piston Power Fail(19) is shrank and effect to the lower grid move close to the Stop Boss bar , in all pos

41、ition of the middle grid to protect the product leak from cooler4.將止動塊(8)的位置調(diào)節(jié)至與下部框相配, / Adjust the position of the Stop Block(8) in proportion with the lower grid. - 當(dāng)冷卻器放空（清料）時，柱塞(5)伸出,薄片 (16) 須離開止動塊（8） 1 mm。 When the cooler has been emptied(Clean Out). The piston(5) extended, Sheet(16) must be 1

42、mm off from the Stop Block(8)運行前的調(diào)整 Adjustment before Operation滑動式排料門 / SLIDE GRID DISCHARGE GATE49液壓驅(qū)動翻板式排料機構(gòu) / SWIVEL VALVE DISCHARGER HYDRAULICALLY DRIVEN 用筆左右轉(zhuǎn)動開口（4）檢查柱塞（5）的方向，以此 手動操作控制閥 Operate control valve manually by pushing a pen in the right or left opening (4) to test the direction of the

43、 piston (5) 推緊筆端,頂進(jìn)開口(4)10秒,在外接壓力表上觀察釋壓 閥的壓力。壓力的調(diào)整必須使柱塞能完全打開與關(guān)閉 (80 Bars)。 Push the pen on one side into opening(4) for 10 seconds and read on the manometer the pressure of the pressure relief valve. The pressure must be adjusted in such a way that the piston opens and closes completely (80 Bars) 轉(zhuǎn)動

44、順或逆時針方向轉(zhuǎn)動旋鈕（1）可以改變溢流壓力 大小，調(diào)整后應(yīng)用鎖緊螺母（2）鎖緊旋鈕。 The overpressure can be changed by turning knob (1) clockwise or anticlockwise,then the turning knob has to be locked with lock nut(2) after adjusting.運行前的調(diào)整 Adjustment before Operation50液壓驅(qū)動翻板式排料機構(gòu) / SWIVEL VALVE DISCHARGE GATE 限位開關(guān)（Proximity Switch） 與觸頭

45、( Plexiglas)間的間隙應(yīng)為 0 - 1 mm。 Gap between Proximity Switch and Plexiglas should be 0 - 1 mm 限開關(guān)的作用距離應(yīng)調(diào)至距傳桿(3)為2 mm The proximity actived distance is 2 mm from the lever (3) 在關(guān)閉位置，滑門（A）間的間隙應(yīng)大約 為顆粒料直徑的3倍(10 mm.) At close Position ,the distance between gate (A) should be approximately 3 times of product

46、 diameter (10 mm.) 在運行開始動作位置上，打開傳感器應(yīng) 距離關(guān)閉傳感器大約20 mm 。 As the beginning of operation move the opened sensor far away from closed sensor approximately 20 mm運行前的調(diào)整 Adjustment before Operation51液壓驅(qū)動翻板式排料機構(gòu) SWIVEL VALVE DISCHARGE GATE運行前的調(diào)整 Adjustable before Operation 限位開關(guān) (Proximity Switch) 與觸頭 (Plexigl

47、as) 的間隙在 1 mm 以內(nèi) Space between Proximity Switch and Plexiglas must be less than 1 mm. 限位開關(guān)的感應(yīng)部分離開傳桿 2 mm The sensing part of proximity switch is 2 mm off from the stick(3) 在關(guān)閉位置 : 相鄰的兩個翻板之間的 間隙大約 是所生產(chǎn)顆粒料直徑的三倍 Close Position: Put “Close” switch on approximately 3x product diameter (d) (A = 3d, A is a

48、bout 10 mm.)52冷卻器額定排料量調(diào)整 Adjustable Product Discharge Capacity from Cooler通過調(diào)整額定排料量至與額定進(jìn)料量相匹配，就能使顆粒料層在冷卻器里得到穩(wěn)定，造成流經(jīng)顆粒料層的空氣能規(guī)則流動，從而可使冷卻均勻。By adjust discharge capacity in proportion with intake capacity this will stabilize the product layer in cooler. So the air pass through the product layer is regul

49、ar flow, this will even the cooling process順時針方向轉(zhuǎn)動手輪，使下部框向左移動至與中間框具有較小的間隙，可以減小額定排料量。相反地，逆時針方向轉(zhuǎn)動手輪，使下部框向左移動至與中間框具有較大的間隙，可以提高冷卻器額定排料量。By turn the handwheel clockwise, this will move the lower grid through the left cause less gap in proportion with the middle grid and discharge capacity are decreased.O

50、n the contrary by turn the handwheel anticlockwise, this will move the lower grid through the right cause more gap in proportion with the middle grid and discharge capacity are increased滑動式排料 /SLIDE GRID DISCHARGE53通過移動 “打開傳感器” (1) 離開“關(guān)閉傳感器” (2)，可以提高冷卻器額定排料量。By move “Open Sensor” (1) far away from “

51、Close Sensor” (2) this will increase discharge capacity from cooler.翻板式排料 / SWIVAL VALVE DISCHARGE12通過調(diào)整額定排料量至與額定進(jìn)料量相匹配，就能使顆粒料層在冷卻器里得到穩(wěn)定，造成流經(jīng)顆粒料層的空氣能規(guī)則流動，從而可使冷卻均勻。By adjust discharge capacity in proportion with intake capacity this will stabilize the product layer in cooler. So the air pass through

52、the product layer is regular flow, this will even the cooling process.冷卻器額定排料量調(diào)整 Adjustable Product Discharge Capacity from Cooler54氣流速度調(diào)節(jié) Adjustable Air Flow Rate靠與控制電機電流設(shè)定值比較，采用“空氣流動控制閥”來 控制風(fēng)閘，以調(diào)節(jié)通過顆粒料層空氣的氣流速度。“AIR FLOW CONTROL VALVE” controls the damper by compare motor current with set point for

53、 the regular air flow rate through the product layer55風(fēng)量不足的原因 (初次運行) Causes of Inadequate Air Volume (From the first operation)風(fēng)機型式不正確 Use wrong type of exhaust fan風(fēng)機太小 Too small exhaust fan風(fēng)機壓力太低 Too low exhaust fan pressure風(fēng)機速度太慢 Too slow exhaust fan speed風(fēng)門太小 Too less damper area風(fēng)道太小 Too small air duct沙克龍?zhí)?Too small Cyclone56風(fēng)量減少的原因 Causes of Air Volume Dropped 風(fēng)機轉(zhuǎn)動方向不對 Fan run in wrong direction 風(fēng)道、進(jìn)風(fēng)口或沙克龍堵塞 Duct, Air inlet or Cyclone are clogged 風(fēng)機驅(qū)動皮帶松動 Fan driving belt loosed 風(fēng)門關(guān)閉或損壞 Damper is closed or damaged 風(fēng)機速度(rpm) 減少(因皮帶輪變化) Fan speed (rpm)