設(shè)備維護(hù)成本降低:變頻器改進(jìn)后,啟動(dòng)順暢,降低了對(duì)電機(jī)軸承的影響。在正常運(yùn)行期間,大部分時(shí)間頻率在50Hz以下。減少了對(duì)機(jī)械系統(tǒng)的磨損,從而減少了對(duì)設(shè)備的維護(hù);同時(shí)也延長(zhǎng)了設(shè)備的使用壽命。糖汁萃取是整個(gè)過(guò)程中的重要組成部分。按照有關(guān)的數(shù)據(jù)分析,萃取率每提高1%,糖的總回收率會(huì)增加0.88%-0.92%。現(xiàn)如今,萃取技術(shù)趨向于提高甘蔗預(yù)壓,來(lái)增加壓榨機(jī)的產(chǎn)能,通過(guò)使用壓力進(jìn)料輥,以提高壓榨機(jī)的進(jìn)料速度。在壓榨的過(guò)程中,影響萃取率因素有很多,比如:
1.蔗渣中的糖損失,在甘蔗壓榨時(shí),甘蔗汁從蔗渣分離。但蔗渣充滿纖維,會(huì)引起壓榨機(jī)出口膨脹并吸收部分甘蔗汁。同時(shí)由于壓榨機(jī)工作效率,糖不能100%從甘蔗中壓出。
2.甘蔗的破碎,尤其是在預(yù)壓時(shí),甘蔗破碎和形狀是確保整個(gè)碾碎系統(tǒng)質(zhì)量的關(guān)鍵點(diǎn)。有了良好的破碎,甘蔗汁就很容易被壓出,萃取效果會(huì)增加。
3.蔗渣的水分含量,降低蔗渣中的水分含量是增加萃取的方法。
4.切碎機(jī)的材料均勻性,來(lái)自切碎機(jī)的蔗層厚度的均勻性對(duì)提高萃取率非常重要。如果蔗層太厚,由于壓榨不完全,蔗渣造成浪費(fèi);如果太薄,由于蔗渣的含水量過(guò)高,則會(huì)降低萃取率。
5.壓輥機(jī)械磨損,在壓榨后段,機(jī)械磨損越來(lái)越嚴(yán)重,導(dǎo)致增加壓輥之間的間隙,從而降低了萃取率。
總之,當(dāng)使用壓送輥(即齒狀進(jìn)料輥)方法時(shí),在進(jìn)料和預(yù)壓過(guò)程中會(huì)使用傳統(tǒng)的恒速控制方法。它會(huì)導(dǎo)致來(lái)自切碎機(jī)的蔗層厚度轉(zhuǎn)化有大概10%的不合格,并致使甘蔗汁的平均萃取率低于95.4%。更低的萃取率表示甘蔗汁的更多損失,導(dǎo)致更低的生產(chǎn)輸出。蔗層太厚將導(dǎo)致壓送輥被卡住,嚴(yán)重影響生產(chǎn)。
當(dāng)使用速度控制壓榨機(jī)時(shí),如果蔗層厚度不夠厚,電機(jī)速度將會(huì)降低。壓榨過(guò)程將停止并等候,直到達(dá)到合格厚度,確保完全壓榨并增加平均萃取率0.2%以上。同時(shí)由于降速降流,實(shí)現(xiàn)了節(jié)能目標(biāo)。
2.項(xiàng)目分析
技術(shù)升級(jí)使得一家領(lǐng)先的泰國(guó)糖廠已經(jīng)把產(chǎn)能提高到了10000噸/日,超過(guò)160萬(wàn)噸/年。
下面是升級(jí)后的產(chǎn)線圖:Press the connector button for the second time - press to trigger the semi-automatic connector control program to complete the connector;
6. Joint success - the spinner spins normally;
7. Joint failure - repeat the above joint process until successful.
(2) . original documents requiring time control
1. Cotton roller
2. Yarn sinking electromagnet
3. Drop electromagnet
Yarn sinking time T1 barrel dropping time T2 press the button for the first time to feed cotton to the cotton roller synchronously, and stop when it is released; Then start the preparation process; Then press the second button, the cotton feeding roller starts to feed cotton continuously, and the yarn sinking electromagnet acts after T1 time to complete the yarn forming action; After the second button start T2 time, the barrel dropping electromagnet starts to act to complete the yarn sinking action. The difference between pillow packaging machine and vertical packaging machine is mainly divided in the shape of packaged food. Vertical packaging machine mainly packs granular, powdered and liquid food, while pillow packaging machine mainly packs some block food with certain