Hkaulan mam htu ai jak hta, san seng ai lam hpe pre-cleaner kaw nna hpang ai. Grain shang wa ai hte rau, ndai machine hku nna n san seng ai lam ni hpe shapraw kau na matu-setting up galaw ai majaw ngam ai process ni hpe n-gun n rawng ai sha galaw lu ai.
I. Madung Magam Bungli: N-gun n rawng ai hte n-gun n rawng ai arung arai ni hpe shapraw kau na
Pre-cleaner a madung bungli gaw, shang wa ai raw grain hpe shawng nnan, kaba ai-scale hku jasan jaseng ai lam galaw nna, grai kaba ai (sh) grai n-gun n law ai awu asin ni hpe shapraw kau ai, dai ni hpe hpang na jak ni hte loi loi hte galaw lu ai.
Madung shapraw kau ai lam ni gaw:
N san seng ai arung arai ni:
Nlung kaba ni, lung seng ni, ga nhpu ni, sumri, plastic shingnip, shingkyit shingkyit daw ni, mam n-gu, hpun n-ga, hpun n-ga
Nhtoi a n san seng ai lam ni (model nkau mi hta):
nli tum, nli nli
Kaja ai n san seng ai lam ni (model nkau mi hta):
Nlung kaji ni, nhpu n-gun ni
II. Hkaulan mam htu ai ladat hta shara
Pre-cleaner hpe laksan hku nna san seng ai daw a shawng daw kaw tawn da ai, ngu ai gaw, raw grain hkap la ngut ai hpang shawng nnan na arung arai langai hku nna tawn da ai.
Kalang lang galaw sa wa ai lam a shara:
Raw Grain hpe hkap la ai lam → Pre-San seng ai → Magnetic Separator (ra sharawng ai) → Hka lum ai/n san seng ai hkaulan mam hkai shara ni (Aten kadun laman tawn da ai) → Hpang na hka ja ai arung arai ni (Vibrating Separator, Destoner, Scourer → Dawring, etc.)
Shawng kaw nan tawn da ai lam a lachyum gaw:
Nlung kaba ni hte magri zawn re ai n san seng ai lam ni gaw, n-gun ja ai garan ginhka ai jak ni a screen ni, destoners ni a deck ni, scourers ni a beater elements ni hpe grai hkra machyi shangun nna, hka hkin gau npu na arung arai ni de shang wa yang, roller mill ni a shimlum lam hpe hkrak sha jahten kau na re.
Twine hte plastic sheeting zawn re ai n-gun n rawng ai awu asin ni gaw, htaw sa ai arung arai ni a bearing hte pulley ni hpe loi loi hte shinggrup da nna, pat shingdang ai lam ni byin shangun nna, arung arai ni hpe pyi hkra machyi shangun ai.
Nhprang wan hte nhtoi n san seng ai lam law law hpe shaw kau ai gaw, hka hkin gau npu na daw ni hta nhprang wan n-gun hpe grai shayawm ya nna, bungli galaw ai makau grup yin hpe grau kaja hkra galaw ya lu ai.
III. Bungli Tara hte Madung Amyu Ni
Pre-cleaners ni gaw madung hku nna sieving ngu ai npawt tara hpe jai lang nna, nbung n-gun (sh) magnetic separation hte kayau nna n san seng ai hpe shapraw kau lu na matu lang ma ai.
Madung hku nna masum nga ai.
1. Hkrun lam hkawm ai Pre-San seng ai
Eccentric (sh) vibratory motor gaw screen ntsa hpe n-gun dat nna, shingdu de nhtang wa ai (sh) grup yin shamu shamawt ai lam galaw ai. Dai arai ni gaw screen ntsa kaw leap hku nna shawng de sit sa wa ai. Lahta na screen layer (aperture kaba ai) gaw n san seng ai awu asin ni hpe tawn da nna, lawu na screen layer (aperture kaji ai) gaw san seng ai grain hpe tawn da ai; n san seng ai arung arai ni hte ga nhpu ni gaw screen hku nna hkrat wa ai.
Atsam marai ni: Loi ai hkrang masa, galaw shapraw lu ai atsam kaba, jep chyoi ai atsam grai tsaw ai. Ndai gaw ya aten na madung lata la ai lam rai nna, muk tawng amyu myu a matu htuk manu ai, grau nna kaba ai hte lapran tsang-sized ni a matu htuk manu ai.
2. Rotary Drum hpe shawng-san seng ai
Polygonal (sh) grup yin shinggrup ai drum hpe n-gun dat nna, hka htung ni lawm ai. Drum gaw loi loi hte shinggrup nga ai. Material gaw drum kata de shang wa ai; shi shinggrup nga ai shaloi, mam gaw hka htung ni hku nna hkrat wa nna, hka htung a jahtum kaw nna n san seng ai arung arai ni pru wa ai.
Atsam marai ni: ngang kang ai gawgap ai lam, n san seng ai arung arai ni hpe shapraw kau lu ai, ngang grin ai bungli galaw ai lam. Raitim, shi gaw grau kaba ai lagaw n-gun nga ai rai nna, n-gun ja ai n san seng ai hpe shaw kau lu ai atsam kaba ai hte galaw shapraw lu ai atsam kaba ra ai masa ni a matu htuk manu nga ai.
3. Kahkyin gumdin ai Pre-San seng ai
Vibrating screen (sh) drum screen hpe madung tawn nna, aspiration system hte magnetic garan ginhka ai ladat hpe hpawng de da ai. Aspiration system gaw nhtoi a n san seng ai lam ni hpe (ga nhpu, awns, htum mat sai mam) hpe shapraw kau ya nna, magnetic separator gaw magnetic metal n san seng ai arung arai ni hpe shapraw kau ya ai.
Atsam marai ni: Hkrum zup ai bungli galaw ai lam, kaja ai hku san seng ai lam, n-gun n law ai lagaw n-gun. Dai ni na aten na hkaulan mam htu ai jak ni a matu htuk manu ai, automation grai tsaw ai.
IV. Bungli galaw ai ladat
Ga shadawn hku nna, n-gun rawng ai pre-cleaner hpe lang nna, bungli galaw ai lam gaw lawu na hte maren rai nga ai:
Infeed: Raw grain gaw pre-cleaner a feed inlet de htaw sa ai arung arai ni hku nna shang wa nna, screen ntsa ni hta maren mara garan pru wa ai.
Hkrang shapraw ai lam:
Lawu na Screen: Hpaw ai shara ni gaw kaba ai-ga shadawn φ8–12 mm (sh) rectangular n-gun rawng ai shara ni rai nga ai. Nlung, shingkyit, hpun n-ga zawn re ai n-gun ja ai arai ni gaw n mai lai wa ai; shanhte gaw screen kaw na hprawng mat nna, n san seng ai n san seng ai hka hpe shapraw kau ma ai.
Lawu na Screen: Hpaw ai shara ni gaw kaji ai, law malawng gaw φ2.5–4.0 mm re. San seng ai mam gaw ntsa kaw nga nna, san seng ai mam pru ai shara de hkawm sa wa ai. Fine stuff-ga nhpu, nlung kaji ni, daw mat ai kernels-ni hkrat nna undersize hku nna pru mat wa ai.
Aspiration (hkap la ai rai yang): Aspiration system gaw, lusha jaw sha ai (sh) jep chyoi ai shaloi, nhtoi htoi ai awu asin ni-awn, n-gun yawm mat ai mam, ga nhpu- hpe shaw la nna, shara langai kaw sha shinggyin la lu ai.
Magnetic Separation (nga ai rai yang): Magnet ni (hpring tsup ai (sh) wan n-gun rawng ai) ni gaw shang wa ai shara (sh) pru wa ai shara kaw dung nna, magnetic nlung n-gang ni hpe rim la nna shaw kau ai.
Discharge: Jahtum na matu tawn da na matu, hkaulan mam baw ni hpe silo ni de jasan jaseng kau u. N san seng ai arung arai ni, n san seng ai arung arai kaji ni, n san seng ai arung arai ni, magri awu asin re ai arung arai ni langai hte langai tinang a mahkawng da ai shara de sa wa ai.
V. Madung Hpaji masa hte shanhte a akyu ara
Pre-cleaner a bungli galaw ai lam gaw, san seng ai daw ting a akyu rawng ai lam hte ngang grin ai lam hpe hkrak hkra machyi shangun ai:
Hpaga lam galaw lu ai atsam: Hkaulan mam htu ai jak a galaw shapraw ai shadawn shadang hte maren rai ra ai. 100-ton/shani hka htung langai a matu, pre-cleaner a n-gun gaw, n-gun 120-150 ton/shani (peak flow hpe myit yu yang) rai ra ai.
Screen Aperture hpe gara hku gram lajang na: Aperture a kaba ai hte hkrang hpe lata na matu grai ahkyak ai. Grai kaji yang, screen ni gaw pat mat nna, san seng ai mam nkau mi hpe n san seng ai hte shut ai hku screen galaw kau chye ai. Grai kaba ai rai yang, n hkru n kaja ai arung arai nkau mi gaw, hka hkin gau na jak ni de lai mat wa chye ai.
Screening Efficiency: San seng ai mam kaw na n san seng ai arung arai ni hpe atsawm sha shapraw kau lu ai shadawn shadang. Grai kaja ai pre-cleaner gaw 95% jan na nhprang arai ni hte n-gun n rawng ai nhprang arai ni a ahkyak ai daw hpe shapraw kau ra ai.
Grain Loss in Reject: San seng ai mam hpe shapraw kau ai n san seng ai arung arai ni hta kayau ai garan ginhka ai lam. Ndai gaw pre-san seng ai bungli galaw ai lam a madung sut masa masat kumla langai rai nga ai. Grain sum ai lam law ai gaw raw material hpe jahten kau ai hpe madun nna bungli galaw ai lam hpe galai shai ra ai.
Self-Cleaning Ability: Screen ntsa ni hta n-gun n rawng ai hte san seng ai arung arai ni (ga shadawn, bouncing balls, san seng ai brushes) ni hpe bang da ai rai yang, matut manoi bungli galaw ai a ngang grin ai lam hpe hkrak sha hkra machyi shangun ai.
VI. Gadun dawk
Gawgap ai lam hta loi ai raitim, pre-cleaner gaw muk tawng langai hta galai shai n mai ai zai ladat shara hpe hkam la nga ai:
Equipment Protector: Shawng nnan na ahkyak dik htum arung arai ni hpe makawp maga ya ai shingdu lam hku nna magam gun nna, hpang na manu dan ai arung arai ni (grau nna roller mill ni) hpe n san seng ai arung arai ni a majaw hkra machyi ai lam ni hpe atsawm sha makawp maga ya lu ai.
Production Continuity Ensurer: Twine hte plastic sheeting zawn re ai loi loi hte n san seng ai arung arai ni hpe shaw kau ya ai hku nna, htaw sa ai ladat hpe ngang grin hkra galaw ya lu nna, n myit da ai aten hpe mung shayawm ya lu ai.
Process Efficiency a matu npawt nhpang: Lawu na n-gun ja ai san seng ai arung arai ni a matu kaja ai bungli masa ni hpe shabyin ya ai, shanhte hpe mam hte bung ai n san seng ai arung arai ni hpe shapraw kau na matu myit maju jung shangun ai ("same-size impurities"), dai hku nna san seng ai daw a yawng a bungli hpe grau kaja hkra galaw ya lu ai.
Ga shadawn hku tsun ga nga yang, pre-san seng ai wa gaw, muk tawng a "goalkeeper" rai nga ai. Hpaga lam yawng a shawng lam hta jung da ai, dan dawng dik ai hte hkrit tsang hpa "hpyen gasat ai ni" hpe pat shingdang na matu ngang kang ai hte hkrak ai ladat hpe jai lang nna, hpang na hkrak tup ai arung arai yawng hpe shim lum ai hte hkrak ai hku galaw lu na matu ngang kang ai npawt nhpang hpe gaw gap da ai.
