I. 1999-a hnathawh bulpui ber chu .Solenoid valve te pawh a awm .
Solenoid valve, electro-pneumatic conversion atana key component angin, electrical signals te chu pneumatic signal-a convert tha taka siam tura mawhphurhna chu a phur a ni. Control instruction a dawn hnuah solenoid valve chuan compressed air-a flow direction chu chiang takin a release thei a, a titawp thei a, a thlak thei bawk a, chu chuan function hrang hrang a nei thei a, chutah chuan pneumatic actuator component action direction control, on/off switch quantity control, leh or/not/and logic control te pawh a tel a ni. Solenoid valve chi hrang hrang zingah hian electromagnetic control directional control valve hian core position a keng tel a, hmun pawimawh tak a chang bawk.
II a ni. Electromagnetic control dan tur kalphung (Wortion Principle) a ni a, a hnuaia mi ang hian a ni.
Pneumatic system-ah chuan electromagnetic control directional control valve hian hmun pawimawh tak a chang a. Air flow channel hawn leh khar dan tur control emaw, compressed air flow direction thlak emaw hna a thawk a ni. A core working principle chu electromagnetic coil-in a siam chhuah electromagnetic force-ah a innghat a ni. He force hian valve core chu switch turin a khalh ang a, chu chuan airflow reversing tum a ti thei ang. Electromagnetic control part-in directional control valve a nawr dan hrang hrang angin electromagnetic control directional control valve te chu chi hnih ah then theih a ni a, chungte chu direct-acting leh pilot-operated a ni. Direct-Acting Solenoid valve te hian direct takin electromagnetic force hmangin valve core chu reverse direction-ah an khalh a, chutih laiin pilot-operated directional control valve te chuan electromagnetic pilot valve atanga pilot air pressure lo chhuak chu an rinchhan a, valve core chu reversing an tih theih nan an khalh a ni.
Figure 1-ah hian 3/2 (three{4}}way two{{5}position pathum) direct-acting solenoid valve (normally open type) leh a hnathawh dan principle-a cross{{1}sectional view awlsam tak a lang. Coil chu energized a nih chuan static iron core chuan electromagnetic force a siam ang a, chu force chuan valve core chu chunglam pan turin a nawr ang. Valve core a san chuan gasket chu a chawi sang a, chutiang chuan port 2 leh 3 te chu a inzawm loh laiin port 1 leh 2 te chu a inzawm tir a, hetiang lai hian valve chu intake state ah a awm a, cylinder kal dan a control thei a ni. Power an cut off hnuah chuan valve core chu a original state-a kir leh turin spring restoring force-ah a innghat ang a, chu chu port 1 leh 2 chu a inzawm lo a, port 2 leh 3 chu a inzawm thung. Chutiang chuan valve chu exhaust state ah a awm a.
Figure 2-ah hian 5/2 (Five-way two{{5}position) direct-acting solenoid valve (normally open type) leh a hnathawh dan principle-a sectional view awlsam tak a lang. A tir lamah chuan port 1 leh 2 hmangin air intake a awm a, exhaust erawh chu port 4 leh 5 hmangin a thleng thung a, coil chu energized a nih chuan static iron core chuan electromagnetic force a siam chhuak thin. He force hian pilot valve chu a thawk thei ang a, chutah chuan compressed air chu air path kaltlangin valve pilot piston-ah a lut ang a, chu chuan piston chu a tan tir ang. Piston lai takah chuan sealing circular surface chuan channel chu a hawng a. Hetih lai hian port 1 leh 4 atang hian boruak a lut a, port 2 leh 3 atang chuan boruak a chhuak a, power a tlak hnuah chuan pilot valve chu a hmaa a dinhmun anga kir leh turin spring restoring force ah a innghat ang.
A dawtah chuan solenoid valve hnathawh dan tur kan sawi dawn nia. Electromagnetic valve hnathawh dan chu number pahnih in a tarlang a, chu chu m leh n a ni a, chu chu m-path n{{2}position electromagnetic valve an ti a. Chumi zingah chuan "n position" hian directional control valve, chu chu valve dinhmun a ni tih a entir a ni. Valve position awm zat hi N value a ni a, entirnan, two-position valve hian position option pahnih a nei a, chu chu state pahnih a nei tihna a ni. Pathum{{8}position valve hian position option pathum a nei a, chu chu state hrang hrang pathum a awm tihna a ni. "M path" hian valve pawn lam interface awm zat a tarlang a, chutah chuan air inlet, air outlet leh exhaust port te pawh a tel. Pathways awm zat chu m value a ni.
Entirna atan Figure 1-a valve hi la rawh. 3/2 direct- acting solenoid valve a ni a, chu chu valve hian position pahnih a nei a, chungte chu "on" leh "off" state te an ni. Chutih rual chuan air port pathum a nei bawk: 1 chu air inlet a ni a, 2 chu air outlet a ni a, 3 chu exhaust port a ni.
Solenoid valve airway atanga thlirletna .
Gas path diagram veilam tawp lamah chuan a veilam hla takah symbol hian a hnuai lam spring a entir tlangpui. A laiah chuan valve body a awm a, chutah chuan solenoid valve chi hrang hrang hriat theihna tur key information a awm a. Entirnan, figure-a box pahnih hian hei hi two-position solenoid valve a nih thu a tarlang a, A/B/R/P/s hian valve body-a hole awmna hmun a entir a, chu chu panga-way valve a ni. Chuvangin, he solenoid valve hi two-position panga{6}}way solenoid valve a ni. Chutiang bawkin bits awm zat leh solenoid valve pass zat chu hole awm zat leh box awm zat atang pawhin kan hre thei bawk.
Tin, gas path diagram hian power off laiin gas path operation route te a entir bawk a, power on lai te pawh a tarlang bawk. Power an tihtawp chuan air path chu Hole P kaltlangin a lut a, actuator-ah hole A kaltlangin hna a thawk a, chutah chuan Hole B kaltlangin a kal a, a tawpah chuan Hole S atangin a chhuak a, chutih lai chuan hole R chu a khar reng a ni. Power on a nih chuan hole P atang pawhin boruak kawng a lut a, mahse hetih lai hian Hole B atangin boruak a chhuak a, actuator-ah hna a thawk a, Hole A a paltlang a, a tawpah chuan Hole R atangin a chhuak a, chutih lai chuan Hole S chu a khar a ni.
Figure 3-a dinglam hian a tlangpuiin coil emaw pilot small valve emaw a entir a, chungte chuan solenoid valve hnathawhnaah hmun pawimawh tak an chang a ni. Heng airway diagram-te hi kan hrilhfiah hian solenoid valve hnathawh dan leh boruak hrang hrang hnuaia thawkna kawng (airway) hnathawh dan hriatthiamna thuk zawk kan nei thei a ni.
Figure 4-ah hian pneumatic solenoid valve-a electrical schematic diagram a awm a. Electrical schematic diagram hi electromagnetic valve hnathawh dan hriatthiamna kawng pawimawh tak a ni. Coil, contacts, leh electrical component dangte nena inzawmna inzawmna a tarlang chiang hle. Electrical schematic diagram kan en hian solenoid valve-a electrical change chu power on leh off a nih chuan hriatthiamna thuk zawk kan nei thei a, chu chuan a hnathawh dan a hre chiang zawk thei a ni.
iv. Single-Control Solenoid Valve leh Double-Control Solenoid Valve te thlan dan
Single electrically controlled solenoid valve hi a hming ang bawkin coil pakhat chauh dah a ni. Power on a nih chuan a danglam ang a, state dang a lut leh ang. Power a cut off chuan a original state ah a kir leh nghal mai ang. He working principle hi Figure 5-ah hian kan hmu a, chutih rualin double electro-controlled solenoid valve-ah hian coil pahnih dah a ni. Coil hrang hrangte energized state control-na hmang hian switch tam tak a nei thei a, power a neih hnuah pawh a hmaa a dinhmun chu a la vawng reng thei a ni-OFF, Figure 6-a kan hmuh ang hian, he functional difference hian practical application-a an duhthlanna hrang hrangte chu direct-in a tichiang a ni.
Figure 5 leh 6-ah hian single-control solenoid valve leh double-control solenoid valve-te hnathawh dan (working principles) a awm a. Selection i siam dawnin, valve reversing time a tawi deuh chuan, pakhat-control solenoid valve chu a handle theih nan a tawk a ni. Mahse, commutation hun rei tak a nih chuan coil chu power on chhunzawm zel a ngai a, chu chuan power-on rei tak a awm avangin coil a ti lum thei a, a kang chhuak thei bawk. Hetiang dinhmun hi pumpelh tur chuan double-control valve thlan theih a ni. Tin, power a chhiat hnua reset function a awm a ngai a nih chuan electrically controlled solenoid valve pakhat chauh a tha zawk. Power failure hnua tuna state awm mek chu vawng reng a ngai a nih chuan double-control solenoid valve chu a tha zawk.
V. Pilot-Operated solenoid valve leh direct-acting solenoid valve te inkara danglamna leh hman dan
Solenoid valve chi hrang hrang zingah hian pilot-operated leh direct-acting hi chi hnih a awm a. Working principle leh application scenario-ah an danglam hle. Pilot-Operated solenoid valve te hian gas leh liquid inkarah pilot holes hmangin an inthlak a, direct-Acting solenoid valve te hian valve core kal dan tur control turin pressure danglamnaah an innghat thung. Hetianga danglamna hian solenoid valve chi hnih te hian industrial demand hrang hrang an chhan hunah anmahni hlawkna an nei ve ve a ni. Entirnan, thil awmdan thenkhatah chuan rang taka chhanna leh sensitivity sang tak mamawhnaah chuan direct-acting solenoid valve te hi a tha zawk thei. Fine control leh energy consumption hniam zawk mamawhna hmunah chuan pilot-operated solenoid valve te hian edge an nei thei a ni.
Direct-acting solenoid valve te structural design hi a awlsam hle. An hnathawh dan ber chu electromagnetic force-ah a innghat ber a, chu chuan valve core chu a thawk turin direct-in a khalh a ni. Mahse, he design hian tlakchhamna lian tak pahnih a nei bawk. Pakhatnaah chuan electromagnetic force mamawhna nasa tak avang hian electromagnet coil volume pawh a sang chho zel a, chu chuan energy consumption sang zawk a thlen a ni. Pahnihnaah chuan direct-acting solenoid valve te hi pressure lakah an sensitive hle. Pressure hian limit engemaw zat (a tlangpuiin 0.7mpa aia tam) a pelh chuan direct-acting solenoid valve tam tak chu a thawk tha thei lo. Hei hi a chhan ber chu valve core-a pressure sang lutuk a thawh vang a ni a, hei vang hian electromagnetic force tan valve core chu hnathawh tir a harsa hle. Chuti chung chuan direct-acting solenoid valve te pawhin an thatna an nei bawk: simple structure, man tlawm leh failure rate hniam.
2. Pilot-Operated solenoid valve hi fing takin a design a ni. Traditional electromagnetic force drive chu a kalsan a, chu ai chuan air pressure hmangin valve core chu hna thawk turin a khalh a ni. Solenoid valve diameter 4mm aia tam tan chuan pilot valve leh main valve atanga siam an ni tlangpui. Solenoid valve chu power on a nih hnuah pilot valve chu a inhawng ang a, a output signal hmangin main valve hawnna chu a control ang. Hriat tur chu main valve hi a takah chuan pneumatic control valve a ni a, a hnathawh dan tur chuan air source pahnih coordinated action a ngai a ni: pakhat chu main valve air source a ni a, pakhat chu pilot valve air source a ni.
Main air source chuan solenoid valve chhunga boruak kal tlanga pilot valve-a boruak a supply chuan he design hi internal pilot type an ti a. Pilot valve hi main gas source atanga innghat lo source atanga gas supply a nih chuan external pilot type an ti a. Figure 8-ah hian veilam sir hian external pilot-operated solenoid valve entir a ni a, dinglamah chuan internal pilot-operated solenoid valve entir a ni thung.
Internal lead leh external lead te physical comparison chu a hnuaia figure ah hian tarlan a ni.
Heng solenoid valve chi hnih, internal pilot leh external pilot te hi system khatah an awm dun fo thin. A tlangpuiin internal pilot hian hun tam zawk mamawh a phuhruk thei tawh thin. Mahse, thil awm dan bik thenkhatah chuan pawn lam hruaitute chu a tul zual sauh sauh a ni. Entirnan, main valve-a gas source pressure a inthlak a, 0.2mpa aia hniam a tlak chuan, emaw, vacuum environment-a a awm laiin, pilot valve-a gas source chu main valve-a gas source chu share theih a nih loh avangin, chuti lo chuan main valve chu a inhawng thei lo thei a ni. Hetih lai hian pilot valve power pe tur chuan independent air source 0.2Mpa aia sang pressure nei a ngai a ni. Chu bakah, air inlet leh outlet inkara pressure danglamna a tam hle a, emaw, main airway pressure 1MPA aia tam a nih chuan, internal pilot chuan valve core-a airway pressure direct-a load-in structural volume a tihpun a ngai mai thei bawk. External pilot chuan electromagnetic valve dah ngai lovin gas channel pakhat chu pilot port-ah direct-in a luhtir a, chu chuan buaina chu a chinfel sak a Air pipe chauh dah belh a ngai a ni.
Thutawp atan chuan pilot-operated solenoid valve te hian electromagnetic head te te leh power hman tlem te thatna an nei a ni. Aesthetically pleasing tak a ni a, installation space a save bawk. Chutih laiin, a lumna a siam tlem zawk a, chakna mak tak a nei bawk-saving effect. Chu aia pawimawh zawk chu, heat generation hniam tak avang hian coil hi a kang chhuak tlem zawk a, hun rei tak chhung power on theih a ni bawk. Hei hi practical application-ah chuan a pawimawh hle. Entirnan, SMC atanga solenoid valve thenkhat power chu 0.1W thlenga tihhniam a ni a, hei hian overheating awm lovin power supply chhunzawm zel a ti thei a ni. Direct-acting solenoid valve te power range chu 4-20W a ni a, power-hun a rei lo hle. Chubakah, frequent power-on hian burnout hlauhawmna a siam bawk. Chuvangin, power supply hun rei tak emaw frequency sang takah emaw a mamawhna hmunah chuan pilot-operated solenoid valve chu duhthlanna duh ber a ni ta a ni. Dik tak chuan tunlai solenoid valve hman tlanglawn tam zawk hian pilot-operated design an hmang ta a ni. Liquid kal tlang theihna tur solenoid valve zingah hian direct-acting te hian proportion engemaw zat an la nei tho. Hei hi a chhan ber chu fluid chhunga bawlhhlawh awmte hian pilot valve channel tawi tak takte chu a tikhawlo thei a ni.
A dawtah chuan 3 of three{-position panga-way solenoid valves: middle-sealed, middle{3}}vented, leh medium-pressure te, chutiang bawkin an application te chu kan delve ang. Hetiang chi solenoid valve hian double electric control coil a hmang thin. Electromagnet pahnih zinga pakhat mah energized a nih loh chuan valve core chu a sir lehlamah springs balanced push hnuaiah middle position-ah a awm ang. Hetiang hunah hian solenoid valve-a gas path-a on- off state chuan a specific type - middle sealing, middle venting emaw medium pressure emaw a tichiang ang. Heng chi thum te principle leh application scenario te hi pakhat hnu pakhatin kan thlirho ang.
1.Analysis of the middle seal state: Coil pahnih zinga pakhat mah energized a nih loh chuan cylinder hmalam leh hnunglam chamber-a pressure chu coil-te de-energized hnuah state-ah a awm reng ang a, a danglam lo ang. Chutih rual chuan air intake leh exhaust port te pawh khar a ni bawk. Mahse, hun rei tak chhunga he dinhmun hi vawn reng hian zawi zawiin leak tenau vangin a balance a hloh phah thei a ni. Schematic diagram chu (Figure 10)-ah hian a lang a.
Gas compressibility leh pneumatic components cylinder, valve leh gas pipe joint te chu a leak vek thei lo-free a nih avangin cylinder chu intermediate stop position-ah rei tak stably-in a awm thei lo. He balanced state hi hun kal zelah a bo zauh zauh dawn a, chu chuan cylinder positioning accuracy a tihhniam phah dawn a ni. Mahse, cylinder positioning accuracy mamawhna sang tak nei lo leh stopover time a tawi deuhna hmuna hnathawh dan tur atan chuan middle-sealed cylinder hman tur ngaihtuah theih a la ni.
2. Medium Discharge Method: Coil pahnih zinga pakhat mah energized a nih loh chuan cylinder hma leh hnung chamber-ah pressure a awm lo va, air intake port chu a rualin khar a ni. Hetih lai hian cylinder hmalam leh hnunglam chamber-a pressure chu solenoid valve-a exhaust port pahnih hmangin a chhuak ang. A hnathawh dan tur chu Figure 11-ah hian tarlan theih a ni.
Middle-sealed valve nen khaikhin chuan middle-discharge circuit design hian mid-hun rei zawk a pe thei a ni. Cylinder chu vertical-a kal a ngaihna scenario-ah chuan mid-stop time hi a rei hle a, mahse positioning accuracy requirement erawh a khauh vak lo a, mid-release circuit hi ngaihtuah tur a ni.
3. Medium Pressure State: Coil pahnih zinga pakhat mah energized a nih loh chuan cylinder hma leh hnung chamber-a pressure chu coil hmasa de-enkawl a nih chuan state-ah a awm reng ang a, cylinder hmalam leh hnung lam chamber-a pressure chu intake end-a a inmil theih nan pressure chhunzawm zel a ni ang. Hetih lai hian exhaust khar laiin air intake chu a inhawng a. Working principle chu Figure 12-ah hian kan hmu a.
Cylinder chu axial external load force hnuaia awm a nih loh chuan piston chu balanced state-ah a awm reng ang a, chutiang chuan stroke laiin eng position-ah pawh chiang takin a awm ang. He circuit characteristics hian cylinder chu horizontal-a dah a ngai a ni. Chuvangin, working conditions-ah chuan high-precision positioning mamawhna leh axial external load force a awm loh chuan medium-pressure valve chu double piston rod cylinder nena hman dun a tha.
