Ing klasipikasyun ampo ing prinsipyu ning pamagobra ning valve limit switch

Ing klasipikasyun ampo ing prinsipyu ning pamagobra ning valve limit switch

Junio ​​12^th, 2023

TWS Valve ibat Tianjin, China

Key Words:Mechanical limit switch; Proximity limit switch

1. Mechanical limit switch

Keraklan, ing uri ning switch ayni magagamit ya para limitahan ing posisyun o stroke ning mekanikal a kimut, ba yang automatic a tuknang ing kimut a makinarya, magbaliktad kimut, magbayu bilis a kimut o automatic a makibalik a kimut agpang king metung a posisyun o stroke. Atin yang operating head, metung a contact system ampo metung a housing. Makapitna ya keng direct-action (button), rolling (rotary), micro-action ampo combination.

Direct-acting limit switch: ing action principle kalupa ne ning button, ing pamiyaliwa na ing metung manual ya, at ing metung makabangga ya keng bumper ning moving part. Potang ing impact block keng panlual a kikimut a bage pindutan ne ing buton para gumalaw ya ing contact, nung ing kikimut a bage mako ya, ing contact automatic yang mag reset lalam ning aksyon ning spring.

Rolling limit switch: Potang ing stop iron (collision block) ning makinang kikimut pindutan ne ing roller ning limit switch, ing transmission rod mag-rotate ya kayabe ning rotating shaft, para ing cam itulak ne ing impact block, at nung ing impact block miras ya keng metung a posisyun, itulak ne ing micro movement. Ing switch mabilis yang mag-operate. Potang milako ya ing stop iron keng roller, ing return spring i-reset ne ing travel switch. ini metung yang single-wheel automatic recovery limit switch. At ing two-wheel rotary type travel switch e ya malyaring mibawi automatic, at nung magdependi ya keng kikimut a makina para gumalaw ya keng kabilang direksyun, ing bakal a stopper makabangga ya keng aliwang roller para ibalik ya.

Ing micro switch metung yang snap switch a gagawan ning pressure. Ing kayang prinsipyu ning obra yapin ing ing panlual a mekanikal a pwersa kikimut ya keng action reed kapamilatan ning transmission element (pindutan me ing pin, button, lever, roller, atbp.), at kaybat ning enerhiya mitipun ya keng kritikal a punto, metung a instantaneous a aksyon ing mipalyari, inya ing kikimut a contact keng wakas ning action reed Ing punto ampo ing fixed contact mabilis lang miputut o miputut. Nung ing pwersa keng transmission element milako ya, ing action reed magproduce yang reverse action force, at nung ing reverse stroke ning transmission element miras ya keng kritikal a punto ning aksyon ning reed, ing reverse action mayari ya agad. Ing contact distance ning micro switch malati ya, ing action stroke makuyad ya, ing pressing force malati ya, ampo ing on-off mabilis ya. Ing bilis ning aksyon ning kayang kimut a contact ala yang kaugnayan keng bilis ning aksyon ning elementung transmission. Ing basic a uri ning micro switch yapin ing push pin type, na malyaring ibat keng button short stroke type, button large stroke type, button extra large stroke type, roller button type, reed roller type, lever roller type, short arm type, long arm type etc.

Ing mechanical valve limit switch keraklan gagamitan ne ing micro switch ning passive contact, at ing switch form malyari yang miyabe kareng: single pole double throw SPDT, single pole single throw SPST, double pole double throw DPDT.

2. Proximity limit switch

Ing proximity switch, a kilala ya naman bilang non-contact travel switch, e ya mu malyaring palitan ing travel switch keng contact para kumpletu ing travel control ampo limit proteksyun, nune gamitan ya naman para keng matas a pamagbilang, pamagsukad bilis, pamagkontrol keng lebel ning likidu, pamagsuri keng sukad ning bage, automatic a pamagkonekta kareng paralan ning pamagprosesu. Uling atin yang katangian a non-contact trigger, mabilis a bilis ning aksyon, aksyon kilub ning miyayaliwang distansya ning pamangilala, matatag at alang pulse a signal, matatag at mapanalig a obra, makabang bie, matas a repeat positioning accuracy at adaptability kareng masipit a kapaligiran ning obra, atbp., inya maralas yang gagamitan king industrial a produksyun antimo ing makina, textil, plastic printing.

Deng proximity switches makadake la agpang keng prinsipyung gagawan da: keraklan high-frequency oscillation type, Hall type, ultrasonic type, capacitive type, differential coil type, permanent magnet type, atbp. Permanent magnet type: Gagamitan ne ing suction force ning permanent magnet para i-drive ing reed switch para i-output ing signal.

Differential coil type: Gagamitan ne ing eddy current ampo ing pamagbayu ning magnetic field a mipalyari nung lalapit ya ing bage a akit, at mag-operate ya kapamilatan ning pamiyaliwa ning detection coil ampo ing comparison coil. Capacitive proximity switch: Iti metung yang capacitive oscillator ampo ing electronic circuit. Ing kayang capacitance atyu ya keng sensing interface. Potang lalapit ya ing metung a bage, mag-oscillate ya pauli ning pamagbayu ning kayang coupling capacitance value, inya sa’t mag-generate yang oscillation o tuknang ing oscillation para mika-output signal. dakal at dakal a pamagbayu. Hall proximity switch: Magobra ya kapamilatan ning pamagbayu kareng magnetic signals keng electrical signal output, at ing output na atin yang memory retention function. Ing internal magnetic sensitive device sensitive yamu keng magnetic field perpendicular keng wakas ning sensor. Nung ing magnetic pole S makayarap ya keng proximity switch, ing output ning proximity switch atin yang positibong luksu, at ing output matas ya. nung ing magnetic pole N makayarap ya keng proximity switch, ing output mababa ya. lebel.

Ultrasonic proximity switch: Iti keraklan bibilugan de reng piezoelectric ceramic sensors, electronic devices para king pamagtransmit kareng ultrasonic waves ampo pamanyambut kareng reflected waves, ampo program-controlled bridge switches para keng pamag-adjust keng detection range. Mayap ya iti para king pamangilala kareng bage a e malyaring o e malyaring atagkil. Ing kayang pamagkontrol e ya migaganaka kareng sangkan antimo ing siwala, kuryenti, ampo sala. Ing detection target malyari yang metung a bage keng solidu, likidu o pulbura, basta malyari yang magreflect kareng ultrasonic waves.

High-frequency oscillation proximity switch: Iti me-trigger ya keng metal, keraklan atin yang atlung bage: high-frequency oscillator, integrated circuit o transistor amplifier ampo output device. Ing kayang prinsipyu ning obra yapin: ing coil ning oscillator maggenerate yang alternating magnetic field keng active surface ning switch, nung ing metung a metal a bage lalapit ya keng active surface, ing eddy current a gagawan na kilub ning metal a bage sisipsip ne ing enerhiya ning oscillator, inya ing oscillator tuknang yang mag-vibrate. Deng adwang signal ning oscillation ampo vibration stop ning oscillator mibayu la keng binary switching signals kaybat dang me-shape ampo me-amplify, ampo deng switching control signals ila reng output.

Ing magnetic induction valve limit switch keraklan gagamitan ne ing electromagnetic induction proximity switch ning passive contact, at ing switch form malyari yang miyabe kareng: single pole double throw SPDT, single pole single throw SPSr, pero alang double pole double throw DPDT. Ing magnetic induction keraklan makadake ya keng 2-wire a normal a makabuklat o normal a makasara, at ing 3-wire kalupa ne ning single-pole double-throw SPDT, alang normal a makabuklat ampo normal a makasara.

Tianjin Tanggu Water-Seal Valve Co.,ltdespesyalista kengbalbula ning parul, Gate valve, Check valve, Y saringan, Balancing valve, ampo.