I. Bikpela wok bilong ol Solenoid Valv
Solenoid valv, olsem wanpela ki komponen bilong elektro-pneumatik konvesen, i solim wok bilong tanim gut ol lektrik signal i go long ol pneumatik signal i go long ol pneumatik signal{{1} Bihain long em i kisim kontrol instraksen, solenoid valv inap long rilisim stret, stopim OR senisim flow daireksen bilong kompresen ea, na em i winim planti wok, na tu, kontrol bilong eksen daireksen bilong eksen daireksen bilong en, ON/OF/OF i ken bosim, ON/OF/OF i kontrolim planti wok, na tu, kontrolim wok daireksen bilong eksen daireksen bilong en, ON/OF/OF. O/NO/AND lojik kontrol{{2}' Namel long ol kain kain solenoid valv, elektromagnetik kontrol daireksenel kontrol valv i holim wanpela as posisen na i mekim bikpela wok.
Ii. Wok Prinsipol bilong Elektromagnetik Kontrol Daireksen Kontrol Valve
Long ol pneumatik sistem, elektromagnetik kontrol daireksenel kontrol valv i save mekim wanpela bikpela wok. Em i risponsibel long kontrolim opening na klosing bilong ea flo senel o senisim flo daireksen bilong kompresen ea{{1} As wok prinsipel bilong em i dipen long elektromagnetik fos i kamap long elektromagnetik koil{2}} Dispela fos bai kirapim valv bilong revering koril{2}} Dispela fos bai kirapim valv bilong reverim as bilong revering koil{2}}’ Dispela strong bai kirapim valv bilong reverim as bilong revering koril{2}} Dispela strong bai kirapim valv bilong revering as bilong rivers long senis bilong elektromagnetik koil{2}}’ Dispela strong bai kirapim valv bilong revering as bilong senisim ol samting bilong reverim. airflow. According to the different ways in which the electromagnetic control part pushes the directional control valve, electromagnetic control directional control valves can be divided into two types: direct-acting and pilot-operated. Direct-acting solenoid valves directly use electromagnetic force to drive the valve core to reverse direction, while pilot-operated directional control valves rely on the pilot air pressure generated by the elektromagnetik pailot valv bilong draivim valv kor long winim riversing.
Figure 1 shows a simple cross-sectional view of a 3/2 (three-way two-position) direct-acting solenoid valve (normally open type) and its working principle. When the coil is energized, the static iron core will generate electromagnetic force, and this force will push the valve core to move upward. As the valve core rises, the gasket is lifted, thus connecting ports 1 na 2 taim ol i katim ol port 2 na 3. Long dispela taim, valv i stap long intake stet na i ken kontrolim muvmen bilong silinda. Taim pawa i katim pinis, valv kor bai dipen long restoring fos bilong spring long go bek long as stet bilong em, em, ol port 1 na 2 i gat ol port i kam bek long as stet bilong em, em, ol port 1 na 2 i stap olsem, ol port 1 na 2 i gat ol port na 3 em ol port 1 na 2 i gat ol port i kam bek long as stet bilong em, em, ol port 1 na 2 i stap olsem, ol ports 1 na 2 i gat 3-pela i konekt{18} i konekt{18} i konekt{18} Long dispela taim ol i konektim 3-pela na 2 ol i konekt long en taim ol port i kam bek long as stet bilong em, em, ol port 1 na 2 i gat 3-pela i konekt{18} i konekt{18} Long dispela taim ol i no gat wok long en. wei, valv i stap long eksos stet.
Figure 2 shows a simple cross-sectional view of the 5/2 (five-way two-position) direct-acting solenoid valve (normally open type) and its working principle. In the initial state, air intake occurs through ports 1 and 2, while exhaust is carried out through ports 4 and 5. When the coil is energized, the static iron core generates electromagnetic fos. Dispela strong bai kirapim pailot valv long wok, na bihain kompresen win bai go insait long pailot piston bilong valv long rot bilong win, na bai piston i stat. Long namel bilong piston, siling sekula pes i opim senel. Long dispela taim, win i kisim ol port 1 na 4}. Taim i kam aut long ports 1 na 4} 5 katim, pailot valv bai dipen long restoring fos bilong spring long go bek long as stet.
Next, let's talk about the function of the solenoid valve. The function of an electromagnetic valve is represented by two numbers: M and N, which is called an M-path N-position electromagnetic valve. Among them, "N position" represents the switching position of the directional control valve, that is, the state of the valve. The number of valve positions is the value of N. Olsem, wanpela valv i gat tupela posisen i gat tupela posisen opsen, em i olsem, em i gat tupela stet. tripela posisen valv i gat tripela posisen opsen, em i olsem, i gat tripela narapela narapela stet{{9} "M rot" i soim namba bilong ol ekstenel intafes bilong valv, inkludim ea inlet, ea autlet na eksos port{10} .
Tekem valv long Figa 1 olsem wan eksampol. Hem i wan 3/2 daerek-akting solenoid valv, we i minim se, valv i gat tu posisen, hemia "on" mo "off" stet. Long semtaem, hem i gat tri ea inlet, 2 i ea inlet, mo 3 i ea inlet, mo 3 i ea we i kamaot long ea, mo 3 i ea blong ea, mo 3 i ea we i kamaot long ea, mo 3 i gat eksos port{9}} .
Analisis bilong solenoid valv rot bilong win
Long lephan bilong ges rot daigram, mak long lephan tru i save makim daunbilo spring. Namel hap em valv bodi, we i gat ol ki infomesen bilong painimaut wanem kain solenoid valv{{1} Olsem, tupela bokis insait long piksa i soim olsem dispela em i wanpela tupela posisen solenoid valv, taim A/R/R/P/S . 5-wei valv. Olsem na dispela solenoid valv em i wanpela tupela posisen faiv-we solenoid valv. Wankain tu, yumi ken painimaut namba bilong ol bit na namba bilong ol pas bilong solenoid valv long namba bilong ol hul na namba bilong ol bokis i .
In addition, the gas path diagram also shows the gas path operation routes when power is off and when power is on. When power is cut off, the air path enters through hole P, acts on the actuator through hole A, then passes through hole B, and is finally discharged from Hole S, while Hole R remains closed. When powered on, the air path also enters from hole P, but at this time, air is discharged from hole B, acting on the aktueta na pas tru long hul A, na bihain ol i lusim hul R, taim Hol S i pas.
Raet pat blong Figa 3 jenerol i ripresentem ol koil o paelot smol valv, we i plei wan impoten rol long operesen blong solenoid valv. Taem yumi tanem ol eawei daegram ia, yumi save kasem wan dip andastaning long wok prinsipol blong solenoid valv mo operesen blong eawei anda long ol difren kondisen blong ol difren kondisen{2}}}
Piksa 4 i soim lektrik skematik piksa bilong pneumatik solenoid valv bilong valv bilong pneumatik solenoid (1}} Ilektrikel skematik daigram em i ki bilong kliagut long wok prinsipel bilong wanpela elektromagnetik valv{{2} Em i soim klia koil, kontek, na koneksen rilesensip wantaim ol narapela ilektrikel komponen bilong solenoid valv taim em i kisim pawa long en na i go daun, na long dispela rot em i kisim gutpela wok bilong em bilong wok bilong em .
Iv. Seleksen bilong Singel-Kontrol Solenoid Valv na Dabol-Kontrol Solenoid Valv
Singel valv bilong solenoid, olsem nem bilong en i tok, i gat wanpela koil tasol bilong wanpela koil. Taim ol i givim pawa long em, em bai senis na go insait long narapela stet. Taim pawa i katim, em bai go bek otomatik long namba wan stet{{2} Dispela wok prinsip i gat tupela koil long en i gat tupela koil long en, em i stap insait long en, em i gat tupela samting i stap insait long en. ol narapela narapela koil, em i ken winim planti swit na holim strong yet stet bilong em bipo bihain long pawa-off, olsem i stap long piksa 6. Dispela fanksenel difrens i makim stret ol narapela narapela mak bilong ol long ol praktikel aplikesen.
Ol piksa 5 na 6 i soim ol wok as tingting bilong ol singel-kontrol solenoid valv na dabol-kontrol solenoid valv. Taim yu mekim wanpela seleksen, sapos taim bilong senisim valv i go bek i sotpela tru, wanpela solenoid valv i gat wanpela kontrol . pawa-on na iven paia i go aut. Bilong abrusim dispela situesen, wanpela dabol-kontrol valv i ken kisim. Antap long dispela, sapos reset fanksen i mas kamap bihain long pawa i no wok gut, wanpela solenoid valv i kontrolim tasol i gutpela moa. Sapos em i mas holim strong stet bihain long pawa i no wok gut, wanpela dabol-kontrol solenoid valv i gutpela moa long pawa i no wok gut, wanpela dabol-kontrol solenoid valv i gutpela moa long pawa i no wok gut, wanpela dabol-kontrol solenoid valv i gutpela moa long pawa, wanpela dabol-kontrol solenoid valv em i gutpela moa long pawa i no wok gut, wanpela dabol-kontrol solenoid valv em i gutpela moa long pawa i no inap kamap, wanpela dabol-kontrol solenoid valv i gutpela moa long pawa i no inap kamap.
V. Ol Difrens mo Ol Aplikesen bitwin ol Solenoid Valv blong Solenoid we Pailot i wok long hem mo Solenoid Valv blong Daek-ekting
Namel long ol kain solenoid valv, pailot-operet na dairek-ekting em tupela komon taip. Ol i narapela narapela long ol wok prinsipel na aplikesen senario. Pilot-operet solenoid valv i swit namel long ges na wara i go insait long ol pailot hul, na dairek-ekting solenoid valv i save dipen long ol presa i narapela narapela long kontrolim muvmen bilong valv kor{6}} Dispela i mekim tupela kain i narapela kain long kontrolim muvmen bilong valv core{6}} . ol gutpela samting taim ol i bekim ol narapela narapela indastrial diman. Olsem, long sampela situesen we i nidim hariap bekim na bikpela sensitiviti, ol dairekt-ekting solenoid valv i ken gutpela moa. Long ol situesen we ol i nidim gutpela kontrol na daunim eneji konsumsen, pailot-operet solenoid valv i ken i gat wanpela ed.}
Straksel disain bilong ol dairekt-ekting solenoid valv em i simpol tru{{1} Wok bilong ol long wok i dipen moa yet long ilektromagnetik fos long draivim valv kor long act. Tasol, dispela disain tu i gat tupela bikpela sot i save mekim . solenoid valves are relatively sensitive to pressure. When the pressure exceeds a certain limit (usually over 0.7MPA), many direct-acting solenoid valves cannot function properly. This is mainly due to the excessively high pressure acting on the valve core, making it difficult for the electromagnetic force to drive the valve core to operate. Despite this, direct-acting solenoid ol valv i gat ol gutpela samting bilong ol tu: isipela straksa, prais i no gutpela tumas na mak bilong feil i daunbilo.
2. Ol i save wokim solenoid valv i gat wok pailot long gutpela tingting bilong . Em i lusim pasin bilong mekim wok bilong elektromagnetik fos draiv na long ples bilong en i yusim presa bilong win long kirapim valv bilong valv bilong mekim wok bilong act. Long ol solenoid valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i winim 4mm, ol i save kamapim wanpela pailot valv na wanpela bikpela valv i gat pawa long en. valv bai opim na kontrolim opening bilong bikpela valv long rot bilong autput signal bilong en{{6} Em i gutpela long luksave olsem bikpela valv em i trupela pneumatik kontrol valv, na operesen bilong em i nidim kodineted eksen bilong tupela ea sos: wanpela em i nambawan valv ea sos, na narapela em pailot valv ea sos i .
If the main air source supplies air to the pilot valve through the internal air passage of the solenoid valve, this design is called an internal pilot type. If the pilot valve is supplied with gas from a source independent of the main gas source, it is called an external pilot type. In Figure 8, the left side shows an example of an external pilot-operated solenoid valve, while the right side shows an example of an internal pilot-operated solenoid valv.
Ol i soim fisikel skelim namel long intanel lid na ekstenel lid i stap long dispela piksa i kam bihain (0}}
Dispela tupela kain solenoid valv, em intanel pailot na ausait pailot, planti taim i save stap wantaim long wankain sistem. Planti taim, intanel pailot inap long inapim ol nid bilong planti taim{1}} Tasol long sampela spesifik situesen, ekstenel lidasip i kamap moa yet i mas i gat . Olsem, taim ges sos presa bilong bikpela valv i save senis na i ken go daun long 0{4}MPA, o taim em i stap long wanpela vakum envairomen, o taim ges sos presa bilong bikpela valv i save senis na em i ken go daun long 0{4}MPA, o taim em i go daun long 0{4}MPA, o taim em i go daun long 0{4}MPA, o taim em i go daun long 0{4}MPA, o taim em i stap long wanpela vakum." gas source of the pilot valve cannot be shared with that of the main valve, otherwise it may lead to the main valve being unable to open. At this point, an independent air source with a pressure exceeding 0.2MPA is required to power the pilot valve. In addition, when the pressure difference between the air inlet and outlet is significant, or when the main airway pressure exceeds 1MPA, the internal pilot may need to increase the structural volume long rot bilong putim presa bilong rot bilong win i go stret long as bilong valv. Pailot bilong ausait i save stretim dispela hevi long rot bilong kamapim stret wanpela ges senel i go insait long pailot port na i no gat wok long putim wanpela elektromagnetik valv; i mas putim wanpela paip bilong win tasol.
In conclusion, pilot-operated solenoid valves have the advantages of small electromagnetic heads and low power consumption. It is aesthetically pleasing and saves installation space. Meanwhile, it generates less heat and has a remarkable energy-saving effect. More importantly, due to the low heat generation, the coil is less likely to burn out and can be powered on for a long time. This is particularly impoten long ol praktikel aplikesen. Olsem, pawa bilong sampela solenoid valv i kam long SMC i bin go daun olsem 0{{8}1W, na dispela i mekim pawa saplai i go het i no gat ovaheting. Pawa rein bilong dairek-akting solenoid valv em4-20W, wantaim wanpela liklik pawa-on taim bilong paia bilong {10}… Therefore, in situations where power supply for long periods or at high frequencies is required, pilot-operated solenoid valves become the preferred choice. In fact, most of the commonly used solenoid valves nowadays have adopted pilot-operated design. Among the solenoid valves that only allow liquid to pass through, direct-acting ones still account for a certain proportion. This is mainly due to the i tru se ol doti long wota i save blokem ol smol rod blong valv blong paelot valv.
Next, we will delve into the three types of three-position five-way solenoid valves: middle-sealed, middle-vented, and medium-pressure, as well as their applications. This type of solenoid valve uses double electric control coils. When neither of the two electromagnets is energized, the valve core will be in the middle position under the balanced push of the springs on both ol sait. Long dispela taim, on-off stet bilong ges rot long solenoid valv bai makim spesifik taip - namel siling, namel venting o namel presa. Mipela bai skelim ol as tingting na aplikesen senario bilong ol dispela tripela kain wan wan wanpela.
1.}Analisis bilong namel sil stet: Taim tupela koil i gat strong, presa long fran na baksait rum bilong silinda bai stap yet long stet bihain long ol koil i no kisim strong na bai ol i no inap senisim i liklik namba., tupela i ken lusim dispela stet inap long taim bilong wanpela longpela taim, na dispela i ken mekim dispela stet i lus long wanpela longpela taim, em inap long lus long wanpela longpela taim, em inap long lus long wanpela longpela taim. lik. Skematik daigram i stap long (Piksa 10).
Bikos long kompresibiliti bilong ges na tru olsem ol pneumatik komponen olsem ol silinda, ol valv na ol ges paip join i no inap stap fri olgeta, silinda i no inap stap gut long silinda long namel stop posisen inap longpela taim{{1} Dispela balens stet bai lus isi isi long taim, na dispela i kamapim wanpela go daun long posisen akuresin bilong posisen eksaitesen we posisen i stap stret long posisen bilong silinda i stap long ples we posisen bilong posisen i stret long posisen bilong cylinder{2}},” dispela i mekim na ol i no inap long go daun long posisen bilong posisen, na dispela i mekim ol i go daun long posisen bilong posisen, na dispela i mekim na ol i no inap long wok gut. i no gat bikpela askim na taim bilong stop i sotpela tru, ol i ken tingim yet dispela silinda i gat namel silim bilong yusim.
2. Mediam discharge metod: Taim nogat wan bilong ol tu coil em no lanim energi, nogat presha i stap long front na rear kamber bilong cilinder, na air intake port i stap klos long sem taim. Long dispela taim, presha long front na rear kamber bilong cilinder bai discharge through ol tu exhaust ports bilong solenoid valve. Wokim principle bilong em can be referred to long Figure 11.
Komperem wantaim valv i gat namel-sial, namel-dischaj seket disain i ken givim longpela taim bilong stop namel-stop taim. Long ol senario we silinda i mas muv vertikal, taim bilong mid-stop i longpela tru, tasol posisen akuresi rikwaemen i no strong tumas, mid-rilis seket em i wanpela jois i gutpela long tingim bilong tingim{6}}}
3. Medium presa stet: Taim tupela koil i gat strong, presa long fran na baksait rum bilong silinda bai stap yet long stet taim koil bilong bipo i no gat strong, na presa i go het bai kamap long lukim olsem presa long fran na baksait rum bilong silinda i stap wankain wantaim dispela long intake entatek bilong dispela silinda i stap wankain wantaim dispela long intake entatek bilong dispela silinda i stap wankain wantaim dispela long intake entatek.} long taim bilong silinda i stap wankain wantaim dispela long intake entatek bilong silinda i stap long mak bilong intake entak entek. klostu. As tingting bilong wok i stap long piksa 12.
If the cylinder is not subjected to an axial external load force, the piston will remain in a balanced state and thus precisely stay at any position during the stroke. The characteristics of this circuit require that the cylinder must be installed horizontally. Therefore, in working conditions where high-precision positioning is required and there is no axial external load force, it is recommended to use a medium-pressure valve in combination with a double piston stik silinda.
