{"id":12996,"date":"2021-08-18T01:37:39","date_gmt":"2021-08-18T01:37:39","guid":{"rendered":"https:\/\/hqeialdi5a.wpdns.site\/?p=12996"},"modified":"2024-01-31T01:56:13","modified_gmt":"2024-01-31T01:56:13","slug":"7-best-questions-about-directional-control-valve","status":"publish","type":"post","link":"https:\/\/www.yaiwo.com\/de\/7-best-questions-about-directional-control-valve\/","title":{"rendered":"7 Best Questions About Directional Control Valve"},"content":{"rendered":"

<\/span>Gesch\u00e4tzte Lesezeit: <\/span>21<\/span> Minute<\/span><\/p>\n\n\n\n

Frage 1: Die Spezifikation des Wegeventils des Hydrauliksystems des Rohraufweiters<\/strong><\/h3>\n\n\n\n

Figure 1-1 shows the hydraulic system of a 600-ton pipe expander used in a factory. It can realize the action cycle of vertical cylinder fast down, sealing control\u00a0cylinders on both sides synchronously fast forward, mold sealing one vertical, side cylinder pressurization-two cylinders synchronously rewind the mold opening and the vertical cylinder quickly retreats the mold opening action cycle. Directional Control Valve<\/p>\n\n\n\n

\"Directional

Abbildung 1-1 Das Hydrauliksystem eines 600-Tonnen-Rohraufweiters<\/figcaption><\/figure>\n\n\n\n

When the solenoid 2DT is energized, the electromagnetic directional valve 10 is switched to the left position, and the hydraulic pump 1\u2014the left position of the electro-hydraulic directional valve 8\u2014the left position of the valve 10\u2014the double hydraulic control check valve 13\u2014the rodless cavity of the vertical cylinder 19, The vertical cylinder 19 quickly descends and seals the mold. Directional Control Valve<\/p>\n\n\n\n

Wenn der Formsiegeldruck den spezifizierten Wert erreicht, gibt das elektrische Kontaktmanometer 14 ein Signal aus, der Magnet 2DT wird abgeschaltet, 1DT, 5DT, 6DT werden erregt und das Hydraulik\u00f6l flie\u00dft durch das Ventil 8 nach rechts und die Mischventil 9 \u2013 das elektromagnetische Umschaltventil 11 nach rechts \u2013 Die linke Position des elektromagnetischen Umschaltventils 12 \u2013 die doppelte hydraulische Steuerkontrolle Ventile<\/a> 16 and 18 enter the rodless chambers of the side cylinders 20 and 21 respectively, and the cylinders on both sides fast forward and seal the mold synchronously. Directional Control Valve<\/p>\n\n\n\n

Wenn der Formdichtungsdruck den spezifizierten Wert erreicht, sendet das elektrische Kontaktmanometer 17 ein Signal, der Ultrahochdruck-Hydraulikdruck 15 und 2~\/ bewegen sich gleichzeitig r\u00fcckw\u00e4rts und spritzen jeweils Hochdruck\u00f6l in den kolbenstangenlosen Hohlraum des vertikalen Zylinders 19 und der Seitenzylinder 20 und 21, um eine Ausgangspresskraft von 6 MN (600 tf) zu erreichen.<\/p>\n\n\n\n

When the electromagnets 1DT, 4DT, 7DT are energized, the cylinders on both sides will retreat and open the mold synchronously. When the end of the stroke is reached, the stroke will open and a signal will be sent. The electromagnet 1DT is de-energized and the 3DT is energized, and the vertical cylinder quickly moves upward to open the mold. Directional Control Valve<\/p>\n\n\n\n

In order to improve work efficiency and reduce power consumption, the system adopts pressure compensation variable axial piston pump 1 to achieve low-pressure and high-speed operation of vertical cylinders and side cylinders, and high-pressure and low-speed operation during mold sealing. The specifications of the three hydraulic cylinders are the same. Directional Control Valve<\/p>\n\n\n\n

\"Abbildung

Abbildung 1-2<\/figcaption><\/figure>\n\n\n\n

The vertical cylinder and the side cylinder move slowly. The vertical cylinder moves down quickly for 70 seconds, and the side cylinder moves forward quickly for 60 seconds. The return time is longer, resulting in extremely low production efficiency. Directional Control Valve<\/p>\n\n\n\n

It can be seen from the working principle of the system that the vertical cylinder’s rapid downward movement and the side cylinder’s rapid forward movement are performed independently. A hydraulic source provides flow, and its\u00a0operating speed is determined by the output flow of the hydraulic pump 1. When the vertical cylinder and the side cylinder are running quickly, because there is no load, the working pressure of the system is very low at this time and the pressure compensation variable hydraulische Pumpe<\/a> outputs at full flow. Directional Control Valve<\/p>\n\n\n\n

Der Hydraulikzylinder bewegt sich langsam und die Laufzeit ist zu lang, was darauf hindeutet, dass der tats\u00e4chliche Durchfluss in den hydraulischer Zylinder<\/a> es ist zu klein. Dies kann die folgenden zwei Situationen haben:<\/p>\n\n\n\n