Directional Control Valve
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- Опубліковано 27 сер 2024
- Directional control Valve
In this video, I explained the Symbol Used in Hydraulic system (Directional Control Valve)
Symbol of directional control valve
symbol of method of position control it's construction and working
directional control valve is a fundamental component in hydraulic and pneumatic systems, responsible for controlling the direction of fluid or air flow within the system. It allows the operator to direct the flow of hydraulic fluid or compressed air to various actuators, such as cylinders or hydraulic motors, enabling precise control over the movement of machinery, equipment, or vehicles.
Key Components and Functions:
Valve Body: The main housing of the directional control valve, containing passages and channels for fluid or air flow.
Ports: Inlet and outlet ports where fluid or air enters and exits the valve. These ports are connected to hydraulic or pneumatic lines within the system.
Spool or Poppet: The moving element inside the valve that controls the flow direction. Spools are cylindrical or cylindrical with various configurations of lands and grooves, while poppets are typically spherical or conical.
Actuating Mechanism: The mechanism responsible for moving the spool or poppet within the valve body. This can be manual, such as a lever or knob, or automatic, such as solenoid or pilot-operated.
Positioning Features: Indicators or detents that show the position of the valve and help the operator select the desired flow direction.
Operation:
Neutral Position: In the neutral position, the spool or poppet blocks the flow of fluid or air through the valve, preventing movement of actuators connected to the valve ports.
Directional Control: By actuating the valve, either manually or automatically, the spool or poppet is moved to align with specific passages within the valve body, allowing fluid or air to flow in the desired direction.
Flow Control: Directional control valves may also include features for flow control, such as adjustable orifices or proportional control, enabling the operator to regulate the speed and intensity of actuator movement.
Types of Directional Control Valves:
2-Way Valve: Controls flow in one direction, typically used for on/off control.
3-Way Valve: Controls flow between two ports, often used for directional control or to divert flow.
4-Way Valve: Controls flow between two pairs of ports, commonly used for directional control in double-acting cylinder applications.
Applications:
Directional control valves are used in a wide range of industries and applications, including manufacturing, agriculture, construction, transportation, and aerospace. They are essential for controlling the movement of hydraulic cylinders, pneumatic actuators, hydraulic motors, and other devices in machinery and equipment.
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Name - Jayprakash Prasad
From - Maharashtra ( India )
UA-cam Channel ( JP HYDRAULIC CIRCUIT) - / @jphydrauliccircuit
U r amazing sir
Thank you 🙏 share this video with your friends
Nice❤
Thank you
Please explain servo and proportional valve
Ok brother
Sir haydrolic pump ke bare me video baney
Pump ki video bhi banaye bhut jld
Sir excavator mein kaun sa use hota hai
Excavator me Pilot operated directional control Valve lga hota he
Hi bro, can you please explain about A4VG series variable pump.
Brother If more comments come about this pump then we will make a video on this pump too
Abhi ke liye me is pump ki sari details de rha hu ise dekh skte ho
Rexroth Axial Piston Variable Pump A4VG
Description
Rexroth A4VG piston pump is a swash plate axial piston variable displacement pump. This type of pump is suitable for static hydraulic transmission closed circuits, with flow rate proportional to driving speed and displacement, and can be continuously variable. It is driven in both directions and can be connected in series with an auxiliary pump. The A4VG series pump is a commonly used pump in static hydraulic transmission, with a complex structure and integration of multiple hydraulic control valves to avoid overloading. Different control methods can be configured according to customer needs, with high automation and the ability to achieve remote control operation. As a power component of the static hydraulic transmission closed system, it is the first choice plunger pump for construction and maintenance machinery, port machinery, and concrete pumping machines in the world today. HEASH supply Rexroth piston pump A4VG series as A4VG 28, A4VG 40, A4VG 56, A4VG 71, A4VG 90, A4VG 110, A4VG 125, A4VG 140, A4VG 145, A4VG 175, A4VG 180, A4VG 250, A4VG 280...
Rexroth Pump A4VG series 32 Features
- High pressure pump for applications in closed circuits
- Size 28 … 125, such as A4VG 28 NVD**/32R, A4VG 40 HD3D**/32R, A4VG 56 HWD**/32R, A4VG 71 DA1D**/32R, A4VG 90 EZ1D**/32R, A4VG 125 EP4D**/32R.
- Nominal pressure 400 bar
- Maximum pressure 450 bar
Rexroth Pump A4VG series 40 Features
- High pressure pump for applications in closed circuits up to 500 bar
- Size 110 … 280, A4VG 110 DA**/40R, A4VG 125 HW**/40R, A4VG 145 EP**/40R, A4VG 175 EZ1**/40R, A4VG 210 EZ2**/40R, A4VG 280 EP4**/40R.
- Nominal pressure 450 bar
- Maximum pressure 500 bar
Rexroth Pump A4VTG series 33 Features
- High pressure pump for the drum drive in mobile concrete mixers
- Size 71 … 90, such as A4VTG 071 EP3**/33R, A4VTG 090 EP4**/33R.
- Nominal pressure 400 bar
- Maximum pressure 450 bar
- Closed circuit
How does the A4VG pump work?
For the axial piston pump, regarding its working principle, we can think of it as several syringes working at the same time. Each plunger and the cylinder cooperate to form a syringe. The number of syringes depends on the number of plungers. . At the same time, these "syringes" have oil pressure and pressure. The working principle of the A4VG pump is also the same, but as a closed variable displacement piston pump, its swash plate can cross the zero position to achieve the change of the flow direction, which is a bit complicated to implement.
- The charge pump supplies the control oil. The control valve controls the displacement of the variable piston. The variable piston drives the swash plate to change the swing angle to achieve the change of the pump displacement.
- The displacement of the pump is proportional to the difference in the control oil pressure between the two pistons of the variable piston;
- Control oil size and control signals, such as electricity, liquid, and manual signals;
- The shut-off valve on the pump limits the pressure at which the pump operates;
- Safety valve on the pump to achieve system safety protection;
Control form of Rexroth A4VG pump
According to the different forms of control valves on the pump, A4VG pumps have multiple control forms. The following are common control methods:
-HW manual control: The pump displacement changes proportionally to the angle of the control valve handle.
-EP proportional control: The pump displacement changes proportionally to the current signal of the proportional solenoid.
-HD hydraulic control form: hydraulic pilot control, where the pump displacement changes proportionally to the pilot pressure.
The A4VG pump is mainly used for closed loop hydrostatic transmission, with a complex structure and multiple hydraulic control valves. Different control methods can be configured according to the actual needs of end users, with a high degree of automation and the ability to achieve remote control. As a power component of a static hydraulic transmission closed system, A4VG is currently the preferred plunger pump for construction and maintenance machinery, port machinery, and more in various regions.
Application of Rexroth A4VG on Hydraulic System.
The A4VG pump is mainly used for closed circuit hydrostatic transmissions and has a complex structure with a variety of hydraulic control valves. Different control methods can be configured according to the actual needs of the end user, with a high degree of automation and remote control. As a power element of the hydrostatic transmission system, A4VG is the preferred plunger pump for building maintenance machinery and port machinery.
1. Hydraulic driving system for construction machinery, such as hydraulic system for pavers, hydraulic walking system for full-hydraulic vibratory roller, walking system for full-hydraulic corn harvester, walking system for coal support carrier truck, traveling system for beam transporter
2. The hydraulic driving system for special vehicles, such as the traveling system of aircraft tractors, the walking system of high-speed rail grinding cars, etc.;
3. The rotary hydraulic system of construction machinery vehicles, the rotary hydraulic system of mining excavators, the rotary hydraulic system of cranes, etc.
4. Hydraulic systems for construction machinery vehicles, such as excavators, graders, bulldozers, pumping hydraulic systems for concrete pump trucks, loaders, dock cranes, modular pallet trucks, etc.
Sir pilot operated aur solonied operated me deffrence kya hai
Pilot operated directional control Valve me hum Directional control Valve ko operate ya chalne ke liye hum liquid ya gas ka istemal karte Hain jesa ki is video me hum hydraulic oil ka use kr rhe he
Or Solenoid operated directional control Valve me hum Directional control Valve ko operate ya chalne ke liye electric supply ka use krte he jo ki 24V DC /110 V AC ya 230 V AC ka supply dete he.
pilot operated directional control Valve chalega liquid ya gas se or Solenoid operated directional control Valve chalega AC ya DC supply se.
Pilot operated matlab manually
Solonoid matlab electric ya systematic se
Sehi hain Keya?
@@jamalvaigamer1319pilot operated matalab jaruri nhi he ki wo manually hi operated ho
@@jamalvaigamer1319 Pilot operated" typically refers to a system or device that uses a smaller control mechanism (the pilot) to operate a larger mechanism or system. In various engineering and technical contexts, this term can apply to valves, switches, regulators, or other types of equipment.
For example, in a pilot operated valve, a smaller valve (the pilot valve) controls the flow or pressure of a larger valve (the main valve). The pilot valve can be used to adjust the opening and closing of the main valve based on specific conditions or signals it receives.
@@jamalvaigamer1319 Mera solenoid Control Pilot Operated directional control Valve wala video dekhoge to ye clear ho jayega
Sir can you explain my plant OPU SYSTEM I will give you diagram
Brother I don't understand pou system can you please explain
share the pdf
Sorry brother i don't have any PDF