MindMap Gallery Hydraulic control components
Hydraulic control element, hydraulic valve is a control element in the hydraulic system that controls the flow direction, pressure level, and flow rate of the liquid; the directional control valve can control the direction of the liquid flow, thereby changing the movement direction of the actuator.
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This is a mind map about bacteria, and its main contents include: overview, morphology, types, structure, reproduction, distribution, application, and expansion. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about plant asexual reproduction, and its main contents include: concept, spore reproduction, vegetative reproduction, tissue culture, and buds. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about the reproductive development of animals, and its main contents include: insects, frogs, birds, sexual reproduction, and asexual reproduction. The summary is comprehensive and meticulous, suitable as review materials.
Hydraulic control components
Overview
Hydraulic press function
Hydraulic valve is a control component in the hydraulic system that controls the flow direction, pressure level, and flow rate of the liquid.
Hydraulic press classification
According to use
Pressure control valve Flow control valve Directional control valve
Operation mode points
Manually operated valve Mechanically operated valve Electrically operated valve
Connection method points
Tubular connection Format and stacked connection Plug-in connection
According to structure
Slide valve Seat valve Jet tube valve
Press control mode
Electro-hydraulic proportional valve Servo valve Digital control valve
Classified by output parameter adjustability
On/off control valve, valve with adjustable output parameters
Basic requirements for valves in hydraulic systems
1Reliable work, sensitive action, small impact and vibration
2. Small pressure loss
3. Compact structure, easy to install, maintain, adjust and use, and has good versatility.
Directional control valve
effect
Control the direction of fluid flow to change the movement direction of the actuator
Classification
One-way valve
Ordinary one-way valve
structure
Valve body, valve core, spring, etc.
effect
Only one hydraulic flow is required, and the reverse direction is blocked.
Require
Small forward flow resistance, no reverse flow, good sealing Opening pressure: 0.03~0.05MPa
Hydraulic control check valve
composition
Botong one-way cylinder small piston cylinder
Features
a When there is no control oil, it is the same as the ordinary one-way valve.
The b-pass control oil can be passed in both forward and reverse directions.
Directional valve
structure
Manual reversing valve
Motorized reversing valve
Solenoid directional valve
flow reversing valve
Electro-hydraulic reversing valve
Performance and features
The neutral function of the slide valve
Hydraulic power of slide valve
Hydraulic jamming phenomenon
pressure control valve
Classification
By use
relief valve
Hydraulic system performance requirements for relief valves
High constant pressure accuracy
Sensitivity should be high
Work should be smooth and free of vibration and noise
The seal should be good and the leakage should be small when the valve is closed.
structure
Direct acting relief valve
Pilot operated relief valve
performance
static performance
Pressure control range
Opening and closing characteristics
Unloading pressure
dynamic performance
Pressure reducing valve
sequence valve
Balance valve
Unloading valve
Press the spool
slide valve
ball valve
poppet valve
According to working principle
Direct acting
Pilot type
flow control valve
Throttle valve orifice
Thin-walled holes
elongated holes
Thick walled holes
Ordinary throttle valve
structure
Axial triangular groove type
form
needle orifice
Triangular slot orifice
Rotary orifice
Throttle valve pressure compensation
1 A speed regulating valve is formed by connecting a fixed difference pressure reducing valve and a throttle valve in series.
Combine the pressure stabilizing relief valve and the throttle valve in parallel to form a relief throttle valve
Stacked hydraulic valve
Features
The hydraulic system composed of stacked valves has a compact structure, small volume and mass.
The superimposed valve hydraulic system is easy to install and has a short assembly cycle.
If the hydraulic system changes, the working conditions change, and components need to be added or removed, assembly is easy and quick.
Pipeless connection between components eliminates leakage and vibration caused by oil pipes, pipe joints, etc. ,noise
The entire system is flexible in configuration, neat in appearance, and easy to maintain.
Standardized, universal, and highly integrated
Superimposed speed regulating valve
Stacked relief valve
Two-way cartridge valve
Functional components
Cartridge directional valve functional components
Cartridge pressure valve
Cartridge flow valve
Features
Simple structure, large flow rate, the maximum flow rate can reach 10000L/min
Good sealing, small leakage, small pilot stage function and obvious energy saving
Easy to integrate into ductless connections and easy to standardize
Widely used in large-flow hydraulic systems such as metallurgy, ships, presses, and shaping.
Hydraulic press connection
Pipe connection
Plate connection
Integrated