Size 10 of the commonly used combination pads for hydraulic stations

Combination gasket (combination gasket) is made of rubber ring and metal ring integrally bonded and vulcanized, is used to seal the sealing ring of thread and flange connection, the ring includes a metal ring and a rubber gasket. The metal ring is treated with anti-rust, and the rubber ring is generally made of oil-resistant nitrile rubber or fluororubber. There are two sizes of combination mats, metric and imperial, and there is a combination of metal pad and rubber of standard JB982-77 for combination pads.

The combination washer is used for threaded pipe joints and screw plug sealing, it is generally used with ferrule pipe joints to plug the oil port, mainly used for the end face static sealing of the threaded connection of the hydraulic valve pipe joint, and is suitable for the end face static sealing of the British and American standard British threads and the French and German standard metric thread connections. Composite washers can be divided into type A and type B according to the structural form; According to the different lagging can be divided into full package and half pack.

Combination pads are widely used in oil-based piping systems for welding, ferrules, enlarged pipe joints, plugs and end face static sealing of pressure systems of mechanical devices.

Second, the structure size and parameters of the combination pad combination pad.

The schematic diagram is as follows:

Schematic diagram of the construction of the combination pad.

Combination pad, d = 8 means the nominal diameter is 8mm. Permissible Diameter Tolerance: . The working pressure is 400kg cm2 (, and the working temperature is between -25-80.

The schematic diagram of the application of the combination pad is as follows:

15 20 25 32.

The dimensions are the inner diameter of the combined gasket.

Unit: mm. The commonly used ones are 16 18 22 27 32 36

The correct solution relies on two things working together, and the metal inside squeezes the rubber on the outside to play a sealing role.

Different sealing forms are used according to different working conditions. O-ring, Y-ring, V-ring sealing is more common, combination gasket is mainly used in joints, plug sealing, as well as felt rings, U-rings as long as the hydraulic cylinder piston or piston rod sealing. The ring is a combination seal, which is used where it needs to be sealed and wear-resistant.

There are also metal sealing rings, the most common being copper gaskets, and the sealing pressure should not be too high. There are many kinds of other seals, and we can use them again when you actually use them.

There are o-rings. V-rings, Y-shapes, that's all that is commonly used

Combination gasket, PTFE plus copper.

All parts and components in the assembly drawing must be written serial number, a component in the assembly drawing can only write a serial number, the same component in the same assembly drawing should write the same serial number, the serial number of the parts in the assembly drawing should be consistent with the serial number in the parts list table, and secondly, the maximum size of the shape and the working size should be marked, and the moving parts should be matched with clearance.

This pressure is very low, the requirements for the spatting are not high, and it can be purchased from any of the distribution points of the air liquide digging and pressing components.

If the pressure of selling drupes is relatively high, you can find a better dealer, this component will generally not have any problems, and the quality requirements are not so high.

Maximum working oil pressure = maximum flow rate: = 9l min

The first oil pressure value of the first stage during the second stage braking: the first stage is 0 4MPa adjustable.

Operating oil temperature: 15-60°C

Fuel tank storage capacity: 500L

The second stage brake delay time is dispersed: 110s

The maximum allowable input current of electro-hydraulic pressure regulating punch shirt is 250mA hydraulic oil grade: No. 22 turbine oil.

Knowing the model of the check valve can not determine the size of the oil port, knowing the size of the oil port and the size of the combination pad can not be determined.

The hydraulic station is composed of a pump device, an integrated block or a valve combination, an oil tank, and an electrical box, and the functions of each component are as follows:

Pump device - equipped with motor and oil pump, it is the power source of the hydraulic station, converting the mechanical energy into the power energy of the hydraulic oil.

Manifolds are composed of hydraulic valves and channel bodies. It regulates the direction, pressure and flow rate of the hydraulic oil.

Valve combination - the plate valve is mounted on the vertical plate, and the plate back pipe is connected, which has the same function as the manifold.

The oil tank is a semi-closed container welded with steel plates, which is also equipped with an oil filter screen, air filter, etc., which is used for oil storage, oil cooling and filtration.

Electrical box - divided into two forms: a terminal board with external leads; One is equipped with a full set of control appliances. Electric motors, gear pumps – provide the driving force for the hydraulic system.

Solenoid reversing valve - controls the direction of hydraulic oil flow and changes the direction of movement of the cylinder.

Solenoid relief valve - to prevent the overpressure of the entire hydraulic system, which is equivalent to a safety valve, to protect the safety of the oil pump and the oil circuit system and keep the pressure of the hydraulic system constant.

Pressure reducing valve - by adjusting the pressure reducing valve, it can meet the requirements of different working mechanisms that need different working pressures, so that the secondary oil pressure is lower than the primary oil pressure.

Speed control valve - throttle speed regulation of the oil circuit, which can change the working speed of the hydraulic cylinder of the actuator.

Hydraulic Oil Filter – There are two oil filter ports inside the hydraulic unit. One is installed at the suction port of the gear pump to avoid sucking in impurities such as particles in the hydraulic oil of the oil tank. The other is installed on the hydraulic oil delivery pipeline of the system to remove impurities in the hydraulic oil, and at the same time, it can also remove the gum, asphaltene, carbonized particles, etc. produced by the chemical changes of the hydraulic oil itself.

In this way, it can prevent the valve core from jamming, damping hole blockage and other failures. The pipeline system is equipped with a differential pressure alarm device, and when the filter element is blocked, a telecommunication signal is issued, and the filter element should be cleaned or replaced.

Pressure gauge - used to display the working pressure of the hydraulic station, so as to facilitate the operator to control the oil pressure.

Air filter - installed on the fuel tank, it has a triple role, one is to prevent the pollutants in the air from entering the fuel tank; the second is to play the role of ventilation to avoid the phenomenon of air absorption of the oil pump; The third is to double as a hydraulic oil replenishment port.

Oil Level Gauge – Mounted on the side of the tank, it shows the level of hydraulic oil.

Temperature gauge – Some oil tanks are equipped with a thermometer to show the temperature of the hydraulic oil.

Coupling pipe - to convey hydraulic driving force, most of them are made of steel pipes, but some of them are pressure-resistant hoses.