Hydraulicly: The hydraulic oil generated by the hydraulic press passes through the pressure equipmen

The hydraulic press includes a power element, a hydraulic actuator, a pressure control element, and an auxiliary component, and the medium is circulated in this closed-circuit system, first of all, the hydraulic oil is pressed to the hydraulic actuator (such as hydraulic cylinder) through the part that generates pressure is the pressure generated by the hydraulic pump extrusion, and then the actuator produces the corresponding movement. The pressure control element is a large number of valve blocks, which also ensures the accuracy of the pressure and the safety of the entire hydraulic system.

The principle is similar to the water flow behind the coarse water pipe followed by a lot of thin water pipes circulating flow, the more thin water pipes, then the water flow allocated to each water pipe will be less, if a coarse water pipe only one water pipe, then to ensure that all the water in the coarse water pipe through the thin water pipe, then the water surface in the thin water pipe will flow very quickly, so the water pressure in the water pipe must be very large. To put it simply, pressure is generated in this way, and the movement of the executive part of the hydraulic pressure is generated by adjusting the flow rate of the water pipe.

To put it simply, that's what it is.

The principle of the air compressor is that the motor is generated by a specially shaped blade. This principle is much simpler than that of hydraulics.

The hydraulic oil must be returned to the oil tank on the hydraulic press, and it cannot be thrown away after using it once, and the ground is full of oil.

It doesn't matter if the air compressor is air, the medium is air, which can be directly discharged into the atmosphere without pollution.

The hydraulic press is a closed-loop system and the air compressor is an open-loop system.

The requirements of hydraulic press for hydraulic oil are very important, hydraulic press should use hydraulic oil with different viscosity in different working environments, the following is a brief introduction to the use of hydraulic oil of hydraulic press;

The hydraulic press relies on the hydraulic oil to transmit kinetic energy, and the correct selection of hydraulic oil is directly related to the performance of the hydraulic press.

There are many brands of hydraulic fluid, Great Wall, Kunlun, and Shell are all good choices.

To choose hydraulic oil, it is necessary to choose different types of hydraulic oil according to the system pressure of the hydraulic press, the working environment and temperature of the hydraulic press.

Hydraulic oil is divided into general hydraulic oil, anti-wear hydraulic oil, guide rail hydraulic oil, low-temperature hydraulic oil and so on according to the different additive components added to the base oil. If the system pressure in the hydraulic press is 7MPa, the general selection of HL type general hydraulic oil can be, if the hydraulic press is used as a piston pump or vane pump as the power source, the pressure of the system is medium and high pressure, heavy load, then the hydraulic oil selected in the system should be HM type anti-wear hydraulic oil, so as to ensure the normal operation of the fine parts in the hydraulic system, if the ambient temperature is below zero degrees Celsius low temperature occasions, HS type low-temperature hydraulic oil should be selected. HV type cryogenic hydraulic oil is suitable for lower environmental applications than HS type cryogenic hydraulic oil.

Even if it is the same type of hydraulic oil, the hydraulic press should also use hydraulic oil with different viscosities at different ambient temperatures. Dynamic viscosity is an indicator that reflects the fluidity of hydraulic fluids. Dynamic viscosity:

It is the force required to produce a unit flow rate using a unit area of liquid layer per unit distance. Unit: Pa per second).

Kinematic viscosity: that is, the ratio of dynamic viscosity to density, the customary unit is: cents.

The smaller the dynamic viscosity, the better the fluidity at low temperatures. L-HM32, L-HM46 and L-HM68 are the most commonly used types of anti-wear hydraulic fluids.

The suitable working temperature of hydraulic oil is 20 --60. The hydraulic press produced by Dalian Qunying machine tool, according to the actual situation, is equipped with a tubular cooler or an air-cooled oil cooler and an automatic heating device for oil temperature in the oil tank, and the hydraulic press works through the temperature measuring device, sends a signal and PLC, and automatically opens or closes the heating or cooling device to achieve the function of automatic control of oil temperature. Therefore, Dalian hydraulic press generally uses L-HM46 hydraulic oil as the four-season hydraulic oil.

If you used to use 46, when you want to change 68, it is best to put 46 first, and then add 68, you can't mix it because of saving a little cost.

Very simply, the oil product declines, the oil performance cannot be mastered, and the equipment may have abnormal reactions.

Is it true that the pressure in the hydraulic system is generated by the operation of the hydraulic pump?

Dear, hello, the worm and the winter are back, and have helped you find the result: the pressure of the hydraulic system is generated by the operation of the hydraulic pump, which is the right <>

The hydraulic pump is mechanically or electrically driven, sucking the liquid from the hydraulic tank and pressurizing it, and then piped it into a hydraulic actuator such as a hydraulic cylinder or hydraulic motor. In hydraulic actuators, the pressure of the liquid is converted into force or bridge motion, which enables the operation of mechanical equipment. The pressure generated by the operation of the hydraulic pump depends on the type of pump, speed, displacement and working conditions.

Common hydraulic pumps include gear pumps, vane pumps and piston pumps, etc., which have different working principles and structures, so the pressure generated is also different. Dear, the above is mine, I hope it can help you

Summary. The hydraulic pump works by the change of the volume of the sealing cavity. When the cam 1 is driven to rotate by the prime mover, the plunger 2 reciprocates in the cylinder block 3 under the effect of cam 1 and spring 4.

There is a good matching accuracy between the cylinder bore and the outer circle of the plunger, so that there is basically no oil leakage when the plunger is reciprocating in the cylinder bore, and the metal band sawing machine has good sealing.

The pressure of the liquid in the hydraulic system is generated by 1 overcome by the hydraulic pump and automatically changes with 2 in the same direction+

Hello, what specific question do you want to ask?

The pressure of the liquid in the hydraulic system is generated by 1 overcome by the hydraulic pump and automatically changes with 2 in the same direction+

The hydraulic pump relies on the change of the volume of the sealing cavity to the workers to regret. When the cam 1 is driven to rotate by the prime mover, the plunger 2 reciprocates in the cylinder block 3 under the effect of the beating dismantling cam 1 and the spring 4. There is a good matching accuracy between the cylinder bore and the outer circle of the column Zhaoyin plug, so that there is basically no oil leakage when the plunger is reciprocating in the cylinder bore, and the metal band sawing machine has good sealing.

Hello, the above information is for your reference.

Hello dear, glad you asked! The pressure of the liquid in the Paitan section of the hydraulic system is generated by what is overcome by the hydraulic pump and automatically changes with what and what: in the hydraulic system, the liquid pressure is generated by the load.

The amount of liquid pressure depends on the size of the load. There are three important parameters of the hydraulic system, which are the working pressure, the amount of system flow, and the power. The working pressure depends on the load and is independent of the liquid flow.

The speed of movement of the actuators of the system depends on the flow rate and is independent of the working pressure. Power is equal to pressure multiplied by flow.

The pressure of the liquid in the hydraulic system is generated by what is overcome by the hydraulic pump and automatically changes with what and what changes, hello, working pressure: the pressure when the system is working, with the size of the load. Maximum pressure:

Short-term or instantaneous permissible pressure in excess of the rated pressure. Pressure rating: The maximum pressure at which the pump is allowed to operate for a long period of time, usually the design pressure of the pump.

The maximum pressure is greater than the rated pressure. The rated pressure is greater than or equal to the working pressure. The working pressure of the hydraulic pump refers to the pressure of the hydraulic pump to output the oil when it is actually working, that is, the pressure established by the oil to overcome the resistance.

The working pressure of the hydraulic pump is related to the external load, and if the external load increases, the working pressure of the hydraulic pump also increases. The maximum working pressure of the hydraulic pump refers to the increase of the working pressure of the hydraulic pump with the increase of external load, when the working pressure increases to the strength allowable value of the parts of the hydraulic pump itself and the maximum allowable leakage, the working pressure of the hydraulic pump will no longer increase, and the working pressure of the hydraulic pump is the highest working pressure. The rated pressure of the hydraulic pump refers to the maximum working pressure that the hydraulic pump is allowed to reach during operation, that is, the pressure marked on the nameplate of the hydraulic pump or the product sample.

Considering that the hydraulic pump should have a certain pressure reserve in the work, and have a certain service life and volumetric efficiency, usually its working pressure should be lower than the rated pressure. In the hydraulic system, the working pressure of the fixed pump is adjusted by the relief valve and stabilized; The working pressure of the variable pump can be adjusted by means of a regulating device on the pump itself. It should be noted that the output pressure of the hydraulic pump should not be mistaken as the rated pressure, but the working pressure.

I hope my answer is helpful to you, and finally I wish you good health and a happy mood again! <>

It consists of two tanks of different sizes, filled with water or oil. The one filled with water is called a "hydraulic press"; The oil-filled one is called a "hydraulic press". Each of the two cylinders has a piston that can slide, and if a certain amount of pressure is added to the small piston, according to Pascal's law, the small piston transmits this pressure through the pressure of the liquid to the large piston, and the large piston is pushed up.

Let the cross-sectional area of the small piston be s1, and the downward pressure applied to the small piston is f1. So, the little piston is right.

It can be transferred in all directions by the liquid without changing the size". The pressure experienced by the large piston must also be equal to p. If the cross-sectional area of the large piston is S2, the upward pressure generated by the pressure P on the large piston.

The cross-sectional area is a multiple of the cross-sectional area of the small piston. From the above formula, if a small force is added to the small piston, a large force will be obtained on the large piston, for which a hydraulic press is used to press plywood, extract oil, extract heavy objects, forge steel, etc.

A hydraulic press is a machine that --- Pascal's law according to the law of pressure transfer of liquids, which can make a small force produce a large lifting force (or pressure).