ATOS Atos Electromagnetic Directional Valve SDHL-0713 Product Delivery

ATOS Atos Electromagnetic Directional Valve SDHL-0713 Product Delivery

ATOS Atos Electromagnetic Directional Valve SDHL-0713DC20S High Quality and High Price

Shanghai Pumin Industrial Automation Equipment Co., Ltd. specializes in the sales of imported spare parts from Europe and America. The company has its own offices in Germany and the United States for direct procurement, with first-hand sources and competitive prices in the market.

Price advantage: We directly obtain quotes from factories, avoiding many intermediate links. Many factories offer us fixed discounts to ensure that we provide customers with favorable prices.

Wide channels: In addition to factories, we have direct business relationships with many distributors in Europe, which allows us to purchase products that cannot be quoted due to protecting agents.

The core function of ATOS solenoid directional valve is to accurately and quickly control the on/off and flow direction switching of hydraulic oil circuit through electrical signals, thereby driving the actuator (such as hydraulic cylinder or motor) to complete the predetermined directional action. The essence of its working principle is to efficiently convert the magnetic force generated by the electromagnetic coil into precise linear displacement of the valve core. Through the specific relative position changes between the grooves (control edges) precision machined on the valve core and the internal holes (oil ports) of the valve body, the connection relationship between different oil ports can be reorganized.

The specific working process can be understood in depth as follows: the valve body is usually cast or machined with multiple standardized oil ports, including a pressure oil port (P) connected to the pressure source, a return oil port (T) connected to the oil tank, and working oil ports (A and B) respectively connected to the actuator (such as the two chambers of the hydraulic cylinder). The valve core is a precision ground cylindrical slide valve with several annular grooves (chamber grooves) and raised shoulders on its surface. The axial width of these shoulders and the depth and width of the grooves have been carefully designed to strictly match the position of the valve body holes.

In the initial state where the valve core is not subjected to external force (i.e. the electromagnet is not powered) (usually in the neutral position or a position positioned by a spring), the valve core stabilizes at a predetermined position under the action of a reset spring (single spring or centering spring). At this point, the shoulder of the valve core will precisely cover or open the corresponding oil port channel on the valve body, forming a specific oil connection mode. For example, under the neutral function of spring reset, the P, T, A, and B ports may be completely closed (O-type), or the P port may be closed while the A and B ports are connected to the T port (Y-shaped, H-type, etc.), depending on the structural design of the valve core at that position.

When the control system issues a command to apply a specific voltage (DC or AC, depending on the valve design) to the electromagnetic coil on one side of the valve body, current flows through the coil winding. According to the principle of electromagnetic induction, an electromagnetic field is instantly generated around an energized coil. This magnetic field acts on the movable ferromagnetic component inside the valve - the armature (or armature). The armature is strongly attracted by the electromagnetic field, overcoming the spring force, frictional resistance, and possible hydraulic force acting on it, resulting in a linear displacement along the axis direction.

The linear motion of this armature is directly and rigidly transmitted to the valve core through a rigid push rod (or connecting rod). The push rod is usually fixedly connected or in close contact with the valve core. Therefore, electromagnetic force is transmitted through the armature and push rod, and ultimately converted into mechanical thrust that drives the valve core to slide in the precision inner hole of the valve body. Under the action of thrust, the valve core compresses (or stretches) the return spring, slides from the initial position towards the side where the electromagnet is located, until it reaches a new equilibrium position (usually the working position). This sliding stroke is precisely controlled, usually only a few millimeters.

As the position of the valve core changes, the relative position relationship between the shoulder and groove on its surface and the various oil ports inside the valve body undergoes a critical change. The oil port channel that was originally closed by the shoulder may be opened (with the groove aligned with it), while the oil port channel that was originally connected may be blocked by the shoulder. For example, when the left electromagnetic iron is energized, the valve core is pushed to the right (from the initial position to the left position), and the valve core structure allows the P port and A port to communicate through the groove on the valve core, while the B port is connected to the T port. In this way, pressure oil enters port A to drive the actuator (such as the hydraulic cylinder piston rod extending), and the return oil from the other chamber of the actuator flows back to the oil tank through port B and port T. On the contrary, when the right electromagnetic iron is energized, the valve core is pushed to the left (from the initial position to the right position), the P port is connected to the B port, and the A port is connected to the T port. The pressure oil drives the actuator to move in the opposite direction (such as the piston rod retracting)

ATOS Atos Electromagnetic Directional Valve SDHL-0713 Product Delivery

As the core control component in hydraulic systems, the ATOS electromagnetic directional valve is characterized by high reliability, fast response, compact structure, and engineering adaptability. This brand's products demonstrate excellent performance in harsh industrial environments through precise manufacturing processes and innovative design concepts. Its core advantages lie in its sealing performance and extremely low internal leakage. The valve core and valve body adopt nanometer level precision fitting clearance, supplemented by optimized sealing structures (such as special material sealing rings or precision ground metal sealing surfaces). Even under high pressure (up to 350 bar or even higher) and high oil pollution conditions, it can effectively prevent pressure oil from leaking from the high-pressure chamber to the low-pressure chamber, ensuring stable system efficiency and controllable energy consumption. In terms of dynamic response, thanks to the efficient electromagnetic design (such as wet AC or DC electromagnetic), its action time is extremely short, and the power on/off switching is fast (the switching time can be as low as milliseconds), which is particularly suitable for automation systems that require high-frequency commutation or precise position control (such as injection molding machines, machine tools, presses, etc.), and can accurately match the needs of modern industry for fast cycling and real-time control.

In terms of structural design, ATOS solenoid valves exhibit a high degree of modularity and compactness. The valve body adopts standardized interfaces (compliant with ISO 4401 standard), making installation, replacement, and integration extremely convenient; The electromagnetic part usually adopts a wet armature structure, that is, the armature is immersed in hydraulic oil to work. This design not only greatly reduces the wear and impact noise of moving parts through the lubrication and damping effect of oil, significantly extending the service life (up to millions of actions), but also eliminates the risk of oil seeping into the coil and burning out due to sealing failure of traditional dry-type electromagnets, greatly improving reliability and maintenance free performance. At the same time, the special surface treatment technology of the valve core (such as hard chrome plating, nitriding, or using wear-resistant alloys) enhances its anti pollution, anti wear, and anti sticking ability, even in oil containing small solid particles, it can maintain smooth sliding and reduce the failure rate.

In addition, ATOS solenoid valves provide an extremely rich range of functional options to meet diverse system requirements. By changing the shoulder structure and groove layout of the valve core (i.e. "center function", such as O-type, Y-type, H-type, P-type and dozens of other standard and non-standard types), different oil circuit connection methods (such as cylinder locking, oil pump unloading, oil cylinder floating, etc.) can be achieved in the neutral state without electricity, providing great flexibility for hydraulic system design. Its broad range of flow applications (from small flow rates of a few liters per minute to large flow rates of several hundred liters) covers a wide range of fields from light load precision equipment to heavy-duty construction machinery. For high flow applications, the pilot controlled design is particularly critical: a small-sized electromagnetic pilot valve controls the pilot oil circuit, using the hydraulic pressure amplification effect to push the main valve core, so that high flow switching can be achieved with a small electromagnetic force, solving the contradiction between high flow and miniaturization and low power consumption of the electromagnet.

These products are widely used in fields such as steel, automotive, papermaking, energy, petrochemicals, textiles, injection molding, metallurgy, aerospace, rubber, water conservancy, power plants, medical and food packaging, metallurgical industry, automotive industry, power equipment, chemical industry, engineering machinery, papermaking industry, shipbuilding industry, and machine tool manufacturing.

Rexroth, Hydac, Parker, WEBTEC, Atos,

EBRO, METRIX, Megger, ODE, HEIDENHAIN, Heidenhain, USA

Samson, Aventics, Bently, Ifm,

Fairchild, Asco solenoid valve, P+F, MOOG servo valve,

Burkert, Balluff, Pilz, Baumer,

Hengstler, Norgren, Mac solenoid valve from the United States, EPRO from Germany,

Danfoss, German HBM sensors, Lenze Lenz, Tiefenbach, and others

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Proportional valve \ \ DHZO-T-073-L5/B31/PE

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