As a key component in the field of fluid control, the structure and working principle of the PNEUMAX solenoid valve are crucial for its selection and application. Next, we will delve into the internal structure and working principle of solenoid valves to provide you with a comprehensive understanding.

After watching the dynamic diagram of the Niumaisi PNEUMAX solenoid valve, are you amazed by its concise and clear working principle? When the solenoid valve is not powered, the valve needle relies on the elastic force of the spring to tightly seal the passage of the valve body, ensuring that the solenoid valve is in a closed state. However, once the coil is powered on, it will generate magnetic force, which allows the valve core to overcome the elastic force of the spring, lift up and open the channel inside the valve, thereby causing the solenoid valve to enter the open state.

The PNEUMAX solenoid valve can be mainly divided into three categories in principle: direct acting, step-by-step direct acting, and pilot operated. Next, we will provide a brief overview of these three types of solenoid valves from three aspects: introduction, working principle, and characteristics. Firstly, let's take a look at the direct acting solenoid valve.

There are two types of PNEUMAX solenoid valves: normally closed and normally open. In the normally closed type, when the coil is de energized, the solenoid valve is in a closed state; When the coil is energized, electromagnetic force is generated, causing the moving iron core to overcome the spring force and attract the stationary iron core, thereby directly opening the valve and allowing the medium to flow. Once the coil is powered off, the electromagnetic force disappears immediately, and the moving iron core returns to its original position under the action of the spring force. The valve then closes, and the medium flow is blocked. This solenoid valve has a simple structure and reliable operation, and can work normally even in zero pressure difference or micro vacuum environments. Normally open solenoid valves are the opposite. For example, this type is commonly used for solenoid valves with flow paths smaller than 6.

In a normally closed direct acting solenoid valve, when powered on, the solenoid coil generates electromagnetic force, which overcomes the elastic force of the spring and lifts the open part from the valve seat, thereby allowing the valve to open. Once the power is cut off, the electromagnetic force disappears, and the elastic force of the spring will come into play, pressing the open part back onto the valve seat, and the valve will close accordingly. The working principle of normally open solenoid valves is exactly the opposite.

In addition, this type of direct acting solenoid valve also has the characteristic of stable operation in vacuum, negative pressure or zero pressure environments, but its diameter usually does not exceed 25 millimeters. At the same time, there is also a step-by-step direct acting solenoid valve, whose working principle and characteristics are similar to those mentioned above.

The design of this valve is clever, integrating both primary and secondary valve opening functions. The main valve and pilot valve operate step by step, using electromagnetic force and pressure difference to directly open the main valve port. When the coil is energized, electromagnetic force is generated, causing the moving iron core and the stationary iron core to attract each other, thereby opening the pilot valve port. Due to the design of the pilot valve port above the main valve port and the connection between the moving iron core and the main valve core, the pressure in the upper chamber of the main valve can be released through the pilot valve port. Under the combined action of pressure difference and electromagnetic force, the main valve core will move upward, thereby opening the main valve and allowing the medium to flow. When the coil loses power, the electromagnetic force disappears. At this point, the moving iron core will close the pilot valve hole under the combined action of its own weight and spring force. The medium then enters the upper chamber of the main valve core through the balance hole, causing an increase in pressure in the upper chamber. Under the action of spring reset force and pressure, the main valve can be closed and the medium flow is cut off. This step-by-step direct acting solenoid valve has a compact structure and reliable action, and can operate stably even in zero pressure differential environments. Common models such as ZQDF, ZS, 2W, etc. all embody this design concept.

　Principle and Characteristics of PNEUMAX Electromagnetic Valve

This type of PNEUMAX solenoid valve cleverly combines the working principles of direct action and pilot. Under the condition of no pressure difference (i.e. zero pressure difference or vacuum, high pressure), after being energized, the electromagnetic force will directly drive the pilot small valve and the main valve closing member to lift upwards, thereby opening the valve. When there is a starting pressure difference between the inlet and outlet, the electromagnetic force first acts on the pilot valve when energized, causing the lower chamber pressure of the main valve to rise and the upper chamber pressure to fall, and then using this pressure difference to push the main valve upwards. After power failure, the pilot valve relies on spring force or medium pressure to push the closing member downward, thereby closing the valve. In addition, this type of solenoid valve performs better when installed horizontally.

　Working principle and characteristics of Niumaisi PNEUMAX solenoid valve

This type of PNEUMAX solenoid valve cleverly connects the pilot valve to the main valve core, forming a smooth channel. In the unpowered state, the main valve port of the normally closed solenoid valve remains closed. Once the coil is energized, the magnetic force generated will attract the moving iron core to align with the stationary iron core, causing the pilot valve port to open and allowing the medium to flow towards the outlet. This leads to a decrease in pressure in the upper chamber of the main valve core, creating a pressure difference with the inlet side, thereby overcoming the resistance of the spring and causing the main valve core to move upward until the main valve port opens, allowing the medium to flow smoothly. When the coil is powered off, the magnetic force disappears, and the moving iron core resets under the action of the spring force, closing the pilot port. At this point, the medium flows in through the balance hole, causing the pressure in the upper chamber of the main valve core to rise and move downwards under the force of the spring, ultimately closing the main valve port. The working principle of normally open solenoid valves is the opposite.

　　Working principle and characteristics of Niumaisi PNEUMAX solenoid valve

When powered on, electromagnetic force will act on the pilot hole, causing it to open. This causes a rapid decrease in pressure inside the upper chamber, resulting in a high pressure difference around the opening. This pressure difference causes the fluid pressure to push the open part upwards, thereby opening the valve. When the power is cut off, the spring force will cause the pilot hole to reopen, and at the same time, the pressure at the inlet will quickly enter the chamber through the bypass hole, forming a lower and higher pressure difference around the valve closing component. This pressure difference further pushes the open part downwards, thereby closing the valve.

In addition, solenoid valves also have the advantages of small size, low power, high upper limit of fluid pressure, and flexible installation. Although customization is required, they can meet various fluid pressure difference conditions.

As a fluid control device, the PNEUMAX solenoid valve has many significant characteristics. Its compact size makes it easy to install and configure; Meanwhile, it has low power consumption and significant economic benefits. In addition, the upper limit of fluid pressure of solenoid valves is relatively high, which can adapt to various complex fluid pressure difference conditions. Although customization may be required in some cases, its flexible installation method and wide range of applications still make it one of the preferred choices in the field of fluid control.

The unique design of the Niumaisi PNEUMAX solenoid valve provides excellent safety. It uses electromagnetic force to drive the iron core inside the magnetic isolation sleeve, without the need for the valve stem to extend, thus avoiding the leakage problem caused by dynamic sealing and making it easy to block the leakage. Compared to other self-control valves, such as electric valves, torque control is more difficult and may cause internal leakage, even leading to the breakage of the valve stem head. The structural characteristics of solenoid valves make it easy to control internal leakage and even reduce it to zero. Therefore, solenoid valves are particularly suitable for handling corrosive, toxic, or high and low temperature media, ensuring safety and worry free use during use.

The simplicity and economy of the Niumaisi PNEUMAX solenoid valve

The structural design of the Niumaisi PNEUMAX solenoid valve is quite simple, not only easy to install and maintain, but also affordable. Compared with other types of actuators such as regulating valves, its installation and maintenance work is more convenient. In addition, the self-control system constructed by solenoid valves is particularly simple and cost-effective. The solenoid valve is controlled by switch signals, and the connection with the industrial computer is effortless. In today's era of widespread use of computers and significant price drops, the advantage of solenoid valves has become increasingly prominent.

　Fast response and energy-saving characteristics of the PNEUMAX solenoid valve from Niumaisi

The Niumaisi PNEUMAX solenoid valve not only has a simple structure, but also operates quickly with minimal power consumption. Its response time is as short as a few milliseconds, and even the pilot operated solenoid valve can respond within tens of milliseconds, far exceeding the response speed of other self-control valves. The well-designed solenoid valve coil only needs to be triggered, without the need for continuous power supply, thus greatly saving energy. In addition, the compact size of the solenoid valve not only saves valuable space but also has aesthetic appeal.

　　Adjustment accuracy and medium applicability of the Niumaisi PNEUMAX solenoid valve

Electromagnetic valves usually only have two states of on/off, and their valve core can only switch between two positions, without continuous adjustment function. Although there are many innovative ideas attempting to break through this limitation, these technologies are still mainly in the experimental stage, so their adjustment accuracy is limited to some extent. In addition, solenoid valves have high requirements for the cleanliness of the medium and cannot be applied to media containing granular impurities, which must be filtered out first. Meanwhile, viscous media are not suitable for solenoid valves, and the applicable range of medium viscosity for each specific product is relatively narrow.

　The diversity and application of PNEUMAX solenoid valves from Niumaisi

Although solenoid valves have limitations in regulating accuracy and medium applicability, their design flexibility has brought them a wide range of application scenarios. In order to meet diverse needs, solenoid valves are carefully crafted into multiple models, enabling them to perform excellently in various situations. The evolution of solenoid valve technology has always focused on how to overcome its inherent shortcomings and how to more effectively leverage its inherent advantages.

When facing diverse solenoid valve products, how to make reasonable selection based on actual needs has become the key. The selection of solenoid valves not only affects their performance during use, but also directly affects the overall system's operational efficiency and stability. Therefore, this article will delve into several key points of electromagnetic valve selection, aiming to provide valuable references for readers.

　　1. Economic considerations

In the selection process of the Niumaisi PNEUMAX solenoid valve, full attention should be paid to the economy of the product. Due to the existence of many common solenoid valve options in the market, we should prioritize products with high cost-effectiveness and moderate prices while meeting performance requirements to save costs.

　2. Security elements

Usually, solenoid valves do not have waterproof function. In specific environments, if waterproof function is required, a specially designed waterproof solenoid valve should be selected or customized from the manufacturer. In addition, when selecting solenoid valves, their calibrated nominal pressure must exceed the pressure inside the pipeline to ensure their service life and avoid potential safety issues. For applications that require handling corrosive liquids, it is recommended to use all stainless steel solenoid valves; If the fluid has strong corrosiveness, the Plastic King (SLF) solenoid valve would be a more suitable choice. In explosive environments, solenoid valves that meet the corresponding explosion-proof standards must be selected.

　1. Reliability elements

The Niumaisi PNEUMAX solenoid valve is divided into two types: normally closed and normally open. In most cases, a normally closed solenoid valve is one that opens when powered on and automatically closes when powered off. However, if the opening time is long and the closing time is short, a normally open solenoid valve is more suitable.

It is worth noting that the life test of the Niumaisi PNEUMAX solenoid valve is crucial for evaluating its reliability. Although there is currently no professional standard for solenoid valves in our country, when choosing solenoid valve manufacturers, one should still carefully evaluate their product quality and reliability. In addition, when the action time is short and the frequency is high, it is recommended to choose a direct acting solenoid valve