Pneumatic solenoid valves are widely used in chemical production. They are usually used to be installed on the pneumatic circuit of pneumatic actuators to control the switching of valves by controlling the opening and closing of the gas circuit. However, in practical engineering design applications, instrument designers who are self-controlled are usually not fully aware of the basic knowledge of solenoid valves and their aerodynamic symbols. This is a great choice for selecting and designing a suitable gas path map. obstacle. Pneumatic solenoid valves are pneumatic components used to control compressed air pressure, flow direction and other functions. The installation of solenoid valve products has the following points to note:
1. For the installation of solenoid valve products, first of all, it is necessary to ensure that the working range conditions of the pneumatic solenoid valve products are consistent with the actual working place. Do not force the installation beyond the working range of the solenoid valve product, otherwise the solenoid valve may be damaged and accidental. The situation has happened. The working conditions that need to be noted mainly include the power supply voltage, pressure range, differential pressure range, media properties, environment and operating temperature of the work site. Different working environments have corresponding solenoid valve products corresponding to them, users can choose products suitable for the working environment, do not force the installation of unsuitable solenoid valve models.
2. The installation direction of the solenoid valve product should pay attention to the main components of the solenoid valve. The installation of the coil and solenoid valve coil should be installed vertically on the pipeline, and the pipeline should be kept at the level of the ground. Otherwise, the solenoid valve product is prone to failure when working, such as unable to work. However, in order to meet the special working environment, there are solenoid valve products that can be installed sideways. The specific model users can consult the sales personnel of the force code valve industry.
3. Since some solenoid valve products are related to electromagnetics due to their working principle, the requirements for the working environment are high, such as the cleanliness of the interior and the pipeline, so the user needs to wash and purge the pipeline and the interior during the actual installation. In order to ensure the internal and pipeline cleaning, so that impurities do not affect the normal operation of the solenoid valve products. In addition, in order to ensure that there is no foreign matter entering the solenoid valve product during operation, it is necessary to install a filter and a filter in the pipeline.
4. Since the solenoid valve products are often used with fluid conveying equipment such as pumps, there is also a water hammer phenomenon in actual work. When using pneumatic component solenoid valve products, users need to use waterproof hammer. Performance solenoid valve products.
5. If the solenoid valve product needs to work for a long time, the user needs to install the bypass when actually installing, so that the solenoid valve product can be easily maintained when it works and fails.
6, in addition to the vacuum line and special circumstances, the general solenoid valve products must pay attention to the installation direction of the solenoid valve when installing. Generally, it is marked on the valve body of the solenoid valve, a mark similar to an arrow, →. This represents the direction of transport of the media.
7. Normally open and normally closed solenoid valves can not be used interchangeably. This will cause the solenoid valve coil to burn out and reduce the service life of the solenoid valve. Therefore, the user should not let the solenoid valve be in the long time under actual use. Powered state.
Pneumatic solenoid valve operation method
1. The opening and closing direction of the pneumatic valve should be closed clockwise.
2, due to the pneumatic valve in the pipe network, often manual opening and closing, the number of opening and closing rotation should not be too much, that is, the large diameter valve should also be within 200-600 rpm.
3. In order to facilitate the opening and closing operation of a person, under the condition of pipeline pressure, the large opening and closing torque should be 240N-m.
4, pneumatic valve open and close operation end should be square, and the size is standardized, and facing the ground, so that people can directly operate from the ground. Valves with discs are not suitable for underground pipe networks.
5, the display panel of the pneumatic valve opening and closing degree:
6. The scale line of the opening and closing degree of the pneumatic valve should be cast on the outer cover of the display panel after the gearbox cover or the direction of the conversion. Always face the ground, the scale line is brushed with phosphor to show eye-catching; 2 indicates the needle of the disc. The material can be used in the case of better management. Stainless steel plate is used. Otherwise, the painted steel plate should not be made of aluminum. 3 The indicator pin is conspicuous and fixed. Once the opening and closing adjustment is accurate, it should be locked with rivets.
7. If the pneumatic valve is buried deep, and the distance between the operating mechanism and the display panel is ≥1.5m from the ground, the extension rod installation should be provided and fixed firmly so that people can observe and operate from the ground. That is to say, the valve opening and closing operation in the pipe network is not suitable for downhole operation.