The hose valve is a device that controls the direction, pressure, and flow of the fluid in the hose line fluid delivery system. With throttle, stop flow, flow diversion or relief pressure and other functions, control of production equipment and process of normal operation. Can be used to control oil, water, gas and other corrosive media, working pressure can be used for high pressure or high pressure hose.
Hose valve structure and working principle Hose valve structure type throttle valve, gate-shaped, gate-shaped, screw-shaped, spherical, screw-shaped, dish, slide valve-shaped and so on. Ball and disk hose valves are typically used to shut off or connect media flow. Non-return hose valves are used to prevent media backflow. Dispensing hose valves, as their name implies, are separating, dispensing or mixing media. Such hose valves also include dispensing profiles. Safety hose valves are also very common and are used to protect the piping system and equipment when overpressurized.
The working principle of the hose valve When it comes to the working principle of the hose valve, we should start with the hose valve actuation. The general direction is divided into: self-driven hose valve and power-driven hose valve. Self-driven transmission medium is its own energy as a driving force, such as safety hose valves, vacuum hose valves, hydrophobic hose valves and so on. Power-driven is simply external drive, such as electric, pneumatic, hydraulic and combined drive (gas - electric, liquid - electric, etc.).
Hose valve wear characteristics introduced 1. Hose valve with a multi-purpose valve function, it can replace the gate valve, globe valve, regulating valve use. 2. Rubber is far more resistant to wear than steel, iron and other metal materials, with very little wear when the fluid is packed with solid particulate media. 3. Rubber tube is based on chemical production needs of users, using a variety of formulations made. Therefore, it can be used under different chemical media and with different erosion conditions for a long time. Hose divided into ordinary and enhanced two. 4. Hose with flange at both ends. When the valve and the pipe connection, without additional sealing gaskets, the valve position no run, run, drip, drain and other undesirable phenomena. 5. Simple structure, easy maintenance and replacement hose. 6. Cold hardiness. As the fluid medium flows through the elastic hose, the shell cracking caused by the fluid crystallization is eliminated.
Hose valve installation details and skills 1. Installation process should always follow the pneumatic hose valve installation instructions and attention points; 2. Hose valve working environment temperature (-30 ~ +60) relative humidity less than 95% 95% Relative humidity of not more than 95%; 3 hose position before and after the valve should be straight pipe length of not less than 10 times the pipe diameter (10D) to prevent the valve straight pipe is too short and affect the flow characteristics; 4 between the installation of valves , Read the instruction manual first. Instruction manual describing the product and safety precautions and pre-installation and installation precautions should be noted; 5 confirm pipeline cleaning: foreign objects in the pipeline may damage the sealing surface of the valve or even impede the movement of the spool, ball or butterfly and Cause the valve can not be properly closed. In order to reduce the possibility of dangerous situations, it is necessary to clean all the pipes before installing the valve. Make sure to remove pipe dirt, metal debris, welding slag and other foreign objects. In addition, inspect the pipe flange to ensure that there is a smooth gasket surface. If the valve has a threaded end, apply a high grade pipe sealant to the male thread of the pipe. Do not apply sealant to the female thread because the excess sealant on the female thread will be squeezed into the body. Excess sealant will cause the valve plug or dirt accumulation, which led to the valve can not be properly closed; 6. We carefully check the hose valve: Check and remove all the transport stop before installation, protective plug or gasket The surface of the cover, check the valve body to ensure that there is no foreign body; 7 hose valve should be installed in the horizontal pipe, and up and down perpendicular to the pipeline, generally under the valve to be supported to ensure a solid and reliable. For special occasions, the need for regulating valve installed in the vertical pipe when the valve should also be supported (except for small-caliber control valve). 8. Avoid leaving additional strain on the regulator during installation.) 8. Make sure that there is enough space above and below the valve for easy disassembly of the actuator or valve plug for inspection and maintenance. For flanged valve bodies, make sure that the flange faces are properly aligned so that the gasket surface contacts evenly. After the flange is centered, gently tighten the bolts and finally tighten the bolts in a staggered pattern.
Hose valve storage and installation precautions: 1. The valve should be stored in a dry room, both ends of the pathway must be blocked, not allowed to heap storage; 2. Long-term storage of the control valve should be regularly checked to remove dirt, 3, the valve should be installed in the horizontal pipe, compulsory vertical installation, the valve stem upward; 4 compulsory according to the arrow pointing finger medium installation.
Hose valve installation and maintenance (1) the bottom of the electric contact tank plastic pipe inserted into the fluorine-lined valve, exhaust valve on one end of the valve hose, the other end of the plastic tube to support the supply into the export to the electrical contact slot and then use copper wire Or stainless steel hoops tied both ends. (2) long time use, colloid mill, emulsifying machine, filter, if there is wear or leakage, as long as the left and right valve body to open the pipe sleeve, the valve can be long-term use.
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