1. commutation insensitive fault

1. The eccentricity in the assembly is due to the error in the flatness of the joint surface of the pneumatic reversing valve, which leads to the excessive force of the assembly personnel when installing the fastening screws, resulting in the deformation of the valve body and the eccentricity of the valve core;

2. Insufficient machining accuracy, the manufacturing accuracy of the pneumatic reversing valve spool and valve hole is relatively high. If the machining accuracy is not enough, the friction force will become larger, the spool movement will not be agile, and even the spool will be stuck;

3, pollutants wedged or bonded in the gap between the valve core and the valve hole, the main pollutants are solid particles, colloidal sludge, rust, etc., these pollutants increase the wear between the valve core and the valve hole, but also the resistance of the valve core movement becomes larger, the mild situation makes the commutation is not agile, the severe situation makes the valve core stuck.

2. leakage fault

1. Excessive internal leakage is due to the frequent reversing of the pneumatic reversing valve, and the wear between the valve core and the valve hole makes the matching clearance between the two larger, which causes the internal leakage to increase. This situation will make the energy loss of the system larger. If the sealing ring is damaged due to dirt and corrosion, it will also cause the internal leakage to become larger;

2. The serious external leakage is mainly caused by the aging of the combined sealing ring or the deformation of the sealing ring.

Insufficient 3. control force fault

If the control holes at both ends of the reversing valve are blocked, on the one hand, the control air pressure is insufficient, resulting in weak reversing, and it may not be reversed; on the other hand, the return spring will be subject to fatigue deformation under long-term frequent and repeated use, causing the valve core Reset lag, or even reset.

4. solenoid burnout fault

The occurrence of this kind of fault is caused by the high temperature caused by the excessive excitation current of the coil. The electromagnetic coil is affected with damp, the resistance of the valve core is too large, and dirt such as dust and sand runs into the coil, which will cause the electromagnetic coil to burn out, especially the pilot valve coil is more likely to burn out.

Therefore, Wuhan Xiete Valve Technology Co., Ltd. professional and technical personnel to improve the manufacturing and assembly accuracy of the reversing valve, through the rational selection of components, strengthen the purification of the gas source and the lubrication of the reversing valve to extend the service life and accuracy of the reversing valve, And then ensure the normal operation of the system.

5. pneumatic components malfunction

1. The gas source treatment does not meet the requirements

After the disintegration of most pneumatic components, some rust water often flows out of the working cavity, indicating that the air source is not dry enough, and the water in the air source accumulates in the working cavity of the component, resulting in corrosion of the working surface of the component, thus causing the component to fail.

2, the key work surface processing accuracy does not meet the requirements

For the cylinder, the machining accuracy of the cylinder is very high, and the surface roughness, cylindricity, and dimensional tolerances have corresponding standard requirements. The roughness of the inner wall of the cylinder barrel of some cylinders is far from meeting the requirements, so that the friction coefficient between the sealing ring of the hole on the piston and the cylinder is increased, resulting in an increase in the starting pressure of the cylinder and a crawling phenomenon; the sealing ring on the piston wears faster, Resulting in the phenomenon of internal leakage in the cylinder, which cannot meet the work requirements.

3, the design of pneumatic components did not fully take into account the corresponding conditions of use.

There are many problems that lead to the normal operation of pneumatic components. Therefore, Wuhan Xiete Valve Technology Co., Ltd. can quickly solve the above problems in the design, processing and use process, making the service life of pneumatic components significantly improved.

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    Wuhan Xiete Valve Technology Co., Ltd.Focus on all kinds of valves,Filter,Gas drainer,Throttle orifice plateIt is a professional manufacturing enterprise integrating R & D, production, sales and after-sales, with 20 years of rich experience in the industry. It owns the Xiete valve brand, builds the best R & D professional team in the industry, and has a number of independently designed and developed patented products. Provide customers with the bestValve function customization solution, and has successfully provided professional design customization services for many enterprises and institutions. At the same time, Wuhan Xiete Valve Technology Co., Ltd. has obtained ISO9001 quality system certification and TS special equipment license. Our product types, complete styles, quality assurance, factory direct sales, economical, convenient and fast to provide customers with one-stop service!

 

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