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Valve use and maintenance II
3. Butterfly valve test and installation and troubleshooting methods 1. Test and adjustment 1. The butterfly valve produced by Shanghai Yiling, whether it is manual, pneumatic, hydraulic or electric, has been strictly debugged before leaving the factory. Close the butterfly valve, apply pressure on the inlet side, and observe whether there is leakage on the outlet side. Before the strength test of the pipeline, the plate should be opened to prevent damage to the sealing pair. 2. Although this product has been strictly inspected and tested before leaving the factory, there are some products that automatically displace the screws during transportation, and need to be re-adjusted, pneumatic, hydraulic, etc. Please refer to the instruction manual of the matching drive device. 3. The opening and closing strokes of the control mechanism have been adjusted when the electric drive butterfly valve leaves the factory. In order to prevent the power from being turned on in the wrong direction, after the user turns on the power for the first time, first open the manual to the half-open position, and press the electric switch to check that the direction of the indicator plate is consistent with the closing direction of the valve. From: Shanghai Yiling Industrial Co., Ltd. - valve business.
2022-05-12
Valve use and maintenance
1. Use and maintenance of electric regulating valve With the rapid development of my country's industry, the electric control valves produced by Shanghai Yiling are more and more widely used in metallurgy, petrochemical and other fields, and their stability and reliability are becoming more and more important. Will directly affect the automatic control process, this article will elaborate on the use and maintenance of the electric control valve. For the newly designed and installed control system, in order to ensure that the regulating valve can work normally when starting up and make the system operate safely, before installing the new valve, check whether the nameplate on the valve conforms to the design requirements. The following items should also be debugged. Basic error limit; full stroke deviation; hysteresis; dead zone; leakage (in the case of strict requirements). If the control valve in the original system is overhauled, in addition to checking the above items, the sealing of the stuffing box and joints of the old valve should also be checked. out of the law
Installation and debugging of butterfly valves and troubleshooting methods for common faults
1. Installation test and adjustment: 1. All parts of this product, whether manual, pneumatic, hydraulic or electric, have been strictly debugged before leaving the factory. When re-checking the sealing performance, the user should evenly fix both sides of the inlet and outlet, close the butterfly valve, and apply pressure to the inlet side. , Observe whether there is leakage on the outlet side. Before the strength test of the pipeline, the disc plate should be opened to prevent damage to the sealing pair.
Getting Started in One Minute What is the purpose of the adapter valve on the tractor?
[Reprinted from Truck Home, Invasion and deletion] The adaptation valve was first applied to the model with the front disc and the rear drum. Since the disc brake has the characteristics of automatic slack adjustment, the earlier transaxles used non-automatic brake slack adjustment arms. In order to solve the problem that the front brake is too sensitive when the front disc and rear drum type vehicles are braked due to the increased braking clearance, an adaptive valve is installed on the front axle braking system for adjustment.
Gear manufacturers analyze why noise occurs when gears mesh
Gear machining is mainly a process in which the specific structure and precision of the gear are obtained by mechanical methods. Noise sometimes occurs during the machining process. The gear noise is mainly caused by the vibration caused by the meshing collision between the gears. out the sound.
Introduction of Mesh Impact in Gear Transmission
When a pair of gears is processed, when meshing, the teeth of the gears will generally deform elastically after being subjected to force, which will have a certain impact on the meshing of the gears. When the teeth of the two gears mesh, the previously meshed gear The load force of the teeth is usually relatively reduced, and they deform back toward the load position, thereby giving the gear an acceleration.
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