Valve maintenance in the maintenance work this is very important!
Date:2023-08-26 Click:586
Valve is an important mechanical base part, is the control part of the fluid conveying system, with opening and closing function, regulation function, throttling function and other functions and effects.
Valve product types and specifications are more, widely used, and the working environment is different. Therefore, the daily maintenance of the valve is very important.
01 Valve drive maintenance
First of all, do a good job of valve transmission maintenance.
Valve transmission device is the main part of the valve to play a role, but also the most prone to failure.
Part of the valve is always in the fully open or fully closed state when working, only a single state change when necessary, the transmission device damage is light, wear speed is slow.
Some valves that control key parts need to frequently replace the opening and closing state, and the transmission device will wear under long-term operation, and the degree of wear varies according to the number of opening and closing.
Therefore, when the valve is installed, it is necessary to grease the key parts to play a lubricating role and reduce the wear of the transmission device.
In the regular maintenance of the valve, we must first check the degree of damage to the valve transmission device, determine whether it needs to be replaced, and supplement the insufficient grease.
In addition, long-term operation will make the valve temperature rise, high temperature will speed up the evaporation of internal grease, increase the valve damage speed, the necessary water bath cooling measures, but also to ensure that the valve transmission device lasting operation, reduce the incidence of failure is an important means.
If the pipeline is transported with a strong corrosive liquid, etc., the maintenance period of the valve transmission device should be appropriately shortened to avoid high corrosion to accelerate the aging of the valve transmission device, causing major failures.
02 Valve grease precautions
Frequent operation of the valve is very dependent on the lubrication of grease, too much grease will make the valve too sensitive, not conducive to fine control, and too little grease will make the operation of the valve appear difficult, increase the loss of internal parts and power waste.
Therefore, the selection of high quality grease is particularly important.
Enterprises should strictly follow the national and enterprise standards to buy reliable quality grease.
When the valve is regularly maintained, the amount of grease required by the valve parts should be carefully measured, too much or too little will affect the normal operation of the valve.
The grease injection pressure should be considered during valve grease injection
During the grease injection operation, the valve grease injection pressure should be always paid attention to, and the pressure should be regularly peak-valley. Grease injection pressure is too high, grease injection mouth is easy to block, high pressure hardening of grease to lose lubrication; Too low pressure will cause the valve seal component to fail.
03 Maintenance of valve packing
The packing inside the valve is the material to ensure the air tightness of the valve, and the lack or failure of the packing will directly affect the tightness of the valve, resulting in the loss of the valve.
The transportation of materials in the pipeline will also affect the aging rate of the packing in the valve, in addition, the high temperature brought by long-term operation can also accelerate the loss of the valve packing.
In the process of daily maintenance, it is necessary to detect the valve packing and fill it in time to ensure that the packing has good elasticity in the valve.
In the process of use, it is necessary to do a good job of valve packing maintenance in advance, check whether there is leakage, and tighten the screws around in time to prevent the leakage of packing.
Some valve packing will add a certain amount of grease, so that it will play a better lubrication and protection role with the use of the valve, and the grease inside the packing should be filled during maintenance.
Valve product types and specifications are more, widely used, and the working environment is different. Therefore, the daily maintenance of the valve is very important.
01 Valve drive maintenance
First of all, do a good job of valve transmission maintenance.
Valve transmission device is the main part of the valve to play a role, but also the most prone to failure.
Part of the valve is always in the fully open or fully closed state when working, only a single state change when necessary, the transmission device damage is light, wear speed is slow.
Some valves that control key parts need to frequently replace the opening and closing state, and the transmission device will wear under long-term operation, and the degree of wear varies according to the number of opening and closing.
Therefore, when the valve is installed, it is necessary to grease the key parts to play a lubricating role and reduce the wear of the transmission device.
In the regular maintenance of the valve, we must first check the degree of damage to the valve transmission device, determine whether it needs to be replaced, and supplement the insufficient grease.
In addition, long-term operation will make the valve temperature rise, high temperature will speed up the evaporation of internal grease, increase the valve damage speed, the necessary water bath cooling measures, but also to ensure that the valve transmission device lasting operation, reduce the incidence of failure is an important means.
If the pipeline is transported with a strong corrosive liquid, etc., the maintenance period of the valve transmission device should be appropriately shortened to avoid high corrosion to accelerate the aging of the valve transmission device, causing major failures.
02 Valve grease precautions
Frequent operation of the valve is very dependent on the lubrication of grease, too much grease will make the valve too sensitive, not conducive to fine control, and too little grease will make the operation of the valve appear difficult, increase the loss of internal parts and power waste.
Therefore, the selection of high quality grease is particularly important.
Enterprises should strictly follow the national and enterprise standards to buy reliable quality grease.
When the valve is regularly maintained, the amount of grease required by the valve parts should be carefully measured, too much or too little will affect the normal operation of the valve.
The grease injection pressure should be considered during valve grease injection
During the grease injection operation, the valve grease injection pressure should be always paid attention to, and the pressure should be regularly peak-valley. Grease injection pressure is too high, grease injection mouth is easy to block, high pressure hardening of grease to lose lubrication; Too low pressure will cause the valve seal component to fail.
03 Maintenance of valve packing
The packing inside the valve is the material to ensure the air tightness of the valve, and the lack or failure of the packing will directly affect the tightness of the valve, resulting in the loss of the valve.
The transportation of materials in the pipeline will also affect the aging rate of the packing in the valve, in addition, the high temperature brought by long-term operation can also accelerate the loss of the valve packing.
In the process of daily maintenance, it is necessary to detect the valve packing and fill it in time to ensure that the packing has good elasticity in the valve.
In the process of use, it is necessary to do a good job of valve packing maintenance in advance, check whether there is leakage, and tighten the screws around in time to prevent the leakage of packing.
Some valve packing will add a certain amount of grease, so that it will play a better lubrication and protection role with the use of the valve, and the grease inside the packing should be filled during maintenance.
