Compressor Valves Common Maintenance Knowledge Valves are components that require regular maintenance and replacement. The life and maintenance cycle depends on many factors:
1 Use of the compressor (process compressor or maintenance compressor)
2 The working system of the compressor (continuous or intermittent)
3 Compressor speed, pressure, compression ratio, and gas properties (corrosive and non-corrosive, with or without gas filtration device) At the same time, the compressor manufacturer will also give corresponding maintenance and repair requirements.
The following are the steps for valve maintenance:
1. Remove the gas valve from the compressor
2. Disassembly of valve
3. Cleaning parts
4. Check the working condition of the valve, in particular: the sealing surface (valve seat), valve plate, spring position
5. Repair and replace worn parts
6. Assemble the gas valve 1. Remove the gas valve from the compressor. Suggestions and Warnings: Must follow the manufacturer's shutdown and demolition requirements First of all, after the shutdown, confirm that the pressure in the cylinder and pipeline has been released, ie, the gauge pressure is zero. If the medium is flammable and explosive gas and toxic and harmful gas, the cylinder and piping must be purged with inert gas. At the same time, people are on guard at the scene to ensure that the machine will not be started.
When disassembling the gas valve, use a special valve removal tool when you find that the valve is trapped in the valve socket. When you find that the valve is stuck, use wood or a soft metal rod and tap the valve from the side. To avoid damage to the gas valve, it is absolutely forbidden to tap the gas valve directly with the hammer. 2. After the gas valve disassembles and cleans the center bolt, use a special fixture to fix the gas valve so as to prevent the gas valve from rotating relatively when loosening and tightening the nut. Especially when disassembling the open air valve, the valve seat of the intake valve and the valve cover of the exhaust valve should be fixed to prevent the valve from rotating relative to the internal fixed pin.
Third, cleaning all components with a soft brush to clean the parts, in particular, to carefully remove the seat, valve cover each groove in the dirt to ensure the flow area. Do not clean the seat and cap with wire brushes or sharp tools.
Fourth, check all parts Fifth, repair and replace the damaged parts a. Valve: Although the valve is allowed to have a maximum 10% of the amount of wear, but found that the valve or buffer sheet damage, even if there is no break must be replaced. Do not re-grind or turn over the valve.
b. Spring: When an individual spring is found to be worn, not only this spring but also all other springs must be replaced to prevent the worn springs from being embedded in other spring holes, affecting the performance of the valve.
c. Seat: The flat and non-defective surface of the seat ensures that the valve is leak-free and efficient. Therefore, any damage to the seat surface must be immediately reworked and ground.
First of all, if it is convenient to remove the fixing pin, usually depending on the degree of wear, choose how to reprocess it. If the seat surface is only slightly damaged, it can be hand-ground. However, if the surface is badly damaged and there is a pit, it needs to be machined with a lathe and it must be ground with a grinder. It should be reminded that the reworked valve on the seat surface must be replaced with a new valve to ensure that the next problem is due to remachining of the sealing surface of the seat or after grinding. Make the seat sealing surface widen. This will cause the sealing effect to decrease. Therefore, when re-machining the valve seat sealing surface, we have a set of strict specifications to operate under the premise of ensuring the strength of the seat, the sealing effect and the overall performance of the valve.
Six, assembly valve:
When assembling the gas valve, install it in the order shown in the assembly drawing. When tightening the nut (tweener wrench is recommended), always keep the relative rotation between the valve seat and the valve cover, otherwise it will easily cause the valve fixing pin to shear and make the valve Failure.
When using a self-locking nut, add a small amount of oil or grease.
Do not use any oil on the oxygen valve, otherwise it will cause an explosion.
1 If the intake valve is equipped with an unloader, check the gap between the unloader fork and the valve plate after assembly, the clearance between the unloader and the actuator push rod 2 Check whether the valve plate can move freely 3 In the load Before the cylinder, clean the valve housing and the valve cover 4 Never mount the wrong intake and exhaust valves. Never install the anti-exhaust valve. 5 The valve should be installed in the correct position and fastened to prevent valve seat breakage. After the air valve is installed in the cylinder, the piston is pulled one week to prevent any interference. In short, valve maintenance is a highly technical work. Must be conducted under the guidance of experienced professionals, preferably by a professional company.
1 Use of the compressor (process compressor or maintenance compressor)
2 The working system of the compressor (continuous or intermittent)
3 Compressor speed, pressure, compression ratio, and gas properties (corrosive and non-corrosive, with or without gas filtration device) At the same time, the compressor manufacturer will also give corresponding maintenance and repair requirements.
The following are the steps for valve maintenance:
1. Remove the gas valve from the compressor
2. Disassembly of valve
3. Cleaning parts
4. Check the working condition of the valve, in particular: the sealing surface (valve seat), valve plate, spring position
5. Repair and replace worn parts
6. Assemble the gas valve 1. Remove the gas valve from the compressor. Suggestions and Warnings: Must follow the manufacturer's shutdown and demolition requirements First of all, after the shutdown, confirm that the pressure in the cylinder and pipeline has been released, ie, the gauge pressure is zero. If the medium is flammable and explosive gas and toxic and harmful gas, the cylinder and piping must be purged with inert gas. At the same time, people are on guard at the scene to ensure that the machine will not be started.
When disassembling the gas valve, use a special valve removal tool when you find that the valve is trapped in the valve socket. When you find that the valve is stuck, use wood or a soft metal rod and tap the valve from the side. To avoid damage to the gas valve, it is absolutely forbidden to tap the gas valve directly with the hammer. 2. After the gas valve disassembles and cleans the center bolt, use a special fixture to fix the gas valve so as to prevent the gas valve from rotating relatively when loosening and tightening the nut. Especially when disassembling the open air valve, the valve seat of the intake valve and the valve cover of the exhaust valve should be fixed to prevent the valve from rotating relative to the internal fixed pin.
Third, cleaning all components with a soft brush to clean the parts, in particular, to carefully remove the seat, valve cover each groove in the dirt to ensure the flow area. Do not clean the seat and cap with wire brushes or sharp tools.
Fourth, check all parts Fifth, repair and replace the damaged parts a. Valve: Although the valve is allowed to have a maximum 10% of the amount of wear, but found that the valve or buffer sheet damage, even if there is no break must be replaced. Do not re-grind or turn over the valve.
b. Spring: When an individual spring is found to be worn, not only this spring but also all other springs must be replaced to prevent the worn springs from being embedded in other spring holes, affecting the performance of the valve.
c. Seat: The flat and non-defective surface of the seat ensures that the valve is leak-free and efficient. Therefore, any damage to the seat surface must be immediately reworked and ground.
First of all, if it is convenient to remove the fixing pin, usually depending on the degree of wear, choose how to reprocess it. If the seat surface is only slightly damaged, it can be hand-ground. However, if the surface is badly damaged and there is a pit, it needs to be machined with a lathe and it must be ground with a grinder. It should be reminded that the reworked valve on the seat surface must be replaced with a new valve to ensure that the next problem is due to remachining of the sealing surface of the seat or after grinding. Make the seat sealing surface widen. This will cause the sealing effect to decrease. Therefore, when re-machining the valve seat sealing surface, we have a set of strict specifications to operate under the premise of ensuring the strength of the seat, the sealing effect and the overall performance of the valve.
Six, assembly valve:
When assembling the gas valve, install it in the order shown in the assembly drawing. When tightening the nut (tweener wrench is recommended), always keep the relative rotation between the valve seat and the valve cover, otherwise it will easily cause the valve fixing pin to shear and make the valve Failure.
When using a self-locking nut, add a small amount of oil or grease.
Do not use any oil on the oxygen valve, otherwise it will cause an explosion.
1 If the intake valve is equipped with an unloader, check the gap between the unloader fork and the valve plate after assembly, the clearance between the unloader and the actuator push rod 2 Check whether the valve plate can move freely 3 In the load Before the cylinder, clean the valve housing and the valve cover 4 Never mount the wrong intake and exhaust valves. Never install the anti-exhaust valve. 5 The valve should be installed in the correct position and fastened to prevent valve seat breakage. After the air valve is installed in the cylinder, the piston is pulled one week to prevent any interference. In short, valve maintenance is a highly technical work. Must be conducted under the guidance of experienced professionals, preferably by a professional company.
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