In building drainage systems, the height of the water seal has a significant impact on the performance of the system.
If the height of the water seal is too high, solid impurities present in the wastewater can settle more easily at the bottom of the siphon, thus blocking the pipe. At the same time, too large a hydraulic seal can weaken the impact of the gas in the pipeline on the indoor environment, but it may also cause the hydraulic seal to be easily broken. If the height of the hydraulic seal is too small, the gas in the pipe may exceed the hydrostatic pressure of the hydraulic seal and enter the room, thereby polluting the environment. Especially when sanitary fixtures without a trap in the structure are connected to sanitary sewer pipes or other drainage pipes that may produce harmful gases, if the depth of the water seal of the trap is too small, the balance of theThe entire drainage system may be broken.
Therefore, when designing and maintaining the building drainage system, the height of the water seal should be reasonably selected according to the actual situation to ensure the normal operation of the system and indoor hygiene. environment.
Symptoms of a broken water seal in a drum washing machine
The water pump shaft is worn, causing damage to the water seal.
The steel material used for conventional shaft coupling bearings of water pumps (including shafts, outer rings and steel ball rollers) is bearing steel made of high carbon chromium (GCr15). Since high-quality bearing steel is melted by vacuum deoxidation and electromagnetic stirring, and contains less oxide, it can withstand large contact compressive stresses and at high variable tensile stresses. After heat treatment, the hardness of the shaft raceway can be improved. -62HRC. The hardness of the outer ring raceway is 60-64 HRC, and the hardness of the steel balls and rollers is 61-65 HRC. When the shaft and outer ring are made of case-hardened bearing steel, the hardness of the raceway is 60-64HRC. The cage material is usually reinforced nylon 66 and the seal ring material is usually nitrile rubber. Where requirements are higher, fluoro rubber sealing rings can also be used.
1. The first type of fault is common in drum washing machines, that is, the washing machine makes too much noise when spinning or washing. The main reason for this phenomenon is that. The hydraulic seal of the drum washing machine is leaking. This causes water to flowon the inner and outer bearings of the drum washing machine, causing the washing machine bearings to rust and loosen. If it happens to the washing machine, it does. It is necessary to remove the inner drum of the washing machine and replace the hydraulic seal and bearings. Generally, the washing machine has been used for more than 6 years. There is a high probability that this failure will occur. The washing machine tripod will crack and the inner cylinder will no longer be able to rotate. When replacing the water seal, you need to add butter to make it tighter. Typically, fully automatic washing machines will also make noise, but this is mostly the case. caused by the damage to the four suspension springs of the washing machine and the noise caused by the inner drum of the washing machine hitting the outer shell.
2. The second fault is that the machine washing machine does not work, which usually means that it does not work after the water enters, or it does not work after draining the water. What needs to be confirmed is whether the engine is good. A common symptom is that as long as the washing machine can be washed after being filled with water, or the machine can be dried after being drained, as long as a washing machine motor is running. In this situation, it means the washing machine motor is good and the remaining situation is that the computer board is more likely to be broken., the probability of computer board damage is about 90%. , and the remaining 10% is estimated that the water level switch is damaged, which will prevent the washing machine from working.
3. The third flaw is that after the washing machine spins, the clothes cannot be dried and water remains. This situation often occurs in thes drum washing machine. the shock absorption of the drum washing machine, causing the drum to spin. The washing machine cannot run at high speed when spinning. If the washing machine cannot run at high speed, naturally it will not be able to spin the clothes. You just need to replace 2 washing machine shock absorbers to resume the operation of the washing machine. It is also possible that the weight of the clothes exceeds the wash weight of your washing machine, so the washing machine's load is too large and it cannot run at high speed for drying.