Are there any consequences if the oil leakage observation hole under the plunger pump body is artificially blocked?
Thread Content
A plunger pump from Dalian Riva, the diaphragm assembly is connected to the plunger, and there is no hydraulic oil or anything. Now the oil seal of the plunger is broken, and it is constantly leaking from the hole under the pump body. But the embarrassing thing is that the oil seal spare parts have not been implemented in time, and the technology does not allow the pump to be stopped. The amount of oil leakage is now very large, and the oil needs to be replenished within a day. I am really worried that the transmission part will be burned out due to lack of oil. I now plan to find a way to plug the oil leakage hole (red circle part) at the bottom, so that when the cavity is full of leakage, the oil level in the tank will not drop, and at most it will flow to each other. I don’t know if this is feasible as a short-term temporary measure. I think there is no problem because this part is under normal pressure and does not involve materials. If the diaphragm is made of PTFE and is soaked by oil, there should be no problem. What do you think?
Is it not okay to use the pipe under the hole to drain the water into the container for recycling?
It's a good idea, but the one below has a plain hole without threads. If you want to add a connector to the connection, you have to tap it. In addition, the only way to drain the water back to the fuel tank is to remove the breathing cap, which is not good either.
Dear, do you feel that the flow can flow back from the breathing cap?
Collect the flow into a bucket and pour it back regularly, or keep it for other uses.
This post was last written by blade_wzy on 2019-1-23 13:34 The editor made a mistake and thought it was flowing directly back to the fuel tank. Collecting actually doesn't make much sense. Now it's not a matter of waste, but an inability to control the drop in tank level that can easily cause equipment damage. Hourly inspections and refueling are required, but the effect is limited, right? Things controlled by people are the most unreliable, as anyone who works on equipment understands.
Constant-level oil cup with sight glass, the oil level is adjustable, and the oil cup capacity is larger.
The problem should not be serious in the short term. Please hurry up and prepare spare parts. Be prepared with both hands.
Is this used for ventilation when the diaphragm moves? If it's you, it's best not to block it. You can directly connect a pipe and fix it vertically with an iron wire. Once the oil level rises to the same level as the oil tank, it will stop rising. The fluid may rise and fall due to the pressure difference due to the reciprocating movement of the diaphragm, but this way the oil pressure in your oil tank will not be affected by the blockage, causing it to increase the wear of the oil seal and prevent oil loss.
This post was last written by blade_wzy edited on 2019-1-23 19:17 You are right, it is indeed used for ventilation. Because the volume of the cavity will continue to change when the plunger drives the diaphragm, suction and exhaust must be carried out through this hole. The original idea was that since the plunger oil seal has been severely worn, the oil should be used to breathe. The fuel tank already has a breathing valve, so it doesn't matter if the vent hole is blocked. I consulted the manufacturer and was non-committal, but after thinking about it I decided not to. But now the scene has been perfectly solved. I found a slightly smaller plastic hose, applied some quick-drying glue and inserted it into the hole for a while to fix it. It will not leak under normal pressure. Then I watched the oil keep moving back and forth along the hose but still moving forward slowly, so I simply removed the fuel tank breathing cap and inserted the other end directly into it. After a while, it was confirmed that the oil continued to drip back into the fuel tank, so that the oil level in the fuel tank was basically balanced, and I felt relieved. Why the oil can flow upward back to the tank? My personal judgment is that the pressure exerted on the cavity by the forward and backward movement of the plunger due to the shape of the oil seal and the weight of the oil is unbalanced. The positive pressure when the plunger compresses backward is always slightly greater than the negative pressure when it expands forward. Therefore, continuous positive pressure can be given to the oil to flow back smoothly. In short, blocking is worse than sparing, which is the truth!