The gear oil pump and the arc gear pump have been idle for a long time without running. When they are restarted, the gear pump seal will leak, the gear pump will be stuck, or the gear pump will be noisy. The main reasons are many aspects.
The following are two common phenomena:
1. The gear oil pump and the arc gear pump have been idle for a long time without running, and the seal of the gear pump will leak when it runs again. The main reasons are divided into two points:
(1). The mechanical seal gear pump will produce carbon deposits due to the long-term accumulation of the conveyed medium on the end face of the mechanical seal, especially when the mechanical seal pump is transporting high-viscosity materials. If the gear pump is long-term If the material is not running, it will stick to the mechanical seal. When the gear pump is started again, the mechanical end face of the gear pump will be worn and the pump will leak, and if it is serious, the mechanical seal spring of the gear pump will be broken, causing direct damage to the mechanical seal of the gear pump. .
2. For example, when the ordinary cast iron gear pump is placed for a long time, because the gear pump manufacturers generally use the waste oil in the test bench pool repeatedly when doing experiments on the gear pump, it is inevitable that there will be some water in the oil. When this part of the waste oil contains water When the oil stays in the pump cavity of the gear pump for a long time and is in contact with the gear and the pump body for a long time, the inner cavity of the gear pump will rust in a short time due to the full contact with air oxidation and other reasons, causing the gear pump to not rotate at all when it is installed and used. This situation is more common for newly installed customers. Generally, customers buy gear pumps at the local sales department, but often the gear pumps they buy are the inventory or backlog of the store owner (because they are used as gear pumps, gear pumps, etc.). Oil pump middlemen are all required to keep inventory, but the duration of the inventory is different) so remind customers to buy gear pumps or other gear oil pumps locally, they must first turn to check whether the main shaft of the gear pump rotates flexibly and evenly, so as not to buy Going back will cause unnecessary trouble.
