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03

2020

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03

The difference between piston rod seal and piston seal should not be confused

There is a word difference between the piston rod seal and the piston seal, but the effect is very different. The difference between the piston seal and the piston rod seal is also a necessary knowledge of the piston rod. Before understanding this problem, in order to facilitate understanding, we first look at what is the piston and the piston rod.


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     Piston rod sealThere is a word difference between the two and the piston seal, but the effect is very different. The difference between the piston seal and the piston rod seal is also a necessary knowledge of the piston rod. Before understanding this problem, in order to facilitate understanding, we first look at what is the piston and the piston rod.

First of all, the piston is a reciprocating part in the cylinder block of an automobile engine. The piston rod is a connecting part that supports the work of the piston. Most of it is used in the motion execution parts of the oil cylinder and the cylinder. It is a moving part with frequent movement and high technical requirements. These are relatively easy to distinguish for the relevant industry.

     



Piston rod sealThe groove is opened on the hole, and the piston rod sealing ring refers to the seal between the piston rod and the cylinder head. If the seal is not good, oil will leak. The sealing groove of the piston is opened on the piston. The piston sealing ring refers to the seal between the cylinder and the piston. Poor sealing will affect the performance of the cylinder. The sealing groove is opened on the hole to seal the rod, that is to sayPiston rod sealIt is a sealing ring for the shaft; the sealing groove is sealed on the shaft, that is to say, the piston seal is a sealing ring for the hole. So the biggest difference between the two is that the piston rod sealing ring is a hole sealing ring, and the piston sealing ring is a shaft sealing ring.

In addition, the piston rod seal stuffing box consists of a series of sealing rings, each sealing ring on the piston rod, to achieve the sealing effect. Each ring acts to prevent or restrict the flow of gas into the atmosphere or the isolation chamber, and each set of sealing rings is installed in a separate packing box. The sealing principle of the piston ring and the stuffing box are the same. In general compressors, the sealing requirements of the piston ring are not as strict as the stuffing box, allowing a certain amount of leakage. Therefore, there are some differences in the structure of the two.

Key words:

Piston rod seal