What are the components and parts of containerized mechanical seals?

What are the components and parts of containerized mechanical seals?

Container mechanical seal is a common mechanical seal widely used in various fields such as chemical, petroleum, food, and medicine. It is composed of multiple components, each of which plays an indispensable role. This article will provide a detailed introduction to the composition and components of container mechanical seals.

1、 Composition of containerized mechanical seals

1. Static ring

Static ring is an important component in container mechanical seals, which is equivalent to the stator in mechanical seals and consists of a metal ring and a non-metal ring. The static ring is responsible for preventing medium leakage and ensuring the normal operation of the seal. Static ring materials include ceramics, silicon carbide, tungsten carbide, hard alloys, etc. Static rings made of different materials also vary in terms of wear resistance, high temperature resistance, and corrosion resistance.

2. Moving ring

The dynamic ring is equivalent to the rotor in mechanical seals and is a key component to ensure sealing performance. The outer diameter of the moving ring is in close contact with the stationary ring to prevent medium leakage. The material of the dynamic ring is the same as that of the static ring, and materials with strong wear resistance, high temperature resistance, and corrosion resistance are usually selected.

3. Elastic components

Elastic components are an important part of mechanical seals, which play a role in tightly pressing the elastic force of the moving ring onto the stationary ring. Elastic components such as springs, bellows, and O-rings are commonly used in container mechanical seals. Different elastic components are suitable for different working conditions and media, and are usually selected according to the actual situation.

4. End face mechanical sealing gasket

End face mechanical seal gasket is a sealing lining plate in mechanical seals, used to fill the gap between the moving ring and the stationary ring. There are various materials for end face mechanical seals, and different gaskets are selected according to the different media. Commonly used cushioning materials include polytetrafluoroethylene, flexible graphite, elastic graphite, etc.

5. Fixed components

The fixed components include the sealing shell, sealing end cover, fixing screws, clamps, etc., used to support and fix the entire mechanical seal. The materials for fixed components are usually stainless steel, cast iron, copper, etc.

2、 Components of containerized mechanical seals

1. Mechanical seal sealing surface

The sealing surface of a mechanical seal refers to the contact surface between the moving ring and the stationary ring. Sealing surfaces usually adopt various geometric shapes and surface treatments, such as flat, spherical, conical, double conical, etc. These different shapes and processing methods can adapt to different loads, speeds, media, and operating conditions.

2. Mechanical seal spring

Mechanical seal spring is a commonly used type of elastic element, whose main function is to transmit the pressure generated between the moving ring and the stationary ring to the end face mechanical seal gasket, ensuring sealing. The selection and design of springs need to consider many factors, such as elastic modulus, jx load, fatigue resistance, opening speed, etc.

3. Mechanical seal static ring

Mechanical seal static rings are usually composed of two parts: metal and non-metal. The metal part is usually made of materials such as stainless steel and titanium alloy, and its main function is to provide mechanical strength and rigidity. Non metallic parts can be made of materials such as polytetrafluoroethylene, hard alloys, ceramics, etc., whose main function is to provide wear resistance and corrosion resistance.

4. Mechanical seal dynamic ring

The mechanical seal dynamic ring is responsible for pumping fluid into high-pressure pipelines, and its outer diameter must match the inner diameter of the static ring seal. The selection of dynamic ring materials needs to take into account the chemical properties of the medium, as well as factors such as temperature and pressure.

5. Mechanical seal sealing case

Mechanical seal cases generally use metal materials such as stainless steel, carbon steel, etc. The function of the sealing case is to connect the mechanical seal with the installation position of the pump, ensuring the stability and reliability of the seal.

The composition and components of container mechanical seals involve many materials and processes, and each part must be designed and manufactured strictly according to requirements to ensure the normal operation of the seal. When selecting and installing mechanical seals, it is necessary to choose and adjust according to the actual situation and needs to achieve the best sealing effect.