Application of gas smooth non-touch mechanical seals

Source: China Bearing Network Time: 2014-10-24

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The mixer uses gas smooth non-touch mechanical seals (low speed) for sale on the market; it has been more than 10 years. In this 10 years; has now obtained a series of experience. This article summarizes some important insights. When properly applied to the right purpose; the mixer gas seal can help the user to improve the quality and improve the purity of the product.
When you are commenting on mechanical seals; it is important that you understand the differences between the various seal systems. There are three basic types: fluid smooth mechanical seals, gas smooth touch mechanical seals, and disengaged or Said gas smooth non-touch mechanical seals.
The difference is that there is a fluid between the sliding surfaces of the fluid-smooth seals. As a result, these seals are generally used in mixers where mixing conflicts are used. For dry-running seals; the two sliding surfaces touch each other directly Touch. On the other hand; on the gas smooth non-touch mechanical seal; in operation, its sliding appearance is not straight touch. There is an empty space of 1 ~ 5Î¼m wide to separate the appearance; this is why this seal is generally called For the reason of the release seal. When you mention the gas damped double seal; there should be this difference. Starting from this point; below we will only comment on the gas smooth non-touch mechanical gas seal.
How does the gas seal work? In the work; there should be a layer of open space between the two sliding appearances with a few m; in order to attack the open space; the two sliding surfaces should be separated from each other by touch. To accomplish this; a three-dimensional groove is made on one ring It ensures the static and dynamic effects of the air. The pressure difference at the seal is an aerostatic effect; and the aerodynamic effect of the spin is balanced with the force of the closing force; then it constitutes 1~ 5m wide sealed open space.
The use of gas seals on mixers to apply gas seals on mixers has three primary strengths for the operator:
â– No liquid leakage,
â– has no effect on product quality,
â– Little or no impact on the response,
This seal also has other strengths. It contains:
â– Operational hygiene (GMP),
â– The conflict is low,
â– No noise,
â– Mechanical wear is small or not worn.
If the sealing system applied to the mixer is suitable for the above requirements; then the sealing parts are used together.
What was the primary use of the mixer at that time (low speed)?
â– DIN mixer for steel containers with seals for DIN requirements,
â– DIN mixer for tantalum containers with seals conforming to DIN specifications,
â– Mixer for disinfection purposes,
â– Straight suction filter / dryer,
â– Special use (horizontal device on the product).
In terms of pressure; this seal is generally used in vacuum conditions; up to 6 bar.
In the past 10 years; since the seal was first introduced to low-speed use; has gained a lot of experience. The unique is that the user is in the learning period; has now obtained a number of important insights. According to a part of the mechanical seal users 40 years of experience in the use of liquid smooth seals; has been made very clear; differences and application constraints should still be recognized and ruled. Not every product that uses liquid seals is suitable for gas seals. The first thought is about the high sensitivity of the product elements (for example; the seal is touched). To counteract this effect; many different parts have been studied and applied; such as the patented flushing device flange. When the alignment characteristics are degraded; the gas is converted to gas by itself; the sealed surface is blown off or washed clean. This flushing device can be used for steel containers; it is uniquely used for tantalum containers (plastic containers). In addition to the use of gas seals Beyond the experience gained; a series of new insights in storage and use. When the seals complete its initial innovation Between the shipment and the beginning of the use of seals; can go through many years. Together; various factors can affect the characteristics of gas seals. In the installation accidentally added too much smooth grease or smooth smooth oil Grease or smooth oil may have penetrated into the sealed open space. It is then in use; this creates an imbalance in the open space; the seal is damaged; according to its experience; the seal is used before its opening; it should be inspected If the storage period is too long, aging will also affect the artificial rubber.

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