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The main reason for the improper removal of the rubber of the stator rubber of the screw pump is caused by improper selection of the inner surface of the bonded pump casing or unclean inner surface.
1. The main reason for the improper selection of the rubber for the stator rubber of the screw pump is that the inner surface of the bonded pump casing is improperly treated or the inner surface is dirty.
2. The main reason for the loss of the stator rubber of the screw pump is that the hardness of the selected rubber is too large, the “over sulfur†when the rubber is vulcanized, the “early vulcanization†of the rubber or the excessive interference of the stator and the rotor.
3. The reason why the stator rubber of the screw pump is not wear-resistant is that the screw pump mostly transports the medium containing impurities, and the tensile strength of the rubber stator is much lower than the compressive strength. Once the hard particles are embedded, the hard particles embedded in the rubber are subjected to the rotor. Under the action of the rotating tension, the surface of the stator will be stretched and deformed so that the molecular chain breaks beyond the strength of the molecular chain, so the stator cracks, expands and breaks. In addition, the stator is subjected to hard particle cutting during pump operation, and the resulting wear is also an important cause of stator damage. Therefore, it is especially important to choose the right compound. If the selection is not appropriate, the stator is more likely to wear.
In addition to the unreasonable formula of rubber compound, the rubber content is too low, and the hardness of rubber is not properly selected, the interference unevenness or interference of the stator and rotor is too large, the medium is bad or the rubber is aging, etc. the reason.
4. The main reason for the shape deformation of the screw tooth shape of the screw pump is that the rubber has poor compression set resistance, the production process control of the pressed rubber has problems, the vulcanization is insufficient, the shape of the stator core for pressing is not accurate, and the stator core is placed eccentrically during pressing. , the surface quality of the stator core or the poor quality of the surface of the stator cavity rubber.
The first condition to ensure the quality of the rubber stator is to select the rubber type correctly according to the working conditions and media conditions. When saving the stator to avoid sun exposure, or minus 20 ℃ contacting other high temperature environment, as well as dust or oil contamination and corrosive media, but also pay attention not expired avoid aging storage (typically plastic types according to one year storage period of six months ).
5. The volume of the stator core of the screw pump The rubber stator must know the amount of rubber required to press a stator when injecting the rubber. That is to say, the volume of the spiral cavity in the stator, that is, the volume of the stator core. It is very difficult to calculate its volume accurately and it is not necessary. Therefore, an approximate method can be used to calculate. When pouring, it is necessary to consider additional materials such as gates and risers to add some margin. can. Http://NewsDetail310T2.htmlChina Hardware Business Network http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
We diviided the led light according to the using eviiroment. Most of our product is the commercial LED Lighting
Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
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