Guide Ring is a mechanical seal, also known as a guide ring. It is usually made of metal or plastic and used to support and position pistons or rods. Guide Ring has excellent wear resistance and corrosion resistance, which can effectively reduce leakage and friction, thereby extending equipment life. Guide Ring is widely used in the hydraulic, pneumatic, mechanical, and automotive industries as an important mechanical seal.
The classification of Guide Ring can be divided by material, structure, and purpose. According to material classification, Guide Rings are mainly divided into metal Guide Rings and plastic Guide Rings. Metal Guide Rings are usually made of metals such as copper, iron, and stainless steel, which have high strength, wear resistance, and high-temperature resistance; The plastic Guide Ring is usually made of polytetrafluoroethylene (PTFE), nylon, polyimide and other materials, with good corrosion resistance and low friction coefficient.
According to structural classification, Guide Rings are mainly divided into unidirectional Guide Rings and bidirectional Guide Rings. A unidirectional guide ring can only withstand pressure in one direction and is typically used in hydraulic and pneumatic systems; The bidirectional guide ring can withstand bidirectional pressure and is typically used in the mechanical and automotive industries.
According to usage classification, Guide Rings are mainly divided into piston Guide Rings and rod Guide Rings. The piston guide ring is usually used to support and position the piston, preventing friction and leakage between the piston and the cylinder liner; The rod guide ring is used to support and position the rod, preventing friction and leakage between the rod and the seal.
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Fruit cracking is a common problem that occurs when cherries are approaching maturity or during rainy weather before harvest. This issue causes significant losses for farmers every year. Currently, the methods used to prevent cracking—such as spraying minerals and hormones—have limited effectiveness. Selecting resistant cherry varieties is a better solution, but there is still no high-resistance variety widely available. Some farmers flood their orchards with water a day before rain, which can reduce cracking by up to 30%. However, due to the difficulty in accurately predicting weather changes, many Chinese farmers struggle to implement this technique effectively.
Another method used during the blooming period is tree stripping, which has shown promising results in preventing cracking. However, this approach can be risky if the trees have too many fruits or are weak, leading to excessive sap flow and potential damage to the trees.
To address these challenges, building a simple shelter for cherry trees has emerged as an effective and cost-efficient solution. The average cost per mu (about 667 square meters) is only around ¥1,500. The technology is straightforward and easy to use, and the structures can last for several years. After 2 to 3 years, the protective film can be replaced at a cost of ¥200 to ¥300. For most fruit farmers, this investment is comparable to the current market value of cherries. More importantly, it allows for zero percent fruit cracking at a low cost, making it a highly attractive option.
The construction of large cherry shelters not only helps reduce fruit cracking during maturation but also ensures stable income for farmers. Additionally, it significantly reduces bird damage. In regions where early spring frost is a concern, shelters can also act as a protective measure against cold damage. In southern China, where heavy rainfall makes cherry cultivation difficult, combining shelter systems with awning planting opens up new possibilities for growing cherries in rainy areas.
This innovative approach offers a sustainable and practical solution for cherry farmers, helping them adapt to changing environmental conditions while improving productivity and profitability.