Self-heating type frost crack resistant sheath for municipal trunk protection

Abstract

The invention discloses a self-heating type frost crack resistant sheath for municipal tree trunk protection, and belongs to the technical field of municipal tree protection. The self-heating type frost crack resistant sheath effectively improves the anti-freezing protection of a main trunk and a root of a tree by arranging a trunk sheath, a root sheath and a cold-proof film, an oxidation heatinglayer is embedded in a heat storage layer, a plurality of air holes are formed in an outer cold-proof layer, and a heating expansion body is embedded in the air holes. At night, due to the fact that the temperature is low, the heating expansion body is in a non-expansion state, holes exist between the heating expansion body and the inner walls of the air holes, outside air diffuses inwards throughthe holes and makes contact with the oxidation heating layer, the oxidation heating layer emits heat, and the overall temperature of the sheath is increased, so that heat supply and cold protection are achieved for trees; and in the daytime, when the air temperature rises, the heating expansion body expands gradually to fill the whole ventilation cavity, hole closing treatment is achieved, the situation that the oxidation heating layer makes contact with air and generates heat to consume energy is effectively avoided, temperature control circulation in the daytime and at night is conducted, and the cold resistance effect on trees is effectively improved.

Description

technical field [0001] The invention relates to the technical field of municipal tree protection, and more specifically relates to a self-heating anti-freeze crack sheath for municipal tree trunk protection. Background technique [0002] In order to strengthen the development of municipal road greening, the protection of trees is particularly important. The trunk is an important part of the tree. In winter, the trunk is easy to be frostbitten, especially for the northern part of our country. The tree species suffer from freezing damage from winter to early spring, and the temperature difference between day and night is large in winter. When exposed to sunlight during the day, the temperature rises, and the trunk is dark brown, which is easy to absorb heat. The temperature of the trunk also rises quickly, and the temperature at night is very low. One cold and one hot, it is easier to crack the tree trunk. Especially for big trees, the trunk is thick, the color is dark, and t...

AI Technical Summary

Problems solved by technology

At present, the whitening of tree trunks mostly uses chemical substances, which are not good for the growth of trees themselves, and at the same time pollute the environment and waste resources. Its cold protection performance needs to be improved

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