The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
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During the growth of flowers, due to the lush growth of the foliage, a large number of flowering results, consume a lot of nutrients, need to add fertilizer at any time, this is called top dressing. Most of the topdressing is based on liquid fertilizer, which is beneficial to soil absorption and root utilization.
Topdressing can apply both inorganic fertilizers and organic fertilizers. Inorganic fertilizers must pay attention to the appropriate concentration, usually 0.1~0.5%, so as to avoid the harm caused by excessive concentration; organic fertilizers must be fully decomposed, and the principle of “small meals†should be mastered.
Huaxian County Fertilizer Station Yue Xiuli
Usage and dosage of flower base fertilizer and top dressing
The fertilizer applied to the soil before planting or above the pot is called base fertilizer, generally dry powder, such as poultry manure, bone meal, bean cake, etc. It is required to have more nitrogen, phosphorus and potassium components, which is beneficial to improve soil structure. And can continue to decompose to ensure the constant need during the long growing period. The base fertilizer must be decomposed. When planting flowers, it should be applied under or around the roots, but it should not be in direct contact with the roots. When the potted plants are used, they should be determined according to the type of flowers. The base fertilizer is the basic nutrient for flower growth and should be taken seriously.
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