Sealed lifting column

Abstract

The invention relates to a sealing lifting type lifting column which can effectively solve the problems that a telescopic pipe is poor in leakproofness, serious in water leakage and poor in retraction effect. According to the technical scheme, the lifting column comprises a base and a telescopic pipe installed on the base, the telescopic pipe is of a length-adjustable telescopic structure formed by multiple sections of circular hollow pipes with different diameters in the mode that the previous section is compressed in the next section, a slidable seal ring used for sealing is arranged between the outer side of a sliding base of each inner-side circular hollow pipe and the inner wall of the corresponding outer-side circular hollow pipe, and each slidable seal ring comprises a first Y-shaped seal ring body which is located on the upper portion and provided with an upward opening and a second Y-shaped seal ring body which is located on the lower portion and provided with an downward opening. The sealing lifting type lifting column is novel and unique in structure, simple, reasonable, easy to produce, low in cost, good in leakproofness, high in retraction speed, capable of saving energy and water, convenient to use and good in effect and has good social and economic benefits.

Description

technical field

[0001] The invention relates to a sprinkling device for irrigation, in particular to a lifting column for a multifunctional irrigation and fertilization system. Background technique

[0002] Agriculture is an important basic industry in our country. The traditional method of irrigation and fertilization is manual, which is time-consuming and labor-intensive, and the efficiency is low. Using advanced facilities and technologies, it is the most important thing for our country to shift from "depending on the sky" to large-scale automated production. In the direction of agricultural development, there are many irrigation and fertilization equipments on the market. However, due to their structural problems, the cost of the equipment is high and the functions are few. It is very inconvenient and the effect is unsatisfactory. Therefore, the applicant has applied for a "multifunctional irrigation and fertilization system" with the application number "201320400678.X"....

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