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PARAMETERS OF ARTIFICIAL PIPE FORMING WORKING APPARATUS
Isokova Zubayda,
doctoral candidate, Scientific Research Institute of Mechanization and Electrification of Agriculture (SRIMEA) E-mail: isakova_zulya@mail.ru
PARAMETERS OF ARTIFICIAL PIPE FORMING WORKING APPARATUS
Abstract: The article outlines results of theoretical research on parameters of working apparatus, which makes artificial pipe in the bottom of the cotton rows furrow.
Keywords: cotton, artificial pipe, pipe generator, conical angle of pipe generator, length of cylindrical part, column, distance between column and pipe generator.
Agriculture is the main consumer of existing water resources. Because of most of the crops grown in farming are grown in irrigated farming system. Rational use of existing water resources in our republic by using water-saving technologies and technologies that improve the quality of irrigation providing straight-water irrigation of crops along the furrow as well as application and implementation of modern water-saving technologies that reduce the flow of irrigation water to the river has a crucial importance. Nowadays, in our institute are lead scientific researches on justification of parameters of working apparatus, which generates artificial pipe for the irrigation of the cotton with the rows of 60 cm.
The parameters of working apparatus. In accordance with the requirements of agricultural techniques in order to achieve energy saving in formation of artificial pipe from the bottom of the cotton furrow line should be ensured flow of the water through the made pipe to the long distances.
The soil moisture content should be 17-18 percent for the formation of high quality pipes in the furrows of typical irrigated sierozem soil.
The pipe is located at a depth of 22-25 cm at the bottom of the furrow, and the flow of water through pipe should not be less than 65 m [1].
Artificial pipe generating apparatus (Fig. 1) is composed of front edge sharpened column, chisel, pulling metal rope and pipe generator. The following are key parameters that affect the quality and performance of the energy:
a - detaching angle of the chisel; lu - length of the working surface of the chisel; b - width of the chisel; 2j - sharpening angle of the front side of the column; d - diameter of the pipe generator; 2jk - conical angle of the pipe maker; lK - length of cylinder part of the pipe generator; l6 - the distance between column and pipe generator.
Figure -1. Diagram and basic parameters of artificial pipe generator working apparatus: 1 - column; 2 - chisel; 3 - pipe generator
The pipe generator of working apparatus is located at the back of the column moves, compresses the soil along the diameter during its work and forms the pipe which compacted from the sides. Based on the agricultural techniques the diam-
eter of artificial pipe should be 5 sm, according to that diameter of the pipe maker will be determined as following
d = d-, (1) k
Section 10. Technical sciences
Here, dK - pipe diameter according to agro-technical requirements, m;
k - coefficient equal to 1.06-1.1 for pipe forming working apparatus [2].
The conical angle of the pipe making working apparatus is determined that soil should not be in the working surface of that and compressing requirement of the soil in the diameter 27-33 o or between 2y^ = 54-66 o.
The length of the cylinder part of the pipe generator is dependent on the diameter of artificial pipe being formed, which can be determined by the following empirical expression [3] lK = (1,5 - 2,0K. (2)
By putting the above mentioned amount of the expression dK we will determine that length of the cylindrical part of the pipe generator should be 75-100 mm.
The column of the working apparatus and the distance between the pipe generator is determined from the condition that, by the time of going through the pipe generator the thickness of the walls formed by the chisel should be filled with slot soil, only after that complete pipe will be formed.
For this based on the diagram in the Figure 1
l6 > li (3)
here l -the distance covered by the working apparatus by the time the walls are filled with slot soil, m.
The distance covered by the working apparatus while walls filled with the compressed slot soil can be determined by the following expression
li = ^VHTi (4)
here Vm - speed of the aggregate m/s;
g - free fall speed m/s2. (4) by taking into consideration expression (4) the expression would be as following
l6 > VMJuJi (5)
It is obvious from the analysis of this expression that distance between working apparatus is dependent to the speed of the aggregate and the diameter of the pipe.
If Vm = 1.7 m/s and d= 0.05 m (5) calculations based on the expression show that distance between the working apparatus column and pipe generator should not be less than 17.16 sm.
References:
1. Kholmatova Sh. M. Effectiveness of mole pipes on combating irrigation soil erosion: Dissertation for the candidacy of agricultural sciences. - Tashkent, 1999.- 112 p.
2. Isokova Z. Kh. The honeycombs forming working apparatus for under soil irrigation of the cotton rows // AGROILM journal of Uzbekistan. 2011.- No. 3.- P. 17-18.
3. Pazova T. Kh. Technologies and means of mechanization for erosion control of slope soils in the Kabardino-Balkarian Republic: Abstract. Doctor of technical sciences. - M.: VIM. 2009. - 32 p.
