The article presents the results of optimization of the
angle of inclination and pitch of the cutting segment,
the frequency of rotation of the screw when cutting
stems of crops of different biometric characteristics of
the proposed screw cutting device
Based on the analysis of the designs of feed mixers for farm animals, the option of using a two-stage mixer is being investigated. The proposed design of the mixer allows you to improve the quality of the feed mixture and reduce energy costs per process. To optimize the mixing workflow, the design parameters of the machine and their influence on the technological process under various working conditions are determined. It has been established that the design of the mixer and the initial physical and mechanical properties of the components of the feed mixture directly affect the most important technological characteristic of the installation, its performance. Therefore, the study aims to optimize the process of mixing feed
We present results on proving parameters of the device for maintaining uniform flow of liquid in hydraulic row sowing machine for seedling plants. Main difference between row sowing in greenhouse and in field is 10 to 20 times less width between rows. Existing sowing machines (because of little width between rows) can only perform scattered sowing. A method and a scheme of the device for maintaining uniform flow of polydispersed system (working liquid – seeds of seedling plants) are theoretically proved. Parameters of the device for maintaining uniform flow of polydispersed system (working liquid – seeds of seedling plants) are experimentally proved. We have also defined the effect of pipe’s position in the tank on flow of polydispersed system out of it and the effect of polydispersed system parameters (working liquid – seeds of seedling plants) on peculiarities of hydraulic sowing technological process. Testing the experimental row sowing machine for seedling plants determined that this machine adequately performs sowing process and increases productivity 8.3 times compared to manual sowing
The purpose of this study is to determine the basic geometric parameters and the kinematic mode of operation of a roll mill intended for threshing corn cobs at the selection stage. Currently, for the threshing of the corn cobs on seeds at the selection stage, disk threshers of the type MKD-M are used in most cases. These devices practically do not injure the seeds, but it can reach 7-8%. In this case, the cob should be re-threshed, which significantly reduces productivity. One of the promising ways to increase the productivity of threshing corn cobs at the selection stage, while maintaining the minimum level of seed crushing, is the use of roller threshing devices. But there are no commercially available corn roller grinders to date. There are only prototypes. One of the most important requirements for corn threshers is the complete exclusion of seed mixing during the change of the treated cobs. Taking into account that the nomenclature of processed breeding numbers can include hundreds of titles, self-cleaning of working organs is extremely necessary to reduce manual labor costs. We have developed an experimental sample of a roller thresher with two horizontally arranged working elements, which showed a high quality of cob threshing in the course of prospecting studies. In the proposed design of the thresher, the problem of self-cleaning of working organs is absent. To determine the basic parameters of the roll mill, which ensures high quality of the cob threshing, we have conducted a full-factor experiment. The following factors were used as controlled factors: diameter of working elements (rolls) and rotation speed of their rotation. The remaining parameters of the grind were justified on the basis of our previous studies of the operation of corn threshers of various types. The criterion of optimization was the crushing of grain, and the quality of the restriction was used such an indicator as a grain of grain. The material for research was the cobs of the Krasnodar hybrid 425 MV. As a result of the studies, the following optimal parameters of the corn selection thresher were established: roll diameter - 152 mm; rotational speed of rollers - 767 min-1; the minimum clearance between rollers is 6 mm: the height of the protrusion of the working surface of the threshing roll is 10 mm
As a result of scientific analysis of the effective plant protection by spraying them with protective-stimulating liquids, the most progressive pneumohydraulic processing method was chosen, enabling the use of a wide mode range. The proposed pneumatic sprayer design can be used to equip sprayers, pollinators and combined units to perform basic operations with the use of pesticides and fertilizers. Using liquid crushing through exposure to working fluid flowing from the feeding tubes of sprayers (jets) with a high-speed air jet, it was possible to carry out the spraying process in a low-volume and ultra-small-volume way in a highly dispersive airborne jets. To study the air-borne jet parameters, providing the working fluid spraying quality as a polydisperse system, we have used a probabilistic-statistical analysis method. It studies variation range of signs according to the classes. Theoretically, the air-borne jet forming process by a pneumatic slit sprayer was considered. Using the three-factor central composite rotatable uniform plan (CURUP), the influence of three factors (surge tank position in cm, air pressure MPa and the feeding tube inclination angle in degrees) on the sprayer performance and the surface response on the working fluid median-mass diameter was determined. It was found that the response surfaces have a form of a paraboloid, the extremum of which is observed at an air pressure of 0.15 MPa (the center of the plan) and the tube installation angle in the spray housing equal to 60 degrees with the middle surge tank position. The maximum coating density of the treated object was 95 pieces / cm2 at the same position of the surge tank and air pressure in the pneumatic line of 0.3 MPa. It was proved that ultra-low volume spraying can be carried out in wide ranges of initial data while observing spraying quality requirements according to the drop median-mass diameter, the average coating density and their distribution uniformity
Planetary mechanisms are used to create the working movement of the Executive bodies of metallurgical and mining machines. Roller working bodies, for the drive of which planetary mechanisms are used, are increasingly being used in the designs of harvesting machines. The processes occurring in the differential threshing devices of harvesting machines are poorly understood, due to the lack of information about the properties of the material in the event of rapidly changing stresses in them. This work is the result of the analysis of previous theoretical as well as experimental studies in the field of threshing. We describe the technological scheme of the shock-vibration threshing device and the principle of its operation. The possible variants of arrangement of drum rolls and drumming are considered. The relationship between the angular velocities of the drum, the drum rolls and the sub-drum is elucidated. Installation of three-sided rollers on the threshing device according to the scheme proposed by us allows additional shaking of the whole threshed rice mass from 75 to 110 times per second
The main subject spotted in this article is a calculation method which helps to depict optimal temperature conditions for seeds stimulation by infrared radiation useful for electromagnetic processing and seed-pelleting with perlit next. The analysis helped to depict that the convenient technical aspects of shortwave infrared radiation is in range 0,76-1,4 mcm. This kind of infrared radiation has the greatest penetrating power into the grain to stimulate. According to the methodology a rapid increase of the temperature of seeds after the critical point reaching during IR treatment leads to the properties deterioration of the of thermolabile materials. The temperature gradient during the IR treatment of seeds has the opposite direction of moisture content and depends on the preliminary humidity of the material. This affects the pre-planting cultivation quality of seeds. To avoid overheating and seeds damage there was a mathematical model of the optimal temperature of the IR radiation calculated. As the result of this method there was obtained the calculation of temperature conditions for IR treatment and heating rate depending on seeds humidity. This calculation method helps to define optimal temperature conditions to avoid harmful influence on seeds due to heating. There was data fitting during this method creation and evaluation which defines the effectiveness and perspective of this elaboration
Pressure mode compressed-air installation use that allows transfer of biological poultry wastes was based on the investigation of agricultural cargo hauling equipment. The installation includes a compressor with a receiver, a conduit, a cork forming section, a valve and a reservoir. As a result of using the installation the energy intensity and consumption of the process are reduced during the transportation of the material, labor costs are reduced and the issue of environmental protection is resolved. To optimize the working process of the compressed-air installation, the volume of the blow-off boiler, the length and diameter of the pipeline were determined. It was established that the most important technological parameter of the installation, which is productivity, depends on its design parameters and physical and mechanical properties of the initial material. The determining influence on the performance is the air pressure and the speed of product movement. The required air pressure is regulated by the compressor, and the speed of transportation is due to the design parameters of the installation and the physical and mechanical properties of the material. These aspects are taken into account in this project for process optimization of the poultry biological waste transportation
The quality of feed is one of the main factors determining the development of industries necessary for the country. In this regard, extrusion technologies for processing raw materials of plant origin are of great interest. The prospect of processing plant raw materials using thermoplastic extrusion is due to two main reasons: first, the large volume and variety of products produced using this technology, and, secondly, the economic effect that gives the production of extrusion products by expanding the consumer properties of the feed produced. Extrusion equipment not only expands the range of feed, but also increases the employment of the rural population during the off-season. Therefore, the purpose of the study is to assess the prospects for the introduction of protein feed production by extruders from sunflower seeds in small agricultural enterprises. The study used an analytical review and analysis of published and patent information on technical means – extruders used for the production of protein feed from oilseeds, such as sunflower. The analysis of literature sources on the work of the existing forage preparation equipment showed that serial machines are metal-consuming, energy-consuming, used with low efficiency, due to technical and technological shortcomings. The analytical review of patent sources of extruders for preparation of compound feeds for the purpose of identification of the direction of their development and elimination of shortcomings of the existing is given. Modernization of extruders for the preparation of feed in the patent information goes in different ways, depending on the goal, which will improve their productivity and quality of protein feed. Serial production of technical equipment for the preparation of protein feed allows you to compete with foreign technology. Therefore, the development and improvement of serial domestic equipment for the preparation of protein feed from sunflower seeds for functional purposes are competitive and significantly cheaper and can reduce energy costs for their extrusion, which is an urgent task
Slope land (ravines, gullies, mountain areas) for many countries of the world are important areas of economic activity, and for some they are the only living space. In the mountainous areas there are cereals and feed, fruit, citrus, nut, berry and essential oil crops, grapes, tea and many others. On slope lands, soil preparation by terracing is widely used. The article considers modern technologies and machines for the construction of terraces in order to create protective and fruit plantations on them and to involve new areas in agricultural turnover. There are two main ways to create terraces: hinged and rifled. Most often, when terracing on tractor-passable slopes, various plows and graders (floor terraces) are used, and on tractor-passable slopes there are universal bulldozers and terrasers (rifled terraces). The shuttle plow PCHS-4-35 and revolving plows are especially convenient for the device of floor terraces, with the help of which it is possible to significantly increase labor productivity by reducing the time for idle runs. For rifled terraces, we use a large complex of machines, the most productive of which are: terraser-Ripper TR-2A; terraced equipment TK-4; terraser T-4M, etc. The use of the proposed complex of machines in the construction of raised and rifled terraces will help to increase productivity and involve new lands in agricultural turnover, which will ultimately increase food security of the Russian Federation