SU893535A2

SU893535A2 - Screw extruder

Info

Publication number: SU893535A2
Application number: SU792850384A
Authority: SU
Inventors: Игорь Степанович Шашкевич; Владимир Трофимович Улитин; Александр Сергеевич Гладкий; Новомир Владимирович Дубровский; Михаил Захарович Лопотко
Original assignee: Центральное конструкторское бюро с опытным производством АН БССР; Институт Торфа Ан Бсср
Priority date: 1979-12-12
Filing date: 1979-12-12
Publication date: 1981-12-30

Description

(5V ШНЕКОВЫЙ ПРЕСС(5V AUGER PRESS

1one

Изобретение относитс к переработке и формованию пластичных материалов повышенной в зкости, например сапропелей, и может быть использовано дл производства гранул из сапропелей или торфа и смесей их с минеральными удобрени ми.The invention relates to the processing and molding of viscous plastic materials of increased viscosity, such as sapropel, and can be used to produce sapropel or peat granules and mixtures thereof with mineral fertilizers.

Известен гранулирующий шнековый пресс дл гранулировани материалов с повышенной в зкостью, содержащий корпус пресса с загрузочным бункером , шнек и матрицу В виде тонкостенного перфооированного диска LI.A known granulating screw press for granulating materials with increased viscosity, comprising a press body with a hopper, auger and a matrix In the form of a thin-walled perforated disk LI.

Недостатком этого гранул тора вл етс то, что при производстве мелких гранул (с малым поперечным сечением ) матрица оказывает повышенное сопротивление. Это приводит к значительному снижению производительности и росту энергоемкости процесса гранулировани . The disadvantage of this granulator is that when producing small granules (with a small cross section), the matrix has an increased resistance. This leads to a significant decrease in productivity and an increase in the energy intensity of the granulation process.

По .основному авт. св. М 781087 известен шнековый пресс дл гранулировани пластичных материалов повышенной в зкости,, содержащий корпус с загрузочным бункером, размещенный в корпусе шнек с ножом, перфорированную матрицу с выполненными в ней пазами, прижимной перфорированный диск и проволочную сетку. Отверсти перфорированного прижимного диска и матрицы выполнены соосными, проволочна сетка размещена в пазах между перфорированным прижимным диском и матtQ рицей, а с их отверсти ми совмещены места пересечени проволок сетки 2.According to the main author. St. M 781087 is a well-known screw press for granulating plastic materials of increased viscosity, comprising a housing with a hopper, an auger with a knife in the housing, a perforated die with grooves in it, a pressure perforated disk and a wire mesh. The holes of the perforated pressure disc and the die are made coaxial, the wire mesh is placed in the grooves between the perforated pressure disc and the mat, and the intersection wires of the wire 2 are aligned with their holes.

Недостатком известного шнекового пресса вл етс то, что при гранулировании сапропелей или торфа на про15 волоЧной сетке происходит постепенное накопление волокнистых и других инородных включений, что приводит к забиванию матрицы и необходимости периодической очистки ее. Очистка A disadvantage of the known screw press is that when granulating sapropel or peat on a fiber grid, there is a gradual accumulation of fibrous and other foreign inclusions, which leads to clogging of the matrix and the need to periodically clean it. Cleaning

Claims

20 of the matrix is associated with dismantling and installing it after cleaning, which requires a lot of working time. The matrix is cleaned manually. All this leads to a decrease in productivity of the screw press and complicates its maintenance. The purpose of the invention is to increase the productivity of the screw press and ease of maintenance. The goal is achieved. The screw press is provided with an additional perforated disk rigidly connected to the main perforated disk, forming a cage for accommodating a wire mesh in it and clamps mounted on the case for fixing the matrix on the case and connecting the clip to the matrix, and mounted on the housing so that it can be rotated in two mutually perpendicular planes. FIG. 1 shows a longitudinal section of the proposed screw press; in fig. 2 is a view A of FIG. one; in fig. 3 section bb in fig. 2; in fig. k is a section bb of FIG. 2. The screw press contains a housing 1 with a hopper

2. In case 1, there is a screw 3 on the shaft of which a knife 6 is installed in front of the perforated die with holes 5. On the outside of the matrix C, a wire mesh 8 is installed in the sleeve 7. The holder 7 is made in the form of two thin-walled equal thickness, rigidly connected with screws 9 perforated disks 10, between which the wire grid 8 is clamped. The disks 10 are provided with holes 11. Wire intersection points the grids 8 are aligned with the longitudinal axes of the holes 5 and 11, which ensures that the holes 5 and 11 are divided into several parts. The matrix is attached to the housing 1, the yoke 7 is connected with the help of clips 12 to the housing 1 by means of two Hinges 13 and 14 with mutually perpendicular axes. To align the yoke 7 with the die C, a pin 15 mounted on the die is used. The clamp 7 is pressed against the die k by clamps 16 attached to the housing 1. The pin 17 of the hinge 1 is axially displaced in the sleeve 18 as shown in FIG. 3. The screw press works as follows. The material from the hopper 2 by the rotating screw 3 is fed to the perforated 4 matrix C. The knife 6 mounted in front of the matrix rotates together with the screw

3. At the same time, the knife 6 destroys the material compacted in front of the matrix k and cuts it along the plane of the matrix, which prevents clogging of the holes 5 of the matrix k and contributes to a better processing of the material. Further, the material is pressed through the holes 5 of the matrix k, where it is molded into granules and then through the yoke of the holder 7 where the wires of the grid 8 are cut into several granules along several parts of the desired cross section. When fiber and other foreign inclusions are accumulated in front of the wire mesh 8, it is cleaned by i6e3 removal of the matrix. For this, the clips 16 are released, the holder 7 is retracted from the grille k to be removed from the pin 15. In this case, the pin 17 of the hinge 14 is moved axially in the hub 18. Then the holder 7 is rotated 180 ° in the hinge 13c followed by a turn of 180 in the hinge 14 until the holes 5 and 11 align. Next, the sleeve 7 is put on the pin 15 and pressed against the die with clamps 16. Thus, the sleeve 7 is connected to the wire mesh 8 with the opposite (clean) side with the wire mesh 8. After performing these manipulations, the screw press is turned on and the pressurized mass separates the fibers and other inclusions from the mesh by cleaning it. The proposed screw press design improves productivity by reducing the loss of working time on the die and by eliminating the manual cleaning of the mesh. The exception of manual cleaning of the mesh improves the working conditions of the staff. In addition, the proposed design allows granules of different sizes to be obtained on the same matrix by installing different Grids. Claims of the invention Screw press, mainly for granulating plastic viscous materials according to the author. St. N 781087, characterized in that, in order to increase the productivity and convenience of servicing