PL58643B1

PL58643B1 -

Info

Publication number: PL58643B1
Application number: PL117941A
Authority: PL
Inventors: Bronislaw Pietrasz inz.
Original assignee: Biuro Projektów Kopalnictwa Surowców Chemicz¬Nych „Biprokop"
Filing date: 1966-12-12
Publication date: 1969-08-25

Description

Ciegla 15 i poduszka gumowa 18 sa zaczepione na ramie 19 przesiewacza. Naped przesiewacza stanowia wi¬ bratory 20 o duzej czestotliwosci i malych ampli¬ tudach zamocowane od spodu do rusztów wspor- 65 4 czych 7. Konce okraglych pretów 1 osadzone sa luzno w pierscieniach gumowych 21 usytuowanych w lozyskach oczkowych 22 i 23. Lozyska oczkowe 22 przymocowane sa do belki nosnej 2 a lozyska oczkowe 23 przymocowane sa do bocznych belek nosnych 3 i 4. W lozyskach oczkowych 23 do pretów 1 i gumowych pierscieni 21 przylegaja krazki 24 dociskane sprezynami 25 wypelniajacymi rowki 26 w lozyskach oczkowych 23. Zastosowanie sprezyn 25 do zamykania lozysk oczkowych za¬ miast powierzchni stosowanych listew na wszyst¬ kie lozyska rozciagniete wzdluz jednej linii pro¬ stej daje mozliwosc latwej wymiany pojedynczych pretów 1.Proces rozdzialu masy ziarn wedlug wielkosci za pomoca przesiewacza wedlug wynalazku doko¬ nuje sie w ten sposób, ze nadany material posu¬ wa sie po ruszcie wsporczym 7 a nastepnie po powierzchni pretów 1 zamontowanych prostopadle do dlugosci rzeszota i kierunku posuwu pr.zesieT wanego materialu. Ruch materialu nastepuje na skutek sily ciezkosci, drgan wibratora 20 oraz wstepnej predkosci ziarn powstalej podczas spa¬ dania ich na ruszt wsporczy 7, przy czym drobna frakcja materialu przechodzi przez szczeliny mie¬ dzy pretami 1 do zsuwni 13 i nastepnie zsypu 14 a nadziarno zsuwa sie po ruszcie wsporczym 9.W zaleznosci od przesiewanego materialu nachy¬ lenie rzeszota jest regulowane w granicach od 40 do 55°. Drgania wibratora 20 powoduja obracanie sie pretów 1. Obracajace sie prety 1 oraz dodat¬ kowo nachylenie rzeszota powoduja, ze nie na¬ stepuje zakleszczanie ziarn przesiewanego ma¬ terialu w szczelinach miedzy pretami. Poza tym zakleszczanie jest takze eliminowane dzieki temu, ze szczeliny czynne stanowia rzut na plaszczyzne pozioma szczelin rzeczywistych usytuowanych pod takim samym katem jak rzeszoto.Szczeliny czynne rozdzielaja na dwie klasy ziarn przesiewany material, przy czym szczeliny czyn¬ ne zmniejszaja sie w przypadku wzrostu kata na¬ chylenia rzeszota.Zastosowanie przesiewacza pretowego wedlug wynalazku do rozdzielenia materialu sypkiego umozliwia latwy remont przesiewacza i zwiek¬ szenie wydajnosci przesiewania przy stosunkowo malym zuzyciu energii. Poza tym prosta budowa przesiewacza ulatwia zainstalowanie odciagów do odpylania pylów powstalych przy przesiewaniu. PLCiegla 15 and the rubber cushion 18 are hooked on the screen frame 19. The screen is driven by vibrators 20 of high frequency and small amplitudes attached to the support grates 7. The ends of the round bars 1 are loosely mounted in rubber rings 21 situated in the ring bearings 22 and 23. The ring bearings 22 are attached are to the traverse 2 and the eyebolts 23 are attached to the side traverses 3 and 4. In the eyebolts 23, the rods 1 and rubber rings 21 are adjoined by the disks 24, pressed with springs 25 filling the grooves 26 in the eyebolts 23. Use of springs 25 to close the bearings Instead of the surface of the slats used, all the bearings stretched along one straight line make it possible to easily replace individual bars. 1. The process of distributing the weight of grains according to the size by means of a screen according to the invention is accomplished in such a way that the given material is ¬ is made on the supporting grate 7 and then on the surface of the bars 1 mounted perpendicular to the riddle length and the direction of feed of the important material. The movement of the material is due to the force of gravity, the vibration of the vibrator 20 and the initial velocity of the grains formed when they fall onto the supporting grate 7, whereby a fine fraction of the material passes through the gaps between the rods 1 into the chute 13 and then the chute 14 and the oversized grain slides down. on the supporting grate 9. Depending on the screened material, the inclination of the riddle is adjustable in the range from 40 to 55 °. The vibrations of the vibrator 20 cause the rods 1 to rotate. The rotating rods 1 and additionally the inclination of the riddle prevent the grains of the screened material from sticking in the gaps between the rods. In addition, jamming is also eliminated due to the fact that the active gaps are projected onto the horizontal plane of the actual gaps situated at the same angle as the ridged material. The active gaps separate the screened material into two grain classes, while the active gaps decrease when the angle increases. The use of a roller screen according to the invention to separate the bulk material enables the screen to be easily overhauled and the screening capacity to be increased with a relatively low energy consumption. Moreover, the simple structure of the screen facilitates the installation of extractors for dedusting dust formed during the screening. PL

Claims

Claims 1. A bar screen consisting of a riddle equipped with sieves, a riddle suspension, a screen drive in the form of vibrators and a screen frame, characterized in that the riddle consists of side beams (3) and (4) made of made of shapes and connected to the central beam (2) by means of stiffening crossbars (5) and (6) and supporting grates (7) and (8) made of solid sheet metal, the ends of the round bars (1) of the sieves are loosely mounted in rubber rings (21) located in ring bearings (22) and (23) mounted on the traverses (2), (3) and (4), and the drive 58643 consists of two vibrators (20) mounted on the bottom on the support grate (7).

2. A roller screen according to claim 1, characterized by the fact that the bottom of the riddle, situated at an angle of 40 to 55 ° to the horizontal, is suspended on the rods (15) equipped with spring shock absorbers (16) and the upper threaded part and the top of the riddle is supported by a rubber pillow (18). ), with the tie rod (15) and the rubber pad (18) hooked to the screen frame (19). 10 4. 6 Rod screen according to claims 1 and 2, characterized by the fact that in the ring bearings (23) attached to the side beams (3) and (4) to the rods (1) and the rubber rings (21), there are discs (24) pressed by springs (25). ) filling the grooves (26) situated in the ring bearings (23). Rod screen according to claims A plug (9) which protrudes above the surface of the rods (1). la, 20/01 S8643 MKP B 03 b £ M1 PZG in Pab., res. 1113-69, pp. 260 copies of PL