SE462552B

SE462552B - Hammer mill

Info

Publication number: SE462552B
Application number: SE8402183A
Authority: SE
Inventors: K Elonen
Original assignee: Neles Oy
Priority date: 1983-04-20
Filing date: 1984-04-18
Publication date: 1990-07-16
Also published as: FR2544628A1; FI68531C; FI68531B; FI831347A0; FI831347L; DE3414543A1; SE8402183L; SE8402183D0; FR2544628B1; CA1234791A

Description

15 20 25 30 35 40 462 552 kring sin axel, minskar anordningens servicebehov och livs- längden ökar. 15 20 25 30 35 40 462 552 around its axis, the device's service needs decrease and the service life increases.

Uppfinningen och dess detaljer beskrivs närmare i det följande med hänvisning till de närslutna ritningarna, vid vilka fig, 1 föreställer schematiskt tvärsnittet av en hammar- kross enligt en utföringsform av uppfinningen, Lig¿_2 visar 1 i sidovy, fig, 3 föreställer tvärsnittet av rotorn i en annan utföringsform av uppfinning- rotorn i krossen enligt fig. en, fig, 4 visar rotorn i fig. 3 i sidovy, 1¿g¿_§ föreställer tvärsnittet av rotorn i en tredje utföringsform av uppfinning- en och ¿¿gh_§ visar rotorn i fig. 5 i sidovy.The invention and its details are described in more detail in the following with reference to the close-up drawings, in which Fig. 1 schematically represents the cross section of a hammer crusher according to an embodiment of the invention, Fig. 2 shows 1 in side view, Fig. 3 represents the cross section of the rotor in another embodiment of the invention rotor in the crusher according to Fig. 1, Fig. 4 shows the rotor in Fig. 3 in side view, 1¿g¿_§ represents the cross section of the rotor in a third embodiment of the invention and ¿¿gh_§ shows the rotor in Fig. 5 in side view.

Den uppfinningsenliga hammarkrossen har en stomme 1' ävensom en rotor 2 med hammare 4. Under rotorn befinner sig en siktliknande rost 3. Rotorns stomdel består av stomplattor 7 som har fästs pà ett med rotorns rotationsaxel parallellt avstånd från varandra pà så sätt att de på ledaxlar 5 vridbart monterade hamrarna finner plats mellan plattorna 7.The hammer crusher according to the invention has a body 1 'as well as a rotor 2 with a hammer 4. Below the rotor there is a screen-like grate 3. The body part of the rotor consists of body plates 7 which are fastened at a distance parallel to each other with the rotor axis. 5 the rotatably mounted hammers find space between the plates 7.

I utföringsformen enligt fig. 1 och 2 har hamrarna glanordnats i tva rader och stomplattorna har fast sammanbundits medelst balkar 8 mellan plattorna. Balkarnas formgivning och placering är av sådan art att de mellan plattorna 7 håller sig helt utanför det område som definieras av den kring sin axel 5 roterande hammaren 4 (de med streckade linjer antydde mindre cirkelbågarna i fig. 1). Balkarna ligger pa stommens sidor och sträcker sig inte fram till stommens rotationsaxel. Sålunda kan hamrarna ha sådan längd att hamrarna i sitt inätvända läge sträcker sig ända fram till rotorns centrumaxel.In the embodiment according to Figs. 1 and 2, the hammers have been glossy arranged in two rows and the frame plates have been fixedly connected by means of beams 8 between the plates. The design and placement of the beams are of such a nature that they between the plates 7 remain completely outside the area defined by the hammer 4 rotating about its axis 5 (the smaller circular arcs indicated by dashed lines in Fig. 1). The beams lie on the sides of the frame and do not extend to the axis of rotation of the frame. Thus, the hammers can have such a length that the hammers in their inverted position extend all the way to the center axis of the rotor.

Rotorn är uppburen i maskinstommen med hjälp av tapp- axlar 8 i rotorns ändar.The rotor is supported in the machine body by means of pin shafts 8 at the ends of the rotor.

När rotorn roterar driven av sitt drivmaskineri (inte àtergivet i ritningarna), intar hamrarna till följd av centri- fugalkraftens inverkaÄ5ett utstående läge, varvid de i sin rörelse övertäcker regionen av den i fig. 1 med streckade linjer inritade större cirkelbàgen. Materialet som skall krossas matas in i krossen i pilens x riktning genom matnings- öppningen. När hamrarna slår mot materialet blir detta krossat och de krossade partiklarna faller ned genom rostens 3 springer i pilarnas Y riktning. Genom slagens verkan tenderar I och med att inga hamrarna att vrida sig pà sina axlar. hinder finns på deras rörelsebana, kan de om så behövs även 10 15 20 25 462 552 svänga runt ett fullt varv.As the rotor rotates driven by its drive machinery (not shown in the drawings), the hammers assume a protruding position due to the action of the centrifugal force, whereby in their movement they cover the region of the larger arc drawn in Fig. 1 in broken lines. The material to be crushed is fed into the crusher in the x direction of the arrow through the feed opening. When the hammers hit the material, it is crushed and the crushed particles fall down through the runners' 3 springs in the direction of the arrows Y. Due to the action of the blow, you tend not to turn the hammers on their shoulders. obstacles are present on their trajectory, they can, if necessary, also turn around a full revolution.

I utföringsformen enligt fig. 3 och 4 har hamrarna 4 anordnats i fyra rader. Raderna ligger mellan stomplattorna gripande in i varandra pà sa sätt att i varje slits mellan plattorna sitter det två hammare, som tillhör mot varandra liggande rader. Mellan stomplattorna finns inga balkar, utan plattorna har fästs ihop med hjälp av hamrarnas axlar 9, som sträcker sig helt igenom rotorn. Mellan stomplattorna har ytterlgiare insatts fasta mellanhylsor 10, mot vilka stom- plattorna har pressats.In the embodiment according to Figs. 3 and 4, the hammers 4 have been arranged in four rows. The rows lie between the frame plates gripping each other in such a way that in each slot between the plates there are two hammers, which belong to opposite rows. There are no beams between the frame plates, but the plates have been fastened together by means of the shafts 9 of the hammers, which extend completely through the rotor. Additional intermediate sleeves 10 have been further inserted between the body plates, against which the body plates have been pressed.

I utföringsformen som visas i fig. 5 och 6 finns det tre hammarrader. Hamrarna har interkalerats på samma sätt som i utföringsformen av fig. 3 och 4, emellertid på sådant sätt att i varje slits finns endast en hammare. Därmed kommer det i varje hammarrad mellan två hamrar alltid två tomma slitsar. I och med att det finns blott en hammare i varje slits, kan den även sträcka sig förbi centrumaxeln, och härmed kan hela anordningens tvärsnitt göras ännu mindre i förhållande till hammarens längd.In the embodiment shown in Figs. 5 and 6, there are three rows of hammers. The hammers have been intercalated in the same way as in the embodiment of Figs. 3 and 4, however in such a way that in each slot there is only one hammer. Thus, in each row of hammers between two hammers, there are always two empty slots. Since there is only one hammer in each slot, it can also extend past the center axis, and thus the entire cross section of the device can be made even smaller in relation to the length of the hammer.

Uppfinningen är inte inskränkt enbart till de ovan framförda utföringsformerna, utan den kan variera inom ramen för patentkraven. Förutom de framförda rotorlösningarna kan hamrarna anordnas även i många andra ordningsföljder i vilka ingen hamrarnas rörelser hindrande central axel kommer itll användning. Rotorns stomme kan framställas genom gjutning i ett stycke eller hopsättas med svetsning av delar. Således kan de som stombalkar betecknade delarna 8 lika väl vara integrala med stomplattorna 7.The invention is not limited only to the embodiments set forth above, but it may vary within the scope of the claims. In addition to the rotor solutions advanced, the hammers can also be arranged in many other sequences in which no movement of the hammers obstructing the central shaft will come into use. The rotor body can be produced by casting in one piece or assembled by welding parts. Thus, the parts 8 designated as frame beams can just as well be integral with the frame plates 7.

Claims

462 552 4 10 '15 20 25 30 35 Patent claim

Hammer crusher to which belongs a rotating rotor (2) and one or more hammers (4) rotatably attached to the rotor about an axis (5 or 9) parallel to the axis of rotation of the rotor, the rotor body at each hammer having a groove radially to the rotor so that the hammer can rotate freely 360 degrees about its axis, characterized in that the length of each hammer (4) is such that the hammer in its inwardly turned position extends at least up to the center of rotation of the rotor (2).

Hammer crusher according to claim 1, characterized in that in its inverted position it extends to the rotor of the rotor (2) in that the length of each hammer (4) is such that the center of alignment and that the number of hammers in each transverse plane is not greater than two.

Hammer crusher according to claim 1, characterized in that the length of each hammer (4) is such that in its inwardly swung position it extends beyond the axis of rotation of the rotor (2) and that the number of hammers (4) in each transverse plane is one.

Hammer crusher according to claim 1, wherein the hammers (4) are arranged in two or more rows parallel to the axis of rotation of the rotor (2), characterized in that the body of the rotor (2) consists of a plurality of body plates (axially spaced apart) ( 7) which have been attached to each other by means of the shafts (9) of the hammers, the hammers (4) being mounted on their shafts between the frame plates.

Hammer crusher according to claim 1, wherein the hammers (4) are arranged in two or more rows parallel to the axis of rotation of the rotor (2), characterized in that the body of the rotor (2) consists of a plurality of axially spaced body plates ( 7) which are connected to each other by intermediate parts (6) between the body plates, the hammers (4) being mounted on their shafts (5) between the body plates. fu ..