CN104437748A - Hammer crusher - Google Patents

Abstract

The invention relates to a crusher, and concretely relates to a hammer crusher. The hammer crusher comprises an upper box body, a lower box body, a rotor part, a discharging grid plate and an impact plate, the rotor part is composed of a main shaft, discs, a triangular plate, a hammer head, a pin shaft and a separation sleeve, the hammer head is movably located on the triangular disc and between the discs through the pin shaft and the sleeve, and the triangular plate and the discs are arranged on the main shaft and are supported and located by a bearing seat device; and the discharging grid plate is a full screen discharging grid plate. The change of the shape of the hammer head reduces the weight (8.5kg) of a single piece, and makes the hammer crusher convenient to replace and take; the hammer head is sheathed on the pin shaft through a hole, so the hammer head can flexibly and freely rotate, so once the hammer head meets iron or a super hard material, the hammer head can automatically overturn and evade in order to avoid direct hit damages; the discharging grid plate is the full screen discharging grid plate, so the screening area is increased, and the doping of some materials with unqualified granularity into finished products is avoided; and the impact plate is changed to form an old lining board, so the impact plate cannot be crushed.

Description

Hammer mill

Technical field

The present invention relates to a kind of disintegrating machine, specifically a kind of hammer mill.

Background technology

What before the mill of primary raw material in raw grinding technique---lime stone, fragmentation was selected is plate-hammer-type high capacity crusher.When its runs well, the ratio of reduction is large, and discharging-material size is little and evenly (≤20-30mm granularity accounts for more than 70%), can significantly improve main engine bed effect 3-5 ton/time, and then reduce unit power consumption, use in many cement plants.But in actual motion, fault rate is higher, and discharging-material size is uneven, repeatedly there is tup in (20-50mm not etc., more than 30-50mm accounts for more than 50%), counterpunch board breaks, hammer handle wrecks, bending, causes putty, burns V-belt even motor damage.Incomplete statistics, less than 6 months except normal service 2 times/month, fault time, be forced to change tup more than 50, hammer handle more than 40, counterpunch board 10, connecting bolt, nut, pad etc. more than 100 overlapped more than 30 hours.Repeatedly cause production to be forced to interrupt, stop production, cause larger economic loss to company.

Former project organization such as Fig. 1 shows, bar 7 is fixed on hammer handle 5 by bolt 6, and hammer handle is fixed on wheel hub 3 by bearing pin 8 and jointly forms rotor, and rotor is by the supporting such as main shaft 3, bearing holder device 4 location.Material enters the strike of the tup being subject to High Rotation Speed after crusher chamber and cracked from feeding mouth through striker plate 12, back reflection is again impacted on other tups, liner plate 13, impacts again, brokenly to discharge finally by the gap between adjustable counterpunch board 10 and revolution tup, discharging sieve grate 11 through repetitious impact, fragmentation, reflection.Half sieve (not filling sieve grate part) falling into lower chamber 2 is discharged by moving after spring pressurized effect counterpunch board when running into ironware or superhard material.

The situation of being combined thinks existing problems: 1) tup is fixed.Automatically can not dodge when running into ironware or superhard material, can only meet head on to be beaten (pounding); 2) the single volume of the tup of board hammer structure large (20kg), easily becomes block cracked (tup is originally foundry goods) after running into the bang of brute force (ironware or superhard material) local, cause rotor dynamic balancing destroyed cause vibration sharply large, temperature rise is fast and putty; 3) hammer handle is forging, and tup links into an integrated entity, and can flexural deformation even rupture when running into ironware or superhard material; 4) counterpunch board material is wear-resisting but frangible, and when needing spring pressurized to be shifted, counterpunch board is also cracked; 5) the discharging double-edged fine-toothed comb of half sieve structure makes the material of a part of defective granularity be mixed under special circumstances in finished product, and as skidded in V-belt, linear velocity reduces, and centrifugal force is less than normal, or when indivedual tup fault causes crushing efficiency low.

Summary of the invention

Object of the present invention provides the hammer mill that a kind of failure rate is low, spare parts consumption are few.

The present invention includes upper and lower casing, rotor portion, discharge grid plate, counterpunch board, it is characterized in that rotor portion is made up of main shaft, disk, triangular plate, tup, bearing pin and separation sleeve, tup is positioned on triangular plate by bearing pin and separation sleeve activity, is positioned between disk, and triangular plate and disk are arranged on main shaft and support location by bearing holder device; Described discharge grid plate is for entirely to sieve formula.

Above-mentioned counterpunch board is wear-resisting, non-friable steel plate materials.

The present invention compared with prior art has the following advantages:

1, the change 1 of tup profile) piece weight (8.5kg) reduces, and change and lift conveniently.2) latent defect such as pore, sand holes in casting is decreased; 3) it is that passing hole is set on bearing pin, can revolution nimbly and freely.Once run into ironware or superhard material, can overturn voluntarily and dodging, and then avoid directly being broken bad.

2, discharge grid plate is for entirely to sieve formula, increases sieving area, avoids some defective granularity materials and escapes and be mixed in finished product.

3, counterpunch board is not easily broken after changing old liner plate into, and then reduces the ironware because cracked counterpunch board sees in, and takes full advantage of waste and old material simultaneously.

4, reduce fault time, improve main frame more than running rate 4..0%.Monthly normal inspection is just passable, for tup turn-over prepares (utilizing storehouse completely to wait downtime).

5, decrease spare parts consumption, within 1-2 month, change 1 secondary tup, alleviate the labour intensity of post work.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the structural representation of raw sheet hammer high capacity crusher.

Fig. 2 is structural representation of the present invention.

In Fig. 2,1. upper box, 2. lower box, 3. main shaft, 4. bearing holder device, 5. disk, 6. triangular plate, 7. bearing pin and separation sleeve, 8. tup, 9. counterpunch board, 10. discharge grid plate, 11. striker plates, 12. liner plates, 13. springs and adjusting device.

Detailed description of the invention

The present invention includes upper box 1, lower box 2, rotor portion, discharge grid plate 10, counterpunch board 9, rotor portion is made up of main shaft 3, disk 5, triangular plate 6, tup 8, bearing pin and separation sleeve 7, tup 8 by bearing pin and separation sleeve 7 activity to be positioned on triangular plate 6, between disk 5 namely tup 8 by the bearing pin on triangular plate 6 and separation sleeve 7 and triangular plate 6 hinged and between disk 5, tup 8 passing hole is set on bearing pin, can revolution nimbly and freely once run into ironware or superhard material, can overturn voluntarily and dodge, and then avoid directly being broken bad; Triangular plate 6 and disk 5 are arranged on main shaft 3 and support location by bearing holder device 4; Discharge grid plate 10, for entirely to sieve formula, increases sieving area, avoids some defective granularity materials and escapes and be mixed in finished product; Counterpunch board 9 is wear-resisting, non-friable steel plate materials.

Material enters the strike of the tup being subject to High Rotation Speed after crusher chamber and cracked from feeding mouth through striker plate 11, back reflection is again impacted on other tups, liner plate 12, impact again through repetitious impact, fragmentation, reflection, broken ... until qualified, discharge finally by the gap between spring and the adjustable counterpunch board 9 of adjusting device 13 and revolution tup 8, discharge grid plate 10 and enter next procedure.The material of defective granularity can not enter lower road formula sequence by comb seam, can only accept broken in crusher chamber again.Simultaneously at the enterprising Row sum-equal matrix of material type selecting, former counterpunch board is high-abrasive material but the frangible old liner plate used grinding machine instead and resign from office.

Claims (2)

1. a hammer mill, comprise upper box, lower box, rotor portion, discharge grid plate, counterpunch board, it is characterized in that rotor portion is made up of main shaft, disk, triangular plate, tup, bearing pin and separation sleeve, tup is positioned on triangular plate by bearing pin and separation sleeve activity, is positioned between disk, and triangular plate and disk are arranged on main shaft and support location by bearing holder device; Described discharge grid plate is for entirely to sieve formula.

2. hammer mill as claimed in claim 1, is characterized in that described counterpunch board is wear-resisting, non-friable steel plate materials.