CN85104173A - Impact crusher discharge device - Google Patents

Abstract

The invention of impact crusher discharge device belongs to ore reduction machinery class.This disintegrating machine needs below the crushing raw ore to 25 more than 1 meter millimeter.Forward flank of tooth double-edged fine-toothed comb of the present invention not only has certain crushing performance, and consistent with the current direction of material because of the seam of combing, and can prevent the obstruction that attaches of wet feed and soil.And rely on row's iron security door that the centrifugal force that produces in the machine iron sleeve movement is opened, foreign matter such as excavator bucket teeth is discharged voluntarily.Thereby the adaptability of disintegrating machine is good, and production capacity is higher, and power consumption is lower, and parts life-span prolongs, and it is safer to work.

Description

Impact crusher discharge device

The present invention relates to be used for the drawing mechanism of the single block hammer crusher of breaking ores.Its ratio of reduction can be more than 40, and discharging-material size can reach below 25 millimeters, can discharge by security door when can not broken foreign matter mixing in material.

Crusher in crushing ratio commonly used in the past is at 3～7; can reach 20 at most; its drawing mechanism is often owing to carry clay secretly particularly under rainy season, the moisture conditions and local or all blocked in the ore; need to shut down cleaning; otherwise production capacity is descended; power consumption increases, and the blocked chance of the hammer mill of single hop large reduction ratio is more, even stops up and comb seam and material can not be discharged.

Sneak into foreign matter that can not be broken in the material such as after bucket tooth, drill bit, rail, tup etc. advance machine, gently then form overload, also may damage parts when serious, thereby it must have protective device.So far, the single hop beating crusher has two classes protections way, use the earliest be to establish safety plug on the power transmission shaft to transship and cut off the way protection of shutting down.The equipment of Denmark Smidth company, West Germany Krupp company for example.Fail when this way often has safety plug to cut off to cut off, and the fault phenomenon that fractures should not break the time, and need buildup in the scavenger after therefore shutting down, change safety plug after, can restart, time-consuming taking a lot of work, very not popular with users.That more advanced is West Germany O﹠amp; The protection way of K company.It protects machine by " feeding to advance to spue " mode.Be that feed cavity has certain shape, make to be entrained in to enter the foreign matter that can not smash in the machine in the raw ore that got up by the rotor throwing, directive epicoele antetheca is rebounded out by charging aperture, drops on the batcher again.But because ironware is not to enter separately in the machine but mix among ore, thereby has hindered its trace widely, so that need in machine, turn round some circles, just can pass the material curtain after catching a packet repeatedly and hit the epicoele antetheca and eject with rotor.O﹠amp; K company regulation, in a single day operating personnel hear when hitting metallic sound, should stop feeding immediately, otherwise be difficult for spuing, and feed again after perhaps spuing.Use is the result show, carelessness is arranged slightly, and serious accident will take place.The tup grid section is damaged.

Sweden Svedala-Arbra company 1978 be used for to West Germany's application a kind of disposal of refuse and waste residue hammer mill can not be broken the invention (DRP number 2819611) of discharger of metal, it is to utilize impulsive force as discharging turning on the power of scraper-trough conveyer gate, the shape of gate is that this door can only be contained on the rotor horizontal center line in face of the door of the upright swing of direction of material.

The objective of the invention is to create a kind of sticking stifled seam of combing that is difficult for; make qualified ore discharge smoothly when hard foreign matter of the different shape that can not be broken such as ironware etc. exist, can discharge automatically simultaneously and do not need breaks in production; protected the disintegrating machine internal works simultaneously; and be not damaged, thereby improved the operating efficiency of hammer mill.

In order to solve this task, be according to the ore that contains adhesional wetting materiel being difficult for attach the principle that has certain breaking capacity simultaneously again to create a kind of novel double-edged fine-toothed comb, utilize the principle that the centrifugal force that can not broken hard thing produces at the volley of machine opens the door and create a kind of security door, it has the performance of automatic open close.The single block hammer crusher that has this kind discharge device is the ideal crushing machinery that is mixed with the ore of adhesional wetting materiel.

Fig. 1 band bilateral discharge device of security door.

The one-sided discharge device of Fig. 2 band with security door.

Fig. 3 is positioned at the discharge device of the above security door of center line.

Explain the present invention below in conjunction with Fig. 1, Fig. 2, the described embodiment of Fig. 3.

Single block hammer crusher is the same with general hammer mill, by the rotor of the some tups of hinged suspension 1., upper casing 2., 4. 3. lower casing wait part to form with discharge grate.But because its ratio of reduction is very big, spill in order to prevent defective ore, discharge grate must be totally enclosed.This just makes those ironwares that suitable size can not smash that have that come with the stope discharge nowhere.The present invention be the installing of the rear of discharge grate holding around together outside the rotor turning circle normally closed security door 7..(seeing Fig. 2 and Fig. 3).

When the ratio of reduction that requires was big, discharge grate was indispensable part, it be contained in rotor below.The ore that enters disintegrating machine is subjected to the strike of tup and the bump of counterpunch board in the epicoele of rotor and upper casing formation, obtain certain fragmentation.Then enter that the cavity of resorption that forms between rotor and discharge grate further catches a packet and the wiping effect of cutting further is broken, meet the requirements until granularity and discharge from the seam of combing.If the ratio of reduction of epicoele reaches 10, the ratio of reduction of cavity of resorption need be more than 4.

Create and a kind ofly be difficult for being stained with soil and stop up, thereby the double-edged fine-toothed comb structure that qualified ore can be smoothly discharged in the slave chamber in time with the scope of application of expansion hammer mill, is improved its operating efficiency.Characteristics of the present invention are: it is to have the grate plate of forward combing and stitching, have toothed surfaces again.Its seam of combing is consistent with the traffic direction of material in the machine chamber, and the material that it is qualified that it can guarantee size is successfully discharged, and does not attach on grid section and be not detained.And toothed surfaces has the higher fragmentation of discharge grate than the horizontal comb seam of routine, makes the ore that enters cavity of resorption mainly cut fragmentation by impact grinding rather than wiping.Therefore it is a kind of higher fragmentation that has, and has the discharge grate that discharge is unobstructed, the material that is difficult for being dampened stops up simultaneously again.

In order to guarantee the satisfactory granularity of discharge, its comb seam width generally should not be above requiring 10% of discharging-material size, all grid sections on the grate plate should have trapezoidal cross section, top broad, narrow slightly below, it had both kept quite high section factor, helped passing through of material again, and also the wearing and tearing gradually of reason grate plate do not make the rapid broadening of seam of combing.

This forward flank of tooth grate plate can make some, is centered around below the rotor.Its installation and conventional discharge grate do not have any difference, both can be contained in to have a separate unit on the framework of one's own, can be contained in the chute of lower casing two side yet.Last each assembly method can make fixed, perhaps make adjustable, when tup wearing and tearing shorten it with the increase of grate plate gap after can promote grate plate and make the gap return to normal size.

The comb of existing discharge grate seam majority be that horizontal comb stitches direction, and be perpendicular with the traffic direction of material in the machine chamber, and it is less to pass through area, very easily attached obstruction by wet feed.The double-edged fine-toothed comb of oblique comb seam to pass through area also limited, and inside is the light face, and is all very poor to the fragmentation of ore.Because discharge is not smooth, the cavity of resorption buildup, tup takes place that strong rubbing cut etc. in buildup reason makes their output reduce, and power consumption raises, and component wear is very fast, and produce difficult rainy season.

The upper end of this security door (Fig. 1, Fig. 2 and Fig. 3) is hinged, can swing.This door with arc surface is keeping normally closed position by gravity or spring force.Drive when entering the rotor that ironware that disintegrating machine can not be broken turned round, enter the security door area through the discharge grate workspace after, under centrifugal force (and gravity) effect that it self has as circular motion, push security door open and 7. discharge outside the machine.Ironware is discharged the back security door and is closed automatically immediately, and whole discharge process does not influence the operate as normal of disintegrating machine, therefore also need not to shut down.Security door need have enough sizes, and the common ironware that the stope can be infiltrated when it is opened is discharged and unlikely blocking smoothly.Therefore the use of this security door must not reduce discharge grate in the subtrochanteric scope that holds around, and has enough discharging areas to guarantee it.When if the discharging area is not enough, might as well also on security door, open some the seams of combing, the installation position of security door is different with the shape of the crusher chamber of disintegrating machine, can drawings attached 1,2, multiple scheme such as accompanying drawing 3.Security door both can be one-sided use, also can use by bilateral, and the latter's life-span can prolong one times.

The present invention realizes through experiment, really can will sneak into drill bit in the ore, bucket tooth, rail etc. and have the ironware that suitable size can not smash and discharge rapidly, and tup and double-edged fine-toothed comb do not damage, also needn't breaks in production, and its reliable operation.

Being compared as follows of the Protection Code of the present invention and existing single block hammer crusher:

Use of the present invention has enlarged the scope of application of hammer mill, and production capacity improves, and power consumption reduces, and parts life-span prolongs, and is safe and reliable.

Claims (8)

1, a discharge device that has the hammer mill of discharge grate is characterized in that discharge device is discharge grate along both sides one side of tup revolution circular arc direction for the security door opposite side.

2, discharge device as claimed in claim 1 it is characterized in that the combing length direction of seam is consistent with the material movement direction, and being called forward combs stitches.

3, discharge device as claimed in claim 1 or 2 is characterized in that double-edged fine-toothed comb has the inner surface of profile of tooth.

4, the discharge device as claimed in claim 1 or 2 end that it is characterized in that being the security door of cambered surface is fixed (can not move but can rotate) other end and can be rotated around stiff end, and its relies on certain external force such as gravity or spring force keeping normally off.

5, the discharge device as claimed in claim 3 end that it is characterized in that being the security door of cambered surface fix (can not move, but can rotate) other end can be around the stiff end rotation, its relies on certain external force such as gravity or spring force keeping normally off.

6, it is characterized in that to have on the security door seam of forward combing as claim 1 or 2 or 5 described discharge devices.

7, discharge device as claimed in claim 3 is characterized in that can having on the security door seam of forward combing.

8, discharge device as claimed in claim 4 is characterized in that can having on the security door seam of forward combing.

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