CN202377034U

CN202377034U - Hammer mill

Info

Publication number: CN202377034U
Application number: CN2011205455147U
Authority: CN
Inventors: 王跃强; 阮志礼
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-08-15
Anticipated expiration: 2021-12-23

Abstract

The utility model discloses a hammer mill, which comprises a feeding roll assembly, a shell and a rotary hammer assembly. The feeding roll assembly is positioned on the upper portion of the hammer mill, the shell is positioned on the lower portion of the hammer mill, the rotary hammer assembly is positioned in the shell and consists of a rotary shaft and 99 hammer blocks, and one end of each hammer block is mounted on the rotary shaft. The number of groups of the hammer blocks of the hammer mill and the total number of the hammer blocks are increased, the thump frequency is increased, accordingly, a film is directly in hammer-milling by the hammer blocks without being repeated thumped after being fed via the feeding roll assembly, a discharge sieve is omitted, the structure is simplified, and the problem that secondary adhesion of discharged materials due to local blockage, accumulation and squeezing of the discharge sieve affects the processing quality and the efficiency is avoided. In addition, the hammer blocks are made of stainless steel instead of original alloy structural steel and are abrasion-resistant and sharp, the service life of each hammer block is prolonged, and the processing efficiency of the hammer blocks is enhanced.

Description

Hammer-mill

Technical field

The utility model relates to the rubber processing field, particularly a kind of hammer-mill.

Background technology

Hammer-mill is standard natural rubber ISO2000:1989 (GB/T8081-1999) series of products, one of main process equipment of indispensability in the suitability for industrialized production.The technological process of mark glue production line granulating working procedure and the operation principle of traditional hammer-mill can be sketched and be: raw material (natural rubber grumeleuse) is pressed crape through the brute force of 9-12 platform crepe machine; Dehydration forms an infinite in length after the impurity elimination, width certain (700mm); Thickness calibration (5mm); Water content≤32%, impurity content≤0.462%, the uniform white natural rubber band of surface detail.As depicted in figs. 1 and 2, send into the top feeding roller assembly 11 of hammer-mill through conveyer, after roll-in; Get into the granulation chamber 12 of hammer-mill bottom, have in the chamber one be in the high speed rotation status commentaries on classics hammer assembly 13, six groups of activities hammer pieces 14 installing it on (this type 1-8 ton/hour be six groups of hammer pieces dispose); Not only momentum is huge, knocking frequency high (84000 times/minute), and also sharp; Contact moment when hammering piece 14 into shape with the film that feeding roller extrudes, the part momentum transfer has been given film, produces violent collision; Cutting effect makes film be crashed to pieces into granule, sieves 15 mesh from the discharge of bottom and discharges; If can not pass through the big fragment of discharge sieve aperture, wait until on the compass screen surface through knocking repeatedly, till passing through the discharge sieve aperture.It is fine just to have become elasticity through the mach film of sledge mill like this, even-grained white rubber particle.Send into next process through induction system then.

The defective of this hammer-mill mainly is the following aspects:

1. hammer the piece problem into shape.The material of the hammer piece 14 of this hammer-mill is the structural alloy steel manufacturing; In use be easy to take place corrosion phenomena; Rupture easily after the corrosion, drop on after the fracture on the discharge sieve 15 and thumped by other hammer piece 14, the result breaks whole hammer pieces 14; Also break stainless steel discharge sieve 15 simultaneously, have a strong impact on the service life of this hammer-mill.

2. the problem of thumping and bringing repeatedly.In actual the use, also inhomogeneous through the micelle of knocking, what granularity was big slightly just can not discharge from sieve aperture; Stay and to cause discharge sieve 15 local obstructions on the compass screen surface; The obstruction of screen cloth has aggravated the not smooth of discharge again, and so vicious circle finally causes screen cloth to crumble or the vexed car of rotor.Only be to stop production line after work a period of time to the solution of this problem in using now, the manual nest had both had a strong impact on crudy and working (machining) efficiency, and security simultaneously is also very poor.

3. discharge secondary adhesion phenomenon.Operation principle by this hammer-mill can find out, the broken granularity of sledge mill should be able to flow out from sieve aperture less than the micelle of sieve diameter smoothly; But we think in actual use with conscientious simulation back through this process is anatomized, all from sieve aperture, extruded regardless of different kinds of all particles, and in the process of extruding; Because rubber particles elasticity, it is good to extrude in the process of recovering volume in the back adhesive, and the broken particle of sledge mill adhesion once more becomes the group more much bigger than sieve aperture to discharge; This has just explained and has perplexed everybody always; Why through the high speed sledge mill, also have after sieving so many, the query of so big micelle.The existence of these micelles directly has influence on down drying process one, causes dehydrating difficulty, and water content exceeds standard, and product is defective maybe can only to repeat the drying of doing over again, and this will produce very big economic loss, have a strong impact on crudy and working (machining) efficiency.

The utility model content

The technical problem that the utility model solves provides a kind of hammer-mill that crudy and working (machining) efficiency, long service life can be provided.

For achieving the above object, according to the utility model a kind of hammer-mill is provided, comprising: superposed feeding roller assembly be positioned at the housing of bottom, and the commentaries on classics hammer assembly that is positioned at enclosure interior; Changeing the hammer assembly comprises: a rotating shaft and an end are installed in the hammer piece in the rotating shaft, and the hammer piece is 99.

Further, 99 hammer pieces are divided into nine groups, along circumferentially being uniformly distributed with of said rotating shaft.

Further, the material of hammer piece is a stainless steel.

Further, the hammer piece is 100000 times/minute to the knocking frequency of charging.

Technical scheme based on the utility model; Because the hammer piece group number of this hammer-mill and the increase of total quantity; Improved the knocking frequency; Make film after the feeding of feeding roller assembly, directly hammer is broken to be hammered into shape piece, must not thump repeatedly; Thereby omitted the setting of discharge sieve; Simplify the structure, avoided stopping up because of the discharge sieve is local and piling up extruding and cause the discharge secondary adhesion, influence crudy and efficient; In addition, the material of hammer piece replaces original structural alloy steel by stainless steel, and more corrosion resistant and sharp has improved service life and the working (machining) efficiency of hammering piece into shape.

Description of drawings

Fig. 1 is the broken section structural representation of existing hammer-mill master apparent direction;

Fig. 2 is the broken section structural representation of existing hammer-mill side-looking direction;

Fig. 3 is the broken section structural representation according to the hammer-mill master apparent direction of the utility model;

Fig. 4 is the broken section structural representation according to the hammer-mill side-looking direction of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of the specific embodiment.

Referring to Fig. 3 and Fig. 4, this hammer-mill comprises: superposed feeding roller assembly 2 and the housing 3 that is positioned at the bottom, and change hammer assembly 4.Wherein, feeding roller assembly 2 is used for the roll-in charging.Housing 3 surrounds granulation chamber 31, change hammer assembly 4 and be horizontally installed in the granulation chamber 31, and the bottom is not provided with the discharge sieve.

As shown in Figure 4, change hammer assembly 4 and comprise: a rotating shaft 41 and an end are installed in the hammer piece 42 in the rotating shaft 41; One end of rotating shaft 41 is fixed with belt pulley 43; As shown in Figure 3, hammer piece 42 is divided into nine groups, and along circumferentially being uniformly distributed with of this rotating shaft 41,11 every group hammer pieces 42 have 99.Totally six ten six become nine groups 99 hammer pieces to the hammer pieces with six groups of original commentaries on classics hammer assembly, make the knocking frequency of 42 pairs of chargings of hammer piece, brought up to about 100000 times/minute just by original 84000 times/minute; The increase of hammer piece group number and total quantity, the raising of knocking frequency make film after 2 feedings of feeding roller assembly, and directly hammer is broken to be hammered into shape piece 42; Must not thump repeatedly; The size of granularity is only relevant with feeding roller speed and spinner velocity, as long as the two rotating speed is constant, the granular size of particle is just constant; And discharge is that free discharge does not exist the local obstruction of discharge sieve and piles up the extruding phenomenon; Therefore micelle is very loose behind the discharge, is very beneficial for the reprocessing of next process, need not to be provided with discharge again and screens; In order to alleviate the complete machine load, done suitable adjustment on the rotating speed simultaneously.The material of hammer piece 42 is a stainless steel, is shaped through numerical control cutting, replaces the whole accurate cast molding of original structural alloy steel.It is serious that this has not only solved the corrosion of hammer piece, and the shortcoming of easy fracture has also made full use of sharp, the wear-resisting character that stainless steel itself is had, and after actual verification, finds that effect is fine, do not exist hammer not descend the phenomenon of micelle.This changes the various types of hammer assembly applicable to 1-8 ton/hourly output.

Because the hammer piece group number of this hammer-mill and the increase of total quantity; Improved the knocking frequency; Make film after the feeding of feeding roller assembly; Directly hammered into shape broken by the hammer piece; Must not thump repeatedly, thereby the setting of having omitted the discharge sieve simplifies the structure; Avoided stopping up because of the discharge sieve is local and piling up extruding and cause the discharge secondary adhesion, influenced crudy and efficient; In addition, the material of hammer piece replaces original structural alloy steel by stainless steel, and more corrosion resistant and sharp has improved service life and the working (machining) efficiency of hammering piece into shape.

More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.

Claims

1. a hammer-mill is characterized in that, comprising: superposed feeding roller assembly be positioned at the housing of bottom, and the commentaries on classics hammer assembly that is positioned at said enclosure interior; Said commentaries on classics hammer assembly comprises: a rotating shaft and an end are installed in the hammer piece in the said rotating shaft, and said hammer piece is 99.

2. hammer-mill according to claim 1 is characterized in that, said 99 hammer pieces are divided into nine groups, along circumferentially being uniformly distributed with of said rotating shaft.

3. hammer-mill according to claim 1 is characterized in that, the material of said hammer piece is a stainless steel.

4. according to each described hammer-mill in the claim 1 to 3, it is characterized in that said hammer piece is 100000 times/minute to the knocking frequency of charging.