CN105032286A

CN105032286A - Rotor structure of wet method pelletizer

Info

Publication number: CN105032286A
Application number: CN201510564106.9A
Authority: CN
Inventors: 魏振文; 刘汝刚; 崔建波; 李环玉; 刘继成
Original assignee: QINGDAO DORIGHT CO Ltd
Current assignee: QINGDAO DORIGHT CO Ltd
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2015-11-11
Anticipated expiration: 2035-09-08
Also published as: CN105032286B

Abstract

The invention provides a rotor structure of a wet method pelletizer. The rotor structure is composed of a rotor shaft, stir tooth base tubes, A-type flat stir teeth, B-type flat stir teeth and the like. The main problems of a rotor structure of an existing pelletizer are characterized in that due to the fact that stir teeth are cylindrical, carbon black is pushed aside to the two horizontal sides when the stir teeth move to collide with the carbon black, a rotor only achieves the stirring function but does not achieve the axial conveying function, and the carbon black is axially conveyed completely depending on pushing of a guiding spiral plate behind the carbon black; consequently, a material bed in a pelleting cylinder is certainly thickened through structure operation; the carbon black in gaps between the stir teeth and the wall of the cylinder is maximally affected by the thickening of the material bed; the carbon black does not achieve the condition for rolling along the wall of the cylinder for pelleting, and most of the carbon black is directly extruded and discharged without being fully stirred; accordingly, the pelleting quality is not high, and especially the fine powder content exceeds the standard. In order to solve the problems, in short, the cylindrical stir teeth are all changed into the flat stir teeth, each stir tooth can stir the carbon black and axially convey the carbon black at the same time through design and installation, and a material bed in a pelleting cylinder cannot be thickened.

Description

A kind of wet granulation motor rotor structure

Technical field

The present invention relates to a kind of carbon black production equipment, especially carbon black wet granulator.

Background technology

Current carbon black wet granulation motor rotor structure has following basic characteristics: 1. it is cylindrical for stirring odontoid, tooth top or make truncated cone shape to reduce to stir the thickness of tooth head; 2. each stir tooth with screw thread be welded on the epitrochanterian tooth base tube that stirs and be connected, be threaded adjustable stirring tine length; 3. stir tooth row and be classified as double helix, helix angle about 22.5 degree, adjacent two floor projection distances of stirring tooth center line approximate the size that 1.7 times are stirred tooth head diameter; 4. rotor on the rotor below corresponding comminutor charging aperture, have guide spiral plate to be welded on the inclined tooth top position of the waist stirring tooth of each helix, so that can push front in time the carbon black powder fallen from charging aperture; 5. double helix stirs each helix of tooth, from the beginning to the end with one whole reinforcing bar stir tooth waist location each stir tooth welding be concatenated into one, one is solve the locking thread problem that each stirs tooth, ensures not stir the generation that tooth case accident is even stirred in tine length change; Two is play booster action with connecting before and after reinforcing bar to stirring tooth.

The subject matter of above-mentioned traditional comminutor rotor structure is, owing to stirring in gear mutation, adjacent two floor projections of stirring tooth center line are apart from approximating the cause that 1.7 times are stirred tooth head diameter, and the floor projection of every bar helix of comminutor rotor is all a comb; The shape of stirring tooth head because each is cylindrical or truncated cone shape, stir tooth collision carbon black time be that carbon black is on average pushed aside to the both sides stirring the tooth direction of motion; It can thus be appreciated that this comb only has agitating function and does not have axial conveying function; The axial conveying of carbon black has the promotion of guide spiral plate entirely rearward; Get into smooth and material bed accumulation in granulating cylinder must be caused to thicken; Blocked up material bed has the greatest impact to this part carbon black stirred in tooth and barrel gap; Because material bed is blocked up, the condition that this part carbon black can not get " along barrel rolling granulation ", mostly without fully stirring direct extruding and discharging; This is that wet granulator product quality is not high, especially the main cause that exceeds standard of fine powder content.

Summary of the invention

In order to solve the problem, this programme manages to make each existing agitating function of tooth that stirs have again conveying function, thickeies to avoid material bed the adverse effect brought granulation quality.

The technical solution adopted for the present invention to solve the technical problems is: a kind of wet granulation motor rotor structure, by armature spindle, stirs tooth base tube, and A type is flat stirs tooth, and Type B is flat stirs tooth, nut, reinforcing bar and scraper composition; It is characterized in that: weld on the surface at the hollow beam barrel of armature spindle and numerously tappedly stir tooth base tube, these stir tooth base tube and arrange by double helix, about helix angle α=11.25 degree, on helix, adjacent two floor projection distances of stirring tooth center line approximate that A type is flat stirs 1.7 times that tooth correctly installs rear floor projection width; Bifilar helix below corresponding comminutor charging aperture stir on tooth base tube, install that Type B is flat stirs tooth, the remaining tooth base tube that stirs installs that A type is flat stirs tooth; Respectively stir the setting angle of tooth flat horizontal surface, except corresponding comminutor discharging opening center line later and except, all flat horizontal surfaces stirring tooth are all along hand of helix; Article two, helix respectively with a reinforcing bar at the flat waist location stirring tooth, on whole piece helix stir tooth welding be concatenated into one; Two scrapers are arranged on the hollow beam barrel two ends of armature spindle.

Above-mentioned A type is flat stirs tooth and Type B is flat stirs tooth, and it is characterized in that: flat tooth Lower Half of stirring is full thread stud, the first half is dull and stereotyped; Dull and stereotyped front upper portion profile is arc line shaped, and dull and stereotyped vertical cross section both ends of the surface profile is circular arc; The flat thickness stirring tooth flat board takes traditional cylindrical to stir tooth tooth tip diameter size; Flat tooth sheet width the stir tooth sheet width more flat than A type of stirring of Type B is slightly wider, and other are identical.

Two helixes of this programme rotor remain a comb, still have agitating function; But stir the arc surface head-on stirring increment face apart from flat of the tooth direction of motion and also have the flat plane of tooth along helix of stirring outward, this stirs with regard to making the function that tooth adds axial conveying while having agitating function.

This programme helix angle is about the half of traditional angle, this has following benefit: one is to make flat plane of stirring tooth its entrance angle when colliding carbon black a little bit smaller, carbon black is more easily allowed to stir the granulation of tooth plane rolling along flat, two is to alleviate rotor turns resistance, and three is to alleviate rotor vibrations.

The beneficial effect of the invention is, due to traditional cylindrical tooth that stirs is changed into and has the flat of suitable plane width and stir tooth, stirring gear mutation and installing the agitating function both remaining rotor, add again the function of the axial conveying of rotor, therefore granulator can avoid the formation of the excessive material bed of thickness; This point is significant to this part carbon black stirred in tooth and barrel gap; Due to the reason that material bed is significantly thinning; this part carbon black just can be stirred the stirring of between cog ground connection like a cork and get up along barrel rolling to join granulation ranks; blocked up being forced to of material bed is avoided to extrude without granulation discharging; effectively can reduce the fine powder content of carbon black, stable granulation quality and the operating efficiency improving comminutor.

Accompanying drawing explanation

Fig. 1 ~ Fig. 4 is this programme structural representation and embodiment.

Fig. 2 is Fig. 1 " A-A " sectional view.

Fig. 3 is Fig. 1 " B " direction view.

Fig. 4 is Fig. 3 side view.

Fig. 5 is Fig. 3 " D-D " sectional view.

Fig. 6 is Fig. 1 " C " direction view.

Fig. 7 is Fig. 6 side view.

Fig. 8 is Fig. 6 " E-E " sectional view.

1. armature spindles in figure, 2. stir tooth base tube, and 3.A type is flat stirs tooth, and 4.B type is flat stirs tooth, 5. nut, 6. reinforcing bar, 7. scraper, X. comminutor charging aperture center line, Y. comminutor discharging opening center line, α. stir tooth bifilar helix angle.

Detailed description of the invention

A kind of wet granulation motor rotor structure of this programme, by armature spindle 1, stir that tooth base tube 2, A type is flat stirs tooth 3, Type B is flat stirs tooth 4, nut 5, and reinforcing bar 6 and scraper 7 form.

Rotor erection sequence is as follows: be 1. installed to the hollow beam barrel of armature spindle on the surface stirring tooth base tube by the arrangement of set double helix; 2. nut 5 is installed to all A types and Type B is flat stirs on the stud of tooth; 3. A type with Type B is flat stirs tooth by design and installation to stirring on tooth base tube; 4. adjust root diameter, and make flat tooth plane of stirring along helix; A small amount of flat plane of stirring tooth after comminutor discharging opening center line Y can not along helix; 5. the stud that tooth is stirred in qualified rear nut check is adjusted; 6. each helix with a reinforcing bar all stir tooth welding be together in series; 7. two scrapers are installed.

Type B below corresponding comminutor charging aperture is flat stirs tooth, because contact is carbon black dry powder, not yet mixes with granulation water, with conveying for main stirring is auxiliary, so the flat sheet width of stirring tooth of Type B sheet width of stirring tooth more flat than A type is slightly as well wider.

Claims

1. a wet granulation motor rotor structure, by armature spindle, stirs tooth base tube, and A type is flat stirs tooth, and Type B is flat stirs tooth, nut, reinforcing bar and scraper composition; It is characterized in that: weld on the surface at the hollow beam barrel of armature spindle and numerously tappedly stir tooth base tube, these stir tooth base tube and arrange by double helix, about helix angle α=11.25 degree, on helix, adjacent two floor projection distances of stirring tooth center line approximate that A type is flat stirs 1.7 times that tooth correctly installs rear floor projection width; Bifilar helix below corresponding comminutor charging aperture stir on tooth base tube, install that Type B is flat stirs tooth, the remaining tooth base tube that stirs installs that A type is flat stirs tooth; Respectively stir the setting angle of tooth flat horizontal surface, except corresponding comminutor discharging opening center line later and except, all flat horizontal surfaces stirring tooth are all along hand of helix; Article two, helix respectively with a reinforcing bar at the flat waist location stirring tooth, on whole piece helix stir tooth welding be concatenated into one; Two scrapers are arranged on the hollow beam barrel two ends of armature spindle.

2. a kind of wet granulation motor rotor structure according to right 1, is characterized in that: A type is flat stirs tooth and Type B is flat stirs tooth, and its Lower Half is full thread stud, and the first half is dull and stereotyped; Dull and stereotyped vertical long laterally narrow, dull and stereotyped front upper portion profile is arc line shaped, and dull and stereotyped vertical cross section both ends of the surface profile is circular arc; The flat thickness stirring tooth flat board takes traditional cylindrical to stir the size of tooth tooth tip diameter size; Flat tooth sheet width the stir tooth sheet width more flat than A type of stirring of Type B is slightly wider.