CN2587619Y - Screw agitator - Google Patents

Abstract

The utility model relates to a stirring device which stirs by adopting a spiral stirrer. The stirring device is used for the industry of building materials. Problems in the production of cement (gypsum) and fiber (shaving) plates at present that raw materials can only be stirred intermittently, the device is complicated, efficiency is low, the stir is nonuniform, cleaning is difficult, continuous automated production is impossible, etc. are solved. The stirring device is mainly and technically characterized in that two spiral shafts which are rotated in the same direction inside a machine casing are utilized to mesh mutually for rotating. Stirred materials inside a machine body are subjected to the functions of cutting, extrusion, split-flow mergence, stretching, etc., and are mixed sufficiently so as to cause the stirred materials to obtain some characteristics to be adapted for the requirement of producing the cement (gypsum) and fiber (shaving) plates in the industry of building materials. The produced cement (gypsum) and fiber (shaving) plates are ensured to obtain a prospective quality requirement.

Description

Screw mixer

(1) technical field: the utility model relates to plant equipment, is specially a kind of screw mixer.

(2) background technology: at present, cement-bonded wood chipboard production line, the gypsum particle board production line of introducing from developed country no matter, or cement-bonded wood chipboard production line, the gypsum particle board production line of domestic-developed, the cement that is adopted (gypsum), string (wood shavings) mixer are batch agitator.Batch agitator not only stirring efficiency is low, main shortcoming is that stirring is inhomogeneous, be difficult to realize automated production, and the cement gypsum solidfied material of accumulation in the machine is difficult to cleaning, the accidental of solidfied material will have a strong impact on production line ordinary production and end product quality.Agitating procedure has become " bottleneck " of present restriction cement (gypsum), the development of fiber (wood shavings) plate complete producing technology, it also is unique operation that can not continuous operation in the above-mentioned production line, this problem also badly influences the manufacturing cost of cement (gypsum) string (wood shavings) plate simultaneously, and the efficient and the annual production of complete set of equipments, and then be related to can the building wood-based plate replace usefulness earth sintering with cheap cost, good quality brick and tile.

(3) summary of the invention: the purpose of this utility model is: with simple efficient mixing plant, under the prerequisite that cuts down the consumption of energy, realize stirring the operation serialization.The purpose of this utility model is achieved in that it comprises helical axis (1), casing (2), charging aperture (3), reaches screw channel (4), spiral shell rib (5) discharging opening (6).Motor by decelerator drive in the casing (2) two in the same way, the helical axis (1) of rotation synchronously, have charging aperture (3) and discharging opening (6) on the casing, helical axis is provided with spiral shell rib (5), forming (4) two helical axis centre-to-centre spacing of screw channel between two spiral shell ribs is I, directly be d at the bottom of the spiral, the spiral external diameter is D, and helical pitch is T, the back lash is S between two helical axis spiral shell ribs, and a spiral shell rib top and another spiral shell rib root gap are E.Two follow helical axis centre-to-centre spacing I and are d＜I＜D in closing between footpath d, the spiral outer diameter D at the bottom of the spiral.

(4) description of drawings: Fig. 1 is a screw mixer structural principle schematic diagram, and he is made of three basic views; Fig. 2 is the screw shaft structure schematic diagram, and it has reflected several basic parameters of helical axis; Fig. 3 is two luer engages with gap schematic diagrames, and it has reflected the intermeshing position of two spirals relation; Fig. 4 is a material movement track schematic diagram in the screw mixer course of work; Fig. 5 is that the screw mixer material diversion converges the principle key diagram.

(5) specific embodiments: in casing (2) two in the same way, the helical axis (1) of rotation synchronously, have charging aperture (3) and discharging opening (6) on the casing, helical axis is provided with spiral shell rib (5), forming (4) two helical axis centre-to-centre spacing of screw channel between two spiral shell ribs is I, directly be d at the bottom of the spiral, the spiral external diameter is D, and helical pitch is T, the back lash is S between two helical axis spiral shell ribs, and a spiral shell rib top and another spiral shell rib root gap are E.Two follow helical axis centre-to-centre spacing I and are d＜I＜D in closing between footpath d, the spiral outer diameter D at the bottom of the spiral.

Equipment of the present utility model is like this work: motor by decelerator drive in the casing 2 (as shown in Figure 1) two in the same way, the helical axis 1 of rotation synchronously, have charging aperture 3 and discharging opening 6 on the casing, helical axis is provided with and forms screw channel 4 between spiral shell rib 5, two spiral shell ribs.When cement (gypsum), string (wood shavings) and water three components enter in the body by charging aperture, because the double helix axle engagement system that the utility model adopted is vertically open, material will move (as shown in Figure 4) with the ∞ type channel cycle that two helical axis are surrounded along casing, on macroscopic view, two helical axis whenever rotate a circle, material is done once the shuttling movement along ∞ type passage, and advances a pitch to the discharging opening direction.But this ahead running is not simple conveying effect, in fact, material is subjected to the shearing of spiral shell rib, extruding, stretching, compression in the screw channel of rotation engagement, material in the helicla flute on helical axis is become two strands of material bundles (as shown in Figure 5) by the spiral shell rib shear extrusion on another root spiral at the volley, enters respectively in two screw channels on another helical axis; Simultaneously, enter in the screw channel on another spiral material with from different spiral fluteds in addition one material flow converge to together, the mixture stream that is produced is subsequently in next meshing point separately.This material flow will take place twice by the phenomenon that one is divided into two strands whenever material circles around ∞ type passage, the continuous partial flow of this material and merge in helical axis rotation n and change and just have 2 ⁿInferior repetition, if speed of screw shaft is 20r/min, then per minute has 2 ²⁰1048576 mixed processes just, the mixed interface that this will increase considerably material is beneficial to and realizes evenly mixing.Since material in casing along the continuous motion of ∞ type passage, no buildup dead angle in the body, so equipment has self-cleaning function, the normal cleaning that need not in service, adaptation automated production needs.Can under the low energy consumption condition, blend and be fit to the raw material that building trade is produced needs.

Claims (2)

1, a kind of screw mixer, it comprises helical axis (1), casing (2), charging aperture (3), reaches screw channel (4), spiral shell rib (5) discharging opening (6).It is characterized in that: in the casing (2) two in the same way, the helical axis (1) of rotation synchronously, have charging aperture (3) and discharging opening (6) on the casing, helical axis is provided with spiral shell rib (5), forms screw channel (4) between two spiral shell ribs.Two helical axis centre-to-centre spacing are I, directly are d at the bottom of the spiral, and the spiral external diameter is D, and helical pitch is T, and the back lash is S between two helical axis spiral shell ribs, and a spiral shell rib top and another spiral shell rib root gap are E.

2, according to claim 1 described a kind of screw mixer, it is characterized in that: two follow helical axis centre-to-centre spacing I and are d＜I＜D in closing between footpath d, the spiral outer diameter D at the bottom of the spiral; Two helical axis pitch T=20～300mm.Back lash S=10～100mm between two helical axis spiral shell ribs, spiral shell rib top and another spiral shell rib root gap E=1～20mm.

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