CN2134897Y - Helical rank-grass remover - Google Patents

Abstract

The utility model provides a spiral wheat concentration device for a flour mill, which separates the round foreign matters of black cockle weeds, etc. From the wheat by gravity flow. The feed tray of the spiral wheat concentration device for a flour mill is composed of an adjustable eccentric sleeve, a conical tray, etc. The materials can uniformly flow into spiral blade groups no matter what direction are the materials fed. The reached blade velocity is higher than 2 m/s. The spiral machine core of the spiral wheat concentration device for a flour mill is stamped and welded by cold-rolled sheets, and the line type is exact. The screw pitch of the spiral core is big, the diameter is big, and an outer spiral line fits the edge of the material flow, and is a cone-shaped logarithmic spiral line. The velocity of the center of the material flow is higher than 1.35 m/s and the production is bigger than or equal to 4 t/h. The separation efficiency is high, and the cockle weeds are pure.

Description

Helical rank-grass remover

The utility model relates to a kind of flour mill wheat spiral selecting device, and this device is power not, and circular impurity such as black buckwheat contained in the wheat are isolated in the material gravity flow.

Existing wheat selecting device has disc-type, drum-type and spiral (being commonly called as spiral seed separator) by the operation principle branch.The bag hole of video disc, drum-type device groundwork portion body video disc, cylinder needs high alloy hot investment casting or the punching press of high duty alloy steel plate, complex process, parts price height, and wear-resisting phase short (about 1 year), be mixed with broken wheat in addition in buckwheat that clears, flour mill is difficult to distinguish processing.Spiral seed separator is to utilize wheat and garden shape impurity surfaces characteristic such as black buckwheat, shape different, in screw inclined plane slide down movement locus difference, and the device that garden shape impurity is separated, advantage is not wanted power, effect is also good, and shortcoming is that output is low, has only 0.4t/h, not airtight, dust is many, noise is big.Bring up to 1～1.1t/h through the improved road spiral seed separator outputs of throwing, but its output still is low, technological design selects for use equal output platform number more than other type more, volume is big, actual triage operator difficulty, and high to the requirement of preceding road equipment cleaning efficient, otherwise charging aperture easily stops up.The spiral seed separator movement is that the manual field boundary now of 0.5～0.6mm galvanized iron sheet is made, and characterisitic parameter is difficult for unified standard, the effect that influence separates.

Task of the present utility model is to provide a kind of spiral of new construction to remove the buckwheat device, this device operation principle is similar to spiral seed separator, but the running parameter difference, the screw machine core material adopts cold-rolled steel sheet mold pressing welding, technological parameter is accurate, characteristics such as feeding mechanism, secondary flow separate improvement, have specific duty height, airtight air draught, and noise is low, compare with other form selecting device with Isoquant, volume, floor space are little, and triage operator is convenient, and it is supporting to be suitable for big-and-middle-sized flour mill.

The utility model is achieved in that wheat earlier through screening cleaning fag end, and careless bar etc. are assorted greatly, enter this device then.Wheat is not through feed pipe equably by awl dish stream, it is assorted that air draught simultaneously separates light ash, the wheat falling bodies quicken to flow into the spiral leaf, transfer at a high speed and rotatablely moving through the typing helix, shape impurity accelerated motion track on screw inclined plane in garden is big, constantly separate rolling out the leaf road, be microscler wheat and then flow to the outlet discharge along leaf road speed stabilizing.The buckwheat leftover bits and pieces mixture of separating is slipped by the bottom collection bucket and delivers to downstairs, and pure buckwheat and complete wheat are isolated in the import of the secondary flow separator of this device.

The utility model spiral movement specific duty is 〉=4t/h, removes buckwheat efficient 〉=75%, and Qiao Zizhong contains wheat＜4%, the wear-resisting phase of spiral movement〉2 years.

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1. be that the spiral that the utility model provides removes buckwheat machine structural representation.

After containing wheat (1) the process upper floor equipment cleaning of buckwheat, enter Taper Pipe (2) from elephant trunk, wheat compiles rectification through Taper Pipe, fall adjustable eccentric Taper Pipe (3), rectification is vertically fallen on the conehead (4) once more, evenly spread on the awl dish (6), (5) are the entry table shell, and wheat evenly distributes from awl dish (6) and falls on 12 groups of spiral leaves in top of spiral movement (8).

The utility model entry table design meets flour mill's material elephant trunk and installs actually, and material is no matter from which direction come, rotate adjustable eccentric Taper Pipe (3) all material can be transferred in, straightening is evenly distributed on the awl dish; Flowing down material by awl dish (6) has certain falling bodies height (18), has guaranteed that material arrives the terminal velocity of top helical blade〉2m/s, this helps improving device output and separative efficiency.

This device is provided with inlet scoop (17), when material from awl dish (6) even dispersion train following time, it is assorted to inhale light ash, laying dust in the minimizing machine; Movement (8) is enclosed in the housing (7), and dust is not outer to be raised because air draught can be controlled.Dust laden air is gathered by inlet scoop (17) and goes to airduct (16) to deduster to separate.

The wheat falling bodies quicken to flow into spiral movement (8) afterwards, transfer the high-speed screw motion to, the material flow central speed〉1.35m/s, garden shape impurity is because the centrifugation accelerates movement locus is big, the road of separated flow leafing constantly is microscler wheat (13) and isolates the flow direction outlet discharge of assorted back, most garden.

The utility model spiral movement (8) feature: the spiral leaf is the manufacturing of 1.5mm cold-rolled steel sheet mold pressing welding procedure, and line style is accurate; The nearly mandrel of spiral movement place is a cylindrical spiral, pitch S=500mm, plain line of helical surface and horizontal plane angle of inclination beta=48 °, the helical margin curve is the taper logatithmic spiral, it is characterized by: movement top maximum gauge φ 630mm, 22 ° of cone angles, diameter minimum place in last middle part is 420mm, increase 454mm to the bottom, 1.5 ° of cone angles for φ; Spiral characteristic decision material running radius R.155mm, and the long 4.14～5m of materials flow center helical, it is 30～40mm that materials flow edge and blade edge keep spacing range.So just guaranteed the separative efficiency raising simultaneously increasing substantially output, met Ministry of Commerce's standard, controlled buckwheat leftover bits and pieces mixture amount simultaneously, alleviated the get a foothold workload of cleaning of flour mill 1～2%.

Buckwheat leftover bits and pieces mixture is slipped by base collection bucket (9) and delivers to the secondary flow separator import (10) of this device downstairs, falls on the spiral (11), and the complete wheat (15) that contains a small amount of buckwheat comes out from inner ring, collects or is handled by the main frame core.Pure buckwheat (14) is discharged from the outer ring to outlet.

The cold-rolled steel sheet manufacturing of the utility model secondary flow separator highly is lower than 1600mm, can lift or platform on install, save plant area.Its separative efficiency 〉=85%, treating capacity＜70kg/h, separator portion exit is provided with adjustable dividing plate (12), makes the buckwheat of separating pure.

Claims (5)

1, the spiral used of the selected wheat of a kind of flour mill removes the buckwheat machine, by entry table (2) to (6), the spiral movement (8) of band housing (7), and secondary flow separator (10) to (15) is formed, it is characterized in that entry table (2) to (6) on spiral movement (8) top, the base collection bucket (9) of spiral movement (8) bottom is connected with secondary flow separator import (10).

2, remove the buckwheat machine according to the described spiral of claim, it is characterized in that being provided with in the entry table Taper Pipe (2), adjustable eccentric Taper Pipe (3), conehead (4) and awl dish (6), and design has falling bodies height (18).

3, remove the buckwheat machine according to the described spiral of claim, it is characterized in that spiral movement (8) is cold-rolled steel sheet mold pressing welding; Line style is: the paraxial place of helix core is a cylindrical spiral, and helix core outer rim curve is the taper logatithmic spiral, and is approaching equidistant with the material flow edge.

4, remove the buckwheat machine according to claim 1,3 described spirals, it is characterized in that running radius in material flow center on the spiral leaf 155mm.

5, according to claim 1, described spiral removes the buckwheat machine, it is characterized in that secondary flow separator (10) to (14) is the cold-rolled steel sheet manufacturing, highly＜and 1600mm separator lower part outlet place is provided with adjustable dividing plate (12).

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