CN102359394A - Method for determining production capacity of filler slurry mixing equipment - Google Patents

Abstract

The invention discloses a method for determining production capacity of filler slurry mixing equipment. The method comprises the following steps of: determining the rotating speed of blades; determining the conveying capacity of inner and outer blades; and determining the capacity of mixing equipment. The method provided by the invention has the advantage of scientifically and reasonably determining the capacity of a twin-screw mixing conveying equipment.

Description

A kind of method of definite filling slurry mixing plant production capacity

Technical field

The present invention relates to a kind of definite mine double helix and stir conveying equipment production capacity, especially a kind of method of definite filling slurry mixing plant production capacity.

Background technology

Along with the method for mining by the way of filling use increasingly extensive; The increasing at home mine of filling mixing plant is applied, and for barren rock, tailings are transported to the down-hole, needs through a whipping process; What used at present a lot of mines is that double helix stirs conveying equipment; It stirs conveying capacity generally is that the empirical data that the parameter that provides according to manufacturer or similar mines provide is chosen, and is a fuzzy scope, and the concrete numerical value of neither one; Therefore, stirring the definite of conveying capacity is a difficult problem in puzzlement mine all the time.This patent has drawn a kind of new method of definite double helix stirring conveyor stirring capacity through to the structure of equipment, the analysis of operation mechanism, selects mixing plant to bring facility to the mine.

Summary of the invention

The object of the present invention is to provide a kind of method of definite filling slurry mixing plant production capacity, this method can be to the check of mine filling system, and its accuracy is higher.

Technical scheme of the present invention is: a kind of method of definite filling slurry mixing plant production capacity, and its step:

Confirm blade rotational speed

Blade all is fixed on the shaft, and angular velocity can be confirmed that according to the inside and outside blade radius R, the r that record, the rotating speed that draws blade is ω R, ω r then by the frequency that drives motor, and the linear velocity of blade can be decomposed into two velocity component V ₁, V ₂

According to trigonometric function relation, V _{Outer 1}=ω R

, V _{Outer 2}=ω R

Draw the linear velocity of intra vane then according to the intra vane diameter that records, V _{Interior 1}=ω r , V _{Interior 2}=ω r

Confirm inside and outside blade conveying capacity

Can be known that by motion analysis outer leafs promotes slip and moves to discharging opening, intra vane promotes slip and moves to charging aperture, and interior outer leafs makes slip intersect convective motion, reaches mixing;

At (0～r ₁) on the length, being shaft, no flow, flow are 0;

Confirm the intra vane conveying capacity: flow is:

, for negative;

Confirm the outer leafs conveying capacity; Flow is: , for just.

In the formula: 2---agitation tank is divided into left and right sides two parts;

Q---flow, m3/h;

R---external spiral blade diameter, m;

R---internal helical blades diameter, m;

r ₁---shaft diameter, m;

ω---shaft angular velocity, rad/s;

α---blade angle.

(3), confirm the mixing plant ability

The frequency of measuring motor obtains the interior outer radius of the rotational angular velocity and the blade of blade, promptly calculates through following formula, and the ability that finally obtains equipment is:

。

The invention has the advantages that: adopt this patent to confirm that the ability of double helix stirring conveying equipment is scientific and reasonable.

Description of drawings

Fig. 1 stirs conveying equipment figure for double helix;

Fig. 2 is the blade angle analysis chart.

The specific embodiment

A kind of method of definite filling slurry mixing plant production capacity

Can know that by Fig. 1 the blade of equipment comprises internal helical blades 1 and external spiral blade 2 two parts, and all is fixed in symmetrically on the shaft 3 by nut; In the opposite direction; Drive their rotation through the rotation of shaft, equipment one end is a charging aperture, and an end is a discharging opening.

Through blade angle being analyzed V ₁Direction is consistent with the agitation tank length direction, and effect is to promote slip to move to agitation tank one end; V ₂Perpendicular to the agitation tank length direction, slip is done the cutting movement of normal direction, slip is mixed fully improve the uniformity quality.

1, confirms blade rotational speed

Blade all is fixed on the shaft; Angular velocity (ω) can be confirmed that then according to the inside and outside blade radius R, the r that record, the rotating speed (V) that draws blade is ω R, ω r by the frequency that drives motor; Can know that by Fig. 2 the linear velocity of blade (V) can be decomposed into two velocity component V ₁, V ₂, V ₁The motion of promotion slip, V ₂Make the stirring of slip more abundant, to the not influence of ability of equipment.

According to trigonometric function relation, V _{Outer 1}=ω R

, V _{Outer 2}=ω R

Because intra vane and outer leafs are all driven by shaft and rotate, so they have unequal angular velocity, and the intra vane diameter that records of basis draws the linear velocity of intra vane, V then _{Interior 1}=ω r

, V _{Interior 2}=ω r

2, confirm inside and outside blade conveying capacity

Can be known that by motion analysis outer leafs promotes slip and moves to discharging opening, intra vane promotes slip and moves to charging aperture, and interior outer leafs makes slip intersect convective motion, reaches abundant mixing.

At (0～r ₁) on the length, being shaft, no flow, flow are 0;

Confirm the intra vane conveying capacity: flow is:

, for negative;

Confirm the outer leafs conveying capacity; Flow is:

, for just.

In the formula: 2---agitation tank is divided into left and right sides two parts;

Q---flow, m3/h;

R---external spiral blade diameter, m;

R---internal helical blades diameter, m;

r ₁---shaft diameter, m;

ω---shaft angular velocity, rad/s;

α---blade angle, °

3, confirm the mixing plant ability

The frequency of measuring motor obtains the interior outer radius of the rotational angular velocity and the blade of blade, promptly calculates through following formula, and the ability that finally obtains equipment is:

Through the check of this formula at mine filling system, its accuracy is higher, has certain directive significance for the mine production practices.

Claims (1)

1. the method for definite filling slurry mixing plant production capacity, its step:

(1), confirms blade rotational speed

Blade all is fixed on the shaft, and angular velocity can be confirmed that according to the inside and outside blade radius R, the r that record, the rotating speed that draws blade is ω R, ω r then by the frequency that drives motor, and the linear velocity of blade can be decomposed into two velocity component V ₁, V ₂

According to trigonometric function relation, V _{Outer 1}=ω R

, V _{Outer 2}=ω R Draw the linear velocity of intra vane then according to the intra vane diameter that records, V _{Interior 1}=ω r

, V _{Interior 2}=ω r

(2), confirm inside and outside blade conveying capacity

Can be known that by motion analysis outer leafs promotes slip and moves to discharging opening, intra vane promotes slip and moves to charging aperture, and interior outer leafs makes slip intersect convective motion, reaches mixing;

At (0～r ₁) on the length, being shaft, no flow, flow are 0;

Confirm the intra vane conveying capacity: flow is:

, for negative;

Confirm the outer leafs conveying capacity; Flow is:

, for just;

In the formula: 2---agitation tank is divided into left and right sides two parts;

Q---flow, m3/h;

R---external spiral blade diameter, m;

R---internal helical blades diameter, m;

r ₁---shaft diameter, m;

ω---shaft angular velocity, rad/s;

α---blade angle,

(3), confirm the mixing plant ability

The frequency of measuring motor obtains the interior outer radius of the rotational angular velocity and the blade of blade, promptly calculates through following formula, and the ability that finally obtains equipment is:

。

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