CN2652632Y

CN2652632Y - Stirring device

Info

Publication number: CN2652632Y
Application number: CN 200320109814
Authority: CN
Inventors: 冯忠绪; 赵利军; 姚运仕
Original assignee: 冯忠绪
Priority date: 2003-11-21
Filing date: 2003-11-21
Publication date: 2004-11-03
Anticipated expiration: 2013-11-21

Abstract

The utility model relates to a dasher in construction, in particular to a forced concrete mixer, which is characterized in that the dasher is formed from the fixed connection between a large mixing arm linked with a large mixing blade, a small mixing arm linked with a small mixing blade with the mixer shaft. The large and small mixing blades both have fixed radial and axial angles. The large and small mixing arms are coaxial and in fixed connection on both sides of the mixer shaft. The included angle between the large mixing blade face and the large mixing arm axes is the fixed radial angle of the large mixing blade, which is chosen from 30 degree to 60 degree. With the dasher, the inefficient mixing zone inside the mixing drum of the mixer can be eliminated, so that the relatively full mixing can be obtained for the materials inside the entire space of the mixing drum.

Description

A kind of agitating device

Affiliated technical field

The utility model relates to a kind of agitating device for building, particularly a kind of mixer that is applicable to forced concrete.

Background technology

In this known class mixer, one group of big stirring vane near the mixing drum inwall is only arranged, be fixedly connected on the shaft according to certain rules.Along with the continuous expansion of project scale, the increase day by day of concrete demand, mixer develops to big capacity and high production rate direction.For these jumbo mixers, the radius size of mixing drum is more a lot of greatly than the height of stirring vane, so during mixer work, stirring vane can only stir one deck material near the mixing drum inwall, the bed of material is high in blades height, and the material that is in the very big segment distance between stirring vane and the shaft can't well be stirred.Simultaneously, because speed and mixing drum radius that material is forced to stir are proportional, therefore exist velocity gradient along the mixing drum radial direction, promptly successively decrease from the mixing drum inwall to shaft along mixing drum radial direction mixing speed, near the place of shaft, mixing speed is just low more, also with regard to easy more mixing inefficient zone even the dead band of occurring.The capacity of mixer is big more, and this problem is just outstanding more, and the concrete quality that stirs out is also just poor more.

Summary of the invention

In order to overcome the deficiency of existing forced mixer, the purpose of this utility model provides a kind of agitating device, and it can eliminate the mixing inefficient zone in the mixer mixing drum, guarantees that the material in the whole mixing drum space can both obtain stirring more fully.

The technical solution of the utility model is: design a kind of agitating device, it is characterized in that: agitating device is fixedlyed connected with shaft by the big mixing arm that is connected with big stirring vane, the little mixing arm that is connected with little stirring vane and is constituted, large and small stirring vane all has radial and axial fixed angle, and large and small mixing arm coaxial line is fixedly connected on the shaft both sides.

The unilateral angle with big mixing arm axis of described big paddle is the radially fixed angles of big stirring vane, and it is chosen in 30 °～60 °.

The angle of the vertical line of described big mixing arm axis and shaft axis is the axial restraint angle of big stirring vane, gets 30 °～60 °.

The angle of the unilateral and little mixing arm axis of described little paddle is the radially fixed angles of little stirring vane, and it is chosen in 30 °～60 °; The angle of the vertical line of little mixing arm axis and shaft axis is the axial restraint angle of little stirring vane, is chosen in 30 °～60 °.

Described big stirring vane from the distance of shaft greater than the distance of little stirring vane from shaft.

The unilateral normal direction of the unilateral normal direction of described big paddle and little paddle is opposite.

Characteristics of the present utility model are: agitating device increases little stirring vane, and large and small stirring vane relative fixed is connected the shaft both sides, and large and small stirring vane all has radial and axial fixed angle, and the unilateral normal direction of large and small paddle is opposite.When shaft rotates by a certain fixedly rotation direction, greatly, little stirring vane can resolve into separately peripheral force to the thrust of material, axial force and radial load, greatly, the peripheral force effect of little stirring vane will promote material respectively and move in a circle, greatly, the responsive to axial force of little stirring vane will promote material and do relative axially-movable, greatly, the radial load effect of little stirring vane will promote material and do relative radial motion, thereby make material form strong convective motion, guarantee that the material in the whole mixing drum space has all obtained fully mixing and stirring near the material of mixing an inwall and close shaft.The agitating device of this particular design has increased the radially convective motion of material, has not only effectively eliminated mixing inefficient zone, has improved mixing quality, but also has alleviated the wearing and tearing of mixing drum liner plate and stirring vane.Evidence, constant when match ratio, concrete strength generally will strengthen about 5%, and the mixer capacity is big more, and the effect of this enhancing is remarkable more.

In addition, in order to reduce cost, apply, the radially fixed angle of the large and small stirring vane of the utility model agitating device can be taken as zero.Can adopt the agitating device of original forced mixer like this, a relative side that only needs original stirring vane is installed at shaft increases a little stirring vane, and the unilateral normal direction of little paddle is with the unilateral normal direction of paddle is opposite greatly accordingly.Though weakened the radially convective motion of material, compared with prior art, still can eliminate mixing inefficient zone preferably, improve the concrete quality of mixing and stirring, and the part increase is few, cost is low.

Description of drawings

Following accompanying drawing has been described the embodiment of the utility model agitating device.

Fig. 1 is embodiment 1 structural representation.

Fig. 2 is embodiment 1 structural front view.

Fig. 3 is embodiment 1 a structure side view.

Fig. 4 is embodiment 2 twin-shaft mixer structural representations.

Among the figure: 1, big stirring vane; 2, big mixing arm; 3, shaft; 4, little stirring vane; 5, little mixing arm; 6, mixing drum; 7, side stirring vane; 8, side mixing arm; 9, motor; 10, sychronisation; 11, axle head bracing or strutting arrangement.

The specific embodiment

Embodiment 1 is as shown in Figure 1: agitating device is by big stirring vane 1, big mixing arm 2, and shaft 3, little stirring vane 4 and little mixing arm 5 are formed.Big mixing arm 1 is fixedly connected on shaft 3 both sides with little mixing arm 2 coaxial lines.Big stirring vane 1 is fixedly connected on the

big mixing arm

2,1 angle with big mixing arm 2 axis of big stirring vane is the radially fixed angles of big stirring vane 1, get 30 °～60 °, the vertical line of big mixing arm 2 axis and the angle of shaft 3 axis are the axial restraint angle of big stirring vane 1 in 1 of the big stirring vane, get 30 °～60 °.Little stirring vane 4 is fixedly connected on the

little mixing arm

5,4 angles with little mixing arm 5 axis of little stirring vane are radially fixed angles of little stirring vane 4, get 30 °～60 °, the vertical line of little mixing arm 5 axis and the angle of shaft 3 axis are the axial restraint angle of little stirring vane 4 in 4 of the little stirring vanes, get 30 °～60 °.

As shown in Figures 2 and 3: the normal that big stirring vane is 1 is opposite with the normal direction of 4 of little stirring vanes.When shaft 3 when the ω direction is rotated, big stirring vane 1 will promote material X vertically ₁Direction, radially Y ₁Direction and circumferential Z ₁The direction motion, little stirring vane 4 will promote material X vertically ₂Direction, radially Y ₂Direction and circumferential Z ₂The direction motion, thus make material form strong convective motion near the material of mixing an inwall and close shaft, effectively eliminated mixing inefficient zone, improved concrete mixing quality.

Embodiment 2 is as shown in Figure 4: twin-shaft mixer is made up of mixing drum 6, motor 9, sychronisation 10, axle head bracing or strutting arrangement 11 and agitating device, wherein agitating device is by big stirring vane 1, big mixing arm 2, shaft 3, little stirring vane 4, little mixing arm 5, side stirring vane 7 and side mixing arm 8 are formed.The shaft 3 that is arranged in parallel is fixedly connected on the mixing drum 6 by axle head bracing or strutting arrangement 11, and shaft 3 is in transmission connection with motor 9, has sychronisation 10 to be in transmission connection between the shaft 3.Side mixing arm 8 and big mixing arm 2 are fixedly connected on the shaft 3 by the helical arrangement form, and side mixing arm 8 is fixedly connected on the two ends of shaft 3 near mixing drum 5 ends, and big mixing arm 1 and little mixing arm 2 coaxial lines are fixedly connected on the both sides of shaft 3.Side stirring vane 7 is with 45 ° of axial restraint angles, 0 ° radially fixed angles be fixedly connected on the side mixing arm 8; Big stirring vane 1 is with 45 ° of axial restraint angles, 45 ° radially fixed angles be fixedly connected on the big mixing arm 2; Little stirring vane 4 is with 45 ° of axial restraint angles, 45 ° radially fixed angles be fixedly connected on the little mixing arm 5.The normal direction that side stirring vane on every shaft is 7 is along the projection of shaft axis mixing drum 6 end faces dorsad, the normal direction that big stirring vane on two shafts is 1 is along the both direction of the projection directed in opposite of its shaft axis, and the normal direction that the little stirring vane on every shaft is 1 is opposite with the normal direction of 4 of big stirring vanes.During mixer work, driven by motor shaft 3 rotates in opposite directions, and material circulates in mixing drum 6 along the E direction under the promotion of side stirring vane 7 and big stirring vane 1.On every shaft, under the promotion of big stirring vane 1 and little stirring vane 4,, effectively eliminated mixing inefficient zone simultaneously, improved mixing quality near the material of mixing drum inwall and the strong convective motion of material of close shaft.

Claims

1, a kind of agitating device, it is characterized in that: agitating device is fixedlyed connected with shaft by the big mixing arm that is connected with big stirring vane, the little mixing arm that is connected with little stirring vane and is constituted, large and small stirring vane all has radial and axial fixed angle, and large and small mixing arm coaxial line is fixedly connected on the shaft both sides.

2, a kind of agitating device according to claim 1 is characterized in that: the unilateral angle with big mixing arm axis of big paddle is the radially fixed angles of big stirring vane, and it is chosen in 30 °～60 °.

3, a kind of agitating device according to claim 1 is characterized in that: the vertical line of big mixing arm axis and the angle of shaft axis are the axial restraint angles of big stirring vane, are chosen in 30 °～60 °.

4, a kind of agitating device according to claim 1 is characterized in that: the angle of the unilateral and little mixing arm axis of little paddle is the radially fixed angles of little stirring vane, and it is chosen in 30 °～60 °; The angle of the vertical line of little mixing arm axis and shaft axis is the axial restraint angle of little stirring vane, is chosen in 30 °～60 °.

5, a kind of agitating device according to claim 1 is characterized in that: described big stirring vane from the distance of shaft greater than the distance of little stirring vane from shaft.

6, a kind of agitating device according to claim 1 is characterized in that: the unilateral normal direction of the unilateral normal direction of described big paddle and little paddle is opposite.