CN1146926A

CN1146926A - Continuous interference mixer

Info

Publication number: CN1146926A
Application number: CN 95116123
Authority: CN
Inventors: 郝增义; 郝树平; 王刚明
Original assignee: ZANHUANG MACHINERY PLANT HEBEI
Current assignee: ZANHUANG MACHINERY PLANT HEBEI
Priority date: 1995-09-30
Filing date: 1995-09-30
Publication date: 1997-04-09
Anticipated expiration: 2015-09-30
Also published as: CN1045260C

Abstract

A continuously interfered mixer has two main shafts rotating synchronously in same direction. The stirring unit on the main shafts is composed of one or more blade wheels with two or more blades uniformly arranged on rotary surface of blade wheel and perpendicular to the main shaft. The rotation diameter of blades is greater than distance between two shafts, so each pair of blade wheels forms an interference mixing area, in which material is acted by more groups of opposite forces and mixed thoroughly. It features high mixing efficiency and long service life and is espeically suitable for viscose materials.

Description

Continuous interference mixer

The present invention relates to a kind of continuous interference mixer, exactly, relate to the agitator on a kind of mixer parallel main axis, belong to mixing equipment and technologies such as powder, granule materials, liquid, colloid and mortar.

Existing mixer equipment mainly comprises cone-type mixer and the twin shaft or the multiaxis screw mixer that with parallel or substantially parallel main shaft are characteristics, cone-type mixer is an example with Chinese patent (patent No. 93207433.2) disclosed " many cone and screw mixers ", this equipment is discontinuous production, efficient is low, complicated operation, and the dead angle is arranged in the mixed process.The continous way mixer that with the parallel axes is characteristics can overcome above-mentioned deficiency substantially, as Chinese patent (patent No. 88217388.X) disclosed " twin-shaft screw-type continuous mixer ", " horizontal triple helical mixer " (patent No. 93217198.2) and external mixer equipment etc., but described mixer is main shaft and does the synchronous backward rotation, agitator on the main shaft or be helical blade, or be belt, chip face type blade, or be ribbon, cause mixing efficiency low, blade wear is big, easily make material grind, press feedback, and to the bad adaptability of material of sticky shape.

The objective of the invention is to the main shaft of mixer and the agitator on the main shaft are improved,, increase the service life, and can be applicable to material of sticky shape especially to improve mixing efficiency and mixed-precision.

The objective of the invention is to realize with following technical scheme: each main shaft is rotation in the same way synchronously;

Agitator on the main shaft is made up of the one or more impeller that is assemblied on the main shaft, and the quantity of impeller can be determined according to designing requirement, and assembled in sequence is on the mixing shaft part of main shaft;

Described impeller is same structure, each impeller has the blade more than two or two, the quantity of blade can be determined according to the character of mixed material, general conventional design is the 2--5 sheet, blade must be uniform on the surfaces of revolution of impeller, could realize the rotation in the same way synchronously with main shaft, and it is vertical with main shaft or vertical substantially;

The physical dimension of blade should meet following formula: h-1b＞1a＞h/2, and h is a wheelbase, and 1a is a blade major diameter length, and 1b is a blade minor axis length, mainly is to determine that the tactical diameter of blade is greater than the diaxon wheelbase;

Impeller on impeller on each main shaft and the adjacent main shaft correspondence position forms interferes the mixed zone, be that impeller is with main shaft rotation in the same way synchronously, and the tactical diameter of its blade is greater than the diaxon wheelbase, every pair of impeller surfaces of revolution overlapping areas is interferes the mixed zone, material is interfering the mixed zone to be subjected to the acting in conjunction of many group opposing forces, material is moved along the curvilinear path of complexity, repeatedly interference through many interference mixed zones that impeller is formed, material is fully mixed, this to stir, interference is main mixing, not only prolonged service life of equipment, material of sticky shape is mixed fully.

The following formula of best major diameter size conforms of blade: 1a=h/2cos α-Δ L, α is the blade critical angle, be that every pair of impeller rotates to two blade major diameter gaps hour, the major diameter line a of blade and the angle of coordinate y, α is a constant, can pass through α=90 °/n and convert, wherein, the blade sheet number that n has for each impeller.Δ L is the impeller clearance of every pair of impeller when rotating to critical angle, and Δ L can be designed as zero in theory, but considers actual manufacturing, alignment error, can cause blade to collide or stuck, should design the span of Δ 1.For material particular diameter less than 1 millimeter colloidal solution mix with fine powder material, powder mixes with powder, powder mixes with liquid etc., Δ L is the 1--4 millimeter; For material particular diameter more than or equal to 1 millimeter particulate material mix with particulate material, particulate material is mixed with liquid etc., Δ L be the mixed material particle diameter 2--5 doubly, the particle diameter of being quoted from is meant the particle diameter of larger particles in the mixed material.Above-mentioned value is to guarantee mixing efficiency, precision, prevents impeller collision or stuck optimal values scope again.After blade major diameter size was determined, minor axis selection of dimension one appropriate value got final product.

Major diameter line a, a ' that the position relation between every pair of impeller on the main shaft of being assemblied in should satisfy two relative blades equals 2 times of critical angle α with the angle sum of coordinate y, limiting for how much of this assembly relation mainly is to make every pair of impeller can rotate to critical condition, keep impeller normally to rotate, avoid occurring collision or stuck.Because satisfying above-mentioned condition gets final product, can when the assembling impeller, make the angle of blade major diameter line and coordinate y unequal, or in the coordinate quadrant, evenly distribute, from main shaft axially, the uniform main axis rotation face of blade.

The design of blade mainly is the design of shape and sheet number under the situation that physical dimension is determined, the thickness of blade only is to guarantee blade strength.For different material, blade shape and sheet number are different.Imitative capitate blade is suitable for the mixing of powder, particle, low humidity solid material and powder, granular solid material and low viscosity liquid material; Triangular vane, its contoured surface are suitable for the mixing of powder, granular solid material and low viscosity liquid material for facing directly, and its contoured surface is inner arc surface or exterior arc surface, are suitable for powder, granule materials and neutral viscosity, concentration mixing of materials; Polygonal blade more than four or four, its contoured surface is suitable for the mixing of powder, fine granular materials and high concentration, high-viscosity material for facing directly or inner arc surface or exterior arc surface.Certainly, polygonal blade sheet number can not be too much, when blade approaches circle, can't realize interference condition.

It is 0 ° face type blade that above-mentioned blade is twist angle, said twist angle is meant the distortion angle of blade along its axis, in fact, the blade twist angle can be 0 °--45 °, under the prerequisite that guarantees mixing efficiency and mixed-precision, twist angle is big more, and incorporation time is also just short more, helps improving output.

The present invention has overcome the deficiency of prior art, can reach comparatively desirable result of use.Through on probation, for the mixer of installation power 12.3kw, its production capacity 2--4m ³/ h, mixing efficiency be common mixer 2--6 doubly, mixed-precision is more than or equal to 98%, also can be applicable to mixing of material of sticky shape such as liquid rubber and additive, cream class and cream class, cream class and powder especially.

Fig. 1 is a structure cutaway view of the present invention.

Fig. 2 is the axial schematic diagram of impeller.

Fig. 3 is the axial coordinate schematic diagram of impeller.

Fig. 4 is the impeller shape schematic diagram.

Fig. 5 is the impeller shape schematic diagram.

Fig. 6 is the impeller shape schematic diagram.

Fig. 7 is the impeller shape schematic diagram.

Fig. 8 is the impeller shape schematic diagram.

Fig. 9 is the impeller shape schematic diagram.

Figure 10 is the impeller shape schematic diagram.

Figure 11 is the impeller shape schematic diagram.

Figure 12 is the impeller shape schematic diagram.

Figure 13 is the impeller shape schematic diagram.

Figure 14 is the impeller shape schematic diagram.

The invention will be further described below in conjunction with drawings and Examples.

The embodiment of the invention is mainly by motor 1, frame 2, guard shield 3, gear-box 4, feed auger 5, impeller 6, main shaft 7, shell 8, discharging impeller 9, end cap 10, main shaft 11, impeller 12 is formed, main shaft 7,11 by motor 1 driving rotation in the same way synchronously, on the mixing shaft part of diaxon respectively assembled in sequence 21 impellers 6 are arranged, 12, each blade wheel structure is identical, has Fig. 4, imitative capitate blade shown in Figure 5, difference according to material properties, also can be designed as contoured surface and be and face directly or inner arc surface becomes or the triangular vane of exterior arc surface, the quadrangle blade, the pentagon blade, the twist angle that is shown in the figure is 0 ° a blade, and can also design twist angle is 0 °--45 ° blade.Above-mentioned blade is all uniform on the surfaces of revolution of impeller, and vertical with main shaft, and in addition, the physical dimension of blade meets h-1b＞1a＞h/2 formula.

The length of above-mentioned blade designs as follows through size: 1a=h/2cos α-Δ L, α=90 °/n, Δ L span be 1--4 millimeter or mixed material particle diameter 2--5 doubly, as long as the minor axis size of blade can satisfy the intensity of its center pilot hole.

Impeller 6 on the main shaft 7 is interfered mixed zone (dash area as shown in Figure 2) with impeller 12 formation on main shaft 11 correspondence positions, and 21 pairs of impellers on two main shafts all form same interference mixed zone.Vertical or the critical two states of two blades assembles position relation on two main shafts between the every pair of impeller at interval by two blades, and major diameter line α, the α ' that this assembling meets two relative blades and the angle sum of coordinate y equal the condition of 2 times of critical angle α.

Above-mentioned is the twin shaft continuous interference mixer, and according to the present invention's technical scheme, directly class is released the equivalence design of the above continuous interference mixer of diaxon.

Claims

1, a kind of continuous interference mixer, it comprises main shaft that two or more are parallel or substantially parallel and the agitator on each main shaft, it is characterized in that:

A, each main shaft be rotation in the same way synchronously,

B, described agitator are made up of the one or more impeller that is assemblied on the main shaft,

C, described impeller have the blade more than two or two, and blade is uniform on the surfaces of revolution of impeller, and vertical with main shaft,

The physical dimension of d, blade should meet following formula: h-1b＞1a＞h/2, and h is a wheelbase, and 1a is a blade major diameter length, and 1b is a blade minor axis length,

Impeller on impeller on e, each main shaft and the adjacent main shaft correspondence position forms interferes the mixed zone.

2, mixer according to claim 1, it is characterized in that the following formula of major diameter size conforms of blade: 1a=h/2cos α-Δ 1, α are the blade critical angle, the impeller clearance when Δ 1 rotates to critical angle for every pair of impeller.

3, mixer according to claim 2 is characterized in that impeller clearance Δ 1 is the 1--4 millimeter.

4, mixer according to claim 2 is characterized in that impeller clearance Δ 1 2--5 times for the mixed material particle diameter.

5, mixer according to claim 1, the angle sum that it is characterized in that being assemblied in major diameter line a, a ' that position relation between every pair of impeller on the main shaft should satisfy two relative blades and coordinate y equals 2 times of critical angle α.

6, mixer according to claim 1 is characterized in that having on the impeller imitative capitate blade.

7, mixer according to claim 1 is characterized in that having triangular vane on the impeller.

8, mixer according to claim 1 is characterized in that having on the impeller polygonal blade more than four or four.

9, according to claim 7 or 8 described mixers, the contoured surface that it is characterized in that blade is for facing directly or inner arc surface or exterior arc surface.

10,, it is characterized in that the blade twist angle is 0 ° according to claim 1 or 6 or 7 or 8 described mixers--45 °.