CN2215343Y

CN2215343Y - Horizontal powder material mixer

Info

Publication number: CN2215343Y
Application number: CN 93210448
Authority: CN
Inventors: 俞峰; 唐永龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-17
Filing date: 1993-04-17
Publication date: 1995-12-20
Anticipated expiration: 2003-04-17

Abstract

The utility model provides a horizontal powder material mixer, which is provided with a material cylinder, a feed inlet on the material cylinder, a discharge port with a flashboard, rotating shafts arranged along the centre of the material cylinder in the axial direction, and stirring paddles composed of a paddle handle and an upper and a lower paddle blades and arranged on the rotating shaft along the radial direction, wherein, the upper and the lower paddle blades are arranged to form an angle, the paddle blades relative to the rotating shafts are arranged to form the angle, and one end of each rotating shaft is connected with a power source through a transmission mechanism. The horizontal powder material mixer of the utility model can shorten the mixing time of powder materials, and enhance the mixing uniformity of the powder materials.

Description

Horizontal powder material mixer

The utility model relates to mixing apparatus, particularly a kind of mixer that is suitable for multiple powder mixing.

Industries such as chemical industry, agricultural chemicals, feed, food, medicine, dyestuff usually need powder and powder are carried out hybrid process.Hybrid process between this solid powder requires mixed powder that certain uniformity is arranged.And the uniformity of mixed powder depends primarily on the structure of agitating device in the mixer except time factor.At present, the horizontal double helical ribbon mixer that domestic and international feedstuff industry generally adopts, the main feature of its agitating device is to be fixed with two in the rotating shaft appearance to vary in size, two ribbon (see figure 1)s that the hand of spiral is opposite, horizontal double helical ribbon mixer is generally the single shaft single chamber, and the rotating speed of rotating shaft is slow (36-50 rev/min), and hybrid mode mainly is the convection current and the shearing of powder, the speed of powder upset turnover is slow, does not produce the rapid diffusion under the state of weightlessness.The time of its best admixture needs 3-5 minute, and its coefficient of variation CV that weighs the uniformity is about 5% (the mixture homogeneity coefficient of variation computational methods according to GB5918-86 obtain).Therefore longer with the required time of horizontal double helical ribbon mixer mixed powder, the coefficient of variation of mixing the back powder is big, the uniformity is relatively poor.

The purpose of this utility model is that a kind of improved horizontal powder mixer will be provided, and can shorten the incorporation time of powder and improve the uniformity that powder mixes.

Task of the present utility model is finished as follows: a kind of horizontal powder mixer, has fixed barrel, the discharging opening of charging aperture on the described barrel and strap brake plate, along the axial arranged rotating shaft in described barrel center, described rotating shaft is stretched out the outer end of barrel and is connected with power source by transmission mechanism, its characteristics are radially to be fixed with paddle in the interior rotating shaft of described barrel, paddle is made up of loom and two blades that are fixed on the described loom, two blades that are positioned on the paddle of described barrel rotating shaft two ends are arranged in parallel up and down, blade phase countershaft makes the angle and arranges, two blades that are positioned on the paddle of described rotating shaft middle part become the angle to arrange up and down, and described two blade phase countershafts make the angle and arrange.

The paddle at the utility model mixer rotating shaft middle part can be along rotating shaft to even layout.

The space angle of cut when blade phase countershaft on the paddle of the utility model mixer rotating shaft two ends makes the angle layout can be 15 °-30 °.

Space angle of cut when the following blade phase countershaft of the utility model mixer rotating shaft middle part paddle makes the angle layout can be 30 °-60 °, and the space angle of cut when the last blade of described paddle descends blade to make the angle layout relatively can be 30 °-90 °.

The horizontal powder mixer of the utility model is owing to adopt into two blade paddles that the angle is arranged, therefore the paddle that is rotated in barrel of powder overturns fast and is in the moment state of weightlessness in (120 rev/mins) process, most of powders all are arranged in the moving space of changeing of two blades, therefore to powder convection current, shearing, diffusion is all carried out at a high speed at short notice, thereby makes powder reach even mixing rapidly.

Make tracer with the CuO powder (particle is less than 300 orders) that oven dry is pulverized, with particle less than 200 purpose CaCO ₃Powder is made diluent, both weight ratios are 1:1000, with mixer of the present utility model above-mentioned two kinds of powders are done the mixed-precision test, in the barrel of mixer, select eight positions to make sample point equably, its incorporation time, the CuO content of each sample point, the value of the coefficient of variation CV that obtains according to the GB5918086 computational methods sees the following form:

Incorporation time (second)	CuO content (‰)								Coefficient of variation CV (%)
										A	B	C	D	E	F	G	H
	15 30 60 120	1.12 1.13 1.12 1.13	1.11 1.11 1.15 1.12	1.08 1.10 1.17 1.14	1.15 1.14 1.13 1.19	1.18 1.19 1.16 1.15	1.23 1.16 1.10 1.17	1.21 1.17 1.17 1.16										1.16 1.14 1.15 1.16	4.40 2.63 2.18 1.95

As seen from the above table, after mixer turned round 1-2 minute, the mixture homogeneity of powder---coefficient of variation CV can reach about 2%, the powder mixed-precision 5% of the horizontal double helical ribbon mixer of ratio of precision that shows its mixed powder of mixer of the present utility model is much higher, and incorporation time also shortened to 1-2 minute from 3-5 minute and has good economic benefits and social benefit.

Below with reference to the embodiment accompanying drawing the utility model is described in further detail.

Fig. 1 is the organigram of agitating device in the horizontal double helical ribbon mixer.

Fig. 2 is that organigram cuts open in the office of the utility model mixer.

Fig. 3 is the organigram when blade is arranged in parallel about the paddle.

Fig. 4 is the organigram when blade becomes the angle to arrange about the paddle.

Fig. 5 is the front view of paddle one of distribution scheme in rotating shaft.

Fig. 6 is the left view of scheme shown in Figure 5.

Fig. 7 is two a front view of paddle distribution scheme in rotating shaft.

Fig. 8 is the left view of scheme shown in Figure 7.

Consult Fig. 2, the horizontal powder mixer of the utility model has the discharging opening 3 of fixed barrel 1, charging aperture 2, strap brake plate, an end that stretches out outside the barrel 1 along the axial arranged rotating shaft 4 in barrel 1 center, the paddle 5 of rotating shaft 4 upper edge radial arrangement, rotating shaft 4 is connected with power source by transmission mechanism.Fixed barrel 1 adopts drum type brake cylindrical shell, barrel 1 two ends to have support to fix by built-in fitting or expansion bolt and ground.On the charging aperture 2 transparent cover plate can be set, to prevent dust from flying, also can directly observe powder mixing situation.Discharging opening 3 is provided with movable flashboard, closes upper flashboard before the mixer work earlier, and then pours powder into, can prevent that like this powder from spilling from discharging opening, and mixing is opened flashboard and can be drawn off the powder that mixes when finishing.The two ends of rotating shaft 4 are by the bearing supporting at barrel two ends, and the end that barrel 1 is stretched out in rotating shaft 4 links to each other with motor 9 by sprocket wheel 6, chain 7, cylinder reductor 8.Consult Fig. 2, Fig. 3, the two ends that are positioned at barrel 1 rotating shaft 4 radially respectively are furnished with the paddle of a pair of symmetry, paddle is made up of loom 10, following blade 11 and last blade 12, blade 11,12 is arranged in parallel, 4 one-tenth angles of blade 11 phase countershafts are arranged, its space angle of cut is generally 15 °-30 °, is preferably 20 °, and blade 11 and 12 can be pushed the powder at barrel two ends to the middle part of barrel during the rotating shaft running, and can quicken the convection current and the diffusion of powder.Consult Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, the uniform paddle that is fixed with in rotating shaft 4 middle parts in the barrel 1, stir and tremble oar also by loom 10, down blade 11 and last blade 12 are formed, but blade becomes the angle to arrange up and down, its space angle of cut is generally 30 °-90 °, is preferably 90 °, and 4 one-tenth angles of following blade 11 and rotating shaft are arranged, its space angle of cut is generally 30 °-60 °, is preferably 45 °.Paddle is radially paired symmetric arrangement in rotating shaft, and the space angle of cut of adjacent two pairs of paddles is 90 °.Paddle also can radially be arranged one group in rotating shaft, every group has three paddles, and the angle between the two adjacent paddles is 120 ° on the same group.

When mixer of the present utility model uses, shut the flashboard on the discharging opening earlier, pour the powder that needs mixing then by weight ratio into, cover transparent cover plate, starting power set, mixer rotating shaft rotation, with the paddle that rotating shaft is rotated at a high speed can shear powder, convection current, diffusion, powder in the upset is in state of weightlessness, and immixture is very violent, so powder can reach even mixing in 1-2 minute time.Open the flashboard on the discharging opening, the powder that has mixed can be discharged outside the mixer barrel rapidly under the drive of the paddle that remains in operation, and shuts down then, shuts the flashboard of discharging opening, opens the cover plate of charging aperture and finishes the preceding preparation of mixing for the second time.

Claims

1, a kind of horizontal powder mixer, has fixed barrel (1), charging aperture on the described barrel (2), discharging opening (3) with the strap brake plate, along the axial arranged rotating shaft (4) in barrel (1) center, described rotating shaft is stretched out the outer end of barrel (1) and is connected with power source by transmission mechanism, it is characterized in that radially being fixed with paddle (5) in the rotating shaft (4) in the barrel (1), described paddle is by loom (10), form with the blade (11) and the blade (12) that are fixed on the described loom, two blades that are positioned on the paddle at barrel (1) rotating shaft (4) two ends are arranged in parallel up and down, blade phase countershaft (4) makes the angle and arranges, two blades that are positioned on the paddle of rotating shaft (4) middle part become the angle to arrange up and down, and described two blade phase countershafts (4) make the angle and arrange.

2, horizontal powder mixer according to claim 1 is characterized in that the paddle at mixer rotating shaft (4) middle part is axially evenly arranged along rotating shaft (4).

3, horizontal powder mixer according to claim 1 and 2 is characterized in that it is 15 °-30 ° that blade phase countershaft (4) on the paddle of rotating shaft (4) two ends makes the space angle of cut of angle when arranging.

4, horizontal powder mixer according to claim 3, it is characterized in that it is 30 °-60 ° that following blade phase countershaft (4) on the paddle of rotating shaft (4) middle part makes the space angle of cut of angle when arranging, the space angle of cut when the last blade of described paddle descends blade to make the angle layout relatively is 30 °-90 °.