CN211487382U - Double-helix conical mixer - Google Patents

Abstract

The utility model relates to a machinery, especially a double helix conical mixer for material mixing. Including feeder hopper, cone compounding case, shaftless reducing displacement helical agitator, its main characteristic is: the feed hopper is arranged at the top of the cone mixing box, and the shaftless variable-diameter variable-pitch spiral stirrer is symmetrically and obliquely arranged inside the cone mixing box along the central line of the cone mixing box respectively. The beneficial effects are that: compared with the traditional cone mixing box with the same volume, the cone mixing box can load more capacity materials, simultaneously, the power consumption and the production cost are reduced, the cone mixing box is convenient and practical, the problems of extrusion, grinding, material segregation, difficult discharging and the like of particle materials in the prior art are solved, and the cone mixing box is suitable for being widely popularized.

Description

A double helix cone mixer

technical field

The utility model relates to a machine for material mixing, in particular to a double-spiral conical mixer.

Background technique

Double helical conical mixers are widely used in solid-solid (ie solid-solid (ie. Powder and powder) powder-liquid mixing.

At present, the common double-helix conical mixer is a double-helix conical mixer that makes the powder move in a circular motion along the cone wall by the revolution of the double helix, and the rotation of the helical blade makes the powder discharge to the center of the cone for radial motion. It is not suitable for mixing with large fiber content and large differences in material density and particle size during the mixing process. The reason is that the phenomenon of chip separation and segregation occurs during the mixing process, and the discharge port is easily blocked, resulting in the extrusion and grinding of granular materials. Moreover, the center of the existing helical blade is a solid shaft, which increases the load of the equipment itself and increases the driving power of the motor. At the same time, it also occupies the mixing space of materials, which cannot be solved even if a higher-power motor drive is used.

Therefore, the inventor has developed a double-helix conical mixer for mixing large-density and large-sized materials through practical exploration, which completely solves the problems of extrusion and grinding of granular materials, material segregation, and difficulty in discharging.

SUMMARY OF THE INVENTION

The purpose of this utility model is to solve the above-mentioned deficiencies in the prior art, and provide a double-helix conical mixer, which is a double-helix conical mixer that adopts shaftless variable-diameter and variable-pitch helical blades to realize the mixing of large-density and large-granularity materials. Spiral cone mixer.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is: a double-spiral conical mixer, comprising a feeding hopper, a conical mixing box, and a shaftless variable-diameter and variable-pitch screw agitator, which is characterized in that: The hopper is installed on the top of the cone mixing box, and the shaftless variable diameter and variable pitch screw agitators are respectively installed inside the cone mixing box symmetrically and obliquely along the center line of the cone mixing box.

Further, the bottom of the cone mixing box is provided with a discharge port.

Further, the center line of the shaftless variable diameter and variable pitch screw agitator forms an angle α with the center line of the conical mixing box.

Further, the shaftless variable diameter and variable pitch screw agitator is sequentially installed with an explosion-proof two-speed motor, a reducer, and a non-variable diameter and variable pitch screw stirring blade from left to right.

Further, the large diameter value of the shaftless variable diameter and variable pitch screw stirring blade of the shaftless screw agitator is D1, and the small diameter value of the shaftless variable diameter variable pitch screw stirring blade is D2.

Further, the shaftless variable diameter variable pitch screw stirring blades of the shaftless variable diameter variable pitch screw agitator have three pitches, namely P1, P2, and P3.

Further, the value of the α angle is in the range of 5°-20°.

Further, the value of the large diameter D1 of the shaftless variable diameter and variable pitch screw stirring blade of the shaftless variable diameter variable pitch screw agitator is in the range of 100mm-200mm, and the shaftless variable diameter variable pitch screw stirring blade The value of the minor diameter D2 is in the range of 70mm-140mm.

Further, the values of the three pitches P1, P2, and P3 of the shaftless variable diameter variable pitch screw stirring blade of the shaftless variable diameter variable pitch screw agitator are respectively in the range of 80mm-100mm and 60mm-80mm. , 40mm-60mm range.

The beneficial effects of the utility model are: it can be applied to the mixing process with large fiber content and large difference in material density and particle size, the stirring blades do not occupy too much stirring space, and the granular materials are avoided in the mixing process. It has the advantages of simple structure, low manufacturing cost and energy saving.

Description of drawings

The present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural diagram of a double-spiral conical mixer of the present invention.

Figure 2 is a schematic structural diagram of a shaftless variable diameter variable pitch screw agitator in the present invention.

Detailed ways

It can be seen from Figures 1-2 that the utility model is a double-spiral conical mixer, comprising a feeding hopper 1, a conical mixing box 2, a shaftless variable diameter and variable pitch screw agitator 3, and the feeding hopper 1 is installed on the cone. On the top of the body mixing box 2 , the shaftless variable diameter and variable pitch screw agitators 3 are respectively installed inside the cone body mixing box 2 symmetrically and obliquely along the center line of the cone body mixing box 2 .

Further, the bottom of the cone mixing box 2 is provided with a discharge port 2-1.

Further, the center line of the shaftless variable diameter and variable pitch screw agitator 3 forms an angle α with the center line of the cone-shaped mixing box 2 .

Further, the shaftless variable diameter variable pitch screw agitator 3 is sequentially installed with an explosion-proof two-speed motor 3-1, a reducer 3-2, and a non-variable diameter variable pitch screw stirring blade 3-3 from left to right.

Further, the large diameter value of the shaftless variable diameter and variable pitch screw stirring blade 3-3 is D1, and the small diameter value of the shaftless variable diameter variable pitch screw stirring blade 3-3 is D2.

Further, the shaftless variable diameter and variable pitch helical stirring blades 3-3 have three pitches, namely P1, P2, and P3.

Further, the value of the α angle is in the range of 5°-20°.

Further, the value of the large diameter D1 of the shaftless variable diameter and variable pitch spiral stirring blade 3-3 is in the range of 100mm-200mm, and the small diameter D2 of the described shaftless variable diameter variable pitch screw stirring blade 3-3. The value of is in the range of 70mm-140mm.

Further, the values of the three pitches P1, P2, and P3 of the shaftless variable diameter and variable pitch spiral stirring blades 3-3 are respectively in the range of 80mm-100mm, 60mm-80mm, and 40mm-60mm. .

The working process of the double-spiral conical mixer of the utility model is as follows:

By turning on the explosion-proof two-speed motor 3-1 of the shaftless variable-diameter and variable-pitch screw mixer 3, the explosion-proof two-speed motor 3-1 drives the reducer 3-2, so that the reducer 3-2 drives the shaftless variable-diameter and variable-pitch screw stirring. Blades 3-3 stir and mix the materials falling into the cone mixing box 2 from the hopper 1. When mixing materials with large fiber content and large differences in material density and particle size, the materials will be mixed along the cone mixing box. The center line of 2 is symmetrically inclined and installed in the cone mixing box 2. One of the explosion-proof two-speed motors 3-1 of the shaftless variable diameter and variable pitch screw agitator 3 opens the low-speed gear and rotates clockwise, and the other shaftless The explosion-proof double-speed motor 3-1 of the variable-diameter and variable-pitch screw mixer 3 opens the high-speed gear and rotates counterclockwise. When the fiber content is large, the materials with large differences in material density and particle size fall from the feeding hopper 1 into the cone. When the mixing box 2 is formed, the screw agitator 3 rotating at a low speed clockwise pushes the materials with larger fiber content and material density and particle size difference to the bottom of the mixing box 2, and the screw agitator rotating at a high speed counterclockwise pushes the material below the cone mixing box 2. 3. Push the materials with large fiber content and large differences in material density and particle size to the top of the cone mixing box 2, so that the materials with large fiber content and large differences in material density and particle size can be forced to be stirred, and the diameter can be changed without shaft. The value of the pitch P1 of the variable-pitch spiral stirring blades 3-3 is the largest. During the material stirring process, the spiral agitator 3 that rotates counterclockwise at high speed pushes up the materials with high density and large particles. The material temporarily resides in the pitch P1 section of the shaftless variable diameter and variable pitch screw stirring blade 3-3, waiting for the reverse time difference when another screw agitator 3 rotating clockwise at a low speed pushes down the material in the hopper 1 Mixing, the materials mixed by the reverse jet lag will be pushed down along the clockwise low-speed rotating screw mixer 3 to the pitch P2 section of the shaftless variable diameter and variable pitch screw stirring blades 3-3, and then reverse jet lag mixing will be performed again to make these The materials with high density and large particles are fully stirred and mixed. The pitch value of the pitch P3 section of the shaftless variable-diameter and variable-pitch spiral stirring blade 3-3 is the smallest, and at the same time, it is the closest to the discharge port 2-1 at the bottom of the mixing box 2, and falls into the shaftless variable-diameter and variable-pitch spiral stirring blade. 3-3 pitch P3 section has a large fiber content, and materials with high density will push up a large amount of fiber content by the counterclockwise high-speed rotating screw agitator 3 under the action of the reverse time difference of the counterclockwise high-speed rotating screw agitator 3 The larger and denser materials are mixed for the second time, and the mixed material pushed down by the screw mixer 3 rotating at a low speed clockwise removes the discharge space, so that the material can be smoothly discharged from the bottom of the mixing box 2 The material is discharged from mouth 2-1. Compared with the traditional cone mixing box of the same volume, the utility model adopts the shaftless variable diameter and variable pitch spiral stirring blades 3-3 to mix materials, and the cone mixing box 2 can load more capacity of materials, At the same time, the power consumption is also reduced, and the production cost is also reduced. It is convenient and practical, and solves the problems of extrusion and grinding of granular materials, material segregation, and difficulty in discharging, which are suitable for vigorous promotion.

Claims (9)

1. A double-spiral conical mixer, comprising a feeding hopper, a conical mixing box, a shaftless variable diameter and variable pitch screw agitator, is characterized in that: the feeding hopper is installed on the top of the conical mixing box, without The shaft variable diameter and variable pitch screw agitators are respectively installed inside the cone mixing box symmetrically and inclinedly along the center line of the cone mixing box. 2 . The double-spiral conical mixer according to claim 1 , wherein the bottom of the conical mixing box is provided with a discharge port. 3 . 3. A kind of double-helix conical mixer according to claim 1, it is characterized in that: the center line of the described shaftless variable diameter and variable pitch helical agitator forms an α angle with the center line of the conical mixing box . 4. A kind of double helical conical mixer according to claim 1, it is characterized in that: described shaftless variable diameter variable pitch helical agitator is installed sequentially from left to right explosion-proof two-speed motor, reducer, no variable Diameter variable pitch spiral stirring blade. 5. a kind of double helix cone mixer according to claim 1 is characterized in that: the large diameter value of the shaftless variable diameter variable pitch screw stirring blade of the shaftless variable diameter variable pitch screw agitator is D1, The small diameter value of the shaftless variable diameter variable pitch spiral stirring blade is D2. 6. a kind of double helix cone mixer according to claim 1 is characterized in that: the shaftless variable diameter variable pitch screw stirring blade of described shaftless variable diameter variable pitch screw agitator has three kinds of pitches, respectively P1 , P2, P3. 7. A double helical conical mixer according to claim 3, characterized in that: the value of the α angle is in the range of 5°-20°. 8. A kind of double-helix conical mixer according to claim 1 or claim 5, characterized in that: the large diameter of the shaftless variable diameter variable pitch screw stirring blade of the shaftless variable diameter variable pitch screw agitator The value of D1 is in the range of 100mm-200mm, and the value of the small diameter D2 of the shaftless variable-diameter and variable-pitch helical stirring blade is in the range of 70mm-140mm. 9. A kind of double-helix conical mixer according to claim 1 or claim 6, characterized in that: three kinds of shaftless variable-diameter and variable-pitch helical stirring blades of the shaftless variable-diameter and variable-pitch helical agitator. The values of the pitches P1, P2 and P3 are respectively in the range of 80mm-100mm, 60mm-80mm and 40mm-60mm.

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