CN209155583U - A dry particle mixing device - Google Patents

Abstract

The utility model relates to a kind of dry particl mixing arrangements, the blender including mixing bunker and in mixing bunker；The blender is made of agitating shaft and at least three stirring blade；Stirring blade and stirring shaft connection place are equipped with fan-shaped rib, each stirring blade is tabula rasa area close to the region of outer ledge, multiple mixing holes transversely are equipped with longitudinal on stirring blade outside tabula rasa area, multiple mixing protrusions are distributed on stirring blade outside tabula rasa area simultaneously, mixing hole and mixing protrusion are in regular distribution on stirring blade.The utility model is moved using the dynamic whole particles of the tabula rasa zone on stirring blade, particle is set to generate flowing on stirring blade, it is constantly generated behind particle and mixing hole and mixing projection contacts and shunts and converge, the also changeable original direction of motion of particle of mixing protrusion, keep particle motion more irregular, to keep particulate matter loose, it is finally reached ideal mixture homogeneity.

Description

A dry particle mixing device

technical field

The utility model relates to the technical field of dry particle mixing, in particular to a dry particle mixing device suitable for powder or granular materials in chemical, food, medicine, feed, ceramics, metallurgy and other industries.

Background technique

Mixing refers to the operation process in which the moving speed and direction of two or more materials of different components are changed under the action of external force (gravity and mechanical force), so that the particles of each component can be evenly distributed. This operation process is also called the homogenization process. The material obtained after the mixing operation is called a mixture. Traditionally, the movement between the same phases is called mixing, the movement between different phases is called stirring, and the operation of mixing high-viscosity liquids and solids with each other is called kneading or kneading. This operation is equivalent to the intermediate degree of mixing and stirring. In a broad sense, these operations are also collectively referred to as blending.

At present, the commonly used dry particle mixing device adopts a mixing bin structure, that is, a stirring device is installed in the mixing bin. The stirring device is composed of a plurality of stirring blades. Most of the stirring blades are smooth blades. Although the stirring resistance is small, the mixing effect is relatively low. Difference.

The Chinese Patent Application Publication No. CN 105498570A discloses "a novel stirring blade of an electric stirrer", which includes a blade body, and the middle parts of both ends of the blade body are respectively provided with isosceles trapezoid first protrusions and second protrusions The upper part of the first protrusion and the second protrusion are respectively fixed with the isosceles trapezoid third protrusion and the fourth protrusion, which are evenly distributed on the surface of the third protrusion and the fourth protrusion. There are aluminum protrusions distributed along the extension direction of the protrusions; the blade body between the protrusions is evenly distributed with a number of cylindrical protrusions distributed along the long axis of the blade body, and the two ends of the blade body are also called four. through holes. This technical solution is provided with isosceles trapezoidal protrusions and cylindrical protrusions on the blade body, but its function is to reduce the direct collision force between the blade end face and the material when the stirring blade collides with the material, so as to avoid serious wear; The purpose of opening the through holes is to reduce the load of the stirring blade and prolong the service life of the stirring blade; the aluminum sheet protrusions arranged on the surfaces of the third protrusion and the fourth protrusion are to make the materials left on the mixer It is separated (equivalent to a scraper) and further stirred, so that the material is fully stirred.

The Chinese patent with the authorization announcement number CN204661796 U discloses "a stirring device for aluminum slag recovery". The stirring blade is composed of a main shaft and two half-fan blades respectively arranged on both sides of the main shaft. The edges of the fan blades are all arc-shaped structures, and the hollow structures of the two half-fan blades can be in various shapes such as rectangles, triangles, circles, and polygons. However, the purpose of setting the hollow structure is to reduce the problem of the reduction of aluminum recovery rate caused by wear.

SUMMARY OF THE INVENTION

The utility model provides a dry particle mixing device, which enables the original layered particles to flow and then fully mix through the stirring action of a stirring blade with a special structure; wherein the light plate area on the stirring blade is used to drive all the particles to move, so that the particles are stirred during the stirring. Flow is generated on the blade, and the particles contact the mixing holes and the mixing protrusions to continuously generate shunting and confluence, and the mixing protrusions can also change the original moving direction of the particles, making the moving direction of the particles more irregular, thereby loosening the particles. , and finally achieve the ideal mixing uniformity, and the fan-shaped ribs can prevent the accumulation of particles at the angle between the stirring blades.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A dry particle mixing device comprises a mixing bin and a stirrer arranged in the mixing bin; the stirrer is composed of a stirring shaft and at least 3 stirring blades; fan-shaped ribs are arranged at the connection between the stirring blades and the stirring shaft, and each The area of the stirring blade close to the outer edge is the light plate area. The stirring blade outside the light plate area is provided with a plurality of mixing holes in the horizontal and vertical directions. Holes and mixing protrusions are regularly distributed on the stirring blade.

The mixing holes are one or more of circular through holes, triangular through holes, and polygonal through holes.

The mixing protrusions are one or more of cylindrical protrusions, semi-cylindrical protrusions and hemispherical protrusions.

The stirring blade is a rectangular stirring blade, and the mixing hole is a circular through hole; 3 rows of circular through holes are arranged in the transverse direction on the stirring blade except the light plate area, and each row includes 9 circular through holes arranged in the longitudinal direction. ; On the stirring blade between the 3 rows of circular through holes, 2 rows of hemispherical projections are arranged in the transverse direction, and each row includes 8 hemispherical projections arranged in the longitudinal direction; on the outside of 1 row of circular through holes near the light plate area There is 1 row of cylindrical protrusions, including 8 cylindrical protrusions arranged in the longitudinal direction; 1 row of semi-cylindrical protrusions are provided at the edges of the two short sides of the stirring blade, and each row includes 3 semi-cylindrical protrusions rise.

The number of the stirring blades is 3, and the angle between each stirring blade is 120°.

The edges of the stirring blades all have smooth transitions.

The mixing silo is composed of an upper silo body and a lower silo body, the upper silo body is a rectangular silo body, and the lower silo body is a semi-cylindrical silo body. Realize the fixation with the bracket; the two ends of the connection between the upper and lower silo bodies are respectively provided with bearing seats, the stirring shaft is rotatably connected with the bearing seats through the bearings, and one end of the stirring shaft extends out of the mixing silo to connect with the driving device; the upper silo is connected with the driving device; The top of the body is provided with a feeding port, which is closed by the end cover of the feeding port; the bottom of the lower silo body is provided with a discharging port, which is closed by the end cover of the discharging port; the bottom of the discharging port is provided with a discharging chute.

The two sides of the feeding port are respectively provided with grooves, and the two sides of the end cover of the feeding port extend into the corresponding grooves and can move along the grooves as a whole, so as to form a push-pull feeding port closed structure.

The two sides of the discharge port are respectively provided with grooves, the end cover of the discharge port has an arc that matches the lower bin body, and the two sides of the discharge port end cover are respectively provided with bosses to cooperate with the grooves of the discharge port to form a push-pull A closed structure of the discharge port; one end of the end cover of the discharge port is provided with a handle.

The bracket is fixed on the ground through anchor bolts.

Compared with the prior art, the beneficial effects of the present utility model are:

Through the stirring action of the special structure of the stirring blade, the originally layered particles can flow and be fully mixed; the light plate area on the stirring blade is used to drive all the particles to move, so that the particles flow on the stirring blade, and the particles are mixed with the mixing holes. After the material protrusions are in contact, the diversion and confluence are continuously generated. The mixing protrusions can also change the original movement direction of the particles, making the movement direction of the particles more irregular, so as to loosen the particles, and finally achieve the ideal mixing uniformity, fan-shaped ribs. It can prevent the accumulation of particles at the angle between the stirring blades.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of a dry particle mixing device according to the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of the agitator according to the present invention.

FIG. 3 is a schematic three-dimensional structure diagram of the mixing bin according to the present invention.

FIG. 4 is a schematic three-dimensional structure diagram of the discharge port end cover of the present invention.

FIG. 5 is a schematic three-dimensional structure diagram of the bracket according to the present invention.

In the picture: 1. Mixing bin 1-1. Upper bin body 1-2. Lower bin body 1-3. Feed port 1-4. Discharge port 1-5. Flange plate 1-6. Bearing seat 2. Stirring shaft 2-1. Stirring blade 2-1a. Circular through hole 2-1b. Hemispherical protrusion 2-1c. Cylindrical protrusion 2-1d. Semi-cylindrical protrusion 2-1e. Light plate area 2-2 .Keyway 2-3. Fan-shaped ribs 3. Feed port end cover 4. Outlet port end cover 4-1. Boss 4-2. Handle 5. Bearing end cover 6. Bracket 6-1. Foot 6- 2. Rib plate 7. Discharge chute

Detailed ways

The specific embodiments of the present utility model will be further described below in conjunction with the accompanying drawings:

As shown in Figures 1 and 2, the dry particle mixing device of the present invention comprises a mixing bin 1 and a stirrer arranged in the mixing bin 1; the stirrer is composed of a stirring shaft 2 and at least three stirring blades 2-1 composition; a fan-shaped rib 2-3 is arranged at the connection between the stirring blade 2-1 and the stirring shaft 2, and the area near the outer edge of each stirring blade 2-1 is the light plate area 2-1e, and the area outside the light plate area 2-1e The stirring blade 2-1 is provided with a plurality of mixing holes in the horizontal and vertical directions, and the mixing blades outside the light plate area 2-1e are also distributed with a plurality of mixing protrusions. The mixing holes and the mixing protrusions are used for mixing. Regular distribution on leaves 2-1.

The mixing holes are one or more of circular through holes 2-1a, triangular through holes, and polygonal through holes.

The mixing protrusions are one or more of cylindrical protrusions 2-1c, semi-cylindrical protrusions 2-1d, and hemispherical protrusions 2-1b.

As shown in Fig. 2, the stirring blade 2-1 is a rectangular stirring blade, and the mixing hole is a circular through hole 2-1a; three rows are arranged laterally on the stirring blade 2-1 except for the area of the light plate 2-1e Circular through holes 2-1a, each row includes 9 circular through holes 2-1a arranged in the longitudinal direction; 2 rows of hemispheres are arranged in the transverse direction on the stirring blade 2-1 between the 3 rows of circular through holes 2-1a Shape protrusions 2-1b, each row includes 8 hemispherical protrusions 2-1b arranged in the longitudinal direction; a row of cylindrical protrusions is provided on the outer side of a row of circular through holes 2-1a close to the light plate area 2-1e 2-1c, including 8 cylindrical protrusions 2-1c arranged in the longitudinal direction; 1 row of semi-cylindrical protrusions 2-1d are respectively set at the edges of the 2 short sides of the stirring blade 2-1, and each row includes 3 Semi-cylindrical protrusions 2-1d.

The number of the stirring blades 2-1 is three, and the included angle between the stirring blades 2-1 is 120°.

The edges of the stirring blades 2-1 all have smooth transitions.

As shown in Figure 3, the mixing bin 1 is composed of an upper bin body 1-1 and a lower bin body 1-2, the upper bin body 1-1 is a rectangular bin body, and the lower bin body 1-2 is a semi-cylindrical bin body, Flange plates 1-5 are provided on both sides of the upper silo body 1-1 and the lower silo body 1-2, which are connected with the bracket 6 while being connected by bolts; the upper silo body 1-1 and the lower silo body 1-2 are connected Bearing seats 1-6 are respectively set at both ends of the place, the stirring shaft 2 is rotatably connected with the bearing seats 1-6 through the bearings, and one end of the stirring shaft 2 extends out of the mixing chamber 1 and is connected with the driving device; the top of the upper chamber body 1-1 The feeding port 1-3 is set, which is closed by the end cover 4 of the feeding port; the bottom of the lower bin body 1-2 is provided with the discharging port 1-4, which is closed by the end cover 4 of the discharging port; the bottom of the discharging port 1-4 Set the discharge chute 7.

The two sides of the feeding ports 1-3 are respectively provided with grooves, and the two sides of the feeding port end cover 3 extend into the corresponding grooves and can move along the grooves as a whole, so as to form a push-pull feeding port closed structure .

The two sides of the discharge port 1-4 are respectively provided with grooves. As shown in Figure 4, the discharge port end cover 4 has a radian that matches the lower bin body 1-2. The two sides of the discharge port end cover 4 The bosses 4-1 are respectively arranged to cooperate with the grooves of the discharge openings 1-4 to form a push-pull discharge opening closed structure; one end of the discharge opening end cover 4 is provided with a handle 4-2.

As shown in FIG. 5 , the bracket 6 is fixed on the ground through anchor bolts.

As shown in Figures 1 to 5, it is a specific structural form of the dry particle mixing device of the present invention. Three rectangular stirring blades 2-1 are welded on the stirring shaft 2, and the three stirring blades 2-1 are sandwiched between The angles are 120° to each other, and fan-shaped ribs 2-3 are welded at the included angles between the stirring blades 2-1. At the long edge of each stirring blade 2-1, there is a section of light plate area 2-1e with a width of H, and this area is not provided with mixing holes and mixing protrusions of any shape.

Each stirring blade 2-1 is provided with three rows of circular through holes 2-1a along the long side, and each row is provided with 9 circular through holes 2-1a. Two rows of hemispherical protrusions 2-1b are arranged in the middle of the three rows of circular holes 2-1a, and each row is provided with 8 hemispherical protrusions 2-1b. A row of cylindrical protrusions 2-1c is provided in the middle between the light plate area 2-1e and the row of circular through holes 2-1a at the most edge, with a total of 8 cylindrical protrusions 2-1c. One row of semi-cylindrical protrusions 2-1d is provided at the edges of the two short sides of the stirring blade 2-1, and each short side is provided with three semi-cylindrical protrusions 2-1d. The edges of the stirring blades 2-1 are rounded to achieve a smooth transition.

The stirring shaft 2 is a stepped shaft, one end of which extends out of the mixing chamber 1 and a keyway 2-2 is formed at the extending end, and is connected with the power output shaft of the driving device through a flat key.

The mixing bin 1 is composed of an upper bin body 1-1 and a lower bin body 1-2. The upper bin body 1-1 is a rectangular bin body, and the lower bin body 1-2 is a semi-cylindrical bin body. bolted together. Both ends of the mixing bin 1 are provided with bearing seats 1-6, and are equipped with bearing end covers 5, and the stirring shaft 2 is supported in the bearing seats through the bearings.

The feeding port 1-3 is set on the top surface of the mixing bin 1, the discharging port 1-4 is set on the bottom of the mixing bin 1, and the feeding port 1-3 and the discharging port 1-4 are equipped with corresponding end caps. And they are all push-pull closed structures; the two sides of the feed port end cover 3 cooperate with the grooves on both sides of the feed port 1-3 to form a push-pull closed structure, and the discharge port end cover 4 passes through the bosses 4 on both sides. -1 cooperates with the grooves of the discharge port 1-4 to form a push-pull closed structure; the discharge port end cover 4 has a curved surface structure, and its radian matches the radian of the cylindrical surface of the lower bin body 1-1. A discharge chute 7 is provided below the discharge port 1-4, and the discharge chute 7 is fixedly connected to the lower bin body 1-2 by welding.

Flange plates 1-5 are welded on both sides of the mixing bin 1, which are used to connect the upper and lower bin bodies to form the mixing bin 1. There are bolt holes on the flange plates 1-5, and the bolts connect the upper and lower bin bodies. At the same time, the mixing bin 1 is also fixed on the bracket 6 as a whole. The upper end of the bracket 6 is connected with the mixing bin 1 by bolts, and the lower end is fixed on the ground through the anchor and the anchor bolt.

The working principle of the dry particle mixing device of the utility model is as follows: by using stirring motion, the particles produce a phenomenon of convection mixing (or mobile mixing), and the particle agglomerates are moved from one part of the material to another in batches. Movement occurs, similar to the flow of a fluid, causing overall mixing.

When the dry particle mixing device of the present invention is in use, dry particles (or particles with fluidity) are added into the mixing bin 1 through the feeding ports 1-3, and the feeding port end cover 3 is pushed to close the feeding port. Start the drive device to drive the stirring shaft 2 to rotate. Through the stirring action, the originally layered particles flow, and the light plate area 2-1e on the stirring blade 2-1 is used to drive the particles to move, so that the particles flow on the stirring blade 2-1, and the particles pass through the stirring blade 2-1. The circular through hole 2-1a and the cylindrical protrusion 2-1c continuously generate shunting and confluence, and the hemispherical protrusion 2-1b and the semi-cylindrical protrusion 2-1d can change the original moving direction of the particles and make the particles move. The direction is irregular, so that the particulate matter is loosened, and the ideal mixing uniformity is finally achieved; the fan-shaped ribs 2-3 can prevent the particles from accumulating at the angle formed by the adjacent two stirring blades 2-1. After the mixing is completed, pull the handle 4-2 on the end cover 4 of the discharge port, open the end cover 4 of the discharge port to discharge, and the mixed particles flow out through the discharge chute 7, and after the discharge is completed, pass through the discharge port. The end cap 4 closes the outlet.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (10)

1. a dry particle mixing device, comprising a mixing bin and a stirrer arranged in the mixing bin; it is characterized in that, the stirrer is made up of a stirring shaft and at least 3 stirring blades; the stirring blade and the stirring shaft are connected with Fan-shaped ribs, the area near the outer edge of each stirring blade is a light plate area, the stirring blades outside the light plate area are provided with a plurality of mixing holes in the horizontal and vertical directions, and the stirring blades outside the light plate area are distributed with a plurality of mixing holes at the same time. Material protrusions, mixing holes and mixing protrusions are regularly distributed on the stirring blade. 2 . The dry particle mixing device according to claim 1 , wherein the mixing holes are one or more of circular through holes, triangular through holes, and polygonal through holes. 3 . 3 . The dry particle mixing device according to claim 1 , wherein the mixing protrusions are one or more of cylindrical protrusions, semi-cylindrical protrusions, and hemispherical protrusions. 4 . 4. A dry particle mixing device according to claim 1, characterized in that, the stirring blade is a rectangular stirring blade, and the mixing hole is a circular through hole; 3 rows of circular through holes, each row includes 9 circular through holes arranged longitudinally; 2 rows of hemispherical protrusions are arranged laterally on the stirring blade between the 3 rows of circular through holes, and each row includes longitudinally arranged 8 hemispherical protrusions; 1 row of cylindrical protrusions is arranged on the outer side of 1 row of circular through holes near the light plate area, including 8 cylindrical protrusions arranged in the longitudinal direction; 2 short edges of the stirring blade are provided One row of semi-cylindrical protrusions is arranged at each position, and each row includes three semi-cylindrical protrusions. 5 . The dry particle mixing device according to claim 1 , wherein the number of the stirring blades is 3, and the angle between each stirring blade is 120°. 6 . 6 . The dry particle mixing device according to claim 1 or 4 , wherein the edges of the stirring blades have smooth transitions. 7 . 7. a kind of dry particle mixing device according to claim 1, is characterized in that, described mixing warehouse is made up of upper warehouse body and lower warehouse body, upper warehouse body is rectangular warehouse body, and lower warehouse body is semi-cylindrical warehouse body , flange plates are arranged on both sides of the upper and lower silo bodies, which are connected with the bracket at the same time by bolts; bearing seats are respectively set at both ends of the connection between the upper silo body and the lower silo body, and the stirring shaft passes through the bearing and the bearing. The base is rotatably connected, and one end of the stirring shaft extends out of the mixing bin to connect with the driving device; the top of the upper bin is provided with a feeding port, which is closed by the end cover of the feeding port; the bottom of the lower bin is provided with a discharging port, which passes through the discharging port. The end cover is closed; the discharge chute is set below the discharge port. 8 . The dry particle mixing device according to claim 7 , wherein grooves are respectively set on both sides of the feeding port, and the two sides of the end cover of the feeding port extend into the corresponding grooves and can be inserted into the corresponding grooves. The whole moves along the groove, thus forming a push-pull feed opening closed structure. 9 . The dry particle mixing device according to claim 7 , wherein grooves are respectively set on both sides of the discharge port, and the end cover of the discharge port has an arc matching with the lower silo body. Two sides of the port end cover are respectively provided with bosses which cooperate with the grooves of the discharge port to form a push-pull closed structure of the discharge port; one end of the discharge port end cover is provided with a handle. 10 . The dry particle mixing device according to claim 7 , wherein the support is fixed on the ground through anchor bolts. 11 .