Powder mixing machine and mixing method thereof

Abstract

The invention discloses a powder mixing machine and a mixing method thereof, and relates to the field of material mixing, the powder mixing machine comprises a main body and rotating sheets, and the rotating sheets are mounted on two sides of the main body; a rotating shaft is fixedly mounted at one end of the rotating piece and rotationally connected with the main body, and the rotating piece can rotate in the main body; the two ends of the swing rod are rotationally connected with the movable ends of the two rotating pieces respectively, the center of the swing rod coincides with the sphere center of the body, and the rotating pieces are used for driving the swing rod to swing with the sphere center as the original point when rotating. The rotating piece can swing up and down under the driving of the motor to realize the stirring and mixing of materials, the oscillating rod can rotate along with the rotating piece, the farther the distance from the ball center is, the faster the motion speed of the oscillating rod is, the faster the motion speed of the materials is, and the pressure intensity is smaller, while the motion speed of the materials at the ball center is relatively slow, and the pressure intensity is larger. Under the action of pressure difference, the materials can move to the end part of the oscillating rod and can be better circularly stirred in the main body.

Description

Technical Field

[0001] The invention relates to the field of material mixing, in particular to a powder mixer and a mixing method thereof. Background Art

[0002] The main component of gypsum is calcium sulfate (CaSO4), which is divided into edible gypsum and building gypsum. Edible gypsum usually exists in a semi-hydrated form, that is, calcium sulfate hemihydrate (CaSO41 / 2H2O). It is mainly used as a coagulant in food processing, especially in the production of tofu, to help protein coagulate into a solid state. Industrial gypsum is widely used in model making, sulfuric acid production, paper filler, and paint filler. In construction, gypsum can be used as a cement retarder and can also be used as a building partition wall and interior wall, with good sound insulation effect.

[0003] In the process of gypsum production, such as the production of edible gypsum, in order to improve performance or meet specific food processing requirements, it is necessary to add a small amount of food-grade auxiliary materials such as anti-caking agents or humidity regulators to the gypsum powder. For example, in the process of building gypsum or industrial gypsum production, it is necessary to add retarders (such as borax, potassium sodium tartrate, lime-activated glue, etc.), water retainers (such as hydroxypropyl methylcellulose, methylcellulose, carboxymethyl cellulose, starch-based water retainers), etc. to the gypsum powder, and the added raw materials need to be mixed with the gypsum powder.

[0004] When mixing, the gypsum powder and the added raw materials need to be placed in a mixer (or stirring device) for mixing, which mainly includes a vertical mixer or a horizontal mixer. The vertical mixer mainly uses a stirring blade to stir, and the motor drives the blade to rotate in a fixed reverse direction inside the mixer to achieve the mixing of the powder. The horizontal mixer is mostly a drum structure, and the motor drives the drum to rotate in a certain direction to achieve the mixing of the materials. Since the material can only move in one direction in the mixer body, it takes a long time to achieve a better mixing effect. Especially for the vertical mixer, the material moves irregularly inside the mixer, and the fluidity of the gypsum powder is relatively poor. Since the rotation of the blade must ensure that there is enough movement space between the blade and the side wall of the body, it also leads to the problem of mixing dead angles far away from the blade. Summary of the invention

[0005] The object of the present invention is to provide a powder mixer and a mixing method thereof to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a powder mixer, comprising: The main body is a spherical structure, and the upper end and the bottom of the main body are respectively provided with a feed inlet and a discharge outlet; There are two rotating pieces, which are symmetrically mounted on both sides of the main body; a rotating shaft is fixedly mounted on one end of the rotating piece, and the rotating shaft is rotatably connected to the main body, and the rotating shaft of one rotating piece is connected to a motor, so that the rotating piece can rotate inside the main body; The two ends of the swing rod are respectively connected to the movable ends of the two rotating pieces, and the center of the swing rod coincides with the spherical center of the main body. When the rotating piece rotates, it is used to drive the swing rod to swing with the spherical center as the origin.

[0007] Preferably, a mixing component is further included, and the mixing component is installed on the swing rod. When the swing rod swings, it is used to carry the mixing component to move inside the main body.

[0008] Preferably, the mixing component comprises a vertical rod, and the vertical rod is vertically fixed to the swing rod, and the intersection of the vertical rod and the swing rod coincides with the center of the ball; Sliding plates are rotatably mounted on both ends of the vertical rod, and the two sliding plates are respectively slidably mounted in the feed port and the discharge port.

[0009] Preferably, a plurality of connecting rings are fixedly installed between the vertical rod and the swing rod, and on the vertical rod, and the plurality of connecting rings form a circular structure, and the center of the circle coincides with the center of the sphere.

[0010] Preferably, the mixing component comprises an outer ring and an inner ring, the centers of the outer ring and the inner ring coincide with the center of the sphere, a plurality of connecting rods are fixedly installed at the center of the swing rod, and the other ends of the connecting rods are fixedly connected to the inner ring; The upper end and the bottom of the inner ring are rotatably connected to the inner ring side wall of the outer ring through a rotating shaft; The front and rear side walls of the outer ring of the outer circular ring are fixedly mounted with a support shaft, and the support shaft is rotatably connected to the inner side wall of the main body; The extension lines of the two support shafts intersect with the extension lines of the two rotating shafts vertically, and the intersection coincides with the center of the sphere.

[0011] Preferably, the swing rod is arranged perpendicular to the inner ring, and the center of the swing rod coincides with the center of the inner ring.

[0012] Preferably, a first retaining ring and a second retaining ring are respectively disposed on the outer sides of the feed port and the discharge port, and one end of the first retaining ring and the second retaining ring are rotatably connected to the main body through a first rotating shaft; The first baffle ring and the second baffle ring are arc-shaped sheet structures and are arranged concentrically with the main body. The first baffle ring and the second baffle ring can rotate outward around the first rotating axis to open the feed port or the discharge port.

[0013] Preferably, the main body is composed of an upper shell and a lower shell, the upper shell and the lower shell are fixed together by bolts, and a mounting hole for mounting the rotating shaft is opened on the upper shell.

[0014] Preferably, the side walls of the feed port and the discharge port are provided with sliding grooves matching the sliding plate. When the swing arm is rotated by the rotating plate, the vertical rod can rotate on the sliding plate, and at the same time, the two ends of the vertical rod will swing left and right, driving the sliding plate to slide in the sliding groove.

[0015] Preferably, a support is fixedly mounted on the bottom of the lower shell, and the shell of the motor is fixedly connected to the support.

[0016] A powder mixing method, using the above-mentioned powder mixer, when mixing raw materials in a powder state, the rotating piece rotates to drive the swing rod to swing, the ends of the rotating piece and the swing rod are farthest from the center of the ball, and the swing amplitude and the swing speed are the largest, the greater the swing force generated on the powder material, the greater the rolling amplitude of the material, and the closer to the center of the ball, the smaller the swing speed and the swing amplitude, the smaller the force received by the material, and the material far from the center of the ball will roll towards the position close to the center of the ball under the action of the rotating piece and the swing rod; During the rotation of the rotating plate and the swing rod, the farther away from the center of the ball, the faster the swing speed, which makes the material move faster. The faster the speed, the smaller the pressure. The material close to the center of the ball moves at a slower speed and has a higher pressure. Under the action of the pressure difference, the circulation between the materials will be improved and the mixing of the materials will be accelerated.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a main body of a spherical structure, and symmetrically arranged rotatable rotating plates inside the main body, a swing rod is rotatably installed between the movable ends of the rotating plates, and the center of the swing rod coincides with the spherical center of the main body, and the material is put into the interior of the main body from the feeding port of the main body, and the rotating plate will swing up and down driven by the motor to achieve stirring and mixing of the material, and the swing rod will rotate with the rotating plate, the farther from the center of the sphere, the faster the movement speed of the swing rod, the faster the movement speed of the material is also, and the pressure is relatively small, while the movement speed of the material at the center of the sphere is relatively slow, and the pressure is relatively large. Under the action of the pressure difference, the material will move to the end of the swing rod, which can be better circulated and stirred inside the main body, thereby improving the stirring efficiency, and the circulated stirring makes the material circulate in the main body to avoid the occurrence of dead corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present invention as a whole; Figure 2 This is a structural diagram of Embodiment 1 of the present invention; Figure 3 It is a cross-sectional view of the rotating rod and the swinging rod of the present invention; Figure 4 It is a cross-sectional view of the upright pole of the present invention on the left side; Figure 5 It is a cross-sectional view of the upright pole of the present invention on the right side; Figure 6 This is an overall structural diagram of the push plate and the vertical pole of Example 1 of the present invention; Figure 7 This is a structural diagram of embodiment 2 of the present invention.

[0019] In the figure: 1. main body; 101. upper shell; 102. lower shell; 2. first baffle ring; 3. feed port; 4. rotating plate; 5. swing rod; 6. connecting ring; 7. vertical rod; 8. mounting hole; 9. second baffle ring; 10. discharge port; 11. support; 12. motor; 13. sliding plate; 14. outer ring; 15. inner ring; 16. connecting rod; 17. support shaft; 18. push plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7 In this embodiment, a powder mixer is provided, including a main body 1, the main body 1 is composed of an upper shell 101 and a lower shell 102, and the volume of the upper shell 101 is greater than the volume of the lower shell 102. Figure 1 and Figure 2 As shown, a mounting plate is fixedly mounted on the bottom of the upper shell 101, and bolt holes are provided on the mounting plate and the lower shell 102, and bolts are inserted into the bolt holes, and the upper shell 101 and the lower shell 102 are fixed together by bolts to form a main body 1 of a spherical structure. A support 11 is fixedly mounted on the lower shell 102, and the support 11 supports the main body 1.

[0022] The upper end of the main body 1 is provided with a feed inlet 3, and the bottom of the main body 1 is provided with a discharge outlet 10. Figure 1-Figure 4As shown, the structure of the feed port 3 and the discharge port 10 is the same. The outside of the feed port 3 and the discharge port 10 are respectively provided with a first retaining ring 2 and a second retaining ring 9, and the first retaining ring 2 and the second retaining ring 9 are respectively rotatably mounted with a first rotating shaft at one end close to the side of the main body 1, and the two first rotating shafts are respectively fixedly connected to the feed port 3 and the discharge port 4 of the main body 1 (not shown in the figure), and the extension line of the first rotating shaft passes through the spherical center of the main body 1. In this embodiment, the first retaining ring 2 and the second retaining ring 9 are both arc-shaped sheet structures, and the inner curvature of the first retaining ring 2 and the second retaining ring 9 is the same as the outer curvature of the main body 1. The first retaining ring 2 and the second retaining ring 9 can rotate around the first rotating shaft. When the first retaining ring 2 or the second retaining ring 9 rotates outward, the feed port 3 or the discharge port 10 can be in an open state. Moreover, when the first retaining ring 2 or the second retaining ring 9 is rotated, the first retaining ring 2 or the second retaining ring 9 can move along the outer spherical surface of the main body 1, ensuring that the first retaining ring 2 or the second retaining ring 9 is smoother when opening.

[0023] The other end of the second retaining ring 9 is detachably connected to the main body 1 by bolts. When unloading is required, the bolts are removed and the second retaining ring 9 is rotated to open the discharge port 10 so that the material can be discharged to the outside.

[0024] like Figure 2 and Figure 3 As shown, two rotating pieces 4 are rotatably mounted inside the main body 1, and a rotating shaft is fixedly mounted at one end of the two rotating pieces 4. The upper shell 101 is provided with mounting holes 8 for mounting the rotating shaft. The mounting holes 8 are symmetrically distributed, and the rotating shaft is rotatably mounted inside the mounting holes 8. Figure 2 and Figure 3 As shown, the two rotating pieces 4 are symmetrically distributed with the center of the main body 1 as the symmetry point. A swing rod 5 is installed between the movable ends of the two rotating pieces 4. Figure 2 As shown, the movable ends of the two rotating pieces 4 are provided with mounting holes, and the two ends of the swing rod 5 are respectively rotatably mounted in the mounting holes of the two rotating pieces 4, and the center of the swing rod 5 is aligned with the spherical center of the main body 1 (as shown in FIG. Figure 3 The support 11 is fixedly mounted with a motor 12, wherein a rotating shaft of a rotating piece 4 is fixedly connected to an output end of the motor 12, and the motor 12 is used to provide a rotating power to the rotating piece 4. When the rotating piece 4 rotates, it can drive both ends of the swing rod 5 to rotate together, and at the same time, the swing rod 5 rotates with the center of the ball (i.e. Figure 3 o in the figure) is the origin of the swing, that is, the movement and rotation of the two ends of the swing rod 5 are symmetrical, (such as Figure 3 As shown by the middle arrow b, with the center point or the center of the spherical center of the swing rod 5 as the rotation point, one end of the swing rod 5 follows the rotation of the rotating piece 4, and the origin trajectory of the swing rod 5 is a conical structure).

[0025] When mixing raw materials in powder form, the rotating piece 4 will stir and mix the powdered raw materials up and down inside the main body 1 of the spherical structure during the rotation process. When the rotating piece 4 rotates and drives the swing rod 5 to swing, the ends of the rotating piece 4 and the swing rod 5 are farthest from the center of the ball, and their swing amplitude and swing speed are the largest. The greater the swing force generated on the powdered material, the greater the rolling amplitude of the material. The closer to the center of the ball, the smaller the swing speed and swing amplitude, and the smaller the force received by the material. The material far from the center of the ball will roll towards the position close to the center of the ball under the action of the rotating piece 4 and the swing rod 5. Figure 3 As shown by the solid arrow c, the material in the center of the sphere will move downward, thereby forming a circulation inside the main body 1, thereby improving the mixing effect of the powder material.

[0026] Moreover, during the rotation of the rotating plate 4 and the swing rod 5, the farther away from the center of the ball, the faster the swing speed, which makes the material move faster. The faster the speed, the smaller the pressure. The material near the center of the ball moves at a slower speed and has a higher pressure. Under the action of the pressure difference, the circulation between the materials will be improved and the mixing of the materials will be accelerated.

[0027] A vertical rod 7 is fixedly installed in the middle of the swing rod 5. Figure 2 and Figure 4 As shown, the vertical rod 7 and the swing rod 5 are vertically crossed together, and the intersection of the vertical rod 7 and the swing rod 5 coincides with the spherical center of the main body 1. Both ends of the vertical rod 7 are rotatably mounted with sliding pieces 13, and the two sliding pieces 13 are slidably mounted in the feed port 3 and the discharge port 10 respectively. In this embodiment, the side walls of the feed port 3 and the discharge port 10 are both provided with sliding grooves matching the sliding pieces 13, and the sliding pieces 13 are slidably mounted in the sliding grooves. Since the swing rod 5 is perpendicular to the vertical rod 7, when the swing rod 5 swings inside the handle of the main body 1 (such as Figure 4 As shown by the arrow b in the middle, the vertical rod 7 will rotate on the sliding piece 13 following the swing center of the swing rod 5, and at the same time, the two ends of the vertical rod 7 will swing together with the swing rod 5, and slide the sliding piece 13 in the slide groove, as shown in FIG. Figure 4 As shown by the middle arrow a, the movement trajectory of one end of the vertical rod 7 is a fan-shaped structure, and the movement directions of the sliding pieces 13 at both ends of the vertical rod 7 are opposite. When the vertical rod 7 moves left and right, the materials will be mixed left and right.

[0028] Combination Figure 4 The motion diagram of the vertical rod 7 and the swing rod 5 is shown in FIG. Figure 4 Take the left rotating piece 4 as an example: when the rotating piece 4 rotates upward with the swing rod 5 (such as Figure 4 The powder material is lifted up by the rotating piece 4 and the end of the swing rod 5, and the material is stirred in a conical shape. At the same time, the top of the vertical rod 7 moves to the right and pushes the material to the right, so that the material is stirred in the horizontal direction (such as Figure 4As shown by arrow a), the material is pushed to the right at the same time. When the rotating piece 4 and the swing rod 5 move to the top, the vertical rod 7 moves to the rightmost side (as shown by arrow a). Figure 5 As shown in the figure), the movement direction of the bottom end of the vertical rod 7 is symmetrical with the movement direction of the top end; when the rotating piece 4 and the swing rod 5 move from the top to the bottom, the top end of the vertical rod 7 moves to the left, and when the rotating piece 4 and the swing rod 5 move to the bottom, the vertical rod 7 moves to the left. The movement direction and process of the rotating piece 4 on the right are completely opposite to those of the rotating piece 4 on the left, which will not be elaborated here. During the swinging process of the vertical rod 7, while stirring the materials left and right, the materials can also be pushed. Since the vertical rod 7 can only swing in a fan shape on the vertical plane, the effect of pushing the raw materials is obviously greater than the stirring effect on the materials. Therefore, the push plate 18 is fixedly installed at the bottom (or / and top) of the vertical rod 7, as shown in FIG. Figure 6 As shown, the push plate 18 improves the function of the vertical rod 7 to push the material, but the push plate 18 is connected to the inner side wall of the main body 1 to prevent the inner side wall of the main body 1 from interfering with the movement of the push plate. The height of the push plate is a maximum of half the radius of the main body 1 (specifically, it can be set according to actual use requirements). When pushing the material left and right, the material can also be stirred. When the upper end of the vertical rod 7 moves downward from the highest point (that is, when the top of the vertical rod 7 swings downward from the vertical state), when the bottom of the vertical rod 7 moves upward from the lowest point to push the material, the powder material is pushed away by the push plate 18 along the direction of movement of the vertical rod 7. The space behind the push plate 18 is in a sparse state, and new materials can fall into the space behind it. After the push plate 18 pushes the material, when the vertical rod 7 swings left and right, the mixing of the materials is accelerated.

[0029] like Figure 2 As shown, multiple connecting rings 6 are fixedly installed between the vertical rod 7 and the swing rod 5, and between the two ends of the vertical rod 7. The multiple connecting rings 6 form a circular structure, and the center of the circle coincides with the center of the sphere. The connecting rings 6 between the vertical rod 7 and the swing rod 5 are arranged perpendicular to the plane where the connecting rings 6 on the vertical rod 7 are located. The connecting rings 6 will follow the swing of the swing rod 5 and swing with the center of the sphere as the swing point: that is, the top and bottom of the connecting ring 6 will follow the vertical rod 7 to swing left and right, and will also rotate with the vertical rod 7, while the left and right sides of the connecting ring 6 will follow the swing rod 5 to swing back and forth. Since the movement direction of the connecting ring 6 is multi-directional, when the connecting ring 6 swings inside the main body 1, the multi-directional movement will improve the mixing effect of the materials.

[0030] A plurality of connecting rings 6 and vertical rods 7 form a material mixing component, and driven by the swing rod 5, the powder material inside the main body 1 is stirred and mixed.

[0031] See also Figure 7In this embodiment, the mixing component is designed as a ring-shaped structure, and the specific design scheme is as follows: the mixing component includes an inner ring 15, and the center of the inner ring 15 is arranged to coincide with the center of the sphere of the main body 1. A plurality of connecting rods 16 are fixedly installed at the center of the swing rod 5, one end of the connecting rod 16 is vertically fixed to the swing rod 5, and the other end of the connecting rod 16 is fixedly connected to the inner side wall of the inner ring 15, such as Figure 7 As shown. In this embodiment, since the swing rod 5 and the inner ring 15 are in a vertically arranged state, and the center of the swing rod 5 coincides with the center of the circle of the inner ring 15, when the left end of the swing rod 5 rotates backward, the rear side of the inner ring 15 swings to the right, and at the same time, the right end of the swing rod 5 rotates forward, and the front side of the inner ring 15 swings to the left; when the left end of the swing rod 5 rotates upward, the upper side of the inner ring 15 swings to the right, and at the same time, the right end of the swing rod 5 rotates downward, and the lower side of the inner ring 15 swings to the left. It can be seen that during the movement of the inner ring 15, the upper and lower front and rear sides of the inner ring 15 can be swung left and right in sequence inside the main body 1, and the materials can be mixed according to the swinging sequence of the inner ring 15 to achieve stirring and mixing of the materials. In addition, the inner ring 15 has a sufficient thickness. During the swinging of the inner ring 15 in sequence, part of the materials will be moved with the inner ring 15 to achieve pushing and mixing of the materials.

[0032] An outer ring 14 is also arranged outside the inner ring 15, and the center of the outer ring 14 and the center of the inner ring 15 are arranged to coincide with the center of the ball of the main body 1. A rotating shaft is fixedly installed at the upper end and the bottom of the inner ring 15, and shaft holes matching the rotating shaft are opened at the upper and lower sides of the inner side of the outer ring 14, and the rotating shaft is rotatably installed in the shaft holes. Support shafts 17 are fixedly installed on the front and rear sides of the outer ring 14, and the support shaft 17 is rotatably installed on the inner side wall of the main body 1. The extension lines of the two support shafts 17 intersect vertically with the extension lines of the two rotating shafts, and the intersection coincides with the center of the ball of the main body 1.

[0033] When the rotating piece 4 moves with the swing rod 5, the swing rod 5 brings the inner ring 15 to swing left and right in the outer ring 14 with the rotating shaft as the axis. Figure 7 As shown, when the left end of the swing rod 5 rotates backward, the rear side of the inner ring 15 swings to the right with the shaft as the axis, and at the same time, the right end of the swing rod 5 rotates forward, and the front side of the inner ring 15 swings to the left. The swinging of the front and rear sides of the inner ring can stir and mix the materials.

[0034] When the left end of the swing rod 5 rotates upward, the upper side of the inner ring 15 swings to the right, the right end of the swing rod 5 swings downward, and the bottom of the inner ring 15 swings to the left. Under the connection of the rotating shaft, the top and bottom of the outer ring 14 will swing left and right under the drive of the inner ring 15, and the outer ring 14 rotates around the support shaft 17. When the two ends of the swing rod 5 move to the highest point or the lowest point, the inner ring 15 and the outer ring 14 overlap and are on the same plane. When the two ends of the swing rod 5 are in a horizontal state, that is, when the two ends of the swing rod 5 are at the front or the back, the front and rear sides of the inner ring 15 are respectively at the leftmost or rightmost position, and the outer ring is in a state perpendicular to the horizontal plane. The angle between the inner ring 15 and the outer ring 14 is the largest. As the inner ring 15 rotates, the inner ring 15 and the outer ring 14 move closer to each other, and the angle between the two gradually decreases. For example, when the left end of the swing rod 5 rotates to the front end, the front side of the inner ring 15 is at the rightmost position, the back side of the inner ring 15 is at the left side, and the outer ring 14 is in a vertical state. As the swing rod 5 rotates upward, the upper end of the inner ring 15 will gradually move to the right, and the bottom of the inner ring 15 will gradually move to the left. The upper side of the inner ring 15 will move the upper part of the outer ring 14 to the right, and the lower side of the inner ring 15 will move the bottom of the outer ring 14 to the left. The front side of the inner ring 15 starts to move to the left, and the back side of the inner ring 15 moves to the right, which is just opposite to the direction of the outer ring 14 rotating around the support shaft 17, that is, the front side (or back side) of the outer ring 14 and the front side (or back side) of the inner ring 15 move closer to each other until the two overlap and move in the opposite direction as the swing rod 5 rotates. In the process of approaching each other, the relative movement speed is faster, which can better drive the mixing and stirring of the materials. When the two move closer to each other, they can drive the materials closer to each other, which is more helpful to improve the mixing effect between the materials.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder mixer, characterized in that: include A main body (1), the main body (1) is a spherical structure, and a feed inlet (3) and a discharge outlet (10) are respectively provided at the upper end and the bottom end of the main body (1); Two rotating pieces (4) are provided and are mounted on both sides of the main body (1) in a centrally symmetrical manner; a rotating shaft is fixedly mounted on one end of the rotating piece (4), the rotating shaft is rotatably connected to the main body (1), the rotating shaft of one rotating piece (4) is connected to a motor (12), and the rotating piece (4) is capable of rotating inside the main body (1); The two ends of the swing rod (5) are respectively rotatably connected to the movable ends of the two rotating pieces (4); the center of the swing rod (5) coincides with the spherical center of the main body (1); when the rotating piece (4) rotates, it is used to drive the swing rod (5) to swing with the spherical center as the origin; It also includes a mixing component, which is mounted on a swing rod (5), and the swing rod (5) is used to carry the mixing component to move inside the main body (1) when swinging; The mixing component comprises a vertical rod (7), wherein the vertical rod (7) and the swing rod (5) are vertically fixed together, and the intersection of the vertical rod (7) and the swing rod (5) coincides with the center of the ball; Sliding plates (13) are rotatably mounted on both ends of the vertical rod (7), and the two sliding plates (13) are slidably mounted in the feed port (3) and the discharge port (10), respectively.

2. A powder mixer according to claim 1, characterized in that: A plurality of connecting rings (6) are fixedly mounted between the vertical rod (7) and the swing rod (5), and on the vertical rod (7); the plurality of connecting rings (6) form a circular structure, and the center of the circle coincides with the center of the sphere.

3. A powder mixer according to claim 1, characterized in that: The mixing component comprises an outer ring (14) and an inner ring (15), the centers of the outer ring (14) and the inner ring (15) both coincide with the center of the sphere, a plurality of connecting rods (16) are fixedly mounted at the center of the swing rod (5), and the other ends of the connecting rods (16) are fixedly connected to the inner ring (15); The upper end and the bottom of the inner ring (15) are rotatably connected to the inner ring side wall of the outer ring (14) via a rotating shaft; A support shaft (17) is fixedly mounted on the front and rear side walls of the outer ring (14), and the support shaft (17) is rotatably connected to the inner side wall of the main body (1); The extension lines of the two support shafts (17) and the extension lines of the two rotating shafts intersect vertically, and the intersection coincides with the center of the sphere.

4. A powder mixer according to claim 3, characterized in that: The swing rod (5) and the inner ring (15) are arranged vertically, and the center of the swing rod (5) coincides with the center of the inner ring (15).

5. A powder mixer according to claim 1, characterized in that: A first retaining ring (2) and a second retaining ring (9) are respectively arranged on the outer sides of the feed port (3) and the discharge port (10); one end of the first retaining ring (2) and the second retaining ring (9) are rotatably connected to the main body (1) via a first rotating shaft; The first baffle ring (2) and the second baffle ring (9) are arc-shaped sheet structures and are arranged concentrically with the main body (1). The first baffle ring (2) and the second baffle ring (9) can rotate outward around the first rotation axis to open the feed port (3) or the discharge port (10).

6. A powder mixer according to claim 1, characterized in that: The main body (1) is composed of an upper shell (101) and a lower shell (102); the upper shell (101) and the lower shell (102) are fixed together by bolts; a mounting hole (8) for mounting a rotating shaft is provided on the upper shell (101).

7. A powder mixer according to claim 1, characterized in that: The side walls of the feed port (3) and the discharge port (10) are both provided with a slide groove matching the sliding plate (13). When the swing rod (5) is rotated by the rotating plate (4), the vertical rod (7) can rotate on the sliding plate (13). At the same time, the two ends of the vertical rod (7) will swing left and right, causing the sliding plate (13) to slide in the slide groove.

8. A powder mixing method, using a powder mixer according to any one of claims 1 to 7, characterized in that: When mixing raw materials in a powder state, the rotating piece (4) rotates to drive the swing rod (5) to swing. The ends of the rotating piece (4) and the swing rod (5) are farthest from the center of the ball, and their swing amplitude and swing speed are the largest. The greater the swing force generated on the powder material, the greater the rolling amplitude of the material. The closer to the center of the ball, the smaller the swing speed and swing amplitude, and the smaller the force received by the material. The material far from the center of the ball will roll towards the center of the ball under the action of the rotating piece (4) and the swing rod (5). During the rotation of the rotating plate (4) and the swinging rod (5), the farther away from the center of the ball, the faster the swinging speed, which makes the material move faster. The faster the speed, the lower the pressure. The material near the center of the ball moves at a slower speed and has a higher pressure. Under the action of the pressure difference, the circulation between the materials is improved and the mixing of the materials is accelerated.

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