A powder material mixing device

Abstract

The present application provides a powder material mixing device, belonging to the technical field of powder mixing, comprising a frame and a mixing tank rotatably connected thereto; a main stirring paddle rotatably connected to the inside of the mixing tank, a rotation source for driving the main stirring paddle to rotate is arranged on the frame, a secondary stirring paddle colinear with its own central axis is sleeved on the main shaft of the main stirring paddle, the blades of the main stirring paddle and the secondary stirring paddle are both two sections of spiral blades independent of each other, and the inner edge of the spiral blade of the secondary stirring paddle is consistent with the outer edge of the spiral blade of the main stirring paddle, a linkage shaft is penetrated at the eccentric part of the main shaft of the secondary stirring paddle, and an arc groove for the linkage shaft to pass through is opened on the main shaft of the main stirring paddle; the present application can reduce the probability of powder material escaping due to the obstruction of the stirring paddle when feeding, which is conducive to the collection work.

Description

Technical Field

[0001] The present application relates to the technical field of powder mixing, and in particular to a powder material mixing device. Background Art

[0002] Powder mixing refers to the process of mixing two or more different powder materials in a certain proportion. This mixing can be achieved by mechanical stirring, vibration mixing, air flow transmission and other methods. The purpose of powder mixing is to make different powder materials fully and evenly distributed together to ensure the quality and performance of the final product. Powder mixing is a common operation step and is widely used in the fields of pharmaceuticals, chemicals, food processing, etc.

[0003] At present, the mixing of powder materials is generally completed with the help of a trough mixer. The trough mixer is usually a single-paddle design, and the mixing trough of the trough mixer can be automatically flipped with the help of a driving component to complete the unloading work. Referring to the Chinese patent document with the authorization announcement number CN220968729U and the announcement date May 17, 2024, the name is a trough mixer. When it is necessary to adjust the discharging speed or discharging amount, the mixing trough is rotated and its own inclination angle is changed through the cooperation of the adjustment mechanism, thereby meeting the needs of different discharging speeds or discharging amounts.

[0004] Referring to the above technical solution, in a trough mixer with pouring-type feeding, in order to improve the mixing effect, the stirring paddle inside the trough mixer usually adopts a spiral structure, and there is a gap between the stirring paddle and the stirring shaft for the powder material to pass through. Therefore, in the process of pouring feeding, the powder material is blocked by the stirring paddle and may be diverted and fall along the trajectory of the stirring paddle, which may easily cause the final landing point of the powder material to change, thereby bringing difficulties to the collection of the powder material. Summary of the invention

[0005] In view of this, the present application provides a powder material mixing device, which is mainly used to solve the problem that the difficulty of collecting powder materials is increased due to the obstruction of the stirring paddle when pouring the powder materials.

[0006] In order to solve the above-mentioned technical problems, the present application provides a powder material mixing device, including a frame and a mixing tank rotatably connected thereto; a main stirring paddle rotatably connected to the inside of the mixing tank, the frame is provided with a rotation source for driving the main stirring paddle to rotate, the main shaft of the main stirring paddle is provided with an auxiliary stirring paddle that is colinear with its own central axis, the blades of the main stirring paddle and the auxiliary stirring paddle are both two sections of independent spiral blades, and the inner edge of the spiral blade of the auxiliary stirring paddle is consistent with the outer edge of the spiral blade of the main stirring paddle, a linkage shaft is penetrated at the eccentric part of the main shaft of the auxiliary stirring paddle, and a circular arc groove for the linkage shaft to pass through is provided on the main shaft of the main stirring paddle.

[0007] By adopting the above technical solution, during the feeding process of powder materials, the main stirring paddle and the auxiliary stirring paddle can be combined to form an auger-type stirring paddle, and the auger-type stirring paddle can rotate with the cooperation of the rotation source and push the powder material during the feeding process, so that the final landing point of the powder material can be clearly defined.

[0008] Optionally, the spiral directions of the two sections of spiral blades on the main stirring paddle are opposite, and the spiral directions of the two sections of spiral blades on the auxiliary stirring paddle are opposite.

[0009] By adopting the above technical solution, when the main stirring paddle and the auxiliary stirring paddle are combined to form an auger-type stirring paddle and the powder material is pushed, the powder material inside the mixing tank will converge from both ends toward the center, which to a certain extent prevents the powder material from spilling from the inner corners of the mixing tank, further reducing the difficulty of collecting the powder material.

[0010] Optionally, the center of the circular arc groove is located on the central axis of the main stirring paddle, and the central angle corresponding to the circular arc groove is equal to ninety degrees.

[0011] By adopting the above technical solution, when the main stirring paddle and the auxiliary stirring paddle are in a separated state, the blades of both can be evenly distributed inside the mixing tank, thereby improving the mixing effect of the powder material.

[0012] Optionally, rubber hoops matching the linkage shaft are provided at both ends of the circular arc groove.

[0013] By adopting the above technical solution, when the rotating source stops and switches between forward and reverse directions, the elastic damping of the rubber hoop is used to reduce the collision strength between the linkage shaft and the circular arc groove.

[0014] Optionally, a driving source is provided on the frame to drive the mixing tank to flip.

[0015] By adopting the above technical solution, after the mixing of the powder materials is completed, the driving source is operated to drive the mixing tank to automatically flip over and the unloading work can be carried out.

[0016] Optionally, a silicone scraper is arranged in the interlayer of the spiral blade of the auxiliary stirring paddle, and a ridge for squeezing the silicone scraper is arranged at the outer edge of the spiral blade of the main stirring paddle.

[0017] By adopting the above technical solution, after the main stirring paddle and the auxiliary stirring paddle are combined, the silicone scraper can scrape off the powder material attached to the inner wall of the mixing tank during the feeding process.

[0018] Optionally, a material shaking assembly is provided inside the mixing tank to shake the powder material during the feeding process.

[0019] Optionally, the material shaking assembly includes two pressure bars and two supporting plates slidably connected to the inner wall of the mixing tank, the pressure bars can abut against the silicone scraper, and the first slide groove where the pressure bars are located is connected to the second slide groove where the supporting plates are located through a hydraulic pipeline.

[0020] By adopting the above technical solution, after the pressure-bearing strip contacts and receives pressure from the silicone scraper, the support plate is shaken through the cooperation of the hydraulic pipeline, thereby increasing the falling speed of the powder material.

[0021] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0022] 1. A combined stirring paddle that can form an auger-type stirring paddle during the material discharge process is used to ensure the stirring effect while making the falling trajectory of the powder material clear during the dumping process, reducing the probability of powder material escaping due to the obstruction of the stirring paddle during material discharge, which is conducive to the collection work.

[0023] 2. A silicone scraper hidden during the mixing process is provided to avoid interference with the mixing work. At the same time, the silicone scraper can be extended during the material discharge process to scrape off the powder material attached to the inner wall of the mixing tank, reducing the subsequent cleaning burden of the mixing tank.

[0024] 3. During the unloading process, the support plate where the powder material is located can be shaken, so that the powder material can be quickly discharged from the mixing tank when pouring and unloading, thereby improving the unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a powder material mixing device of the present application;

[0026] Figure 2 This is a cross-sectional view of the mixing tank in the present application after being turned over and unloading;

[0027] Figure 3 This is a structural schematic diagram of the main stirring paddle and the auxiliary stirring paddle in the present application;

[0028] Figure 4 This is a schematic diagram of the structure of the main stirring paddle and the auxiliary stirring paddle in the separated state of the present application;

[0029] Figure 5 This is an exploded view of the main stirring impeller and the auxiliary stirring impeller of this application;

[0030] Figure 6 For this application Figure 3 A partial enlarged view of the middle area A;

[0031] Figure 7 For this application Figure 5 A partial enlarged view of the middle area B;

[0032] Figure 8 For this application Figure 5 A partial enlarged view of the middle area C;

[0033] Fig. 9 For this application Figure 2 A partial enlarged view of the middle area D;

[0034] Fig.10 For this application Figure 2 A partial enlarged view of area E in the middle.

[0035] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Mixing tank; 12. Rotation source; 13. Driving source; 2. Main stirring paddle; 21. Arc groove; 3. Auxiliary stirring paddle; 31. Linkage shaft; 4. Rubber hoop; 5. Silicone scraper; 51. Raised ridge; 6. Material shaking assembly; 61. Pressure strip; 62. Support plate; 63. First slide chute; 64. Second slide chute; 65. Hydraulic pipeline. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 10 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0037] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This embodiment provides a powder material mixing device, including a frame 1 and a mixing tank 11 rotatably connected thereto.

[0038] A main stirring paddle 2 is rotatably connected inside the mixing tank 11, and a rotation source 12 for driving the main stirring paddle 2 to rotate is arranged on the frame 1. An auxiliary stirring paddle 3 which is colinear with its own central axis is sleeved on the main shaft of the main stirring paddle 2. The blades of the main stirring paddle 2 and the auxiliary stirring paddle 3 are two sections of spiral blades independent of each other, and the two sections of spiral blades are in a state of being disconnected end to end. Therefore, there is a gap between the two sections of spiral blades for the powder material to fall, and the inner edge of the spiral blade of the auxiliary stirring paddle 3 coincides with the outer edge of the spiral blade of the main stirring paddle 2. A linkage shaft 31 is penetrated at the eccentric part of the main shaft of the auxiliary stirring paddle 3, and an arc groove 21 is opened on the main shaft of the main stirring paddle 2 for the linkage shaft 31 to pass through, and the linkage shaft 31 can slide relatively inside the arc groove 21 along the trajectory of the arc groove 21.

[0039] When the rotation source 12 drives the main stirring paddle 2 to rotate forward, the auxiliary stirring paddle 3 can rotate with the main stirring paddle 2 to mix the powder materials because the linkage shaft 31 abuts one end of the arc groove 21. After the mixing work is completed, the rotation source 12 is paused. When the mixing tank 11 is turned over to discharge the materials, the rotation source 12 drives the main stirring paddle 2 to reverse. At this time, the auxiliary stirring paddle 3 is in a static state, and the linkage shaft 31 will perform relative displacement inside the arc groove 21 to make the main stirring paddle 2 and the auxiliary stirring paddle 3 rotate relative to each other, until the linkage shaft 31 abuts the other end of the arc groove 21 and the main stirring paddle 2 and the auxiliary stirring paddle 3 are combined into two-stage auger-type stirring paddles, the auxiliary stirring paddle 3 will reverse with the main stirring paddle 2, and the powder materials inside the mixing tank 11 can be discharged in an orderly manner under the push of the auger-type stirring paddle.

[0040] Reference Figure 3 , Figure 4 and Figure 5 The spiral directions of the two spiral blades on the main stirring paddle 2 are opposite, and the spiral directions of the two spiral blades on the auxiliary stirring paddle 3 are opposite.

[0041] When the main stirring paddle 2 and the auxiliary stirring paddle 3 are combined to form an auger-type stirring paddle and push the powder material, the powder material inside the mixing tank 11 will converge from both ends toward the center, to a certain extent preventing the powder material from spilling from the inner corners of the mixing tank 11, further reducing the difficulty of collecting the powder material.

[0042] Reference Figure 3 and Figure 6 The center of the circular arc groove 21 is located on the central axis of the main stirring paddle 2, and the central angle of the circular arc groove 21 is equal to ninety degrees.

[0043] When the main stirring paddle 2 and the auxiliary stirring paddle 3 are in a separated state, the blades of both can be evenly distributed inside the mixing tank 11, thereby improving the mixing effect of the powder material.

[0044] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 Both ends of the arc groove 21 are provided with rubber hoop sleeves 4 matching the linkage shaft 31 .

[0045] When the rotating source 12 stops and switches between forward and reverse rotations, the linkage shaft 31 is transferred from one end of the circular arc groove 21 to the other end due to inertia. Under the elastic damping action of the rubber hoop 4, the collision strength between the linkage shaft 31 and the circular arc groove 21 can be buffered and weakened to prevent the linkage shaft 31 from being damaged.

[0046] In addition, the collision strength between the linkage shaft 31 and the arc groove 21 will still be retained to a certain extent after being weakened, and when the collision vibration is transmitted to the main stirring paddle 2 and the auxiliary stirring paddle 3, the powder material attached to the surface of both is likely to be shaken off, further reducing the burden of subsequent cleaning work.

[0047] Reference Figure 1 A driving source 13 is provided on the frame 1 for driving the mixing tank 11 to flip.

[0048] After the powder material mixing work is completed, the driving source 13 is operated to drive the mixing tank 11 to automatically flip over and then the material unloading work can be carried out.

[0049] Reference Figure 5 , Figure 7 and Figure 8 A silicone scraper 5 is arranged in the interlayer of the spiral blade of the auxiliary stirring paddle 3 , and a convex ridge 51 for squeezing the silicone scraper 5 is arranged at the outer edge of the spiral blade of the main stirring paddle 2 .

[0050] After the main stirring paddle 2 and the auxiliary stirring paddle 3 are combined, the ridge 51 can squeeze the silicone scraper 5, causing the silicone scraper 5 to deform and extend from the outer edge of the spiral blade of the auxiliary stirring paddle 3, thereby allowing the silicone scraper 5 to scrape off the powder material attached to the inner wall of the mixing tank 11 during the feeding process.

[0051] Reference Figure 1 and Figure 2 A material shaking assembly 6 is provided inside the mixing tank 11 for shaking the powder material during the feeding process.

[0052] Reference Figure 1 , Figure 2 , Figure 8 , Fig. 9 and Fig.10 The material shaking assembly 6 includes two pressure bars 61, two supporting plates 62, two first chutes 63, two second chutes 64 and two hydraulic pipes 65. The two first chutes 63 and the two second chutes 64 are both provided on the inner wall of the mixing tank 11. The pressure bars 61 slidably connected inside each first chute 63 can abut against the silicone scraper 5. The supporting plates 62 are slidably connected inside each second chute 64. The two pressure bars 61 and the two supporting plates 62 correspond to each other one by one, and the first chutes 63 where each pressure bar 61 is located are connected to the second chutes 64 where the corresponding supporting plates 62 are located through hydraulic pipes 65.

[0053] After the mixing trough 11 is turned over, the pressure bar 61 should be at the top and the supporting plate 62 should be at the bottom. As the scraping work of the silicone scraper 5 continues, the pressure bar 61 will be retracted into the first slide groove 63 when pushed by the silicone scraper 5. At this time, the supporting plate 62 corresponding to the pressure bar 61 will extend out of the second slide groove 64 under the action of the hydraulic pipe 65; on the contrary, when the pressure bar 61 is not pushed by the silicone scraper 5, it will extend out of the first slide groove 63 due to its own gravity, and the corresponding supporting plate 62 will retract into the second slide groove 64 under the action of its own gravity. The powder material is shaken by the alternating lifting and lowering of the two supporting plates 62, thereby increasing the falling speed of the powder material.

[0054] The implementation principle of a powder material mixing device in the embodiment of the present application is:

[0055] When the rotation source 12 drives the main stirring paddle 2 to rotate forwardly, since the linkage shaft 31 abuts against one end of the arc groove 21, the auxiliary stirring paddle 3 can rotate along with the main stirring paddle 2 to perform the stirring and mixing work of the powder material.

[0056] After the mixing work is completed, the rotation source 12 is paused. When the mixing tank 11 is turned over for unloading, the rotation source 12 drives the main stirring paddle 2 to reverse. At this time, the auxiliary stirring paddle 3 is in a stationary state, and the linkage shaft 31 will be relatively displaced inside the arc groove 21 to cause the main stirring paddle 2 and the auxiliary stirring paddle 3 to rotate relative to each other until the linkage shaft 31 abuts against the other end of the arc groove 21 and the main stirring paddle 2 and the auxiliary stirring paddle 3 are combined into two-stage auger-type stirring paddles. Then, the auxiliary stirring paddle 3 will reverse with the main stirring paddle 2, and the powder material inside the mixing tank 11 will be pushed by the auger-type stirring paddle and will be gathered from both ends of the mixing tank 11 toward the center and discharged in an orderly manner, thereby avoiding the powder material from spilling from the inner edges and corners of the mixing tank 11 to a certain extent, further reducing the difficulty of collecting the powder material.

[0057] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A powder material mixing device, comprising a frame and a mixing tank rotatably connected thereto, characterized in that: Also includes: A main stirring paddle rotatably connected to the inside of the mixing tank, a rotating source for driving the main stirring paddle to rotate is arranged on the frame, an auxiliary stirring paddle colinear with its own central axis is sleeved on the main shaft of the main stirring paddle, the blades of the main stirring paddle and the auxiliary stirring paddle are two sections of spiral blades independent of each other, and the inner edge of the spiral blade of the auxiliary stirring paddle is consistent with the outer edge of the spiral blade of the main stirring paddle, a linkage shaft is penetrated at the eccentric part of the main shaft of the auxiliary stirring paddle, an arc groove for the linkage shaft to pass through is opened on the main shaft of the main stirring paddle, and the linkage shaft can slide relatively inside the arc groove along the trajectory of the arc groove; When the rotation source drives the main stirring paddle to rotate forward, the linkage shaft abuts one end of the arc groove, and the auxiliary stirring paddle can rotate along with the main stirring paddle. During material unloading, the rotation source drives the main stirring paddle to reverse, and the linkage shaft will make relative displacement inside the arc groove to make the main stirring paddle and the auxiliary stirring paddle rotate relative to each other until the linkage shaft abuts the other end of the arc groove and the main stirring paddle and the auxiliary stirring paddle are combined into two-stage auger-type stirring paddles.

2. A powder material mixing device according to claim 1, characterized in that: The spiral directions of the two sections of spiral blades on the main stirring paddle are opposite, and the spiral directions of the two sections of spiral blades on the auxiliary stirring paddle are opposite.

3. A powder material mixing device according to claim 1, characterized in that: The center of the circular arc groove is located on the central axis of the main stirring paddle, and the central angle of the circular arc groove is equal to ninety degrees.

4. A powder material mixing device according to claim 1, characterized in that: Both ends of the circular arc groove are provided with rubber hoop sleeves matching the linkage shaft.

5. A powder material mixing device according to claim 1, characterized in that: The frame is provided with a driving source for driving the mixing tank to flip.

6. A powder material mixing device according to claim 1, characterized in that: A silicone scraper is arranged in the spiral blade interlayer of the auxiliary stirring paddle, and a ridge for squeezing the silicone scraper is arranged at the outer edge of the spiral blade of the main stirring paddle, so that the silicone scraper is deformed and extends out from the outer edge of the spiral blade of the auxiliary stirring paddle.

7. A powder material mixing device according to claim 6, characterized in that: A material shaking assembly is arranged inside the mixing tank to shake the powder material during the feeding process.

8. A powder material mixing device according to claim 7, characterized in that: The material shaking assembly includes two pressure bars and two supporting plates slidably connected to the inner wall of the mixing tank. The pressure bars can abut against the silicone scraper so that the pressure bars are pushed and retracted into the first slide groove, and the first slide groove where the pressure bars are located is connected to the second slide groove where the supporting plates are located through a hydraulic pipeline.

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