Composite flame retardant raw material powder mixing device

Abstract

The utility model belongs to the technical field of powder mixing, and particularly relates to a composite flame retardant raw material powder mixing device which comprises a mixing box, a plurality of mixing shafts are rotatably connected in the mixing box, a mixing area is arranged between every two mixing shafts, the mixing box is provided with a descending cavity opposite to the mixing areas, and the descending cavity is provided with a plurality of through holes. A descending feeding assembly is arranged in the descending cavity, the descending feeding assembly comprises a rotary feeding disc and a closed arc stop lever, and the rotary feeding disc is rotationally connected with the mixing box; according to the feeding device, the closed arc stop lever moves towards the interior of the mixing box under the action of the gravity block, and the closed arc stop lever is stably rotated and opened in the mixing box, so that raw materials in the feeding cavity are located in a base material or mixed raw materials at a low height, and the closed arc stop lever is rotated out of the descending cavity for next feeding; the diffusivity of powder put into a stirring area can be reduced, newly added raw materials can be concentrated in the area position of the mixed materials, and the mixing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder mixing, and particularly relates to a powder mixing device for composite flame retardant raw materials. Background Technique

[0002] When preparing a composite flame retardant, multiple raw materials are usually selected for mixing in order to achieve a better flame retardant effect. The mixing process needs to consider the compatibility, interaction of various raw materials and the final influence on the properties of the substrate. The mixed composite flame retardant needs to be subjected to performance tests to evaluate its flame retardant effect in the material, the influence on the material properties, etc., and it is necessary to ensure that the raw materials can be evenly dispersed in the substrate during the mixing process.

[0003] By selecting a suitable mixing method, it is ensured that various raw materials can be evenly mixed. For example, in mechanical stirring, the raw material powder is put into the mixing area for stirring and mixing. Some production demands are large, so the space of the stirring area is large. During the process of putting in the raw materials, in order to ensure the mixing efficiency, multiple feeding positions are set. Affected by the powder state, it is easy to make the powder have a large diffusivity when put into the stirring area, resulting in low feeding effects at multiple feeding positions. Summary of the Utility Model

[0004] The utility model provides a powder mixing device for composite flame retardant raw materials, which has the characteristics of being able to reduce the diffusivity of the powder put into the stirring area, facilitating the regional position of the mixed material to concentrate the newly added raw materials, and improving the mixing effect.

[0005] The utility model provides the following technical solution: A powder mixing device for composite flame retardant raw materials, including a mixing box, wherein a plurality of mixing shafts are rotatably connected in the mixing box, and there is a mixing area between every two of the mixing shafts. The mixing box is provided with a lowering cavity opposite to the mixing area, and a lowering feeding assembly is arranged in the lowering cavity. The lowering feeding assembly includes a rotating feeding disk and a closing arc-shaped stop rod. The rotating feeding disk is rotatably connected to the mixing box. The rotating feeding disk is provided with a feeding cavity. After the raw materials are stored in the feeding cavity, the rotating feeding disk rotates to make the feeding cavity opposite to the mixing area for feeding.

[0006] Wherein, a plurality of stirring rods are fixedly connected to the outer side of the mixing shaft, and the mixing shaft is driven by a motor component to operate.

[0007] Wherein, the closing arc-shaped stop rod is rotatably connected to the rotating feeding disk through a rotating shaft, and the closing arc-shaped stop rod is located outside the feeding cavity.

[0008] Wherein, a gravity block is fixedly connected to the outer side of the closing arc-shaped stop rod, and the gravity block is provided with a second guiding surface.

[0009] Among them, a first guiding surface is provided in the descending cavity, the second guiding surface is opposite to the first guiding surface, and the closing arc-shaped stop rod moves out of the mixing box.

[0010] Among them, the length of the feeding cavity corresponds to the mixing area, and the rotating feeding disk is located in the descending cavity.

[0011] The beneficial effects of the present utility model are as follows:

[0012] By providing a descending feeding assembly including a rotating feeding disk and a closing arc-shaped stop rod, when mixing the powder of the composite flame retardant, the mixed raw materials are mixed at multiple mixing area positions. When feeding, the powder can be located in the feeding cavity, and then the rotating feeding disk is controlled to rotate, so that the closing arc-shaped stop rod can move towards the inside of the mixing box. At this time, under the action of the gravity block, the closing arc-shaped stop rod can be stably rotated and opened in the mixing box, so that the raw materials inside the feeding cavity are located in the base material or the mixed raw materials at a lower height. Rotating the closing arc-shaped stop rod out of the descending cavity for the next feeding can reduce the diffusivity of the powder when it is put into the stirring area, which is beneficial to the regional position concentration of the new added raw materials in the mixture and improves the mixing effect.

[0013] Parts not involved in this device are the same as the prior art or can be implemented by using the prior art. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the mixing box in the present utility model;

[0016] Figure 3 is a structural schematic diagram of the descending cavity in the present utility model;

[0017] Figure 4 is a structural schematic diagram of the descending feeding assembly in the present utility model;

[0018] In the figure: 1. Mixing box; 11. Descending cavity; 12. First guiding surface; 2. Descending feeding assembly; 21. Rotating feeding disk; 211. Feeding cavity; 22. Closing arc-shaped stop rod; 23. Rotating shaft; 24. Gravity block; 241. Second guiding surface; 3. Mixing shaft; 31. Stirring rod; 4. Mixing area. Detailed Embodiment

[0019] Please refer to Figures 1-4, the present utility model provides the following technical solutions: It includes a mixing tank 1, and several mixing shafts 3 are rotatably connected inside the mixing tank 1. There is a mixing area 4 between every two mixing shafts 3. The mixing tank 1 is provided with a lowering cavity 11 opposite to the mixing area 4. A lowering feeding assembly 2 is arranged in the lowering cavity 11. The lowering feeding assembly 2 includes a rotating feeding disk 21 and a closing arc-shaped blocking rod 22. The rotating feeding disk 21 is rotatably connected to the mixing tank 1. The rotating feeding disk 21 is provided with a feeding cavity 211. After the raw materials are stored in the feeding cavity 211, the rotating feeding disk 21 rotates, and the feeding cavity 211 is made opposite to the mixing area 4 for feeding.

[0020] In this implementation scheme: several mixing shafts 3 are rotatably connected inside the mixing tank 1. There is a mixing area 4 between every two mixing shafts 3. By rotating the mixing shafts 3, the raw materials in the mixing area 4 are mixed. The provided lowering feeding assembly 2 includes a rotating feeding disk 21 and a closing arc-shaped blocking rod 22. When mixing the powder of the composite flame retardant, the raw materials are mixed at the positions of multiple mixing areas 4. When feeding, the powder can be placed in the feeding cavity 211, and then the rotating feeding disk 21 is controlled to rotate, so that the closing arc-shaped blocking rod 22 can move towards the inside of the mixing tank 1. At this time, under the action of the gravity block 24, the closing arc-shaped blocking rod 22 can be stably rotated and opened inside the mixing tank 1, so that the raw materials inside the feeding cavity 211 are diffused into the base material or the mixed raw materials at a lower height. The closing arc-shaped blocking rod 22 is rotated out of the lowering cavity 11 for the next feeding, which can reduce the diffusibility of the powder when it is put into the stirring area, facilitate the regional position of the mixed material to concentrate the newly added raw materials, and improve the mixing effect. When discharging the closing arc-shaped blocking rod 22, under the action of the second guiding surface 241, it can be made opposite to the first guiding surface 12, so that it is conducive to the closing of the closing arc-shaped blocking rod 22 on the rotating feeding disk 21 and ensure the stable discharge of the closing arc-shaped blocking rod 22 from the mixing tank 1.

[0021] Several stirring rods 31 are fixedly connected to the outside of the mixing shaft 3. The mixing shaft 3 is driven to operate by a motor component; the motor is started to drive the mixing shaft 3 to rotate, and the stirring rods 31 act on the raw materials to mix the raw materials in the mixing area 4.

[0022] The closing arc-shaped blocking rod 22 is rotatably connected to the rotating feeding disk 21 through a rotating shaft 23. The closing arc-shaped blocking rod 22 is located outside the feeding cavity 211; when raw materials are placed in the feeding cavity 211, it can be sealed and restricted by the closing arc-shaped blocking rod 22, and the raw materials can be discharged only when the closing arc-shaped blocking rod 22 is opened inside the mixing tank 1.

[0023] A gravity block 24 is fixedly connected to the outside of the closed arc-shaped baffle 22, and the gravity block 24 is provided with a second guiding surface 241; the rotation of the rotary feeding tray 21 is controlled so that the closed arc-shaped baffle 22 can move into the interior of the mixing tank 1. At this time, under the action of the gravity block 24, the closed arc-shaped baffle 22 can be stably rotated and opened in the mixing tank 1.

[0024] The descending cavity 11 is provided with a first guiding surface 12, and the second guiding surface 241 faces the first guiding surface 12. The closed arc-shaped baffle 22 moves out of the mixing tank 1; when the closed arc-shaped baffle 22 is discharged, under the action of the second guiding surface 241, it can be made to face the first guiding surface 12, so as to facilitate the closing of the closed arc-shaped baffle 22 on the rotary feeding tray 21.

[0025] The length of the feeding cavity 211 corresponds to the mixing area 4, and the rotary feeding tray 21 is located in the descending cavity 11; the raw materials inside the feeding cavity 211 are diffused into the base material or the mixed raw materials at a lower height. The closed arc-shaped baffle 22 is rotated out of the descending cavity 11 to perform the next feeding, which can reduce the diffusibility of the powder input into the stirring area.

[0026] The working principle and usage process of the present utility model: By rotating the mixing shaft 3, the raw materials in the mixing area 4 are mixed. The provided descending feeding assembly 2 includes a rotary feeding tray 21 and a closed arc-shaped baffle 22. When the powder of the composite flame retardant is mixed, the mixed raw materials are mixed at multiple positions of the mixing area 4. When feeding, the powder can be located in the feeding cavity 211, and then the rotation of the rotary feeding tray 21 is controlled so that the closed arc-shaped baffle 22 can move into the interior of the mixing tank 1. At this time, under the action of the gravity block 24, the closed arc-shaped baffle 22 can be stably rotated and opened in the mixing tank 1, so as to diffuse the raw materials inside the feeding cavity 211 into the base material or the mixed raw materials at a lower height. The closed arc-shaped baffle 22 is rotated out of the descending cavity 11 to perform the next feeding, which can reduce the diffusibility of the powder input into the stirring area, facilitate the regional position of the mixed material to concentrate the newly added raw materials, and improve the mixing effect. When the closed arc-shaped baffle 22 is discharged, under the action of the second guiding surface 241, it can be made to face the first guiding surface 12, so as to facilitate the closing of the closed arc-shaped baffle 22 on the rotary feeding tray 21 and ensure the stable discharge of the closed arc-shaped baffle 22 from the mixing tank 1.

Claims

1. A composite flame retardant raw material powder mixing device, comprising a mixing box (1), wherein a plurality of mixing shafts (3) are rotatably connected in the mixing box (1), characterized in that: There is a mixing zone (4) between every two mixing shafts (3); the mixing box (1) is provided with a lowering cavity (11) opposite to the mixing zone (4); a lowering feeding assembly (2) is provided in the lowering cavity (11); the lowering feeding assembly (2) comprises a rotating feeding disc (21) and a closed arc blocking rod (22); the rotating feeding disc (21) is rotatably connected to the mixing box (1); the rotating feeding disc (21) is provided with a feeding cavity (211); raw materials are stored in the feeding cavity (211) and then rotated by the rotating feeding disc (21), so that the feeding cavity (211) and the mixing zone (4) are fed relative to each other.

2. A composite flame retardant raw material powder mixing device according to claim 1, characterized in that: A plurality of stirring rods (31) are fixedly connected to the outside of the mixing shaft (3), and the mixing shaft (3) is driven by a motor.

3. The composite flame retardant raw material powder mixing device according to claim 1, characterized in that: The closed circular arc blocking rod (22) is rotatably connected to the rotating feeding disc (21) via a rotating shaft (23), and the closed circular arc blocking rod (22) is located outside the feeding chamber (211).

4. The composite flame retardant raw material powder mixing device according to claim 1, characterized in that: A gravity block (24) is fixedly connected to the outer side of the closed arc blocking rod (22), and the gravity block (24) is provided with a second guide surface (241).

5. A composite flame retardant raw material powder mixing device according to claim 4, characterized in that: The lowering cavity (11) is provided with a first guide surface (12), the second guide surface (241) is opposite to the first guide surface (12), and the closed arc blocking rod (22) moves out of the mixing box (1).

6. The composite flame retardant raw material powder mixing device according to claim 1, characterized in that: The length of the feeding chamber (211) corresponds to the mixing zone (4), and the rotating feeding disc (21) is located in the lowering chamber (11).

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