Raw material uniform mixing device

Abstract

The utility model relates to the technical field of catalyst raw material mixing, in particular to a raw material uniform mixing device. The raw material uniform mixing device comprises a rolling screen, the rolling screen is connected with a first-stage mixing tank through a premixing tank, the first-stage mixing tank is connected with a second-stage mixing tank through an inclined screening pipeline, the inclined screening pipeline is connected with the second-stage mixing tank through a crusher, and a guide hopper is arranged in the first-stage mixing tank. According to the device, through the arrangement of the premixing tank and the hemispherical disperser, auxiliary materials and part of main materials are premixed in advance and then enter the primary mixing tank to be mixed with the other main materials, and the auxiliary materials and the part of main materials collide and are dispersed at the hemispherical disperser, so that the auxiliary materials and the part of main materials are mixed to a certain extent when not reaching a stirring paddle of the primary mixing tank; the problem of non-uniform mixing of the auxiliary materials is avoided, and the mixing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst raw material mixing, in particular to a raw material uniform mixing device. Background Art

[0002] Supported catalysts are a type of catalyst in which the catalytic active components are dispersed or supported on a specific carrier. The main advantages of this type of catalyst are its high activity, high selectivity and good thermal stability. Since the active components are dispersed on the carrier, this increases the surface area of ​​the catalyst, thereby improving the reaction efficiency. In addition, the physical and chemical properties of the carrier can be adjusted to adapt to different reaction conditions and enhance the stability and durability of the catalyst.

[0003] In the actual production process, the raw materials of the catalyst are all powders. In the existing device, multiple powders are directly added to the same mixing tank for stirring and mixing. However, due to the different addition amounts of each material, especially the main material and the auxiliary material, the mass difference is nearly 5 times. This leads to the problem of uneven mixing of the auxiliary materials when added and mixed at the same time, which seriously affects the product quality. In addition, due to the small particle size of the powder, agglomeration sometimes occurs. The existing solution is: the mixture is directly fed into the pulverizer for further processing, which seriously reduces the overall production efficiency. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a raw material uniform mixing device, which premixes the auxiliary material with part of the main material through the arrangement of a premixing tank and a hemispherical disperser, and then enters a primary mixing tank to be mixed with the remaining main material. The two collide and disperse at the hemispherical disperser, so that the two are mixed to a certain extent before reaching the stirring paddle of the primary mixing tank, thereby avoiding the problem of uneven mixing of the auxiliary materials and improving the mixing efficiency; through the coordinated use of an inclined screening pipe, a crusher and a secondary mixing tank, the agglomerates in the mixture are screened and crushed separately, and then enter the secondary mixing tank to be mixed with the remaining raw materials, thereby reducing the working time of the crusher and greatly improving the production efficiency.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The raw material uniform mixing device comprises a rolling screen, which is connected to a primary mixing tank through a premixing tank, which is connected to a secondary mixing tank through an inclined screening pipeline, which is connected to the secondary mixing tank through a crusher, and a guide hopper is arranged inside the primary mixing tank.

[0007] A temperature control jacket is installed outside the primary mixing tank, which is connected to the temperature control jacket outside the premixing tank through a pipeline. There is a mesh structure below the inclined screening pipeline. When the powder falls through the inclined screening pipeline, the powder passes through the mesh structure by gravity and enters the powder collector, and the agglomerates enter the crusher by gravity.

[0008] The interior of the premixing tank is provided with a premixing tank stirring paddle, the premixing tank is connected with a main material inlet pipeline, and the outer side of the premixing tank is provided with a temperature control jacket.

[0009] A stirring paddle of the first-stage mixing tank driven by a driving motor is arranged inside the first-stage mixing tank, and a stirring shaft is connected between the driving motor and the stirring paddle of the first-stage mixing tank.

[0010] The stirring shaft is provided with a hemispherical disperser, and the hemispherical disperser is located below the material guide hopper.

[0011] The raw materials slide down to the hemispherical disperser through the guide hopper by gravity, and then dispersed into the first-level mixing tank, which increases the mixing uniformity of the raw materials and reduces the impact of the powder on the stirring device.

[0012] The first-stage mixing tank is provided with a mixture inlet and a main material inlet. The premixing tank is connected to the mixture inlet through a pipeline, and the main material inlet pipeline is connected to the main material inlet through a first-stage mixing tank pipeline.

[0013] The upper part of the primary mixing tank is connected to the vacuum pump through a dust collector, and a powder collector is arranged between the inclined screening pipeline and the secondary mixing tank.

[0014] The working principle of the utility model is:

[0015] After the catalyst powder auxiliary material is screened by the rolling screen, it enters the premixing tank. The catalyst main material enters the premixing tank through the main material inlet pipe. The stirring paddle of the premixing tank starts to work. After the premixing is completed, it enters the primary mixing tank through the mixed material inlet; the remaining main material enters the primary mixing tank through the main material inlet. After that, each raw material slides down to the hemispherical disperser through the guide hopper and is dispersed into the first-level mixing tank. The stirring paddle of the first-level mixing tank starts to work; after that, the mixed material in the first-level mixing tank is screened by the inclined screening pipeline, and the powder enters the secondary mixing tank through the powder collector. The agglomerates are processed by the crusher and enter the secondary mixing tank. Among them, a temperature control sleeve is provided on the outside of the first-level mixing tank, which is connected to the temperature control sleeve on the outside of the premixing tank through a pipeline. There is a mesh structure below the inclined screening pipeline. When the powder falls through the inclined screening pipeline, the powder passes through the mesh structure by gravity and enters the powder collector. The agglomerates enter the crusher by gravity.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By adopting the raw material uniform mixing device of the utility model, the auxiliary material is premixed with part of the main material in advance through the arrangement of the premixing tank and the hemispherical disperser, and then the auxiliary material enters the primary mixing tank to be mixed with the remaining main material. The two materials collide and disperse at the hemispherical disperser, so that the two materials are mixed to a certain extent before reaching the stirring paddle of the primary mixing tank, thereby avoiding the problem of uneven mixing of the auxiliary materials and improving the mixing efficiency; through the coordinated use of the inclined screening pipeline, the crusher and the secondary mixing tank, the agglomerates in the mixture are screened and crushed separately, and then enter the secondary mixing tank to be mixed with the remaining raw materials, thereby reducing the working time of the crusher and greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the raw material uniform mixing device of the utility model;

[0019] In the figure: 1. rolling screen; 2. premixing tank; 3. primary mixing tank; 4. crusher; 5. secondary mixing tank; 6. inclined screening pipeline; 7. premixing tank stirring paddle; 8. main material inlet pipeline; 9. inlet pipeline of primary mixing tank; 10. driving motor; 11. stirring shaft; 12. hemispherical disperser; 13. mixed material inlet; 14. main material inlet; 15. primary mixing tank stirring paddle; 16. vacuum pump; 17. dust collector; 18. guide hopper; 19. powder collector. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figure 1As shown, the raw material uniform mixing device includes a rolling screen 1, which is connected to a primary mixing tank 3 through a premixing tank 2, and the primary mixing tank 3 is connected to a secondary mixing tank 5 through an inclined screening pipeline 6, and the inclined screening pipeline 6 is connected to the secondary mixing tank 5 through a crusher 4, and a guide hopper 18 is provided inside the primary mixing tank 3. Below the inclined screening pipeline 6 is a mesh structure. When the powder falls through the inclined screening pipeline, the powder passes through the mesh structure by gravity and enters the powder collector 19, and the agglomerates enter the crusher 4 by gravity. A premixing tank stirring paddle 7 is provided inside the premixing tank 2, and a main material inlet pipeline 8 is connected to the premixing tank 2. A temperature control sleeve is provided on the outside of the premixing tank 2. A primary mixing tank stirring paddle 15 driven by a drive motor 10 is provided inside the primary mixing tank 3, and a stirring shaft 11 is connected between the drive motor 10 and the primary mixing tank stirring paddle 15. A hemispherical disperser 12 is provided on the stirring shaft 11, and the hemispherical disperser 12 is located below the guide hopper 18. The primary mixing tank 3 is provided with a mixed material inlet 13 and a main material inlet 14, the premixing tank 2 is connected to the mixed material inlet 13 through a pipeline, and the main material inlet pipeline 8 is connected to the main material inlet 14 through the primary mixing tank pipeline 9. The primary mixing tank 3 is connected to the vacuum pump 16 through a dust collector 17, and a powder collector 19 is provided between the inclined screening pipeline 6 and the secondary mixing tank 5.

[0023] The above-mentioned raw material uniform mixing device, when in operation, comprises the following steps:

[0024] (1) The catalyst powder auxiliary material is screened by the rolling screen 1 and enters the premixing tank 2. The catalyst main material enters the premixing tank 2 through the main material inlet pipe 8. The premixing tank stirring paddle 7 starts to work. After the premixing is completed, it enters the primary mixing tank 3 through the mixed material inlet port 13; (2) The remaining main material enters the primary mixing tank 3 through the main material inlet port 14. Then, each raw material slides down onto the hemispherical disperser 12 through the guide hopper 18 and is dispersed into the first mixing tank 3. The first mixing tank stirring paddle 15 starts to work; (3) After that, the mixed material in the first mixing tank 3 is screened by the inclined screening pipe 6, and the powder enters the secondary mixing tank 5 through the powder collector 19. The agglomerates are processed by the crusher 4 and enter the secondary mixing tank 5.

Claims

1. A raw material uniform mixing device, characterized in that: The invention comprises a rolling screen (1), wherein the rolling screen (1) is connected to a primary mixing tank (3) via a premixing tank (2), the primary mixing tank (3) is connected to a secondary mixing tank (5) via an inclined screening pipeline (6), the inclined screening pipeline (6) is connected to the secondary mixing tank (5) via a crusher (4), and a guide hopper (18) is provided inside the primary mixing tank (3).

2. The raw material uniform mixing device according to claim 1, characterized in that: The interior of the premixing tank (2) is provided with a premixing tank stirring paddle (7), the premixing tank (2) is connected with a main material inlet pipeline (8), and the outer side of the premixing tank (2) is provided with a temperature control jacket.

3. The raw material uniform mixing device according to claim 1, characterized in that: A first-stage mixing tank stirring paddle (15) driven by a driving motor (10) is provided inside the first-stage mixing tank (3), and a stirring shaft (11) is connected between the driving motor (10) and the first-stage mixing tank stirring paddle (15).

4. The raw material uniform mixing device according to claim 3, characterized in that: The stirring shaft (11) is provided with a hemispherical disperser (12), and the hemispherical disperser (12) is located below the guide hopper (18).

5. The raw material uniform mixing device according to claim 2, characterized in that: The primary mixing tank (3) is provided with a mixed material inlet (13) and a main material inlet (14); the premixing tank (2) is connected to the mixed material inlet (13) via a pipeline; the main material inlet pipeline (8) is connected to the main material inlet (14) via a pipeline (9) for entering the primary mixing tank.

6. The raw material uniform mixing device according to claim 1, characterized in that: The upper portion of the primary mixing tank (3) is connected to a vacuum pump (16) via a dust collector (17), and a powder collector (19) is provided between the inclined screening pipeline (6) and the secondary mixing tank (5).

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