Stepped feeding and mixing device

Abstract

The utility model discloses a stepped feeding and mixing device, which relates to the field of inorganic powder slurry production equipment, and comprises a stock bin, a plurality of conical surge bins with communicated chambers are sequentially arranged in the stock bin from top to bottom, a three-branch-port circulating pump is arranged at a discharge port in the center of the bottom of each conical surge bin, and the three-branch-port circulating pump is communicated with the conical surge bins. A material feeding port is formed in the side wall of each conical buffering bin, a material bin discharging port is formed in the bottom of each material bin, and materials dispersed and mixed through the material bins are conveyed to grinding equipment through the material bin discharging ports. The storage bin provided by the utility model is internally provided with the plurality of conical buffer bins of which the bin chambers are communicated in sequence, and the side wall of each conical buffer bin is provided with the material feeding hole, so that various assistants can be added into inorganic powder slurry one by one for dispersion; the phenomena of slurry thickening and additive caking caused by simultaneous addition of multiple additives into the inorganic powder slurry are avoided.

Description

Technical Field

[0001] The utility model relates to the field of inorganic powder slurry production equipment, in particular to a stepped feeding and mixing device. Background Art

[0002] There are various types of inorganic powders. Common inorganic powders include calcium carbonate, talcum powder, kaolin, etc., and are widely used in various industries. The main existing production process of inorganic powders is the mineral processing method, which is mainly divided into dry grinding and wet grinding. Among them, in wet grinding, water is used as the medium, and the powder is ground and modified with the assistance of various additives. It is mostly used for the production of ultra-fine powders. When selecting grinding dispersants and modifiers, some manufacturers will choose to use a variety of additives in combination to improve production efficiency. However, the addition method of additives during the production process will affect the work efficiency. If the addition order of additives is incorrect, the effect may not be demonstrated. For example, some manufacturers have found that during the production process of grinding and modifying inorganic powder slurries, when the addition order of additives is incorrect or multiple additives are added simultaneously, phenomena such as slurry thickening and additive caking will occur. The occurrence of this phenomenon will lead to a decrease in production efficiency at the least and the scrapping of materials at the worst, causing huge losses to the enterprise.

[0003] Therefore, how to provide an inorganic powder slurry grinding and modifying device suitable for the sequential feeding of multiple materials to solve the problems of slurry thickening and additive caking caused by incorrect additive addition order or simultaneous addition of multiple additives has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The purpose of the utility model is to provide a stepped feeding and mixing device to solve the problems of slurry thickening and additive caking caused by incorrect additive addition order or simultaneous addition of multiple additives during the production process of inorganic powder slurries.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A stepped feeding and mixing device of the utility model includes a feed bin. Inside the feed bin, a conical buffer bin with multiple interconnected chambers is arranged from top to bottom in sequence. At the discharge port at the center of the bottom of each conical buffer bin, a three-way circulation pump is arranged. On the side wall of each conical buffer bin, a material feed port is arranged. At the bottom of the feed bin, a feed bin discharge port is arranged. The material after being dispersed and mixed in the feed bin is transported to the grinding equipment through the feed bin discharge port.

[0007] Preferably, a horizontal feeding branch port, a horizontal discharging branch port and a vertical discharging branch port are provided on the three-way circulating pump, and automatic valves are provided on the three branch ports of the three-way circulating pump. The horizontal feeding branch port and the horizontal discharging branch port are located inside the conical buffer bin where the body of the three-way circulating pump is located. The vertical discharging branch port is communicated with the discharging port at the bottom center of the conical buffer bin where the body of the three-way circulating pump is located.

[0008] Preferably, a guiding plate is provided at the discharging port of the conical buffer bin.

[0009] Preferably, three conical buffer bins are sequentially arranged from top to bottom. An inorganic powder slurry feeding port and a first auxiliary agent feeding port are respectively provided on the side wall of the top conical buffer bin; a second auxiliary agent feeding port is provided on the side wall of the middle conical buffer bin, and a third auxiliary agent feeding port is provided on the side wall of the bottom conical buffer bin.

[0010] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0011] 1) A conical buffer bin with multiple sequentially connected chambers is provided in the silo, and a material feeding port is provided on the side wall of each conical buffer bin, which can realize the sequential addition of multiple auxiliary agents to the inorganic powder slurry for dispersion, and avoid the phenomena of slurry thickening and auxiliary agent caking caused by the simultaneous addition of multiple auxiliary agents to the inorganic powder slurry.

[0012] 2) A three-way circulating pump is provided at the discharging port at the bottom center of each conical buffer bin. Among them, the three-way circulating pump can achieve the effect of circulating and dispersing the slurry and auxiliary agents, and can also control the dispersion time and the time for pumping the dispersed material into the next chamber. The entire circulation process and pumping process are realized in a closed silo, making the production process highly safe and effectively avoiding external environmental pollution. Description of the Drawings

[0013] The present utility model will be further described below with reference to the drawings.

[0014] Figure 1 It is a schematic structural diagram of the stepped feeding and mixing device of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the three-way circulating pump of the present utility model.

[0016] Description of the reference numerals: 1, silo; 2, conical buffer bin; 3, three-way circulating pump; 4, silo discharging port; 5, guiding plate; 6, inorganic powder slurry feeding port; 7, first auxiliary agent feeding port; 8, second auxiliary agent feeding port; 9, third auxiliary agent feeding port; 31, horizontal feeding branch port; 32, horizontal discharging branch port; 33, vertical discharging branch port. Detailed implementation mode

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] As Figure 1-2 shown, a stepped feeding and mixing device includes a feed bin 1. Inside the feed bin 1, a conical buffer bin 2 with multiple interconnected chambers is arranged from top to bottom in sequence. At the discharge port at the center of the bottom of each conical buffer bin 2, a three-port circulation pump 3 is arranged. On the side wall of each conical buffer bin 2, a material feed port is provided. At the bottom of the feed bin 1, a feed bin discharge port 4 is provided. The material after being dispersed and mixed in the feed bin 1 is transported to the grinding equipment through the feed bin discharge port 4.

[0019] Specifically, on the three-port circulation pump 3, a horizontal feed port 31, a horizontal discharge port 32 and a vertical discharge port 33 are provided, and automatic valves are arranged on the three ports of the three-port circulation pump 3. The horizontal feed port 31 and the horizontal discharge port 32 are located inside the conical buffer bin 2 where the body of the three-port circulation pump 3 is located. The vertical discharge port 33 is communicated with the discharge port at the center of the bottom of the conical buffer bin 2 where the body of the three-port circulation pump 3 is located.

[0020] Specifically, a guide plate 5 is arranged at the discharge port of the conical buffer bin 2.

[0021] Specifically, three conical buffer bins 2 are arranged from top to bottom in sequence. On the side walls of the top conical buffer bin 2, an inorganic powder slurry feed port 6 and a first additive feed port 7 are respectively provided; on the side wall of the middle conical buffer bin 2, a second additive feed port 8 is provided, and on the side wall of the bottom conical buffer bin 2, a third additive feed port 9 is provided.

[0022] The using process of the present utility model is as follows:

[0023] First, the inorganic powder slurry is fed into the conical buffer bin 2 at the top through the inorganic powder slurry inlet 6. At the same time, the first additive is fed into the conical buffer bin 2 at the top through the first additive inlet 7. The circulation mode of the three-port circulation pump 3 in the conical buffer bin 2 at the top is turned on. Under the action of the motor, the inorganic powder slurry and the first additive enter the three-port circulation pump 3 from the horizontal feed port 31 and are circulated into the chamber of the conical buffer bin 2 at the top from the horizontal discharge port 32. After the inorganic powder slurry and the first additive are circulated by the three-port circulation pump 3, the first dispersant is obtained. Then, the discharging mode of the three-port circulation pump 2 is turned on. The first dispersant enters the three-port circulation pump 3 from the horizontal feed port 31 and enters the chamber of the conical buffer bin 2 in the middle from the vertical discharge port 32;

[0024] Secondly, the second additive is fed into the chamber of the conical buffer bin 2 in the middle through the second additive inlet 8. The first dispersant and the second additive are circulated and dispersed by the three-port circulation pump in the conical buffer bin 2 in the middle to obtain the second dispersant. Then, the second dispersant is discharged into the chamber of the conical buffer bin 2 at the bottom by using the three-port circulation pump 3;

[0025] Finally, the third additive is fed into the chamber of the conical buffer bin 2 at the bottom through the third additive inlet 9. The second dispersant and the third additive are circulated and dispersed by the three-port circulation pump 3 in the conical buffer bin 2 at the bottom to obtain the third dispersant. Then, the third dispersant is pumped into the silo 1 by using the three-port circulation pump 3 in the conical buffer bin 2 at the bottom. The third dispersant is fed into the grinding equipment through the silo discharge port 4.

[0026] When the dispersant is pumped into the chamber of the conical buffer bin 2 in the next layer by the three-port circulation pump 3, it will be buffered by the guide plate 5 to improve the smoothness of the flow and reduce the occurrence of splashing problems.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0028] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A step-type feeding and mixing device, characterized in that: The invention comprises a silo (1), wherein a plurality of conical buffer silos (2) with interconnected chambers are arranged in sequence from top to bottom inside the silo (1), a three-branch circulation pump (3) is arranged at the discharge port at the bottom center of each conical buffer silo (2), a material feed port is arranged on the side wall of each conical buffer silo (2), a silo discharge port (4) is arranged at the bottom of the silo (1), and the material dispersed and mixed in the silo (1) is transported to the grinding equipment through the silo discharge port (4).

2. The step-type feeding and mixing device according to claim 1 is characterized in that: The three-branch-outlet circulation pump (3) is provided with a horizontal feed branch (31), a horizontal discharge branch (32) and a vertical discharge branch (33), and the three branches of the three-branch-outlet circulation pump (3) are all provided with automatic valves, the horizontal feed branch (31) and the horizontal discharge branch (32) are located inside the conical buffer bin (2) where the body of the three-branch-outlet circulation pump (3) is located, and the vertical discharge branch (33) is connected to the discharge port at the bottom center of the conical buffer bin (2) where the body of the three-branch-outlet circulation pump (3) is located.

3. The step-type feeding and mixing device according to claim 1 is characterized in that: A material guide plate (5) is provided at the material outlet of the conical buffer bin (2).

4. The step-type feeding and mixing device according to claim 1 is characterized in that: The conical buffer bins (2) are provided with three in sequence from top to bottom. The side walls of the top conical buffer bin (2) are provided with an inorganic powder slurry feed port (6) and a first auxiliary agent feed port (7), respectively; the side wall of the middle conical buffer bin (2) is provided with a second auxiliary agent feed port (8), and the side wall of the bottom conical buffer bin (2) is provided with a third auxiliary agent feed port (9).

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