Sand mill for coarse crushing

Abstract

The utility model relates to the technical field of sand mills, in particular to a sand mill for coarse crushing. Comprising a barrel assembly, a feeding assembly, a separating and discharging assembly and a grinding assembly, and further comprises a material suction assembly, the material suction assembly comprises a dispersing disc, a shearing rotor and a shearing stator, the material suction assembly is installed on one side of the feeding assembly, and the feeding assembly comprises a powder inlet, a liquid inlet and a Laval spray pipe; and a separating screen and a bead shifting wheel are arranged on one side of the separating and discharging assembly in the inner cavity of the barrel assembly. Conveying, premixing and grinding of materials can be combined through the sand mill, the process is optimized, the process route is shortened, and the premixing section is reduced. The conveying and premixing section and the rough grinding section are combined into a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of sand mills, and specifically relates to a sand mill for coarse crushing. Background Technique

[0002] Before the fine grinding of materials, it generally includes powder feeding, premixing, coarse grinding and other processes. Powder feeding process: generally includes a feeding station, a buffer bin, a metering bin, a mechanical or pneumatic conveying device. The main purpose is to accurately prepare the materials in advance according to the requirements of the formula process, and quickly send the materials to the next process to meet the production rhythm; Premixing process: generally includes a premixing kettle, a filter, a conveying pump or a shear pump, etc. The main purpose is to disperse and mix solvents, additives, powders, etc. into a uniform suspension. The so-called uniform suspension means that during the stirring state and the flowing process, there will be no solid-liquid stratification and powder precipitation in the materials. Coarse grinding process: generally includes a coarse grinding sand mill or a ball mill, a coarse grinding tank, a filter, a conveying pump, etc. The main purpose is to grind the pre-mixed qualified materials to the particle size required by the process. The dispersion system of the materials after the coarse grinding process is stable, and the particle size reaches the required particle size of the process, and flows into the fine grinding process without blocking the fine grinding sand mill.

[0003] In the existing process, the transportation, premixing and grinding of materials require different processes, the processes are relatively complex, and more equipment is required. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In order to solve the above problems of the existing technology, the utility model provides a sand mill for coarse crushing, which can combine the transportation, premixing and grinding of materials through the sand mill, optimize the process, shorten the process route, and reduce the premixing process. The transportation and premixing process and the coarse grinding process are combined into one.

[0006] (2) Technical Solutions

[0007] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0008] A sand mill for coarse crushing includes a cylinder body assembly, a feeding assembly, a separating and discharging assembly and a grinding assembly, and further includes a material suction assembly. The material suction assembly includes a dispersion disc, a shear rotor and a shear stator. The material suction assembly is installed on one side of the feeding assembly. The feeding assembly includes a powder inlet, a liquid inlet and a Laval nozzle. A separating screen and a bead wheel are further arranged on one side of the inner cavity of the cylinder body assembly and located at the separating and discharging assembly. It can combine the transportation, premixing and grinding of materials through the sand mill, optimize the process, shorten the process route, and reduce the premixing process. The transportation and premixing process and the coarse grinding process are combined into one.

[0009] Preferably, the separation and discharging assembly includes a dynamic and static ring group and a discharging port.

[0010] Preferably, the shearing rotor includes a wheel disc and blades, and a plurality of the blades are circumferentially distributed in a double layer on one side of the wheel disc.

[0011] (III) Advantageous Effects

[0012] The utility model provides a sand mill for coarse crushing, which has the following advantageous effects:

[0013] (1) The structure of the sand mill is upgraded, and the internal grinding assembly + separation and discharging assembly is upgraded to a dispersion disc + shearing rotor and shearing stator + bead wheel + separation and discharging part group structure. In addition to the grinding function, the sand mill has the functions of powder absorption and liquid absorption. Difficult-to-process particles and liquids flow into the sand mill together. The materials are first crushed and wetted and then enter the transfer kettle.

[0014] (2) The process is optimized, the process route is shortened, and the premixing section is reduced. The premixing section and the coarse grinding section are combined into one. Description of the Drawings

[0015] Figure 1 is a structural diagram of a traditional grinding machine;

[0016] Figure 2 is a structural diagram of the utility model;

[0017] Figure 3 is a structural diagram of the dispersion disc of the utility model;

[0018] Figure 4 is a structural diagram of the shearing rotor of the utility model;

[0019] Figure 5 is a structural diagram of the shearing stator of the utility model.

[0020] In the figure: 1, cylinder body assembly; 2, feeding assembly; 3, separation and discharging assembly; 4, grinding assembly; 5, material suction assembly; 501, dispersion disc; 502, shearing rotor; 503, shearing stator; 201, powder inlet; 202, liquid inlet; 203, Laval nozzle; 6, separation screen; 7, bead wheel; 301, dynamic and static ring group; 302, discharging port; 5021, wheel disc; 5022, blade. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1-5 shown, the sand mill for coarse crushing in this embodiment includes a cylinder assembly 1, a feeding assembly 2, a separating and discharging assembly 3, and a grinding assembly 4. It further includes a material suction assembly 5. The material suction assembly 5 includes a dispersion disk 501, a shear rotor 502, and a shear stator 503. The shear rotor 502 and the shear stator 503 act like a centrifugal pump and can suck in liquid and materials. The material suction assembly 5 is installed on one side of the feeding assembly 2. The feeding assembly 2 includes a powder inlet 201, a liquid inlet 202, and a Laval nozzle 203. The use of the Laval nozzle 203 increases the inflow speed during the suction of liquid and materials. A separating screen 6 and a bead wheel 7 are also provided on one side of the inner cavity of the cylinder assembly 1 where the separating and discharging assembly 3 is located.

[0023] Further, the separating and discharging assembly 3 includes a dynamic and static ring group 301 and a discharge port 302.

[0024] Further, the shear rotor 502 includes a disk 5021 and blades 5022. The blades 5022 are circumferentially distributed in a double layer on one side of the disk 5021 and there are multiple of them.

[0025] Working principle: During the grinding process of the grinding assembly 4, the shear rotor 502 is driven simultaneously. The shear rotor 502 and the shear stator 503 act like a centrifugal pump and can suck in the materials and liquid on one side of the feeding assembly 2. The materials and liquid pass through the Laval nozzle 203 and then are dispersed and mixed by the dispersion disk 501.

Claims

1. A sand mill for coarse crushing, comprising a barrel assembly (1), a feed assembly (2), a separation and discharge assembly (3) and a grinding assembly (4), characterized in that: The invention also comprises a suction assembly (5), wherein the suction assembly (5) comprises a dispersion disk (501), a shearing rotor (502) and a shearing stator (503), and the suction assembly (5) is installed on one side of the feed assembly (2), and the feed assembly (2) comprises a powder inlet (201), a liquid inlet (202) and a Laval nozzle (203). The inner cavity of the cylinder assembly (1) is located on one side of the separation and discharge assembly (3) and is also provided with a separation screen (6) and a bead wheel (7).

2. A sand mill for coarse crushing according to claim 1, characterized in that: The separation and discharging assembly (3) comprises a dynamic and static ring assembly (301) and a discharge port (302).

3. A sand mill for coarse crushing according to claim 1, characterized in that: The shear rotor (502) comprises a wheel disc (5021) and blades (5022), wherein a plurality of blades (5022) are located on one side of the wheel disc (5021) and are distributed circumferentially in double layers.

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