Superfine ring roller flour mill

Abstract

The utility model relates to the technical field of flour mills, and discloses a superfine ring roller flour mill which comprises a grinding chamber, one side of the grinding chamber is connected with a storage hopper, and a classifier motor is installed in the middle of the top of the grinding chamber. A first air pipe is connected to the top of the grinding chamber and located on one side of the classifier motor and communicated with a pulse dust collector on the right side, a second air pipe is connected to the right side wall of the pulse dust collector, an air blower is connected to the lower end of the second air pipe, and a backflow air pipe is connected to the air outlet end of the air blower. And one end of the backflow air pipe communicates with the side wall of the grinding chamber, and a grader is installed at the top of the interior of the grinding chamber. The dust collection device is large in crushing ratio and high in energy utilization rate, a pulse blowing type dust removal mode is adopted, dust removal is conducted on each filter bag through compressed air, the phenomenon that the filter bags are blocked due to long-term accumulation of powder is avoided, the dust collection efficiency reaches 99.9% or above, and dust-free operation of a workshop is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding mills, in particular to an ultra-fine ring roller grinding mill. Background Art

[0002] The ultrafine ring roller mill is a new type of ultrafine grinding equipment, which has comprehensive mechanical grinding performances such as rolling, grinding and impact. It is a truly efficient and energy-saving ultrafine grinding equipment, especially suitable for deep processing of non-metallic minerals. The ultrafine ring roller mill is a new type of high-fine grinding equipment. The product fineness can be adjusted between 325 mesh and 2500 mesh according to needs, and the product fineness can reach D97<5um at one time. The mill occupies a small area, has strong complete set, wide application, simple operation, convenient maintenance, stable performance, high cost performance, and is an energy-saving high-fine powder processing equipment.

[0003] It can be used for ultra-fine grinding of various non-metallic minerals with Mohs hardness below 7 and humidity within 6%, such as limestone, talc, calcite, calcium carbonate, dolomite, potassium feldspar, bentonite, kaolin, fluorite, etc.

[0004] The existing grinding mills have a small crushing ratio and low energy utilization rate when in use. The cleaning method cannot clean each filter bag separately, which causes long-term accumulation of powder and causes clogging of the filter bags. The dust collection efficiency is low and cannot effectively ensure dust-free operation in the workshop. Secondly, the service life of the grinding roller and grinding ring is short. In addition, the base usually does not adopt an integral casting structure, which can neither ensure the structural strength nor make the shock absorption performance general. Therefore, there is an urgent need for an ultra-fine ring roller grinding mill to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide an ultrafine roller mill to solve the problems of the existing mills mentioned in the above background technology, that is, during use, the crushing ratio is small, the energy utilization rate is low, the cleaning method cannot clean each filter bag separately, so that the powder is accumulated for a long time and the filter bag is blocked, the dust collection efficiency is low, and the dust-free operation of the workshop cannot be effectively guaranteed. Secondly, the service life of the grinding roller and the grinding ring is short. In addition, the base usually does not adopt an integral casting structure, which can neither ensure the structural strength nor make the shock absorption performance general.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A superfine ring roller mill comprises a grinding chamber, one side of the grinding chamber is connected to a storage hopper, a classifier motor is installed in the middle of the top of the grinding chamber, the top of the grinding chamber and one side of the classifier motor is connected to a first air duct connected to the pulse dust collector on the right side, a second air duct is connected to the right side wall of the pulse dust collector, the lower end of the second air duct is connected to a blower, the air outlet end of the blower is connected to a return air duct, one end of the return air duct is connected to the side wall of the grinding chamber, a classifier is installed on the top of the grinding chamber, a material throwing tray is arranged inside the grinding chamber and directly below the classifier, a grinding roller is arranged directly below the material throwing tray, a grinding ring is arranged on the outside of the grinding roller, a plurality of turntables are arranged directly below the grinding roller, a belt transmission device is installed at the bottom of the lowest turntable, a drive motor is installed on the right side of the grinding chamber, the drive motor and the belt transmission device are connected through a pulley, and a main engine base is arranged at the bottom of the grinding chamber.

[0008] As a preferred technical solution of the utility model, the grinding rollers are arranged in four layers, and the four layers of grinding rollers and the multiple rotating disks are arranged alternately with each other.

[0009] As a preferred technical solution of the utility model, the output shaft of the classifier motor is connected to the classifier.

[0010] As a preferred technical solution of the utility model, the grinding ring sleeve is arranged on the outside of the grinding roller.

[0011] As a preferred technical solution of the utility model, the number of the material throwing discs is set to four, and the four rotating discs are vertically arranged at equal intervals.

[0012] As a preferred technical solution of the utility model, the pulse dust collector adopts a pulse jet cleaning method, using compressed air to clean each filter bag separately, and the grinding roller and grinding ring are made of wear-resistant steel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model has a large crushing ratio and high energy utilization rate. It adopts a pulse jet cleaning method and uses compressed air to clean each filter bag separately to prevent long-term accumulation of powder and blockage of the filter bag. The dust collection efficiency reaches more than 99.9%, effectively ensuring dust-free operation in the workshop.

[0015] The utility model grinds uniform and fine particles, and can easily adjust the finished product fineness between 5-38μm. Products with different finenesses can better meet market demand and improve corporate competitiveness. The grinding roller and grinding ring are made of wear-resistant steel, which increases their service life. The main engine base adopts an integral casting structure, which not only ensures structural strength but also has good shock absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0020] In the figure: 1. Grinding chamber; 2. Storage hopper; 3. First air duct; 4. Pulse dust collector; 5. Second air duct; 6. Blower; 7. Return air duct; 8. Classifier; 9. Main machine base; 10. Classifier motor; 11. Throwing plate; 12. Grinding ring; 13. Grinding roller; 14. Belt transmission device; 15. Driving motor; 16. Turntable. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The different types of section lines in the drawings in the embodiments of the utility model are not marked according to the national standard, nor are there any requirements for the materials of the components, but are used to distinguish the cross-sectional views of the components in the drawings.

[0022] See also Figure 1-3 A superfine ring roller mill comprises a grinding chamber 1, a storage hopper 2 is connected to one side of the grinding chamber 1, a classifier motor 10 is installed in the middle of the top of the grinding chamber 1, a first air duct 3 is connected to the top of the grinding chamber 1 and located on one side of the classifier motor 10, and is connected to the pulse dust collector 4 on the right side, a second air duct 5 is connected to the right side wall of the pulse dust collector 4, a blower 6 is connected to the lower end of the second air duct 5, and a return air duct 7 is connected to the air outlet end of the blower 6, and one end of the return air duct 7 is connected to the side wall of the grinding chamber 1, and the grinding chamber 1 is provided with a plurality of hoppers 2, wherein the hopper 2 is connected to the middle of the top of the grinding chamber 1, and the hopper 2 is connected to the middle of the top of the grinding chamber 1. A classifier 8 is installed on the top of the chamber 1, a material throwing tray 11 is installed inside the grinding chamber 1 and directly below the classifier 8, a grinding roller 13 is installed directly below the material throwing tray 11, a grinding ring 12 is installed on the outside of the grinding roller 13, and a plurality of turntables 16 are arranged directly below the grinding roller 13. A belt transmission device 14 is installed at the bottom of the lowest turntable 16, a driving motor 15 is installed on the right side of the grinding chamber 1, and the driving motor 15 is connected to the belt transmission device 14 through a pulley, and a main machine base 9 is arranged at the bottom of the grinding chamber 1.

[0023] The grinding rollers 13 are arranged in four layers, and the four layers of grinding rollers 13 and the plurality of rotating disks 16 are arranged alternately with each other.

[0024] The output shaft of the classifier motor 10 is connected to the classifier 8 .

[0025] The grinding ring 12 is sleeved on the outer side of the grinding roller 13 .

[0026] The number of the material throwing trays 11 is four, and the four rotating disks 16 are vertically arranged at equal intervals.

[0027] The pulse dust collector 4 adopts a pulse jet cleaning method, using compressed air to clean each filter bag separately, and the grinding roller 13 and the grinding ring 12 are made of wear-resistant steel.

[0028] The working principle and use process of the utility model are as follows: first, the material is crushed into a size less than 10 mm by a jaw crusher, lifted to a storage hopper 2 by a bucket elevator, and then quantitatively fed into a grinding chamber 1 for grinding by a feeder. The grinding roller 13 installed on a turntable 16 rotates around the central axis, and the grinding roller 13 swings outward horizontally under the action of centrifugal force, so that the grinding roller 13 presses the grinding ring 12, and the grinding roller 13 rotates around the grinding roller pin at the same time. The material passes through the gap between the grinding roller 13 and the grinding ring 12, and the material is crushed and ground due to the rolling of the grinding roller 13. The grinding roller 13 is arranged in 4 layers, and the material is crushed by each layer of the grinding roller 13 and the grinding ring 12 in turn. The ground powder is crushed by gravity. The particles fall onto the chassis just below the lowermost turntable 16 and are blown to the classifier 8 above the grinding chamber 1 for screening under the action of the airflow of the blower 6. Those that are too coarse still fall into the grinding chamber 1 for re-grinding, and those that meet the fineness requirements flow into the pulse dust collector 4 with the wind through the first air duct 3. After collection, they are discharged through the unloading valve at the bottom of the pulse dust collector 4 as finished products. The purified airflow flows into the blower 6 through the second air duct 5 and circulates through the return air duct 7. Except for the positive pressure from the blower 6 to the grinding chamber 1, the airflow in the other pipes flows under negative pressure, and the indoor sanitary conditions are relatively good. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. An ultrafine roller mill, comprising a grinding chamber (1), characterized in that: A storage hopper (2) is connected to one side of the grinding chamber (1); a classifier motor (10) is installed in the middle of the top of the grinding chamber (1); a first air duct (3) is connected to the top of the grinding chamber (1) and located on one side of the classifier motor (10) and is connected to the pulse dust collector (4) on the right; a second air duct (5) is connected to the right side wall of the pulse dust collector (4); a blower (6) is connected to the lower end of the second air duct (5); a return air duct (7) is connected to the air outlet end of the blower (6); one end of the return air duct (7) is connected to the side wall of the grinding chamber (1); and a A classifier (8), wherein a material throwing tray (11) is arranged inside the grinding chamber (1) and directly below the classifier (8), a grinding roller (13) is arranged directly below the material throwing tray (11), a grinding ring (12) is arranged on the outer side of the grinding roller (13), a plurality of turntables (16) are arranged directly below the grinding roller (13), a belt transmission device (14) is installed at the bottom of the lowest turntable (16), a driving motor (15) is installed on the right side of the grinding chamber (1), the driving motor (15) and the belt transmission device (14) are connected via a pulley, and a main machine base (9) is arranged at the bottom of the grinding chamber (1).

2. An ultrafine roller mill according to claim 1, characterized in that: The grinding rollers (13) are arranged in four layers, and the four layers of grinding rollers (13) and the plurality of rotating disks (16) are arranged alternately with each other.

3. An ultrafine roller mill according to claim 1, characterized in that: The output shaft of the classifier motor (10) is connected to the classifier (8).

4. The ultrafine roller mill according to claim 1, characterized in that: The grinding ring (12) is sleeved on the outside of the grinding roller (13).

5. The ultrafine roller mill according to claim 1, characterized in that: The number of the material-throwing discs (11) is set to four, and the four rotating discs (16) are vertically arranged at equal intervals.

6. The ultrafine roller mill according to claim 1, characterized in that: The pulse dust collector (4) adopts a pulse jet type cleaning method, using compressed air to clean each filter bag separately, and the grinding roller (13) and the grinding ring (12) are made of wear-resistant steel.

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