Grinding system for obtaining five materials of different thicknesses

Abstract

This utility model discloses a grinding system for simultaneously producing five coarse and fine materials, belonging to the field of powder processing technology. It includes: a raw material tank and a grading raw material tank; a feeding screw conveyor is fixedly connected to the bottom discharge end of the raw material tank, an ultrafine grinding mill is fixedly connected to the discharge end of the feeding screw conveyor, a first powder collector is fixedly connected to the discharge end of the ultrafine grinding mill, the powder collector has two discharge ends located at the top and bottom, and a dust collector is fixedly connected to the top discharge end of the powder collector; a grading feeding screw conveyor is fixedly connected to the discharge end of the grading feeding screw conveyor, an ultrafine classifier is fixedly connected to the discharge end of the grading feeding screw conveyor, and the ultrafine classifier has two discharge ends located at the top and bottom. This utility model utilizes a two-stage grading system and a multi-discharge end design to obtain five different particle size specifications of powder simultaneously, saving energy and improving production efficiency. The production line under this system significantly improves flexibility and economy.

Description

Technical Field

[0001] This utility model relates to the field of powder processing technology, specifically a grinding system for five coarse and fine materials. Background Technology

[0002] A powder grinding production line typically consists of equipment such as a grinding mill, a powder collector, and a dust collector. A conventional structure can only produce one type of powder at a time. Even with a secondary classification system, it can usually only produce no more than three different finenesses of powder simultaneously, which limits the flexibility and economy of the production line.

[0003] When it is necessary to produce powders of various particle sizes, it is often necessary to repeatedly adjust the equipment or process the material multiple times, resulting in low production efficiency and poor equipment utilization. Therefore, how to efficiently produce more powders of various sizes in the same time has become a technical problem that urgently needs to be solved in this field.

[0004] Based on this, this utility model designs a grinding system for five coarse and fine materials to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding system for five coarse and fine materials to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grinding system for producing five coarse and fine materials simultaneously, comprising: a raw material tank and a grading raw material tank; a feeding screw conveyor is fixedly connected to the bottom discharge end of the raw material tank, an ultrafine grinding mill is fixedly connected to the discharge end of the feeding screw conveyor, the ultrafine grinding mill is equipped with a horizontal multi-head classifier capable of producing high fine powder content, a first powder collector is fixedly connected to the discharge end of the ultrafine grinding mill, the upper part of the powder collector is designed as an adjustable device to adjust the height of the air outlet to adjust the resistance of the air outlet, thereby controlling the fineness of the powder output, the powder collector has two discharge ends located at the top and bottom, and a dust collector is fixedly connected to the top discharge end of the powder collector; The graded raw material barrel is fixedly connected to a graded feeding screw conveyor at its discharge end. The graded feeding screw conveyor is fixedly connected to an ultrafine classifier at its discharge end. The ultrafine classifier has two discharge ends located at the top and bottom. A second powder collector is fixedly connected to the top discharge end of the ultrafine classifier. The upper part of the second powder collector is also designed as an adjustable device to adjust the height of the air outlet barrel, thereby adjusting the resistance of the air outlet and controlling the fineness of the powder. The second powder collector includes two discharge ends at the top and bottom. A fine powder dust collector is fixedly connected to the top discharge end of the second powder collector. The dust collector is fixedly connected to a bidirectional dust collection screw conveyor at its discharge end. The bidirectional dust collection screw conveyor has two discharge ends on its outer wall. The graded raw material barrel is fixedly connected to a bag elevator at its feed end. One discharge end of the bidirectional dust collection screw conveyor is fixedly connected to the bottom feed end of the bag elevator.

[0007] Preferably, the inner shaft of the bidirectional dust collector is fixedly connected to two sets of symmetrical spiral blades, and the two sets of spiral blades are arranged in opposite directions.

[0008] Preferably, the two discharge ends of the bidirectional dust collector screw conveyor are respectively located at the positive and negative spiral blades of the bidirectional dust collector screw conveyor, and a dust collection rotary feeder is fixedly connected to both discharge ends of the bidirectional dust collector screw conveyor.

[0009] Preferably, a first feeder is fixedly connected to the bottom discharge end of the first powder collector, a second feeder is fixedly connected to the bottom discharge end of the ultrafine classifier, and a third feeder is fixedly connected to the bottom discharge end of the second powder collector.

[0010] Preferably, both the dust collector and the fine dust collector are provided with air vents at their top, and the air vents of the dust collector are connected to a system fan, while the air vents of the fine dust collector are connected to an ultra-fine centrifugal fan.

[0011] Preferably, a fine powder screw conveyor is fixedly connected to the bottom discharge end of the fine powder dust collector.

[0012] Preferably, the bottom discharge end of the first dust collector, the bottom discharge end of the ultrafine classifier, the bottom discharge end of the second dust collector, the discharge end of the fine powder screw conveyor, and the discharge end of the bidirectional dust collection screw conveyor away from the bag elevator are respectively used to output materials of different particle sizes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the ultrafine grinding mill equipped with a high-precision horizontal multi-head classifier can produce powder with a high fine powder content. The powder collector is designed to be adjustable, which helps to widen the particle size distribution gap between the powder discharged from the bottom of the powder collector and the powder carried out from the air outlet. With the use of a two-stage classification system and a multi-discharge end design, five different particle size specifications of powder can be obtained at the same time, saving energy and improving production efficiency. The production line under this system significantly improves flexibility and economy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall device system in this embodiment; Figure 2 This is a schematic diagram illustrating the internal structure of the bidirectional dust collection screw conveyor in this embodiment.

[0016] The attached diagram lists the components represented by each number as follows: 1. Raw material hopper; 2. Feeding screw conveyor; 3. Ultrafine grinding mill; 4. First powder collector; 5. First feeder; 6. Dust collector; 7. Bidirectional dust collection screw conveyor; 8. System fan; 9. Bag elevator; 10. Dust collection rotary feeder; 11. Grading raw material hopper; 12. Grading feeding screw conveyor; 13. Ultrafine classifier; 14. Second feeder; 15. Second powder collector; 16. Third feeder; 17. Fine powder dust collector; 18. Fine powder screw conveyor; 19. Ultrafine classifier centrifugal fan. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-2 This utility model provides a technical solution: a grinding system for producing five kinds of coarse and fine materials, including: a raw material tank 1 and a grading raw material tank 11; a feeding screw conveyor 2 is fixedly connected to the bottom discharge end of the raw material tank 1, an ultrafine grinding mill 3 is fixedly connected to the discharge end of the feeding screw conveyor 2, a first powder collector 4 is fixedly connected to the discharge end of the ultrafine grinding mill 3, the powder collector has two discharge ends located at the top and bottom, and a dust collector 6 is fixedly connected to the top discharge end of the powder collector; A grading feeder screw conveyor 12 is fixedly connected to the discharge end of the grading raw material hopper 11. An ultra-fine classifier 13 is fixedly connected to the discharge end of the grading feeder screw conveyor 12. The ultra-fine classifier 13 has two discharge ends located at the top and bottom. A second dust collector 15 is fixedly connected to the top discharge end of the ultra-fine classifier 13. The second dust collector 15 includes two discharge ends at the top and bottom. A fine powder dust collector 17 is fixedly connected to the top discharge end of the second dust collector 15. The dust collector 6 is fixedly connected to the discharge end of a bidirectional dust collector screw conveyor 7. The bidirectional dust collector screw conveyor 7 has two discharge ends on its outer wall. The graded raw material barrel 11 is fixedly connected to the inlet end of a bag elevator 9. One discharge end of the bidirectional dust collector screw conveyor 7 is fixedly connected to the bottom inlet end of the bag elevator 9. By sequentially setting up a raw material tank 1, a feeding screw conveyor 2, an ultrafine grinding mill 3, a first powder collector 4, a dust collector 6, a classifying feeding screw conveyor 12, an ultrafine classifier 13, a second powder collector 15, and a fine powder dust collector 17 in the grinding system, multi-stage grinding and classification of raw materials are achieved. The first powder collector 4 and the second powder collector 15 are both adjustable powder collectors. Through the height of their built-in adjustable return air hoppers, the return air resistance can be flexibly controlled to optimize the balance between classification fineness and output. Then, by utilizing the top and bottom discharge ports of the two powder collectors and the two dust collectors 6, in conjunction with the screw conveyor and the bag elevator 9, multi-path material conveying and multi-particle size product output can be achieved. Five different particle sizes of powder can be produced at the same time. Multiple discharge ports realize the separation of coarse and fine materials and improve the flexibility of the production line.

[0019] More preferably, the inner shaft of the bidirectional dust collector screw conveyor 7 is fixedly connected to two sets of symmetrical spiral blades, and the two sets of spiral blades are arranged in opposite directions. The bidirectional dust collector screw conveyor 7 has symmetrically installed forward and reverse spiral blades on both sides of the shaft, realizing the bidirectional conveying function of materials in the same screw conveyor. After the material is connected to the dust collector 6 in the middle section, the collected powder can be conveyed to two different directions at the same time.

[0020] More preferably, the two discharge ends of the bidirectional dust collector screw conveyor 7 are respectively set at the positive and negative spiral blades of the bidirectional dust collector screw conveyor 7, and the two discharge ends of the bidirectional dust collector screw conveyor 7 are fixedly connected to the dust collection rotary feeder 10. The bidirectional dust-collecting screw conveyor 7 is equipped with dust-collecting rotary feeders 10 at both discharge ends, corresponding to the discharge positions of the positive and negative spiral blades, to achieve precise material conveying and ensure the uniformity and stability of the discharge from both sides.

[0021] More preferably, the bottom discharge end of the first powder collector 4 is fixedly connected to the first feeder 5, the bottom discharge end of the ultrafine classifier 13 is fixedly connected to the second feeder 14, and the bottom discharge end of the second powder collector 15 is fixedly connected to the third feeder 16. Feeders are installed at the bottom discharge ends of the first powder collector 4, the ultrafine classifier 13, and the second powder collector 15 to achieve quantitative discharge of each powder and control the discharge speed and flow rate of each stage.

[0022] More preferably, both the dust collector 6 and the fine dust collector 17 are provided with air vents at their top, and the air vent of the dust collector 6 is connected to the system fan 8, and the air vent of the fine dust collector 17 is connected to the ultra-fine centrifugal fan 19. Dust collector 6 and fine dust collector 17 are equipped with air vents at the top, which are connected to the system fan 8 and the ultrafine centrifugal fan 19. The airflow efficiently separates and transports the fine powder, maintains negative pressure operation inside the system, and reduces dust overflow.

[0023] In a further preferred embodiment, a fine powder screw conveyor 18 is fixedly connected to the bottom discharge end of the fine powder dust collector 17; The bottom of the fine powder dust collector 17 is equipped with a fine powder screw conveyor 18 to assist in the directional conveying of fine powder to the finished product area, ensuring continuous and stable discharge of fine powder and avoiding accumulation.

[0024] More preferably, the bottom discharge end of the first dust collector 4, the bottom discharge end of the ultrafine classifier 13, the bottom discharge end of the second dust collector 15, the discharge end of the fine powder screw conveyor 18, and the discharge end of the bidirectional dust collection screw conveyor 7 away from the bag elevator 9 are respectively used to output materials of different particle sizes. The bottom discharge end of the first powder collector 4, the bottom discharge end of the ultrafine classifier 13, the bottom discharge end of the second powder collector 15, the discharge end of the fine powder screw conveyor 18, and the discharge end of the bidirectional dust collection screw conveyor 7 away from the bag elevator 9 are used as the final output outlets for materials of different particle sizes. One production line can produce five kinds of powders of different particle sizes at the same time to meet the needs of different customers.

[0025] A specific application of this embodiment is as follows: During system production, the raw material to be ground is put into the raw material tank 1, the feeding screw conveyor is started, and the raw material is transported to the ultrafine grinding mill 3 for grinding. The ultrafine grinding mill 3 is equipped with a multi-head horizontal classifier, which can produce powder with a high fine powder content. The ground material enters the first powder collector 4. The coarser powder is discharged through the first feeder 5 at the bottom discharge end (the first specification of powder); the finer powder is sent to the dust collector 6 through the top discharge end. The powder output from the dust collector 6 enters the modified dust collector screw conveyor, which pushes the powder to two discharge ends under the control of its forward and reverse screw blades. The discharge end that is connected to the bag elevator 9 sends the powder to the grading raw material tank 11 under the control of the dust collector rotary feeder 10 and in cooperation with the bag elevator 9. The other discharge end is directly output (the second specification of powder) under the control of the dust collector rotary feeder 10. The raw material bin 11 is fed into the ultrafine classifier 13 by the graded feeding screw conveyor 12. The coarse powder is discharged through the second feeder 14 at the bottom of the ultrafine classifier 13 (the third specification of powder). The fine powder is fed into the second powder collector 15 at the top. The second powder collector 15 further divides the fine powder into two specifications. The coarse powder is discharged through the third feeder 16 at the bottom (the fourth specification of powder). The fine powder is fed into the fine powder dust collector 17 at its top. The fine powder dust collector 17 discharges the finest powder through the fine powder screw conveyor 18 at its bottom, and discharges the fifth type of powder. The five different types of powder can be directly packaged or stored in their respective finished product tanks by pneumatic conveying.

[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grinding system for producing five coarse and fine materials simultaneously, characterized in that, include: Raw material bucket (1) and graded raw material bucket (11); a feeding screw conveyor (2) is fixedly connected to the bottom discharge end of the raw material bucket (1), an ultrafine grinding mill (3) is fixedly connected to the discharge end of the feeding screw conveyor (2), a first powder collector (4) is fixedly connected to the discharge end of the ultrafine grinding mill (3), the powder collector has two discharge ends located at the top and bottom, and a dust collector (6) is fixedly connected to the top discharge end of the powder collector; The graded raw material tank (11) is fixedly connected to a graded feeding screw conveyor (12) at the discharge end. The graded feeding screw conveyor (12) is fixedly connected to an ultra-fine classifier (13) at the discharge end. The ultra-fine classifier (13) has two discharge ends located at the top and bottom. The top discharge end of the ultra-fine classifier (13) is fixedly connected to a second dust collector (15). The second dust collector (15) includes two discharge ends at the top and bottom. The top discharge end of the second dust collector (15) is fixedly connected to a fine powder dust collector (17). The dust collector (6) is fixedly connected to a bidirectional dust collection screw conveyor (7) at its discharge end. The bidirectional dust collection screw conveyor (7) has two discharge ends on its outer wall. The graded raw material barrel (11) is fixedly connected to a bag elevator (9) at its feed end. One discharge end of the bidirectional dust collection screw conveyor (7) is fixedly connected to the bottom feed end of the bag elevator (9).

2. The grinding system for producing five coarse and fine materials according to claim 1, characterized in that: The inner shaft of the bidirectional dust collector (7) is fixedly connected to two sets of symmetrical spiral blades, and the two sets of spiral blades are arranged in opposite directions.

3. The grinding system for producing five coarse and fine materials according to claim 2, characterized in that: The two discharge ends of the bidirectional dust collector screw conveyor (7) are respectively located at the positive and negative spiral blades of the bidirectional dust collector screw conveyor (7), and the two discharge ends of the bidirectional dust collector screw conveyor (7) are fixedly connected to a dust collection rotary feeder (10).

4. The grinding system for producing five coarse and fine materials according to claim 1, characterized in that: The bottom discharge end of the first powder collector (4) is fixedly connected to the first feeder (5), the bottom discharge end of the ultrafine classifier (13) is fixedly connected to the second feeder (14), and the bottom discharge end of the second powder collector (15) is fixedly connected to the third feeder (16).

5. The grinding system for producing five coarse and fine materials according to claim 1, characterized in that: Both the dust collector (6) and the fine dust collector (17) are provided with air vents at their top ends. The air vent of the dust collector (6) is connected to the system fan (8), and the air vent of the fine dust collector (17) is connected to the ultra-fine centrifugal fan (19).

6. The grinding system for producing five coarse and fine materials according to claim 1, characterized in that: The fine powder dust collector (17) is fixedly connected to a fine powder screw conveyor (18) at the bottom discharge end.

7. The grinding system for producing five coarse and fine materials according to claim 6, characterized in that: The bottom discharge end of the first dust collector (4), the bottom discharge end of the ultrafine classifier (13), the bottom discharge end of the second dust collector (15), the discharge end of the fine powder screw conveyor (18), and the discharge end of the bidirectional dust collection screw conveyor (7) away from the bag elevator (9) are used to output materials of different particle sizes.

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