Dual stage grinding vertical mill grinding device

Abstract

The utility model relates to calcium carbonate grinding technical field, concretely is vertical mill grinder grinding device of two -stage grinding, grinding assembly includes grinding bucket, the fixed screw is annular array distribution at the outer wall of grinding bucket. The vertical mill grinder grinding device of two -stage grinding, the calcium carbonate that needs to polish is placed in the grinding bucket through the feed inlet, and the rotation of the rotating disc is driven through the external motor simultaneously, makes the calcium carbonate in the grinding bucket constantly through the polishing piece and the polishing roller and rotates, in the process of rotating, the calcium carbonate is constantly polished and makes it gradually moves back, and the polishing roller is circular truncated cone, the calcium carbonate is smaller and smaller in the process of constantly moving back, the polished calcium carbonate powder is accumulated at fixed disc no.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbonate grinding technology, specifically a vertical grinding mill grinding device for two-stage grinding. Background Technology

[0002] The dual-stage vertical grinding mill is a vertical grinding equipment that achieves material crushing and refining through a two-stage grinding structure. It is mainly used for grinding ores and non-metallic minerals in industries such as mining, building materials, chemicals, and metallurgy. Its core feature is that it decomposes the traditional single grinding process into two stages: coarse grinding and fine grinding. By optimizing the grinding path and energy utilization, it improves grinding efficiency and finished product precision.

[0003] After prolonged use of the grinding mill, the grinding rollers and grinding discs will wear due to friction with the material, causing changes in the grinding structure and pressure, affecting grinding efficiency and product quality. For finished products with high fineness requirements, the decrease in production capacity will be more obvious. At the same time, if the particle size of the material fed into the mill is too large or too small, the moisture content is too high, the grindability is poor, or the feed rate fluctuates greatly, it will disrupt the gradation balance of the material layer on the grinding disc, causing the mill to vibrate. To address this, we have proposed a two-stage grinding vertical grinding mill grinding device. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical grinding mill grinding device with two-stage grinding, to solve the problem mentioned in the background art where, after prolonged use of the grinding mill, the grinding rollers and grinding disc wear due to friction with the material, leading to changes in the grinding structure and pressure, affecting grinding efficiency and product quality. For finished products with high fineness requirements, the decrease in production capacity is more significant. Furthermore, excessively large or small particle size of the feed material, excessive moisture content, poor grindability, and large fluctuations in feed rate can all disrupt the gradation balance of the material layer on the grinding disc, causing mill vibration. To achieve the above objective, this utility model provides the following technical solution: a vertical grinding mill grinding device with two-stage grinding, including a fixed base;

[0005] A grinding assembly includes a grinding barrel, a connecting frame fixedly connected to the side surface of the grinding barrel, a rotating disk fixedly connected to the side surface of the connecting frame, a first fixed disk fixedly connected inside the grinding barrel, a grinding disc fixedly connected to the inner wall of the grinding barrel, a plurality of fixing screws fixedly connected to the side surface of the grinding disc penetrating the outer wall of the grinding barrel, the fixing screws being arranged in a circular array on the outer wall of the grinding barrel, a second fixed disk fixedly connected inside the grinding barrel, a connecting plate fixedly connected to one side of the second fixed disk, a plurality of fixing posts fixedly connected to one side of the connecting plate, the fixing posts being arranged in a circular array on one side of the connecting plate, a fixing ring fixedly connected to the other end of the fixing posts, and a grinding roller fixedly connected to one end of the fixing ring.

[0006] More preferably, the top of the fixed base is fixedly connected to two support frames, which are symmetrically distributed on the top of the fixed base. The calcium carbonate to be ground is placed in the grinding barrel through the feed inlet, and the rotating disk is driven by an external motor to rotate, so that the calcium carbonate in the grinding barrel is continuously rotated by the grinding disc and the grinding roller.

[0007] In a further preferred embodiment, the tops of the two support frames are respectively fixedly connected to stabilizing plates. During the rotation process, the calcium carbonate is continuously polished, causing it to gradually move backward. At the same time, the polishing roller is frustum-shaped, and the calcium carbonate becomes smaller and smaller as it moves backward. The polished calcium carbonate powder accumulates at the two fixed disks.

[0008] More preferably, a limiting block is fixedly connected to the top of the stabilizing plate, and a connecting piece is fixedly connected to the top of the limiting block. A two-stage grinding process is adopted. The first stage of grinding realizes the initial crushing and coarse grinding of the material, and the second stage realizes fine grinding through a higher precision grinding component, which shortens the single grinding time and increases the output per unit time.

[0009] In a further preferred embodiment, the connector has an internal feed inlet, which is connected to the grinding barrel. The material forms a stable material layer on the grinding disc, and the grinding roller crushes the material layer by applying pressure. Multi-stage crushing can be achieved in a single pass, reducing the energy consumption of repeated grinding, and the grinding intensity can be controlled in stages.

[0010] Further preferably, the other side of the fixed plate is provided with a discharge port, and the discharge port is fixedly connected to a conveying pipe to avoid over-grinding caused by excessive grinding in a single stage, improve the effective yield, adopt fully enclosed negative pressure operation to reduce dust pollution in the workshop, and the compact structure reduces material transfer links, further reducing the risk of dust.

[0011] More preferably, a conveying auger is fixedly connected inside the conveying pipe, and a buffer box is fixedly connected to the other end of the conveying pipe.

[0012] More preferably, a baffle plate is fixedly and movably connected inside the buffer box, and a discharge port is opened at the other end of the buffer box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, the calcium carbonate to be ground is placed in a grinding barrel through the feed inlet. An external motor drives a rotating disc, causing the calcium carbonate in the grinding barrel to continuously rotate through the grinding discs and rollers. During this rotation, the calcium carbonate is continuously ground, causing it to gradually move backward. The grinding rollers are frustum-shaped, and the calcium carbonate becomes smaller as it moves backward. The ground calcium carbonate powder accumulates at two points on the fixed disc. A two-stage grinding process is employed: the first stage achieves initial crushing and coarse grinding of the material, while the second stage uses higher-precision grinding components to achieve fine grinding, shortening the single grinding time and increasing the output per unit time.

[0015] In this invention, the material forms a stable layer on the grinding disc, and the grinding roller crushes the material layer by applying pressure. Multi-stage crushing can be achieved in a single pass, reducing the energy consumption of repeated grinding. By controlling the grinding intensity in stages, the over-grinding phenomenon caused by excessive grinding in a single stage is avoided, thereby improving the effective yield. The fully enclosed negative pressure operation reduces dust pollution in the workshop, and the compact structure reduces material transfer links, further reducing the risk of dust. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional main structure of this utility model;

[0017] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 This utility model Figure 2 Enlarged structural diagram at point C;

[0021] Figure 6 This is a three-dimensional structural diagram of the present invention viewed from below.

[0022] In the diagram: 1. Fixed base; 2. Support frame; 3. Stabilizing plate; 4. Limiting block; 5. Connecting piece; 6. Feed inlet; 7. Grinding assembly; 8. Discharge outlet; 9. Conveying pipe; 10. Conveying auger; 11. Buffer box; 12. Baffle plate; 13. Discharge outlet; 701. Grinding barrel; 702. Connecting frame; 703. Rotating disc; 704. Fixed disc one; 705. Grinding disc; 706. Fixing screw; 707. Fixed disc two; 708. Connecting plate; 709. Fixing column; 710. Fixing ring; 711. Grinding roller. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-6 The present invention provides a technical solution: a vertical grinding mill grinding device for two-stage grinding, including a fixed base 1;

[0025] Grinding assembly 7 includes a grinding barrel 701. A connecting frame 702 is fixedly connected to the side surface of the grinding barrel 701. A rotating disk 703 is fixedly connected to the side surface of the connecting frame 702. A first fixing disk 704 is fixedly connected inside the grinding barrel 701. A grinding disc 705 is fixedly connected to the inner wall of the grinding barrel 701. Several fixing screws 706 are fixedly connected through the side surface of the grinding disc 705 to the outer wall of the grinding barrel 701. The fixing screws 706 are arranged in a circular array on the outer wall of the grinding barrel 701. A second fixing disk 707 is fixedly connected inside the grinding barrel 701. A connecting plate 708 is fixedly connected to one side of the second fixing disk 707. Several fixing posts 709 are fixedly connected to one side of the connecting plate 708. The calcium carbonate to be ground is placed in the grinding barrel 701 through the feed inlet 6, and simultaneously... An external motor drives the rotating disk 703 to rotate, causing the calcium carbonate in the grinding barrel 701 to continuously rotate through the grinding disc 705 and the grinding roller 711. During the rotation, the calcium carbonate is continuously ground, causing it to gradually move backward. At the same time, the grinding roller 711 is frustum-shaped, and the calcium carbonate becomes smaller and smaller as it moves backward. The ground calcium carbonate powder accumulates at the fixed disk 707. A two-stage grinding process is adopted. The first stage of grinding achieves the initial crushing and coarse grinding of the material, and the second stage achieves fine grinding through higher precision grinding components, shortening the single grinding time and increasing the output per unit time. The fixed columns 709 are distributed in a ring array on one side of the connecting plate 708. The other end of the fixed columns 709 is fixedly connected to the fixed ring 710, and one end of the fixed ring 710 is fixedly connected to the grinding roller 711.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, two support frames 2 are fixedly connected to the top of the fixed base 1. The two support frames 2 are symmetrically distributed on the top of the fixed base 1. A stabilizing plate 3 is fixedly connected to the top of each of the two support frames 2. A limiting block 4 is fixedly connected to the top of the stabilizing plate 3. A connecting piece 5 is fixedly connected to the top of the limiting block 4. A feed port 6 is opened inside the connecting piece 5. The connecting piece 5 is connected to the grinding barrel 701 through the feed port 6.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a discharge port 8 is provided on the other side of the fixed disk 707. A conveying pipe 9 is fixedly connected inside the discharge port 8. A conveying auger 10 is fixedly connected inside the conveying pipe 9. The material is then conveyed out through the conveying auger 10 in the discharge port 8, so that the ground calcium carbonate powder is discharged from the discharge port 13 and collected by the user. The material forms a stable material layer on the grinding disk. The grinding roller crushes the material layer by applying pressure. Multi-stage crushing can be achieved in a single pass, reducing the energy consumption of repeated grinding. By controlling the grinding intensity in stages, the over-grinding phenomenon caused by excessive grinding in a single stage is avoided, thereby improving the effective yield. The fully enclosed negative pressure operation reduces dust pollution in the workshop. The compact structure reduces the material transfer links and further reduces the risk of dust. A buffer box 11 is fixedly connected to the other end of the conveying pipe 9. A baffle plate 12 is fixedly and movably connected inside the buffer box 11. A discharge port 13 is provided at the other end of the buffer box 11.

[0028] The usage and advantages of this utility model: The working process of this dual-stage vertical grinding mill is as follows:

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, when using this two-stage vertical grinding mill, the calcium carbonate to be ground is first placed in the grinding drum 701 through the feed inlet 6. Simultaneously, an external motor drives the rotating disk 703 to rotate, causing the calcium carbonate in the grinding drum 701 to continuously rotate through the grinding discs 705 and the grinding roller 711. During rotation, the calcium carbonate is continuously ground, causing it to gradually move backward. The grinding roller 711 is frustum-shaped, and the calcium carbonate becomes smaller as it moves backward. The ground calcium carbonate powder accumulates at the fixed disk 707. This two-stage grinding process achieves initial crushing and coarse grinding of the material in the first stage, and the second stage… Fine grinding is achieved through higher precision grinding components, shortening the single grinding time and increasing the output per unit time. After accumulation, the material is conveyed out through the conveyor auger 10 in the discharge port 8, so that the ground calcium carbonate powder is discharged from the discharge port 13 for collection by personnel. The material forms a stable material layer on the grinding disc, and the grinding roller crushes the material layer by applying pressure. Multi-stage crushing can be achieved in a single pass, reducing the energy consumption of repeated grinding. By controlling the grinding intensity in stages, the over-grinding phenomenon caused by excessive grinding in a single stage is avoided, improving the effective yield. The fully enclosed negative pressure operation reduces dust pollution in the workshop, and the compact structure reduces material transfer links, further reducing the risk of dust.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vertical grinding mill grinding device with two-stage grinding, characterized in that, Includes a fixed base (1); A grinding assembly (7) includes a grinding barrel (701), a connecting frame (702) fixedly connected to the side surface of the grinding barrel (701), a rotating disk (703) fixedly connected to the side surface of the connecting frame (702), a fixing disk (704) fixedly connected inside the grinding barrel (701), a grinding disc (705) fixedly connected to the inner wall of the grinding barrel (701), and a plurality of fixing screws (706) fixedly connected through the side surface of the grinding disc (705) to the outer wall of the grinding barrel (701). The grinding barrel (701) has a ring array on its outer wall. A second fixed disk (707) is fixedly connected inside the grinding barrel (701). A connecting plate (708) is fixedly connected to one side of the second fixed disk (707). A number of fixed columns (709) are fixedly connected to one side of the connecting plate (708). The fixed columns (709) are arranged in a ring array on one side of the connecting plate (708). A fixed ring (710) is fixedly connected to the other end of the fixed columns (709). A grinding roller (711) is fixedly connected to one end of the fixed ring (710).

2. The vertical grinding mill grinding device for two-stage grinding according to claim 1, characterized in that: The top of the fixed base (1) is fixedly connected to two support frames (2), and the two support frames (2) are symmetrically distributed on the top of the fixed base (1).

3. The vertical grinding mill grinding device for two-stage grinding according to claim 2, characterized in that: The tops of the two support frames (2) are respectively fixedly connected to stabilizing plates (3).

4. The vertical grinding mill grinding device for two-stage grinding according to claim 3, characterized in that: The top of the stabilizing plate (3) is fixedly connected to a limiting block (4), and the top of the limiting block (4) is fixedly connected to a connector (5).

5. The vertical grinding mill grinding device for two-stage grinding according to claim 4, characterized in that: The connector (5) has an inlet (6) inside, and the connector (5) is connected to the grinding barrel (701) through the inlet (6).

6. The vertical grinding mill grinding device for two-stage grinding according to claim 5, characterized in that: The other side of the fixed plate 2 (707) is provided with a discharge port (8), and the discharge port (8) is fixedly connected to a conveying pipe (9).

7. The vertical grinding mill grinding device for two-stage grinding according to claim 6, characterized in that: The conveying pipe (9) is fixedly connected to a conveying auger (10), and the other end of the conveying pipe (9) is fixedly connected to a buffer box (11).

8. The vertical grinding mill grinding device for two-stage grinding according to claim 7, characterized in that: The buffer box (11) is fixedly and movably connected to a baffle plate (12), and a discharge port (13) is opened at the other end of the buffer box (11).

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