Cement classification grinding system with high hydration rate

Abstract

The utility model discloses a kind of high hydration rate cement grading grinding system, including mounting bracket and motor, mounting bracket is sequentially provided with multiple grinding devices from top to bottom in ladder form, grinding device includes grinding barrel, sequentially provided with hopper, grinding roller, grinding table and filter screen from top to bottom in grinding barrel, grinding roller is abutted in the upper end surface of grinding table, grinding table is rotatably installed in grinding barrel by motor, filter screen is set below in the lower edge portion of grinding table;Filter screen further includes the second discharge outlet of inclined arrangement, the second discharge outlet in the grinding device of high place is located above the hopper of next grinding device, the bottom of grinding barrel is provided with first discharge outlet;The utility model can carry out multistage grinding setting to the grinding work of cement by sequentially setting multiple grinding devices in ladder form, filter screen timely screens qualified cement, does not affect the continuous feeding of cement grinding work, improves the overall grinding efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of cement grinding equipment, specifically a high hydration rate cement grading and grinding system. Background Technology

[0002] Cement grinding equipment is a core piece of equipment in the cement production process. It is a specialized piece of equipment used to process raw materials such as cement clinker, gypsum, and admixtures (such as slag and fly ash) into finished cement products that meet the requirements of particle size, fineness, and performance through grinding, crushing, and homogenization processes. The grinding process has problems such as low grinding efficiency, high energy consumption (unit power consumption exceeds 100kWh / t), and large fluctuations in product fineness.

[0003] In the prior art, patent application CN202410987138.9 discloses a grading grinding device for cement production, including a frame, a primary crushing component located at the top inside the frame, a secondary crushing component located in the middle, a screening component located at the bottom, and a connecting component that transmits a power source to the screening component. This grading grinding device for cement production, through the addition of arc-shaped extrusion blocks and spiral return protrusions to the secondary crushing component, allows the raw materials to be crushed. During the crushing of cement raw materials, the rotating rollers carry the raw materials, lifting them up. As the spiral return protrusions move further away from the adjacent arc-shaped extrusion blocks, the raw materials carried by the spiral return protrusions slide off the protrusions into the space between the extrusion surface and the adjacent arc-shaped extrusion blocks. The continuous rotation of the spiral return protrusions further crushes the raw materials, improving the fineness of the crushing process for cement raw materials.

[0004] The grinding device provided by the aforementioned patent improves the fineness of cement raw material crushing by adding arc-shaped extrusion blocks and spiral return protrusions. During the crushing of cement raw materials, the material is lifted by the spiral return protrusions as the roller rotates. However, this cement processing device fails to promptly separate the qualified particle size from the ground cement, resulting in the occupation of grinding space and processing time. This causes substandard coarse particles to continuously mix and grind with qualified fine particles, reducing overall grinding efficiency and potentially leading to unnecessary loss of qualified particles due to over-grinding, thus increasing energy costs. Utility Model Content

[0005] The purpose of this invention is to provide a high hydration rate cement grading and grinding system, which aims to improve the existing cement production grading and grinding devices, which fail to screen qualified cement particles in time, resulting in increased grinding space occupation, extended processing time, and consequently reduced overall grinding efficiency, excessive grinding loss of qualified particles, and increased energy costs.

[0006] This utility model is implemented as follows:

[0007] A high hydration rate cement grading and grinding system includes a mounting bracket and a motor. The mounting bracket has multiple grinding devices arranged in a stepped manner from top to bottom. Each grinding device includes a grinding drum, and within the grinding drum, from top to bottom, a feeding hopper, a grinding roller, a grinding table, and a filter screen are arranged sequentially. The grinding roller abuts against the upper surface of the grinding table, which is rotatably mounted in the grinding drum by the motor. The filter screen is arranged around the lower edge of the grinding table. The filter screen also includes an inclined second discharge port. The second discharge port of the higher grinding device is located above the feeding hopper of the next grinding device. A first discharge port is provided at the bottom of the grinding drum.

[0008] Preferably, the grinding drum also includes a lid, the upper end of which is detachably fitted with a lid, the lid having an installation platform, the upper end of which is fixedly fitted with an installation plate that matches the installation platform, the installation plate being installed on the installation platform, and the hopper being fixedly installed on the lid and abutting against the upper surface of the installation plate.

[0009] Preferably, it also includes a locking device. Multiple locking devices are arranged sequentially along the circumference of the upper outer surface of the grinding barrel. The barrel cover is detachably installed on the upper port of the grinding barrel through the locking device.

[0010] Preferably, the hopper is provided with a plurality of mounting bolts in sequence along its circumference, and the bucket cover is provided with bolt holes corresponding to each mounting bolt, and the mounting bolts are threaded into the bolt holes.

[0011] Preferably, the grinding barrel further includes a mounting column, and the mounting column is vertically arranged inside the grinding barrel. A mounting shaft is installed on the lower end face of the grinding table. The mounting shaft is rotatably installed in the mounting column, and the lower end of the mounting shaft is connected to a motor.

[0012] Preferably, the filter screen has an installation port, and the filter screen is installed in the mounting column through the installation port and is located below the grinding table.

[0013] Preferably, the grinding drum has a discharge ramp at its inner bottom, and the lowest point of the discharge ramp has a first discharge port for discharging material.

[0014] Preferably, the grinding table further includes a vibrating ball, and a plurality of springs are vertically arranged in sequence along the circumference of the lower end face of the grinding table, and the lower end of the springs is connected to a vibrating ball that abuts against the surface of the filter screen.

[0015] Preferably, the grinding roller includes a roller body, and a plurality of roller bodies are sequentially arranged at the lower end of the grinding roller along its circumferential direction, with the lower surfaces of the plurality of roller bodies abutting against the upper surface of the grinding table.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model uses a mounting bracket to set up multiple grinding devices in a stepped manner from top to bottom, which can perform multi-stage grinding of cement. The qualified cement can be screened out in time through the filter screen in the grinding device without affecting the continuous feeding of cement grinding, thus effectively improving the overall grinding efficiency.

[0018] 2. This utility model achieves a vibration effect on the filter screen by setting a vibrating ball on the lower end face of the rotating grinding table and elastically abutting against the upper end face of the filter screen. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the grinding device of this utility model;

[0021] Figure 3 This is a cross-sectional structural schematic diagram of the grinding bucket of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure of the grinding table, mounting shaft and motor of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the bucket lid of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the feeding hopper of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the grinding roller of this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the filter screen of this utility model;

[0027] Figure 9 This is a cross-sectional structural diagram of the filter screen of this utility model.

[0028] In the diagram: 1. Mounting bracket; 2. Grinding bucket; 201. Mounting column; 202. Discharge slope; 203. First discharge port; 3. Bucket cover; 301. Mounting platform; 302. Bolt hole; 4. Feed hopper; 401. Mounting bolt; 5. Grinding roller; 501. Roller body; 502. Mounting plate; 6. Grinding table; 601. Vibrating ball; 7. Filter screen; 701. Mounting port; 702. Second discharge port; 8. Mounting shaft; 9. Motor; 10. Locking device. Detailed Implementation

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, a high hydration rate cement grading and grinding system includes a mounting bracket 1 and a motor 9. The mounting bracket 1 has a stepped structure, and multiple grinding devices are arranged sequentially from top to bottom on the mounting bracket 1. Each grinding device includes a grinding barrel 2, and from top to bottom, a feeding hopper 4, a grinding roller 5, a grinding table 6, and a filter screen 7 are arranged in the grinding barrel 2. The grinding roller 5 abuts against the upper end face of the grinding table 6. The grinding table 6 is rotated and installed in the grinding barrel 2 by the motor 9. The filter screen 7 is arranged around the lower edge of the grinding table 6. The filter screen 7 also includes an inclined second discharge port 702. The second discharge port 702 of the grinding device located at the higher position is located above the feeding hopper 4 of the next grinding device. A first discharge port 203 is provided at the bottom of the grinding barrel 2. The grinding drum 2 uses a filter screen 7 to classify and screen the ground cement, separating it into different particle sizes. The cement powder that does not pass through the filter screen 7 is fed into the feed hopper 4 of the next-stage grinding device through the second discharge port 702 of the filter screen 7 for multi-stage grinding.

[0033] like Figure 1 , Figure 2 and Figures 5-7As shown, the grinding drum 2 also includes a lid 3, which is detachably mounted on the upper end of the grinding drum 2. It also includes a locking device 10, with multiple locking devices 10 arranged sequentially along the circumference of the upper outer surface of the grinding drum 2. The lid 3 is detachably mounted on the upper end of the grinding drum 2 via the locking devices 10. The locking device 10 is a press-type spring lock. A mounting platform 301 is provided on the lid 3. A mounting plate 502, compatible with the mounting platform 301, is fixedly mounted on the upper end of the grinding roller 5. The mounting plate 502 is mounted on the mounting platform 301. The hopper 4 is fixedly mounted on the lid 3 and abuts against the upper surface of the mounting plate 502. The grinding roller 5 includes a roller body 501. Multiple roller bodies 501 are sequentially arranged rotatably along the circumference of the lower end of the grinding roller 5. The lower surfaces of the multiple roller bodies 501 abut against the upper surface of the grinding table 6. Multiple mounting bolts 401 are arranged sequentially along the circumference of the hopper 4, and bolt holes 302 corresponding to each mounting bolt 401 are provided on the bucket cover 3. The mounting bolts 401 are threaded into the bolt holes 302.

[0034] like Figures 1-4 and Figures 7-9 As shown, the grinding drum 2 also includes a mounting column 201, which is vertically arranged inside the grinding drum 2. A mounting shaft 8 is mounted on the lower end face of the grinding table 6, and the mounting shaft 8 is rotatably mounted in the mounting column 201. The lower end of the mounting shaft 8 is connected to a motor 9. A filter screen 7 has a mounting port 701, which is installed in the mounting column 201 and located below the grinding table 6. The grinding table 6 also includes vibrating balls 601. Multiple springs are vertically arranged along the circumference of the lower end face of the grinding table 6, and the lower ends of the springs are connected to vibrating balls 601 that abut against the surface of the filter screen 7. A discharge slope 202 is provided at the bottom of the grinding drum 2, and a first discharge port 203 for discharging material is provided at the lowest point of the discharge slope 202. The grinding table 6 is rotated by the motor 9, and the roller 501 also rotates through friction with the grinding table 6, thereby realizing the grinding function. During the rotation of the grinding table 6, the cement raw materials will be automatically expanded and spread from the feeding center to the edge through centrifugal force, so as to be fully ground.

[0035] Example 2

[0036] like Figure 1 , Figure 2 , Figure 8 and Figure 9As shown, a high hydration rate cement grading and grinding system includes a mounting bracket 1 and a motor 9. The mounting bracket 1 has multiple grinding devices arranged in a stepped manner from top to bottom. Each grinding device includes a grinding barrel 2, in which a feeding hopper 4, a grinding roller 5, a grinding table 6, and a filter screen 7 are arranged in sequence from top to bottom. The grinding roller 5 abuts against the upper end face of the grinding table 6. The grinding table 6 is rotatably mounted in the grinding barrel 2 by the motor 9. The filter screen 7 is arranged around the lower edge of the grinding table 6. The filter screen 7 also includes an inclined second discharge port 702. The second discharge port 702 of the grinding device located at the higher position is located above the feeding hopper 4 of the next grinding device. A first discharge port 203 is provided at the bottom of the grinding barrel 2.

[0037] like Figure 1 , Figure 2 and Figures 5-7 As shown, the grinding drum 2 also includes a lid 3, which is detachably mounted on the upper end of the grinding drum 2. It also includes a locking device 10, with multiple locking devices 10 sequentially arranged along the circumference of the upper outer surface of the grinding drum 2. The lid 3 is detachably mounted on the upper end of the grinding drum 2 via the locking devices 10. A mounting platform 301 is provided on the lid 3. A mounting plate 502, compatible with the mounting platform 301, is fixedly mounted on the upper end of the grinding roller 5. The mounting plate 502 is mounted on the mounting platform 301. The hopper 4 is fixedly mounted on the lid 3 and abuts against the upper surface of the mounting plate 502. The grinding roller 5 includes a roller body 501. Multiple roller bodies 501 are sequentially arranged rotatably along the circumference of the lower end of the grinding roller 5, and the lower surfaces of the multiple roller bodies 501 abut against the upper surface of the grinding table 6. Multiple mounting bolts 401 are arranged sequentially along the circumference of the hopper 4, and bolt holes 302 corresponding to each mounting bolt 401 are provided on the bucket cover 3. The mounting bolts 401 are threaded into the bolt holes 302.

[0038] like Figures 1-4 and Figures 7-9 As shown, the grinding drum 2 also includes a mounting column 201, which is vertically arranged inside the grinding drum 2. A mounting shaft 8 is mounted on the lower end face of the grinding table 6, and the mounting shaft 8 is rotatably mounted in the mounting column 201. The lower end of the mounting shaft 8 is connected to a motor 9. A filter screen 7 has a mounting port 701, which is installed in the mounting column 201 and located below the grinding table 6. The grinding table 6 also includes vibrating balls 601. Multiple springs are vertically arranged along the circumference of the lower end face of the grinding table 6, and the lower ends of the springs are connected to vibrating balls 601 that abut against the surface of the filter screen 7. A discharge slope 202 is provided at the bottom of the grinding drum 2, and a first discharge port 203 for discharging material is provided at the lowest point of the discharge slope 202.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-hydration-rate cement grading and grinding system, comprising a mounting bracket (1), characterized in that, It also includes a motor (9). The mounting bracket (1) is arranged in a stepped manner from top to bottom with multiple grinding devices. The grinding device includes a grinding barrel (2). The grinding barrel (2) is arranged in a step-like manner from top to bottom with a feeding hopper (4), a grinding roller (5), a grinding table (6) and a filter screen (7). The grinding roller (5) abuts against the upper end face of the grinding table (6). The grinding table (6) is rotatably installed in the grinding barrel (2) by the motor (9). The filter screen (7) is arranged around the lower edge of the grinding table (6). The filter screen (7) also includes an inclined second discharge port (702). The second discharge port (702) of the grinding device located at the higher position is located above the feeding hopper (4) of the next grinding device. The bottom of the grinding barrel (2) is provided with a first discharge port (203).

2. The high hydration rate cement grading and grinding system according to claim 1, characterized in that, In addition, a bucket lid (3) is included. The upper end of the grinding bucket (2) is detachably fitted with a bucket lid (3). An installation platform (301) is provided on the bucket lid (3). An installation plate (502) that is compatible with the installation platform (301) is fixedly provided on the upper end of the grinding roller (5). The installation plate (502) is installed on the installation platform (301). The hopper (4) is fixedly installed on the bucket lid (3) and abuts against the upper end face of the installation plate (502).

3. The high hydration rate cement grading and grinding system according to claim 2, characterized in that, In addition, a locking device (10) is included. Multiple locking devices (10) are arranged sequentially along the circumferential direction on the upper side of the outer surface of the grinding barrel (2). The barrel cover (3) is detachably installed on the upper port of the grinding barrel (2) through the locking device (10).

4. The high hydration rate cement grading and grinding system according to claim 2, characterized in that, The hopper (4) is provided with a plurality of mounting bolts (401) arranged in sequence along its circumference. The bucket cover (3) is provided with bolt holes (302) corresponding to each mounting bolt (401). The mounting bolts (401) are threaded into the bolt holes (302).

5. The high hydration rate cement grading and grinding system according to claim 1, characterized in that, The grinding barrel (2) also includes a mounting column (201). The mounting column (201) is vertically arranged inside the grinding barrel (2). The lower end face of the grinding table (6) is equipped with a mounting shaft (8). The mounting shaft (8) is rotatably installed in the mounting column (201). The lower end of the mounting shaft (8) is connected to a motor (9).

6. A high hydration rate cement grading and grinding system according to claim 5, characterized in that, The filter screen (7) has an installation port (701), and the filter screen (7) is installed in the mounting column (201) through the installation port (701) and is located below the grinding table (6).

7. A high hydration rate cement grading and grinding system according to claim 6, characterized in that, The grinding barrel (2) has a discharge slope (202) at its bottom, and the lowest point of the discharge slope (202) has a first discharge port (203) for discharging material.

8. A high hydration rate cement grading and grinding system according to claim 6, characterized in that, The grinding table (6) also includes a vibrating ball (601). Multiple springs are vertically arranged along the circumference of the lower end face of the grinding table (6). The lower end of the spring is connected to the vibrating ball (601) that abuts against the surface of the filter screen (7).

9. A high hydration rate cement grading and grinding system according to claim 1, characterized in that, The grinding roller (5) includes a roller body (501). Multiple roller bodies (501) are arranged in sequence along the circumferential direction at the lower end of the grinding roller (5). The lower surfaces of the multiple roller bodies (501) abut against the upper surface of the grinding table (6).

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