Cement activator high-efficiency grinding device

Abstract

The utility model discloses a cement activator high -efficient powder grinding device, including casing, inlet pipe, rotary mill disc, pressure grinding roller, swing adjusting mechanism, cyclone separator and hot -blast pipe, rotary drive mechanism is used for driving rotary mill disc rotation, inlet pipe is used for conveying cement activator raw material to rotary mill disc, and multiple pressure grinding rollers are intervally arranged along the circumferential direction of rotary mill disc, and swing adjusting mechanism is connected with pressure grinding roller, and hot -blast pipe is used for conveying the hot air flow that flows upwards to the air ring, and cyclone separator is established above rotary mill disc, and the top of casing is equipped with the discharge gate, and the discharge gate is used for discharging the cement activator fine powder after separating, the utility model discloses through rotary mill disc and pressure grinding roller high -efficient mill cement activator raw material, swing adjusting mechanism can adjust the pressure tightness, and the powder grinding uniformity is promoted, and the hot air is taken into cyclone separator grading through the air ring and is brought into cyclone separator, and coarse particle falls back and continues to grind, and the finished product is discharged from the discharge gate, and the powder processing efficiency of material is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment, and in particular to a high-efficiency grinding equipment for cement activators. Background Technology

[0002] Cement activators are admixtures used to promote the early hydration reaction of cementitious materials. They mainly improve early strength and overall performance by activating potential active components. They are widely used in construction engineering. To ensure that the active components of cement activators can play a full role, the raw materials of cement activators usually need to be finely ground to meet specific particle size requirements, thereby achieving good dispersibility.

[0003] However, the existing grinding equipment has a single stress distribution in its pressure grinding structure, resulting in uneven pressure on the raw materials on the grinding disc. This affects the uniformity of the abrasive particle size and consequently the performance of the cement activator. In addition, the fine powder after grinding is usually filtered through a screen, but this method carries the risk of clogging and requires regular cleaning, making maintenance inconvenient. Furthermore, materials tend to accumulate in the bottom area of ​​traditional equipment, which affects the operating efficiency of the equipment and increases the cleaning burden.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-efficiency grinding device for cement activators that produces uniform abrasive and facilitates the collection of fine materials.

[0006] To achieve this objective, the present invention adopts the following technical solution: a high-efficiency grinding device for cement activator, comprising a shell, a feed pipe, a rotating grinding disc, a grinding roller, a swing adjustment mechanism, a cyclone separator, and a hot air pipe;

[0007] The rotating grinding disc is located inside the housing. A rotating drive mechanism is provided at the bottom of the rotating grinding disc. The rotating drive mechanism is used to drive the rotating grinding disc to rotate. The feed pipe is located on the side wall of the housing, and its discharge end is located above the rotating grinding disc. The feed pipe is used to feed cement activator raw materials to the rotating grinding disc.

[0008] Multiple grinding rollers are spaced apart along the circumference of the rotating grinding disc. The swing adjustment mechanism is connected to the grinding rollers and is used to adjust the swing angle of the grinding rollers so that the grinding rollers press against the rotating grinding disc.

[0009] The outer edge of the rotating grinding disc is provided with an air guide ring, and the hot air pipe is provided on the side wall of the housing at the lower end of the air guide ring. The hot air pipe is used to deliver upward-flowing hot air to the air guide ring. The cyclone separator is provided above the rotating grinding disc. The cyclone separator is used to perform gas-solid separation on the finely ground powder that rises with the hot air flow. The top of the housing is provided with a discharge port, which is used to discharge the separated cement activator fine powder.

[0010] In the above-mentioned high-efficiency grinding device for cement activator, the swing adjustment mechanism includes a fixed base, a swing arm, and a hydraulic push rod.

[0011] The fixed base is located on the side end of the housing. The middle part of the swing arm is hinged to the fixed base. One end of the swing arm is rotatably connected to the grinding roller, and the other end is connected to the movable end of the hydraulic push rod. The hydraulic push rod is used to drive the swing arm to swing to adjust the pressing force of the grinding roller.

[0012] In the above-mentioned high-efficiency grinding device for cement activator, the air guide ring is provided with several inclined partition plates along the circumference, and an air guide channel is formed between two adjacent partition plates.

[0013] Using the above technical solution, in the high-efficiency grinding device for cement activator, the bottom of the shell is provided with an annular receiving plate, the annular receiving plate is provided with a discharge channel, and a receiving chamber is formed between the annular receiving plate and the air guide ring;

[0014] The rotating grinding disc has a connecting column at its bottom, and a scraper is provided on the side wall of the connecting column. The bottom of the scraper abuts against the annular receiving plate. The scraper is used to scrape the material accumulated in the receiving chamber toward the discharge channel as the rotating grinding disc rotates.

[0015] In the above-mentioned high-efficiency grinding device for cement activator, the rotating grinding disc is provided with a wear-resistant liner, which is made of chromium alloy material.

[0016] In the above-mentioned high-efficiency grinding device for cement activator, a wear-resistant roller sleeve is provided on the surface of the grinding roller.

[0017] In the above-mentioned high-efficiency grinding device for cement activator, the outer wall of the shell is provided with a slot for the grinding roller to extend into, and a flexible sealing cover is provided on the slot.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention achieves efficient grinding of cement activator raw materials through the combined action of a rotating grinding disc and a grinding roller. The oscillating adjustment mechanism can adjust the pressing force of the grinding roller, thereby improving the uniformity of grinding. When the hot air pipe passes through the air guide ring, it can form an upward airflow to carry the fine powder into the cyclone separator for gas-solid separation. Coarse particles fall back onto the rotating grinding disc for further grinding, and the finished fine powder is discharged in time through the discharge port at the top of the shell. In this way, the grinding efficiency and classification accuracy can be effectively improved, and over-grinding and powder blockage can be avoided. The overall structure is compact, the operation is stable, and the grinding efficiency of materials is effectively improved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the cyclone separator structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the grinding roller installation structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation structure of the swing adjustment mechanism of this utility model;

[0026] Figure 5 This is a schematic diagram of the rotating grinding disc structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the air guide ring structure of this utility model. Detailed Implementation

[0028] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 6As shown, this utility model embodiment provides a high-efficiency grinding device for cement activator, including a housing 1, a feed pipe 2, a rotating grinding disc 3, grinding rollers 4, a swing adjustment mechanism 5, a cyclone separator 6, and a hot air pipe 7. The rotating grinding disc 3 is located inside the housing 1, and a rotating drive mechanism 31 is provided at the bottom of the rotating grinding disc 3. The rotating drive mechanism 31 is used to drive the rotating grinding disc 3 to rotate. The feed pipe 2 is located on the side wall of the housing 1, and its discharge end is located above the rotating grinding disc 3. The feed pipe 2 is used to feed cement activator raw materials to the rotating grinding disc 3. Multiple grinding rollers 4 are spaced apart along the circumference of the rotating grinding disc 3. The swing adjustment mechanism 5 is... The joint mechanism 5 is connected to the grinding roller 4. The swing adjustment mechanism 5 is used to adjust the swing angle of the grinding roller 4 so that the grinding roller 4 presses against the rotating grinding disc 3. The outer edge of the rotating grinding disc 3 is provided with an air guide ring 32. The hot air pipe 7 is provided on the side wall of the housing 1 at the lower end of the air guide ring 32. The hot air pipe 7 is used to deliver upward flowing hot air to the air guide ring 32. The cyclone separator 6 is provided above the rotating grinding disc 3. The cyclone separator 6 is used to perform gas-solid separation on the finely ground powder that rises with the hot air flow. The top of the housing 1 is provided with a discharge port 11. The discharge port 11 is used to discharge the separated cement activator fine powder. The cement activator raw material can be conveyed to the rotating grinding disc 3 through the feed pipe 2. The rotating drive mechanism 31 can drive the grinding disc to rotate, causing the material to diffuse outward under the action of centrifugal force. At the same time, the grinding roller 4 is pressed onto the rotating grinding disc 3 under the action of the swing adjustment mechanism 5, thereby rolling and grinding the material in different areas. The fine powder generated during the grinding process is pushed by the hot air flow supplied by the hot air pipe 7 and flows upward through the air guide ring 32 to form a stable vertical airflow channel, which carries the fine powder to the cyclone separator 6 above for gas-solid separation, thereby achieving effective collection of fine powder. The coarser particles fall back onto the rotating grinding disc 3 under the action of gravity to continue grinding. The top of the shell 1 is provided with a discharge port 11, which can discharge the separated finished fine powder in a timely manner, making collection convenient and effectively avoiding over-grinding or clogging. It should be noted that the cyclone separator 6 is a disclosed prior art, and its structure and working principle will not be described in detail in this embodiment.

[0032] like Figure 3 and Figure 4As shown, the swing adjustment mechanism 5 further includes a fixed base 51, a swing arm 52, and a hydraulic push rod 53. The fixed base 51 is located at the side end of the housing 1. The middle part of the swing arm 52 is hinged to the fixed base 51, and one end of the swing arm 52 is rotatably connected to the grinding roller 4, while the other end is connected to the movable end of the hydraulic push rod 53. The hydraulic push rod 53 is used to drive the swing arm 52 to swing and adjust the clamping force of the grinding roller 4. By applying a thrust through the hydraulic push rod 53, the swing arm 52 swings around the hinge point, thereby driving the grinding roller 4 to press down or lift up appropriately, thus adjusting the clamping force on the material. This ensures that the grinding roller 4 always acts on the surface of the rotating grinding disc 3 with appropriate pressure, avoiding insufficient clamping force from affecting the grinding effect.

[0033] like Figure 5 and Figure 6 As shown, further, the air guide ring 32 is provided with several inclined partition plates 321 along the circumference, and an air guide channel 322 is formed between two adjacent partition plates 321. Hot air is sent from the bottom of the housing 1 through the hot air pipe 7 and first enters the area of ​​the air guide ring 32. Since the partition plates 321 are arranged at an inclination, the hot air flow is diverted and rises at a preset angle under the guidance of the partition plates 321, thereby increasing the turbulence intensity of the airflow in the air guide ring 32, causing the hot air to form a certain rotational trend in the horizontal direction, effectively slowing down sudden changes in wind speed, preventing the occurrence of local dead airflow, and forming multiple evenly distributed and directional upward airflows through the air guide channel 322, and causing the fine powder escaping above the rotating grinding disc 3 to enter the upper cyclone separator 6 with the airflow for gas-solid separation.

[0034] like Figure 6 As shown, further, the bottom of the housing 1 is provided with an annular receiving plate 12, and the annular receiving plate 12 is provided with a discharge channel 120. A receiving chamber is formed between the annular receiving plate 12 and the air guide ring 32. The bottom of the rotating grinding disc 3 is provided with a connecting column 33, and the side wall of the connecting column 33 is provided with a scraper 34. The bottom of the scraper 34 abuts against the annular receiving plate 12. The scraper 34 is used to scrape the material accumulated in the receiving chamber toward the discharge channel 120 as the rotating grinding disc 3 rotates. Some coarse particles that are not carried upward by the airflow or have fallen back will settle into the receiving chamber. The scraper 34 rotates integrally with the rotating grinding disc 3, and its bottom is in close contact with the surface of the annular receiving plate 12. Thus, during the rotation, the material accumulated in the receiving chamber can be pushed and scraped to the discharge channel 120, thereby realizing the automatic discharge of residual material, reducing the frequency of manual intervention, extending the stable operation cycle of the equipment, and effectively improving the operational reliability of the grinding device.

[0035] like Figure 5As shown, the rotating grinding disc 3 is further provided with a wear-resistant liner 35, which is made of chromium alloy. Cement activator raw materials typically have a certain hardness, and the interaction between the rotating grinding disc 3 and the grinding roller 4 will generate friction and impact on the surface of the rotating grinding disc 3. By installing a replaceable wear-resistant liner 35 on the rotating grinding disc 3, the liner 35 can be replaced individually after damage, facilitating maintenance.

[0036] like Figure 4 As shown, the surface of the grinding roller 4 is further fitted with a wear-resistant roller sleeve 41. The grinding roller 4 will wear during the grinding process, and the wear-resistant roller sleeve 41, as a detachable component, can be easily replaced after local wear, avoiding the scrapping of the entire roller body, thereby reducing maintenance costs.

[0037] like Figure 1 As shown, furthermore, the outer wall of the housing 1 is provided with a slot 10 for the grinding roller 4 to extend into, and a flexible sealing cover (not shown) is provided on the slot 10. By providing a flexible sealing cover at the slot 10, dynamic sealing of the slot 10 can be achieved while ensuring the normal swing adjustment of the grinding roller 4. The flexible sealing cover is made of an elastic material with excellent flexibility, high temperature resistance, and wear resistance, and can follow the movement of the grinding roller 4 to fit the gap between the housing 1 and the grinding roller 4, thereby effectively preventing the leakage of dust and hot air inside the housing 1.

[0038] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency grinding device for cement activator, characterized in that, Includes a housing, feed pipe, rotating grinding disc, grinding roller, swing adjustment mechanism, cyclone separator, and hot air pipe; The rotating grinding disc is located inside the housing. A rotating drive mechanism is provided at the bottom of the rotating grinding disc. The rotating drive mechanism is used to drive the rotating grinding disc to rotate. The feed pipe is located on the side wall of the housing, and its discharge end is located above the rotating grinding disc. The feed pipe is used to feed cement activator raw materials to the rotating grinding disc. Multiple grinding rollers are spaced apart along the circumference of the rotating grinding disc. The swing adjustment mechanism is connected to the grinding rollers and is used to adjust the swing angle of the grinding rollers so that the grinding rollers press against the rotating grinding disc. The rotating grinding disc is provided with an air guide ring on its outer edge. The hot air pipe is located on the side wall of the housing at the lower end of the air guide ring. The hot air pipe is used to deliver upward-flowing hot air to the air guide ring. The cyclone separator is located above the rotating grinding disc. The cyclone separator is used to perform gas-solid separation on the finely ground powder that rises with the hot air flow. The top of the housing is provided with a discharge port, which is used to discharge the separated cement activator fine powder.

2. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The swing adjustment mechanism includes a fixed base, a swing arm, and a hydraulic push rod; The fixed base is located on the side end of the housing. The middle part of the swing arm is hinged to the fixed base. One end of the swing arm is rotatably connected to the grinding roller, and the other end is connected to the movable end of the hydraulic push rod. The hydraulic push rod is used to drive the swing arm to swing to adjust the pressing force of the grinding roller.

3. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The air guide ring is provided with several inclined partition plates along the circumference, and an air guide channel is formed between two adjacent partition plates.

4. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The bottom of the housing is provided with an annular receiving plate, the annular receiving plate is provided with a discharge channel, and a receiving chamber is formed between the annular receiving plate and the air guide ring; The rotating grinding disc has a connecting column at its bottom, and a scraper is provided on the side wall of the connecting column. The bottom of the scraper abuts against the annular receiving plate. The scraper is used to scrape the material accumulated in the receiving chamber toward the discharge channel as the rotating grinding disc rotates.

5. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The rotating grinding disc is equipped with a wear-resistant liner, which is made of chromium alloy material.

6. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The surface of the grinding roller is fitted with a wear-resistant roller sleeve.

7. The high-efficiency grinding device for cement activator according to claim 1, characterized in that, The outer wall of the housing is provided with a slot for the grinding roller to extend into, and a flexible sealing cover is provided on the slot.

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