Cement grinding device for cement production

Abstract

The utility model relates to cement production equipment technical field discloses a cement grinding device for cement production, including base, feed pipe, mill, fixedly connected with the support frame of base top left side and anti -blocking mechanism, the support frame top is fixedly connected with the feed inlet, the feed pipe is connected with the feed inlet bottom end, the feed pipe bottom end is connected with the feeding pipe, the mill rotation is connected with the base top, the feeding pipe right end rotation is connected with the mill left end, the mill right end is connected with the discharge pipe, wherein, be provided with anti -blocking mechanism on the feed inlet, anti -blocking mechanism includes the stirring motor fixedly connected with the feed inlet top, the utility model discloses through gathering together the scraper and the helical propulsion blade and solve the problem that the feeding is easy to block, through the curved flow guide pipe and quick -release structure realizes effective dust control and the effect that convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of cement production equipment technology, and in particular to a cement grinding device for cement production. Background Technology

[0002] In the cement production process, grinding equipment is needed to grind cement raw materials. The raw materials are transported to the inside of the mill through the feed hopper and conveying pipe. In order to gather the material, the feed hopper often adopts a conical structure that is wider at the top and narrower at the bottom.

[0003] However, cement raw materials have a certain degree of viscosity and moisture. When passing through the conical feed hopper and narrow conveying pipe, the raw materials will adhere to the inner wall of the feed hopper or accumulate at the inlet of the conveying pipe. As the accumulation increases, the raw materials will form caking or bridging at the bottom of the feed hopper, which will prevent the raw materials from entering the mill smoothly, thus causing the grinding operation to be interrupted. This seriously reduces the continuity and efficiency of cement production. The existing cement grinding equipment feed structure lacks an effective active cleaning and forced conveying mechanism, which cannot solve the problem of feed channel blockage.

[0004] Therefore, this utility model proposes a cement grinding device for cement production to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing cement grinding equipment for cement production, such as the easy accumulation and caking of raw materials at the bottom of the feed hopper and the easy blockage of the conveying channel, which leads to poor production continuity and seriously affects grinding efficiency, as well as the problems of easy dust diffusion and difficulty in cleaning and maintaining the discharge pipeline during the discharge process, this utility model aims to provide a cement grinding device for cement production with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a cement grinding device for cement production, including: a base, a conveying pipe, a mill, a support frame fixedly connected to the top left side of the base, and an anti-blocking mechanism. A feed hopper is fixedly connected to the top of the support frame, the conveying pipe is connected to the bottom end of the feed hopper, and a feeding pipe is connected to the bottom end of the conveying pipe. The mill is rotatably connected to the top of the base, the right end of the feeding pipe is rotatably connected to the left end of the mill, and a discharge pipe is connected to the right end of the mill.

[0007] The feed hopper is equipped with an anti-blocking mechanism, which includes a stirring motor fixedly connected to the top of the feed hopper. The output end of the stirring motor is fixedly connected to a rotating shaft, which extends into the feed hopper. A gathering scraper is connected to the outer wall of the rotating shaft, and the gathering scraper is rotatably connected to the bottom side of the inner wall of the feed hopper. A connecting shaft is fixedly connected to the bottom end of the rotating shaft, and the connecting shaft is disposed on the inner wall of the conveying pipe. A spiral propulsion blade is fixedly connected to the outer wall of the connecting shaft.

[0008] Preferably, a gear ring is fixedly connected to the outer wall of the mill, and a drive motor is fixedly connected to both the front and rear sides of the top of the base. A drive gear is fixedly connected to the output end of the drive motor, and both drive gears are meshed with the gear ring. By setting up dual drive motors, a more stable and powerful torque output can be provided, ensuring the stable operation of the mill under full load.

[0009] Preferably, multiple connecting plates 1 are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft, and multiple connecting plates 2 are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft. One end of each connecting plate 1 and connecting plate 2 is fixedly connected to the corresponding gathering scraper. The arrangement of connecting plates 1 and connecting plates 2 can not only enhance the structural rigidity of the gathering scraper, but also ensure that the rotational torque of the rotating shaft can be evenly transmitted to the gathering scraper.

[0010] Preferably, a sealed bearing seat is rotatably connected to the middle of the outer wall of the rotating shaft. The front and rear ends of the sealed bearing seat are respectively fixedly connected to the front and rear sides of the inner wall of the feed hopper. The setting of the sealed bearing seat effectively solves the problem of radial runout caused by the slender rotating shaft when rotating at high speed, and at the same time seals the position through which the rotating shaft passes, preventing dust from overflowing or entering the bearing.

[0011] Preferably, the gathering scraper is designed with an inclination, and the bottom of the gathering scraper is attached to the bottom side of the inner wall of the feed hopper. The inclination and attachment design can get as close as possible to the inner wall of the feed hopper, thoroughly scrape off the attached raw materials and gather them to the center, eliminate dead corners and improve cleaning efficiency.

[0012] Preferably, the discharge pipe is provided with a flow guiding mechanism, which includes a flow guiding pipe slidably connected to the inner wall of the discharge pipe. The flow guiding pipe has a curved design. The curved design of the flow guiding pipe can effectively buffer the material flow rate and change the flow direction, preventing the material from being sprayed directly from the outlet, thereby significantly reducing the diffusion of dust into the surrounding environment.

[0013] Preferably, the top left end of the guide pipe is provided with wedge-shaped grooves on both the front and rear sides. The inner wall of the wedge-shaped groove is inclined. The design of the wedge-shaped groove provides a key fitting space for subsequent compression and locking, and reliable fixation is achieved by utilizing the principle of force amplification by the inclined plane.

[0014] Preferably, the inner wall of the discharge pipe is threaded with threaded shafts on both the front and rear sides. One end of the threaded shaft extends into the interior of the discharge pipe. The threaded shaft provides a means to convert rotational motion into linear driving force, allowing the operator to control the movement of the internal mechanism from the outside.

[0015] Preferably, each of the two threaded shafts is rotatably connected to an extrusion block at one end inside the discharge pipe. The two extrusion blocks are slidably connected to the front and rear sides of the inner wall of the discharge pipe. The extrusion blocks, through their cooperation with the wedge groove, convert the horizontal thrust into the vertical locking force, thereby enabling the rapid installation and disassembly of the guide pipe inside the discharge pipe and greatly facilitating subsequent cleaning and maintenance.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting an anti-blocking mechanism, uses a stirring motor to drive the rotating shaft to rotate, which in turn drives the gathering scraper and the spiral propulsion blade to rotate synchronously. This solves the problems of cement raw materials easily accumulating and bridging at the bottom of the feed hopper and easily getting blocked inside the conveying pipe in the prior art. It achieves the effect of using the gathering scraper to scrape and gather the raw materials and using the spiral propulsion blade to forcefully unblock and feed them, ensuring that the raw materials can continuously and smoothly enter the mill for grinding, thus improving production efficiency.

[0018] 2. This utility model, by setting a flow guiding mechanism, adopting a curved flow guiding pipe, and cooperating with a locking structure composed of a wedge groove, a threaded shaft, and an extrusion block, solves the problems in the prior art where direct discharge from the discharge pipe easily leads to dust spreading and causing pollution, and the discharge components are not easy to disassemble and clean after being fixed. It achieves the effect of effectively guiding the flow of materials and buffering the flow rate to reduce dust rising. At the same time, the wedge extrusion principle is used to realize the rapid fixing and disassembly of the flow guiding pipe inside the discharge pipe, which greatly facilitates the subsequent maintenance and cleaning of the cement grinding device. Attached Figure Description

[0019] Figure 1 This is a perspective view of a cement grinding device for cement production proposed in this utility model.

[0020] Figure 2 This is a cross-sectional view of the feed hopper of a cement grinding device for cement production proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of an anti-clogging mechanism for a cement grinding device used in cement production, as proposed in this utility model.

[0022] Figure 4 This is a split view of the flow guiding mechanism of a cement grinding device for cement production proposed in this utility model.

[0023] Legend:

[0024] 1. Base; 2. Anti-blocking mechanism; 21. Stirring motor; 22. Rotating shaft; 23. Connecting plate one; 24. Connecting plate two; 25. Gathering scraper; 26. Connecting shaft; 27. Spiral propulsion blade; 28. Sealed bearing seat; 3. Flow guiding mechanism; 31. Flow guiding pipe; 32. Wedge groove; 33. Threaded shaft; 34. Extrusion block; 4. Support frame; 5. Feed hopper; 6. Mill; 7. Gear ring; 8. Drive motor; 9. Drive gear; 10. Feeding pipe; 11. Conveying pipe; 12. Discharge pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Example:

[0027] Please refer to Figures 1 to 4 This utility model provides a cement grinding device for cement production, which aims to solve the problems of easy clogging of the feed, difficulty in controlling the discharge dust, and inconvenience in maintaining the 12 discharge pipes in existing cement production equipment.

[0028] Please refer to Figure 1 and Figure 2 The cement grinding device for cement production includes a base 1 and a support frame 4 fixedly connected to the top left side of the base 1. The base 1 has a cylindrical design on top and an inverted conical design at the bottom. The base 1 provides a stable support foundation for the entire device. A feed hopper 5 is fixedly connected to the top of the support frame 4. The feed hopper 5 has a large opening at the top and gradually narrows at the bottom. The feed hopper 5 is used to receive cement raw materials and guide them to fall. A conveying pipe 11 is connected to the bottom of the feed hopper 5. The conveying pipe 11 is used to convey raw materials downward. A feeding pipe 10 is connected to the bottom of the conveying pipe 11. The feeding pipe 10 is used to guide the raw materials into the mill 6. The mill 6 is rotatably connected to the top of the base 1. The mill 6 is used to impact and grind the raw materials that enter it. The right end of the feeding pipe 10 is rotatably connected to the left end of the mill 6. A discharge pipe 12 is connected to the right end of the mill 6. The discharge pipe 12 is used to discharge the ground material.

[0029] An anti-blocking mechanism 2 is provided on the feed hopper 5. The anti-blocking mechanism 2 is used to prevent the raw material from being blocked at the bottom of the feed hopper 5 and in the conveying pipe 11. The anti-blocking mechanism 2 includes a stirring motor 21 fixedly connected to the top of the feed hopper 5. The stirring motor 21 is used to provide the power required for the operation of the anti-blocking mechanism 2. A rotating shaft 22 is fixedly connected to the output end of the stirring motor 21. The rotating shaft 22 extends into the inside of the feed hopper 5. A gathering scraper 25 is connected to the outer wall of the rotating shaft 22. The gathering scraper 25 is used to scrape the raw material at the bottom of the inner wall of the feed hopper 5 and gather it to the center. The gathering scraper 25 is rotatably connected to the bottom side of the inner wall of the feed hopper 5. A connecting shaft 26 is fixedly connected to the bottom end of the rotating shaft 22. The connecting shaft 26 is set in the inner wall of the conveying pipe 11. A spiral propulsion blade 27 is fixedly connected to the outer wall of the connecting shaft 26. The spiral propulsion blade 27 is used to force the spiral propulsion of the raw material in the conveying pipe 11.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4 A gear ring 7 is fixedly connected to the outer wall of the mill 6. A drive motor 8 is fixedly connected to the front and rear sides of the top of the base 1. The drive motor 8 provides power for the rotation of the mill 6. A drive gear 9 is fixedly connected to the output end of the drive motor 8. Both drive gears 9 mesh with the gear ring 7. This dual-motor drive structure provides a smoother torque output. Multiple connecting plates 1 23 are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft 22. Multiple connecting plates 24 are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft 22. Connecting plates 1 23 and 24... One end of 4 is fixedly connected to the corresponding gathering scraper 25. Connecting plate 1 23 and connecting plate 24 are used to stably transmit the rotational torque of the rotating shaft 22 to the gathering scraper 25, and at the same time enhance the structural strength of the gathering scraper 25. A sealed bearing seat 28 is rotatably connected to the middle of the outer wall of the rotating shaft 22. The front and rear ends of the sealed bearing seat 28 are fixedly connected to the front and rear sides of the inner wall of the feed hopper 5, respectively. The sealed bearing seat 28 is used to provide intermediate support for the slender rotating shaft 22, prevent shaking during rotation, and seal the connection between the rotating shaft 22 and the feed hopper 5.

[0031] The converging scraper 25 is designed with an inclination, and the bottom of the converging scraper 25 is attached to the bottom side of the inner wall of the feed hopper 5. This inclination and attachment design can ensure that the raw material at the bottom of the feed hopper 5 is completely scraped up and conveyed to the center, preventing the material from sticking to the wall and accumulating. The discharge pipe 12 is equipped with a flow guiding mechanism 3. The flow guiding mechanism 3 is used to guide the grinding material to be discharged in an orderly manner and facilitate cleaning and maintenance. The flow guiding mechanism 3 includes a flow guiding pipe 31 that is slidably connected to the inner wall of the discharge pipe 12. The flow guiding pipe 31 is designed with a bend. The bend design can buffer the material flow rate and change the flow direction, reducing the direct diffusion of dust to the outside.

[0032] The top left end of the guide pipe 31 is provided with wedge-shaped grooves 32 on both the front and rear sides. The inner wall of the wedge-shaped grooves 32 is inclined. The inner wall of the discharge pipe 12 is threaded with threaded shafts 33 on both the front and rear sides. One end of the threaded shafts 33 extends into the discharge pipe 12. The two ends of the threaded shafts 33 located inside the discharge pipe 12 are rotatably connected with extrusion blocks 34. The two extrusion blocks 34 are slidably connected to the front and rear sides of the inner wall of the discharge pipe 12. The extrusion blocks 34 are used to move inward under the push of the threaded shafts 33. The side of the extrusion block 34 abuts against the inner wall of the wedge-shaped grooves 32. Through the cooperation of the wedge-shaped surfaces, the vertical extrusion force is converted into a locking force on the guide pipe 31, so as to realize the quick assembly and disassembly and fixation of the guide pipe 31 in the discharge pipe 12.

[0033] In a preferred embodiment, the output end of the drive motor 8 is connected to the drive gear 9 via a reducer. The reducer is used to reduce the speed and increase the output torque, ensuring that the drive gear 9 can stably drive the mill 6, which is fully loaded with steel balls and raw materials, to rotate. At the same time, the inverted conical design at the bottom of the base 1 can lower the center of gravity, and together with the straight cylindrical design at the top, it can maximize the use of the bottom space for equipment installation or maintenance.

[0034] As a preferred embodiment, the gathering scraper 25 is made of wear-resistant alloy steel, which has the characteristics of high strength and high hardness, and can effectively resist the wear of particles in cement raw materials, thus extending the service life of the gathering scraper 25. In addition, the surface of the spiral propulsion blade 27 is coated with an anti-corrosion coating to prevent moisture or chemical components in the raw materials from corroding the blade.

[0035] In a preferred embodiment, a sealing gasket is provided between the contact surface of the extrusion block 34 and the inner wall of the discharge pipe 12. The sealing gasket is used to provide auxiliary sealing during the sliding process of the extrusion block 34 to prevent fine dust from entering the mating gap between the extrusion block 34 and the discharge pipe 12 and causing jamming. In addition, the bending angle of the guide pipe 31 is designed to be between 120 degrees and 150 degrees. The angle range can ensure the smooth discharge of materials while minimizing dust rising.

[0036] As a preferred embodiment, an observation window is provided on the side wall of the feed hopper 5. The observation window is inlaid with high-strength tempered glass. The operator can intuitively monitor the accumulation height of the raw materials and the operating status of the anti-blocking mechanism 2 through the observation window, so as to adjust the feeding speed or perform equipment maintenance in a timely manner.

[0037] Working principle: When using a cement grinding device for cement production, the drive motor 8 is started first. The output end of the drive motor 8 rotates, driving the drive gear 9 to rotate. The two drive gears 9 rotate together, driving the gear ring 7 and the mill 6 to rotate. The rotation of the mill 6 causes the grinding media inside to be lifted and thrown by the liner plate, impacting and grinding the material. At the same time as the mill 6 starts, the stirring motor 21 at the top of the feed hopper 5 is started. The output end of the stirring motor 21 rotates, driving the rotating shaft 22 to rotate. The rotation of the rotating shaft 22 drives multiple gathering scrapers 25 to rotate through the connecting plate 1 23 and the connecting plate 24. The rotation of the gathering scrapers 25 scrapes and gathers the cement raw material attached to or adhering to the bottom of the inner wall of the feed hopper 5, guiding the cement raw material to gather to the bottom of the inner wall of the feed hopper 5, that is, to gather and transport to the conveying pipe 11 connected to the bottom of the feed hopper 5.

[0038] The rotation of the rotating shaft 22 drives the connecting shaft 26 to rotate, and the rotation of the connecting shaft 26 drives the spiral propulsion blades 27 to rotate on the inner wall of the conveying pipe 11. The rotation of the spiral propulsion blades 27 clears the cement raw materials gathered by multiple gathering scrapers 25 and forces them to be discharged into the feeding pipe 10. The raw materials are then transported back to the mill 6 for grinding by the feeding pipe 10. During this process, the sealed bearing seat 28 rotatably connected to the outer wall of the rotating shaft 22 plays a role in stabilizing the rotation of the rotating shaft 22, the connecting plate 23, and the connecting shaft 26. Through the cooperation of various components in the anti-blocking mechanism 2, it is ensured that the feed hopper 5 and the conveying pipe 11 will not be blocked by cement raw materials, thus ensuring the continuity of production.

[0039] When it is necessary to guide the cement powder discharged along the discharge pipe 12 and prevent dust diffusion, the guiding mechanism 3 comes into play. The operator inserts the guiding pipe 31 along the inner wall of the discharge pipe 12, and then tightens the two threaded shafts 33. The threaded shafts 33 rotate on the inner wall of the discharge pipe 12, pushing the corresponding two extrusion blocks 34 to slide inward along the inner wall of the discharge pipe 12 until the extrusion blocks 34 are stuck in the inner wall of the wedge groove 32 on the guiding pipe 31. The two extrusion blocks 34 extrude the inner wall of the wedge groove 32, so that the guiding pipe 31 is firmly fixed in the inner wall of the discharge pipe 12. The discharge pipe 12 can guide the cement powder to the next process through the curved guiding pipe 31. At the same time, the curved design avoids the severe dust pollution caused by cement powder falling directly from the outlet of the discharge pipe 12. When it is necessary to clean or replace the guiding pipe 31, the extrusion blocks 34 can be quickly disassembled by rotating the threaded shaft 33 in the opposite direction.

Claims

1. A cement grinding device for cement production, comprising: A base (1) is fixedly connected to a support frame (4) on the top left side of the base (1). A feed hopper (5) is fixedly connected to the top of the support frame (4). An anti-blocking mechanism (2) is provided in the middle of the feed hopper (5). A conveying pipe (11) is connected to the bottom end of the feed hopper (5). A feeding pipe (10) is connected to the bottom end of the conveying pipe (11). A mill (6) is rotatably connected to the top of the base (1). The right end of the feeding pipe (10) is rotatably connected to the left end of the mill (6). A discharge pipe (12) is connected to the right end of the mill (6). A flow guiding mechanism (3) is provided on the discharge pipe (12). The anti-blocking mechanism (2) is characterized in that it includes a stirring motor (21), which is fixedly connected to the top of the feed hopper (5). The output end of the stirring motor (21) is fixedly connected to a rotating shaft (22). A gathering scraper (25) is connected to the outer wall of the rotating shaft (22). The gathering scraper (25) is rotatably connected to the bottom side of the inner wall of the feed hopper (5). A connecting shaft (26) is fixedly connected to the bottom end of the rotating shaft (22). A spiral propulsion blade (27) is fixedly connected to the outer wall of the connecting shaft (26).

2. The cement grinding device for cement production according to claim 1, characterized in that, A gear ring (7) is fixedly connected to the outer wall of the mill (6), and a drive motor (8) is fixedly connected to the front and rear sides of the top of the base (1). A drive gear (9) is fixedly connected to the output end of the drive motor (8), and both drive gears (9) are meshed with the gear ring (7).

3. The cement grinding device for cement production according to claim 1, characterized in that, Multiple connecting plates (23) are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft (22), and multiple connecting plates (24) are fixedly connected at equal intervals around the bottom of the outer wall of the rotating shaft (22). One end of the connecting plate (23) and the connecting plate (24) are respectively fixedly connected to the corresponding gathering scraper (25).

4. A cement grinding device for cement production according to claim 1, characterized in that, A sealed bearing seat (28) is rotatably connected to the middle of the outer wall of the rotating shaft (22), and the front and rear ends of the sealed bearing seat (28) are respectively fixedly connected to the front and rear sides of the inner wall of the feed hopper (5).

5. A cement grinding device for cement production according to claim 1, characterized in that, The gathering scraper (25) is designed in an inclined shape, and the bottom of the gathering scraper (25) is attached to the bottom side of the inner wall of the feed hopper (5).

6. A cement grinding device for cement production according to claim 1, characterized in that, The flow guiding mechanism (3) includes a flow guiding pipe (31), which is slidably connected to the inner wall of the discharge pipe (12), and the flow guiding pipe (31) is designed in a curved shape.

7. A cement grinding device for cement production according to claim 6, characterized in that, The top left end of the guide pipe (31) is provided with wedge-shaped grooves (32) on both the front and rear sides, and the inner wall of the wedge-shaped grooves (32) is inclined.

8. A cement grinding device for cement production according to claim 7, characterized in that, The inner wall of the discharge pipe (12) is threaded with a threaded shaft (33) on both the front and rear sides, and one end of the threaded shaft (33) extends into the interior of the discharge pipe (12).

9. A cement grinding device for cement production according to claim 8, characterized in that, Both of the threaded shafts (33) are rotatably connected to an extrusion block (34) at one end inside the discharge pipe (12), and the two extrusion blocks (34) are slidably connected to the front and rear sides of the inner wall of the discharge pipe (12).

10. A cement grinding device for cement production according to claim 9, characterized in that, The side of the extrusion block (34) abuts against the inner wall of the wedge groove (32), and the extrusion block (34) is pushed into the wedge groove (32) by rotating the threaded shaft (33).

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