Cement grinding aid feeding system
By designing the cement abrasive feeding system, using filter mechanism, stirring blades and gear pumps, the problems of solid cement abrasive abrasive abrasive aggregation and insufficient combination with liquid are solved, and the effects of uniform distribution of cement particles, improved fluidity and improved grinding efficiency are achieved.
Patent Information
- Application Number
- CN202421429857.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the prior art, solid cement agitator will form agglomeration after being placed for a long time, resulting in a decrease in cement grinding efficiency and insufficient combination with liquid cement agitator, resulting in uneven distribution of cement particles, reduced fluidity, and affecting cement performance.
A cement abrasive feeding system is designed, including a filtration mechanism, agitating blades and a gear pump. The filtering mechanism screens solid cement abrasive agent to prevent agglomeration from entering; the gear pump quantitatively inputs liquid cement abrasive agent; the stirring blades drive high-speed stirring through the rotating shaft to ensure that the solid and liquid abrasive agent are fully mixed.
Through this system, the particles of cement aids are more uniform during the grinding process, the fluidity is improved, and the performance of cement is improved. At the same time, the clumping and blockage are reduced, and the grinding efficiency is improved.
Smart Images
Figure CN222918603U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding aid production equipment, in particular to a cement grinding aid feeding system. Background Technique
[0002] Cement grinding aids are chemical additives that improve the grinding effect and performance of cement. They can significantly increase the hourly output of cement, the strength of cement at each age, and improve its fluidity. Cement grinding aids can greatly reduce the electrostatic adsorption and ball coating phenomenon formed during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of cement, improve the grinding effect of the mill and the selection efficiency of the separator, thereby reducing the grinding energy consumption. The cement produced using grinding aids has a lower tendency of compaction and agglomeration, which is beneficial to the loading and unloading of cement and can reduce the wall hanging phenomenon in the cement silo. As a chemical additive, grinding aids can improve the particle size distribution of cement and stimulate the hydration power, thereby increasing the early strength and late strength of cement.
[0003] The existing technology has the following problems: when adding solid cement grinding aids, due to the fact that solid cement grinding aids will produce large lumps during long-term storage, after the lumps enter the cement, the cement grinding efficiency will be reduced; at the same time, the solid cement grinding aids after caking are not fully combined with the liquid cement grinding aids, resulting in uneven particle size distribution of the cement, reduced fluidity, and affecting the performance of the cement. Content of the Utility Model
[0004] To solve the above technical problems, a cement grinding aid feeding system is provided, which solves the problems of the current reduction in cement grinding efficiency and uneven particle size distribution of cement.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A cement grinding aid feeding system includes a sleeve. A rotating shaft is rotatably installed at the center of the top of the inner wall of the sleeve. A plurality of stirring blades are fixedly installed on the outer surface of the rotating shaft. The plurality of stirring blades are circumferentially distributed about the center line of the rotating shaft. An inlet groove is opened at the top of the inner wall of the sleeve. A filtering mechanism is fixedly installed on the inner wall of the inlet groove. A feed pipe is fixedly installed on the upper surface of the sleeve corresponding to the filtering mechanism. The feed pipe is communicated with the sleeve. A gear pump is fixedly installed inside the feed pipe. A discharge mechanism is fixedly installed on the bottom surface of the sleeve. A support frame is fixedly installed on the bottom surface of the sleeve corresponding to the discharge mechanism.
[0007] Preferably, the filtering mechanism includes a main body. A filtering cavity is formed inside the main body. A plurality of through grooves are formed in the bottom surface of the filtering cavity. The plurality of through grooves are uniformly distributed on the bottom of the inner wall of the filtering cavity. Guide rails are fixedly installed on both sides of the inner wall of the filtering cavity. A filtering box is arranged inside the filtering cavity. Sliders are fixedly installed on both sides of the filtering box corresponding to the guide rails. The filtering box is slidably connected to the guide rails through the sliders. A cam is arranged between the bottom surface of the filtering box and the bottom of the inner wall of the filtering cavity. A rotating rod is rotatably installed on the inner wall of the filtering cavity corresponding to the cam. The rotating rod is fixedly connected to the cam.
[0008] Preferably, the gear pump includes a main board. A material conveying groove is formed inside the main board. A driving gear and a driven gear are rotatably installed on the inner wall of the material conveying groove. The driving gear and the driven gear are meshed. Both the driving gear and the driven gear are in contact with the inner wall of the material conveying groove.
[0009] Preferably, the discharging mechanism includes a discharging pipe. The discharging pipe is communicated with the sleeve. A fixing frame is fixedly installed on the inner wall of the discharging pipe. A transmission shaft is rotatably installed inside the fixing frame. Threaded blades are fixedly installed on the outer surface of the transmission shaft. The threaded blades are in contact with the inner wall of the discharging pipe.
[0010] Preferably, two telescopic rods are arranged on the upper surface of the main body corresponding to the filtering box. The two telescopic rods are symmetrically distributed with respect to the filtering cavity.
[0011] Preferably, a first motor is arranged above the sleeve corresponding to the rotating shaft. The rotating shaft penetrates through the sleeve and is fixedly connected to the output end of the first motor.
[0012] Preferably, a second motor is arranged outside the main board corresponding to the rotating rod. The rotating rod penetrates through the main board and is fixedly connected to the output end of the second motor.
[0013] Compared with the prior art, the advantages of the present utility model are as follows: By setting the filtering mechanism, stirring blades and gear pump, the filtering mechanism screens the solid cement grinding aid, so that the caked solid cement grinding aid cannot enter the sleeve. The gear pump quantitatively inputs the liquid cement grinding aid. The rotating shaft drives the stirring blades, so that the stirring blades stir the mixture of the solid cement grinding aid and the liquid cement grinding aid, making the combination of the solid cement grinding aid and the liquid cement grinding aid more sufficient. The stirred material enters the cement through the discharging groove, thereby making the particles of the cement more uniform during the grinding process and improving the fluidity, and further improving the performance of the cement. Since the filtering mechanism blocks the caked solid cement grinding aid from entering the sleeve, the solid cement grinding aid combined with the liquid cement grinding aid is in powder form, and the cement grinding aid entering the sleeve is in powder form, which greatly reduces the caking and blocking phenomena that may occur during the grinding process, and thus improves the cement grinding efficiency. Description of the Drawings
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;
[0015] Figure 2 This is an internal structural schematic diagram of the present utility model;
[0016] Figure 3 This is an internal structural schematic diagram of the filtering mechanism in the present utility model;
[0017] Figure 4 This is an internal structural schematic diagram of the gear pump in the present utility model;
[0018] Figure 5 This is an internal structural schematic diagram of the discharging mechanism in the present utility model.
[0019] The reference numerals in the figure are: 1, sleeve; 2, rotating shaft; 3, stirring blade; 4, feed trough; 5, filtering mechanism; 6, feed pipe; 7, gear pump; 8, discharging mechanism; 9, main body; 10, filtering cavity; 11, through slot; 12, guide rail; 13, filtering box; 14, slider; 15, cam; 16, rotating rod; 17, main board; 18, material conveying trough; 19, driving gear; 20, driven gear; 21, discharging pipe; 22, fixing frame; 23, transmission shaft; 24, threaded blade; 25, telescopic rod; 26, first motor; 27, second motor. Detailed implementation manners
[0020] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.
[0021] Refer to Figures 1-5As shown in the figure, a cement grinding aid feeding system includes a sleeve 1. At the center of the top of the inner wall of the sleeve 1, a rotating shaft 2 is rotatably installed. A plurality of stirring blades 3 are fixedly installed on the outer surface of the rotating shaft 2. The plurality of stirring blades 3 are circumferentially distributed about the center line of the rotating shaft 2. The rotating shaft 2 drives the stirring blades 3 to rotate at a high speed, and the stirring blades 3 stir the materials in the sleeve 1. The stirring blades 3 are L-shaped. The rotation and movement of the L-shaped stirring blades 3 can disperse and uniformly mix the materials, avoiding the situation of local accumulation or uneven mixing of the materials during the stirring process. An inlet groove 4 is opened at the top of the inner wall of the sleeve 1. A filtering mechanism 5 is fixedly installed on the inner wall of the inlet groove 4. The filtering mechanism 5 screens the solid cement grinding aid entering the sleeve 1, separating the lumps and powders in the solid cement grinding aid. A feed pipe 6 is fixedly installed on the upper surface of the sleeve 1 corresponding to the filtering mechanism 5. The feed pipe 6 is communicated with the sleeve 1. A gear pump 7 is fixedly installed inside the feed pipe 6. The gear pump 7 controls the amount of the liquid cement grinding aid entering the sleeve 1, so that the liquid cement grinding aid and the solid cement grinding aid reach a certain ratio. A discharge mechanism 8 is fixedly installed on the bottom surface of the sleeve 1. The discharge mechanism 8 controls the speed and amount of the materials leaving the equipment. A support frame is fixedly installed on the bottom surface of the sleeve 1 corresponding to the discharge mechanism 8.
[0022] As Figure 3 shown, the filtering mechanism 5 includes a main body 9. A filtering cavity 10 is opened inside the main body 9. A plurality of through grooves 11 are opened on the bottom surface of the filtering cavity 10. The plurality of through grooves 11 are uniformly distributed on the bottom of the inner wall of the filtering cavity 10. Guide rails 12 are fixedly installed on both sides of the inner wall of the filtering cavity 10. A filtering box 13 is arranged inside the filtering cavity 10. The solid cement grinding aid enters the filtering box 13. Sliders 14 are fixedly installed on both sides of the filtering box 13 corresponding to the guide rails 12. The filtering box 13 is slidably connected with the guide rails 12 through the sliders 14. A cam 15 is arranged between the bottom surface of the filtering box 13 and the bottom of the inner wall of the filtering cavity 10. A rotating rod 16 is rotatably installed on the inner wall of the filtering cavity 10 corresponding to the cam 15. The rotating rod 16 is fixedly connected with the cam 15. The rotating rod 16 rotates to make the cam 15 push the filtering box 13, causing the solid cement grinding aid to vibrate. The powdery solid cement grinding aid can enter the sleeve 1 through the filtering box 13 and the through grooves 11. Since a plurality of filtering holes with smaller sizes are opened on the bottom of the inner wall of the filtering box 13, the lumps in the solid cement grinding aid can be blocked in the filtering box 13.
[0023] As Figure 4As shown in the figure, the gear pump 7 includes a main board 17. An internal material conveying groove 18 is formed in the main board 17. A driving gear 19 and a driven gear 20 are rotatably installed on the inner wall of the material conveying groove 18. The driving gear 19 and the driven gear 20 are meshed and connected. Both the driving gear 19 and the driven gear 20 are in contact with the inner wall of the material conveying groove 18. The driving gear 19 drives the driven gear 20 to rotate at a high speed. During the rotation of the gears, the volume of the space on the side where the gears disengage gradually increases, forming a low-pressure area. The liquid cement grinding aid enters the material conveying groove 18 through the feed pipe 6 to fill the low-pressure area, completing the suction process. As the gears continue to rotate, the liquid cement grinding aid enters between the gears and the material conveying groove 18 and leaves through the discharge pipe 21. Moreover, the gears and the material conveying groove 18 divide the liquid cement grinding aid into multiple portions, thereby realizing the control of the amount of the liquid cement grinding aid entering the sleeve 1.
[0024] As Figure 5 shown in the figure, the discharging mechanism 8 includes a discharge pipe 21. The discharge pipe 21 is communicated with the sleeve 1. A fixing frame 22 is fixedly installed on the inner wall of the discharge pipe 21. A transmission shaft 23 is rotatably installed inside the fixing frame 22. Threaded blades 24 are fixedly installed on the outer surface of the transmission shaft 23. The threaded blades 24 are in contact with the inner wall of the discharge pipe 21. The transmission shaft 23 drives the threaded blades 24 to push the stirred material to leave the device through the discharge pipe 21.
[0025] As Figures 1-2 shown in the figure, two telescopic rods 25 are arranged on the upper surface of the corresponding main body 9 of the filter box 13. The two telescopic rods 25 are symmetrically distributed with respect to the filter cavity 10. When it is necessary to clean the solid cement grinding aid agglomerates in the filter box 13, the filter box 13 stays at the highest point of the cam 15, and the telescopic rods 25 fix the filter box 13 and make the filter box 13 leave the device.
[0026] As Figures 1-5 shown in the figure, a first motor 26 is arranged above the sleeve 1 corresponding to the rotating shaft 2. The rotating shaft 2 penetrates the sleeve 1 and is fixedly connected to the output end of the first motor 26. The first motor 26 serves as the power source of the rotating shaft 2.
[0027] As Figures 1-5 shown in the figure, a second motor 27 is arranged outside the main board 17 corresponding to the rotating rod 16. The rotating rod 16 penetrates the main board 17 and is fixedly connected to the output end of the second motor 27. The second motor 27 serves as the power source of the rotating rod 16.
[0028] Working principle: The solid cement grinding aid enters the filter box 13. The second motor 27 drives the cam 15 on the rotating rod 16 to rotate at a high speed, causing the powdered solid cement grinding aid in the filter box 13 to enter the sleeve 1 through the through groove 11. At the same time, the liquid cement grinding aid enters the feed pipe 6. The driving gear 19 drives the driven gear 20 to rotate at a high speed to control the speed and quantity of the liquid cement grinding aid entering the sleeve 1. Meanwhile, the rotating shaft 2 drives the stirring blades 3 to stir the materials, enabling the solid cement grinding aid and the liquid cement grinding aid to be fully mixed. The transmission shaft 23 drives the threaded blades 24 to push the stirred materials to leave the device through the discharge pipe 21.
[0029] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A cement grinding aid feeding system, comprising a sleeve, characterized in that: A rotating shaft is rotatably installed at the center of the top of the inner wall of the sleeve, and a plurality of stirring blades are fixedly installed on the outer surface of the rotating shaft, and the plurality of stirring blades are distributed circumferentially about the center line of the rotating shaft. A feed groove is opened at the top of the inner wall of the sleeve, and a filtering mechanism is fixedly installed on the inner wall of the feed groove, and a feed pipe is fixedly installed on the upper surface of the sleeve corresponding to the filtering mechanism, and the feed pipe is connected with the sleeve, and a gear pump is fixedly installed inside the feed pipe, and a discharging mechanism is fixedly installed on the bottom surface of the sleeve, and a support frame is fixedly installed on the bottom surface of the sleeve corresponding to the discharging mechanism.
2. A cement grinding aid feeding system according to claim 1, characterized in that: The filtering mechanism includes a main body, a filter cavity is provided inside the main body, a plurality of through grooves are provided on the bottom surface of the filter cavity, and the plurality of through grooves are evenly distributed about the bottom of the inner wall of the filter cavity, guide rails are fixedly installed on both sides of the inner wall of the filter cavity, a filter box is provided inside the filter cavity, sliders are fixedly installed on both sides of the filter box corresponding to the guide rails, the filter box is slidably connected to the guide rails through the sliders, a cam is provided between the bottom surface of the filter box and the bottom of the inner wall of the filter cavity, a rotating rod is rotatably installed on the inner wall of the filter cavity corresponding to the cam, and the rotating rod is fixedly connected to the cam.
3. A cement grinding aid feeding system according to claim 1, characterized in that: The gear pump comprises a main board, a feed trough is provided inside the main board, a driving gear and a driven gear are rotatably mounted on the inner wall of the feed trough, the driving gear and the driven gear are meshed and connected, and both the driving gear and the driven gear abut against the inner wall of the feed trough.
4. A cement grinding aid feeding system according to claim 1, characterized in that: The discharging mechanism includes a discharging pipe, which is connected to the sleeve. A fixing frame is fixedly installed on the inner wall of the discharging pipe. A transmission shaft is rotatably installed inside the fixing frame. A threaded blade is fixedly installed on the outer surface of the transmission shaft, and the threaded blade abuts against the inner wall of the discharging pipe.
5. A cement grinding aid feeding system according to claim 2, characterized in that: Two telescopic rods are arranged on the upper surface of the main body corresponding to the filter box, and the two telescopic rods are symmetrically distributed about the filter cavity.
6. A cement grinding aid feeding system according to claim 1, characterized in that: A first motor is disposed above the sleeve corresponding to the rotating shaft, and the rotating shaft passes through the sleeve and is fixedly connected to the output end of the first motor.
7. A cement grinding aid feeding system according to claim 2, characterized in that: A second motor is arranged outside the main board corresponding to the rotating rod, and the rotating rod penetrates the main board and is fixedly connected to the output end of the second motor.