Cement raw material grinding device

Abstract

The utility model discloses a cement raw material grinding device and relates to the technical field of cement grinding. Comprising a tank body, a first filter screen plate is fixedly installed at the position, close to the upper side, of the inner wall of the tank body, a first grinding mechanism is installed in the middle of the upper surface of the first filter screen plate through a first transmission mechanism, and a motor is installed on the inner wall of the upper side of the tank body corresponding to the first grinding mechanism; an output shaft of the motor is in transmission connection with the first grinding mechanism through a second transmission mechanism, a feeding hopper is installed on the right side of the upper surface of the tank, a second filter screen plate is installed on the inner wall of the tank close to the middle, and a second grinding mechanism is installed on the upper surface of the second filter screen plate through a third transmission mechanism. According to the cement raw material grinding device, a three-stage grinding function is adopted, cement raw materials can be crushed step by step, the cement raw material grinding efficiency is higher, the cement raw material grinding quality is better, the effect of screening the ground raw materials is improved, unqualified raw materials can flow back to be reprocessed, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement grinding, in particular to a cement raw material grinding device. Background Art

[0002] Cement raw meal is a mixture of calcareous raw materials, clay raw materials and a small amount of corrective raw materials in proportion. Sometimes mineralizers, crystal seeds, etc. are also added. Coal is also added during vertical kiln production. The material ground to a certain fineness is called cement raw meal.

[0003] In the prior art, conventional cement raw meal grinding devices are mostly equipped with only one grinding roller. A large amount of raw meal is piled up, and it takes a lot of time to grind the raw meal from coarse to fine, resulting in low grinding efficiency. At the same time, after the grinding is completed, it is impossible to screen, resulting in the quality of the ground raw meal not meeting the standards. It also needs to be screened through a screening mechanism, and the unqualified raw meal needs to be collected and re-ground, which is inconvenient to use. Utility Model Content

[0004] The utility model provides a cement raw material grinding device to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cement raw material grinding device, comprising a tank body, a first filter screen plate is fixedly installed on the inner wall of the tank body near the upper side, a first grinding mechanism is installed on the middle part of the upper surface of the first filter screen plate through a first transmission mechanism, a motor is installed on the upper inner wall of the tank body corresponding to the first grinding mechanism, and the output shaft of the motor is transmission-connected to the first grinding mechanism through a second transmission mechanism, a feeding hopper is installed on the right side of the upper surface of the tank body, a second filter screen plate is installed on the inner wall of the tank body near the middle, a second grinding mechanism is installed on the upper surface of the second filter screen plate through a third transmission mechanism, and the second grinding mechanism is transmission-connected to the first transmission mechanism, a third filter screen plate is fixedly installed on the inner wall of the tank body near the lower side, a third grinding mechanism is installed on the upper surface of the third filter screen plate through a fourth transmission mechanism, and the third grinding mechanism is transmission-connected to the third transmission mechanism, a screening mechanism is fixedly installed on the inner wall of the tank body near the lower side, a reflux mechanism is provided on the left side of the tank body corresponding to the screening mechanism, and a discharge pipe is installed on the lower surface of the tank body.

[0006] Furthermore, the first transmission mechanism includes a transmission rod, a bearing and a rectangular groove, the transmission rod is installed on the first filter screen plate through the bearing, the upper surface of the second grinding mechanism corresponding to the transmission rod is provided with a rectangular groove, and the transmission rod is inserted into the rectangular groove.

[0007] Furthermore, the second transmission mechanism, the third transmission mechanism and the fourth transmission mechanism all have the same structure as the first transmission mechanism.

[0008] Furthermore, the first grinding mechanism includes a grinding roller and a grinding sleeve, the grinding roller is fixedly installed on the upper surface of the transmission rod, the grinding sleeve is fixedly installed on the inner wall of the tank body corresponding to the outer surface of the grinding roller, the lower surface of the grinding sleeve is fixedly connected to the first filter plate, and the upper surface of the grinding sleeve is a trumpet-shaped structure.

[0009] Furthermore, the second grinding mechanism and the third grinding mechanism have the same structure as the first grinding mechanism.

[0010] Furthermore, the mesh diameters of the first filter screen plate, the second filter screen plate and the third filter screen plate are gradually reduced.

[0011] Furthermore, the screening mechanism includes a conical filter screen plate and a scraper, the conical filter screen plate is fixedly installed on the lower side of the inner wall of the tank body, the scraper is fixedly installed on the fourth transmission mechanism, and the lower surface of the scraper is movably fitted with the upper surface of the conical filter screen plate.

[0012] Furthermore, the reflux mechanism includes a collecting hopper, a fan and a reflux pipe. The collecting hopper is installed on the left side wall of the tank body corresponding to the conical filter screen plate. The fan is installed on the upper surface of the tank body, and the fan inlet and outlet are respectively connected to the collecting hopper and the lower side of the upper side wall of the tank body through the reflux pipe.

[0013] Compared with the prior art, the utility model provides a cement raw material grinding device, which has the following beneficial effects:

[0014] 1. The cement raw material grinding device achieves a three-level grinding function by arranging a first grinding mechanism, a second grinding mechanism and a third grinding mechanism, and can gradually crush the cement raw material, so that the cement raw material grinding efficiency is higher and the quality is better.

[0015] 2. The cement raw material grinding device increases the effect of screening the raw materials after grinding by setting a screening mechanism, and then enables unqualified raw materials to be returned for reprocessing through a reflux mechanism, thereby greatly improving production efficiency and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the first transmission mechanism of the utility model.

[0019] In the figure: 1. tank body; 2. first filter screen plate; 3. first transmission mechanism; 301. transmission rod; 302. bearing; 303. rectangular groove; 4. first grinding mechanism; 401. grinding roller; 402. grinding sleeve; 5. motor; 6. second transmission mechanism; 7. feeding hopper; 8. second filter screen plate; 9. third transmission mechanism; 10. second grinding mechanism; 11. third filter screen plate; 12. fourth transmission mechanism; 13. third grinding mechanism; 14. screening mechanism; 141. conical filter screen plate; 142. scraper; 15. reflux mechanism; 151. collecting hopper; 152. fan; 153. reflux pipe; 16. discharge pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3 The utility model discloses a cement raw material grinding device, comprising a tank body 1, a first filter screen plate 2 is fixedly installed on the inner wall of the tank body 1 near the upper side, a first grinding mechanism 4 is installed on the middle of the upper surface of the first filter screen plate 2 through a first transmission mechanism 3, a motor 5 is installed on the upper inner wall of the tank body 1 corresponding to the first grinding mechanism 4, and the output shaft of the motor 5 is connected to the first grinding mechanism 4 through a second transmission mechanism 6, a feeding hopper 7 is installed on the right side of the upper surface of the tank body 1, a second filter screen plate 8 is installed near the middle of the inner wall of the tank body 1, and the upper surface of the second filter screen plate 8 is connected to the first grinding mechanism 4 through a second transmission mechanism 6. A second grinding mechanism 10 is installed on the surface through a third transmission mechanism 9, and the second grinding mechanism 10 is transmission connected to the first transmission mechanism 3. A third filter screen plate 11 is fixedly installed on the inner wall of the tank body 1 near the lower side, and a third grinding mechanism 13 is installed on the upper surface of the third filter screen plate 11 through a fourth transmission mechanism 12. The third grinding mechanism 13 is transmission connected to the third transmission mechanism 9. A screening mechanism 14 is fixedly installed on the inner wall of the tank body 1 near the lower side, and a reflux mechanism 15 is provided on the left side of the tank body 1 corresponding to the screening mechanism 14, and a discharge pipe 16 is installed on the lower surface of the tank body 1.

[0022] Specifically, the first transmission mechanism 3 includes a transmission rod 301, a bearing 302 and a rectangular groove 303. The transmission rod 301 is installed on the first filter plate 2 through the bearing 302. The upper surface of the second grinding mechanism 10 corresponding to the transmission rod 301 is provided with a rectangular groove 303, and the transmission rod 301 is inserted into the rectangular groove 303.

[0023] In this embodiment, the bearing 302 installs the transmission rod 301, and the transmission rod 301 installs the first grinding mechanism 4. The transmission rod 301 is inserted into the lower second grinding mechanism 10 through the rectangular groove 303, so that the transmission rod 301 can drive the lower second grinding mechanism 10 to rotate.

[0024] Specifically, the second transmission mechanism 6 , the third transmission mechanism 9 and the fourth transmission mechanism 12 are all of the same structure as the first transmission mechanism 3 .

[0025] In this embodiment, the second transmission mechanism 6 enables the motor 5 to drive the first grinding mechanism 4 to rotate, the third transmission mechanism 9 enables the second grinding mechanism 10 to drive the third grinding mechanism 13 to rotate, and the fourth transmission mechanism 12 enables the third grinding mechanism 13 to drive the screening mechanism 14 to perform screening.

[0026] Specifically, the first grinding mechanism 4 includes a grinding roller 401 and a grinding sleeve 402. The grinding roller 401 is fixedly installed on the upper surface of the transmission rod 301. The grinding sleeve 402 is fixedly installed on the inner wall of the tank body 1 corresponding to the outer surface of the grinding roller 401. The lower surface of the grinding sleeve 402 is fixedly connected to the first filter plate 2, and the upper surface of the grinding sleeve 402 is a trumpet-shaped structure.

[0027] In this embodiment, the grinding roller 401 is rotated by the transmission rod 301, and the motor 5 drives the grinding roller 401 to rotate in the grinding sleeve 402 through the second transmission mechanism 6, so as to achieve the effect of grinding the cement raw material.

[0028] Specifically, the second grinding mechanism 10 and the third grinding mechanism 13 have the same structure as the first grinding mechanism 4 .

[0029] In this embodiment, the second grinding mechanism 10 and the third grinding mechanism 13 can both grind cement raw materials. The distance between the outer surface of the grinding roller 401 and the inner wall of the grinding sleeve 402 in the first grinding mechanism 4, the second grinding mechanism 10 and the third grinding mechanism 13 is gradually reduced, so that the cement raw materials are gradually ground into finer particles.

[0030] Specifically, the mesh diameters of the first filter screen plate 2, the second filter screen plate 8 and the third filter screen plate 11 are gradually reduced.

[0031] In this embodiment, the first filter screen plate 2, the second filter screen plate 8 and the third filter screen plate 11 enable the cement raw material to be ground better.

[0032] Specifically, the screening mechanism 14 includes a conical filter screen plate 141 and a scraper 142. The conical filter screen plate 141 is fixedly installed on the lower side of the inner wall of the tank body 1, and the scraper 142 is fixedly installed on the fourth transmission mechanism 12, and the lower surface of the scraper 142 is movably fitted with the upper surface of the conical filter screen plate 141.

[0033] In this embodiment, the conical filter plate 141 filters the ground cement raw meal, and the scraper 142 drives the raw meal on the conical filter plate 141 to rotate, so that the cement raw meal that meets the production quality is discharged downward through the discharge pipe 16, and larger particles are filtered out. At the same time, the scraper 142 pushes the unqualified cement raw meal to move to the collecting hopper 151.

[0034] Specifically, the reflux mechanism 15 includes a collecting hopper 151, a fan 152 and a reflux pipe 153. The collecting hopper 151 is installed on the left side wall of the tank body 1 corresponding to the conical filter screen plate 141, and the fan 152 is installed on the upper surface of the tank body 1, and the air inlet and outlet of the fan 152 are respectively connected to the collecting hopper 151 and the lower side of the upper side wall of the tank body 1 through the reflux pipe 153.

[0035] In this embodiment, the fan 152 exhausts air to the collecting hopper 151 through the return pipe 153, so that the unqualified cement raw material powder filtered out is sucked into the uppermost side of the tank body 1 for re-grinding.

[0036] When in use, the raw cement is poured into the tank body 1 through the feeding hopper 7, and the raw cement falls into the grinding roller 401 and the grinding sleeve 402 in the first grinding mechanism 4, so that the motor 5 drives the grinding roller 401 to rotate in the grinding sleeve 402 through the second transmission mechanism 6, so as to achieve the effect of grinding the raw cement. The crushed raw cement continues to fall downward through the first filter screen 2, and unqualified raw cement continues to be ground. The grinding roller 401 rotates through the transmission rod 301 in the first transmission mechanism 3, so that the transmission rod 301 drives the second grinding mechanism 10 to grind the raw cement again on the second filter screen 8, and the second grinding mechanism 10 drives the third grinding mechanism 13 through the third transmission mechanism 9 to grind the raw cement again on the third filter screen 11, so as to achieve the three-stage grinding effect. The raw cement meal can be gradually crushed to make the grinding efficiency of the raw cement meal higher and the quality better. The ground raw cement meal powder falls into the screening mechanism 14. The conical filter screen 141 in the screening mechanism 14 filters the ground raw cement meal. The scraper 142 drives the raw cement meal on the conical filter screen 141 to rotate, so that the raw cement meal powder that meets the production quality is discharged downward through the discharge pipe 16, and the larger particles are filtered out. At the same time, the scraper 142 pushes the unqualified raw cement meal powder to move to the collecting hopper 151, and the fan 152 in the reflux mechanism 15 exhausts the collecting hopper 151 through the reflux pipe 153, so that the filtered unqualified raw cement meal powder is sucked into the uppermost side of the tank body 1 for re-grinding processing, which greatly improves the production efficiency and the convenience of use.

[0037] In summary, the cement raw meal grinding device adopts a three-stage grinding function, which can gradually crush the cement raw meal, making the cement raw meal grinding efficiency higher and the quality better, and increasing the effect of screening the raw meal after grinding. Unqualified raw meal can be returned for reprocessing, thereby improving the convenience of use.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cement raw material grinding device, comprising a tank body (1), characterized in that: A first filter screen plate (2) is fixedly mounted on the inner wall of the tank body (1) near the upper side, a first grinding mechanism (4) is mounted on the middle of the upper surface of the first filter screen plate (2) via a first transmission mechanism (3), a motor (5) is mounted on the upper inner wall of the tank body (1) corresponding to the first grinding mechanism (4), and the output shaft of the motor (5) is transmission-connected to the first grinding mechanism (4) via a second transmission mechanism (6), a feeding hopper (7) is mounted on the right side of the upper surface of the tank body (1), a second filter screen plate (8) is mounted on the inner wall of the tank body (1) near the middle, and a second filter screen plate (8) is mounted on the upper surface of the second filter screen plate (8) via a third transmission mechanism (9). A second grinding mechanism (10) is provided, and the second grinding mechanism (10) is in transmission connection with the first transmission mechanism (3); a third filter screen plate (11) is fixedly mounted on the inner wall of the tank body (1) near the lower side; a third grinding mechanism (13) is mounted on the upper surface of the third filter screen plate (11) via a fourth transmission mechanism (12); the third grinding mechanism (13) is in transmission connection with the third transmission mechanism (9); a screening mechanism (14) is fixedly mounted on the inner wall of the tank body (1) near the lower side; a reflux mechanism (15) is provided on the left side of the tank body (1) corresponding to the screening mechanism (14); and a discharge pipe (16) is installed on the lower surface of the tank body (1).

2. A cement raw material grinding device according to claim 1, characterized in that: The first transmission mechanism (3) comprises a transmission rod (301), a bearing (302) and a rectangular groove (303); the transmission rod (301) is mounted on the first filter screen plate (2) via the bearing (302); a rectangular groove (303) is provided on the upper surface of the second grinding mechanism (10) corresponding to the transmission rod (301); and the transmission rod (301) is inserted into the rectangular groove (303).

3. A cement raw material grinding device according to claim 1, characterized in that: The second transmission mechanism (6), the third transmission mechanism (9) and the fourth transmission mechanism (12) all have the same structure as the first transmission mechanism (3).

4. A cement raw material grinding device according to claim 1, characterized in that: The first grinding mechanism (4) comprises a grinding roller (401) and a grinding sleeve (402); the grinding roller (401) is fixedly mounted on the upper surface of the transmission rod (301); the grinding sleeve (402) is fixedly mounted on the inner wall of the tank body (1) corresponding to the outer surface of the grinding roller (401); the lower surface of the grinding sleeve (402) is fixedly connected to the first filter screen plate (2); and the upper surface of the grinding sleeve (402) is a trumpet-shaped structure.

5. The cement raw material grinding device according to claim 1, characterized in that: The second grinding mechanism (10) and the third grinding mechanism (13) both have the same structure as the first grinding mechanism (4).

6. A cement raw material grinding device according to claim 1, characterized in that: The mesh diameters of the first filter screen plate (2), the second filter screen plate (8) and the third filter screen plate (11) gradually decrease.

7. A cement raw material grinding device according to claim 1, characterized in that: The screening mechanism (14) comprises a conical filter screen plate (141) and a scraper (142); the conical filter screen plate (141) is fixedly mounted on the lower side of the inner wall of the tank body (1); the scraper (142) is fixedly mounted on the fourth transmission mechanism (12); and the lower surface of the scraper (142) is movably fitted to the upper surface of the conical filter screen plate (141).

8. A cement raw material grinding device according to claim 1, characterized in that: The reflux mechanism (15) comprises a collecting hopper (151), a fan (152) and a reflux pipe (153); the collecting hopper (151) is mounted on the left side wall of the tank body (1) corresponding to the conical filter screen plate (141); the fan (152) is mounted on the upper surface of the tank body (1); and the air inlet and outlet of the fan (152) are respectively connected to the collecting hopper (151) and the lower side of the upper side wall of the tank body (1) through the reflux pipe (153).

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