Calcium carbonate grinding device

Abstract

The utility model discloses a calcium carbonate grinding device which comprises a grinding box, the top of the grinding box is fixedly communicated with a feeding hopper, a first grinding mechanism is arranged in the grinding box, and a second grinding mechanism for conducting secondary grinding on calcium carbonate is arranged at the position, below the first grinding mechanism, of the grinding box. Through cooperation of the first grinding mechanism and the second grinding mechanism which are arranged up and down, a first motor in the first grinding mechanism can drive a conical grinding rod at the bottom of a rotating shaft to rotate, and through cooperation of the outer wall of the conical grinding rod and the inner wall of a conical grinding cylinder, calcium carbonate is primarily ground; calcium carbonate subjected to primary grinding falls into a grinding cavity in the surface of a mounting block in the second grinding mechanism, a second motor drives a grinding roller on the outer wall of a rotating rod to rotate, and the grinding roller is matched with the inner wall of the grinding cavity to conduct secondary grinding on the calcium carbonate, so that the purpose of conducting multi-stage grinding on the calcium carbonate in the grinding box is achieved, and the calcium carbonate is thoroughly ground; the preset-size powder is obtained.

Description

Technical Field

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

[0002] Calcium carbonate is an inorganic compound, commonly known as graystone, limestone, stone powder, etc. Calcium carbonate is alkaline, basically insoluble in water, and soluble in hydrochloric acid. It is one of the common substances on the earth and exists in rocks such as aragonite, calcite, chalk, limestone, marble, travertine, etc. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry. It needs to be ground during the processing of calcium carbonate.

[0003] Most of the existing calcium carbonate grinding devices can only grind calcium carbonate once, and the grinding is often incomplete. The ground powder is difficult to meet the requirements and the raw material needs to be ground again. Therefore, we need to propose a calcium carbonate grinding device. Utility Model Content

[0004] The utility model aims to provide a calcium carbonate grinding device, which realizes the purpose of multi-stage grinding of calcium carbonate in a grinding box by cooperating with a first grinding mechanism and a second grinding mechanism arranged up and down, so as to grind the calcium carbonate thoroughly to achieve a preset size of powder, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A calcium carbonate grinding device comprises a grinding box, the top of which is fixedly connected to a feed hopper, a first grinding mechanism is arranged inside the grinding box, and a second grinding mechanism for secondary grinding of calcium carbonate is arranged below the first grinding mechanism in the grinding box;

[0007] The second grinding mechanism comprises a mounting block, the mounting block is fixedly mounted on the inner walls of both sides of the grinding box, a grinding cavity is provided on the top of the mounting block, a rotating rod is rotatably mounted inside the grinding cavity, a grinding roller matching the grinding cavity is fixedly sleeved on the outer wall of the rotating rod, one end of the rotating rod passes through the mounting block and the grinding box and is fixedly connected to the second motor, and the other end of the rotating rod passes through the mounting block and the grinding box and is connected to the linkage mechanism;

[0008] A screening mechanism is arranged below the second grinding mechanism, a linkage mechanism connecting the second grinding mechanism and the screening mechanism is arranged on one side of the grinding box, a first discharge port is provided on one side of the grinding box located at the screening mechanism, and a second discharge port is provided below the side of the grinding box away from the first discharge port.

[0009] Preferably, the top of the grinding chamber is configured to be trumpet-shaped, and the bottom of the mounting block is provided with a feed trough communicating with the grinding chamber.

[0010] Preferably, the screening mechanism includes a mounting frame, which is obliquely installed inside the grinding box, a screening net is fixedly installed inside the mounting frame, four groups of springs are symmetrically fixedly installed on the bottom of the mounting frame, the bottoms of the four groups of springs are fixedly connected to support plates, and one side of the four groups of support plates is fixedly connected to the inner wall of the grinding box.

[0011] Preferably, the support plate is located inside the spring and a telescopic rod is fixedly installed thereon, the top of the telescopic rod is fixedly connected to the bottom of the installation frame, and the inclined lower end of the installation frame is located inside the first discharge port.

[0012] Preferably, the linkage mechanism includes a transmission shaft, which is rotatably mounted on the inner wall of the grinding box, one end of the transmission shaft passes through the grinding box and is fixedly sleeved with a first transmission wheel, the outer wall of the first transmission wheel is connected to the second transmission wheel through a toothed belt drive, the second transmission wheel is fixedly sleeved on the outer wall of one end of the rotating rod, and two groups of cams that are used in conjunction with the mounting frame are symmetrically fixedly sleeved on the outer wall of the transmission shaft.

[0013] Preferably, the first grinding mechanism includes a fixed frame, which is fixedly installed on the inner walls of both sides of the grinding box, a conical material guide shell is fixedly installed inside the fixed frame, the bottom of the conical material guide shell is connected to a conical grinding cylinder, a rotating shaft is rotatably installed on the inner top of the grinding box, the top of the rotating shaft passes through the grinding box and is fixedly connected to a first motor, and a conical grinding rod is fixedly connected to the bottom outer wall of the rotating shaft.

[0014] Preferably, the bottom of the conical grinding rod is located inside the conical grinding cylinder, and the outer wall of the conical grinding rod is matched with the inner wall of the conical grinding cylinder.

[0015] Preferably, the inner bottom of the grinding box is inclined, the second discharge port is located at the inclined lower end of the inner bottom of the grinding box, and the grinding box is fixedly provided with discharge racks on the outer sides of the first discharge port and the second discharge port.

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

[0017] 1. The utility model cooperates with the first grinding mechanism and the second grinding mechanism arranged up and down, and the first motor in the first grinding mechanism drives the conical grinding rod at the bottom of the rotating shaft to rotate, and the outer wall of the conical grinding rod cooperates with the inner wall of the conical grinding cylinder to grind the calcium carbonate for the first time, and the calcium carbonate after the first grinding falls into the grinding cavity on the surface of the mounting block in the second grinding mechanism, and the second motor drives the grinding roller on the outer wall of the rotating rod to rotate, and the grinding roller cooperates with the inner wall of the grinding cavity to grind the calcium carbonate for the second time, so as to achieve the purpose of multi-stage grinding of the calcium carbonate in the grinding box, so that the calcium carbonate is ground thoroughly to reach the preset size powder;

[0018] 2. Through the setting of the screening mechanism and the linkage mechanism, the second transmission wheel sleeved on the outer wall of the end of the rotating rod can cooperate with the first transmission wheel through the toothed belt, driving the transmission shaft and the two groups of cams sleeved on the outer wall to rotate. The two groups of cams are continuously rotated to drive the installation frame and the internal screening net to slide up and down in the grinding box. The spring is deformed, so that the screening net installed in the installation frame screens the calcium carbonate powder after the secondary grinding, so that the calcium carbonate powder that meets the grinding standards falls to the bottom of the grinding box and is discharged through the second discharge port, and the powder that does not meet the grinding standards slides to the first discharge port for discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first grinding mechanism of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the linkage mechanism, the screening mechanism and the second grinding mechanism of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the exploded second grinding mechanism of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the utility model in a front view;

[0024] Figure 6 It is a schematic structural diagram of the utility model from the side.

[0025] In the figure: 1. grinding box; 2. feed hopper; 4. first grinding mechanism; 41. fixed frame; 42. conical guide shell; 43. conical grinding cylinder; 44. rotating shaft; 45. first motor; 46. conical grinding rod; 5. second grinding mechanism; 51. mounting block; 52. grinding chamber; 53. rotating rod; 54. grinding roller; 55. second motor; 56. discharge chute; 6. screening mechanism; 61. mounting frame; 62. screening net; 63. spring; 64. support plate; 65. telescopic rod; 7. linkage mechanism; 71. transmission shaft; 72. first transmission wheel; 73. second transmission wheel; 74. cam; 8. first discharge port; 9. second discharge port; 10. discharge rack. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-6 , the utility model provides a technical solution:

[0028] A calcium carbonate grinding device comprises a grinding box 1, the top of the grinding box 1 is fixedly connected to a feed hopper 2, a first grinding mechanism 4 is arranged inside the grinding box 1, and a second grinding mechanism 5 for secondary grinding of calcium carbonate is arranged below the first grinding mechanism 4 in the grinding box 1;

[0029] The second grinding mechanism 5 includes a mounting block 51, which is fixedly mounted on the inner walls of both sides of the grinding box 1. A grinding chamber 52 is provided on the top of the mounting block 51. A rotating rod 53 is rotatably mounted inside the grinding chamber 52. A grinding roller 54 matching the grinding chamber 52 is fixedly sleeved on the outer wall of the rotating rod 53. One end of the rotating rod 53 passes through the mounting block 51 and the grinding box 1 and is fixedly connected to a second motor 55. The other end of the rotating rod 53 passes through the mounting block 51 and the grinding box 1 and is connected to the linkage mechanism 7.

[0030] A screening mechanism 6 is arranged below the second grinding mechanism 5, a linkage mechanism 7 connecting the second grinding mechanism 5 and the screening mechanism 6 is arranged on one side of the grinding box 1, a first discharge port 8 is opened on the side of the grinding box 1 located at the screening mechanism 6, and a second discharge port 9 is opened below the side of the grinding box 1 away from the first discharge port 8.

[0031] The top of the grinding chamber 52 is configured to be trumpet-shaped, so that the calcium carbonate powder after the initial grinding can fall into the grinding chamber 52 . The bottom of the mounting block 51 is provided with a feed chute 56 connected to the grinding chamber 52 , so that the calcium carbonate powder after the secondary grinding can fall onto the screening mechanism 6 through the feed chute 56 .

[0032] The screening mechanism 6 includes a mounting frame 61, which is obliquely mounted inside the grinding box 1. A screening net 62 is fixedly mounted inside the mounting frame 61. Four groups of springs 63 are symmetrically fixedly mounted on the bottom of the mounting frame 61. The bottoms of the four groups of springs 63 are all fixedly connected to support plates 64. One side of the four groups of support plates 64 is fixedly connected to the inner wall of the grinding box 1, so that the calcium carbonate powder after secondary grinding can be screened through the screening net 62.

[0033] The support plate 64 is located inside the spring 63 and is fixedly installed with a telescopic rod 65. The top of the telescopic rod 65 is fixedly connected to the bottom of the installation frame 61. The inclined lower end of the installation frame 61 is located inside the first discharge port 8, so that the telescopic rod 65 cooperates with the spring 63 to buffer and limit the installation frame 61, so that the installation frame 61 can only slide up and down.

[0034] The linkage mechanism 7 includes a transmission shaft 71, which is rotatably mounted on the inner wall of the grinding box 1. One end of the transmission shaft 71 passes through the grinding box 1 and is fixedly sleeved with a first transmission wheel 72. The outer wall of the first transmission wheel 72 is connected to the second transmission wheel 73 through a toothed belt transmission. The second transmission wheel 73 is fixedly sleeved on the outer wall of one end of the rotating rod 53. Two groups of cams 74 used in conjunction with the mounting frame 61 are symmetrically fixedly sleeved on the outer wall of the transmission shaft 71, so that the second transmission wheel 73 sleeved on the outer wall of the end of the rotating rod 53 cooperates with the first transmission wheel 72 through a toothed belt, thereby driving the transmission shaft 71 and the two groups of cams 74 sleeved on the outer wall thereof to rotate, and the mounting frame 61 and the internal screening net 62 thereof are driven to slide up and down in the grinding box 1 through the continuous rotation of the two groups of cams 74.

[0035] The first grinding mechanism 4 includes a fixed frame 41, which is fixedly installed on the inner walls of both sides of the grinding box 1. A conical material guide shell 42 is fixedly installed inside the fixed frame 41, and the bottom of the conical material guide shell 42 is connected to a conical grinding cylinder 43. A rotating shaft 44 is rotatably installed on the inner top of the grinding box 1. The top of the rotating shaft 44 passes through the grinding box 1 and is fixedly connected to a first motor 45. A conical grinding rod 46 is fixedly connected to the outer wall of the bottom of the rotating shaft 44, so that the conical grinding rod 46 at the bottom of the rotating shaft 44 can be driven to rotate by the first motor 45. The outer wall of the conical grinding rod 46 cooperates with the inner wall of the conical grinding cylinder 43 to grind the calcium carbonate that slides through the conical material guide shell 42 and enters the conical grinding cylinder 43.

[0036] The bottom of the conical grinding rod 46 is located inside the conical grinding cylinder 43, and the outer wall of the conical grinding rod 46 is adapted to the inner wall of the conical grinding cylinder 43, so as to grind the calcium carbonate that slides into the conical grinding cylinder 43 through the conical material guide shell 42, so that the calcium carbonate is ground multiple times while sliding in the conical grinding cylinder 43. The distance between the conical grinding rod 46 and the conical grinding cylinder 43 is larger at the top and smaller at the bottom. The closer to the bottom of the conical grinding cylinder 43, the smaller the distance between the outer wall of the conical grinding rod 46 and the conical grinding cylinder 43.

[0037] The inner bottom of the grinding box 1 is inclined, and the second discharge port 9 is located at the inclined lower end of the inner bottom of the grinding box 1. The grinding box 1 is fixedly installed with a discharge rack 10 on the outside of the first discharge port 8 and the second discharge port 9, so that the first discharge port 8 and the second discharge port 9 can be assisted by the discharge rack 10 to discharge the calcium carbonate powder.

[0038] Working principle: When the utility model is used, the first grinding mechanism 4 and the second grinding mechanism 5 arranged up and down cooperate with each other, and the first motor 45 in the first grinding mechanism 4 can drive the conical grinding rod 46 at the bottom of the rotating shaft 44 to rotate, and the outer wall of the conical grinding rod 46 cooperates with the inner wall of the conical grinding cylinder 43 to grind the calcium carbonate that slides through the conical guide shell 42 and enters the conical grinding cylinder 43, and the calcium carbonate is initially ground. The calcium carbonate after the initial grinding falls into the grinding cavity 52 on the surface of the mounting block 51 in the second grinding mechanism 5, and the grinding roller 54 on the outer wall of the rotating rod 53 is driven to rotate by the second motor 55. The grinding roller 54 cooperates with the inner wall of the grinding cavity 52 to grind the calcium carbonate for the second time, so as to achieve the purpose of multi-stage grinding of the calcium carbonate in the grinding box 1, so that the calcium carbonate is ground thoroughly to reach a preset size of powder;

[0039] The calcium carbonate powder after secondary grinding falls onto the screening mechanism 6 through the discharge trough 56 at the bottom of the mounting block 51. Through the arrangement of the screening mechanism 6 and the linkage mechanism 7, the second transmission wheel 73 sleeved on the outer wall of the end of the rotating rod 53 can cooperate with the first transmission wheel 72 through a toothed belt, driving the transmission shaft 71 and the two groups of cams 74 sleeved on the outer wall to rotate. The two groups of cams 74 continuously rotate to drive the mounting frame 61 and the internal screening net 62 to slide up and down in the grinding box 1. The spring 63 is deformed, so that the screening net 62 installed in the mounting frame 61 screens the calcium carbonate powder after secondary grinding, so that the calcium carbonate powder that meets the grinding standards falls into the bottom of the grinding box 1 and is discharged through the second discharge port 9, and the powder that does not meet the grinding standards slides to the first discharge port 8 for discharge.

[0040] Although the 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 calcium carbonate grinding device, comprising a grinding box (1), characterized in that: The top of the grinding box (1) is fixedly connected to a feed hopper (2), a first grinding mechanism (4) is arranged inside the grinding box (1), and a second grinding mechanism (5) for secondary grinding of calcium carbonate is arranged below the first grinding mechanism (4) in the grinding box (1); The second grinding mechanism (5) comprises a mounting block (51), the mounting block (51) being fixedly mounted on the inner walls of both sides of the grinding box (1), a grinding chamber (52) being provided on the top of the mounting block (51), a rotating rod (53) being rotatably mounted inside the grinding chamber (52), a grinding roller (54) matching the grinding chamber (52) being fixedly sleeved on the outer wall of the rotating rod (53), one end of the rotating rod (53) passing through the mounting block (51) and the grinding box (1) and being fixedly connected to a second motor (55), and the other end of the rotating rod (53) passing through the mounting block (51) and the grinding box (1) and being connected to a linkage mechanism (7); A screening mechanism (6) is arranged below the second grinding mechanism (5), a linkage mechanism (7) connecting the second grinding mechanism (5) and the screening mechanism (6) is arranged on one side of the grinding box (1), a first discharge port (8) is provided on the grinding box (1) on one side of the screening mechanism (6), and a second discharge port (9) is provided below the side of the grinding box (1) away from the first discharge port (8).

2. A calcium carbonate grinding device according to claim 1, characterized in that: The top of the grinding chamber (52) is arranged in a trumpet shape, and the bottom of the mounting block (51) is provided with a material discharge trough (56) which is in communication with the grinding chamber (52).

3. A calcium carbonate grinding device according to claim 1, characterized in that: The screening mechanism (6) comprises a mounting frame (61), the mounting frame (61) being mounted obliquely inside the grinding box (1), a screening net (62) being fixedly mounted inside the mounting frame (61), four groups of springs (63) being symmetrically fixedly mounted on the bottom of the mounting frame (61), the bottoms of the four groups of springs (63) being fixedly connected to support plates (64), and one side of the four groups of support plates (64) being fixedly connected to the inner wall of the grinding box (1).

4. A calcium carbonate grinding device according to claim 3, characterized in that: The support plate (64) is located inside the spring (63) and is fixedly installed with a telescopic rod (65). The top of the telescopic rod (65) is fixedly connected to the bottom of the installation frame (61). The inclined lower end of the installation frame (61) is located inside the first discharge port (8).

5. A calcium carbonate grinding device according to claim 4, characterized in that: The linkage mechanism (7) comprises a transmission shaft (71), the transmission shaft (71) being rotatably mounted on the inner wall of the grinding box (1), one end of the transmission shaft (71) passing through the grinding box (1) and being fixedly sleeved with a first transmission wheel (72), the outer wall of the first transmission wheel (72) being connected to a second transmission wheel (73) via a toothed belt drive, the second transmission wheel (73) being fixedly sleeved on the outer wall of one end of the rotating rod (53), and two groups of cams (74) for use with the mounting frame (61) being symmetrically fixedly sleeved on the outer wall of the transmission shaft (71).

6. A calcium carbonate grinding device according to claim 1, characterized in that: The first grinding mechanism (4) comprises a fixed frame (41), the fixed frame (41) is fixedly mounted on the inner walls of both sides of the grinding box (1), a conical material guide shell (42) is fixedly mounted inside the fixed frame (41), the bottom of the conical material guide shell (42) is connected to a conical grinding cylinder (43), a rotating shaft (44) is rotatably mounted on the inner top of the grinding box (1), the top of the rotating shaft (44) passes through the grinding box (1) and is fixedly connected to a first motor (45), and a conical grinding rod (46) is fixedly connected to the outer wall of the bottom of the rotating shaft (44).

7. A calcium carbonate grinding device according to claim 6, characterized in that: The bottom of the conical grinding rod (46) is located inside the conical grinding cylinder (43), and the outer wall of the conical grinding rod (46) is adapted to the inner wall of the conical grinding cylinder (43).

8. A calcium carbonate grinding device according to claim 1, characterized in that: The inner bottom of the grinding box (1) is arranged to be inclined, the second discharge port (9) is located at the inclined lower end of the inner bottom of the grinding box (1), and the grinding box (1) is fixedly provided with a discharge rack (10) on the outer sides of the first discharge port (8) and the second discharge port (9).

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