Calcium carbonate pulverizer

Abstract

The utility model belongs to the technical field of calcium carbonate processing, and particularly relates to a calcium carbonate pulverizer which comprises a shell, a discharging pipe fixedly connected to the lower side of the shell, a feeding hopper fixedly connected to the upper side of the outer side of the shell, an upper grinding ring body fixed in the shell, and an upper grinding cavity formed in the upper grinding ring body. The upper end of the shell is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a grinding circular truncated cone located in the upper grinding cavity, a first grinding channel is formed between the side wall of the grinding circular truncated cone and the inner wall of the upper grinding cavity, and the size of the first grinding channel is gradually reduced from top to bottom; the outer side of the grinding circular truncated cone is fixedly connected with a spiral piece, the lower side of the upper grinding ring body is fixedly connected with a lower grinding ring body, and a lower grinding cavity is formed in the lower grinding ring body. According to the grinding device, slender calcium carbonate strips in calcium carbonate can be greatly reduced after grinding.

Description

Technical Field

[0001] The utility model belongs to the technical field of calcium carbonate processing, and particularly relates to a calcium carbonate crusher. Background Art

[0002] In modern industrial production, calcium carbonate, as an important inorganic chemical raw material, is widely used in many fields, including rubber, plastics, papermaking, and coatings. However, calcium carbonate that is not fully ground often contains lumpy calcium carbonate strips, which not only affects the quality of the calcium carbonate product but can also cause a series of problems during subsequent processing and use.

[0003] For example, a Chinese patent with authorization announcement number CN221360103U discloses a calcium carbonate processing pulverizer, which is equipped with a pulverizing mechanism to effectively improve the pulverizing effect when the pulverizer pulverizes calcium carbonate, thereby reducing the residual lumpy calcium carbonate in the powder and improving processing efficiency.

[0004] However, due to the shape limitations of the first rotating rod and the guide cover, the above-mentioned crusher can only apply horizontal shear force to the massive calcium carbonate when crushing the massive calcium carbonate, and grinds the massive calcium carbonate, resulting in the presence of vertically arranged slender calcium carbonate strips in the crushed calcium carbonate. Utility Model Content

[0005] The utility model aims to provide a calcium carbonate grinder which can greatly reduce the presence of elongated calcium carbonate strips in the calcium carbonate after grinding.

[0006] The technical solutions adopted by this utility model are as follows:

[0007] A calcium carbonate crusher comprises a shell, a feed pipe is fixedly connected to the lower side of the shell, a feed hopper is fixedly connected to the upper side of the outer side of the shell, an upper grinding ring body is fixedly fixed inside the shell, an upper grinding chamber is defined inside the upper grinding ring body, a drive motor is fixedly connected to the upper end of the shell, a grinding table located inside the upper grinding chamber is fixedly connected to the output end of the drive motor, a first grinding channel is formed between the side wall of the grinding table and the inner wall of the upper grinding chamber, the size of the first grinding channel gradually decreases from top to bottom, and a spiral sheet is fixedly connected to the outer side of the grinding table;

[0008] The lower side of the upper grinding ring body is fixedly connected to the lower grinding ring body, and a lower grinding cavity is opened inside the lower grinding ring body. The lower end of the grinding table is fixedly connected to a grinding column located inside the lower grinding cavity. The outer diameter of the grinding column is the same as the outer diameter of the lower end of the grinding table. A second grinding channel is formed between the outer wall of the grinding column and the inner wall of the outer shell. The lower end of the first grinding channel is connected to the upper end of the second grinding channel. The lower end of the grinding column is fixedly connected to a grinding circular plate located at the lower end of the lower grinding ring body. The outer diameter of the grinding circular plate is larger than the inner diameter of the lower grinding ring body. A third grinding channel connected to the lower end of the second grinding channel is formed between the lower side of the lower grinding ring body and the upper side of the grinding circular plate.

[0009] Furthermore, a cone is fixedly connected to the upper end of the grinding table, and the upper end of the cone is fixedly connected to the output end of the driving motor.

[0010] Furthermore, a material guide groove is provided on the lower side of the lower grinding ring body, and a material feed slot connected to the material guide groove is provided on the inner side wall of the lower grinding ring body.

[0011] Furthermore, a transmission hole is opened at the axis center of the lower end of the grinding table, and a transmission rod is fixedly connected to the axis center of the upper end of the grinding circular plate. The transmission rod is vertically slidably connected to the inside of the transmission hole, and an elastic frame is fixedly connected to the inside of the shell and at the lower end of the grinding circular plate.

[0012] Furthermore, the elastic frame includes a fixed frame fixedly connected to the lower end of the inner shell, and two support rods are vertically slidably connected to the fixed frame. The upper ends of the two support rods are fixedly connected to the top plate located at the lower end of the grinding circular plate, and the outer side of the support rod is sleeved with a return spring located between the top plate and the fixed frame.

[0013] Furthermore, the upper grinding chamber is a truncated cone-shaped cavity whose diameter gradually decreases from top to bottom, and the outer diameter of the cone gradually decreases from top to bottom.

[0014] The technical effects achieved by this utility model are:

[0015] The utility model provides a calcium carbonate crusher, which adds a lower grinding ring body, a grinding column and a grinding circular plate to the lower side of an upper grinding ring body and a grinding truncated table, and can perform secondary grinding and tertiary grinding on the calcium carbonate for slender calcium carbonate strips on the basis of primary grinding, and can greatly reduce the presence of slender calcium carbonate strips in the calcium carbonate after grinding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0018] Figure 3 It is a side view of the cutaway structure of the utility model;

[0019] Figure 4 This utility model Figure 3 Side view of the cutaway structure at A in the middle;

[0020] Figure 5 It is a structural schematic diagram of the lower grinding ring body of the utility model when it is inverted.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1. Outer shell; 2. Feeding tube; 3. Feed hopper; 4. Upper grinding ring; 5. Lower grinding ring; 6. Upper grinding chamber; 7. Lower grinding chamber; 8. Drive motor; 9. Cone; 10. Grinding table; 11. Spiral sheet; 12. Grinding column; 13. Grinding circular plate; 14. Guide trough; 15. Feeding slot; 16. Top plate; 17. Support rod; 18. Return spring; 19. Fixing frame; 20. Transmission hole; 21. Transmission rod. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0024] like Figure 1-5 As shown, a calcium carbonate crusher includes a shell 1, a feed pipe 2 is fixedly connected to the lower side of the shell 1, a feed hopper 3 is fixedly connected to the upper side of the outer side of the shell 1, an upper grinding ring body 4 is fixed inside the shell 1, an upper grinding chamber 6 is opened inside the upper grinding ring body 4, a drive motor 8 is fixedly connected to the upper end of the shell 1, and a grinding table 10 located inside the upper grinding chamber 6 is fixedly connected to the output end of the drive motor 8, and a first grinding channel is formed between the side wall of the grinding table 10 and the inner wall of the upper grinding chamber 6, and the size of the first grinding channel gradually decreases from top to bottom. A spiral sheet 11 is fixedly connected to the outer side of the grinding table 10;

[0025] At this time, calcium carbonate is added into the interior of the housing 1 through the feed hopper 3, so that the calcium carbonate falls into the interior of the first grinding channel, and then the drive motor 8 is started. After the drive motor 8 is started, it will drive the grinding table 10 and the spiral piece 11 to rotate. When the grinding table 10 rotates, the calcium carbonate is ground through the grinding table 10 and the side wall of the upper grinding chamber 6. At the same time, the calcium carbonate is pressed down by the spiral piece 11 until the ground and crushed calcium carbonate is discharged through the lower opening of the first grinding channel, thereby completing the preliminary grinding of the calcium carbonate;

[0026] like Figure 2-3 As shown, the upper grinding chamber 6 is a conical cavity with a diameter that gradually decreases from top to bottom, and the outer diameter of the cone 9 gradually decreases from top to bottom. At this time, by setting the shape of the upper grinding chamber 6 and the grinding cone 10, a first grinding channel with a size that gradually decreases from top to bottom can be formed relatively simply.

[0027] like Figure 1-3 As shown, the upper end of the grinding table 10 is fixedly connected to the cone 9, and the upper end of the cone 9 is fixedly connected to the output end of the drive motor 8. At this time, under the guidance of the inclined surface of the cone 9, the calcium carbonate falling on the upper side of the cone 9 will automatically slide into the interior of the first grinding channel, making feeding convenient.

[0028] like Figure 2-3 As shown, the lower side of the upper grinding ring body 4 is fixedly connected to the lower grinding ring body 5, and a lower grinding cavity 7 is opened inside the lower grinding ring body 5. The lower end of the grinding table 10 is fixedly connected to a grinding column 12 located inside the lower grinding cavity 7. The outer diameter of the grinding column 12 is the same as the outer diameter of the lower end of the grinding table 10. A second grinding channel is formed between the outer wall of the grinding column 12 and the inner wall of the shell 1. The lower end of the first grinding channel is connected to the upper end of the second grinding channel. The lower end of the grinding column 12 is fixedly connected to a grinding circular plate 13 located at the lower end of the lower grinding ring body 5. The outer diameter of the grinding circular plate 13 is larger than the inner diameter of the lower grinding ring body 5. A third grinding channel connected to the lower end of the second grinding channel is formed between the lower side of the lower grinding ring body 5 and the upper side of the grinding circular plate 13.

[0029] When the initially ground calcium carbonate falls into the second grinding channel through the first grinding channel, the calcium carbonate needs to pass through the bend between the first grinding channel and the second grinding channel. The elongated calcium carbonate strips contained in the initially ground calcium carbonate will be subjected to secondary grinding by the shear force generated at the bend, thereby reducing the elongated calcium carbonate strips.

[0030] When the secondary ground calcium carbonate falls into the third grinding channel through the second grinding channel, since the calcium carbonate needs to pass through the bend between the second grinding channel and the third grinding channel, the secondary ground calcium carbonate will contact the upper surface of the grinding circular plate 13 in a bottom-up order, so that the slender calcium carbonate strips in the calcium carbonate are gradually ground from bottom to top by the grinding circular plate 13, completing the third grinding of the calcium carbonate and further reducing the slender calcium carbonate strips.

[0031] like Figure 2-3 and Figure 5As shown, a material guide groove 14 is provided on the lower side of the lower grinding ring body 5, and a feeding groove opening 15 connected to the material guide groove 14 is provided on the inner side wall of the lower grinding ring body 5. After the calcium carbonate is ground three times, the rotating lower grinding ring body 5 will feed the calcium carbonate into the inside of the material guide groove 14 through the feeding groove opening 15, and push it through the side wall of the material guide groove 14 until the calcium carbonate moves to the outside of the grinding circular plate 13, so that the calcium carbonate powder can automatically fall under the action of gravity.

[0032] like Figure 2-3 As shown, a transmission hole 20 can be opened at the axis center of the lower end of the grinding table 10, and a transmission rod 21 can be fixedly connected to the axis center of the upper end of the grinding circular plate 13. The transmission rod 21 is vertically slidably connected to the inside of the transmission hole 20. An elastic frame can be fixedly connected to the inside of the shell 1 and at the lower end of the grinding circular plate 13. During the grinding process, an upward thrust is applied to the grinding circular plate 13 through the elastic frame, so that the calcium carbonate powder can be pressurized through the grinding circular plate 13 to improve the grinding effect.

[0033] like Figure 3-4 As shown, the elastic frame includes a fixing frame 19 fixedly connected to the lower end of the inner part of the shell 1, and two support rods 17 are vertically slidably connected to the fixing frame 19. The upper ends of the two support rods 17 are fixedly connected to the top plate 16 located at the lower end of the grinding circular plate 13, and the outer side of the support rod 17 is sleeved with a return spring 18 located between the top plate 16 and the fixing frame 19. At this time, the elastic force of the return spring 18 can apply an upward thrust to the grinding circular plate 13, and the stability of the top plate 16 can be improved through the support rod 17 and the fixing frame 19.

[0034] The working principle of this utility model is:

[0035] Calcium carbonate is added into the interior of the housing 1 through the feed hopper 3, so that the calcium carbonate falls into the interior of the first grinding channel. Then the drive motor 8 is started. After the drive motor 8 is started, it drives the grinding table 10 and the spiral blades 11 to rotate. When the grinding table 10 rotates, the calcium carbonate is ground through the grinding table 10 and the side wall of the upper grinding chamber 6. At the same time, the spiral blades 11 press down the calcium carbonate until the ground and crushed calcium carbonate is discharged through the lower opening of the first grinding channel, thus completing the preliminary grinding of the calcium carbonate;

[0036] When the initially ground calcium carbonate falls into the second grinding channel through the first grinding channel, the calcium carbonate needs to pass through the bend between the first grinding channel and the second grinding channel. The elongated calcium carbonate strips contained in the initially ground calcium carbonate will be subjected to secondary grinding by the shear force generated at the bend, thereby reducing the elongated calcium carbonate strips.

[0037] When the second-ground calcium carbonate falls into the third grinding channel through the second grinding channel, the calcium carbonate needs to pass through the bend between the second grinding channel and the third grinding channel. The second-ground calcium carbonate will contact the upper surface of the grinding circular plate 13 from bottom to top, so that the elongated calcium carbonate strips in the calcium carbonate are gradually ground from bottom to top by the grinding circular plate 13, completing the third grinding of the calcium carbonate and further reducing the elongated calcium carbonate strips.

[0038] In summary, this technical solution adds a lower grinding ring 5, a grinding column 12 and a grinding circular plate 13 to the lower side of the upper grinding ring 4 and the grinding table 10, so that calcium carbonate can be subjected to secondary and tertiary grinding for slender calcium carbonate strips on the basis of one grinding. After grinding, the presence of slender calcium carbonate strips in the calcium carbonate can be greatly reduced.

[0039] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A calcium carbonate crusher, characterized in that: The invention comprises a shell (1), wherein a feed pipe (2) is fixedly connected to the lower side of the shell (1), a feed hopper (3) is fixedly connected to the upper side of the outer side of the shell (1), an upper grinding ring (4) is fixedly provided inside the shell (1), an upper grinding chamber (6) is provided inside the upper grinding ring (4), a driving motor (8) is fixedly connected to the upper end of the shell (1), an output end of the driving motor (8) is fixedly connected to a grinding table (10) located inside the upper grinding chamber (6), and a first grinding channel is formed between the side wall of the grinding table (10) and the inner wall of the upper grinding chamber (6), wherein the size of the first grinding channel gradually decreases from top to bottom, and a spiral sheet (11) is fixedly provided on the outer side of the grinding table (10); The lower side of the upper grinding ring body (4) is fixedly connected to the lower grinding ring body (5), and a lower grinding cavity (7) is provided inside the lower grinding ring body (5). The lower end of the grinding table (10) is fixedly connected to a grinding column (12) located inside the lower grinding cavity (7), and the outer diameter of the grinding column (12) is the same as the outer diameter of the lower end of the grinding table (10). A second grinding channel is formed between the outer wall of the grinding column (12) and the inner wall of the shell (1). The lower end of the first grinding channel is connected to the upper end of the second grinding channel. The lower end of the grinding column (12) is fixedly connected to a grinding circular plate (13) located at the lower end of the lower grinding ring body (5), and the outer diameter of the grinding circular plate (13) is larger than the inner diameter of the lower grinding ring body (5). A third grinding channel connected to the lower end of the second grinding channel is formed between the lower side of the lower grinding ring body (5) and the upper side of the grinding circular plate (13).

2. A calcium carbonate crusher according to claim 1, characterized in that: The upper end of the grinding truncated table (10) is fixedly connected to a cone (9), and the upper end of the cone (9) is fixedly connected to the output end of the driving motor (8).

3. A calcium carbonate crusher according to claim 1, characterized in that: A material guide groove (14) is provided on the lower side of the lower grinding ring body (5), and a material feed slot (15) communicating with the material guide groove (14) is provided on the inner side wall of the lower grinding ring body (5).

4. A calcium carbonate crusher according to claim 1, characterized in that: A transmission hole (20) is provided at the axis center of the lower end of the grinding circular table (10), a transmission rod (21) is fixedly connected to the axis center of the upper end of the grinding circular plate (13), and the transmission rod (21) is vertically slidably connected to the inside of the transmission hole (20). An elastic frame is fixedly connected to the inside of the housing (1) and located at the lower end of the grinding circular plate (13).

5. A calcium carbonate crusher according to claim 4, characterized in that: The elastic frame includes a fixed frame (19) fixedly connected to the lower end of the inner portion of the housing (1), two support rods (17) are vertically slidably connected to the fixed frame (19), the upper ends of the two support rods (17) are fixedly connected to a top plate (16) located at the lower end of the grinding circular plate (13), and the outer sides of the support rods (17) are sleeved with a return spring (18) located between the top plate (16) and the fixed frame (19).

6. A calcium carbonate pulverizer according to claim 2, characterized in that: The upper grinding chamber (6) is a truncated cone-shaped cavity whose diameter gradually decreases from top to bottom, and the outer diameter of the cone (9) gradually decreases from top to bottom.

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