Ultrafine ground calcium carbonate preparation device

Abstract

The utility model discloses a superfine ground calcium carbonate preparation device which comprises a crushing cylinder, a supporting frame is fixedly installed on the outer surface of the crushing cylinder, a crushing and grinding mechanism is rotatably installed in the crushing cylinder, the crushing end of the crushing and grinding mechanism rotates in the crushing cylinder, and the grinding end of the crushing and grinding mechanism rotates in a surrounding cylinder and is flush with a first grinding disc. The surrounding cylinder is fixedly installed on the lower surface of the smashing cylinder, and the first grinding disc is fixedly installed on the lower surface of the smashing cylinder and surrounded by the surrounding cylinder. According to the multi-stage crushing device, heavy calcium carbonate is crushed into small blocks, the small blocks of calcium carbonate are crushed into small particles again to be ground into powder, large calcium carbonate raw materials can be gradually refined in a multi-stage crushing mode, and compared with single-time crushing, multi-stage crushing can more effectively treat heavy calcium carbonate with large hardness; the calcium carbonate can be fully crushed, and the crushing thoroughness is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrafine heavy calcium carbonate production equipment, specifically an ultrafine heavy calcium carbonate preparation device. Background Technology

[0002] Ultrafine heavy calcium carbonate is an important industrial raw material, widely used in industries such as plastics, rubber, coatings, and papermaking.

[0003] Patent CN115501944B discloses a particle processing device for ultrafine heavy calcium carbonate. This device completes the coarse and fine grinding of ultrafine heavy calcium carbonate particles in one operation. It includes a housing, a support frame, a fan, and connecting pipes. The support frame is connected to the housing, and the fan is installed at the bottom of the housing. A connecting pipe connects the fan to the lower right side of the support frame. The device also includes a crushing mechanism and a refining mechanism. The upper part of the housing has a crushing mechanism for fixing and crushing the heavy calcium carbonate, and the upper part of the housing also has a refining mechanism for crushing and refining the crushed heavy calcium carbonate. The refining mechanism is located below the crushing mechanism. A rotating disc initially crushes the heavy calcium carbonate, and the grinding wheel crushes and refines the crushed heavy calcium carbonate, thus enabling the coarse and fine grinding of heavy calcium carbonate to be completed in one operation.

[0004] The aforementioned particle processing device only crushes heavy calcium carbonate by grinding wheels, and cannot grind it into powder during the crushing process. Furthermore, crushing by grinding alone will result in uneven particle size of the product. When grinding crushes particles by applying pressure, large particles cannot be refined, thus limiting the application range of the product. Utility Model Content

[0005] The purpose of this invention is to provide an ultrafine heavy calcium carbonate preparation device to solve the technical problem mentioned in the background art that heavy calcium carbonate cannot be ground into powder during the crushing process by a grinding wheel, and that larger particles cannot be refined.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An apparatus for preparing ultrafine heavy calcium carbonate includes a crushing cylinder, a support frame fixedly installed on the outer surface of the crushing cylinder, a crushing and grinding mechanism rotatably installed inside the crushing cylinder, the crushing end of the crushing and grinding mechanism rotating inside the crushing cylinder, the grinding end of the crushing and grinding mechanism rotating inside a surrounding cylinder and flush with a first grinding disc, the surrounding cylinder being fixedly installed on the lower surface of the crushing cylinder, and the first grinding disc being fixedly installed on the lower surface of the crushing cylinder and enclosed within the surrounding cylinder.

[0008] As a further embodiment of this utility model, a feed inlet is installed inside and outside the crushing cylinder.

[0009] As a further embodiment of this utility model, the crushing and grinding mechanism includes a geared motor, which is fixedly installed on the upper surface of the crushing cylinder. The output shaft of the geared motor passes through the crushing cylinder and has a threaded column fixedly installed at its end.

[0010] As a further embodiment of this utility model, the threaded column is thinner to coarser from top to bottom, and the thread spacing on the outer surface of the threaded column is also gradually decreasing from top to bottom, so that it can crush large pieces of heavy calcium carbonate into small pieces during the process of pushing them.

[0011] As a further embodiment of this utility model, a crushing column is fixedly installed on the lower surface of the threaded column, a first convex tooth is fixedly installed on the outer surface of the crushing column, and a second convex tooth is also fixedly installed on the inner wall of the crushing cylinder at the same level as the crushing column. The first convex tooth and the second convex tooth are arranged in an alternating manner, so that the heavy calcium carbonate that has been broken into small pieces can be crushed into small particles.

[0012] As a further embodiment of this utility model, the lower end of the second protruding tooth is provided with a constricted oblique sliding annular surface and is connected to the annular opening, which is opened on the first grinding disc.

[0013] As a further preferred embodiment of this utility model, a connecting column is fixedly installed on the lower surface of the crushing column. The connecting column extends through the annular opening and is located inside the surrounding cylinder. A second grinding disc is fixedly installed on the lower surface of the connecting column. The second grinding disc is located below the first grinding disc and is flush with the first grinding disc, so that it can grind small granular heavy calcium carbonate into powder.

[0014] Compared with the prior art, the beneficial effects of this utility model's ultrafine heavy calcium carbonate preparation device are as follows:

[0015] In the preparation of ultrafine heavy calcium carbonate, heavy calcium carbonate can be poured into the crushing cylinder through the feed inlet. The heavy calcium carbonate in the crushing cylinder will be crushed into small pieces by the crushing end of the crushing and grinding mechanism. The small pieces of heavy calcium carbonate will fall into the range of the second convex tooth of the crushing cylinder, so that the crushing end of the crushing and grinding mechanism can crush the small pieces of heavy calcium carbonate into small particles. The small particles of heavy calcium carbonate can then slide into the grinding end of the crushing and grinding mechanism and the first grinding disc through the inclined sliding ring surface at the lower end of the crushing cylinder. In this way, the small particles of heavy calcium carbonate can be ground into powder and fall into the receiving container placed at the lower end of the cylinder.

[0016] By first crushing heavy calcium carbonate into small pieces, and then further crushing these small pieces into small particles and grinding them into powder, the multi-stage pulverization process can gradually refine larger calcium carbonate raw materials. Compared to single-stage pulverization, multi-stage pulverization can more effectively process heavy calcium carbonate with greater hardness, ensuring that the calcium carbonate can be fully pulverized, improving the thoroughness of pulverization. Moreover, the pulverized calcium carbonate has a smaller particle size and a larger specific surface area, which can better meet the needs of industries such as high-end coatings and fine chemicals that have high requirements for the fineness of calcium carbonate powder. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the first and second grinding discs in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first and second protruding teeth in the embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the threaded column in an embodiment of the present invention.

[0022] Reference numerals: 1. Crushing cylinder; 101. Ring inlet; 102. Feed inlet; 103. Surrounding cylinder; 104. Support frame; 105. Second convex tooth; 106. First grinding disc; 107. Inclined sliding ring surface; 2. Crushing and grinding mechanism; 201. Gear motor; 202. Threaded column; 203. Crushing column; 204. Second grinding disc; 205. Connecting column; 206. First convex tooth. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0026] See Figures 1-2 As shown in the figure, an embodiment of the present invention provides an ultrafine heavy calcium carbonate preparation device, including a crushing cylinder 1, a support frame 104 fixedly installed on the outer surface of the crushing cylinder 1, a crushing and grinding mechanism 2 rotatably installed inside the crushing cylinder 1, the crushing end of the crushing and grinding mechanism 2 rotatably inside the crushing cylinder 1, and the grinding end of the crushing and grinding mechanism 2 rotatably inside the surrounding cylinder 103 and is flush with the first grinding disc 106. The surrounding cylinder 103 is fixedly installed on the lower surface of the crushing cylinder 1, and the first grinding disc 106 is fixedly installed on the lower surface of the crushing cylinder 1 and is surrounded by the surrounding cylinder 103.

[0027] The crushing cylinder 1 has a feed inlet 102 connected to its outer and inner surfaces.

[0028] In the preparation of ultrafine heavy calcium carbonate, heavy calcium carbonate is poured into the crushing cylinder 1 through the feed port 102. The heavy calcium carbonate in the crushing cylinder 1 is crushed into small pieces by the crushing end of the crushing and grinding mechanism 2. The small pieces of heavy calcium carbonate fall into the range of the second convex tooth 105 of the crushing cylinder 1, so that the crushing end of the crushing and grinding mechanism 2 crushes the small pieces of heavy calcium carbonate into small particles. The small particles of heavy calcium carbonate can slide into the grinding end of the crushing and grinding mechanism 2 and the first grinding disc 106 through the inclined sliding ring surface 107 at the lower end of the crushing cylinder 1. In this way, the small particles of heavy calcium carbonate can be ground into powder and fall into the receiving container placed at the lower end of the surrounding cylinder 103.

[0029] Heavy calcium carbonate is crushed into small pieces, which are then further crushed into small particles and ground into powder. This multi-stage grinding process gradually refines larger calcium carbonate raw materials. Compared to single-stage grinding, multi-stage grinding can more effectively process heavy calcium carbonate with higher hardness, ensuring that the calcium carbonate is fully ground and improving the thoroughness of grinding. Moreover, the ground calcium carbonate has a smaller particle size and a larger specific surface area, which can better meet the needs of industries such as high-end coatings and fine chemicals that have high requirements for the fineness of calcium carbonate powder.

[0030] See Figures 3-4 As shown, the crushing and grinding mechanism 2 includes a reduction motor 201, which is fixedly installed on the upper surface of the crushing cylinder 1. The output shaft of the reduction motor 201 passes through the crushing cylinder 1 and a threaded column 202 is fixedly installed at its end.

[0031] The threaded column 202 is thinner and thicker from top to bottom, and the thread spacing on the outer surface of the threaded column 202 also gradually decreases from top to bottom, so that it can crush large pieces of heavy calcium carbonate into small pieces during the process of pushing them.

[0032] A crushing column 203 is fixedly installed on the lower surface of the threaded column 202. A first protruding tooth 206 is fixedly installed on the outer surface of the crushing column 203, and a second protruding tooth 105 is also fixedly installed on the inner wall of the crushing cylinder 1 at the same level as the crushing column 203. The first protruding tooth 206 and the second protruding tooth 105 are arranged in an alternating manner, so that the heavy calcium carbonate that is broken into small pieces can be crushed into small particles.

[0033] The lower end of the second protruding tooth 105 is provided with a constricted oblique sliding ring surface 107 and is connected to the ring opening 101, which is opened on the first grinding disc 106.

[0034] A connecting column 205 is fixedly installed on the lower surface of the crushing column 203. The connecting column 205 extends through the annular opening 101 and is located inside the surrounding cylinder 103. A second grinding disc 204 is fixedly installed on the lower surface of the connecting column 205. The second grinding disc 204 is located at the lower end of the first grinding disc 106 and is flush with the first grinding disc 106, so that it can grind small particles of heavy calcium carbonate into powder.

[0035] In the preparation of ultrafine heavy calcium carbonate, heavy calcium carbonate is poured into the crushing cylinder 1 through the feed inlet 102 and rests against the outer surface of the threaded column 202. The threaded column 202 is driven to rotate by the reduction motor 201, which pushes the heavy calcium carbonate towards the lower end of the crushing cylinder 1. The thread spacing on the outer surface of the threaded column 202 gradually decreases from top to bottom, which allows it to crush large pieces of heavy calcium carbonate into smaller pieces during the pushing process. The smaller pieces of heavy calcium carbonate fall between the second convex tooth 105 of the crushing cylinder 1 and the first convex tooth 206 on the outer surface of the crushing column 203. The first convex tooth 206 can then rotate to push the smaller pieces of heavy calcium carbonate between the second convex tooth 105 of the crushing cylinder 1 and the first convex tooth 206 on the outer surface of the crushing column 203. The heavy calcium carbonate is broken into small particles between 05 and 05. The crushed heavy calcium carbonate particles will slide through the gap between the first protrusion 206 and the second protrusion 105 and slide through the inclined sliding annular surface 107 and fall onto the surface of the second grinding disc 204. As the second grinding disc 204 rotates, it can throw the small particles of heavy calcium carbonate into the first grinding disc 106. Then, the second grinding disc 204 and the first grinding disc 106 can grind the small particles of heavy calcium carbonate into powder and flow out from between the second grinding disc 204 and the first grinding disc 106 and fall into the receiving container placed at the lower end of the surrounding cylinder 103. After multi-stage crushing and grinding, the final calcium carbonate powder has a better particle size uniformity. In the process described above, uneven particles are further refined at each crushing and grinding stage, thereby improving product quality. At the same time, the orderly crushing and grinding process helps to separate impurities from calcium carbonate, improving product purity. Moreover, the entire preparation process is a continuous operation, from the feeding of calcium carbonate to the final collection of powder, with each link closely connected. The continuous operation mode reduces interruptions and waiting time in the production process, which is conducive to improving production efficiency and is suitable for large-scale industrial production.

[0036] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for preparing ultrafine heavy calcium carbonate, characterized in that: The device includes a crushing cylinder (1), a support frame (104) fixedly installed on the outer surface of the crushing cylinder (1), a crushing and grinding mechanism (2) rotatably installed inside the crushing cylinder (1), the crushing end of the crushing and grinding mechanism (2) rotatably inside the crushing cylinder (1), the grinding end of the crushing and grinding mechanism (2) rotatably inside the surrounding cylinder (103) and is flush with the first grinding disc (106), the surrounding cylinder (103) is fixedly installed on the lower surface of the crushing cylinder (1), and the first grinding disc (106) is fixedly installed on the lower surface of the crushing cylinder (1) and is surrounded by the surrounding cylinder (103).

2. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 1, characterized in that: The crushing cylinder (1) has a feed inlet (102) connected to its outer and inner surfaces.

3. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 1, characterized in that: The crushing and grinding mechanism (2) includes a reduction motor (201), which is fixedly installed on the upper surface of the crushing cylinder (1). The output shaft of the reduction motor (201) passes through the crushing cylinder (1) and a threaded column (202) is fixedly installed at its end.

4. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 3, characterized in that: The threaded column (202) is thinner to coarser from top to bottom, and the thread spacing on the outer surface of the threaded column (202) is also gradually decreasing from top to bottom, so that it can crush large pieces of heavy calcium carbonate into small pieces during the process of pushing them.

5. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 4, characterized in that: A crushing column (203) is fixedly installed on the lower surface of the threaded column (202). A first protruding tooth (206) is fixedly installed on the outer surface of the crushing column (203), and a second protruding tooth (105) is also fixedly installed on the inner wall of the crushing cylinder (1) at the same level as the crushing column (203). The first protruding tooth (206) and the second protruding tooth (105) are arranged in an alternating manner so that they can crush the heavy calcium carbonate that has been broken into small pieces into small particles.

6. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 5, characterized in that: The lower end of the second protruding tooth (105) is provided with a constricted oblique sliding ring surface (107) and is connected to the ring opening (101), which is opened on the first grinding disc (106).

7. The apparatus for preparing ultrafine heavy calcium carbonate according to claim 5, characterized in that: A connecting column (205) is fixedly installed on the lower surface of the crushing column (203). The connecting column (205) extends through the annular opening (101) and is located inside the surrounding cylinder (103). A second grinding disc (204) is fixedly installed on the lower surface of the connecting column (205). The second grinding disc (204) is located at the lower end of the first grinding disc (106) and is flush with the first grinding disc (106), which can grind small granular heavy calcium carbonate into powder.

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